1 /* 1 /*
2 * Copyright (c) 2001 The Regents of the Univ 2 * Copyright (c) 2001 The Regents of the University of Michigan.
3 * All rights reserved. 3 * All rights reserved.
4 * 4 *
5 * Kendrick Smith <kmsmith@umich.edu> 5 * Kendrick Smith <kmsmith@umich.edu>
6 * Andy Adamson <andros@umich.edu> 6 * Andy Adamson <andros@umich.edu>
7 * 7 *
8 * Redistribution and use in source and binar 8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that 9 * modification, are permitted provided that the following conditions
10 * are met: 10 * are met:
11 * 11 *
12 * 1. Redistributions of source code must ret 12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the 13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must rep 14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the 15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials pr 16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor 17 * 3. Neither the name of the University nor the names of its
18 * contributors may be used to endorse or 18 * contributors may be used to endorse or promote products derived
19 * from this software without specific pri 19 * from this software without specific prior written permission.
20 * 20 *
21 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND AN 21 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICUL 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS 24 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPEC 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
28 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIA 29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WA 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILI 31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 * 32 *
33 */ 33 */
34 34
35 #ifndef _NFSD4_STATE_H 35 #ifndef _NFSD4_STATE_H
36 #define _NFSD4_STATE_H 36 #define _NFSD4_STATE_H
37 37
38 #include <linux/idr.h> 38 #include <linux/idr.h>
39 #include <linux/refcount.h> 39 #include <linux/refcount.h>
40 #include <linux/sunrpc/svc_xprt.h> 40 #include <linux/sunrpc/svc_xprt.h>
41 #include "nfsfh.h" 41 #include "nfsfh.h"
42 #include "nfsd.h" <<
43 42
44 typedef struct { 43 typedef struct {
45 u32 cl_boot; 44 u32 cl_boot;
46 u32 cl_id; 45 u32 cl_id;
47 } clientid_t; 46 } clientid_t;
48 47
49 typedef struct { 48 typedef struct {
50 clientid_t so_clid; 49 clientid_t so_clid;
51 u32 so_id; 50 u32 so_id;
52 } stateid_opaque_t; 51 } stateid_opaque_t;
53 52
54 typedef struct { 53 typedef struct {
55 u32 si_generation; 54 u32 si_generation;
56 stateid_opaque_t si_opaque; 55 stateid_opaque_t si_opaque;
57 } stateid_t; 56 } stateid_t;
58 57
59 typedef struct { !! 58 #define STATEID_FMT "(%08x/%08x/%08x/%08x)"
60 stateid_t cs_stid; !! 59 #define STATEID_VAL(s) \
61 #define NFS4_COPY_STID 1 !! 60 (s)->si_opaque.so_clid.cl_boot, \
62 #define NFS4_COPYNOTIFY_STID 2 !! 61 (s)->si_opaque.so_clid.cl_id, \
63 unsigned char cs_type; !! 62 (s)->si_opaque.so_id, \
64 refcount_t cs_count; !! 63 (s)->si_generation
65 } copy_stateid_t; <<
66 64
67 struct nfsd4_callback { 65 struct nfsd4_callback {
68 struct nfs4_client *cb_clp; 66 struct nfs4_client *cb_clp;
69 struct rpc_message cb_msg; 67 struct rpc_message cb_msg;
70 const struct nfsd4_callback_ops *cb_op 68 const struct nfsd4_callback_ops *cb_ops;
71 struct work_struct cb_work; 69 struct work_struct cb_work;
72 int cb_seq_status; 70 int cb_seq_status;
73 int cb_status; 71 int cb_status;
74 bool cb_need_restart; 72 bool cb_need_restart;
75 bool cb_holds_slot; <<
76 }; 73 };
77 74
78 struct nfsd4_callback_ops { 75 struct nfsd4_callback_ops {
79 void (*prepare)(struct nfsd4_callback 76 void (*prepare)(struct nfsd4_callback *);
80 int (*done)(struct nfsd4_callback *, s 77 int (*done)(struct nfsd4_callback *, struct rpc_task *);
81 void (*release)(struct nfsd4_callback 78 void (*release)(struct nfsd4_callback *);
82 uint32_t opcode; <<
83 }; 79 };
84 80
85 /* 81 /*
86 * A core object that represents a "common" st 82 * A core object that represents a "common" stateid. These are generally
87 * embedded within the different (more specifi 83 * embedded within the different (more specific) stateid objects and contain
88 * fields that are of general use to any state 84 * fields that are of general use to any stateid.
89 */ 85 */
90 struct nfs4_stid { 86 struct nfs4_stid {
91 refcount_t sc_count; 87 refcount_t sc_count;
92 !! 88 #define NFS4_OPEN_STID 1
93 /* A new stateid is added to the cl_st !! 89 #define NFS4_LOCK_STID 2
94 * is fully initialised. Its sc_type !! 90 #define NFS4_DELEG_STID 4
95 * initialisation the sc_type it set u !! 91 /* For an open stateid kept around *only* to process close replays: */
96 * never changes. !! 92 #define NFS4_CLOSED_STID 8
97 */ <<
98 #define SC_TYPE_OPEN BIT(0) <<
99 #define SC_TYPE_LOCK BIT(1) <<
100 #define SC_TYPE_DELEG BIT(2) <<
101 #define SC_TYPE_LAYOUT BIT(3) <<
102 unsigned short sc_type; <<
103 <<
104 /* state_lock protects sc_status for delegatio <<
105 * ->cl_lock protects sc_status for open and l <<
106 * ->st_mutex also protect sc_status for open <<
107 * ->ls_lock protects sc_status for layout sta <<
108 */ <<
109 /* <<
110 * For an open stateid kept around *only* to p <<
111 * For deleg stateid, kept in idr until last r <<
112 */ <<
113 #define SC_STATUS_CLOSED BIT(0) <<
114 /* For a deleg stateid kept around only to pro 93 /* For a deleg stateid kept around only to process free_stateid's: */
115 #define SC_STATUS_REVOKED BIT(1) !! 94 #define NFS4_REVOKED_DELEG_STID 16
116 #define SC_STATUS_ADMIN_REVOKED BIT(2) !! 95 #define NFS4_CLOSED_DELEG_STID 32
117 #define SC_STATUS_FREEABLE BIT(3) !! 96 #define NFS4_LAYOUT_STID 64
118 #define SC_STATUS_FREED BIT(4) !! 97 unsigned char sc_type;
119 unsigned short sc_status; <<
