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" |
1da177e4 | 18 | |
1d98fe67 | 19 | #ifdef NFS_DEBUG |
1da177e4 | 20 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
1d98fe67 | 21 | #endif |
c36fca52 AA |
22 | |
23 | __be32 nfs4_callback_getattr(struct cb_getattrargs *args, | |
24 | struct cb_getattrres *res, | |
25 | struct cb_process_state *cps) | |
1da177e4 | 26 | { |
1da177e4 LT |
27 | struct nfs_delegation *delegation; |
28 | struct nfs_inode *nfsi; | |
29 | struct inode *inode; | |
1d98fe67 | 30 | |
c36fca52 AA |
31 | res->status = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
32 | if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ | |
33 | goto out; | |
34 | ||
1da177e4 LT |
35 | res->bitmap[0] = res->bitmap[1] = 0; |
36 | res->status = htonl(NFS4ERR_BADHANDLE); | |
1d98fe67 | 37 | |
2446ab60 | 38 | dprintk_rcu("NFS: GETATTR callback request from %s\n", |
c36fca52 | 39 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
1d98fe67 | 40 | |
c36fca52 | 41 | inode = nfs_delegation_find_inode(cps->clp, &args->fh); |
1da177e4 | 42 | if (inode == NULL) |
c36fca52 | 43 | goto out; |
1da177e4 | 44 | nfsi = NFS_I(inode); |
761fe93c TM |
45 | rcu_read_lock(); |
46 | delegation = rcu_dereference(nfsi->delegation); | |
1da177e4 LT |
47 | if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0) |
48 | goto out_iput; | |
49 | res->size = i_size_read(inode); | |
beb2a5ec TM |
50 | res->change_attr = delegation->change_attr; |
51 | if (nfsi->npages != 0) | |
52 | res->change_attr++; | |
1da177e4 LT |
53 | res->ctime = inode->i_ctime; |
54 | res->mtime = inode->i_mtime; | |
55 | res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) & | |
56 | args->bitmap[0]; | |
57 | res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) & | |
58 | args->bitmap[1]; | |
59 | res->status = 0; | |
60 | out_iput: | |
761fe93c | 61 | rcu_read_unlock(); |
1da177e4 | 62 | iput(inode); |
1da177e4 | 63 | out: |
3110ff80 | 64 | dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status)); |
1da177e4 LT |
65 | return res->status; |
66 | } | |
67 | ||
c36fca52 AA |
68 | __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, |
69 | struct cb_process_state *cps) | |
1da177e4 | 70 | { |
1da177e4 | 71 | struct inode *inode; |
e6f684f6 | 72 | __be32 res; |
1da177e4 | 73 | |
c36fca52 AA |
74 | res = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
75 | if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ | |
1da177e4 | 76 | goto out; |
1d98fe67 | 77 | |
2446ab60 | 78 | dprintk_rcu("NFS: RECALL callback request from %s\n", |
c36fca52 AA |
79 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
80 | ||
81 | res = htonl(NFS4ERR_BADHANDLE); | |
82 | inode = nfs_delegation_find_inode(cps->clp, &args->fh); | |
83 | if (inode == NULL) | |
84 | goto out; | |
85 | /* Set up a helper thread to actually return the delegation */ | |
86 | switch (nfs_async_inode_return_delegation(inode, &args->stateid)) { | |
87 | case 0: | |
88 | res = 0; | |
89 | break; | |
90 | case -ENOENT: | |
8e663f0e | 91 | res = htonl(NFS4ERR_BAD_STATEID); |
c36fca52 AA |
92 | break; |
93 | default: | |
94 | res = htonl(NFS4ERR_RESOURCE); | |
95 | } | |
96 | iput(inode); | |
1da177e4 | 97 | out: |
3110ff80 | 98 | dprintk("%s: exit with status = %d\n", __func__, ntohl(res)); |
1da177e4 LT |
99 | return res; |
100 | } | |
