1 // SPDX-License-Identifier: GPL-2.0-only
2 /******************************************************************************
3 *******************************************************************************
4 **
5 ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
6 ** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
7 **
8 **
9 *******************************************************************************
10 ******************************************************************************/
11
12 #include "dlm_internal.h"
13 #include "lockspace.h"
14 #include "member.h"
15 #include "lowcomms.h"
16 #include "midcomms.h"
17 #include "rcom.h"
18 #include "recover.h"
19 #include "dir.h"
20 #include "config.h"
21 #include "memory.h"
22 #include "lock.h"
23 #include "util.h"
24
rcom_response(struct dlm_ls * ls)25 static int rcom_response(struct dlm_ls *ls)
26 {
27 return test_bit(LSFL_RCOM_READY, &ls->ls_flags);
28 }
29
create_rcom(struct dlm_ls * ls,int to_nodeid,int type,int len,struct dlm_rcom ** rc_ret,struct dlm_mhandle ** mh_ret)30 static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,
31 struct dlm_rcom **rc_ret, struct dlm_mhandle **mh_ret)
32 {
33 struct dlm_rcom *rc;
34 struct dlm_mhandle *mh;
35 char *mb;
36 int mb_len = sizeof(struct dlm_rcom) + len;
37
38 mh = dlm_lowcomms_get_buffer(to_nodeid, mb_len, GFP_NOFS, &mb);
39 if (!mh) {
40 log_print("create_rcom to %d type %d len %d ENOBUFS",
41 to_nodeid, type, len);
42 return -ENOBUFS;
43 }
44 memset(mb, 0, mb_len);
45
46 rc = (struct dlm_rcom *) mb;
47
48 rc->rc_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
49 rc->rc_header.h_lockspace = ls->ls_global_id;
50 rc->rc_header.h_nodeid = dlm_our_nodeid();
51 rc->rc_header.h_length = mb_len;
52 rc->rc_header.h_cmd = DLM_RCOM;
53
54 rc->rc_type = type;
55
56 spin_lock(&ls->ls_recover_lock);
57 rc->rc_seq = ls->ls_recover_seq;
58 spin_unlock(&ls->ls_recover_lock);
59
60 *mh_ret = mh;
61 *rc_ret = rc;
62 return 0;
63 }
64
send_rcom(struct dlm_ls * ls,struct dlm_mhandle * mh,struct dlm_rcom * rc)65 static void send_rcom(struct dlm_ls *ls, struct dlm_mhandle *mh,
66 struct dlm_rcom *rc)
67 {
68 dlm_rcom_out(rc);
69 dlm_lowcomms_commit_buffer(mh);
70 }
71
set_rcom_status(struct dlm_ls * ls,struct rcom_status * rs,uint32_t flags)72 static void set_rcom_status(struct dlm_ls *ls, struct rcom_status *rs,
73 uint32_t flags)
74 {
75 rs->rs_flags = cpu_to_le32(flags);
76 }
77
78 /* When replying to a status request, a node also sends back its
79 configuration values. The requesting node then checks that the remote
80 node is configured the same way as itself. */
81
set_rcom_config(struct dlm_ls * ls,struct rcom_config * rf,uint32_t num_slots)82 static void set_rcom_config(struct dlm_ls *ls, struct rcom_config *rf,
83 uint32_t num_slots)
84 {
85 rf->rf_lvblen = cpu_to_le32(ls->ls_lvblen);
86 rf->rf_lsflags = cpu_to_le32(ls->ls_exflags);
87
88 rf->rf_our_slot = cpu_to_le16(ls->ls_slot);
89 rf->rf_num_slots = cpu_to_le16(num_slots);
90 rf->rf_generation = cpu_to_le32(ls->ls_generation);
91 }
92
check_rcom_config(struct dlm_ls * ls,struct dlm_rcom * rc,int nodeid)93 static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
