1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
32 * Copyright (c) 2011 Whamcloud, Inc.
36 * This file is part of Lustre, http://www.lustre.org/
37 * Lustre is a trademark of Sun Microsystems, Inc.
39 * lustre/obdclass/obd_config.c
44 #define DEBUG_SUBSYSTEM S_CLASS
46 #include <obd_class.h>
47 #include <linux/string.h>
49 #include <liblustre.h>
50 #include <obd_class.h>
53 #include <lustre_log.h>
54 #include <lprocfs_status.h>
55 #include <libcfs/list.h>
56 #include <lustre_param.h>
58 static cfs_hash_ops_t uuid_hash_ops;
59 static cfs_hash_ops_t nid_hash_ops;
60 static cfs_hash_ops_t nid_stat_hash_ops;
62 /*********** string parsing utils *********/
64 /* returns 0 if we find this key in the buffer, else 1 */
65 int class_find_param(char *buf, char *key, char **valp)
72 if ((ptr = strstr(buf, key)) == NULL)
76 *valp = ptr + strlen(key);
82 * Finds a parameter in \a params and copies it to \a copy.
84 * Leading spaces are skipped. Next space or end of string is the
85 * parameter terminator with the exception that spaces inside single or double
86 * quotes get included into a parameter. The parameter is copied into \a copy
87 * which has to be allocated big enough by a caller, quotes are stripped in
88 * the copy and the copy is terminated by 0.
90 * On return \a params is set to next parameter or to NULL if last
91 * parameter is returned.
93 * \retval 0 if parameter is returned in \a copy
95 * \retval -EINVAL if unbalanced quota is found
97 int class_get_next_param(char **params, char *copy)
112 q1 = strpbrk(str, " '\"");
115 memcpy(copy, str, len);
122 memcpy(copy, str, len);
128 memcpy(copy, str, len);
131 /* search for the matching closing quote */
133 q2 = strchr(str, *q1);
135 CERROR("Unbalanced quota in parameters: \"%s\"\n",
140 memcpy(copy, str, len);
147 /* returns 0 if this is the first key in the buffer, else 1.
148 valp points to first char after key. */
149 int class_match_param(char *buf, char *key, char **valp)
154 if (memcmp(buf, key, strlen(key)) != 0)
158 *valp = buf + strlen(key);
163 static int parse_nid(char *buf, void *value)
165 lnet_nid_t *nid = (lnet_nid_t *)value;
167 *nid = libcfs_str2nid(buf);
168 if (*nid != LNET_NID_ANY)
171 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
175 static int parse_net(char *buf, void *value)
177 __u32 *net = (__u32 *)value;
179 *net = libcfs_str2net(buf);
180 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
192 endh is set to next separator */
193 static int class_parse_value(char *buf, int opc, void *value, char **endh)
201 while (*buf == ',' || *buf == ':')
203 if (*buf == ' ' || *buf == '/' || *buf == '\0')
206 /* nid separators or end of nids */
207 endp = strpbrk(buf, ",: /");
209 endp = buf + strlen(buf);
216 case CLASS_PARSE_NID:
217 rc = parse_nid(buf, value);
219 case CLASS_PARSE_NET:
220 rc = parse_net(buf, value);
231 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
233 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh);
236 int class_parse_net(char *buf, __u32 *net, char **endh)
238 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh);
241 /* 1 param contains key and match
242 * 0 param contains key and not match
243 * -1 param does not contain key
245 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
250 while (class_find_param(buf, key, &buf) == 0) {
251 /* please restrict to the nids pertaining to
252 * the specified nids */
253 while (class_parse_nid(buf, &tmp, &buf) == 0) {
262 int class_match_net(char *buf, char *key, __u32 net)
267 while (class_find_param(buf, key, &buf) == 0) {
268 /* please restrict to the nids pertaining to
269 * the specified networks */
270 while (class_parse_net(buf, &tmp, &buf) == 0) {
279 EXPORT_SYMBOL(class_find_param);
280 EXPORT_SYMBOL(class_get_next_param);
281 EXPORT_SYMBOL(class_match_param);
282 EXPORT_SYMBOL(class_parse_nid);
283 EXPORT_SYMBOL(class_parse_net);
284 EXPORT_SYMBOL(class_match_nid);
285 EXPORT_SYMBOL(class_match_net);
287 /********************** class fns **********************/
290 * Create a new obd device and set the type, name and uuid. If successful,
291 * the new device can be accessed by either name or uuid.
