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 TM |
51 | res->change_attr = delegation->change_attr; |
52 | if (nfsi->npages != 0) | |
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 | */ | |
115 | static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, struct nfs_fh *fh) | |
43f1b3da | 116 | { |
6382a441 | 117 | struct nfs_server *server; |
43f1b3da | 118 | struct inode *ino; |
d36b7cf7 | 119 | struct pnfs_layout_hdr *lo; |
43f1b3da | 120 | |
6382a441 WAA |
121 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { |
122 | list_for_each_entry(lo, &server->layouts, plh_layouts) { | |
d36b7cf7 | 123 | if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh)) |
6382a441 WAA |
124 | continue; |
125 | ino = igrab(lo->plh_inode); | |
126 | if (!ino) | |
127 | continue; | |
9c626381 TM |
128 | spin_lock(&ino->i_lock); |
129 | /* Is this layout in the process of being freed? */ | |
130 | if (NFS_I(ino)->layout != lo) { | |
131 | spin_unlock(&ino->i_lock); | |
132 | iput(ino); | |
133 | continue; | |
134 | } | |
70c3bd2b | 135 | pnfs_get_layout_hdr(lo); |
9c626381 | 136 | spin_unlock(&ino->i_lock); |
d36b7cf7 | 137 | return lo; |
6382a441 | 138 | } |
43f1b3da | 139 | } |
d36b7cf7 BH |
140 | |
141 | return NULL; | |
142 | } | |
143 | ||
144 | static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, struct nfs_fh *fh) | |
145 | { | |
146 | struct pnfs_layout_hdr *lo; | |
147 | ||
148 | spin_lock(&clp->cl_lock); | |
149 | rcu_read_lock(); | |
150 | lo = get_layout_by_fh_locked(clp, fh); | |
6382a441 | 151 | rcu_read_unlock(); |
43f1b3da | 152 | spin_unlock(&clp->cl_lock); |
6382a441 | 153 | |
d36b7cf7 BH |
154 | return lo; |
155 | } | |
156 | ||
157 | static u32 initiate_file_draining(struct nfs_client *clp, | |
158 | struct cb_layoutrecallargs *args) | |
159 | { | |
160 | struct inode *ino; | |
161 | struct pnfs_layout_hdr *lo; | |
162 | u32 rv = NFS4ERR_NOMATCHING_LAYOUT; | |
163 | LIST_HEAD(free_me_list); | |
164 | ||
165 | lo = get_layout_by_fh(clp, &args->cbl_fh); | |
166 | if (!lo) | |
43f1b3da FI |
167 | return NFS4ERR_NOMATCHING_LAYOUT; |
168 | ||
d36b7cf7 | 169 | ino = lo->plh_inode; |
43f1b3da FI |
170 | spin_lock(&ino->i_lock); |
171 | if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) || | |
49a85061 | 172 | pnfs_mark_matching_lsegs_invalid(lo, &free_me_list, |
778b5502 | 173 | &args->cbl_range)) |
43f1b3da FI |
174 | rv = NFS4ERR_DELAY; |
175 | else | |
176 | rv = NFS4ERR_NOMATCHING_LAYOUT; | |
177 | pnfs_set_layout_stateid(lo, &args->cbl_stateid, true); | |
178 | spin_unlock(&ino->i_lock); | |
179 | pnfs_free_lseg_list(&free_me_list); | |
70c3bd2b | 180 | pnfs_put_layout_hdr(lo); |
43f1b3da FI |
181 | iput(ino); |
182 | return rv; | |
183 | } | |
184 | ||
185 | static u32 initiate_bulk_draining(struct nfs_client *clp, | |
186 | struct cb_layoutrecallargs *args) | |
187 | { | |
fd9a8d71 | 188 | int stat; |
6382a441 | 189 | |
fd9a8d71 TM |
190 | if (args->cbl_recall_type == RETURN_FSID) |
191 | stat = pnfs_destroy_layouts_byfsid(clp, &args->cbl_fsid, true); | |
192 | else | |
193 | stat = pnfs_destroy_layouts_byclid(clp, true); | |
194 | if (stat != 0) | |
195 | return NFS4ERR_DELAY; | |
196 | return NFS4ERR_NOMATCHING_LAYOUT; | |
43f1b3da FI |
197 | } |
198 | ||
199 | static u32 do_callback_layoutrecall(struct nfs_client *clp, | |
