1 // SPDX-License-Identifier: GPL-2.0-or-later 1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* SCTP kernel implementation 2 /* SCTP kernel implementation
3 * (C) Copyright IBM Corp. 2001, 2004 3 * (C) Copyright IBM Corp. 2001, 2004
4 * Copyright (c) 1999-2000 Cisco, Inc. 4 * Copyright (c) 1999-2000 Cisco, Inc.
5 * Copyright (c) 1999-2001 Motorola, Inc. 5 * Copyright (c) 1999-2001 Motorola, Inc.
6 * Copyright (c) 2001-2003 Intel Corp. 6 * Copyright (c) 2001-2003 Intel Corp.
7 * Copyright (c) 2001-2002 Nokia, Inc. 7 * Copyright (c) 2001-2002 Nokia, Inc.
8 * Copyright (c) 2001 La Monte H.P. Yarroll 8 * Copyright (c) 2001 La Monte H.P. Yarroll
9 * 9 *
10 * This file is part of the SCTP kernel implem 10 * This file is part of the SCTP kernel implementation
11 * 11 *
12 * These functions interface with the sockets 12 * These functions interface with the sockets layer to implement the
13 * SCTP Extensions for the Sockets API. 13 * SCTP Extensions for the Sockets API.
14 * 14 *
15 * Note that the descriptions from the specifi 15 * Note that the descriptions from the specification are USER level
16 * functions--this file is the functions which 16 * functions--this file is the functions which populate the struct proto
17 * for SCTP which is the BOTTOM of the sockets 17 * for SCTP which is the BOTTOM of the sockets interface.
18 * 18 *
19 * Please send any bug reports or fixes you ma 19 * Please send any bug reports or fixes you make to the
20 * email address(es): 20 * email address(es):
21 * lksctp developers <linux-sctp@vger.kerne 21 * lksctp developers <linux-sctp@vger.kernel.org>
22 * 22 *
23 * Written or modified by: 23 * Written or modified by:
24 * La Monte H.P. Yarroll <piggy@acm.org> 24 * La Monte H.P. Yarroll <piggy@acm.org>
25 * Narasimha Budihal <narsi@refcode.org 25 * Narasimha Budihal <narsi@refcode.org>
26 * Karl Knutson <karl@athena.chica 26 * Karl Knutson <karl@athena.chicago.il.us>
27 * Jon Grimm <jgrimm@us.ibm.com 27 * Jon Grimm <jgrimm@us.ibm.com>
28 * Xingang Guo <xingang.guo@intel 28 * Xingang Guo <xingang.guo@intel.com>
29 * Daisy Chang <daisyc@us.ibm.com 29 * Daisy Chang <daisyc@us.ibm.com>
30 * Sridhar Samudrala <samudrala@us.ibm. 30 * Sridhar Samudrala <samudrala@us.ibm.com>
31 * Inaky Perez-Gonzalez <inaky.gonzalez@in 31 * Inaky Perez-Gonzalez <inaky.gonzalez@intel.com>
32 * Ardelle Fan <ardelle.fan@intel 32 * Ardelle Fan <ardelle.fan@intel.com>
33 * Ryan Layer <rmlayer@us.ibm.co 33 * Ryan Layer <rmlayer@us.ibm.com>
34 * Anup Pemmaiah <pemmaiah@cc.usu.e 34 * Anup Pemmaiah <pemmaiah@cc.usu.edu>
35 * Kevin Gao <kevin.gao@intel.c 35 * Kevin Gao <kevin.gao@intel.com>
36 */ 36 */
37 37
38 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 38 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
39 39
40 #include <crypto/hash.h> 40 #include <crypto/hash.h>
41 #include <linux/types.h> 41 #include <linux/types.h>
42 #include <linux/kernel.h> 42 #include <linux/kernel.h>
43 #include <linux/wait.h> 43 #include <linux/wait.h>
44 #include <linux/time.h> 44 #include <linux/time.h>
45 #include <linux/sched/signal.h> 45 #include <linux/sched/signal.h>
46 #include <linux/ip.h> 46 #include <linux/ip.h>
47 #include <linux/capability.h> 47 #include <linux/capability.h>
48 #include <linux/fcntl.h> 48 #include <linux/fcntl.h>
49 #include <linux/poll.h> 49 #include <linux/poll.h>
50 #include <linux/init.h> 50 #include <linux/init.h>
51 #include <linux/slab.h> 51 #include <linux/slab.h>
52 #include <linux/file.h> 52 #include <linux/file.h>
53 #include <linux/compat.h> 53 #include <linux/compat.h>
54 #include <linux/rhashtable.h> 54 #include <linux/rhashtable.h>
55 55
56 #include <net/ip.h> 56 #include <net/ip.h>
57 #include <net/icmp.h> 57 #include <net/icmp.h>
58 #include <net/route.h> 58 #include <net/route.h>
59 #include <net/ipv6.h> 59 #include <net/ipv6.h>
60 #include <net/inet_common.h> 60 #include <net/inet_common.h>
61 #include <net/busy_poll.h> 61 #include <net/busy_poll.h>
62 #include <trace/events/sock.h> 62 #include <trace/events/sock.h>
63 63
64 #include <linux/socket.h> /* for sa_family_t * 64 #include <linux/socket.h> /* for sa_family_t */
65 #include <linux/export.h> 65 #include <linux/export.h>
66 #include <net/sock.h> 66 #include <net/sock.h>
67 #include <net/sctp/sctp.h> 67 #include <net/sctp/sctp.h>
68 #include <net/sctp/sm.h> 68 #include <net/sctp/sm.h>
69 #include <net/sctp/stream_sched.h> 69 #include <net/sctp/stream_sched.h>
70 #include <net/rps.h> <<
71 70
72 /* Forward declarations for internal helper fu 71 /* Forward declarations for internal helper functions. */
73 static bool sctp_writeable(const struct sock * 72 static bool sctp_writeable(const struct sock *sk);
74 static void sctp_wfree(struct sk_buff *skb); 73 static void sctp_wfree(struct sk_buff *skb);
75 static int sctp_wait_for_sndbuf(struct sctp_as 74 static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
76 size_t msg_len 75 size_t msg_len);
77 static int sctp_wait_for_packet(struct sock *s 76 static int sctp_wait_for_packet(struct sock *sk, int *err, long *timeo_p);
78 static int sctp_wait_for_connect(struct sctp_a 77 static int sctp_wait_for_connect(struct sctp_association *, long *timeo_p);
79 static int sctp_wait_for_accept(struct sock *s 78 static int sctp_wait_for_accept(struct sock *sk, long timeo);
80 static void sctp_wait_for_close(struct sock *s 79 static void sctp_wait_for_close(struct sock *sk, long timeo);
81 static void sctp_destruct_sock(struct sock *sk 80 static void sctp_destruct_sock(struct sock *sk);
82 static struct sctp_af *sctp_sockaddr_af(struct 81 static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
83 union 82 union sctp_addr *addr, int len);
84 static int sctp_bindx_add(struct sock *, struc 83 static int sctp_bindx_add(struct sock *, struct sockaddr *, int);
85 static int sctp_bindx_rem(struct sock *, struc 84 static int sctp_bindx_rem(struct sock *, struct sockaddr *, int);
86 static int sctp_send_asconf_add_ip(struct sock 85 static int sctp_send_asconf_add_ip(struct sock *, struct sockaddr *, int);
87 static int sctp_send_asconf_del_ip(struct sock 86 static int sctp_send_asconf_del_ip(struct sock *, struct sockaddr *, int);
88 static int sctp_send_asconf(struct sctp_associ 87 static int sctp_send_asconf(struct sctp_association *asoc,
89 struct sctp_chunk 88 struct sctp_chunk *chunk);
90 static int sctp_do_bind(struct sock *, union s 89 static int sctp_do_bind(struct sock *, union sctp_addr *, int);
91 static int sctp_autobind(struct sock *sk); 90 static int sctp_autobind(struct sock *sk);
92 static int sctp_sock_migrate(struct sock *olds 91 static int sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
93 struct sctp_assoc 92 struct sctp_association *assoc,
94 enum sctp_socket_ 93 enum sctp_socket_type type);
95 94
96 static unsigned long sctp_memory_pressure; 95 static unsigned long sctp_memory_pressure;
97 static atomic_long_t sctp_memory_allocated; 96 static atomic_long_t sctp_memory_allocated;
98 static DEFINE_PER_CPU(int, sctp_memory_per_cpu 97 static DEFINE_PER_CPU(int, sctp_memory_per_cpu_fw_alloc);
99 struct percpu_counter sctp_sockets_allocated; 98 struct percpu_counter sctp_sockets_allocated;
100 99
101 static void sctp_enter_memory_pressure(struct 100 static void sctp_enter_memory_pressure(struct sock *sk)
102 { 101 {
103 WRITE_ONCE(sctp_memory_pressure, 1); 102 WRITE_ONCE(sctp_memory_pressure, 1);
104 } 103 }
105 104
106 105
107 /* Get the sndbuf space available at the time 106 /* Get the sndbuf space available at the time on the association. */
108 static inline int sctp_wspace(struct sctp_asso 107 static inline int sctp_wspace(struct sctp_association *asoc)
109 { 108 {
110 struct sock *sk = asoc->base.sk; 109 struct sock *sk = asoc->base.sk;
111 110
112 return asoc->ep->sndbuf_policy ? sk->s 111 return asoc->ep->sndbuf_policy ? sk->sk_sndbuf - asoc->sndbuf_used
113 : sk_st 112 : sk_stream_wspace(sk);
114 } 113 }
115 114
116 /* Increment the used sndbuf space count of th 115 /* Increment the used sndbuf space count of the corresponding association by
117 * the size of the outgoing data chunk. 116 * the size of the outgoing data chunk.
118 * Also, set the skb destructor for sndbuf acc 117 * Also, set the skb destructor for sndbuf accounting later.
119 * 118 *
120 * Since it is always 1-1 between chunk and sk 119 * Since it is always 1-1 between chunk and skb, and also a new skb is always
121 * allocated for chunk bundling in sctp_packet 120 * allocated for chunk bundling in sctp_packet_transmit(), we can use the
122 * destructor in the data chunk skb for the pu 121 * destructor in the data chunk skb for the purpose of the sndbuf space
123 * tracking. 122 * tracking.
124 */ 123 */
125 static inline void sctp_set_owner_w(struct sct 124 static inline void sctp_set_owner_w(struct sctp_chunk *chunk)
126 { 125 {
127 struct sctp_association *asoc = chunk- 126 struct sctp_association *asoc = chunk->asoc;
128 struct sock *sk = asoc->base.sk; 127 struct sock *sk = asoc->base.sk;
129 128
130 /* The sndbuf space is tracked per ass 129 /* The sndbuf space is tracked per association. */
131 sctp_association_hold(asoc); 130 sctp_association_hold(asoc);
132 131
133 if (chunk->shkey) 132 if (chunk->shkey)
134 sctp_auth_shkey_hold(chunk->sh 133 sctp_auth_shkey_hold(chunk->shkey);
135 134
136 skb_set_owner_w(chunk->skb, sk); 135 skb_set_owner_w(chunk->skb, sk);
137 136
138 chunk->skb->destructor = sctp_wfree; 137 chunk->skb->destructor = sctp_wfree;
139 /* Save the chunk pointer in skb for s 138 /* Save the chunk pointer in skb for sctp_wfree to use later. */
140 skb_shinfo(chunk->skb)->destructor_arg 139 skb_shinfo(chunk->skb)->destructor_arg = chunk;
141 140
142 refcount_add(sizeof(struct sctp_chunk) 141 refcount_add(sizeof(struct sctp_chunk), &sk->sk_wmem_alloc);
143 asoc->sndbuf_used += chunk->skb->trues 142 asoc->sndbuf_used += chunk->skb->truesize + sizeof(struct sctp_chunk);
144 sk_wmem_queued_add(sk, chunk->skb->tru 143 sk_wmem_queued_add(sk, chunk->skb->truesize + sizeof(struct sctp_chunk));
145 sk_mem_charge(sk, chunk->skb->truesize 144 sk_mem_charge(sk, chunk->skb->truesize);
146 } 145 }
147 146
148 static void sctp_clear_owner_w(struct sctp_chu 147 static void sctp_clear_owner_w(struct sctp_chunk *chunk)
149 { 148 {
150 skb_orphan(chunk->skb); 149 skb_orphan(chunk->skb);
151 } 150 }
152 151
153 #define traverse_and_process() \ 152 #define traverse_and_process() \
154 do { \ 153 do { \
155 msg = chunk->msg; \ 154 msg = chunk->msg; \
156 if (msg == prev_msg) \ 155 if (msg == prev_msg) \
157 continue; \ 156 continue; \
158 list_for_each_entry(c, &msg->chunks, f 157 list_for_each_entry(c, &msg->chunks, frag_list) { \
159 if ((clear && asoc->base.sk == 158 if ((clear && asoc->base.sk == c->skb->sk) || \
160 (!clear && asoc->base.sk ! 159 (!clear && asoc->base.sk != c->skb->sk)) \
161 cb(c); \ 160 cb(c); \
162 } \ 161 } \
163 prev_msg = msg; \ 162 prev_msg = msg; \
164 } while (0) 163 } while (0)
165 164
166 static void sctp_for_each_tx_datachunk(struct 165 static void sctp_for_each_tx_datachunk(struct sctp_association *asoc,
167 bool cl 166 bool clear,
168 void (* 167 void (*cb)(struct sctp_chunk *))
169 168
170 { 169 {
171 struct sctp_datamsg *msg, *prev_msg = 170 struct sctp_datamsg *msg, *prev_msg = NULL;
172 struct sctp_outq *q = &asoc->outqueue; 171 struct sctp_outq *q = &asoc->outqueue;
173 struct sctp_chunk *chunk, *c; 172 struct sctp_chunk *chunk, *c;
174 struct sctp_transport *t; 173 struct sctp_transport *t;
175 174
176 list_for_each_entry(t, &asoc->peer.tra 175 list_for_each_entry(t, &asoc->peer.transport_addr_list, transports)
177 list_for_each_entry(chunk, &t- 176 list_for_each_entry(chunk, &t->transmitted, transmitted_list)
178 traverse_and_process() 177 traverse_and_process();
179 178
180 list_for_each_entry(chunk, &q->retrans 179 list_for_each_entry(chunk, &q->retransmit, transmitted_list)
181 traverse_and_process(); 180 traverse_and_process();
182 181
183 list_for_each_entry(chunk, &q->sacked, 182 list_for_each_entry(chunk, &q->sacked, transmitted_list)
184 traverse_and_process(); 183 traverse_and_process();
185 184
186 list_for_each_entry(chunk, &q->abandon 185 list_for_each_entry(chunk, &q->abandoned, transmitted_list)
187 traverse_and_process(); 186 traverse_and_process();
188 187
189 list_for_each_entry(chunk, &q->out_chu 188 list_for_each_entry(chunk, &q->out_chunk_list, list)
190 traverse_and_process(); 189 traverse_and_process();
191 } 190 }
192 191
193 static void sctp_for_each_rx_skb(struct sctp_a 192 static void sctp_for_each_rx_skb(struct sctp_association *asoc, struct sock *sk,
194 void (*cb)(st 193 void (*cb)(struct sk_buff *, struct sock *))
195 194
196 { 195 {
197 struct sk_buff *skb, *tmp; 196 struct sk_buff *skb, *tmp;
198 197
199 sctp_skb_for_each(skb, &asoc->ulpq.lob 198 sctp_skb_for_each(skb, &asoc->ulpq.lobby, tmp)
200 cb(skb, sk); 199 cb(skb, sk);
201 200
202 sctp_skb_for_each(skb, &asoc->ulpq.rea 201 sctp_skb_for_each(skb, &asoc->ulpq.reasm, tmp)
203 cb(skb, sk); 202 cb(skb, sk);
204 203
205 sctp_skb_for_each(skb, &asoc->ulpq.rea 204 sctp_skb_for_each(skb, &asoc->ulpq.reasm_uo, tmp)
206 cb(skb, sk); 205 cb(skb, sk);
207 } 206 }
208 207
209 /* Verify that this is a valid address. */ 208 /* Verify that this is a valid address. */
210 static inline int sctp_verify_addr(struct sock 209 static inline int sctp_verify_addr(struct sock *sk, union sctp_addr *addr,
211 int len) 210 int len)
212 { 211 {
213 struct sctp_af *af; 212 struct sctp_af *af;
214 213
215 /* Verify basic sockaddr. */ 214 /* Verify basic sockaddr. */
216 af = sctp_sockaddr_af(sctp_sk(sk), add 215 af = sctp_sockaddr_af(sctp_sk(sk), addr, len);
217 if (!af) 216 if (!af)
218 return -EINVAL; 217 return -EINVAL;
219 218
220 /* Is this a valid SCTP address? */ 219 /* Is this a valid SCTP address? */
221 if (!af->addr_valid(addr, sctp_sk(sk), 220 if (!af->addr_valid(addr, sctp_sk(sk), NULL))
222 return -EINVAL; 221 return -EINVAL;
223 222
224 if (!sctp_sk(sk)->pf->send_verify(sctp 223 if (!sctp_sk(sk)->pf->send_verify(sctp_sk(sk), (addr)))
225 return -EINVAL; 224 return -EINVAL;
226 225
227 return 0; 226 return 0;
228 } 227 }
229 228
230 /* Look up the association by its id. If this 229 /* Look up the association by its id. If this is not a UDP-style
231 * socket, the ID field is always ignored. 230 * socket, the ID field is always ignored.
232 */ 231 */
233 struct sctp_association *sctp_id2assoc(struct 232 struct sctp_association *sctp_id2assoc(struct sock *sk, sctp_assoc_t id)
234 { 233 {
235 struct sctp_association *asoc = NULL; 234 struct sctp_association *asoc = NULL;
236 235
237 /* If this is not a UDP-style socket, 236 /* If this is not a UDP-style socket, assoc id should be ignored. */
238 if (!sctp_style(sk, UDP)) { 237 if (!sctp_style(sk, UDP)) {
239 /* Return NULL if the socket s 238 /* Return NULL if the socket state is not ESTABLISHED. It
240 * could be a TCP-style listen 239 * could be a TCP-style listening socket or a socket which
241 * hasn't yet called connect() 240 * hasn't yet called connect() to establish an association.
242 */ 241 */
243 if (!sctp_sstate(sk, ESTABLISH 242 if (!sctp_sstate(sk, ESTABLISHED) && !sctp_sstate(sk, CLOSING))
244 return NULL; 243 return NULL;
245 244
246 /* Get the first and the only 245 /* Get the first and the only association from the list. */
247 if (!list_empty(&sctp_sk(sk)-> 246 if (!list_empty(&sctp_sk(sk)->ep->asocs))
248 asoc = list_entry(sctp 247 asoc = list_entry(sctp_sk(sk)->ep->asocs.next,
249 stru 248 struct sctp_association, asocs);
250 return asoc; 249 return asoc;
251 } 250 }
252 251
253 /* Otherwise this is a UDP-style socke 252 /* Otherwise this is a UDP-style socket. */
254 if (id <= SCTP_ALL_ASSOC) 253 if (id <= SCTP_ALL_ASSOC)
255 return NULL; 254 return NULL;
256 255
257 spin_lock_bh(&sctp_assocs_id_lock); 256 spin_lock_bh(&sctp_assocs_id_lock);
258 asoc = (struct sctp_association *)idr_ 257 asoc = (struct sctp_association *)idr_find(&sctp_assocs_id, (int)id);
259 if (asoc && (asoc->base.sk != sk || as 258 if (asoc && (asoc->base.sk != sk || asoc->base.dead))
260 asoc = NULL; 259 asoc = NULL;
261 spin_unlock_bh(&sctp_assocs_id_lock); 260 spin_unlock_bh(&sctp_assocs_id_lock);
262 261
263 return asoc; 262 return asoc;
264 } 263 }
265 264
266 /* Look up the transport from an address and a 265 /* Look up the transport from an address and an assoc id. If both address and
267 * id are specified, the associations matching 266 * id are specified, the associations matching the address and the id should be
268 * the same. 267 * the same.
269 */ 268 */
270 static struct sctp_transport *sctp_addr_id2tra 269 static struct sctp_transport *sctp_addr_id2transport(struct sock *sk,
271 270 struct sockaddr_storage *addr,
272 271 sctp_assoc_t id)
273 { 272 {
274 struct sctp_association *addr_asoc = N 273 struct sctp_association *addr_asoc = NULL, *id_asoc = NULL;
275 struct sctp_af *af = sctp_get_af_speci 274 struct sctp_af *af = sctp_get_af_specific(addr->ss_family);
276 union sctp_addr *laddr = (union sctp_a 275 union sctp_addr *laddr = (union sctp_addr *)addr;
277 struct sctp_transport *transport; 276 struct sctp_transport *transport;
278 277
279 if (!af || sctp_verify_addr(sk, laddr, 278 if (!af || sctp_verify_addr(sk, laddr, af->sockaddr_len))
280 return NULL; 279 return NULL;
281 280
282 addr_asoc = sctp_endpoint_lookup_assoc 281 addr_asoc = sctp_endpoint_lookup_assoc(sctp_sk(sk)->ep,
283 282 laddr,
284 283 &transport);
285 284
286 if (!addr_asoc) 285 if (!addr_asoc)
287 return NULL; 286 return NULL;
288 287
289 id_asoc = sctp_id2assoc(sk, id); 288 id_asoc = sctp_id2assoc(sk, id);
290 if (id_asoc && (id_asoc != addr_asoc)) 289 if (id_asoc && (id_asoc != addr_asoc))
291 return NULL; 290 return NULL;
292 291
293 sctp_get_pf_specific(sk->sk_family)->a 292 sctp_get_pf_specific(sk->sk_family)->addr_to_user(sctp_sk(sk),
294 293 (union sctp_addr *)addr);
295 294
296 return transport; 295 return transport;
297 } 296 }
298 297
299 /* API 3.1.2 bind() - UDP Style Syntax 298 /* API 3.1.2 bind() - UDP Style Syntax
300 * The syntax of bind() is, 299 * The syntax of bind() is,
301 * 300 *
302 * ret = bind(int sd, struct sockaddr *addr, 301 * ret = bind(int sd, struct sockaddr *addr, int addrlen);
303 * 302 *
304 * sd - the socket descriptor returned 303 * sd - the socket descriptor returned by socket().
305 * addr - the address structure (struct s 304 * addr - the address structure (struct sockaddr_in or struct
306 * sockaddr_in6 [RFC 2553]), 305 * sockaddr_in6 [RFC 2553]),
307 * addr_len - the size of the address struct 306 * addr_len - the size of the address structure.
308 */ 307 */
309 static int sctp_bind(struct sock *sk, struct s 308 static int sctp_bind(struct sock *sk, struct sockaddr *addr, int addr_len)
310 { 309 {
311 int retval = 0; 310 int retval = 0;
312 311
313 lock_sock(sk); 312 lock_sock(sk);
314 313
315 pr_debug("%s: sk:%p, addr:%p, addr_len 314 pr_debug("%s: sk:%p, addr:%p, addr_len:%d\n", __func__, sk,
316 addr, addr_len); 315 addr, addr_len);
317 316
318 /* Disallow binding twice. */ 317 /* Disallow binding twice. */
319 if (!sctp_sk(sk)->ep->base.bind_addr.p 318 if (!sctp_sk(sk)->ep->base.bind_addr.port)
320 retval = sctp_do_bind(sk, (uni 319 retval = sctp_do_bind(sk, (union sctp_addr *)addr,
321 addr_len 320 addr_len);
322 else 321 else
323 retval = -EINVAL; 322 retval = -EINVAL;
324 323
325 release_sock(sk); 324 release_sock(sk);
326 325
327 return retval; 326 return retval;
328 } 327 }
329 328
330 static int sctp_get_port_local(struct sock *, 329 static int sctp_get_port_local(struct sock *, union sctp_addr *);
331 330
332 /* Verify this is a valid sockaddr. */ 331 /* Verify this is a valid sockaddr. */
333 static struct sctp_af *sctp_sockaddr_af(struct 332 static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
334 union 333 union sctp_addr *addr, int len)
335 { 334 {
336 struct sctp_af *af; 335 struct sctp_af *af;
337 336
338 /* Check minimum size. */ 337 /* Check minimum size. */
339 if (len < sizeof (struct sockaddr)) 338 if (len < sizeof (struct sockaddr))
340 return NULL; 339 return NULL;
341 340
342 if (!opt->pf->af_supported(addr->sa.sa 341 if (!opt->pf->af_supported(addr->sa.sa_family, opt))
343 return NULL; 342 return NULL;
344 343
345 if (addr->sa.sa_family == AF_INET6) { 344 if (addr->sa.sa_family == AF_INET6) {
346 if (len < SIN6_LEN_RFC2133) 345 if (len < SIN6_LEN_RFC2133)
347 return NULL; 346 return NULL;
348 /* V4 mapped address are reall 347 /* V4 mapped address are really of AF_INET family */
349 if (ipv6_addr_v4mapped(&addr-> 348 if (ipv6_addr_v4mapped(&addr->v6.sin6_addr) &&
350 !opt->pf->af_supported(AF_ 349 !opt->pf->af_supported(AF_INET, opt))
351 return NULL; 350 return NULL;
352 } 351 }
353 352
354 /* If we get this far, af is valid. */ 353 /* If we get this far, af is valid. */
355 af = sctp_get_af_specific(addr->sa.sa_ 354 af = sctp_get_af_specific(addr->sa.sa_family);
356 355
357 if (len < af->sockaddr_len) 356 if (len < af->sockaddr_len)
358 return NULL; 357 return NULL;
359 358
360 return af; 359 return af;
361 } 360 }
362 361
363 static void sctp_auto_asconf_init(struct sctp_ 362 static void sctp_auto_asconf_init(struct sctp_sock *sp)
364 { 363 {
365 struct net *net = sock_net(&sp->inet.s 364 struct net *net = sock_net(&sp->inet.sk);
366 365
367 if (net->sctp.default_auto_asconf) { 366 if (net->sctp.default_auto_asconf) {
368 spin_lock_bh(&net->sctp.addr_w 367 spin_lock_bh(&net->sctp.addr_wq_lock);
369 list_add_tail(&sp->auto_asconf 368 list_add_tail(&sp->auto_asconf_list, &net->sctp.auto_asconf_splist);
370 spin_unlock_bh(&net->sctp.addr 369 spin_unlock_bh(&net->sctp.addr_wq_lock);
371 sp->do_auto_asconf = 1; 370 sp->do_auto_asconf = 1;
372 } 371 }
373 } 372 }
374 373
375 /* Bind a local address either to an endpoint 374 /* Bind a local address either to an endpoint or to an association. */
376 static int sctp_do_bind(struct sock *sk, union 375 static int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
377 { 376 {
378 struct net *net = sock_net(sk); 377 struct net *net = sock_net(sk);
379 struct sctp_sock *sp = sctp_sk(sk); 378 struct sctp_sock *sp = sctp_sk(sk);
380 struct sctp_endpoint *ep = sp->ep; 379 struct sctp_endpoint *ep = sp->ep;
381 struct sctp_bind_addr *bp = &ep->base. 380 struct sctp_bind_addr *bp = &ep->base.bind_addr;
382 struct sctp_af *af; 381 struct sctp_af *af;
383 unsigned short snum; 382 unsigned short snum;
384 int ret = 0; 383 int ret = 0;
385 384
386 /* Common sockaddr verification. */ 385 /* Common sockaddr verification. */
387 af = sctp_sockaddr_af(sp, addr, len); 386 af = sctp_sockaddr_af(sp, addr, len);
388 if (!af) { 387 if (!af) {
389 pr_debug("%s: sk:%p, newaddr:% 388 pr_debug("%s: sk:%p, newaddr:%p, len:%d EINVAL\n",
390 __func__, sk, addr, l 389 __func__, sk, addr, len);
391 return -EINVAL; 390 return -EINVAL;
392 } 391 }
393 392
394 snum = ntohs(addr->v4.sin_port); 393 snum = ntohs(addr->v4.sin_port);
395 394
396 pr_debug("%s: sk:%p, new addr:%pISc, p 395 pr_debug("%s: sk:%p, new addr:%pISc, port:%d, new port:%d, len:%d\n",
397 __func__, sk, &addr->sa, bp-> 396 __func__, sk, &addr->sa, bp->port, snum, len);
398 397
399 /* PF specific bind() address verifica 398 /* PF specific bind() address verification. */
400 if (!sp->pf->bind_verify(sp, addr)) 399 if (!sp->pf->bind_verify(sp, addr))
401 return -EADDRNOTAVAIL; 400 return -EADDRNOTAVAIL;
402 401
403 /* We must either be unbound, or bind 402 /* We must either be unbound, or bind to the same port.
404 * It's OK to allow 0 ports if we are 403 * It's OK to allow 0 ports if we are already bound.
405 * We'll just inhert an already bound 404 * We'll just inhert an already bound port in this case
406 */ 405 */
407 if (bp->port) { 406 if (bp->port) {
408 if (!snum) 407 if (!snum)
409 snum = bp->port; 408 snum = bp->port;
410 else if (snum != bp->port) { 409 else if (snum != bp->port) {
411 pr_debug("%s: new port 410 pr_debug("%s: new port %d doesn't match existing port "
412 "%d\n", __fun 411 "%d\n", __func__, snum, bp->port);
413 return -EINVAL; 412 return -EINVAL;
414 } 413 }
415 } 414 }
416 415
417 if (snum && inet_port_requires_bind_se 416 if (snum && inet_port_requires_bind_service(net, snum) &&
418 !ns_capable(net->user_ns, CAP_NET_ 417 !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE))
419 return -EACCES; 418 return -EACCES;
420 419
421 /* See if the address matches any of t 420 /* See if the address matches any of the addresses we may have
422 * already bound before checking again 421 * already bound before checking against other endpoints.
423 */ 422 */
424 if (sctp_bind_addr_match(bp, addr, sp) 423 if (sctp_bind_addr_match(bp, addr, sp))
425 return -EINVAL; 424 return -EINVAL;
426 425
427 /* Make sure we are allowed to bind he 426 /* Make sure we are allowed to bind here.
428 * The function sctp_get_port_local() 427 * The function sctp_get_port_local() does duplicate address
429 * detection. 428 * detection.
430 */ 429 */
431 addr->v4.sin_port = htons(snum); 430 addr->v4.sin_port = htons(snum);
432 if (sctp_get_port_local(sk, addr)) 431 if (sctp_get_port_local(sk, addr))
433 return -EADDRINUSE; 432 return -EADDRINUSE;
434 433
435 /* Refresh ephemeral port. */ 434 /* Refresh ephemeral port. */
436 if (!bp->port) { 435 if (!bp->port) {
437 bp->port = inet_sk(sk)->inet_n 436 bp->port = inet_sk(sk)->inet_num;
438 sctp_auto_asconf_init(sp); 437 sctp_auto_asconf_init(sp);
439 } 438 }
440 439
441 /* Add the address to the bind address 440 /* Add the address to the bind address list.
442 * Use GFP_ATOMIC since BHs will be di 441 * Use GFP_ATOMIC since BHs will be disabled.
443 */ 442 */
444 ret = sctp_add_bind_addr(bp, addr, af- 443 ret = sctp_add_bind_addr(bp, addr, af->sockaddr_len,
445 SCTP_ADDR_SRC 444 SCTP_ADDR_SRC, GFP_ATOMIC);
446 445
447 if (ret) { 446 if (ret) {
448 sctp_put_port(sk); 447 sctp_put_port(sk);
449 return ret; 448 return ret;
450 } 449 }
451 /* Copy back into socket for getsockna 450 /* Copy back into socket for getsockname() use. */
452 inet_sk(sk)->inet_sport = htons(inet_s 451 inet_sk(sk)->inet_sport = htons(inet_sk(sk)->inet_num);
453 sp->pf->to_sk_saddr(addr, sk); 452 sp->pf->to_sk_saddr(addr, sk);
454 453
455 return ret; 454 return ret;
456 } 455 }
457 456
458 /* ADDIP Section 4.1.1 Congestion Control of 457 /* ADDIP Section 4.1.1 Congestion Control of ASCONF Chunks
459 * 458 *
460 * R1) One and only one ASCONF Chunk MAY be in 459 * R1) One and only one ASCONF Chunk MAY be in transit and unacknowledged
461 * at any one time. If a sender, after sendin 460 * at any one time. If a sender, after sending an ASCONF chunk, decides
462 * it needs to transfer another ASCONF Chunk, 461 * it needs to transfer another ASCONF Chunk, it MUST wait until the
463 * ASCONF-ACK Chunk returns from the previous 462 * ASCONF-ACK Chunk returns from the previous ASCONF Chunk before sending a
464 * subsequent ASCONF. Note this restriction bi 463 * subsequent ASCONF. Note this restriction binds each side, so at any
465 * time two ASCONF may be in-transit on any gi 464 * time two ASCONF may be in-transit on any given association (one sent
466 * from each endpoint). 465 * from each endpoint).
467 */ 466 */
468 static int sctp_send_asconf(struct sctp_associ 467 static int sctp_send_asconf(struct sctp_association *asoc,
469 struct sctp_chunk 468 struct sctp_chunk *chunk)
470 { 469 {
471 int retval = 0; 470 int retval = 0;
472 471
473 /* If there is an outstanding ASCONF c 472 /* If there is an outstanding ASCONF chunk, queue it for later
474 * transmission. 473 * transmission.
475 */ 474 */
476 if (asoc->addip_last_asconf) { 475 if (asoc->addip_last_asconf) {
477 list_add_tail(&chunk->list, &a 476 list_add_tail(&chunk->list, &asoc->addip_chunk_list);
478 goto out; 477 goto out;
479 } 478 }
480 479
481 /* Hold the chunk until an ASCONF_ACK 480 /* Hold the chunk until an ASCONF_ACK is received. */
482 sctp_chunk_hold(chunk); 481 sctp_chunk_hold(chunk);
483 retval = sctp_primitive_ASCONF(asoc->b 482 retval = sctp_primitive_ASCONF(asoc->base.net, asoc, chunk);
484 if (retval) 483 if (retval)
485 sctp_chunk_free(chunk); 484 sctp_chunk_free(chunk);
486 else 485 else
487 asoc->addip_last_asconf = chun 486 asoc->addip_last_asconf = chunk;
488 487
489 out: 488 out:
490 return retval; 489 return retval;
491 } 490 }
492 491
493 /* Add a list of addresses as bind addresses t 492 /* Add a list of addresses as bind addresses to local endpoint or
494 * association. 493 * association.
495 * 494 *
496 * Basically run through each address specifie 495 * Basically run through each address specified in the addrs/addrcnt
497 * array/length pair, determine if it is IPv6 496 * array/length pair, determine if it is IPv6 or IPv4 and call
498 * sctp_do_bind() on it. 497 * sctp_do_bind() on it.
499 * 498 *
500 * If any of them fails, then the operation wi 499 * If any of them fails, then the operation will be reversed and the
501 * ones that were added will be removed. 500 * ones that were added will be removed.
502 * 501 *
503 * Only sctp_setsockopt_bindx() is supposed to 502 * Only sctp_setsockopt_bindx() is supposed to call this function.
504 */ 503 */
505 static int sctp_bindx_add(struct sock *sk, str 504 static int sctp_bindx_add(struct sock *sk, struct sockaddr *addrs, int addrcnt)
506 { 505 {
507 int cnt; 506 int cnt;
508 int retval = 0; 507 int retval = 0;
509 void *addr_buf; 508 void *addr_buf;
510 struct sockaddr *sa_addr; 509 struct sockaddr *sa_addr;
511 struct sctp_af *af; 510 struct sctp_af *af;
512 511
513 pr_debug("%s: sk:%p, addrs:%p, addrcnt 512 pr_debug("%s: sk:%p, addrs:%p, addrcnt:%d\n", __func__, sk,
514 addrs, addrcnt); 513 addrs, addrcnt);
515 514
516 addr_buf = addrs; 515 addr_buf = addrs;
517 for (cnt = 0; cnt < addrcnt; cnt++) { 516 for (cnt = 0; cnt < addrcnt; cnt++) {
518 /* The list may contain either 517 /* The list may contain either IPv4 or IPv6 address;
519 * determine the address lengt 518 * determine the address length for walking thru the list.
520 */ 519 */
521 sa_addr = addr_buf; 520 sa_addr = addr_buf;
522 af = sctp_get_af_specific(sa_a 521 af = sctp_get_af_specific(sa_addr->sa_family);
523 if (!af) { 522 if (!af) {
524 retval = -EINVAL; 523 retval = -EINVAL;
525 goto err_bindx_add; 524 goto err_bindx_add;
526 } 525 }
527 526
528 retval = sctp_do_bind(sk, (uni 527 retval = sctp_do_bind(sk, (union sctp_addr *)sa_addr,
529 af->sock 528 af->sockaddr_len);
530 529
531 addr_buf += af->sockaddr_len; 530 addr_buf += af->sockaddr_len;
532 531
533 err_bindx_add: 532 err_bindx_add:
534 if (retval < 0) { 533 if (retval < 0) {
535 /* Failed. Cleanup the 534 /* Failed. Cleanup the ones that have been added */
536 if (cnt > 0) 535 if (cnt > 0)
537 sctp_bindx_rem 536 sctp_bindx_rem(sk, addrs, cnt);
538 return retval; 537 return retval;
539 } 538 }
540 } 539 }
541 540
542 return retval; 541 return retval;
543 } 542 }
544 543
545 /* Send an ASCONF chunk with Add IP address pa 544 /* Send an ASCONF chunk with Add IP address parameters to all the peers of the
546 * associations that are part of the endpoint 545 * associations that are part of the endpoint indicating that a list of local
547 * addresses are added to the endpoint. 546 * addresses are added to the endpoint.
548 * 547 *
549 * If any of the addresses is already in the b 548 * If any of the addresses is already in the bind address list of the
550 * association, we do not send the chunk for t 549 * association, we do not send the chunk for that association. But it will not
551 * affect other associations. 550 * affect other associations.
552 * 551 *
553 * Only sctp_setsockopt_bindx() is supposed to 552 * Only sctp_setsockopt_bindx() is supposed to call this function.
554 */ 553 */
555 static int sctp_send_asconf_add_ip(struct sock 554 static int sctp_send_asconf_add_ip(struct sock *sk,
556 struct sock 555 struct sockaddr *addrs,
557 int 556 int addrcnt)
558 { 557 {
559 struct sctp_sock *sp; 558 struct sctp_sock *sp;
560 struct sctp_endpoint *ep; 559 struct sctp_endpoint *ep;
561 struct sctp_association *asoc; 560 struct sctp_association *asoc;
562 struct sctp_bind_addr *bp; 561 struct sctp_bind_addr *bp;
563 struct sctp_chunk *chunk 562 struct sctp_chunk *chunk;
564 struct sctp_sockaddr_entry *laddr 563 struct sctp_sockaddr_entry *laddr;
565 union sctp_addr *addr; 564 union sctp_addr *addr;
566 union sctp_addr savead 565 union sctp_addr saveaddr;
567 void *addr_ 566 void *addr_buf;
568 struct sctp_af *af; 567 struct sctp_af *af;
569 struct list_head *p; 568 struct list_head *p;
570 int i; 569 int i;
571 int retval 570 int retval = 0;
572 571
573 sp = sctp_sk(sk); 572 sp = sctp_sk(sk);
574 ep = sp->ep; 573 ep = sp->ep;
575 574
576 if (!ep->asconf_enable) 575 if (!ep->asconf_enable)
577 return retval; 576 return retval;
578 577
579 pr_debug("%s: sk:%p, addrs:%p, addrcnt 578 pr_debug("%s: sk:%p, addrs:%p, addrcnt:%d\n",
580 __func__, sk, addrs, addrcnt) 579 __func__, sk, addrs, addrcnt);
581 580
582 list_for_each_entry(asoc, &ep->asocs, 581 list_for_each_entry(asoc, &ep->asocs, asocs) {
583 if (!asoc->peer.asconf_capable 582 if (!asoc->peer.asconf_capable)
584 continue; 583 continue;
585 584
586 if (asoc->peer.addip_disabled_ 585 if (asoc->peer.addip_disabled_mask & SCTP_PARAM_ADD_IP)
587 continue; 586 continue;
588 587
589 if (!sctp_state(asoc, ESTABLIS 588 if (!sctp_state(asoc, ESTABLISHED))
590 continue; 589 continue;
591 590
592 /* Check if any address in the 591 /* Check if any address in the packed array of addresses is
593 * in the bind address list of 592 * in the bind address list of the association. If so,
594 * do not send the asconf chun 593 * do not send the asconf chunk to its peer, but continue with
595 * other associations. 594 * other associations.
596 */ 595 */
597 addr_buf = addrs; 596 addr_buf = addrs;
598 for (i = 0; i < addrcnt; i++) 597 for (i = 0; i < addrcnt; i++) {
599 addr = addr_buf; 598 addr = addr_buf;
600 af = sctp_get_af_speci 599 af = sctp_get_af_specific(addr->v4.sin_family);
601 if (!af) { 600 if (!af) {
602 retval = -EINV 601 retval = -EINVAL;
603 goto out; 602 goto out;
604 } 603 }
605 604
606 if (sctp_assoc_lookup_ 605 if (sctp_assoc_lookup_laddr(asoc, addr))
607 break; 606 break;
608 607
609 addr_buf += af->sockad 608 addr_buf += af->sockaddr_len;
610 } 609 }
611 if (i < addrcnt) 610 if (i < addrcnt)
612 continue; 611 continue;
613 612
614 /* Use the first valid address 613 /* Use the first valid address in bind addr list of
615 * association as Address Para 614 * association as Address Parameter of ASCONF CHUNK.
616 */ 615 */
617 bp = &asoc->base.bind_addr; 616 bp = &asoc->base.bind_addr;
618 p = bp->address_list.next; 617 p = bp->address_list.next;
619 laddr = list_entry(p, struct s 618 laddr = list_entry(p, struct sctp_sockaddr_entry, list);
620 chunk = sctp_make_asconf_updat 619 chunk = sctp_make_asconf_update_ip(asoc, &laddr->a, addrs,
621 620 addrcnt, SCTP_PARAM_ADD_IP);
622 if (!chunk) { 621 if (!chunk) {
623 retval = -ENOMEM; 622 retval = -ENOMEM;
624 goto out; 623 goto out;
625 } 624 }
626 625
627 /* Add the new addresses to th 626 /* Add the new addresses to the bind address list with
628 * use_as_src set to 0. 627 * use_as_src set to 0.
629 */ 628 */
630 addr_buf = addrs; 629 addr_buf = addrs;
631 for (i = 0; i < addrcnt; i++) 630 for (i = 0; i < addrcnt; i++) {
632 addr = addr_buf; 631 addr = addr_buf;
633 af = sctp_get_af_speci 632 af = sctp_get_af_specific(addr->v4.sin_family);
634 memcpy(&saveaddr, addr 633 memcpy(&saveaddr, addr, af->sockaddr_len);
635 retval = sctp_add_bind 634 retval = sctp_add_bind_addr(bp, &saveaddr,
636 635 sizeof(saveaddr),
637 636 SCTP_ADDR_NEW, GFP_ATOMIC);
638 addr_buf += af->sockad 637 addr_buf += af->sockaddr_len;
639 } 638 }
640 if (asoc->src_out_of_asoc_ok) 639 if (asoc->src_out_of_asoc_ok) {
641 struct sctp_transport 640 struct sctp_transport *trans;
642 641
643 list_for_each_entry(tr 642 list_for_each_entry(trans,
644 &asoc->peer.transp 643 &asoc->peer.transport_addr_list, transports) {
645 trans->cwnd = 644 trans->cwnd = min(4*asoc->pathmtu, max_t(__u32,
646 2*asoc->pa 645 2*asoc->pathmtu, 4380));
647 trans->ssthres 646 trans->ssthresh = asoc->peer.i.a_rwnd;
648 trans->rto = a 647 trans->rto = asoc->rto_initial;
649 sctp_max_rto(a 648 sctp_max_rto(asoc, trans);
650 trans->rtt = t 649 trans->rtt = trans->srtt = trans->rttvar = 0;
651 /* Clear the s 650 /* Clear the source and route cache */
652 sctp_transport 651 sctp_transport_route(trans, NULL,
653 652 sctp_sk(asoc->base.sk));
654 } 653 }
655 } 654 }
656 retval = sctp_send_asconf(asoc 655 retval = sctp_send_asconf(asoc, chunk);
657 } 656 }
658 657
659 out: 658 out:
660 return retval; 659 return retval;
661 } 660 }
662 661
663 /* Remove a list of addresses from bind addres 662 /* Remove a list of addresses from bind addresses list. Do not remove the
664 * last address. 663 * last address.
665 * 664 *
666 * Basically run through each address specifie 665 * Basically run through each address specified in the addrs/addrcnt
667 * array/length pair, determine if it is IPv6 666 * array/length pair, determine if it is IPv6 or IPv4 and call
668 * sctp_del_bind() on it. 667 * sctp_del_bind() on it.
669 * 668 *
670 * If any of them fails, then the operation wi 669 * If any of them fails, then the operation will be reversed and the
671 * ones that were removed will be added back. 670 * ones that were removed will be added back.
672 * 671 *
673 * At least one address has to be left; if onl 672 * At least one address has to be left; if only one address is
674 * available, the operation will return -EBUSY 673 * available, the operation will return -EBUSY.
675 * 674 *
676 * Only sctp_setsockopt_bindx() is supposed to 675 * Only sctp_setsockopt_bindx() is supposed to call this function.
677 */ 676 */
678 static int sctp_bindx_rem(struct sock *sk, str 677 static int sctp_bindx_rem(struct sock *sk, struct sockaddr *addrs, int addrcnt)
679 { 678 {
680 struct sctp_sock *sp = sctp_sk(sk); 679 struct sctp_sock *sp = sctp_sk(sk);
681 struct sctp_endpoint *ep = sp->ep; 680 struct sctp_endpoint *ep = sp->ep;
682 int cnt; 681 int cnt;
683 struct sctp_bind_addr *bp = &ep->base. 682 struct sctp_bind_addr *bp = &ep->base.bind_addr;
684 int retval = 0; 683 int retval = 0;
685 void *addr_buf; 684 void *addr_buf;
686 union sctp_addr *sa_addr; 685 union sctp_addr *sa_addr;
687 struct sctp_af *af; 686 struct sctp_af *af;
688 687
689 pr_debug("%s: sk:%p, addrs:%p, addrcnt 688 pr_debug("%s: sk:%p, addrs:%p, addrcnt:%d\n",
690 __func__, sk, addrs, addrcnt) 689 __func__, sk, addrs, addrcnt);
691 690
692 addr_buf = addrs; 691 addr_buf = addrs;
693 for (cnt = 0; cnt < addrcnt; cnt++) { 692 for (cnt = 0; cnt < addrcnt; cnt++) {
694 /* If the bind address list is 693 /* If the bind address list is empty or if there is only one
695 * bind address, there is noth 694 * bind address, there is nothing more to be removed (we need
696 * at least one address here). 695 * at least one address here).
697 */ 696 */
698 if (list_empty(&bp->address_li 697 if (list_empty(&bp->address_list) ||
699 (sctp_list_single_entry(&b 698 (sctp_list_single_entry(&bp->address_list))) {
700 retval = -EBUSY; 699 retval = -EBUSY;
701 goto err_bindx_rem; 700 goto err_bindx_rem;
702 } 701 }
703 702
704 sa_addr = addr_buf; 703 sa_addr = addr_buf;
705 af = sctp_get_af_specific(sa_a 704 af = sctp_get_af_specific(sa_addr->sa.sa_family);
706 if (!af) { 705 if (!af) {
707 retval = -EINVAL; 706 retval = -EINVAL;
708 goto err_bindx_rem; 707 goto err_bindx_rem;
709 } 708 }
710 709
711 if (!af->addr_valid(sa_addr, s 710 if (!af->addr_valid(sa_addr, sp, NULL)) {
712 retval = -EADDRNOTAVAI 711 retval = -EADDRNOTAVAIL;
713 goto err_bindx_rem; 712 goto err_bindx_rem;
714 } 713 }
715 714
716 if (sa_addr->v4.sin_port && 715 if (sa_addr->v4.sin_port &&
717 sa_addr->v4.sin_port != ht 716 sa_addr->v4.sin_port != htons(bp->port)) {
718 retval = -EINVAL; 717 retval = -EINVAL;
719 goto err_bindx_rem; 718 goto err_bindx_rem;
720 } 719 }
721 720
722 if (!sa_addr->v4.sin_port) 721 if (!sa_addr->v4.sin_port)
723 sa_addr->v4.sin_port = 722 sa_addr->v4.sin_port = htons(bp->port);
724 723
725 /* FIXME - There is probably a 724 /* FIXME - There is probably a need to check if sk->sk_saddr and
726 * sk->sk_rcv_addr are current 725 * sk->sk_rcv_addr are currently set to one of the addresses to
727 * be removed. This is somethi 726 * be removed. This is something which needs to be looked into
728 * when we are fixing the outs 727 * when we are fixing the outstanding issues with multi-homing
729 * socket routing and failover 728 * socket routing and failover schemes. Refer to comments in
730 * sctp_do_bind(). -daisy 729 * sctp_do_bind(). -daisy
731 */ 730 */
732 retval = sctp_del_bind_addr(bp 731 retval = sctp_del_bind_addr(bp, sa_addr);
733 732
734 addr_buf += af->sockaddr_len; 733 addr_buf += af->sockaddr_len;
735 err_bindx_rem: 734 err_bindx_rem:
736 if (retval < 0) { 735 if (retval < 0) {
737 /* Failed. Add the one 736 /* Failed. Add the ones that has been removed back */
738 if (cnt > 0) 737 if (cnt > 0)
739 sctp_bindx_add 738 sctp_bindx_add(sk, addrs, cnt);
740 return retval; 739 return retval;
741 } 740 }
742 } 741 }
743 742
744 return retval; 743 return retval;
745 } 744 }
746 745
747 /* Send an ASCONF chunk with Delete IP address 746 /* Send an ASCONF chunk with Delete IP address parameters to all the peers of
748 * the associations that are part of the endpo 747 * the associations that are part of the endpoint indicating that a list of
749 * local addresses are removed from the endpoi 748 * local addresses are removed from the endpoint.
750 * 749 *
751 * If any of the addresses is already in the b 750 * If any of the addresses is already in the bind address list of the
752 * association, we do not send the chunk for t 751 * association, we do not send the chunk for that association. But it will not
753 * affect other associations. 752 * affect other associations.
754 * 753 *
755 * Only sctp_setsockopt_bindx() is supposed to 754 * Only sctp_setsockopt_bindx() is supposed to call this function.
756 */ 755 */
757 static int sctp_send_asconf_del_ip(struct sock 756 static int sctp_send_asconf_del_ip(struct sock *sk,
758 struct sock 757 struct sockaddr *addrs,
759 int 758 int addrcnt)
760 { 759 {
761 struct sctp_sock *sp; 760 struct sctp_sock *sp;
762 struct sctp_endpoint *ep; 761 struct sctp_endpoint *ep;
763 struct sctp_association *asoc; 762 struct sctp_association *asoc;
764 struct sctp_transport *transport; 763 struct sctp_transport *transport;
765 struct sctp_bind_addr *bp; 764 struct sctp_bind_addr *bp;
766 struct sctp_chunk *chunk; 765 struct sctp_chunk *chunk;
767 union sctp_addr *laddr; 766 union sctp_addr *laddr;
768 void *addr_buf; 767 void *addr_buf;
769 struct sctp_af *af; 768 struct sctp_af *af;
770 struct sctp_sockaddr_entry *saddr; 769 struct sctp_sockaddr_entry *saddr;
771 int i; 770 int i;
772 int retval = 0; 771 int retval = 0;
773 int stored = 0; 772 int stored = 0;
774 773
775 chunk = NULL; 774 chunk = NULL;
776 sp = sctp_sk(sk); 775 sp = sctp_sk(sk);
777 ep = sp->ep; 776 ep = sp->ep;
778 777
779 if (!ep->asconf_enable) 778 if (!ep->asconf_enable)
780 return retval; 779 return retval;
781 780
782 pr_debug("%s: sk:%p, addrs:%p, addrcnt 781 pr_debug("%s: sk:%p, addrs:%p, addrcnt:%d\n",
783 __func__, sk, addrs, addrcnt) 782 __func__, sk, addrs, addrcnt);
784 783
785 list_for_each_entry(asoc, &ep->asocs, 784 list_for_each_entry(asoc, &ep->asocs, asocs) {
786 785
787 if (!asoc->peer.asconf_capable 786 if (!asoc->peer.asconf_capable)
788 continue; 787 continue;
789 788
790 if (asoc->peer.addip_disabled_ 789 if (asoc->peer.addip_disabled_mask & SCTP_PARAM_DEL_IP)
791 continue; 790 continue;
792 791
793 if (!sctp_state(asoc, ESTABLIS 792 if (!sctp_state(asoc, ESTABLISHED))
794 continue; 793 continue;
795 794
796 /* Check if any address in the 795 /* Check if any address in the packed array of addresses is
797 * not present in the bind add 796 * not present in the bind address list of the association.
798 * If so, do not send the asco 797 * If so, do not send the asconf chunk to its peer, but
799 * continue with other associa 798 * continue with other associations.
800 */ 799 */
801 addr_buf = addrs; 800 addr_buf = addrs;
802 for (i = 0; i < addrcnt; i++) 801 for (i = 0; i < addrcnt; i++) {
803 laddr = addr_buf; 802 laddr = addr_buf;
804 af = sctp_get_af_speci 803 af = sctp_get_af_specific(laddr->v4.sin_family);
805 if (!af) { 804 if (!af) {
806 retval = -EINV 805 retval = -EINVAL;
807 goto out; 806 goto out;
808 } 807 }
809 808
810 if (!sctp_assoc_lookup 809 if (!sctp_assoc_lookup_laddr(asoc, laddr))
811 break; 810 break;
812 811
813 addr_buf += af->sockad 812 addr_buf += af->sockaddr_len;
814 } 813 }
815 if (i < addrcnt) 814 if (i < addrcnt)
816 continue; 815 continue;
817 816
818 /* Find one address in the ass 817 /* Find one address in the association's bind address list
819 * that is not in the packed a 818 * that is not in the packed array of addresses. This is to
820 * make sure that we do not de 819 * make sure that we do not delete all the addresses in the
821 * association. 820 * association.
822 */ 821 */
823 bp = &asoc->base.bind_addr; 822 bp = &asoc->base.bind_addr;
824 laddr = sctp_find_unmatch_addr 823 laddr = sctp_find_unmatch_addr(bp, (union sctp_addr *)addrs,
825 824 addrcnt, sp);
826 if ((laddr == NULL) && (addrcn 825 if ((laddr == NULL) && (addrcnt == 1)) {
827 if (asoc->asconf_addr_ 826 if (asoc->asconf_addr_del_pending)
828 continue; 827 continue;
829 asoc->asconf_addr_del_ 828 asoc->asconf_addr_del_pending =
830 kzalloc(sizeof(uni 829 kzalloc(sizeof(union sctp_addr), GFP_ATOMIC);
831 if (asoc->asconf_addr_ 830 if (asoc->asconf_addr_del_pending == NULL) {
832 retval = -ENOM 831 retval = -ENOMEM;
833 goto out; 832 goto out;
834 } 833 }
835 asoc->asconf_addr_del_ 834 asoc->asconf_addr_del_pending->sa.sa_family =
836 addrs->sa_ 835 addrs->sa_family;
837 asoc->asconf_addr_del_ 836 asoc->asconf_addr_del_pending->v4.sin_port =
838 htons(bp-> 837 htons(bp->port);
839 if (addrs->sa_family = 838 if (addrs->sa_family == AF_INET) {
840 struct sockadd 839 struct sockaddr_in *sin;
841 840
842 sin = (struct 841 sin = (struct sockaddr_in *)addrs;
843 asoc->asconf_a 842 asoc->asconf_addr_del_pending->v4.sin_addr.s_addr = sin->sin_addr.s_addr;
844 } else if (addrs->sa_f 843 } else if (addrs->sa_family == AF_INET6) {
845 struct sockadd 844 struct sockaddr_in6 *sin6;
846 845
847 sin6 = (struct 846 sin6 = (struct sockaddr_in6 *)addrs;
848 asoc->asconf_a 847 asoc->asconf_addr_del_pending->v6.sin6_addr = sin6->sin6_addr;
849 } 848 }
850 849
851 pr_debug("%s: keep the 850 pr_debug("%s: keep the last address asoc:%p %pISc at %p\n",
852 __func__, aso 851 __func__, asoc, &asoc->asconf_addr_del_pending->sa,
853 asoc->asconf_ 852 asoc->asconf_addr_del_pending);
854 853
855 asoc->src_out_of_asoc_ 854 asoc->src_out_of_asoc_ok = 1;
856 stored = 1; 855 stored = 1;
857 goto skip_mkasconf; 856 goto skip_mkasconf;
858 } 857 }
859 858
860 if (laddr == NULL) 859 if (laddr == NULL)
861 return -EINVAL; 860 return -EINVAL;
862 861
863 /* We do not need RCU protecti 862 /* We do not need RCU protection throughout this loop
864 * because this is done under 863 * because this is done under a socket lock from the
865 * setsockopt call. 864 * setsockopt call.
866 */ 865 */
867 chunk = sctp_make_asconf_updat 866 chunk = sctp_make_asconf_update_ip(asoc, laddr, addrs, addrcnt,
868 867 SCTP_PARAM_DEL_IP);
869 if (!chunk) { 868 if (!chunk) {
870 retval = -ENOMEM; 869 retval = -ENOMEM;
871 goto out; 870 goto out;
872 } 871 }
873 872
874 skip_mkasconf: 873 skip_mkasconf:
875 /* Reset use_as_src flag for t 874 /* Reset use_as_src flag for the addresses in the bind address
876 * list that are to be deleted 875 * list that are to be deleted.
877 */ 876 */
878 addr_buf = addrs; 877 addr_buf = addrs;
879 for (i = 0; i < addrcnt; i++) 878 for (i = 0; i < addrcnt; i++) {
880 laddr = addr_buf; 879 laddr = addr_buf;
881 af = sctp_get_af_speci 880 af = sctp_get_af_specific(laddr->v4.sin_family);
882 list_for_each_entry(sa 881 list_for_each_entry(saddr, &bp->address_list, list) {
883 if (sctp_cmp_a 882 if (sctp_cmp_addr_exact(&saddr->a, laddr))
884 saddr- 883 saddr->state = SCTP_ADDR_DEL;
885 } 884 }
886 addr_buf += af->sockad 885 addr_buf += af->sockaddr_len;
887 } 886 }
888 887
889 /* Update the route and saddr 888 /* Update the route and saddr entries for all the transports
890 * as some of the addresses in 889 * as some of the addresses in the bind address list are
891 * about to be deleted and can 890 * about to be deleted and cannot be used as source addresses.
892 */ 891 */
893 list_for_each_entry(transport, 892 list_for_each_entry(transport, &asoc->peer.transport_addr_list,
894 transp 893 transports) {
895 sctp_transport_route(t 894 sctp_transport_route(transport, NULL,
896 s 895 sctp_sk(asoc->base.sk));
897 } 896 }
898 897
899 if (stored) 898 if (stored)
900 /* We don't need to tr 899 /* We don't need to transmit ASCONF */
901 continue; 900 continue;
902 retval = sctp_send_asconf(asoc 901 retval = sctp_send_asconf(asoc, chunk);
903 } 902 }
904 out: 903 out:
905 return retval; 904 return retval;
906 } 905 }
907 906
908 /* set addr events to assocs in the endpoint. 907 /* set addr events to assocs in the endpoint. ep and addr_wq must be locked */
909 int sctp_asconf_mgmt(struct sctp_sock *sp, str 908 int sctp_asconf_mgmt(struct sctp_sock *sp, struct sctp_sockaddr_entry *addrw)
910 { 909 {
911 struct sock *sk = sctp_opt2sk(sp); 910 struct sock *sk = sctp_opt2sk(sp);
912 union sctp_addr *addr; 911 union sctp_addr *addr;
913 struct sctp_af *af; 912 struct sctp_af *af;
914 913
915 /* It is safe to write port space in c 914 /* It is safe to write port space in caller. */
916 addr = &addrw->a; 915 addr = &addrw->a;
917 addr->v4.sin_port = htons(sp->ep->base 916 addr->v4.sin_port = htons(sp->ep->base.bind_addr.port);
918 af = sctp_get_af_specific(addr->sa.sa_ 917 af = sctp_get_af_specific(addr->sa.sa_family);
919 if (!af) 918 if (!af)
920 return -EINVAL; 919 return -EINVAL;
921 if (sctp_verify_addr(sk, addr, af->soc 920 if (sctp_verify_addr(sk, addr, af->sockaddr_len))
922 return -EINVAL; 921 return -EINVAL;
923 922
924 if (addrw->state == SCTP_ADDR_NEW) 923 if (addrw->state == SCTP_ADDR_NEW)
925 return sctp_send_asconf_add_ip 924 return sctp_send_asconf_add_ip(sk, (struct sockaddr *)addr, 1);
926 else 925 else
927 return sctp_send_asconf_del_ip 926 return sctp_send_asconf_del_ip(sk, (struct sockaddr *)addr, 1);
928 } 927 }
929 928
930 /* Helper for tunneling sctp_bindx() requests 929 /* Helper for tunneling sctp_bindx() requests through sctp_setsockopt()
931 * 930 *
932 * API 8.1 931 * API 8.1
933 * int sctp_bindx(int sd, struct sockaddr *add 932 * int sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt,
934 * int flags); 933 * int flags);
935 * 934 *
936 * If sd is an IPv4 socket, the addresses pass 935 * If sd is an IPv4 socket, the addresses passed must be IPv4 addresses.
937 * If the sd is an IPv6 socket, the addresses 936 * If the sd is an IPv6 socket, the addresses passed can either be IPv4
938 * or IPv6 addresses. 937 * or IPv6 addresses.
939 * 938 *
940 * A single address may be specified as INADDR 939 * A single address may be specified as INADDR_ANY or IN6ADDR_ANY, see
941 * Section 3.1.2 for this usage. 940 * Section 3.1.2 for this usage.
942 * 941 *
943 * addrs is a pointer to an array of one or mo 942 * addrs is a pointer to an array of one or more socket addresses. Each
944 * address is contained in its appropriate str 943 * address is contained in its appropriate structure (i.e. struct
945 * sockaddr_in or struct sockaddr_in6) the fam 944 * sockaddr_in or struct sockaddr_in6) the family of the address type
946 * must be used to distinguish the address len 945 * must be used to distinguish the address length (note that this
947 * representation is termed a "packed array" o 946 * representation is termed a "packed array" of addresses). The caller
948 * specifies the number of addresses in the ar 947 * specifies the number of addresses in the array with addrcnt.
949 * 948 *
950 * On success, sctp_bindx() returns 0. On fail 949 * On success, sctp_bindx() returns 0. On failure, sctp_bindx() returns
951 * -1, and sets errno to the appropriate error 950 * -1, and sets errno to the appropriate error code.
952 * 951 *
953 * For SCTP, the port given in each socket add 952 * For SCTP, the port given in each socket address must be the same, or
954 * sctp_bindx() will fail, setting errno to EI 953 * sctp_bindx() will fail, setting errno to EINVAL.
955 * 954 *
956 * The flags parameter is formed from the bitw 955 * The flags parameter is formed from the bitwise OR of zero or more of
957 * the following currently defined flags: 956 * the following currently defined flags:
958 * 957 *
959 * SCTP_BINDX_ADD_ADDR 958 * SCTP_BINDX_ADD_ADDR
960 * 959 *
961 * SCTP_BINDX_REM_ADDR 960 * SCTP_BINDX_REM_ADDR
962 * 961 *
963 * SCTP_BINDX_ADD_ADDR directs SCTP to add the 962 * SCTP_BINDX_ADD_ADDR directs SCTP to add the given addresses to the
964 * association, and SCTP_BINDX_REM_ADDR direct 963 * association, and SCTP_BINDX_REM_ADDR directs SCTP to remove the given
965 * addresses from the association. The two fla 964 * addresses from the association. The two flags are mutually exclusive;
966 * if both are given, sctp_bindx() will fail w 965 * if both are given, sctp_bindx() will fail with EINVAL. A caller may
967 * not remove all addresses from an associatio 966 * not remove all addresses from an association; sctp_bindx() will
968 * reject such an attempt with EINVAL. 967 * reject such an attempt with EINVAL.
969 * 968 *
970 * An application can use sctp_bindx(SCTP_BIND 969 * An application can use sctp_bindx(SCTP_BINDX_ADD_ADDR) to associate
971 * additional addresses with an endpoint after 970 * additional addresses with an endpoint after calling bind(). Or use
972 * sctp_bindx(SCTP_BINDX_REM_ADDR) to remove s 971 * sctp_bindx(SCTP_BINDX_REM_ADDR) to remove some addresses a listening
973 * socket is associated with so that no new as 972 * socket is associated with so that no new association accepted will be
974 * associated with those addresses. If the end 973 * associated with those addresses. If the endpoint supports dynamic
975 * address a SCTP_BINDX_REM_ADDR or SCTP_BINDX 974 * address a SCTP_BINDX_REM_ADDR or SCTP_BINDX_ADD_ADDR may cause a
976 * endpoint to send the appropriate message to 975 * endpoint to send the appropriate message to the peer to change the
977 * peers address lists. 976 * peers address lists.
978 * 977 *
979 * Adding and removing addresses from a connec 978 * Adding and removing addresses from a connected association is
980 * optional functionality. Implementations tha 979 * optional functionality. Implementations that do not support this
981 * functionality should return EOPNOTSUPP. 980 * functionality should return EOPNOTSUPP.
982 * 981 *
983 * Basically do nothing but copying the addres 982 * Basically do nothing but copying the addresses from user to kernel
984 * land and invoking either sctp_bindx_add() o 983 * land and invoking either sctp_bindx_add() or sctp_bindx_rem() on the sk.
985 * This is used for tunneling the sctp_bindx() 984 * This is used for tunneling the sctp_bindx() request through sctp_setsockopt()
986 * from userspace. 985 * from userspace.
987 * 986 *
988 * On exit there is no need to do sockfd_put() 987 * On exit there is no need to do sockfd_put(), sys_setsockopt() does
989 * it. 988 * it.
990 * 989 *
991 * sk The sk of the socket 990 * sk The sk of the socket
992 * addrs The pointer to the addresses 991 * addrs The pointer to the addresses
993 * addrssize Size of the addrs buffer 992 * addrssize Size of the addrs buffer
994 * op Operation to perform (add or remo 993 * op Operation to perform (add or remove, see the flags of
995 * sctp_bindx) 994 * sctp_bindx)
996 * 995 *
997 * Returns 0 if ok, <0 errno code on error. 996 * Returns 0 if ok, <0 errno code on error.
998 */ 997 */
999 static int sctp_setsockopt_bindx(struct sock * 998 static int sctp_setsockopt_bindx(struct sock *sk, struct sockaddr *addrs,
1000 int addrs_si 999 int addrs_size, int op)
1001 { 1000 {
1002 int err; 1001 int err;
1003 int addrcnt = 0; 1002 int addrcnt = 0;
1004 int walk_size = 0; 1003 int walk_size = 0;
1005 struct sockaddr *sa_addr; 1004 struct sockaddr *sa_addr;
1006 void *addr_buf = addrs; 1005 void *addr_buf = addrs;
1007 struct sctp_af *af; 1006 struct sctp_af *af;
1008 1007
1009 pr_debug("%s: sk:%p addrs:%p addrs_si 1008 pr_debug("%s: sk:%p addrs:%p addrs_size:%d opt:%d\n",
1010 __func__, sk, addr_buf, addr 1009 __func__, sk, addr_buf, addrs_size, op);
1011 1010
1012 if (unlikely(addrs_size <= 0)) 1011 if (unlikely(addrs_size <= 0))
1013 return -EINVAL; 1012 return -EINVAL;
1014 1013
1015 /* Walk through the addrs buffer and 1014 /* Walk through the addrs buffer and count the number of addresses. */
1016 while (walk_size < addrs_size) { 1015 while (walk_size < addrs_size) {
1017 if (walk_size + sizeof(sa_fam 1016 if (walk_size + sizeof(sa_family_t) > addrs_size)
1018 return -EINVAL; 1017 return -EINVAL;
1019 1018
1020 sa_addr = addr_buf; 1019 sa_addr = addr_buf;
1021 af = sctp_get_af_specific(sa_ 1020 af = sctp_get_af_specific(sa_addr->sa_family);
1022 1021
1023 /* If the address family is n 1022 /* If the address family is not supported or if this address
1024 * causes the address buffer 1023 * causes the address buffer to overflow return EINVAL.
1025 */ 1024 */
1026 if (!af || (walk_size + af->s 1025 if (!af || (walk_size + af->sockaddr_len) > addrs_size)
1027 return -EINVAL; 1026 return -EINVAL;
1028 addrcnt++; 1027 addrcnt++;
1029 addr_buf += af->sockaddr_len; 1028 addr_buf += af->sockaddr_len;
1030 walk_size += af->sockaddr_len 1029 walk_size += af->sockaddr_len;
1031 } 1030 }
1032 1031
1033 /* Do the work. */ 1032 /* Do the work. */
1034 switch (op) { 1033 switch (op) {
1035 case SCTP_BINDX_ADD_ADDR: 1034 case SCTP_BINDX_ADD_ADDR:
1036 /* Allow security module to v 1035 /* Allow security module to validate bindx addresses. */
1037 err = security_sctp_bind_conn 1036 err = security_sctp_bind_connect(sk, SCTP_SOCKOPT_BINDX_ADD,
1038 1037 addrs, addrs_size);
1039 if (err) 1038 if (err)
1040 return err; 1039 return err;
1041 err = sctp_bindx_add(sk, addr 1040 err = sctp_bindx_add(sk, addrs, addrcnt);
1042 if (err) 1041 if (err)
1043 return err; 1042 return err;
1044 return sctp_send_asconf_add_i 1043 return sctp_send_asconf_add_ip(sk, addrs, addrcnt);
1045 case SCTP_BINDX_REM_ADDR: 1044 case SCTP_BINDX_REM_ADDR:
1046 err = sctp_bindx_rem(sk, addr 1045 err = sctp_bindx_rem(sk, addrs, addrcnt);
1047 if (err) 1046 if (err)
1048 return err; 1047 return err;
1049 return sctp_send_asconf_del_i 1048 return sctp_send_asconf_del_ip(sk, addrs, addrcnt);
1050 1049
1051 default: 1050 default:
1052 return -EINVAL; 1051 return -EINVAL;
1053 } 1052 }
1054 } 1053 }
1055 1054
1056 static int sctp_bind_add(struct sock *sk, str 1055 static int sctp_bind_add(struct sock *sk, struct sockaddr *addrs,
1057 int addrlen) 1056 int addrlen)
1058 { 1057 {
1059 int err; 1058 int err;
1060 1059
1061 lock_sock(sk); 1060 lock_sock(sk);
1062 err = sctp_setsockopt_bindx(sk, addrs 1061 err = sctp_setsockopt_bindx(sk, addrs, addrlen, SCTP_BINDX_ADD_ADDR);
1063 release_sock(sk); 1062 release_sock(sk);
1064 return err; 1063 return err;
1065 } 1064 }
1066 1065
1067 static int sctp_connect_new_asoc(struct sctp_ 1066 static int sctp_connect_new_asoc(struct sctp_endpoint *ep,
1068 const union 1067 const union sctp_addr *daddr,
1069 const struct 1068 const struct sctp_initmsg *init,
1070 struct sctp_ 1069 struct sctp_transport **tp)
1071 { 1070 {
1072 struct sctp_association *asoc; 1071 struct sctp_association *asoc;
1073 struct sock *sk = ep->base.sk; 1072 struct sock *sk = ep->base.sk;
1074 struct net *net = sock_net(sk); 1073 struct net *net = sock_net(sk);
1075 enum sctp_scope scope; 1074 enum sctp_scope scope;
1076 int err; 1075 int err;
1077 1076
1078 if (sctp_endpoint_is_peeled_off(ep, d 1077 if (sctp_endpoint_is_peeled_off(ep, daddr))
1079 return -EADDRNOTAVAIL; 1078 return -EADDRNOTAVAIL;
1080 1079
1081 if (!ep->base.bind_addr.port) { 1080 if (!ep->base.bind_addr.port) {
1082 if (sctp_autobind(sk)) 1081 if (sctp_autobind(sk))
1083 return -EAGAIN; 1082 return -EAGAIN;
1084 } else { 1083 } else {
1085 if (inet_port_requires_bind_s 1084 if (inet_port_requires_bind_service(net, ep->base.bind_addr.port) &&
1086 !ns_capable(net->user_ns, 1085 !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE))
1087 return -EACCES; 1086 return -EACCES;
1088 } 1087 }
1089 1088
1090 scope = sctp_scope(daddr); 1089 scope = sctp_scope(daddr);
1091 asoc = sctp_association_new(ep, sk, s 1090 asoc = sctp_association_new(ep, sk, scope, GFP_KERNEL);
1092 if (!asoc) 1091 if (!asoc)
1093 return -ENOMEM; 1092 return -ENOMEM;
1094 1093
1095 err = sctp_assoc_set_bind_addr_from_e 1094 err = sctp_assoc_set_bind_addr_from_ep(asoc, scope, GFP_KERNEL);
1096 if (err < 0) 1095 if (err < 0)
1097 goto free; 1096 goto free;
1098 1097
1099 *tp = sctp_assoc_add_peer(asoc, daddr 1098 *tp = sctp_assoc_add_peer(asoc, daddr, GFP_KERNEL, SCTP_UNKNOWN);
1100 if (!*tp) { 1099 if (!*tp) {
1101 err = -ENOMEM; 1100 err = -ENOMEM;
1102 goto free; 1101 goto free;
1103 } 1102 }
1104 1103
1105 if (!init) 1104 if (!init)
1106 return 0; 1105 return 0;
1107 1106
1108 if (init->sinit_num_ostreams) { 1107 if (init->sinit_num_ostreams) {
1109 __u16 outcnt = init->sinit_nu 1108 __u16 outcnt = init->sinit_num_ostreams;
1110 1109
1111 asoc->c.sinit_num_ostreams = 1110 asoc->c.sinit_num_ostreams = outcnt;
1112 /* outcnt has been changed, n 1111 /* outcnt has been changed, need to re-init stream */
1113 err = sctp_stream_init(&asoc- 1112 err = sctp_stream_init(&asoc->stream, outcnt, 0, GFP_KERNEL);
1114 if (err) 1113 if (err)
1115 goto free; 1114 goto free;
1116 } 1115 }
1117 1116
1118 if (init->sinit_max_instreams) 1117 if (init->sinit_max_instreams)
1119 asoc->c.sinit_max_instreams = 1118 asoc->c.sinit_max_instreams = init->sinit_max_instreams;
1120 1119
1121 if (init->sinit_max_attempts) 1120 if (init->sinit_max_attempts)
1122 asoc->max_init_attempts = ini 1121 asoc->max_init_attempts = init->sinit_max_attempts;
1123 1122
1124 if (init->sinit_max_init_timeo) 1123 if (init->sinit_max_init_timeo)
1125 asoc->max_init_timeo = 1124 asoc->max_init_timeo =
1126 msecs_to_jiffies(init 1125 msecs_to_jiffies(init->sinit_max_init_timeo);
1127 1126
1128 return 0; 1127 return 0;
1129 free: 1128 free:
1130 sctp_association_free(asoc); 1129 sctp_association_free(asoc);
1131 return err; 1130 return err;
1132 } 1131 }
1133 1132
1134 static int sctp_connect_add_peer(struct sctp_ 1133 static int sctp_connect_add_peer(struct sctp_association *asoc,
1135 union sctp_a 1134 union sctp_addr *daddr, int addr_len)
1136 { 1135 {
1137 struct sctp_endpoint *ep = asoc->ep; 1136 struct sctp_endpoint *ep = asoc->ep;
1138 struct sctp_association *old; 1137 struct sctp_association *old;
1139 struct sctp_transport *t; 1138 struct sctp_transport *t;
1140 int err; 1139 int err;
1141 1140
1142 err = sctp_verify_addr(ep->base.sk, d 1141 err = sctp_verify_addr(ep->base.sk, daddr, addr_len);
1143 if (err) 1142 if (err)
1144 return err; 1143 return err;
1145 1144
1146 old = sctp_endpoint_lookup_assoc(ep, 1145 old = sctp_endpoint_lookup_assoc(ep, daddr, &t);
1147 if (old && old != asoc) 1146 if (old && old != asoc)
1148 return old->state >= SCTP_STA 1147 return old->state >= SCTP_STATE_ESTABLISHED ? -EISCONN
1149 1148 : -EALREADY;
1150 1149
1151 if (sctp_endpoint_is_peeled_off(ep, d 1150 if (sctp_endpoint_is_peeled_off(ep, daddr))
1152 return -EADDRNOTAVAIL; 1151 return -EADDRNOTAVAIL;
1153 1152
1154 t = sctp_assoc_add_peer(asoc, daddr, 1153 t = sctp_assoc_add_peer(asoc, daddr, GFP_KERNEL, SCTP_UNKNOWN);
1155 if (!t) 1154 if (!t)
1156 return -ENOMEM; 1155 return -ENOMEM;
1157 1156
1158 return 0; 1157 return 0;
1159 } 1158 }
1160 1159
1161 /* __sctp_connect(struct sock* sk, struct soc 1160 /* __sctp_connect(struct sock* sk, struct sockaddr *kaddrs, int addrs_size)
1162 * 1161 *
1163 * Common routine for handling connect() and 1162 * Common routine for handling connect() and sctp_connectx().
1164 * Connect will come in with just a single ad 1163 * Connect will come in with just a single address.
1165 */ 1164 */
1166 static int __sctp_connect(struct sock *sk, st 1165 static int __sctp_connect(struct sock *sk, struct sockaddr *kaddrs,
1167 int addrs_size, int 1166 int addrs_size, int flags, sctp_assoc_t *assoc_id)
1168 { 1167 {
1169 struct sctp_sock *sp = sctp_sk(sk); 1168 struct sctp_sock *sp = sctp_sk(sk);
1170 struct sctp_endpoint *ep = sp->ep; 1169 struct sctp_endpoint *ep = sp->ep;
1171 struct sctp_transport *transport; 1170 struct sctp_transport *transport;
1172 struct sctp_association *asoc; 1171 struct sctp_association *asoc;
1173 void *addr_buf = kaddrs; 1172 void *addr_buf = kaddrs;
1174 union sctp_addr *daddr; 1173 union sctp_addr *daddr;
1175 struct sctp_af *af; 1174 struct sctp_af *af;
1176 int walk_size, err; 1175 int walk_size, err;
1177 long timeo; 1176 long timeo;
1178 1177
1179 if (sctp_sstate(sk, ESTABLISHED) || s 1178 if (sctp_sstate(sk, ESTABLISHED) || sctp_sstate(sk, CLOSING) ||
1180 (sctp_style(sk, TCP) && sctp_ssta 1179 (sctp_style(sk, TCP) && sctp_sstate(sk, LISTENING)))
1181 return -EISCONN; 1180 return -EISCONN;
1182 1181
1183 daddr = addr_buf; 1182 daddr = addr_buf;
1184 af = sctp_get_af_specific(daddr->sa.s 1183 af = sctp_get_af_specific(daddr->sa.sa_family);
1185 if (!af || af->sockaddr_len > addrs_s 1184 if (!af || af->sockaddr_len > addrs_size)
1186 return -EINVAL; 1185 return -EINVAL;
1187 1186
1188 err = sctp_verify_addr(sk, daddr, af- 1187 err = sctp_verify_addr(sk, daddr, af->sockaddr_len);
1189 if (err) 1188 if (err)
1190 return err; 1189 return err;
1191 1190
1192 asoc = sctp_endpoint_lookup_assoc(ep, 1191 asoc = sctp_endpoint_lookup_assoc(ep, daddr, &transport);
1193 if (asoc) 1192 if (asoc)
1194 return asoc->state >= SCTP_ST 1193 return asoc->state >= SCTP_STATE_ESTABLISHED ? -EISCONN
1195 1194 : -EALREADY;
1196 1195
1197 err = sctp_connect_new_asoc(ep, daddr 1196 err = sctp_connect_new_asoc(ep, daddr, NULL, &transport);
1198 if (err) 1197 if (err)
1199 return err; 1198 return err;
1200 asoc = transport->asoc; 1199 asoc = transport->asoc;
1201 1200
1202 addr_buf += af->sockaddr_len; 1201 addr_buf += af->sockaddr_len;
1203 walk_size = af->sockaddr_len; 1202 walk_size = af->sockaddr_len;
1204 while (walk_size < addrs_size) { 1203 while (walk_size < addrs_size) {
1205 err = -EINVAL; 1204 err = -EINVAL;
1206 if (walk_size + sizeof(sa_fam 1205 if (walk_size + sizeof(sa_family_t) > addrs_size)
1207 goto out_free; 1206 goto out_free;
1208 1207
1209 daddr = addr_buf; 1208 daddr = addr_buf;
1210 af = sctp_get_af_specific(dad 1209 af = sctp_get_af_specific(daddr->sa.sa_family);
1211 if (!af || af->sockaddr_len + 1210 if (!af || af->sockaddr_len + walk_size > addrs_size)
1212 goto out_free; 1211 goto out_free;
1213 1212
1214 if (asoc->peer.port != ntohs( 1213 if (asoc->peer.port != ntohs(daddr->v4.sin_port))
1215 goto out_free; 1214 goto out_free;
1216 1215
1217 err = sctp_connect_add_peer(a 1216 err = sctp_connect_add_peer(asoc, daddr, af->sockaddr_len);
1218 if (err) 1217 if (err)
1219 goto out_free; 1218 goto out_free;
1220 1219
1221 addr_buf += af->sockaddr_len 1220 addr_buf += af->sockaddr_len;
1222 walk_size += af->sockaddr_len 1221 walk_size += af->sockaddr_len;
1223 } 1222 }
1224 1223
1225 /* In case the user of sctp_connectx( 1224 /* In case the user of sctp_connectx() wants an association
1226 * id back, assign one now. 1225 * id back, assign one now.
1227 */ 1226 */
1228 if (assoc_id) { 1227 if (assoc_id) {
1229 err = sctp_assoc_set_id(asoc, 1228 err = sctp_assoc_set_id(asoc, GFP_KERNEL);
1230 if (err < 0) 1229 if (err < 0)
1231 goto out_free; 1230 goto out_free;
1232 } 1231 }
1233 1232
1234 err = sctp_primitive_ASSOCIATE(sock_n 1233 err = sctp_primitive_ASSOCIATE(sock_net(sk), asoc, NULL);
1235 if (err < 0) 1234 if (err < 0)
1236 goto out_free; 1235 goto out_free;
1237 1236
1238 /* Initialize sk's dport and daddr fo 1237 /* Initialize sk's dport and daddr for getpeername() */
1239 inet_sk(sk)->inet_dport = htons(asoc- 1238 inet_sk(sk)->inet_dport = htons(asoc->peer.port);
1240 sp->pf->to_sk_daddr(daddr, sk); 1239 sp->pf->to_sk_daddr(daddr, sk);
1241 sk->sk_err = 0; 1240 sk->sk_err = 0;
1242 1241
1243 if (assoc_id) 1242 if (assoc_id)
1244 *assoc_id = asoc->assoc_id; 1243 *assoc_id = asoc->assoc_id;
1245 1244
1246 timeo = sock_sndtimeo(sk, flags & O_N 1245 timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
1247 return sctp_wait_for_connect(asoc, &t 1246 return sctp_wait_for_connect(asoc, &timeo);
1248 1247
1249 out_free: 1248 out_free:
1250 pr_debug("%s: took out_free path with 1249 pr_debug("%s: took out_free path with asoc:%p kaddrs:%p err:%d\n",
1251 __func__, asoc, kaddrs, err) 1250 __func__, asoc, kaddrs, err);
1252 sctp_association_free(asoc); 1251 sctp_association_free(asoc);
1253 return err; 1252 return err;
1254 } 1253 }
1255 1254
1256 /* Helper for tunneling sctp_connectx() reque 1255 /* Helper for tunneling sctp_connectx() requests through sctp_setsockopt()
1257 * 1256 *
1258 * API 8.9 1257 * API 8.9
1259 * int sctp_connectx(int sd, struct sockaddr 1258 * int sctp_connectx(int sd, struct sockaddr *addrs, int addrcnt,
1260 * sctp_assoc_t *asoc); 1259 * sctp_assoc_t *asoc);
1261 * 1260 *
1262 * If sd is an IPv4 socket, the addresses pas 1261 * If sd is an IPv4 socket, the addresses passed must be IPv4 addresses.
