Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/callback_proc.c | |
3 | * | |
4 | * Copyright (C) 2004 Trond Myklebust | |
5 | * | |
6 | * NFSv4 callback procedures | |
7 | */ | |
1da177e4 LT |
8 | #include <linux/nfs4.h> |
9 | #include <linux/nfs_fs.h> | |
5a0e3ad6 | 10 | #include <linux/slab.h> |
2446ab60 | 11 | #include <linux/rcupdate.h> |
4ce79717 | 12 | #include "nfs4_fs.h" |
1da177e4 LT |
13 | #include "callback.h" |
14 | #include "delegation.h" | |
24c8dbbb | 15 | #include "internal.h" |
43f1b3da | 16 | #include "pnfs.h" |
73e39aaa | 17 | #include "nfs4session.h" |
ca8acf8d | 18 | #include "nfs4trace.h" |
1da177e4 | 19 | |
1d98fe67 | 20 | #ifdef NFS_DEBUG |
1da177e4 | 21 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
1d98fe67 | 22 | #endif |
c36fca52 AA |
23 | |
24 | __be32 nfs4_callback_getattr(struct cb_getattrargs *args, | |
25 | struct cb_getattrres *res, | |
26 | struct cb_process_state *cps) | |
1da177e4 | 27 | { |
1da177e4 LT |
28 | struct nfs_delegation *delegation; |
29 | struct nfs_inode *nfsi; | |
30 | struct inode *inode; | |
1d98fe67 | 31 | |
c36fca52 AA |
32 | res->status = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
33 | if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ | |
34 | goto out; | |
35 | ||
1da177e4 LT |
36 | res->bitmap[0] = res->bitmap[1] = 0; |
37 | res->status = htonl(NFS4ERR_BADHANDLE); | |
1d98fe67 | 38 | |
2446ab60 | 39 | dprintk_rcu("NFS: GETATTR callback request from %s\n", |
c36fca52 | 40 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
1d98fe67 | 41 | |
c36fca52 | 42 | inode = nfs_delegation_find_inode(cps->clp, &args->fh); |
1da177e4 | 43 | if (inode == NULL) |
c36fca52 | 44 | goto out; |
1da177e4 | 45 | nfsi = NFS_I(inode); |
761fe93c TM |
46 | rcu_read_lock(); |
47 | delegation = rcu_dereference(nfsi->delegation); | |
1da177e4 LT |
48 | if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0) |
49 | goto out_iput; | |
50 | res->size = i_size_read(inode); | |
beb2a5ec | 51 | res->change_attr = delegation->change_attr; |
cb1410c7 | 52 | if (nfsi->nrequests != 0) |
beb2a5ec | 53 | res->change_attr++; |
1da177e4 LT |
54 | res->ctime = inode->i_ctime; |
55 | res->mtime = inode->i_mtime; | |
56 | res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) & | |
57 | args->bitmap[0]; | |
58 | res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) & | |
59 | args->bitmap[1]; | |
60 | res->status = 0; | |
61 | out_iput: | |
761fe93c | 62 | rcu_read_unlock(); |
1da177e4 | 63 | iput(inode); |
1da177e4 | 64 | out: |
3110ff80 | 65 | dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status)); |
1da177e4 LT |
66 | return res->status; |
67 | } | |
68 | ||
c36fca52 AA |
69 | __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, |
70 | struct cb_process_state *cps) | |
1da177e4 | 71 | { |
1da177e4 | 72 | struct inode *inode; |
e6f684f6 | 73 | __be32 res; |
1da177e4 | 74 | |
c36fca52 AA |
75 | res = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
76 | if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ | |
1da177e4 | 77 | goto out; |
1d98fe67 | 78 | |
2446ab60 | 79 | dprintk_rcu("NFS: RECALL callback request from %s\n", |
c36fca52 AA |
80 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
81 | ||
82 | res = htonl(NFS4ERR_BADHANDLE); | |
83 | inode = nfs_delegation_find_inode(cps->clp, &args->fh); | |
84 | if (inode == NULL) | |
85 | goto out; | |
86 | /* Set up a helper thread to actually return the delegation */ | |
87 | switch (nfs_async_inode_return_delegation(inode, &args->stateid)) { | |
88 | case 0: | |