200 | struct cb_layoutrecallargs *args) | |
201 | { | |
0cb3284b | 202 | u32 res; |
43f1b3da FI |
203 | |
204 | dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type); | |
43f1b3da FI |
205 | if (args->cbl_recall_type == RETURN_FILE) |
206 | res = initiate_file_draining(clp, args); | |
207 | else | |
208 | res = initiate_bulk_draining(clp, args); | |
43f1b3da FI |
209 | dprintk("%s returning %i\n", __func__, res); |
210 | return res; | |
211 | ||
212 | } | |
213 | ||
f2a62561 FI |
214 | __be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args, |
215 | void *dummy, struct cb_process_state *cps) | |
216 | { | |
43f1b3da FI |
217 | u32 res; |
218 | ||
219 | dprintk("%s: -->\n", __func__); | |
220 | ||
221 | if (cps->clp) | |
222 | res = do_callback_layoutrecall(cps->clp, args); | |
223 | else | |
224 | res = NFS4ERR_OP_NOT_IN_SESSION; | |
225 | ||
226 | dprintk("%s: exit with status = %d\n", __func__, res); | |
227 | return cpu_to_be32(res); | |
f2a62561 FI |
228 | } |
229 | ||
36840370 AB |
230 | static void pnfs_recall_all_layouts(struct nfs_client *clp) |
231 | { | |
232 | struct cb_layoutrecallargs args; | |
233 | ||
234 | /* Pretend we got a CB_LAYOUTRECALL(ALL) */ | |
235 | memset(&args, 0, sizeof(args)); | |
236 | args.cbl_recall_type = RETURN_ALL; | |
237 | /* FIXME we ignore errors, what should we do? */ | |
238 | do_callback_layoutrecall(clp, &args); | |
239 | } | |
240 | ||
1be5683b ME |
241 | __be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args, |
242 | void *dummy, struct cb_process_state *cps) | |
243 | { | |
244 | int i; | |
245 | __be32 res = 0; | |
246 | struct nfs_client *clp = cps->clp; | |
247 | struct nfs_server *server = NULL; | |
248 | ||
249 | dprintk("%s: -->\n", __func__); | |
250 | ||
251 | if (!clp) { | |
252 | res = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); | |
253 | goto out; | |
254 | } | |
255 | ||
256 | for (i = 0; i < args->ndevs; i++) { | |
257 | struct cb_devicenotifyitem *dev = &args->devs[i]; | |
258 | ||
259 | if (!server || | |
260 | server->pnfs_curr_ld->id != dev->cbd_layout_type) { | |
261 | rcu_read_lock(); | |
262 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) | |
263 | if (server->pnfs_curr_ld && | |
264 | server->pnfs_curr_ld->id == dev->cbd_layout_type) { | |
265 | rcu_read_unlock(); | |
266 | goto found; | |
267 | } | |
268 | rcu_read_unlock(); | |
269 | dprintk("%s: layout type %u not found\n", | |
270 | __func__, dev->cbd_layout_type); | |
271 | continue; | |
272 | } | |
273 | ||
274 | found: | |
275 | if (dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) | |
276 | dprintk("%s: NOTIFY_DEVICEID4_CHANGE not supported, " | |
277 | "deleting instead\n", __func__); | |
35c8bb54 | 278 | nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id); |
1be5683b ME |
279 | } |
280 | ||
281 | out: | |
282 | kfree(args->devs); | |
283 | dprintk("%s: exit with status = %u\n", | |
284 | __func__, be32_to_cpu(res)); | |
285 | return res; | |
286 | } | |
287 | ||
68f3f901 RL |
288 | /* |
289 | * Validate the sequenceID sent by the server. | |
290 | * Return success if the sequenceID is one more than what we last saw on | |
291 | * this slot, accounting for wraparound. Increments the slot's sequence. | |
292 | * | |
4911096f AA |
293 | * We don't yet implement a duplicate request cache, instead we set the |