293 int class_attach(struct lustre_cfg *lcfg)
295 struct obd_device *obd = NULL;
296 char *typename, *name, *uuid;
300 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
301 CERROR("No type passed!\n");
304 typename = lustre_cfg_string(lcfg, 1);
306 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
307 CERROR("No name passed!\n");
310 name = lustre_cfg_string(lcfg, 0);
312 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
313 CERROR("No UUID passed!\n");
316 uuid = lustre_cfg_string(lcfg, 2);
318 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
319 MKSTR(typename), MKSTR(name), MKSTR(uuid));
321 obd = class_newdev(typename, name);
323 /* Already exists or out of obds */
326 CERROR("Cannot create device %s of type %s : %d\n",
330 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
332 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
333 "obd %p obd_magic %08X != %08X\n",
334 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
335 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
336 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
338 cfs_rwlock_init(&obd->obd_pool_lock);
339 obd->obd_pool_limit = 0;
340 obd->obd_pool_slv = 0;
342 CFS_INIT_LIST_HEAD(&obd->obd_exports);
343 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
344 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
345 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
346 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
347 cfs_spin_lock_init(&obd->obd_nid_lock);
348 cfs_spin_lock_init(&obd->obd_dev_lock);
349 cfs_sema_init(&obd->obd_dev_sem, 1);
350 cfs_spin_lock_init(&obd->obd_osfs_lock);
351 /* obd->obd_osfs_age must be set to a value in the distant
352 * past to guarantee a fresh statfs is fetched on mount. */
353 obd->obd_osfs_age = cfs_time_shift_64(-1000);
355 /* XXX belongs in setup not attach */
356 cfs_init_rwsem(&obd->obd_observer_link_sem);
358 cfs_init_timer(&obd->obd_recovery_timer);
359 cfs_spin_lock_init(&obd->obd_recovery_task_lock);
360 cfs_waitq_init(&obd->obd_next_transno_waitq);
361 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
362 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
363 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
364 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
365 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
367 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
369 obd->obd_conn_inprogress = 0;
372 if (len >= sizeof(obd->obd_uuid)) {
373 CERROR("uuid must be < %d bytes long\n",
374 (int)sizeof(obd->obd_uuid));
375 GOTO(out, rc = -EINVAL);
377 memcpy(obd->obd_uuid.uuid, uuid, len);
380 if (OBP(obd, attach)) {
381 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
383 GOTO(out, rc = -EINVAL);
386 /* Detach drops this */
387 cfs_spin_lock(&obd->obd_dev_lock);
388 cfs_atomic_set(&obd->obd_refcount, 1);
389 cfs_spin_unlock(&obd->obd_dev_lock);
390 lu_ref_init(&obd->obd_reference);
391 lu_ref_add(&obd->obd_reference, "attach", obd);
393 obd->obd_attached = 1;
394 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
395 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
399 class_release_dev(obd);
404 /** Create hashes, self-export, and call type-specific setup.
405 * Setup is effectively the "start this obd" call.