89 | res = 0; | |
90 | break; | |
91 | case -ENOENT: | |
8e663f0e | 92 | res = htonl(NFS4ERR_BAD_STATEID); |
c36fca52 AA |
93 | break; |
94 | default: | |
95 | res = htonl(NFS4ERR_RESOURCE); | |
96 | } | |
ca8acf8d | 97 | trace_nfs4_recall_delegation(inode, -ntohl(res)); |
c36fca52 | 98 | iput(inode); |
1da177e4 | 99 | out: |
3110ff80 | 100 | dprintk("%s: exit with status = %d\n", __func__, ntohl(res)); |
1da177e4 LT |
101 | return res; |
102 | } | |
d49433e1 BH |
103 | |
104 | #if defined(CONFIG_NFS_V4_1) | |
105 | ||
d36b7cf7 BH |
106 | /* |
107 | * Lookup a layout by filehandle. | |
108 | * | |
109 | * Note: gets a refcount on the layout hdr and on its respective inode. | |
110 | * Caller must put the layout hdr and the inode. | |
111 | * | |
112 | * TODO: keep track of all layouts (and delegations) in a hash table | |
113 | * hashed by filehandle. | |
114 | */ | |
27999f25 TM |
115 | static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, |
116 | struct nfs_fh *fh, nfs4_stateid *stateid) | |
43f1b3da | 117 | { |
6382a441 | 118 | struct nfs_server *server; |
43f1b3da | 119 | struct inode *ino; |
d36b7cf7 | 120 | struct pnfs_layout_hdr *lo; |
43f1b3da | 121 | |
6382a441 WAA |
122 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { |
123 | list_for_each_entry(lo, &server->layouts, plh_layouts) { | |
27999f25 TM |
124 | if (!nfs4_stateid_match_other(&lo->plh_stateid, stateid)) |
125 | continue; | |
d36b7cf7 | 126 | if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh)) |
6382a441 WAA |
127 | continue; |
128 | ino = igrab(lo->plh_inode); | |
129 | if (!ino) | |
9a7fe9e8 | 130 | break; |
9c626381 TM |
131 | spin_lock(&ino->i_lock); |
132 | /* Is this layout in the process of being freed? */ | |
133 | if (NFS_I(ino)->layout != lo) { | |
134 | spin_unlock(&ino->i_lock); | |
135 | iput(ino); | |
9a7fe9e8 | 136 | break; |
9c626381 | 137 | } |
70c3bd2b | 138 | pnfs_get_layout_hdr(lo); |
9c626381 | 139 | spin_unlock(&ino->i_lock); |
d36b7cf7 | 140 | return lo; |
6382a441 | 141 | } |
43f1b3da | 142 | } |
d36b7cf7 BH |
143 | |
144 | return NULL; | |
145 | } | |
146 | ||
27999f25 TM |
147 | static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, |
148 | struct nfs_fh *fh, nfs4_stateid *stateid) | |
d36b7cf7 BH |
149 | { |
150 | struct pnfs_layout_hdr *lo; | |
151 | ||
152 | spin_lock(&clp->cl_lock); | |
153 | rcu_read_lock(); | |
27999f25 | 154 | lo = get_layout_by_fh_locked(clp, fh, stateid); |
6382a441 | 155 | rcu_read_unlock(); |
43f1b3da | 156 | spin_unlock(&clp->cl_lock); |
6382a441 | 157 | |
d36b7cf7 BH |
158 | return lo; |
159 | } | |
160 | ||
161 | static u32 initiate_file_draining(struct nfs_client *clp, | |
162 | struct cb_layoutrecallargs *args) | |
163 | { | |
164 | struct inode *ino; | |
165 | struct pnfs_layout_hdr *lo; | |
166 | u32 rv = NFS4ERR_NOMATCHING_LAYOUT; | |
167 | LIST_HEAD(free_me_list); | |
168 | ||
27999f25 | 169 | lo = get_layout_by_fh(clp, &args->cbl_fh, &args->cbl_stateid); |
d36b7cf7 | 170 | if (!lo) |
27999f25 | 171 | goto out; |
43f1b3da | 172 | |
d36b7cf7 | 173 | ino = lo->plh_inode; |
7c5d1875 CH |
174 | |
175 | spin_lock(&ino->i_lock); | |
176 | pnfs_set_layout_stateid(lo, &args->cbl_stateid, true); | |
177 | spin_unlock(&ino->i_lock); | |
178 | ||
179 | pnfs_layoutcommit_inode(ino, false); | |
180 | ||
43f1b3da FI |
181 | spin_lock(&ino->i_lock); |
182 | if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) || | |
49a85061 | 183 | pnfs_mark_matching_lsegs_invalid(lo, &free_me_list, |
c88953d8 | 184 | &args->cbl_range)) { |
43f1b3da | 185 | rv = NFS4ERR_DELAY; |