120 <<
121 struct list_head sc_cp_list; <<
122 stateid_t sc_stateid; 98 stateid_t sc_stateid;
123 spinlock_t sc_lock; 99 spinlock_t sc_lock;
124 struct nfs4_client *sc_client; 100 struct nfs4_client *sc_client;
125 struct nfs4_file *sc_file; 101 struct nfs4_file *sc_file;
126 void (*sc_free)(str 102 void (*sc_free)(struct nfs4_stid *);
127 }; 103 };
128 104
129 /* Keep a list of stateids issued by the COPY_ <<
130 * parent OPEN/LOCK/DELEG stateid. <<
131 */ <<
132 struct nfs4_cpntf_state { <<
133 copy_stateid_t cp_stateid; <<
134 struct list_head cp_list; <<
135 stateid_t cp_p_stateid; <<
136 clientid_t cp_p_clid; <<
137 time64_t cpntf_time; <<
138 }; <<
139 <<
140 struct nfs4_cb_fattr { <<
141 struct nfsd4_callback ncf_getattr; <<
142 u32 ncf_cb_status; <<
143 u32 ncf_cb_bmap[1]; <<
144 <<
145 /* from CB_GETATTR reply */ <<
146 u64 ncf_cb_change; <<
147 u64 ncf_cb_fsize; <<
148 <<
149 unsigned long ncf_cb_flags; <<
150 bool ncf_file_modified; <<
151 u64 ncf_initial_cinfo; <<
152 u64 ncf_cur_fsize; <<
153 }; <<
154 <<
155 /* bits for ncf_cb_flags */ <<
156 #define CB_GETATTR_BUSY 0 <<
157 <<
158 /* 105 /*
159 * Represents a delegation stateid. The nfs4_c 106 * Represents a delegation stateid. The nfs4_client holds references to these
160 * and they are put when it is being destroyed 107 * and they are put when it is being destroyed or when the delegation is
161 * returned by the client: 108 * returned by the client:
162 * 109 *
163 * o 1 reference as long as a delegation is st 110 * o 1 reference as long as a delegation is still in force (taken when it's
164 * alloc'd, put when it's returned or revoke 111 * alloc'd, put when it's returned or revoked)
165 * 112 *
166 * o 1 reference as long as a recall rpc is in 113 * o 1 reference as long as a recall rpc is in progress (taken when the lease
167 * is broken, put when the rpc exits) 114 * is broken, put when the rpc exits)
168 * 115 *
169 * o 1 more ephemeral reference for each nfsd 116 * o 1 more ephemeral reference for each nfsd thread currently doing something
170 * with that delegation without holding the 117 * with that delegation without holding the cl_lock
171 * 118 *
172 * If the server attempts to recall a delegati 119 * If the server attempts to recall a delegation and the client doesn't do so
173 * before a timeout, the server may also revok 120 * before a timeout, the server may also revoke the delegation. In that case,
174 * the object will either be destroyed (v4.0) 121 * the object will either be destroyed (v4.0) or moved to a per-client list of
175 * revoked delegations (v4.1+). 122 * revoked delegations (v4.1+).
176 * 123 *
177 * This object is a superset of the nfs4_stid. 124 * This object is a superset of the nfs4_stid.
178 */ 125 */
179 struct nfs4_delegation { 126 struct nfs4_delegation {
180 struct nfs4_stid dl_stid; /* mu 127 struct nfs4_stid dl_stid; /* must be first field */
181 struct list_head dl_perfile; 128 struct list_head dl_perfile;
182 struct list_head dl_perclnt; 129 struct list_head dl_perclnt;
183 struct list_head dl_recall_lru; 130 struct list_head dl_recall_lru; /* delegation recalled */
184 struct nfs4_clnt_odstate *dl_clnt_odst 131 struct nfs4_clnt_odstate *dl_clnt_odstate;
185 u32 dl_type; 132 u32 dl_type;
186 time64_t dl_time; !! 133 time_t dl_time;
187 /* For recall: */ 134 /* For recall: */
188 int dl_retries; 135 int dl_retries;
189 struct nfsd4_callback dl_recall; 136 struct nfsd4_callback dl_recall;
190 bool dl_recalled; <<
191 <<
192 /* for CB_GETATTR */ <<
193 struct nfs4_cb_fattr dl_cb_fattr; <<
194 }; 137 };
195 138
196 #define cb_to_delegation(cb) \ 139 #define cb_to_delegation(cb) \
197 container_of(cb, struct nfs4_delegatio 140 container_of(cb, struct nfs4_delegation, dl_recall)
198 141
199 /* client delegation callback info */ 142 /* client delegation callback info */
200 struct nfs4_cb_conn { 143 struct nfs4_cb_conn {
201 /* SETCLIENTID info */ 144 /* SETCLIENTID info */
202 struct sockaddr_storage cb_addr; 145 struct sockaddr_storage cb_addr;
203 struct sockaddr_storage cb_saddr; 146 struct sockaddr_storage cb_saddr;
204 size_t cb_addrlen; 147 size_t cb_addrlen;
205 u32 cb_prog; /* us 148 u32 cb_prog; /* used only in 4.0 case;
206 pe 149 per-session otherwise */
207 u32 cb_ident; 150 u32 cb_ident; /* minorversion 0 only */
208 struct svc_xprt *cb_xprt; 151 struct svc_xprt *cb_xprt; /* minorversion 1 only */
209 }; 152 };
210 153
211 static inline struct nfs4_delegation *delegsta 154 static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s)
212 { 155 {
213 return container_of(s, struct nfs4_del 156 return container_of(s, struct nfs4_delegation, dl_stid);
214 } 157 }
215 158
216 /* Maximum number of slots per session. 160 is 159 /* Maximum number of slots per session. 160 is useful for long haul TCP */
217 #define NFSD_MAX_SLOTS_PER_SESSION 160 160 #define NFSD_MAX_SLOTS_PER_SESSION 160
>> 161 /* Maximum number of operations per session compound */
>> 162 #define NFSD_MAX_OPS_PER_COMPOUND 16
218 /* Maximum session per slot cache size */ 163 /* Maximum session per slot cache size */
219 #define NFSD_SLOT_CACHE_SIZE 2048 164 #define NFSD_SLOT_CACHE_SIZE 2048
220 /* Maximum number of NFSD_SLOT_CACHE_SIZE slot 165 /* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */
221 #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 166 #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 32
222 #define NFSD_MAX_MEM_PER_SESSION \ 167 #define NFSD_MAX_MEM_PER_SESSION \
223 (NFSD_CACHE_SIZE_SLOTS_PER_SES 168 (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE)
224 169
225 struct nfsd4_slot { 170 struct nfsd4_slot {
226 u32 sl_seqid; 171 u32 sl_seqid;
227 __be32 sl_status; 172 __be32 sl_status;