407 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
410 struct obd_export *exp;
413 LASSERT(obd != NULL);
414 LASSERTF(obd == class_num2obd(obd->obd_minor),
415 "obd %p != obd_devs[%d] %p\n",
416 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
417 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
418 "obd %p obd_magic %08x != %08x\n",
419 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
421 /* have we attached a type to this device? */
422 if (!obd->obd_attached) {
423 CERROR("Device %d not attached\n", obd->obd_minor);
427 if (obd->obd_set_up) {
428 CERROR("Device %d already setup (type %s)\n",
429 obd->obd_minor, obd->obd_type->typ_name);
433 /* is someone else setting us up right now? (attach inits spinlock) */
434 cfs_spin_lock(&obd->obd_dev_lock);
435 if (obd->obd_starting) {
436 cfs_spin_unlock(&obd->obd_dev_lock);
437 CERROR("Device %d setup in progress (type %s)\n",
438 obd->obd_minor, obd->obd_type->typ_name);
441 /* just leave this on forever. I can't use obd_set_up here because
442 other fns check that status, and we're not actually set up yet. */
443 obd->obd_starting = 1;
444 obd->obd_uuid_hash = NULL;
445 obd->obd_nid_hash = NULL;
446 obd->obd_nid_stats_hash = NULL;
447 cfs_spin_unlock(&obd->obd_dev_lock);
449 /* create an uuid-export lustre hash */
450 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
453 HASH_UUID_BKT_BITS, 0,
456 &uuid_hash_ops, CFS_HASH_DEFAULT);
457 if (!obd->obd_uuid_hash)
458 GOTO(err_hash, err = -ENOMEM);
460 /* create a nid-export lustre hash */
461 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
464 HASH_NID_BKT_BITS, 0,
467 &nid_hash_ops, CFS_HASH_DEFAULT);
468 if (!obd->obd_nid_hash)
469 GOTO(err_hash, err = -ENOMEM);
471 /* create a nid-stats lustre hash */
472 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
473 HASH_NID_STATS_CUR_BITS,
474 HASH_NID_STATS_MAX_BITS,
475 HASH_NID_STATS_BKT_BITS, 0,
478 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
479 if (!obd->obd_nid_stats_hash)
480 GOTO(err_hash, err = -ENOMEM);
482 exp = class_new_export(obd, &obd->obd_uuid);
484 GOTO(err_hash, err = PTR_ERR(exp));
486 obd->obd_self_export = exp;
487 cfs_list_del_init(&exp->exp_obd_chain_timed);
488 class_export_put(exp);
490 err = obd_setup(obd, lcfg);
496 cfs_spin_lock(&obd->obd_dev_lock);
497 /* cleanup drops this */
498 class_incref(obd, "setup", obd);
499 cfs_spin_unlock(&obd->obd_dev_lock);
501 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
502 obd->obd_name, obd->obd_uuid.uuid);
506 if (obd->obd_self_export) {
507 class_unlink_export(obd->obd_self_export);
508 obd->obd_self_export = NULL;
511 if (obd->obd_uuid_hash) {
512 cfs_hash_putref(obd->obd_uuid_hash);
513 obd->obd_uuid_hash = NULL;
515 if (obd->obd_nid_hash) {
516 cfs_hash_putref(obd->obd_nid_hash);
517 obd->obd_nid_hash = NULL;
519 if (obd->obd_nid_stats_hash) {
520 cfs_hash_putref(obd->obd_nid_stats_hash);
521 obd->obd_nid_stats_hash = NULL;
523 obd->obd_starting = 0;
524 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
528 /** We have finished using this obd and are ready to destroy it.
529 * There can be no more references to this obd.
531 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
535 if (obd->obd_set_up) {
536 CERROR("OBD device %d still set up\n", obd->obd_minor);
540 cfs_spin_lock(&obd->obd_dev_lock);
541 if (!obd->obd_attached) {
542 cfs_spin_unlock(&obd->obd_dev_lock);
543 CERROR("OBD device %d not attached\n", obd->obd_minor);
546 obd->obd_attached = 0;
547 cfs_spin_unlock(&obd->obd_dev_lock);
549 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
550 obd->obd_name, obd->obd_uuid.uuid);
552 class_decref(obd, "attach", obd);
556 /** Start shutting down the obd. There may be in-progess ops when
557 * this is called. We tell them to start shutting down with a call
558 * to class_disconnect_exports().
