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 Red Hat Inc. 2017 3 * (C) Copyright Red Hat Inc. 2017
4 * 4 *
5 * This file is part of the SCTP kernel implem 5 * This file is part of the SCTP kernel implementation
6 * 6 *
7 * These functions implement sctp diag support 7 * These functions implement sctp diag support.
8 * 8 *
9 * Please send any bug reports or fixes you ma 9 * Please send any bug reports or fixes you make to the
10 * email addresched(es): 10 * email addresched(es):
11 * lksctp developers <linux-sctp@vger.kerne 11 * lksctp developers <linux-sctp@vger.kernel.org>
12 * 12 *
13 * Written or modified by: 13 * Written or modified by:
14 * Xin Long <lucien.xin@gmail.com> 14 * Xin Long <lucien.xin@gmail.com>
15 */ 15 */
16 16
17 #include <linux/module.h> 17 #include <linux/module.h>
18 #include <linux/inet_diag.h> 18 #include <linux/inet_diag.h>
19 #include <linux/sock_diag.h> 19 #include <linux/sock_diag.h>
20 #include <net/sctp/sctp.h> 20 #include <net/sctp/sctp.h>
21 21
22 static void sctp_diag_get_info(struct sock *sk 22 static void sctp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
23 void *info); 23 void *info);
24 24
25 /* define some functions to make asoc/ep fill 25 /* define some functions to make asoc/ep fill look clean */
26 static void inet_diag_msg_sctpasoc_fill(struct 26 static void inet_diag_msg_sctpasoc_fill(struct inet_diag_msg *r,
27 struct 27 struct sock *sk,
28 struct 28 struct sctp_association *asoc)
29 { 29 {
30 union sctp_addr laddr, paddr; 30 union sctp_addr laddr, paddr;
31 struct dst_entry *dst; 31 struct dst_entry *dst;
32 struct timer_list *t3_rtx = &asoc->pee 32 struct timer_list *t3_rtx = &asoc->peer.primary_path->T3_rtx_timer;
33 33
34 laddr = list_entry(asoc->base.bind_add 34 laddr = list_entry(asoc->base.bind_addr.address_list.next,
35 struct sctp_sockadd 35 struct sctp_sockaddr_entry, list)->a;
36 paddr = asoc->peer.primary_path->ipadd 36 paddr = asoc->peer.primary_path->ipaddr;
37 dst = asoc->peer.primary_path->dst; 37 dst = asoc->peer.primary_path->dst;
38 38
39 r->idiag_family = sk->sk_family; 39 r->idiag_family = sk->sk_family;
40 r->id.idiag_sport = htons(asoc->base.b 40 r->id.idiag_sport = htons(asoc->base.bind_addr.port);
41 r->id.idiag_dport = htons(asoc->peer.p 41 r->id.idiag_dport = htons(asoc->peer.port);
42 r->id.idiag_if = dst ? dst->dev->ifind 42 r->id.idiag_if = dst ? dst->dev->ifindex : 0;
43 sock_diag_save_cookie(sk, r->id.idiag_ 43 sock_diag_save_cookie(sk, r->id.idiag_cookie);
44 44
45 #if IS_ENABLED(CONFIG_IPV6) 45 #if IS_ENABLED(CONFIG_IPV6)
46 if (sk->sk_family == AF_INET6) { 46 if (sk->sk_family == AF_INET6) {
47 *(struct in6_addr *)r->id.idia 47 *(struct in6_addr *)r->id.idiag_src = laddr.v6.sin6_addr;
48 *(struct in6_addr *)r->id.idia 48 *(struct in6_addr *)r->id.idiag_dst = paddr.v6.sin6_addr;
49 } else 49 } else
50 #endif 50 #endif
51 { 51 {
52 memset(&r->id.idiag_src, 0, si 52 memset(&r->id.idiag_src, 0, sizeof(r->id.idiag_src));
53 memset(&r->id.idiag_dst, 0, si 53 memset(&r->id.idiag_dst, 0, sizeof(r->id.idiag_dst));
54 54
55 r->id.idiag_src[0] = laddr.v4. 55 r->id.idiag_src[0] = laddr.v4.sin_addr.s_addr;
56 r->id.idiag_dst[0] = paddr.v4. 56 r->id.idiag_dst[0] = paddr.v4.sin_addr.s_addr;
57 } 57 }
58 58
59 r->idiag_state = asoc->state; 59 r->idiag_state = asoc->state;
60 if (timer_pending(t3_rtx)) { 60 if (timer_pending(t3_rtx)) {
61 r->idiag_timer = SCTP_EVENT_TI 61 r->idiag_timer = SCTP_EVENT_TIMEOUT_T3_RTX;