228 struct svc_cred sl_cred; 173 struct svc_cred sl_cred;
229 u32 sl_datalen; 174 u32 sl_datalen;
230 u16 sl_opcnt; 175 u16 sl_opcnt;
231 #define NFSD4_SLOT_INUSE (1 << 0) 176 #define NFSD4_SLOT_INUSE (1 << 0)
232 #define NFSD4_SLOT_CACHETHIS (1 << 1) 177 #define NFSD4_SLOT_CACHETHIS (1 << 1)
233 #define NFSD4_SLOT_INITIALIZED (1 << 2) 178 #define NFSD4_SLOT_INITIALIZED (1 << 2)
234 #define NFSD4_SLOT_CACHED (1 << 3) 179 #define NFSD4_SLOT_CACHED (1 << 3)
235 u8 sl_flags; 180 u8 sl_flags;
236 char sl_data[]; 181 char sl_data[];
237 }; 182 };
238 183
239 struct nfsd4_channel_attrs { 184 struct nfsd4_channel_attrs {
240 u32 headerpadsz; 185 u32 headerpadsz;
241 u32 maxreq_sz; 186 u32 maxreq_sz;
242 u32 maxresp_sz; 187 u32 maxresp_sz;
243 u32 maxresp_cached; 188 u32 maxresp_cached;
244 u32 maxops; 189 u32 maxops;
245 u32 maxreqs; 190 u32 maxreqs;
246 u32 nr_rdma_attrs; 191 u32 nr_rdma_attrs;
247 u32 rdma_attrs; 192 u32 rdma_attrs;
248 }; 193 };
249 194
250 struct nfsd4_cb_sec { 195 struct nfsd4_cb_sec {
251 u32 flavor; /* (u32)(-1) used to m 196 u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */
252 kuid_t uid; 197 kuid_t uid;
253 kgid_t gid; 198 kgid_t gid;
254 }; 199 };
255 200
256 struct nfsd4_create_session { 201 struct nfsd4_create_session {
257 clientid_t client 202 clientid_t clientid;
258 struct nfs4_sessionid sessio 203 struct nfs4_sessionid sessionid;
259 u32 seqid; 204 u32 seqid;
260 u32 flags; 205 u32 flags;
261 struct nfsd4_channel_attrs fore_c 206 struct nfsd4_channel_attrs fore_channel;
262 struct nfsd4_channel_attrs back_c 207 struct nfsd4_channel_attrs back_channel;
263 u32 callba 208 u32 callback_prog;
264 struct nfsd4_cb_sec cb_sec 209 struct nfsd4_cb_sec cb_sec;
265 }; 210 };
266 211
267 struct nfsd4_backchannel_ctl { 212 struct nfsd4_backchannel_ctl {
268 u32 bc_cb_program; 213 u32 bc_cb_program;
269 struct nfsd4_cb_sec bc_cb_ 214 struct nfsd4_cb_sec bc_cb_sec;
270 }; 215 };
271 216
272 struct nfsd4_bind_conn_to_session { 217 struct nfsd4_bind_conn_to_session {
273 struct nfs4_sessionid sessio 218 struct nfs4_sessionid sessionid;
274 u32 dir; 219 u32 dir;
275 }; 220 };
276 221
277 /* The single slot clientid cache structure */ 222 /* The single slot clientid cache structure */
278 struct nfsd4_clid_slot { 223 struct nfsd4_clid_slot {
279 u32 sl_seq 224 u32 sl_seqid;
280 __be32 sl_sta 225 __be32 sl_status;
281 struct nfsd4_create_session sl_cr_ 226 struct nfsd4_create_session sl_cr_ses;
282 }; 227 };
283 228
284 struct nfsd4_conn { 229 struct nfsd4_conn {
285 struct list_head cn_persession; 230 struct list_head cn_persession;
286 struct svc_xprt *cn_xprt; 231 struct svc_xprt *cn_xprt;
287 struct svc_xpt_user cn_xpt_user; 232 struct svc_xpt_user cn_xpt_user;
288 struct nfsd4_session *cn_session; 233 struct nfsd4_session *cn_session;
289 /* CDFC4_FORE, CDFC4_BACK: */ 234 /* CDFC4_FORE, CDFC4_BACK: */
290 unsigned char cn_flags; 235 unsigned char cn_flags;
291 }; 236 };
292 237
293 /* 238 /*
294 * Representation of a v4.1+ session. These ar 239 * Representation of a v4.1+ session. These are refcounted in a similar fashion
295 * to the nfs4_client. References are only tak 240 * to the nfs4_client. References are only taken when the server is actively
296 * working on the object (primarily during the 241 * working on the object (primarily during the processing of compounds).
297 */ 242 */
298 struct nfsd4_session { 243 struct nfsd4_session {
299 atomic_t se_ref; 244 atomic_t se_ref;
300 struct list_head se_hash; 245 struct list_head se_hash; /* hash by sessionid */
301 struct list_head se_perclnt; 246 struct list_head se_perclnt;
302 /* See SESSION4_PERSIST, etc. for standard fla 247 /* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */
303 #define NFS4_SESSION_DEAD 0x010 248 #define NFS4_SESSION_DEAD 0x010
304 u32 se_flags; 249 u32 se_flags;
305 struct nfs4_client *se_client; 250 struct nfs4_client *se_client;
306 struct nfs4_sessionid se_sessionid; 251 struct nfs4_sessionid se_sessionid;
307 struct nfsd4_channel_attrs se_fchannel 252 struct nfsd4_channel_attrs se_fchannel;
308 struct nfsd4_channel_attrs se_bchannel 253 struct nfsd4_channel_attrs se_bchannel;
309 struct nfsd4_cb_sec se_cb_sec; 254 struct nfsd4_cb_sec se_cb_sec;
310 struct list_head se_conns; 255 struct list_head se_conns;
311 u32 se_cb_prog; 256 u32 se_cb_prog;
312 u32 se_cb_seq_nr; 257 u32 se_cb_seq_nr;
313 struct nfsd4_slot *se_slots[]; 258 struct nfsd4_slot *se_slots[]; /* forward channel slots */
314 }; 259 };
315 260
316 /* formatted contents of nfs4_sessionid */ 261 /* formatted contents of nfs4_sessionid */
317 struct nfsd4_sessionid { 262 struct nfsd4_sessionid {
318 clientid_t clientid; 263 clientid_t clientid;
319 u32 sequence; 264 u32 sequence;
320 u32 reserved; 265 u32 reserved;
321 }; 266 };
322 267
323 #define HEXDIR_LEN 33 /* hex version of 16 268 #define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */
324 269
325 /* 270 /*
326 * State Meaning <<
327 * ------------------------------------------- <<
328 * | NFSD4_ACTIVE | Confirmed, active <<
329 * |------------------- ---------------------- <<
330 * | NFSD4_COURTESY | Courtesy state. <<
331 * | | Lease/lock/share <<
332 * | | reservation conflict <<
333 * | | can cause Courtesy <<
334 * | | client to be expired <<
335 * |------------------------------------------ <<
336 * | NFSD4_EXPIRABLE | Courtesy client to be <<
337 * | | expired by Laundromat <<
338 * | | due to conflict <<
339 * |------------------------------------------ <<
340 */ <<
341 enum { <<
342 NFSD4_ACTIVE = 0, <<
343 NFSD4_COURTESY, <<
344 NFSD4_EXPIRABLE, <<
345 }; <<
346 <<
347 /* <<
348 * struct nfs4_client - one per client. Clien 271 * struct nfs4_client - one per client. Clientids live here.