560 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
566 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
568 if (!obd->obd_set_up) {
569 CERROR("Device %d not setup\n", obd->obd_minor);
573 cfs_spin_lock(&obd->obd_dev_lock);
574 if (obd->obd_stopping) {
575 cfs_spin_unlock(&obd->obd_dev_lock);
576 CERROR("OBD %d already stopping\n", obd->obd_minor);
579 /* Leave this on forever */
580 obd->obd_stopping = 1;
582 /* wait for already-arrived-connections to finish. */
583 while (obd->obd_conn_inprogress > 0) {
584 cfs_spin_unlock(&obd->obd_dev_lock);
588 cfs_spin_lock(&obd->obd_dev_lock);
590 cfs_spin_unlock(&obd->obd_dev_lock);
592 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
593 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
599 LCONSOLE_WARN("Failing over %s\n",
602 obd->obd_no_transno = 1;
603 obd->obd_no_recov = 1;
604 if (OBP(obd, iocontrol)) {
605 obd_iocontrol(OBD_IOC_SYNC,
606 obd->obd_self_export,
611 CERROR("Unrecognised flag '%c'\n", *flag);
615 LASSERT(obd->obd_self_export);
617 /* The three references that should be remaining are the
618 * obd_self_export and the attach and setup references. */
619 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
620 /* refcounf - 3 might be the number of real exports
621 (excluding self export). But class_incref is called
622 by other things as well, so don't count on it. */
623 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
624 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
625 dump_exports(obd, 0);
626 class_disconnect_exports(obd);
629 /* Precleanup, we must make sure all exports get destroyed. */
630 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
632 CERROR("Precleanup %s returned %d\n",
635 /* destroy an uuid-export hash body */
636 if (obd->obd_uuid_hash) {
637 cfs_hash_putref(obd->obd_uuid_hash);
638 obd->obd_uuid_hash = NULL;
641 /* destroy a nid-export hash body */
642 if (obd->obd_nid_hash) {
643 cfs_hash_putref(obd->obd_nid_hash);
644 obd->obd_nid_hash = NULL;
647 /* destroy a nid-stats hash body */
648 if (obd->obd_nid_stats_hash) {
649 cfs_hash_putref(obd->obd_nid_stats_hash);
650 obd->obd_nid_stats_hash = NULL;
653 class_decref(obd, "setup", obd);
659 struct obd_device *class_incref(struct obd_device *obd,
660 const char *scope, const void *source)
662 lu_ref_add_atomic(&obd->obd_reference, scope, source);
663 cfs_atomic_inc(&obd->obd_refcount);
664 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
665 cfs_atomic_read(&obd->obd_refcount));
670 void class_decref(struct obd_device *obd, const char *scope, const void *source)
675 cfs_spin_lock(&obd->obd_dev_lock);
676 cfs_atomic_dec(&obd->obd_refcount);
677 refs = cfs_atomic_read(&obd->obd_refcount);
678 cfs_spin_unlock(&obd->obd_dev_lock);
679 lu_ref_del(&obd->obd_reference, scope, source);
681 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
683 if ((refs == 1) && obd->obd_stopping) {
684 /* All exports have been destroyed; there should
685 be no more in-progress ops by this point.*/
687 cfs_spin_lock(&obd->obd_self_export->exp_lock);
688 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
689 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
691 /* note that we'll recurse into class_decref again */
692 class_unlink_export(obd->obd_self_export);
697 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
698 obd->obd_name, obd->obd_uuid.uuid);
699 LASSERT(!obd->obd_attached);
700 if (obd->obd_stopping) {
701 /* If we're not stopping, we were never set up */
702 err = obd_cleanup(obd);
704 CERROR("Cleanup %s returned %d\n",
707 if (OBP(obd, detach)) {
708 err = OBP(obd, detach)(obd);
710 CERROR("Detach returned %d\n", err);
712 class_release_dev(obd);
716 /** Add a failover nid location.
717 * Client obd types contact server obd types using this nid list.
719 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
721 struct obd_import *imp;
722 struct obd_uuid uuid;
726 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
727 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
728 CERROR("invalid conn_uuid\n");
731 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
732 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
733 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
734 CERROR("can't add connection on non-client dev\n");
738 imp = obd->u.cli.cl_import;
740 CERROR("try to add conn on immature client dev\n");
744 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
745 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
750 /** Remove a failover nid location.
