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Commit | Line | Data |
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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" |
1da177e4 | 17 | |
1d98fe67 | 18 | #ifdef NFS_DEBUG |
1da177e4 | 19 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
1d98fe67 | 20 | #endif |
c36fca52 AA |
21 | |
22 | __be32 nfs4_callback_getattr(struct cb_getattrargs *args, | |
23 | struct cb_getattrres *res, | |
24 | struct cb_process_state *cps) | |
1da177e4 | 25 | { |
1da177e4 LT |
26 | struct nfs_delegation *delegation; |
27 | struct nfs_inode *nfsi; | |
28 | struct inode *inode; | |
1d98fe67 | 29 | |
c36fca52 AA |
30 | res->status = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
31 | if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ | |
32 | goto out; | |
33 | ||
1da177e4 LT |
34 | res->bitmap[0] = res->bitmap[1] = 0; |
35 | res->status = htonl(NFS4ERR_BADHANDLE); | |
1d98fe67 | 36 | |
2446ab60 | 37 | dprintk_rcu("NFS: GETATTR callback request from %s\n", |
c36fca52 | 38 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
1d98fe67 | 39 | |
c36fca52 | 40 | inode = nfs_delegation_find_inode(cps->clp, &args->fh); |
1da177e4 | 41 | if (inode == NULL) |
c36fca52 | 42 | goto out; |
1da177e4 | 43 | nfsi = NFS_I(inode); |
761fe93c TM |
44 | rcu_read_lock(); |
45 | delegation = rcu_dereference(nfsi->delegation); | |
1da177e4 LT |
46 | if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0) |
47 | goto out_iput; | |
48 | res->size = i_size_read(inode); | |
beb2a5ec TM |
49 | res->change_attr = delegation->change_attr; |
50 | if (nfsi->npages != 0) | |
51 | res->change_attr++; | |
1da177e4 LT |
52 | res->ctime = inode->i_ctime; |
53 | res->mtime = inode->i_mtime; | |
54 | res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) & | |
55 | args->bitmap[0]; | |
56 | res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) & | |
57 | args->bitmap[1]; | |
58 | res->status = 0; | |
59 | out_iput: | |
761fe93c | 60 | rcu_read_unlock(); |
1da177e4 | 61 | iput(inode); |
1da177e4 | 62 | out: |
3110ff80 | 63 | dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status)); |
1da177e4 LT |
64 | return res->status; |
65 | } | |
66 | ||
c36fca52 AA |
67 | __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, |
68 | struct cb_process_state *cps) | |
1da177e4 | 69 | { |
1da177e4 | 70 | struct inode *inode; |
e6f684f6 | 71 | __be32 res; |
1da177e4 | 72 | |
c36fca52 AA |
73 | res = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
74 | if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ | |
1da177e4 | 75 | goto out; |
1d98fe67 | 76 | |
2446ab60 | 77 | dprintk_rcu("NFS: RECALL callback request from %s\n", |
c36fca52 AA |
78 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
79 | ||
80 | res = htonl(NFS4ERR_BADHANDLE); | |
81 | inode = nfs_delegation_find_inode(cps->clp, &args->fh); | |
82 | if (inode == NULL) | |
83 | goto out; | |
84 | /* Set up a helper thread to actually return the delegation */ | |
85 | switch (nfs_async_inode_return_delegation(inode, &args->stateid)) { | |
86 | case 0: | |
87 | res = 0; | |
88 | break; | |
89 | case -ENOENT: | |
8e663f0e | 90 | res = htonl(NFS4ERR_BAD_STATEID); |
c36fca52 AA |
91 | break; |
92 | default: | |
93 | res = htonl(NFS4ERR_RESOURCE); | |
94 | } | |
95 | iput(inode); | |
1da177e4 | 96 | out: |
3110ff80 | 97 | dprintk("%s: exit with status = %d\n", __func__, ntohl(res)); |
1da177e4 LT |
98 | return res; |
99 | } | |
d49433e1 BH |
100 | |
101 | #if defined(CONFIG_NFS_V4_1) | |
102 | ||
d36b7cf7 BH |
103 | /* |
104 | * Lookup a layout by filehandle. | |