62 r->idiag_retrans = asoc->rtx_d 62 r->idiag_retrans = asoc->rtx_data_chunks;
63 r->idiag_expires = jiffies_to_ 63 r->idiag_expires = jiffies_to_msecs(t3_rtx->expires - jiffies);
64 } 64 }
65 } 65 }
66 66
67 static int inet_diag_msg_sctpladdrs_fill(struc 67 static int inet_diag_msg_sctpladdrs_fill(struct sk_buff *skb,
68 struc 68 struct list_head *address_list)
69 { 69 {
70 struct sctp_sockaddr_entry *laddr; 70 struct sctp_sockaddr_entry *laddr;
71 int addrlen = sizeof(struct sockaddr_s 71 int addrlen = sizeof(struct sockaddr_storage);
72 int addrcnt = 0; 72 int addrcnt = 0;
73 struct nlattr *attr; 73 struct nlattr *attr;
74 void *info = NULL; 74 void *info = NULL;
75 75
76 list_for_each_entry_rcu(laddr, address 76 list_for_each_entry_rcu(laddr, address_list, list)
77 addrcnt++; 77 addrcnt++;
78 78
79 attr = nla_reserve(skb, INET_DIAG_LOCA 79 attr = nla_reserve(skb, INET_DIAG_LOCALS, addrlen * addrcnt);
80 if (!attr) 80 if (!attr)
81 return -EMSGSIZE; 81 return -EMSGSIZE;
82 82
83 info = nla_data(attr); 83 info = nla_data(attr);
84 list_for_each_entry_rcu(laddr, address 84 list_for_each_entry_rcu(laddr, address_list, list) {
85 memcpy(info, &laddr->a, sizeof 85 memcpy(info, &laddr->a, sizeof(laddr->a));
86 memset(info + sizeof(laddr->a) 86 memset(info + sizeof(laddr->a), 0, addrlen - sizeof(laddr->a));
87 info += addrlen; 87 info += addrlen;
88 } 88 }
89 89
90 return 0; 90 return 0;
91 } 91 }
92 92
93 static int inet_diag_msg_sctpaddrs_fill(struct 93 static int inet_diag_msg_sctpaddrs_fill(struct sk_buff *skb,
94 struct 94 struct sctp_association *asoc)
95 { 95 {
96 int addrlen = sizeof(struct sockaddr_s 96 int addrlen = sizeof(struct sockaddr_storage);
97 struct sctp_transport *from; 97 struct sctp_transport *from;
98 struct nlattr *attr; 98 struct nlattr *attr;
99 void *info = NULL; 99 void *info = NULL;
100 100
101 attr = nla_reserve(skb, INET_DIAG_PEER 101 attr = nla_reserve(skb, INET_DIAG_PEERS,
102 addrlen * asoc->pee 102 addrlen * asoc->peer.transport_count);
103 if (!attr) 103 if (!attr)
104 return -EMSGSIZE; 104 return -EMSGSIZE;
105 105
106 info = nla_data(attr); 106 info = nla_data(attr);
107 list_for_each_entry(from, &asoc->peer. 107 list_for_each_entry(from, &asoc->peer.transport_addr_list,
108 transports) { 108 transports) {
109 memcpy(info, &from->ipaddr, si 109 memcpy(info, &from->ipaddr, sizeof(from->ipaddr));
110 memset(info + sizeof(from->ipa 110 memset(info + sizeof(from->ipaddr), 0,
111 addrlen - sizeof(from-> 111 addrlen - sizeof(from->ipaddr));
112 info += addrlen; 112 info += addrlen;
113 } 113 }
114 114
115 return 0; 115 return 0;
116 } 116 }
117 117
118 /* sctp asoc/ep fill*/ 118 /* sctp asoc/ep fill*/
119 static int inet_sctp_diag_fill(struct sock *sk 119 static int inet_sctp_diag_fill(struct sock *sk, struct sctp_association *asoc,
120 struct sk_buff 120 struct sk_buff *skb,
121 const struct in 121 const struct inet_diag_req_v2 *req,
122 struct user_nam 122 struct user_namespace *user_ns,
123 int portid, u32 123 int portid, u32 seq, u16 nlmsg_flags,
124 const struct nl 124 const struct nlmsghdr *unlh,
125 bool net_admin) 125 bool net_admin)
126 { 126 {
127 struct sctp_endpoint *ep = sctp_sk(sk) 127 struct sctp_endpoint *ep = sctp_sk(sk)->ep;
128 struct list_head *addr_list; 128 struct list_head *addr_list;
129 struct inet_diag_msg *r; 129 struct inet_diag_msg *r;
130 struct nlmsghdr *nlh; 130 struct nlmsghdr *nlh;