94 {
95 struct rcom_config *rf = (struct rcom_config *) rc->rc_buf;
96
97 if ((rc->rc_header.h_version & 0xFFFF0000) != DLM_HEADER_MAJOR) {
98 log_error(ls, "version mismatch: %x nodeid %d: %x",
99 DLM_HEADER_MAJOR | DLM_HEADER_MINOR, nodeid,
100 rc->rc_header.h_version);
101 return -EPROTO;
102 }
103
104 if (le32_to_cpu(rf->rf_lvblen) != ls->ls_lvblen ||
105 le32_to_cpu(rf->rf_lsflags) != ls->ls_exflags) {
106 log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",
107 ls->ls_lvblen, ls->ls_exflags, nodeid,
108 le32_to_cpu(rf->rf_lvblen),
109 le32_to_cpu(rf->rf_lsflags));
110 return -EPROTO;
111 }
112 return 0;
113 }
114
allow_sync_reply(struct dlm_ls * ls,uint64_t * new_seq)115 static void allow_sync_reply(struct dlm_ls *ls, uint64_t *new_seq)
116 {
117 spin_lock(&ls->ls_rcom_spin);
118 *new_seq = ++ls->ls_rcom_seq;
119 set_bit(LSFL_RCOM_WAIT, &ls->ls_flags);
120 spin_unlock(&ls->ls_rcom_spin);
121 }
122
disallow_sync_reply(struct dlm_ls * ls)123 static void disallow_sync_reply(struct dlm_ls *ls)
124 {
125 spin_lock(&ls->ls_rcom_spin);
126 clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);
127 clear_bit(LSFL_RCOM_READY, &ls->ls_flags);
128 spin_unlock(&ls->ls_rcom_spin);
129 }
130
131 /*
132 * low nodeid gathers one slot value at a time from each node.
133 * it sets need_slots=0, and saves rf_our_slot returned from each
134 * rcom_config.
135 *
136 * other nodes gather all slot values at once from the low nodeid.
137 * they set need_slots=1, and ignore the rf_our_slot returned from each
138 * rcom_config. they use the rf_num_slots returned from the low
139 * node's rcom_config.
140 */
141
dlm_rcom_status(struct dlm_ls * ls,int nodeid,uint32_t status_flags)142 int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags)
143 {
144 struct dlm_rcom *rc;
145 struct dlm_mhandle *mh;
146 int error = 0;
147
148 ls->ls_recover_nodeid = nodeid;
149
150 if (nodeid == dlm_our_nodeid()) {
151 rc = ls->ls_recover_buf;
152 rc->rc_result = dlm_recover_status(ls);
153 goto out;
154 }
155
156 retry:
157 error = create_rcom(ls, nodeid, DLM_RCOM_STATUS,
158 sizeof(struct rcom_status), &rc, &mh);
159 if (error)
160 goto out;
161
162 set_rcom_status(ls, (struct rcom_status *)rc->rc_buf, status_flags);
163
164 allow_sync_reply(ls, &rc->rc_id);
165 memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);
166
167 send_rcom(ls, mh, rc);
168
169 error = dlm_wait_function(ls, &rcom_response);
170 disallow_sync_reply(ls);
171 if (error == -ETIMEDOUT)
172 goto retry;
173 if (error)
174 goto out;
175
176 rc = ls->ls_recover_buf;
177
178 if (rc->rc_result == -ESRCH) {
179 /* we pretend the remote lockspace exists with 0 status */
180 log_debug(ls, "remote node %d not ready", nodeid);
181 rc->rc_result = 0;
182 error = 0;
183 } else {
184 error = check_rcom_config(ls, rc, nodeid);
185 }
186
187 /* the caller looks at rc_result for the remote recovery status */
188 out:
189 return error;
190 }
191
receive_rcom_status(struct dlm_ls * ls,struct dlm_rcom * rc_in)192 static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in)
193 {
194 struct dlm_rcom *rc;