105 | * | |
106 | * Note: gets a refcount on the layout hdr and on its respective inode. | |
107 | * Caller must put the layout hdr and the inode. | |
108 | * | |
109 | * TODO: keep track of all layouts (and delegations) in a hash table | |
110 | * hashed by filehandle. | |
111 | */ | |
112 | static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, struct nfs_fh *fh) | |
43f1b3da | 113 | { |
6382a441 | 114 | struct nfs_server *server; |
43f1b3da | 115 | struct inode *ino; |
d36b7cf7 | 116 | struct pnfs_layout_hdr *lo; |
43f1b3da | 117 | |
6382a441 WAA |
118 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { |
119 | list_for_each_entry(lo, &server->layouts, plh_layouts) { | |
d36b7cf7 | 120 | if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh)) |
6382a441 WAA |
121 | continue; |
122 | ino = igrab(lo->plh_inode); | |
123 | if (!ino) | |
124 | continue; | |
6382a441 | 125 | get_layout_hdr(lo); |
d36b7cf7 | 126 | return lo; |
6382a441 | 127 | } |
43f1b3da | 128 | } |
d36b7cf7 BH |
129 | |
130 | return NULL; | |
131 | } | |
132 | ||
133 | static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, struct nfs_fh *fh) | |
134 | { | |
135 | struct pnfs_layout_hdr *lo; | |
136 | ||
137 | spin_lock(&clp->cl_lock); | |
138 | rcu_read_lock(); | |
139 | lo = get_layout_by_fh_locked(clp, fh); | |
6382a441 | 140 | rcu_read_unlock(); |
43f1b3da | 141 | spin_unlock(&clp->cl_lock); |
6382a441 | 142 | |
d36b7cf7 BH |
143 | return lo; |
144 | } | |
145 | ||
146 | static u32 initiate_file_draining(struct nfs_client *clp, | |
147 | struct cb_layoutrecallargs *args) | |
148 | { | |
149 | struct inode *ino; | |
150 | struct pnfs_layout_hdr *lo; | |
151 | u32 rv = NFS4ERR_NOMATCHING_LAYOUT; | |
152 | LIST_HEAD(free_me_list); | |
153 | ||
154 | lo = get_layout_by_fh(clp, &args->cbl_fh); | |
155 | if (!lo) | |
43f1b3da FI |
156 | return NFS4ERR_NOMATCHING_LAYOUT; |
157 | ||
d36b7cf7 | 158 | ino = lo->plh_inode; |
43f1b3da FI |
159 | spin_lock(&ino->i_lock); |
160 | if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) || | |
161 | mark_matching_lsegs_invalid(lo, &free_me_list, | |
778b5502 | 162 | &args->cbl_range)) |
43f1b3da FI |
163 | rv = NFS4ERR_DELAY; |
164 | else | |
165 | rv = NFS4ERR_NOMATCHING_LAYOUT; | |
166 | pnfs_set_layout_stateid(lo, &args->cbl_stateid, true); | |
167 | spin_unlock(&ino->i_lock); | |
168 | pnfs_free_lseg_list(&free_me_list); | |
169 | put_layout_hdr(lo); | |
170 | iput(ino); | |
171 | return rv; | |
172 | } | |
173 | ||
174 | static u32 initiate_bulk_draining(struct nfs_client *clp, | |
175 | struct cb_layoutrecallargs *args) | |
176 | { | |
6382a441 | 177 | struct nfs_server *server; |
43f1b3da FI |
178 | struct pnfs_layout_hdr *lo; |
179 | struct inode *ino; | |
180 | u32 rv = NFS4ERR_NOMATCHING_LAYOUT; | |
181 | struct pnfs_layout_hdr *tmp; | |
182 | LIST_HEAD(recall_list); | |
183 | LIST_HEAD(free_me_list); | |
184 | struct pnfs_layout_range range = { | |
185 | .iomode = IOMODE_ANY, | |
186 | .offset = 0, | |
187 | .length = NFS4_MAX_UINT64, | |
188 | }; | |
189 | ||
190 | spin_lock(&clp->cl_lock); | |
6382a441 WAA |
191 | rcu_read_lock(); |
192 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { | |
43f1b3da | 193 | if ((args->cbl_recall_type == RETURN_FSID) && |
6382a441 WAA |
194 | memcmp(&server->fsid, &args->cbl_fsid, |
195 | sizeof(struct nfs_fsid))) | |
43f1b3da | 196 | continue; |
6382a441 WAA |
197 | |
198 | list_for_each_entry(lo, &server->layouts, plh_layouts) { | |
199 | if (!igrab(lo->plh_inode)) | |
200 | continue; | |
201 | get_layout_hdr(lo); | |
202 | BUG_ON(!list_empty(&lo->plh_bulk_recall)); | |