131 int ext = req->idiag_ext; 131 int ext = req->idiag_ext;
132 struct sctp_infox infox; 132 struct sctp_infox infox;
133 void *info = NULL; 133 void *info = NULL;
134 134
135 nlh = nlmsg_put(skb, portid, seq, unlh 135 nlh = nlmsg_put(skb, portid, seq, unlh->nlmsg_type, sizeof(*r),
136 nlmsg_flags); 136 nlmsg_flags);
137 if (!nlh) 137 if (!nlh)
138 return -EMSGSIZE; 138 return -EMSGSIZE;
139 139
140 r = nlmsg_data(nlh); 140 r = nlmsg_data(nlh);
141 BUG_ON(!sk_fullsock(sk)); 141 BUG_ON(!sk_fullsock(sk));
142 142
143 r->idiag_timer = 0; 143 r->idiag_timer = 0;
144 r->idiag_retrans = 0; 144 r->idiag_retrans = 0;
145 r->idiag_expires = 0; 145 r->idiag_expires = 0;
146 if (asoc) { 146 if (asoc) {
147 inet_diag_msg_sctpasoc_fill(r, 147 inet_diag_msg_sctpasoc_fill(r, sk, asoc);
148 } else { 148 } else {
149 inet_diag_msg_common_fill(r, s 149 inet_diag_msg_common_fill(r, sk);
150 r->idiag_state = sk->sk_state; 150 r->idiag_state = sk->sk_state;
151 } 151 }
152 152
153 if (inet_diag_msg_attrs_fill(sk, skb, 153 if (inet_diag_msg_attrs_fill(sk, skb, r, ext, user_ns, net_admin))
154 goto errout; 154 goto errout;
155 155
156 if (ext & (1 << (INET_DIAG_SKMEMINFO - 156 if (ext & (1 << (INET_DIAG_SKMEMINFO - 1))) {
157 u32 mem[SK_MEMINFO_VARS]; 157 u32 mem[SK_MEMINFO_VARS];
158 int amt; 158 int amt;
159 159
160 if (asoc && asoc->ep->sndbuf_p 160 if (asoc && asoc->ep->sndbuf_policy)
161 amt = asoc->sndbuf_use 161 amt = asoc->sndbuf_used;
162 else 162 else
163 amt = sk_wmem_alloc_ge 163 amt = sk_wmem_alloc_get(sk);
164 mem[SK_MEMINFO_WMEM_ALLOC] = a 164 mem[SK_MEMINFO_WMEM_ALLOC] = amt;
165 if (asoc && asoc->ep->rcvbuf_p 165 if (asoc && asoc->ep->rcvbuf_policy)
166 amt = atomic_read(&aso 166 amt = atomic_read(&asoc->rmem_alloc);
167 else 167 else
168 amt = sk_rmem_alloc_ge 168 amt = sk_rmem_alloc_get(sk);
169 mem[SK_MEMINFO_RMEM_ALLOC] = a 169 mem[SK_MEMINFO_RMEM_ALLOC] = amt;
170 mem[SK_MEMINFO_RCVBUF] = sk->s 170 mem[SK_MEMINFO_RCVBUF] = sk->sk_rcvbuf;
171 mem[SK_MEMINFO_SNDBUF] = sk->s 171 mem[SK_MEMINFO_SNDBUF] = sk->sk_sndbuf;
172 mem[SK_MEMINFO_FWD_ALLOC] = sk 172 mem[SK_MEMINFO_FWD_ALLOC] = sk->sk_forward_alloc;
173 mem[SK_MEMINFO_WMEM_QUEUED] = 173 mem[SK_MEMINFO_WMEM_QUEUED] = sk->sk_wmem_queued;
174 mem[SK_MEMINFO_OPTMEM] = atomi 174 mem[SK_MEMINFO_OPTMEM] = atomic_read(&sk->sk_omem_alloc);
175 mem[SK_MEMINFO_BACKLOG] = READ 175 mem[SK_MEMINFO_BACKLOG] = READ_ONCE(sk->sk_backlog.len);
176 mem[SK_MEMINFO_DROPS] = atomic 176 mem[SK_MEMINFO_DROPS] = atomic_read(&sk->sk_drops);
177 177
178 if (nla_put(skb, INET_DIAG_SKM 178 if (nla_put(skb, INET_DIAG_SKMEMINFO, sizeof(mem), &mem) < 0)
179 goto errout; 179 goto errout;
180 } 180 }
181 181
182 if (ext & (1 << (INET_DIAG_INFO - 1))) 182 if (ext & (1 << (INET_DIAG_INFO - 1))) {
183 struct nlattr *attr; 183 struct nlattr *attr;
184 184
185 attr = nla_reserve_64bit(skb, 185 attr = nla_reserve_64bit(skb, INET_DIAG_INFO,
186 sizeo 186 sizeof(struct sctp_info),
187 INET_ 187 INET_DIAG_PAD);
188 if (!attr) 188 if (!attr)
189 goto errout; 189 goto errout;
190 190
191 info = nla_data(attr); 191 info = nla_data(attr);
192 } 192 }
193 infox.sctpinfo = (struct sctp_info *)i 193 infox.sctpinfo = (struct sctp_info *)info;
194 infox.asoc = asoc; 194 infox.asoc = asoc;
195 sctp_diag_get_info(sk, r, &infox); 195 sctp_diag_get_info(sk, r, &infox);
196 196
197 addr_list = asoc ? &asoc->base.bind_ad 197 addr_list = asoc ? &asoc->base.bind_addr.address_list