1263 * If the sd is an IPv6 socket, the addresses 1262 * If the sd is an IPv6 socket, the addresses passed can either be IPv4
1264 * or IPv6 addresses. 1263 * or IPv6 addresses.
1265 * 1264 *
1266 * A single address may be specified as INADD 1265 * A single address may be specified as INADDR_ANY or IN6ADDR_ANY, see
1267 * Section 3.1.2 for this usage. 1266 * Section 3.1.2 for this usage.
1268 * 1267 *
1269 * addrs is a pointer to an array of one or m 1268 * addrs is a pointer to an array of one or more socket addresses. Each
1270 * address is contained in its appropriate st 1269 * address is contained in its appropriate structure (i.e. struct
1271 * sockaddr_in or struct sockaddr_in6) the fa 1270 * sockaddr_in or struct sockaddr_in6) the family of the address type
1272 * must be used to distengish the address len 1271 * must be used to distengish the address length (note that this
1273 * representation is termed a "packed array" 1272 * representation is termed a "packed array" of addresses). The caller
1274 * specifies the number of addresses in the a 1273 * specifies the number of addresses in the array with addrcnt.
1275 * 1274 *
1276 * On success, sctp_connectx() returns 0. It 1275 * On success, sctp_connectx() returns 0. It also sets the assoc_id to
1277 * the association id of the new association. 1276 * the association id of the new association. On failure, sctp_connectx()
1278 * returns -1, and sets errno to the appropri 1277 * returns -1, and sets errno to the appropriate error code. The assoc_id
1279 * is not touched by the kernel. 1278 * is not touched by the kernel.
1280 * 1279 *
1281 * For SCTP, the port given in each socket ad 1280 * For SCTP, the port given in each socket address must be the same, or
1282 * sctp_connectx() will fail, setting errno t 1281 * sctp_connectx() will fail, setting errno to EINVAL.
1283 * 1282 *
1284 * An application can use sctp_connectx to in 1283 * An application can use sctp_connectx to initiate an association with
1285 * an endpoint that is multi-homed. Much lik 1284 * an endpoint that is multi-homed. Much like sctp_bindx() this call
1286 * allows a caller to specify multiple addres 1285 * allows a caller to specify multiple addresses at which a peer can be
1287 * reached. The way the SCTP stack uses the 1286 * reached. The way the SCTP stack uses the list of addresses to set up
1288 * the association is implementation dependen 1287 * the association is implementation dependent. This function only
1289 * specifies that the stack will try to make 1288 * specifies that the stack will try to make use of all the addresses in
1290 * the list when needed. 1289 * the list when needed.
1291 * 1290 *
1292 * Note that the list of addresses passed in 1291 * Note that the list of addresses passed in is only used for setting up
1293 * the association. It does not necessarily 1292 * the association. It does not necessarily equal the set of addresses
1294 * the peer uses for the resulting associatio 1293 * the peer uses for the resulting association. If the caller wants to
1295 * find out the set of peer addresses, it mus 1294 * find out the set of peer addresses, it must use sctp_getpaddrs() to
1296 * retrieve them after the association has be 1295 * retrieve them after the association has been set up.
1297 * 1296 *
1298 * Basically do nothing but copying the addre 1297 * Basically do nothing but copying the addresses from user to kernel
1299 * land and invoking either sctp_connectx(). 1298 * land and invoking either sctp_connectx(). This is used for tunneling
1300 * the sctp_connectx() request through sctp_s 1299 * the sctp_connectx() request through sctp_setsockopt() from userspace.
1301 * 1300 *
1302 * On exit there is no need to do sockfd_put( 1301 * On exit there is no need to do sockfd_put(), sys_setsockopt() does
1303 * it. 1302 * it.
1304 * 1303 *
1305 * sk The sk of the socket 1304 * sk The sk of the socket
1306 * addrs The pointer to the addresses 1305 * addrs The pointer to the addresses
1307 * addrssize Size of the addrs buffer 1306 * addrssize Size of the addrs buffer
1308 * 1307 *
1309 * Returns >=0 if ok, <0 errno code on error. 1308 * Returns >=0 if ok, <0 errno code on error.
1310 */ 1309 */
1311 static int __sctp_setsockopt_connectx(struct 1310 static int __sctp_setsockopt_connectx(struct sock *sk, struct sockaddr *kaddrs,
1312 int add 1311 int addrs_size, sctp_assoc_t *assoc_id)
1313 { 1312 {
1314 int err = 0, flags = 0; 1313 int err = 0, flags = 0;
1315 1314
1316 pr_debug("%s: sk:%p addrs:%p addrs_si 1315 pr_debug("%s: sk:%p addrs:%p addrs_size:%d\n",
1317 __func__, sk, kaddrs, addrs_ 1316 __func__, sk, kaddrs, addrs_size);
1318 1317
1319 /* make sure the 1st addr's sa_family 1318 /* make sure the 1st addr's sa_family is accessible later */
1320 if (unlikely(addrs_size < sizeof(sa_f 1319 if (unlikely(addrs_size < sizeof(sa_family_t)))
1321 return -EINVAL; 1320 return -EINVAL;
1322 1321
1323 /* Allow security module to validate 1322 /* Allow security module to validate connectx addresses. */
1324 err = security_sctp_bind_connect(sk, 1323 err = security_sctp_bind_connect(sk, SCTP_SOCKOPT_CONNECTX,
1325 (str 1324 (struct sockaddr *)kaddrs,
1326 add 1325 addrs_size);
1327 if (err) 1326 if (err)
1328 return err; 1327 return err;
1329 1328
1330 /* in-kernel sockets don't generally 1329 /* in-kernel sockets don't generally have a file allocated to them
1331 * if all they do is call sock_create 1330 * if all they do is call sock_create_kern().
1332 */ 1331 */
1333 if (sk->sk_socket->file) 1332 if (sk->sk_socket->file)
1334 flags = sk->sk_socket->file-> 1333 flags = sk->sk_socket->file->f_flags;
1335 1334
1336 return __sctp_connect(sk, kaddrs, add 1335 return __sctp_connect(sk, kaddrs, addrs_size, flags, assoc_id);
1337 } 1336 }
1338 1337
1339 /* 1338 /*
1340 * This is an older interface. It's kept for 1339 * This is an older interface. It's kept for backward compatibility
1341 * to the option that doesn't provide associa 1340 * to the option that doesn't provide association id.
1342 */ 1341 */
1343 static int sctp_setsockopt_connectx_old(struc 1342 static int sctp_setsockopt_connectx_old(struct sock *sk,
1344 struc 1343 struct sockaddr *kaddrs,
1345 int a 1344 int addrs_size)
1346 { 1345 {
1347 return __sctp_setsockopt_connectx(sk, 1346 return __sctp_setsockopt_connectx(sk, kaddrs, addrs_size, NULL);
1348 } 1347 }
1349 1348
1350 /* 1349 /*
1351 * New interface for the API. The since the 1350 * New interface for the API. The since the API is done with a socket
1352 * option, to make it simple we feed back the 1351 * option, to make it simple we feed back the association id is as a return
1353 * indication to the call. Error is always n 1352 * indication to the call. Error is always negative and association id is
1354 * always positive. 1353 * always positive.
1355 */ 1354 */
1356 static int sctp_setsockopt_connectx(struct so 1355 static int sctp_setsockopt_connectx(struct sock *sk,
1357 struct so 1356 struct sockaddr *kaddrs,
1358 int addrs 1357 int addrs_size)
1359 { 1358 {
1360 sctp_assoc_t assoc_id = 0; 1359 sctp_assoc_t assoc_id = 0;
1361 int err = 0; 1360 int err = 0;
1362 1361
1363 err = __sctp_setsockopt_connectx(sk, 1362 err = __sctp_setsockopt_connectx(sk, kaddrs, addrs_size, &assoc_id);
1364 1363
1365 if (err) 1364 if (err)
1366 return err; 1365 return err;
1367 else 1366 else
1368 return assoc_id; 1367 return assoc_id;
1369 } 1368 }
1370 1369
1371 /* 1370 /*
1372 * New (hopefully final) interface for the AP 1371 * New (hopefully final) interface for the API.
1373 * We use the sctp_getaddrs_old structure so 1372 * We use the sctp_getaddrs_old structure so that use-space library
1374 * can avoid any unnecessary allocations. The 1373 * can avoid any unnecessary allocations. The only different part
1375 * is that we store the actual length of the 1374 * is that we store the actual length of the address buffer into the
1376 * addrs_num structure member. That way we ca 1375 * addrs_num structure member. That way we can re-use the existing
1377 * code. 1376 * code.
1378 */ 1377 */
1379 #ifdef CONFIG_COMPAT 1378 #ifdef CONFIG_COMPAT
1380 struct compat_sctp_getaddrs_old { 1379 struct compat_sctp_getaddrs_old {
1381 sctp_assoc_t assoc_id; 1380 sctp_assoc_t assoc_id;
1382 s32 addr_num; 1381 s32 addr_num;
1383 compat_uptr_t addrs; /* st 1382 compat_uptr_t addrs; /* struct sockaddr * */
1384 }; 1383 };
1385 #endif 1384 #endif
1386 1385
1387 static int sctp_getsockopt_connectx3(struct s 1386 static int sctp_getsockopt_connectx3(struct sock *sk, int len,
1388 char __u 1387 char __user *optval,
1389 int __us 1388 int __user *optlen)
1390 { 1389 {
1391 struct sctp_getaddrs_old param; 1390 struct sctp_getaddrs_old param;
1392 sctp_assoc_t assoc_id = 0; 1391 sctp_assoc_t assoc_id = 0;
1393 struct sockaddr *kaddrs; 1392 struct sockaddr *kaddrs;
1394 int err = 0; 1393 int err = 0;
1395 1394
1396 #ifdef CONFIG_COMPAT 1395 #ifdef CONFIG_COMPAT
1397 if (in_compat_syscall()) { 1396 if (in_compat_syscall()) {
1398 struct compat_sctp_getaddrs_o 1397 struct compat_sctp_getaddrs_old param32;
1399 1398
1400 if (len < sizeof(param32)) 1399 if (len < sizeof(param32))
1401 return -EINVAL; 1400 return -EINVAL;
1402 if (copy_from_user(¶m32, 1401 if (copy_from_user(¶m32, optval, sizeof(param32)))
1403 return -EFAULT; 1402 return -EFAULT;
1404 1403
1405 param.assoc_id = param32.asso 1404 param.assoc_id = param32.assoc_id;
1406 param.addr_num = param32.addr 1405 param.addr_num = param32.addr_num;
1407 param.addrs = compat_ptr(para 1406 param.addrs = compat_ptr(param32.addrs);
1408 } else 1407 } else
1409 #endif 1408 #endif
1410 { 1409 {
1411 if (len < sizeof(param)) 1410 if (len < sizeof(param))
1412 return -EINVAL; 1411 return -EINVAL;
1413 if (copy_from_user(¶m, op 1412 if (copy_from_user(¶m, optval, sizeof(param)))
1414 return -EFAULT; 1413 return -EFAULT;
1415 } 1414 }
1416 1415
1417 kaddrs = memdup_user(param.addrs, par 1416 kaddrs = memdup_user(param.addrs, param.addr_num);
1418 if (IS_ERR(kaddrs)) 1417 if (IS_ERR(kaddrs))
1419 return PTR_ERR(kaddrs); 1418 return PTR_ERR(kaddrs);
1420 1419
1421 err = __sctp_setsockopt_connectx(sk, 1420 err = __sctp_setsockopt_connectx(sk, kaddrs, param.addr_num, &assoc_id);
1422 kfree(kaddrs); 1421 kfree(kaddrs);
1423 if (err == 0 || err == -EINPROGRESS) 1422 if (err == 0 || err == -EINPROGRESS) {
1424 if (copy_to_user(optval, &ass 1423 if (copy_to_user(optval, &assoc_id, sizeof(assoc_id)))
1425 return -EFAULT; 1424 return -EFAULT;
1426 if (put_user(sizeof(assoc_id) 1425 if (put_user(sizeof(assoc_id), optlen))
1427 return -EFAULT; 1426 return -EFAULT;
1428 } 1427 }
1429 1428
1430 return err; 1429 return err;
1431 } 1430 }
1432 1431
1433 /* API 3.1.4 close() - UDP Style Syntax 1432 /* API 3.1.4 close() - UDP Style Syntax
1434 * Applications use close() to perform gracef 1433 * Applications use close() to perform graceful shutdown (as described in
1435 * Section 10.1 of [SCTP]) on ALL the associa 1434 * Section 10.1 of [SCTP]) on ALL the associations currently represented
1436 * by a UDP-style socket. 1435 * by a UDP-style socket.
1437 * 1436 *
1438 * The syntax is 1437 * The syntax is
1439 * 1438 *
1440 * ret = close(int sd); 1439 * ret = close(int sd);
1441 * 1440 *
1442 * sd - the socket descriptor of the a 1441 * sd - the socket descriptor of the associations to be closed.
1443 * 1442 *
1444 * To gracefully shutdown a specific associat 1443 * To gracefully shutdown a specific association represented by the
1445 * UDP-style socket, an application should us 1444 * UDP-style socket, an application should use the sendmsg() call,
1446 * passing no user data, but including the ap 1445 * passing no user data, but including the appropriate flag in the
1447 * ancillary data (see Section xxxx). 1446 * ancillary data (see Section xxxx).
1448 * 1447 *
1449 * If sd in the close() call is a branched-of 1448 * If sd in the close() call is a branched-off socket representing only
1450 * one association, the shutdown is performed 1449 * one association, the shutdown is performed on that association only.
1451 * 1450 *
1452 * 4.1.6 close() - TCP Style Syntax 1451 * 4.1.6 close() - TCP Style Syntax
1453 * 1452 *
1454 * Applications use close() to gracefully clo 1453 * Applications use close() to gracefully close down an association.
1455 * 1454 *
1456 * The syntax is: 1455 * The syntax is:
1457 * 1456 *
1458 * int close(int sd); 1457 * int close(int sd);
1459 * 1458 *
1460 * sd - the socket descriptor of th 1459 * sd - the socket descriptor of the association to be closed.
1461 * 1460 *
1462 * After an application calls close() on a so 1461 * After an application calls close() on a socket descriptor, no further
1463 * socket operations will succeed on that des 1462 * socket operations will succeed on that descriptor.
1464 * 1463 *
1465 * API 7.1.4 SO_LINGER 1464 * API 7.1.4 SO_LINGER
1466 * 1465 *
1467 * An application using the TCP-style socket 1466 * An application using the TCP-style socket can use this option to
1468 * perform the SCTP ABORT primitive. The lin 1467 * perform the SCTP ABORT primitive. The linger option structure is:
1469 * 1468 *
1470 * struct linger { 1469 * struct linger {
1471 * int l_onoff; // opt 1470 * int l_onoff; // option on/off
1472 * int l_linger; // lin 1471 * int l_linger; // linger time
1473 * }; 1472 * };
1474 * 1473 *
1475 * To enable the option, set l_onoff to 1. I 1474 * To enable the option, set l_onoff to 1. If the l_linger value is set
1476 * to 0, calling close() is the same as the A 1475 * to 0, calling close() is the same as the ABORT primitive. If the
1477 * value is set to a negative value, the sets 1476 * value is set to a negative value, the setsockopt() call will return
1478 * an error. If the value is set to a positi 1477 * an error. If the value is set to a positive value linger_time, the
1479 * close() can be blocked for at most linger_ 1478 * close() can be blocked for at most linger_time ms. If the graceful
1480 * shutdown phase does not finish during this 1479 * shutdown phase does not finish during this period, close() will
1481 * return but the graceful shutdown phase con 1480 * return but the graceful shutdown phase continues in the system.
1482 */ 1481 */
1483 static void sctp_close(struct sock *sk, long 1482 static void sctp_close(struct sock *sk, long timeout)
1484 { 1483 {
1485 struct net *net = sock_net(sk); 1484 struct net *net = sock_net(sk);
1486 struct sctp_endpoint *ep; 1485 struct sctp_endpoint *ep;
1487 struct sctp_association *asoc; 1486 struct sctp_association *asoc;
1488 struct list_head *pos, *temp; 1487 struct list_head *pos, *temp;
1489 unsigned int data_was_unread; 1488 unsigned int data_was_unread;
1490 1489
1491 pr_debug("%s: sk:%p, timeout:%ld\n", 1490 pr_debug("%s: sk:%p, timeout:%ld\n", __func__, sk, timeout);
1492 1491
1493 lock_sock_nested(sk, SINGLE_DEPTH_NES 1492 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
1494 sk->sk_shutdown = SHUTDOWN_MASK; 1493 sk->sk_shutdown = SHUTDOWN_MASK;
1495 inet_sk_set_state(sk, SCTP_SS_CLOSING 1494 inet_sk_set_state(sk, SCTP_SS_CLOSING);
1496 1495
1497 ep = sctp_sk(sk)->ep; 1496 ep = sctp_sk(sk)->ep;
1498 1497
1499 /* Clean up any skbs sitting on the r 1498 /* Clean up any skbs sitting on the receive queue. */
1500 data_was_unread = sctp_queue_purge_ul 1499 data_was_unread = sctp_queue_purge_ulpevents(&sk->sk_receive_queue);
1501 data_was_unread += sctp_queue_purge_u 1500 data_was_unread += sctp_queue_purge_ulpevents(&sctp_sk(sk)->pd_lobby);
1502 1501
1503 /* Walk all associations on an endpoi 1502 /* Walk all associations on an endpoint. */
1504 list_for_each_safe(pos, temp, &ep->as 1503 list_for_each_safe(pos, temp, &ep->asocs) {
1505 asoc = list_entry(pos, struct 1504 asoc = list_entry(pos, struct sctp_association, asocs);
1506 1505
1507 if (sctp_style(sk, TCP)) { 1506 if (sctp_style(sk, TCP)) {
1508 /* A closed associati 1507 /* A closed association can still be in the list if
1509 * it belongs to a TC 1508 * it belongs to a TCP-style listening socket that is
1510 * not yet accepted. 1509 * not yet accepted. If so, free it. If not, send an
1511 * ABORT or SHUTDOWN 1510 * ABORT or SHUTDOWN based on the linger options.
1512 */ 1511 */
1513 if (sctp_state(asoc, 1512 if (sctp_state(asoc, CLOSED)) {
1514 sctp_associat 1513 sctp_association_free(asoc);
1515 continue; 1514 continue;
1516 } 1515 }
1517 } 1516 }
1518 1517
1519 if (data_was_unread || !skb_q 1518 if (data_was_unread || !skb_queue_empty(&asoc->ulpq.lobby) ||
1520 !skb_queue_empty(&asoc->u 1519 !skb_queue_empty(&asoc->ulpq.reasm) ||
1521 !skb_queue_empty(&asoc->u 1520 !skb_queue_empty(&asoc->ulpq.reasm_uo) ||
1522 (sock_flag(sk, SOCK_LINGE 1521 (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime)) {
1523 struct sctp_chunk *ch 1522 struct sctp_chunk *chunk;
1524 1523
1525 chunk = sctp_make_abo 1524 chunk = sctp_make_abort_user(asoc, NULL, 0);
1526 sctp_primitive_ABORT( 1525 sctp_primitive_ABORT(net, asoc, chunk);
1527 } else 1526 } else
1528 sctp_primitive_SHUTDO 1527 sctp_primitive_SHUTDOWN(net, asoc, NULL);
1529 } 1528 }
1530 1529
1531 /* On a TCP-style socket, block for a 1530 /* On a TCP-style socket, block for at most linger_time if set. */
1532 if (sctp_style(sk, TCP) && timeout) 1531 if (sctp_style(sk, TCP) && timeout)
1533 sctp_wait_for_close(sk, timeo 1532 sctp_wait_for_close(sk, timeout);
1534 1533
1535 /* This will run the backlog queue. 1534 /* This will run the backlog queue. */
1536 release_sock(sk); 1535 release_sock(sk);
1537 1536
1538 /* Supposedly, no process has access 1537 /* Supposedly, no process has access to the socket, but
1539 * the net layers still may. 1538 * the net layers still may.
1540 * Also, sctp_destroy_sock() needs to 1539 * Also, sctp_destroy_sock() needs to be called with addr_wq_lock
1541 * held and that should be grabbed be 1540 * held and that should be grabbed before socket lock.
1542 */ 1541 */
1543 spin_lock_bh(&net->sctp.addr_wq_lock) 1542 spin_lock_bh(&net->sctp.addr_wq_lock);
1544 bh_lock_sock_nested(sk); 1543 bh_lock_sock_nested(sk);
1545 1544
1546 /* Hold the sock, since sk_common_rel 1545 /* Hold the sock, since sk_common_release() will put sock_put()
1547 * and we have just a little more cle 1546 * and we have just a little more cleanup.
1548 */ 1547 */
1549 sock_hold(sk); 1548 sock_hold(sk);
1550 sk_common_release(sk); 1549 sk_common_release(sk);
1551 1550
1552 bh_unlock_sock(sk); 1551 bh_unlock_sock(sk);
1553 spin_unlock_bh(&net->sctp.addr_wq_loc 1552 spin_unlock_bh(&net->sctp.addr_wq_lock);
1554 1553
1555 sock_put(sk); 1554 sock_put(sk);
1556 1555
1557 SCTP_DBG_OBJCNT_DEC(sock); 1556 SCTP_DBG_OBJCNT_DEC(sock);
1558 } 1557 }
1559 1558
1560 /* Handle EPIPE error. */ 1559 /* Handle EPIPE error. */
1561 static int sctp_error(struct sock *sk, int fl 1560 static int sctp_error(struct sock *sk, int flags, int err)
1562 { 1561 {
1563 if (err == -EPIPE) 1562 if (err == -EPIPE)
1564 err = sock_error(sk) ? : -EPI 1563 err = sock_error(sk) ? : -EPIPE;
1565 if (err == -EPIPE && !(flags & MSG_NO 1564 if (err == -EPIPE && !(flags & MSG_NOSIGNAL))
1566 send_sig(SIGPIPE, current, 0) 1565 send_sig(SIGPIPE, current, 0);
1567 return err; 1566 return err;
1568 } 1567 }
1569 1568
1570 /* API 3.1.3 sendmsg() - UDP Style Syntax 1569 /* API 3.1.3 sendmsg() - UDP Style Syntax
1571 * 1570 *
1572 * An application uses sendmsg() and recvmsg( 1571 * An application uses sendmsg() and recvmsg() calls to transmit data to
1573 * and receive data from its peer. 1572 * and receive data from its peer.
1574 * 1573 *
1575 * ssize_t sendmsg(int socket, const struct 1574 * ssize_t sendmsg(int socket, const struct msghdr *message,
1576 * int flags); 1575 * int flags);
1577 * 1576 *
1578 * socket - the socket descriptor of the en 1577 * socket - the socket descriptor of the endpoint.
1579 * message - pointer to the msghdr structure 1578 * message - pointer to the msghdr structure which contains a single
1580 * user message and possibly some 1579 * user message and possibly some ancillary data.
1581 * 1580 *
1582 * See Section 5 for complete desc 1581 * See Section 5 for complete description of the data
1583 * structures. 1582 * structures.
1584 * 1583 *
1585 * flags - flags sent or received with the 1584 * flags - flags sent or received with the user message, see Section
1586 * 5 for complete description of t 1585 * 5 for complete description of the flags.
1587 * 1586 *
1588 * Note: This function could use a rewrite e 1587 * Note: This function could use a rewrite especially when explicit
1589 * connect support comes in. 1588 * connect support comes in.
1590 */ 1589 */
1591 /* BUG: We do not implement the equivalent o 1590 /* BUG: We do not implement the equivalent of sk_stream_wait_memory(). */
1592 1591
1593 static int sctp_msghdr_parse(const struct msg 1592 static int sctp_msghdr_parse(const struct msghdr *msg,
1594 struct sctp_cmsg 1593 struct sctp_cmsgs *cmsgs);
1595 1594
1596 static int sctp_sendmsg_parse(struct sock *sk 1595 static int sctp_sendmsg_parse(struct sock *sk, struct sctp_cmsgs *cmsgs,
1597 struct sctp_snd 1596 struct sctp_sndrcvinfo *srinfo,
1598 const struct ms 1597 const struct msghdr *msg, size_t msg_len)
1599 { 1598 {
1600 __u16 sflags; 1599 __u16 sflags;
1601 int err; 1600 int err;
1602 1601
1603 if (sctp_sstate(sk, LISTENING) && sct 1602 if (sctp_sstate(sk, LISTENING) && sctp_style(sk, TCP))
1604 return -EPIPE; 1603 return -EPIPE;
1605 1604
1606 if (msg_len > sk->sk_sndbuf) 1605 if (msg_len > sk->sk_sndbuf)
1607 return -EMSGSIZE; 1606 return -EMSGSIZE;
1608 1607
1609 memset(cmsgs, 0, sizeof(*cmsgs)); 1608 memset(cmsgs, 0, sizeof(*cmsgs));
1610 err = sctp_msghdr_parse(msg, cmsgs); 1609 err = sctp_msghdr_parse(msg, cmsgs);
1611 if (err) { 1610 if (err) {
1612 pr_debug("%s: msghdr parse er 1611 pr_debug("%s: msghdr parse err:%x\n", __func__, err);
1613 return err; 1612 return err;
1614 } 1613 }
1615 1614
1616 memset(srinfo, 0, sizeof(*srinfo)); 1615 memset(srinfo, 0, sizeof(*srinfo));
1617 if (cmsgs->srinfo) { 1616 if (cmsgs->srinfo) {
1618 srinfo->sinfo_stream = cmsgs- 1617 srinfo->sinfo_stream = cmsgs->srinfo->sinfo_stream;
1619 srinfo->sinfo_flags = cmsgs-> 1618 srinfo->sinfo_flags = cmsgs->srinfo->sinfo_flags;
1620 srinfo->sinfo_ppid = cmsgs->s 1619 srinfo->sinfo_ppid = cmsgs->srinfo->sinfo_ppid;
1621 srinfo->sinfo_context = cmsgs 1620 srinfo->sinfo_context = cmsgs->srinfo->sinfo_context;
1622 srinfo->sinfo_assoc_id = cmsg 1621 srinfo->sinfo_assoc_id = cmsgs->srinfo->sinfo_assoc_id;
1623 srinfo->sinfo_timetolive = cm 1622 srinfo->sinfo_timetolive = cmsgs->srinfo->sinfo_timetolive;
1624 } 1623 }
1625 1624
1626 if (cmsgs->sinfo) { 1625 if (cmsgs->sinfo) {
1627 srinfo->sinfo_stream = cmsgs- 1626 srinfo->sinfo_stream = cmsgs->sinfo->snd_sid;
1628 srinfo->sinfo_flags = cmsgs-> 1627 srinfo->sinfo_flags = cmsgs->sinfo->snd_flags;
1629 srinfo->sinfo_ppid = cmsgs->s 1628 srinfo->sinfo_ppid = cmsgs->sinfo->snd_ppid;
1630 srinfo->sinfo_context = cmsgs 1629 srinfo->sinfo_context = cmsgs->sinfo->snd_context;
1631 srinfo->sinfo_assoc_id = cmsg 1630 srinfo->sinfo_assoc_id = cmsgs->sinfo->snd_assoc_id;
1632 } 1631 }
1633 1632
1634 if (cmsgs->prinfo) { 1633 if (cmsgs->prinfo) {
1635 srinfo->sinfo_timetolive = cm 1634 srinfo->sinfo_timetolive = cmsgs->prinfo->pr_value;
1636 SCTP_PR_SET_POLICY(srinfo->si 1635 SCTP_PR_SET_POLICY(srinfo->sinfo_flags,
1637 cmsgs->pri 1636 cmsgs->prinfo->pr_policy);
1638 } 1637 }
1639 1638
1640 sflags = srinfo->sinfo_flags; 1639 sflags = srinfo->sinfo_flags;
1641 if (!sflags && msg_len) 1640 if (!sflags && msg_len)
1642 return 0; 1641 return 0;
1643 1642
1644 if (sctp_style(sk, TCP) && (sflags & 1643 if (sctp_style(sk, TCP) && (sflags & (SCTP_EOF | SCTP_ABORT)))
1645 return -EINVAL; 1644 return -EINVAL;
1646 1645
1647 if (((sflags & SCTP_EOF) && msg_len > 1646 if (((sflags & SCTP_EOF) && msg_len > 0) ||
1648 (!(sflags & (SCTP_EOF | SCTP_ABOR 1647 (!(sflags & (SCTP_EOF | SCTP_ABORT)) && msg_len == 0))
1649 return -EINVAL; 1648 return -EINVAL;
1650 1649
1651 if ((sflags & SCTP_ADDR_OVER) && !msg 1650 if ((sflags & SCTP_ADDR_OVER) && !msg->msg_name)
1652 return -EINVAL; 1651 return -EINVAL;
1653 1652
1654 return 0; 1653 return 0;
1655 } 1654 }
1656 1655
1657 static int sctp_sendmsg_new_asoc(struct sock 1656 static int sctp_sendmsg_new_asoc(struct sock *sk, __u16 sflags,
1658 struct sctp_ 1657 struct sctp_cmsgs *cmsgs,
1659 union sctp_a 1658 union sctp_addr *daddr,
1660 struct sctp_ 1659 struct sctp_transport **tp)
1661 { 1660 {
1662 struct sctp_endpoint *ep = sctp_sk(sk 1661 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
1663 struct sctp_association *asoc; 1662 struct sctp_association *asoc;
1664 struct cmsghdr *cmsg; 1663 struct cmsghdr *cmsg;
1665 __be32 flowinfo = 0; 1664 __be32 flowinfo = 0;
1666 struct sctp_af *af; 1665 struct sctp_af *af;
1667 int err; 1666 int err;
1668 1667
1669 *tp = NULL; 1668 *tp = NULL;
1670 1669
1671 if (sflags & (SCTP_EOF | SCTP_ABORT)) 1670 if (sflags & (SCTP_EOF | SCTP_ABORT))
1672 return -EINVAL; 1671 return -EINVAL;
1673 1672
1674 if (sctp_style(sk, TCP) && (sctp_ssta 1673 if (sctp_style(sk, TCP) && (sctp_sstate(sk, ESTABLISHED) ||
1675 sctp_ssta 1674 sctp_sstate(sk, CLOSING)))
1676 return -EADDRNOTAVAIL; 1675 return -EADDRNOTAVAIL;
1677 1676
1678 /* Label connection socket for first 1677 /* Label connection socket for first association 1-to-many
1679 * style for client sequence socket() 1678 * style for client sequence socket()->sendmsg(). This
1680 * needs to be done before sctp_assoc 1679 * needs to be done before sctp_assoc_add_peer() as that will
1681 * set up the initial packet that nee 1680 * set up the initial packet that needs to account for any
1682 * security ip options (CIPSO/CALIPSO 1681 * security ip options (CIPSO/CALIPSO) added to the packet.
1683 */ 1682 */
1684 af = sctp_get_af_specific(daddr->sa.s 1683 af = sctp_get_af_specific(daddr->sa.sa_family);
1685 if (!af) 1684 if (!af)
1686 return -EINVAL; 1685 return -EINVAL;
1687 err = security_sctp_bind_connect(sk, 1686 err = security_sctp_bind_connect(sk, SCTP_SENDMSG_CONNECT,
1688 (str 1687 (struct sockaddr *)daddr,
1689 af-> 1688 af->sockaddr_len);
1690 if (err < 0) 1689 if (err < 0)
1691 return err; 1690 return err;
1692 1691
1693 err = sctp_connect_new_asoc(ep, daddr 1692 err = sctp_connect_new_asoc(ep, daddr, cmsgs->init, tp);
1694 if (err) 1693 if (err)
1695 return err; 1694 return err;
1696 asoc = (*tp)->asoc; 1695 asoc = (*tp)->asoc;
1697 1696
1698 if (!cmsgs->addrs_msg) 1697 if (!cmsgs->addrs_msg)
1699 return 0; 1698 return 0;
1700 1699
1701 if (daddr->sa.sa_family == AF_INET6) 1700 if (daddr->sa.sa_family == AF_INET6)
1702 flowinfo = daddr->v6.sin6_flo 1701 flowinfo = daddr->v6.sin6_flowinfo;
1703 1702
1704 /* sendv addr list parse */ 1703 /* sendv addr list parse */
1705 for_each_cmsghdr(cmsg, cmsgs->addrs_m 1704 for_each_cmsghdr(cmsg, cmsgs->addrs_msg) {
1706 union sctp_addr _daddr; 1705 union sctp_addr _daddr;
1707 int dlen; 1706 int dlen;
1708 1707
1709 if (cmsg->cmsg_level != IPPRO 1708 if (cmsg->cmsg_level != IPPROTO_SCTP ||
1710 (cmsg->cmsg_type != SCTP_ 1709 (cmsg->cmsg_type != SCTP_DSTADDRV4 &&
1711 cmsg->cmsg_type != SCTP_ 1710 cmsg->cmsg_type != SCTP_DSTADDRV6))
1712 continue; 1711 continue;
1713 1712
1714 daddr = &_daddr; 1713 daddr = &_daddr;
1715 memset(daddr, 0, sizeof(*dadd 1714 memset(daddr, 0, sizeof(*daddr));
1716 dlen = cmsg->cmsg_len - sizeo 1715 dlen = cmsg->cmsg_len - sizeof(struct cmsghdr);
1717 if (cmsg->cmsg_type == SCTP_D 1716 if (cmsg->cmsg_type == SCTP_DSTADDRV4) {
1718 if (dlen < sizeof(str 1717 if (dlen < sizeof(struct in_addr)) {
1719 err = -EINVAL 1718 err = -EINVAL;
1720 goto free; 1719 goto free;
1721 } 1720 }
1722 1721
1723 dlen = sizeof(struct 1722 dlen = sizeof(struct in_addr);
1724 daddr->v4.sin_family 1723 daddr->v4.sin_family = AF_INET;
1725 daddr->v4.sin_port = 1724 daddr->v4.sin_port = htons(asoc->peer.port);
1726 memcpy(&daddr->v4.sin 1725 memcpy(&daddr->v4.sin_addr, CMSG_DATA(cmsg), dlen);
1727 } else { 1726 } else {
1728 if (dlen < sizeof(str 1727 if (dlen < sizeof(struct in6_addr)) {
1729 err = -EINVAL 1728 err = -EINVAL;
1730 goto free; 1729 goto free;
1731 } 1730 }
1732 1731
1733 dlen = sizeof(struct 1732 dlen = sizeof(struct in6_addr);
1734 daddr->v6.sin6_flowin 1733 daddr->v6.sin6_flowinfo = flowinfo;
1735 daddr->v6.sin6_family 1734 daddr->v6.sin6_family = AF_INET6;
1736 daddr->v6.sin6_port = 1735 daddr->v6.sin6_port = htons(asoc->peer.port);
1737 memcpy(&daddr->v6.sin 1736 memcpy(&daddr->v6.sin6_addr, CMSG_DATA(cmsg), dlen);
1738 } 1737 }
1739 1738
1740 err = sctp_connect_add_peer(a 1739 err = sctp_connect_add_peer(asoc, daddr, sizeof(*daddr));
1741 if (err) 1740 if (err)
1742 goto free; 1741 goto free;
1743 } 1742 }
1744 1743
1745 return 0; 1744 return 0;
1746 1745
1747 free: 1746 free:
1748 sctp_association_free(asoc); 1747 sctp_association_free(asoc);
1749 return err; 1748 return err;
1750 } 1749 }
1751 1750
1752 static int sctp_sendmsg_check_sflags(struct s 1751 static int sctp_sendmsg_check_sflags(struct sctp_association *asoc,
1753 __u16 sf 1752 __u16 sflags, struct msghdr *msg,
1754 size_t m 1753 size_t msg_len)
1755 { 1754 {
1756 struct sock *sk = asoc->base.sk; 1755 struct sock *sk = asoc->base.sk;
1757 struct net *net = sock_net(sk); 1756 struct net *net = sock_net(sk);
1758 1757
1759 if (sctp_state(asoc, CLOSED) && sctp_ 1758 if (sctp_state(asoc, CLOSED) && sctp_style(sk, TCP))
1760 return -EPIPE; 1759 return -EPIPE;
1761 1760
1762 if ((sflags & SCTP_SENDALL) && sctp_s 1761 if ((sflags & SCTP_SENDALL) && sctp_style(sk, UDP) &&
1763 !sctp_state(asoc, ESTABLISHED)) 1762 !sctp_state(asoc, ESTABLISHED))
1764 return 0; 1763 return 0;
1765 1764
1766 if (sflags & SCTP_EOF) { 1765 if (sflags & SCTP_EOF) {
1767 pr_debug("%s: shutting down a 1766 pr_debug("%s: shutting down association:%p\n", __func__, asoc);
1768 sctp_primitive_SHUTDOWN(net, 1767 sctp_primitive_SHUTDOWN(net, asoc, NULL);
1769 1768
1770 return 0; 1769 return 0;
1771 } 1770 }
1772 1771
1773 if (sflags & SCTP_ABORT) { 1772 if (sflags & SCTP_ABORT) {
1774 struct sctp_chunk *chunk; 1773 struct sctp_chunk *chunk;
1775 1774
1776 chunk = sctp_make_abort_user( 1775 chunk = sctp_make_abort_user(asoc, msg, msg_len);
1777 if (!chunk) 1776 if (!chunk)
1778 return -ENOMEM; 1777 return -ENOMEM;
1779 1778
1780 pr_debug("%s: aborting associ 1779 pr_debug("%s: aborting association:%p\n", __func__, asoc);
1781 sctp_primitive_ABORT(net, aso 1780 sctp_primitive_ABORT(net, asoc, chunk);
1782 iov_iter_revert(&msg->msg_ite 1781 iov_iter_revert(&msg->msg_iter, msg_len);
1783 1782
1784 return 0; 1783 return 0;
1785 } 1784 }
1786 1785
1787 return 1; 1786 return 1;
1788 } 1787 }
1789 1788
1790 static int sctp_sendmsg_to_asoc(struct sctp_a 1789 static int sctp_sendmsg_to_asoc(struct sctp_association *asoc,
1791 struct msghdr 1790 struct msghdr *msg, size_t msg_len,
1792 struct sctp_t 1791 struct sctp_transport *transport,
1793 struct sctp_s 1792 struct sctp_sndrcvinfo *sinfo)
1794 { 1793 {
1795 struct sock *sk = asoc->base.sk; 1794 struct sock *sk = asoc->base.sk;
1796 struct sctp_sock *sp = sctp_sk(sk); 1795 struct sctp_sock *sp = sctp_sk(sk);
1797 struct net *net = sock_net(sk); 1796 struct net *net = sock_net(sk);
1798 struct sctp_datamsg *datamsg; 1797 struct sctp_datamsg *datamsg;
1799 bool wait_connect = false; 1798 bool wait_connect = false;
1800 struct sctp_chunk *chunk; 1799 struct sctp_chunk *chunk;
1801 long timeo; 1800 long timeo;
1802 int err; 1801 int err;
1803 1802
1804 if (sinfo->sinfo_stream >= asoc->stre 1803 if (sinfo->sinfo_stream >= asoc->stream.outcnt) {
1805 err = -EINVAL; 1804 err = -EINVAL;
1806 goto err; 1805 goto err;
1807 } 1806 }
1808 1807
1809 if (unlikely(!SCTP_SO(&asoc->stream, 1808 if (unlikely(!SCTP_SO(&asoc->stream, sinfo->sinfo_stream)->ext)) {
1810 err = sctp_stream_init_ext(&a 1809 err = sctp_stream_init_ext(&asoc->stream, sinfo->sinfo_stream);
1811 if (err) 1810 if (err)
1812 goto err; 1811 goto err;
1813 } 1812 }
1814 1813
1815 if (sp->disable_fragments && msg_len 1814 if (sp->disable_fragments && msg_len > asoc->frag_point) {
1816 err = -EMSGSIZE; 1815 err = -EMSGSIZE;
1817 goto err; 1816 goto err;
1818 } 1817 }
1819 1818
1820 if (asoc->pmtu_pending) { 1819 if (asoc->pmtu_pending) {
1821 if (sp->param_flags & SPP_PMT 1820 if (sp->param_flags & SPP_PMTUD_ENABLE)
1822 sctp_assoc_sync_pmtu( 1821 sctp_assoc_sync_pmtu(asoc);
1823 asoc->pmtu_pending = 0; 1822 asoc->pmtu_pending = 0;
1824 } 1823 }
1825 1824
1826 if (sctp_wspace(asoc) < (int)msg_len) 1825 if (sctp_wspace(asoc) < (int)msg_len)
1827 sctp_prsctp_prune(asoc, sinfo 1826 sctp_prsctp_prune(asoc, sinfo, msg_len - sctp_wspace(asoc));
1828 1827
1829 if (sctp_wspace(asoc) <= 0 || !sk_wme 1828 if (sctp_wspace(asoc) <= 0 || !sk_wmem_schedule(sk, msg_len)) {
1830 timeo = sock_sndtimeo(sk, msg 1829 timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT);
1831 err = sctp_wait_for_sndbuf(as 1830 err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len);
1832 if (err) 1831 if (err)
1833 goto err; 1832 goto err;
1834 if (unlikely(sinfo->sinfo_str 1833 if (unlikely(sinfo->sinfo_stream >= asoc->stream.outcnt)) {
1835 err = -EINVAL; 1834 err = -EINVAL;
1836 goto err; 1835 goto err;
1837 } 1836 }
1838 } 1837 }
1839 1838
1840 if (sctp_state(asoc, CLOSED)) { 1839 if (sctp_state(asoc, CLOSED)) {
1841 err = sctp_primitive_ASSOCIAT 1840 err = sctp_primitive_ASSOCIATE(net, asoc, NULL);
1842 if (err) 1841 if (err)
1843 goto err; 1842 goto err;
1844 1843
1845 if (asoc->ep->intl_enable) { 1844 if (asoc->ep->intl_enable) {
1846 timeo = sock_sndtimeo 1845 timeo = sock_sndtimeo(sk, 0);
1847 err = sctp_wait_for_c 1846 err = sctp_wait_for_connect(asoc, &timeo);
1848 if (err) { 1847 if (err) {
1849 err = -ESRCH; 1848 err = -ESRCH;
1850 goto err; 1849 goto err;
1851 } 1850 }
1852 } else { 1851 } else {
1853 wait_connect = true; 1852 wait_connect = true;
1854 } 1853 }
1855 1854
1856 pr_debug("%s: we associated p 1855 pr_debug("%s: we associated primitively\n", __func__);
1857 } 1856 }
1858 1857
1859 datamsg = sctp_datamsg_from_user(asoc 1858 datamsg = sctp_datamsg_from_user(asoc, sinfo, &msg->msg_iter);
1860 if (IS_ERR(datamsg)) { 1859 if (IS_ERR(datamsg)) {
1861 err = PTR_ERR(datamsg); 1860 err = PTR_ERR(datamsg);
1862 goto err; 1861 goto err;
1863 } 1862 }
1864 1863
1865 asoc->force_delay = !!(msg->msg_flags 1864 asoc->force_delay = !!(msg->msg_flags & MSG_MORE);
1866 1865
1867 list_for_each_entry(chunk, &datamsg-> 1866 list_for_each_entry(chunk, &datamsg->chunks, frag_list) {
1868 sctp_chunk_hold(chunk); 1867 sctp_chunk_hold(chunk);
1869 sctp_set_owner_w(chunk); 1868 sctp_set_owner_w(chunk);
1870 chunk->transport = transport; 1869 chunk->transport = transport;
1871 } 1870 }
1872 1871
1873 err = sctp_primitive_SEND(net, asoc, 1872 err = sctp_primitive_SEND(net, asoc, datamsg);
1874 if (err) { 1873 if (err) {
1875 sctp_datamsg_free(datamsg); 1874 sctp_datamsg_free(datamsg);
1876 goto err; 1875 goto err;
1877 } 1876 }
1878 1877
1879 pr_debug("%s: we sent primitively\n", 1878 pr_debug("%s: we sent primitively\n", __func__);
1880 1879
1881 sctp_datamsg_put(datamsg); 1880 sctp_datamsg_put(datamsg);
1882 1881
1883 if (unlikely(wait_connect)) { 1882 if (unlikely(wait_connect)) {
1884 timeo = sock_sndtimeo(sk, msg 1883 timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT);
1885 sctp_wait_for_connect(asoc, & 1884 sctp_wait_for_connect(asoc, &timeo);
1886 } 1885 }
1887 1886
1888 err = msg_len; 1887 err = msg_len;
1889 1888
1890 err: 1889 err:
1891 return err; 1890 return err;
1892 } 1891 }
1893 1892
1894 static union sctp_addr *sctp_sendmsg_get_dadd 1893 static union sctp_addr *sctp_sendmsg_get_daddr(struct sock *sk,
1895 1894 const struct msghdr *msg,
1896 1895 struct sctp_cmsgs *cmsgs)
1897 { 1896 {
1898 union sctp_addr *daddr = NULL; 1897 union sctp_addr *daddr = NULL;
1899 int err; 1898 int err;
1900 1899
1901 if (!sctp_style(sk, UDP_HIGH_BANDWIDT 1900 if (!sctp_style(sk, UDP_HIGH_BANDWIDTH) && msg->msg_name) {
1902 int len = msg->msg_namelen; 1901 int len = msg->msg_namelen;
1903 1902
1904 if (len > sizeof(*daddr)) 1903 if (len > sizeof(*daddr))
1905 len = sizeof(*daddr); 1904 len = sizeof(*daddr);
1906 1905
1907 daddr = (union sctp_addr *)ms 1906 daddr = (union sctp_addr *)msg->msg_name;
1908 1907
1909 err = sctp_verify_addr(sk, da 1908 err = sctp_verify_addr(sk, daddr, len);
1910 if (err) 1909 if (err)
1911 return ERR_PTR(err); 1910 return ERR_PTR(err);
1912 } 1911 }
1913 1912
1914 return daddr; 1913 return daddr;
1915 } 1914 }
1916 1915
1917 static void sctp_sendmsg_update_sinfo(struct 1916 static void sctp_sendmsg_update_sinfo(struct sctp_association *asoc,
1918 struct 1917 struct sctp_sndrcvinfo *sinfo,
1919 struct 1918 struct sctp_cmsgs *cmsgs)
1920 { 1919 {
1921 if (!cmsgs->srinfo && !cmsgs->sinfo) 1920 if (!cmsgs->srinfo && !cmsgs->sinfo) {
1922 sinfo->sinfo_stream = asoc->d 1921 sinfo->sinfo_stream = asoc->default_stream;
1923 sinfo->sinfo_ppid = asoc->def 1922 sinfo->sinfo_ppid = asoc->default_ppid;
1924 sinfo->sinfo_context = asoc-> 1923 sinfo->sinfo_context = asoc->default_context;
1925 sinfo->sinfo_assoc_id = sctp_ 1924 sinfo->sinfo_assoc_id = sctp_assoc2id(asoc);
1926 1925
1927 if (!cmsgs->prinfo) 1926 if (!cmsgs->prinfo)
1928 sinfo->sinfo_flags = 1927 sinfo->sinfo_flags = asoc->default_flags;
1929 } 1928 }
1930 1929
1931 if (!cmsgs->srinfo && !cmsgs->prinfo) 1930 if (!cmsgs->srinfo && !cmsgs->prinfo)
1932 sinfo->sinfo_timetolive = aso 1931 sinfo->sinfo_timetolive = asoc->default_timetolive;
1933 1932
1934 if (cmsgs->authinfo) { 1933 if (cmsgs->authinfo) {
1935 /* Reuse sinfo_tsn to indicat 1934 /* Reuse sinfo_tsn to indicate that authinfo was set and
1936 * sinfo_ssn to save the keyi 1935 * sinfo_ssn to save the keyid on tx path.
1937 */ 1936 */
1938 sinfo->sinfo_tsn = 1; 1937 sinfo->sinfo_tsn = 1;
1939 sinfo->sinfo_ssn = cmsgs->aut 1938 sinfo->sinfo_ssn = cmsgs->authinfo->auth_keynumber;
1940 } 1939 }
1941 } 1940 }
1942 1941
1943 static int sctp_sendmsg(struct sock *sk, stru 1942 static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
1944 { 1943 {
1945 struct sctp_endpoint *ep = sctp_sk(sk 1944 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
1946 struct sctp_transport *transport = NU 1945 struct sctp_transport *transport = NULL;
1947 struct sctp_sndrcvinfo _sinfo, *sinfo 1946 struct sctp_sndrcvinfo _sinfo, *sinfo;
1948 struct sctp_association *asoc, *tmp; 1947 struct sctp_association *asoc, *tmp;
1949 struct sctp_cmsgs cmsgs; 1948 struct sctp_cmsgs cmsgs;
1950 union sctp_addr *daddr; 1949 union sctp_addr *daddr;
1951 bool new = false; 1950 bool new = false;
1952 __u16 sflags; 1951 __u16 sflags;
1953 int err; 1952 int err;
1954 1953
1955 /* Parse and get snd_info */ 1954 /* Parse and get snd_info */
1956 err = sctp_sendmsg_parse(sk, &cmsgs, 1955 err = sctp_sendmsg_parse(sk, &cmsgs, &_sinfo, msg, msg_len);
1957 if (err) 1956 if (err)
1958 goto out; 1957 goto out;
1959 1958
1960 sinfo = &_sinfo; 1959 sinfo = &_sinfo;
1961 sflags = sinfo->sinfo_flags; 1960 sflags = sinfo->sinfo_flags;
1962 1961
1963 /* Get daddr from msg */ 1962 /* Get daddr from msg */
1964 daddr = sctp_sendmsg_get_daddr(sk, ms 1963 daddr = sctp_sendmsg_get_daddr(sk, msg, &cmsgs);
1965 if (IS_ERR(daddr)) { 1964 if (IS_ERR(daddr)) {
1966 err = PTR_ERR(daddr); 1965 err = PTR_ERR(daddr);
1967 goto out; 1966 goto out;
1968 } 1967 }
1969 1968
1970 lock_sock(sk); 1969 lock_sock(sk);
1971 1970
1972 /* SCTP_SENDALL process */ 1971 /* SCTP_SENDALL process */
1973 if ((sflags & SCTP_SENDALL) && sctp_s 1972 if ((sflags & SCTP_SENDALL) && sctp_style(sk, UDP)) {
1974 list_for_each_entry_safe(asoc 1973 list_for_each_entry_safe(asoc, tmp, &ep->asocs, asocs) {
1975 err = sctp_sendmsg_ch 1974 err = sctp_sendmsg_check_sflags(asoc, sflags, msg,
1976 1975 msg_len);
1977 if (err == 0) 1976 if (err == 0)
1978 continue; 1977 continue;
1979 if (err < 0) 1978 if (err < 0)
1980 goto out_unlo 1979 goto out_unlock;
1981 1980
1982 sctp_sendmsg_update_s 1981 sctp_sendmsg_update_sinfo(asoc, sinfo, &cmsgs);
1983 1982
1984 err = sctp_sendmsg_to 1983 err = sctp_sendmsg_to_asoc(asoc, msg, msg_len,
1985 1984 NULL, sinfo);
1986 if (err < 0) 1985 if (err < 0)
1987 goto out_unlo 1986 goto out_unlock;
1988 1987
1989 iov_iter_revert(&msg- 1988 iov_iter_revert(&msg->msg_iter, err);
1990 } 1989 }
1991 1990
1992 goto out_unlock; 1991 goto out_unlock;
1993 } 1992 }
1994 1993
1995 /* Get and check or create asoc */ 1994 /* Get and check or create asoc */
1996 if (daddr) { 1995 if (daddr) {
1997 asoc = sctp_endpoint_lookup_a 1996 asoc = sctp_endpoint_lookup_assoc(ep, daddr, &transport);
1998 if (asoc) { 1997 if (asoc) {
1999 err = sctp_sendmsg_ch 1998 err = sctp_sendmsg_check_sflags(asoc, sflags, msg,
2000 1999 msg_len);
2001 if (err <= 0) 2000 if (err <= 0)
2002 goto out_unlo 2001 goto out_unlock;
2003 } else { 2002 } else {
2004 err = sctp_sendmsg_ne 2003 err = sctp_sendmsg_new_asoc(sk, sflags, &cmsgs, daddr,
2005 2004 &transport);
2006 if (err) 2005 if (err)
2007 goto out_unlo 2006 goto out_unlock;
2008 2007
2009 asoc = transport->aso 2008 asoc = transport->asoc;
2010 new = true; 2009 new = true;
2011 } 2010 }
2012 2011
2013 if (!sctp_style(sk, TCP) && ! 2012 if (!sctp_style(sk, TCP) && !(sflags & SCTP_ADDR_OVER))
2014 transport = NULL; 2013 transport = NULL;
2015 } else { 2014 } else {
2016 asoc = sctp_id2assoc(sk, sinf 2015 asoc = sctp_id2assoc(sk, sinfo->sinfo_assoc_id);
2017 if (!asoc) { 2016 if (!asoc) {
2018 err = -EPIPE; 2017 err = -EPIPE;
2019 goto out_unlock; 2018 goto out_unlock;
2020 } 2019 }
2021 2020
2022 err = sctp_sendmsg_check_sfla 2021 err = sctp_sendmsg_check_sflags(asoc, sflags, msg, msg_len);
2023 if (err <= 0) 2022 if (err <= 0)
2024 goto out_unlock; 2023 goto out_unlock;
2025 } 2024 }
2026 2025
2027 /* Update snd_info with the asoc */ 2026 /* Update snd_info with the asoc */
2028 sctp_sendmsg_update_sinfo(asoc, sinfo 2027 sctp_sendmsg_update_sinfo(asoc, sinfo, &cmsgs);
2029 2028
2030 /* Send msg to the asoc */ 2029 /* Send msg to the asoc */
2031 err = sctp_sendmsg_to_asoc(asoc, msg, 2030 err = sctp_sendmsg_to_asoc(asoc, msg, msg_len, transport, sinfo);
2032 if (err < 0 && err != -ESRCH && new) 2031 if (err < 0 && err != -ESRCH && new)
2033 sctp_association_free(asoc); 2032 sctp_association_free(asoc);
2034 2033
2035 out_unlock: 2034 out_unlock:
2036 release_sock(sk); 2035 release_sock(sk);
2037 out: 2036 out:
2038 return sctp_error(sk, msg->msg_flags, 2037 return sctp_error(sk, msg->msg_flags, err);
2039 } 2038 }
2040 2039
2041 /* This is an extended version of skb_pull() 2040 /* This is an extended version of skb_pull() that removes the data from the
2042 * start of a skb even when data is spread ac 2041 * start of a skb even when data is spread across the list of skb's in the
2043 * frag_list. len specifies the total amount 2042 * frag_list. len specifies the total amount of data that needs to be removed.
2044 * when 'len' bytes could be removed from the 2043 * when 'len' bytes could be removed from the skb, it returns 0.
2045 * If 'len' exceeds the total skb length, it 2044 * If 'len' exceeds the total skb length, it returns the no. of bytes that
2046 * could not be removed. 2045 * could not be removed.
2047 */ 2046 */
2048 static int sctp_skb_pull(struct sk_buff *skb, 2047 static int sctp_skb_pull(struct sk_buff *skb, int len)
2049 { 2048 {
2050 struct sk_buff *list; 2049 struct sk_buff *list;
2051 int skb_len = skb_headlen(skb); 2050 int skb_len = skb_headlen(skb);
2052 int rlen; 2051 int rlen;
2053 2052
2054 if (len <= skb_len) { 2053 if (len <= skb_len) {
2055 __skb_pull(skb, len); 2054 __skb_pull(skb, len);
2056 return 0; 2055 return 0;
2057 } 2056 }
2058 len -= skb_len; 2057 len -= skb_len;
2059 __skb_pull(skb, skb_len); 2058 __skb_pull(skb, skb_len);
2060 2059
2061 skb_walk_frags(skb, list) { 2060 skb_walk_frags(skb, list) {
2062 rlen = sctp_skb_pull(list, le 2061 rlen = sctp_skb_pull(list, len);
2063 skb->len -= (len-rlen); 2062 skb->len -= (len-rlen);
2064 skb->data_len -= (len-rlen); 2063 skb->data_len -= (len-rlen);
2065 2064
2066 if (!rlen) 2065 if (!rlen)
2067 return 0; 2066 return 0;
2068 2067
2069 len = rlen; 2068 len = rlen;
2070 } 2069 }
2071 2070
2072 return len; 2071 return len;
2073 } 2072 }
2074 2073
2075 /* API 3.1.3 recvmsg() - UDP Style Syntax 2074 /* API 3.1.3 recvmsg() - UDP Style Syntax
2076 * 2075 *
2077 * ssize_t recvmsg(int socket, struct msghdr 2076 * ssize_t recvmsg(int socket, struct msghdr *message,
2078 * int flags); 2077 * int flags);
2079 * 2078 *
2080 * socket - the socket descriptor of the en 2079 * socket - the socket descriptor of the endpoint.
2081 * message - pointer to the msghdr structure 2080 * message - pointer to the msghdr structure which contains a single
2082 * user message and possibly some 2081 * user message and possibly some ancillary data.
2083 * 2082 *
2084 * See Section 5 for complete desc 2083 * See Section 5 for complete description of the data
2085 * structures. 2084 * structures.
2086 * 2085 *
2087 * flags - flags sent or received with the 2086 * flags - flags sent or received with the user message, see Section
2088 * 5 for complete description of t 2087 * 5 for complete description of the flags.
2089 */ 2088 */
2090 static int sctp_recvmsg(struct sock *sk, stru 2089 static int sctp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
2091 int flags, int *addr_ 2090 int flags, int *addr_len)
2092 { 2091 {
2093 struct sctp_ulpevent *event = NULL; 2092 struct sctp_ulpevent *event = NULL;
2094 struct sctp_sock *sp = sctp_sk(sk); 2093 struct sctp_sock *sp = sctp_sk(sk);
2095 struct sk_buff *skb, *head_skb; 2094 struct sk_buff *skb, *head_skb;
2096 int copied; 2095 int copied;
2097 int err = 0; 2096 int err = 0;
2098 int skb_len; 2097 int skb_len;
2099 2098
2100 pr_debug("%s: sk:%p, msghdr:%p, len:% 2099 pr_debug("%s: sk:%p, msghdr:%p, len:%zd, flags:0x%x, addr_len:%p)\n",
2101 __func__, sk, msg, len, flag 2100 __func__, sk, msg, len, flags, addr_len);
2102 2101
2103 if (unlikely(flags & MSG_ERRQUEUE)) 2102 if (unlikely(flags & MSG_ERRQUEUE))
2104 return inet_recv_error(sk, ms 2103 return inet_recv_error(sk, msg, len, addr_len);
2105 2104
2106 if (sk_can_busy_loop(sk) && 2105 if (sk_can_busy_loop(sk) &&
2107 skb_queue_empty_lockless(&sk->sk_ 2106 skb_queue_empty_lockless(&sk->sk_receive_queue))
2108 sk_busy_loop(sk, flags & MSG_ 2107 sk_busy_loop(sk, flags & MSG_DONTWAIT);
2109 2108
2110 lock_sock(sk); 2109 lock_sock(sk);
2111 2110
2112 if (sctp_style(sk, TCP) && !sctp_ssta 2111 if (sctp_style(sk, TCP) && !sctp_sstate(sk, ESTABLISHED) &&
2113 !sctp_sstate(sk, CLOSING) && !sct 2112 !sctp_sstate(sk, CLOSING) && !sctp_sstate(sk, CLOSED)) {
2114 err = -ENOTCONN; 2113 err = -ENOTCONN;
2115 goto out; 2114 goto out;
2116 } 2115 }
2117 2116
2118 skb = sctp_skb_recv_datagram(sk, flag 2117 skb = sctp_skb_recv_datagram(sk, flags, &err);
2119 if (!skb) 2118 if (!skb)
2120 goto out; 2119 goto out;
2121 2120
2122 /* Get the total length of the skb in 2121 /* Get the total length of the skb including any skb's in the
2123 * frag_list. 2122 * frag_list.
2124 */ 2123 */
2125 skb_len = skb->len; 2124 skb_len = skb->len;
2126 2125
2127 copied = skb_len; 2126 copied = skb_len;
2128 if (copied > len) 2127 if (copied > len)
2129 copied = len; 2128 copied = len;
2130 2129
2131 err = skb_copy_datagram_msg(skb, 0, m 2130 err = skb_copy_datagram_msg(skb, 0, msg, copied);
2132 2131
2133 event = sctp_skb2event(skb); 2132 event = sctp_skb2event(skb);
2134 2133
2135 if (err) 2134 if (err)
2136 goto out_free; 2135 goto out_free;
2137 2136
2138 if (event->chunk && event->chunk->hea 2137 if (event->chunk && event->chunk->head_skb)
2139 head_skb = event->chunk->head 2138 head_skb = event->chunk->head_skb;
2140 else 2139 else
2141 head_skb = skb; 2140 head_skb = skb;
2142 sock_recv_cmsgs(msg, sk, head_skb); 2141 sock_recv_cmsgs(msg, sk, head_skb);
2143 if (sctp_ulpevent_is_notification(eve 2142 if (sctp_ulpevent_is_notification(event)) {
2144 msg->msg_flags |= MSG_NOTIFIC 2143 msg->msg_flags |= MSG_NOTIFICATION;
2145 sp->pf->event_msgname(event, 2144 sp->pf->event_msgname(event, msg->msg_name, addr_len);
2146 } else { 2145 } else {
2147 sp->pf->skb_msgname(head_skb, 2146 sp->pf->skb_msgname(head_skb, msg->msg_name, addr_len);
2148 } 2147 }
2149 2148
2150 /* Check if we allow SCTP_NXTINFO. */ 2149 /* Check if we allow SCTP_NXTINFO. */
2151 if (sp->recvnxtinfo) 2150 if (sp->recvnxtinfo)
2152 sctp_ulpevent_read_nxtinfo(ev 2151 sctp_ulpevent_read_nxtinfo(event, msg, sk);
2153 /* Check if we allow SCTP_RCVINFO. */ 2152 /* Check if we allow SCTP_RCVINFO. */
2154 if (sp->recvrcvinfo) 2153 if (sp->recvrcvinfo)
2155 sctp_ulpevent_read_rcvinfo(ev 2154 sctp_ulpevent_read_rcvinfo(event, msg);
2156 /* Check if we allow SCTP_SNDRCVINFO. 2155 /* Check if we allow SCTP_SNDRCVINFO. */
2157 if (sctp_ulpevent_type_enabled(sp->su 2156 if (sctp_ulpevent_type_enabled(sp->subscribe, SCTP_DATA_IO_EVENT))
2158 sctp_ulpevent_read_sndrcvinfo 2157 sctp_ulpevent_read_sndrcvinfo(event, msg);
2159 2158
2160 err = copied; 2159 err = copied;
2161 2160
2162 /* If skb's length exceeds the user's 2161 /* If skb's length exceeds the user's buffer, update the skb and
2163 * push it back to the receive_queue 2162 * push it back to the receive_queue so that the next call to
2164 * recvmsg() will return the remainin 2163 * recvmsg() will return the remaining data. Don't set MSG_EOR.
2165 */ 2164 */
2166 if (skb_len > copied) { 2165 if (skb_len > copied) {
2167 msg->msg_flags &= ~MSG_EOR; 2166 msg->msg_flags &= ~MSG_EOR;
2168 if (flags & MSG_PEEK) 2167 if (flags & MSG_PEEK)
2169 goto out_free; 2168 goto out_free;
2170 sctp_skb_pull(skb, copied); 2169 sctp_skb_pull(skb, copied);
2171 skb_queue_head(&sk->sk_receiv 2170 skb_queue_head(&sk->sk_receive_queue, skb);
2172 2171
2173 /* When only partial message 2172 /* When only partial message is copied to the user, increase
2174 * rwnd by that amount. If al 2173 * rwnd by that amount. If all the data in the skb is read,
2175 * rwnd is updated when the e 2174 * rwnd is updated when the event is freed.
2176 */ 2175 */
2177 if (!sctp_ulpevent_is_notific 2176 if (!sctp_ulpevent_is_notification(event))
2178 sctp_assoc_rwnd_incre 2177 sctp_assoc_rwnd_increase(event->asoc, copied);
2179 goto out; 2178 goto out;
2180 } else if ((event->msg_flags & MSG_NO 2179 } else if ((event->msg_flags & MSG_NOTIFICATION) ||
2181 (event->msg_flags & MSG_EO 2180 (event->msg_flags & MSG_EOR))
2182 msg->msg_flags |= MSG_EOR; 2181 msg->msg_flags |= MSG_EOR;
2183 else 2182 else
2184 msg->msg_flags &= ~MSG_EOR; 2183 msg->msg_flags &= ~MSG_EOR;
2185 2184
2186 out_free: 2185 out_free:
2187 if (flags & MSG_PEEK) { 2186 if (flags & MSG_PEEK) {
2188 /* Release the skb reference 2187 /* Release the skb reference acquired after peeking the skb in
2189 * sctp_skb_recv_datagram(). 2188 * sctp_skb_recv_datagram().
2190 */ 2189 */
2191 kfree_skb(skb); 2190 kfree_skb(skb);
2192 } else { 2191 } else {
2193 /* Free the event which inclu 2192 /* Free the event which includes releasing the reference to
2194 * the owner of the skb, free 2193 * the owner of the skb, freeing the skb and updating the
2195 * rwnd. 2194 * rwnd.
2196 */ 2195 */
2197 sctp_ulpevent_free(event); 2196 sctp_ulpevent_free(event);
2198 } 2197 }
2199 out: 2198 out:
2200 release_sock(sk); 2199 release_sock(sk);
2201 return err; 2200 return err;
2202 } 2201 }
2203 2202
2204 /* 7.1.12 Enable/Disable message fragmentatio 2203 /* 7.1.12 Enable/Disable message fragmentation (SCTP_DISABLE_FRAGMENTS)
2205 * 2204 *
2206 * This option is a on/off flag. If enabled 2205 * This option is a on/off flag. If enabled no SCTP message
2207 * fragmentation will be performed. Instead 2206 * fragmentation will be performed. Instead if a message being sent
2208 * exceeds the current PMTU size, the message 2207 * exceeds the current PMTU size, the message will NOT be sent and
2209 * instead a error will be indicated to the u 2208 * instead a error will be indicated to the user.
2210 */ 2209 */
2211 static int sctp_setsockopt_disable_fragments( 2210 static int sctp_setsockopt_disable_fragments(struct sock *sk, int *val,
2212 2211 unsigned int optlen)
2213 { 2212 {
2214 if (optlen < sizeof(int)) 2213 if (optlen < sizeof(int))
2215 return -EINVAL; 2214 return -EINVAL;
2216 sctp_sk(sk)->disable_fragments = (*va 2215 sctp_sk(sk)->disable_fragments = (*val == 0) ? 0 : 1;
2217 return 0; 2216 return 0;
2218 } 2217 }
2219 2218
2220 static int sctp_setsockopt_events(struct sock 2219 static int sctp_setsockopt_events(struct sock *sk, __u8 *sn_type,
2221 unsigned in 2220 unsigned int optlen)
2222 { 2221 {
2223 struct sctp_sock *sp = sctp_sk(sk); 2222 struct sctp_sock *sp = sctp_sk(sk);
2224 struct sctp_association *asoc; 2223 struct sctp_association *asoc;
2225 int i; 2224 int i;
2226 2225
2227 if (optlen > sizeof(struct sctp_event 2226 if (optlen > sizeof(struct sctp_event_subscribe))
2228 return -EINVAL; 2227 return -EINVAL;
2229 2228
2230 for (i = 0; i < optlen; i++) 2229 for (i = 0; i < optlen; i++)
2231 sctp_ulpevent_type_set(&sp->s 2230 sctp_ulpevent_type_set(&sp->subscribe, SCTP_SN_TYPE_BASE + i,
2232 sn_typ 2231 sn_type[i]);
2233 2232
2234 list_for_each_entry(asoc, &sp->ep->as 2233 list_for_each_entry(asoc, &sp->ep->asocs, asocs)
2235 asoc->subscribe = sctp_sk(sk) 2234 asoc->subscribe = sctp_sk(sk)->subscribe;
2236 2235
2237 /* At the time when a user app subscr 2236 /* At the time when a user app subscribes to SCTP_SENDER_DRY_EVENT,
2238 * if there is no data to be sent or 2237 * if there is no data to be sent or retransmit, the stack will
2239 * immediately send up this notificat 2238 * immediately send up this notification.
2240 */ 2239 */
2241 if (sctp_ulpevent_type_enabled(sp->su 2240 if (sctp_ulpevent_type_enabled(sp->subscribe, SCTP_SENDER_DRY_EVENT)) {
2242 struct sctp_ulpevent *event; 2241 struct sctp_ulpevent *event;
2243 2242
2244 asoc = sctp_id2assoc(sk, 0); 2243 asoc = sctp_id2assoc(sk, 0);
2245 if (asoc && sctp_outq_is_empt 2244 if (asoc && sctp_outq_is_empty(&asoc->outqueue)) {
2246 event = sctp_ulpevent 2245 event = sctp_ulpevent_make_sender_dry_event(asoc,
2247 GFP_U 2246 GFP_USER | __GFP_NOWARN);
2248 if (!event) 2247 if (!event)
2249 return -ENOME 2248 return -ENOMEM;
2250 2249
2251 asoc->stream.si->enqu 2250 asoc->stream.si->enqueue_event(&asoc->ulpq, event);
2252 } 2251 }
2253 } 2252 }
2254 2253
2255 return 0; 2254 return 0;
2256 } 2255 }
2257 2256
2258 /* 7.1.8 Automatic Close of associations (SCT 2257 /* 7.1.8 Automatic Close of associations (SCTP_AUTOCLOSE)
2259 * 2258 *
2260 * This socket option is applicable to the UD 2259 * This socket option is applicable to the UDP-style socket only. When
2261 * set it will cause associations that are id 2260 * set it will cause associations that are idle for more than the
2262 * specified number of seconds to automatical 2261 * specified number of seconds to automatically close. An association
2263 * being idle is defined an association that 2262 * being idle is defined an association that has NOT sent or received
2264 * user data. The special value of '' indica 2263 * user data. The special value of '' indicates that no automatic
2265 * close of any associations should be perfor 2264 * close of any associations should be performed. The option expects an
2266 * integer defining the number of seconds of 2265 * integer defining the number of seconds of idle time before an
2267 * association is closed. 2266 * association is closed.
2268 */ 2267 */
2269 static int sctp_setsockopt_autoclose(struct s 2268 static int sctp_setsockopt_autoclose(struct sock *sk, u32 *optval,
2270 unsigned 2269 unsigned int optlen)
2271 { 2270 {
2272 struct sctp_sock *sp = sctp_sk(sk); 2271 struct sctp_sock *sp = sctp_sk(sk);
2273 struct net *net = sock_net(sk); 2272 struct net *net = sock_net(sk);
2274 2273
2275 /* Applicable to UDP-style socket onl 2274 /* Applicable to UDP-style socket only */
2276 if (sctp_style(sk, TCP)) 2275 if (sctp_style(sk, TCP))
2277 return -EOPNOTSUPP; 2276 return -EOPNOTSUPP;
2278 if (optlen != sizeof(int)) 2277 if (optlen != sizeof(int))
2279 return -EINVAL; 2278 return -EINVAL;
2280 2279
2281 sp->autoclose = *optval; 2280 sp->autoclose = *optval;
2282 if (sp->autoclose > net->sctp.max_aut 2281 if (sp->autoclose > net->sctp.max_autoclose)
2283 sp->autoclose = net->sctp.max 2282 sp->autoclose = net->sctp.max_autoclose;
2284 2283
2285 return 0; 2284 return 0;
2286 } 2285 }
2287 2286
2288 /* 7.1.13 Peer Address Parameters (SCTP_PEER_ 2287 /* 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS)
2289 * 2288 *
2290 * Applications can enable or disable heartbe 2289 * Applications can enable or disable heartbeats for any peer address of
2291 * an association, modify an address's heartb 2290 * an association, modify an address's heartbeat interval, force a
2292 * heartbeat to be sent immediately, and adju 2291 * heartbeat to be sent immediately, and adjust the address's maximum
2293 * number of retransmissions sent before an a 2292 * number of retransmissions sent before an address is considered
2294 * unreachable. The following structure is u 2293 * unreachable. The following structure is used to access and modify an
2295 * address's parameters: 2294 * address's parameters:
2296 * 2295 *
2297 * struct sctp_paddrparams { 2296 * struct sctp_paddrparams {
2298 * sctp_assoc_t spp_assoc_id; 2297 * sctp_assoc_t spp_assoc_id;
2299 * struct sockaddr_storage spp_address; 2298 * struct sockaddr_storage spp_address;
2300 * uint32_t spp_hbinterval 2299 * uint32_t spp_hbinterval;
2301 * uint16_t spp_pathmaxrxt 2300 * uint16_t spp_pathmaxrxt;
2302 * uint32_t spp_pathmtu; 2301 * uint32_t spp_pathmtu;
2303 * uint32_t spp_sackdelay; 2302 * uint32_t spp_sackdelay;
2304 * uint32_t spp_flags; 2303 * uint32_t spp_flags;
2305 * uint32_t spp_ipv6_flowl 2304 * uint32_t spp_ipv6_flowlabel;
2306 * uint8_t spp_dscp; 2305 * uint8_t spp_dscp;
2307 * }; 2306 * };
2308 * 2307 *
2309 * spp_assoc_id - (one-to-many style soc 2308 * spp_assoc_id - (one-to-many style socket) This is filled in the
2310 * application, and ident 2309 * application, and identifies the association for
2311 * this query. 2310 * this query.
2312 * spp_address - This specifies which a 2311 * spp_address - This specifies which address is of interest.
2313 * spp_hbinterval - This contains the valu 2312 * spp_hbinterval - This contains the value of the heartbeat interval,
2314 * in milliseconds. If a 2313 * in milliseconds. If a value of zero
2315 * is present in this fie 2314 * is present in this field then no changes are to
2316 * be made to this parame 2315 * be made to this parameter.
2317 * spp_pathmaxrxt - This contains the maxi 2316 * spp_pathmaxrxt - This contains the maximum number of
2318 * retransmissions before 2317 * retransmissions before this address shall be
2319 * considered unreachable 2318 * considered unreachable. If a value of zero
2320 * is present in this fie 2319 * is present in this field then no changes are to
2321 * be made to this parame 2320 * be made to this parameter.
2322 * spp_pathmtu - When Path MTU discover 2321 * spp_pathmtu - When Path MTU discovery is disabled the value
2323 * specified here will be 2322 * specified here will be the "fixed" path mtu.
2324 * Note that if the spp_a 2323 * Note that if the spp_address field is empty
2325 * then all associations 2324 * then all associations on this address will
2326 * have this fixed path m 2325 * have this fixed path mtu set upon them.
2327 * 2326 *
2328 * spp_sackdelay - When delayed sack is e 2327 * spp_sackdelay - When delayed sack is enabled, this value specifies
2329 * the number of millisec 2328 * the number of milliseconds that sacks will be delayed
2330 * for. This value will a 2329 * for. This value will apply to all addresses of an
2331 * association if the spp 2330 * association if the spp_address field is empty. Note
2332 * also, that if delayed 2331 * also, that if delayed sack is enabled and this
2333 * value is set to 0, no 2332 * value is set to 0, no change is made to the last
2334 * recorded delayed sack 2333 * recorded delayed sack timer value.
2335 * 2334 *
2336 * spp_flags - These flags are used t 2335 * spp_flags - These flags are used to control various features
2337 * on an association. The 2336 * on an association. The flag field may contain
2338 * zero or more of the fo 2337 * zero or more of the following options.
2339 * 2338 *
2340 * SPP_HB_ENABLE - Enabl 2339 * SPP_HB_ENABLE - Enable heartbeats on the
2341 * specified address. Not 2340 * specified address. Note that if the address
2342 * field is empty all add 2341 * field is empty all addresses for the association
2343 * have heartbeats enable 2342 * have heartbeats enabled upon them.
2344 * 2343 *
2345 * SPP_HB_DISABLE - Disab 2344 * SPP_HB_DISABLE - Disable heartbeats on the
2346 * speicifed address. Not 2345 * speicifed address. Note that if the address
2347 * field is empty all add 2346 * field is empty all addresses for the association
2348 * will have their heartb 2347 * will have their heartbeats disabled. Note also
2349 * that SPP_HB_ENABLE and 2348 * that SPP_HB_ENABLE and SPP_HB_DISABLE are
2350 * mutually exclusive, on 2349 * mutually exclusive, only one of these two should
2351 * be specified. Enabling 2350 * be specified. Enabling both fields will have
2352 * undetermined results. 2351 * undetermined results.
2353 * 2352 *
2354 * SPP_HB_DEMAND - Reques 2353 * SPP_HB_DEMAND - Request a user initiated heartbeat
2355 * to be made immediately 2354 * to be made immediately.
2356 * 2355 *
2357 * SPP_HB_TIME_IS_ZERO - 2356 * SPP_HB_TIME_IS_ZERO - Specify's that the time for
2358 * heartbeat delayis to b 2357 * heartbeat delayis to be set to the value of 0
2359 * milliseconds. 2358 * milliseconds.
2360 * 2359 *
2361 * SPP_PMTUD_ENABLE - Thi 2360 * SPP_PMTUD_ENABLE - This field will enable PMTU
2362 * discovery upon the spe 2361 * discovery upon the specified address. Note that
2363 * if the address feild i 2362 * if the address feild is empty then all addresses
2364 * on the association are 2363 * on the association are effected.
2365 * 2364 *
2366 * SPP_PMTUD_DISABLE - Th 2365 * SPP_PMTUD_DISABLE - This field will disable PMTU
2367 * discovery upon the spe 2366 * discovery upon the specified address. Note that
2368 * if the address feild i 2367 * if the address feild is empty then all addresses
2369 * on the association are 2368 * on the association are effected. Not also that
2370 * SPP_PMTUD_ENABLE and S 2369 * SPP_PMTUD_ENABLE and SPP_PMTUD_DISABLE are mutually
2371 * exclusive. Enabling bo 2370 * exclusive. Enabling both will have undetermined
2372 * results. 2371 * results.
2373 * 2372 *
2374 * SPP_SACKDELAY_ENABLE - 2373 * SPP_SACKDELAY_ENABLE - Setting this flag turns
2375 * on delayed sack. The t 2374 * on delayed sack. The time specified in spp_sackdelay
2376 * is used to specify the 2375 * is used to specify the sack delay for this address. Note
2377 * that if spp_address is 2376 * that if spp_address is empty then all addresses will
2378 * enable delayed sack an 2377 * enable delayed sack and take on the sack delay
2379 * value specified in spp 2378 * value specified in spp_sackdelay.
2380 * SPP_SACKDELAY_DISABLE 2379 * SPP_SACKDELAY_DISABLE - Setting this flag turns
2381 * off delayed sack. If t 2380 * off delayed sack. If the spp_address field is blank then
2382 * delayed sack is disabl 2381 * delayed sack is disabled for the entire association. Note
2383 * also that this field i 2382 * also that this field is mutually exclusive to
2384 * SPP_SACKDELAY_ENABLE, 2383 * SPP_SACKDELAY_ENABLE, setting both will have undefined
2385 * results. 2384 * results.
2386 * 2385 *
2387 * SPP_IPV6_FLOWLABEL: S 2386 * SPP_IPV6_FLOWLABEL: Setting this flag enables the
2388 * setting of the IPV6 fl 2387 * setting of the IPV6 flow label value. The value is
2389 * contained in the spp_i 2388 * contained in the spp_ipv6_flowlabel field.
2390 * Upon retrieval, this f 2389 * Upon retrieval, this flag will be set to indicate that
2391 * the spp_ipv6_flowlabel 2390 * the spp_ipv6_flowlabel field has a valid value returned.
2392 * If a specific destinat 2391 * If a specific destination address is set (in the
2393 * spp_address field), th 2392 * spp_address field), then the value returned is that of
2394 * the address. If just 2393 * the address. If just an association is specified (and
2395 * no address), then the 2394 * no address), then the association's default flow label
2396 * is returned. If neith 2395 * is returned. If neither an association nor a destination
2397 * is specified, then the 2396 * is specified, then the socket's default flow label is
2398 * returned. For non-IPv 2397 * returned. For non-IPv6 sockets, this flag will be left
2399 * cleared. 2398 * cleared.
2400 * 2399 *
2401 * SPP_DSCP: Setting thi 2400 * SPP_DSCP: Setting this flag enables the setting of the
2402 * Differentiated Service 2401 * Differentiated Services Code Point (DSCP) value
2403 * associated with either 2402 * associated with either the association or a specific
2404 * address. The value is 2403 * address. The value is obtained in the spp_dscp field.
2405 * Upon retrieval, this f 2404 * Upon retrieval, this flag will be set to indicate that
2406 * the spp_dscp field has 2405 * the spp_dscp field has a valid value returned. If a
2407 * specific destination a 2406 * specific destination address is set when called (in the
2408 * spp_address field), th 2407 * spp_address field), then that specific destination
2409 * address's DSCP value i 2408 * address's DSCP value is returned. If just an association
2410 * is specified, then the 2409 * is specified, then the association's default DSCP is
2411 * returned. If neither 2410 * returned. If neither an association nor a destination is
2412 * specified, then the so 2411 * specified, then the socket's default DSCP is returned.
2413 * 2412 *
2414 * spp_ipv6_flowlabel 2413 * spp_ipv6_flowlabel
2415 * - This field is used in 2414 * - This field is used in conjunction with the
2416 * SPP_IPV6_FLOWLABEL fla 2415 * SPP_IPV6_FLOWLABEL flag and contains the IPv6 flow label.
2417 * The 20 least significa 2416 * The 20 least significant bits are used for the flow
2418 * label. This setting h 2417 * label. This setting has precedence over any IPv6-layer
2419 * setting. 2418 * setting.
2420 * 2419 *
2421 * spp_dscp - This field is used in 2420 * spp_dscp - This field is used in conjunction with the SPP_DSCP flag
2422 * and contains the DSCP. 2421 * and contains the DSCP. The 6 most significant bits are
2423 * used for the DSCP. Th 2422 * used for the DSCP. This setting has precedence over any
2424 * IPv4- or IPv6- layer s 2423 * IPv4- or IPv6- layer setting.
2425 */ 2424 */
2426 static int sctp_apply_peer_addr_params(struct 2425 static int sctp_apply_peer_addr_params(struct sctp_paddrparams *params,
2427 struct 2426 struct sctp_transport *trans,
2428 struct 2427 struct sctp_association *asoc,
2429 struct 2428 struct sctp_sock *sp,
2430 int 2429 int hb_change,
2431 int 2430 int pmtud_change,
2432 int 2431 int sackdelay_change)
2433 { 2432 {
2434 int error; 2433 int error;
2435 2434
2436 if (params->spp_flags & SPP_HB_DEMAND 2435 if (params->spp_flags & SPP_HB_DEMAND && trans) {
2437 error = sctp_primitive_REQUES 2436 error = sctp_primitive_REQUESTHEARTBEAT(trans->asoc->base.net,
2438 2437 trans->asoc, trans);
2439 if (error) 2438 if (error)
2440 return error; 2439 return error;
2441 } 2440 }
2442 2441
2443 /* Note that unless the spp_flag is s 2442 /* Note that unless the spp_flag is set to SPP_HB_ENABLE the value of
2444 * this field is ignored. Note also 2443 * this field is ignored. Note also that a value of zero indicates
2445 * the current setting should be left 2444 * the current setting should be left unchanged.