d49433e1 BH |
101 | |
102 | #if defined(CONFIG_NFS_V4_1) | |
103 | ||
d36b7cf7 BH |
104 | /* |
105 | * Lookup a layout by filehandle. | |
106 | * | |
107 | * Note: gets a refcount on the layout hdr and on its respective inode. | |
108 | * Caller must put the layout hdr and the inode. | |
109 | * | |
110 | * TODO: keep track of all layouts (and delegations) in a hash table | |
111 | * hashed by filehandle. | |
112 | */ | |
113 | static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, struct nfs_fh *fh) | |
43f1b3da | 114 | { |
6382a441 | 115 | struct nfs_server *server; |
43f1b3da | 116 | struct inode *ino; |
d36b7cf7 | 117 | struct pnfs_layout_hdr *lo; |
43f1b3da | 118 | |
6382a441 WAA |
119 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { |
120 | list_for_each_entry(lo, &server->layouts, plh_layouts) { | |
d36b7cf7 | 121 | if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh)) |
6382a441 WAA |
122 | continue; |
123 | ino = igrab(lo->plh_inode); | |
124 | if (!ino) | |
125 | continue; | |
9c626381 TM |
126 | spin_lock(&ino->i_lock); |
127 | /* Is this layout in the process of being freed? */ | |
128 | if (NFS_I(ino)->layout != lo) { | |
129 | spin_unlock(&ino->i_lock); | |
130 | iput(ino); | |
131 | continue; | |
132 | } | |
70c3bd2b | 133 | pnfs_get_layout_hdr(lo); |
9c626381 | 134 | spin_unlock(&ino->i_lock); |
d36b7cf7 | 135 | return lo; |
6382a441 | 136 | } |
43f1b3da | 137 | } |
d36b7cf7 BH |
138 | |
139 | return NULL; | |
140 | } | |
141 | ||
142 | static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, struct nfs_fh *fh) | |
143 | { | |
144 | struct pnfs_layout_hdr *lo; | |
145 | ||
146 | spin_lock(&clp->cl_lock); | |
147 | rcu_read_lock(); | |
148 | lo = get_layout_by_fh_locked(clp, fh); | |
6382a441 | 149 | rcu_read_unlock(); |
43f1b3da | 150 | spin_unlock(&clp->cl_lock); |
6382a441 | 151 | |
d36b7cf7 BH |
152 | return lo; |
153 | } | |
154 | ||
155 | static u32 initiate_file_draining(struct nfs_client *clp, | |
156 | struct cb_layoutrecallargs *args) | |
157 | { | |
158 | struct inode *ino; | |
159 | struct pnfs_layout_hdr *lo; | |
160 | u32 rv = NFS4ERR_NOMATCHING_LAYOUT; | |
161 | LIST_HEAD(free_me_list); | |
162 | ||
163 | lo = get_layout_by_fh(clp, &args->cbl_fh); | |
164 | if (!lo) | |
43f1b3da FI |
165 | return NFS4ERR_NOMATCHING_LAYOUT; |
166 | ||
d36b7cf7 | 167 | ino = lo->plh_inode; |
43f1b3da FI |
168 | spin_lock(&ino->i_lock); |
169 | if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) || | |
49a85061 | 170 | pnfs_mark_matching_lsegs_invalid(lo, &free_me_list, |
778b5502 | 171 | &args->cbl_range)) |
43f1b3da FI |
172 | rv = NFS4ERR_DELAY; |
173 | else | |
174 | rv = NFS4ERR_NOMATCHING_LAYOUT; | |
175 | pnfs_set_layout_stateid(lo, &args->cbl_stateid, true); | |
176 | spin_unlock(&ino->i_lock); | |
177 | pnfs_free_lseg_list(&free_me_list); | |
70c3bd2b | 178 | pnfs_put_layout_hdr(lo); |
43f1b3da FI |
179 | iput(ino); |
180 | return rv; | |
181 | } | |
182 | ||
183 | static u32 initiate_bulk_draining(struct nfs_client *clp, | |
184 | struct cb_layoutrecallargs *args) | |
185 | { | |
fd9a8d71 | 186 | int stat; |
6382a441 | 187 | |
fd9a8d71 TM |
188 | if (args->cbl_recall_type == RETURN_FSID) |
189 | stat = pnfs_destroy_layouts_byfsid(clp, &args->cbl_fsid, true); | |
190 | else | |
191 | stat = pnfs_destroy_layouts_byclid(clp, true); | |
192 | if (stat != 0) | |