349 * 272 *
350 * The initial object created by an NFS client 273 * The initial object created by an NFS client using SETCLIENTID (for NFSv4.0)
351 * or EXCHANGE_ID (for NFSv4.1+). These object 274 * or EXCHANGE_ID (for NFSv4.1+). These objects are refcounted and timestamped.
352 * Each nfsd_net_ns object contains a set of t 275 * Each nfsd_net_ns object contains a set of these and they are tracked via
353 * short and long form clientid. They are hash 276 * short and long form clientid. They are hashed and searched for under the
354 * per-nfsd_net client_lock spinlock. 277 * per-nfsd_net client_lock spinlock.
355 * 278 *
356 * References to it are only held during the p 279 * References to it are only held during the processing of compounds, and in
357 * certain other operations. In their "resting 280 * certain other operations. In their "resting state" they have a refcount of
358 * 0. If they are not renewed within a lease p 281 * 0. If they are not renewed within a lease period, they become eligible for
359 * destruction by the laundromat. 282 * destruction by the laundromat.
360 * 283 *
361 * These objects can also be destroyed if the !! 284 * These objects can also be destroyed prematurely by the fault injection code,
362 * SETCLIENTID or EXCHANGE_ID operations. !! 285 * or if the client sends certain forms of SETCLIENTID or EXCHANGE_ID updates.
363 * <<
364 * Care is taken *not* to do this however when 286 * Care is taken *not* to do this however when the objects have an elevated
365 * refcount. 287 * refcount.
366 * 288 *
367 * o Each nfs4_client is hashed by clientid 289 * o Each nfs4_client is hashed by clientid
368 * 290 *
369 * o Each nfs4_clients is also hashed by name 291 * o Each nfs4_clients is also hashed by name (the opaque quantity initially
370 * sent by the client to identify itself). 292 * sent by the client to identify itself).
371 * !! 293 *
372 * o cl_perclient list is used to ensure no da 294 * o cl_perclient list is used to ensure no dangling stateowner references
373 * when we expire the nfs4_client 295 * when we expire the nfs4_client
374 */ 296 */
375 struct nfs4_client { 297 struct nfs4_client {
376 struct list_head cl_idhash; 298 struct list_head cl_idhash; /* hash by cl_clientid.id */
377 struct rb_node cl_namenode; 299 struct rb_node cl_namenode; /* link into by-name trees */
378 struct list_head *cl_ownerstr_h 300 struct list_head *cl_ownerstr_hashtbl;
379 struct list_head cl_openowners; 301 struct list_head cl_openowners;
380 struct idr cl_stateids; 302 struct idr cl_stateids; /* stateid lookup */
381 struct list_head cl_delegations 303 struct list_head cl_delegations;
382 struct list_head cl_revoked; 304 struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */
383 struct list_head cl_lru; 305 struct list_head cl_lru; /* tail queue */
384 #ifdef CONFIG_NFSD_PNFS 306 #ifdef CONFIG_NFSD_PNFS
385 struct list_head cl_lo_states; 307 struct list_head cl_lo_states; /* outstanding layout states */
386 #endif 308 #endif
387 struct xdr_netobj cl_name; 309 struct xdr_netobj cl_name; /* id generated by client */
388 nfs4_verifier cl_verifier; 310 nfs4_verifier cl_verifier; /* generated by client */
389 time64_t cl_time; !! 311 time_t cl_time; /* time of last lease renewal */
390 struct sockaddr_storage cl_addr; 312 struct sockaddr_storage cl_addr; /* client ipaddress */
391 bool cl_mach_cred; 313 bool cl_mach_cred; /* SP4_MACH_CRED in force */
392 struct svc_cred cl_cred; 314 struct svc_cred cl_cred; /* setclientid principal */
393 clientid_t cl_clientid; 315 clientid_t cl_clientid; /* generated by server */
394 nfs4_verifier cl_confirm; 316 nfs4_verifier cl_confirm; /* generated by server */
395 u32 cl_minorversio 317 u32 cl_minorversion;
396 atomic_t cl_admin_revok <<
397 /* NFSv4.1 client implementation id: * <<
398 struct xdr_netobj cl_nii_domain; <<
399 struct xdr_netobj cl_nii_name; <<
400 struct timespec64 cl_nii_time; <<
401 318
402 /* for v4.0 and v4.1 callbacks: */ 319 /* for v4.0 and v4.1 callbacks: */
403 struct nfs4_cb_conn cl_cb_conn; 320 struct nfs4_cb_conn cl_cb_conn;
404 #define NFSD4_CLIENT_CB_UPDATE (0) 321 #define NFSD4_CLIENT_CB_UPDATE (0)
405 #define NFSD4_CLIENT_CB_KILL (1) 322 #define NFSD4_CLIENT_CB_KILL (1)
406 #define NFSD4_CLIENT_STABLE (2) 323 #define NFSD4_CLIENT_STABLE (2) /* client on stable storage */
407 #define NFSD4_CLIENT_RECLAIM_COMPLETE (3) 324 #define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */
408 #define NFSD4_CLIENT_CONFIRMED (4) 325 #define NFSD4_CLIENT_CONFIRMED (4) /* client is confirmed */
409 #define NFSD4_CLIENT_UPCALL_LOCK (5) 326 #define NFSD4_CLIENT_UPCALL_LOCK (5) /* upcall serialization */
410 #define NFSD4_CLIENT_CB_FLAG_MASK (1 << 327 #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \
411 1 << 328 1 << NFSD4_CLIENT_CB_KILL)
412 #define NFSD4_CLIENT_CB_RECALL_ANY (6) <<
413 unsigned long cl_flags; 329 unsigned long cl_flags;
414 !! 330 struct rpc_cred *cl_cb_cred;
415 struct workqueue_struct *cl_callback_w <<
416 const struct cred *cl_cb_cred; <<
417 struct rpc_clnt *cl_cb_client; 331 struct rpc_clnt *cl_cb_client;
418 u32 cl_cb_ident; 332 u32 cl_cb_ident;
419 #define NFSD4_CB_UP 0 333 #define NFSD4_CB_UP 0
420 #define NFSD4_CB_UNKNOWN 1 334 #define NFSD4_CB_UNKNOWN 1
421 #define NFSD4_CB_DOWN 2 335 #define NFSD4_CB_DOWN 2
422 #define NFSD4_CB_FAULT 3 336 #define NFSD4_CB_FAULT 3
423 int cl_cb_state; 337 int cl_cb_state;
424 struct nfsd4_callback cl_cb_null; 338 struct nfsd4_callback cl_cb_null;
425 struct nfsd4_session *cl_cb_session 339 struct nfsd4_session *cl_cb_session;
426 340
427 /* for all client information that cal 341 /* for all client information that callback code might need: */