c88953d8 CH |
186 | goto unlock; |
187 | } | |
188 | ||
189 | if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) { | |
190 | NFS_SERVER(ino)->pnfs_curr_ld->return_range(lo, | |
191 | &args->cbl_range); | |
192 | } | |
193 | unlock: | |
43f1b3da FI |
194 | spin_unlock(&ino->i_lock); |
195 | pnfs_free_lseg_list(&free_me_list); | |
70c3bd2b | 196 | pnfs_put_layout_hdr(lo); |
43f1b3da | 197 | iput(ino); |
27999f25 | 198 | out: |
43f1b3da FI |
199 | return rv; |
200 | } | |
201 | ||
202 | static u32 initiate_bulk_draining(struct nfs_client *clp, | |
203 | struct cb_layoutrecallargs *args) | |
204 | { | |
fd9a8d71 | 205 | int stat; |
6382a441 | 206 | |
fd9a8d71 TM |
207 | if (args->cbl_recall_type == RETURN_FSID) |
208 | stat = pnfs_destroy_layouts_byfsid(clp, &args->cbl_fsid, true); | |
209 | else | |
210 | stat = pnfs_destroy_layouts_byclid(clp, true); | |
211 | if (stat != 0) | |
212 | return NFS4ERR_DELAY; | |
213 | return NFS4ERR_NOMATCHING_LAYOUT; | |
43f1b3da FI |
214 | } |
215 | ||
216 | static u32 do_callback_layoutrecall(struct nfs_client *clp, | |
217 | struct cb_layoutrecallargs *args) | |
218 | { | |
0cb3284b | 219 | u32 res; |
43f1b3da FI |
220 | |
221 | dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type); | |
43f1b3da FI |
222 | if (args->cbl_recall_type == RETURN_FILE) |
223 | res = initiate_file_draining(clp, args); | |
224 | else | |
225 | res = initiate_bulk_draining(clp, args); | |
43f1b3da FI |
226 | dprintk("%s returning %i\n", __func__, res); |
227 | return res; | |
228 | ||
229 | } | |
230 | ||
f2a62561 FI |
231 | __be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args, |
232 | void *dummy, struct cb_process_state *cps) | |
233 | { | |
43f1b3da FI |
234 | u32 res; |
235 | ||
236 | dprintk("%s: -->\n", __func__); | |
237 | ||
238 | if (cps->clp) | |
239 | res = do_callback_layoutrecall(cps->clp, args); | |
240 | else | |
241 | res = NFS4ERR_OP_NOT_IN_SESSION; | |
242 | ||
243 | dprintk("%s: exit with status = %d\n", __func__, res); | |
244 | return cpu_to_be32(res); | |
f2a62561 FI |
245 | } |
246 | ||
36840370 AB |
247 | static void pnfs_recall_all_layouts(struct nfs_client *clp) |
248 | { | |
249 | struct cb_layoutrecallargs args; | |
250 | ||
251 | /* Pretend we got a CB_LAYOUTRECALL(ALL) */ | |
252 | memset(&args, 0, sizeof(args)); | |
253 | args.cbl_recall_type = RETURN_ALL; | |
254 | /* FIXME we ignore errors, what should we do? */ | |
255 | do_callback_layoutrecall(clp, &args); | |
256 | } | |
257 | ||
1be5683b ME |
258 | __be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args, |
259 | void *dummy, struct cb_process_state *cps) | |
260 | { | |
261 | int i; | |
262 | __be32 res = 0; | |
263 | struct nfs_client *clp = cps->clp; | |
264 | struct nfs_server *server = NULL; | |
265 | ||
266 | dprintk("%s: -->\n", __func__); | |
267 | ||
268 | if (!clp) { | |
269 | res = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); | |
270 | goto out; | |
271 | } | |
272 | ||
273 | for (i = 0; i < args->ndevs; i++) { | |
274 | struct cb_devicenotifyitem *dev = &args->devs[i]; | |
275 | ||
276 | if (!server || | |
277 | server->pnfs_curr_ld->id != dev->cbd_layout_type) { | |
278 | rcu_read_lock(); | |
279 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) | |
280 | if (server->pnfs_curr_ld && | |
281 | server->pnfs_curr_ld->id == dev->cbd_layout_type) { | |
282 | rcu_read_unlock(); | |
283 | goto found; | |
284 | } | |
285 | rcu_read_unlock(); | |
286 | dprintk("%s: layout type %u not found\n", | |
287 | __func__, dev->cbd_layout_type); | |