195 struct dlm_mhandle *mh;
196 struct rcom_status *rs;
197 uint32_t status;
198 int nodeid = rc_in->rc_header.h_nodeid;
199 int len = sizeof(struct rcom_config);
200 int num_slots = 0;
201 int error;
202
203 if (!dlm_slots_version(&rc_in->rc_header)) {
204 status = dlm_recover_status(ls);
205 goto do_create;
206 }
207
208 rs = (struct rcom_status *)rc_in->rc_buf;
209
210 if (!(le32_to_cpu(rs->rs_flags) & DLM_RSF_NEED_SLOTS)) {
211 status = dlm_recover_status(ls);
212 goto do_create;
213 }
214
215 spin_lock(&ls->ls_recover_lock);
216 status = ls->ls_recover_status;
217 num_slots = ls->ls_num_slots;
218 spin_unlock(&ls->ls_recover_lock);
219 len += num_slots * sizeof(struct rcom_slot);
220
221 do_create:
222 error = create_rcom(ls, nodeid, DLM_RCOM_STATUS_REPLY,
223 len, &rc, &mh);
224 if (error)
225 return;
226
227 rc->rc_id = rc_in->rc_id;
228 rc->rc_seq_reply = rc_in->rc_seq;
229 rc->rc_result = status;
230
231 set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, num_slots);
232
233 if (!num_slots)
234 goto do_send;
235
236 spin_lock(&ls->ls_recover_lock);
237 if (ls->ls_num_slots != num_slots) {
238 spin_unlock(&ls->ls_recover_lock);
239 log_debug(ls, "receive_rcom_status num_slots %d to %d",
240 num_slots, ls->ls_num_slots);
241 rc->rc_result = 0;
242 set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, 0);
243 goto do_send;
244 }
245
246 dlm_slots_copy_out(ls, rc);
247 spin_unlock(&ls->ls_recover_lock);
248
249 do_send:
250 send_rcom(ls, mh, rc);
251 }
252
receive_sync_reply(struct dlm_ls * ls,struct dlm_rcom * rc_in)253 static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
254 {
255 spin_lock(&ls->ls_rcom_spin);
256 if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) ||
257 rc_in->rc_id != ls->ls_rcom_seq) {
258 log_debug(ls, "reject reply %d from %d seq %llx expect %llx",
259 rc_in->rc_type, rc_in->rc_header.h_nodeid,
260 (unsigned long long)rc_in->rc_id,
261 (unsigned long long)ls->ls_rcom_seq);
262 goto out;
263 }
264 memcpy(ls->ls_recover_buf, rc_in, rc_in->rc_header.h_length);
265 set_bit(LSFL_RCOM_READY, &ls->ls_flags);
266 clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);
267 wake_up(&ls->ls_wait_general);
268 out:
269 spin_unlock(&ls->ls_rcom_spin);
270 }
271
dlm_rcom_names(struct dlm_ls * ls,int nodeid,char * last_name,int last_len)272 int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)
273 {
274 struct dlm_rcom *rc;
275 struct dlm_mhandle *mh;
276 int error = 0;
277
278 ls->ls_recover_nodeid = nodeid;
279
280 retry:
281 error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len, &rc, &mh);
282 if (error)
283 goto out;
284 memcpy(rc->rc_buf, last_name, last_len);
285
286 allow_sync_reply(ls, &rc->rc_id);
287 memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);
288
289 send_rcom(ls, mh, rc);
290
291 error = dlm_wait_function(ls, &rcom_response);
292 disallow_sync_reply(ls);
293 if (error == -ETIMEDOUT)
294 goto retry;
295 out:
296 return error;
297 }
298
receive_rcom_names(struct dlm_ls * ls,struct dlm_rcom * rc_in)299 static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in)
300 {
301 struct dlm_rcom *rc;