198 : &ep->base.bind_addr 198 : &ep->base.bind_addr.address_list;
199 if (inet_diag_msg_sctpladdrs_fill(skb, 199 if (inet_diag_msg_sctpladdrs_fill(skb, addr_list))
200 goto errout; 200 goto errout;
201 201
202 if (asoc && (ext & (1 << (INET_DIAG_CO 202 if (asoc && (ext & (1 << (INET_DIAG_CONG - 1))))
203 if (nla_put_string(skb, INET_D 203 if (nla_put_string(skb, INET_DIAG_CONG, "reno") < 0)
204 goto errout; 204 goto errout;
205 205
206 if (asoc && inet_diag_msg_sctpaddrs_fi 206 if (asoc && inet_diag_msg_sctpaddrs_fill(skb, asoc))
207 goto errout; 207 goto errout;
208 208
209 nlmsg_end(skb, nlh); 209 nlmsg_end(skb, nlh);
210 return 0; 210 return 0;
211 211
212 errout: 212 errout:
213 nlmsg_cancel(skb, nlh); 213 nlmsg_cancel(skb, nlh);
214 return -EMSGSIZE; 214 return -EMSGSIZE;
215 } 215 }
216 216
217 /* callback and param */ 217 /* callback and param */
218 struct sctp_comm_param { 218 struct sctp_comm_param {
219 struct sk_buff *skb; 219 struct sk_buff *skb;
220 struct netlink_callback *cb; 220 struct netlink_callback *cb;
221 const struct inet_diag_req_v2 *r; 221 const struct inet_diag_req_v2 *r;
222 const struct nlmsghdr *nlh; 222 const struct nlmsghdr *nlh;
223 bool net_admin; 223 bool net_admin;
224 }; 224 };
225 225
226 static size_t inet_assoc_attr_size(struct sctp 226 static size_t inet_assoc_attr_size(struct sctp_association *asoc)
227 { 227 {
228 int addrlen = sizeof(struct sockaddr_s 228 int addrlen = sizeof(struct sockaddr_storage);
229 int addrcnt = 0; 229 int addrcnt = 0;
230 struct sctp_sockaddr_entry *laddr; 230 struct sctp_sockaddr_entry *laddr;
231 231
232 list_for_each_entry_rcu(laddr, &asoc-> 232 list_for_each_entry_rcu(laddr, &asoc->base.bind_addr.address_list,
233 list) 233 list)
234 addrcnt++; 234 addrcnt++;
235 235
236 return nla_total_size(sizeof(struct 236 return nla_total_size(sizeof(struct sctp_info))
237 + nla_total_size(addrlen * aso 237 + nla_total_size(addrlen * asoc->peer.transport_count)
238 + nla_total_size(addrlen * add 238 + nla_total_size(addrlen * addrcnt)
239 + nla_total_size(sizeof(struct 239 + nla_total_size(sizeof(struct inet_diag_msg))
240 + inet_diag_msg_attrs_size() 240 + inet_diag_msg_attrs_size()
241 + nla_total_size(sizeof(struct 241 + nla_total_size(sizeof(struct inet_diag_meminfo))
242 + 64; 242 + 64;
243 } 243 }
244 244
245 static int sctp_sock_dump_one(struct sctp_endp !! 245 static int sctp_tsp_dump_one(struct sctp_transport *tsp, void *p)
246 { 246 {
247 struct sctp_association *assoc = tsp-> 247 struct sctp_association *assoc = tsp->asoc;
>> 248 struct sock *sk = tsp->asoc->base.sk;
248 struct sctp_comm_param *commp = p; 249 struct sctp_comm_param *commp = p;
249 struct sock *sk = ep->base.sk; !! 250 struct sk_buff *in_skb = commp->skb;
250 const struct inet_diag_req_v2 *req = c 251 const struct inet_diag_req_v2 *req = commp->r;
251 struct sk_buff *skb = commp->skb; !! 252 const struct nlmsghdr *nlh = commp->nlh;
>> 253 struct net *net = sock_net(in_skb->sk);
252 struct sk_buff *rep; 254 struct sk_buff *rep;
253 int err; 255 int err;
254 256
255 err = sock_diag_check_cookie(sk, req-> 257 err = sock_diag_check_cookie(sk, req->id.idiag_cookie);
256 if (err) 258 if (err)
257 return err; !! 259 goto out;
258 260
>> 261 err = -ENOMEM;
259 rep = nlmsg_new(inet_assoc_attr_size(a 262 rep = nlmsg_new(inet_assoc_attr_size(assoc), GFP_KERNEL);
260 if (!rep) 263 if (!rep)
261 return -ENOMEM; !! 264 goto out;