288 | continue; | |
289 | } | |
290 | ||
291 | found: | |
35c8bb54 | 292 | nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id); |
1be5683b ME |
293 | } |
294 | ||
295 | out: | |
296 | kfree(args->devs); | |
297 | dprintk("%s: exit with status = %u\n", | |
298 | __func__, be32_to_cpu(res)); | |
299 | return res; | |
300 | } | |
301 | ||
68f3f901 RL |
302 | /* |
303 | * Validate the sequenceID sent by the server. | |
304 | * Return success if the sequenceID is one more than what we last saw on | |
305 | * this slot, accounting for wraparound. Increments the slot's sequence. | |
306 | * | |
4911096f AA |
307 | * We don't yet implement a duplicate request cache, instead we set the |
308 | * back channel ca_maxresponsesize_cached to zero. This is OK for now | |
68f3f901 RL |
309 | * since we only currently implement idempotent callbacks anyway. |
310 | * | |
311 | * We have a single slot backchannel at this time, so we don't bother | |
312 | * checking the used_slots bit array on the table. The lower layer guarantees | |
313 | * a single outstanding callback request at a time. | |
314 | */ | |
9733f0d9 | 315 | static __be32 |
b2f28bd7 | 316 | validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args) |
68f3f901 RL |
317 | { |
318 | struct nfs4_slot *slot; | |
319 | ||
e8d92382 | 320 | dprintk("%s enter. slotid %u seqid %u\n", |
b2f28bd7 | 321 | __func__, args->csa_slotid, args->csa_sequenceid); |
68f3f901 | 322 | |
61f2e510 | 323 | if (args->csa_slotid >= NFS41_BC_MAX_CALLBACKS) |
68f3f901 RL |
324 | return htonl(NFS4ERR_BADSLOT); |
325 | ||
b2f28bd7 | 326 | slot = tbl->slots + args->csa_slotid; |
e8d92382 | 327 | dprintk("%s slot table seqid: %u\n", __func__, slot->seq_nr); |
68f3f901 RL |
328 | |
329 | /* Normal */ | |
b2f28bd7 | 330 | if (likely(args->csa_sequenceid == slot->seq_nr + 1)) { |
68f3f901 | 331 | slot->seq_nr++; |
55a67399 | 332 | goto out_ok; |
68f3f901 RL |
333 | } |
334 | ||
335 | /* Replay */ | |
b2f28bd7 | 336 | if (args->csa_sequenceid == slot->seq_nr) { |
e8d92382 | 337 | dprintk("%s seqid %u is a replay\n", |
b2f28bd7 | 338 | __func__, args->csa_sequenceid); |
4911096f AA |
339 | /* Signal process_op to set this error on next op */ |
340 | if (args->csa_cachethis == 0) | |
341 | return htonl(NFS4ERR_RETRY_UNCACHED_REP); | |
342 | ||
343 | /* The ca_maxresponsesize_cached is 0 with no DRC */ | |
344 | else if (args->csa_cachethis == 1) | |
345 | return htonl(NFS4ERR_REP_TOO_BIG_TO_CACHE); | |
68f3f901 RL |
346 | } |
347 | ||
348 | /* Wraparound */ | |
b2f28bd7 | 349 | if (args->csa_sequenceid == 1 && (slot->seq_nr + 1) == 0) { |
68f3f901 | 350 | slot->seq_nr = 1; |
55a67399 | 351 | goto out_ok; |
68f3f901 RL |
352 | } |
353 | ||
354 | /* Misordered request */ | |
355 | return htonl(NFS4ERR_SEQ_MISORDERED); | |
55a67399 TM |
356 | out_ok: |
357 | tbl->highest_used_slotid = args->csa_slotid; | |
358 | return htonl(NFS4_OK); | |
68f3f901 RL |
359 | } |
360 | ||
a7989c3e MS |
361 | /* |
362 | * For each referring call triple, check the session's slot table for | |
363 | * a match. If the slot is in use and the sequence numbers match, the | |
364 | * client is still waiting for a response to the original request. | |
365 | */ | |
366 | static bool referring_call_exists(struct nfs_client *clp, | |
367 | uint32_t nrclists, | |
368 | struct referring_call_list *rclists) | |
369 | { | |
370 | bool status = 0; | |
371 | int i, j; | |
372 | struct nfs4_session *session; | |
373 | struct nfs4_slot_table *tbl; | |
374 | struct referring_call_list *rclist; | |