428 spinlock_t cl_lock; 342 spinlock_t cl_lock;
429 343
430 /* for nfs41 */ 344 /* for nfs41 */
431 struct list_head cl_sessions; 345 struct list_head cl_sessions;
432 struct nfsd4_clid_slot cl_cs_slot; 346 struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */
433 u32 cl_exchange_fl 347 u32 cl_exchange_flags;
434 /* number of rpc's in progress over an 348 /* number of rpc's in progress over an associated session: */
435 atomic_t cl_rpc_users; !! 349 atomic_t cl_refcount;
436 struct nfsdfs_client cl_nfsdfs; <<
437 struct nfs4_op_map cl_spo_must_al 350 struct nfs4_op_map cl_spo_must_allow;
438 351
439 /* debugging info directory under nfsd <<
440 struct dentry *cl_nfsd_dentr <<
441 /* 'info' file within that directory. <<
442 * but will remain valid iff cl_nfsd_d <<
443 */ <<
444 struct dentry *cl_nfsd_info_ <<
445 <<
446 /* for nfs41 callbacks */ 352 /* for nfs41 callbacks */
447 /* We currently support a single back 353 /* We currently support a single back channel with a single slot */
448 unsigned long cl_cb_slot_bus 354 unsigned long cl_cb_slot_busy;
449 struct rpc_wait_queue cl_cb_waitq; 355 struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */
450 356 /* wait here for slots */
451 struct net *net; 357 struct net *net;
452 struct list_head async_copies; <<
453 spinlock_t async_lock; <<
454 atomic_t cl_cb_inflight <<
455 <<
456 unsigned int cl_state; <<
457 atomic_t cl_delegs_in_r <<
458 <<
459 struct nfsd4_cb_recall_any *cl_ra <<
460 time64_t cl_ra_time; <<
461 struct list_head cl_ra_cblist; <<
462 }; 358 };
463 359
464 /* struct nfs4_client_reset 360 /* struct nfs4_client_reset
465 * one per old client. Populates reset_str_has 361 * one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl
466 * upon lease reset, or from upcall to state_d 362 * upon lease reset, or from upcall to state_daemon (to read in state
467 * from non-volitile storage) upon reboot. 363 * from non-volitile storage) upon reboot.
468 */ 364 */
469 struct nfs4_client_reclaim { 365 struct nfs4_client_reclaim {
470 struct list_head cr_strhash; 366 struct list_head cr_strhash; /* hash by cr_name */
471 struct nfs4_client *cr_clp; 367 struct nfs4_client *cr_clp; /* pointer to associated clp */
472 struct xdr_netobj cr_name; !! 368 char cr_recdir[HEXDIR_LEN]; /* recover dir */
473 struct xdr_netobj cr_princhash; <<
474 }; 369 };
475 370
476 /* A reasonable value for REPLAY_ISIZE was est 371 /* A reasonable value for REPLAY_ISIZE was estimated as follows:
477 * The OPEN response, typically the largest, r 372 * The OPEN response, typically the largest, requires
478 * 4(status) + 8(stateid) + 20(changeinfo) + 373 * 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) +
479 * 4(deleg. type) + 8(deleg. stateid) + 4(de 374 * 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) +
480 * 20(deleg. space limit) + ~32(deleg. ace) 375 * 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes
481 */ 376 */
482 377
483 #define NFSD4_REPLAY_ISIZE 112 378 #define NFSD4_REPLAY_ISIZE 112
484 379
485 /* 380 /*
486 * Replay buffer, where the result of the last 381 * Replay buffer, where the result of the last seqid-mutating operation
487 * is cached. 382 * is cached.
488 */ 383 */
489 struct nfs4_replay { 384 struct nfs4_replay {
490 __be32 rp_status; 385 __be32 rp_status;
491 unsigned int rp_buflen; 386 unsigned int rp_buflen;
492 char *rp_buf; 387 char *rp_buf;
493 struct knfsd_fh rp_openfh; 388 struct knfsd_fh rp_openfh;
494 atomic_t rp_locked; !! 389 struct mutex rp_mutex;
495 char rp_ibuf[NFSD4_ 390 char rp_ibuf[NFSD4_REPLAY_ISIZE];
496 }; 391 };
497 392
498 struct nfs4_stateowner; 393 struct nfs4_stateowner;
499 394
500 struct nfs4_stateowner_operations { 395 struct nfs4_stateowner_operations {
501 void (*so_unhash)(struct nfs4_stateown 396 void (*so_unhash)(struct nfs4_stateowner *);
502 void (*so_free)(struct nfs4_stateowner 397 void (*so_free)(struct nfs4_stateowner *);
503 }; 398 };
504 399
505 /* 400 /*
506 * A core object that represents either an ope 401 * A core object that represents either an open or lock owner. The object and
507 * lock owner objects have one of these embedd 402 * lock owner objects have one of these embedded within them. Refcounts and
508 * other fields common to both owner types are 403 * other fields common to both owner types are contained within these
509 * structures. 404 * structures.
510 */ 405 */
511 struct nfs4_stateowner { 406 struct nfs4_stateowner {
512 struct list_head 407 struct list_head so_strhash;
513 struct list_head 408 struct list_head so_stateids;
514 struct nfs4_client 409 struct nfs4_client *so_client;
515 const struct nfs4_stateowner_operation 410 const struct nfs4_stateowner_operations *so_ops;
516 /* after increment in nfsd4_bump_seqid 411 /* after increment in nfsd4_bump_seqid, represents the next
517 * sequence id expected from the clien 412 * sequence id expected from the client: */
518 atomic_t 413 atomic_t so_count;
519 u32 414 u32 so_seqid;
520 struct xdr_netobj 415 struct xdr_netobj so_owner; /* open owner name */
521 struct nfs4_replay 416 struct nfs4_replay so_replay;
522 bool 417 bool so_is_open_owner;
523 }; 418 };
524 419
525 /* 420 /*
526 * When a file is opened, the client provides 421 * When a file is opened, the client provides an open state owner opaque string
527 * that indicates the "owner" of that open. Th 422 * that indicates the "owner" of that open. These objects are refcounted.
528 * References to it are held by each open stat 423 * References to it are held by each open state associated with it. This object
529 * is a superset of the nfs4_stateowner struct 424 * is a superset of the nfs4_stateowner struct.