752 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
754 struct obd_import *imp;
755 struct obd_uuid uuid;
759 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
760 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
761 CERROR("invalid conn_uuid\n");
764 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
765 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
766 CERROR("can't del connection on non-client dev\n");
770 imp = obd->u.cli.cl_import;
772 CERROR("try to del conn on immature client dev\n");
776 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
777 rc = obd_del_conn(imp, &uuid);
782 CFS_LIST_HEAD(lustre_profile_list);
784 struct lustre_profile *class_get_profile(const char * prof)
786 struct lustre_profile *lprof;
789 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
790 if (!strcmp(lprof->lp_profile, prof)) {
797 /** Create a named "profile".
798 * This defines the mdc and osc names to use for a client.
799 * This also is used to define the lov to be used by a mdt.
801 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
802 int mdclen, char *mdc)
804 struct lustre_profile *lprof;
808 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
810 OBD_ALLOC(lprof, sizeof(*lprof));
813 CFS_INIT_LIST_HEAD(&lprof->lp_list);
815 LASSERT(proflen == (strlen(prof) + 1));
816 OBD_ALLOC(lprof->lp_profile, proflen);
817 if (lprof->lp_profile == NULL)
818 GOTO(out, err = -ENOMEM);
819 memcpy(lprof->lp_profile, prof, proflen);
821 LASSERT(osclen == (strlen(osc) + 1));
822 OBD_ALLOC(lprof->lp_dt, osclen);
823 if (lprof->lp_dt == NULL)
824 GOTO(out, err = -ENOMEM);
825 memcpy(lprof->lp_dt, osc, osclen);
828 LASSERT(mdclen == (strlen(mdc) + 1));
829 OBD_ALLOC(lprof->lp_md, mdclen);
830 if (lprof->lp_md == NULL)
831 GOTO(out, err = -ENOMEM);
832 memcpy(lprof->lp_md, mdc, mdclen);
835 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
840 OBD_FREE(lprof->lp_md, mdclen);
842 OBD_FREE(lprof->lp_dt, osclen);
843 if (lprof->lp_profile)
844 OBD_FREE(lprof->lp_profile, proflen);
845 OBD_FREE(lprof, sizeof(*lprof));
849 void class_del_profile(const char *prof)
851 struct lustre_profile *lprof;
854 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
856 lprof = class_get_profile(prof);
858 cfs_list_del(&lprof->lp_list);
859 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
860 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
862 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
863 OBD_FREE(lprof, sizeof *lprof);
869 void class_del_profiles(void)
871 struct lustre_profile *lprof, *n;
874 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
875 cfs_list_del(&lprof->lp_list);
876 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
877 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
879 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
880 OBD_FREE(lprof, sizeof *lprof);
885 static int class_set_global(char *ptr, int val) {
888 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
890 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
892 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
894 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
895 at_early_margin = val;
896 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
901 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
907 /* We can't call ll_process_config directly because it lives in a module that
908 must be loaded after this one. */
909 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
911 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
913 client_process_config = cpc;
915 EXPORT_SYMBOL(lustre_register_client_process_config);
918 * Rename the proc parameter in \a cfg with a new name \a new_name.
920 * \param cfg config structure which contains the proc parameter
921 * \param new_name new name of the proc parameter
923 * \retval valid-pointer pointer to the newly-allocated config structure
924 * which contains the renamed proc parameter
925 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
926 * not contain a proc parameter
927 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
929 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
930 const char *new_name)
932 struct lustre_cfg_bufs *bufs = NULL;
933 struct lustre_cfg *new_cfg = NULL;
935 char *new_param = NULL;
941 if (cfg == NULL || new_name == NULL)
942 RETURN(ERR_PTR(-EINVAL));
944 param = lustre_cfg_string(cfg, 1);
946 RETURN(ERR_PTR(-EINVAL));
948 value = strchr(param, '=');
950 name_len = strlen(param);
952 name_len = value - param;
954 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
956 OBD_ALLOC(new_param, new_len);
957 if (new_param == NULL)
958 RETURN(ERR_PTR(-ENOMEM));
960 strcpy(new_param, new_name);
962 strcat(new_param, value);
966 OBD_FREE(new_param, new_len);
967 RETURN(ERR_PTR(-ENOMEM));
970 lustre_cfg_bufs_reset(bufs, NULL);
971 lustre_cfg_bufs_init(bufs, cfg);
972 lustre_cfg_bufs_set_string(bufs, 1, new_param);
974 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
976 OBD_FREE(new_param, new_len);
979 RETURN(ERR_PTR(-ENOMEM));
981 new_cfg->lcfg_num = cfg->lcfg_num;
982 new_cfg->lcfg_flags = cfg->lcfg_flags;
983 new_cfg->lcfg_nid = cfg->lcfg_nid;
984 new_cfg->lcfg_nal = cfg->lcfg_nal;
988 EXPORT_SYMBOL(lustre_cfg_rename);
990 /** Process configuration commands given in lustre_cfg form.