375 | struct referring_call *ref; | |
376 | ||
377 | /* | |
378 | * XXX When client trunking is implemented, this becomes | |
379 | * a session lookup from within the loop | |
380 | */ | |
381 | session = clp->cl_session; | |
382 | tbl = &session->fc_slot_table; | |
383 | ||
384 | for (i = 0; i < nrclists; i++) { | |
385 | rclist = &rclists[i]; | |
386 | if (memcmp(session->sess_id.data, | |
387 | rclist->rcl_sessionid.data, | |
388 | NFS4_MAX_SESSIONID_LEN) != 0) | |
389 | continue; | |
390 | ||
391 | for (j = 0; j < rclist->rcl_nrefcalls; j++) { | |
392 | ref = &rclist->rcl_refcalls[j]; | |
393 | ||
394 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u " | |
395 | "slotid %u\n", __func__, | |
396 | ((u32 *)&rclist->rcl_sessionid.data)[0], | |
397 | ((u32 *)&rclist->rcl_sessionid.data)[1], | |
398 | ((u32 *)&rclist->rcl_sessionid.data)[2], | |
399 | ((u32 *)&rclist->rcl_sessionid.data)[3], | |
400 | ref->rc_sequenceid, ref->rc_slotid); | |
401 | ||
402 | spin_lock(&tbl->slot_tbl_lock); | |
403 | status = (test_bit(ref->rc_slotid, tbl->used_slots) && | |
404 | tbl->slots[ref->rc_slotid].seq_nr == | |
405 | ref->rc_sequenceid); | |
406 | spin_unlock(&tbl->slot_tbl_lock); | |
407 | if (status) | |
408 | goto out; | |
409 | } | |
410 | } | |
411 | ||
412 | out: | |
413 | return status; | |
414 | } | |
415 | ||
9733f0d9 | 416 | __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, |
c36fca52 AA |
417 | struct cb_sequenceres *res, |
418 | struct cb_process_state *cps) | |
d49433e1 | 419 | { |
55a67399 | 420 | struct nfs4_slot_table *tbl; |
68f3f901 | 421 | struct nfs_client *clp; |
9733f0d9 | 422 | int i; |
778be232 | 423 | __be32 status = htonl(NFS4ERR_BADSESSION); |
d49433e1 | 424 | |
459de2ed BS |
425 | clp = nfs4_find_client_sessionid(cps->net, args->csa_addr, |
426 | &args->csa_sessionid, cps->minorversion); | |
68f3f901 RL |
427 | if (clp == NULL) |
428 | goto out; | |
429 | ||
55a67399 TM |
430 | tbl = &clp->cl_session->bc_slot_table; |
431 | ||
432 | spin_lock(&tbl->slot_tbl_lock); | |
42acd021 | 433 | /* state manager is resetting the session */ |
774d5f14 | 434 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state)) { |
55a67399 TM |
435 | spin_unlock(&tbl->slot_tbl_lock); |
436 | status = htonl(NFS4ERR_DELAY); | |
910ac68a TM |
437 | /* Return NFS4ERR_BADSESSION if we're draining the session |
438 | * in order to reset it. | |
439 | */ | |
440 | if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) | |
441 | status = htonl(NFS4ERR_BADSESSION); | |
42acd021 AA |
442 | goto out; |
443 | } | |
444 | ||
b2f28bd7 | 445 | status = validate_seqid(&clp->cl_session->bc_slot_table, args); |
55a67399 | 446 | spin_unlock(&tbl->slot_tbl_lock); |
68f3f901 | 447 | if (status) |
c36fca52 | 448 | goto out; |
68f3f901 | 449 | |
55a67399 TM |
450 | cps->slotid = args->csa_slotid; |
451 | ||
72ce2b3c MS |
452 | /* |
453 | * Check for pending referring calls. If a match is found, a | |
454 | * related callback was received before the response to the original | |
455 | * call. | |
456 | */ | |
457 | if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) { | |
458 | status = htonl(NFS4ERR_DELAY); | |
c36fca52 | 459 | goto out; |
72ce2b3c MS |
460 | } |
461 | ||
d49433e1 BH |
462 | memcpy(&res->csr_sessionid, &args->csa_sessionid, |
463 | sizeof(res->csr_sessionid)); | |
464 | res->csr_sequenceid = args->csa_sequenceid; | |
465 | res->csr_slotid = args->csa_slotid; | |
466 | res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1; | |
467 | res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1; | |