530 */ 425 */
531 struct nfs4_openowner { 426 struct nfs4_openowner {
532 struct nfs4_stateowner oo_owner; /* m 427 struct nfs4_stateowner oo_owner; /* must be first field */
533 struct list_head oo_perclient; 428 struct list_head oo_perclient;
534 /* 429 /*
535 * We keep around openowners a little 430 * We keep around openowners a little while after last close,
536 * which saves clients from having to 431 * which saves clients from having to confirm, and allows us to
537 * handle close replays if they come s 432 * handle close replays if they come soon enough. The close_lru
538 * is a list of such openowners, to be 433 * is a list of such openowners, to be reaped by the laundromat
539 * thread eventually if they remain un 434 * thread eventually if they remain unused:
540 */ 435 */
541 struct list_head oo_close_lru; 436 struct list_head oo_close_lru;
542 struct nfs4_ol_stateid *oo_last_closed 437 struct nfs4_ol_stateid *oo_last_closed_stid;
543 time64_t oo_time; /* ti !! 438 time_t oo_time; /* time of placement on so_close_lru */
544 #define NFS4_OO_CONFIRMED 1 439 #define NFS4_OO_CONFIRMED 1
545 unsigned char oo_flags; 440 unsigned char oo_flags;
546 }; 441 };
547 442
548 /* 443 /*
549 * Represents a generic "lockowner". Similar t 444 * Represents a generic "lockowner". Similar to an openowner. References to it
550 * are held by the lock stateids that are crea 445 * are held by the lock stateids that are created on its behalf. This object is
551 * a superset of the nfs4_stateowner struct. 446 * a superset of the nfs4_stateowner struct.
552 */ 447 */
553 struct nfs4_lockowner { 448 struct nfs4_lockowner {
554 struct nfs4_stateowner lo_owner; 449 struct nfs4_stateowner lo_owner; /* must be first element */
555 struct list_head lo_blocked; 450 struct list_head lo_blocked; /* blocked file_locks */
556 }; 451 };
557 452
558 static inline struct nfs4_openowner * openowne 453 static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so)
559 { 454 {
560 return container_of(so, struct nfs4_op 455 return container_of(so, struct nfs4_openowner, oo_owner);
561 } 456 }
562 457
563 static inline struct nfs4_lockowner * lockowne 458 static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so)
564 { 459 {
565 return container_of(so, struct nfs4_lo 460 return container_of(so, struct nfs4_lockowner, lo_owner);
566 } 461 }
567 462
568 /* 463 /*
569 * Per-client state indicating no. of opens an 464 * Per-client state indicating no. of opens and outstanding delegations
570 * on a file from a particular client.'od' sta 465 * on a file from a particular client.'od' stands for 'open & delegation'
571 */ 466 */
572 struct nfs4_clnt_odstate { 467 struct nfs4_clnt_odstate {
573 struct nfs4_client *co_client; 468 struct nfs4_client *co_client;
574 struct nfs4_file *co_file; 469 struct nfs4_file *co_file;
575 struct list_head co_perfile; 470 struct list_head co_perfile;
576 refcount_t co_odcount; 471 refcount_t co_odcount;
577 }; 472 };
578 473
579 /* 474 /*
580 * nfs4_file: a file opened by some number of 475 * nfs4_file: a file opened by some number of (open) nfs4_stateowners.
581 * 476 *
582 * These objects are global. nfsd keeps one in 477 * These objects are global. nfsd keeps one instance of a nfs4_file per
583 * filehandle (though it may keep multiple fil 478 * filehandle (though it may keep multiple file descriptors for each). Each
584 * inode can have multiple filehandles associa 479 * inode can have multiple filehandles associated with it, so there is
585 * (potentially) a many to one relationship be 480 * (potentially) a many to one relationship between this struct and struct
586 * inode. 481 * inode.
>> 482 *
>> 483 * These are hashed by filehandle in the file_hashtbl, which is protected by
>> 484 * the global state_lock spinlock.
587 */ 485 */
588 struct nfs4_file { 486 struct nfs4_file {
589 refcount_t fi_ref; 487 refcount_t fi_ref;
590 struct inode * fi_inode; <<
591 bool fi_aliased; <<
592 spinlock_t fi_lock; 488 spinlock_t fi_lock;
593 struct rhlist_head fi_rlist; !! 489 struct hlist_node fi_hash; /* hash on fi_fhandle */
594 struct list_head fi_stateids; 490 struct list_head fi_stateids;
595 union { 491 union {
596 struct list_head fi_del 492 struct list_head fi_delegations;
597 struct rcu_head fi_rcu 493 struct rcu_head fi_rcu;
598 }; 494 };
599 struct list_head fi_clnt_odstat 495 struct list_head fi_clnt_odstate;
600 /* One each for O_RDONLY, O_WRONLY, O_ 496 /* One each for O_RDONLY, O_WRONLY, O_RDWR: */
601 struct nfsd_file *fi_fds[3]; !! 497 struct file * fi_fds[3];
602 /* 498 /*
603 * Each open or lock stateid contribut 499 * Each open or lock stateid contributes 0-4 to the counts
604 * below depending on which bits are s 500 * below depending on which bits are set in st_access_bitmap:
605 * 1 to fi_access[O_RDONLY] if NFS 501 * 1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set
606 * + 1 to fi_access[O_WRONLY] if NFS 502 * + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set
607 * + 1 to both of the above if NFS4_ 503 * + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set.
608 */ 504 */
609 atomic_t fi_access[2]; 505 atomic_t fi_access[2];
610 u32 fi_share_deny; 506 u32 fi_share_deny;
611 struct nfsd_file *fi_deleg_file !! 507 struct file *fi_deleg_file;
612 int fi_delegees; 508 int fi_delegees;
613 struct knfsd_fh fi_fhandle; 509 struct knfsd_fh fi_fhandle;
614 bool fi_had_conflic 510 bool fi_had_conflict;
615 #ifdef CONFIG_NFSD_PNFS 511 #ifdef CONFIG_NFSD_PNFS
616 struct list_head fi_lo_states; 512 struct list_head fi_lo_states;
617 atomic_t fi_lo_recalls; 513 atomic_t fi_lo_recalls;
618 #endif 514 #endif
619 }; 515 };
620 516
621 /* 517 /*
622 * A generic struct representing either a open 518 * A generic struct representing either a open or lock stateid. The nfs4_client
623 * holds a reference to each of these objects, 519 * holds a reference to each of these objects, and they in turn hold a
624 * reference to their respective stateowners. 520 * reference to their respective stateowners. The client's reference is
625 * released in response to a close or unlock ( 521 * released in response to a close or unlock (depending on whether it's an open
626 * or lock stateid) or when the client is bein 522 * or lock stateid) or when the client is being destroyed.
627 * 523 *
628 * In the case of v4.0 open stateids, these ob 524 * In the case of v4.0 open stateids, these objects are preserved for a little
629 * while after close in order to handle CLOSE 525 * while after close in order to handle CLOSE replays. Those are eventually
630 * reclaimed via a LRU scheme by the laundroma 526 * reclaimed via a LRU scheme by the laundromat.