262 265
263 lock_sock(sk); 266 lock_sock(sk);
264 if (ep != assoc->ep) { !! 267 if (sk != assoc->base.sk) {
265 err = -EAGAIN; !! 268 release_sock(sk);
266 goto out; !! 269 sk = assoc->base.sk;
>> 270 lock_sock(sk);
267 } 271 }
268 !! 272 err = inet_sctp_diag_fill(sk, assoc, rep, req,
269 err = inet_sctp_diag_fill(sk, assoc, r !! 273 sk_user_ns(NETLINK_CB(in_skb).sk),
270 NETLINK_CB(s !! 274 NETLINK_CB(in_skb).portid,
271 commp->nlh, !! 275 nlh->nlmsg_seq, 0, nlh,
>> 276 commp->net_admin);
>> 277 release_sock(sk);
272 if (err < 0) { 278 if (err < 0) {
273 WARN_ON(err == -EMSGSIZE); 279 WARN_ON(err == -EMSGSIZE);
>> 280 kfree_skb(rep);
274 goto out; 281 goto out;
275 } 282 }
276 release_sock(sk); <<
277 <<
278 return nlmsg_unicast(sock_net(skb->sk) <<
279 283
>> 284 err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
>> 285 MSG_DONTWAIT);
>> 286 if (err > 0)
>> 287 err = 0;
280 out: 288 out:
281 release_sock(sk); <<
282 kfree_skb(rep); <<
283 return err; 289 return err;
284 } 290 }
285 291
286 static int sctp_sock_dump(struct sctp_endpoint 292 static int sctp_sock_dump(struct sctp_endpoint *ep, struct sctp_transport *tsp, void *p)
287 { 293 {
288 struct sctp_comm_param *commp = p; 294 struct sctp_comm_param *commp = p;
289 struct sock *sk = ep->base.sk; 295 struct sock *sk = ep->base.sk;
290 struct sk_buff *skb = commp->skb; 296 struct sk_buff *skb = commp->skb;
291 struct netlink_callback *cb = commp->c 297 struct netlink_callback *cb = commp->cb;
292 const struct inet_diag_req_v2 *r = com 298 const struct inet_diag_req_v2 *r = commp->r;
293 struct sctp_association *assoc; 299 struct sctp_association *assoc;
294 int err = 0; 300 int err = 0;
295 301
296 lock_sock(sk); 302 lock_sock(sk);
297 if (ep != tsp->asoc->ep) 303 if (ep != tsp->asoc->ep)
298 goto release; 304 goto release;
299 list_for_each_entry(assoc, &ep->asocs, 305 list_for_each_entry(assoc, &ep->asocs, asocs) {
300 if (cb->args[4] < cb->args[1]) 306 if (cb->args[4] < cb->args[1])
301 goto next; 307 goto next;
302 308
303 if (r->id.idiag_sport != htons 309 if (r->id.idiag_sport != htons(assoc->base.bind_addr.port) &&
304 r->id.idiag_sport) 310 r->id.idiag_sport)
305 goto next; 311 goto next;
306 if (r->id.idiag_dport != htons 312 if (r->id.idiag_dport != htons(assoc->peer.port) &&
307 r->id.idiag_dport) 313 r->id.idiag_dport)
308 goto next; 314 goto next;
309 315
310 if (!cb->args[3] && 316 if (!cb->args[3] &&
311 inet_sctp_diag_fill(sk, NU 317 inet_sctp_diag_fill(sk, NULL, skb, r,
312 sk_use 318 sk_user_ns(NETLINK_CB(cb->skb).sk),
313 NETLIN 319 NETLINK_CB(cb->skb).portid,
314 cb->nl 320 cb->nlh->nlmsg_seq,
315 NLM_F_ 321 NLM_F_MULTI, cb->nlh,
316 commp- 322 commp->net_admin) < 0) {
317 err = 1; 323 err = 1;
318 goto release; 324 goto release;
319 } 325 }
320 cb->args[3] = 1; 326 cb->args[3] = 1;
321 327
322 if (inet_sctp_diag_fill(sk, as 328 if (inet_sctp_diag_fill(sk, assoc, skb, r,
323 sk_use 329 sk_user_ns(NETLINK_CB(cb->skb).sk),
324 NETLIN 330 NETLINK_CB(cb->skb).portid,
325 cb->nl 331 cb->nlh->nlmsg_seq, 0, cb->nlh,
326 commp- 332 commp->net_admin) < 0) {
327 err = 1; 333 err = 1;
328 goto release; 334 goto release;
329 } 335 }
330 next: 336 next:
331 cb->args[4]++; 337 cb->args[4]++;
332 } 338 }
333 cb->args[1] = 0; 339 cb->args[1] = 0;
334 cb->args[3] = 0; 340 cb->args[3] = 0;
335 cb->args[4] = 0; 341 cb->args[4] = 0;
336 release: 342 release:
337 release_sock(sk); 343 release_sock(sk);