193 | return NFS4ERR_DELAY; | |
194 | return NFS4ERR_NOMATCHING_LAYOUT; | |
43f1b3da FI |
195 | } |
196 | ||
197 | static u32 do_callback_layoutrecall(struct nfs_client *clp, | |
198 | struct cb_layoutrecallargs *args) | |
199 | { | |
0cb3284b | 200 | u32 res; |
43f1b3da FI |
201 | |
202 | dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type); | |
43f1b3da FI |
203 | if (args->cbl_recall_type == RETURN_FILE) |
204 | res = initiate_file_draining(clp, args); | |
205 | else | |
206 | res = initiate_bulk_draining(clp, args); | |
43f1b3da FI |
207 | dprintk("%s returning %i\n", __func__, res); |
208 | return res; | |
209 | ||
210 | } | |
211 | ||
f2a62561 FI |
212 | __be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args, |
213 | void *dummy, struct cb_process_state *cps) | |
214 | { | |
43f1b3da FI |
215 | u32 res; |
216 | ||
217 | dprintk("%s: -->\n", __func__); | |
218 | ||
219 | if (cps->clp) | |
220 | res = do_callback_layoutrecall(cps->clp, args); | |
221 | else | |
222 | res = NFS4ERR_OP_NOT_IN_SESSION; | |
223 | ||
224 | dprintk("%s: exit with status = %d\n", __func__, res); | |
225 | return cpu_to_be32(res); | |
f2a62561 FI |
226 | } |
227 | ||
36840370 AB |
228 | static void pnfs_recall_all_layouts(struct nfs_client *clp) |
229 | { | |
230 | struct cb_layoutrecallargs args; | |
231 | ||
232 | /* Pretend we got a CB_LAYOUTRECALL(ALL) */ | |
233 | memset(&args, 0, sizeof(args)); | |
234 | args.cbl_recall_type = RETURN_ALL; | |
235 | /* FIXME we ignore errors, what should we do? */ | |
236 | do_callback_layoutrecall(clp, &args); | |
237 | } | |
238 | ||
1be5683b ME |
239 | __be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args, |
240 | void *dummy, struct cb_process_state *cps) | |
241 | { | |
242 | int i; | |
243 | __be32 res = 0; | |
244 | struct nfs_client *clp = cps->clp; | |
245 | struct nfs_server *server = NULL; | |
246 | ||
247 | dprintk("%s: -->\n", __func__); | |
248 | ||
249 | if (!clp) { | |
250 | res = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); | |
251 | goto out; | |
252 | } | |
253 | ||
254 | for (i = 0; i < args->ndevs; i++) { | |
255 | struct cb_devicenotifyitem *dev = &args->devs[i]; | |
256 | ||
257 | if (!server || | |
258 | server->pnfs_curr_ld->id != dev->cbd_layout_type) { | |
259 | rcu_read_lock(); | |
260 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) | |
261 | if (server->pnfs_curr_ld && | |
262 | server->pnfs_curr_ld->id == dev->cbd_layout_type) { | |
263 | rcu_read_unlock(); | |
264 | goto found; | |
265 | } | |
266 | rcu_read_unlock(); | |
267 | dprintk("%s: layout type %u not found\n", | |
268 | __func__, dev->cbd_layout_type); | |
269 | continue; | |
270 | } | |
271 | ||
272 | found: | |
273 | if (dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) | |
274 | dprintk("%s: NOTIFY_DEVICEID4_CHANGE not supported, " | |
275 | "deleting instead\n", __func__); | |
35c8bb54 | 276 | nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id); |
1be5683b ME |
277 | } |
278 | ||
279 | out: | |
280 | kfree(args->devs); | |
281 | dprintk("%s: exit with status = %u\n", | |
282 | __func__, be32_to_cpu(res)); | |
283 | return res; | |
284 | } | |
285 | ||
68f3f901 RL |
286 | /* |
287 | * Validate the sequenceID sent by the server. | |
288 | * Return success if the sequenceID is one more than what we last saw on | |