991 * These may come from direct calls (e.g. class_manual_cleanup)
992 * or processing the config llog, or ioctl from lctl.
994 int class_process_config(struct lustre_cfg *lcfg)
996 struct obd_device *obd;
999 LASSERT(lcfg && !IS_ERR(lcfg));
1000 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1002 /* Commands that don't need a device */
1003 switch(lcfg->lcfg_command) {
1005 err = class_attach(lcfg);
1008 case LCFG_ADD_UUID: {
1009 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1010 " (%s)\n", lustre_cfg_string(lcfg, 1),
1011 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1013 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1016 case LCFG_DEL_UUID: {
1017 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1018 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1019 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1021 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1024 case LCFG_MOUNTOPT: {
1025 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1026 lustre_cfg_string(lcfg, 1),
1027 lustre_cfg_string(lcfg, 2),
1028 lustre_cfg_string(lcfg, 3));
1029 /* set these mount options somewhere, so ll_fill_super
1031 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1032 lustre_cfg_string(lcfg, 1),
1033 LUSTRE_CFG_BUFLEN(lcfg, 2),
1034 lustre_cfg_string(lcfg, 2),
1035 LUSTRE_CFG_BUFLEN(lcfg, 3),
1036 lustre_cfg_string(lcfg, 3));
1039 case LCFG_DEL_MOUNTOPT: {
1040 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1041 lustre_cfg_string(lcfg, 1));
1042 class_del_profile(lustre_cfg_string(lcfg, 1));
1045 case LCFG_SET_TIMEOUT: {
1046 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1047 obd_timeout, lcfg->lcfg_num);
1048 obd_timeout = max(lcfg->lcfg_num, 1U);
1051 case LCFG_SET_LDLM_TIMEOUT: {
1052 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1053 ldlm_timeout, lcfg->lcfg_num);
1054 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1055 if (ldlm_timeout >= obd_timeout)
1056 ldlm_timeout = max(obd_timeout / 3, 1U);
1060 case LCFG_SET_UPCALL: {
1061 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1062 /* COMPAT_146 Don't fail on old configs */
1066 struct cfg_marker *marker;
1067 marker = lustre_cfg_buf(lcfg, 1);
1068 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1069 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1074 /* llite has no obd */
1075 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1076 PARAM_LLITE, 0) == 0) &&
1077 client_process_config) {
1078 err = (*client_process_config)(lcfg);
1080 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1081 PARAM_SYS, &tmp) == 0)) {
1082 /* Global param settings */
1083 err = class_set_global(tmp, lcfg->lcfg_num);
1084 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
1085 unknown globals would cause config to fail */
1087 CWARN("Ignoring unknown param %s\n", tmp);
1096 /* Commands that require a device */
1097 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1099 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1100 CERROR("this lcfg command requires a device name\n");
1102 CERROR("no device for: %s\n",
1103 lustre_cfg_string(lcfg, 0));
1105 GOTO(out, err = -EINVAL);
1108 switch(lcfg->lcfg_command) {
1110 err = class_setup(obd, lcfg);
1114 err = class_detach(obd, lcfg);
1117 case LCFG_CLEANUP: {
1118 err = class_cleanup(obd, lcfg);
1121 case LCFG_ADD_CONN: {
1122 err = class_add_conn(obd, lcfg);
1125 case LCFG_DEL_CONN: {
1126 err = class_del_conn(obd, lcfg);
1129 case LCFG_POOL_NEW: {
1130 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1134 case LCFG_POOL_ADD: {
1135 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1136 lustre_cfg_string(lcfg, 3));
1140 case LCFG_POOL_REM: {