2446 */ 2445 */
2447 if (params->spp_flags & SPP_HB_ENABLE 2446 if (params->spp_flags & SPP_HB_ENABLE) {
2448 2447
2449 /* Re-zero the interval if th 2448 /* Re-zero the interval if the SPP_HB_TIME_IS_ZERO is
2450 * set. This lets us use 0 v 2449 * set. This lets us use 0 value when this flag
2451 * is set. 2450 * is set.
2452 */ 2451 */
2453 if (params->spp_flags & SPP_H 2452 if (params->spp_flags & SPP_HB_TIME_IS_ZERO)
2454 params->spp_hbinterva 2453 params->spp_hbinterval = 0;
2455 2454
2456 if (params->spp_hbinterval || 2455 if (params->spp_hbinterval ||
2457 (params->spp_flags & SPP_ 2456 (params->spp_flags & SPP_HB_TIME_IS_ZERO)) {
2458 if (trans) { 2457 if (trans) {
2459 trans->hbinte 2458 trans->hbinterval =
2460 msecs_to_ 2459 msecs_to_jiffies(params->spp_hbinterval);
2461 sctp_transpor 2460 sctp_transport_reset_hb_timer(trans);
2462 } else if (asoc) { 2461 } else if (asoc) {
2463 asoc->hbinter 2462 asoc->hbinterval =
2464 msecs_to_ 2463 msecs_to_jiffies(params->spp_hbinterval);
2465 } else { 2464 } else {
2466 sp->hbinterva 2465 sp->hbinterval = params->spp_hbinterval;
2467 } 2466 }
2468 } 2467 }
2469 } 2468 }
2470 2469
2471 if (hb_change) { 2470 if (hb_change) {
2472 if (trans) { 2471 if (trans) {
2473 trans->param_flags = 2472 trans->param_flags =
2474 (trans->param 2473 (trans->param_flags & ~SPP_HB) | hb_change;
2475 } else if (asoc) { 2474 } else if (asoc) {
2476 asoc->param_flags = 2475 asoc->param_flags =
2477 (asoc->param_ 2476 (asoc->param_flags & ~SPP_HB) | hb_change;
2478 } else { 2477 } else {
2479 sp->param_flags = 2478 sp->param_flags =
2480 (sp->param_fl 2479 (sp->param_flags & ~SPP_HB) | hb_change;
2481 } 2480 }
2482 } 2481 }
2483 2482
2484 /* When Path MTU discovery is disable 2483 /* When Path MTU discovery is disabled the value specified here will
2485 * be the "fixed" path mtu (i.e. the 2484 * be the "fixed" path mtu (i.e. the value of the spp_flags field must
2486 * include the flag SPP_PMTUD_DISABLE 2485 * include the flag SPP_PMTUD_DISABLE for this field to have any
2487 * effect). 2486 * effect).
2488 */ 2487 */
2489 if ((params->spp_flags & SPP_PMTUD_DI 2488 if ((params->spp_flags & SPP_PMTUD_DISABLE) && params->spp_pathmtu) {
2490 if (trans) { 2489 if (trans) {
2491 trans->pathmtu = para 2490 trans->pathmtu = params->spp_pathmtu;
2492 sctp_assoc_sync_pmtu( 2491 sctp_assoc_sync_pmtu(asoc);
2493 } else if (asoc) { 2492 } else if (asoc) {
2494 sctp_assoc_set_pmtu(a 2493 sctp_assoc_set_pmtu(asoc, params->spp_pathmtu);
2495 } else { 2494 } else {
2496 sp->pathmtu = params- 2495 sp->pathmtu = params->spp_pathmtu;
2497 } 2496 }
2498 } 2497 }
2499 2498
2500 if (pmtud_change) { 2499 if (pmtud_change) {
2501 if (trans) { 2500 if (trans) {
2502 int update = (trans-> 2501 int update = (trans->param_flags & SPP_PMTUD_DISABLE) &&
2503 (params->spp_ 2502 (params->spp_flags & SPP_PMTUD_ENABLE);
2504 trans->param_flags = 2503 trans->param_flags =
2505 (trans->param 2504 (trans->param_flags & ~SPP_PMTUD) | pmtud_change;
2506 if (update) { 2505 if (update) {
2507 sctp_transpor 2506 sctp_transport_pmtu(trans, sctp_opt2sk(sp));
2508 sctp_assoc_sy 2507 sctp_assoc_sync_pmtu(asoc);
2509 } 2508 }
2510 sctp_transport_pl_res 2509 sctp_transport_pl_reset(trans);
2511 } else if (asoc) { 2510 } else if (asoc) {
2512 asoc->param_flags = 2511 asoc->param_flags =
2513 (asoc->param_ 2512 (asoc->param_flags & ~SPP_PMTUD) | pmtud_change;
2514 } else { 2513 } else {
2515 sp->param_flags = 2514 sp->param_flags =
2516 (sp->param_fl 2515 (sp->param_flags & ~SPP_PMTUD) | pmtud_change;
2517 } 2516 }
2518 } 2517 }
2519 2518
2520 /* Note that unless the spp_flag is s 2519 /* Note that unless the spp_flag is set to SPP_SACKDELAY_ENABLE the
2521 * value of this field is ignored. N 2520 * value of this field is ignored. Note also that a value of zero
2522 * indicates the current setting shou 2521 * indicates the current setting should be left unchanged.
2523 */ 2522 */
2524 if ((params->spp_flags & SPP_SACKDELA 2523 if ((params->spp_flags & SPP_SACKDELAY_ENABLE) && params->spp_sackdelay) {
2525 if (trans) { 2524 if (trans) {
2526 trans->sackdelay = 2525 trans->sackdelay =
2527 msecs_to_jiff 2526 msecs_to_jiffies(params->spp_sackdelay);
2528 } else if (asoc) { 2527 } else if (asoc) {
2529 asoc->sackdelay = 2528 asoc->sackdelay =
2530 msecs_to_jiff 2529 msecs_to_jiffies(params->spp_sackdelay);
2531 } else { 2530 } else {
2532 sp->sackdelay = param 2531 sp->sackdelay = params->spp_sackdelay;
2533 } 2532 }
2534 } 2533 }
2535 2534
2536 if (sackdelay_change) { 2535 if (sackdelay_change) {
2537 if (trans) { 2536 if (trans) {
2538 trans->param_flags = 2537 trans->param_flags =
2539 (trans->param 2538 (trans->param_flags & ~SPP_SACKDELAY) |
2540 sackdelay_cha 2539 sackdelay_change;
2541 } else if (asoc) { 2540 } else if (asoc) {
2542 asoc->param_flags = 2541 asoc->param_flags =
2543 (asoc->param_ 2542 (asoc->param_flags & ~SPP_SACKDELAY) |
2544 sackdelay_cha 2543 sackdelay_change;
2545 } else { 2544 } else {
2546 sp->param_flags = 2545 sp->param_flags =
2547 (sp->param_fl 2546 (sp->param_flags & ~SPP_SACKDELAY) |
2548 sackdelay_cha 2547 sackdelay_change;
2549 } 2548 }
2550 } 2549 }
2551 2550
2552 /* Note that a value of zero indicate 2551 /* Note that a value of zero indicates the current setting should be
2553 left unchanged. 2552 left unchanged.
2554 */ 2553 */
2555 if (params->spp_pathmaxrxt) { 2554 if (params->spp_pathmaxrxt) {
2556 if (trans) { 2555 if (trans) {
2557 trans->pathmaxrxt = p 2556 trans->pathmaxrxt = params->spp_pathmaxrxt;
2558 } else if (asoc) { 2557 } else if (asoc) {
2559 asoc->pathmaxrxt = pa 2558 asoc->pathmaxrxt = params->spp_pathmaxrxt;
2560 } else { 2559 } else {
2561 sp->pathmaxrxt = para 2560 sp->pathmaxrxt = params->spp_pathmaxrxt;
2562 } 2561 }
2563 } 2562 }
2564 2563
2565 if (params->spp_flags & SPP_IPV6_FLOW 2564 if (params->spp_flags & SPP_IPV6_FLOWLABEL) {
2566 if (trans) { 2565 if (trans) {
2567 if (trans->ipaddr.sa. 2566 if (trans->ipaddr.sa.sa_family == AF_INET6) {
2568 trans->flowla 2567 trans->flowlabel = params->spp_ipv6_flowlabel &
2569 2568 SCTP_FLOWLABEL_VAL_MASK;
2570 trans->flowla 2569 trans->flowlabel |= SCTP_FLOWLABEL_SET_MASK;
2571 } 2570 }
2572 } else if (asoc) { 2571 } else if (asoc) {
2573 struct sctp_transport 2572 struct sctp_transport *t;
2574 2573
2575 list_for_each_entry(t 2574 list_for_each_entry(t, &asoc->peer.transport_addr_list,
2576 t 2575 transports) {
2577 if (t->ipaddr 2576 if (t->ipaddr.sa.sa_family != AF_INET6)
2578 conti 2577 continue;
2579 t->flowlabel 2578 t->flowlabel = params->spp_ipv6_flowlabel &
2580 2579 SCTP_FLOWLABEL_VAL_MASK;
2581 t->flowlabel 2580 t->flowlabel |= SCTP_FLOWLABEL_SET_MASK;
2582 } 2581 }
2583 asoc->flowlabel = par 2582 asoc->flowlabel = params->spp_ipv6_flowlabel &
2584 SCT 2583 SCTP_FLOWLABEL_VAL_MASK;
2585 asoc->flowlabel |= SC 2584 asoc->flowlabel |= SCTP_FLOWLABEL_SET_MASK;
2586 } else if (sctp_opt2sk(sp)->s 2585 } else if (sctp_opt2sk(sp)->sk_family == AF_INET6) {
2587 sp->flowlabel = param 2586 sp->flowlabel = params->spp_ipv6_flowlabel &
2588 SCTP_ 2587 SCTP_FLOWLABEL_VAL_MASK;
2589 sp->flowlabel |= SCTP 2588 sp->flowlabel |= SCTP_FLOWLABEL_SET_MASK;
2590 } 2589 }
2591 } 2590 }
2592 2591
2593 if (params->spp_flags & SPP_DSCP) { 2592 if (params->spp_flags & SPP_DSCP) {
2594 if (trans) { 2593 if (trans) {
2595 trans->dscp = params- 2594 trans->dscp = params->spp_dscp & SCTP_DSCP_VAL_MASK;
2596 trans->dscp |= SCTP_D 2595 trans->dscp |= SCTP_DSCP_SET_MASK;
2597 } else if (asoc) { 2596 } else if (asoc) {
2598 struct sctp_transport 2597 struct sctp_transport *t;
2599 2598
2600 list_for_each_entry(t 2599 list_for_each_entry(t, &asoc->peer.transport_addr_list,
2601 t 2600 transports) {
2602 t->dscp = par 2601 t->dscp = params->spp_dscp &
2603 SCT 2602 SCTP_DSCP_VAL_MASK;
2604 t->dscp |= SC 2603 t->dscp |= SCTP_DSCP_SET_MASK;
2605 } 2604 }
2606 asoc->dscp = params-> 2605 asoc->dscp = params->spp_dscp & SCTP_DSCP_VAL_MASK;
2607 asoc->dscp |= SCTP_DS 2606 asoc->dscp |= SCTP_DSCP_SET_MASK;
2608 } else { 2607 } else {
2609 sp->dscp = params->sp 2608 sp->dscp = params->spp_dscp & SCTP_DSCP_VAL_MASK;
2610 sp->dscp |= SCTP_DSCP 2609 sp->dscp |= SCTP_DSCP_SET_MASK;
2611 } 2610 }
2612 } 2611 }
2613 2612
2614 return 0; 2613 return 0;
2615 } 2614 }
2616 2615
2617 static int sctp_setsockopt_peer_addr_params(s 2616 static int sctp_setsockopt_peer_addr_params(struct sock *sk,
2618 s 2617 struct sctp_paddrparams *params,
2619 u 2618 unsigned int optlen)
2620 { 2619 {
2621 struct sctp_transport *trans = NULL 2620 struct sctp_transport *trans = NULL;
2622 struct sctp_association *asoc = NULL; 2621 struct sctp_association *asoc = NULL;
2623 struct sctp_sock *sp = sctp_sk 2622 struct sctp_sock *sp = sctp_sk(sk);
2624 int error; 2623 int error;
2625 int hb_change, pmtud_change, sackdela 2624 int hb_change, pmtud_change, sackdelay_change;
2626 2625
2627 if (optlen == ALIGN(offsetof(struct s 2626 if (optlen == ALIGN(offsetof(struct sctp_paddrparams,
2628 s 2627 spp_ipv6_flowlabel), 4)) {
2629 if (params->spp_flags & (SPP_ 2628 if (params->spp_flags & (SPP_DSCP | SPP_IPV6_FLOWLABEL))
2630 return -EINVAL; 2629 return -EINVAL;
2631 } else if (optlen != sizeof(*params)) 2630 } else if (optlen != sizeof(*params)) {
2632 return -EINVAL; 2631 return -EINVAL;
2633 } 2632 }
2634 2633
2635 /* Validate flags and value parameter 2634 /* Validate flags and value parameters. */
2636 hb_change = params->spp_flags 2635 hb_change = params->spp_flags & SPP_HB;
2637 pmtud_change = params->spp_flags 2636 pmtud_change = params->spp_flags & SPP_PMTUD;
2638 sackdelay_change = params->spp_flags 2637 sackdelay_change = params->spp_flags & SPP_SACKDELAY;
2639 2638
2640 if (hb_change == SPP_HB || 2639 if (hb_change == SPP_HB ||
2641 pmtud_change == SPP_PMTUD || 2640 pmtud_change == SPP_PMTUD ||
2642 sackdelay_change == SPP_SACKDELAY 2641 sackdelay_change == SPP_SACKDELAY ||
2643 params->spp_sackdelay > 500 || 2642 params->spp_sackdelay > 500 ||
2644 (params->spp_pathmtu && 2643 (params->spp_pathmtu &&
2645 params->spp_pathmtu < SCTP_DEFAU 2644 params->spp_pathmtu < SCTP_DEFAULT_MINSEGMENT))
2646 return -EINVAL; 2645 return -EINVAL;
2647 2646
2648 /* If an address other than INADDR_AN 2647 /* If an address other than INADDR_ANY is specified, and
2649 * no transport is found, then the re 2648 * no transport is found, then the request is invalid.
2650 */ 2649 */
2651 if (!sctp_is_any(sk, (union sctp_addr 2650 if (!sctp_is_any(sk, (union sctp_addr *)¶ms->spp_address)) {
2652 trans = sctp_addr_id2transpor 2651 trans = sctp_addr_id2transport(sk, ¶ms->spp_address,
2653 2652 params->spp_assoc_id);
2654 if (!trans) 2653 if (!trans)
2655 return -EINVAL; 2654 return -EINVAL;
2656 } 2655 }
2657 2656
2658 /* Get association, if assoc_id != SC 2657 /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the
2659 * socket is a one to many style sock 2658 * socket is a one to many style socket, and an association
2660 * was not found, then the id was inv 2659 * was not found, then the id was invalid.
2661 */ 2660 */
2662 asoc = sctp_id2assoc(sk, params->spp_ 2661 asoc = sctp_id2assoc(sk, params->spp_assoc_id);
2663 if (!asoc && params->spp_assoc_id != 2662 if (!asoc && params->spp_assoc_id != SCTP_FUTURE_ASSOC &&
2664 sctp_style(sk, UDP)) 2663 sctp_style(sk, UDP))
2665 return -EINVAL; 2664 return -EINVAL;
2666 2665
2667 /* Heartbeat demand can only be sent 2666 /* Heartbeat demand can only be sent on a transport or
2668 * association, but not a socket. 2667 * association, but not a socket.
2669 */ 2668 */
2670 if (params->spp_flags & SPP_HB_DEMAND 2669 if (params->spp_flags & SPP_HB_DEMAND && !trans && !asoc)
2671 return -EINVAL; 2670 return -EINVAL;
2672 2671
2673 /* Process parameters. */ 2672 /* Process parameters. */
2674 error = sctp_apply_peer_addr_params(p 2673 error = sctp_apply_peer_addr_params(params, trans, asoc, sp,
2675 h 2674 hb_change, pmtud_change,
2676 s 2675 sackdelay_change);
2677 2676
2678 if (error) 2677 if (error)
2679 return error; 2678 return error;
2680 2679
2681 /* If changes are for association, al 2680 /* If changes are for association, also apply parameters to each
2682 * transport. 2681 * transport.
2683 */ 2682 */
2684 if (!trans && asoc) { 2683 if (!trans && asoc) {
2685 list_for_each_entry(trans, &a 2684 list_for_each_entry(trans, &asoc->peer.transport_addr_list,
2686 transports) { 2685 transports) {
2687 sctp_apply_peer_addr_ 2686 sctp_apply_peer_addr_params(params, trans, asoc, sp,
2688 2687 hb_change, pmtud_change,
2689 2688 sackdelay_change);
2690 } 2689 }
2691 } 2690 }
2692 2691
2693 return 0; 2692 return 0;
2694 } 2693 }
2695 2694
2696 static inline __u32 sctp_spp_sackdelay_enable 2695 static inline __u32 sctp_spp_sackdelay_enable(__u32 param_flags)
2697 { 2696 {
2698 return (param_flags & ~SPP_SACKDELAY) 2697 return (param_flags & ~SPP_SACKDELAY) | SPP_SACKDELAY_ENABLE;
2699 } 2698 }
2700 2699
2701 static inline __u32 sctp_spp_sackdelay_disabl 2700 static inline __u32 sctp_spp_sackdelay_disable(__u32 param_flags)
2702 { 2701 {
2703 return (param_flags & ~SPP_SACKDELAY) 2702 return (param_flags & ~SPP_SACKDELAY) | SPP_SACKDELAY_DISABLE;
2704 } 2703 }
2705 2704
2706 static void sctp_apply_asoc_delayed_ack(struc 2705 static void sctp_apply_asoc_delayed_ack(struct sctp_sack_info *params,
2707 struc 2706 struct sctp_association *asoc)
2708 { 2707 {
2709 struct sctp_transport *trans; 2708 struct sctp_transport *trans;
2710 2709
2711 if (params->sack_delay) { 2710 if (params->sack_delay) {
2712 asoc->sackdelay = msecs_to_ji 2711 asoc->sackdelay = msecs_to_jiffies(params->sack_delay);
2713 asoc->param_flags = 2712 asoc->param_flags =
2714 sctp_spp_sackdelay_en 2713 sctp_spp_sackdelay_enable(asoc->param_flags);
2715 } 2714 }
2716 if (params->sack_freq == 1) { 2715 if (params->sack_freq == 1) {
2717 asoc->param_flags = 2716 asoc->param_flags =
2718 sctp_spp_sackdelay_di 2717 sctp_spp_sackdelay_disable(asoc->param_flags);
2719 } else if (params->sack_freq > 1) { 2718 } else if (params->sack_freq > 1) {
2720 asoc->sackfreq = params->sack 2719 asoc->sackfreq = params->sack_freq;
2721 asoc->param_flags = 2720 asoc->param_flags =
2722 sctp_spp_sackdelay_en 2721 sctp_spp_sackdelay_enable(asoc->param_flags);
2723 } 2722 }
2724 2723
2725 list_for_each_entry(trans, &asoc->pee 2724 list_for_each_entry(trans, &asoc->peer.transport_addr_list,
2726 transports) { 2725 transports) {
2727 if (params->sack_delay) { 2726 if (params->sack_delay) {
2728 trans->sackdelay = ms 2727 trans->sackdelay = msecs_to_jiffies(params->sack_delay);
2729 trans->param_flags = 2728 trans->param_flags =
2730 sctp_spp_sack 2729 sctp_spp_sackdelay_enable(trans->param_flags);
2731 } 2730 }
2732 if (params->sack_freq == 1) { 2731 if (params->sack_freq == 1) {
2733 trans->param_flags = 2732 trans->param_flags =
2734 sctp_spp_sack 2733 sctp_spp_sackdelay_disable(trans->param_flags);
2735 } else if (params->sack_freq 2734 } else if (params->sack_freq > 1) {
2736 trans->sackfreq = par 2735 trans->sackfreq = params->sack_freq;
2737 trans->param_flags = 2736 trans->param_flags =
2738 sctp_spp_sack 2737 sctp_spp_sackdelay_enable(trans->param_flags);
2739 } 2738 }
2740 } 2739 }
2741 } 2740 }
2742 2741
2743 /* 2742 /*
2744 * 7.1.23. Get or set delayed ack timer (SCT 2743 * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
2745 * 2744 *
2746 * This option will effect the way delayed ac 2745 * This option will effect the way delayed acks are performed. This
2747 * option allows you to get or set the delaye 2746 * option allows you to get or set the delayed ack time, in
2748 * milliseconds. It also allows changing the 2747 * milliseconds. It also allows changing the delayed ack frequency.
2749 * Changing the frequency to 1 disables the d 2748 * Changing the frequency to 1 disables the delayed sack algorithm. If
2750 * the assoc_id is 0, then this sets or gets 2749 * the assoc_id is 0, then this sets or gets the endpoints default
2751 * values. If the assoc_id field is non-zero 2750 * values. If the assoc_id field is non-zero, then the set or get
2752 * effects the specified association for the 2751 * effects the specified association for the one to many model (the
2753 * assoc_id field is ignored by the one to on 2752 * assoc_id field is ignored by the one to one model). Note that if
2754 * sack_delay or sack_freq are 0 when setting 2753 * sack_delay or sack_freq are 0 when setting this option, then the
2755 * current values will remain unchanged. 2754 * current values will remain unchanged.
2756 * 2755 *
2757 * struct sctp_sack_info { 2756 * struct sctp_sack_info {
2758 * sctp_assoc_t sack_assoc_id; 2757 * sctp_assoc_t sack_assoc_id;
2759 * uint32_t sack_delay; 2758 * uint32_t sack_delay;
2760 * uint32_t sack_freq; 2759 * uint32_t sack_freq;
2761 * }; 2760 * };
2762 * 2761 *
2763 * sack_assoc_id - This parameter, indicates 2762 * sack_assoc_id - This parameter, indicates which association the user
2764 * is performing an action upon. Note tha 2763 * is performing an action upon. Note that if this field's value is
2765 * zero then the endpoints default value i 2764 * zero then the endpoints default value is changed (effecting future
2766 * associations only). 2765 * associations only).
2767 * 2766 *
2768 * sack_delay - This parameter contains the 2767 * sack_delay - This parameter contains the number of milliseconds that
2769 * the user is requesting the delayed ACK 2768 * the user is requesting the delayed ACK timer be set to. Note that
2770 * this value is defined in the standard t 2769 * this value is defined in the standard to be between 200 and 500
2771 * milliseconds. 2770 * milliseconds.
2772 * 2771 *
2773 * sack_freq - This parameter contains the n 2772 * sack_freq - This parameter contains the number of packets that must
2774 * be received before a sack is sent witho 2773 * be received before a sack is sent without waiting for the delay
2775 * timer to expire. The default value for 2774 * timer to expire. The default value for this is 2, setting this
2776 * value to 1 will disable the delayed sac 2775 * value to 1 will disable the delayed sack algorithm.
2777 */ 2776 */
2778 static int __sctp_setsockopt_delayed_ack(stru 2777 static int __sctp_setsockopt_delayed_ack(struct sock *sk,
2779 stru 2778 struct sctp_sack_info *params)
2780 { 2779 {
2781 struct sctp_sock *sp = sctp_sk(sk); 2780 struct sctp_sock *sp = sctp_sk(sk);
2782 struct sctp_association *asoc; 2781 struct sctp_association *asoc;
2783 2782
2784 /* Validate value parameter. */ 2783 /* Validate value parameter. */
2785 if (params->sack_delay > 500) 2784 if (params->sack_delay > 500)
2786 return -EINVAL; 2785 return -EINVAL;
2787 2786
2788 /* Get association, if sack_assoc_id 2787 /* Get association, if sack_assoc_id != SCTP_FUTURE_ASSOC and the
2789 * socket is a one to many style sock 2788 * socket is a one to many style socket, and an association
2790 * was not found, then the id was inv 2789 * was not found, then the id was invalid.
2791 */ 2790 */
2792 asoc = sctp_id2assoc(sk, params->sack 2791 asoc = sctp_id2assoc(sk, params->sack_assoc_id);
2793 if (!asoc && params->sack_assoc_id > 2792 if (!asoc && params->sack_assoc_id > SCTP_ALL_ASSOC &&
2794 sctp_style(sk, UDP)) 2793 sctp_style(sk, UDP))
2795 return -EINVAL; 2794 return -EINVAL;
2796 2795
2797 if (asoc) { 2796 if (asoc) {
2798 sctp_apply_asoc_delayed_ack(p 2797 sctp_apply_asoc_delayed_ack(params, asoc);
2799 2798
2800 return 0; 2799 return 0;
2801 } 2800 }
2802 2801
2803 if (sctp_style(sk, TCP)) 2802 if (sctp_style(sk, TCP))
2804 params->sack_assoc_id = SCTP_ 2803 params->sack_assoc_id = SCTP_FUTURE_ASSOC;
2805 2804
2806 if (params->sack_assoc_id == SCTP_FUT 2805 if (params->sack_assoc_id == SCTP_FUTURE_ASSOC ||
2807 params->sack_assoc_id == SCTP_ALL 2806 params->sack_assoc_id == SCTP_ALL_ASSOC) {
2808 if (params->sack_delay) { 2807 if (params->sack_delay) {
2809 sp->sackdelay = param 2808 sp->sackdelay = params->sack_delay;
2810 sp->param_flags = 2809 sp->param_flags =
2811 sctp_spp_sack 2810 sctp_spp_sackdelay_enable(sp->param_flags);
2812 } 2811 }
2813 if (params->sack_freq == 1) { 2812 if (params->sack_freq == 1) {
2814 sp->param_flags = 2813 sp->param_flags =
2815 sctp_spp_sack 2814 sctp_spp_sackdelay_disable(sp->param_flags);
2816 } else if (params->sack_freq 2815 } else if (params->sack_freq > 1) {
2817 sp->sackfreq = params 2816 sp->sackfreq = params->sack_freq;
2818 sp->param_flags = 2817 sp->param_flags =
2819 sctp_spp_sack 2818 sctp_spp_sackdelay_enable(sp->param_flags);
2820 } 2819 }
2821 } 2820 }
2822 2821
2823 if (params->sack_assoc_id == SCTP_CUR 2822 if (params->sack_assoc_id == SCTP_CURRENT_ASSOC ||
2824 params->sack_assoc_id == SCTP_ALL 2823 params->sack_assoc_id == SCTP_ALL_ASSOC)
2825 list_for_each_entry(asoc, &sp 2824 list_for_each_entry(asoc, &sp->ep->asocs, asocs)
2826 sctp_apply_asoc_delay 2825 sctp_apply_asoc_delayed_ack(params, asoc);
2827 2826
2828 return 0; 2827 return 0;
2829 } 2828 }
2830 2829
2831 static int sctp_setsockopt_delayed_ack(struct 2830 static int sctp_setsockopt_delayed_ack(struct sock *sk,
2832 struct 2831 struct sctp_sack_info *params,
2833 unsign 2832 unsigned int optlen)
2834 { 2833 {
2835 if (optlen == sizeof(struct sctp_asso 2834 if (optlen == sizeof(struct sctp_assoc_value)) {
2836 struct sctp_assoc_value *v = 2835 struct sctp_assoc_value *v = (struct sctp_assoc_value *)params;
2837 struct sctp_sack_info p; 2836 struct sctp_sack_info p;
2838 2837
2839 pr_warn_ratelimited(DEPRECATE 2838 pr_warn_ratelimited(DEPRECATED
2840 "%s (pid 2839 "%s (pid %d) "
2841 "Use of s 2840 "Use of struct sctp_assoc_value in delayed_ack socket option.\n"
2842 "Use stru 2841 "Use struct sctp_sack_info instead\n",
2843 current-> 2842 current->comm, task_pid_nr(current));
2844 2843
2845 p.sack_assoc_id = v->assoc_id 2844 p.sack_assoc_id = v->assoc_id;
2846 p.sack_delay = v->assoc_value 2845 p.sack_delay = v->assoc_value;
2847 p.sack_freq = v->assoc_value 2846 p.sack_freq = v->assoc_value ? 0 : 1;
2848 return __sctp_setsockopt_dela 2847 return __sctp_setsockopt_delayed_ack(sk, &p);
2849 } 2848 }
2850 2849
2851 if (optlen != sizeof(struct sctp_sack 2850 if (optlen != sizeof(struct sctp_sack_info))
2852 return -EINVAL; 2851 return -EINVAL;
2853 if (params->sack_delay == 0 && params 2852 if (params->sack_delay == 0 && params->sack_freq == 0)
2854 return 0; 2853 return 0;
2855 return __sctp_setsockopt_delayed_ack( 2854 return __sctp_setsockopt_delayed_ack(sk, params);
2856 } 2855 }
2857 2856
2858 /* 7.1.3 Initialization Parameters (SCTP_INIT 2857 /* 7.1.3 Initialization Parameters (SCTP_INITMSG)
2859 * 2858 *
2860 * Applications can specify protocol paramete 2859 * Applications can specify protocol parameters for the default association
2861 * initialization. The option name argument 2860 * initialization. The option name argument to setsockopt() and getsockopt()
2862 * is SCTP_INITMSG. 2861 * is SCTP_INITMSG.
2863 * 2862 *
2864 * Setting initialization parameters is effec 2863 * Setting initialization parameters is effective only on an unconnected
2865 * socket (for UDP-style sockets only future 2864 * socket (for UDP-style sockets only future associations are effected
2866 * by the change). With TCP-style sockets, t 2865 * by the change). With TCP-style sockets, this option is inherited by
2867 * sockets derived from a listener socket. 2866 * sockets derived from a listener socket.
2868 */ 2867 */
2869 static int sctp_setsockopt_initmsg(struct soc 2868 static int sctp_setsockopt_initmsg(struct sock *sk, struct sctp_initmsg *sinit,
2870 unsigned i 2869 unsigned int optlen)
2871 { 2870 {
2872 struct sctp_sock *sp = sctp_sk(sk); 2871 struct sctp_sock *sp = sctp_sk(sk);
2873 2872
2874 if (optlen != sizeof(struct sctp_init 2873 if (optlen != sizeof(struct sctp_initmsg))
2875 return -EINVAL; 2874 return -EINVAL;
2876 2875
2877 if (sinit->sinit_num_ostreams) 2876 if (sinit->sinit_num_ostreams)
2878 sp->initmsg.sinit_num_ostream 2877 sp->initmsg.sinit_num_ostreams = sinit->sinit_num_ostreams;
2879 if (sinit->sinit_max_instreams) 2878 if (sinit->sinit_max_instreams)
2880 sp->initmsg.sinit_max_instrea 2879 sp->initmsg.sinit_max_instreams = sinit->sinit_max_instreams;
2881 if (sinit->sinit_max_attempts) 2880 if (sinit->sinit_max_attempts)
2882 sp->initmsg.sinit_max_attempt 2881 sp->initmsg.sinit_max_attempts = sinit->sinit_max_attempts;
2883 if (sinit->sinit_max_init_timeo) 2882 if (sinit->sinit_max_init_timeo)
2884 sp->initmsg.sinit_max_init_ti 2883 sp->initmsg.sinit_max_init_timeo = sinit->sinit_max_init_timeo;
2885 2884
2886 return 0; 2885 return 0;
2887 } 2886 }
2888 2887
2889 /* 2888 /*
2890 * 7.1.14 Set default send parameters (SCTP_D 2889 * 7.1.14 Set default send parameters (SCTP_DEFAULT_SEND_PARAM)
2891 * 2890 *
2892 * Applications that wish to use the sendto 2891 * Applications that wish to use the sendto() system call may wish to
2893 * specify a default set of parameters that 2892 * specify a default set of parameters that would normally be supplied
2894 * through the inclusion of ancillary data. 2893 * through the inclusion of ancillary data. This socket option allows
2895 * such an application to set the default s 2894 * such an application to set the default sctp_sndrcvinfo structure.
2896 * The application that wishes to use this 2895 * The application that wishes to use this socket option simply passes
2897 * in to this call the sctp_sndrcvinfo stru 2896 * in to this call the sctp_sndrcvinfo structure defined in Section
2898 * 5.2.2) The input parameters accepted by 2897 * 5.2.2) The input parameters accepted by this call include
2899 * sinfo_stream, sinfo_flags, sinfo_ppid, s 2898 * sinfo_stream, sinfo_flags, sinfo_ppid, sinfo_context,
2900 * sinfo_timetolive. The user must provide 2899 * sinfo_timetolive. The user must provide the sinfo_assoc_id field in
2901 * to this call if the caller is using the 2900 * to this call if the caller is using the UDP model.
2902 */ 2901 */
2903 static int sctp_setsockopt_default_send_param 2902 static int sctp_setsockopt_default_send_param(struct sock *sk,
2904 2903 struct sctp_sndrcvinfo *info,
2905 2904 unsigned int optlen)
2906 { 2905 {
2907 struct sctp_sock *sp = sctp_sk(sk); 2906 struct sctp_sock *sp = sctp_sk(sk);
2908 struct sctp_association *asoc; 2907 struct sctp_association *asoc;
2909 2908
2910 if (optlen != sizeof(*info)) 2909 if (optlen != sizeof(*info))
2911 return -EINVAL; 2910 return -EINVAL;
2912 if (info->sinfo_flags & 2911 if (info->sinfo_flags &
2913 ~(SCTP_UNORDERED | SCTP_ADDR_OVER 2912 ~(SCTP_UNORDERED | SCTP_ADDR_OVER |
2914 SCTP_ABORT | SCTP_EOF)) 2913 SCTP_ABORT | SCTP_EOF))
2915 return -EINVAL; 2914 return -EINVAL;
2916 2915
2917 asoc = sctp_id2assoc(sk, info->sinfo_ 2916 asoc = sctp_id2assoc(sk, info->sinfo_assoc_id);
2918 if (!asoc && info->sinfo_assoc_id > S 2917 if (!asoc && info->sinfo_assoc_id > SCTP_ALL_ASSOC &&
2919 sctp_style(sk, UDP)) 2918 sctp_style(sk, UDP))
2920 return -EINVAL; 2919 return -EINVAL;
2921 2920
2922 if (asoc) { 2921 if (asoc) {
2923 asoc->default_stream = info-> 2922 asoc->default_stream = info->sinfo_stream;
2924 asoc->default_flags = info->s 2923 asoc->default_flags = info->sinfo_flags;
2925 asoc->default_ppid = info->si 2924 asoc->default_ppid = info->sinfo_ppid;
2926 asoc->default_context = info- 2925 asoc->default_context = info->sinfo_context;
2927 asoc->default_timetolive = in 2926 asoc->default_timetolive = info->sinfo_timetolive;
2928 2927
2929 return 0; 2928 return 0;
2930 } 2929 }
2931 2930
2932 if (sctp_style(sk, TCP)) 2931 if (sctp_style(sk, TCP))
2933 info->sinfo_assoc_id = SCTP_F 2932 info->sinfo_assoc_id = SCTP_FUTURE_ASSOC;
2934 2933
2935 if (info->sinfo_assoc_id == SCTP_FUTU 2934 if (info->sinfo_assoc_id == SCTP_FUTURE_ASSOC ||
2936 info->sinfo_assoc_id == SCTP_ALL_ 2935 info->sinfo_assoc_id == SCTP_ALL_ASSOC) {
2937 sp->default_stream = info->si 2936 sp->default_stream = info->sinfo_stream;
2938 sp->default_flags = info->sin 2937 sp->default_flags = info->sinfo_flags;
2939 sp->default_ppid = info->sinf 2938 sp->default_ppid = info->sinfo_ppid;
2940 sp->default_context = info->s 2939 sp->default_context = info->sinfo_context;
2941 sp->default_timetolive = info 2940 sp->default_timetolive = info->sinfo_timetolive;
2942 } 2941 }
2943 2942
2944 if (info->sinfo_assoc_id == SCTP_CURR 2943 if (info->sinfo_assoc_id == SCTP_CURRENT_ASSOC ||
2945 info->sinfo_assoc_id == SCTP_ALL_ 2944 info->sinfo_assoc_id == SCTP_ALL_ASSOC) {
2946 list_for_each_entry(asoc, &sp 2945 list_for_each_entry(asoc, &sp->ep->asocs, asocs) {
2947 asoc->default_stream 2946 asoc->default_stream = info->sinfo_stream;
2948 asoc->default_flags = 2947 asoc->default_flags = info->sinfo_flags;
2949 asoc->default_ppid = 2948 asoc->default_ppid = info->sinfo_ppid;
2950 asoc->default_context 2949 asoc->default_context = info->sinfo_context;
2951 asoc->default_timetol 2950 asoc->default_timetolive = info->sinfo_timetolive;
2952 } 2951 }
2953 } 2952 }
2954 2953
2955 return 0; 2954 return 0;
2956 } 2955 }
2957 2956
2958 /* RFC6458, Section 8.1.31. Set/get Default S 2957 /* RFC6458, Section 8.1.31. Set/get Default Send Parameters
2959 * (SCTP_DEFAULT_SNDINFO) 2958 * (SCTP_DEFAULT_SNDINFO)
2960 */ 2959 */
2961 static int sctp_setsockopt_default_sndinfo(st 2960 static int sctp_setsockopt_default_sndinfo(struct sock *sk,
2962 st 2961 struct sctp_sndinfo *info,
2963 un 2962 unsigned int optlen)
2964 { 2963 {
2965 struct sctp_sock *sp = sctp_sk(sk); 2964 struct sctp_sock *sp = sctp_sk(sk);
2966 struct sctp_association *asoc; 2965 struct sctp_association *asoc;
2967 2966
2968 if (optlen != sizeof(*info)) 2967 if (optlen != sizeof(*info))
2969 return -EINVAL; 2968 return -EINVAL;
2970 if (info->snd_flags & 2969 if (info->snd_flags &
2971 ~(SCTP_UNORDERED | SCTP_ADDR_OVER 2970 ~(SCTP_UNORDERED | SCTP_ADDR_OVER |
2972 SCTP_ABORT | SCTP_EOF)) 2971 SCTP_ABORT | SCTP_EOF))
2973 return -EINVAL; 2972 return -EINVAL;
2974 2973
2975 asoc = sctp_id2assoc(sk, info->snd_as 2974 asoc = sctp_id2assoc(sk, info->snd_assoc_id);
2976 if (!asoc && info->snd_assoc_id > SCT 2975 if (!asoc && info->snd_assoc_id > SCTP_ALL_ASSOC &&
2977 sctp_style(sk, UDP)) 2976 sctp_style(sk, UDP))
2978 return -EINVAL; 2977 return -EINVAL;
2979 2978
2980 if (asoc) { 2979 if (asoc) {
2981 asoc->default_stream = info-> 2980 asoc->default_stream = info->snd_sid;
2982 asoc->default_flags = info->s 2981 asoc->default_flags = info->snd_flags;
2983 asoc->default_ppid = info->sn 2982 asoc->default_ppid = info->snd_ppid;
2984 asoc->default_context = info- 2983 asoc->default_context = info->snd_context;
2985 2984
2986 return 0; 2985 return 0;
2987 } 2986 }
2988 2987
2989 if (sctp_style(sk, TCP)) 2988 if (sctp_style(sk, TCP))
2990 info->snd_assoc_id = SCTP_FUT 2989 info->snd_assoc_id = SCTP_FUTURE_ASSOC;
2991 2990
2992 if (info->snd_assoc_id == SCTP_FUTURE 2991 if (info->snd_assoc_id == SCTP_FUTURE_ASSOC ||
2993 info->snd_assoc_id == SCTP_ALL_AS 2992 info->snd_assoc_id == SCTP_ALL_ASSOC) {
2994 sp->default_stream = info->sn 2993 sp->default_stream = info->snd_sid;
2995 sp->default_flags = info->snd 2994 sp->default_flags = info->snd_flags;
2996 sp->default_ppid = info->snd_ 2995 sp->default_ppid = info->snd_ppid;
2997 sp->default_context = info->s 2996 sp->default_context = info->snd_context;
2998 } 2997 }
2999 2998
3000 if (info->snd_assoc_id == SCTP_CURREN 2999 if (info->snd_assoc_id == SCTP_CURRENT_ASSOC ||
3001 info->snd_assoc_id == SCTP_ALL_AS 3000 info->snd_assoc_id == SCTP_ALL_ASSOC) {
3002 list_for_each_entry(asoc, &sp 3001 list_for_each_entry(asoc, &sp->ep->asocs, asocs) {
3003 asoc->default_stream 3002 asoc->default_stream = info->snd_sid;
3004 asoc->default_flags = 3003 asoc->default_flags = info->snd_flags;
3005 asoc->default_ppid = 3004 asoc->default_ppid = info->snd_ppid;
3006 asoc->default_context 3005 asoc->default_context = info->snd_context;
3007 } 3006 }
3008 } 3007 }
3009 3008
3010 return 0; 3009 return 0;
3011 } 3010 }
3012 3011
3013 /* 7.1.10 Set Primary Address (SCTP_PRIMARY_A 3012 /* 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR)
3014 * 3013 *
3015 * Requests that the local SCTP stack use the 3014 * Requests that the local SCTP stack use the enclosed peer address as
3016 * the association primary. The enclosed add 3015 * the association primary. The enclosed address must be one of the
3017 * association peer's addresses. 3016 * association peer's addresses.
3018 */ 3017 */
3019 static int sctp_setsockopt_primary_addr(struc 3018 static int sctp_setsockopt_primary_addr(struct sock *sk, struct sctp_prim *prim,
3020 unsig 3019 unsigned int optlen)
3021 { 3020 {
3022 struct sctp_transport *trans; 3021 struct sctp_transport *trans;
3023 struct sctp_af *af; 3022 struct sctp_af *af;
3024 int err; 3023 int err;
3025 3024
3026 if (optlen != sizeof(struct sctp_prim 3025 if (optlen != sizeof(struct sctp_prim))
3027 return -EINVAL; 3026 return -EINVAL;
3028 3027
3029 /* Allow security module to validate 3028 /* Allow security module to validate address but need address len. */
3030 af = sctp_get_af_specific(prim->ssp_a 3029 af = sctp_get_af_specific(prim->ssp_addr.ss_family);
3031 if (!af) 3030 if (!af)
3032 return -EINVAL; 3031 return -EINVAL;
3033 3032
3034 err = security_sctp_bind_connect(sk, 3033 err = security_sctp_bind_connect(sk, SCTP_PRIMARY_ADDR,
3035 (str 3034 (struct sockaddr *)&prim->ssp_addr,
3036 af-> 3035 af->sockaddr_len);
3037 if (err) 3036 if (err)
3038 return err; 3037 return err;
3039 3038
3040 trans = sctp_addr_id2transport(sk, &p 3039 trans = sctp_addr_id2transport(sk, &prim->ssp_addr, prim->ssp_assoc_id);
3041 if (!trans) 3040 if (!trans)
3042 return -EINVAL; 3041 return -EINVAL;
3043 3042
3044 sctp_assoc_set_primary(trans->asoc, t 3043 sctp_assoc_set_primary(trans->asoc, trans);
3045 3044
3046 return 0; 3045 return 0;
3047 } 3046 }
3048 3047
3049 /* 3048 /*
3050 * 7.1.5 SCTP_NODELAY 3049 * 7.1.5 SCTP_NODELAY
3051 * 3050 *
3052 * Turn on/off any Nagle-like algorithm. Thi 3051 * Turn on/off any Nagle-like algorithm. This means that packets are
3053 * generally sent as soon as possible and no 3052 * generally sent as soon as possible and no unnecessary delays are
3054 * introduced, at the cost of more packets in 3053 * introduced, at the cost of more packets in the network. Expects an
3055 * integer boolean flag. 3054 * integer boolean flag.
3056 */ 3055 */
3057 static int sctp_setsockopt_nodelay(struct soc 3056 static int sctp_setsockopt_nodelay(struct sock *sk, int *val,
3058 unsigned i 3057 unsigned int optlen)
3059 { 3058 {
3060 if (optlen < sizeof(int)) 3059 if (optlen < sizeof(int))
3061 return -EINVAL; 3060 return -EINVAL;
3062 sctp_sk(sk)->nodelay = (*val == 0) ? 3061 sctp_sk(sk)->nodelay = (*val == 0) ? 0 : 1;
3063 return 0; 3062 return 0;
3064 } 3063 }
3065 3064
3066 /* 3065 /*
3067 * 3066 *
3068 * 7.1.1 SCTP_RTOINFO 3067 * 7.1.1 SCTP_RTOINFO
3069 * 3068 *
3070 * The protocol parameters used to initialize 3069 * The protocol parameters used to initialize and bound retransmission
3071 * timeout (RTO) are tunable. sctp_rtoinfo st 3070 * timeout (RTO) are tunable. sctp_rtoinfo structure is used to access
3072 * and modify these parameters. 3071 * and modify these parameters.
3073 * All parameters are time values, in millise 3072 * All parameters are time values, in milliseconds. A value of 0, when
3074 * modifying the parameters, indicates that t 3073 * modifying the parameters, indicates that the current value should not
3075 * be changed. 3074 * be changed.
3076 * 3075 *
3077 */ 3076 */
3078 static int sctp_setsockopt_rtoinfo(struct soc 3077 static int sctp_setsockopt_rtoinfo(struct sock *sk,
3079 struct sct 3078 struct sctp_rtoinfo *rtoinfo,
3080 unsigned i 3079 unsigned int optlen)
3081 { 3080 {
3082 struct sctp_association *asoc; 3081 struct sctp_association *asoc;
3083 unsigned long rto_min, rto_max; 3082 unsigned long rto_min, rto_max;
3084 struct sctp_sock *sp = sctp_sk(sk); 3083 struct sctp_sock *sp = sctp_sk(sk);
3085 3084
3086 if (optlen != sizeof (struct sctp_rto 3085 if (optlen != sizeof (struct sctp_rtoinfo))
3087 return -EINVAL; 3086 return -EINVAL;
3088 3087
3089 asoc = sctp_id2assoc(sk, rtoinfo->srt 3088 asoc = sctp_id2assoc(sk, rtoinfo->srto_assoc_id);
3090 3089
3091 /* Set the values to the specific ass 3090 /* Set the values to the specific association */
3092 if (!asoc && rtoinfo->srto_assoc_id ! 3091 if (!asoc && rtoinfo->srto_assoc_id != SCTP_FUTURE_ASSOC &&
3093 sctp_style(sk, UDP)) 3092 sctp_style(sk, UDP))
3094 return -EINVAL; 3093 return -EINVAL;
3095 3094
3096 rto_max = rtoinfo->srto_max; 3095 rto_max = rtoinfo->srto_max;
3097 rto_min = rtoinfo->srto_min; 3096 rto_min = rtoinfo->srto_min;
3098 3097
3099 if (rto_max) 3098 if (rto_max)
3100 rto_max = asoc ? msecs_to_jif 3099 rto_max = asoc ? msecs_to_jiffies(rto_max) : rto_max;
3101 else 3100 else
3102 rto_max = asoc ? asoc->rto_ma 3101 rto_max = asoc ? asoc->rto_max : sp->rtoinfo.srto_max;
3103 3102
3104 if (rto_min) 3103 if (rto_min)
3105 rto_min = asoc ? msecs_to_jif 3104 rto_min = asoc ? msecs_to_jiffies(rto_min) : rto_min;
3106 else 3105 else
3107 rto_min = asoc ? asoc->rto_mi 3106 rto_min = asoc ? asoc->rto_min : sp->rtoinfo.srto_min;
3108 3107
3109 if (rto_min > rto_max) 3108 if (rto_min > rto_max)
3110 return -EINVAL; 3109 return -EINVAL;
3111 3110
3112 if (asoc) { 3111 if (asoc) {
3113 if (rtoinfo->srto_initial != 3112 if (rtoinfo->srto_initial != 0)
3114 asoc->rto_initial = 3113 asoc->rto_initial =
3115 msecs_to_jiff 3114 msecs_to_jiffies(rtoinfo->srto_initial);
3116 asoc->rto_max = rto_max; 3115 asoc->rto_max = rto_max;
3117 asoc->rto_min = rto_min; 3116 asoc->rto_min = rto_min;
3118 } else { 3117 } else {
3119 /* If there is no association 3118 /* If there is no association or the association-id = 0
3120 * set the values to the endp 3119 * set the values to the endpoint.
3121 */ 3120 */
3122 if (rtoinfo->srto_initial != 3121 if (rtoinfo->srto_initial != 0)
3123 sp->rtoinfo.srto_init 3122 sp->rtoinfo.srto_initial = rtoinfo->srto_initial;
3124 sp->rtoinfo.srto_max = rto_ma 3123 sp->rtoinfo.srto_max = rto_max;
3125 sp->rtoinfo.srto_min = rto_mi 3124 sp->rtoinfo.srto_min = rto_min;
3126 } 3125 }
3127 3126
3128 return 0; 3127 return 0;
3129 } 3128 }
3130 3129
3131 /* 3130 /*
3132 * 3131 *
3133 * 7.1.2 SCTP_ASSOCINFO 3132 * 7.1.2 SCTP_ASSOCINFO
3134 * 3133 *
3135 * This option is used to tune the maximum re 3134 * This option is used to tune the maximum retransmission attempts
3136 * of the association. 3135 * of the association.
3137 * Returns an error if the new association re 3136 * Returns an error if the new association retransmission value is
3138 * greater than the sum of the retransmission 3137 * greater than the sum of the retransmission value of the peer.
3139 * See [SCTP] for more information. 3138 * See [SCTP] for more information.
3140 * 3139 *
3141 */ 3140 */
3142 static int sctp_setsockopt_associnfo(struct s 3141 static int sctp_setsockopt_associnfo(struct sock *sk,
3143 struct s 3142 struct sctp_assocparams *assocparams,
3144 unsigned 3143 unsigned int optlen)
3145 { 3144 {
3146 3145
3147 struct sctp_association *asoc; 3146 struct sctp_association *asoc;
3148 3147
3149 if (optlen != sizeof(struct sctp_asso 3148 if (optlen != sizeof(struct sctp_assocparams))
3150 return -EINVAL; 3149 return -EINVAL;
3151 3150
3152 asoc = sctp_id2assoc(sk, assocparams- 3151 asoc = sctp_id2assoc(sk, assocparams->sasoc_assoc_id);
3153 3152
3154 if (!asoc && assocparams->sasoc_assoc 3153 if (!asoc && assocparams->sasoc_assoc_id != SCTP_FUTURE_ASSOC &&
3155 sctp_style(sk, UDP)) 3154 sctp_style(sk, UDP))
3156 return -EINVAL; 3155 return -EINVAL;
3157 3156
3158 /* Set the values to the specific ass 3157 /* Set the values to the specific association */
3159 if (asoc) { 3158 if (asoc) {
3160 if (assocparams->sasoc_asocma 3159 if (assocparams->sasoc_asocmaxrxt != 0) {
3161 __u32 path_sum = 0; 3160 __u32 path_sum = 0;
3162 int paths = 0; 3161 int paths = 0;
3163 struct sctp_transport 3162 struct sctp_transport *peer_addr;
3164 3163
3165 list_for_each_entry(p 3164 list_for_each_entry(peer_addr, &asoc->peer.transport_addr_list,
3166 trans 3165 transports) {
3167 path_sum += p 3166 path_sum += peer_addr->pathmaxrxt;
3168 paths++; 3167 paths++;
3169 } 3168 }
3170 3169
3171 /* Only validate asoc 3170 /* Only validate asocmaxrxt if we have more than
3172 * one path/transport 3171 * one path/transport. We do this because path
3173 * retransmissions ar 3172 * retransmissions are only counted when we have more
3174 * then one path. 3173 * then one path.
3175 */ 3174 */
3176 if (paths > 1 && 3175 if (paths > 1 &&
3177 assocparams->saso 3176 assocparams->sasoc_asocmaxrxt > path_sum)
3178 return -EINVA 3177 return -EINVAL;
3179 3178
3180 asoc->max_retrans = a 3179 asoc->max_retrans = assocparams->sasoc_asocmaxrxt;
3181 } 3180 }
3182 3181
3183 if (assocparams->sasoc_cookie 3182 if (assocparams->sasoc_cookie_life != 0)
3184 asoc->cookie_life = 3183 asoc->cookie_life =
3185 ms_to_ktime(a 3184 ms_to_ktime(assocparams->sasoc_cookie_life);
3186 } else { 3185 } else {
3187 /* Set the values to the endp 3186 /* Set the values to the endpoint */
3188 struct sctp_sock *sp = sctp_s 3187 struct sctp_sock *sp = sctp_sk(sk);
3189 3188
3190 if (assocparams->sasoc_asocma 3189 if (assocparams->sasoc_asocmaxrxt != 0)
3191 sp->assocparams.sasoc 3190 sp->assocparams.sasoc_asocmaxrxt =
3192 3191 assocparams->sasoc_asocmaxrxt;
3193 if (assocparams->sasoc_cookie 3192 if (assocparams->sasoc_cookie_life != 0)
3194 sp->assocparams.sasoc 3193 sp->assocparams.sasoc_cookie_life =
3195 3194 assocparams->sasoc_cookie_life;
3196 } 3195 }
3197 return 0; 3196 return 0;
3198 } 3197 }
3199 3198
3200 /* 3199 /*
3201 * 7.1.16 Set/clear IPv4 mapped addresses (SC 3200 * 7.1.16 Set/clear IPv4 mapped addresses (SCTP_I_WANT_MAPPED_V4_ADDR)
3202 * 3201 *
3203 * This socket option is a boolean flag which 3202 * This socket option is a boolean flag which turns on or off mapped V4
3204 * addresses. If this option is turned on an 3203 * addresses. If this option is turned on and the socket is type
3205 * PF_INET6, then IPv4 addresses will be mapp 3204 * PF_INET6, then IPv4 addresses will be mapped to V6 representation.
3206 * If this option is turned off, then no mapp 3205 * If this option is turned off, then no mapping will be done of V4
3207 * addresses and a user will receive both PF_ 3206 * addresses and a user will receive both PF_INET6 and PF_INET type
3208 * addresses on the socket. 3207 * addresses on the socket.
3209 */ 3208 */
3210 static int sctp_setsockopt_mappedv4(struct so 3209 static int sctp_setsockopt_mappedv4(struct sock *sk, int *val,
3211 unsigned 3210 unsigned int optlen)
3212 { 3211 {
3213 struct sctp_sock *sp = sctp_sk(sk); 3212 struct sctp_sock *sp = sctp_sk(sk);
3214 3213
3215 if (optlen < sizeof(int)) 3214 if (optlen < sizeof(int))
3216 return -EINVAL; 3215 return -EINVAL;
3217 if (*val) 3216 if (*val)
3218 sp->v4mapped = 1; 3217 sp->v4mapped = 1;
3219 else 3218 else
3220 sp->v4mapped = 0; 3219 sp->v4mapped = 0;
3221 3220
3222 return 0; 3221 return 0;
3223 } 3222 }
3224 3223
3225 /* 3224 /*
3226 * 8.1.16. Get or Set the Maximum Fragmentat 3225 * 8.1.16. Get or Set the Maximum Fragmentation Size (SCTP_MAXSEG)
3227 * This option will get or set the maximum si 3226 * This option will get or set the maximum size to put in any outgoing
3228 * SCTP DATA chunk. If a message is larger t 3227 * SCTP DATA chunk. If a message is larger than this size it will be
3229 * fragmented by SCTP into the specified size 3228 * fragmented by SCTP into the specified size. Note that the underlying
3230 * SCTP implementation may fragment into smal 3229 * SCTP implementation may fragment into smaller sized chunks when the
3231 * PMTU of the underlying association is smal 3230 * PMTU of the underlying association is smaller than the value set by
3232 * the user. The default value for this opti 3231 * the user. The default value for this option is '' which indicates
3233 * the user is NOT limiting fragmentation and 3232 * the user is NOT limiting fragmentation and only the PMTU will effect
3234 * SCTP's choice of DATA chunk size. Note al 3233 * SCTP's choice of DATA chunk size. Note also that values set larger
3235 * than the maximum size of an IP datagram wi 3234 * than the maximum size of an IP datagram will effectively let SCTP
3236 * control fragmentation (i.e. the same as se 3235 * control fragmentation (i.e. the same as setting this option to 0).
3237 * 3236 *
3238 * The following structure is used to access 3237 * The following structure is used to access and modify this parameter:
3239 * 3238 *
3240 * struct sctp_assoc_value { 3239 * struct sctp_assoc_value {
3241 * sctp_assoc_t assoc_id; 3240 * sctp_assoc_t assoc_id;
3242 * uint32_t assoc_value; 3241 * uint32_t assoc_value;
3243 * }; 3242 * };
3244 * 3243 *
3245 * assoc_id: This parameter is ignored for o 3244 * assoc_id: This parameter is ignored for one-to-one style sockets.
3246 * For one-to-many style sockets this para 3245 * For one-to-many style sockets this parameter indicates which
3247 * association the user is performing an a 3246 * association the user is performing an action upon. Note that if
3248 * this field's value is zero then the end 3247 * this field's value is zero then the endpoints default value is
3249 * changed (effecting future associations 3248 * changed (effecting future associations only).
3250 * assoc_value: This parameter specifies the 3249 * assoc_value: This parameter specifies the maximum size in bytes.
3251 */ 3250 */
3252 static int sctp_setsockopt_maxseg(struct sock 3251 static int sctp_setsockopt_maxseg(struct sock *sk,
3253 struct sctp 3252 struct sctp_assoc_value *params,
3254 unsigned in 3253 unsigned int optlen)
3255 { 3254 {
3256 struct sctp_sock *sp = sctp_sk(sk); 3255 struct sctp_sock *sp = sctp_sk(sk);
3257 struct sctp_association *asoc; 3256 struct sctp_association *asoc;
3258 sctp_assoc_t assoc_id; 3257 sctp_assoc_t assoc_id;
3259 int val; 3258 int val;
3260 3259
3261 if (optlen == sizeof(int)) { 3260 if (optlen == sizeof(int)) {
3262 pr_warn_ratelimited(DEPRECATE 3261 pr_warn_ratelimited(DEPRECATED
3263 "%s (pid 3262 "%s (pid %d) "
3264 "Use of i 3263 "Use of int in maxseg socket option.\n"
3265 "Use stru 3264 "Use struct sctp_assoc_value instead\n",
3266 current-> 3265 current->comm, task_pid_nr(current));
3267 assoc_id = SCTP_FUTURE_ASSOC; 3266 assoc_id = SCTP_FUTURE_ASSOC;
3268 val = *(int *)params; 3267 val = *(int *)params;
3269 } else if (optlen == sizeof(struct sc 3268 } else if (optlen == sizeof(struct sctp_assoc_value)) {
3270 assoc_id = params->assoc_id; 3269 assoc_id = params->assoc_id;
3271 val = params->assoc_value; 3270 val = params->assoc_value;
3272 } else { 3271 } else {
3273 return -EINVAL; 3272 return -EINVAL;
3274 } 3273 }
3275 3274
3276 asoc = sctp_id2assoc(sk, assoc_id); 3275 asoc = sctp_id2assoc(sk, assoc_id);
3277 if (!asoc && assoc_id != SCTP_FUTURE_ 3276 if (!asoc && assoc_id != SCTP_FUTURE_ASSOC &&
3278 sctp_style(sk, UDP)) 3277 sctp_style(sk, UDP))
3279 return -EINVAL; 3278 return -EINVAL;
3280 3279
3281 if (val) { 3280 if (val) {
3282 int min_len, max_len; 3281 int min_len, max_len;
3283 __u16 datasize = asoc ? sctp_ 3282 __u16 datasize = asoc ? sctp_datachk_len(&asoc->stream) :
3284 sizeof(struc 3283 sizeof(struct sctp_data_chunk);
3285 3284
3286 min_len = sctp_min_frag_point 3285 min_len = sctp_min_frag_point(sp, datasize);
3287 max_len = SCTP_MAX_CHUNK_LEN 3286 max_len = SCTP_MAX_CHUNK_LEN - datasize;
3288 3287
3289 if (val < min_len || val > ma 3288 if (val < min_len || val > max_len)
3290 return -EINVAL; 3289 return -EINVAL;
3291 } 3290 }
3292 3291
3293 if (asoc) { 3292 if (asoc) {
3294 asoc->user_frag = val; 3293 asoc->user_frag = val;
3295 sctp_assoc_update_frag_point( 3294 sctp_assoc_update_frag_point(asoc);
3296 } else { 3295 } else {
3297 sp->user_frag = val; 3296 sp->user_frag = val;
3298 } 3297 }
3299 3298
3300 return 0; 3299 return 0;
3301 } 3300 }
3302 3301
3303 3302
3304 /* 3303 /*
3305 * 7.1.9 Set Peer Primary Address (SCTP_SET_ 3304 * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR)
3306 * 3305 *
3307 * Requests that the peer mark the enclosed 3306 * Requests that the peer mark the enclosed address as the association
3308 * primary. The enclosed address must be on 3307 * primary. The enclosed address must be one of the association's
3309 * locally bound addresses. The following s 3308 * locally bound addresses. The following structure is used to make a
3310 * set primary request: 3309 * set primary request:
3311 */ 3310 */
3312 static int sctp_setsockopt_peer_primary_addr( 3311 static int sctp_setsockopt_peer_primary_addr(struct sock *sk,
3313 3312 struct sctp_setpeerprim *prim,
3314 3313 unsigned int optlen)
3315 { 3314 {
3316 struct sctp_sock *sp; 3315 struct sctp_sock *sp;
3317 struct sctp_association *asoc = NULL; 3316 struct sctp_association *asoc = NULL;
3318 struct sctp_chunk *chunk; 3317 struct sctp_chunk *chunk;
3319 struct sctp_af *af; 3318 struct sctp_af *af;
3320 int err; 3319 int err;
3321 3320
3322 sp = sctp_sk(sk); 3321 sp = sctp_sk(sk);
3323 3322
3324 if (!sp->ep->asconf_enable) 3323 if (!sp->ep->asconf_enable)
3325 return -EPERM; 3324 return -EPERM;
3326 3325
3327 if (optlen != sizeof(struct sctp_setp 3326 if (optlen != sizeof(struct sctp_setpeerprim))
3328 return -EINVAL; 3327 return -EINVAL;
3329 3328
3330 asoc = sctp_id2assoc(sk, prim->sspp_a 3329 asoc = sctp_id2assoc(sk, prim->sspp_assoc_id);
3331 if (!asoc) 3330 if (!asoc)
3332 return -EINVAL; 3331 return -EINVAL;
3333 3332
3334 if (!asoc->peer.asconf_capable) 3333 if (!asoc->peer.asconf_capable)
3335 return -EPERM; 3334 return -EPERM;
3336 3335
3337 if (asoc->peer.addip_disabled_mask & 3336 if (asoc->peer.addip_disabled_mask & SCTP_PARAM_SET_PRIMARY)
3338 return -EPERM; 3337 return -EPERM;
3339 3338
3340 if (!sctp_state(asoc, ESTABLISHED)) 3339 if (!sctp_state(asoc, ESTABLISHED))
3341 return -ENOTCONN; 3340 return -ENOTCONN;
3342 3341
3343 af = sctp_get_af_specific(prim->sspp_ 3342 af = sctp_get_af_specific(prim->sspp_addr.ss_family);
3344 if (!af) 3343 if (!af)
3345 return -EINVAL; 3344 return -EINVAL;
3346 3345
3347 if (!af->addr_valid((union sctp_addr 3346 if (!af->addr_valid((union sctp_addr *)&prim->sspp_addr, sp, NULL))
3348 return -EADDRNOTAVAIL; 3347 return -EADDRNOTAVAIL;
3349 3348
3350 if (!sctp_assoc_lookup_laddr(asoc, (u 3349 if (!sctp_assoc_lookup_laddr(asoc, (union sctp_addr *)&prim->sspp_addr))
3351 return -EADDRNOTAVAIL; 3350 return -EADDRNOTAVAIL;
3352 3351
3353 /* Allow security module to validate 3352 /* Allow security module to validate address. */
3354 err = security_sctp_bind_connect(sk, 3353 err = security_sctp_bind_connect(sk, SCTP_SET_PEER_PRIMARY_ADDR,
3355 (str 3354 (struct sockaddr *)&prim->sspp_addr,
3356 af-> 3355 af->sockaddr_len);
3357 if (err) 3356 if (err)
3358 return err; 3357 return err;
3359 3358
3360 /* Create an ASCONF chunk with SET_PR 3359 /* Create an ASCONF chunk with SET_PRIMARY parameter */
3361 chunk = sctp_make_asconf_set_prim(aso 3360 chunk = sctp_make_asconf_set_prim(asoc,
3362 (un 3361 (union sctp_addr *)&prim->sspp_addr);
3363 if (!chunk) 3362 if (!chunk)
3364 return -ENOMEM; 3363 return -ENOMEM;
3365 3364
3366 err = sctp_send_asconf(asoc, chunk); 3365 err = sctp_send_asconf(asoc, chunk);
3367 3366
3368 pr_debug("%s: we set peer primary add 3367 pr_debug("%s: we set peer primary addr primitively\n", __func__);
3369 3368
3370 return err; 3369 return err;
3371 } 3370 }
3372 3371
3373 static int sctp_setsockopt_adaptation_layer(s 3372 static int sctp_setsockopt_adaptation_layer(struct sock *sk,
3374 s 3373 struct sctp_setadaptation *adapt,
3375 u 3374 unsigned int optlen)
3376 { 3375 {
3377 if (optlen != sizeof(struct sctp_seta 3376 if (optlen != sizeof(struct sctp_setadaptation))
3378 return -EINVAL; 3377 return -EINVAL;
3379 3378
3380 sctp_sk(sk)->adaptation_ind = adapt-> 3379 sctp_sk(sk)->adaptation_ind = adapt->ssb_adaptation_ind;
3381 3380
3382 return 0; 3381 return 0;
3383 } 3382 }
3384 3383
3385 /* 3384 /*
3386 * 7.1.29. Set or Get the default context (S 3385 * 7.1.29. Set or Get the default context (SCTP_CONTEXT)
3387 * 3386 *
3388 * The context field in the sctp_sndrcvinfo s 3387 * The context field in the sctp_sndrcvinfo structure is normally only
3389 * used when a failed message is retrieved ho 3388 * used when a failed message is retrieved holding the value that was
3390 * sent down on the actual send call. This o 3389 * sent down on the actual send call. This option allows the setting of
3391 * a default context on an association basis 3390 * a default context on an association basis that will be received on
3392 * reading messages from the peer. This is e 3391 * reading messages from the peer. This is especially helpful in the
3393 * one-2-many model for an application to kee 3392 * one-2-many model for an application to keep some reference to an
3394 * internal state machine that is processing 3393 * internal state machine that is processing messages on the
3395 * association. Note that the setting of thi 3394 * association. Note that the setting of this value only effects
3396 * received messages from the peer and does n 3395 * received messages from the peer and does not effect the value that is
3397 * saved with outbound messages. 3396 * saved with outbound messages.
3398 */ 3397 */
3399 static int sctp_setsockopt_context(struct soc 3398 static int sctp_setsockopt_context(struct sock *sk,
3400 struct sct 3399 struct sctp_assoc_value *params,
3401 unsigned i 3400 unsigned int optlen)
3402 { 3401 {
3403 struct sctp_sock *sp = sctp_sk(sk); 3402 struct sctp_sock *sp = sctp_sk(sk);
3404 struct sctp_association *asoc; 3403 struct sctp_association *asoc;
3405 3404
3406 if (optlen != sizeof(struct sctp_asso 3405 if (optlen != sizeof(struct sctp_assoc_value))
3407 return -EINVAL; 3406 return -EINVAL;
3408 3407
3409 asoc = sctp_id2assoc(sk, params->asso 3408 asoc = sctp_id2assoc(sk, params->assoc_id);
3410 if (!asoc && params->assoc_id > SCTP_ 3409 if (!asoc && params->assoc_id > SCTP_ALL_ASSOC &&
3411 sctp_style(sk, UDP)) 3410 sctp_style(sk, UDP))
3412 return -EINVAL; 3411 return -EINVAL;
3413 3412
3414 if (asoc) { 3413 if (asoc) {
3415 asoc->default_rcv_context = p 3414 asoc->default_rcv_context = params->assoc_value;
3416 3415
3417 return 0; 3416 return 0;
3418 } 3417 }
3419 3418
3420 if (sctp_style(sk, TCP)) 3419 if (sctp_style(sk, TCP))
3421 params->assoc_id = SCTP_FUTUR 3420 params->assoc_id = SCTP_FUTURE_ASSOC;
3422 3421
3423 if (params->assoc_id == SCTP_FUTURE_A 3422 if (params->assoc_id == SCTP_FUTURE_ASSOC ||
3424 params->assoc_id == SCTP_ALL_ASSO 3423 params->assoc_id == SCTP_ALL_ASSOC)
3425 sp->default_rcv_context = par 3424 sp->default_rcv_context = params->assoc_value;
3426 3425
3427 if (params->assoc_id == SCTP_CURRENT_ 3426 if (params->assoc_id == SCTP_CURRENT_ASSOC ||
3428 params->assoc_id == SCTP_ALL_ASSO 3427 params->assoc_id == SCTP_ALL_ASSOC)
3429 list_for_each_entry(asoc, &sp 3428 list_for_each_entry(asoc, &sp->ep->asocs, asocs)
3430 asoc->default_rcv_con 3429 asoc->default_rcv_context = params->assoc_value;
3431 3430
3432 return 0; 3431 return 0;
3433 } 3432 }
3434 3433
3435 /* 3434 /*
3436 * 7.1.24. Get or set fragmented interleave 3435 * 7.1.24. Get or set fragmented interleave (SCTP_FRAGMENT_INTERLEAVE)
3437 * 3436 *
3438 * This options will at a minimum specify if 3437 * This options will at a minimum specify if the implementation is doing
3439 * fragmented interleave. Fragmented interle 3438 * fragmented interleave. Fragmented interleave, for a one to many
3440 * socket, is when subsequent calls to receiv 3439 * socket, is when subsequent calls to receive a message may return
3441 * parts of messages from different associati 3440 * parts of messages from different associations. Some implementations
3442 * may allow you to turn this value on or off 3441 * may allow you to turn this value on or off. If so, when turned off,
3443 * no fragment interleave will occur (which w 3442 * no fragment interleave will occur (which will cause a head of line
3444 * blocking amongst multiple associations sha 3443 * blocking amongst multiple associations sharing the same one to many
3445 * socket). When this option is turned on, t 3444 * socket). When this option is turned on, then each receive call may
3446 * come from a different association (thus th 3445 * come from a different association (thus the user must receive data
3447 * with the extended calls (e.g. sctp_recvmsg 3446 * with the extended calls (e.g. sctp_recvmsg) to keep track of which
3448 * association each receive belongs to. 3447 * association each receive belongs to.
3449 * 3448 *
3450 * This option takes a boolean value. A non- 3449 * This option takes a boolean value. A non-zero value indicates that
3451 * fragmented interleave is on. A value of z 3450 * fragmented interleave is on. A value of zero indicates that
3452 * fragmented interleave is off. 3451 * fragmented interleave is off.
3453 * 3452 *
3454 * Note that it is important that an implemen 3453 * Note that it is important that an implementation that allows this
3455 * option to be turned on, have it off by def 3454 * option to be turned on, have it off by default. Otherwise an unaware
3456 * application using the one to many model ma 3455 * application using the one to many model may become confused and act
3457 * incorrectly. 3456 * incorrectly.
3458 */ 3457 */
3459 static int sctp_setsockopt_fragment_interleav 3458 static int sctp_setsockopt_fragment_interleave(struct sock *sk, int *val,
3460 3459 unsigned int optlen)
3461 { 3460 {
3462 if (optlen != sizeof(int)) 3461 if (optlen != sizeof(int))
3463 return -EINVAL; 3462 return -EINVAL;
3464 3463
3465 sctp_sk(sk)->frag_interleave = !!*val 3464 sctp_sk(sk)->frag_interleave = !!*val;
3466 3465
3467 if (!sctp_sk(sk)->frag_interleave) 3466 if (!sctp_sk(sk)->frag_interleave)
3468 sctp_sk(sk)->ep->intl_enable 3467 sctp_sk(sk)->ep->intl_enable = 0;
3469 3468
3470 return 0; 3469 return 0;
3471 } 3470 }
3472 3471
3473 /* 3472 /*
3474 * 8.1.21. Set or Get the SCTP Partial Deliv 3473 * 8.1.21. Set or Get the SCTP Partial Delivery Point
3475 * (SCTP_PARTIAL_DELIVERY_POINT) 3474 * (SCTP_PARTIAL_DELIVERY_POINT)
3476 * 3475 *
3477 * This option will set or get the SCTP parti 3476 * This option will set or get the SCTP partial delivery point. This
3478 * point is the size of a message where the p 3477 * point is the size of a message where the partial delivery API will be
3479 * invoked to help free up rwnd space for the 3478 * invoked to help free up rwnd space for the peer. Setting this to a
3480 * lower value will cause partial deliveries 3479 * lower value will cause partial deliveries to happen more often. The
3481 * calls argument is an integer that sets or 3480 * calls argument is an integer that sets or gets the partial delivery
3482 * point. Note also that the call will fail 3481 * point. Note also that the call will fail if the user attempts to set
3483 * this value larger than the socket receive 3482 * this value larger than the socket receive buffer size.
3484 * 3483 *
3485 * Note that any single message having a leng 3484 * Note that any single message having a length smaller than or equal to
3486 * the SCTP partial delivery point will be de 3485 * the SCTP partial delivery point will be delivered in one single read
3487 * call as long as the user provided buffer i 3486 * call as long as the user provided buffer is large enough to hold the
3488 * message. 3487 * message.
3489 */ 3488 */
3490 static int sctp_setsockopt_partial_delivery_p 3489 static int sctp_setsockopt_partial_delivery_point(struct sock *sk, u32 *val,
3491 3490 unsigned int optlen)
3492 { 3491 {
3493 if (optlen != sizeof(u32)) 3492 if (optlen != sizeof(u32))
3494 return -EINVAL; 3493 return -EINVAL;
3495 3494
3496 /* Note: We double the receive buffer 3495 /* Note: We double the receive buffer from what the user sets
3497 * it to be, also initial rwnd is bas 3496 * it to be, also initial rwnd is based on rcvbuf/2.
3498 */ 3497 */
3499 if (*val > (sk->sk_rcvbuf >> 1)) 3498 if (*val > (sk->sk_rcvbuf >> 1))
3500 return -EINVAL; 3499 return -EINVAL;
3501 3500
3502 sctp_sk(sk)->pd_point = *val; 3501 sctp_sk(sk)->pd_point = *val;
3503 3502
3504 return 0; /* is this the right error 3503 return 0; /* is this the right error code? */
3505 } 3504 }
3506 3505
3507 /* 3506 /*
3508 * 7.1.28. Set or Get the maximum burst (SCT 3507 * 7.1.28. Set or Get the maximum burst (SCTP_MAX_BURST)
3509 * 3508 *
3510 * This option will allow a user to change th 3509 * This option will allow a user to change the maximum burst of packets
3511 * that can be emitted by this association. 3510 * that can be emitted by this association. Note that the default value
3512 * is 4, and some implementations may restric 3511 * is 4, and some implementations may restrict this setting so that it
3513 * can only be lowered. 3512 * can only be lowered.
3514 * 3513 *
3515 * NOTE: This text doesn't seem right. Do th 3514 * NOTE: This text doesn't seem right. Do this on a socket basis with
3516 * future associations inheriting the socket 3515 * future associations inheriting the socket value.
3517 */ 3516 */
3518 static int sctp_setsockopt_maxburst(struct so 3517 static int sctp_setsockopt_maxburst(struct sock *sk,
3519 struct sc 3518 struct sctp_assoc_value *params,
3520 unsigned 3519 unsigned int optlen)
3521 { 3520 {
3522 struct sctp_sock *sp = sctp_sk(sk); 3521 struct sctp_sock *sp = sctp_sk(sk);
3523 struct sctp_association *asoc; 3522 struct sctp_association *asoc;
3524 sctp_assoc_t assoc_id; 3523 sctp_assoc_t assoc_id;
3525 u32 assoc_value; 3524 u32 assoc_value;
3526 3525
3527 if (optlen == sizeof(int)) { 3526 if (optlen == sizeof(int)) {
3528 pr_warn_ratelimited(DEPRECATE 3527 pr_warn_ratelimited(DEPRECATED
3529 "%s (pid 3528 "%s (pid %d) "
3530 "Use of i 3529 "Use of int in max_burst socket option deprecated.\n"
3531 "Use stru 3530 "Use struct sctp_assoc_value instead\n",
3532 current-> 3531 current->comm, task_pid_nr(current));
3533 assoc_id = SCTP_FUTURE_ASSOC; 3532 assoc_id = SCTP_FUTURE_ASSOC;
3534 assoc_value = *((int *)params 3533 assoc_value = *((int *)params);
3535 } else if (optlen == sizeof(struct sc 3534 } else if (optlen == sizeof(struct sctp_assoc_value)) {
3536 assoc_id = params->assoc_id; 3535 assoc_id = params->assoc_id;
3537 assoc_value = params->assoc_v 3536 assoc_value = params->assoc_value;
3538 } else 3537 } else
3539 return -EINVAL; 3538 return -EINVAL;
3540 3539
3541 asoc = sctp_id2assoc(sk, assoc_id); 3540 asoc = sctp_id2assoc(sk, assoc_id);
3542 if (!asoc && assoc_id > SCTP_ALL_ASSO 3541 if (!asoc && assoc_id > SCTP_ALL_ASSOC && sctp_style(sk, UDP))
3543 return -EINVAL; 3542 return -EINVAL;
3544 3543
3545 if (asoc) { 3544 if (asoc) {
3546 asoc->max_burst = assoc_value 3545 asoc->max_burst = assoc_value;
3547 3546
3548 return 0; 3547 return 0;
3549 } 3548 }
3550 3549
3551 if (sctp_style(sk, TCP)) 3550 if (sctp_style(sk, TCP))
3552 assoc_id = SCTP_FUTURE_ASSOC; 3551 assoc_id = SCTP_FUTURE_ASSOC;
3553 3552
3554 if (assoc_id == SCTP_FUTURE_ASSOC || 3553 if (assoc_id == SCTP_FUTURE_ASSOC || assoc_id == SCTP_ALL_ASSOC)
3555 sp->max_burst = assoc_value; 3554 sp->max_burst = assoc_value;
3556 3555
3557 if (assoc_id == SCTP_CURRENT_ASSOC || 3556 if (assoc_id == SCTP_CURRENT_ASSOC || assoc_id == SCTP_ALL_ASSOC)
3558 list_for_each_entry(asoc, &sp 3557 list_for_each_entry(asoc, &sp->ep->asocs, asocs)
3559 asoc->max_burst = ass 3558 asoc->max_burst = assoc_value;
3560 3559
3561 return 0; 3560 return 0;
3562 } 3561 }
3563 3562
3564 /* 3563 /*
3565 * 7.1.18. Add a chunk that must be authenti 3564 * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK)
3566 * 3565 *
3567 * This set option adds a chunk type that the 3566 * This set option adds a chunk type that the user is requesting to be
3568 * received only in an authenticated way. Ch 3567 * received only in an authenticated way. Changes to the list of chunks
3569 * will only effect future associations on th 3568 * will only effect future associations on the socket.
3570 */ 3569 */
3571 static int sctp_setsockopt_auth_chunk(struct 3570 static int sctp_setsockopt_auth_chunk(struct sock *sk,
3572 struct 3571 struct sctp_authchunk *val,
3573 unsigne 3572 unsigned int optlen)
3574 { 3573 {
3575 struct sctp_endpoint *ep = sctp_sk(sk 3574 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
3576 3575
3577 if (!ep->auth_enable) 3576 if (!ep->auth_enable)
3578 return -EACCES; 3577 return -EACCES;
3579 3578
3580 if (optlen != sizeof(struct sctp_auth 3579 if (optlen != sizeof(struct sctp_authchunk))
3581 return -EINVAL; 3580 return -EINVAL;
3582 3581
3583 switch (val->sauth_chunk) { 3582 switch (val->sauth_chunk) {
3584 case SCTP_CID_INIT: 3583 case SCTP_CID_INIT:
3585 case SCTP_CID_INIT_ACK: 3584 case SCTP_CID_INIT_ACK:
3586 case SCTP_CID_SHUTDOWN_COMPLETE: 3585 case SCTP_CID_SHUTDOWN_COMPLETE:
3587 case SCTP_CID_AUTH: 3586 case SCTP_CID_AUTH:
3588 return -EINVAL; 3587 return -EINVAL;
3589 } 3588 }
3590 3589
3591 /* add this chunk id to the endpoint 3590 /* add this chunk id to the endpoint */
3592 return sctp_auth_ep_add_chunkid(ep, v 3591 return sctp_auth_ep_add_chunkid(ep, val->sauth_chunk);
3593 } 3592 }
3594 3593
3595 /* 3594 /*
3596 * 7.1.19. Get or set the list of supported 3595 * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT)
3597 * 3596 *
3598 * This option gets or sets the list of HMAC 3597 * This option gets or sets the list of HMAC algorithms that the local
3599 * endpoint requires the peer to use. 3598 * endpoint requires the peer to use.
3600 */ 3599 */
3601 static int sctp_setsockopt_hmac_ident(struct 3600 static int sctp_setsockopt_hmac_ident(struct sock *sk,
3602 struct 3601 struct sctp_hmacalgo *hmacs,
3603 unsigne 3602 unsigned int optlen)
3604 { 3603 {
3605 struct sctp_endpoint *ep = sctp_sk(sk 3604 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
3606 u32 idents; 3605 u32 idents;
3607 3606
3608 if (!ep->auth_enable) 3607 if (!ep->auth_enable)
3609 return -EACCES; 3608 return -EACCES;
3610 3609
3611 if (optlen < sizeof(struct sctp_hmaca 3610 if (optlen < sizeof(struct sctp_hmacalgo))
3612 return -EINVAL; 3611 return -EINVAL;
3613 optlen = min_t(unsigned int, optlen, 3612 optlen = min_t(unsigned int, optlen, sizeof(struct sctp_hmacalgo) +
3614 3613 SCTP_AUTH_NUM_HMACS * sizeof(u16));
3615 3614
3616 idents = hmacs->shmac_num_idents; 3615 idents = hmacs->shmac_num_idents;
3617 if (idents == 0 || idents > SCTP_AUTH 3616 if (idents == 0 || idents > SCTP_AUTH_NUM_HMACS ||
3618 (idents * sizeof(u16)) > (optlen 3617 (idents * sizeof(u16)) > (optlen - sizeof(struct sctp_hmacalgo)))
3619 return -EINVAL; 3618 return -EINVAL;
3620 3619
3621 return sctp_auth_ep_set_hmacs(ep, hma 3620 return sctp_auth_ep_set_hmacs(ep, hmacs);
3622 } 3621 }
3623 3622
3624 /* 3623 /*
3625 * 7.1.20. Set a shared key (SCTP_AUTH_KEY) 3624 * 7.1.20. Set a shared key (SCTP_AUTH_KEY)
3626 * 3625 *
3627 * This option will set a shared secret key w 3626 * This option will set a shared secret key which is used to build an
3628 * association shared key. 3627 * association shared key.
3629 */ 3628 */
3630 static int sctp_setsockopt_auth_key(struct so 3629 static int sctp_setsockopt_auth_key(struct sock *sk,
3631 struct sc 3630 struct sctp_authkey *authkey,
3632 unsigned 3631 unsigned int optlen)
3633 { 3632 {
3634 struct sctp_endpoint *ep = sctp_sk(sk 3633 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
3635 struct sctp_association *asoc; 3634 struct sctp_association *asoc;
3636 int ret = -EINVAL; 3635 int ret = -EINVAL;
3637 3636
3638 if (optlen <= sizeof(struct sctp_auth 3637 if (optlen <= sizeof(struct sctp_authkey))
3639 return -EINVAL; 3638 return -EINVAL;
3640 /* authkey->sca_keylength is u16, so 3639 /* authkey->sca_keylength is u16, so optlen can't be bigger than
3641 * this. 3640 * this.