203 | list_add(&lo->plh_bulk_recall, &recall_list); | |
204 | } | |
43f1b3da | 205 | } |
6382a441 | 206 | rcu_read_unlock(); |
43f1b3da | 207 | spin_unlock(&clp->cl_lock); |
6382a441 | 208 | |
43f1b3da FI |
209 | list_for_each_entry_safe(lo, tmp, |
210 | &recall_list, plh_bulk_recall) { | |
211 | ino = lo->plh_inode; | |
212 | spin_lock(&ino->i_lock); | |
213 | set_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags); | |
778b5502 | 214 | if (mark_matching_lsegs_invalid(lo, &free_me_list, &range)) |
43f1b3da FI |
215 | rv = NFS4ERR_DELAY; |
216 | list_del_init(&lo->plh_bulk_recall); | |
217 | spin_unlock(&ino->i_lock); | |
f49f9baa | 218 | pnfs_free_lseg_list(&free_me_list); |
43f1b3da FI |
219 | put_layout_hdr(lo); |
220 | iput(ino); | |
221 | } | |
43f1b3da FI |
222 | return rv; |
223 | } | |
224 | ||
225 | static u32 do_callback_layoutrecall(struct nfs_client *clp, | |
226 | struct cb_layoutrecallargs *args) | |
227 | { | |
0cb3284b | 228 | u32 res; |
43f1b3da FI |
229 | |
230 | dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type); | |
43f1b3da FI |
231 | if (args->cbl_recall_type == RETURN_FILE) |
232 | res = initiate_file_draining(clp, args); | |
233 | else | |
234 | res = initiate_bulk_draining(clp, args); | |
43f1b3da FI |
235 | dprintk("%s returning %i\n", __func__, res); |
236 | return res; | |
237 | ||
238 | } | |
239 | ||
f2a62561 FI |
240 | __be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args, |
241 | void *dummy, struct cb_process_state *cps) | |
242 | { | |
43f1b3da FI |
243 | u32 res; |
244 | ||
245 | dprintk("%s: -->\n", __func__); | |
246 | ||
247 | if (cps->clp) | |
248 | res = do_callback_layoutrecall(cps->clp, args); | |
249 | else | |
250 | res = NFS4ERR_OP_NOT_IN_SESSION; | |
251 | ||
252 | dprintk("%s: exit with status = %d\n", __func__, res); | |
253 | return cpu_to_be32(res); | |
f2a62561 FI |
254 | } |
255 | ||
36840370 AB |
256 | static void pnfs_recall_all_layouts(struct nfs_client *clp) |
257 | { | |
258 | struct cb_layoutrecallargs args; | |
259 | ||
260 | /* Pretend we got a CB_LAYOUTRECALL(ALL) */ | |
261 | memset(&args, 0, sizeof(args)); | |
262 | args.cbl_recall_type = RETURN_ALL; | |
263 | /* FIXME we ignore errors, what should we do? */ | |
264 | do_callback_layoutrecall(clp, &args); | |
265 | } | |
266 | ||
1be5683b ME |
267 | __be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args, |
268 | void *dummy, struct cb_process_state *cps) | |
269 | { | |
270 | int i; | |
271 | __be32 res = 0; | |
272 | struct nfs_client *clp = cps->clp; | |
273 | struct nfs_server *server = NULL; | |
274 | ||
275 | dprintk("%s: -->\n", __func__); | |
276 | ||
277 | if (!clp) { | |
278 | res = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); | |
279 | goto out; | |
280 | } | |
281 | ||
282 | for (i = 0; i < args->ndevs; i++) { | |
283 | struct cb_devicenotifyitem *dev = &args->devs[i]; | |
284 | ||
285 | if (!server || | |
286 | server->pnfs_curr_ld->id != dev->cbd_layout_type) { | |
287 | rcu_read_lock(); | |
288 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) | |
289 | if (server->pnfs_curr_ld && | |
290 | server->pnfs_curr_ld->id == dev->cbd_layout_type) { | |
291 | rcu_read_unlock(); | |
292 | goto found; | |
293 | } | |
294 | rcu_read_unlock(); | |
295 | dprintk("%s: layout type %u not found\n", | |
296 | __func__, dev->cbd_layout_type); | |
297 | continue; | |
298 | } | |
299 | ||
300 | found: | |
301 | if (dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) | |
302 | dprintk("%s: NOTIFY_DEVICEID4_CHANGE not supported, " | |