631 * 527 *
632 * This object is a superset of the nfs4_stid. 528 * This object is a superset of the nfs4_stid. "ol" stands for "Open or Lock".
633 * Better suggestions welcome. 529 * Better suggestions welcome.
634 */ 530 */
635 struct nfs4_ol_stateid { 531 struct nfs4_ol_stateid {
636 struct nfs4_stid st_sti 532 struct nfs4_stid st_stid;
637 struct list_head st_per 533 struct list_head st_perfile;
638 struct list_head st_per 534 struct list_head st_perstateowner;
639 struct list_head st_loc 535 struct list_head st_locks;
640 struct nfs4_stateowner *st_st 536 struct nfs4_stateowner *st_stateowner;
641 struct nfs4_clnt_odstate *st_cl 537 struct nfs4_clnt_odstate *st_clnt_odstate;
642 /* <<
643 * These bitmasks use 3 separate bits for READ <<
644 * comment above bmap_to_share_mode() for expl <<
645 */ <<
646 unsigned char st_acc 538 unsigned char st_access_bmap;
647 unsigned char st_den 539 unsigned char st_deny_bmap;
648 struct nfs4_ol_stateid *st_op 540 struct nfs4_ol_stateid *st_openstp;
649 struct mutex st_mut 541 struct mutex st_mutex;
650 }; 542 };
651 543
652 static inline struct nfs4_ol_stateid *openlock 544 static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s)
653 { 545 {
654 return container_of(s, struct nfs4_ol_ 546 return container_of(s, struct nfs4_ol_stateid, st_stid);
655 } 547 }
656 548
657 struct nfs4_layout_stateid { 549 struct nfs4_layout_stateid {
658 struct nfs4_stid ls_sti 550 struct nfs4_stid ls_stid;
659 struct list_head ls_per 551 struct list_head ls_perclnt;
660 struct list_head ls_per 552 struct list_head ls_perfile;
661 spinlock_t ls_loc 553 spinlock_t ls_lock;
662 struct list_head ls_lay 554 struct list_head ls_layouts;
663 u32 ls_lay 555 u32 ls_layout_type;
664 struct nfsd_file *ls_fi !! 556 struct file *ls_file;
665 struct nfsd4_callback ls_rec 557 struct nfsd4_callback ls_recall;
666 stateid_t ls_rec 558 stateid_t ls_recall_sid;
667 bool ls_rec 559 bool ls_recalled;
668 struct mutex ls_mut 560 struct mutex ls_mutex;
669 }; 561 };
670 562
671 static inline struct nfs4_layout_stateid *layo 563 static inline struct nfs4_layout_stateid *layoutstateid(struct nfs4_stid *s)
672 { 564 {
673 return container_of(s, struct nfs4_lay 565 return container_of(s, struct nfs4_layout_stateid, ls_stid);
674 } 566 }
675 567
676 /* flags for preprocess_seqid_op() */ 568 /* flags for preprocess_seqid_op() */
677 #define RD_STATE 0x00000010 569 #define RD_STATE 0x00000010
678 #define WR_STATE 0x00000020 570 #define WR_STATE 0x00000020
679 571
680 enum nfsd4_cb_op { 572 enum nfsd4_cb_op {
681 NFSPROC4_CLNT_CB_NULL = 0, 573 NFSPROC4_CLNT_CB_NULL = 0,
682 NFSPROC4_CLNT_CB_RECALL, 574 NFSPROC4_CLNT_CB_RECALL,
683 NFSPROC4_CLNT_CB_LAYOUT, 575 NFSPROC4_CLNT_CB_LAYOUT,
684 NFSPROC4_CLNT_CB_OFFLOAD, <<
685 NFSPROC4_CLNT_CB_SEQUENCE, 576 NFSPROC4_CLNT_CB_SEQUENCE,
686 NFSPROC4_CLNT_CB_NOTIFY_LOCK, 577 NFSPROC4_CLNT_CB_NOTIFY_LOCK,
687 NFSPROC4_CLNT_CB_RECALL_ANY, <<
688 NFSPROC4_CLNT_CB_GETATTR, <<
689 }; 578 };
690 579
691 /* Returns true iff a is later than b: */ 580 /* Returns true iff a is later than b: */
692 static inline bool nfsd4_stateid_generation_af 581 static inline bool nfsd4_stateid_generation_after(stateid_t *a, stateid_t *b)
693 { 582 {
694 return (s32)(a->si_generation - b->si_ 583 return (s32)(a->si_generation - b->si_generation) > 0;
695 } 584 }
696 585
697 /* 586 /*
698 * When a client tries to get a lock on a file 587 * When a client tries to get a lock on a file, we set one of these objects
699 * on the blocking lock. When the lock becomes 588 * on the blocking lock. When the lock becomes free, we can then issue a
700 * CB_NOTIFY_LOCK to the server. 589 * CB_NOTIFY_LOCK to the server.