3642 */ 3641 */
3643 optlen = min_t(unsigned int, optlen, 3642 optlen = min_t(unsigned int, optlen, USHRT_MAX + sizeof(*authkey));
3644 3643
3645 if (authkey->sca_keylength > optlen - 3644 if (authkey->sca_keylength > optlen - sizeof(*authkey))
3646 goto out; 3645 goto out;
3647 3646
3648 asoc = sctp_id2assoc(sk, authkey->sca 3647 asoc = sctp_id2assoc(sk, authkey->sca_assoc_id);
3649 if (!asoc && authkey->sca_assoc_id > 3648 if (!asoc && authkey->sca_assoc_id > SCTP_ALL_ASSOC &&
3650 sctp_style(sk, UDP)) 3649 sctp_style(sk, UDP))
3651 goto out; 3650 goto out;
3652 3651
3653 if (asoc) { 3652 if (asoc) {
3654 ret = sctp_auth_set_key(ep, a 3653 ret = sctp_auth_set_key(ep, asoc, authkey);
3655 goto out; 3654 goto out;
3656 } 3655 }
3657 3656
3658 if (sctp_style(sk, TCP)) 3657 if (sctp_style(sk, TCP))
3659 authkey->sca_assoc_id = SCTP_ 3658 authkey->sca_assoc_id = SCTP_FUTURE_ASSOC;
3660 3659
3661 if (authkey->sca_assoc_id == SCTP_FUT 3660 if (authkey->sca_assoc_id == SCTP_FUTURE_ASSOC ||
3662 authkey->sca_assoc_id == SCTP_ALL 3661 authkey->sca_assoc_id == SCTP_ALL_ASSOC) {
3663 ret = sctp_auth_set_key(ep, a 3662 ret = sctp_auth_set_key(ep, asoc, authkey);
3664 if (ret) 3663 if (ret)
3665 goto out; 3664 goto out;
3666 } 3665 }
3667 3666
3668 ret = 0; 3667 ret = 0;
3669 3668
3670 if (authkey->sca_assoc_id == SCTP_CUR 3669 if (authkey->sca_assoc_id == SCTP_CURRENT_ASSOC ||
3671 authkey->sca_assoc_id == SCTP_ALL 3670 authkey->sca_assoc_id == SCTP_ALL_ASSOC) {
3672 list_for_each_entry(asoc, &ep 3671 list_for_each_entry(asoc, &ep->asocs, asocs) {
3673 int res = sctp_auth_s 3672 int res = sctp_auth_set_key(ep, asoc, authkey);
3674 3673
3675 if (res && !ret) 3674 if (res && !ret)
3676 ret = res; 3675 ret = res;
3677 } 3676 }
3678 } 3677 }
3679 3678
3680 out: 3679 out:
3681 memzero_explicit(authkey, optlen); 3680 memzero_explicit(authkey, optlen);
3682 return ret; 3681 return ret;
3683 } 3682 }
3684 3683
3685 /* 3684 /*
3686 * 7.1.21. Get or set the active shared key 3685 * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY)
3687 * 3686 *
3688 * This option will get or set the active sha 3687 * This option will get or set the active shared key to be used to build
3689 * the association shared key. 3688 * the association shared key.
3690 */ 3689 */
3691 static int sctp_setsockopt_active_key(struct 3690 static int sctp_setsockopt_active_key(struct sock *sk,
3692 struct 3691 struct sctp_authkeyid *val,
3693 unsigne 3692 unsigned int optlen)
3694 { 3693 {
3695 struct sctp_endpoint *ep = sctp_sk(sk 3694 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
3696 struct sctp_association *asoc; 3695 struct sctp_association *asoc;
3697 int ret = 0; 3696 int ret = 0;
3698 3697
3699 if (optlen != sizeof(struct sctp_auth 3698 if (optlen != sizeof(struct sctp_authkeyid))
3700 return -EINVAL; 3699 return -EINVAL;
3701 3700
3702 asoc = sctp_id2assoc(sk, val->scact_a 3701 asoc = sctp_id2assoc(sk, val->scact_assoc_id);
3703 if (!asoc && val->scact_assoc_id > SC 3702 if (!asoc && val->scact_assoc_id > SCTP_ALL_ASSOC &&
3704 sctp_style(sk, UDP)) 3703 sctp_style(sk, UDP))
3705 return -EINVAL; 3704 return -EINVAL;
3706 3705
3707 if (asoc) 3706 if (asoc)
3708 return sctp_auth_set_active_k 3707 return sctp_auth_set_active_key(ep, asoc, val->scact_keynumber);
3709 3708
3710 if (sctp_style(sk, TCP)) 3709 if (sctp_style(sk, TCP))
3711 val->scact_assoc_id = SCTP_FU 3710 val->scact_assoc_id = SCTP_FUTURE_ASSOC;
3712 3711
3713 if (val->scact_assoc_id == SCTP_FUTUR 3712 if (val->scact_assoc_id == SCTP_FUTURE_ASSOC ||
3714 val->scact_assoc_id == SCTP_ALL_A 3713 val->scact_assoc_id == SCTP_ALL_ASSOC) {
3715 ret = sctp_auth_set_active_ke 3714 ret = sctp_auth_set_active_key(ep, asoc, val->scact_keynumber);
3716 if (ret) 3715 if (ret)
3717 return ret; 3716 return ret;
3718 } 3717 }
3719 3718
3720 if (val->scact_assoc_id == SCTP_CURRE 3719 if (val->scact_assoc_id == SCTP_CURRENT_ASSOC ||
3721 val->scact_assoc_id == SCTP_ALL_A 3720 val->scact_assoc_id == SCTP_ALL_ASSOC) {
3722 list_for_each_entry(asoc, &ep 3721 list_for_each_entry(asoc, &ep->asocs, asocs) {
3723 int res = sctp_auth_s 3722 int res = sctp_auth_set_active_key(ep, asoc,
3724 3723 val->scact_keynumber);
3725 3724
3726 if (res && !ret) 3725 if (res && !ret)
3727 ret = res; 3726 ret = res;
3728 } 3727 }
3729 } 3728 }
3730 3729
3731 return ret; 3730 return ret;
3732 } 3731 }
3733 3732
3734 /* 3733 /*
3735 * 7.1.22. Delete a shared key (SCTP_AUTH_DE 3734 * 7.1.22. Delete a shared key (SCTP_AUTH_DELETE_KEY)
3736 * 3735 *
3737 * This set option will delete a shared secre 3736 * This set option will delete a shared secret key from use.
3738 */ 3737 */
3739 static int sctp_setsockopt_del_key(struct soc 3738 static int sctp_setsockopt_del_key(struct sock *sk,
3740 struct sct 3739 struct sctp_authkeyid *val,
3741 unsigned i 3740 unsigned int optlen)
3742 { 3741 {
3743 struct sctp_endpoint *ep = sctp_sk(sk 3742 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
3744 struct sctp_association *asoc; 3743 struct sctp_association *asoc;
3745 int ret = 0; 3744 int ret = 0;
3746 3745
3747 if (optlen != sizeof(struct sctp_auth 3746 if (optlen != sizeof(struct sctp_authkeyid))
3748 return -EINVAL; 3747 return -EINVAL;
3749 3748
3750 asoc = sctp_id2assoc(sk, val->scact_a 3749 asoc = sctp_id2assoc(sk, val->scact_assoc_id);
3751 if (!asoc && val->scact_assoc_id > SC 3750 if (!asoc && val->scact_assoc_id > SCTP_ALL_ASSOC &&
3752 sctp_style(sk, UDP)) 3751 sctp_style(sk, UDP))
3753 return -EINVAL; 3752 return -EINVAL;
3754 3753
3755 if (asoc) 3754 if (asoc)
3756 return sctp_auth_del_key_id(e 3755 return sctp_auth_del_key_id(ep, asoc, val->scact_keynumber);
3757 3756
3758 if (sctp_style(sk, TCP)) 3757 if (sctp_style(sk, TCP))
3759 val->scact_assoc_id = SCTP_FU 3758 val->scact_assoc_id = SCTP_FUTURE_ASSOC;
3760 3759
3761 if (val->scact_assoc_id == SCTP_FUTUR 3760 if (val->scact_assoc_id == SCTP_FUTURE_ASSOC ||
3762 val->scact_assoc_id == SCTP_ALL_A 3761 val->scact_assoc_id == SCTP_ALL_ASSOC) {
3763 ret = sctp_auth_del_key_id(ep 3762 ret = sctp_auth_del_key_id(ep, asoc, val->scact_keynumber);
3764 if (ret) 3763 if (ret)
3765 return ret; 3764 return ret;
3766 } 3765 }
3767 3766
3768 if (val->scact_assoc_id == SCTP_CURRE 3767 if (val->scact_assoc_id == SCTP_CURRENT_ASSOC ||
3769 val->scact_assoc_id == SCTP_ALL_A 3768 val->scact_assoc_id == SCTP_ALL_ASSOC) {
3770 list_for_each_entry(asoc, &ep 3769 list_for_each_entry(asoc, &ep->asocs, asocs) {
3771 int res = sctp_auth_d 3770 int res = sctp_auth_del_key_id(ep, asoc,
3772 3771 val->scact_keynumber);
3773 3772
3774 if (res && !ret) 3773 if (res && !ret)
3775 ret = res; 3774 ret = res;
3776 } 3775 }
3777 } 3776 }
3778 3777
3779 return ret; 3778 return ret;
3780 } 3779 }
3781 3780
3782 /* 3781 /*
3783 * 8.3.4 Deactivate a Shared Key (SCTP_AUTH_ 3782 * 8.3.4 Deactivate a Shared Key (SCTP_AUTH_DEACTIVATE_KEY)
3784 * 3783 *
3785 * This set option will deactivate a shared s 3784 * This set option will deactivate a shared secret key.
3786 */ 3785 */
3787 static int sctp_setsockopt_deactivate_key(str 3786 static int sctp_setsockopt_deactivate_key(struct sock *sk,
3788 str 3787 struct sctp_authkeyid *val,
3789 uns 3788 unsigned int optlen)
3790 { 3789 {
3791 struct sctp_endpoint *ep = sctp_sk(sk 3790 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
3792 struct sctp_association *asoc; 3791 struct sctp_association *asoc;
3793 int ret = 0; 3792 int ret = 0;
3794 3793
3795 if (optlen != sizeof(struct sctp_auth 3794 if (optlen != sizeof(struct sctp_authkeyid))
3796 return -EINVAL; 3795 return -EINVAL;
3797 3796
3798 asoc = sctp_id2assoc(sk, val->scact_a 3797 asoc = sctp_id2assoc(sk, val->scact_assoc_id);
3799 if (!asoc && val->scact_assoc_id > SC 3798 if (!asoc && val->scact_assoc_id > SCTP_ALL_ASSOC &&
3800 sctp_style(sk, UDP)) 3799 sctp_style(sk, UDP))
3801 return -EINVAL; 3800 return -EINVAL;
3802 3801
3803 if (asoc) 3802 if (asoc)
3804 return sctp_auth_deact_key_id 3803 return sctp_auth_deact_key_id(ep, asoc, val->scact_keynumber);
3805 3804
3806 if (sctp_style(sk, TCP)) 3805 if (sctp_style(sk, TCP))
3807 val->scact_assoc_id = SCTP_FU 3806 val->scact_assoc_id = SCTP_FUTURE_ASSOC;
3808 3807
3809 if (val->scact_assoc_id == SCTP_FUTUR 3808 if (val->scact_assoc_id == SCTP_FUTURE_ASSOC ||
3810 val->scact_assoc_id == SCTP_ALL_A 3809 val->scact_assoc_id == SCTP_ALL_ASSOC) {
3811 ret = sctp_auth_deact_key_id( 3810 ret = sctp_auth_deact_key_id(ep, asoc, val->scact_keynumber);
3812 if (ret) 3811 if (ret)
3813 return ret; 3812 return ret;
3814 } 3813 }
3815 3814
3816 if (val->scact_assoc_id == SCTP_CURRE 3815 if (val->scact_assoc_id == SCTP_CURRENT_ASSOC ||
3817 val->scact_assoc_id == SCTP_ALL_A 3816 val->scact_assoc_id == SCTP_ALL_ASSOC) {
3818 list_for_each_entry(asoc, &ep 3817 list_for_each_entry(asoc, &ep->asocs, asocs) {
3819 int res = sctp_auth_d 3818 int res = sctp_auth_deact_key_id(ep, asoc,
3820 3819 val->scact_keynumber);
3821 3820
3822 if (res && !ret) 3821 if (res && !ret)
3823 ret = res; 3822 ret = res;
3824 } 3823 }
3825 } 3824 }
3826 3825
3827 return ret; 3826 return ret;
3828 } 3827 }
3829 3828
3830 /* 3829 /*
3831 * 8.1.23 SCTP_AUTO_ASCONF 3830 * 8.1.23 SCTP_AUTO_ASCONF
3832 * 3831 *
3833 * This option will enable or disable the use 3832 * This option will enable or disable the use of the automatic generation of
3834 * ASCONF chunks to add and delete addresses 3833 * ASCONF chunks to add and delete addresses to an existing association. Note
3835 * that this option has two caveats namely: a 3834 * that this option has two caveats namely: a) it only affects sockets that
3836 * are bound to all addresses available to th 3835 * are bound to all addresses available to the SCTP stack, and b) the system
3837 * administrator may have an overriding contr 3836 * administrator may have an overriding control that turns the ASCONF feature
3838 * off no matter what setting the socket opti 3837 * off no matter what setting the socket option may have.
3839 * This option expects an integer boolean fla 3838 * This option expects an integer boolean flag, where a non-zero value turns on
3840 * the option, and a zero value turns off the 3839 * the option, and a zero value turns off the option.
3841 * Note. In this implementation, socket opera 3840 * Note. In this implementation, socket operation overrides default parameter
3842 * being set by sysctl as well as FreeBSD imp 3841 * being set by sysctl as well as FreeBSD implementation
3843 */ 3842 */
3844 static int sctp_setsockopt_auto_asconf(struct 3843 static int sctp_setsockopt_auto_asconf(struct sock *sk, int *val,
3845 unsig 3844 unsigned int optlen)
3846 { 3845 {
3847 struct sctp_sock *sp = sctp_sk(sk); 3846 struct sctp_sock *sp = sctp_sk(sk);
3848 3847
3849 if (optlen < sizeof(int)) 3848 if (optlen < sizeof(int))
3850 return -EINVAL; 3849 return -EINVAL;
3851 if (!sctp_is_ep_boundall(sk) && *val) 3850 if (!sctp_is_ep_boundall(sk) && *val)
3852 return -EINVAL; 3851 return -EINVAL;
3853 if ((*val && sp->do_auto_asconf) || ( 3852 if ((*val && sp->do_auto_asconf) || (!*val && !sp->do_auto_asconf))
3854 return 0; 3853 return 0;
3855 3854
3856 spin_lock_bh(&sock_net(sk)->sctp.addr 3855 spin_lock_bh(&sock_net(sk)->sctp.addr_wq_lock);
3857 if (*val == 0 && sp->do_auto_asconf) 3856 if (*val == 0 && sp->do_auto_asconf) {
3858 list_del(&sp->auto_asconf_lis 3857 list_del(&sp->auto_asconf_list);
3859 sp->do_auto_asconf = 0; 3858 sp->do_auto_asconf = 0;
3860 } else if (*val && !sp->do_auto_ascon 3859 } else if (*val && !sp->do_auto_asconf) {
3861 list_add_tail(&sp->auto_ascon 3860 list_add_tail(&sp->auto_asconf_list,
3862 &sock_net(sk)->sctp.auto_ 3861 &sock_net(sk)->sctp.auto_asconf_splist);
3863 sp->do_auto_asconf = 1; 3862 sp->do_auto_asconf = 1;
3864 } 3863 }
3865 spin_unlock_bh(&sock_net(sk)->sctp.ad 3864 spin_unlock_bh(&sock_net(sk)->sctp.addr_wq_lock);
3866 return 0; 3865 return 0;
3867 } 3866 }
3868 3867
3869 /* 3868 /*
3870 * SCTP_PEER_ADDR_THLDS 3869 * SCTP_PEER_ADDR_THLDS
3871 * 3870 *
3872 * This option allows us to alter the partial 3871 * This option allows us to alter the partially failed threshold for one or all
3873 * transports in an association. See Section 3872 * transports in an association. See Section 6.1 of:
3874 * http://www.ietf.org/id/draft-nishida-tsvwg 3873 * http://www.ietf.org/id/draft-nishida-tsvwg-sctp-failover-05.txt
3875 */ 3874 */
3876 static int sctp_setsockopt_paddr_thresholds(s 3875 static int sctp_setsockopt_paddr_thresholds(struct sock *sk,
3877 s 3876 struct sctp_paddrthlds_v2 *val,
3878 u 3877 unsigned int optlen, bool v2)
3879 { 3878 {
3880 struct sctp_transport *trans; 3879 struct sctp_transport *trans;
3881 struct sctp_association *asoc; 3880 struct sctp_association *asoc;
3882 int len; 3881 int len;
3883 3882
3884 len = v2 ? sizeof(*val) : sizeof(stru 3883 len = v2 ? sizeof(*val) : sizeof(struct sctp_paddrthlds);
3885 if (optlen < len) 3884 if (optlen < len)
3886 return -EINVAL; 3885 return -EINVAL;
3887 3886
3888 if (v2 && val->spt_pathpfthld > val-> 3887 if (v2 && val->spt_pathpfthld > val->spt_pathcpthld)
3889 return -EINVAL; 3888 return -EINVAL;
3890 3889
3891 if (!sctp_is_any(sk, (const union sct 3890 if (!sctp_is_any(sk, (const union sctp_addr *)&val->spt_address)) {
3892 trans = sctp_addr_id2transpor 3891 trans = sctp_addr_id2transport(sk, &val->spt_address,
3893 3892 val->spt_assoc_id);
3894 if (!trans) 3893 if (!trans)
3895 return -ENOENT; 3894 return -ENOENT;
3896 3895
3897 if (val->spt_pathmaxrxt) 3896 if (val->spt_pathmaxrxt)
3898 trans->pathmaxrxt = v 3897 trans->pathmaxrxt = val->spt_pathmaxrxt;
3899 if (v2) 3898 if (v2)
3900 trans->ps_retrans = v 3899 trans->ps_retrans = val->spt_pathcpthld;
3901 trans->pf_retrans = val->spt_ 3900 trans->pf_retrans = val->spt_pathpfthld;
3902 3901
3903 return 0; 3902 return 0;
3904 } 3903 }
3905 3904
3906 asoc = sctp_id2assoc(sk, val->spt_ass 3905 asoc = sctp_id2assoc(sk, val->spt_assoc_id);
3907 if (!asoc && val->spt_assoc_id != SCT 3906 if (!asoc && val->spt_assoc_id != SCTP_FUTURE_ASSOC &&
3908 sctp_style(sk, UDP)) 3907 sctp_style(sk, UDP))
3909 return -EINVAL; 3908 return -EINVAL;
3910 3909
3911 if (asoc) { 3910 if (asoc) {
3912 list_for_each_entry(trans, &a 3911 list_for_each_entry(trans, &asoc->peer.transport_addr_list,
3913 transport 3912 transports) {
3914 if (val->spt_pathmaxr 3913 if (val->spt_pathmaxrxt)
3915 trans->pathma 3914 trans->pathmaxrxt = val->spt_pathmaxrxt;
3916 if (v2) 3915 if (v2)
3917 trans->ps_ret 3916 trans->ps_retrans = val->spt_pathcpthld;
3918 trans->pf_retrans = v 3917 trans->pf_retrans = val->spt_pathpfthld;
3919 } 3918 }
3920 3919
3921 if (val->spt_pathmaxrxt) 3920 if (val->spt_pathmaxrxt)
3922 asoc->pathmaxrxt = va 3921 asoc->pathmaxrxt = val->spt_pathmaxrxt;
3923 if (v2) 3922 if (v2)
3924 asoc->ps_retrans = va 3923 asoc->ps_retrans = val->spt_pathcpthld;
3925 asoc->pf_retrans = val->spt_p 3924 asoc->pf_retrans = val->spt_pathpfthld;
3926 } else { 3925 } else {
3927 struct sctp_sock *sp = sctp_s 3926 struct sctp_sock *sp = sctp_sk(sk);
3928 3927
3929 if (val->spt_pathmaxrxt) 3928 if (val->spt_pathmaxrxt)
3930 sp->pathmaxrxt = val- 3929 sp->pathmaxrxt = val->spt_pathmaxrxt;
3931 if (v2) 3930 if (v2)
3932 sp->ps_retrans = val- 3931 sp->ps_retrans = val->spt_pathcpthld;
3933 sp->pf_retrans = val->spt_pat 3932 sp->pf_retrans = val->spt_pathpfthld;
3934 } 3933 }
3935 3934
3936 return 0; 3935 return 0;
3937 } 3936 }
3938 3937
3939 static int sctp_setsockopt_recvrcvinfo(struct 3938 static int sctp_setsockopt_recvrcvinfo(struct sock *sk, int *val,
3940 unsign 3939 unsigned int optlen)
3941 { 3940 {
3942 if (optlen < sizeof(int)) 3941 if (optlen < sizeof(int))
3943 return -EINVAL; 3942 return -EINVAL;
3944 3943
3945 sctp_sk(sk)->recvrcvinfo = (*val == 0 3944 sctp_sk(sk)->recvrcvinfo = (*val == 0) ? 0 : 1;
3946 3945
3947 return 0; 3946 return 0;
3948 } 3947 }
3949 3948
3950 static int sctp_setsockopt_recvnxtinfo(struct 3949 static int sctp_setsockopt_recvnxtinfo(struct sock *sk, int *val,
3951 unsign 3950 unsigned int optlen)
3952 { 3951 {
3953 if (optlen < sizeof(int)) 3952 if (optlen < sizeof(int))
3954 return -EINVAL; 3953 return -EINVAL;
3955 3954
3956 sctp_sk(sk)->recvnxtinfo = (*val == 0 3955 sctp_sk(sk)->recvnxtinfo = (*val == 0) ? 0 : 1;
3957 3956
3958 return 0; 3957 return 0;
3959 } 3958 }
3960 3959
3961 static int sctp_setsockopt_pr_supported(struc 3960 static int sctp_setsockopt_pr_supported(struct sock *sk,
3962 struc 3961 struct sctp_assoc_value *params,
3963 unsig 3962 unsigned int optlen)
3964 { 3963 {
3965 struct sctp_association *asoc; 3964 struct sctp_association *asoc;
3966 3965
3967 if (optlen != sizeof(*params)) 3966 if (optlen != sizeof(*params))
3968 return -EINVAL; 3967 return -EINVAL;
3969 3968
3970 asoc = sctp_id2assoc(sk, params->asso 3969 asoc = sctp_id2assoc(sk, params->assoc_id);
3971 if (!asoc && params->assoc_id != SCTP 3970 if (!asoc && params->assoc_id != SCTP_FUTURE_ASSOC &&
3972 sctp_style(sk, UDP)) 3971 sctp_style(sk, UDP))
3973 return -EINVAL; 3972 return -EINVAL;
3974 3973
3975 sctp_sk(sk)->ep->prsctp_enable = !!pa 3974 sctp_sk(sk)->ep->prsctp_enable = !!params->assoc_value;
3976 3975
3977 return 0; 3976 return 0;
3978 } 3977 }
3979 3978
3980 static int sctp_setsockopt_default_prinfo(str 3979 static int sctp_setsockopt_default_prinfo(struct sock *sk,
3981 str 3980 struct sctp_default_prinfo *info,
3982 uns 3981 unsigned int optlen)
3983 { 3982 {
3984 struct sctp_sock *sp = sctp_sk(sk); 3983 struct sctp_sock *sp = sctp_sk(sk);
3985 struct sctp_association *asoc; 3984 struct sctp_association *asoc;
3986 int retval = -EINVAL; 3985 int retval = -EINVAL;
3987 3986
3988 if (optlen != sizeof(*info)) 3987 if (optlen != sizeof(*info))
3989 goto out; 3988 goto out;
3990 3989
3991 if (info->pr_policy & ~SCTP_PR_SCTP_M 3990 if (info->pr_policy & ~SCTP_PR_SCTP_MASK)
3992 goto out; 3991 goto out;
3993 3992
3994 if (info->pr_policy == SCTP_PR_SCTP_N 3993 if (info->pr_policy == SCTP_PR_SCTP_NONE)
3995 info->pr_value = 0; 3994 info->pr_value = 0;
3996 3995
3997 asoc = sctp_id2assoc(sk, info->pr_ass 3996 asoc = sctp_id2assoc(sk, info->pr_assoc_id);
3998 if (!asoc && info->pr_assoc_id > SCTP 3997 if (!asoc && info->pr_assoc_id > SCTP_ALL_ASSOC &&
3999 sctp_style(sk, UDP)) 3998 sctp_style(sk, UDP))
4000 goto out; 3999 goto out;
4001 4000
4002 retval = 0; 4001 retval = 0;
4003 4002
4004 if (asoc) { 4003 if (asoc) {
4005 SCTP_PR_SET_POLICY(asoc->defa 4004 SCTP_PR_SET_POLICY(asoc->default_flags, info->pr_policy);
4006 asoc->default_timetolive = in 4005 asoc->default_timetolive = info->pr_value;
4007 goto out; 4006 goto out;
4008 } 4007 }
4009 4008
4010 if (sctp_style(sk, TCP)) 4009 if (sctp_style(sk, TCP))
4011 info->pr_assoc_id = SCTP_FUTU 4010 info->pr_assoc_id = SCTP_FUTURE_ASSOC;
4012 4011
4013 if (info->pr_assoc_id == SCTP_FUTURE_ 4012 if (info->pr_assoc_id == SCTP_FUTURE_ASSOC ||
4014 info->pr_assoc_id == SCTP_ALL_ASS 4013 info->pr_assoc_id == SCTP_ALL_ASSOC) {
4015 SCTP_PR_SET_POLICY(sp->defaul 4014 SCTP_PR_SET_POLICY(sp->default_flags, info->pr_policy);
4016 sp->default_timetolive = info 4015 sp->default_timetolive = info->pr_value;
4017 } 4016 }
4018 4017
4019 if (info->pr_assoc_id == SCTP_CURRENT 4018 if (info->pr_assoc_id == SCTP_CURRENT_ASSOC ||
4020 info->pr_assoc_id == SCTP_ALL_ASS 4019 info->pr_assoc_id == SCTP_ALL_ASSOC) {
4021 list_for_each_entry(asoc, &sp 4020 list_for_each_entry(asoc, &sp->ep->asocs, asocs) {
4022 SCTP_PR_SET_POLICY(as 4021 SCTP_PR_SET_POLICY(asoc->default_flags,
4023 in 4022 info->pr_policy);
4024 asoc->default_timetol 4023 asoc->default_timetolive = info->pr_value;
4025 } 4024 }
4026 } 4025 }
4027 4026
4028 out: 4027 out:
4029 return retval; 4028 return retval;
4030 } 4029 }
4031 4030
4032 static int sctp_setsockopt_reconfig_supported 4031 static int sctp_setsockopt_reconfig_supported(struct sock *sk,
4033 4032 struct sctp_assoc_value *params,
4034 4033 unsigned int optlen)
4035 { 4034 {
4036 struct sctp_association *asoc; 4035 struct sctp_association *asoc;
4037 int retval = -EINVAL; 4036 int retval = -EINVAL;
4038 4037
4039 if (optlen != sizeof(*params)) 4038 if (optlen != sizeof(*params))
4040 goto out; 4039 goto out;
4041 4040
4042 asoc = sctp_id2assoc(sk, params->asso 4041 asoc = sctp_id2assoc(sk, params->assoc_id);
4043 if (!asoc && params->assoc_id != SCTP 4042 if (!asoc && params->assoc_id != SCTP_FUTURE_ASSOC &&
4044 sctp_style(sk, UDP)) 4043 sctp_style(sk, UDP))
4045 goto out; 4044 goto out;
4046 4045
4047 sctp_sk(sk)->ep->reconf_enable = !!pa 4046 sctp_sk(sk)->ep->reconf_enable = !!params->assoc_value;
4048 4047
4049 retval = 0; 4048 retval = 0;
4050 4049
4051 out: 4050 out:
4052 return retval; 4051 return retval;
4053 } 4052 }
4054 4053
4055 static int sctp_setsockopt_enable_strreset(st 4054 static int sctp_setsockopt_enable_strreset(struct sock *sk,
4056 st 4055 struct sctp_assoc_value *params,
4057 un 4056 unsigned int optlen)
4058 { 4057 {
4059 struct sctp_endpoint *ep = sctp_sk(sk 4058 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
4060 struct sctp_association *asoc; 4059 struct sctp_association *asoc;
4061 int retval = -EINVAL; 4060 int retval = -EINVAL;
4062 4061
4063 if (optlen != sizeof(*params)) 4062 if (optlen != sizeof(*params))
4064 goto out; 4063 goto out;
4065 4064
4066 if (params->assoc_value & (~SCTP_ENAB 4065 if (params->assoc_value & (~SCTP_ENABLE_STRRESET_MASK))
4067 goto out; 4066 goto out;
4068 4067
4069 asoc = sctp_id2assoc(sk, params->asso 4068 asoc = sctp_id2assoc(sk, params->assoc_id);
4070 if (!asoc && params->assoc_id > SCTP_ 4069 if (!asoc && params->assoc_id > SCTP_ALL_ASSOC &&
4071 sctp_style(sk, UDP)) 4070 sctp_style(sk, UDP))
4072 goto out; 4071 goto out;
4073 4072
4074 retval = 0; 4073 retval = 0;
4075 4074
4076 if (asoc) { 4075 if (asoc) {
4077 asoc->strreset_enable = param 4076 asoc->strreset_enable = params->assoc_value;
4078 goto out; 4077 goto out;
4079 } 4078 }
4080 4079
4081 if (sctp_style(sk, TCP)) 4080 if (sctp_style(sk, TCP))
4082 params->assoc_id = SCTP_FUTUR 4081 params->assoc_id = SCTP_FUTURE_ASSOC;
4083 4082
4084 if (params->assoc_id == SCTP_FUTURE_A 4083 if (params->assoc_id == SCTP_FUTURE_ASSOC ||
4085 params->assoc_id == SCTP_ALL_ASSO 4084 params->assoc_id == SCTP_ALL_ASSOC)
4086 ep->strreset_enable = params- 4085 ep->strreset_enable = params->assoc_value;
4087 4086
4088 if (params->assoc_id == SCTP_CURRENT_ 4087 if (params->assoc_id == SCTP_CURRENT_ASSOC ||
4089 params->assoc_id == SCTP_ALL_ASSO 4088 params->assoc_id == SCTP_ALL_ASSOC)
4090 list_for_each_entry(asoc, &ep 4089 list_for_each_entry(asoc, &ep->asocs, asocs)
4091 asoc->strreset_enable 4090 asoc->strreset_enable = params->assoc_value;
4092 4091
4093 out: 4092 out:
4094 return retval; 4093 return retval;
4095 } 4094 }
4096 4095
4097 static int sctp_setsockopt_reset_streams(stru 4096 static int sctp_setsockopt_reset_streams(struct sock *sk,
4098 stru 4097 struct sctp_reset_streams *params,
4099 unsi 4098 unsigned int optlen)
4100 { 4099 {
4101 struct sctp_association *asoc; 4100 struct sctp_association *asoc;
4102 4101
4103 if (optlen < sizeof(*params)) 4102 if (optlen < sizeof(*params))
4104 return -EINVAL; 4103 return -EINVAL;
4105 /* srs_number_streams is u16, so optl 4104 /* srs_number_streams is u16, so optlen can't be bigger than this. */
4106 optlen = min_t(unsigned int, optlen, 4105 optlen = min_t(unsigned int, optlen, USHRT_MAX +
4107 4106 sizeof(__u16) * sizeof(*params));
4108 4107
4109 if (params->srs_number_streams * size 4108 if (params->srs_number_streams * sizeof(__u16) >
4110 optlen - sizeof(*params)) 4109 optlen - sizeof(*params))
4111 return -EINVAL; 4110 return -EINVAL;
4112 4111
4113 asoc = sctp_id2assoc(sk, params->srs_ 4112 asoc = sctp_id2assoc(sk, params->srs_assoc_id);
4114 if (!asoc) 4113 if (!asoc)
4115 return -EINVAL; 4114 return -EINVAL;
4116 4115
4117 return sctp_send_reset_streams(asoc, 4116 return sctp_send_reset_streams(asoc, params);
4118 } 4117 }
4119 4118
4120 static int sctp_setsockopt_reset_assoc(struct 4119 static int sctp_setsockopt_reset_assoc(struct sock *sk, sctp_assoc_t *associd,
4121 unsign 4120 unsigned int optlen)
4122 { 4121 {
4123 struct sctp_association *asoc; 4122 struct sctp_association *asoc;
4124 4123
4125 if (optlen != sizeof(*associd)) 4124 if (optlen != sizeof(*associd))
4126 return -EINVAL; 4125 return -EINVAL;
4127 4126
4128 asoc = sctp_id2assoc(sk, *associd); 4127 asoc = sctp_id2assoc(sk, *associd);
4129 if (!asoc) 4128 if (!asoc)
4130 return -EINVAL; 4129 return -EINVAL;
4131 4130
4132 return sctp_send_reset_assoc(asoc); 4131 return sctp_send_reset_assoc(asoc);
4133 } 4132 }
4134 4133
4135 static int sctp_setsockopt_add_streams(struct 4134 static int sctp_setsockopt_add_streams(struct sock *sk,
4136 struct 4135 struct sctp_add_streams *params,
4137 unsign 4136 unsigned int optlen)
4138 { 4137 {
4139 struct sctp_association *asoc; 4138 struct sctp_association *asoc;
4140 4139
4141 if (optlen != sizeof(*params)) 4140 if (optlen != sizeof(*params))
4142 return -EINVAL; 4141 return -EINVAL;
4143 4142
4144 asoc = sctp_id2assoc(sk, params->sas_ 4143 asoc = sctp_id2assoc(sk, params->sas_assoc_id);
4145 if (!asoc) 4144 if (!asoc)
4146 return -EINVAL; 4145 return -EINVAL;
4147 4146
4148 return sctp_send_add_streams(asoc, pa 4147 return sctp_send_add_streams(asoc, params);
4149 } 4148 }
4150 4149
4151 static int sctp_setsockopt_scheduler(struct s 4150 static int sctp_setsockopt_scheduler(struct sock *sk,
4152 struct s 4151 struct sctp_assoc_value *params,
4153 unsigned 4152 unsigned int optlen)
4154 { 4153 {
4155 struct sctp_sock *sp = sctp_sk(sk); 4154 struct sctp_sock *sp = sctp_sk(sk);
4156 struct sctp_association *asoc; 4155 struct sctp_association *asoc;
4157 int retval = 0; 4156 int retval = 0;
4158 4157
4159 if (optlen < sizeof(*params)) 4158 if (optlen < sizeof(*params))
4160 return -EINVAL; 4159 return -EINVAL;
4161 4160
4162 if (params->assoc_value > SCTP_SS_MAX 4161 if (params->assoc_value > SCTP_SS_MAX)
4163 return -EINVAL; 4162 return -EINVAL;
4164 4163
4165 asoc = sctp_id2assoc(sk, params->asso 4164 asoc = sctp_id2assoc(sk, params->assoc_id);
4166 if (!asoc && params->assoc_id > SCTP_ 4165 if (!asoc && params->assoc_id > SCTP_ALL_ASSOC &&
4167 sctp_style(sk, UDP)) 4166 sctp_style(sk, UDP))
4168 return -EINVAL; 4167 return -EINVAL;
4169 4168
4170 if (asoc) 4169 if (asoc)
4171 return sctp_sched_set_sched(a 4170 return sctp_sched_set_sched(asoc, params->assoc_value);
4172 4171
4173 if (sctp_style(sk, TCP)) 4172 if (sctp_style(sk, TCP))
4174 params->assoc_id = SCTP_FUTUR 4173 params->assoc_id = SCTP_FUTURE_ASSOC;
4175 4174
4176 if (params->assoc_id == SCTP_FUTURE_A 4175 if (params->assoc_id == SCTP_FUTURE_ASSOC ||
4177 params->assoc_id == SCTP_ALL_ASSO 4176 params->assoc_id == SCTP_ALL_ASSOC)
4178 sp->default_ss = params->asso 4177 sp->default_ss = params->assoc_value;
4179 4178
4180 if (params->assoc_id == SCTP_CURRENT_ 4179 if (params->assoc_id == SCTP_CURRENT_ASSOC ||
4181 params->assoc_id == SCTP_ALL_ASSO 4180 params->assoc_id == SCTP_ALL_ASSOC) {
4182 list_for_each_entry(asoc, &sp 4181 list_for_each_entry(asoc, &sp->ep->asocs, asocs) {
4183 int ret = sctp_sched_ 4182 int ret = sctp_sched_set_sched(asoc,
4184 4183 params->assoc_value);
4185 4184
4186 if (ret && !retval) 4185 if (ret && !retval)
4187 retval = ret; 4186 retval = ret;
4188 } 4187 }
4189 } 4188 }
4190 4189
4191 return retval; 4190 return retval;
4192 } 4191 }
4193 4192
4194 static int sctp_setsockopt_scheduler_value(st 4193 static int sctp_setsockopt_scheduler_value(struct sock *sk,
4195 st 4194 struct sctp_stream_value *params,
4196 un 4195 unsigned int optlen)
4197 { 4196 {
4198 struct sctp_association *asoc; 4197 struct sctp_association *asoc;
4199 int retval = -EINVAL; 4198 int retval = -EINVAL;
4200 4199
4201 if (optlen < sizeof(*params)) 4200 if (optlen < sizeof(*params))
4202 goto out; 4201 goto out;
4203 4202
4204 asoc = sctp_id2assoc(sk, params->asso 4203 asoc = sctp_id2assoc(sk, params->assoc_id);
4205 if (!asoc && params->assoc_id != SCTP 4204 if (!asoc && params->assoc_id != SCTP_CURRENT_ASSOC &&
4206 sctp_style(sk, UDP)) 4205 sctp_style(sk, UDP))
4207 goto out; 4206 goto out;
4208 4207
4209 if (asoc) { 4208 if (asoc) {
4210 retval = sctp_sched_set_value 4209 retval = sctp_sched_set_value(asoc, params->stream_id,
4211 4210 params->stream_value, GFP_KERNEL);
4212 goto out; 4211 goto out;
4213 } 4212 }
4214 4213
4215 retval = 0; 4214 retval = 0;
4216 4215
4217 list_for_each_entry(asoc, &sctp_sk(sk 4216 list_for_each_entry(asoc, &sctp_sk(sk)->ep->asocs, asocs) {
4218 int ret = sctp_sched_set_valu 4217 int ret = sctp_sched_set_value(asoc, params->stream_id,
4219 4218 params->stream_value,
4220 4219 GFP_KERNEL);
4221 if (ret && !retval) /* try to 4220 if (ret && !retval) /* try to return the 1st error. */
4222 retval = ret; 4221 retval = ret;
4223 } 4222 }
4224 4223
4225 out: 4224 out:
4226 return retval; 4225 return retval;
4227 } 4226 }
4228 4227
4229 static int sctp_setsockopt_interleaving_suppo 4228 static int sctp_setsockopt_interleaving_supported(struct sock *sk,
4230 4229 struct sctp_assoc_value *p,
4231 4230 unsigned int optlen)
4232 { 4231 {
4233 struct sctp_sock *sp = sctp_sk(sk); 4232 struct sctp_sock *sp = sctp_sk(sk);
4234 struct sctp_association *asoc; 4233 struct sctp_association *asoc;
4235 4234
4236 if (optlen < sizeof(*p)) 4235 if (optlen < sizeof(*p))
4237 return -EINVAL; 4236 return -EINVAL;
4238 4237
4239 asoc = sctp_id2assoc(sk, p->assoc_id) 4238 asoc = sctp_id2assoc(sk, p->assoc_id);
4240 if (!asoc && p->assoc_id != SCTP_FUTU 4239 if (!asoc && p->assoc_id != SCTP_FUTURE_ASSOC && sctp_style(sk, UDP))
4241 return -EINVAL; 4240 return -EINVAL;
4242 4241
4243 if (!sock_net(sk)->sctp.intl_enable | 4242 if (!sock_net(sk)->sctp.intl_enable || !sp->frag_interleave) {
4244 return -EPERM; 4243 return -EPERM;
4245 } 4244 }
4246 4245
4247 sp->ep->intl_enable = !!p->assoc_valu 4246 sp->ep->intl_enable = !!p->assoc_value;
4248 return 0; 4247 return 0;
4249 } 4248 }
4250 4249
4251 static int sctp_setsockopt_reuse_port(struct 4250 static int sctp_setsockopt_reuse_port(struct sock *sk, int *val,
4252 unsigne 4251 unsigned int optlen)
4253 { 4252 {
4254 if (!sctp_style(sk, TCP)) 4253 if (!sctp_style(sk, TCP))
4255 return -EOPNOTSUPP; 4254 return -EOPNOTSUPP;
4256 4255
4257 if (sctp_sk(sk)->ep->base.bind_addr.p 4256 if (sctp_sk(sk)->ep->base.bind_addr.port)
4258 return -EFAULT; 4257 return -EFAULT;
4259 4258
4260 if (optlen < sizeof(int)) 4259 if (optlen < sizeof(int))
4261 return -EINVAL; 4260 return -EINVAL;
4262 4261
4263 sctp_sk(sk)->reuse = !!*val; 4262 sctp_sk(sk)->reuse = !!*val;
4264 4263
4265 return 0; 4264 return 0;
4266 } 4265 }
4267 4266
4268 static int sctp_assoc_ulpevent_type_set(struc 4267 static int sctp_assoc_ulpevent_type_set(struct sctp_event *param,
4269 struc 4268 struct sctp_association *asoc)
4270 { 4269 {
4271 struct sctp_ulpevent *event; 4270 struct sctp_ulpevent *event;
4272 4271
4273 sctp_ulpevent_type_set(&asoc->subscri 4272 sctp_ulpevent_type_set(&asoc->subscribe, param->se_type, param->se_on);
4274 4273
4275 if (param->se_type == SCTP_SENDER_DRY 4274 if (param->se_type == SCTP_SENDER_DRY_EVENT && param->se_on) {
4276 if (sctp_outq_is_empty(&asoc- 4275 if (sctp_outq_is_empty(&asoc->outqueue)) {
4277 event = sctp_ulpevent 4276 event = sctp_ulpevent_make_sender_dry_event(asoc,
4278 GFP_U 4277 GFP_USER | __GFP_NOWARN);
4279 if (!event) 4278 if (!event)
4280 return -ENOME 4279 return -ENOMEM;
4281 4280
4282 asoc->stream.si->enqu 4281 asoc->stream.si->enqueue_event(&asoc->ulpq, event);
4283 } 4282 }
4284 } 4283 }
4285 4284
4286 return 0; 4285 return 0;
4287 } 4286 }
4288 4287
4289 static int sctp_setsockopt_event(struct sock 4288 static int sctp_setsockopt_event(struct sock *sk, struct sctp_event *param,
4290 unsigned int 4289 unsigned int optlen)
4291 { 4290 {
4292 struct sctp_sock *sp = sctp_sk(sk); 4291 struct sctp_sock *sp = sctp_sk(sk);
4293 struct sctp_association *asoc; 4292 struct sctp_association *asoc;
4294 int retval = 0; 4293 int retval = 0;
4295 4294
4296 if (optlen < sizeof(*param)) 4295 if (optlen < sizeof(*param))
4297 return -EINVAL; 4296 return -EINVAL;
4298 4297
4299 if (param->se_type < SCTP_SN_TYPE_BAS 4298 if (param->se_type < SCTP_SN_TYPE_BASE ||
4300 param->se_type > SCTP_SN_TYPE_MAX 4299 param->se_type > SCTP_SN_TYPE_MAX)
4301 return -EINVAL; 4300 return -EINVAL;
4302 4301
4303 asoc = sctp_id2assoc(sk, param->se_as 4302 asoc = sctp_id2assoc(sk, param->se_assoc_id);
4304 if (!asoc && param->se_assoc_id > SCT 4303 if (!asoc && param->se_assoc_id > SCTP_ALL_ASSOC &&
4305 sctp_style(sk, UDP)) 4304 sctp_style(sk, UDP))
4306 return -EINVAL; 4305 return -EINVAL;
4307 4306
4308 if (asoc) 4307 if (asoc)
4309 return sctp_assoc_ulpevent_ty 4308 return sctp_assoc_ulpevent_type_set(param, asoc);
4310 4309
4311 if (sctp_style(sk, TCP)) 4310 if (sctp_style(sk, TCP))
4312 param->se_assoc_id = SCTP_FUT 4311 param->se_assoc_id = SCTP_FUTURE_ASSOC;
4313 4312
4314 if (param->se_assoc_id == SCTP_FUTURE 4313 if (param->se_assoc_id == SCTP_FUTURE_ASSOC ||
4315 param->se_assoc_id == SCTP_ALL_AS 4314 param->se_assoc_id == SCTP_ALL_ASSOC)
4316 sctp_ulpevent_type_set(&sp->s 4315 sctp_ulpevent_type_set(&sp->subscribe,
4317 param- 4316 param->se_type, param->se_on);
4318 4317
4319 if (param->se_assoc_id == SCTP_CURREN 4318 if (param->se_assoc_id == SCTP_CURRENT_ASSOC ||
4320 param->se_assoc_id == SCTP_ALL_AS 4319 param->se_assoc_id == SCTP_ALL_ASSOC) {
4321 list_for_each_entry(asoc, &sp 4320 list_for_each_entry(asoc, &sp->ep->asocs, asocs) {
4322 int ret = sctp_assoc_ 4321 int ret = sctp_assoc_ulpevent_type_set(param, asoc);
4323 4322
4324 if (ret && !retval) 4323 if (ret && !retval)
4325 retval = ret; 4324 retval = ret;
4326 } 4325 }
4327 } 4326 }
4328 4327
4329 return retval; 4328 return retval;
4330 } 4329 }
4331 4330
4332 static int sctp_setsockopt_asconf_supported(s 4331 static int sctp_setsockopt_asconf_supported(struct sock *sk,
4333 s 4332 struct sctp_assoc_value *params,
4334 u 4333 unsigned int optlen)
4335 { 4334 {
4336 struct sctp_association *asoc; 4335 struct sctp_association *asoc;
4337 struct sctp_endpoint *ep; 4336 struct sctp_endpoint *ep;
4338 int retval = -EINVAL; 4337 int retval = -EINVAL;
4339 4338
4340 if (optlen != sizeof(*params)) 4339 if (optlen != sizeof(*params))
4341 goto out; 4340 goto out;
4342 4341
4343 asoc = sctp_id2assoc(sk, params->asso 4342 asoc = sctp_id2assoc(sk, params->assoc_id);
4344 if (!asoc && params->assoc_id != SCTP 4343 if (!asoc && params->assoc_id != SCTP_FUTURE_ASSOC &&
4345 sctp_style(sk, UDP)) 4344 sctp_style(sk, UDP))
4346 goto out; 4345 goto out;
4347 4346
4348 ep = sctp_sk(sk)->ep; 4347 ep = sctp_sk(sk)->ep;
4349 ep->asconf_enable = !!params->assoc_v 4348 ep->asconf_enable = !!params->assoc_value;
4350 4349
4351 if (ep->asconf_enable && ep->auth_ena 4350 if (ep->asconf_enable && ep->auth_enable) {
4352 sctp_auth_ep_add_chunkid(ep, 4351 sctp_auth_ep_add_chunkid(ep, SCTP_CID_ASCONF);
4353 sctp_auth_ep_add_chunkid(ep, 4352 sctp_auth_ep_add_chunkid(ep, SCTP_CID_ASCONF_ACK);
4354 } 4353 }
4355 4354
4356 retval = 0; 4355 retval = 0;
4357 4356
4358 out: 4357 out:
4359 return retval; 4358 return retval;
4360 } 4359 }
4361 4360
4362 static int sctp_setsockopt_auth_supported(str 4361 static int sctp_setsockopt_auth_supported(struct sock *sk,
4363 str 4362 struct sctp_assoc_value *params,
4364 uns 4363 unsigned int optlen)
4365 { 4364 {
4366 struct sctp_association *asoc; 4365 struct sctp_association *asoc;
4367 struct sctp_endpoint *ep; 4366 struct sctp_endpoint *ep;
4368 int retval = -EINVAL; 4367 int retval = -EINVAL;
4369 4368
4370 if (optlen != sizeof(*params)) 4369 if (optlen != sizeof(*params))
4371 goto out; 4370 goto out;
4372 4371
4373 asoc = sctp_id2assoc(sk, params->asso 4372 asoc = sctp_id2assoc(sk, params->assoc_id);
4374 if (!asoc && params->assoc_id != SCTP 4373 if (!asoc && params->assoc_id != SCTP_FUTURE_ASSOC &&
4375 sctp_style(sk, UDP)) 4374 sctp_style(sk, UDP))
4376 goto out; 4375 goto out;
4377 4376
4378 ep = sctp_sk(sk)->ep; 4377 ep = sctp_sk(sk)->ep;
4379 if (params->assoc_value) { 4378 if (params->assoc_value) {
4380 retval = sctp_auth_init(ep, G 4379 retval = sctp_auth_init(ep, GFP_KERNEL);
4381 if (retval) 4380 if (retval)
4382 goto out; 4381 goto out;
4383 if (ep->asconf_enable) { 4382 if (ep->asconf_enable) {
4384 sctp_auth_ep_add_chun 4383 sctp_auth_ep_add_chunkid(ep, SCTP_CID_ASCONF);
4385 sctp_auth_ep_add_chun 4384 sctp_auth_ep_add_chunkid(ep, SCTP_CID_ASCONF_ACK);
4386 } 4385 }
4387 } 4386 }
4388 4387
4389 ep->auth_enable = !!params->assoc_val 4388 ep->auth_enable = !!params->assoc_value;
4390 retval = 0; 4389 retval = 0;
4391 4390
4392 out: 4391 out:
4393 return retval; 4392 return retval;
4394 } 4393 }
4395 4394
4396 static int sctp_setsockopt_ecn_supported(stru 4395 static int sctp_setsockopt_ecn_supported(struct sock *sk,
4397 stru 4396 struct sctp_assoc_value *params,
4398 unsi 4397 unsigned int optlen)
4399 { 4398 {
4400 struct sctp_association *asoc; 4399 struct sctp_association *asoc;
4401 int retval = -EINVAL; 4400 int retval = -EINVAL;
4402 4401
4403 if (optlen != sizeof(*params)) 4402 if (optlen != sizeof(*params))
4404 goto out; 4403 goto out;
4405 4404
4406 asoc = sctp_id2assoc(sk, params->asso 4405 asoc = sctp_id2assoc(sk, params->assoc_id);
4407 if (!asoc && params->assoc_id != SCTP 4406 if (!asoc && params->assoc_id != SCTP_FUTURE_ASSOC &&
4408 sctp_style(sk, UDP)) 4407 sctp_style(sk, UDP))
4409 goto out; 4408 goto out;
4410 4409
4411 sctp_sk(sk)->ep->ecn_enable = !!param 4410 sctp_sk(sk)->ep->ecn_enable = !!params->assoc_value;
4412 retval = 0; 4411 retval = 0;
4413 4412
4414 out: 4413 out:
4415 return retval; 4414 return retval;
4416 } 4415 }
4417 4416
4418 static int sctp_setsockopt_pf_expose(struct s 4417 static int sctp_setsockopt_pf_expose(struct sock *sk,
4419 struct s 4418 struct sctp_assoc_value *params,
4420 unsigned 4419 unsigned int optlen)
4421 { 4420 {
4422 struct sctp_association *asoc; 4421 struct sctp_association *asoc;
4423 int retval = -EINVAL; 4422 int retval = -EINVAL;
4424 4423
4425 if (optlen != sizeof(*params)) 4424 if (optlen != sizeof(*params))
4426 goto out; 4425 goto out;
4427 4426
4428 if (params->assoc_value > SCTP_PF_EXP 4427 if (params->assoc_value > SCTP_PF_EXPOSE_MAX)
4429 goto out; 4428 goto out;
4430 4429
4431 asoc = sctp_id2assoc(sk, params->asso 4430 asoc = sctp_id2assoc(sk, params->assoc_id);
4432 if (!asoc && params->assoc_id != SCTP 4431 if (!asoc && params->assoc_id != SCTP_FUTURE_ASSOC &&
4433 sctp_style(sk, UDP)) 4432 sctp_style(sk, UDP))
4434 goto out; 4433 goto out;
4435 4434
4436 if (asoc) 4435 if (asoc)
4437 asoc->pf_expose = params->ass 4436 asoc->pf_expose = params->assoc_value;
4438 else 4437 else
4439 sctp_sk(sk)->pf_expose = para 4438 sctp_sk(sk)->pf_expose = params->assoc_value;
4440 retval = 0; 4439 retval = 0;
4441 4440
4442 out: 4441 out:
4443 return retval; 4442 return retval;
4444 } 4443 }
4445 4444
4446 static int sctp_setsockopt_encap_port(struct 4445 static int sctp_setsockopt_encap_port(struct sock *sk,
4447 struct 4446 struct sctp_udpencaps *encap,
4448 unsigne 4447 unsigned int optlen)
4449 { 4448 {
4450 struct sctp_association *asoc; 4449 struct sctp_association *asoc;
4451 struct sctp_transport *t; 4450 struct sctp_transport *t;
4452 __be16 encap_port; 4451 __be16 encap_port;
4453 4452
4454 if (optlen != sizeof(*encap)) 4453 if (optlen != sizeof(*encap))
4455 return -EINVAL; 4454 return -EINVAL;
4456 4455
4457 /* If an address other than INADDR_AN 4456 /* If an address other than INADDR_ANY is specified, and
4458 * no transport is found, then the re 4457 * no transport is found, then the request is invalid.
4459 */ 4458 */
4460 encap_port = (__force __be16)encap->s 4459 encap_port = (__force __be16)encap->sue_port;
4461 if (!sctp_is_any(sk, (union sctp_addr 4460 if (!sctp_is_any(sk, (union sctp_addr *)&encap->sue_address)) {
4462 t = sctp_addr_id2transport(sk 4461 t = sctp_addr_id2transport(sk, &encap->sue_address,
4463 en 4462 encap->sue_assoc_id);
4464 if (!t) 4463 if (!t)
4465 return -EINVAL; 4464 return -EINVAL;
4466 4465
4467 t->encap_port = encap_port; 4466 t->encap_port = encap_port;
4468 return 0; 4467 return 0;
4469 } 4468 }
4470 4469
4471 /* Get association, if assoc_id != SC 4470 /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the
4472 * socket is a one to many style sock 4471 * socket is a one to many style socket, and an association
4473 * was not found, then the id was inv 4472 * was not found, then the id was invalid.
4474 */ 4473 */
4475 asoc = sctp_id2assoc(sk, encap->sue_a 4474 asoc = sctp_id2assoc(sk, encap->sue_assoc_id);
4476 if (!asoc && encap->sue_assoc_id != S 4475 if (!asoc && encap->sue_assoc_id != SCTP_FUTURE_ASSOC &&
4477 sctp_style(sk, UDP)) 4476 sctp_style(sk, UDP))
4478 return -EINVAL; 4477 return -EINVAL;
4479 4478
4480 /* If changes are for association, al 4479 /* If changes are for association, also apply encap_port to
4481 * each transport. 4480 * each transport.
4482 */ 4481 */
4483 if (asoc) { 4482 if (asoc) {
4484 list_for_each_entry(t, &asoc- 4483 list_for_each_entry(t, &asoc->peer.transport_addr_list,
4485 transport 4484 transports)
4486 t->encap_port = encap 4485 t->encap_port = encap_port;
4487 4486
4488 asoc->encap_port = encap_port 4487 asoc->encap_port = encap_port;
4489 return 0; 4488 return 0;
4490 } 4489 }
4491 4490
4492 sctp_sk(sk)->encap_port = encap_port; 4491 sctp_sk(sk)->encap_port = encap_port;
4493 return 0; 4492 return 0;
4494 } 4493 }
4495 4494
4496 static int sctp_setsockopt_probe_interval(str 4495 static int sctp_setsockopt_probe_interval(struct sock *sk,
4497 str 4496 struct sctp_probeinterval *params,
4498 uns 4497 unsigned int optlen)
4499 { 4498 {
4500 struct sctp_association *asoc; 4499 struct sctp_association *asoc;
4501 struct sctp_transport *t; 4500 struct sctp_transport *t;
4502 __u32 probe_interval; 4501 __u32 probe_interval;
4503 4502
4504 if (optlen != sizeof(*params)) 4503 if (optlen != sizeof(*params))
4505 return -EINVAL; 4504 return -EINVAL;
4506 4505
4507 probe_interval = params->spi_interval 4506 probe_interval = params->spi_interval;
4508 if (probe_interval && probe_interval 4507 if (probe_interval && probe_interval < SCTP_PROBE_TIMER_MIN)
4509 return -EINVAL; 4508 return -EINVAL;
4510 4509
4511 /* If an address other than INADDR_AN 4510 /* If an address other than INADDR_ANY is specified, and
4512 * no transport is found, then the re 4511 * no transport is found, then the request is invalid.
4513 */ 4512 */
4514 if (!sctp_is_any(sk, (union sctp_addr 4513 if (!sctp_is_any(sk, (union sctp_addr *)¶ms->spi_address)) {
4515 t = sctp_addr_id2transport(sk 4514 t = sctp_addr_id2transport(sk, ¶ms->spi_address,
4516 pa 4515 params->spi_assoc_id);
4517 if (!t) 4516 if (!t)
4518 return -EINVAL; 4517 return -EINVAL;
4519 4518
4520 t->probe_interval = msecs_to_ 4519 t->probe_interval = msecs_to_jiffies(probe_interval);
4521 sctp_transport_pl_reset(t); 4520 sctp_transport_pl_reset(t);
4522 return 0; 4521 return 0;
4523 } 4522 }
4524 4523
4525 /* Get association, if assoc_id != SC 4524 /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the
4526 * socket is a one to many style sock 4525 * socket is a one to many style socket, and an association
4527 * was not found, then the id was inv 4526 * was not found, then the id was invalid.
4528 */ 4527 */
4529 asoc = sctp_id2assoc(sk, params->spi_ 4528 asoc = sctp_id2assoc(sk, params->spi_assoc_id);
4530 if (!asoc && params->spi_assoc_id != 4529 if (!asoc && params->spi_assoc_id != SCTP_FUTURE_ASSOC &&
4531 sctp_style(sk, UDP)) 4530 sctp_style(sk, UDP))
4532 return -EINVAL; 4531 return -EINVAL;
4533 4532
4534 /* If changes are for association, al 4533 /* If changes are for association, also apply probe_interval to
4535 * each transport. 4534 * each transport.
4536 */ 4535 */
4537 if (asoc) { 4536 if (asoc) {
4538 list_for_each_entry(t, &asoc- 4537 list_for_each_entry(t, &asoc->peer.transport_addr_list, transports) {
4539 t->probe_interval = m 4538 t->probe_interval = msecs_to_jiffies(probe_interval);
4540 sctp_transport_pl_res 4539 sctp_transport_pl_reset(t);
4541 } 4540 }
4542 4541
4543 asoc->probe_interval = msecs_ 4542 asoc->probe_interval = msecs_to_jiffies(probe_interval);
4544 return 0; 4543 return 0;
4545 } 4544 }
4546 4545
4547 sctp_sk(sk)->probe_interval = probe_i 4546 sctp_sk(sk)->probe_interval = probe_interval;
4548 return 0; 4547 return 0;
4549 } 4548 }
4550 4549
4551 /* API 6.2 setsockopt(), getsockopt() 4550 /* API 6.2 setsockopt(), getsockopt()
4552 * 4551 *
4553 * Applications use setsockopt() and getsocko 4552 * Applications use setsockopt() and getsockopt() to set or retrieve
4554 * socket options. Socket options are used t 4553 * socket options. Socket options are used to change the default
4555 * behavior of sockets calls. They are descr 4554 * behavior of sockets calls. They are described in Section 7.
4556 * 4555 *
4557 * The syntax is: 4556 * The syntax is:
4558 * 4557 *
4559 * ret = getsockopt(int sd, int level, int 4558 * ret = getsockopt(int sd, int level, int optname, void __user *optval,
4560 * int __user *optlen); 4559 * int __user *optlen);
4561 * ret = setsockopt(int sd, int level, int 4560 * ret = setsockopt(int sd, int level, int optname, const void __user *optval,
4562 * int optlen); 4561 * int optlen);
4563 * 4562 *
4564 * sd - the socket descript. 4563 * sd - the socket descript.
4565 * level - set to IPPROTO_SCTP for all SC 4564 * level - set to IPPROTO_SCTP for all SCTP options.
4566 * optname - the option name. 4565 * optname - the option name.
4567 * optval - the buffer to store the value 4566 * optval - the buffer to store the value of the option.
4568 * optlen - the size of the buffer. 4567 * optlen - the size of the buffer.
4569 */ 4568 */
4570 static int sctp_setsockopt(struct sock *sk, i 4569 static int sctp_setsockopt(struct sock *sk, int level, int optname,
4571 sockptr_t optval, 4570 sockptr_t optval, unsigned int optlen)
4572 { 4571 {
4573 void *kopt = NULL; 4572 void *kopt = NULL;
4574 int retval = 0; 4573 int retval = 0;
4575 4574
4576 pr_debug("%s: sk:%p, optname:%d\n", _ 4575 pr_debug("%s: sk:%p, optname:%d\n", __func__, sk, optname);
4577 4576
4578 /* I can hardly begin to describe how 4577 /* I can hardly begin to describe how wrong this is. This is
4579 * so broken as to be worse than usel 4578 * so broken as to be worse than useless. The API draft
4580 * REALLY is NOT helpful here... I a 4579 * REALLY is NOT helpful here... I am not convinced that the
4581 * semantics of setsockopt() with a l 4580 * semantics of setsockopt() with a level OTHER THAN SOL_SCTP
4582 * are at all well-founded. 4581 * are at all well-founded.
4583 */ 4582 */
4584 if (level != SOL_SCTP) { 4583 if (level != SOL_SCTP) {
4585 struct sctp_af *af = sctp_sk( 4584 struct sctp_af *af = sctp_sk(sk)->pf->af;
4586 4585
4587 return af->setsockopt(sk, lev 4586 return af->setsockopt(sk, level, optname, optval, optlen);
4588 } 4587 }
4589 4588
4590 if (optlen > 0) { 4589 if (optlen > 0) {
4591 /* Trim it to the biggest siz 4590 /* Trim it to the biggest size sctp sockopt may need if necessary */
4592 optlen = min_t(unsigned int, 4591 optlen = min_t(unsigned int, optlen,
4593 PAGE_ALIGN(USH 4592 PAGE_ALIGN(USHRT_MAX +
4594 siz 4593 sizeof(__u16) * sizeof(struct sctp_reset_streams)));
4595 kopt = memdup_sockptr(optval, 4594 kopt = memdup_sockptr(optval, optlen);
4596 if (IS_ERR(kopt)) 4595 if (IS_ERR(kopt))
4597 return PTR_ERR(kopt); 4596 return PTR_ERR(kopt);
4598 } 4597 }
4599 4598
4600 lock_sock(sk); 4599 lock_sock(sk);
4601 4600
4602 switch (optname) { 4601 switch (optname) {
4603 case SCTP_SOCKOPT_BINDX_ADD: 4602 case SCTP_SOCKOPT_BINDX_ADD:
4604 /* 'optlen' is the size of th 4603 /* 'optlen' is the size of the addresses buffer. */
4605 retval = sctp_setsockopt_bind 4604 retval = sctp_setsockopt_bindx(sk, kopt, optlen,
4606 4605 SCTP_BINDX_ADD_ADDR);
4607 break; 4606 break;
4608 4607
4609 case SCTP_SOCKOPT_BINDX_REM: 4608 case SCTP_SOCKOPT_BINDX_REM:
4610 /* 'optlen' is the size of th 4609 /* 'optlen' is the size of the addresses buffer. */
4611 retval = sctp_setsockopt_bind 4610 retval = sctp_setsockopt_bindx(sk, kopt, optlen,
4612 4611 SCTP_BINDX_REM_ADDR);
4613 break; 4612 break;
4614 4613
4615 case SCTP_SOCKOPT_CONNECTX_OLD: 4614 case SCTP_SOCKOPT_CONNECTX_OLD:
4616 /* 'optlen' is the size of th 4615 /* 'optlen' is the size of the addresses buffer. */
4617 retval = sctp_setsockopt_conn 4616 retval = sctp_setsockopt_connectx_old(sk, kopt, optlen);
4618 break; 4617 break;
4619 4618
4620 case SCTP_SOCKOPT_CONNECTX: 4619 case SCTP_SOCKOPT_CONNECTX:
4621 /* 'optlen' is the size of th 4620 /* 'optlen' is the size of the addresses buffer. */
4622 retval = sctp_setsockopt_conn 4621 retval = sctp_setsockopt_connectx(sk, kopt, optlen);
4623 break; 4622 break;
4624 4623
4625 case SCTP_DISABLE_FRAGMENTS: 4624 case SCTP_DISABLE_FRAGMENTS:
4626 retval = sctp_setsockopt_disa 4625 retval = sctp_setsockopt_disable_fragments(sk, kopt, optlen);
4627 break; 4626 break;
4628 4627
4629 case SCTP_EVENTS: 4628 case SCTP_EVENTS:
4630 retval = sctp_setsockopt_even 4629 retval = sctp_setsockopt_events(sk, kopt, optlen);
4631 break; 4630 break;
4632 4631
4633 case SCTP_AUTOCLOSE: 4632 case SCTP_AUTOCLOSE:
4634 retval = sctp_setsockopt_auto 4633 retval = sctp_setsockopt_autoclose(sk, kopt, optlen);
4635 break; 4634 break;
4636 4635
4637 case SCTP_PEER_ADDR_PARAMS: 4636 case SCTP_PEER_ADDR_PARAMS:
4638 retval = sctp_setsockopt_peer 4637 retval = sctp_setsockopt_peer_addr_params(sk, kopt, optlen);
4639 break; 4638 break;
4640 4639
4641 case SCTP_DELAYED_SACK: 4640 case SCTP_DELAYED_SACK:
4642 retval = sctp_setsockopt_dela 4641 retval = sctp_setsockopt_delayed_ack(sk, kopt, optlen);
4643 break; 4642 break;
4644 case SCTP_PARTIAL_DELIVERY_POINT: 4643 case SCTP_PARTIAL_DELIVERY_POINT:
4645 retval = sctp_setsockopt_part 4644 retval = sctp_setsockopt_partial_delivery_point(sk, kopt, optlen);
4646 break; 4645 break;
4647 4646
4648 case SCTP_INITMSG: 4647 case SCTP_INITMSG:
4649 retval = sctp_setsockopt_init 4648 retval = sctp_setsockopt_initmsg(sk, kopt, optlen);
4650 break; 4649 break;
4651 case SCTP_DEFAULT_SEND_PARAM: 4650 case SCTP_DEFAULT_SEND_PARAM:
4652 retval = sctp_setsockopt_defa 4651 retval = sctp_setsockopt_default_send_param(sk, kopt, optlen);
4653 break; 4652 break;
4654 case SCTP_DEFAULT_SNDINFO: 4653 case SCTP_DEFAULT_SNDINFO:
4655 retval = sctp_setsockopt_defa 4654 retval = sctp_setsockopt_default_sndinfo(sk, kopt, optlen);
4656 break; 4655 break;
4657 case SCTP_PRIMARY_ADDR: 4656 case SCTP_PRIMARY_ADDR:
4658 retval = sctp_setsockopt_prim 4657 retval = sctp_setsockopt_primary_addr(sk, kopt, optlen);
4659 break; 4658 break;
4660 case SCTP_SET_PEER_PRIMARY_ADDR: 4659 case SCTP_SET_PEER_PRIMARY_ADDR:
4661 retval = sctp_setsockopt_peer 4660 retval = sctp_setsockopt_peer_primary_addr(sk, kopt, optlen);
4662 break; 4661 break;
4663 case SCTP_NODELAY: 4662 case SCTP_NODELAY:
4664 retval = sctp_setsockopt_node 4663 retval = sctp_setsockopt_nodelay(sk, kopt, optlen);
4665 break; 4664 break;
4666 case SCTP_RTOINFO: 4665 case SCTP_RTOINFO:
4667 retval = sctp_setsockopt_rtoi 4666 retval = sctp_setsockopt_rtoinfo(sk, kopt, optlen);
4668 break; 4667 break;
4669 case SCTP_ASSOCINFO: 4668 case SCTP_ASSOCINFO:
4670 retval = sctp_setsockopt_asso 4669 retval = sctp_setsockopt_associnfo(sk, kopt, optlen);
4671 break; 4670 break;
4672 case SCTP_I_WANT_MAPPED_V4_ADDR: 4671 case SCTP_I_WANT_MAPPED_V4_ADDR:
4673 retval = sctp_setsockopt_mapp 4672 retval = sctp_setsockopt_mappedv4(sk, kopt, optlen);
4674 break; 4673 break;
4675 case SCTP_MAXSEG: 4674 case SCTP_MAXSEG:
4676 retval = sctp_setsockopt_maxs 4675 retval = sctp_setsockopt_maxseg(sk, kopt, optlen);
4677 break; 4676 break;
4678 case SCTP_ADAPTATION_LAYER: 4677 case SCTP_ADAPTATION_LAYER:
4679 retval = sctp_setsockopt_adap 4678 retval = sctp_setsockopt_adaptation_layer(sk, kopt, optlen);
4680 break; 4679 break;
4681 case SCTP_CONTEXT: 4680 case SCTP_CONTEXT:
4682 retval = sctp_setsockopt_cont 4681 retval = sctp_setsockopt_context(sk, kopt, optlen);
4683 break; 4682 break;
4684 case SCTP_FRAGMENT_INTERLEAVE: 4683 case SCTP_FRAGMENT_INTERLEAVE:
4685 retval = sctp_setsockopt_frag 4684 retval = sctp_setsockopt_fragment_interleave(sk, kopt, optlen);
4686 break; 4685 break;
4687 case SCTP_MAX_BURST: 4686 case SCTP_MAX_BURST:
4688 retval = sctp_setsockopt_maxb 4687 retval = sctp_setsockopt_maxburst(sk, kopt, optlen);
4689 break; 4688 break;
4690 case SCTP_AUTH_CHUNK: 4689 case SCTP_AUTH_CHUNK:
4691 retval = sctp_setsockopt_auth 4690 retval = sctp_setsockopt_auth_chunk(sk, kopt, optlen);
4692 break; 4691 break;
4693 case SCTP_HMAC_IDENT: 4692 case SCTP_HMAC_IDENT:
4694 retval = sctp_setsockopt_hmac 4693 retval = sctp_setsockopt_hmac_ident(sk, kopt, optlen);
4695 break; 4694 break;
4696 case SCTP_AUTH_KEY: 4695 case SCTP_AUTH_KEY:
4697 retval = sctp_setsockopt_auth 4696 retval = sctp_setsockopt_auth_key(sk, kopt, optlen);
4698 break; 4697 break;
4699 case SCTP_AUTH_ACTIVE_KEY: 4698 case SCTP_AUTH_ACTIVE_KEY:
4700 retval = sctp_setsockopt_acti 4699 retval = sctp_setsockopt_active_key(sk, kopt, optlen);
4701 break; 4700 break;
4702 case SCTP_AUTH_DELETE_KEY: 4701 case SCTP_AUTH_DELETE_KEY:
4703 retval = sctp_setsockopt_del_ 4702 retval = sctp_setsockopt_del_key(sk, kopt, optlen);
4704 break; 4703 break;
4705 case SCTP_AUTH_DEACTIVATE_KEY: 4704 case SCTP_AUTH_DEACTIVATE_KEY:
4706 retval = sctp_setsockopt_deac 4705 retval = sctp_setsockopt_deactivate_key(sk, kopt, optlen);
4707 break; 4706 break;
4708 case SCTP_AUTO_ASCONF: 4707 case SCTP_AUTO_ASCONF:
4709 retval = sctp_setsockopt_auto 4708 retval = sctp_setsockopt_auto_asconf(sk, kopt, optlen);
4710 break; 4709 break;
4711 case SCTP_PEER_ADDR_THLDS: 4710 case SCTP_PEER_ADDR_THLDS:
4712 retval = sctp_setsockopt_padd 4711 retval = sctp_setsockopt_paddr_thresholds(sk, kopt, optlen,
4713 4712 false);
4714 break; 4713 break;
4715 case SCTP_PEER_ADDR_THLDS_V2: 4714 case SCTP_PEER_ADDR_THLDS_V2:
4716 retval = sctp_setsockopt_padd 4715 retval = sctp_setsockopt_paddr_thresholds(sk, kopt, optlen,
4717 4716 true);
4718 break; 4717 break;
4719 case SCTP_RECVRCVINFO: 4718 case SCTP_RECVRCVINFO:
4720 retval = sctp_setsockopt_recv 4719 retval = sctp_setsockopt_recvrcvinfo(sk, kopt, optlen);
4721 break; 4720 break;
4722 case SCTP_RECVNXTINFO: 4721 case SCTP_RECVNXTINFO:
4723 retval = sctp_setsockopt_recv 4722 retval = sctp_setsockopt_recvnxtinfo(sk, kopt, optlen);
4724 break; 4723 break;
4725 case SCTP_PR_SUPPORTED: 4724 case SCTP_PR_SUPPORTED:
4726 retval = sctp_setsockopt_pr_s 4725 retval = sctp_setsockopt_pr_supported(sk, kopt, optlen);
4727 break; 4726 break;
4728 case SCTP_DEFAULT_PRINFO: 4727 case SCTP_DEFAULT_PRINFO:
4729 retval = sctp_setsockopt_defa 4728 retval = sctp_setsockopt_default_prinfo(sk, kopt, optlen);
4730 break; 4729 break;
4731 case SCTP_RECONFIG_SUPPORTED: 4730 case SCTP_RECONFIG_SUPPORTED:
4732 retval = sctp_setsockopt_reco 4731 retval = sctp_setsockopt_reconfig_supported(sk, kopt, optlen);
4733 break; 4732 break;
4734 case SCTP_ENABLE_STREAM_RESET: 4733 case SCTP_ENABLE_STREAM_RESET:
4735 retval = sctp_setsockopt_enab 4734 retval = sctp_setsockopt_enable_strreset(sk, kopt, optlen);
4736 break; 4735 break;
4737 case SCTP_RESET_STREAMS: 4736 case SCTP_RESET_STREAMS:
4738 retval = sctp_setsockopt_rese 4737 retval = sctp_setsockopt_reset_streams(sk, kopt, optlen);
4739 break; 4738 break;
4740 case SCTP_RESET_ASSOC: 4739 case SCTP_RESET_ASSOC:
4741 retval = sctp_setsockopt_rese 4740 retval = sctp_setsockopt_reset_assoc(sk, kopt, optlen);
4742 break; 4741 break;
4743 case SCTP_ADD_STREAMS: 4742 case SCTP_ADD_STREAMS:
4744 retval = sctp_setsockopt_add_ 4743 retval = sctp_setsockopt_add_streams(sk, kopt, optlen);
4745 break; 4744 break;
4746 case SCTP_STREAM_SCHEDULER: 4745 case SCTP_STREAM_SCHEDULER:
4747 retval = sctp_setsockopt_sche 4746 retval = sctp_setsockopt_scheduler(sk, kopt, optlen);
4748 break; 4747 break;
4749 case SCTP_STREAM_SCHEDULER_VALUE: 4748 case SCTP_STREAM_SCHEDULER_VALUE:
4750 retval = sctp_setsockopt_sche 4749 retval = sctp_setsockopt_scheduler_value(sk, kopt, optlen);
4751 break; 4750 break;
4752 case SCTP_INTERLEAVING_SUPPORTED: 4751 case SCTP_INTERLEAVING_SUPPORTED:
4753 retval = sctp_setsockopt_inte 4752 retval = sctp_setsockopt_interleaving_supported(sk, kopt,
4754 4753 optlen);
4755 break; 4754 break;
4756 case SCTP_REUSE_PORT: 4755 case SCTP_REUSE_PORT:
4757 retval = sctp_setsockopt_reus 4756 retval = sctp_setsockopt_reuse_port(sk, kopt, optlen);
4758 break; 4757 break;
4759 case SCTP_EVENT: 4758 case SCTP_EVENT:
4760 retval = sctp_setsockopt_even 4759 retval = sctp_setsockopt_event(sk, kopt, optlen);
4761 break; 4760 break;
4762 case SCTP_ASCONF_SUPPORTED: 4761 case SCTP_ASCONF_SUPPORTED:
4763 retval = sctp_setsockopt_asco 4762 retval = sctp_setsockopt_asconf_supported(sk, kopt, optlen);
4764 break; 4763 break;
4765 case SCTP_AUTH_SUPPORTED: 4764 case SCTP_AUTH_SUPPORTED:
4766 retval = sctp_setsockopt_auth 4765 retval = sctp_setsockopt_auth_supported(sk, kopt, optlen);
4767 break; 4766 break;
4768 case SCTP_ECN_SUPPORTED: 4767 case SCTP_ECN_SUPPORTED:
4769 retval = sctp_setsockopt_ecn_ 4768 retval = sctp_setsockopt_ecn_supported(sk, kopt, optlen);
4770 break; 4769 break;
4771 case SCTP_EXPOSE_POTENTIALLY_FAILED_S 4770 case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE:
4772 retval = sctp_setsockopt_pf_e 4771 retval = sctp_setsockopt_pf_expose(sk, kopt, optlen);
4773 break; 4772 break;
4774 case SCTP_REMOTE_UDP_ENCAPS_PORT: 4773 case SCTP_REMOTE_UDP_ENCAPS_PORT:
4775 retval = sctp_setsockopt_enca 4774 retval = sctp_setsockopt_encap_port(sk, kopt, optlen);
4776 break; 4775 break;
4777 case SCTP_PLPMTUD_PROBE_INTERVAL: 4776 case SCTP_PLPMTUD_PROBE_INTERVAL:
4778 retval = sctp_setsockopt_prob 4777 retval = sctp_setsockopt_probe_interval(sk, kopt, optlen);
4779 break; 4778 break;
4780 default: 4779 default:
4781 retval = -ENOPROTOOPT; 4780 retval = -ENOPROTOOPT;
4782 break; 4781 break;
4783 } 4782 }
4784 4783
4785 release_sock(sk); 4784 release_sock(sk);
4786 kfree(kopt); 4785 kfree(kopt);
4787 return retval; 4786 return retval;
4788 } 4787 }
4789 4788
4790 /* API 3.1.6 connect() - UDP Style Syntax 4789 /* API 3.1.6 connect() - UDP Style Syntax
4791 * 4790 *
4792 * An application may use the connect() call 4791 * An application may use the connect() call in the UDP model to initiate an
4793 * association without sending data. 4792 * association without sending data.
4794 * 4793 *
4795 * The syntax is: 4794 * The syntax is:
4796 * 4795 *
4797 * ret = connect(int sd, const struct sockadd 4796 * ret = connect(int sd, const struct sockaddr *nam, socklen_t len);
4798 * 4797 *
4799 * sd: the socket descriptor to have a new as 4798 * sd: the socket descriptor to have a new association added to.
4800 * 4799 *
4801 * nam: the address structure (either struct 4800 * nam: the address structure (either struct sockaddr_in or struct
4802 * sockaddr_in6 defined in RFC2553 [7]). 4801 * sockaddr_in6 defined in RFC2553 [7]).
4803 * 4802 *
4804 * len: the size of the address. 4803 * len: the size of the address.
4805 */ 4804 */
4806 static int sctp_connect(struct sock *sk, stru 4805 static int sctp_connect(struct sock *sk, struct sockaddr *addr,
4807 int addr_len, int fla 4806 int addr_len, int flags)
4808 { 4807 {
4809 struct sctp_af *af; 4808 struct sctp_af *af;
4810 int err = -EINVAL; 4809 int err = -EINVAL;
4811 4810
4812 lock_sock(sk); 4811 lock_sock(sk);
4813 pr_debug("%s: sk:%p, sockaddr:%p, add 4812 pr_debug("%s: sk:%p, sockaddr:%p, addr_len:%d\n", __func__, sk,
4814 addr, addr_len); 4813 addr, addr_len);
4815 4814
4816 /* Validate addr_len before calling c 4815 /* Validate addr_len before calling common connect/connectx routine. */
4817 af = sctp_get_af_specific(addr->sa_fa 4816 af = sctp_get_af_specific(addr->sa_family);
4818 if (af && addr_len >= af->sockaddr_le 4817 if (af && addr_len >= af->sockaddr_len)
4819 err = __sctp_connect(sk, addr 4818 err = __sctp_connect(sk, addr, af->sockaddr_len, flags, NULL);
4820 4819
4821 release_sock(sk); 4820 release_sock(sk);
4822 return err; 4821 return err;
4823 } 4822 }
4824 4823
4825 int sctp_inet_connect(struct socket *sock, st 4824 int sctp_inet_connect(struct socket *sock, struct sockaddr *uaddr,
4826 int addr_len, int flags 4825 int addr_len, int flags)
4827 { 4826 {
4828 if (addr_len < sizeof(uaddr->sa_famil 4827 if (addr_len < sizeof(uaddr->sa_family))
4829 return -EINVAL; 4828 return -EINVAL;
4830 4829
4831 if (uaddr->sa_family == AF_UNSPEC) 4830 if (uaddr->sa_family == AF_UNSPEC)
4832 return -EOPNOTSUPP; 4831 return -EOPNOTSUPP;
4833 4832
4834 return sctp_connect(sock->sk, uaddr, 4833 return sctp_connect(sock->sk, uaddr, addr_len, flags);
4835 } 4834 }
4836 4835
4837 /* Only called when shutdown a listening SCTP !! 4836 /* FIXME: Write comments. */
4838 static int sctp_disconnect(struct sock *sk, i 4837 static int sctp_disconnect(struct sock *sk, int flags)
4839 { 4838 {
4840 if (!sctp_style(sk, TCP)) !! 4839 return -EOPNOTSUPP; /* STUB */
4841 return -EOPNOTSUPP; <<
4842 <<
4843 sk->sk_shutdown |= RCV_SHUTDOWN; <<
4844 return 0; <<
4845 } 4840 }
4846 4841
4847 /* 4.1.4 accept() - TCP Style Syntax 4842 /* 4.1.4 accept() - TCP Style Syntax
4848 * 4843 *
4849 * Applications use accept() call to remove a 4844 * Applications use accept() call to remove an established SCTP
4850 * association from the accept queue of the e 4845 * association from the accept queue of the endpoint. A new socket
4851 * descriptor will be returned from accept() 4846 * descriptor will be returned from accept() to represent the newly
4852 * formed association. 4847 * formed association.
4853 */ 4848 */
4854 static struct sock *sctp_accept(struct sock * !! 4849 static struct sock *sctp_accept(struct sock *sk, int flags, int *err, bool kern)
4855 { 4850 {
4856 struct sctp_sock *sp; 4851 struct sctp_sock *sp;
4857 struct sctp_endpoint *ep; 4852 struct sctp_endpoint *ep;
4858 struct sock *newsk = NULL; 4853 struct sock *newsk = NULL;
4859 struct sctp_association *asoc; 4854 struct sctp_association *asoc;
4860 long timeo; 4855 long timeo;
4861 int error = 0; 4856 int error = 0;
4862 4857
4863 lock_sock(sk); 4858 lock_sock(sk);
4864 4859
4865 sp = sctp_sk(sk); 4860 sp = sctp_sk(sk);
4866 ep = sp->ep; 4861 ep = sp->ep;
4867 4862
4868 if (!sctp_style(sk, TCP)) { 4863 if (!sctp_style(sk, TCP)) {
4869 error = -EOPNOTSUPP; 4864 error = -EOPNOTSUPP;
4870 goto out; 4865 goto out;
4871 } 4866 }
4872 4867
4873 if (!sctp_sstate(sk, LISTENING) || !! 4868 if (!sctp_sstate(sk, LISTENING)) {
4874 (sk->sk_shutdown & RCV_SHUTDOWN)) <<
4875 error = -EINVAL; 4869 error = -EINVAL;
4876 goto out; 4870 goto out;
4877 } 4871 }
4878 4872
4879 timeo = sock_rcvtimeo(sk, arg->flags !! 4873 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
4880 4874
4881 error = sctp_wait_for_accept(sk, time 4875 error = sctp_wait_for_accept(sk, timeo);
4882 if (error) 4876 if (error)
4883 goto out; 4877 goto out;
4884 4878
4885 /* We treat the list of associations 4879 /* We treat the list of associations on the endpoint as the accept
4886 * queue and pick the first associati 4880 * queue and pick the first association on the list.