294 | * back channel ca_maxresponsesize_cached to zero. This is OK for now | |
68f3f901 RL |
295 | * since we only currently implement idempotent callbacks anyway. |
296 | * | |
297 | * We have a single slot backchannel at this time, so we don't bother | |
298 | * checking the used_slots bit array on the table. The lower layer guarantees | |
299 | * a single outstanding callback request at a time. | |
300 | */ | |
9733f0d9 | 301 | static __be32 |
b2f28bd7 | 302 | validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args) |
68f3f901 RL |
303 | { |
304 | struct nfs4_slot *slot; | |
305 | ||
e8d92382 | 306 | dprintk("%s enter. slotid %u seqid %u\n", |
b2f28bd7 | 307 | __func__, args->csa_slotid, args->csa_sequenceid); |
68f3f901 | 308 | |
61f2e510 | 309 | if (args->csa_slotid >= NFS41_BC_MAX_CALLBACKS) |
68f3f901 RL |
310 | return htonl(NFS4ERR_BADSLOT); |
311 | ||
b2f28bd7 | 312 | slot = tbl->slots + args->csa_slotid; |
e8d92382 | 313 | dprintk("%s slot table seqid: %u\n", __func__, slot->seq_nr); |
68f3f901 RL |
314 | |
315 | /* Normal */ | |
b2f28bd7 | 316 | if (likely(args->csa_sequenceid == slot->seq_nr + 1)) { |
68f3f901 | 317 | slot->seq_nr++; |
55a67399 | 318 | goto out_ok; |
68f3f901 RL |
319 | } |
320 | ||
321 | /* Replay */ | |
b2f28bd7 | 322 | if (args->csa_sequenceid == slot->seq_nr) { |
e8d92382 | 323 | dprintk("%s seqid %u is a replay\n", |
b2f28bd7 | 324 | __func__, args->csa_sequenceid); |
4911096f AA |
325 | /* Signal process_op to set this error on next op */ |
326 | if (args->csa_cachethis == 0) | |
327 | return htonl(NFS4ERR_RETRY_UNCACHED_REP); | |
328 | ||
329 | /* The ca_maxresponsesize_cached is 0 with no DRC */ | |
330 | else if (args->csa_cachethis == 1) | |
331 | return htonl(NFS4ERR_REP_TOO_BIG_TO_CACHE); | |
68f3f901 RL |
332 | } |
333 | ||
334 | /* Wraparound */ | |
b2f28bd7 | 335 | if (args->csa_sequenceid == 1 && (slot->seq_nr + 1) == 0) { |
68f3f901 | 336 | slot->seq_nr = 1; |
55a67399 | 337 | goto out_ok; |
68f3f901 RL |
338 | } |
339 | ||
340 | /* Misordered request */ | |
341 | return htonl(NFS4ERR_SEQ_MISORDERED); | |
55a67399 TM |
342 | out_ok: |
343 | tbl->highest_used_slotid = args->csa_slotid; | |
344 | return htonl(NFS4_OK); | |
68f3f901 RL |
345 | } |
346 | ||
a7989c3e MS |
347 | /* |
348 | * For each referring call triple, check the session's slot table for | |
349 | * a match. If the slot is in use and the sequence numbers match, the | |
350 | * client is still waiting for a response to the original request. | |
351 | */ | |
352 | static bool referring_call_exists(struct nfs_client *clp, | |
353 | uint32_t nrclists, | |
354 | struct referring_call_list *rclists) | |
355 | { | |
356 | bool status = 0; | |
357 | int i, j; | |
358 | struct nfs4_session *session; | |
359 | struct nfs4_slot_table *tbl; | |
360 | struct referring_call_list *rclist; | |
361 | struct referring_call *ref; | |
362 | ||
363 | /* | |
364 | * XXX When client trunking is implemented, this becomes | |
365 | * a session lookup from within the loop | |
366 | */ | |
367 | session = clp->cl_session; | |
368 | tbl = &session->fc_slot_table; | |
369 | ||
370 | for (i = 0; i < nrclists; i++) { | |
371 | rclist = &rclists[i]; | |
372 | if (memcmp(session->sess_id.data, | |
373 | rclist->rcl_sessionid.data, | |
374 | NFS4_MAX_SESSIONID_LEN) != 0) | |