701 */ 590 */
702 struct nfsd4_blocked_lock { 591 struct nfsd4_blocked_lock {
703 struct list_head nbl_list; 592 struct list_head nbl_list;
704 struct list_head nbl_lru; 593 struct list_head nbl_lru;
705 time64_t nbl_time; !! 594 unsigned long nbl_time;
706 struct file_lock nbl_lock; 595 struct file_lock nbl_lock;
707 struct knfsd_fh nbl_fh; 596 struct knfsd_fh nbl_fh;
708 struct nfsd4_callback nbl_cb; 597 struct nfsd4_callback nbl_cb;
709 struct kref nbl_kref; <<
710 }; 598 };
711 599
712 struct nfsd4_compound_state; 600 struct nfsd4_compound_state;
713 struct nfsd_net; 601 struct nfsd_net;
714 struct nfsd4_copy; <<
715 602
716 extern __be32 nfs4_preprocess_stateid_op(struc 603 extern __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
717 struct nfsd4_compound_state *c 604 struct nfsd4_compound_state *cstate, struct svc_fh *fhp,
718 stateid_t *stateid, int flags, !! 605 stateid_t *stateid, int flags, struct file **filp, bool *tmp_file);
719 struct nfs4_stid **cstid); <<
720 __be32 nfsd4_lookup_stateid(struct nfsd4_compo 606 __be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
721 stateid_t *stateid !! 607 stateid_t *stateid, unsigned char typemask,
722 unsigned short sta !! 608 struct nfs4_stid **s, struct nfsd_net *nn);
723 struct nfs4_stid * <<
724 struct nfs4_stid *nfs4_alloc_stid(struct nfs4_ 609 struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab,
725 void (*sc_fr 610 void (*sc_free)(struct nfs4_stid *));
726 int nfs4_init_copy_state(struct nfsd_net *nn, !! 611 void nfs4_unhash_stid(struct nfs4_stid *s);
727 void nfs4_free_copy_state(struct nfsd4_copy *c <<
728 struct nfs4_cpntf_state *nfs4_alloc_init_cpntf <<
729 struct nfs4_stid *p_st <<
730 void nfs4_put_stid(struct nfs4_stid *s); 612 void nfs4_put_stid(struct nfs4_stid *s);
731 void nfs4_inc_and_copy_stateid(stateid_t *dst, 613 void nfs4_inc_and_copy_stateid(stateid_t *dst, struct nfs4_stid *stid);
732 void nfs4_remove_reclaim_record(struct nfs4_cl 614 void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *);
733 extern void nfs4_release_reclaim(struct nfsd_n 615 extern void nfs4_release_reclaim(struct nfsd_net *);
734 extern struct nfs4_client_reclaim *nfsd4_find_ !! 616 extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(const char *recdir,
735 617 struct nfsd_net *nn);
736 extern __be32 nfs4_check_open_reclaim(struct n !! 618 extern __be32 nfs4_check_open_reclaim(clientid_t *clid,
>> 619 struct nfsd4_compound_state *cstate, struct nfsd_net *nn);
>> 620 extern int set_callback_cred(void);
>> 621 extern void cleanup_callback_cred(void);
737 extern void nfsd4_probe_callback(struct nfs4_c 622 extern void nfsd4_probe_callback(struct nfs4_client *clp);
738 extern void nfsd4_probe_callback_sync(struct n 623 extern void nfsd4_probe_callback_sync(struct nfs4_client *clp);
739 extern void nfsd4_change_callback(struct nfs4_ 624 extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *);
740 extern void nfsd4_init_cb(struct nfsd4_callbac 625 extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,
741 const struct nfsd4_callback_op 626 const struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op);
742 extern bool nfsd4_run_cb(struct nfsd4_callback !! 627 extern void nfsd4_run_cb(struct nfsd4_callback *cb);
>> 628 extern int nfsd4_create_callback_queue(void);
>> 629 extern void nfsd4_destroy_callback_queue(void);
743 extern void nfsd4_shutdown_callback(struct nfs 630 extern void nfsd4_shutdown_callback(struct nfs4_client *);
744 extern void nfsd4_shutdown_copy(struct nfs4_cl !! 631 extern void nfsd4_prepare_cb_recall(struct nfs4_delegation *dp);
745 extern struct nfs4_client_reclaim *nfs4_client !! 632 extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(const char *name,
746 struct xdr_net !! 633 struct nfsd_net *nn);
747 extern bool nfs4_has_reclaimed_state(struct xd !! 634 extern bool nfs4_has_reclaimed_state(const char *name, struct nfsd_net *nn);
748 635
>> 636 struct nfs4_file *find_file(struct knfsd_fh *fh);
749 void put_nfs4_file(struct nfs4_file *fi); 637 void put_nfs4_file(struct nfs4_file *fi);
750 extern void nfs4_put_cpntf_state(struct nfsd_n <<
751 struct nfs4_c <<
752 extern __be32 manage_cpntf_state(struct nfsd_n <<
753 struct nfs4_c <<
754 struct nfs4_c <<
755 static inline void get_nfs4_file(struct nfs4_f 638 static inline void get_nfs4_file(struct nfs4_file *fi)
756 { 639 {
757 refcount_inc(&fi->fi_ref); 640 refcount_inc(&fi->fi_ref);
758 } 641 }
759 struct nfsd_file *find_any_file(struct nfs4_fi !! 642 struct file *find_any_file(struct nfs4_file *f);
760 <<
761 #ifdef CONFIG_NFSD_V4 <<
762 void nfsd4_revoke_states(struct net *net, stru <<
763 #else <<
764 static inline void nfsd4_revoke_states(struct <<
765 { <<
766 } <<
767 #endif <<
768 643
769 /* grace period management */ 644 /* grace period management */
770 void nfsd4_end_grace(struct nfsd_net *nn); 645 void nfsd4_end_grace(struct nfsd_net *nn);
771 646
772 /* nfs4recover operations */ 647 /* nfs4recover operations */
773 extern int nfsd4_client_tracking_init(struct n 648 extern int nfsd4_client_tracking_init(struct net *net);
774 extern void nfsd4_client_tracking_exit(struct 649 extern void nfsd4_client_tracking_exit(struct net *net);
775 extern void nfsd4_client_record_create(struct 650 extern void nfsd4_client_record_create(struct nfs4_client *clp);
776 extern void nfsd4_client_record_remove(struct 651 extern void nfsd4_client_record_remove(struct nfs4_client *clp);
777 extern int nfsd4_client_record_check(struct nf 652 extern int nfsd4_client_record_check(struct nfs4_client *clp);
778 extern void nfsd4_record_grace_done(struct nfs 653 extern void nfsd4_record_grace_done(struct nfsd_net *nn);
779 654
780 static inline bool try_to_expire_client(struct !! 655 /* nfs fault injection functions */
781 { !! 656 #ifdef CONFIG_NFSD_FAULT_INJECTION
782 cmpxchg(&clp->cl_state, NFSD4_COURTESY !! 657 int nfsd_fault_inject_init(void);
783 return clp->cl_state == NFSD4_EXPIRABL !! 658 void nfsd_fault_inject_cleanup(void);
784 } !! 659
>> 660 u64 nfsd_inject_print_clients(void);
>> 661 u64 nfsd_inject_forget_client(struct sockaddr_storage *, size_t);
>> 662 u64 nfsd_inject_forget_clients(u64);
>> 663
>> 664 u64 nfsd_inject_print_locks(void);
>> 665 u64 nfsd_inject_forget_client_locks(struct sockaddr_storage *, size_t);
>> 666 u64 nfsd_inject_forget_locks(u64);
>> 667
>> 668 u64 nfsd_inject_print_openowners(void);
>> 669 u64 nfsd_inject_forget_client_openowners(struct sockaddr_storage *, size_t);
>> 670 u64 nfsd_inject_forget_openowners(u64);
>> 671
>> 672 u64 nfsd_inject_print_delegations(void);
>> 673 u64 nfsd_inject_forget_client_delegations(struct sockaddr_storage *, size_t);
>> 674 u64 nfsd_inject_forget_delegations(u64);
>> 675 u64 nfsd_inject_recall_client_delegations(struct sockaddr_storage *, size_t);
>> 676 u64 nfsd_inject_recall_delegations(u64);
>> 677 #else /* CONFIG_NFSD_FAULT_INJECTION */
>> 678 static inline int nfsd_fault_inject_init(void) { return 0; }
>> 679 static inline void nfsd_fault_inject_cleanup(void) {}
>> 680 #endif /* CONFIG_NFSD_FAULT_INJECTION */
785 681
786 extern __be32 nfsd4_deleg_getattr_conflict(str <<
787 struct dentry *dentry, bool *f <<
788 #endif /* NFSD4_STATE_H */ 682 #endif /* NFSD4_STATE_H */
789 683
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