4887 */ 4881 */
4888 asoc = list_entry(ep->asocs.next, str 4882 asoc = list_entry(ep->asocs.next, struct sctp_association, asocs);
4889 4883
4890 newsk = sp->pf->create_accept_sk(sk, !! 4884 newsk = sp->pf->create_accept_sk(sk, asoc, kern);
4891 if (!newsk) { 4885 if (!newsk) {
4892 error = -ENOMEM; 4886 error = -ENOMEM;
4893 goto out; 4887 goto out;
4894 } 4888 }
4895 4889
4896 /* Populate the fields of the newsk f 4890 /* Populate the fields of the newsk from the oldsk and migrate the
4897 * asoc to the newsk. 4891 * asoc to the newsk.
4898 */ 4892 */
4899 error = sctp_sock_migrate(sk, newsk, 4893 error = sctp_sock_migrate(sk, newsk, asoc, SCTP_SOCKET_TCP);
4900 if (error) { 4894 if (error) {
4901 sk_common_release(newsk); 4895 sk_common_release(newsk);
4902 newsk = NULL; 4896 newsk = NULL;
4903 } 4897 }
4904 4898
4905 out: 4899 out:
4906 release_sock(sk); 4900 release_sock(sk);
4907 arg->err = error; !! 4901 *err = error;
4908 return newsk; 4902 return newsk;
4909 } 4903 }
4910 4904
4911 /* The SCTP ioctl handler. */ 4905 /* The SCTP ioctl handler. */
4912 static int sctp_ioctl(struct sock *sk, int cm 4906 static int sctp_ioctl(struct sock *sk, int cmd, int *karg)
4913 { 4907 {
4914 int rc = -ENOTCONN; 4908 int rc = -ENOTCONN;
4915 4909
4916 lock_sock(sk); 4910 lock_sock(sk);
4917 4911
4918 /* 4912 /*
4919 * SEQPACKET-style sockets in LISTENI 4913 * SEQPACKET-style sockets in LISTENING state are valid, for
4920 * SCTP, so only discard TCP-style so 4914 * SCTP, so only discard TCP-style sockets in LISTENING state.
4921 */ 4915 */
4922 if (sctp_style(sk, TCP) && sctp_sstat 4916 if (sctp_style(sk, TCP) && sctp_sstate(sk, LISTENING))
4923 goto out; 4917 goto out;
4924 4918
4925 switch (cmd) { 4919 switch (cmd) {
4926 case SIOCINQ: { 4920 case SIOCINQ: {
4927 struct sk_buff *skb; 4921 struct sk_buff *skb;
4928 *karg = 0; 4922 *karg = 0;
4929 4923
4930 skb = skb_peek(&sk->sk_receiv 4924 skb = skb_peek(&sk->sk_receive_queue);
4931 if (skb != NULL) { 4925 if (skb != NULL) {
4932 /* 4926 /*
4933 * We will only retur 4927 * We will only return the amount of this packet since
4934 * that is all that w 4928 * that is all that will be read.
4935 */ 4929 */
4936 *karg = skb->len; 4930 *karg = skb->len;
4937 } 4931 }
4938 rc = 0; 4932 rc = 0;
4939 break; 4933 break;
4940 } 4934 }
4941 default: 4935 default:
4942 rc = -ENOIOCTLCMD; 4936 rc = -ENOIOCTLCMD;
4943 break; 4937 break;
4944 } 4938 }
4945 out: 4939 out:
4946 release_sock(sk); 4940 release_sock(sk);
4947 return rc; 4941 return rc;
4948 } 4942 }
4949 4943
4950 /* This is the function which gets called dur 4944 /* This is the function which gets called during socket creation to
4951 * initialized the SCTP-specific portion of t 4945 * initialized the SCTP-specific portion of the sock.
4952 * The sock structure should already be zero- 4946 * The sock structure should already be zero-filled memory.
4953 */ 4947 */
4954 static int sctp_init_sock(struct sock *sk) 4948 static int sctp_init_sock(struct sock *sk)
4955 { 4949 {
4956 struct net *net = sock_net(sk); 4950 struct net *net = sock_net(sk);
4957 struct sctp_sock *sp; 4951 struct sctp_sock *sp;
4958 4952
4959 pr_debug("%s: sk:%p\n", __func__, sk) 4953 pr_debug("%s: sk:%p\n", __func__, sk);
4960 4954
4961 sp = sctp_sk(sk); 4955 sp = sctp_sk(sk);
4962 4956
4963 /* Initialize the SCTP per socket are 4957 /* Initialize the SCTP per socket area. */
4964 switch (sk->sk_type) { 4958 switch (sk->sk_type) {
4965 case SOCK_SEQPACKET: 4959 case SOCK_SEQPACKET:
4966 sp->type = SCTP_SOCKET_UDP; 4960 sp->type = SCTP_SOCKET_UDP;
4967 break; 4961 break;
4968 case SOCK_STREAM: 4962 case SOCK_STREAM:
4969 sp->type = SCTP_SOCKET_TCP; 4963 sp->type = SCTP_SOCKET_TCP;
4970 break; 4964 break;
4971 default: 4965 default:
4972 return -ESOCKTNOSUPPORT; 4966 return -ESOCKTNOSUPPORT;
4973 } 4967 }
4974 4968
4975 sk->sk_gso_type = SKB_GSO_SCTP; 4969 sk->sk_gso_type = SKB_GSO_SCTP;
4976 4970
4977 /* Initialize default send parameters 4971 /* Initialize default send parameters. These parameters can be
4978 * modified with the SCTP_DEFAULT_SEN 4972 * modified with the SCTP_DEFAULT_SEND_PARAM socket option.
4979 */ 4973 */
4980 sp->default_stream = 0; 4974 sp->default_stream = 0;
4981 sp->default_ppid = 0; 4975 sp->default_ppid = 0;
4982 sp->default_flags = 0; 4976 sp->default_flags = 0;
4983 sp->default_context = 0; 4977 sp->default_context = 0;
4984 sp->default_timetolive = 0; 4978 sp->default_timetolive = 0;
4985 4979
4986 sp->default_rcv_context = 0; 4980 sp->default_rcv_context = 0;
4987 sp->max_burst = net->sctp.max_burst; 4981 sp->max_burst = net->sctp.max_burst;
4988 4982
4989 sp->sctp_hmac_alg = net->sctp.sctp_hm 4983 sp->sctp_hmac_alg = net->sctp.sctp_hmac_alg;
4990 4984
4991 /* Initialize default setup parameter 4985 /* Initialize default setup parameters. These parameters
4992 * can be modified with the SCTP_INIT 4986 * can be modified with the SCTP_INITMSG socket option or
4993 * overridden by the SCTP_INIT CMSG. 4987 * overridden by the SCTP_INIT CMSG.
4994 */ 4988 */
4995 sp->initmsg.sinit_num_ostreams = sc 4989 sp->initmsg.sinit_num_ostreams = sctp_max_outstreams;
4996 sp->initmsg.sinit_max_instreams = sc 4990 sp->initmsg.sinit_max_instreams = sctp_max_instreams;
4997 sp->initmsg.sinit_max_attempts = ne 4991 sp->initmsg.sinit_max_attempts = net->sctp.max_retrans_init;
4998 sp->initmsg.sinit_max_init_timeo = ne 4992 sp->initmsg.sinit_max_init_timeo = net->sctp.rto_max;
4999 4993
5000 /* Initialize default RTO related par 4994 /* Initialize default RTO related parameters. These parameters can
5001 * be modified for with the SCTP_RTOI 4995 * be modified for with the SCTP_RTOINFO socket option.
5002 */ 4996 */
5003 sp->rtoinfo.srto_initial = net->sctp. 4997 sp->rtoinfo.srto_initial = net->sctp.rto_initial;
5004 sp->rtoinfo.srto_max = net->sctp. 4998 sp->rtoinfo.srto_max = net->sctp.rto_max;
5005 sp->rtoinfo.srto_min = net->sctp. 4999 sp->rtoinfo.srto_min = net->sctp.rto_min;
5006 5000
5007 /* Initialize default association rel 5001 /* Initialize default association related parameters. These parameters
5008 * can be modified with the SCTP_ASSO 5002 * can be modified with the SCTP_ASSOCINFO socket option.
5009 */ 5003 */
5010 sp->assocparams.sasoc_asocmaxrxt = ne 5004 sp->assocparams.sasoc_asocmaxrxt = net->sctp.max_retrans_association;
5011 sp->assocparams.sasoc_number_peer_des 5005 sp->assocparams.sasoc_number_peer_destinations = 0;
5012 sp->assocparams.sasoc_peer_rwnd = 0; 5006 sp->assocparams.sasoc_peer_rwnd = 0;
5013 sp->assocparams.sasoc_local_rwnd = 0; 5007 sp->assocparams.sasoc_local_rwnd = 0;
5014 sp->assocparams.sasoc_cookie_life = n 5008 sp->assocparams.sasoc_cookie_life = net->sctp.valid_cookie_life;
5015 5009
5016 /* Initialize default event subscript 5010 /* Initialize default event subscriptions. By default, all the
5017 * options are off. 5011 * options are off.
5018 */ 5012 */
5019 sp->subscribe = 0; 5013 sp->subscribe = 0;
5020 5014
5021 /* Default Peer Address Parameters. 5015 /* Default Peer Address Parameters. These defaults can
5022 * be modified via SCTP_PEER_ADDR_PAR 5016 * be modified via SCTP_PEER_ADDR_PARAMS
5023 */ 5017 */
5024 sp->hbinterval = net->sctp.hb_interv 5018 sp->hbinterval = net->sctp.hb_interval;
5025 sp->udp_port = htons(net->sctp.udp 5019 sp->udp_port = htons(net->sctp.udp_port);
5026 sp->encap_port = htons(net->sctp.enc 5020 sp->encap_port = htons(net->sctp.encap_port);
5027 sp->pathmaxrxt = net->sctp.max_retra 5021 sp->pathmaxrxt = net->sctp.max_retrans_path;
5028 sp->pf_retrans = net->sctp.pf_retran 5022 sp->pf_retrans = net->sctp.pf_retrans;
5029 sp->ps_retrans = net->sctp.ps_retran 5023 sp->ps_retrans = net->sctp.ps_retrans;
5030 sp->pf_expose = net->sctp.pf_expose 5024 sp->pf_expose = net->sctp.pf_expose;
5031 sp->pathmtu = 0; /* allow default 5025 sp->pathmtu = 0; /* allow default discovery */
5032 sp->sackdelay = net->sctp.sack_time 5026 sp->sackdelay = net->sctp.sack_timeout;
5033 sp->sackfreq = 2; 5027 sp->sackfreq = 2;
5034 sp->param_flags = SPP_HB_ENABLE | 5028 sp->param_flags = SPP_HB_ENABLE |
5035 SPP_PMTUD_ENABLE | 5029 SPP_PMTUD_ENABLE |
5036 SPP_SACKDELAY_ENABL 5030 SPP_SACKDELAY_ENABLE;
5037 sp->default_ss = SCTP_SS_DEFAULT; 5031 sp->default_ss = SCTP_SS_DEFAULT;
5038 5032
5039 /* If enabled no SCTP message fragmen 5033 /* If enabled no SCTP message fragmentation will be performed.
5040 * Configure through SCTP_DISABLE_FRA 5034 * Configure through SCTP_DISABLE_FRAGMENTS socket option.
5041 */ 5035 */
5042 sp->disable_fragments = 0; 5036 sp->disable_fragments = 0;
5043 5037
5044 /* Enable Nagle algorithm by default. 5038 /* Enable Nagle algorithm by default. */
5045 sp->nodelay = 0; 5039 sp->nodelay = 0;
5046 5040
5047 sp->recvrcvinfo = 0; 5041 sp->recvrcvinfo = 0;
5048 sp->recvnxtinfo = 0; 5042 sp->recvnxtinfo = 0;
5049 5043
5050 /* Enable by default. */ 5044 /* Enable by default. */
5051 sp->v4mapped = 1; 5045 sp->v4mapped = 1;
5052 5046
5053 /* Auto-close idle associations after 5047 /* Auto-close idle associations after the configured
5054 * number of seconds. A value of 0 d 5048 * number of seconds. A value of 0 disables this
5055 * feature. Configure through the SC 5049 * feature. Configure through the SCTP_AUTOCLOSE socket option,
5056 * for UDP-style sockets only. 5050 * for UDP-style sockets only.
5057 */ 5051 */
5058 sp->autoclose = 0; 5052 sp->autoclose = 0;
5059 5053
5060 /* User specified fragmentation limit 5054 /* User specified fragmentation limit. */
5061 sp->user_frag = 0; 5055 sp->user_frag = 0;
5062 5056
5063 sp->adaptation_ind = 0; 5057 sp->adaptation_ind = 0;
5064 5058
5065 sp->pf = sctp_get_pf_specific(sk->sk_ 5059 sp->pf = sctp_get_pf_specific(sk->sk_family);
5066 5060
5067 /* Control variables for partial data 5061 /* Control variables for partial data delivery. */
5068 atomic_set(&sp->pd_mode, 0); 5062 atomic_set(&sp->pd_mode, 0);
5069 skb_queue_head_init(&sp->pd_lobby); 5063 skb_queue_head_init(&sp->pd_lobby);
5070 sp->frag_interleave = 0; 5064 sp->frag_interleave = 0;
5071 sp->probe_interval = net->sctp.probe_ 5065 sp->probe_interval = net->sctp.probe_interval;
5072 5066
5073 /* Create a per socket endpoint struc 5067 /* Create a per socket endpoint structure. Even if we
5074 * change the data structure relation 5068 * change the data structure relationships, this may still
5075 * be useful for storing pre-connect 5069 * be useful for storing pre-connect address information.
5076 */ 5070 */
5077 sp->ep = sctp_endpoint_new(sk, GFP_KE 5071 sp->ep = sctp_endpoint_new(sk, GFP_KERNEL);
5078 if (!sp->ep) 5072 if (!sp->ep)
5079 return -ENOMEM; 5073 return -ENOMEM;
5080 5074
5081 sp->hmac = NULL; 5075 sp->hmac = NULL;
5082 5076
5083 sk->sk_destruct = sctp_destruct_sock; 5077 sk->sk_destruct = sctp_destruct_sock;
5084 5078
5085 SCTP_DBG_OBJCNT_INC(sock); 5079 SCTP_DBG_OBJCNT_INC(sock);
5086 5080
5087 sk_sockets_allocated_inc(sk); 5081 sk_sockets_allocated_inc(sk);
5088 sock_prot_inuse_add(net, sk->sk_prot, 5082 sock_prot_inuse_add(net, sk->sk_prot, 1);
5089 5083
5090 return 0; 5084 return 0;
5091 } 5085 }
5092 5086
5093 /* Cleanup any SCTP per socket resources. Mus 5087 /* Cleanup any SCTP per socket resources. Must be called with
5094 * sock_net(sk)->sctp.addr_wq_lock held if sp 5088 * sock_net(sk)->sctp.addr_wq_lock held if sp->do_auto_asconf is true
5095 */ 5089 */
5096 static void sctp_destroy_sock(struct sock *sk 5090 static void sctp_destroy_sock(struct sock *sk)
5097 { 5091 {
5098 struct sctp_sock *sp; 5092 struct sctp_sock *sp;
5099 5093
5100 pr_debug("%s: sk:%p\n", __func__, sk) 5094 pr_debug("%s: sk:%p\n", __func__, sk);
5101 5095
5102 /* Release our hold on the endpoint. 5096 /* Release our hold on the endpoint. */
5103 sp = sctp_sk(sk); 5097 sp = sctp_sk(sk);
5104 /* This could happen during socket in 5098 /* This could happen during socket init, thus we bail out
5105 * early, since the rest of the below 5099 * early, since the rest of the below is not setup either.
5106 */ 5100 */
5107 if (sp->ep == NULL) 5101 if (sp->ep == NULL)
5108 return; 5102 return;
5109 5103
5110 if (sp->do_auto_asconf) { 5104 if (sp->do_auto_asconf) {
5111 sp->do_auto_asconf = 0; 5105 sp->do_auto_asconf = 0;
5112 list_del(&sp->auto_asconf_lis 5106 list_del(&sp->auto_asconf_list);
5113 } 5107 }
5114 sctp_endpoint_free(sp->ep); 5108 sctp_endpoint_free(sp->ep);
5115 sk_sockets_allocated_dec(sk); 5109 sk_sockets_allocated_dec(sk);
5116 sock_prot_inuse_add(sock_net(sk), sk- 5110 sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
5117 } 5111 }
5118 5112
5119 /* Triggered when there are no references on 5113 /* Triggered when there are no references on the socket anymore */
5120 static void sctp_destruct_common(struct sock 5114 static void sctp_destruct_common(struct sock *sk)
5121 { 5115 {
5122 struct sctp_sock *sp = sctp_sk(sk); 5116 struct sctp_sock *sp = sctp_sk(sk);
5123 5117
5124 /* Free up the HMAC transform. */ 5118 /* Free up the HMAC transform. */
5125 crypto_free_shash(sp->hmac); 5119 crypto_free_shash(sp->hmac);
5126 } 5120 }
5127 5121
5128 static void sctp_destruct_sock(struct sock *s 5122 static void sctp_destruct_sock(struct sock *sk)
5129 { 5123 {
5130 sctp_destruct_common(sk); 5124 sctp_destruct_common(sk);
5131 inet_sock_destruct(sk); 5125 inet_sock_destruct(sk);
5132 } 5126 }
5133 5127
5134 /* API 4.1.7 shutdown() - TCP Style Syntax 5128 /* API 4.1.7 shutdown() - TCP Style Syntax
5135 * int shutdown(int socket, int how); 5129 * int shutdown(int socket, int how);
5136 * 5130 *
5137 * sd - the socket descriptor of the 5131 * sd - the socket descriptor of the association to be closed.
5138 * how - Specifies the type of shutdo 5132 * how - Specifies the type of shutdown. The values are
5139 * as follows: 5133 * as follows:
5140 * SHUT_RD 5134 * SHUT_RD
5141 * Disables further recei 5135 * Disables further receive operations. No SCTP
5142 * protocol action is tak 5136 * protocol action is taken.
5143 * SHUT_WR 5137 * SHUT_WR
5144 * Disables further send 5138 * Disables further send operations, and initiates
5145 * the SCTP shutdown sequ 5139 * the SCTP shutdown sequence.
5146 * SHUT_RDWR 5140 * SHUT_RDWR
5147 * Disables further send 5141 * Disables further send and receive operations
5148 * and initiates the SCTP 5142 * and initiates the SCTP shutdown sequence.
5149 */ 5143 */
5150 static void sctp_shutdown(struct sock *sk, in 5144 static void sctp_shutdown(struct sock *sk, int how)
5151 { 5145 {
5152 struct net *net = sock_net(sk); 5146 struct net *net = sock_net(sk);
5153 struct sctp_endpoint *ep; 5147 struct sctp_endpoint *ep;
5154 5148
5155 if (!sctp_style(sk, TCP)) 5149 if (!sctp_style(sk, TCP))
5156 return; 5150 return;
5157 5151
5158 ep = sctp_sk(sk)->ep; 5152 ep = sctp_sk(sk)->ep;
5159 if (how & SEND_SHUTDOWN && !list_empt 5153 if (how & SEND_SHUTDOWN && !list_empty(&ep->asocs)) {
5160 struct sctp_association *asoc 5154 struct sctp_association *asoc;
5161 5155
5162 inet_sk_set_state(sk, SCTP_SS 5156 inet_sk_set_state(sk, SCTP_SS_CLOSING);
5163 asoc = list_entry(ep->asocs.n 5157 asoc = list_entry(ep->asocs.next,
5164 struct sctp 5158 struct sctp_association, asocs);
5165 sctp_primitive_SHUTDOWN(net, 5159 sctp_primitive_SHUTDOWN(net, asoc, NULL);
5166 } 5160 }
5167 } 5161 }
5168 5162
5169 int sctp_get_sctp_info(struct sock *sk, struc 5163 int sctp_get_sctp_info(struct sock *sk, struct sctp_association *asoc,
5170 struct sctp_info *info 5164 struct sctp_info *info)
5171 { 5165 {
5172 struct sctp_transport *prim; 5166 struct sctp_transport *prim;
5173 struct list_head *pos; 5167 struct list_head *pos;
5174 int mask; 5168 int mask;
5175 5169
5176 memset(info, 0, sizeof(*info)); 5170 memset(info, 0, sizeof(*info));
5177 if (!asoc) { 5171 if (!asoc) {
5178 struct sctp_sock *sp = sctp_s 5172 struct sctp_sock *sp = sctp_sk(sk);
5179 5173
5180 info->sctpi_s_autoclose = sp- 5174 info->sctpi_s_autoclose = sp->autoclose;
5181 info->sctpi_s_adaptation_ind 5175 info->sctpi_s_adaptation_ind = sp->adaptation_ind;
5182 info->sctpi_s_pd_point = sp-> 5176 info->sctpi_s_pd_point = sp->pd_point;
5183 info->sctpi_s_nodelay = sp->n 5177 info->sctpi_s_nodelay = sp->nodelay;
5184 info->sctpi_s_disable_fragmen 5178 info->sctpi_s_disable_fragments = sp->disable_fragments;
5185 info->sctpi_s_v4mapped = sp-> 5179 info->sctpi_s_v4mapped = sp->v4mapped;
5186 info->sctpi_s_frag_interleave 5180 info->sctpi_s_frag_interleave = sp->frag_interleave;
5187 info->sctpi_s_type = sp->type 5181 info->sctpi_s_type = sp->type;
5188 5182
5189 return 0; 5183 return 0;
5190 } 5184 }
5191 5185
5192 info->sctpi_tag = asoc->c.my_vtag; 5186 info->sctpi_tag = asoc->c.my_vtag;
5193 info->sctpi_state = asoc->state; 5187 info->sctpi_state = asoc->state;
5194 info->sctpi_rwnd = asoc->a_rwnd; 5188 info->sctpi_rwnd = asoc->a_rwnd;
5195 info->sctpi_unackdata = asoc->unack_d 5189 info->sctpi_unackdata = asoc->unack_data;
5196 info->sctpi_penddata = sctp_tsnmap_pe 5190 info->sctpi_penddata = sctp_tsnmap_pending(&asoc->peer.tsn_map);
5197 info->sctpi_instrms = asoc->stream.in 5191 info->sctpi_instrms = asoc->stream.incnt;
5198 info->sctpi_outstrms = asoc->stream.o 5192 info->sctpi_outstrms = asoc->stream.outcnt;
5199 list_for_each(pos, &asoc->base.inqueu 5193 list_for_each(pos, &asoc->base.inqueue.in_chunk_list)
5200 info->sctpi_inqueue++; 5194 info->sctpi_inqueue++;
5201 list_for_each(pos, &asoc->outqueue.ou 5195 list_for_each(pos, &asoc->outqueue.out_chunk_list)
5202 info->sctpi_outqueue++; 5196 info->sctpi_outqueue++;
5203 info->sctpi_overall_error = asoc->ove 5197 info->sctpi_overall_error = asoc->overall_error_count;
5204 info->sctpi_max_burst = asoc->max_bur 5198 info->sctpi_max_burst = asoc->max_burst;
5205 info->sctpi_maxseg = asoc->frag_point 5199 info->sctpi_maxseg = asoc->frag_point;
5206 info->sctpi_peer_rwnd = asoc->peer.rw 5200 info->sctpi_peer_rwnd = asoc->peer.rwnd;
5207 info->sctpi_peer_tag = asoc->c.peer_v 5201 info->sctpi_peer_tag = asoc->c.peer_vtag;
5208 5202
5209 mask = asoc->peer.intl_capable << 1; 5203 mask = asoc->peer.intl_capable << 1;
5210 mask = (mask | asoc->peer.ecn_capable 5204 mask = (mask | asoc->peer.ecn_capable) << 1;
5211 mask = (mask | asoc->peer.ipv4_addres 5205 mask = (mask | asoc->peer.ipv4_address) << 1;
5212 mask = (mask | asoc->peer.ipv6_addres 5206 mask = (mask | asoc->peer.ipv6_address) << 1;
5213 mask = (mask | asoc->peer.reconf_capa 5207 mask = (mask | asoc->peer.reconf_capable) << 1;
5214 mask = (mask | asoc->peer.asconf_capa 5208 mask = (mask | asoc->peer.asconf_capable) << 1;
5215 mask = (mask | asoc->peer.prsctp_capa 5209 mask = (mask | asoc->peer.prsctp_capable) << 1;
5216 mask = (mask | asoc->peer.auth_capabl 5210 mask = (mask | asoc->peer.auth_capable);
5217 info->sctpi_peer_capable = mask; 5211 info->sctpi_peer_capable = mask;
5218 mask = asoc->peer.sack_needed << 1; 5212 mask = asoc->peer.sack_needed << 1;
5219 mask = (mask | asoc->peer.sack_genera 5213 mask = (mask | asoc->peer.sack_generation) << 1;
5220 mask = (mask | asoc->peer.zero_window 5214 mask = (mask | asoc->peer.zero_window_announced);
5221 info->sctpi_peer_sack = mask; 5215 info->sctpi_peer_sack = mask;
5222 5216
5223 info->sctpi_isacks = asoc->stats.isac 5217 info->sctpi_isacks = asoc->stats.isacks;
5224 info->sctpi_osacks = asoc->stats.osac 5218 info->sctpi_osacks = asoc->stats.osacks;
5225 info->sctpi_opackets = asoc->stats.op 5219 info->sctpi_opackets = asoc->stats.opackets;
5226 info->sctpi_ipackets = asoc->stats.ip 5220 info->sctpi_ipackets = asoc->stats.ipackets;
5227 info->sctpi_rtxchunks = asoc->stats.r 5221 info->sctpi_rtxchunks = asoc->stats.rtxchunks;
5228 info->sctpi_outofseqtsns = asoc->stat 5222 info->sctpi_outofseqtsns = asoc->stats.outofseqtsns;
5229 info->sctpi_idupchunks = asoc->stats. 5223 info->sctpi_idupchunks = asoc->stats.idupchunks;
5230 info->sctpi_gapcnt = asoc->stats.gapc 5224 info->sctpi_gapcnt = asoc->stats.gapcnt;
5231 info->sctpi_ouodchunks = asoc->stats. 5225 info->sctpi_ouodchunks = asoc->stats.ouodchunks;
5232 info->sctpi_iuodchunks = asoc->stats. 5226 info->sctpi_iuodchunks = asoc->stats.iuodchunks;
5233 info->sctpi_oodchunks = asoc->stats.o 5227 info->sctpi_oodchunks = asoc->stats.oodchunks;
5234 info->sctpi_iodchunks = asoc->stats.i 5228 info->sctpi_iodchunks = asoc->stats.iodchunks;
5235 info->sctpi_octrlchunks = asoc->stats 5229 info->sctpi_octrlchunks = asoc->stats.octrlchunks;
5236 info->sctpi_ictrlchunks = asoc->stats 5230 info->sctpi_ictrlchunks = asoc->stats.ictrlchunks;
5237 5231
5238 prim = asoc->peer.primary_path; 5232 prim = asoc->peer.primary_path;
5239 memcpy(&info->sctpi_p_address, &prim- 5233 memcpy(&info->sctpi_p_address, &prim->ipaddr, sizeof(prim->ipaddr));
5240 info->sctpi_p_state = prim->state; 5234 info->sctpi_p_state = prim->state;
5241 info->sctpi_p_cwnd = prim->cwnd; 5235 info->sctpi_p_cwnd = prim->cwnd;
5242 info->sctpi_p_srtt = prim->srtt; 5236 info->sctpi_p_srtt = prim->srtt;
5243 info->sctpi_p_rto = jiffies_to_msecs( 5237 info->sctpi_p_rto = jiffies_to_msecs(prim->rto);
5244 info->sctpi_p_hbinterval = prim->hbin 5238 info->sctpi_p_hbinterval = prim->hbinterval;
5245 info->sctpi_p_pathmaxrxt = prim->path 5239 info->sctpi_p_pathmaxrxt = prim->pathmaxrxt;
5246 info->sctpi_p_sackdelay = jiffies_to_ 5240 info->sctpi_p_sackdelay = jiffies_to_msecs(prim->sackdelay);
5247 info->sctpi_p_ssthresh = prim->ssthre 5241 info->sctpi_p_ssthresh = prim->ssthresh;
5248 info->sctpi_p_partial_bytes_acked = p 5242 info->sctpi_p_partial_bytes_acked = prim->partial_bytes_acked;
5249 info->sctpi_p_flight_size = prim->fli 5243 info->sctpi_p_flight_size = prim->flight_size;
5250 info->sctpi_p_error = prim->error_cou 5244 info->sctpi_p_error = prim->error_count;
5251 5245
5252 return 0; 5246 return 0;
5253 } 5247 }
5254 EXPORT_SYMBOL_GPL(sctp_get_sctp_info); 5248 EXPORT_SYMBOL_GPL(sctp_get_sctp_info);
5255 5249
5256 /* use callback to avoid exporting the core s 5250 /* use callback to avoid exporting the core structure */
5257 void sctp_transport_walk_start(struct rhashta 5251 void sctp_transport_walk_start(struct rhashtable_iter *iter) __acquires(RCU)
5258 { 5252 {
5259 rhltable_walk_enter(&sctp_transport_h 5253 rhltable_walk_enter(&sctp_transport_hashtable, iter);
5260 5254
5261 rhashtable_walk_start(iter); 5255 rhashtable_walk_start(iter);
5262 } 5256 }
5263 5257
5264 void sctp_transport_walk_stop(struct rhashtab 5258 void sctp_transport_walk_stop(struct rhashtable_iter *iter) __releases(RCU)
5265 { 5259 {
5266 rhashtable_walk_stop(iter); 5260 rhashtable_walk_stop(iter);
5267 rhashtable_walk_exit(iter); 5261 rhashtable_walk_exit(iter);
5268 } 5262 }
5269 5263
5270 struct sctp_transport *sctp_transport_get_nex 5264 struct sctp_transport *sctp_transport_get_next(struct net *net,
5271 5265 struct rhashtable_iter *iter)
5272 { 5266 {
5273 struct sctp_transport *t; 5267 struct sctp_transport *t;
5274 5268
5275 t = rhashtable_walk_next(iter); 5269 t = rhashtable_walk_next(iter);
5276 for (; t; t = rhashtable_walk_next(it 5270 for (; t; t = rhashtable_walk_next(iter)) {
5277 if (IS_ERR(t)) { 5271 if (IS_ERR(t)) {
5278 if (PTR_ERR(t) == -EA 5272 if (PTR_ERR(t) == -EAGAIN)
5279 continue; 5273 continue;
5280 break; 5274 break;
5281 } 5275 }
5282 5276
5283 if (!sctp_transport_hold(t)) 5277 if (!sctp_transport_hold(t))
5284 continue; 5278 continue;
5285 5279
5286 if (net_eq(t->asoc->base.net, 5280 if (net_eq(t->asoc->base.net, net) &&
5287 t->asoc->peer.primary_pat 5281 t->asoc->peer.primary_path == t)
5288 break; 5282 break;
5289 5283
5290 sctp_transport_put(t); 5284 sctp_transport_put(t);
5291 } 5285 }
5292 5286
5293 return t; 5287 return t;
5294 } 5288 }
5295 5289
5296 struct sctp_transport *sctp_transport_get_idx 5290 struct sctp_transport *sctp_transport_get_idx(struct net *net,
5297 5291 struct rhashtable_iter *iter,
5298 5292 int pos)
5299 { 5293 {
5300 struct sctp_transport *t; 5294 struct sctp_transport *t;
5301 5295
5302 if (!pos) 5296 if (!pos)
5303 return SEQ_START_TOKEN; 5297 return SEQ_START_TOKEN;
5304 5298
5305 while ((t = sctp_transport_get_next(n 5299 while ((t = sctp_transport_get_next(net, iter)) && !IS_ERR(t)) {
5306 if (!--pos) 5300 if (!--pos)
5307 break; 5301 break;
5308 sctp_transport_put(t); 5302 sctp_transport_put(t);
5309 } 5303 }
5310 5304
5311 return t; 5305 return t;
5312 } 5306 }
5313 5307
5314 int sctp_for_each_endpoint(int (*cb)(struct s 5308 int sctp_for_each_endpoint(int (*cb)(struct sctp_endpoint *, void *),
5315 void *p) { 5309 void *p) {
5316 int err = 0; 5310 int err = 0;
5317 int hash = 0; 5311 int hash = 0;
5318 struct sctp_endpoint *ep; 5312 struct sctp_endpoint *ep;
5319 struct sctp_hashbucket *head; 5313 struct sctp_hashbucket *head;
5320 5314
5321 for (head = sctp_ep_hashtable; hash < 5315 for (head = sctp_ep_hashtable; hash < sctp_ep_hashsize;
5322 hash++, head++) { 5316 hash++, head++) {
5323 read_lock_bh(&head->lock); 5317 read_lock_bh(&head->lock);
5324 sctp_for_each_hentry(ep, &hea 5318 sctp_for_each_hentry(ep, &head->chain) {
5325 err = cb(ep, p); 5319 err = cb(ep, p);
5326 if (err) 5320 if (err)
5327 break; 5321 break;
5328 } 5322 }
5329 read_unlock_bh(&head->lock); 5323 read_unlock_bh(&head->lock);
5330 } 5324 }
5331 5325
5332 return err; 5326 return err;
5333 } 5327 }
5334 EXPORT_SYMBOL_GPL(sctp_for_each_endpoint); 5328 EXPORT_SYMBOL_GPL(sctp_for_each_endpoint);
5335 5329
5336 int sctp_transport_lookup_process(sctp_callba 5330 int sctp_transport_lookup_process(sctp_callback_t cb, struct net *net,
5337 const union 5331 const union sctp_addr *laddr,
5338 const union 5332 const union sctp_addr *paddr, void *p, int dif)
5339 { 5333 {
5340 struct sctp_transport *transport; 5334 struct sctp_transport *transport;
5341 struct sctp_endpoint *ep; 5335 struct sctp_endpoint *ep;
5342 int err = -ENOENT; 5336 int err = -ENOENT;
5343 5337
5344 rcu_read_lock(); 5338 rcu_read_lock();
5345 transport = sctp_addrs_lookup_transpo 5339 transport = sctp_addrs_lookup_transport(net, laddr, paddr, dif, dif);
5346 if (!transport) { 5340 if (!transport) {
5347 rcu_read_unlock(); 5341 rcu_read_unlock();
5348 return err; 5342 return err;
5349 } 5343 }
5350 ep = transport->asoc->ep; 5344 ep = transport->asoc->ep;
5351 if (!sctp_endpoint_hold(ep)) { /* aso 5345 if (!sctp_endpoint_hold(ep)) { /* asoc can be peeled off */
5352 sctp_transport_put(transport) 5346 sctp_transport_put(transport);
5353 rcu_read_unlock(); 5347 rcu_read_unlock();
5354 return err; 5348 return err;
5355 } 5349 }
5356 rcu_read_unlock(); 5350 rcu_read_unlock();
5357 5351
5358 err = cb(ep, transport, p); 5352 err = cb(ep, transport, p);
5359 sctp_endpoint_put(ep); 5353 sctp_endpoint_put(ep);
5360 sctp_transport_put(transport); 5354 sctp_transport_put(transport);
5361 return err; 5355 return err;
5362 } 5356 }
5363 EXPORT_SYMBOL_GPL(sctp_transport_lookup_proce 5357 EXPORT_SYMBOL_GPL(sctp_transport_lookup_process);
5364 5358
5365 int sctp_transport_traverse_process(sctp_call 5359 int sctp_transport_traverse_process(sctp_callback_t cb, sctp_callback_t cb_done,
5366 struct ne 5360 struct net *net, int *pos, void *p)
5367 { 5361 {
5368 struct rhashtable_iter hti; 5362 struct rhashtable_iter hti;
5369 struct sctp_transport *tsp; 5363 struct sctp_transport *tsp;
5370 struct sctp_endpoint *ep; 5364 struct sctp_endpoint *ep;
5371 int ret; 5365 int ret;
5372 5366
5373 again: 5367 again:
5374 ret = 0; 5368 ret = 0;
5375 sctp_transport_walk_start(&hti); 5369 sctp_transport_walk_start(&hti);
5376 5370
5377 tsp = sctp_transport_get_idx(net, &ht 5371 tsp = sctp_transport_get_idx(net, &hti, *pos + 1);
5378 for (; !IS_ERR_OR_NULL(tsp); tsp = sc 5372 for (; !IS_ERR_OR_NULL(tsp); tsp = sctp_transport_get_next(net, &hti)) {
5379 ep = tsp->asoc->ep; 5373 ep = tsp->asoc->ep;
5380 if (sctp_endpoint_hold(ep)) { 5374 if (sctp_endpoint_hold(ep)) { /* asoc can be peeled off */
5381 ret = cb(ep, tsp, p); 5375 ret = cb(ep, tsp, p);
5382 if (ret) 5376 if (ret)
5383 break; 5377 break;
5384 sctp_endpoint_put(ep) 5378 sctp_endpoint_put(ep);
5385 } 5379 }
5386 (*pos)++; 5380 (*pos)++;
5387 sctp_transport_put(tsp); 5381 sctp_transport_put(tsp);
5388 } 5382 }
5389 sctp_transport_walk_stop(&hti); 5383 sctp_transport_walk_stop(&hti);
5390 5384
5391 if (ret) { 5385 if (ret) {
5392 if (cb_done && !cb_done(ep, t 5386 if (cb_done && !cb_done(ep, tsp, p)) {
5393 (*pos)++; 5387 (*pos)++;
5394 sctp_endpoint_put(ep) 5388 sctp_endpoint_put(ep);
5395 sctp_transport_put(ts 5389 sctp_transport_put(tsp);
5396 goto again; 5390 goto again;
5397 } 5391 }
5398 sctp_endpoint_put(ep); 5392 sctp_endpoint_put(ep);
5399 sctp_transport_put(tsp); 5393 sctp_transport_put(tsp);
5400 } 5394 }
5401 5395
5402 return ret; 5396 return ret;
5403 } 5397 }
5404 EXPORT_SYMBOL_GPL(sctp_transport_traverse_pro 5398 EXPORT_SYMBOL_GPL(sctp_transport_traverse_process);
5405 5399
5406 /* 7.2.1 Association Status (SCTP_STATUS) 5400 /* 7.2.1 Association Status (SCTP_STATUS)
5407 5401
5408 * Applications can retrieve current status i 5402 * Applications can retrieve current status information about an
5409 * association, including association state, 5403 * association, including association state, peer receiver window size,
5410 * number of unacked data chunks, and number 5404 * number of unacked data chunks, and number of data chunks pending
5411 * receipt. This information is read-only. 5405 * receipt. This information is read-only.
5412 */ 5406 */
5413 static int sctp_getsockopt_sctp_status(struct 5407 static int sctp_getsockopt_sctp_status(struct sock *sk, int len,
5414 char _ 5408 char __user *optval,
5415 int __ 5409 int __user *optlen)
5416 { 5410 {
5417 struct sctp_status status; 5411 struct sctp_status status;
5418 struct sctp_association *asoc = NULL; 5412 struct sctp_association *asoc = NULL;
5419 struct sctp_transport *transport; 5413 struct sctp_transport *transport;
5420 sctp_assoc_t associd; 5414 sctp_assoc_t associd;
5421 int retval = 0; 5415 int retval = 0;
5422 5416
5423 if (len < sizeof(status)) { 5417 if (len < sizeof(status)) {
5424 retval = -EINVAL; 5418 retval = -EINVAL;
5425 goto out; 5419 goto out;
5426 } 5420 }
5427 5421
5428 len = sizeof(status); 5422 len = sizeof(status);
5429 if (copy_from_user(&status, optval, l 5423 if (copy_from_user(&status, optval, len)) {
5430 retval = -EFAULT; 5424 retval = -EFAULT;
5431 goto out; 5425 goto out;
5432 } 5426 }
5433 5427
5434 associd = status.sstat_assoc_id; 5428 associd = status.sstat_assoc_id;
5435 asoc = sctp_id2assoc(sk, associd); 5429 asoc = sctp_id2assoc(sk, associd);
5436 if (!asoc) { 5430 if (!asoc) {
5437 retval = -EINVAL; 5431 retval = -EINVAL;
5438 goto out; 5432 goto out;
5439 } 5433 }
5440 5434
5441 transport = asoc->peer.primary_path; 5435 transport = asoc->peer.primary_path;
5442 5436
5443 status.sstat_assoc_id = sctp_assoc2id 5437 status.sstat_assoc_id = sctp_assoc2id(asoc);
5444 status.sstat_state = sctp_assoc_to_st 5438 status.sstat_state = sctp_assoc_to_state(asoc);
5445 status.sstat_rwnd = asoc->peer.rwnd; 5439 status.sstat_rwnd = asoc->peer.rwnd;
5446 status.sstat_unackdata = asoc->unack_ 5440 status.sstat_unackdata = asoc->unack_data;
5447 5441
5448 status.sstat_penddata = sctp_tsnmap_p 5442 status.sstat_penddata = sctp_tsnmap_pending(&asoc->peer.tsn_map);
5449 status.sstat_instrms = asoc->stream.i 5443 status.sstat_instrms = asoc->stream.incnt;
5450 status.sstat_outstrms = asoc->stream. 5444 status.sstat_outstrms = asoc->stream.outcnt;
5451 status.sstat_fragmentation_point = as 5445 status.sstat_fragmentation_point = asoc->frag_point;
5452 status.sstat_primary.spinfo_assoc_id 5446 status.sstat_primary.spinfo_assoc_id = sctp_assoc2id(transport->asoc);
5453 memcpy(&status.sstat_primary.spinfo_a 5447 memcpy(&status.sstat_primary.spinfo_address, &transport->ipaddr,
5454 transport->af_specifi 5448 transport->af_specific->sockaddr_len);
5455 /* Map ipv4 address into v4-mapped-on 5449 /* Map ipv4 address into v4-mapped-on-v6 address. */
5456 sctp_get_pf_specific(sk->sk_family)-> 5450 sctp_get_pf_specific(sk->sk_family)->addr_to_user(sctp_sk(sk),
5457 (union sctp_addr *)&status.ss 5451 (union sctp_addr *)&status.sstat_primary.spinfo_address);
5458 status.sstat_primary.spinfo_state = t 5452 status.sstat_primary.spinfo_state = transport->state;
5459 status.sstat_primary.spinfo_cwnd = tr 5453 status.sstat_primary.spinfo_cwnd = transport->cwnd;
5460 status.sstat_primary.spinfo_srtt = tr 5454 status.sstat_primary.spinfo_srtt = transport->srtt;
5461 status.sstat_primary.spinfo_rto = jif 5455 status.sstat_primary.spinfo_rto = jiffies_to_msecs(transport->rto);
5462 status.sstat_primary.spinfo_mtu = tra 5456 status.sstat_primary.spinfo_mtu = transport->pathmtu;
5463 5457
5464 if (status.sstat_primary.spinfo_state 5458 if (status.sstat_primary.spinfo_state == SCTP_UNKNOWN)
5465 status.sstat_primary.spinfo_s 5459 status.sstat_primary.spinfo_state = SCTP_ACTIVE;
5466 5460
5467 if (put_user(len, optlen)) { 5461 if (put_user(len, optlen)) {
5468 retval = -EFAULT; 5462 retval = -EFAULT;
5469 goto out; 5463 goto out;
5470 } 5464 }
5471 5465
5472 pr_debug("%s: len:%d, state:%d, rwnd: 5466 pr_debug("%s: len:%d, state:%d, rwnd:%d, assoc_id:%d\n",
5473 __func__, len, status.sstat_ 5467 __func__, len, status.sstat_state, status.sstat_rwnd,
5474 status.sstat_assoc_id); 5468 status.sstat_assoc_id);
5475 5469
5476 if (copy_to_user(optval, &status, len 5470 if (copy_to_user(optval, &status, len)) {
5477 retval = -EFAULT; 5471 retval = -EFAULT;
5478 goto out; 5472 goto out;
5479 } 5473 }
5480 5474
5481 out: 5475 out:
5482 return retval; 5476 return retval;
5483 } 5477 }
5484 5478
5485 5479
5486 /* 7.2.2 Peer Address Information (SCTP_GET_P 5480 /* 7.2.2 Peer Address Information (SCTP_GET_PEER_ADDR_INFO)
5487 * 5481 *
5488 * Applications can retrieve information abou 5482 * Applications can retrieve information about a specific peer address
5489 * of an association, including its reachabil 5483 * of an association, including its reachability state, congestion
5490 * window, and retransmission timer values. 5484 * window, and retransmission timer values. This information is
5491 * read-only. 5485 * read-only.
5492 */ 5486 */
5493 static int sctp_getsockopt_peer_addr_info(str 5487 static int sctp_getsockopt_peer_addr_info(struct sock *sk, int len,
5494 cha 5488 char __user *optval,
5495 int 5489 int __user *optlen)
5496 { 5490 {
5497 struct sctp_paddrinfo pinfo; 5491 struct sctp_paddrinfo pinfo;
5498 struct sctp_transport *transport; 5492 struct sctp_transport *transport;
5499 int retval = 0; 5493 int retval = 0;
5500 5494
5501 if (len < sizeof(pinfo)) { 5495 if (len < sizeof(pinfo)) {
5502 retval = -EINVAL; 5496 retval = -EINVAL;
5503 goto out; 5497 goto out;
5504 } 5498 }
5505 5499
5506 len = sizeof(pinfo); 5500 len = sizeof(pinfo);
5507 if (copy_from_user(&pinfo, optval, le 5501 if (copy_from_user(&pinfo, optval, len)) {
5508 retval = -EFAULT; 5502 retval = -EFAULT;
5509 goto out; 5503 goto out;
5510 } 5504 }
5511 5505
5512 transport = sctp_addr_id2transport(sk 5506 transport = sctp_addr_id2transport(sk, &pinfo.spinfo_address,
5513 pi 5507 pinfo.spinfo_assoc_id);
5514 if (!transport) { 5508 if (!transport) {
5515 retval = -EINVAL; 5509 retval = -EINVAL;
5516 goto out; 5510 goto out;
5517 } 5511 }
5518 5512
5519 if (transport->state == SCTP_PF && 5513 if (transport->state == SCTP_PF &&
5520 transport->asoc->pf_expose == SCT 5514 transport->asoc->pf_expose == SCTP_PF_EXPOSE_DISABLE) {
5521 retval = -EACCES; 5515 retval = -EACCES;
5522 goto out; 5516 goto out;
5523 } 5517 }
5524 5518
5525 pinfo.spinfo_assoc_id = sctp_assoc2id 5519 pinfo.spinfo_assoc_id = sctp_assoc2id(transport->asoc);
5526 pinfo.spinfo_state = transport->state 5520 pinfo.spinfo_state = transport->state;
5527 pinfo.spinfo_cwnd = transport->cwnd; 5521 pinfo.spinfo_cwnd = transport->cwnd;
5528 pinfo.spinfo_srtt = transport->srtt; 5522 pinfo.spinfo_srtt = transport->srtt;
5529 pinfo.spinfo_rto = jiffies_to_msecs(t 5523 pinfo.spinfo_rto = jiffies_to_msecs(transport->rto);
5530 pinfo.spinfo_mtu = transport->pathmtu 5524 pinfo.spinfo_mtu = transport->pathmtu;
5531 5525
5532 if (pinfo.spinfo_state == SCTP_UNKNOW 5526 if (pinfo.spinfo_state == SCTP_UNKNOWN)
5533 pinfo.spinfo_state = SCTP_ACT 5527 pinfo.spinfo_state = SCTP_ACTIVE;
5534 5528
5535 if (put_user(len, optlen)) { 5529 if (put_user(len, optlen)) {
5536 retval = -EFAULT; 5530 retval = -EFAULT;
5537 goto out; 5531 goto out;
5538 } 5532 }
5539 5533
5540 if (copy_to_user(optval, &pinfo, len) 5534 if (copy_to_user(optval, &pinfo, len)) {
5541 retval = -EFAULT; 5535 retval = -EFAULT;
5542 goto out; 5536 goto out;
5543 } 5537 }
5544 5538
5545 out: 5539 out:
5546 return retval; 5540 return retval;
5547 } 5541 }
5548 5542
5549 /* 7.1.12 Enable/Disable message fragmentatio 5543 /* 7.1.12 Enable/Disable message fragmentation (SCTP_DISABLE_FRAGMENTS)
5550 * 5544 *
5551 * This option is a on/off flag. If enabled 5545 * This option is a on/off flag. If enabled no SCTP message
5552 * fragmentation will be performed. Instead 5546 * fragmentation will be performed. Instead if a message being sent
5553 * exceeds the current PMTU size, the message 5547 * exceeds the current PMTU size, the message will NOT be sent and
5554 * instead a error will be indicated to the u 5548 * instead a error will be indicated to the user.
5555 */ 5549 */
5556 static int sctp_getsockopt_disable_fragments( 5550 static int sctp_getsockopt_disable_fragments(struct sock *sk, int len,
5557 char 5551 char __user *optval, int __user *optlen)
5558 { 5552 {
5559 int val; 5553 int val;
5560 5554
5561 if (len < sizeof(int)) 5555 if (len < sizeof(int))
5562 return -EINVAL; 5556 return -EINVAL;
5563 5557
5564 len = sizeof(int); 5558 len = sizeof(int);
5565 val = (sctp_sk(sk)->disable_fragments 5559 val = (sctp_sk(sk)->disable_fragments == 1);
5566 if (put_user(len, optlen)) 5560 if (put_user(len, optlen))
5567 return -EFAULT; 5561 return -EFAULT;
5568 if (copy_to_user(optval, &val, len)) 5562 if (copy_to_user(optval, &val, len))
5569 return -EFAULT; 5563 return -EFAULT;
5570 return 0; 5564 return 0;
5571 } 5565 }
5572 5566
5573 /* 7.1.15 Set notification and ancillary even 5567 /* 7.1.15 Set notification and ancillary events (SCTP_EVENTS)
5574 * 5568 *
5575 * This socket option is used to specify vari 5569 * This socket option is used to specify various notifications and
5576 * ancillary data the user wishes to receive. 5570 * ancillary data the user wishes to receive.
5577 */ 5571 */
5578 static int sctp_getsockopt_events(struct sock 5572 static int sctp_getsockopt_events(struct sock *sk, int len, char __user *optval,
5579 int __user 5573 int __user *optlen)
5580 { 5574 {
5581 struct sctp_event_subscribe subscribe 5575 struct sctp_event_subscribe subscribe;
5582 __u8 *sn_type = (__u8 *)&subscribe; 5576 __u8 *sn_type = (__u8 *)&subscribe;
5583 int i; 5577 int i;
5584 5578
5585 if (len == 0) 5579 if (len == 0)
5586 return -EINVAL; 5580 return -EINVAL;
5587 if (len > sizeof(struct sctp_event_su 5581 if (len > sizeof(struct sctp_event_subscribe))
5588 len = sizeof(struct sctp_even 5582 len = sizeof(struct sctp_event_subscribe);
5589 if (put_user(len, optlen)) 5583 if (put_user(len, optlen))
5590 return -EFAULT; 5584 return -EFAULT;
5591 5585
5592 for (i = 0; i < len; i++) 5586 for (i = 0; i < len; i++)
5593 sn_type[i] = sctp_ulpevent_ty 5587 sn_type[i] = sctp_ulpevent_type_enabled(sctp_sk(sk)->subscribe,
5594 5588 SCTP_SN_TYPE_BASE + i);
5595 5589
5596 if (copy_to_user(optval, &subscribe, 5590 if (copy_to_user(optval, &subscribe, len))
5597 return -EFAULT; 5591 return -EFAULT;
5598 5592
5599 return 0; 5593 return 0;
5600 } 5594 }
5601 5595
5602 /* 7.1.8 Automatic Close of associations (SCT 5596 /* 7.1.8 Automatic Close of associations (SCTP_AUTOCLOSE)
5603 * 5597 *
5604 * This socket option is applicable to the UD 5598 * This socket option is applicable to the UDP-style socket only. When
5605 * set it will cause associations that are id 5599 * set it will cause associations that are idle for more than the
5606 * specified number of seconds to automatical 5600 * specified number of seconds to automatically close. An association
5607 * being idle is defined an association that 5601 * being idle is defined an association that has NOT sent or received
5608 * user data. The special value of '' indica 5602 * user data. The special value of '' indicates that no automatic
5609 * close of any associations should be perfor 5603 * close of any associations should be performed. The option expects an
5610 * integer defining the number of seconds of 5604 * integer defining the number of seconds of idle time before an
5611 * association is closed. 5605 * association is closed.
5612 */ 5606 */
5613 static int sctp_getsockopt_autoclose(struct s 5607 static int sctp_getsockopt_autoclose(struct sock *sk, int len, char __user *optval, int __user *optlen)
5614 { 5608 {
5615 /* Applicable to UDP-style socket onl 5609 /* Applicable to UDP-style socket only */
5616 if (sctp_style(sk, TCP)) 5610 if (sctp_style(sk, TCP))
5617 return -EOPNOTSUPP; 5611 return -EOPNOTSUPP;
5618 if (len < sizeof(int)) 5612 if (len < sizeof(int))
5619 return -EINVAL; 5613 return -EINVAL;
5620 len = sizeof(int); 5614 len = sizeof(int);
5621 if (put_user(len, optlen)) 5615 if (put_user(len, optlen))
5622 return -EFAULT; 5616 return -EFAULT;
5623 if (put_user(sctp_sk(sk)->autoclose, 5617 if (put_user(sctp_sk(sk)->autoclose, (int __user *)optval))
5624 return -EFAULT; 5618 return -EFAULT;
5625 return 0; 5619 return 0;
5626 } 5620 }
5627 5621
5628 /* Helper routine to branch off an associatio 5622 /* Helper routine to branch off an association to a new socket. */
5629 int sctp_do_peeloff(struct sock *sk, sctp_ass 5623 int sctp_do_peeloff(struct sock *sk, sctp_assoc_t id, struct socket **sockp)
5630 { 5624 {
5631 struct sctp_association *asoc = sctp_ 5625 struct sctp_association *asoc = sctp_id2assoc(sk, id);
5632 struct sctp_sock *sp = sctp_sk(sk); 5626 struct sctp_sock *sp = sctp_sk(sk);
5633 struct socket *sock; 5627 struct socket *sock;
5634 int err = 0; 5628 int err = 0;
5635 5629
5636 /* Do not peel off from one netns to 5630 /* Do not peel off from one netns to another one. */
5637 if (!net_eq(current->nsproxy->net_ns, 5631 if (!net_eq(current->nsproxy->net_ns, sock_net(sk)))
5638 return -EINVAL; 5632 return -EINVAL;
5639 5633
5640 if (!asoc) 5634 if (!asoc)
5641 return -EINVAL; 5635 return -EINVAL;
5642 5636
5643 /* An association cannot be branched 5637 /* An association cannot be branched off from an already peeled-off
5644 * socket, nor is this supported for 5638 * socket, nor is this supported for tcp style sockets.
5645 */ 5639 */
5646 if (!sctp_style(sk, UDP)) 5640 if (!sctp_style(sk, UDP))
5647 return -EINVAL; 5641 return -EINVAL;
5648 5642
5649 /* Create a new socket. */ 5643 /* Create a new socket. */
5650 err = sock_create(sk->sk_family, SOCK 5644 err = sock_create(sk->sk_family, SOCK_SEQPACKET, IPPROTO_SCTP, &sock);
5651 if (err < 0) 5645 if (err < 0)
5652 return err; 5646 return err;
5653 5647
5654 sctp_copy_sock(sock->sk, sk, asoc); 5648 sctp_copy_sock(sock->sk, sk, asoc);
5655 5649
5656 /* Make peeled-off sockets more like 5650 /* Make peeled-off sockets more like 1-1 accepted sockets.
5657 * Set the daddr and initialize id to 5651 * Set the daddr and initialize id to something more random and also
5658 * copy over any ip options. 5652 * copy over any ip options.
5659 */ 5653 */
5660 sp->pf->to_sk_daddr(&asoc->peer.prima 5654 sp->pf->to_sk_daddr(&asoc->peer.primary_addr, sock->sk);
5661 sp->pf->copy_ip_options(sk, sock->sk) 5655 sp->pf->copy_ip_options(sk, sock->sk);
5662 5656
5663 /* Populate the fields of the newsk f 5657 /* Populate the fields of the newsk from the oldsk and migrate the
5664 * asoc to the newsk. 5658 * asoc to the newsk.
5665 */ 5659 */
5666 err = sctp_sock_migrate(sk, sock->sk, 5660 err = sctp_sock_migrate(sk, sock->sk, asoc,
5667 SCTP_SOCKET_U 5661 SCTP_SOCKET_UDP_HIGH_BANDWIDTH);
5668 if (err) { 5662 if (err) {
5669 sock_release(sock); 5663 sock_release(sock);
5670 sock = NULL; 5664 sock = NULL;
5671 } 5665 }
5672 5666
5673 *sockp = sock; 5667 *sockp = sock;
5674 5668
5675 return err; 5669 return err;
5676 } 5670 }
5677 EXPORT_SYMBOL(sctp_do_peeloff); 5671 EXPORT_SYMBOL(sctp_do_peeloff);
5678 5672
5679 static int sctp_getsockopt_peeloff_common(str 5673 static int sctp_getsockopt_peeloff_common(struct sock *sk, sctp_peeloff_arg_t *peeloff,
5680 str 5674 struct file **newfile, unsigned flags)
5681 { 5675 {
5682 struct socket *newsock; 5676 struct socket *newsock;
5683 int retval; 5677 int retval;
5684 5678
5685 retval = sctp_do_peeloff(sk, peeloff- 5679 retval = sctp_do_peeloff(sk, peeloff->associd, &newsock);
5686 if (retval < 0) 5680 if (retval < 0)
5687 goto out; 5681 goto out;
5688 5682
5689 /* Map the socket to an unused fd tha 5683 /* Map the socket to an unused fd that can be returned to the user. */
5690 retval = get_unused_fd_flags(flags & 5684 retval = get_unused_fd_flags(flags & SOCK_CLOEXEC);
5691 if (retval < 0) { 5685 if (retval < 0) {
5692 sock_release(newsock); 5686 sock_release(newsock);
5693 goto out; 5687 goto out;
5694 } 5688 }
5695 5689
5696 *newfile = sock_alloc_file(newsock, 0 5690 *newfile = sock_alloc_file(newsock, 0, NULL);
5697 if (IS_ERR(*newfile)) { 5691 if (IS_ERR(*newfile)) {
5698 put_unused_fd(retval); 5692 put_unused_fd(retval);
5699 retval = PTR_ERR(*newfile); 5693 retval = PTR_ERR(*newfile);
5700 *newfile = NULL; 5694 *newfile = NULL;
5701 return retval; 5695 return retval;
5702 } 5696 }
5703 5697
5704 pr_debug("%s: sk:%p, newsk:%p, sd:%d\ 5698 pr_debug("%s: sk:%p, newsk:%p, sd:%d\n", __func__, sk, newsock->sk,
5705 retval); 5699 retval);
5706 5700
5707 peeloff->sd = retval; 5701 peeloff->sd = retval;
5708 5702
5709 if (flags & SOCK_NONBLOCK) 5703 if (flags & SOCK_NONBLOCK)
5710 (*newfile)->f_flags |= O_NONB 5704 (*newfile)->f_flags |= O_NONBLOCK;
5711 out: 5705 out:
5712 return retval; 5706 return retval;
5713 } 5707 }
5714 5708
5715 static int sctp_getsockopt_peeloff(struct soc 5709 static int sctp_getsockopt_peeloff(struct sock *sk, int len, char __user *optval, int __user *optlen)
5716 { 5710 {
5717 sctp_peeloff_arg_t peeloff; 5711 sctp_peeloff_arg_t peeloff;
5718 struct file *newfile = NULL; 5712 struct file *newfile = NULL;
5719 int retval = 0; 5713 int retval = 0;
5720 5714
5721 if (len < sizeof(sctp_peeloff_arg_t)) 5715 if (len < sizeof(sctp_peeloff_arg_t))
5722 return -EINVAL; 5716 return -EINVAL;
5723 len = sizeof(sctp_peeloff_arg_t); 5717 len = sizeof(sctp_peeloff_arg_t);
5724 if (copy_from_user(&peeloff, optval, 5718 if (copy_from_user(&peeloff, optval, len))
5725 return -EFAULT; 5719 return -EFAULT;
5726 5720
5727 retval = sctp_getsockopt_peeloff_comm 5721 retval = sctp_getsockopt_peeloff_common(sk, &peeloff, &newfile, 0);
5728 if (retval < 0) 5722 if (retval < 0)
5729 goto out; 5723 goto out;
5730 5724
5731 /* Return the fd mapped to the new so 5725 /* Return the fd mapped to the new socket. */
5732 if (put_user(len, optlen)) { 5726 if (put_user(len, optlen)) {
5733 fput(newfile); 5727 fput(newfile);
5734 put_unused_fd(retval); 5728 put_unused_fd(retval);
5735 return -EFAULT; 5729 return -EFAULT;
5736 } 5730 }
5737 5731
5738 if (copy_to_user(optval, &peeloff, le 5732 if (copy_to_user(optval, &peeloff, len)) {
5739 fput(newfile); 5733 fput(newfile);
5740 put_unused_fd(retval); 5734 put_unused_fd(retval);
5741 return -EFAULT; 5735 return -EFAULT;
5742 } 5736 }
5743 fd_install(retval, newfile); 5737 fd_install(retval, newfile);
5744 out: 5738 out:
5745 return retval; 5739 return retval;
5746 } 5740 }
5747 5741
5748 static int sctp_getsockopt_peeloff_flags(stru 5742 static int sctp_getsockopt_peeloff_flags(struct sock *sk, int len,
5749 char 5743 char __user *optval, int __user *optlen)
5750 { 5744 {
5751 sctp_peeloff_flags_arg_t peeloff; 5745 sctp_peeloff_flags_arg_t peeloff;
5752 struct file *newfile = NULL; 5746 struct file *newfile = NULL;
5753 int retval = 0; 5747 int retval = 0;
5754 5748
5755 if (len < sizeof(sctp_peeloff_flags_a 5749 if (len < sizeof(sctp_peeloff_flags_arg_t))
5756 return -EINVAL; 5750 return -EINVAL;
5757 len = sizeof(sctp_peeloff_flags_arg_t 5751 len = sizeof(sctp_peeloff_flags_arg_t);
5758 if (copy_from_user(&peeloff, optval, 5752 if (copy_from_user(&peeloff, optval, len))
5759 return -EFAULT; 5753 return -EFAULT;
5760 5754
5761 retval = sctp_getsockopt_peeloff_comm 5755 retval = sctp_getsockopt_peeloff_common(sk, &peeloff.p_arg,
5762 5756 &newfile, peeloff.flags);
5763 if (retval < 0) 5757 if (retval < 0)
5764 goto out; 5758 goto out;
5765 5759
5766 /* Return the fd mapped to the new so 5760 /* Return the fd mapped to the new socket. */
5767 if (put_user(len, optlen)) { 5761 if (put_user(len, optlen)) {
5768 fput(newfile); 5762 fput(newfile);
5769 put_unused_fd(retval); 5763 put_unused_fd(retval);
5770 return -EFAULT; 5764 return -EFAULT;
5771 } 5765 }
5772 5766
5773 if (copy_to_user(optval, &peeloff, le 5767 if (copy_to_user(optval, &peeloff, len)) {
5774 fput(newfile); 5768 fput(newfile);
5775 put_unused_fd(retval); 5769 put_unused_fd(retval);
5776 return -EFAULT; 5770 return -EFAULT;
5777 } 5771 }
5778 fd_install(retval, newfile); 5772 fd_install(retval, newfile);
5779 out: 5773 out:
5780 return retval; 5774 return retval;
5781 } 5775 }
5782 5776
5783 /* 7.1.13 Peer Address Parameters (SCTP_PEER_ 5777 /* 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS)
5784 * 5778 *
5785 * Applications can enable or disable heartbe 5779 * Applications can enable or disable heartbeats for any peer address of
5786 * an association, modify an address's heartb 5780 * an association, modify an address's heartbeat interval, force a
5787 * heartbeat to be sent immediately, and adju 5781 * heartbeat to be sent immediately, and adjust the address's maximum
5788 * number of retransmissions sent before an a 5782 * number of retransmissions sent before an address is considered
5789 * unreachable. The following structure is u 5783 * unreachable. The following structure is used to access and modify an
5790 * address's parameters: 5784 * address's parameters:
5791 * 5785 *
5792 * struct sctp_paddrparams { 5786 * struct sctp_paddrparams {
5793 * sctp_assoc_t spp_assoc_id; 5787 * sctp_assoc_t spp_assoc_id;
5794 * struct sockaddr_storage spp_address; 5788 * struct sockaddr_storage spp_address;
5795 * uint32_t spp_hbinterval 5789 * uint32_t spp_hbinterval;
5796 * uint16_t spp_pathmaxrxt 5790 * uint16_t spp_pathmaxrxt;
5797 * uint32_t spp_pathmtu; 5791 * uint32_t spp_pathmtu;
5798 * uint32_t spp_sackdelay; 5792 * uint32_t spp_sackdelay;
5799 * uint32_t spp_flags; 5793 * uint32_t spp_flags;
5800 * }; 5794 * };
5801 * 5795 *
5802 * spp_assoc_id - (one-to-many style soc 5796 * spp_assoc_id - (one-to-many style socket) This is filled in the
5803 * application, and ident 5797 * application, and identifies the association for
5804 * this query. 5798 * this query.
5805 * spp_address - This specifies which a 5799 * spp_address - This specifies which address is of interest.
5806 * spp_hbinterval - This contains the valu 5800 * spp_hbinterval - This contains the value of the heartbeat interval,
5807 * in milliseconds. If a 5801 * in milliseconds. If a value of zero
5808 * is present in this fie 5802 * is present in this field then no changes are to
5809 * be made to this parame 5803 * be made to this parameter.
5810 * spp_pathmaxrxt - This contains the maxi 5804 * spp_pathmaxrxt - This contains the maximum number of
5811 * retransmissions before 5805 * retransmissions before this address shall be
5812 * considered unreachable 5806 * considered unreachable. If a value of zero
5813 * is present in this fie 5807 * is present in this field then no changes are to
5814 * be made to this parame 5808 * be made to this parameter.
5815 * spp_pathmtu - When Path MTU discover 5809 * spp_pathmtu - When Path MTU discovery is disabled the value
5816 * specified here will be 5810 * specified here will be the "fixed" path mtu.
5817 * Note that if the spp_a 5811 * Note that if the spp_address field is empty
5818 * then all associations 5812 * then all associations on this address will
5819 * have this fixed path m 5813 * have this fixed path mtu set upon them.
5820 * 5814 *
5821 * spp_sackdelay - When delayed sack is e 5815 * spp_sackdelay - When delayed sack is enabled, this value specifies
5822 * the number of millisec 5816 * the number of milliseconds that sacks will be delayed
5823 * for. This value will a 5817 * for. This value will apply to all addresses of an
5824 * association if the spp 5818 * association if the spp_address field is empty. Note
5825 * also, that if delayed 5819 * also, that if delayed sack is enabled and this
5826 * value is set to 0, no 5820 * value is set to 0, no change is made to the last
5827 * recorded delayed sack 5821 * recorded delayed sack timer value.
5828 * 5822 *
5829 * spp_flags - These flags are used t 5823 * spp_flags - These flags are used to control various features
5830 * on an association. The 5824 * on an association. The flag field may contain
5831 * zero or more of the fo 5825 * zero or more of the following options.
5832 * 5826 *
5833 * SPP_HB_ENABLE - Enabl 5827 * SPP_HB_ENABLE - Enable heartbeats on the
5834 * specified address. Not 5828 * specified address. Note that if the address
5835 * field is empty all add 5829 * field is empty all addresses for the association
5836 * have heartbeats enable 5830 * have heartbeats enabled upon them.
5837 * 5831 *
5838 * SPP_HB_DISABLE - Disab 5832 * SPP_HB_DISABLE - Disable heartbeats on the
5839 * speicifed address. Not 5833 * speicifed address. Note that if the address
5840 * field is empty all add 5834 * field is empty all addresses for the association
5841 * will have their heartb 5835 * will have their heartbeats disabled. Note also
5842 * that SPP_HB_ENABLE and 5836 * that SPP_HB_ENABLE and SPP_HB_DISABLE are
5843 * mutually exclusive, on 5837 * mutually exclusive, only one of these two should
5844 * be specified. Enabling 5838 * be specified. Enabling both fields will have
5845 * undetermined results. 5839 * undetermined results.
5846 * 5840 *
5847 * SPP_HB_DEMAND - Reques 5841 * SPP_HB_DEMAND - Request a user initiated heartbeat
5848 * to be made immediately 5842 * to be made immediately.
5849 * 5843 *
5850 * SPP_PMTUD_ENABLE - Thi 5844 * SPP_PMTUD_ENABLE - This field will enable PMTU
5851 * discovery upon the spe 5845 * discovery upon the specified address. Note that
5852 * if the address feild i 5846 * if the address feild is empty then all addresses
5853 * on the association are 5847 * on the association are effected.
5854 * 5848 *
5855 * SPP_PMTUD_DISABLE - Th 5849 * SPP_PMTUD_DISABLE - This field will disable PMTU
5856 * discovery upon the spe 5850 * discovery upon the specified address. Note that
5857 * if the address feild i 5851 * if the address feild is empty then all addresses
5858 * on the association are 5852 * on the association are effected. Not also that
5859 * SPP_PMTUD_ENABLE and S 5853 * SPP_PMTUD_ENABLE and SPP_PMTUD_DISABLE are mutually
5860 * exclusive. Enabling bo 5854 * exclusive. Enabling both will have undetermined
5861 * results. 5855 * results.
5862 * 5856 *
5863 * SPP_SACKDELAY_ENABLE - 5857 * SPP_SACKDELAY_ENABLE - Setting this flag turns
5864 * on delayed sack. The t 5858 * on delayed sack. The time specified in spp_sackdelay
5865 * is used to specify the 5859 * is used to specify the sack delay for this address. Note
5866 * that if spp_address is 5860 * that if spp_address is empty then all addresses will
5867 * enable delayed sack an 5861 * enable delayed sack and take on the sack delay
5868 * value specified in spp 5862 * value specified in spp_sackdelay.
5869 * SPP_SACKDELAY_DISABLE 5863 * SPP_SACKDELAY_DISABLE - Setting this flag turns
5870 * off delayed sack. If t 5864 * off delayed sack. If the spp_address field is blank then
5871 * delayed sack is disabl 5865 * delayed sack is disabled for the entire association. Note
5872 * also that this field i 5866 * also that this field is mutually exclusive to
5873 * SPP_SACKDELAY_ENABLE, 5867 * SPP_SACKDELAY_ENABLE, setting both will have undefined
5874 * results. 5868 * results.
5875 * 5869 *
5876 * SPP_IPV6_FLOWLABEL: S 5870 * SPP_IPV6_FLOWLABEL: Setting this flag enables the
5877 * setting of the IPV6 fl 5871 * setting of the IPV6 flow label value. The value is
5878 * contained in the spp_i 5872 * contained in the spp_ipv6_flowlabel field.
5879 * Upon retrieval, this f 5873 * Upon retrieval, this flag will be set to indicate that
5880 * the spp_ipv6_flowlabel 5874 * the spp_ipv6_flowlabel field has a valid value returned.
5881 * If a specific destinat 5875 * If a specific destination address is set (in the
5882 * spp_address field), th 5876 * spp_address field), then the value returned is that of
5883 * the address. If just 5877 * the address. If just an association is specified (and
5884 * no address), then the 5878 * no address), then the association's default flow label
5885 * is returned. If neith 5879 * is returned. If neither an association nor a destination
5886 * is specified, then the 5880 * is specified, then the socket's default flow label is
5887 * returned. For non-IPv 5881 * returned. For non-IPv6 sockets, this flag will be left
5888 * cleared. 5882 * cleared.
5889 * 5883 *
5890 * SPP_DSCP: Setting thi 5884 * SPP_DSCP: Setting this flag enables the setting of the
5891 * Differentiated Service 5885 * Differentiated Services Code Point (DSCP) value
5892 * associated with either 5886 * associated with either the association or a specific
5893 * address. The value is 5887 * address. The value is obtained in the spp_dscp field.
5894 * Upon retrieval, this f 5888 * Upon retrieval, this flag will be set to indicate that
5895 * the spp_dscp field has 5889 * the spp_dscp field has a valid value returned. If a
5896 * specific destination a 5890 * specific destination address is set when called (in the
5897 * spp_address field), th 5891 * spp_address field), then that specific destination
5898 * address's DSCP value i 5892 * address's DSCP value is returned. If just an association
5899 * is specified, then the 5893 * is specified, then the association's default DSCP is
5900 * returned. If neither 5894 * returned. If neither an association nor a destination is
5901 * specified, then the so 5895 * specified, then the socket's default DSCP is returned.
5902 * 5896 *
5903 * spp_ipv6_flowlabel 5897 * spp_ipv6_flowlabel
5904 * - This field is used in 5898 * - This field is used in conjunction with the
5905 * SPP_IPV6_FLOWLABEL fla 5899 * SPP_IPV6_FLOWLABEL flag and contains the IPv6 flow label.
5906 * The 20 least significa 5900 * The 20 least significant bits are used for the flow
5907 * label. This setting h 5901 * label. This setting has precedence over any IPv6-layer
5908 * setting. 5902 * setting.
5909 * 5903 *
5910 * spp_dscp - This field is used in 5904 * spp_dscp - This field is used in conjunction with the SPP_DSCP flag
5911 * and contains the DSCP. 5905 * and contains the DSCP. The 6 most significant bits are
5912 * used for the DSCP. Th 5906 * used for the DSCP. This setting has precedence over any
5913 * IPv4- or IPv6- layer s 5907 * IPv4- or IPv6- layer setting.
5914 */ 5908 */
5915 static int sctp_getsockopt_peer_addr_params(s 5909 static int sctp_getsockopt_peer_addr_params(struct sock *sk, int len,
5916 c 5910 char __user *optval, int __user *optlen)
5917 { 5911 {
5918 struct sctp_paddrparams params; 5912 struct sctp_paddrparams params;
5919 struct sctp_transport *trans = NULL 5913 struct sctp_transport *trans = NULL;
5920 struct sctp_association *asoc = NULL; 5914 struct sctp_association *asoc = NULL;
5921 struct sctp_sock *sp = sctp_sk 5915 struct sctp_sock *sp = sctp_sk(sk);
5922 5916
5923 if (len >= sizeof(params)) 5917 if (len >= sizeof(params))
5924 len = sizeof(params); 5918 len = sizeof(params);
5925 else if (len >= ALIGN(offsetof(struct 5919 else if (len >= ALIGN(offsetof(struct sctp_paddrparams,
5926 spp_ip 5920 spp_ipv6_flowlabel), 4))
5927 len = ALIGN(offsetof(struct s 5921 len = ALIGN(offsetof(struct sctp_paddrparams,
5928 spp_ipv6 5922 spp_ipv6_flowlabel), 4);
5929 else 5923 else
5930 return -EINVAL; 5924 return -EINVAL;
5931 5925
5932 if (copy_from_user(¶ms, optval, l 5926 if (copy_from_user(¶ms, optval, len))
5933 return -EFAULT; 5927 return -EFAULT;
5934 5928
5935 /* If an address other than INADDR_AN 5929 /* If an address other than INADDR_ANY is specified, and
5936 * no transport is found, then the re 5930 * no transport is found, then the request is invalid.
5937 */ 5931 */
5938 if (!sctp_is_any(sk, (union sctp_addr 5932 if (!sctp_is_any(sk, (union sctp_addr *)¶ms.spp_address)) {
5939 trans = sctp_addr_id2transpor 5933 trans = sctp_addr_id2transport(sk, ¶ms.spp_address,
5940 5934 params.spp_assoc_id);
5941 if (!trans) { 5935 if (!trans) {
5942 pr_debug("%s: failed 5936 pr_debug("%s: failed no transport\n", __func__);
5943 return -EINVAL; 5937 return -EINVAL;
5944 } 5938 }
5945 } 5939 }
5946 5940
5947 /* Get association, if assoc_id != SC 5941 /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the
5948 * socket is a one to many style sock 5942 * socket is a one to many style socket, and an association
5949 * was not found, then the id was inv 5943 * was not found, then the id was invalid.
5950 */ 5944 */
5951 asoc = sctp_id2assoc(sk, params.spp_a 5945 asoc = sctp_id2assoc(sk, params.spp_assoc_id);
5952 if (!asoc && params.spp_assoc_id != S 5946 if (!asoc && params.spp_assoc_id != SCTP_FUTURE_ASSOC &&
5953 sctp_style(sk, UDP)) { 5947 sctp_style(sk, UDP)) {
5954 pr_debug("%s: failed no assoc 5948 pr_debug("%s: failed no association\n", __func__);
5955 return -EINVAL; 5949 return -EINVAL;
5956 } 5950 }
5957 5951
5958 if (trans) { 5952 if (trans) {
5959 /* Fetch transport values. */ 5953 /* Fetch transport values. */
5960 params.spp_hbinterval = jiffi 5954 params.spp_hbinterval = jiffies_to_msecs(trans->hbinterval);
5961 params.spp_pathmtu = trans 5955 params.spp_pathmtu = trans->pathmtu;
5962 params.spp_pathmaxrxt = trans 5956 params.spp_pathmaxrxt = trans->pathmaxrxt;
5963 params.spp_sackdelay = jiffi 5957 params.spp_sackdelay = jiffies_to_msecs(trans->sackdelay);
5964 5958
5965 /*draft-11 doesn't say what t 5959 /*draft-11 doesn't say what to return in spp_flags*/
5966 params.spp_flags = trans 5960 params.spp_flags = trans->param_flags;
5967 if (trans->flowlabel & SCTP_F 5961 if (trans->flowlabel & SCTP_FLOWLABEL_SET_MASK) {
5968 params.spp_ipv6_flowl 5962 params.spp_ipv6_flowlabel = trans->flowlabel &
5969 5963 SCTP_FLOWLABEL_VAL_MASK;
5970 params.spp_flags |= S 5964 params.spp_flags |= SPP_IPV6_FLOWLABEL;
5971 } 5965 }
5972 if (trans->dscp & SCTP_DSCP_S 5966 if (trans->dscp & SCTP_DSCP_SET_MASK) {
5973 params.spp_dscp = tra 5967 params.spp_dscp = trans->dscp & SCTP_DSCP_VAL_MASK;
5974 params.spp_flags |= S 5968 params.spp_flags |= SPP_DSCP;
5975 } 5969 }
5976 } else if (asoc) { 5970 } else if (asoc) {
5977 /* Fetch association values. 5971 /* Fetch association values. */
5978 params.spp_hbinterval = jiffi 5972 params.spp_hbinterval = jiffies_to_msecs(asoc->hbinterval);
5979 params.spp_pathmtu = asoc- 5973 params.spp_pathmtu = asoc->pathmtu;
5980 params.spp_pathmaxrxt = asoc- 5974 params.spp_pathmaxrxt = asoc->pathmaxrxt;
5981 params.spp_sackdelay = jiffi 5975 params.spp_sackdelay = jiffies_to_msecs(asoc->sackdelay);
5982 5976
5983 /*draft-11 doesn't say what t 5977 /*draft-11 doesn't say what to return in spp_flags*/
5984 params.spp_flags = asoc- 5978 params.spp_flags = asoc->param_flags;
5985 if (asoc->flowlabel & SCTP_FL 5979 if (asoc->flowlabel & SCTP_FLOWLABEL_SET_MASK) {
5986 params.spp_ipv6_flowl 5980 params.spp_ipv6_flowlabel = asoc->flowlabel &
5987 5981 SCTP_FLOWLABEL_VAL_MASK;
5988 params.spp_flags |= S 5982 params.spp_flags |= SPP_IPV6_FLOWLABEL;
5989 } 5983 }
5990 if (asoc->dscp & SCTP_DSCP_SE 5984 if (asoc->dscp & SCTP_DSCP_SET_MASK) {
5991 params.spp_dscp = aso 5985 params.spp_dscp = asoc->dscp & SCTP_DSCP_VAL_MASK;
5992 params.spp_flags |= S 5986 params.spp_flags |= SPP_DSCP;
5993 } 5987 }
5994 } else { 5988 } else {
5995 /* Fetch socket values. */ 5989 /* Fetch socket values. */
5996 params.spp_hbinterval = sp->h 5990 params.spp_hbinterval = sp->hbinterval;
5997 params.spp_pathmtu = sp->p 5991 params.spp_pathmtu = sp->pathmtu;
5998 params.spp_sackdelay = sp->s 5992 params.spp_sackdelay = sp->sackdelay;
5999 params.spp_pathmaxrxt = sp->p 5993 params.spp_pathmaxrxt = sp->pathmaxrxt;
6000 5994
6001 /*draft-11 doesn't say what t 5995 /*draft-11 doesn't say what to return in spp_flags*/
6002 params.spp_flags = sp->p 5996 params.spp_flags = sp->param_flags;
6003 if (sp->flowlabel & SCTP_FLOW 5997 if (sp->flowlabel & SCTP_FLOWLABEL_SET_MASK) {
6004 params.spp_ipv6_flowl 5998 params.spp_ipv6_flowlabel = sp->flowlabel &
6005 5999 SCTP_FLOWLABEL_VAL_MASK;
6006 params.spp_flags |= S 6000 params.spp_flags |= SPP_IPV6_FLOWLABEL;
6007 } 6001 }
6008 if (sp->dscp & SCTP_DSCP_SET_ 6002 if (sp->dscp & SCTP_DSCP_SET_MASK) {
6009 params.spp_dscp = sp- 6003 params.spp_dscp = sp->dscp & SCTP_DSCP_VAL_MASK;
6010 params.spp_flags |= S 6004 params.spp_flags |= SPP_DSCP;
6011 } 6005 }
6012 } 6006 }
6013 6007
6014 if (copy_to_user(optval, ¶ms, len 6008 if (copy_to_user(optval, ¶ms, len))
6015 return -EFAULT; 6009 return -EFAULT;
6016 6010
6017 if (put_user(len, optlen)) 6011 if (put_user(len, optlen))
6018 return -EFAULT; 6012 return -EFAULT;
6019 6013
6020 return 0; 6014 return 0;
6021 } 6015 }
6022 6016
6023 /* 6017 /*
6024 * 7.1.23. Get or set delayed ack timer (SCT 6018 * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
6025 * 6019 *
6026 * This option will effect the way delayed ac 6020 * This option will effect the way delayed acks are performed. This
6027 * option allows you to get or set the delaye 6021 * option allows you to get or set the delayed ack time, in
6028 * milliseconds. It also allows changing the 6022 * milliseconds. It also allows changing the delayed ack frequency.
6029 * Changing the frequency to 1 disables the d 6023 * Changing the frequency to 1 disables the delayed sack algorithm. If
6030 * the assoc_id is 0, then this sets or gets 6024 * the assoc_id is 0, then this sets or gets the endpoints default
6031 * values. If the assoc_id field is non-zero 6025 * values. If the assoc_id field is non-zero, then the set or get
6032 * effects the specified association for the 6026 * effects the specified association for the one to many model (the
6033 * assoc_id field is ignored by the one to on 6027 * assoc_id field is ignored by the one to one model). Note that if
6034 * sack_delay or sack_freq are 0 when setting 6028 * sack_delay or sack_freq are 0 when setting this option, then the
6035 * current values will remain unchanged. 6029 * current values will remain unchanged.