289 | * this slot, accounting for wraparound. Increments the slot's sequence. | |
290 | * | |
4911096f AA |
291 | * We don't yet implement a duplicate request cache, instead we set the |
292 | * back channel ca_maxresponsesize_cached to zero. This is OK for now | |
68f3f901 RL |
293 | * since we only currently implement idempotent callbacks anyway. |
294 | * | |
295 | * We have a single slot backchannel at this time, so we don't bother | |
296 | * checking the used_slots bit array on the table. The lower layer guarantees | |
297 | * a single outstanding callback request at a time. | |
298 | */ | |
9733f0d9 | 299 | static __be32 |
b2f28bd7 | 300 | validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args) |
68f3f901 RL |
301 | { |
302 | struct nfs4_slot *slot; | |
303 | ||
304 | dprintk("%s enter. slotid %d seqid %d\n", | |
b2f28bd7 | 305 | __func__, args->csa_slotid, args->csa_sequenceid); |
68f3f901 | 306 | |
61f2e510 | 307 | if (args->csa_slotid >= NFS41_BC_MAX_CALLBACKS) |
68f3f901 RL |
308 | return htonl(NFS4ERR_BADSLOT); |
309 | ||
b2f28bd7 | 310 | slot = tbl->slots + args->csa_slotid; |
68f3f901 RL |
311 | dprintk("%s slot table seqid: %d\n", __func__, slot->seq_nr); |
312 | ||
313 | /* Normal */ | |
b2f28bd7 | 314 | if (likely(args->csa_sequenceid == slot->seq_nr + 1)) { |
68f3f901 | 315 | slot->seq_nr++; |
55a67399 | 316 | goto out_ok; |
68f3f901 RL |
317 | } |
318 | ||
319 | /* Replay */ | |
b2f28bd7 | 320 | if (args->csa_sequenceid == slot->seq_nr) { |
4911096f | 321 | dprintk("%s seqid %d is a replay\n", |
b2f28bd7 | 322 | __func__, args->csa_sequenceid); |
4911096f AA |
323 | /* Signal process_op to set this error on next op */ |
324 | if (args->csa_cachethis == 0) | |
325 | return htonl(NFS4ERR_RETRY_UNCACHED_REP); | |
326 | ||
327 | /* The ca_maxresponsesize_cached is 0 with no DRC */ | |
328 | else if (args->csa_cachethis == 1) | |
329 | return htonl(NFS4ERR_REP_TOO_BIG_TO_CACHE); | |
68f3f901 RL |
330 | } |
331 | ||
332 | /* Wraparound */ | |
b2f28bd7 | 333 | if (args->csa_sequenceid == 1 && (slot->seq_nr + 1) == 0) { |
68f3f901 | 334 | slot->seq_nr = 1; |
55a67399 | 335 | goto out_ok; |
68f3f901 RL |
336 | } |
337 | ||
338 | /* Misordered request */ | |
339 | return htonl(NFS4ERR_SEQ_MISORDERED); | |
55a67399 TM |
340 | out_ok: |
341 | tbl->highest_used_slotid = args->csa_slotid; | |
342 | return htonl(NFS4_OK); | |
68f3f901 RL |
343 | } |
344 | ||
a7989c3e MS |
345 | /* |
346 | * For each referring call triple, check the session's slot table for | |
347 | * a match. If the slot is in use and the sequence numbers match, the | |
348 | * client is still waiting for a response to the original request. | |
349 | */ | |
350 | static bool referring_call_exists(struct nfs_client *clp, | |
351 | uint32_t nrclists, | |
352 | struct referring_call_list *rclists) | |
353 | { | |
354 | bool status = 0; | |
355 | int i, j; | |
356 | struct nfs4_session *session; | |
357 | struct nfs4_slot_table *tbl; | |
358 | struct referring_call_list *rclist; | |
359 | struct referring_call *ref; | |
360 | ||
361 | /* | |
362 | * XXX When client trunking is implemented, this becomes | |
363 | * a session lookup from within the loop | |
364 | */ | |
365 | session = clp->cl_session; | |
366 | tbl = &session->fc_slot_table; | |
367 | ||
368 | for (i = 0; i < nrclists; i++) { | |
369 | rclist = &rclists[i]; | |