303 | "deleting instead\n", __func__); | |
35c8bb54 | 304 | nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id); |
1be5683b ME |
305 | } |
306 | ||
307 | out: | |
308 | kfree(args->devs); | |
309 | dprintk("%s: exit with status = %u\n", | |
310 | __func__, be32_to_cpu(res)); | |
311 | return res; | |
312 | } | |
313 | ||
68f3f901 RL |
314 | /* |
315 | * Validate the sequenceID sent by the server. | |
316 | * Return success if the sequenceID is one more than what we last saw on | |
317 | * this slot, accounting for wraparound. Increments the slot's sequence. | |
318 | * | |
4911096f AA |
319 | * We don't yet implement a duplicate request cache, instead we set the |
320 | * back channel ca_maxresponsesize_cached to zero. This is OK for now | |
68f3f901 RL |
321 | * since we only currently implement idempotent callbacks anyway. |
322 | * | |
323 | * We have a single slot backchannel at this time, so we don't bother | |
324 | * checking the used_slots bit array on the table. The lower layer guarantees | |
325 | * a single outstanding callback request at a time. | |
326 | */ | |
9733f0d9 | 327 | static __be32 |
b2f28bd7 | 328 | validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args) |
68f3f901 RL |
329 | { |
330 | struct nfs4_slot *slot; | |
331 | ||
332 | dprintk("%s enter. slotid %d seqid %d\n", | |
b2f28bd7 | 333 | __func__, args->csa_slotid, args->csa_sequenceid); |
68f3f901 | 334 | |
61f2e510 | 335 | if (args->csa_slotid >= NFS41_BC_MAX_CALLBACKS) |
68f3f901 RL |
336 | return htonl(NFS4ERR_BADSLOT); |
337 | ||
b2f28bd7 | 338 | slot = tbl->slots + args->csa_slotid; |
68f3f901 RL |
339 | dprintk("%s slot table seqid: %d\n", __func__, slot->seq_nr); |
340 | ||
341 | /* Normal */ | |
b2f28bd7 | 342 | if (likely(args->csa_sequenceid == slot->seq_nr + 1)) { |
68f3f901 | 343 | slot->seq_nr++; |
55a67399 | 344 | goto out_ok; |
68f3f901 RL |
345 | } |
346 | ||
347 | /* Replay */ | |
b2f28bd7 | 348 | if (args->csa_sequenceid == slot->seq_nr) { |
4911096f | 349 | dprintk("%s seqid %d is a replay\n", |
b2f28bd7 | 350 | __func__, args->csa_sequenceid); |
4911096f AA |
351 | /* Signal process_op to set this error on next op */ |
352 | if (args->csa_cachethis == 0) | |
353 | return htonl(NFS4ERR_RETRY_UNCACHED_REP); | |
354 | ||
355 | /* The ca_maxresponsesize_cached is 0 with no DRC */ | |
356 | else if (args->csa_cachethis == 1) | |
357 | return htonl(NFS4ERR_REP_TOO_BIG_TO_CACHE); | |
68f3f901 RL |
358 | } |
359 | ||
360 | /* Wraparound */ | |
b2f28bd7 | 361 | if (args->csa_sequenceid == 1 && (slot->seq_nr + 1) == 0) { |
68f3f901 | 362 | slot->seq_nr = 1; |
55a67399 | 363 | goto out_ok; |
68f3f901 RL |
364 | } |
365 | ||
366 | /* Misordered request */ | |
367 | return htonl(NFS4ERR_SEQ_MISORDERED); | |
55a67399 TM |
368 | out_ok: |
369 | tbl->highest_used_slotid = args->csa_slotid; | |
370 | return htonl(NFS4_OK); | |
68f3f901 RL |
371 | } |
372 | ||
a7989c3e MS |
373 | /* |
374 | * For each referring call triple, check the session's slot table for | |
375 | * a match. If the slot is in use and the sequence numbers match, the | |
376 | * client is still waiting for a response to the original request. | |
377 | */ | |
378 | static bool referring_call_exists(struct nfs_client *clp, | |
379 | uint32_t nrclists, | |
380 | struct referring_call_list *rclists) | |
381 | { | |
382 | bool status = 0; | |
383 | int i, j; | |
384 | struct nfs4_session *session; | |
385 | struct nfs4_slot_table *tbl; | |
386 | struct referring_call_list *rclist; | |
387 | struct referring_call *ref; | |
388 | ||
389 | /* | |
390 | * XXX When client trunking is implemented, this becomes | |