468 | ||
68f3f901 | 469 | out: |
2c4cdf8f | 470 | cps->clp = clp; /* put in nfs4_callback_compound */ |
72ce2b3c MS |
471 | for (i = 0; i < args->csa_nrclists; i++) |
472 | kfree(args->csa_rclists[i].rcl_refcalls); | |
473 | kfree(args->csa_rclists); | |
474 | ||
c36fca52 AA |
475 | if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) { |
476 | cps->drc_status = status; | |
477 | status = 0; | |
478 | } else | |
4911096f | 479 | res->csr_status = status; |
c36fca52 | 480 | |
2f92ae34 | 481 | trace_nfs4_cb_sequence(args, res, status); |
4911096f AA |
482 | dprintk("%s: exit with status = %d res->csr_status %d\n", __func__, |
483 | ntohl(status), ntohl(res->csr_status)); | |
484 | return status; | |
d49433e1 BH |
485 | } |
486 | ||
36840370 AB |
487 | static bool |
488 | validate_bitmap_values(unsigned long mask) | |
489 | { | |
490 | return (mask & ~RCA4_TYPE_MASK_ALL) == 0; | |
491 | } | |
492 | ||
c36fca52 AA |
493 | __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy, |
494 | struct cb_process_state *cps) | |
31f09607 | 495 | { |
9733f0d9 | 496 | __be32 status; |
31f09607 AB |
497 | fmode_t flags = 0; |
498 | ||
36840370 | 499 | status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); |
c36fca52 | 500 | if (!cps->clp) /* set in cb_sequence */ |
31f09607 AB |
501 | goto out; |
502 | ||
2446ab60 | 503 | dprintk_rcu("NFS: RECALL_ANY callback request from %s\n", |
c36fca52 | 504 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
31f09607 | 505 | |
36840370 AB |
506 | status = cpu_to_be32(NFS4ERR_INVAL); |
507 | if (!validate_bitmap_values(args->craa_type_mask)) | |
508 | goto out; | |
509 | ||
510 | status = cpu_to_be32(NFS4_OK); | |
31f09607 AB |
511 | if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *) |
512 | &args->craa_type_mask)) | |
513 | flags = FMODE_READ; | |
514 | if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *) | |
515 | &args->craa_type_mask)) | |
516 | flags |= FMODE_WRITE; | |
36840370 AB |
517 | if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *) |
518 | &args->craa_type_mask)) | |
519 | pnfs_recall_all_layouts(cps->clp); | |
31f09607 | 520 | if (flags) |
826e0013 | 521 | nfs_expire_unused_delegation_types(cps->clp, flags); |
31f09607 AB |
522 | out: |
523 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
524 | return status; | |
525 | } | |
b9efa1b2 AA |
526 | |
527 | /* Reduce the fore channel's max_slots to the target value */ | |
c36fca52 AA |
528 | __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy, |
529 | struct cb_process_state *cps) | |
b9efa1b2 | 530 | { |
b9efa1b2 | 531 | struct nfs4_slot_table *fc_tbl; |
9733f0d9 | 532 | __be32 status; |
b9efa1b2 AA |
533 | |
534 | status = htonl(NFS4ERR_OP_NOT_IN_SESSION); | |
c36fca52 | 535 | if (!cps->clp) /* set in cb_sequence */ |
b9efa1b2 AA |
536 | goto out; |
537 | ||
e8d92382 | 538 | dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target highest slotid %u\n", |
c36fca52 | 539 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR), |
d5fb4ce3 | 540 | args->crsa_target_highest_slotid); |
b9efa1b2 | 541 | |
c36fca52 | 542 | fc_tbl = &cps->clp->cl_session->fc_slot_table; |
b9efa1b2 | 543 | |
bae0ac0e | 544 | status = htonl(NFS4_OK); |
b9efa1b2 | 545 | |
d5fb4ce3 | 546 | nfs41_set_target_slotid(fc_tbl, args->crsa_target_highest_slotid); |
ac074835 | 547 | nfs41_server_notify_target_slotid_update(cps->clp); |
b9efa1b2 AA |
548 | out: |
549 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
550 | return status; | |
551 | } | |
d49433e1 | 552 | #endif /* CONFIG_NFS_V4_1 */ |