370 | if (memcmp(session->sess_id.data, | |
371 | rclist->rcl_sessionid.data, | |
372 | NFS4_MAX_SESSIONID_LEN) != 0) | |
373 | continue; | |
374 | ||
375 | for (j = 0; j < rclist->rcl_nrefcalls; j++) { | |
376 | ref = &rclist->rcl_refcalls[j]; | |
377 | ||
378 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u " | |
379 | "slotid %u\n", __func__, | |
380 | ((u32 *)&rclist->rcl_sessionid.data)[0], | |
381 | ((u32 *)&rclist->rcl_sessionid.data)[1], | |
382 | ((u32 *)&rclist->rcl_sessionid.data)[2], | |
383 | ((u32 *)&rclist->rcl_sessionid.data)[3], | |
384 | ref->rc_sequenceid, ref->rc_slotid); | |
385 | ||
386 | spin_lock(&tbl->slot_tbl_lock); | |
387 | status = (test_bit(ref->rc_slotid, tbl->used_slots) && | |
388 | tbl->slots[ref->rc_slotid].seq_nr == | |
389 | ref->rc_sequenceid); | |
390 | spin_unlock(&tbl->slot_tbl_lock); | |
391 | if (status) | |
392 | goto out; | |
393 | } | |
394 | } | |
395 | ||
396 | out: | |
397 | return status; | |
398 | } | |
399 | ||
9733f0d9 | 400 | __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, |
c36fca52 AA |
401 | struct cb_sequenceres *res, |
402 | struct cb_process_state *cps) | |
d49433e1 | 403 | { |
55a67399 | 404 | struct nfs4_slot_table *tbl; |
68f3f901 | 405 | struct nfs_client *clp; |
9733f0d9 | 406 | int i; |
778be232 | 407 | __be32 status = htonl(NFS4ERR_BADSESSION); |
d49433e1 | 408 | |
c7add9a9 | 409 | clp = nfs4_find_client_sessionid(cps->net, args->csa_addr, &args->csa_sessionid); |
68f3f901 RL |
410 | if (clp == NULL) |
411 | goto out; | |
412 | ||
55a67399 TM |
413 | tbl = &clp->cl_session->bc_slot_table; |
414 | ||
415 | spin_lock(&tbl->slot_tbl_lock); | |
42acd021 AA |
416 | /* state manager is resetting the session */ |
417 | if (test_bit(NFS4_SESSION_DRAINING, &clp->cl_session->session_state)) { | |
55a67399 TM |
418 | spin_unlock(&tbl->slot_tbl_lock); |
419 | status = htonl(NFS4ERR_DELAY); | |
910ac68a TM |
420 | /* Return NFS4ERR_BADSESSION if we're draining the session |
421 | * in order to reset it. | |
422 | */ | |
423 | if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) | |
424 | status = htonl(NFS4ERR_BADSESSION); | |
42acd021 AA |
425 | goto out; |
426 | } | |
427 | ||
b2f28bd7 | 428 | status = validate_seqid(&clp->cl_session->bc_slot_table, args); |
55a67399 | 429 | spin_unlock(&tbl->slot_tbl_lock); |
68f3f901 | 430 | if (status) |
c36fca52 | 431 | goto out; |
68f3f901 | 432 | |
55a67399 TM |
433 | cps->slotid = args->csa_slotid; |
434 | ||
72ce2b3c MS |
435 | /* |
436 | * Check for pending referring calls. If a match is found, a | |
437 | * related callback was received before the response to the original | |
438 | * call. | |
439 | */ | |
440 | if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) { | |
441 | status = htonl(NFS4ERR_DELAY); | |
c36fca52 | 442 | goto out; |
72ce2b3c MS |
443 | } |
444 | ||
d49433e1 BH |
445 | memcpy(&res->csr_sessionid, &args->csa_sessionid, |
446 | sizeof(res->csr_sessionid)); | |
447 | res->csr_sequenceid = args->csa_sequenceid; | |
448 | res->csr_slotid = args->csa_slotid; | |
449 | res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1; | |
450 | res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1; | |
451 | ||
68f3f901 | 452 | out: |
2c4cdf8f | 453 | cps->clp = clp; /* put in nfs4_callback_compound */ |
72ce2b3c MS |
454 | for (i = 0; i < args->csa_nrclists; i++) |