391 | * a session lookup from within the loop | |
392 | */ | |
393 | session = clp->cl_session; | |
394 | tbl = &session->fc_slot_table; | |
395 | ||
396 | for (i = 0; i < nrclists; i++) { | |
397 | rclist = &rclists[i]; | |
398 | if (memcmp(session->sess_id.data, | |
399 | rclist->rcl_sessionid.data, | |
400 | NFS4_MAX_SESSIONID_LEN) != 0) | |
401 | continue; | |
402 | ||
403 | for (j = 0; j < rclist->rcl_nrefcalls; j++) { | |
404 | ref = &rclist->rcl_refcalls[j]; | |
405 | ||
406 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u " | |
407 | "slotid %u\n", __func__, | |
408 | ((u32 *)&rclist->rcl_sessionid.data)[0], | |
409 | ((u32 *)&rclist->rcl_sessionid.data)[1], | |
410 | ((u32 *)&rclist->rcl_sessionid.data)[2], | |
411 | ((u32 *)&rclist->rcl_sessionid.data)[3], | |
412 | ref->rc_sequenceid, ref->rc_slotid); | |
413 | ||
414 | spin_lock(&tbl->slot_tbl_lock); | |
415 | status = (test_bit(ref->rc_slotid, tbl->used_slots) && | |
416 | tbl->slots[ref->rc_slotid].seq_nr == | |
417 | ref->rc_sequenceid); | |
418 | spin_unlock(&tbl->slot_tbl_lock); | |
419 | if (status) | |
420 | goto out; | |
421 | } | |
422 | } | |
423 | ||
424 | out: | |
425 | return status; | |
426 | } | |
427 | ||
9733f0d9 | 428 | __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, |
c36fca52 AA |
429 | struct cb_sequenceres *res, |
430 | struct cb_process_state *cps) | |
d49433e1 | 431 | { |
55a67399 | 432 | struct nfs4_slot_table *tbl; |
68f3f901 | 433 | struct nfs_client *clp; |
9733f0d9 | 434 | int i; |
778be232 | 435 | __be32 status = htonl(NFS4ERR_BADSESSION); |
d49433e1 | 436 | |
c7add9a9 | 437 | clp = nfs4_find_client_sessionid(cps->net, args->csa_addr, &args->csa_sessionid); |
68f3f901 RL |
438 | if (clp == NULL) |
439 | goto out; | |
440 | ||
55a67399 TM |
441 | tbl = &clp->cl_session->bc_slot_table; |
442 | ||
443 | spin_lock(&tbl->slot_tbl_lock); | |
42acd021 AA |
444 | /* state manager is resetting the session */ |
445 | if (test_bit(NFS4_SESSION_DRAINING, &clp->cl_session->session_state)) { | |
55a67399 TM |
446 | spin_unlock(&tbl->slot_tbl_lock); |
447 | status = htonl(NFS4ERR_DELAY); | |
910ac68a TM |
448 | /* Return NFS4ERR_BADSESSION if we're draining the session |
449 | * in order to reset it. | |
450 | */ | |
451 | if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) | |
452 | status = htonl(NFS4ERR_BADSESSION); | |
42acd021 AA |
453 | goto out; |
454 | } | |
455 | ||
b2f28bd7 | 456 | status = validate_seqid(&clp->cl_session->bc_slot_table, args); |
55a67399 | 457 | spin_unlock(&tbl->slot_tbl_lock); |
68f3f901 | 458 | if (status) |
c36fca52 | 459 | goto out; |
68f3f901 | 460 | |
55a67399 TM |
461 | cps->slotid = args->csa_slotid; |
462 | ||
72ce2b3c MS |
463 | /* |
464 | * Check for pending referring calls. If a match is found, a | |
465 | * related callback was received before the response to the original | |
466 | * call. | |
467 | */ | |
468 | if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) { | |
469 | status = htonl(NFS4ERR_DELAY); | |
c36fca52 | 470 | goto out; |
72ce2b3c MS |
471 | } |
472 | ||
d49433e1 BH |
473 | memcpy(&res->csr_sessionid, &args->csa_sessionid, |
474 | sizeof(res->csr_sessionid)); | |
475 | res->csr_sequenceid = args->csa_sequenceid; | |
476 | res->csr_slotid = args->csa_slotid; | |
477 | res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1; | |
478 | res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1; | |
479 | ||
68f3f901 | 480 | out: |
2c4cdf8f | 481 | cps->clp = clp; /* put in nfs4_callback_compound */ |
72ce2b3c MS |
482 | for (i = 0; i < args->csa_nrclists; i++) |