6036 * 6030 *
6037 * struct sctp_sack_info { 6031 * struct sctp_sack_info {
6038 * sctp_assoc_t sack_assoc_id; 6032 * sctp_assoc_t sack_assoc_id;
6039 * uint32_t sack_delay; 6033 * uint32_t sack_delay;
6040 * uint32_t sack_freq; 6034 * uint32_t sack_freq;
6041 * }; 6035 * };
6042 * 6036 *
6043 * sack_assoc_id - This parameter, indicates 6037 * sack_assoc_id - This parameter, indicates which association the user
6044 * is performing an action upon. Note tha 6038 * is performing an action upon. Note that if this field's value is
6045 * zero then the endpoints default value i 6039 * zero then the endpoints default value is changed (effecting future
6046 * associations only). 6040 * associations only).
6047 * 6041 *
6048 * sack_delay - This parameter contains the 6042 * sack_delay - This parameter contains the number of milliseconds that
6049 * the user is requesting the delayed ACK 6043 * the user is requesting the delayed ACK timer be set to. Note that
6050 * this value is defined in the standard t 6044 * this value is defined in the standard to be between 200 and 500
6051 * milliseconds. 6045 * milliseconds.
6052 * 6046 *
6053 * sack_freq - This parameter contains the n 6047 * sack_freq - This parameter contains the number of packets that must
6054 * be received before a sack is sent witho 6048 * be received before a sack is sent without waiting for the delay
6055 * timer to expire. The default value for 6049 * timer to expire. The default value for this is 2, setting this
6056 * value to 1 will disable the delayed sac 6050 * value to 1 will disable the delayed sack algorithm.
6057 */ 6051 */
6058 static int sctp_getsockopt_delayed_ack(struct 6052 static int sctp_getsockopt_delayed_ack(struct sock *sk, int len,
6059 c 6053 char __user *optval,
6060 i 6054 int __user *optlen)
6061 { 6055 {
6062 struct sctp_sack_info params; 6056 struct sctp_sack_info params;
6063 struct sctp_association *asoc = NULL; 6057 struct sctp_association *asoc = NULL;
6064 struct sctp_sock *sp = sctp_sk 6058 struct sctp_sock *sp = sctp_sk(sk);
6065 6059
6066 if (len >= sizeof(struct sctp_sack_in 6060 if (len >= sizeof(struct sctp_sack_info)) {
6067 len = sizeof(struct sctp_sack 6061 len = sizeof(struct sctp_sack_info);
6068 6062
6069 if (copy_from_user(¶ms, o 6063 if (copy_from_user(¶ms, optval, len))
6070 return -EFAULT; 6064 return -EFAULT;
6071 } else if (len == sizeof(struct sctp_ 6065 } else if (len == sizeof(struct sctp_assoc_value)) {
6072 pr_warn_ratelimited(DEPRECATE 6066 pr_warn_ratelimited(DEPRECATED
6073 "%s (pid 6067 "%s (pid %d) "
6074 "Use of s 6068 "Use of struct sctp_assoc_value in delayed_ack socket option.\n"
6075 "Use stru 6069 "Use struct sctp_sack_info instead\n",
6076 current-> 6070 current->comm, task_pid_nr(current));
6077 if (copy_from_user(¶ms, o 6071 if (copy_from_user(¶ms, optval, len))
6078 return -EFAULT; 6072 return -EFAULT;
6079 } else 6073 } else
6080 return -EINVAL; 6074 return -EINVAL;
6081 6075
6082 /* Get association, if sack_assoc_id 6076 /* Get association, if sack_assoc_id != SCTP_FUTURE_ASSOC and the
6083 * socket is a one to many style sock 6077 * socket is a one to many style socket, and an association
6084 * was not found, then the id was inv 6078 * was not found, then the id was invalid.
6085 */ 6079 */
6086 asoc = sctp_id2assoc(sk, params.sack_ 6080 asoc = sctp_id2assoc(sk, params.sack_assoc_id);
6087 if (!asoc && params.sack_assoc_id != 6081 if (!asoc && params.sack_assoc_id != SCTP_FUTURE_ASSOC &&
6088 sctp_style(sk, UDP)) 6082 sctp_style(sk, UDP))
6089 return -EINVAL; 6083 return -EINVAL;
6090 6084
6091 if (asoc) { 6085 if (asoc) {
6092 /* Fetch association values. 6086 /* Fetch association values. */
6093 if (asoc->param_flags & SPP_S 6087 if (asoc->param_flags & SPP_SACKDELAY_ENABLE) {
6094 params.sack_delay = j 6088 params.sack_delay = jiffies_to_msecs(asoc->sackdelay);
6095 params.sack_freq = as 6089 params.sack_freq = asoc->sackfreq;
6096 6090
6097 } else { 6091 } else {
6098 params.sack_delay = 0 6092 params.sack_delay = 0;
6099 params.sack_freq = 1; 6093 params.sack_freq = 1;
6100 } 6094 }
6101 } else { 6095 } else {
6102 /* Fetch socket values. */ 6096 /* Fetch socket values. */
6103 if (sp->param_flags & SPP_SAC 6097 if (sp->param_flags & SPP_SACKDELAY_ENABLE) {
6104 params.sack_delay = 6098 params.sack_delay = sp->sackdelay;
6105 params.sack_freq = sp 6099 params.sack_freq = sp->sackfreq;
6106 } else { 6100 } else {
6107 params.sack_delay = 6101 params.sack_delay = 0;
6108 params.sack_freq = 1; 6102 params.sack_freq = 1;
6109 } 6103 }
6110 } 6104 }
6111 6105
6112 if (copy_to_user(optval, ¶ms, len 6106 if (copy_to_user(optval, ¶ms, len))
6113 return -EFAULT; 6107 return -EFAULT;
6114 6108
6115 if (put_user(len, optlen)) 6109 if (put_user(len, optlen))
6116 return -EFAULT; 6110 return -EFAULT;
6117 6111
6118 return 0; 6112 return 0;
6119 } 6113 }
6120 6114
6121 /* 7.1.3 Initialization Parameters (SCTP_INIT 6115 /* 7.1.3 Initialization Parameters (SCTP_INITMSG)
6122 * 6116 *
6123 * Applications can specify protocol paramete 6117 * Applications can specify protocol parameters for the default association
6124 * initialization. The option name argument 6118 * initialization. The option name argument to setsockopt() and getsockopt()
6125 * is SCTP_INITMSG. 6119 * is SCTP_INITMSG.
6126 * 6120 *
6127 * Setting initialization parameters is effec 6121 * Setting initialization parameters is effective only on an unconnected
6128 * socket (for UDP-style sockets only future 6122 * socket (for UDP-style sockets only future associations are effected
6129 * by the change). With TCP-style sockets, t 6123 * by the change). With TCP-style sockets, this option is inherited by
6130 * sockets derived from a listener socket. 6124 * sockets derived from a listener socket.
6131 */ 6125 */
6132 static int sctp_getsockopt_initmsg(struct soc 6126 static int sctp_getsockopt_initmsg(struct sock *sk, int len, char __user *optval, int __user *optlen)
6133 { 6127 {
6134 if (len < sizeof(struct sctp_initmsg) 6128 if (len < sizeof(struct sctp_initmsg))
6135 return -EINVAL; 6129 return -EINVAL;
6136 len = sizeof(struct sctp_initmsg); 6130 len = sizeof(struct sctp_initmsg);
6137 if (put_user(len, optlen)) 6131 if (put_user(len, optlen))
6138 return -EFAULT; 6132 return -EFAULT;
6139 if (copy_to_user(optval, &sctp_sk(sk) 6133 if (copy_to_user(optval, &sctp_sk(sk)->initmsg, len))
6140 return -EFAULT; 6134 return -EFAULT;
6141 return 0; 6135 return 0;
6142 } 6136 }
6143 6137
6144 6138
6145 static int sctp_getsockopt_peer_addrs(struct 6139 static int sctp_getsockopt_peer_addrs(struct sock *sk, int len,
6146 char __ 6140 char __user *optval, int __user *optlen)
6147 { 6141 {
6148 struct sctp_association *asoc; 6142 struct sctp_association *asoc;
6149 int cnt = 0; 6143 int cnt = 0;
6150 struct sctp_getaddrs getaddrs; 6144 struct sctp_getaddrs getaddrs;
6151 struct sctp_transport *from; 6145 struct sctp_transport *from;
6152 void __user *to; 6146 void __user *to;
6153 union sctp_addr temp; 6147 union sctp_addr temp;
6154 struct sctp_sock *sp = sctp_sk(sk); 6148 struct sctp_sock *sp = sctp_sk(sk);
6155 int addrlen; 6149 int addrlen;
6156 size_t space_left; 6150 size_t space_left;
6157 int bytes_copied; 6151 int bytes_copied;
6158 6152
6159 if (len < sizeof(struct sctp_getaddrs 6153 if (len < sizeof(struct sctp_getaddrs))
6160 return -EINVAL; 6154 return -EINVAL;
6161 6155
6162 if (copy_from_user(&getaddrs, optval, 6156 if (copy_from_user(&getaddrs, optval, sizeof(struct sctp_getaddrs)))
6163 return -EFAULT; 6157 return -EFAULT;
6164 6158
6165 /* For UDP-style sockets, id specifie 6159 /* For UDP-style sockets, id specifies the association to query. */
6166 asoc = sctp_id2assoc(sk, getaddrs.ass 6160 asoc = sctp_id2assoc(sk, getaddrs.assoc_id);
6167 if (!asoc) 6161 if (!asoc)
6168 return -EINVAL; 6162 return -EINVAL;
6169 6163
6170 to = optval + offsetof(struct sctp_ge 6164 to = optval + offsetof(struct sctp_getaddrs, addrs);
6171 space_left = len - offsetof(struct sc 6165 space_left = len - offsetof(struct sctp_getaddrs, addrs);
6172 6166
6173 list_for_each_entry(from, &asoc->peer 6167 list_for_each_entry(from, &asoc->peer.transport_addr_list,
6174 transports) { 6168 transports) {
6175 memcpy(&temp, &from->ipaddr, 6169 memcpy(&temp, &from->ipaddr, sizeof(temp));
6176 addrlen = sctp_get_pf_specifi 6170 addrlen = sctp_get_pf_specific(sk->sk_family)
6177 ->addr_to_user( 6171 ->addr_to_user(sp, &temp);
6178 if (space_left < addrlen) 6172 if (space_left < addrlen)
6179 return -ENOMEM; 6173 return -ENOMEM;
6180 if (copy_to_user(to, &temp, a 6174 if (copy_to_user(to, &temp, addrlen))
6181 return -EFAULT; 6175 return -EFAULT;
6182 to += addrlen; 6176 to += addrlen;
6183 cnt++; 6177 cnt++;
6184 space_left -= addrlen; 6178 space_left -= addrlen;
6185 } 6179 }
6186 6180
6187 if (put_user(cnt, &((struct sctp_geta 6181 if (put_user(cnt, &((struct sctp_getaddrs __user *)optval)->addr_num))
6188 return -EFAULT; 6182 return -EFAULT;
6189 bytes_copied = ((char __user *)to) - 6183 bytes_copied = ((char __user *)to) - optval;
6190 if (put_user(bytes_copied, optlen)) 6184 if (put_user(bytes_copied, optlen))
6191 return -EFAULT; 6185 return -EFAULT;
6192 6186
6193 return 0; 6187 return 0;
6194 } 6188 }
6195 6189
6196 static int sctp_copy_laddrs(struct sock *sk, 6190 static int sctp_copy_laddrs(struct sock *sk, __u16 port, void *to,
6197 size_t space_left 6191 size_t space_left, int *bytes_copied)
6198 { 6192 {
6199 struct sctp_sockaddr_entry *addr; 6193 struct sctp_sockaddr_entry *addr;
6200 union sctp_addr temp; 6194 union sctp_addr temp;
6201 int cnt = 0; 6195 int cnt = 0;
6202 int addrlen; 6196 int addrlen;
6203 struct net *net = sock_net(sk); 6197 struct net *net = sock_net(sk);
6204 6198
6205 rcu_read_lock(); 6199 rcu_read_lock();
6206 list_for_each_entry_rcu(addr, &net->s 6200 list_for_each_entry_rcu(addr, &net->sctp.local_addr_list, list) {
6207 if (!addr->valid) 6201 if (!addr->valid)
6208 continue; 6202 continue;
6209 6203
6210 if ((PF_INET == sk->sk_family 6204 if ((PF_INET == sk->sk_family) &&
6211 (AF_INET6 == addr->a.sa.s 6205 (AF_INET6 == addr->a.sa.sa_family))
6212 continue; 6206 continue;
6213 if ((PF_INET6 == sk->sk_famil 6207 if ((PF_INET6 == sk->sk_family) &&
6214 inet_v6_ipv6only(sk) && 6208 inet_v6_ipv6only(sk) &&
6215 (AF_INET == addr->a.sa.sa 6209 (AF_INET == addr->a.sa.sa_family))
6216 continue; 6210 continue;
6217 memcpy(&temp, &addr->a, sizeo 6211 memcpy(&temp, &addr->a, sizeof(temp));
6218 if (!temp.v4.sin_port) 6212 if (!temp.v4.sin_port)
6219 temp.v4.sin_port = ht 6213 temp.v4.sin_port = htons(port);
6220 6214
6221 addrlen = sctp_get_pf_specifi 6215 addrlen = sctp_get_pf_specific(sk->sk_family)
6222 ->addr_to_user( 6216 ->addr_to_user(sctp_sk(sk), &temp);
6223 6217
6224 if (space_left < addrlen) { 6218 if (space_left < addrlen) {
6225 cnt = -ENOMEM; 6219 cnt = -ENOMEM;
6226 break; 6220 break;
6227 } 6221 }
6228 memcpy(to, &temp, addrlen); 6222 memcpy(to, &temp, addrlen);
6229 6223
6230 to += addrlen; 6224 to += addrlen;
6231 cnt++; 6225 cnt++;
6232 space_left -= addrlen; 6226 space_left -= addrlen;
6233 *bytes_copied += addrlen; 6227 *bytes_copied += addrlen;
6234 } 6228 }
6235 rcu_read_unlock(); 6229 rcu_read_unlock();
6236 6230
6237 return cnt; 6231 return cnt;
6238 } 6232 }
6239 6233
6240 6234
6241 static int sctp_getsockopt_local_addrs(struct 6235 static int sctp_getsockopt_local_addrs(struct sock *sk, int len,
6242 char _ 6236 char __user *optval, int __user *optlen)
6243 { 6237 {
6244 struct sctp_bind_addr *bp; 6238 struct sctp_bind_addr *bp;
6245 struct sctp_association *asoc; 6239 struct sctp_association *asoc;
6246 int cnt = 0; 6240 int cnt = 0;
6247 struct sctp_getaddrs getaddrs; 6241 struct sctp_getaddrs getaddrs;
6248 struct sctp_sockaddr_entry *addr; 6242 struct sctp_sockaddr_entry *addr;
6249 void __user *to; 6243 void __user *to;
6250 union sctp_addr temp; 6244 union sctp_addr temp;
6251 struct sctp_sock *sp = sctp_sk(sk); 6245 struct sctp_sock *sp = sctp_sk(sk);
6252 int addrlen; 6246 int addrlen;
6253 int err = 0; 6247 int err = 0;
6254 size_t space_left; 6248 size_t space_left;
6255 int bytes_copied = 0; 6249 int bytes_copied = 0;
6256 void *addrs; 6250 void *addrs;
6257 void *buf; 6251 void *buf;
6258 6252
6259 if (len < sizeof(struct sctp_getaddrs 6253 if (len < sizeof(struct sctp_getaddrs))
6260 return -EINVAL; 6254 return -EINVAL;
6261 6255
6262 if (copy_from_user(&getaddrs, optval, 6256 if (copy_from_user(&getaddrs, optval, sizeof(struct sctp_getaddrs)))
6263 return -EFAULT; 6257 return -EFAULT;
6264 6258
6265 /* 6259 /*
6266 * For UDP-style sockets, id specifi 6260 * For UDP-style sockets, id specifies the association to query.
6267 * If the id field is set to the val 6261 * If the id field is set to the value '' then the locally bound
6268 * addresses are returned without re 6262 * addresses are returned without regard to any particular
6269 * association. 6263 * association.
6270 */ 6264 */
6271 if (0 == getaddrs.assoc_id) { 6265 if (0 == getaddrs.assoc_id) {
6272 bp = &sctp_sk(sk)->ep->base.b 6266 bp = &sctp_sk(sk)->ep->base.bind_addr;
6273 } else { 6267 } else {
6274 asoc = sctp_id2assoc(sk, geta 6268 asoc = sctp_id2assoc(sk, getaddrs.assoc_id);
6275 if (!asoc) 6269 if (!asoc)
6276 return -EINVAL; 6270 return -EINVAL;
6277 bp = &asoc->base.bind_addr; 6271 bp = &asoc->base.bind_addr;
6278 } 6272 }
6279 6273
6280 to = optval + offsetof(struct sctp_ge 6274 to = optval + offsetof(struct sctp_getaddrs, addrs);
6281 space_left = len - offsetof(struct sc 6275 space_left = len - offsetof(struct sctp_getaddrs, addrs);
6282 6276
6283 addrs = kmalloc(space_left, GFP_USER 6277 addrs = kmalloc(space_left, GFP_USER | __GFP_NOWARN);
6284 if (!addrs) 6278 if (!addrs)
6285 return -ENOMEM; 6279 return -ENOMEM;
6286 6280
6287 /* If the endpoint is bound to 0.0.0. 6281 /* If the endpoint is bound to 0.0.0.0 or ::0, get the valid
6288 * addresses from the global local ad 6282 * addresses from the global local address list.
6289 */ 6283 */
6290 if (sctp_list_single_entry(&bp->addre 6284 if (sctp_list_single_entry(&bp->address_list)) {
6291 addr = list_entry(bp->address 6285 addr = list_entry(bp->address_list.next,
6292 struct sctp 6286 struct sctp_sockaddr_entry, list);
6293 if (sctp_is_any(sk, &addr->a) 6287 if (sctp_is_any(sk, &addr->a)) {
6294 cnt = sctp_copy_laddr 6288 cnt = sctp_copy_laddrs(sk, bp->port, addrs,
6295 6289 space_left, &bytes_copied);
6296 if (cnt < 0) { 6290 if (cnt < 0) {
6297 err = cnt; 6291 err = cnt;
6298 goto out; 6292 goto out;
6299 } 6293 }
6300 goto copy_getaddrs; 6294 goto copy_getaddrs;
6301 } 6295 }
6302 } 6296 }
6303 6297
6304 buf = addrs; 6298 buf = addrs;
6305 /* Protection on the bound address li 6299 /* Protection on the bound address list is not needed since
6306 * in the socket option context we ho 6300 * in the socket option context we hold a socket lock and
6307 * thus the bound address list can't 6301 * thus the bound address list can't change.
6308 */ 6302 */
6309 list_for_each_entry(addr, &bp->addres 6303 list_for_each_entry(addr, &bp->address_list, list) {
6310 memcpy(&temp, &addr->a, sizeo 6304 memcpy(&temp, &addr->a, sizeof(temp));
6311 addrlen = sctp_get_pf_specifi 6305 addrlen = sctp_get_pf_specific(sk->sk_family)
6312 ->addr_to_user( 6306 ->addr_to_user(sp, &temp);
6313 if (space_left < addrlen) { 6307 if (space_left < addrlen) {
6314 err = -ENOMEM; /*fix 6308 err = -ENOMEM; /*fixme: right error?*/
6315 goto out; 6309 goto out;
6316 } 6310 }
6317 memcpy(buf, &temp, addrlen); 6311 memcpy(buf, &temp, addrlen);
6318 buf += addrlen; 6312 buf += addrlen;
6319 bytes_copied += addrlen; 6313 bytes_copied += addrlen;
6320 cnt++; 6314 cnt++;
6321 space_left -= addrlen; 6315 space_left -= addrlen;
6322 } 6316 }
6323 6317
6324 copy_getaddrs: 6318 copy_getaddrs:
6325 if (copy_to_user(to, addrs, bytes_cop 6319 if (copy_to_user(to, addrs, bytes_copied)) {
6326 err = -EFAULT; 6320 err = -EFAULT;
6327 goto out; 6321 goto out;
6328 } 6322 }
6329 if (put_user(cnt, &((struct sctp_geta 6323 if (put_user(cnt, &((struct sctp_getaddrs __user *)optval)->addr_num)) {
6330 err = -EFAULT; 6324 err = -EFAULT;
6331 goto out; 6325 goto out;
6332 } 6326 }
6333 /* XXX: We should have accounted for 6327 /* XXX: We should have accounted for sizeof(struct sctp_getaddrs) too,
6334 * but we can't change it anymore. 6328 * but we can't change it anymore.
6335 */ 6329 */
6336 if (put_user(bytes_copied, optlen)) 6330 if (put_user(bytes_copied, optlen))
6337 err = -EFAULT; 6331 err = -EFAULT;
6338 out: 6332 out:
6339 kfree(addrs); 6333 kfree(addrs);
6340 return err; 6334 return err;
6341 } 6335 }
6342 6336
6343 /* 7.1.10 Set Primary Address (SCTP_PRIMARY_A 6337 /* 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR)
6344 * 6338 *
6345 * Requests that the local SCTP stack use the 6339 * Requests that the local SCTP stack use the enclosed peer address as
6346 * the association primary. The enclosed add 6340 * the association primary. The enclosed address must be one of the
6347 * association peer's addresses. 6341 * association peer's addresses.
6348 */ 6342 */
6349 static int sctp_getsockopt_primary_addr(struc 6343 static int sctp_getsockopt_primary_addr(struct sock *sk, int len,
6350 char 6344 char __user *optval, int __user *optlen)
6351 { 6345 {
6352 struct sctp_prim prim; 6346 struct sctp_prim prim;
6353 struct sctp_association *asoc; 6347 struct sctp_association *asoc;
6354 struct sctp_sock *sp = sctp_sk(sk); 6348 struct sctp_sock *sp = sctp_sk(sk);
6355 6349
6356 if (len < sizeof(struct sctp_prim)) 6350 if (len < sizeof(struct sctp_prim))
6357 return -EINVAL; 6351 return -EINVAL;
6358 6352
6359 len = sizeof(struct sctp_prim); 6353 len = sizeof(struct sctp_prim);
6360 6354
6361 if (copy_from_user(&prim, optval, len 6355 if (copy_from_user(&prim, optval, len))
6362 return -EFAULT; 6356 return -EFAULT;
6363 6357
6364 asoc = sctp_id2assoc(sk, prim.ssp_ass 6358 asoc = sctp_id2assoc(sk, prim.ssp_assoc_id);
6365 if (!asoc) 6359 if (!asoc)
6366 return -EINVAL; 6360 return -EINVAL;
6367 6361
6368 if (!asoc->peer.primary_path) 6362 if (!asoc->peer.primary_path)
6369 return -ENOTCONN; 6363 return -ENOTCONN;
6370 6364
6371 memcpy(&prim.ssp_addr, &asoc->peer.pr 6365 memcpy(&prim.ssp_addr, &asoc->peer.primary_path->ipaddr,
6372 asoc->peer.primary_path->af_s 6366 asoc->peer.primary_path->af_specific->sockaddr_len);
6373 6367
6374 sctp_get_pf_specific(sk->sk_family)-> 6368 sctp_get_pf_specific(sk->sk_family)->addr_to_user(sp,
6375 (union sctp_addr *)&p 6369 (union sctp_addr *)&prim.ssp_addr);
6376 6370
6377 if (put_user(len, optlen)) 6371 if (put_user(len, optlen))
6378 return -EFAULT; 6372 return -EFAULT;
6379 if (copy_to_user(optval, &prim, len)) 6373 if (copy_to_user(optval, &prim, len))
6380 return -EFAULT; 6374 return -EFAULT;
6381 6375
6382 return 0; 6376 return 0;
6383 } 6377 }
6384 6378
6385 /* 6379 /*
6386 * 7.1.11 Set Adaptation Layer Indicator (SC 6380 * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER)
6387 * 6381 *
6388 * Requests that the local endpoint set the s 6382 * Requests that the local endpoint set the specified Adaptation Layer
6389 * Indication parameter for all future INIT a 6383 * Indication parameter for all future INIT and INIT-ACK exchanges.
6390 */ 6384 */
6391 static int sctp_getsockopt_adaptation_layer(s 6385 static int sctp_getsockopt_adaptation_layer(struct sock *sk, int len,
6392 char __user 6386 char __user *optval, int __user *optlen)
6393 { 6387 {
6394 struct sctp_setadaptation adaptation; 6388 struct sctp_setadaptation adaptation;
6395 6389
6396 if (len < sizeof(struct sctp_setadapt 6390 if (len < sizeof(struct sctp_setadaptation))
6397 return -EINVAL; 6391 return -EINVAL;
6398 6392
6399 len = sizeof(struct sctp_setadaptatio 6393 len = sizeof(struct sctp_setadaptation);
6400 6394
6401 adaptation.ssb_adaptation_ind = sctp_ 6395 adaptation.ssb_adaptation_ind = sctp_sk(sk)->adaptation_ind;
6402 6396
6403 if (put_user(len, optlen)) 6397 if (put_user(len, optlen))
6404 return -EFAULT; 6398 return -EFAULT;
6405 if (copy_to_user(optval, &adaptation, 6399 if (copy_to_user(optval, &adaptation, len))
6406 return -EFAULT; 6400 return -EFAULT;
6407 6401
6408 return 0; 6402 return 0;
6409 } 6403 }
6410 6404
6411 /* 6405 /*
6412 * 6406 *
6413 * 7.1.14 Set default send parameters (SCTP_D 6407 * 7.1.14 Set default send parameters (SCTP_DEFAULT_SEND_PARAM)
6414 * 6408 *
6415 * Applications that wish to use the sendto 6409 * Applications that wish to use the sendto() system call may wish to
6416 * specify a default set of parameters that 6410 * specify a default set of parameters that would normally be supplied
6417 * through the inclusion of ancillary data. 6411 * through the inclusion of ancillary data. This socket option allows
6418 * such an application to set the default s 6412 * such an application to set the default sctp_sndrcvinfo structure.
6419 6413
6420 6414
6421 * The application that wishes to use this 6415 * The application that wishes to use this socket option simply passes
6422 * in to this call the sctp_sndrcvinfo stru 6416 * in to this call the sctp_sndrcvinfo structure defined in Section
6423 * 5.2.2) The input parameters accepted by 6417 * 5.2.2) The input parameters accepted by this call include
6424 * sinfo_stream, sinfo_flags, sinfo_ppid, s 6418 * sinfo_stream, sinfo_flags, sinfo_ppid, sinfo_context,
6425 * sinfo_timetolive. The user must provide 6419 * sinfo_timetolive. The user must provide the sinfo_assoc_id field in
6426 * to this call if the caller is using the 6420 * to this call if the caller is using the UDP model.
6427 * 6421 *
6428 * For getsockopt, it get the default sctp_ 6422 * For getsockopt, it get the default sctp_sndrcvinfo structure.
6429 */ 6423 */
6430 static int sctp_getsockopt_default_send_param 6424 static int sctp_getsockopt_default_send_param(struct sock *sk,
6431 int l 6425 int len, char __user *optval,
6432 int _ 6426 int __user *optlen)
6433 { 6427 {
6434 struct sctp_sock *sp = sctp_sk(sk); 6428 struct sctp_sock *sp = sctp_sk(sk);
6435 struct sctp_association *asoc; 6429 struct sctp_association *asoc;
6436 struct sctp_sndrcvinfo info; 6430 struct sctp_sndrcvinfo info;
6437 6431
6438 if (len < sizeof(info)) 6432 if (len < sizeof(info))
6439 return -EINVAL; 6433 return -EINVAL;
6440 6434
6441 len = sizeof(info); 6435 len = sizeof(info);
6442 6436
6443 if (copy_from_user(&info, optval, len 6437 if (copy_from_user(&info, optval, len))
6444 return -EFAULT; 6438 return -EFAULT;
6445 6439
6446 asoc = sctp_id2assoc(sk, info.sinfo_a 6440 asoc = sctp_id2assoc(sk, info.sinfo_assoc_id);
6447 if (!asoc && info.sinfo_assoc_id != S 6441 if (!asoc && info.sinfo_assoc_id != SCTP_FUTURE_ASSOC &&
6448 sctp_style(sk, UDP)) 6442 sctp_style(sk, UDP))
6449 return -EINVAL; 6443 return -EINVAL;
6450 6444
6451 if (asoc) { 6445 if (asoc) {
6452 info.sinfo_stream = asoc->def 6446 info.sinfo_stream = asoc->default_stream;
6453 info.sinfo_flags = asoc->defa 6447 info.sinfo_flags = asoc->default_flags;
6454 info.sinfo_ppid = asoc->defau 6448 info.sinfo_ppid = asoc->default_ppid;
6455 info.sinfo_context = asoc->de 6449 info.sinfo_context = asoc->default_context;
6456 info.sinfo_timetolive = asoc- 6450 info.sinfo_timetolive = asoc->default_timetolive;
6457 } else { 6451 } else {
6458 info.sinfo_stream = sp->defau 6452 info.sinfo_stream = sp->default_stream;
6459 info.sinfo_flags = sp->defaul 6453 info.sinfo_flags = sp->default_flags;
6460 info.sinfo_ppid = sp->default 6454 info.sinfo_ppid = sp->default_ppid;
6461 info.sinfo_context = sp->defa 6455 info.sinfo_context = sp->default_context;
6462 info.sinfo_timetolive = sp->d 6456 info.sinfo_timetolive = sp->default_timetolive;
6463 } 6457 }
6464 6458
6465 if (put_user(len, optlen)) 6459 if (put_user(len, optlen))
6466 return -EFAULT; 6460 return -EFAULT;
6467 if (copy_to_user(optval, &info, len)) 6461 if (copy_to_user(optval, &info, len))
6468 return -EFAULT; 6462 return -EFAULT;
6469 6463
6470 return 0; 6464 return 0;
6471 } 6465 }
6472 6466
6473 /* RFC6458, Section 8.1.31. Set/get Default S 6467 /* RFC6458, Section 8.1.31. Set/get Default Send Parameters
6474 * (SCTP_DEFAULT_SNDINFO) 6468 * (SCTP_DEFAULT_SNDINFO)
6475 */ 6469 */
6476 static int sctp_getsockopt_default_sndinfo(st 6470 static int sctp_getsockopt_default_sndinfo(struct sock *sk, int len,
6477 ch 6471 char __user *optval,
6478 in 6472 int __user *optlen)
6479 { 6473 {
6480 struct sctp_sock *sp = sctp_sk(sk); 6474 struct sctp_sock *sp = sctp_sk(sk);
6481 struct sctp_association *asoc; 6475 struct sctp_association *asoc;
6482 struct sctp_sndinfo info; 6476 struct sctp_sndinfo info;
6483 6477
6484 if (len < sizeof(info)) 6478 if (len < sizeof(info))
6485 return -EINVAL; 6479 return -EINVAL;
6486 6480
6487 len = sizeof(info); 6481 len = sizeof(info);
6488 6482
6489 if (copy_from_user(&info, optval, len 6483 if (copy_from_user(&info, optval, len))
6490 return -EFAULT; 6484 return -EFAULT;
6491 6485
6492 asoc = sctp_id2assoc(sk, info.snd_ass 6486 asoc = sctp_id2assoc(sk, info.snd_assoc_id);
6493 if (!asoc && info.snd_assoc_id != SCT 6487 if (!asoc && info.snd_assoc_id != SCTP_FUTURE_ASSOC &&
6494 sctp_style(sk, UDP)) 6488 sctp_style(sk, UDP))
6495 return -EINVAL; 6489 return -EINVAL;
6496 6490
6497 if (asoc) { 6491 if (asoc) {
6498 info.snd_sid = asoc->default_ 6492 info.snd_sid = asoc->default_stream;
6499 info.snd_flags = asoc->defaul 6493 info.snd_flags = asoc->default_flags;
6500 info.snd_ppid = asoc->default 6494 info.snd_ppid = asoc->default_ppid;
6501 info.snd_context = asoc->defa 6495 info.snd_context = asoc->default_context;
6502 } else { 6496 } else {
6503 info.snd_sid = sp->default_st 6497 info.snd_sid = sp->default_stream;
6504 info.snd_flags = sp->default_ 6498 info.snd_flags = sp->default_flags;
6505 info.snd_ppid = sp->default_p 6499 info.snd_ppid = sp->default_ppid;
6506 info.snd_context = sp->defaul 6500 info.snd_context = sp->default_context;
6507 } 6501 }
6508 6502
6509 if (put_user(len, optlen)) 6503 if (put_user(len, optlen))
6510 return -EFAULT; 6504 return -EFAULT;
6511 if (copy_to_user(optval, &info, len)) 6505 if (copy_to_user(optval, &info, len))
6512 return -EFAULT; 6506 return -EFAULT;
6513 6507
6514 return 0; 6508 return 0;
6515 } 6509 }
6516 6510
6517 /* 6511 /*
6518 * 6512 *
6519 * 7.1.5 SCTP_NODELAY 6513 * 7.1.5 SCTP_NODELAY
6520 * 6514 *
6521 * Turn on/off any Nagle-like algorithm. Thi 6515 * Turn on/off any Nagle-like algorithm. This means that packets are
6522 * generally sent as soon as possible and no 6516 * generally sent as soon as possible and no unnecessary delays are
6523 * introduced, at the cost of more packets in 6517 * introduced, at the cost of more packets in the network. Expects an
6524 * integer boolean flag. 6518 * integer boolean flag.
6525 */ 6519 */
6526 6520
6527 static int sctp_getsockopt_nodelay(struct soc 6521 static int sctp_getsockopt_nodelay(struct sock *sk, int len,
6528 char __use 6522 char __user *optval, int __user *optlen)
6529 { 6523 {
6530 int val; 6524 int val;
6531 6525
6532 if (len < sizeof(int)) 6526 if (len < sizeof(int))
6533 return -EINVAL; 6527 return -EINVAL;
6534 6528
6535 len = sizeof(int); 6529 len = sizeof(int);
6536 val = (sctp_sk(sk)->nodelay == 1); 6530 val = (sctp_sk(sk)->nodelay == 1);
6537 if (put_user(len, optlen)) 6531 if (put_user(len, optlen))
6538 return -EFAULT; 6532 return -EFAULT;
6539 if (copy_to_user(optval, &val, len)) 6533 if (copy_to_user(optval, &val, len))
6540 return -EFAULT; 6534 return -EFAULT;
6541 return 0; 6535 return 0;
6542 } 6536 }
6543 6537
6544 /* 6538 /*
6545 * 6539 *
6546 * 7.1.1 SCTP_RTOINFO 6540 * 7.1.1 SCTP_RTOINFO
6547 * 6541 *
6548 * The protocol parameters used to initialize 6542 * The protocol parameters used to initialize and bound retransmission
6549 * timeout (RTO) are tunable. sctp_rtoinfo st 6543 * timeout (RTO) are tunable. sctp_rtoinfo structure is used to access
6550 * and modify these parameters. 6544 * and modify these parameters.
6551 * All parameters are time values, in millise 6545 * All parameters are time values, in milliseconds. A value of 0, when
6552 * modifying the parameters, indicates that t 6546 * modifying the parameters, indicates that the current value should not
6553 * be changed. 6547 * be changed.
6554 * 6548 *
6555 */ 6549 */
6556 static int sctp_getsockopt_rtoinfo(struct soc 6550 static int sctp_getsockopt_rtoinfo(struct sock *sk, int len,
6557 char __user * 6551 char __user *optval,
6558 int __user *o 6552 int __user *optlen) {
6559 struct sctp_rtoinfo rtoinfo; 6553 struct sctp_rtoinfo rtoinfo;
6560 struct sctp_association *asoc; 6554 struct sctp_association *asoc;
6561 6555
6562 if (len < sizeof (struct sctp_rtoinfo 6556 if (len < sizeof (struct sctp_rtoinfo))
6563 return -EINVAL; 6557 return -EINVAL;
6564 6558
6565 len = sizeof(struct sctp_rtoinfo); 6559 len = sizeof(struct sctp_rtoinfo);
6566 6560
6567 if (copy_from_user(&rtoinfo, optval, 6561 if (copy_from_user(&rtoinfo, optval, len))
6568 return -EFAULT; 6562 return -EFAULT;
6569 6563
6570 asoc = sctp_id2assoc(sk, rtoinfo.srto 6564 asoc = sctp_id2assoc(sk, rtoinfo.srto_assoc_id);
6571 6565
6572 if (!asoc && rtoinfo.srto_assoc_id != 6566 if (!asoc && rtoinfo.srto_assoc_id != SCTP_FUTURE_ASSOC &&
6573 sctp_style(sk, UDP)) 6567 sctp_style(sk, UDP))
6574 return -EINVAL; 6568 return -EINVAL;
6575 6569
6576 /* Values corresponding to the specif 6570 /* Values corresponding to the specific association. */
6577 if (asoc) { 6571 if (asoc) {
6578 rtoinfo.srto_initial = jiffie 6572 rtoinfo.srto_initial = jiffies_to_msecs(asoc->rto_initial);
6579 rtoinfo.srto_max = jiffies_to 6573 rtoinfo.srto_max = jiffies_to_msecs(asoc->rto_max);
6580 rtoinfo.srto_min = jiffies_to 6574 rtoinfo.srto_min = jiffies_to_msecs(asoc->rto_min);
6581 } else { 6575 } else {
6582 /* Values corresponding to th 6576 /* Values corresponding to the endpoint. */
6583 struct sctp_sock *sp = sctp_s 6577 struct sctp_sock *sp = sctp_sk(sk);
6584 6578
6585 rtoinfo.srto_initial = sp->rt 6579 rtoinfo.srto_initial = sp->rtoinfo.srto_initial;
6586 rtoinfo.srto_max = sp->rtoinf 6580 rtoinfo.srto_max = sp->rtoinfo.srto_max;
6587 rtoinfo.srto_min = sp->rtoinf 6581 rtoinfo.srto_min = sp->rtoinfo.srto_min;
6588 } 6582 }
6589 6583
6590 if (put_user(len, optlen)) 6584 if (put_user(len, optlen))
6591 return -EFAULT; 6585 return -EFAULT;
6592 6586
6593 if (copy_to_user(optval, &rtoinfo, le 6587 if (copy_to_user(optval, &rtoinfo, len))
6594 return -EFAULT; 6588 return -EFAULT;
6595 6589
6596 return 0; 6590 return 0;
6597 } 6591 }
6598 6592
6599 /* 6593 /*
6600 * 6594 *
6601 * 7.1.2 SCTP_ASSOCINFO 6595 * 7.1.2 SCTP_ASSOCINFO
6602 * 6596 *
6603 * This option is used to tune the maximum re 6597 * This option is used to tune the maximum retransmission attempts
6604 * of the association. 6598 * of the association.
6605 * Returns an error if the new association re 6599 * Returns an error if the new association retransmission value is
6606 * greater than the sum of the retransmission 6600 * greater than the sum of the retransmission value of the peer.
6607 * See [SCTP] for more information. 6601 * See [SCTP] for more information.
6608 * 6602 *
6609 */ 6603 */
6610 static int sctp_getsockopt_associnfo(struct s 6604 static int sctp_getsockopt_associnfo(struct sock *sk, int len,
6611 char __u 6605 char __user *optval,
6612 int __us 6606 int __user *optlen)
6613 { 6607 {
6614 6608
6615 struct sctp_assocparams assocparams; 6609 struct sctp_assocparams assocparams;
6616 struct sctp_association *asoc; 6610 struct sctp_association *asoc;
6617 struct list_head *pos; 6611 struct list_head *pos;
6618 int cnt = 0; 6612 int cnt = 0;
6619 6613
6620 if (len < sizeof (struct sctp_assocpa 6614 if (len < sizeof (struct sctp_assocparams))
6621 return -EINVAL; 6615 return -EINVAL;
6622 6616
6623 len = sizeof(struct sctp_assocparams) 6617 len = sizeof(struct sctp_assocparams);
6624 6618
6625 if (copy_from_user(&assocparams, optv 6619 if (copy_from_user(&assocparams, optval, len))
6626 return -EFAULT; 6620 return -EFAULT;
6627 6621
6628 asoc = sctp_id2assoc(sk, assocparams. 6622 asoc = sctp_id2assoc(sk, assocparams.sasoc_assoc_id);
6629 6623
6630 if (!asoc && assocparams.sasoc_assoc_ 6624 if (!asoc && assocparams.sasoc_assoc_id != SCTP_FUTURE_ASSOC &&
6631 sctp_style(sk, UDP)) 6625 sctp_style(sk, UDP))
6632 return -EINVAL; 6626 return -EINVAL;
6633 6627
6634 /* Values correspoinding to the speci 6628 /* Values correspoinding to the specific association */
6635 if (asoc) { 6629 if (asoc) {
6636 assocparams.sasoc_asocmaxrxt 6630 assocparams.sasoc_asocmaxrxt = asoc->max_retrans;
6637 assocparams.sasoc_peer_rwnd = 6631 assocparams.sasoc_peer_rwnd = asoc->peer.rwnd;
6638 assocparams.sasoc_local_rwnd 6632 assocparams.sasoc_local_rwnd = asoc->a_rwnd;
6639 assocparams.sasoc_cookie_life 6633 assocparams.sasoc_cookie_life = ktime_to_ms(asoc->cookie_life);
6640 6634
6641 list_for_each(pos, &asoc->pee 6635 list_for_each(pos, &asoc->peer.transport_addr_list) {
6642 cnt++; 6636 cnt++;
6643 } 6637 }
6644 6638
6645 assocparams.sasoc_number_peer 6639 assocparams.sasoc_number_peer_destinations = cnt;
6646 } else { 6640 } else {
6647 /* Values corresponding to th 6641 /* Values corresponding to the endpoint */
6648 struct sctp_sock *sp = sctp_s 6642 struct sctp_sock *sp = sctp_sk(sk);
6649 6643
6650 assocparams.sasoc_asocmaxrxt 6644 assocparams.sasoc_asocmaxrxt = sp->assocparams.sasoc_asocmaxrxt;
6651 assocparams.sasoc_peer_rwnd = 6645 assocparams.sasoc_peer_rwnd = sp->assocparams.sasoc_peer_rwnd;
6652 assocparams.sasoc_local_rwnd 6646 assocparams.sasoc_local_rwnd = sp->assocparams.sasoc_local_rwnd;
6653 assocparams.sasoc_cookie_life 6647 assocparams.sasoc_cookie_life =
6654 sp->a 6648 sp->assocparams.sasoc_cookie_life;
6655 assocparams.sasoc_number_peer 6649 assocparams.sasoc_number_peer_destinations =
6656 sp->a 6650 sp->assocparams.
6657 sasoc 6651 sasoc_number_peer_destinations;
6658 } 6652 }
6659 6653
6660 if (put_user(len, optlen)) 6654 if (put_user(len, optlen))
6661 return -EFAULT; 6655 return -EFAULT;
6662 6656
6663 if (copy_to_user(optval, &assocparams 6657 if (copy_to_user(optval, &assocparams, len))
6664 return -EFAULT; 6658 return -EFAULT;
6665 6659
6666 return 0; 6660 return 0;
6667 } 6661 }
6668 6662
6669 /* 6663 /*
6670 * 7.1.16 Set/clear IPv4 mapped addresses (SC 6664 * 7.1.16 Set/clear IPv4 mapped addresses (SCTP_I_WANT_MAPPED_V4_ADDR)
6671 * 6665 *
6672 * This socket option is a boolean flag which 6666 * This socket option is a boolean flag which turns on or off mapped V4
6673 * addresses. If this option is turned on an 6667 * addresses. If this option is turned on and the socket is type
6674 * PF_INET6, then IPv4 addresses will be mapp 6668 * PF_INET6, then IPv4 addresses will be mapped to V6 representation.
6675 * If this option is turned off, then no mapp 6669 * If this option is turned off, then no mapping will be done of V4
6676 * addresses and a user will receive both PF_ 6670 * addresses and a user will receive both PF_INET6 and PF_INET type
6677 * addresses on the socket. 6671 * addresses on the socket.
6678 */ 6672 */
6679 static int sctp_getsockopt_mappedv4(struct so 6673 static int sctp_getsockopt_mappedv4(struct sock *sk, int len,
6680 char __us 6674 char __user *optval, int __user *optlen)
6681 { 6675 {
6682 int val; 6676 int val;
6683 struct sctp_sock *sp = sctp_sk(sk); 6677 struct sctp_sock *sp = sctp_sk(sk);
6684 6678
6685 if (len < sizeof(int)) 6679 if (len < sizeof(int))
6686 return -EINVAL; 6680 return -EINVAL;
6687 6681
6688 len = sizeof(int); 6682 len = sizeof(int);
6689 val = sp->v4mapped; 6683 val = sp->v4mapped;
6690 if (put_user(len, optlen)) 6684 if (put_user(len, optlen))
6691 return -EFAULT; 6685 return -EFAULT;
6692 if (copy_to_user(optval, &val, len)) 6686 if (copy_to_user(optval, &val, len))
6693 return -EFAULT; 6687 return -EFAULT;
6694 6688
6695 return 0; 6689 return 0;
6696 } 6690 }
6697 6691
6698 /* 6692 /*
6699 * 7.1.29. Set or Get the default context (S 6693 * 7.1.29. Set or Get the default context (SCTP_CONTEXT)
6700 * (chapter and verse is quoted at sctp_setso 6694 * (chapter and verse is quoted at sctp_setsockopt_context())
6701 */ 6695 */
6702 static int sctp_getsockopt_context(struct soc 6696 static int sctp_getsockopt_context(struct sock *sk, int len,
6703 char __use 6697 char __user *optval, int __user *optlen)
6704 { 6698 {
6705 struct sctp_assoc_value params; 6699 struct sctp_assoc_value params;
6706 struct sctp_association *asoc; 6700 struct sctp_association *asoc;
6707 6701
6708 if (len < sizeof(struct sctp_assoc_va 6702 if (len < sizeof(struct sctp_assoc_value))
6709 return -EINVAL; 6703 return -EINVAL;
6710 6704
6711 len = sizeof(struct sctp_assoc_value) 6705 len = sizeof(struct sctp_assoc_value);
6712 6706
6713 if (copy_from_user(¶ms, optval, l 6707 if (copy_from_user(¶ms, optval, len))
6714 return -EFAULT; 6708 return -EFAULT;
6715 6709
6716 asoc = sctp_id2assoc(sk, params.assoc 6710 asoc = sctp_id2assoc(sk, params.assoc_id);
6717 if (!asoc && params.assoc_id != SCTP_ 6711 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
6718 sctp_style(sk, UDP)) 6712 sctp_style(sk, UDP))
6719 return -EINVAL; 6713 return -EINVAL;
6720 6714
6721 params.assoc_value = asoc ? asoc->def 6715 params.assoc_value = asoc ? asoc->default_rcv_context
6722 : sctp_sk(s 6716 : sctp_sk(sk)->default_rcv_context;
6723 6717
6724 if (put_user(len, optlen)) 6718 if (put_user(len, optlen))
6725 return -EFAULT; 6719 return -EFAULT;
6726 if (copy_to_user(optval, ¶ms, len 6720 if (copy_to_user(optval, ¶ms, len))
6727 return -EFAULT; 6721 return -EFAULT;
6728 6722
6729 return 0; 6723 return 0;
6730 } 6724 }
6731 6725
6732 /* 6726 /*
6733 * 8.1.16. Get or Set the Maximum Fragmentat 6727 * 8.1.16. Get or Set the Maximum Fragmentation Size (SCTP_MAXSEG)
6734 * This option will get or set the maximum si 6728 * This option will get or set the maximum size to put in any outgoing
6735 * SCTP DATA chunk. If a message is larger t 6729 * SCTP DATA chunk. If a message is larger than this size it will be
6736 * fragmented by SCTP into the specified size 6730 * fragmented by SCTP into the specified size. Note that the underlying
6737 * SCTP implementation may fragment into smal 6731 * SCTP implementation may fragment into smaller sized chunks when the
6738 * PMTU of the underlying association is smal 6732 * PMTU of the underlying association is smaller than the value set by
6739 * the user. The default value for this opti 6733 * the user. The default value for this option is '' which indicates
6740 * the user is NOT limiting fragmentation and 6734 * the user is NOT limiting fragmentation and only the PMTU will effect
6741 * SCTP's choice of DATA chunk size. Note al 6735 * SCTP's choice of DATA chunk size. Note also that values set larger
6742 * than the maximum size of an IP datagram wi 6736 * than the maximum size of an IP datagram will effectively let SCTP
6743 * control fragmentation (i.e. the same as se 6737 * control fragmentation (i.e. the same as setting this option to 0).
6744 * 6738 *
6745 * The following structure is used to access 6739 * The following structure is used to access and modify this parameter:
6746 * 6740 *
6747 * struct sctp_assoc_value { 6741 * struct sctp_assoc_value {
6748 * sctp_assoc_t assoc_id; 6742 * sctp_assoc_t assoc_id;
6749 * uint32_t assoc_value; 6743 * uint32_t assoc_value;
6750 * }; 6744 * };
6751 * 6745 *
6752 * assoc_id: This parameter is ignored for o 6746 * assoc_id: This parameter is ignored for one-to-one style sockets.
6753 * For one-to-many style sockets this para 6747 * For one-to-many style sockets this parameter indicates which
6754 * association the user is performing an a 6748 * association the user is performing an action upon. Note that if
6755 * this field's value is zero then the end 6749 * this field's value is zero then the endpoints default value is
6756 * changed (effecting future associations 6750 * changed (effecting future associations only).
6757 * assoc_value: This parameter specifies the 6751 * assoc_value: This parameter specifies the maximum size in bytes.
6758 */ 6752 */
6759 static int sctp_getsockopt_maxseg(struct sock 6753 static int sctp_getsockopt_maxseg(struct sock *sk, int len,
6760 char __user 6754 char __user *optval, int __user *optlen)
6761 { 6755 {
6762 struct sctp_assoc_value params; 6756 struct sctp_assoc_value params;
6763 struct sctp_association *asoc; 6757 struct sctp_association *asoc;
6764 6758
6765 if (len == sizeof(int)) { 6759 if (len == sizeof(int)) {
6766 pr_warn_ratelimited(DEPRECATE 6760 pr_warn_ratelimited(DEPRECATED
6767 "%s (pid 6761 "%s (pid %d) "
6768 "Use of i 6762 "Use of int in maxseg socket option.\n"
6769 "Use stru 6763 "Use struct sctp_assoc_value instead\n",
6770 current-> 6764 current->comm, task_pid_nr(current));
6771 params.assoc_id = SCTP_FUTURE 6765 params.assoc_id = SCTP_FUTURE_ASSOC;
6772 } else if (len >= sizeof(struct sctp_ 6766 } else if (len >= sizeof(struct sctp_assoc_value)) {
6773 len = sizeof(struct sctp_asso 6767 len = sizeof(struct sctp_assoc_value);
6774 if (copy_from_user(¶ms, o 6768 if (copy_from_user(¶ms, optval, len))
6775 return -EFAULT; 6769 return -EFAULT;
6776 } else 6770 } else
6777 return -EINVAL; 6771 return -EINVAL;
6778 6772
6779 asoc = sctp_id2assoc(sk, params.assoc 6773 asoc = sctp_id2assoc(sk, params.assoc_id);
6780 if (!asoc && params.assoc_id != SCTP_ 6774 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
6781 sctp_style(sk, UDP)) 6775 sctp_style(sk, UDP))
6782 return -EINVAL; 6776 return -EINVAL;
6783 6777
6784 if (asoc) 6778 if (asoc)
6785 params.assoc_value = asoc->fr 6779 params.assoc_value = asoc->frag_point;
6786 else 6780 else
6787 params.assoc_value = sctp_sk( 6781 params.assoc_value = sctp_sk(sk)->user_frag;
6788 6782
6789 if (put_user(len, optlen)) 6783 if (put_user(len, optlen))
6790 return -EFAULT; 6784 return -EFAULT;
6791 if (len == sizeof(int)) { 6785 if (len == sizeof(int)) {
6792 if (copy_to_user(optval, &par 6786 if (copy_to_user(optval, ¶ms.assoc_value, len))
6793 return -EFAULT; 6787 return -EFAULT;
6794 } else { 6788 } else {
6795 if (copy_to_user(optval, &par 6789 if (copy_to_user(optval, ¶ms, len))
6796 return -EFAULT; 6790 return -EFAULT;
6797 } 6791 }
6798 6792
6799 return 0; 6793 return 0;
6800 } 6794 }
6801 6795
6802 /* 6796 /*
6803 * 7.1.24. Get or set fragmented interleave 6797 * 7.1.24. Get or set fragmented interleave (SCTP_FRAGMENT_INTERLEAVE)
6804 * (chapter and verse is quoted at sctp_setso 6798 * (chapter and verse is quoted at sctp_setsockopt_fragment_interleave())
6805 */ 6799 */
6806 static int sctp_getsockopt_fragment_interleav 6800 static int sctp_getsockopt_fragment_interleave(struct sock *sk, int len,
6807 6801 char __user *optval, int __user *optlen)
6808 { 6802 {
6809 int val; 6803 int val;
6810 6804
6811 if (len < sizeof(int)) 6805 if (len < sizeof(int))
6812 return -EINVAL; 6806 return -EINVAL;
6813 6807
6814 len = sizeof(int); 6808 len = sizeof(int);
6815 6809
6816 val = sctp_sk(sk)->frag_interleave; 6810 val = sctp_sk(sk)->frag_interleave;
6817 if (put_user(len, optlen)) 6811 if (put_user(len, optlen))
6818 return -EFAULT; 6812 return -EFAULT;
6819 if (copy_to_user(optval, &val, len)) 6813 if (copy_to_user(optval, &val, len))
6820 return -EFAULT; 6814 return -EFAULT;
6821 6815
6822 return 0; 6816 return 0;
6823 } 6817 }
6824 6818
6825 /* 6819 /*
6826 * 7.1.25. Set or Get the sctp partial deliv 6820 * 7.1.25. Set or Get the sctp partial delivery point
6827 * (chapter and verse is quoted at sctp_setso 6821 * (chapter and verse is quoted at sctp_setsockopt_partial_delivery_point())
6828 */ 6822 */
6829 static int sctp_getsockopt_partial_delivery_p 6823 static int sctp_getsockopt_partial_delivery_point(struct sock *sk, int len,
6830 6824 char __user *optval,
6831 6825 int __user *optlen)
6832 { 6826 {
6833 u32 val; 6827 u32 val;
6834 6828
6835 if (len < sizeof(u32)) 6829 if (len < sizeof(u32))
6836 return -EINVAL; 6830 return -EINVAL;
6837 6831
6838 len = sizeof(u32); 6832 len = sizeof(u32);
6839 6833
6840 val = sctp_sk(sk)->pd_point; 6834 val = sctp_sk(sk)->pd_point;
6841 if (put_user(len, optlen)) 6835 if (put_user(len, optlen))
6842 return -EFAULT; 6836 return -EFAULT;
6843 if (copy_to_user(optval, &val, len)) 6837 if (copy_to_user(optval, &val, len))
6844 return -EFAULT; 6838 return -EFAULT;
6845 6839
6846 return 0; 6840 return 0;
6847 } 6841 }
6848 6842
6849 /* 6843 /*
6850 * 7.1.28. Set or Get the maximum burst (SCT 6844 * 7.1.28. Set or Get the maximum burst (SCTP_MAX_BURST)
6851 * (chapter and verse is quoted at sctp_setso 6845 * (chapter and verse is quoted at sctp_setsockopt_maxburst())
6852 */ 6846 */
6853 static int sctp_getsockopt_maxburst(struct so 6847 static int sctp_getsockopt_maxburst(struct sock *sk, int len,
6854 char __us 6848 char __user *optval,
6855 int __use 6849 int __user *optlen)
6856 { 6850 {
6857 struct sctp_assoc_value params; 6851 struct sctp_assoc_value params;
6858 struct sctp_association *asoc; 6852 struct sctp_association *asoc;
6859 6853
6860 if (len == sizeof(int)) { 6854 if (len == sizeof(int)) {
6861 pr_warn_ratelimited(DEPRECATE 6855 pr_warn_ratelimited(DEPRECATED
6862 "%s (pid 6856 "%s (pid %d) "
6863 "Use of i 6857 "Use of int in max_burst socket option.\n"
6864 "Use stru 6858 "Use struct sctp_assoc_value instead\n",
6865 current-> 6859 current->comm, task_pid_nr(current));
6866 params.assoc_id = SCTP_FUTURE 6860 params.assoc_id = SCTP_FUTURE_ASSOC;
6867 } else if (len >= sizeof(struct sctp_ 6861 } else if (len >= sizeof(struct sctp_assoc_value)) {
6868 len = sizeof(struct sctp_asso 6862 len = sizeof(struct sctp_assoc_value);
6869 if (copy_from_user(¶ms, o 6863 if (copy_from_user(¶ms, optval, len))
6870 return -EFAULT; 6864 return -EFAULT;
6871 } else 6865 } else
6872 return -EINVAL; 6866 return -EINVAL;
6873 6867
6874 asoc = sctp_id2assoc(sk, params.assoc 6868 asoc = sctp_id2assoc(sk, params.assoc_id);
6875 if (!asoc && params.assoc_id != SCTP_ 6869 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
6876 sctp_style(sk, UDP)) 6870 sctp_style(sk, UDP))
6877 return -EINVAL; 6871 return -EINVAL;
6878 6872
6879 params.assoc_value = asoc ? asoc->max 6873 params.assoc_value = asoc ? asoc->max_burst : sctp_sk(sk)->max_burst;
6880 6874
6881 if (len == sizeof(int)) { 6875 if (len == sizeof(int)) {
6882 if (copy_to_user(optval, &par 6876 if (copy_to_user(optval, ¶ms.assoc_value, len))
6883 return -EFAULT; 6877 return -EFAULT;
6884 } else { 6878 } else {
6885 if (copy_to_user(optval, &par 6879 if (copy_to_user(optval, ¶ms, len))
6886 return -EFAULT; 6880 return -EFAULT;
6887 } 6881 }
6888 6882
6889 return 0; 6883 return 0;
6890 6884
6891 } 6885 }
6892 6886
6893 static int sctp_getsockopt_hmac_ident(struct 6887 static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
6894 char __us 6888 char __user *optval, int __user *optlen)
6895 { 6889 {
6896 struct sctp_endpoint *ep = sctp_sk(sk 6890 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
6897 struct sctp_hmacalgo __user *p = (vo 6891 struct sctp_hmacalgo __user *p = (void __user *)optval;
6898 struct sctp_hmac_algo_param *hmacs; 6892 struct sctp_hmac_algo_param *hmacs;
6899 __u16 data_len = 0; 6893 __u16 data_len = 0;
6900 u32 num_idents; 6894 u32 num_idents;
6901 int i; 6895 int i;
6902 6896
6903 if (!ep->auth_enable) 6897 if (!ep->auth_enable)
6904 return -EACCES; 6898 return -EACCES;
6905 6899
6906 hmacs = ep->auth_hmacs_list; 6900 hmacs = ep->auth_hmacs_list;
6907 data_len = ntohs(hmacs->param_hdr.len 6901 data_len = ntohs(hmacs->param_hdr.length) -
6908 sizeof(struct sctp_paramhd 6902 sizeof(struct sctp_paramhdr);
6909 6903
6910 if (len < sizeof(struct sctp_hmacalgo 6904 if (len < sizeof(struct sctp_hmacalgo) + data_len)
6911 return -EINVAL; 6905 return -EINVAL;
6912 6906
6913 len = sizeof(struct sctp_hmacalgo) + 6907 len = sizeof(struct sctp_hmacalgo) + data_len;
6914 num_idents = data_len / sizeof(u16); 6908 num_idents = data_len / sizeof(u16);
6915 6909
6916 if (put_user(len, optlen)) 6910 if (put_user(len, optlen))
6917 return -EFAULT; 6911 return -EFAULT;
6918 if (put_user(num_idents, &p->shmac_nu 6912 if (put_user(num_idents, &p->shmac_num_idents))
6919 return -EFAULT; 6913 return -EFAULT;
6920 for (i = 0; i < num_idents; i++) { 6914 for (i = 0; i < num_idents; i++) {
6921 __u16 hmacid = ntohs(hmacs->h 6915 __u16 hmacid = ntohs(hmacs->hmac_ids[i]);
6922 6916
6923 if (copy_to_user(&p->shmac_id 6917 if (copy_to_user(&p->shmac_idents[i], &hmacid, sizeof(__u16)))
6924 return -EFAULT; 6918 return -EFAULT;
6925 } 6919 }
6926 return 0; 6920 return 0;
6927 } 6921 }
6928 6922
6929 static int sctp_getsockopt_active_key(struct 6923 static int sctp_getsockopt_active_key(struct sock *sk, int len,
6930 char __us 6924 char __user *optval, int __user *optlen)
6931 { 6925 {
6932 struct sctp_endpoint *ep = sctp_sk(sk 6926 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
6933 struct sctp_authkeyid val; 6927 struct sctp_authkeyid val;
6934 struct sctp_association *asoc; 6928 struct sctp_association *asoc;
6935 6929
6936 if (len < sizeof(struct sctp_authkeyi 6930 if (len < sizeof(struct sctp_authkeyid))
6937 return -EINVAL; 6931 return -EINVAL;
6938 6932
6939 len = sizeof(struct sctp_authkeyid); 6933 len = sizeof(struct sctp_authkeyid);
6940 if (copy_from_user(&val, optval, len) 6934 if (copy_from_user(&val, optval, len))
6941 return -EFAULT; 6935 return -EFAULT;
6942 6936
6943 asoc = sctp_id2assoc(sk, val.scact_as 6937 asoc = sctp_id2assoc(sk, val.scact_assoc_id);
6944 if (!asoc && val.scact_assoc_id && sc 6938 if (!asoc && val.scact_assoc_id && sctp_style(sk, UDP))
6945 return -EINVAL; 6939 return -EINVAL;
6946 6940
6947 if (asoc) { 6941 if (asoc) {
6948 if (!asoc->peer.auth_capable) 6942 if (!asoc->peer.auth_capable)
6949 return -EACCES; 6943 return -EACCES;
6950 val.scact_keynumber = asoc->a 6944 val.scact_keynumber = asoc->active_key_id;
6951 } else { 6945 } else {
6952 if (!ep->auth_enable) 6946 if (!ep->auth_enable)
6953 return -EACCES; 6947 return -EACCES;
6954 val.scact_keynumber = ep->act 6948 val.scact_keynumber = ep->active_key_id;
6955 } 6949 }
6956 6950
6957 if (put_user(len, optlen)) 6951 if (put_user(len, optlen))
6958 return -EFAULT; 6952 return -EFAULT;
6959 if (copy_to_user(optval, &val, len)) 6953 if (copy_to_user(optval, &val, len))
6960 return -EFAULT; 6954 return -EFAULT;
6961 6955
6962 return 0; 6956 return 0;
6963 } 6957 }
6964 6958
6965 static int sctp_getsockopt_peer_auth_chunks(s 6959 static int sctp_getsockopt_peer_auth_chunks(struct sock *sk, int len,
6966 char __us 6960 char __user *optval, int __user *optlen)
6967 { 6961 {
6968 struct sctp_authchunks __user *p = (v 6962 struct sctp_authchunks __user *p = (void __user *)optval;
6969 struct sctp_authchunks val; 6963 struct sctp_authchunks val;
6970 struct sctp_association *asoc; 6964 struct sctp_association *asoc;
6971 struct sctp_chunks_param *ch; 6965 struct sctp_chunks_param *ch;
6972 u32 num_chunks = 0; 6966 u32 num_chunks = 0;
6973 char __user *to; 6967 char __user *to;
6974 6968
6975 if (len < sizeof(struct sctp_authchun 6969 if (len < sizeof(struct sctp_authchunks))
6976 return -EINVAL; 6970 return -EINVAL;
6977 6971
6978 if (copy_from_user(&val, optval, size 6972 if (copy_from_user(&val, optval, sizeof(val)))
6979 return -EFAULT; 6973 return -EFAULT;
6980 6974
6981 to = p->gauth_chunks; 6975 to = p->gauth_chunks;
6982 asoc = sctp_id2assoc(sk, val.gauth_as 6976 asoc = sctp_id2assoc(sk, val.gauth_assoc_id);
6983 if (!asoc) 6977 if (!asoc)
6984 return -EINVAL; 6978 return -EINVAL;
6985 6979
6986 if (!asoc->peer.auth_capable) 6980 if (!asoc->peer.auth_capable)
6987 return -EACCES; 6981 return -EACCES;
6988 6982
6989 ch = asoc->peer.peer_chunks; 6983 ch = asoc->peer.peer_chunks;
6990 if (!ch) 6984 if (!ch)
6991 goto num; 6985 goto num;
6992 6986
6993 /* See if the user provided enough ro 6987 /* See if the user provided enough room for all the data */
6994 num_chunks = ntohs(ch->param_hdr.leng 6988 num_chunks = ntohs(ch->param_hdr.length) - sizeof(struct sctp_paramhdr);
6995 if (len < num_chunks) 6989 if (len < num_chunks)
6996 return -EINVAL; 6990 return -EINVAL;
6997 6991
6998 if (copy_to_user(to, ch->chunks, num_ 6992 if (copy_to_user(to, ch->chunks, num_chunks))
6999 return -EFAULT; 6993 return -EFAULT;
7000 num: 6994 num:
7001 len = sizeof(struct sctp_authchunks) 6995 len = sizeof(struct sctp_authchunks) + num_chunks;
7002 if (put_user(len, optlen)) 6996 if (put_user(len, optlen))
7003 return -EFAULT; 6997 return -EFAULT;
7004 if (put_user(num_chunks, &p->gauth_nu 6998 if (put_user(num_chunks, &p->gauth_number_of_chunks))
7005 return -EFAULT; 6999 return -EFAULT;
7006 return 0; 7000 return 0;
7007 } 7001 }
7008 7002
7009 static int sctp_getsockopt_local_auth_chunks( 7003 static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
7010 char __us 7004 char __user *optval, int __user *optlen)
7011 { 7005 {
7012 struct sctp_endpoint *ep = sctp_sk(sk 7006 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
7013 struct sctp_authchunks __user *p = (v 7007 struct sctp_authchunks __user *p = (void __user *)optval;
7014 struct sctp_authchunks val; 7008 struct sctp_authchunks val;
7015 struct sctp_association *asoc; 7009 struct sctp_association *asoc;
7016 struct sctp_chunks_param *ch; 7010 struct sctp_chunks_param *ch;
7017 u32 num_chunks = 0; 7011 u32 num_chunks = 0;
7018 char __user *to; 7012 char __user *to;
7019 7013
7020 if (len < sizeof(struct sctp_authchun 7014 if (len < sizeof(struct sctp_authchunks))
7021 return -EINVAL; 7015 return -EINVAL;
7022 7016
7023 if (copy_from_user(&val, optval, size 7017 if (copy_from_user(&val, optval, sizeof(val)))
7024 return -EFAULT; 7018 return -EFAULT;
7025 7019
7026 to = p->gauth_chunks; 7020 to = p->gauth_chunks;
7027 asoc = sctp_id2assoc(sk, val.gauth_as 7021 asoc = sctp_id2assoc(sk, val.gauth_assoc_id);
7028 if (!asoc && val.gauth_assoc_id != SC 7022 if (!asoc && val.gauth_assoc_id != SCTP_FUTURE_ASSOC &&
7029 sctp_style(sk, UDP)) 7023 sctp_style(sk, UDP))
7030 return -EINVAL; 7024 return -EINVAL;
7031 7025
7032 if (asoc) { 7026 if (asoc) {
7033 if (!asoc->peer.auth_capable) 7027 if (!asoc->peer.auth_capable)
7034 return -EACCES; 7028 return -EACCES;
7035 ch = (struct sctp_chunks_para 7029 ch = (struct sctp_chunks_param *)asoc->c.auth_chunks;
7036 } else { 7030 } else {
7037 if (!ep->auth_enable) 7031 if (!ep->auth_enable)
7038 return -EACCES; 7032 return -EACCES;
7039 ch = ep->auth_chunk_list; 7033 ch = ep->auth_chunk_list;
7040 } 7034 }
7041 if (!ch) 7035 if (!ch)
7042 goto num; 7036 goto num;
7043 7037
7044 num_chunks = ntohs(ch->param_hdr.leng 7038 num_chunks = ntohs(ch->param_hdr.length) - sizeof(struct sctp_paramhdr);
7045 if (len < sizeof(struct sctp_authchun 7039 if (len < sizeof(struct sctp_authchunks) + num_chunks)
7046 return -EINVAL; 7040 return -EINVAL;
7047 7041
7048 if (copy_to_user(to, ch->chunks, num_ 7042 if (copy_to_user(to, ch->chunks, num_chunks))
7049 return -EFAULT; 7043 return -EFAULT;
7050 num: 7044 num:
7051 len = sizeof(struct sctp_authchunks) 7045 len = sizeof(struct sctp_authchunks) + num_chunks;
7052 if (put_user(len, optlen)) 7046 if (put_user(len, optlen))
7053 return -EFAULT; 7047 return -EFAULT;
7054 if (put_user(num_chunks, &p->gauth_nu 7048 if (put_user(num_chunks, &p->gauth_number_of_chunks))
7055 return -EFAULT; 7049 return -EFAULT;
7056 7050
7057 return 0; 7051 return 0;
7058 } 7052 }
7059 7053
7060 /* 7054 /*
7061 * 8.2.5. Get the Current Number of Associat 7055 * 8.2.5. Get the Current Number of Associations (SCTP_GET_ASSOC_NUMBER)
7062 * This option gets the current number of ass 7056 * This option gets the current number of associations that are attached
7063 * to a one-to-many style socket. The option 7057 * to a one-to-many style socket. The option value is an uint32_t.
7064 */ 7058 */
7065 static int sctp_getsockopt_assoc_number(struc 7059 static int sctp_getsockopt_assoc_number(struct sock *sk, int len,
7066 char __us 7060 char __user *optval, int __user *optlen)
7067 { 7061 {
7068 struct sctp_sock *sp = sctp_sk(sk); 7062 struct sctp_sock *sp = sctp_sk(sk);
7069 struct sctp_association *asoc; 7063 struct sctp_association *asoc;
7070 u32 val = 0; 7064 u32 val = 0;
7071 7065
7072 if (sctp_style(sk, TCP)) 7066 if (sctp_style(sk, TCP))
7073 return -EOPNOTSUPP; 7067 return -EOPNOTSUPP;
7074 7068
7075 if (len < sizeof(u32)) 7069 if (len < sizeof(u32))
7076 return -EINVAL; 7070 return -EINVAL;
7077 7071
7078 len = sizeof(u32); 7072 len = sizeof(u32);
7079 7073
7080 list_for_each_entry(asoc, &(sp->ep->a 7074 list_for_each_entry(asoc, &(sp->ep->asocs), asocs) {
7081 val++; 7075 val++;
7082 } 7076 }
7083 7077
7084 if (put_user(len, optlen)) 7078 if (put_user(len, optlen))
7085 return -EFAULT; 7079 return -EFAULT;
7086 if (copy_to_user(optval, &val, len)) 7080 if (copy_to_user(optval, &val, len))
7087 return -EFAULT; 7081 return -EFAULT;
7088 7082
7089 return 0; 7083 return 0;
7090 } 7084 }
7091 7085
7092 /* 7086 /*
7093 * 8.1.23 SCTP_AUTO_ASCONF 7087 * 8.1.23 SCTP_AUTO_ASCONF
7094 * See the corresponding setsockopt entry as 7088 * See the corresponding setsockopt entry as description
7095 */ 7089 */
7096 static int sctp_getsockopt_auto_asconf(struct 7090 static int sctp_getsockopt_auto_asconf(struct sock *sk, int len,
7097 char __use 7091 char __user *optval, int __user *optlen)
7098 { 7092 {
7099 int val = 0; 7093 int val = 0;
7100 7094
7101 if (len < sizeof(int)) 7095 if (len < sizeof(int))
7102 return -EINVAL; 7096 return -EINVAL;
7103 7097
7104 len = sizeof(int); 7098 len = sizeof(int);
7105 if (sctp_sk(sk)->do_auto_asconf && sc 7099 if (sctp_sk(sk)->do_auto_asconf && sctp_is_ep_boundall(sk))
7106 val = 1; 7100 val = 1;
7107 if (put_user(len, optlen)) 7101 if (put_user(len, optlen))
7108 return -EFAULT; 7102 return -EFAULT;
7109 if (copy_to_user(optval, &val, len)) 7103 if (copy_to_user(optval, &val, len))
7110 return -EFAULT; 7104 return -EFAULT;
7111 return 0; 7105 return 0;
7112 } 7106 }
7113 7107
7114 /* 7108 /*
7115 * 8.2.6. Get the Current Identifiers of Asso 7109 * 8.2.6. Get the Current Identifiers of Associations
7116 * (SCTP_GET_ASSOC_ID_LIST) 7110 * (SCTP_GET_ASSOC_ID_LIST)
7117 * 7111 *
7118 * This option gets the current list of SCTP 7112 * This option gets the current list of SCTP association identifiers of
7119 * the SCTP associations handled by a one-to- 7113 * the SCTP associations handled by a one-to-many style socket.