302 struct dlm_mhandle *mh;
303 int error, inlen, outlen, nodeid;
304
305 nodeid = rc_in->rc_header.h_nodeid;
306 inlen = rc_in->rc_header.h_length - sizeof(struct dlm_rcom);
307 outlen = dlm_config.ci_buffer_size - sizeof(struct dlm_rcom);
308
309 error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen, &rc, &mh);
310 if (error)
311 return;
312 rc->rc_id = rc_in->rc_id;
313 rc->rc_seq_reply = rc_in->rc_seq;
314
315 dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen,
316 nodeid);
317 send_rcom(ls, mh, rc);
318 }
319
dlm_send_rcom_lookup(struct dlm_rsb * r,int dir_nodeid)320 int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid)
321 {
322 struct dlm_rcom *rc;
323 struct dlm_mhandle *mh;
324 struct dlm_ls *ls = r->res_ls;
325 int error;
326
327 error = create_rcom(ls, dir_nodeid, DLM_RCOM_LOOKUP, r->res_length,
328 &rc, &mh);
329 if (error)
330 goto out;
331 memcpy(rc->rc_buf, r->res_name, r->res_length);
332 rc->rc_id = (unsigned long) r->res_id;
333
334 send_rcom(ls, mh, rc);
335 out:
336 return error;
337 }
338
receive_rcom_lookup(struct dlm_ls * ls,struct dlm_rcom * rc_in)339 static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in)
340 {
341 struct dlm_rcom *rc;
342 struct dlm_mhandle *mh;
343 int error, ret_nodeid, nodeid = rc_in->rc_header.h_nodeid;
344 int len = rc_in->rc_header.h_length - sizeof(struct dlm_rcom);
345
346 error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh);
347 if (error)
348 return;
349
350 /* Old code would send this special id to trigger a debug dump. */
351 if (rc_in->rc_id == 0xFFFFFFFF) {
352 log_error(ls, "receive_rcom_lookup dump from %d", nodeid);
353 dlm_dump_rsb_name(ls, rc_in->rc_buf, len);
354 return;
355 }
356
357 error = dlm_master_lookup(ls, nodeid, rc_in->rc_buf, len,
358 DLM_LU_RECOVER_MASTER, &ret_nodeid, NULL);
359 if (error)
360 ret_nodeid = error;
361 rc->rc_result = ret_nodeid;
362 rc->rc_id = rc_in->rc_id;
363 rc->rc_seq_reply = rc_in->rc_seq;
364
365 send_rcom(ls, mh, rc);
366 }
367
receive_rcom_lookup_reply(struct dlm_ls * ls,struct dlm_rcom * rc_in)368 static void receive_rcom_lookup_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
369 {
370 dlm_recover_master_reply(ls, rc_in);
371 }
372
pack_rcom_lock(struct dlm_rsb * r,struct dlm_lkb * lkb,struct rcom_lock * rl)373 static void pack_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb,
374 struct rcom_lock *rl)
375 {
376 memset(rl, 0, sizeof(*rl));
377
378 rl->rl_ownpid = cpu_to_le32(lkb->lkb_ownpid);
379 rl->rl_lkid = cpu_to_le32(lkb->lkb_id);
380 rl->rl_exflags = cpu_to_le32(lkb->lkb_exflags);
381 rl->rl_flags = cpu_to_le32(lkb->lkb_flags);
382 rl->rl_lvbseq = cpu_to_le32(lkb->lkb_lvbseq);
383 rl->rl_rqmode = lkb->lkb_rqmode;
384 rl->rl_grmode = lkb->lkb_grmode;
385 rl->rl_status = lkb->lkb_status;
386 rl->rl_wait_type = cpu_to_le16(lkb->lkb_wait_type);
387
388 if (lkb->lkb_bastfn)
389 rl->rl_asts |= DLM_CB_BAST;
390 if (lkb->lkb_astfn)
391 rl->rl_asts |= DLM_CB_CAST;
392
393 rl->rl_namelen = cpu_to_le16(r->res_length);
394 memcpy(rl->rl_name, r->res_name, r->res_length);
395
396 /* FIXME: might we have an lvb without DLM_LKF_VALBLK set ?