338 return err; 344 return err;
339 } 345 }
340 346
341 static int sctp_sock_filter(struct sctp_endpoi 347 static int sctp_sock_filter(struct sctp_endpoint *ep, struct sctp_transport *tsp, void *p)
342 { 348 {
343 struct sctp_comm_param *commp = p; 349 struct sctp_comm_param *commp = p;
344 struct sock *sk = ep->base.sk; 350 struct sock *sk = ep->base.sk;
345 const struct inet_diag_req_v2 *r = com 351 const struct inet_diag_req_v2 *r = commp->r;
346 352
347 /* find the ep only once through the t 353 /* find the ep only once through the transports by this condition */
348 if (!list_is_first(&tsp->asoc->asocs, 354 if (!list_is_first(&tsp->asoc->asocs, &ep->asocs))
349 return 0; 355 return 0;
350 356
351 if (r->sdiag_family != AF_UNSPEC && sk 357 if (r->sdiag_family != AF_UNSPEC && sk->sk_family != r->sdiag_family)
352 return 0; 358 return 0;
353 359
354 return 1; 360 return 1;
355 } 361 }
356 362
357 static int sctp_ep_dump(struct sctp_endpoint * 363 static int sctp_ep_dump(struct sctp_endpoint *ep, void *p)
358 { 364 {
359 struct sctp_comm_param *commp = p; 365 struct sctp_comm_param *commp = p;
360 struct sock *sk = ep->base.sk; 366 struct sock *sk = ep->base.sk;
361 struct sk_buff *skb = commp->skb; 367 struct sk_buff *skb = commp->skb;
362 struct netlink_callback *cb = commp->c 368 struct netlink_callback *cb = commp->cb;
363 const struct inet_diag_req_v2 *r = com 369 const struct inet_diag_req_v2 *r = commp->r;
364 struct net *net = sock_net(skb->sk); 370 struct net *net = sock_net(skb->sk);
365 struct inet_sock *inet = inet_sk(sk); 371 struct inet_sock *inet = inet_sk(sk);
366 int err = 0; 372 int err = 0;
367 373
368 if (!net_eq(sock_net(sk), net)) 374 if (!net_eq(sock_net(sk), net))
369 goto out; 375 goto out;
370 376
371 if (cb->args[4] < cb->args[1]) 377 if (cb->args[4] < cb->args[1])
372 goto next; 378 goto next;
373 379
374 if (!(r->idiag_states & TCPF_LISTEN) & 380 if (!(r->idiag_states & TCPF_LISTEN) && !list_empty(&ep->asocs))
375 goto next; 381 goto next;
376 382
377 if (r->sdiag_family != AF_UNSPEC && 383 if (r->sdiag_family != AF_UNSPEC &&
378 sk->sk_family != r->sdiag_family) 384 sk->sk_family != r->sdiag_family)
379 goto next; 385 goto next;
380 386
381 if (r->id.idiag_sport != inet->inet_sp 387 if (r->id.idiag_sport != inet->inet_sport &&
382 r->id.idiag_sport) 388 r->id.idiag_sport)
383 goto next; 389 goto next;
384 390
385 if (r->id.idiag_dport != inet->inet_dp 391 if (r->id.idiag_dport != inet->inet_dport &&
386 r->id.idiag_dport) 392 r->id.idiag_dport)
387 goto next; 393 goto next;
388 394
389 if (inet_sctp_diag_fill(sk, NULL, skb, 395 if (inet_sctp_diag_fill(sk, NULL, skb, r,
390 sk_user_ns(NET 396 sk_user_ns(NETLINK_CB(cb->skb).sk),
391 NETLINK_CB(cb- 397 NETLINK_CB(cb->skb).portid,
392 cb->nlh->nlmsg 398 cb->nlh->nlmsg_seq, NLM_F_MULTI,
393 cb->nlh, commp 399 cb->nlh, commp->net_admin) < 0) {
394 err = 2; 400 err = 2;
395 goto out; 401 goto out;
396 } 402 }
397 next: 403 next:
398 cb->args[4]++; 404 cb->args[4]++;
399 out: 405 out:
400 return err; 406 return err;
401 } 407 }
402 408
403 /* define the functions for sctp_diag_handler* 409 /* define the functions for sctp_diag_handler*/
404 static void sctp_diag_get_info(struct sock *sk 410 static void sctp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
405 void *info) 411 void *info)
406 { 412 {
407 struct sctp_infox *infox = (struct sct 413 struct sctp_infox *infox = (struct sctp_infox *)info;