7120 */ 7114 */
7121 static int sctp_getsockopt_assoc_ids(struct s 7115 static int sctp_getsockopt_assoc_ids(struct sock *sk, int len,
7122 char __us 7116 char __user *optval, int __user *optlen)
7123 { 7117 {
7124 struct sctp_sock *sp = sctp_sk(sk); 7118 struct sctp_sock *sp = sctp_sk(sk);
7125 struct sctp_association *asoc; 7119 struct sctp_association *asoc;
7126 struct sctp_assoc_ids *ids; 7120 struct sctp_assoc_ids *ids;
7127 size_t ids_size; <<
7128 u32 num = 0; 7121 u32 num = 0;
7129 7122
7130 if (sctp_style(sk, TCP)) 7123 if (sctp_style(sk, TCP))
7131 return -EOPNOTSUPP; 7124 return -EOPNOTSUPP;
7132 7125
7133 if (len < sizeof(struct sctp_assoc_id 7126 if (len < sizeof(struct sctp_assoc_ids))
7134 return -EINVAL; 7127 return -EINVAL;
7135 7128
7136 list_for_each_entry(asoc, &(sp->ep->a 7129 list_for_each_entry(asoc, &(sp->ep->asocs), asocs) {
7137 num++; 7130 num++;
7138 } 7131 }
7139 7132
7140 ids_size = struct_size(ids, gaids_ass !! 7133 if (len < sizeof(struct sctp_assoc_ids) + sizeof(sctp_assoc_t) * num)
7141 if (len < ids_size) <<
7142 return -EINVAL; 7134 return -EINVAL;
7143 7135
7144 len = ids_size; !! 7136 len = sizeof(struct sctp_assoc_ids) + sizeof(sctp_assoc_t) * num;
>> 7137
7145 ids = kmalloc(len, GFP_USER | __GFP_N 7138 ids = kmalloc(len, GFP_USER | __GFP_NOWARN);
7146 if (unlikely(!ids)) 7139 if (unlikely(!ids))
7147 return -ENOMEM; 7140 return -ENOMEM;
7148 7141
7149 ids->gaids_number_of_ids = num; 7142 ids->gaids_number_of_ids = num;
7150 num = 0; 7143 num = 0;
7151 list_for_each_entry(asoc, &(sp->ep->a 7144 list_for_each_entry(asoc, &(sp->ep->asocs), asocs) {
7152 ids->gaids_assoc_id[num++] = 7145 ids->gaids_assoc_id[num++] = asoc->assoc_id;
7153 } 7146 }
7154 7147
7155 if (put_user(len, optlen) || copy_to_ 7148 if (put_user(len, optlen) || copy_to_user(optval, ids, len)) {
7156 kfree(ids); 7149 kfree(ids);
7157 return -EFAULT; 7150 return -EFAULT;
7158 } 7151 }
7159 7152
7160 kfree(ids); 7153 kfree(ids);
7161 return 0; 7154 return 0;
7162 } 7155 }
7163 7156
7164 /* 7157 /*
7165 * SCTP_PEER_ADDR_THLDS 7158 * SCTP_PEER_ADDR_THLDS
7166 * 7159 *
7167 * This option allows us to fetch the partial 7160 * This option allows us to fetch the partially failed threshold for one or all
7168 * transports in an association. See Section 7161 * transports in an association. See Section 6.1 of:
7169 * http://www.ietf.org/id/draft-nishida-tsvwg 7162 * http://www.ietf.org/id/draft-nishida-tsvwg-sctp-failover-05.txt
7170 */ 7163 */
7171 static int sctp_getsockopt_paddr_thresholds(s 7164 static int sctp_getsockopt_paddr_thresholds(struct sock *sk,
7172 c 7165 char __user *optval, int len,
7173 i 7166 int __user *optlen, bool v2)
7174 { 7167 {
7175 struct sctp_paddrthlds_v2 val; 7168 struct sctp_paddrthlds_v2 val;
7176 struct sctp_transport *trans; 7169 struct sctp_transport *trans;
7177 struct sctp_association *asoc; 7170 struct sctp_association *asoc;
7178 int min; 7171 int min;
7179 7172
7180 min = v2 ? sizeof(val) : sizeof(struc 7173 min = v2 ? sizeof(val) : sizeof(struct sctp_paddrthlds);
7181 if (len < min) 7174 if (len < min)
7182 return -EINVAL; 7175 return -EINVAL;
7183 len = min; 7176 len = min;
7184 if (copy_from_user(&val, optval, len) 7177 if (copy_from_user(&val, optval, len))
7185 return -EFAULT; 7178 return -EFAULT;
7186 7179
7187 if (!sctp_is_any(sk, (const union sct 7180 if (!sctp_is_any(sk, (const union sctp_addr *)&val.spt_address)) {
7188 trans = sctp_addr_id2transpor 7181 trans = sctp_addr_id2transport(sk, &val.spt_address,
7189 7182 val.spt_assoc_id);
7190 if (!trans) 7183 if (!trans)
7191 return -ENOENT; 7184 return -ENOENT;
7192 7185
7193 val.spt_pathmaxrxt = trans->p 7186 val.spt_pathmaxrxt = trans->pathmaxrxt;
7194 val.spt_pathpfthld = trans->p 7187 val.spt_pathpfthld = trans->pf_retrans;
7195 val.spt_pathcpthld = trans->p 7188 val.spt_pathcpthld = trans->ps_retrans;
7196 7189
7197 goto out; 7190 goto out;
7198 } 7191 }
7199 7192
7200 asoc = sctp_id2assoc(sk, val.spt_asso 7193 asoc = sctp_id2assoc(sk, val.spt_assoc_id);
7201 if (!asoc && val.spt_assoc_id != SCTP 7194 if (!asoc && val.spt_assoc_id != SCTP_FUTURE_ASSOC &&
7202 sctp_style(sk, UDP)) 7195 sctp_style(sk, UDP))
7203 return -EINVAL; 7196 return -EINVAL;
7204 7197
7205 if (asoc) { 7198 if (asoc) {
7206 val.spt_pathpfthld = asoc->pf 7199 val.spt_pathpfthld = asoc->pf_retrans;
7207 val.spt_pathmaxrxt = asoc->pa 7200 val.spt_pathmaxrxt = asoc->pathmaxrxt;
7208 val.spt_pathcpthld = asoc->ps 7201 val.spt_pathcpthld = asoc->ps_retrans;
7209 } else { 7202 } else {
7210 struct sctp_sock *sp = sctp_s 7203 struct sctp_sock *sp = sctp_sk(sk);
7211 7204
7212 val.spt_pathpfthld = sp->pf_r 7205 val.spt_pathpfthld = sp->pf_retrans;
7213 val.spt_pathmaxrxt = sp->path 7206 val.spt_pathmaxrxt = sp->pathmaxrxt;
7214 val.spt_pathcpthld = sp->ps_r 7207 val.spt_pathcpthld = sp->ps_retrans;
7215 } 7208 }
7216 7209
7217 out: 7210 out:
7218 if (put_user(len, optlen) || copy_to_ 7211 if (put_user(len, optlen) || copy_to_user(optval, &val, len))
7219 return -EFAULT; 7212 return -EFAULT;
7220 7213
7221 return 0; 7214 return 0;
7222 } 7215 }
7223 7216
7224 /* 7217 /*
7225 * SCTP_GET_ASSOC_STATS 7218 * SCTP_GET_ASSOC_STATS
7226 * 7219 *
7227 * This option retrieves local per endpoint s 7220 * This option retrieves local per endpoint statistics. It is modeled
7228 * after OpenSolaris' implementation 7221 * after OpenSolaris' implementation
7229 */ 7222 */
7230 static int sctp_getsockopt_assoc_stats(struct 7223 static int sctp_getsockopt_assoc_stats(struct sock *sk, int len,
7231 char _ 7224 char __user *optval,
7232 int __ 7225 int __user *optlen)
7233 { 7226 {
7234 struct sctp_assoc_stats sas; 7227 struct sctp_assoc_stats sas;
7235 struct sctp_association *asoc = NULL; 7228 struct sctp_association *asoc = NULL;
7236 7229
7237 /* User must provide at least the ass 7230 /* User must provide at least the assoc id */
7238 if (len < sizeof(sctp_assoc_t)) 7231 if (len < sizeof(sctp_assoc_t))
7239 return -EINVAL; 7232 return -EINVAL;
7240 7233
7241 /* Allow the struct to grow and fill 7234 /* Allow the struct to grow and fill in as much as possible */
7242 len = min_t(size_t, len, sizeof(sas)) 7235 len = min_t(size_t, len, sizeof(sas));
7243 7236
7244 if (copy_from_user(&sas, optval, len) 7237 if (copy_from_user(&sas, optval, len))
7245 return -EFAULT; 7238 return -EFAULT;
7246 7239
7247 asoc = sctp_id2assoc(sk, sas.sas_asso 7240 asoc = sctp_id2assoc(sk, sas.sas_assoc_id);
7248 if (!asoc) 7241 if (!asoc)
7249 return -EINVAL; 7242 return -EINVAL;
7250 7243
7251 sas.sas_rtxchunks = asoc->stats.rtxch 7244 sas.sas_rtxchunks = asoc->stats.rtxchunks;
7252 sas.sas_gapcnt = asoc->stats.gapcnt; 7245 sas.sas_gapcnt = asoc->stats.gapcnt;
7253 sas.sas_outofseqtsns = asoc->stats.ou 7246 sas.sas_outofseqtsns = asoc->stats.outofseqtsns;
7254 sas.sas_osacks = asoc->stats.osacks; 7247 sas.sas_osacks = asoc->stats.osacks;
7255 sas.sas_isacks = asoc->stats.isacks; 7248 sas.sas_isacks = asoc->stats.isacks;
7256 sas.sas_octrlchunks = asoc->stats.oct 7249 sas.sas_octrlchunks = asoc->stats.octrlchunks;
7257 sas.sas_ictrlchunks = asoc->stats.ict 7250 sas.sas_ictrlchunks = asoc->stats.ictrlchunks;
7258 sas.sas_oodchunks = asoc->stats.oodch 7251 sas.sas_oodchunks = asoc->stats.oodchunks;
7259 sas.sas_iodchunks = asoc->stats.iodch 7252 sas.sas_iodchunks = asoc->stats.iodchunks;
7260 sas.sas_ouodchunks = asoc->stats.ouod 7253 sas.sas_ouodchunks = asoc->stats.ouodchunks;
7261 sas.sas_iuodchunks = asoc->stats.iuod 7254 sas.sas_iuodchunks = asoc->stats.iuodchunks;
7262 sas.sas_idupchunks = asoc->stats.idup 7255 sas.sas_idupchunks = asoc->stats.idupchunks;
7263 sas.sas_opackets = asoc->stats.opacke 7256 sas.sas_opackets = asoc->stats.opackets;
7264 sas.sas_ipackets = asoc->stats.ipacke 7257 sas.sas_ipackets = asoc->stats.ipackets;
7265 7258
7266 /* New high max rto observed, will re 7259 /* New high max rto observed, will return 0 if not a single
7267 * RTO update took place. obs_rto_ipa 7260 * RTO update took place. obs_rto_ipaddr will be bogus
7268 * in such a case 7261 * in such a case
7269 */ 7262 */
7270 sas.sas_maxrto = asoc->stats.max_obs_ 7263 sas.sas_maxrto = asoc->stats.max_obs_rto;
7271 memcpy(&sas.sas_obs_rto_ipaddr, &asoc 7264 memcpy(&sas.sas_obs_rto_ipaddr, &asoc->stats.obs_rto_ipaddr,
7272 sizeof(struct sockaddr_storag 7265 sizeof(struct sockaddr_storage));
7273 7266
7274 /* Mark beginning of a new observatio 7267 /* Mark beginning of a new observation period */
7275 asoc->stats.max_obs_rto = asoc->rto_m 7268 asoc->stats.max_obs_rto = asoc->rto_min;
7276 7269
7277 if (put_user(len, optlen)) 7270 if (put_user(len, optlen))
7278 return -EFAULT; 7271 return -EFAULT;
7279 7272
7280 pr_debug("%s: len:%d, assoc_id:%d\n", 7273 pr_debug("%s: len:%d, assoc_id:%d\n", __func__, len, sas.sas_assoc_id);
7281 7274
7282 if (copy_to_user(optval, &sas, len)) 7275 if (copy_to_user(optval, &sas, len))
7283 return -EFAULT; 7276 return -EFAULT;
7284 7277
7285 return 0; 7278 return 0;
7286 } 7279 }
7287 7280
7288 static int sctp_getsockopt_recvrcvinfo(struct 7281 static int sctp_getsockopt_recvrcvinfo(struct sock *sk, int len,
7289 char _ 7282 char __user *optval,
7290 int __ 7283 int __user *optlen)
7291 { 7284 {
7292 int val = 0; 7285 int val = 0;
7293 7286
7294 if (len < sizeof(int)) 7287 if (len < sizeof(int))
7295 return -EINVAL; 7288 return -EINVAL;
7296 7289
7297 len = sizeof(int); 7290 len = sizeof(int);
7298 if (sctp_sk(sk)->recvrcvinfo) 7291 if (sctp_sk(sk)->recvrcvinfo)
7299 val = 1; 7292 val = 1;
7300 if (put_user(len, optlen)) 7293 if (put_user(len, optlen))
7301 return -EFAULT; 7294 return -EFAULT;
7302 if (copy_to_user(optval, &val, len)) 7295 if (copy_to_user(optval, &val, len))
7303 return -EFAULT; 7296 return -EFAULT;
7304 7297
7305 return 0; 7298 return 0;
7306 } 7299 }
7307 7300
7308 static int sctp_getsockopt_recvnxtinfo(struct 7301 static int sctp_getsockopt_recvnxtinfo(struct sock *sk, int len,
7309 char _ 7302 char __user *optval,
7310 int __ 7303 int __user *optlen)
7311 { 7304 {
7312 int val = 0; 7305 int val = 0;
7313 7306
7314 if (len < sizeof(int)) 7307 if (len < sizeof(int))
7315 return -EINVAL; 7308 return -EINVAL;
7316 7309
7317 len = sizeof(int); 7310 len = sizeof(int);
7318 if (sctp_sk(sk)->recvnxtinfo) 7311 if (sctp_sk(sk)->recvnxtinfo)
7319 val = 1; 7312 val = 1;
7320 if (put_user(len, optlen)) 7313 if (put_user(len, optlen))
7321 return -EFAULT; 7314 return -EFAULT;
7322 if (copy_to_user(optval, &val, len)) 7315 if (copy_to_user(optval, &val, len))
7323 return -EFAULT; 7316 return -EFAULT;
7324 7317
7325 return 0; 7318 return 0;
7326 } 7319 }
7327 7320
7328 static int sctp_getsockopt_pr_supported(struc 7321 static int sctp_getsockopt_pr_supported(struct sock *sk, int len,
7329 char 7322 char __user *optval,
7330 int _ 7323 int __user *optlen)
7331 { 7324 {
7332 struct sctp_assoc_value params; 7325 struct sctp_assoc_value params;
7333 struct sctp_association *asoc; 7326 struct sctp_association *asoc;
7334 int retval = -EFAULT; 7327 int retval = -EFAULT;
7335 7328
7336 if (len < sizeof(params)) { 7329 if (len < sizeof(params)) {
7337 retval = -EINVAL; 7330 retval = -EINVAL;
7338 goto out; 7331 goto out;
7339 } 7332 }
7340 7333
7341 len = sizeof(params); 7334 len = sizeof(params);
7342 if (copy_from_user(¶ms, optval, l 7335 if (copy_from_user(¶ms, optval, len))
7343 goto out; 7336 goto out;
7344 7337
7345 asoc = sctp_id2assoc(sk, params.assoc 7338 asoc = sctp_id2assoc(sk, params.assoc_id);
7346 if (!asoc && params.assoc_id != SCTP_ 7339 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7347 sctp_style(sk, UDP)) { 7340 sctp_style(sk, UDP)) {
7348 retval = -EINVAL; 7341 retval = -EINVAL;
7349 goto out; 7342 goto out;
7350 } 7343 }
7351 7344
7352 params.assoc_value = asoc ? asoc->pee 7345 params.assoc_value = asoc ? asoc->peer.prsctp_capable
7353 : sctp_sk(s 7346 : sctp_sk(sk)->ep->prsctp_enable;
7354 7347
7355 if (put_user(len, optlen)) 7348 if (put_user(len, optlen))
7356 goto out; 7349 goto out;
7357 7350
7358 if (copy_to_user(optval, ¶ms, len 7351 if (copy_to_user(optval, ¶ms, len))
7359 goto out; 7352 goto out;
7360 7353
7361 retval = 0; 7354 retval = 0;
7362 7355
7363 out: 7356 out:
7364 return retval; 7357 return retval;
7365 } 7358 }
7366 7359
7367 static int sctp_getsockopt_default_prinfo(str 7360 static int sctp_getsockopt_default_prinfo(struct sock *sk, int len,
7368 cha 7361 char __user *optval,
7369 int 7362 int __user *optlen)
7370 { 7363 {
7371 struct sctp_default_prinfo info; 7364 struct sctp_default_prinfo info;
7372 struct sctp_association *asoc; 7365 struct sctp_association *asoc;
7373 int retval = -EFAULT; 7366 int retval = -EFAULT;
7374 7367
7375 if (len < sizeof(info)) { 7368 if (len < sizeof(info)) {
7376 retval = -EINVAL; 7369 retval = -EINVAL;
7377 goto out; 7370 goto out;
7378 } 7371 }
7379 7372
7380 len = sizeof(info); 7373 len = sizeof(info);
7381 if (copy_from_user(&info, optval, len 7374 if (copy_from_user(&info, optval, len))
7382 goto out; 7375 goto out;
7383 7376
7384 asoc = sctp_id2assoc(sk, info.pr_asso 7377 asoc = sctp_id2assoc(sk, info.pr_assoc_id);
7385 if (!asoc && info.pr_assoc_id != SCTP 7378 if (!asoc && info.pr_assoc_id != SCTP_FUTURE_ASSOC &&
7386 sctp_style(sk, UDP)) { 7379 sctp_style(sk, UDP)) {
7387 retval = -EINVAL; 7380 retval = -EINVAL;
7388 goto out; 7381 goto out;
7389 } 7382 }
7390 7383
7391 if (asoc) { 7384 if (asoc) {
7392 info.pr_policy = SCTP_PR_POLI 7385 info.pr_policy = SCTP_PR_POLICY(asoc->default_flags);
7393 info.pr_value = asoc->default 7386 info.pr_value = asoc->default_timetolive;
7394 } else { 7387 } else {
7395 struct sctp_sock *sp = sctp_s 7388 struct sctp_sock *sp = sctp_sk(sk);
7396 7389
7397 info.pr_policy = SCTP_PR_POLI 7390 info.pr_policy = SCTP_PR_POLICY(sp->default_flags);
7398 info.pr_value = sp->default_t 7391 info.pr_value = sp->default_timetolive;
7399 } 7392 }
7400 7393
7401 if (put_user(len, optlen)) 7394 if (put_user(len, optlen))
7402 goto out; 7395 goto out;
7403 7396
7404 if (copy_to_user(optval, &info, len)) 7397 if (copy_to_user(optval, &info, len))
7405 goto out; 7398 goto out;
7406 7399
7407 retval = 0; 7400 retval = 0;
7408 7401
7409 out: 7402 out:
7410 return retval; 7403 return retval;
7411 } 7404 }
7412 7405
7413 static int sctp_getsockopt_pr_assocstatus(str 7406 static int sctp_getsockopt_pr_assocstatus(struct sock *sk, int len,
7414 cha 7407 char __user *optval,
7415 int 7408 int __user *optlen)
7416 { 7409 {
7417 struct sctp_prstatus params; 7410 struct sctp_prstatus params;
7418 struct sctp_association *asoc; 7411 struct sctp_association *asoc;
7419 int policy; 7412 int policy;
7420 int retval = -EINVAL; 7413 int retval = -EINVAL;
7421 7414
7422 if (len < sizeof(params)) 7415 if (len < sizeof(params))
7423 goto out; 7416 goto out;
7424 7417
7425 len = sizeof(params); 7418 len = sizeof(params);
7426 if (copy_from_user(¶ms, optval, l 7419 if (copy_from_user(¶ms, optval, len)) {
7427 retval = -EFAULT; 7420 retval = -EFAULT;
7428 goto out; 7421 goto out;
7429 } 7422 }
7430 7423
7431 policy = params.sprstat_policy; 7424 policy = params.sprstat_policy;
7432 if (!policy || (policy & ~(SCTP_PR_SC 7425 if (!policy || (policy & ~(SCTP_PR_SCTP_MASK | SCTP_PR_SCTP_ALL)) ||
7433 ((policy & SCTP_PR_SCTP_ALL) && ( 7426 ((policy & SCTP_PR_SCTP_ALL) && (policy & SCTP_PR_SCTP_MASK)))
7434 goto out; 7427 goto out;
7435 7428
7436 asoc = sctp_id2assoc(sk, params.sprst 7429 asoc = sctp_id2assoc(sk, params.sprstat_assoc_id);
7437 if (!asoc) 7430 if (!asoc)
7438 goto out; 7431 goto out;
7439 7432
7440 if (policy == SCTP_PR_SCTP_ALL) { 7433 if (policy == SCTP_PR_SCTP_ALL) {
7441 params.sprstat_abandoned_unse 7434 params.sprstat_abandoned_unsent = 0;
7442 params.sprstat_abandoned_sent 7435 params.sprstat_abandoned_sent = 0;
7443 for (policy = 0; policy <= SC 7436 for (policy = 0; policy <= SCTP_PR_INDEX(MAX); policy++) {
7444 params.sprstat_abando 7437 params.sprstat_abandoned_unsent +=
7445 asoc->abandon 7438 asoc->abandoned_unsent[policy];
7446 params.sprstat_abando 7439 params.sprstat_abandoned_sent +=
7447 asoc->abandon 7440 asoc->abandoned_sent[policy];
7448 } 7441 }
7449 } else { 7442 } else {
7450 params.sprstat_abandoned_unse 7443 params.sprstat_abandoned_unsent =
7451 asoc->abandoned_unsen 7444 asoc->abandoned_unsent[__SCTP_PR_INDEX(policy)];
7452 params.sprstat_abandoned_sent 7445 params.sprstat_abandoned_sent =
7453 asoc->abandoned_sent[ 7446 asoc->abandoned_sent[__SCTP_PR_INDEX(policy)];
7454 } 7447 }
7455 7448
7456 if (put_user(len, optlen)) { 7449 if (put_user(len, optlen)) {
7457 retval = -EFAULT; 7450 retval = -EFAULT;
7458 goto out; 7451 goto out;
7459 } 7452 }
7460 7453
7461 if (copy_to_user(optval, ¶ms, len 7454 if (copy_to_user(optval, ¶ms, len)) {
7462 retval = -EFAULT; 7455 retval = -EFAULT;
7463 goto out; 7456 goto out;
7464 } 7457 }
7465 7458
7466 retval = 0; 7459 retval = 0;
7467 7460
7468 out: 7461 out:
7469 return retval; 7462 return retval;
7470 } 7463 }
7471 7464
7472 static int sctp_getsockopt_pr_streamstatus(st 7465 static int sctp_getsockopt_pr_streamstatus(struct sock *sk, int len,
7473 ch 7466 char __user *optval,
7474 in 7467 int __user *optlen)
7475 { 7468 {
7476 struct sctp_stream_out_ext *streamout 7469 struct sctp_stream_out_ext *streamoute;
7477 struct sctp_association *asoc; 7470 struct sctp_association *asoc;
7478 struct sctp_prstatus params; 7471 struct sctp_prstatus params;
7479 int retval = -EINVAL; 7472 int retval = -EINVAL;
7480 int policy; 7473 int policy;
7481 7474
7482 if (len < sizeof(params)) 7475 if (len < sizeof(params))
7483 goto out; 7476 goto out;
7484 7477
7485 len = sizeof(params); 7478 len = sizeof(params);
7486 if (copy_from_user(¶ms, optval, l 7479 if (copy_from_user(¶ms, optval, len)) {
7487 retval = -EFAULT; 7480 retval = -EFAULT;
7488 goto out; 7481 goto out;
7489 } 7482 }
7490 7483
7491 policy = params.sprstat_policy; 7484 policy = params.sprstat_policy;
7492 if (!policy || (policy & ~(SCTP_PR_SC 7485 if (!policy || (policy & ~(SCTP_PR_SCTP_MASK | SCTP_PR_SCTP_ALL)) ||
7493 ((policy & SCTP_PR_SCTP_ALL) && ( 7486 ((policy & SCTP_PR_SCTP_ALL) && (policy & SCTP_PR_SCTP_MASK)))
7494 goto out; 7487 goto out;
7495 7488
7496 asoc = sctp_id2assoc(sk, params.sprst 7489 asoc = sctp_id2assoc(sk, params.sprstat_assoc_id);
7497 if (!asoc || params.sprstat_sid >= as 7490 if (!asoc || params.sprstat_sid >= asoc->stream.outcnt)
7498 goto out; 7491 goto out;
7499 7492
7500 streamoute = SCTP_SO(&asoc->stream, p 7493 streamoute = SCTP_SO(&asoc->stream, params.sprstat_sid)->ext;
7501 if (!streamoute) { 7494 if (!streamoute) {
7502 /* Not allocated yet, means a 7495 /* Not allocated yet, means all stats are 0 */
7503 params.sprstat_abandoned_unse 7496 params.sprstat_abandoned_unsent = 0;
7504 params.sprstat_abandoned_sent 7497 params.sprstat_abandoned_sent = 0;
7505 retval = 0; 7498 retval = 0;
7506 goto out; 7499 goto out;
7507 } 7500 }
7508 7501
7509 if (policy == SCTP_PR_SCTP_ALL) { 7502 if (policy == SCTP_PR_SCTP_ALL) {
7510 params.sprstat_abandoned_unse 7503 params.sprstat_abandoned_unsent = 0;
7511 params.sprstat_abandoned_sent 7504 params.sprstat_abandoned_sent = 0;
7512 for (policy = 0; policy <= SC 7505 for (policy = 0; policy <= SCTP_PR_INDEX(MAX); policy++) {
7513 params.sprstat_abando 7506 params.sprstat_abandoned_unsent +=
7514 streamoute->a 7507 streamoute->abandoned_unsent[policy];
7515 params.sprstat_abando 7508 params.sprstat_abandoned_sent +=
7516 streamoute->a 7509 streamoute->abandoned_sent[policy];
7517 } 7510 }
7518 } else { 7511 } else {
7519 params.sprstat_abandoned_unse 7512 params.sprstat_abandoned_unsent =
7520 streamoute->abandoned 7513 streamoute->abandoned_unsent[__SCTP_PR_INDEX(policy)];
7521 params.sprstat_abandoned_sent 7514 params.sprstat_abandoned_sent =
7522 streamoute->abandoned 7515 streamoute->abandoned_sent[__SCTP_PR_INDEX(policy)];
7523 } 7516 }
7524 7517
7525 if (put_user(len, optlen) || copy_to_ 7518 if (put_user(len, optlen) || copy_to_user(optval, ¶ms, len)) {
7526 retval = -EFAULT; 7519 retval = -EFAULT;
7527 goto out; 7520 goto out;
7528 } 7521 }
7529 7522
7530 retval = 0; 7523 retval = 0;
7531 7524
7532 out: 7525 out:
7533 return retval; 7526 return retval;
7534 } 7527 }
7535 7528
7536 static int sctp_getsockopt_reconfig_supported 7529 static int sctp_getsockopt_reconfig_supported(struct sock *sk, int len,
7537 7530 char __user *optval,
7538 7531 int __user *optlen)
7539 { 7532 {
7540 struct sctp_assoc_value params; 7533 struct sctp_assoc_value params;
7541 struct sctp_association *asoc; 7534 struct sctp_association *asoc;
7542 int retval = -EFAULT; 7535 int retval = -EFAULT;
7543 7536
7544 if (len < sizeof(params)) { 7537 if (len < sizeof(params)) {
7545 retval = -EINVAL; 7538 retval = -EINVAL;
7546 goto out; 7539 goto out;
7547 } 7540 }
7548 7541
7549 len = sizeof(params); 7542 len = sizeof(params);
7550 if (copy_from_user(¶ms, optval, l 7543 if (copy_from_user(¶ms, optval, len))
7551 goto out; 7544 goto out;
7552 7545
7553 asoc = sctp_id2assoc(sk, params.assoc 7546 asoc = sctp_id2assoc(sk, params.assoc_id);
7554 if (!asoc && params.assoc_id != SCTP_ 7547 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7555 sctp_style(sk, UDP)) { 7548 sctp_style(sk, UDP)) {
7556 retval = -EINVAL; 7549 retval = -EINVAL;
7557 goto out; 7550 goto out;
7558 } 7551 }
7559 7552
7560 params.assoc_value = asoc ? asoc->pee 7553 params.assoc_value = asoc ? asoc->peer.reconf_capable
7561 : sctp_sk(s 7554 : sctp_sk(sk)->ep->reconf_enable;
7562 7555
7563 if (put_user(len, optlen)) 7556 if (put_user(len, optlen))
7564 goto out; 7557 goto out;
7565 7558
7566 if (copy_to_user(optval, ¶ms, len 7559 if (copy_to_user(optval, ¶ms, len))
7567 goto out; 7560 goto out;
7568 7561
7569 retval = 0; 7562 retval = 0;
7570 7563
7571 out: 7564 out:
7572 return retval; 7565 return retval;
7573 } 7566 }
7574 7567
7575 static int sctp_getsockopt_enable_strreset(st 7568 static int sctp_getsockopt_enable_strreset(struct sock *sk, int len,
7576 ch 7569 char __user *optval,
7577 in 7570 int __user *optlen)
7578 { 7571 {
7579 struct sctp_assoc_value params; 7572 struct sctp_assoc_value params;
7580 struct sctp_association *asoc; 7573 struct sctp_association *asoc;
7581 int retval = -EFAULT; 7574 int retval = -EFAULT;
7582 7575
7583 if (len < sizeof(params)) { 7576 if (len < sizeof(params)) {
7584 retval = -EINVAL; 7577 retval = -EINVAL;
7585 goto out; 7578 goto out;
7586 } 7579 }
7587 7580
7588 len = sizeof(params); 7581 len = sizeof(params);
7589 if (copy_from_user(¶ms, optval, l 7582 if (copy_from_user(¶ms, optval, len))
7590 goto out; 7583 goto out;
7591 7584
7592 asoc = sctp_id2assoc(sk, params.assoc 7585 asoc = sctp_id2assoc(sk, params.assoc_id);
7593 if (!asoc && params.assoc_id != SCTP_ 7586 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7594 sctp_style(sk, UDP)) { 7587 sctp_style(sk, UDP)) {
7595 retval = -EINVAL; 7588 retval = -EINVAL;
7596 goto out; 7589 goto out;
7597 } 7590 }
7598 7591
7599 params.assoc_value = asoc ? asoc->str 7592 params.assoc_value = asoc ? asoc->strreset_enable
7600 : sctp_sk(s 7593 : sctp_sk(sk)->ep->strreset_enable;
7601 7594
7602 if (put_user(len, optlen)) 7595 if (put_user(len, optlen))
7603 goto out; 7596 goto out;
7604 7597
7605 if (copy_to_user(optval, ¶ms, len 7598 if (copy_to_user(optval, ¶ms, len))
7606 goto out; 7599 goto out;
7607 7600
7608 retval = 0; 7601 retval = 0;
7609 7602
7610 out: 7603 out:
7611 return retval; 7604 return retval;
7612 } 7605 }
7613 7606
7614 static int sctp_getsockopt_scheduler(struct s 7607 static int sctp_getsockopt_scheduler(struct sock *sk, int len,
7615 char __u 7608 char __user *optval,
7616 int __us 7609 int __user *optlen)
7617 { 7610 {
7618 struct sctp_assoc_value params; 7611 struct sctp_assoc_value params;
7619 struct sctp_association *asoc; 7612 struct sctp_association *asoc;
7620 int retval = -EFAULT; 7613 int retval = -EFAULT;
7621 7614
7622 if (len < sizeof(params)) { 7615 if (len < sizeof(params)) {
7623 retval = -EINVAL; 7616 retval = -EINVAL;
7624 goto out; 7617 goto out;
7625 } 7618 }
7626 7619
7627 len = sizeof(params); 7620 len = sizeof(params);
7628 if (copy_from_user(¶ms, optval, l 7621 if (copy_from_user(¶ms, optval, len))
7629 goto out; 7622 goto out;
7630 7623
7631 asoc = sctp_id2assoc(sk, params.assoc 7624 asoc = sctp_id2assoc(sk, params.assoc_id);
7632 if (!asoc && params.assoc_id != SCTP_ 7625 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7633 sctp_style(sk, UDP)) { 7626 sctp_style(sk, UDP)) {
7634 retval = -EINVAL; 7627 retval = -EINVAL;
7635 goto out; 7628 goto out;
7636 } 7629 }
7637 7630
7638 params.assoc_value = asoc ? sctp_sche 7631 params.assoc_value = asoc ? sctp_sched_get_sched(asoc)
7639 : sctp_sk(s 7632 : sctp_sk(sk)->default_ss;
7640 7633
7641 if (put_user(len, optlen)) 7634 if (put_user(len, optlen))
7642 goto out; 7635 goto out;
7643 7636
7644 if (copy_to_user(optval, ¶ms, len 7637 if (copy_to_user(optval, ¶ms, len))
7645 goto out; 7638 goto out;
7646 7639
7647 retval = 0; 7640 retval = 0;
7648 7641
7649 out: 7642 out:
7650 return retval; 7643 return retval;
7651 } 7644 }
7652 7645
7653 static int sctp_getsockopt_scheduler_value(st 7646 static int sctp_getsockopt_scheduler_value(struct sock *sk, int len,
7654 ch 7647 char __user *optval,
7655 in 7648 int __user *optlen)
7656 { 7649 {
7657 struct sctp_stream_value params; 7650 struct sctp_stream_value params;
7658 struct sctp_association *asoc; 7651 struct sctp_association *asoc;
7659 int retval = -EFAULT; 7652 int retval = -EFAULT;
7660 7653
7661 if (len < sizeof(params)) { 7654 if (len < sizeof(params)) {
7662 retval = -EINVAL; 7655 retval = -EINVAL;
7663 goto out; 7656 goto out;
7664 } 7657 }
7665 7658
7666 len = sizeof(params); 7659 len = sizeof(params);
7667 if (copy_from_user(¶ms, optval, l 7660 if (copy_from_user(¶ms, optval, len))
7668 goto out; 7661 goto out;
7669 7662
7670 asoc = sctp_id2assoc(sk, params.assoc 7663 asoc = sctp_id2assoc(sk, params.assoc_id);
7671 if (!asoc) { 7664 if (!asoc) {
7672 retval = -EINVAL; 7665 retval = -EINVAL;
7673 goto out; 7666 goto out;
7674 } 7667 }
7675 7668
7676 retval = sctp_sched_get_value(asoc, p 7669 retval = sctp_sched_get_value(asoc, params.stream_id,
7677 ¶ms 7670 ¶ms.stream_value);
7678 if (retval) 7671 if (retval)
7679 goto out; 7672 goto out;
7680 7673
7681 if (put_user(len, optlen)) { 7674 if (put_user(len, optlen)) {
7682 retval = -EFAULT; 7675 retval = -EFAULT;
7683 goto out; 7676 goto out;
7684 } 7677 }
7685 7678
7686 if (copy_to_user(optval, ¶ms, len 7679 if (copy_to_user(optval, ¶ms, len)) {
7687 retval = -EFAULT; 7680 retval = -EFAULT;
7688 goto out; 7681 goto out;
7689 } 7682 }
7690 7683
7691 out: 7684 out:
7692 return retval; 7685 return retval;
7693 } 7686 }
7694 7687
7695 static int sctp_getsockopt_interleaving_suppo 7688 static int sctp_getsockopt_interleaving_supported(struct sock *sk, int len,
7696 7689 char __user *optval,
7697 7690 int __user *optlen)
7698 { 7691 {
7699 struct sctp_assoc_value params; 7692 struct sctp_assoc_value params;
7700 struct sctp_association *asoc; 7693 struct sctp_association *asoc;
7701 int retval = -EFAULT; 7694 int retval = -EFAULT;
7702 7695
7703 if (len < sizeof(params)) { 7696 if (len < sizeof(params)) {
7704 retval = -EINVAL; 7697 retval = -EINVAL;
7705 goto out; 7698 goto out;
7706 } 7699 }
7707 7700
7708 len = sizeof(params); 7701 len = sizeof(params);
7709 if (copy_from_user(¶ms, optval, l 7702 if (copy_from_user(¶ms, optval, len))
7710 goto out; 7703 goto out;
7711 7704
7712 asoc = sctp_id2assoc(sk, params.assoc 7705 asoc = sctp_id2assoc(sk, params.assoc_id);
7713 if (!asoc && params.assoc_id != SCTP_ 7706 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7714 sctp_style(sk, UDP)) { 7707 sctp_style(sk, UDP)) {
7715 retval = -EINVAL; 7708 retval = -EINVAL;
7716 goto out; 7709 goto out;
7717 } 7710 }
7718 7711
7719 params.assoc_value = asoc ? asoc->pee 7712 params.assoc_value = asoc ? asoc->peer.intl_capable
7720 : sctp_sk(s 7713 : sctp_sk(sk)->ep->intl_enable;
7721 7714
7722 if (put_user(len, optlen)) 7715 if (put_user(len, optlen))
7723 goto out; 7716 goto out;
7724 7717
7725 if (copy_to_user(optval, ¶ms, len 7718 if (copy_to_user(optval, ¶ms, len))
7726 goto out; 7719 goto out;
7727 7720
7728 retval = 0; 7721 retval = 0;
7729 7722
7730 out: 7723 out:
7731 return retval; 7724 return retval;
7732 } 7725 }
7733 7726
7734 static int sctp_getsockopt_reuse_port(struct 7727 static int sctp_getsockopt_reuse_port(struct sock *sk, int len,
7735 char __ 7728 char __user *optval,
7736 int __u 7729 int __user *optlen)
7737 { 7730 {
7738 int val; 7731 int val;
7739 7732
7740 if (len < sizeof(int)) 7733 if (len < sizeof(int))
7741 return -EINVAL; 7734 return -EINVAL;
7742 7735
7743 len = sizeof(int); 7736 len = sizeof(int);
7744 val = sctp_sk(sk)->reuse; 7737 val = sctp_sk(sk)->reuse;
7745 if (put_user(len, optlen)) 7738 if (put_user(len, optlen))
7746 return -EFAULT; 7739 return -EFAULT;
7747 7740
7748 if (copy_to_user(optval, &val, len)) 7741 if (copy_to_user(optval, &val, len))
7749 return -EFAULT; 7742 return -EFAULT;
7750 7743
7751 return 0; 7744 return 0;
7752 } 7745 }
7753 7746
7754 static int sctp_getsockopt_event(struct sock 7747 static int sctp_getsockopt_event(struct sock *sk, int len, char __user *optval,
7755 int __user * 7748 int __user *optlen)
7756 { 7749 {
7757 struct sctp_association *asoc; 7750 struct sctp_association *asoc;
7758 struct sctp_event param; 7751 struct sctp_event param;
7759 __u16 subscribe; 7752 __u16 subscribe;
7760 7753
7761 if (len < sizeof(param)) 7754 if (len < sizeof(param))
7762 return -EINVAL; 7755 return -EINVAL;
7763 7756
7764 len = sizeof(param); 7757 len = sizeof(param);
7765 if (copy_from_user(¶m, optval, le 7758 if (copy_from_user(¶m, optval, len))
7766 return -EFAULT; 7759 return -EFAULT;
7767 7760
7768 if (param.se_type < SCTP_SN_TYPE_BASE 7761 if (param.se_type < SCTP_SN_TYPE_BASE ||
7769 param.se_type > SCTP_SN_TYPE_MAX) 7762 param.se_type > SCTP_SN_TYPE_MAX)
7770 return -EINVAL; 7763 return -EINVAL;
7771 7764
7772 asoc = sctp_id2assoc(sk, param.se_ass 7765 asoc = sctp_id2assoc(sk, param.se_assoc_id);
7773 if (!asoc && param.se_assoc_id != SCT 7766 if (!asoc && param.se_assoc_id != SCTP_FUTURE_ASSOC &&
7774 sctp_style(sk, UDP)) 7767 sctp_style(sk, UDP))
7775 return -EINVAL; 7768 return -EINVAL;
7776 7769
7777 subscribe = asoc ? asoc->subscribe : 7770 subscribe = asoc ? asoc->subscribe : sctp_sk(sk)->subscribe;
7778 param.se_on = sctp_ulpevent_type_enab 7771 param.se_on = sctp_ulpevent_type_enabled(subscribe, param.se_type);
7779 7772
7780 if (put_user(len, optlen)) 7773 if (put_user(len, optlen))
7781 return -EFAULT; 7774 return -EFAULT;
7782 7775
7783 if (copy_to_user(optval, ¶m, len) 7776 if (copy_to_user(optval, ¶m, len))
7784 return -EFAULT; 7777 return -EFAULT;
7785 7778
7786 return 0; 7779 return 0;
7787 } 7780 }
7788 7781
7789 static int sctp_getsockopt_asconf_supported(s 7782 static int sctp_getsockopt_asconf_supported(struct sock *sk, int len,
7790 c 7783 char __user *optval,
7791 i 7784 int __user *optlen)
7792 { 7785 {
7793 struct sctp_assoc_value params; 7786 struct sctp_assoc_value params;
7794 struct sctp_association *asoc; 7787 struct sctp_association *asoc;
7795 int retval = -EFAULT; 7788 int retval = -EFAULT;
7796 7789
7797 if (len < sizeof(params)) { 7790 if (len < sizeof(params)) {
7798 retval = -EINVAL; 7791 retval = -EINVAL;
7799 goto out; 7792 goto out;
7800 } 7793 }
7801 7794
7802 len = sizeof(params); 7795 len = sizeof(params);
7803 if (copy_from_user(¶ms, optval, l 7796 if (copy_from_user(¶ms, optval, len))
7804 goto out; 7797 goto out;
7805 7798
7806 asoc = sctp_id2assoc(sk, params.assoc 7799 asoc = sctp_id2assoc(sk, params.assoc_id);
7807 if (!asoc && params.assoc_id != SCTP_ 7800 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7808 sctp_style(sk, UDP)) { 7801 sctp_style(sk, UDP)) {
7809 retval = -EINVAL; 7802 retval = -EINVAL;
7810 goto out; 7803 goto out;
7811 } 7804 }
7812 7805
7813 params.assoc_value = asoc ? asoc->pee 7806 params.assoc_value = asoc ? asoc->peer.asconf_capable
7814 : sctp_sk(s 7807 : sctp_sk(sk)->ep->asconf_enable;
7815 7808
7816 if (put_user(len, optlen)) 7809 if (put_user(len, optlen))
7817 goto out; 7810 goto out;
7818 7811
7819 if (copy_to_user(optval, ¶ms, len 7812 if (copy_to_user(optval, ¶ms, len))
7820 goto out; 7813 goto out;
7821 7814
7822 retval = 0; 7815 retval = 0;
7823 7816
7824 out: 7817 out:
7825 return retval; 7818 return retval;
7826 } 7819 }
7827 7820
7828 static int sctp_getsockopt_auth_supported(str 7821 static int sctp_getsockopt_auth_supported(struct sock *sk, int len,
7829 cha 7822 char __user *optval,
7830 int 7823 int __user *optlen)
7831 { 7824 {
7832 struct sctp_assoc_value params; 7825 struct sctp_assoc_value params;
7833 struct sctp_association *asoc; 7826 struct sctp_association *asoc;
7834 int retval = -EFAULT; 7827 int retval = -EFAULT;
7835 7828
7836 if (len < sizeof(params)) { 7829 if (len < sizeof(params)) {
7837 retval = -EINVAL; 7830 retval = -EINVAL;
7838 goto out; 7831 goto out;
7839 } 7832 }
7840 7833
7841 len = sizeof(params); 7834 len = sizeof(params);
7842 if (copy_from_user(¶ms, optval, l 7835 if (copy_from_user(¶ms, optval, len))
7843 goto out; 7836 goto out;
7844 7837
7845 asoc = sctp_id2assoc(sk, params.assoc 7838 asoc = sctp_id2assoc(sk, params.assoc_id);
7846 if (!asoc && params.assoc_id != SCTP_ 7839 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7847 sctp_style(sk, UDP)) { 7840 sctp_style(sk, UDP)) {
7848 retval = -EINVAL; 7841 retval = -EINVAL;
7849 goto out; 7842 goto out;
7850 } 7843 }
7851 7844
7852 params.assoc_value = asoc ? asoc->pee 7845 params.assoc_value = asoc ? asoc->peer.auth_capable
7853 : sctp_sk(s 7846 : sctp_sk(sk)->ep->auth_enable;
7854 7847
7855 if (put_user(len, optlen)) 7848 if (put_user(len, optlen))
7856 goto out; 7849 goto out;
7857 7850
7858 if (copy_to_user(optval, ¶ms, len 7851 if (copy_to_user(optval, ¶ms, len))
7859 goto out; 7852 goto out;
7860 7853
7861 retval = 0; 7854 retval = 0;
7862 7855
7863 out: 7856 out:
7864 return retval; 7857 return retval;
7865 } 7858 }
7866 7859
7867 static int sctp_getsockopt_ecn_supported(stru 7860 static int sctp_getsockopt_ecn_supported(struct sock *sk, int len,
7868 char 7861 char __user *optval,
7869 int 7862 int __user *optlen)
7870 { 7863 {
7871 struct sctp_assoc_value params; 7864 struct sctp_assoc_value params;
7872 struct sctp_association *asoc; 7865 struct sctp_association *asoc;
7873 int retval = -EFAULT; 7866 int retval = -EFAULT;
7874 7867
7875 if (len < sizeof(params)) { 7868 if (len < sizeof(params)) {
7876 retval = -EINVAL; 7869 retval = -EINVAL;
7877 goto out; 7870 goto out;
7878 } 7871 }
7879 7872
7880 len = sizeof(params); 7873 len = sizeof(params);
7881 if (copy_from_user(¶ms, optval, l 7874 if (copy_from_user(¶ms, optval, len))
7882 goto out; 7875 goto out;
7883 7876
7884 asoc = sctp_id2assoc(sk, params.assoc 7877 asoc = sctp_id2assoc(sk, params.assoc_id);
7885 if (!asoc && params.assoc_id != SCTP_ 7878 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7886 sctp_style(sk, UDP)) { 7879 sctp_style(sk, UDP)) {
7887 retval = -EINVAL; 7880 retval = -EINVAL;
7888 goto out; 7881 goto out;
7889 } 7882 }
7890 7883
7891 params.assoc_value = asoc ? asoc->pee 7884 params.assoc_value = asoc ? asoc->peer.ecn_capable
7892 : sctp_sk(s 7885 : sctp_sk(sk)->ep->ecn_enable;
7893 7886
7894 if (put_user(len, optlen)) 7887 if (put_user(len, optlen))
7895 goto out; 7888 goto out;
7896 7889
7897 if (copy_to_user(optval, ¶ms, len 7890 if (copy_to_user(optval, ¶ms, len))
7898 goto out; 7891 goto out;
7899 7892
7900 retval = 0; 7893 retval = 0;
7901 7894
7902 out: 7895 out:
7903 return retval; 7896 return retval;
7904 } 7897 }
7905 7898
7906 static int sctp_getsockopt_pf_expose(struct s 7899 static int sctp_getsockopt_pf_expose(struct sock *sk, int len,
7907 char __u 7900 char __user *optval,
7908 int __us 7901 int __user *optlen)
7909 { 7902 {
7910 struct sctp_assoc_value params; 7903 struct sctp_assoc_value params;
7911 struct sctp_association *asoc; 7904 struct sctp_association *asoc;
7912 int retval = -EFAULT; 7905 int retval = -EFAULT;
7913 7906
7914 if (len < sizeof(params)) { 7907 if (len < sizeof(params)) {
7915 retval = -EINVAL; 7908 retval = -EINVAL;
7916 goto out; 7909 goto out;
7917 } 7910 }
7918 7911
7919 len = sizeof(params); 7912 len = sizeof(params);
7920 if (copy_from_user(¶ms, optval, l 7913 if (copy_from_user(¶ms, optval, len))
7921 goto out; 7914 goto out;
7922 7915
7923 asoc = sctp_id2assoc(sk, params.assoc 7916 asoc = sctp_id2assoc(sk, params.assoc_id);
7924 if (!asoc && params.assoc_id != SCTP_ 7917 if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
7925 sctp_style(sk, UDP)) { 7918 sctp_style(sk, UDP)) {
7926 retval = -EINVAL; 7919 retval = -EINVAL;
7927 goto out; 7920 goto out;
7928 } 7921 }
7929 7922
7930 params.assoc_value = asoc ? asoc->pf_ 7923 params.assoc_value = asoc ? asoc->pf_expose
7931 : sctp_sk(s 7924 : sctp_sk(sk)->pf_expose;
7932 7925
7933 if (put_user(len, optlen)) 7926 if (put_user(len, optlen))
7934 goto out; 7927 goto out;
7935 7928
7936 if (copy_to_user(optval, ¶ms, len 7929 if (copy_to_user(optval, ¶ms, len))
7937 goto out; 7930 goto out;
7938 7931
7939 retval = 0; 7932 retval = 0;
7940 7933
7941 out: 7934 out:
7942 return retval; 7935 return retval;
7943 } 7936 }
7944 7937
7945 static int sctp_getsockopt_encap_port(struct 7938 static int sctp_getsockopt_encap_port(struct sock *sk, int len,
7946 char __ 7939 char __user *optval, int __user *optlen)
7947 { 7940 {
7948 struct sctp_association *asoc; 7941 struct sctp_association *asoc;
7949 struct sctp_udpencaps encap; 7942 struct sctp_udpencaps encap;
7950 struct sctp_transport *t; 7943 struct sctp_transport *t;
7951 __be16 encap_port; 7944 __be16 encap_port;
7952 7945
7953 if (len < sizeof(encap)) 7946 if (len < sizeof(encap))
7954 return -EINVAL; 7947 return -EINVAL;
7955 7948
7956 len = sizeof(encap); 7949 len = sizeof(encap);
7957 if (copy_from_user(&encap, optval, le 7950 if (copy_from_user(&encap, optval, len))
7958 return -EFAULT; 7951 return -EFAULT;
7959 7952
7960 /* If an address other than INADDR_AN 7953 /* If an address other than INADDR_ANY is specified, and
7961 * no transport is found, then the re 7954 * no transport is found, then the request is invalid.
7962 */ 7955 */
7963 if (!sctp_is_any(sk, (union sctp_addr 7956 if (!sctp_is_any(sk, (union sctp_addr *)&encap.sue_address)) {
7964 t = sctp_addr_id2transport(sk 7957 t = sctp_addr_id2transport(sk, &encap.sue_address,
7965 en 7958 encap.sue_assoc_id);
7966 if (!t) { 7959 if (!t) {
7967 pr_debug("%s: failed 7960 pr_debug("%s: failed no transport\n", __func__);
7968 return -EINVAL; 7961 return -EINVAL;
7969 } 7962 }
7970 7963
7971 encap_port = t->encap_port; 7964 encap_port = t->encap_port;
7972 goto out; 7965 goto out;
7973 } 7966 }
7974 7967
7975 /* Get association, if assoc_id != SC 7968 /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the
7976 * socket is a one to many style sock 7969 * socket is a one to many style socket, and an association
7977 * was not found, then the id was inv 7970 * was not found, then the id was invalid.
7978 */ 7971 */
7979 asoc = sctp_id2assoc(sk, encap.sue_as 7972 asoc = sctp_id2assoc(sk, encap.sue_assoc_id);
7980 if (!asoc && encap.sue_assoc_id != SC 7973 if (!asoc && encap.sue_assoc_id != SCTP_FUTURE_ASSOC &&
7981 sctp_style(sk, UDP)) { 7974 sctp_style(sk, UDP)) {
7982 pr_debug("%s: failed no assoc 7975 pr_debug("%s: failed no association\n", __func__);
7983 return -EINVAL; 7976 return -EINVAL;
7984 } 7977 }
7985 7978
7986 if (asoc) { 7979 if (asoc) {
7987 encap_port = asoc->encap_port 7980 encap_port = asoc->encap_port;
7988 goto out; 7981 goto out;
7989 } 7982 }
7990 7983
7991 encap_port = sctp_sk(sk)->encap_port; 7984 encap_port = sctp_sk(sk)->encap_port;
7992 7985
7993 out: 7986 out:
7994 encap.sue_port = (__force uint16_t)en 7987 encap.sue_port = (__force uint16_t)encap_port;
7995 if (copy_to_user(optval, &encap, len) 7988 if (copy_to_user(optval, &encap, len))
7996 return -EFAULT; 7989 return -EFAULT;
7997 7990
7998 if (put_user(len, optlen)) 7991 if (put_user(len, optlen))
7999 return -EFAULT; 7992 return -EFAULT;
8000 7993
8001 return 0; 7994 return 0;
8002 } 7995 }
8003 7996
8004 static int sctp_getsockopt_probe_interval(str 7997 static int sctp_getsockopt_probe_interval(struct sock *sk, int len,
8005 cha 7998 char __user *optval,
8006 int 7999 int __user *optlen)
8007 { 8000 {
8008 struct sctp_probeinterval params; 8001 struct sctp_probeinterval params;
8009 struct sctp_association *asoc; 8002 struct sctp_association *asoc;
8010 struct sctp_transport *t; 8003 struct sctp_transport *t;
8011 __u32 probe_interval; 8004 __u32 probe_interval;
8012 8005
8013 if (len < sizeof(params)) 8006 if (len < sizeof(params))
8014 return -EINVAL; 8007 return -EINVAL;
8015 8008
8016 len = sizeof(params); 8009 len = sizeof(params);
8017 if (copy_from_user(¶ms, optval, l 8010 if (copy_from_user(¶ms, optval, len))
8018 return -EFAULT; 8011 return -EFAULT;
8019 8012
8020 /* If an address other than INADDR_AN 8013 /* If an address other than INADDR_ANY is specified, and
8021 * no transport is found, then the re 8014 * no transport is found, then the request is invalid.
8022 */ 8015 */
8023 if (!sctp_is_any(sk, (union sctp_addr 8016 if (!sctp_is_any(sk, (union sctp_addr *)¶ms.spi_address)) {
8024 t = sctp_addr_id2transport(sk 8017 t = sctp_addr_id2transport(sk, ¶ms.spi_address,
8025 pa 8018 params.spi_assoc_id);
8026 if (!t) { 8019 if (!t) {
8027 pr_debug("%s: failed 8020 pr_debug("%s: failed no transport\n", __func__);
8028 return -EINVAL; 8021 return -EINVAL;
8029 } 8022 }
8030 8023
8031 probe_interval = jiffies_to_m 8024 probe_interval = jiffies_to_msecs(t->probe_interval);
8032 goto out; 8025 goto out;
8033 } 8026 }
8034 8027
8035 /* Get association, if assoc_id != SC 8028 /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the
8036 * socket is a one to many style sock 8029 * socket is a one to many style socket, and an association
8037 * was not found, then the id was inv 8030 * was not found, then the id was invalid.
8038 */ 8031 */
8039 asoc = sctp_id2assoc(sk, params.spi_a 8032 asoc = sctp_id2assoc(sk, params.spi_assoc_id);
8040 if (!asoc && params.spi_assoc_id != S 8033 if (!asoc && params.spi_assoc_id != SCTP_FUTURE_ASSOC &&
8041 sctp_style(sk, UDP)) { 8034 sctp_style(sk, UDP)) {
8042 pr_debug("%s: failed no assoc 8035 pr_debug("%s: failed no association\n", __func__);
8043 return -EINVAL; 8036 return -EINVAL;
8044 } 8037 }
8045 8038
8046 if (asoc) { 8039 if (asoc) {
8047 probe_interval = jiffies_to_m 8040 probe_interval = jiffies_to_msecs(asoc->probe_interval);
8048 goto out; 8041 goto out;
8049 } 8042 }
8050 8043
8051 probe_interval = sctp_sk(sk)->probe_i 8044 probe_interval = sctp_sk(sk)->probe_interval;
8052 8045
8053 out: 8046 out:
8054 params.spi_interval = probe_interval; 8047 params.spi_interval = probe_interval;
8055 if (copy_to_user(optval, ¶ms, len 8048 if (copy_to_user(optval, ¶ms, len))
8056 return -EFAULT; 8049 return -EFAULT;
8057 8050
8058 if (put_user(len, optlen)) 8051 if (put_user(len, optlen))
8059 return -EFAULT; 8052 return -EFAULT;
8060 8053
8061 return 0; 8054 return 0;
8062 } 8055 }
8063 8056
8064 static int sctp_getsockopt(struct sock *sk, i 8057 static int sctp_getsockopt(struct sock *sk, int level, int optname,
8065 char __user *optva 8058 char __user *optval, int __user *optlen)
8066 { 8059 {
8067 int retval = 0; 8060 int retval = 0;
8068 int len; 8061 int len;
8069 8062
8070 pr_debug("%s: sk:%p, optname:%d\n", _ 8063 pr_debug("%s: sk:%p, optname:%d\n", __func__, sk, optname);
8071 8064
8072 /* I can hardly begin to describe how 8065 /* I can hardly begin to describe how wrong this is. This is
8073 * so broken as to be worse than usel 8066 * so broken as to be worse than useless. The API draft
8074 * REALLY is NOT helpful here... I a 8067 * REALLY is NOT helpful here... I am not convinced that the
8075 * semantics of getsockopt() with a l 8068 * semantics of getsockopt() with a level OTHER THAN SOL_SCTP
8076 * are at all well-founded. 8069 * are at all well-founded.
8077 */ 8070 */
8078 if (level != SOL_SCTP) { 8071 if (level != SOL_SCTP) {
8079 struct sctp_af *af = sctp_sk( 8072 struct sctp_af *af = sctp_sk(sk)->pf->af;
8080 8073
8081 retval = af->getsockopt(sk, l 8074 retval = af->getsockopt(sk, level, optname, optval, optlen);
8082 return retval; 8075 return retval;
8083 } 8076 }
8084 8077
8085 if (get_user(len, optlen)) 8078 if (get_user(len, optlen))
8086 return -EFAULT; 8079 return -EFAULT;
8087 8080
8088 if (len < 0) 8081 if (len < 0)
8089 return -EINVAL; 8082 return -EINVAL;
8090 8083
8091 lock_sock(sk); 8084 lock_sock(sk);
8092 8085
8093 switch (optname) { 8086 switch (optname) {
8094 case SCTP_STATUS: 8087 case SCTP_STATUS:
8095 retval = sctp_getsockopt_sctp 8088 retval = sctp_getsockopt_sctp_status(sk, len, optval, optlen);
8096 break; 8089 break;
8097 case SCTP_DISABLE_FRAGMENTS: 8090 case SCTP_DISABLE_FRAGMENTS:
8098 retval = sctp_getsockopt_disa 8091 retval = sctp_getsockopt_disable_fragments(sk, len, optval,
8099 8092 optlen);
8100 break; 8093 break;
8101 case SCTP_EVENTS: 8094 case SCTP_EVENTS:
8102 retval = sctp_getsockopt_even 8095 retval = sctp_getsockopt_events(sk, len, optval, optlen);
8103 break; 8096 break;
8104 case SCTP_AUTOCLOSE: 8097 case SCTP_AUTOCLOSE:
8105 retval = sctp_getsockopt_auto 8098 retval = sctp_getsockopt_autoclose(sk, len, optval, optlen);
8106 break; 8099 break;
8107 case SCTP_SOCKOPT_PEELOFF: 8100 case SCTP_SOCKOPT_PEELOFF:
8108 retval = sctp_getsockopt_peel 8101 retval = sctp_getsockopt_peeloff(sk, len, optval, optlen);
8109 break; 8102 break;
8110 case SCTP_SOCKOPT_PEELOFF_FLAGS: 8103 case SCTP_SOCKOPT_PEELOFF_FLAGS:
8111 retval = sctp_getsockopt_peel 8104 retval = sctp_getsockopt_peeloff_flags(sk, len, optval, optlen);
8112 break; 8105 break;
8113 case SCTP_PEER_ADDR_PARAMS: 8106 case SCTP_PEER_ADDR_PARAMS:
8114 retval = sctp_getsockopt_peer 8107 retval = sctp_getsockopt_peer_addr_params(sk, len, optval,
8115 8108 optlen);
8116 break; 8109 break;
8117 case SCTP_DELAYED_SACK: 8110 case SCTP_DELAYED_SACK:
8118 retval = sctp_getsockopt_dela 8111 retval = sctp_getsockopt_delayed_ack(sk, len, optval,
8119 8112 optlen);
8120 break; 8113 break;
8121 case SCTP_INITMSG: 8114 case SCTP_INITMSG:
8122 retval = sctp_getsockopt_init 8115 retval = sctp_getsockopt_initmsg(sk, len, optval, optlen);
8123 break; 8116 break;
8124 case SCTP_GET_PEER_ADDRS: 8117 case SCTP_GET_PEER_ADDRS:
8125 retval = sctp_getsockopt_peer 8118 retval = sctp_getsockopt_peer_addrs(sk, len, optval,
8126 8119 optlen);
8127 break; 8120 break;
8128 case SCTP_GET_LOCAL_ADDRS: 8121 case SCTP_GET_LOCAL_ADDRS:
8129 retval = sctp_getsockopt_loca 8122 retval = sctp_getsockopt_local_addrs(sk, len, optval,
8130 8123 optlen);
8131 break; 8124 break;
8132 case SCTP_SOCKOPT_CONNECTX3: 8125 case SCTP_SOCKOPT_CONNECTX3:
8133 retval = sctp_getsockopt_conn 8126 retval = sctp_getsockopt_connectx3(sk, len, optval, optlen);
8134 break; 8127 break;
8135 case SCTP_DEFAULT_SEND_PARAM: 8128 case SCTP_DEFAULT_SEND_PARAM:
8136 retval = sctp_getsockopt_defa 8129 retval = sctp_getsockopt_default_send_param(sk, len,
8137 8130 optval, optlen);
8138 break; 8131 break;
8139 case SCTP_DEFAULT_SNDINFO: 8132 case SCTP_DEFAULT_SNDINFO:
8140 retval = sctp_getsockopt_defa 8133 retval = sctp_getsockopt_default_sndinfo(sk, len,
8141 8134 optval, optlen);
8142 break; 8135 break;
8143 case SCTP_PRIMARY_ADDR: 8136 case SCTP_PRIMARY_ADDR:
8144 retval = sctp_getsockopt_prim 8137 retval = sctp_getsockopt_primary_addr(sk, len, optval, optlen);
8145 break; 8138 break;
8146 case SCTP_NODELAY: 8139 case SCTP_NODELAY:
8147 retval = sctp_getsockopt_node 8140 retval = sctp_getsockopt_nodelay(sk, len, optval, optlen);
8148 break; 8141 break;
8149 case SCTP_RTOINFO: 8142 case SCTP_RTOINFO:
8150 retval = sctp_getsockopt_rtoi 8143 retval = sctp_getsockopt_rtoinfo(sk, len, optval, optlen);
8151 break; 8144 break;
8152 case SCTP_ASSOCINFO: 8145 case SCTP_ASSOCINFO:
8153 retval = sctp_getsockopt_asso 8146 retval = sctp_getsockopt_associnfo(sk, len, optval, optlen);
8154 break; 8147 break;
8155 case SCTP_I_WANT_MAPPED_V4_ADDR: 8148 case SCTP_I_WANT_MAPPED_V4_ADDR:
8156 retval = sctp_getsockopt_mapp 8149 retval = sctp_getsockopt_mappedv4(sk, len, optval, optlen);
8157 break; 8150 break;
8158 case SCTP_MAXSEG: 8151 case SCTP_MAXSEG:
8159 retval = sctp_getsockopt_maxs 8152 retval = sctp_getsockopt_maxseg(sk, len, optval, optlen);
8160 break; 8153 break;
8161 case SCTP_GET_PEER_ADDR_INFO: 8154 case SCTP_GET_PEER_ADDR_INFO:
8162 retval = sctp_getsockopt_peer 8155 retval = sctp_getsockopt_peer_addr_info(sk, len, optval,
8163 8156 optlen);
8164 break; 8157 break;
8165 case SCTP_ADAPTATION_LAYER: 8158 case SCTP_ADAPTATION_LAYER:
8166 retval = sctp_getsockopt_adap 8159 retval = sctp_getsockopt_adaptation_layer(sk, len, optval,
8167 8160 optlen);
8168 break; 8161 break;
8169 case SCTP_CONTEXT: 8162 case SCTP_CONTEXT:
8170 retval = sctp_getsockopt_cont 8163 retval = sctp_getsockopt_context(sk, len, optval, optlen);
8171 break; 8164 break;
8172 case SCTP_FRAGMENT_INTERLEAVE: 8165 case SCTP_FRAGMENT_INTERLEAVE:
8173 retval = sctp_getsockopt_frag 8166 retval = sctp_getsockopt_fragment_interleave(sk, len, optval,
8174 8167 optlen);
8175 break; 8168 break;
8176 case SCTP_PARTIAL_DELIVERY_POINT: 8169 case SCTP_PARTIAL_DELIVERY_POINT:
8177 retval = sctp_getsockopt_part 8170 retval = sctp_getsockopt_partial_delivery_point(sk, len, optval,
8178 8171 optlen);
8179 break; 8172 break;
8180 case SCTP_MAX_BURST: 8173 case SCTP_MAX_BURST:
8181 retval = sctp_getsockopt_maxb 8174 retval = sctp_getsockopt_maxburst(sk, len, optval, optlen);
8182 break; 8175 break;
8183 case SCTP_AUTH_KEY: 8176 case SCTP_AUTH_KEY:
8184 case SCTP_AUTH_CHUNK: 8177 case SCTP_AUTH_CHUNK:
8185 case SCTP_AUTH_DELETE_KEY: 8178 case SCTP_AUTH_DELETE_KEY:
8186 case SCTP_AUTH_DEACTIVATE_KEY: 8179 case SCTP_AUTH_DEACTIVATE_KEY:
8187 retval = -EOPNOTSUPP; 8180 retval = -EOPNOTSUPP;
8188 break; 8181 break;
8189 case SCTP_HMAC_IDENT: 8182 case SCTP_HMAC_IDENT:
8190 retval = sctp_getsockopt_hmac 8183 retval = sctp_getsockopt_hmac_ident(sk, len, optval, optlen);
8191 break; 8184 break;
8192 case SCTP_AUTH_ACTIVE_KEY: 8185 case SCTP_AUTH_ACTIVE_KEY:
8193 retval = sctp_getsockopt_acti 8186 retval = sctp_getsockopt_active_key(sk, len, optval, optlen);
8194 break; 8187 break;
8195 case SCTP_PEER_AUTH_CHUNKS: 8188 case SCTP_PEER_AUTH_CHUNKS:
8196 retval = sctp_getsockopt_peer 8189 retval = sctp_getsockopt_peer_auth_chunks(sk, len, optval,
8197 8190 optlen);
8198 break; 8191 break;
8199 case SCTP_LOCAL_AUTH_CHUNKS: 8192 case SCTP_LOCAL_AUTH_CHUNKS:
8200 retval = sctp_getsockopt_loca 8193 retval = sctp_getsockopt_local_auth_chunks(sk, len, optval,
8201 8194 optlen);
8202 break; 8195 break;
8203 case SCTP_GET_ASSOC_NUMBER: 8196 case SCTP_GET_ASSOC_NUMBER:
8204 retval = sctp_getsockopt_asso 8197 retval = sctp_getsockopt_assoc_number(sk, len, optval, optlen);
8205 break; 8198 break;
8206 case SCTP_GET_ASSOC_ID_LIST: 8199 case SCTP_GET_ASSOC_ID_LIST:
8207 retval = sctp_getsockopt_asso 8200 retval = sctp_getsockopt_assoc_ids(sk, len, optval, optlen);
8208 break; 8201 break;
8209 case SCTP_AUTO_ASCONF: 8202 case SCTP_AUTO_ASCONF:
8210 retval = sctp_getsockopt_auto 8203 retval = sctp_getsockopt_auto_asconf(sk, len, optval, optlen);
8211 break; 8204 break;
8212 case SCTP_PEER_ADDR_THLDS: 8205 case SCTP_PEER_ADDR_THLDS:
8213 retval = sctp_getsockopt_padd 8206 retval = sctp_getsockopt_paddr_thresholds(sk, optval, len,
8214 8207 optlen, false);
8215 break; 8208 break;
8216 case SCTP_PEER_ADDR_THLDS_V2: 8209 case SCTP_PEER_ADDR_THLDS_V2:
8217 retval = sctp_getsockopt_padd 8210 retval = sctp_getsockopt_paddr_thresholds(sk, optval, len,
8218 8211 optlen, true);
8219 break; 8212 break;
8220 case SCTP_GET_ASSOC_STATS: 8213 case SCTP_GET_ASSOC_STATS:
8221 retval = sctp_getsockopt_asso 8214 retval = sctp_getsockopt_assoc_stats(sk, len, optval, optlen);
8222 break; 8215 break;
8223 case SCTP_RECVRCVINFO: 8216 case SCTP_RECVRCVINFO:
8224 retval = sctp_getsockopt_recv 8217 retval = sctp_getsockopt_recvrcvinfo(sk, len, optval, optlen);
8225 break; 8218 break;
8226 case SCTP_RECVNXTINFO: 8219 case SCTP_RECVNXTINFO:
8227 retval = sctp_getsockopt_recv 8220 retval = sctp_getsockopt_recvnxtinfo(sk, len, optval, optlen);
8228 break; 8221 break;
8229 case SCTP_PR_SUPPORTED: 8222 case SCTP_PR_SUPPORTED:
8230 retval = sctp_getsockopt_pr_s 8223 retval = sctp_getsockopt_pr_supported(sk, len, optval, optlen);
8231 break; 8224 break;
8232 case SCTP_DEFAULT_PRINFO: 8225 case SCTP_DEFAULT_PRINFO:
8233 retval = sctp_getsockopt_defa 8226 retval = sctp_getsockopt_default_prinfo(sk, len, optval,
8234 8227 optlen);
8235 break; 8228 break;
8236 case SCTP_PR_ASSOC_STATUS: 8229 case SCTP_PR_ASSOC_STATUS:
8237 retval = sctp_getsockopt_pr_a 8230 retval = sctp_getsockopt_pr_assocstatus(sk, len, optval,
8238 8231 optlen);
8239 break; 8232 break;
8240 case SCTP_PR_STREAM_STATUS: 8233 case SCTP_PR_STREAM_STATUS:
8241 retval = sctp_getsockopt_pr_s 8234 retval = sctp_getsockopt_pr_streamstatus(sk, len, optval,
8242 8235 optlen);
8243 break; 8236 break;
8244 case SCTP_RECONFIG_SUPPORTED: 8237 case SCTP_RECONFIG_SUPPORTED:
8245 retval = sctp_getsockopt_reco 8238 retval = sctp_getsockopt_reconfig_supported(sk, len, optval,
8246 8239 optlen);
8247 break; 8240 break;
8248 case SCTP_ENABLE_STREAM_RESET: 8241 case SCTP_ENABLE_STREAM_RESET:
8249 retval = sctp_getsockopt_enab 8242 retval = sctp_getsockopt_enable_strreset(sk, len, optval,
8250 8243 optlen);
8251 break; 8244 break;
8252 case SCTP_STREAM_SCHEDULER: 8245 case SCTP_STREAM_SCHEDULER:
8253 retval = sctp_getsockopt_sche 8246 retval = sctp_getsockopt_scheduler(sk, len, optval,
8254 8247 optlen);
8255 break; 8248 break;
8256 case SCTP_STREAM_SCHEDULER_VALUE: 8249 case SCTP_STREAM_SCHEDULER_VALUE:
8257 retval = sctp_getsockopt_sche 8250 retval = sctp_getsockopt_scheduler_value(sk, len, optval,
8258 8251 optlen);
8259 break; 8252 break;
8260 case SCTP_INTERLEAVING_SUPPORTED: 8253 case SCTP_INTERLEAVING_SUPPORTED:
8261 retval = sctp_getsockopt_inte 8254 retval = sctp_getsockopt_interleaving_supported(sk, len, optval,
8262 8255 optlen);
8263 break; 8256 break;
8264 case SCTP_REUSE_PORT: 8257 case SCTP_REUSE_PORT:
8265 retval = sctp_getsockopt_reus 8258 retval = sctp_getsockopt_reuse_port(sk, len, optval, optlen);
8266 break; 8259 break;
8267 case SCTP_EVENT: 8260 case SCTP_EVENT:
8268 retval = sctp_getsockopt_even 8261 retval = sctp_getsockopt_event(sk, len, optval, optlen);
8269 break; 8262 break;
8270 case SCTP_ASCONF_SUPPORTED: 8263 case SCTP_ASCONF_SUPPORTED:
8271 retval = sctp_getsockopt_asco 8264 retval = sctp_getsockopt_asconf_supported(sk, len, optval,
8272 8265 optlen);
8273 break; 8266 break;
8274 case SCTP_AUTH_SUPPORTED: 8267 case SCTP_AUTH_SUPPORTED:
8275 retval = sctp_getsockopt_auth 8268 retval = sctp_getsockopt_auth_supported(sk, len, optval,
8276 8269 optlen);
8277 break; 8270 break;
8278 case SCTP_ECN_SUPPORTED: 8271 case SCTP_ECN_SUPPORTED:
8279 retval = sctp_getsockopt_ecn_ 8272 retval = sctp_getsockopt_ecn_supported(sk, len, optval, optlen);
8280 break; 8273 break;
8281 case SCTP_EXPOSE_POTENTIALLY_FAILED_S 8274 case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE:
8282 retval = sctp_getsockopt_pf_e 8275 retval = sctp_getsockopt_pf_expose(sk, len, optval, optlen);
8283 break; 8276 break;
8284 case SCTP_REMOTE_UDP_ENCAPS_PORT: 8277 case SCTP_REMOTE_UDP_ENCAPS_PORT:
8285 retval = sctp_getsockopt_enca 8278 retval = sctp_getsockopt_encap_port(sk, len, optval, optlen);
8286 break; 8279 break;
8287 case SCTP_PLPMTUD_PROBE_INTERVAL: 8280 case SCTP_PLPMTUD_PROBE_INTERVAL:
8288 retval = sctp_getsockopt_prob 8281 retval = sctp_getsockopt_probe_interval(sk, len, optval, optlen);
8289 break; 8282 break;
8290 default: 8283 default:
8291 retval = -ENOPROTOOPT; 8284 retval = -ENOPROTOOPT;
8292 break; 8285 break;
8293 } 8286 }
8294 8287
8295 release_sock(sk); 8288 release_sock(sk);
8296 return retval; 8289 return retval;
8297 } 8290 }
8298 8291
8299 static bool sctp_bpf_bypass_getsockopt(int le 8292 static bool sctp_bpf_bypass_getsockopt(int level, int optname)
8300 { 8293 {
8301 if (level == SOL_SCTP) { 8294 if (level == SOL_SCTP) {
8302 switch (optname) { 8295 switch (optname) {
8303 case SCTP_SOCKOPT_PEELOFF: 8296 case SCTP_SOCKOPT_PEELOFF:
8304 case SCTP_SOCKOPT_PEELOFF_FLA 8297 case SCTP_SOCKOPT_PEELOFF_FLAGS:
8305 case SCTP_SOCKOPT_CONNECTX3: 8298 case SCTP_SOCKOPT_CONNECTX3:
8306 return true; 8299 return true;
8307 default: 8300 default:
8308 return false; 8301 return false;
8309 } 8302 }
8310 } 8303 }
8311 8304
8312 return false; 8305 return false;
8313 } 8306 }
8314 8307
8315 static int sctp_hash(struct sock *sk) 8308 static int sctp_hash(struct sock *sk)
8316 { 8309 {
8317 /* STUB */ 8310 /* STUB */
8318 return 0; 8311 return 0;
8319 } 8312 }
8320 8313
8321 static void sctp_unhash(struct sock *sk) 8314 static void sctp_unhash(struct sock *sk)
8322 { 8315 {
8323 /* STUB */ 8316 /* STUB */
8324 } 8317 }
8325 8318
8326 /* Check if port is acceptable. Possibly fin 8319 /* Check if port is acceptable. Possibly find first available port.
8327 * 8320 *
8328 * The port hash table (contained in the 'glo 8321 * The port hash table (contained in the 'global' SCTP protocol storage
8329 * returned by struct sctp_protocol *sctp_get 8322 * returned by struct sctp_protocol *sctp_get_protocol()). The hash
8330 * table is an array of 4096 lists (sctp_bind 8323 * table is an array of 4096 lists (sctp_bind_hashbucket). Each
8331 * list (the list number is the port number h 8324 * list (the list number is the port number hashed out, so as you
8332 * would expect from a hash function, all the 8325 * would expect from a hash function, all the ports in a given list have
8333 * such a number that hashes out to the same 8326 * such a number that hashes out to the same list number; you were
8334 * expecting that, right?); so each list has 8327 * expecting that, right?); so each list has a set of ports, with a
8335 * link to the socket (struct sock) that uses 8328 * link to the socket (struct sock) that uses it, the port number and
8336 * a fastreuse flag (FIXME: NPI ipg). 8329 * a fastreuse flag (FIXME: NPI ipg).
8337 */ 8330 */
8338 static struct sctp_bind_bucket *sctp_bucket_c 8331 static struct sctp_bind_bucket *sctp_bucket_create(
8339 struct sctp_bind_hashbucket *head, st 8332 struct sctp_bind_hashbucket *head, struct net *, unsigned short snum);
8340 8333
8341 static int sctp_get_port_local(struct sock *s 8334 static int sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
8342 { 8335 {
8343 struct sctp_sock *sp = sctp_sk(sk); 8336 struct sctp_sock *sp = sctp_sk(sk);
8344 bool reuse = (sk->sk_reuse || sp->reu 8337 bool reuse = (sk->sk_reuse || sp->reuse);
8345 struct sctp_bind_hashbucket *head; /* 8338 struct sctp_bind_hashbucket *head; /* hash list */
8346 struct net *net = sock_net(sk); 8339 struct net *net = sock_net(sk);
8347 kuid_t uid = sock_i_uid(sk); 8340 kuid_t uid = sock_i_uid(sk);
8348 struct sctp_bind_bucket *pp; 8341 struct sctp_bind_bucket *pp;
8349 unsigned short snum; 8342 unsigned short snum;
8350 int ret; 8343 int ret;
8351 8344
8352 snum = ntohs(addr->v4.sin_port); 8345 snum = ntohs(addr->v4.sin_port);
8353 8346
8354 pr_debug("%s: begins, snum:%d\n", __f 8347 pr_debug("%s: begins, snum:%d\n", __func__, snum);
8355 8348
8356 if (snum == 0) { 8349 if (snum == 0) {
8357 /* Search for an available po 8350 /* Search for an available port. */
8358 int low, high, remaining, ind 8351 int low, high, remaining, index;
8359 unsigned int rover; 8352 unsigned int rover;
8360 8353
8361 inet_sk_get_local_port_range( 8354 inet_sk_get_local_port_range(sk, &low, &high);
8362 remaining = (high - low) + 1; 8355 remaining = (high - low) + 1;
8363 rover = get_random_u32_below( 8356 rover = get_random_u32_below(remaining) + low;
8364 8357
8365 do { 8358 do {
8366 rover++; 8359 rover++;
8367 if ((rover < low) || 8360 if ((rover < low) || (rover > high))
8368 rover = low; 8361 rover = low;
8369 if (inet_is_local_res 8362 if (inet_is_local_reserved_port(net, rover))
8370 continue; 8363 continue;
8371 index = sctp_phashfn( 8364 index = sctp_phashfn(net, rover);
8372 head = &sctp_port_has 8365 head = &sctp_port_hashtable[index];
8373 spin_lock_bh(&head->l 8366 spin_lock_bh(&head->lock);
8374 sctp_for_each_hentry( 8367 sctp_for_each_hentry(pp, &head->chain)
8375 if ((pp->port 8368 if ((pp->port == rover) &&
8376 net_eq(ne 8369 net_eq(net, pp->net))
8377 goto 8370 goto next;
8378 break; 8371 break;
8379 next: 8372 next:
8380 spin_unlock_bh(&head- 8373 spin_unlock_bh(&head->lock);
8381 cond_resched(); 8374 cond_resched();
8382 } while (--remaining > 0); 8375 } while (--remaining > 0);
8383 8376
8384 /* Exhausted local port range 8377 /* Exhausted local port range during search? */
8385 ret = 1; 8378 ret = 1;
8386 if (remaining <= 0) 8379 if (remaining <= 0)
8387 return ret; 8380 return ret;
8388 8381
8389 /* OK, here is the one we wil 8382 /* OK, here is the one we will use. HEAD (the port
8390 * hash table list entry) is 8383 * hash table list entry) is non-NULL and we hold it's
8391 * mutex. 8384 * mutex.
8392 */ 8385 */
8393 snum = rover; 8386 snum = rover;
8394 } else { 8387 } else {
8395 /* We are given an specific p 8388 /* We are given an specific port number; we verify
8396 * that it is not being used. 8389 * that it is not being used. If it is used, we will
8397 * exahust the search in the 8390 * exahust the search in the hash list corresponding
8398 * to the port number (snum) 8391 * to the port number (snum) - we detect that with the
8399 * port iterator, pp being NU 8392 * port iterator, pp being NULL.
8400 */ 8393 */
8401 head = &sctp_port_hashtable[s 8394 head = &sctp_port_hashtable[sctp_phashfn(net, snum)];
8402 spin_lock_bh(&head->lock); 8395 spin_lock_bh(&head->lock);
8403 sctp_for_each_hentry(pp, &hea 8396 sctp_for_each_hentry(pp, &head->chain) {
8404 if ((pp->port == snum 8397 if ((pp->port == snum) && net_eq(pp->net, net))
8405 goto pp_found 8398 goto pp_found;
8406 } 8399 }
8407 } 8400 }
8408 pp = NULL; 8401 pp = NULL;
8409 goto pp_not_found; 8402 goto pp_not_found;
8410 pp_found: 8403 pp_found:
8411 if (!hlist_empty(&pp->owner)) { 8404 if (!hlist_empty(&pp->owner)) {
8412 /* We had a port hash table h 8405 /* We had a port hash table hit - there is an
8413 * available port (pp != NULL 8406 * available port (pp != NULL) and it is being
8414 * used by other socket (pp-> 8407 * used by other socket (pp->owner not empty); that other
8415 * socket is going to be sk2. 8408 * socket is going to be sk2.
8416 */ 8409 */
8417 struct sock *sk2; 8410 struct sock *sk2;
8418 8411
8419 pr_debug("%s: found a possibl 8412 pr_debug("%s: found a possible match\n", __func__);
8420 8413
8421 if ((pp->fastreuse && reuse & 8414 if ((pp->fastreuse && reuse &&
8422 sk->sk_state != SCTP_SS_ 8415 sk->sk_state != SCTP_SS_LISTENING) ||
8423 (pp->fastreuseport && sk- 8416 (pp->fastreuseport && sk->sk_reuseport &&
8424 uid_eq(pp->fastuid, uid) 8417 uid_eq(pp->fastuid, uid)))
8425 goto success; 8418 goto success;
8426 8419
8427 /* Run through the list of so 8420 /* Run through the list of sockets bound to the port
8428 * (pp->port) [via the pointe 8421 * (pp->port) [via the pointers bind_next and
8429 * bind_pprev in the struct s 8422 * bind_pprev in the struct sock *sk2 (pp->sk)]. On each one,
8430 * we get the endpoint they d 8423 * we get the endpoint they describe and run through
8431 * the endpoint's list of IP 8424 * the endpoint's list of IP (v4 or v6) addresses,
8432 * comparing each of the addr 8425 * comparing each of the addresses with the address of
8433 * the socket sk. If we find 8426 * the socket sk. If we find a match, then that means
8434 * that this port/socket (sk) 8427 * that this port/socket (sk) combination are already
8435 * in an endpoint. 8428 * in an endpoint.
8436 */ 8429 */
8437 sk_for_each_bound(sk2, &pp->o 8430 sk_for_each_bound(sk2, &pp->owner) {
8438 int bound_dev_if2 = R 8431 int bound_dev_if2 = READ_ONCE(sk2->sk_bound_dev_if);
8439 struct sctp_sock *sp2 8432 struct sctp_sock *sp2 = sctp_sk(sk2);
8440 struct sctp_endpoint 8433 struct sctp_endpoint *ep2 = sp2->ep;
8441 8434
8442 if (sk == sk2 || 8435 if (sk == sk2 ||
8443 (reuse && (sk2->s 8436 (reuse && (sk2->sk_reuse || sp2->reuse) &&
8444 sk2->sk_state != 8437 sk2->sk_state != SCTP_SS_LISTENING) ||
8445 (sk->sk_reuseport 8438 (sk->sk_reuseport && sk2->sk_reuseport &&
8446 uid_eq(uid, sock 8439 uid_eq(uid, sock_i_uid(sk2))))
8447 continue; 8440 continue;
8448 8441
8449 if ((!sk->sk_bound_de 8442 if ((!sk->sk_bound_dev_if || !bound_dev_if2 ||
8450 sk->sk_bound_dev 8443 sk->sk_bound_dev_if == bound_dev_if2) &&
8451 sctp_bind_addr_co 8444 sctp_bind_addr_conflict(&ep2->base.bind_addr,
8452 8445 addr, sp2, sp)) {
8453 ret = 1; 8446 ret = 1;
8454 goto fail_unl 8447 goto fail_unlock;
8455 } 8448 }
8456 } 8449 }
8457 8450
8458 pr_debug("%s: found a match\n 8451 pr_debug("%s: found a match\n", __func__);
8459 } 8452 }
8460 pp_not_found: 8453 pp_not_found:
8461 /* If there was a hash table miss, cr 8454 /* If there was a hash table miss, create a new port. */
8462 ret = 1; 8455 ret = 1;
8463 if (!pp && !(pp = sctp_bucket_create( 8456 if (!pp && !(pp = sctp_bucket_create(head, net, snum)))
8464 goto fail_unlock; 8457 goto fail_unlock;
8465 8458
8466 /* In either case (hit or miss), make 8459 /* In either case (hit or miss), make sure fastreuse is 1 only
8467 * if sk->sk_reuse is too (that is, i 8460 * if sk->sk_reuse is too (that is, if the caller requested
8468 * SO_REUSEADDR on this socket -sk-). 8461 * SO_REUSEADDR on this socket -sk-).
8469 */ 8462 */
8470 if (hlist_empty(&pp->owner)) { 8463 if (hlist_empty(&pp->owner)) {
8471 if (reuse && sk->sk_state != 8464 if (reuse && sk->sk_state != SCTP_SS_LISTENING)
8472 pp->fastreuse = 1; 8465 pp->fastreuse = 1;
8473 else 8466 else
8474 pp->fastreuse = 0; 8467 pp->fastreuse = 0;
8475 8468
8476 if (sk->sk_reuseport) { 8469 if (sk->sk_reuseport) {
8477 pp->fastreuseport = 1 8470 pp->fastreuseport = 1;
8478 pp->fastuid = uid; 8471 pp->fastuid = uid;
8479 } else { 8472 } else {
8480 pp->fastreuseport = 0 8473 pp->fastreuseport = 0;
8481 } 8474 }
8482 } else { 8475 } else {
8483 if (pp->fastreuse && 8476 if (pp->fastreuse &&
8484 (!reuse || sk->sk_state = 8477 (!reuse || sk->sk_state == SCTP_SS_LISTENING))
8485 pp->fastreuse = 0; 8478 pp->fastreuse = 0;
8486 8479
8487 if (pp->fastreuseport && 8480 if (pp->fastreuseport &&
8488 (!sk->sk_reuseport || !ui 8481 (!sk->sk_reuseport || !uid_eq(pp->fastuid, uid)))
8489 pp->fastreuseport = 0 8482 pp->fastreuseport = 0;
8490 } 8483 }
8491 8484
8492 /* We are set, so fill up all the dat 8485 /* We are set, so fill up all the data in the hash table
8493 * entry, tie the socket list informa 8486 * entry, tie the socket list information with the rest of the
8494 * sockets FIXME: Blurry, NPI (ipg). 8487 * sockets FIXME: Blurry, NPI (ipg).
8495 */ 8488 */
8496 success: 8489 success:
8497 if (!sp->bind_hash) { 8490 if (!sp->bind_hash) {
8498 inet_sk(sk)->inet_num = snum; 8491 inet_sk(sk)->inet_num = snum;
8499 sk_add_bind_node(sk, &pp->own 8492 sk_add_bind_node(sk, &pp->owner);
8500 sp->bind_hash = pp; 8493 sp->bind_hash = pp;
8501 } 8494 }
8502 ret = 0; 8495 ret = 0;
8503 8496
8504 fail_unlock: 8497 fail_unlock:
8505 spin_unlock_bh(&head->lock); 8498 spin_unlock_bh(&head->lock);
8506 return ret; 8499 return ret;
8507 } 8500 }
8508 8501
8509 /* Assign a 'snum' port to the socket. If sn 8502 /* Assign a 'snum' port to the socket. If snum == 0, an ephemeral
8510 * port is requested. 8503 * port is requested.
8511 */ 8504 */
8512 static int sctp_get_port(struct sock *sk, uns 8505 static int sctp_get_port(struct sock *sk, unsigned short snum)
8513 { 8506 {
8514 union sctp_addr addr; 8507 union sctp_addr addr;
8515 struct sctp_af *af = sctp_sk(sk)->pf- 8508 struct sctp_af *af = sctp_sk(sk)->pf->af;
8516 8509
8517 /* Set up a dummy address struct from 8510 /* Set up a dummy address struct from the sk. */
8518 af->from_sk(&addr, sk); 8511 af->from_sk(&addr, sk);
8519 addr.v4.sin_port = htons(snum); 8512 addr.v4.sin_port = htons(snum);
8520 8513
8521 /* Note: sk->sk_num gets filled in if 8514 /* Note: sk->sk_num gets filled in if ephemeral port request. */
8522 return sctp_get_port_local(sk, &addr) 8515 return sctp_get_port_local(sk, &addr);
8523 } 8516 }
8524 8517
8525 /* 8518 /*
8526 * Move a socket to LISTENING state. 8519 * Move a socket to LISTENING state.
8527 */ 8520 */
8528 static int sctp_listen_start(struct sock *sk, 8521 static int sctp_listen_start(struct sock *sk, int backlog)
8529 { 8522 {
8530 struct sctp_sock *sp = sctp_sk(sk); 8523 struct sctp_sock *sp = sctp_sk(sk);
8531 struct sctp_endpoint *ep = sp->ep; 8524 struct sctp_endpoint *ep = sp->ep;
8532 struct crypto_shash *tfm = NULL; 8525 struct crypto_shash *tfm = NULL;
8533 char alg[32]; 8526 char alg[32];
8534 int err; <<
8535 8527
8536 /* Allocate HMAC for generating cooki 8528 /* Allocate HMAC for generating cookie. */
8537 if (!sp->hmac && sp->sctp_hmac_alg) { 8529 if (!sp->hmac && sp->sctp_hmac_alg) {
8538 sprintf(alg, "hmac(%s)", sp-> 8530 sprintf(alg, "hmac(%s)", sp->sctp_hmac_alg);
8539 tfm = crypto_alloc_shash(alg, 8531 tfm = crypto_alloc_shash(alg, 0, 0);
8540 if (IS_ERR(tfm)) { 8532 if (IS_ERR(tfm)) {
8541 net_info_ratelimited( 8533 net_info_ratelimited("failed to load transform for %s: %ld\n",
8542 8534 sp->sctp_hmac_alg, PTR_ERR(tfm));
8543 return -ENOSYS; 8535 return -ENOSYS;
8544 } 8536 }
8545 sctp_sk(sk)->hmac = tfm; 8537 sctp_sk(sk)->hmac = tfm;
8546 } 8538 }
8547 8539
8548 /* 8540 /*
8549 * If a bind() or sctp_bindx() is not 8541 * If a bind() or sctp_bindx() is not called prior to a listen()
8550 * call that allows new associations 8542 * call that allows new associations to be accepted, the system
8551 * picks an ephemeral port and will c 8543 * picks an ephemeral port and will choose an address set equivalent
8552 * to binding with a wildcard address 8544 * to binding with a wildcard address.
8553 * 8545 *
8554 * This is not currently spelled out 8546 * This is not currently spelled out in the SCTP sockets
8555 * extensions draft, but follows the 8547 * extensions draft, but follows the practice as seen in TCP
8556 * sockets. 8548 * sockets.
8557 * 8549 *
8558 */ 8550 */
8559 inet_sk_set_state(sk, SCTP_SS_LISTENI 8551 inet_sk_set_state(sk, SCTP_SS_LISTENING);
8560 if (!ep->base.bind_addr.port) { 8552 if (!ep->base.bind_addr.port) {
8561 if (sctp_autobind(sk)) { !! 8553 if (sctp_autobind(sk))
8562 err = -EAGAIN; !! 8554 return -EAGAIN;
8563 goto err; <<
8564 } <<
8565 } else { 8555 } else {
8566 if (sctp_get_port(sk, inet_sk 8556 if (sctp_get_port(sk, inet_sk(sk)->inet_num)) {
8567 err = -EADDRINUSE; !! 8557 inet_sk_set_state(sk, SCTP_SS_CLOSED);
8568 goto err; !! 8558 return -EADDRINUSE;
8569 } 8559 }
8570 } 8560 }
8571 8561
8572 WRITE_ONCE(sk->sk_max_ack_backlog, ba 8562 WRITE_ONCE(sk->sk_max_ack_backlog, backlog);
8573 err = sctp_hash_endpoint(ep); !! 8563 return sctp_hash_endpoint(ep);
8574 if (err) <<
8575 goto err; <<
8576 <<
8577 return 0; <<
8578 err: <<
8579 inet_sk_set_state(sk, SCTP_SS_CLOSED) <<
8580 return err; <<
8581 } 8564 }
8582 8565
8583 /* 8566 /*
8584 * 4.1.3 / 5.1.3 listen() 8567 * 4.1.3 / 5.1.3 listen()
8585 * 8568 *
8586 * By default, new associations are not acc 8569 * By default, new associations are not accepted for UDP style sockets.
8587 * An application uses listen() to mark a s 8570 * An application uses listen() to mark a socket as being able to
8588 * accept new associations. 8571 * accept new associations.