397 If so, receive_rcom_lock_args() won't take this copy. */
398
399 if (lkb->lkb_lvbptr)
400 memcpy(rl->rl_lvb, lkb->lkb_lvbptr, r->res_ls->ls_lvblen);
401 }
402
dlm_send_rcom_lock(struct dlm_rsb * r,struct dlm_lkb * lkb)403 int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb)
404 {
405 struct dlm_ls *ls = r->res_ls;
406 struct dlm_rcom *rc;
407 struct dlm_mhandle *mh;
408 struct rcom_lock *rl;
409 int error, len = sizeof(struct rcom_lock);
410
411 if (lkb->lkb_lvbptr)
412 len += ls->ls_lvblen;
413
414 error = create_rcom(ls, r->res_nodeid, DLM_RCOM_LOCK, len, &rc, &mh);
415 if (error)
416 goto out;
417
418 rl = (struct rcom_lock *) rc->rc_buf;
419 pack_rcom_lock(r, lkb, rl);
420 rc->rc_id = (unsigned long) r;
421
422 send_rcom(ls, mh, rc);
423 out:
424 return error;
425 }
426
427 /* needs at least dlm_rcom + rcom_lock */
receive_rcom_lock(struct dlm_ls * ls,struct dlm_rcom * rc_in)428 static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in)
429 {
430 struct dlm_rcom *rc;
431 struct dlm_mhandle *mh;
432 int error, nodeid = rc_in->rc_header.h_nodeid;
433
434 dlm_recover_master_copy(ls, rc_in);
435
436 error = create_rcom(ls, nodeid, DLM_RCOM_LOCK_REPLY,
437 sizeof(struct rcom_lock), &rc, &mh);
438 if (error)
439 return;
440
441 /* We send back the same rcom_lock struct we received, but
442 dlm_recover_master_copy() has filled in rl_remid and rl_result */
443
444 memcpy(rc->rc_buf, rc_in->rc_buf, sizeof(struct rcom_lock));
445 rc->rc_id = rc_in->rc_id;
446 rc->rc_seq_reply = rc_in->rc_seq;
447
448 send_rcom(ls, mh, rc);
449 }
450
451 /* If the lockspace doesn't exist then still send a status message
452 back; it's possible that it just doesn't have its global_id yet. */
453
dlm_send_ls_not_ready(int nodeid,struct dlm_rcom * rc_in)454 int dlm_send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in)
455 {
456 struct dlm_rcom *rc;
457 struct rcom_config *rf;
458 struct dlm_mhandle *mh;
459 char *mb;
460 int mb_len = sizeof(struct dlm_rcom) + sizeof(struct rcom_config);
461
462 mh = dlm_lowcomms_get_buffer(nodeid, mb_len, GFP_NOFS, &mb);
463 if (!mh)
464 return -ENOBUFS;
465 memset(mb, 0, mb_len);
466
467 rc = (struct dlm_rcom *) mb;
468
469 rc->rc_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
470 rc->rc_header.h_lockspace = rc_in->rc_header.h_lockspace;
471 rc->rc_header.h_nodeid = dlm_our_nodeid();
472 rc->rc_header.h_length = mb_len;
473 rc->rc_header.h_cmd = DLM_RCOM;
474
475 rc->rc_type = DLM_RCOM_STATUS_REPLY;
476 rc->rc_id = rc_in->rc_id;
477 rc->rc_seq_reply = rc_in->rc_seq;
478 rc->rc_result = -ESRCH;
479
480 rf = (struct rcom_config *) rc->rc_buf;
481 rf->rf_lvblen = cpu_to_le32(~0U);
482
483 dlm_rcom_out(rc);
484 dlm_lowcomms_commit_buffer(mh);
485
486 return 0;
487 }
488
489 /*
490 * Ignore messages for stage Y before we set
491 * recover_status bit for stage X:
492 *
493 * recover_status = 0
494 *
495 * dlm_recover_members()
496 * - send nothing
497 * - recv nothing
498 * - ignore NAMES, NAMES_REPLY
499 * - ignore LOOKUP, LOOKUP_REPLY
500 * - ignore LOCK, LOCK_REPLY
501 *
502 * recover_status |= NODES
503 *
504 * dlm_recover_members_wait()
505 *