455 | kfree(args->csa_rclists[i].rcl_refcalls); | |
456 | kfree(args->csa_rclists); | |
457 | ||
c36fca52 AA |
458 | if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) { |
459 | cps->drc_status = status; | |
460 | status = 0; | |
461 | } else | |
4911096f | 462 | res->csr_status = status; |
c36fca52 | 463 | |
4911096f AA |
464 | dprintk("%s: exit with status = %d res->csr_status %d\n", __func__, |
465 | ntohl(status), ntohl(res->csr_status)); | |
466 | return status; | |
d49433e1 BH |
467 | } |
468 | ||
36840370 AB |
469 | static bool |
470 | validate_bitmap_values(unsigned long mask) | |
471 | { | |
472 | return (mask & ~RCA4_TYPE_MASK_ALL) == 0; | |
473 | } | |
474 | ||
c36fca52 AA |
475 | __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy, |
476 | struct cb_process_state *cps) | |
31f09607 | 477 | { |
9733f0d9 | 478 | __be32 status; |
31f09607 AB |
479 | fmode_t flags = 0; |
480 | ||
36840370 | 481 | status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); |
c36fca52 | 482 | if (!cps->clp) /* set in cb_sequence */ |
31f09607 AB |
483 | goto out; |
484 | ||
2446ab60 | 485 | dprintk_rcu("NFS: RECALL_ANY callback request from %s\n", |
c36fca52 | 486 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
31f09607 | 487 | |
36840370 AB |
488 | status = cpu_to_be32(NFS4ERR_INVAL); |
489 | if (!validate_bitmap_values(args->craa_type_mask)) | |
490 | goto out; | |
491 | ||
492 | status = cpu_to_be32(NFS4_OK); | |
31f09607 AB |
493 | if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *) |
494 | &args->craa_type_mask)) | |
495 | flags = FMODE_READ; | |
496 | if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *) | |
497 | &args->craa_type_mask)) | |
498 | flags |= FMODE_WRITE; | |
36840370 AB |
499 | if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *) |
500 | &args->craa_type_mask)) | |
501 | pnfs_recall_all_layouts(cps->clp); | |
31f09607 | 502 | if (flags) |
c36fca52 | 503 | nfs_expire_all_delegation_types(cps->clp, flags); |
31f09607 AB |
504 | out: |
505 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
506 | return status; | |
507 | } | |
b9efa1b2 AA |
508 | |
509 | /* Reduce the fore channel's max_slots to the target value */ | |
c36fca52 AA |
510 | __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy, |
511 | struct cb_process_state *cps) | |
b9efa1b2 | 512 | { |
b9efa1b2 | 513 | struct nfs4_slot_table *fc_tbl; |
9733f0d9 | 514 | __be32 status; |
b9efa1b2 AA |
515 | |
516 | status = htonl(NFS4ERR_OP_NOT_IN_SESSION); | |
c36fca52 | 517 | if (!cps->clp) /* set in cb_sequence */ |
b9efa1b2 AA |
518 | goto out; |
519 | ||
d5fb4ce3 | 520 | dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target highest slotid %d\n", |
c36fca52 | 521 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR), |
d5fb4ce3 | 522 | args->crsa_target_highest_slotid); |
b9efa1b2 | 523 | |
c36fca52 | 524 | fc_tbl = &cps->clp->cl_session->fc_slot_table; |
b9efa1b2 | 525 | |
bae0ac0e | 526 | status = htonl(NFS4_OK); |
b9efa1b2 | 527 | |
d5fb4ce3 | 528 | nfs41_set_target_slotid(fc_tbl, args->crsa_target_highest_slotid); |
ac074835 | 529 | nfs41_server_notify_target_slotid_update(cps->clp); |
b9efa1b2 AA |
530 | out: |
531 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
532 | return status; | |
533 | } | |
d49433e1 | 534 | #endif /* CONFIG_NFS_V4_1 */ |