408 414
409 if (infox->asoc) { 415 if (infox->asoc) {
410 r->idiag_rqueue = atomic_read( 416 r->idiag_rqueue = atomic_read(&infox->asoc->rmem_alloc);
411 r->idiag_wqueue = infox->asoc- 417 r->idiag_wqueue = infox->asoc->sndbuf_used;
412 } else { 418 } else {
413 r->idiag_rqueue = READ_ONCE(sk 419 r->idiag_rqueue = READ_ONCE(sk->sk_ack_backlog);
414 r->idiag_wqueue = READ_ONCE(sk 420 r->idiag_wqueue = READ_ONCE(sk->sk_max_ack_backlog);
415 } 421 }
416 if (infox->sctpinfo) 422 if (infox->sctpinfo)
417 sctp_get_sctp_info(sk, infox-> 423 sctp_get_sctp_info(sk, infox->asoc, infox->sctpinfo);
418 } 424 }
419 425
420 static int sctp_diag_dump_one(struct netlink_c !! 426 static int sctp_diag_dump_one(struct sk_buff *in_skb,
>> 427 const struct nlmsghdr *nlh,
421 const struct ine 428 const struct inet_diag_req_v2 *req)
422 { 429 {
423 struct sk_buff *skb = cb->skb; !! 430 struct net *net = sock_net(in_skb->sk);
424 struct net *net = sock_net(skb->sk); <<
425 const struct nlmsghdr *nlh = cb->nlh; <<
426 union sctp_addr laddr, paddr; 431 union sctp_addr laddr, paddr;
427 int dif = req->id.idiag_if; <<
428 struct sctp_comm_param commp = { 432 struct sctp_comm_param commp = {
429 .skb = skb, !! 433 .skb = in_skb,
430 .r = req, 434 .r = req,
431 .nlh = nlh, 435 .nlh = nlh,
432 .net_admin = netlink_net_capab !! 436 .net_admin = netlink_net_capable(in_skb, CAP_NET_ADMIN),
433 }; 437 };
434 438
435 if (req->sdiag_family == AF_INET) { 439 if (req->sdiag_family == AF_INET) {
436 laddr.v4.sin_port = req->id.id 440 laddr.v4.sin_port = req->id.idiag_sport;
437 laddr.v4.sin_addr.s_addr = req 441 laddr.v4.sin_addr.s_addr = req->id.idiag_src[0];
438 laddr.v4.sin_family = AF_INET; 442 laddr.v4.sin_family = AF_INET;
439 443
440 paddr.v4.sin_port = req->id.id 444 paddr.v4.sin_port = req->id.idiag_dport;
441 paddr.v4.sin_addr.s_addr = req 445 paddr.v4.sin_addr.s_addr = req->id.idiag_dst[0];
442 paddr.v4.sin_family = AF_INET; 446 paddr.v4.sin_family = AF_INET;
443 } else { 447 } else {
444 laddr.v6.sin6_port = req->id.i 448 laddr.v6.sin6_port = req->id.idiag_sport;
445 memcpy(&laddr.v6.sin6_addr, re 449 memcpy(&laddr.v6.sin6_addr, req->id.idiag_src,
446 sizeof(laddr.v6.sin6_ad 450 sizeof(laddr.v6.sin6_addr));
447 laddr.v6.sin6_family = AF_INET 451 laddr.v6.sin6_family = AF_INET6;
448 452
449 paddr.v6.sin6_port = req->id.i 453 paddr.v6.sin6_port = req->id.idiag_dport;
450 memcpy(&paddr.v6.sin6_addr, re 454 memcpy(&paddr.v6.sin6_addr, req->id.idiag_dst,
451 sizeof(paddr.v6.sin6_ad 455 sizeof(paddr.v6.sin6_addr));
452 paddr.v6.sin6_family = AF_INET 456 paddr.v6.sin6_family = AF_INET6;
453 } 457 }
454 458
455 return sctp_transport_lookup_process(s !! 459 return sctp_transport_lookup_process(sctp_tsp_dump_one,
456 n !! 460 net, &laddr, &paddr, &commp);
457 } 461 }
458 462
459 static void sctp_diag_dump(struct sk_buff *skb 463 static void sctp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
460 const struct inet_d !! 464 const struct inet_diag_req_v2 *r, struct nlattr *bc)
461 { 465 {
462 u32 idiag_states = r->idiag_states; 466 u32 idiag_states = r->idiag_states;
463 struct net *net = sock_net(skb->sk); 467 struct net *net = sock_net(skb->sk);
464 struct sctp_comm_param commp = { 468 struct sctp_comm_param commp = {
465 .skb = skb, 469 .skb = skb,
466 .cb = cb, 470 .cb = cb,
467 .r = r, 471 .r = r,
468 .net_admin = netlink_net_capab 472 .net_admin = netlink_net_capable(cb->skb, CAP_NET_ADMIN),