506 * dlm_recover_directory()
507 * - send NAMES
508 * - recv NAMES_REPLY
509 * - ignore LOOKUP, LOOKUP_REPLY
510 * - ignore LOCK, LOCK_REPLY
511 *
512 * recover_status |= DIR
513 *
514 * dlm_recover_directory_wait()
515 *
516 * dlm_recover_masters()
517 * - send LOOKUP
518 * - recv LOOKUP_REPLY
519 *
520 * dlm_recover_locks()
521 * - send LOCKS
522 * - recv LOCKS_REPLY
523 *
524 * recover_status |= LOCKS
525 *
526 * dlm_recover_locks_wait()
527 *
528 * recover_status |= DONE
529 */
530
531 /* Called by dlm_recv; corresponds to dlm_receive_message() but special
532 recovery-only comms are sent through here. */
533
dlm_receive_rcom(struct dlm_ls * ls,struct dlm_rcom * rc,int nodeid)534 void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
535 {
536 int lock_size = sizeof(struct dlm_rcom) + sizeof(struct rcom_lock);
537 int stop, reply = 0, names = 0, lookup = 0, lock = 0;
538 uint32_t status;
539 uint64_t seq;
540
541 switch (rc->rc_type) {
542 case DLM_RCOM_STATUS_REPLY:
543 reply = 1;
544 break;
545 case DLM_RCOM_NAMES:
546 names = 1;
547 break;
548 case DLM_RCOM_NAMES_REPLY:
549 names = 1;
550 reply = 1;
551 break;
552 case DLM_RCOM_LOOKUP:
553 lookup = 1;
554 break;
555 case DLM_RCOM_LOOKUP_REPLY:
556 lookup = 1;
557 reply = 1;
558 break;
559 case DLM_RCOM_LOCK:
560 lock = 1;
561 break;
562 case DLM_RCOM_LOCK_REPLY:
563 lock = 1;
564 reply = 1;
565 break;
566 };
567
568 spin_lock(&ls->ls_recover_lock);
569 status = ls->ls_recover_status;
570 stop = test_bit(LSFL_RECOVER_STOP, &ls->ls_flags);
571 seq = ls->ls_recover_seq;
572 spin_unlock(&ls->ls_recover_lock);
573
574 if (stop && (rc->rc_type != DLM_RCOM_STATUS))
575 goto ignore;
576
577 if (reply && (rc->rc_seq_reply != seq))
578 goto ignore;
579
580 if (!(status & DLM_RS_NODES) && (names || lookup || lock))
581 goto ignore;
582
583 if (!(status & DLM_RS_DIR) && (lookup || lock))
584 goto ignore;
585
586 switch (rc->rc_type) {
587 case DLM_RCOM_STATUS:
588 receive_rcom_status(ls, rc);
589 break;
590
591 case DLM_RCOM_NAMES:
592 receive_rcom_names(ls, rc);
593 break;
594
595 case DLM_RCOM_LOOKUP:
596 receive_rcom_lookup(ls, rc);
597 break;
598
599 case DLM_RCOM_LOCK:
600 if (rc->rc_header.h_length < lock_size)
601 goto Eshort;
602 receive_rcom_lock(ls, rc);
603 break;
604
605 case DLM_RCOM_STATUS_REPLY:
606 receive_sync_reply(ls, rc);
607 break;
608
609 case DLM_RCOM_NAMES_REPLY:
610 receive_sync_reply(ls, rc);
611 break;
612
613 case DLM_RCOM_LOOKUP_REPLY:
614 receive_rcom_lookup_reply(ls, rc);
615 break;
616
617 case DLM_RCOM_LOCK_REPLY:
618 if (rc->rc_header.h_length < lock_size)
619 goto Eshort;
620 dlm_recover_process_copy(ls, rc);
621 break;
622
623 default:
624 log_error(ls, "receive_rcom bad type %d", rc->rc_type);
625 }
626 return;
627
628 ignore:
629 log_limit(ls, "dlm_receive_rcom ignore msg %d "
630 "from %d %llu %llu recover seq %llu sts %x gen %u",
631 rc->rc_type,
632 nodeid,
633 (unsigned long long)rc->rc_seq,
634 (unsigned long long)rc->rc_seq_reply,
635 (unsigned long long)seq,
636 status, ls->ls_generation);
637 return;
638 Eshort:
639 log_error(ls, "recovery message %d from %d is too short",
640 rc->rc_type, nodeid);
641 }
642
643