8589 * 8572 *
8590 * On TCP style sockets, applications use l 8573 * On TCP style sockets, applications use listen() to ready the SCTP
8591 * endpoint for accepting inbound associati 8574 * endpoint for accepting inbound associations.
8592 * 8575 *
8593 * On both types of endpoints a backlog of 8576 * On both types of endpoints a backlog of '' disables listening.
8594 * 8577 *
8595 * Move a socket to LISTENING state. 8578 * Move a socket to LISTENING state.
8596 */ 8579 */
8597 int sctp_inet_listen(struct socket *sock, int 8580 int sctp_inet_listen(struct socket *sock, int backlog)
8598 { 8581 {
8599 struct sock *sk = sock->sk; 8582 struct sock *sk = sock->sk;
8600 struct sctp_endpoint *ep = sctp_sk(sk 8583 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
8601 int err = -EINVAL; 8584 int err = -EINVAL;
8602 8585
8603 if (unlikely(backlog < 0)) 8586 if (unlikely(backlog < 0))
8604 return err; 8587 return err;
8605 8588
8606 lock_sock(sk); 8589 lock_sock(sk);
8607 8590
8608 /* Peeled-off sockets are not allowed 8591 /* Peeled-off sockets are not allowed to listen(). */
8609 if (sctp_style(sk, UDP_HIGH_BANDWIDTH 8592 if (sctp_style(sk, UDP_HIGH_BANDWIDTH))
8610 goto out; 8593 goto out;
8611 8594
8612 if (sock->state != SS_UNCONNECTED) 8595 if (sock->state != SS_UNCONNECTED)
8613 goto out; 8596 goto out;
8614 8597
8615 if (!sctp_sstate(sk, LISTENING) && !s 8598 if (!sctp_sstate(sk, LISTENING) && !sctp_sstate(sk, CLOSED))
8616 goto out; 8599 goto out;
8617 8600
8618 /* If backlog is zero, disable listen 8601 /* If backlog is zero, disable listening. */
8619 if (!backlog) { 8602 if (!backlog) {
8620 if (sctp_sstate(sk, CLOSED)) 8603 if (sctp_sstate(sk, CLOSED))
8621 goto out; 8604 goto out;
8622 8605
8623 err = 0; 8606 err = 0;
8624 sctp_unhash_endpoint(ep); 8607 sctp_unhash_endpoint(ep);
8625 sk->sk_state = SCTP_SS_CLOSED 8608 sk->sk_state = SCTP_SS_CLOSED;
8626 if (sk->sk_reuse || sctp_sk(s 8609 if (sk->sk_reuse || sctp_sk(sk)->reuse)
8627 sctp_sk(sk)->bind_has 8610 sctp_sk(sk)->bind_hash->fastreuse = 1;
8628 goto out; 8611 goto out;
8629 } 8612 }
8630 8613
8631 /* If we are already listening, just 8614 /* If we are already listening, just update the backlog */
8632 if (sctp_sstate(sk, LISTENING)) 8615 if (sctp_sstate(sk, LISTENING))
8633 WRITE_ONCE(sk->sk_max_ack_bac 8616 WRITE_ONCE(sk->sk_max_ack_backlog, backlog);
8634 else { 8617 else {
8635 err = sctp_listen_start(sk, b 8618 err = sctp_listen_start(sk, backlog);
8636 if (err) 8619 if (err)
8637 goto out; 8620 goto out;
8638 } 8621 }
8639 8622
8640 err = 0; 8623 err = 0;
8641 out: 8624 out:
8642 release_sock(sk); 8625 release_sock(sk);
8643 return err; 8626 return err;
8644 } 8627 }
8645 8628
8646 /* 8629 /*
8647 * This function is done by modeling the curr 8630 * This function is done by modeling the current datagram_poll() and the
8648 * tcp_poll(). Note that, based on these imp 8631 * tcp_poll(). Note that, based on these implementations, we don't
8649 * lock the socket in this function, even tho 8632 * lock the socket in this function, even though it seems that,
8650 * ideally, locking or some other mechanisms 8633 * ideally, locking or some other mechanisms can be used to ensure
8651 * the integrity of the counters (sndbuf and 8634 * the integrity of the counters (sndbuf and wmem_alloc) used
8652 * in this place. We assume that we don't ne 8635 * in this place. We assume that we don't need locks either until proven
8653 * otherwise. 8636 * otherwise.
8654 * 8637 *
8655 * Another thing to note is that we include t 8638 * Another thing to note is that we include the Async I/O support
8656 * here, again, by modeling the current TCP/U 8639 * here, again, by modeling the current TCP/UDP code. We don't have
8657 * a good way to test with it yet. 8640 * a good way to test with it yet.
8658 */ 8641 */
8659 __poll_t sctp_poll(struct file *file, struct 8642 __poll_t sctp_poll(struct file *file, struct socket *sock, poll_table *wait)
8660 { 8643 {
8661 struct sock *sk = sock->sk; 8644 struct sock *sk = sock->sk;
8662 struct sctp_sock *sp = sctp_sk(sk); 8645 struct sctp_sock *sp = sctp_sk(sk);
8663 __poll_t mask; 8646 __poll_t mask;
8664 8647
8665 poll_wait(file, sk_sleep(sk), wait); 8648 poll_wait(file, sk_sleep(sk), wait);
8666 8649
8667 sock_rps_record_flow(sk); 8650 sock_rps_record_flow(sk);
8668 8651
8669 /* A TCP-style listening socket becom 8652 /* A TCP-style listening socket becomes readable when the accept queue
8670 * is not empty. 8653 * is not empty.
8671 */ 8654 */
8672 if (sctp_style(sk, TCP) && sctp_sstat 8655 if (sctp_style(sk, TCP) && sctp_sstate(sk, LISTENING))
8673 return (!list_empty(&sp->ep-> 8656 return (!list_empty(&sp->ep->asocs)) ?
8674 (EPOLLIN | EPOLLRDNOR 8657 (EPOLLIN | EPOLLRDNORM) : 0;
8675 8658
8676 mask = 0; 8659 mask = 0;
8677 8660
8678 /* Is there any exceptional events? 8661 /* Is there any exceptional events? */
8679 if (sk->sk_err || !skb_queue_empty_lo 8662 if (sk->sk_err || !skb_queue_empty_lockless(&sk->sk_error_queue))
8680 mask |= EPOLLERR | 8663 mask |= EPOLLERR |
8681 (sock_flag(sk, SOCK_S 8664 (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? EPOLLPRI : 0);
8682 if (sk->sk_shutdown & RCV_SHUTDOWN) 8665 if (sk->sk_shutdown & RCV_SHUTDOWN)
8683 mask |= EPOLLRDHUP | EPOLLIN 8666 mask |= EPOLLRDHUP | EPOLLIN | EPOLLRDNORM;
8684 if (sk->sk_shutdown == SHUTDOWN_MASK) 8667 if (sk->sk_shutdown == SHUTDOWN_MASK)
8685 mask |= EPOLLHUP; 8668 mask |= EPOLLHUP;
8686 8669
8687 /* Is it readable? Reconsider this c 8670 /* Is it readable? Reconsider this code with TCP-style support. */
8688 if (!skb_queue_empty_lockless(&sk->sk 8671 if (!skb_queue_empty_lockless(&sk->sk_receive_queue))
8689 mask |= EPOLLIN | EPOLLRDNORM 8672 mask |= EPOLLIN | EPOLLRDNORM;
8690 8673
8691 /* The association is either gone or 8674 /* The association is either gone or not ready. */
8692 if (!sctp_style(sk, UDP) && sctp_ssta 8675 if (!sctp_style(sk, UDP) && sctp_sstate(sk, CLOSED))
8693 return mask; 8676 return mask;
8694 8677
8695 /* Is it writable? */ 8678 /* Is it writable? */
8696 if (sctp_writeable(sk)) { 8679 if (sctp_writeable(sk)) {
8697 mask |= EPOLLOUT | EPOLLWRNOR 8680 mask |= EPOLLOUT | EPOLLWRNORM;
8698 } else { 8681 } else {
8699 sk_set_bit(SOCKWQ_ASYNC_NOSPA 8682 sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);
8700 /* 8683 /*
8701 * Since the socket is not lo 8684 * Since the socket is not locked, the buffer
8702 * might be made available af 8685 * might be made available after the writeable check and
8703 * before the bit is set. Th 8686 * before the bit is set. This could cause a lost I/O
8704 * signal. tcp_poll() has a 8687 * signal. tcp_poll() has a race breaker for this race
8705 * condition. Based on their 8688 * condition. Based on their implementation, we put
8706 * in the following code to c 8689 * in the following code to cover it as well.
8707 */ 8690 */
8708 if (sctp_writeable(sk)) 8691 if (sctp_writeable(sk))
8709 mask |= EPOLLOUT | EP 8692 mask |= EPOLLOUT | EPOLLWRNORM;
8710 } 8693 }
8711 return mask; 8694 return mask;
8712 } 8695 }
8713 8696
8714 /******************************************** 8697 /********************************************************************
8715 * 2nd Level Abstractions 8698 * 2nd Level Abstractions
8716 ******************************************** 8699 ********************************************************************/
8717 8700
8718 static struct sctp_bind_bucket *sctp_bucket_c 8701 static struct sctp_bind_bucket *sctp_bucket_create(
8719 struct sctp_bind_hashbucket *head, st 8702 struct sctp_bind_hashbucket *head, struct net *net, unsigned short snum)
8720 { 8703 {
8721 struct sctp_bind_bucket *pp; 8704 struct sctp_bind_bucket *pp;
8722 8705
8723 pp = kmem_cache_alloc(sctp_bucket_cac 8706 pp = kmem_cache_alloc(sctp_bucket_cachep, GFP_ATOMIC);
8724 if (pp) { 8707 if (pp) {
8725 SCTP_DBG_OBJCNT_INC(bind_buck 8708 SCTP_DBG_OBJCNT_INC(bind_bucket);
8726 pp->port = snum; 8709 pp->port = snum;
8727 pp->fastreuse = 0; 8710 pp->fastreuse = 0;
8728 INIT_HLIST_HEAD(&pp->owner); 8711 INIT_HLIST_HEAD(&pp->owner);
8729 pp->net = net; 8712 pp->net = net;
8730 hlist_add_head(&pp->node, &he 8713 hlist_add_head(&pp->node, &head->chain);
8731 } 8714 }
8732 return pp; 8715 return pp;
8733 } 8716 }
8734 8717
8735 /* Caller must hold hashbucket lock for this 8718 /* Caller must hold hashbucket lock for this tb with local BH disabled */
8736 static void sctp_bucket_destroy(struct sctp_b 8719 static void sctp_bucket_destroy(struct sctp_bind_bucket *pp)
8737 { 8720 {
8738 if (pp && hlist_empty(&pp->owner)) { 8721 if (pp && hlist_empty(&pp->owner)) {
8739 __hlist_del(&pp->node); 8722 __hlist_del(&pp->node);
8740 kmem_cache_free(sctp_bucket_c 8723 kmem_cache_free(sctp_bucket_cachep, pp);
8741 SCTP_DBG_OBJCNT_DEC(bind_buck 8724 SCTP_DBG_OBJCNT_DEC(bind_bucket);
8742 } 8725 }
8743 } 8726 }
8744 8727
8745 /* Release this socket's reference to a local 8728 /* Release this socket's reference to a local port. */
8746 static inline void __sctp_put_port(struct soc 8729 static inline void __sctp_put_port(struct sock *sk)
8747 { 8730 {
8748 struct sctp_bind_hashbucket *head = 8731 struct sctp_bind_hashbucket *head =
8749 &sctp_port_hashtable[sctp_pha 8732 &sctp_port_hashtable[sctp_phashfn(sock_net(sk),
8750 8733 inet_sk(sk)->inet_num)];
8751 struct sctp_bind_bucket *pp; 8734 struct sctp_bind_bucket *pp;
8752 8735
8753 spin_lock(&head->lock); 8736 spin_lock(&head->lock);
8754 pp = sctp_sk(sk)->bind_hash; 8737 pp = sctp_sk(sk)->bind_hash;
8755 __sk_del_bind_node(sk); 8738 __sk_del_bind_node(sk);
8756 sctp_sk(sk)->bind_hash = NULL; 8739 sctp_sk(sk)->bind_hash = NULL;
8757 inet_sk(sk)->inet_num = 0; 8740 inet_sk(sk)->inet_num = 0;
8758 sctp_bucket_destroy(pp); 8741 sctp_bucket_destroy(pp);
8759 spin_unlock(&head->lock); 8742 spin_unlock(&head->lock);
8760 } 8743 }
8761 8744
8762 void sctp_put_port(struct sock *sk) 8745 void sctp_put_port(struct sock *sk)
8763 { 8746 {
8764 local_bh_disable(); 8747 local_bh_disable();
8765 __sctp_put_port(sk); 8748 __sctp_put_port(sk);
8766 local_bh_enable(); 8749 local_bh_enable();
8767 } 8750 }
8768 8751
8769 /* 8752 /*
8770 * The system picks an ephemeral port and cho 8753 * The system picks an ephemeral port and choose an address set equivalent
8771 * to binding with a wildcard address. 8754 * to binding with a wildcard address.
8772 * One of those addresses will be the primary 8755 * One of those addresses will be the primary address for the association.
8773 * This automatically enables the multihoming 8756 * This automatically enables the multihoming capability of SCTP.
8774 */ 8757 */
8775 static int sctp_autobind(struct sock *sk) 8758 static int sctp_autobind(struct sock *sk)
8776 { 8759 {
8777 union sctp_addr autoaddr; 8760 union sctp_addr autoaddr;
8778 struct sctp_af *af; 8761 struct sctp_af *af;
8779 __be16 port; 8762 __be16 port;
8780 8763
8781 /* Initialize a local sockaddr struct 8764 /* Initialize a local sockaddr structure to INADDR_ANY. */
8782 af = sctp_sk(sk)->pf->af; 8765 af = sctp_sk(sk)->pf->af;
8783 8766
8784 port = htons(inet_sk(sk)->inet_num); 8767 port = htons(inet_sk(sk)->inet_num);
8785 af->inaddr_any(&autoaddr, port); 8768 af->inaddr_any(&autoaddr, port);
8786 8769
8787 return sctp_do_bind(sk, &autoaddr, af 8770 return sctp_do_bind(sk, &autoaddr, af->sockaddr_len);
8788 } 8771 }
8789 8772
8790 /* Parse out IPPROTO_SCTP CMSG headers. Perf 8773 /* Parse out IPPROTO_SCTP CMSG headers. Perform only minimal validation.
8791 * 8774 *
8792 * From RFC 2292 8775 * From RFC 2292
8793 * 4.2 The cmsghdr Structure * 8776 * 4.2 The cmsghdr Structure *
8794 * 8777 *
8795 * When ancillary data is sent or received, a 8778 * When ancillary data is sent or received, any number of ancillary data
8796 * objects can be specified by the msg_contro 8779 * objects can be specified by the msg_control and msg_controllen members of
8797 * the msghdr structure, because each object 8780 * the msghdr structure, because each object is preceded by
8798 * a cmsghdr structure defining the object's 8781 * a cmsghdr structure defining the object's length (the cmsg_len member).
8799 * Historically Berkeley-derived implementati 8782 * Historically Berkeley-derived implementations have passed only one object
8800 * at a time, but this API allows multiple ob 8783 * at a time, but this API allows multiple objects to be
8801 * passed in a single call to sendmsg() or re 8784 * passed in a single call to sendmsg() or recvmsg(). The following example
8802 * shows two ancillary data objects in a cont 8785 * shows two ancillary data objects in a control buffer.
8803 * 8786 *
8804 * |<--------------------------- msg_contro 8787 * |<--------------------------- msg_controllen -------------------------->|
8805 * | 8788 * | |
8806 * 8789 *
8807 * |<----- ancillary data object ----->|<-- 8790 * |<----- ancillary data object ----->|<----- ancillary data object ----->|
8808 * 8791 *
8809 * |<---------- CMSG_SPACE() --------->|<-- 8792 * |<---------- CMSG_SPACE() --------->|<---------- CMSG_SPACE() --------->|
8810 * | | 8793 * | | |
8811 * 8794 *
8812 * |<---------- cmsg_len ---------->| |<-- 8795 * |<---------- cmsg_len ---------->| |<--------- cmsg_len ----------->| |
8813 * 8796 *
8814 * |<--------- CMSG_LEN() --------->| |<-- 8797 * |<--------- CMSG_LEN() --------->| |<-------- CMSG_LEN() ---------->| |
8815 * | | | 8798 * | | | | |
8816 * 8799 *
8817 * +-----+-----+-----+--+-----------+--+--- 8800 * +-----+-----+-----+--+-----------+--+-----+-----+-----+--+-----------+--+
8818 * |cmsg_|cmsg_|cmsg_|XX| |XX|cms 8801 * |cmsg_|cmsg_|cmsg_|XX| |XX|cmsg_|cmsg_|cmsg_|XX| |XX|
8819 * 8802 *
8820 * |len |level|type |XX|cmsg_data[]|XX|len 8803 * |len |level|type |XX|cmsg_data[]|XX|len |level|type |XX|cmsg_data[]|XX|
8821 * 8804 *
8822 * +-----+-----+-----+--+-----------+--+--- 8805 * +-----+-----+-----+--+-----------+--+-----+-----+-----+--+-----------+--+
8823 * ^ 8806 * ^
8824 * | 8807 * |
8825 * 8808 *
8826 * msg_control 8809 * msg_control
8827 * points here 8810 * points here
8828 */ 8811 */
8829 static int sctp_msghdr_parse(const struct msg 8812 static int sctp_msghdr_parse(const struct msghdr *msg, struct sctp_cmsgs *cmsgs)
8830 { 8813 {
8831 struct msghdr *my_msg = (struct msghd 8814 struct msghdr *my_msg = (struct msghdr *)msg;
8832 struct cmsghdr *cmsg; 8815 struct cmsghdr *cmsg;
8833 8816
8834 for_each_cmsghdr(cmsg, my_msg) { 8817 for_each_cmsghdr(cmsg, my_msg) {
8835 if (!CMSG_OK(my_msg, cmsg)) 8818 if (!CMSG_OK(my_msg, cmsg))
8836 return -EINVAL; 8819 return -EINVAL;
8837 8820
8838 /* Should we parse this heade 8821 /* Should we parse this header or ignore? */
8839 if (cmsg->cmsg_level != IPPRO 8822 if (cmsg->cmsg_level != IPPROTO_SCTP)
8840 continue; 8823 continue;
8841 8824
8842 /* Strictly check lengths fol 8825 /* Strictly check lengths following example in SCM code. */
8843 switch (cmsg->cmsg_type) { 8826 switch (cmsg->cmsg_type) {
8844 case SCTP_INIT: 8827 case SCTP_INIT:
8845 /* SCTP Socket API Ex 8828 /* SCTP Socket API Extension
8846 * 5.3.1 SCTP Initiat 8829 * 5.3.1 SCTP Initiation Structure (SCTP_INIT)
8847 * 8830 *
8848 * This cmsghdr struc 8831 * This cmsghdr structure provides information for
8849 * initializing new S 8832 * initializing new SCTP associations with sendmsg().
8850 * The SCTP_INITMSG s 8833 * The SCTP_INITMSG socket option uses this same data
8851 * structure. This s 8834 * structure. This structure is not used for
8852 * recvmsg(). 8835 * recvmsg().
8853 * 8836 *
8854 * cmsg_level cmsg 8837 * cmsg_level cmsg_type cmsg_data[]
8855 * ------------ ---- 8838 * ------------ ------------ ----------------------
8856 * IPPROTO_SCTP SCTP 8839 * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg
8857 */ 8840 */
8858 if (cmsg->cmsg_len != 8841 if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct sctp_initmsg)))
8859 return -EINVA 8842 return -EINVAL;
8860 8843
8861 cmsgs->init = CMSG_DA 8844 cmsgs->init = CMSG_DATA(cmsg);
8862 break; 8845 break;
8863 8846
8864 case SCTP_SNDRCV: 8847 case SCTP_SNDRCV:
8865 /* SCTP Socket API Ex 8848 /* SCTP Socket API Extension
8866 * 5.3.2 SCTP Header 8849 * 5.3.2 SCTP Header Information Structure(SCTP_SNDRCV)
8867 * 8850 *
8868 * This cmsghdr struc 8851 * This cmsghdr structure specifies SCTP options for
8869 * sendmsg() and desc 8852 * sendmsg() and describes SCTP header information
8870 * about a received m 8853 * about a received message through recvmsg().
8871 * 8854 *
8872 * cmsg_level cmsg 8855 * cmsg_level cmsg_type cmsg_data[]
8873 * ------------ ---- 8856 * ------------ ------------ ----------------------
8874 * IPPROTO_SCTP SCTP 8857 * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo
8875 */ 8858 */
8876 if (cmsg->cmsg_len != 8859 if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct sctp_sndrcvinfo)))
8877 return -EINVA 8860 return -EINVAL;
8878 8861
8879 cmsgs->srinfo = CMSG_ 8862 cmsgs->srinfo = CMSG_DATA(cmsg);
8880 8863
8881 if (cmsgs->srinfo->si 8864 if (cmsgs->srinfo->sinfo_flags &
8882 ~(SCTP_UNORDERED 8865 ~(SCTP_UNORDERED | SCTP_ADDR_OVER |
8883 SCTP_SACK_IMMED 8866 SCTP_SACK_IMMEDIATELY | SCTP_SENDALL |
8884 SCTP_PR_SCTP_MA 8867 SCTP_PR_SCTP_MASK | SCTP_ABORT | SCTP_EOF))
8885 return -EINVA 8868 return -EINVAL;
8886 break; 8869 break;
8887 8870
8888 case SCTP_SNDINFO: 8871 case SCTP_SNDINFO:
8889 /* SCTP Socket API Ex 8872 /* SCTP Socket API Extension
8890 * 5.3.4 SCTP Send In 8873 * 5.3.4 SCTP Send Information Structure (SCTP_SNDINFO)
8891 * 8874 *
8892 * This cmsghdr struc 8875 * This cmsghdr structure specifies SCTP options for
8893 * sendmsg(). This st 8876 * sendmsg(). This structure and SCTP_RCVINFO replaces
8894 * SCTP_SNDRCV which 8877 * SCTP_SNDRCV which has been deprecated.
8895 * 8878 *
8896 * cmsg_level cmsg 8879 * cmsg_level cmsg_type cmsg_data[]
8897 * ------------ ---- 8880 * ------------ ------------ ---------------------
8898 * IPPROTO_SCTP SCTP 8881 * IPPROTO_SCTP SCTP_SNDINFO struct sctp_sndinfo
8899 */ 8882 */
8900 if (cmsg->cmsg_len != 8883 if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct sctp_sndinfo)))
8901 return -EINVA 8884 return -EINVAL;
8902 8885
8903 cmsgs->sinfo = CMSG_D 8886 cmsgs->sinfo = CMSG_DATA(cmsg);
8904 8887
8905 if (cmsgs->sinfo->snd 8888 if (cmsgs->sinfo->snd_flags &
8906 ~(SCTP_UNORDERED 8889 ~(SCTP_UNORDERED | SCTP_ADDR_OVER |
8907 SCTP_SACK_IMMED 8890 SCTP_SACK_IMMEDIATELY | SCTP_SENDALL |
8908 SCTP_PR_SCTP_MA 8891 SCTP_PR_SCTP_MASK | SCTP_ABORT | SCTP_EOF))
8909 return -EINVA 8892 return -EINVAL;
8910 break; 8893 break;
8911 case SCTP_PRINFO: 8894 case SCTP_PRINFO:
8912 /* SCTP Socket API Ex 8895 /* SCTP Socket API Extension
8913 * 5.3.7 SCTP PR-SCTP 8896 * 5.3.7 SCTP PR-SCTP Information Structure (SCTP_PRINFO)
8914 * 8897 *
8915 * This cmsghdr struc 8898 * This cmsghdr structure specifies SCTP options for sendmsg().
8916 * 8899 *
8917 * cmsg_level cmsg 8900 * cmsg_level cmsg_type cmsg_data[]
8918 * ------------ ---- 8901 * ------------ ------------ ---------------------
8919 * IPPROTO_SCTP SCTP 8902 * IPPROTO_SCTP SCTP_PRINFO struct sctp_prinfo
8920 */ 8903 */
8921 if (cmsg->cmsg_len != 8904 if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct sctp_prinfo)))
8922 return -EINVA 8905 return -EINVAL;
8923 8906
8924 cmsgs->prinfo = CMSG_ 8907 cmsgs->prinfo = CMSG_DATA(cmsg);
8925 if (cmsgs->prinfo->pr 8908 if (cmsgs->prinfo->pr_policy & ~SCTP_PR_SCTP_MASK)
8926 return -EINVA 8909 return -EINVAL;
8927 8910
8928 if (cmsgs->prinfo->pr 8911 if (cmsgs->prinfo->pr_policy == SCTP_PR_SCTP_NONE)
8929 cmsgs->prinfo 8912 cmsgs->prinfo->pr_value = 0;
8930 break; 8913 break;
8931 case SCTP_AUTHINFO: 8914 case SCTP_AUTHINFO:
8932 /* SCTP Socket API Ex 8915 /* SCTP Socket API Extension
8933 * 5.3.8 SCTP AUTH In 8916 * 5.3.8 SCTP AUTH Information Structure (SCTP_AUTHINFO)
8934 * 8917 *
8935 * This cmsghdr struc 8918 * This cmsghdr structure specifies SCTP options for sendmsg().
8936 * 8919 *
8937 * cmsg_level cmsg 8920 * cmsg_level cmsg_type cmsg_data[]
8938 * ------------ ---- 8921 * ------------ ------------ ---------------------
8939 * IPPROTO_SCTP SCTP 8922 * IPPROTO_SCTP SCTP_AUTHINFO struct sctp_authinfo
8940 */ 8923 */
8941 if (cmsg->cmsg_len != 8924 if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct sctp_authinfo)))
8942 return -EINVA 8925 return -EINVAL;
8943 8926
8944 cmsgs->authinfo = CMS 8927 cmsgs->authinfo = CMSG_DATA(cmsg);
8945 break; 8928 break;
8946 case SCTP_DSTADDRV4: 8929 case SCTP_DSTADDRV4:
8947 case SCTP_DSTADDRV6: 8930 case SCTP_DSTADDRV6:
8948 /* SCTP Socket API Ex 8931 /* SCTP Socket API Extension
8949 * 5.3.9/10 SCTP Dest 8932 * 5.3.9/10 SCTP Destination IPv4/6 Address Structure (SCTP_DSTADDRV4/6)
8950 * 8933 *
8951 * This cmsghdr struc 8934 * This cmsghdr structure specifies SCTP options for sendmsg().
8952 * 8935 *
8953 * cmsg_level cmsg 8936 * cmsg_level cmsg_type cmsg_data[]
8954 * ------------ ---- 8937 * ------------ ------------ ---------------------
8955 * IPPROTO_SCTP SCTP 8938 * IPPROTO_SCTP SCTP_DSTADDRV4 struct in_addr
8956 * ------------ ---- 8939 * ------------ ------------ ---------------------
8957 * IPPROTO_SCTP SCTP 8940 * IPPROTO_SCTP SCTP_DSTADDRV6 struct in6_addr
8958 */ 8941 */
8959 cmsgs->addrs_msg = my 8942 cmsgs->addrs_msg = my_msg;
8960 break; 8943 break;
8961 default: 8944 default:
8962 return -EINVAL; 8945 return -EINVAL;
8963 } 8946 }
8964 } 8947 }
8965 8948
8966 return 0; 8949 return 0;
8967 } 8950 }
8968 8951
8969 /* 8952 /*
8970 * Wait for a packet.. 8953 * Wait for a packet..
8971 * Note: This function is the same function a 8954 * Note: This function is the same function as in core/datagram.c
8972 * with a few modifications to make lksctp wo 8955 * with a few modifications to make lksctp work.
8973 */ 8956 */
8974 static int sctp_wait_for_packet(struct sock * 8957 static int sctp_wait_for_packet(struct sock *sk, int *err, long *timeo_p)
8975 { 8958 {
8976 int error; 8959 int error;
8977 DEFINE_WAIT(wait); 8960 DEFINE_WAIT(wait);
8978 8961
8979 prepare_to_wait_exclusive(sk_sleep(sk 8962 prepare_to_wait_exclusive(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
8980 8963
8981 /* Socket errors? */ 8964 /* Socket errors? */
8982 error = sock_error(sk); 8965 error = sock_error(sk);
8983 if (error) 8966 if (error)
8984 goto out; 8967 goto out;
8985 8968
8986 if (!skb_queue_empty(&sk->sk_receive_ 8969 if (!skb_queue_empty(&sk->sk_receive_queue))
8987 goto ready; 8970 goto ready;
8988 8971
8989 /* Socket shut down? */ 8972 /* Socket shut down? */
8990 if (sk->sk_shutdown & RCV_SHUTDOWN) 8973 if (sk->sk_shutdown & RCV_SHUTDOWN)
8991 goto out; 8974 goto out;
8992 8975
8993 /* Sequenced packets can come disconn 8976 /* Sequenced packets can come disconnected. If so we report the
8994 * problem. 8977 * problem.
8995 */ 8978 */
8996 error = -ENOTCONN; 8979 error = -ENOTCONN;
8997 8980
8998 /* Is there a good reason to think th 8981 /* Is there a good reason to think that we may receive some data? */
8999 if (list_empty(&sctp_sk(sk)->ep->asoc 8982 if (list_empty(&sctp_sk(sk)->ep->asocs) && !sctp_sstate(sk, LISTENING))
9000 goto out; 8983 goto out;
9001 8984
9002 /* Handle signals. */ 8985 /* Handle signals. */
9003 if (signal_pending(current)) 8986 if (signal_pending(current))
9004 goto interrupted; 8987 goto interrupted;
9005 8988
9006 /* Let another process have a go. Si 8989 /* Let another process have a go. Since we are going to sleep
9007 * anyway. Note: This may cause odd 8990 * anyway. Note: This may cause odd behaviors if the message
9008 * does not fit in the user's buffer, 8991 * does not fit in the user's buffer, but this seems to be the
9009 * only way to honor MSG_DONTWAIT rea 8992 * only way to honor MSG_DONTWAIT realistically.
9010 */ 8993 */
9011 release_sock(sk); 8994 release_sock(sk);
9012 *timeo_p = schedule_timeout(*timeo_p) 8995 *timeo_p = schedule_timeout(*timeo_p);
9013 lock_sock(sk); 8996 lock_sock(sk);
9014 8997
9015 ready: 8998 ready:
9016 finish_wait(sk_sleep(sk), &wait); 8999 finish_wait(sk_sleep(sk), &wait);
9017 return 0; 9000 return 0;
9018 9001
9019 interrupted: 9002 interrupted:
9020 error = sock_intr_errno(*timeo_p); 9003 error = sock_intr_errno(*timeo_p);
9021 9004
9022 out: 9005 out:
9023 finish_wait(sk_sleep(sk), &wait); 9006 finish_wait(sk_sleep(sk), &wait);
9024 *err = error; 9007 *err = error;
9025 return error; 9008 return error;
9026 } 9009 }
9027 9010
9028 /* Receive a datagram. 9011 /* Receive a datagram.
9029 * Note: This is pretty much the same routine 9012 * Note: This is pretty much the same routine as in core/datagram.c
9030 * with a few changes to make lksctp work. 9013 * with a few changes to make lksctp work.
9031 */ 9014 */
9032 struct sk_buff *sctp_skb_recv_datagram(struct 9015 struct sk_buff *sctp_skb_recv_datagram(struct sock *sk, int flags, int *err)
9033 { 9016 {
9034 int error; 9017 int error;
9035 struct sk_buff *skb; 9018 struct sk_buff *skb;
9036 long timeo; 9019 long timeo;
9037 9020
9038 timeo = sock_rcvtimeo(sk, flags & MSG 9021 timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
9039 9022
9040 pr_debug("%s: timeo:%ld, max:%ld\n", 9023 pr_debug("%s: timeo:%ld, max:%ld\n", __func__, timeo,
9041 MAX_SCHEDULE_TIMEOUT); 9024 MAX_SCHEDULE_TIMEOUT);
9042 9025
9043 do { 9026 do {
9044 /* Again only user level code 9027 /* Again only user level code calls this function,
9045 * so nothing interrupt level 9028 * so nothing interrupt level
9046 * will suddenly eat the rece 9029 * will suddenly eat the receive_queue.
9047 * 9030 *
9048 * Look at current nfs clien 9031 * Look at current nfs client by the way...
9049 * However, this function wa 9032 * However, this function was correct in any case. 8)
9050 */ 9033 */
9051 if (flags & MSG_PEEK) { 9034 if (flags & MSG_PEEK) {
9052 skb = skb_peek(&sk->s 9035 skb = skb_peek(&sk->sk_receive_queue);
9053 if (skb) 9036 if (skb)
9054 refcount_inc( 9037 refcount_inc(&skb->users);
9055 } else { 9038 } else {
9056 skb = __skb_dequeue(& 9039 skb = __skb_dequeue(&sk->sk_receive_queue);
9057 } 9040 }
9058 9041
9059 if (skb) 9042 if (skb)
9060 return skb; 9043 return skb;
9061 9044
9062 /* Caller is allowed not to c 9045 /* Caller is allowed not to check sk->sk_err before calling. */
9063 error = sock_error(sk); 9046 error = sock_error(sk);
9064 if (error) 9047 if (error)
9065 goto no_packet; 9048 goto no_packet;
9066 9049
9067 if (sk->sk_shutdown & RCV_SHU 9050 if (sk->sk_shutdown & RCV_SHUTDOWN)
9068 break; 9051 break;
9069 9052
9070 9053
9071 /* User doesn't want to wait. 9054 /* User doesn't want to wait. */
9072 error = -EAGAIN; 9055 error = -EAGAIN;
9073 if (!timeo) 9056 if (!timeo)
9074 goto no_packet; 9057 goto no_packet;
9075 } while (sctp_wait_for_packet(sk, err 9058 } while (sctp_wait_for_packet(sk, err, &timeo) == 0);
9076 9059
9077 return NULL; 9060 return NULL;
9078 9061
9079 no_packet: 9062 no_packet:
9080 *err = error; 9063 *err = error;
9081 return NULL; 9064 return NULL;
9082 } 9065 }
9083 9066
9084 /* If sndbuf has changed, wake up per associa 9067 /* If sndbuf has changed, wake up per association sndbuf waiters. */
9085 static void __sctp_write_space(struct sctp_as 9068 static void __sctp_write_space(struct sctp_association *asoc)
9086 { 9069 {
9087 struct sock *sk = asoc->base.sk; 9070 struct sock *sk = asoc->base.sk;
9088 9071
9089 if (sctp_wspace(asoc) <= 0) 9072 if (sctp_wspace(asoc) <= 0)
9090 return; 9073 return;
9091 9074
9092 if (waitqueue_active(&asoc->wait)) 9075 if (waitqueue_active(&asoc->wait))
9093 wake_up_interruptible(&asoc-> 9076 wake_up_interruptible(&asoc->wait);
9094 9077
9095 if (sctp_writeable(sk)) { 9078 if (sctp_writeable(sk)) {
9096 struct socket_wq *wq; 9079 struct socket_wq *wq;
9097 9080
9098 rcu_read_lock(); 9081 rcu_read_lock();
9099 wq = rcu_dereference(sk->sk_w 9082 wq = rcu_dereference(sk->sk_wq);
9100 if (wq) { 9083 if (wq) {
9101 if (waitqueue_active( 9084 if (waitqueue_active(&wq->wait))
9102 wake_up_inter 9085 wake_up_interruptible(&wq->wait);
9103 9086
9104 /* Note that we try t 9087 /* Note that we try to include the Async I/O support
9105 * here by modeling f 9088 * here by modeling from the current TCP/UDP code.
9106 * We have not tested 9089 * We have not tested with it yet.
9107 */ 9090 */
9108 if (!(sk->sk_shutdown 9091 if (!(sk->sk_shutdown & SEND_SHUTDOWN))
9109 sock_wake_asy 9092 sock_wake_async(wq, SOCK_WAKE_SPACE, POLL_OUT);
9110 } 9093 }
9111 rcu_read_unlock(); 9094 rcu_read_unlock();
9112 } 9095 }
9113 } 9096 }
9114 9097
9115 static void sctp_wake_up_waiters(struct sock 9098 static void sctp_wake_up_waiters(struct sock *sk,
9116 struct sctp_ 9099 struct sctp_association *asoc)
9117 { 9100 {
9118 struct sctp_association *tmp = asoc; 9101 struct sctp_association *tmp = asoc;
9119 9102
9120 /* We do accounting for the sndbuf sp 9103 /* We do accounting for the sndbuf space per association,
9121 * so we only need to wake our own as 9104 * so we only need to wake our own association.
9122 */ 9105 */
9123 if (asoc->ep->sndbuf_policy) 9106 if (asoc->ep->sndbuf_policy)
9124 return __sctp_write_space(aso 9107 return __sctp_write_space(asoc);
9125 9108
9126 /* If association goes down and is ju 9109 /* If association goes down and is just flushing its
9127 * outq, then just normally notify ot 9110 * outq, then just normally notify others.
9128 */ 9111 */
9129 if (asoc->base.dead) 9112 if (asoc->base.dead)
9130 return sctp_write_space(sk); 9113 return sctp_write_space(sk);
9131 9114
9132 /* Accounting for the sndbuf space is 9115 /* Accounting for the sndbuf space is per socket, so we
9133 * need to wake up others, try to be 9116 * need to wake up others, try to be fair and in case of
9134 * other associations, let them have 9117 * other associations, let them have a go first instead
9135 * of just doing a sctp_write_space() 9118 * of just doing a sctp_write_space() call.
9136 * 9119 *
9137 * Note that we reach sctp_wake_up_wa 9120 * Note that we reach sctp_wake_up_waiters() only when
9138 * associations free up queued chunks 9121 * associations free up queued chunks, thus we are under
9139 * lock and the list of associations 9122 * lock and the list of associations on a socket is
9140 * guaranteed not to change. 9123 * guaranteed not to change.
9141 */ 9124 */
9142 for (tmp = list_next_entry(tmp, asocs 9125 for (tmp = list_next_entry(tmp, asocs); 1;
9143 tmp = list_next_entry(tmp, asocs 9126 tmp = list_next_entry(tmp, asocs)) {
9144 /* Manually skip the head ele 9127 /* Manually skip the head element. */
9145 if (&tmp->asocs == &((sctp_sk 9128 if (&tmp->asocs == &((sctp_sk(sk))->ep->asocs))
9146 continue; 9129 continue;
9147 /* Wake up association. */ 9130 /* Wake up association. */
9148 __sctp_write_space(tmp); 9131 __sctp_write_space(tmp);
9149 /* We've reached the end. */ 9132 /* We've reached the end. */
9150 if (tmp == asoc) 9133 if (tmp == asoc)
9151 break; 9134 break;
9152 } 9135 }
9153 } 9136 }
9154 9137
9155 /* Do accounting for the sndbuf space. 9138 /* Do accounting for the sndbuf space.
9156 * Decrement the used sndbuf space of the cor 9139 * Decrement the used sndbuf space of the corresponding association by the
9157 * data size which was just transmitted(freed 9140 * data size which was just transmitted(freed).
9158 */ 9141 */
9159 static void sctp_wfree(struct sk_buff *skb) 9142 static void sctp_wfree(struct sk_buff *skb)
9160 { 9143 {
9161 struct sctp_chunk *chunk = skb_shinfo 9144 struct sctp_chunk *chunk = skb_shinfo(skb)->destructor_arg;
9162 struct sctp_association *asoc = chunk 9145 struct sctp_association *asoc = chunk->asoc;
9163 struct sock *sk = asoc->base.sk; 9146 struct sock *sk = asoc->base.sk;
9164 9147
9165 sk_mem_uncharge(sk, skb->truesize); 9148 sk_mem_uncharge(sk, skb->truesize);
9166 sk_wmem_queued_add(sk, -(skb->truesiz 9149 sk_wmem_queued_add(sk, -(skb->truesize + sizeof(struct sctp_chunk)));
9167 asoc->sndbuf_used -= skb->truesize + 9150 asoc->sndbuf_used -= skb->truesize + sizeof(struct sctp_chunk);
9168 WARN_ON(refcount_sub_and_test(sizeof( 9151 WARN_ON(refcount_sub_and_test(sizeof(struct sctp_chunk),
9169 &sk->sk 9152 &sk->sk_wmem_alloc));
9170 9153
9171 if (chunk->shkey) { 9154 if (chunk->shkey) {
9172 struct sctp_shared_key *shkey 9155 struct sctp_shared_key *shkey = chunk->shkey;
9173 9156
9174 /* refcnt == 2 and !list_empt 9157 /* refcnt == 2 and !list_empty mean after this release, it's
9175 * not being used anywhere, a 9158 * not being used anywhere, and it's time to notify userland
9176 * that this shkey can be fre 9159 * that this shkey can be freed if it's been deactivated.
9177 */ 9160 */
9178 if (shkey->deactivated && !li 9161 if (shkey->deactivated && !list_empty(&shkey->key_list) &&
9179 refcount_read(&shkey->ref 9162 refcount_read(&shkey->refcnt) == 2) {
9180 struct sctp_ulpevent 9163 struct sctp_ulpevent *ev;
9181 9164
9182 ev = sctp_ulpevent_ma 9165 ev = sctp_ulpevent_make_authkey(asoc, shkey->key_id,
9183 9166 SCTP_AUTH_FREE_KEY,
9184 9167 GFP_KERNEL);
9185 if (ev) 9168 if (ev)
9186 asoc->stream. 9169 asoc->stream.si->enqueue_event(&asoc->ulpq, ev);
9187 } 9170 }
9188 sctp_auth_shkey_release(chunk 9171 sctp_auth_shkey_release(chunk->shkey);
9189 } 9172 }
9190 9173
9191 sock_wfree(skb); 9174 sock_wfree(skb);
9192 sctp_wake_up_waiters(sk, asoc); 9175 sctp_wake_up_waiters(sk, asoc);
9193 9176
9194 sctp_association_put(asoc); 9177 sctp_association_put(asoc);
9195 } 9178 }
9196 9179
9197 /* Do accounting for the receive space on the 9180 /* Do accounting for the receive space on the socket.
9198 * Accounting for the association is done in 9181 * Accounting for the association is done in ulpevent.c
9199 * We set this as a destructor for the cloned 9182 * We set this as a destructor for the cloned data skbs so that
9200 * accounting is done at the correct time. 9183 * accounting is done at the correct time.
9201 */ 9184 */
9202 void sctp_sock_rfree(struct sk_buff *skb) 9185 void sctp_sock_rfree(struct sk_buff *skb)
9203 { 9186 {
9204 struct sock *sk = skb->sk; 9187 struct sock *sk = skb->sk;
9205 struct sctp_ulpevent *event = sctp_sk 9188 struct sctp_ulpevent *event = sctp_skb2event(skb);
9206 9189
9207 atomic_sub(event->rmem_len, &sk->sk_r 9190 atomic_sub(event->rmem_len, &sk->sk_rmem_alloc);
9208 9191
9209 /* 9192 /*
9210 * Mimic the behavior of sock_rfree 9193 * Mimic the behavior of sock_rfree
9211 */ 9194 */
9212 sk_mem_uncharge(sk, event->rmem_len); 9195 sk_mem_uncharge(sk, event->rmem_len);
9213 } 9196 }
9214 9197
9215 9198
9216 /* Helper function to wait for space in the s 9199 /* Helper function to wait for space in the sndbuf. */
9217 static int sctp_wait_for_sndbuf(struct sctp_a 9200 static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
9218 size_t msg_le 9201 size_t msg_len)
9219 { 9202 {
9220 struct sock *sk = asoc->base.sk; 9203 struct sock *sk = asoc->base.sk;
9221 long current_timeo = *timeo_p; 9204 long current_timeo = *timeo_p;
9222 DEFINE_WAIT(wait); 9205 DEFINE_WAIT(wait);
9223 int err = 0; 9206 int err = 0;
9224 9207
9225 pr_debug("%s: asoc:%p, timeo:%ld, msg 9208 pr_debug("%s: asoc:%p, timeo:%ld, msg_len:%zu\n", __func__, asoc,
9226 *timeo_p, msg_len); 9209 *timeo_p, msg_len);
9227 9210
9228 /* Increment the association's refcnt 9211 /* Increment the association's refcnt. */
9229 sctp_association_hold(asoc); 9212 sctp_association_hold(asoc);
9230 9213
9231 /* Wait on the association specific s 9214 /* Wait on the association specific sndbuf space. */
9232 for (;;) { 9215 for (;;) {
9233 prepare_to_wait_exclusive(&as 9216 prepare_to_wait_exclusive(&asoc->wait, &wait,
9234 TAS 9217 TASK_INTERRUPTIBLE);
9235 if (asoc->base.dead) 9218 if (asoc->base.dead)
9236 goto do_dead; 9219 goto do_dead;
9237 if (!*timeo_p) 9220 if (!*timeo_p)
9238 goto do_nonblock; 9221 goto do_nonblock;
9239 if (sk->sk_err || asoc->state 9222 if (sk->sk_err || asoc->state >= SCTP_STATE_SHUTDOWN_PENDING)
9240 goto do_error; 9223 goto do_error;
9241 if (signal_pending(current)) 9224 if (signal_pending(current))
9242 goto do_interrupted; 9225 goto do_interrupted;
9243 if ((int)msg_len <= sctp_wspa 9226 if ((int)msg_len <= sctp_wspace(asoc) &&
9244 sk_wmem_schedule(sk, msg_ 9227 sk_wmem_schedule(sk, msg_len))
9245 break; 9228 break;
9246 9229
9247 /* Let another process have a 9230 /* Let another process have a go. Since we are going
9248 * to sleep anyway. 9231 * to sleep anyway.
9249 */ 9232 */
9250 release_sock(sk); 9233 release_sock(sk);
9251 current_timeo = schedule_time 9234 current_timeo = schedule_timeout(current_timeo);
9252 lock_sock(sk); 9235 lock_sock(sk);
9253 if (sk != asoc->base.sk) 9236 if (sk != asoc->base.sk)
9254 goto do_error; 9237 goto do_error;
9255 9238
9256 *timeo_p = current_timeo; 9239 *timeo_p = current_timeo;
9257 } 9240 }
9258 9241
9259 out: 9242 out:
9260 finish_wait(&asoc->wait, &wait); 9243 finish_wait(&asoc->wait, &wait);
9261 9244
9262 /* Release the association's refcnt. 9245 /* Release the association's refcnt. */
9263 sctp_association_put(asoc); 9246 sctp_association_put(asoc);
9264 9247
9265 return err; 9248 return err;
9266 9249
9267 do_dead: 9250 do_dead:
9268 err = -ESRCH; 9251 err = -ESRCH;
9269 goto out; 9252 goto out;
9270 9253
9271 do_error: 9254 do_error:
9272 err = -EPIPE; 9255 err = -EPIPE;
9273 goto out; 9256 goto out;
9274 9257
9275 do_interrupted: 9258 do_interrupted:
9276 err = sock_intr_errno(*timeo_p); 9259 err = sock_intr_errno(*timeo_p);
9277 goto out; 9260 goto out;
9278 9261
9279 do_nonblock: 9262 do_nonblock:
9280 err = -EAGAIN; 9263 err = -EAGAIN;
9281 goto out; 9264 goto out;
9282 } 9265 }
9283 9266
9284 void sctp_data_ready(struct sock *sk) 9267 void sctp_data_ready(struct sock *sk)
9285 { 9268 {
9286 struct socket_wq *wq; 9269 struct socket_wq *wq;
9287 9270
9288 trace_sk_data_ready(sk); 9271 trace_sk_data_ready(sk);
9289 9272
9290 rcu_read_lock(); 9273 rcu_read_lock();
9291 wq = rcu_dereference(sk->sk_wq); 9274 wq = rcu_dereference(sk->sk_wq);
9292 if (skwq_has_sleeper(wq)) 9275 if (skwq_has_sleeper(wq))
9293 wake_up_interruptible_sync_po 9276 wake_up_interruptible_sync_poll(&wq->wait, EPOLLIN |
9294 9277 EPOLLRDNORM | EPOLLRDBAND);
9295 sk_wake_async_rcu(sk, SOCK_WAKE_WAITD !! 9278 sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
9296 rcu_read_unlock(); 9279 rcu_read_unlock();
9297 } 9280 }
9298 9281
9299 /* If socket sndbuf has changed, wake up all 9282 /* If socket sndbuf has changed, wake up all per association waiters. */
9300 void sctp_write_space(struct sock *sk) 9283 void sctp_write_space(struct sock *sk)
9301 { 9284 {
9302 struct sctp_association *asoc; 9285 struct sctp_association *asoc;
9303 9286
9304 /* Wake up the tasks in each wait que 9287 /* Wake up the tasks in each wait queue. */
9305 list_for_each_entry(asoc, &((sctp_sk( 9288 list_for_each_entry(asoc, &((sctp_sk(sk))->ep->asocs), asocs) {
9306 __sctp_write_space(asoc); 9289 __sctp_write_space(asoc);
9307 } 9290 }
9308 } 9291 }
9309 9292
9310 /* Is there any sndbuf space available on the 9293 /* Is there any sndbuf space available on the socket?
9311 * 9294 *
9312 * Note that sk_wmem_alloc is the sum of the 9295 * Note that sk_wmem_alloc is the sum of the send buffers on all of the
9313 * associations on the same socket. For a UD 9296 * associations on the same socket. For a UDP-style socket with
9314 * multiple associations, it is possible for 9297 * multiple associations, it is possible for it to be "unwriteable"
9315 * prematurely. I assume that this is accept 9298 * prematurely. I assume that this is acceptable because
9316 * a premature "unwriteable" is better than a 9299 * a premature "unwriteable" is better than an accidental "writeable" which
9317 * would cause an unwanted block under certai 9300 * would cause an unwanted block under certain circumstances. For the 1-1
9318 * UDP-style sockets or TCP-style sockets, th 9301 * UDP-style sockets or TCP-style sockets, this code should work.
9319 * - Daisy 9302 * - Daisy
9320 */ 9303 */
9321 static bool sctp_writeable(const struct sock 9304 static bool sctp_writeable(const struct sock *sk)
9322 { 9305 {
9323 return READ_ONCE(sk->sk_sndbuf) > REA 9306 return READ_ONCE(sk->sk_sndbuf) > READ_ONCE(sk->sk_wmem_queued);
9324 } 9307 }
9325 9308
9326 /* Wait for an association to go into ESTABLI 9309 /* Wait for an association to go into ESTABLISHED state. If timeout is 0,
9327 * returns immediately with EINPROGRESS. 9310 * returns immediately with EINPROGRESS.
9328 */ 9311 */
9329 static int sctp_wait_for_connect(struct sctp_ 9312 static int sctp_wait_for_connect(struct sctp_association *asoc, long *timeo_p)
9330 { 9313 {
9331 struct sock *sk = asoc->base.sk; 9314 struct sock *sk = asoc->base.sk;
9332 int err = 0; 9315 int err = 0;
9333 long current_timeo = *timeo_p; 9316 long current_timeo = *timeo_p;
9334 DEFINE_WAIT(wait); 9317 DEFINE_WAIT(wait);
9335 9318
9336 pr_debug("%s: asoc:%p, timeo:%ld\n", 9319 pr_debug("%s: asoc:%p, timeo:%ld\n", __func__, asoc, *timeo_p);
9337 9320
9338 /* Increment the association's refcnt 9321 /* Increment the association's refcnt. */
9339 sctp_association_hold(asoc); 9322 sctp_association_hold(asoc);
9340 9323
9341 for (;;) { 9324 for (;;) {
9342 prepare_to_wait_exclusive(&as 9325 prepare_to_wait_exclusive(&asoc->wait, &wait,
9343 TAS 9326 TASK_INTERRUPTIBLE);
9344 if (!*timeo_p) 9327 if (!*timeo_p)
9345 goto do_nonblock; 9328 goto do_nonblock;
9346 if (sk->sk_shutdown & RCV_SHU 9329 if (sk->sk_shutdown & RCV_SHUTDOWN)
9347 break; 9330 break;
9348 if (sk->sk_err || asoc->state 9331 if (sk->sk_err || asoc->state >= SCTP_STATE_SHUTDOWN_PENDING ||
9349 asoc->base.dead) 9332 asoc->base.dead)
9350 goto do_error; 9333 goto do_error;
9351 if (signal_pending(current)) 9334 if (signal_pending(current))
9352 goto do_interrupted; 9335 goto do_interrupted;
9353 9336
9354 if (sctp_state(asoc, ESTABLIS 9337 if (sctp_state(asoc, ESTABLISHED))
9355 break; 9338 break;
9356 9339
9357 /* Let another process have a 9340 /* Let another process have a go. Since we are going
9358 * to sleep anyway. 9341 * to sleep anyway.
9359 */ 9342 */
9360 release_sock(sk); 9343 release_sock(sk);
9361 current_timeo = schedule_time 9344 current_timeo = schedule_timeout(current_timeo);
9362 lock_sock(sk); 9345 lock_sock(sk);
9363 9346
9364 *timeo_p = current_timeo; 9347 *timeo_p = current_timeo;
9365 } 9348 }
9366 9349
9367 out: 9350 out:
9368 finish_wait(&asoc->wait, &wait); 9351 finish_wait(&asoc->wait, &wait);
9369 9352
9370 /* Release the association's refcnt. 9353 /* Release the association's refcnt. */
9371 sctp_association_put(asoc); 9354 sctp_association_put(asoc);
9372 9355
9373 return err; 9356 return err;
9374 9357
9375 do_error: 9358 do_error:
9376 if (asoc->init_err_counter + 1 > asoc 9359 if (asoc->init_err_counter + 1 > asoc->max_init_attempts)
9377 err = -ETIMEDOUT; 9360 err = -ETIMEDOUT;
9378 else 9361 else
9379 err = -ECONNREFUSED; 9362 err = -ECONNREFUSED;
9380 goto out; 9363 goto out;
9381 9364
9382 do_interrupted: 9365 do_interrupted:
9383 err = sock_intr_errno(*timeo_p); 9366 err = sock_intr_errno(*timeo_p);
9384 goto out; 9367 goto out;
9385 9368
9386 do_nonblock: 9369 do_nonblock:
9387 err = -EINPROGRESS; 9370 err = -EINPROGRESS;
9388 goto out; 9371 goto out;
9389 } 9372 }
9390 9373
9391 static int sctp_wait_for_accept(struct sock * 9374 static int sctp_wait_for_accept(struct sock *sk, long timeo)
9392 { 9375 {
9393 struct sctp_endpoint *ep; 9376 struct sctp_endpoint *ep;
9394 int err = 0; 9377 int err = 0;
9395 DEFINE_WAIT(wait); 9378 DEFINE_WAIT(wait);
9396 9379
9397 ep = sctp_sk(sk)->ep; 9380 ep = sctp_sk(sk)->ep;
9398 9381
9399 9382
9400 for (;;) { 9383 for (;;) {
9401 prepare_to_wait_exclusive(sk_ 9384 prepare_to_wait_exclusive(sk_sleep(sk), &wait,
9402 TAS 9385 TASK_INTERRUPTIBLE);
9403 9386
9404 if (list_empty(&ep->asocs)) { 9387 if (list_empty(&ep->asocs)) {
9405 release_sock(sk); 9388 release_sock(sk);
9406 timeo = schedule_time 9389 timeo = schedule_timeout(timeo);
9407 lock_sock(sk); 9390 lock_sock(sk);
9408 } 9391 }
9409 9392
9410 err = -EINVAL; 9393 err = -EINVAL;
9411 if (!sctp_sstate(sk, LISTENIN !! 9394 if (!sctp_sstate(sk, LISTENING))
9412 (sk->sk_shutdown & RCV_SH <<
9413 break; 9395 break;
9414 9396
9415 err = 0; 9397 err = 0;
9416 if (!list_empty(&ep->asocs)) 9398 if (!list_empty(&ep->asocs))
9417 break; 9399 break;
9418 9400
9419 err = sock_intr_errno(timeo); 9401 err = sock_intr_errno(timeo);
9420 if (signal_pending(current)) 9402 if (signal_pending(current))
9421 break; 9403 break;
9422 9404
9423 err = -EAGAIN; 9405 err = -EAGAIN;
9424 if (!timeo) 9406 if (!timeo)
9425 break; 9407 break;
9426 } 9408 }
9427 9409
9428 finish_wait(sk_sleep(sk), &wait); 9410 finish_wait(sk_sleep(sk), &wait);
9429 9411
9430 return err; 9412 return err;
9431 } 9413 }
9432 9414
9433 static void sctp_wait_for_close(struct sock * 9415 static void sctp_wait_for_close(struct sock *sk, long timeout)
9434 { 9416 {
9435 DEFINE_WAIT(wait); 9417 DEFINE_WAIT(wait);
9436 9418
9437 do { 9419 do {
9438 prepare_to_wait(sk_sleep(sk), 9420 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
9439 if (list_empty(&sctp_sk(sk)-> 9421 if (list_empty(&sctp_sk(sk)->ep->asocs))
9440 break; 9422 break;
9441 release_sock(sk); 9423 release_sock(sk);
9442 timeout = schedule_timeout(ti 9424 timeout = schedule_timeout(timeout);
9443 lock_sock(sk); 9425 lock_sock(sk);
9444 } while (!signal_pending(current) && 9426 } while (!signal_pending(current) && timeout);
9445 9427
9446 finish_wait(sk_sleep(sk), &wait); 9428 finish_wait(sk_sleep(sk), &wait);
9447 } 9429 }
9448 9430
9449 static void sctp_skb_set_owner_r_frag(struct 9431 static void sctp_skb_set_owner_r_frag(struct sk_buff *skb, struct sock *sk)
9450 { 9432 {
9451 struct sk_buff *frag; 9433 struct sk_buff *frag;
9452 9434
9453 if (!skb->data_len) 9435 if (!skb->data_len)
9454 goto done; 9436 goto done;
9455 9437
9456 /* Don't forget the fragments. */ 9438 /* Don't forget the fragments. */
9457 skb_walk_frags(skb, frag) 9439 skb_walk_frags(skb, frag)
9458 sctp_skb_set_owner_r_frag(fra 9440 sctp_skb_set_owner_r_frag(frag, sk);
9459 9441
9460 done: 9442 done:
9461 sctp_skb_set_owner_r(skb, sk); 9443 sctp_skb_set_owner_r(skb, sk);
9462 } 9444 }
9463 9445
9464 void sctp_copy_sock(struct sock *newsk, struc 9446 void sctp_copy_sock(struct sock *newsk, struct sock *sk,
9465 struct sctp_association * 9447 struct sctp_association *asoc)
9466 { 9448 {
9467 struct inet_sock *inet = inet_sk(sk); 9449 struct inet_sock *inet = inet_sk(sk);
9468 struct inet_sock *newinet; 9450 struct inet_sock *newinet;
9469 struct sctp_sock *sp = sctp_sk(sk); 9451 struct sctp_sock *sp = sctp_sk(sk);
9470 9452
9471 newsk->sk_type = sk->sk_type; 9453 newsk->sk_type = sk->sk_type;
9472 newsk->sk_bound_dev_if = sk->sk_bound 9454 newsk->sk_bound_dev_if = sk->sk_bound_dev_if;
9473 newsk->sk_flags = sk->sk_flags; 9455 newsk->sk_flags = sk->sk_flags;
9474 newsk->sk_tsflags = sk->sk_tsflags; 9456 newsk->sk_tsflags = sk->sk_tsflags;
9475 newsk->sk_no_check_tx = sk->sk_no_che 9457 newsk->sk_no_check_tx = sk->sk_no_check_tx;
9476 newsk->sk_no_check_rx = sk->sk_no_che 9458 newsk->sk_no_check_rx = sk->sk_no_check_rx;
9477 newsk->sk_reuse = sk->sk_reuse; 9459 newsk->sk_reuse = sk->sk_reuse;
9478 sctp_sk(newsk)->reuse = sp->reuse; 9460 sctp_sk(newsk)->reuse = sp->reuse;
9479 9461
9480 newsk->sk_shutdown = sk->sk_shutdown; 9462 newsk->sk_shutdown = sk->sk_shutdown;
9481 newsk->sk_destruct = sk->sk_destruct; 9463 newsk->sk_destruct = sk->sk_destruct;
9482 newsk->sk_family = sk->sk_family; 9464 newsk->sk_family = sk->sk_family;
9483 newsk->sk_protocol = IPPROTO_SCTP; 9465 newsk->sk_protocol = IPPROTO_SCTP;
9484 newsk->sk_backlog_rcv = sk->sk_prot-> 9466 newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
9485 newsk->sk_sndbuf = sk->sk_sndbuf; 9467 newsk->sk_sndbuf = sk->sk_sndbuf;
9486 newsk->sk_rcvbuf = sk->sk_rcvbuf; 9468 newsk->sk_rcvbuf = sk->sk_rcvbuf;
9487 newsk->sk_lingertime = sk->sk_lingert 9469 newsk->sk_lingertime = sk->sk_lingertime;
9488 newsk->sk_rcvtimeo = sk->sk_rcvtimeo; 9470 newsk->sk_rcvtimeo = sk->sk_rcvtimeo;
9489 newsk->sk_sndtimeo = sk->sk_sndtimeo; 9471 newsk->sk_sndtimeo = sk->sk_sndtimeo;
9490 newsk->sk_rxhash = sk->sk_rxhash; 9472 newsk->sk_rxhash = sk->sk_rxhash;
9491 9473
9492 newinet = inet_sk(newsk); 9474 newinet = inet_sk(newsk);
9493 9475
9494 /* Initialize sk's sport, dport, rcv_ 9476 /* Initialize sk's sport, dport, rcv_saddr and daddr for
9495 * getsockname() and getpeername() 9477 * getsockname() and getpeername()
9496 */ 9478 */
9497 newinet->inet_sport = inet->inet_spor 9479 newinet->inet_sport = inet->inet_sport;
9498 newinet->inet_saddr = inet->inet_sadd 9480 newinet->inet_saddr = inet->inet_saddr;
9499 newinet->inet_rcv_saddr = inet->inet_ 9481 newinet->inet_rcv_saddr = inet->inet_rcv_saddr;
9500 newinet->inet_dport = htons(asoc->pee 9482 newinet->inet_dport = htons(asoc->peer.port);
9501 newinet->pmtudisc = inet->pmtudisc; 9483 newinet->pmtudisc = inet->pmtudisc;
9502 atomic_set(&newinet->inet_id, get_ran 9484 atomic_set(&newinet->inet_id, get_random_u16());
9503 9485
9504 newinet->uc_ttl = inet->uc_ttl; 9486 newinet->uc_ttl = inet->uc_ttl;
9505 inet_set_bit(MC_LOOP, newsk); 9487 inet_set_bit(MC_LOOP, newsk);
9506 newinet->mc_ttl = 1; 9488 newinet->mc_ttl = 1;
9507 newinet->mc_index = 0; 9489 newinet->mc_index = 0;
9508 newinet->mc_list = NULL; 9490 newinet->mc_list = NULL;
9509 9491
9510 if (newsk->sk_flags & SK_FLAGS_TIMEST 9492 if (newsk->sk_flags & SK_FLAGS_TIMESTAMP)
9511 net_enable_timestamp(); 9493 net_enable_timestamp();
9512 9494
9513 /* Set newsk security attributes from 9495 /* Set newsk security attributes from original sk and connection
9514 * security attribute from asoc. 9496 * security attribute from asoc.
9515 */ 9497 */
9516 security_sctp_sk_clone(asoc, sk, news 9498 security_sctp_sk_clone(asoc, sk, newsk);
9517 } 9499 }
9518 9500
9519 static inline void sctp_copy_descendant(struc 9501 static inline void sctp_copy_descendant(struct sock *sk_to,
9520 const 9502 const struct sock *sk_from)
9521 { 9503 {
9522 size_t ancestor_size = sizeof(struct 9504 size_t ancestor_size = sizeof(struct inet_sock);
9523 9505
9524 ancestor_size += sk_from->sk_prot->ob 9506 ancestor_size += sk_from->sk_prot->obj_size;
9525 ancestor_size -= offsetof(struct sctp 9507 ancestor_size -= offsetof(struct sctp_sock, pd_lobby);
9526 __inet_sk_copy_descendant(sk_to, sk_f 9508 __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
9527 } 9509 }
9528 9510
9529 /* Populate the fields of the newsk from the 9511 /* Populate the fields of the newsk from the oldsk and migrate the assoc
9530 * and its messages to the newsk. 9512 * and its messages to the newsk.
9531 */ 9513 */
9532 static int sctp_sock_migrate(struct sock *old 9514 static int sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
9533 struct sctp_asso 9515 struct sctp_association *assoc,
9534 enum sctp_socket 9516 enum sctp_socket_type type)
9535 { 9517 {
9536 struct sctp_sock *oldsp = sctp_sk(old 9518 struct sctp_sock *oldsp = sctp_sk(oldsk);
9537 struct sctp_sock *newsp = sctp_sk(new 9519 struct sctp_sock *newsp = sctp_sk(newsk);
9538 struct sctp_bind_bucket *pp; /* hash 9520 struct sctp_bind_bucket *pp; /* hash list port iterator */
9539 struct sctp_endpoint *newep = newsp-> 9521 struct sctp_endpoint *newep = newsp->ep;
9540 struct sk_buff *skb, *tmp; 9522 struct sk_buff *skb, *tmp;
9541 struct sctp_ulpevent *event; 9523 struct sctp_ulpevent *event;
9542 struct sctp_bind_hashbucket *head; 9524 struct sctp_bind_hashbucket *head;
9543 int err; 9525 int err;
9544 9526
9545 /* Migrate socket buffer sizes and al 9527 /* Migrate socket buffer sizes and all the socket level options to the
9546 * new socket. 9528 * new socket.
9547 */ 9529 */
9548 newsk->sk_sndbuf = oldsk->sk_sndbuf; 9530 newsk->sk_sndbuf = oldsk->sk_sndbuf;
9549 newsk->sk_rcvbuf = oldsk->sk_rcvbuf; 9531 newsk->sk_rcvbuf = oldsk->sk_rcvbuf;
9550 /* Brute force copy old sctp opt. */ 9532 /* Brute force copy old sctp opt. */
9551 sctp_copy_descendant(newsk, oldsk); 9533 sctp_copy_descendant(newsk, oldsk);
9552 9534
9553 /* Restore the ep value that was over 9535 /* Restore the ep value that was overwritten with the above structure
9554 * copy. 9536 * copy.
9555 */ 9537 */
9556 newsp->ep = newep; 9538 newsp->ep = newep;
9557 newsp->hmac = NULL; 9539 newsp->hmac = NULL;
9558 9540
9559 /* Hook this new socket in to the bin 9541 /* Hook this new socket in to the bind_hash list. */
9560 head = &sctp_port_hashtable[sctp_phas 9542 head = &sctp_port_hashtable[sctp_phashfn(sock_net(oldsk),
9561 9543 inet_sk(oldsk)->inet_num)];
9562 spin_lock_bh(&head->lock); 9544 spin_lock_bh(&head->lock);
9563 pp = sctp_sk(oldsk)->bind_hash; 9545 pp = sctp_sk(oldsk)->bind_hash;
9564 sk_add_bind_node(newsk, &pp->owner); 9546 sk_add_bind_node(newsk, &pp->owner);
9565 sctp_sk(newsk)->bind_hash = pp; 9547 sctp_sk(newsk)->bind_hash = pp;
9566 inet_sk(newsk)->inet_num = inet_sk(ol 9548 inet_sk(newsk)->inet_num = inet_sk(oldsk)->inet_num;
9567 spin_unlock_bh(&head->lock); 9549 spin_unlock_bh(&head->lock);
9568 9550
9569 /* Copy the bind_addr list from the o 9551 /* Copy the bind_addr list from the original endpoint to the new
9570 * endpoint so that we can handle res 9552 * endpoint so that we can handle restarts properly
9571 */ 9553 */
9572 err = sctp_bind_addr_dup(&newsp->ep-> 9554 err = sctp_bind_addr_dup(&newsp->ep->base.bind_addr,
9573 &oldsp->ep-> 9555 &oldsp->ep->base.bind_addr, GFP_KERNEL);
9574 if (err) 9556 if (err)
9575 return err; 9557 return err;
9576 9558
9577 /* New ep's auth_hmacs should be set 9559 /* New ep's auth_hmacs should be set if old ep's is set, in case
9578 * that net->sctp.auth_enable has bee 9560 * that net->sctp.auth_enable has been changed to 0 by users and
9579 * new ep's auth_hmacs couldn't be se 9561 * new ep's auth_hmacs couldn't be set in sctp_endpoint_init().
9580 */ 9562 */
9581 if (oldsp->ep->auth_hmacs) { 9563 if (oldsp->ep->auth_hmacs) {
9582 err = sctp_auth_init_hmacs(ne 9564 err = sctp_auth_init_hmacs(newsp->ep, GFP_KERNEL);
9583 if (err) 9565 if (err)
9584 return err; 9566 return err;
9585 } 9567 }
9586 9568
9587 sctp_auto_asconf_init(newsp); 9569 sctp_auto_asconf_init(newsp);
9588 9570
9589 /* Move any messages in the old socke 9571 /* Move any messages in the old socket's receive queue that are for the
9590 * peeled off association to the new 9572 * peeled off association to the new socket's receive queue.
9591 */ 9573 */
9592 sctp_skb_for_each(skb, &oldsk->sk_rec 9574 sctp_skb_for_each(skb, &oldsk->sk_receive_queue, tmp) {
9593 event = sctp_skb2event(skb); 9575 event = sctp_skb2event(skb);
9594 if (event->asoc == assoc) { 9576 if (event->asoc == assoc) {
9595 __skb_unlink(skb, &ol 9577 __skb_unlink(skb, &oldsk->sk_receive_queue);
9596 __skb_queue_tail(&new 9578 __skb_queue_tail(&newsk->sk_receive_queue, skb);
9597 sctp_skb_set_owner_r_ 9579 sctp_skb_set_owner_r_frag(skb, newsk);
9598 } 9580 }
9599 } 9581 }
9600 9582
9601 /* Clean up any messages pending deli 9583 /* Clean up any messages pending delivery due to partial
9602 * delivery. Three cases: 9584 * delivery. Three cases:
9603 * 1) No partial deliver; no work. 9585 * 1) No partial deliver; no work.
9604 * 2) Peeling off partial delivery; k 9586 * 2) Peeling off partial delivery; keep pd_lobby in new pd_lobby.
9605 * 3) Peeling off non-partial deliver 9587 * 3) Peeling off non-partial delivery; move pd_lobby to receive_queue.
9606 */ 9588 */
9607 atomic_set(&sctp_sk(newsk)->pd_mode, 9589 atomic_set(&sctp_sk(newsk)->pd_mode, assoc->ulpq.pd_mode);
9608 9590
9609 if (atomic_read(&sctp_sk(oldsk)->pd_m 9591 if (atomic_read(&sctp_sk(oldsk)->pd_mode)) {
9610 struct sk_buff_head *queue; 9592 struct sk_buff_head *queue;
9611 9593
9612 /* Decide which queue to move 9594 /* Decide which queue to move pd_lobby skbs to. */
9613 if (assoc->ulpq.pd_mode) { 9595 if (assoc->ulpq.pd_mode) {
9614 queue = &newsp->pd_lo 9596 queue = &newsp->pd_lobby;
9615 } else 9597 } else
9616 queue = &newsk->sk_re 9598 queue = &newsk->sk_receive_queue;
9617 9599
9618 /* Walk through the pd_lobby, 9600 /* Walk through the pd_lobby, looking for skbs that
9619 * need moved to the new sock 9601 * need moved to the new socket.
9620 */ 9602 */
9621 sctp_skb_for_each(skb, &oldsp 9603 sctp_skb_for_each(skb, &oldsp->pd_lobby, tmp) {
9622 event = sctp_skb2even 9604 event = sctp_skb2event(skb);
9623 if (event->asoc == as 9605 if (event->asoc == assoc) {
9624 __skb_unlink( 9606 __skb_unlink(skb, &oldsp->pd_lobby);
9625 __skb_queue_t 9607 __skb_queue_tail(queue, skb);
9626 sctp_skb_set_ 9608 sctp_skb_set_owner_r_frag(skb, newsk);
9627 } 9609 }
9628 } 9610 }
9629 9611
9630 /* Clear up any skbs waiting 9612 /* Clear up any skbs waiting for the partial
9631 * delivery to finish. 9613 * delivery to finish.
9632 */ 9614 */
9633 if (assoc->ulpq.pd_mode) 9615 if (assoc->ulpq.pd_mode)
9634 sctp_clear_pd(oldsk, 9616 sctp_clear_pd(oldsk, NULL);
9635 9617
9636 } 9618 }
9637 9619
9638 sctp_for_each_rx_skb(assoc, newsk, sc 9620 sctp_for_each_rx_skb(assoc, newsk, sctp_skb_set_owner_r_frag);
9639 9621
9640 /* Set the type of socket to indicate 9622 /* Set the type of socket to indicate that it is peeled off from the
9641 * original UDP-style socket or creat 9623 * original UDP-style socket or created with the accept() call on a
9642 * TCP-style socket.. 9624 * TCP-style socket..
9643 */ 9625 */
9644 newsp->type = type; 9626 newsp->type = type;
9645 9627
9646 /* Mark the new socket "in-use" by th 9628 /* Mark the new socket "in-use" by the user so that any packets
9647 * that may arrive on the association 9629 * that may arrive on the association after we've moved it are
9648 * queued to the backlog. This preve 9630 * queued to the backlog. This prevents a potential race between
9649 * backlog processing on the old sock 9631 * backlog processing on the old socket and new-packet processing
9650 * on the new socket. 9632 * on the new socket.
9651 * 9633 *
9652 * The caller has just allocated news 9634 * The caller has just allocated newsk so we can guarantee that other
9653 * paths won't try to lock it and the 9635 * paths won't try to lock it and then oldsk.
9654 */ 9636 */
9655 lock_sock_nested(newsk, SINGLE_DEPTH_ 9637 lock_sock_nested(newsk, SINGLE_DEPTH_NESTING);
9656 sctp_for_each_tx_datachunk(assoc, tru 9638 sctp_for_each_tx_datachunk(assoc, true, sctp_clear_owner_w);
9657 sctp_assoc_migrate(assoc, newsk); 9639 sctp_assoc_migrate(assoc, newsk);
9658 sctp_for_each_tx_datachunk(assoc, fal 9640 sctp_for_each_tx_datachunk(assoc, false, sctp_set_owner_w);
9659 9641
9660 /* If the association on the newsk is 9642 /* If the association on the newsk is already closed before accept()
9661 * is called, set RCV_SHUTDOWN flag. 9643 * is called, set RCV_SHUTDOWN flag.
9662 */ 9644 */
9663 if (sctp_state(assoc, CLOSED) && sctp 9645 if (sctp_state(assoc, CLOSED) && sctp_style(newsk, TCP)) {
9664 inet_sk_set_state(newsk, SCTP 9646 inet_sk_set_state(newsk, SCTP_SS_CLOSED);
9665 newsk->sk_shutdown |= RCV_SHU 9647 newsk->sk_shutdown |= RCV_SHUTDOWN;
9666 } else { 9648 } else {
9667 inet_sk_set_state(newsk, SCTP 9649 inet_sk_set_state(newsk, SCTP_SS_ESTABLISHED);
9668 } 9650 }
9669 9651
9670 release_sock(newsk); 9652 release_sock(newsk);
9671 9653
9672 return 0; 9654 return 0;
9673 } 9655 }
9674 9656
9675 9657
9676 /* This proto struct describes the ULP interf 9658 /* This proto struct describes the ULP interface for SCTP. */
9677 struct proto sctp_prot = { 9659 struct proto sctp_prot = {
9678 .name = "SCTP", 9660 .name = "SCTP",
9679 .owner = THIS_MODULE, 9661 .owner = THIS_MODULE,
9680 .close = sctp_close, 9662 .close = sctp_close,
9681 .disconnect = sctp_disconnect, 9663 .disconnect = sctp_disconnect,
9682 .accept = sctp_accept, 9664 .accept = sctp_accept,
9683 .ioctl = sctp_ioctl, 9665 .ioctl = sctp_ioctl,
9684 .init = sctp_init_sock, 9666 .init = sctp_init_sock,
9685 .destroy = sctp_destroy_sock, 9667 .destroy = sctp_destroy_sock,
9686 .shutdown = sctp_shutdown, 9668 .shutdown = sctp_shutdown,
9687 .setsockopt = sctp_setsockopt, 9669 .setsockopt = sctp_setsockopt,
9688 .getsockopt = sctp_getsockopt, 9670 .getsockopt = sctp_getsockopt,
9689 .bpf_bypass_getsockopt = sctp_bpf_by 9671 .bpf_bypass_getsockopt = sctp_bpf_bypass_getsockopt,
9690 .sendmsg = sctp_sendmsg, 9672 .sendmsg = sctp_sendmsg,
9691 .recvmsg = sctp_recvmsg, 9673 .recvmsg = sctp_recvmsg,
9692 .bind = sctp_bind, 9674 .bind = sctp_bind,
9693 .bind_add = sctp_bind_add, 9675 .bind_add = sctp_bind_add,
9694 .backlog_rcv = sctp_backlog_rcv, 9676 .backlog_rcv = sctp_backlog_rcv,
9695 .hash = sctp_hash, 9677 .hash = sctp_hash,
9696 .unhash = sctp_unhash, 9678 .unhash = sctp_unhash,
9697 .no_autobind = true, 9679 .no_autobind = true,
9698 .obj_size = sizeof(struct sctp_so 9680 .obj_size = sizeof(struct sctp_sock),
9699 .useroffset = offsetof(struct sctp_ 9681 .useroffset = offsetof(struct sctp_sock, subscribe),
9700 .usersize = offsetof(struct sctp_ 9682 .usersize = offsetof(struct sctp_sock, initmsg) -
9701 offsetof(stru 9683 offsetof(struct sctp_sock, subscribe) +
9702 sizeof_field( 9684 sizeof_field(struct sctp_sock, initmsg),
9703 .sysctl_mem = sysctl_sctp_mem, 9685 .sysctl_mem = sysctl_sctp_mem,
9704 .sysctl_rmem = sysctl_sctp_rmem, 9686 .sysctl_rmem = sysctl_sctp_rmem,
9705 .sysctl_wmem = sysctl_sctp_wmem, 9687 .sysctl_wmem = sysctl_sctp_wmem,
9706 .memory_pressure = &sctp_memory_press 9688 .memory_pressure = &sctp_memory_pressure,
9707 .enter_memory_pressure = sctp_enter_m 9689 .enter_memory_pressure = sctp_enter_memory_pressure,
9708 9690
9709 .memory_allocated = &sctp_memory_allo 9691 .memory_allocated = &sctp_memory_allocated,
9710 .per_cpu_fw_alloc = &sctp_memory_per_ 9692 .per_cpu_fw_alloc = &sctp_memory_per_cpu_fw_alloc,
9711 9693
9712 .sockets_allocated = &sctp_sockets_al 9694 .sockets_allocated = &sctp_sockets_allocated,
9713 }; 9695 };
9714 9696
9715 #if IS_ENABLED(CONFIG_IPV6) 9697 #if IS_ENABLED(CONFIG_IPV6)
9716 9698
9717 static void sctp_v6_destruct_sock(struct sock 9699 static void sctp_v6_destruct_sock(struct sock *sk)
9718 { 9700 {
9719 sctp_destruct_common(sk); 9701 sctp_destruct_common(sk);
9720 inet6_sock_destruct(sk); 9702 inet6_sock_destruct(sk);
9721 } 9703 }
9722 9704
9723 static int sctp_v6_init_sock(struct sock *sk) 9705 static int sctp_v6_init_sock(struct sock *sk)
9724 { 9706 {
9725 int ret = sctp_init_sock(sk); 9707 int ret = sctp_init_sock(sk);
9726 9708
9727 if (!ret) 9709 if (!ret)
9728 sk->sk_destruct = sctp_v6_des 9710 sk->sk_destruct = sctp_v6_destruct_sock;
9729 9711
9730 return ret; 9712 return ret;
9731 } 9713 }
9732 9714
9733 struct proto sctpv6_prot = { 9715 struct proto sctpv6_prot = {
9734 .name = "SCTPv6", 9716 .name = "SCTPv6",
9735 .owner = THIS_MODULE, 9717 .owner = THIS_MODULE,
9736 .close = sctp_close, 9718 .close = sctp_close,
9737 .disconnect = sctp_disconnect, 9719 .disconnect = sctp_disconnect,
9738 .accept = sctp_accept, 9720 .accept = sctp_accept,
9739 .ioctl = sctp_ioctl, 9721 .ioctl = sctp_ioctl,
9740 .init = sctp_v6_init_sock, 9722 .init = sctp_v6_init_sock,
9741 .destroy = sctp_destroy_sock, 9723 .destroy = sctp_destroy_sock,
9742 .shutdown = sctp_shutdown, 9724 .shutdown = sctp_shutdown,
9743 .setsockopt = sctp_setsockopt, 9725 .setsockopt = sctp_setsockopt,
9744 .getsockopt = sctp_getsockopt, 9726 .getsockopt = sctp_getsockopt,
9745 .bpf_bypass_getsockopt = sctp_bpf_by 9727 .bpf_bypass_getsockopt = sctp_bpf_bypass_getsockopt,
9746 .sendmsg = sctp_sendmsg, 9728 .sendmsg = sctp_sendmsg,
9747 .recvmsg = sctp_recvmsg, 9729 .recvmsg = sctp_recvmsg,
9748 .bind = sctp_bind, 9730 .bind = sctp_bind,
9749 .bind_add = sctp_bind_add, 9731 .bind_add = sctp_bind_add,
9750 .backlog_rcv = sctp_backlog_rcv, 9732 .backlog_rcv = sctp_backlog_rcv,
9751 .hash = sctp_hash, 9733 .hash = sctp_hash,
9752 .unhash = sctp_unhash, 9734 .unhash = sctp_unhash,
9753 .no_autobind = true, 9735 .no_autobind = true,
9754 .obj_size = sizeof(struct sctp6 9736 .obj_size = sizeof(struct sctp6_sock),
9755 .ipv6_pinfo_offset = offsetof(struct 9737 .ipv6_pinfo_offset = offsetof(struct sctp6_sock, inet6),
9756 .useroffset = offsetof(struct sct 9738 .useroffset = offsetof(struct sctp6_sock, sctp.subscribe),
9757 .usersize = offsetof(struct sct 9739 .usersize = offsetof(struct sctp6_sock, sctp.initmsg) -
9758 offsetof(stru 9740 offsetof(struct sctp6_sock, sctp.subscribe) +
9759 sizeof_field( 9741 sizeof_field(struct sctp6_sock, sctp.initmsg),
9760 .sysctl_mem = sysctl_sctp_mem, 9742 .sysctl_mem = sysctl_sctp_mem,
9761 .sysctl_rmem = sysctl_sctp_rmem, 9743 .sysctl_rmem = sysctl_sctp_rmem,
9762 .sysctl_wmem = sysctl_sctp_wmem, 9744 .sysctl_wmem = sysctl_sctp_wmem,
9763 .memory_pressure = &sctp_memory_press 9745 .memory_pressure = &sctp_memory_pressure,
9764 .enter_memory_pressure = sctp_enter_m 9746 .enter_memory_pressure = sctp_enter_memory_pressure,
9765 9747
9766 .memory_allocated = &sctp_memory_allo 9748 .memory_allocated = &sctp_memory_allocated,
9767 .per_cpu_fw_alloc = &sctp_memory_per_ 9749 .per_cpu_fw_alloc = &sctp_memory_per_cpu_fw_alloc,
9768 9750
9769 .sockets_allocated = &sctp_sockets_al 9751 .sockets_allocated = &sctp_sockets_allocated,
9770 }; 9752 };
9771 #endif /* IS_ENABLED(CONFIG_IPV6) */ 9753 #endif /* IS_ENABLED(CONFIG_IPV6) */
9772 9754
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