483 | kfree(args->csa_rclists[i].rcl_refcalls); | |
484 | kfree(args->csa_rclists); | |
485 | ||
c36fca52 AA |
486 | if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) { |
487 | cps->drc_status = status; | |
488 | status = 0; | |
489 | } else | |
4911096f | 490 | res->csr_status = status; |
c36fca52 | 491 | |
4911096f AA |
492 | dprintk("%s: exit with status = %d res->csr_status %d\n", __func__, |
493 | ntohl(status), ntohl(res->csr_status)); | |
494 | return status; | |
d49433e1 BH |
495 | } |
496 | ||
36840370 AB |
497 | static bool |
498 | validate_bitmap_values(unsigned long mask) | |
499 | { | |
500 | return (mask & ~RCA4_TYPE_MASK_ALL) == 0; | |
501 | } | |
502 | ||
c36fca52 AA |
503 | __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy, |
504 | struct cb_process_state *cps) | |
31f09607 | 505 | { |
9733f0d9 | 506 | __be32 status; |
31f09607 AB |
507 | fmode_t flags = 0; |
508 | ||
36840370 | 509 | status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); |
c36fca52 | 510 | if (!cps->clp) /* set in cb_sequence */ |
31f09607 AB |
511 | goto out; |
512 | ||
2446ab60 | 513 | dprintk_rcu("NFS: RECALL_ANY callback request from %s\n", |
c36fca52 | 514 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
31f09607 | 515 | |
36840370 AB |
516 | status = cpu_to_be32(NFS4ERR_INVAL); |
517 | if (!validate_bitmap_values(args->craa_type_mask)) | |
518 | goto out; | |
519 | ||
520 | status = cpu_to_be32(NFS4_OK); | |
31f09607 AB |
521 | if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *) |
522 | &args->craa_type_mask)) | |
523 | flags = FMODE_READ; | |
524 | if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *) | |
525 | &args->craa_type_mask)) | |
526 | flags |= FMODE_WRITE; | |
36840370 AB |
527 | if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *) |
528 | &args->craa_type_mask)) | |
529 | pnfs_recall_all_layouts(cps->clp); | |
31f09607 | 530 | if (flags) |
c36fca52 | 531 | nfs_expire_all_delegation_types(cps->clp, flags); |
31f09607 AB |
532 | out: |
533 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
534 | return status; | |
535 | } | |
b9efa1b2 AA |
536 | |
537 | /* Reduce the fore channel's max_slots to the target value */ | |
c36fca52 AA |
538 | __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy, |
539 | struct cb_process_state *cps) | |
b9efa1b2 | 540 | { |
b9efa1b2 | 541 | struct nfs4_slot_table *fc_tbl; |
9733f0d9 | 542 | __be32 status; |
b9efa1b2 AA |
543 | |
544 | status = htonl(NFS4ERR_OP_NOT_IN_SESSION); | |
c36fca52 | 545 | if (!cps->clp) /* set in cb_sequence */ |
b9efa1b2 AA |
546 | goto out; |
547 | ||
2446ab60 | 548 | dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target max slots %d\n", |
c36fca52 | 549 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR), |
b9efa1b2 AA |
550 | args->crsa_target_max_slots); |
551 | ||
c36fca52 | 552 | fc_tbl = &cps->clp->cl_session->fc_slot_table; |
b9efa1b2 AA |
553 | |
554 | status = htonl(NFS4ERR_BAD_HIGH_SLOT); | |
bae0ac0e | 555 | if (args->crsa_target_max_slots > fc_tbl->max_slots || |
b9efa1b2 | 556 | args->crsa_target_max_slots < 1) |
c36fca52 | 557 | goto out; |
bae0ac0e AA |
558 | |
559 | status = htonl(NFS4_OK); | |
560 | if (args->crsa_target_max_slots == fc_tbl->max_slots) | |
c36fca52 | 561 | goto out; |
b9efa1b2 AA |
562 | |
563 | fc_tbl->target_max_slots = args->crsa_target_max_slots; | |
c36fca52 | 564 | nfs41_handle_recall_slot(cps->clp); |
b9efa1b2 AA |
565 | out: |
566 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); | |
567 | return status; | |
568 | } | |
d49433e1 | 569 | #endif /* CONFIG_NFS_V4_1 */ |