375 | continue; | |
376 | ||
377 | for (j = 0; j < rclist->rcl_nrefcalls; j++) { | |
378 | ref = &rclist->rcl_refcalls[j]; | |
379 | ||
380 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u " | |
381 | "slotid %u\n", __func__, | |
382 | ((u32 *)&rclist->rcl_sessionid.data)[0], | |
383 | ((u32 *)&rclist->rcl_sessionid.data)[1], | |
384 | ((u32 *)&rclist->rcl_sessionid.data)[2], | |
385 | ((u32 *)&rclist->rcl_sessionid.data)[3], | |
386 | ref->rc_sequenceid, ref->rc_slotid); | |
387 | ||
388 | spin_lock(&tbl->slot_tbl_lock); | |
389 | status = (test_bit(ref->rc_slotid, tbl->used_slots) && | |
390 | tbl->slots[ref->rc_slotid].seq_nr == | |
391 | ref->rc_sequenceid); | |
392 | spin_unlock(&tbl->slot_tbl_lock); | |
393 | if (status) | |
394 | goto out; | |
395 | } | |
396 | } | |
397 | ||
398 | out: | |
399 | return status; | |
400 | } | |
401 | ||
9733f0d9 | 402 | __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, |
c36fca52 AA |
403 | struct cb_sequenceres *res, |
404 | struct cb_process_state *cps) | |
d49433e1 | 405 | { |
55a67399 | 406 | struct nfs4_slot_table *tbl; |
68f3f901 | 407 | struct nfs_client *clp; |
9733f0d9 | 408 | int i; |
778be232 | 409 | __be32 status = htonl(NFS4ERR_BADSESSION); |
d49433e1 | 410 | |
459de2ed BS |
411 | clp = nfs4_find_client_sessionid(cps->net, args->csa_addr, |
412 | &args->csa_sessionid, cps->minorversion); | |
68f3f901 RL |
413 | if (clp == NULL) |
414 | goto out; | |
415 | ||
55a67399 TM |
416 | tbl = &clp->cl_session->bc_slot_table; |
417 | ||
418 | spin_lock(&tbl->slot_tbl_lock); | |
42acd021 | 419 | /* state manager is resetting the session */ |
774d5f14 | 420 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state)) { |
55a67399 TM |
421 | spin_unlock(&tbl->slot_tbl_lock); |
422 | status = htonl(NFS4ERR_DELAY); | |
910ac68a TM |
423 | /* Return NFS4ERR_BADSESSION if we're draining the session |
424 | * in order to reset it. | |
425 | */ | |
426 | if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) | |
427 | status = htonl(NFS4ERR_BADSESSION); | |
42acd021 AA |
428 | goto out; |
429 | } | |
430 | ||
b2f28bd7 | 431 | status = validate_seqid(&clp->cl_session->bc_slot_table, args); |
55a67399 | 432 | spin_unlock(&tbl->slot_tbl_lock); |
68f3f901 | 433 | if (status) |
c36fca52 | 434 | goto out; |
68f3f901 | 435 | |
55a67399 TM |
436 | cps->slotid = args->csa_slotid; |
437 | ||
72ce2b3c MS |
438 | /* |
439 | * Check for pending referring calls. If a match is found, a | |
440 | * related callback was received before the response to the original | |
441 | * call. | |
442 | */ | |
443 | if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) { | |
444 | status = htonl(NFS4ERR_DELAY); | |
c36fca52 | 445 | goto out; |
72ce2b3c MS |
446 | } |
447 | ||
d49433e1 BH |
448 | memcpy(&res->csr_sessionid, &args->csa_sessionid, |
449 | sizeof(res->csr_sessionid)); | |
450 | res->csr_sequenceid = args->csa_sequenceid; | |
451 | res->csr_slotid = args->csa_slotid; | |
452 | res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1; | |
453 | res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1; | |
454 | ||
68f3f901 | 455 | out: |
2c4cdf8f | 456 | cps->clp = clp; /* put in nfs4_callback_compound */ |
72ce2b3c MS |
457 | for (i = 0; i < args->csa_nrclists; i++) |
458 | kfree(args->csa_rclists[i].rcl_refcalls); | |