469 }; 473 };
470 int pos = cb->args[2]; 474 int pos = cb->args[2];
471 475
472 /* eps hashtable dumps 476 /* eps hashtable dumps
473 * args: 477 * args:
474 * 0 : if it will traversal listen soc 478 * 0 : if it will traversal listen sock
475 * 1 : to record the sock pos of this 479 * 1 : to record the sock pos of this time's traversal
476 * 4 : to work as a temporary variable 480 * 4 : to work as a temporary variable to traversal list
477 */ 481 */
478 if (cb->args[0] == 0) { 482 if (cb->args[0] == 0) {
479 if (!(idiag_states & TCPF_LIST 483 if (!(idiag_states & TCPF_LISTEN))
480 goto skip; 484 goto skip;
481 if (sctp_for_each_endpoint(sct 485 if (sctp_for_each_endpoint(sctp_ep_dump, &commp))
482 goto done; 486 goto done;
483 skip: 487 skip:
484 cb->args[0] = 1; 488 cb->args[0] = 1;
485 cb->args[1] = 0; 489 cb->args[1] = 0;
486 cb->args[4] = 0; 490 cb->args[4] = 0;
487 } 491 }
488 492
489 /* asocs by transport hashtable dump 493 /* asocs by transport hashtable dump
490 * args: 494 * args:
491 * 1 : to record the assoc pos of this 495 * 1 : to record the assoc pos of this time's traversal
492 * 2 : to record the transport pos of 496 * 2 : to record the transport pos of this time's traversal
493 * 3 : to mark if we have dumped the e 497 * 3 : to mark if we have dumped the ep info of the current asoc
494 * 4 : to work as a temporary variable 498 * 4 : to work as a temporary variable to traversal list
495 * 5 : to save the sk we get from trav 499 * 5 : to save the sk we get from travelsing the tsp list.
496 */ 500 */
497 if (!(idiag_states & ~(TCPF_LISTEN | T 501 if (!(idiag_states & ~(TCPF_LISTEN | TCPF_CLOSE)))
498 goto done; 502 goto done;
499 503
500 sctp_transport_traverse_process(sctp_s 504 sctp_transport_traverse_process(sctp_sock_filter, sctp_sock_dump,
501 net, & 505 net, &pos, &commp);
502 cb->args[2] = pos; 506 cb->args[2] = pos;
503 507
504 done: 508 done:
505 cb->args[1] = cb->args[4]; 509 cb->args[1] = cb->args[4];
506 cb->args[4] = 0; 510 cb->args[4] = 0;
507 } 511 }
508 512
509 static const struct inet_diag_handler sctp_dia 513 static const struct inet_diag_handler sctp_diag_handler = {
510 .owner = THIS_MODULE, <<
511 .dump = sctp_diag_dump, 514 .dump = sctp_diag_dump,
512 .dump_one = sctp_diag_dump_one, 515 .dump_one = sctp_diag_dump_one,
513 .idiag_get_info = sctp_diag_get_info, 516 .idiag_get_info = sctp_diag_get_info,
514 .idiag_type = IPPROTO_SCTP, 517 .idiag_type = IPPROTO_SCTP,
515 .idiag_info_size = sizeof(struct sctp_ 518 .idiag_info_size = sizeof(struct sctp_info),
516 }; 519 };
517 520
518 static int __init sctp_diag_init(void) 521 static int __init sctp_diag_init(void)
519 { 522 {
520 return inet_diag_register(&sctp_diag_h 523 return inet_diag_register(&sctp_diag_handler);
521 } 524 }
522 525
523 static void __exit sctp_diag_exit(void) 526 static void __exit sctp_diag_exit(void)
524 { 527 {
525 inet_diag_unregister(&sctp_diag_handle 528 inet_diag_unregister(&sctp_diag_handler);
526 } 529 }
527 530
528 module_init(sctp_diag_init); 531 module_init(sctp_diag_init);
529 module_exit(sctp_diag_exit); 532 module_exit(sctp_diag_exit);
530 MODULE_LICENSE("GPL"); 533 MODULE_LICENSE("GPL");
531 MODULE_DESCRIPTION("SCTP socket monitoring via <<
532 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NET 534 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-132);
533 535
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