459 | kfree(args->csa_rclists); | |
460 | ||
c36fca52 AA |
461 | if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) { |
462 | cps->drc_status = status; | |
463 | status = 0; | |
464 | } else | |
4911096f | 465 | res->csr_status = status; |
c36fca52 | 466 | |
2f92ae34 | 467 | trace_nfs4_cb_sequence(args, res, status); |
4911096f AA |
468 | dprintk("%s: exit with status = %d res->csr_status %d\n", __func__, |
469 | ntohl(status), ntohl(res->csr_status)); | |
470 | return status; | |
d49433e1 BH |
471 | } |
472 | ||
36840370 AB |
473 | static bool |
474 | validate_bitmap_values(unsigned long mask) | |
475 | { | |
476 | return (mask & ~RCA4_TYPE_MASK_ALL) == 0; | |
477 | } | |
478 | ||
c36fca52 AA |
479 | __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy, |
480 | struct cb_process_state *cps) | |
31f09607 | 481 | { |
9733f0d9 | 482 | __be32 status; |
31f09607 AB |
483 | fmode_t flags = 0; |
484 | ||
36840370 | 485 | status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); |
c36fca52 | 486 | if (!cps->clp) /* set in cb_sequence */ |
31f09607 AB |
487 | goto out; |
488 | ||
2446ab60 | 489 | dprintk_rcu("NFS: RECALL_ANY callback request from %s\n", |
c36fca52 | 490 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
31f09607 | 491 | |
36840370 AB |
492 | status = cpu_to_be32(NFS4ERR_INVAL); |
493 | if (!validate_bitmap_values(args->craa_type_mask)) | |
494 | goto out; | |
495 | ||
496 | status = cpu_to_be32(NFS4_OK); | |
31f09607 AB |
497 | if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *) |
498 | &args->craa_type_mask)) | |
499 | flags = FMODE_READ; | |
500 | if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *) | |
501 | &args->craa_type_mask)) | |
502 | flags |= FMODE_WRITE; | |
36840370 AB |
503 | if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *) |
504 | &args->craa_type_mask)) | |
505 | pnfs_recall_all_layouts(cps->clp); | |
31f09607 | 506 | if (flags) |
826e0013 | 507 | nfs_expire_unused_delegation_types(cps->clp, flags); |
31f09607 AB |
508 | out: |
509 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
510 | return status; | |
511 | } | |
b9efa1b2 AA |
512 | |
513 | /* Reduce the fore channel's max_slots to the target value */ | |
c36fca52 AA |
514 | __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy, |
515 | struct cb_process_state *cps) | |
b9efa1b2 | 516 | { |
b9efa1b2 | 517 | struct nfs4_slot_table *fc_tbl; |
9733f0d9 | 518 | __be32 status; |
b9efa1b2 AA |
519 | |
520 | status = htonl(NFS4ERR_OP_NOT_IN_SESSION); | |
c36fca52 | 521 | if (!cps->clp) /* set in cb_sequence */ |
b9efa1b2 AA |
522 | goto out; |
523 | ||
e8d92382 | 524 | dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target highest slotid %u\n", |
c36fca52 | 525 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR), |
d5fb4ce3 | 526 | args->crsa_target_highest_slotid); |
b9efa1b2 | 527 | |
c36fca52 | 528 | fc_tbl = &cps->clp->cl_session->fc_slot_table; |
b9efa1b2 | 529 | |
bae0ac0e | 530 | status = htonl(NFS4_OK); |
b9efa1b2 | 531 | |
d5fb4ce3 | 532 | nfs41_set_target_slotid(fc_tbl, args->crsa_target_highest_slotid); |
ac074835 | 533 | nfs41_server_notify_target_slotid_update(cps->clp); |
b9efa1b2 AA |
534 | out: |
535 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
536 | return status; | |
537 | } | |
d49433e1 | 538 | #endif /* CONFIG_NFS_V4_1 */ |