1141 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1142 lustre_cfg_string(lcfg, 3));
1146 case LCFG_POOL_DEL: {
1147 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1152 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1158 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1159 CWARN("Ignoring error %d on optional command %#x\n", err,
1160 lcfg->lcfg_command);
1166 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1167 struct lustre_cfg *lcfg, void *data)
1170 struct lprocfs_vars *var;
1172 int i, keylen, vallen;
1173 int matched = 0, j = 0;
1178 if (lcfg->lcfg_command != LCFG_PARAM) {
1179 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1183 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1184 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1185 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1186 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1187 key = lustre_cfg_buf(lcfg, i);
1188 /* Strip off prefix */
1189 class_match_param(key, prefix, &key);
1190 sval = strchr(key, '=');
1191 if (!sval || (*(sval + 1) == 0)) {
1192 CERROR("Can't parse param %s (missing '=')\n", key);
1193 /* rc = -EINVAL; continue parsing other params */
1196 keylen = sval - key;
1198 vallen = strlen(sval);
1201 /* Search proc entries */
1202 while (lvars[j].name) {
1204 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1205 keylen == strlen(var->name)) {
1208 if (var->write_fptr) {
1212 rc = (var->write_fptr)(NULL, sval,
1221 /* If the prefix doesn't match, return error so we
1222 can pass it down the stack */
1223 if (strnchr(key, keylen, '.'))
1225 CERROR("%s: unknown param %s\n",
1226 (char *)lustre_cfg_string(lcfg, 0), key);
1227 /* rc = -EINVAL; continue parsing other params */
1229 } else if (rc < 0) {
1230 CERROR("writing proc entry %s err %d\n",
1234 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1235 lustre_cfg_string(lcfg, 0),
1236 (int)strlen(prefix) - 1, prefix,
1237 (int)(sval - key - 1), key, sval);
1247 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1248 /* Don't throw config error */
1253 int class_config_dump_handler(struct llog_handle * handle,
1254 struct llog_rec_hdr *rec, void *data);
1257 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1259 #define lustre_check_exclusion(a,b) 0
1262 /** Parse a configuration llog, doing various manipulations on them
1263 * for various reasons, (modifications for compatibility, skip obsolete
1264 * records, change uuids, etc), then class_process_config() resulting
1267 static int class_config_llog_handler(struct llog_handle * handle,
1268 struct llog_rec_hdr *rec, void *data)
1270 struct config_llog_instance *clli = data;
1271 int cfg_len = rec->lrh_len;
1272 char *cfg_buf = (char*) (rec + 1);
1276 //class_config_dump_handler(handle, rec, data);
1278 switch (rec->lrh_type) {
1280 struct lustre_cfg *lcfg, *lcfg_new;
1281 struct lustre_cfg_bufs bufs;
1282 char *inst_name = NULL;
1284 int inst = 0, swab = 0;
1286 lcfg = (struct lustre_cfg *)cfg_buf;
1287 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1288 lustre_swab_lustre_cfg(lcfg);
1292 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1296 /* Figure out config state info */
1297 if (lcfg->lcfg_command == LCFG_MARKER) {
1298 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1299 lustre_swab_cfg_marker(marker, swab,
1300 LUSTRE_CFG_BUFLEN(lcfg, 1));
1301 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1302 clli->cfg_flags, marker->cm_flags);
1303 if (marker->cm_flags & CM_START) {
1304 /* all previous flags off */
1305 clli->cfg_flags = CFG_F_MARKER;
1306 if (marker->cm_flags & CM_SKIP) {
1307 clli->cfg_flags |= CFG_F_SKIP;
1308 CDEBUG(D_CONFIG, "SKIP #%d\n",
1310 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1312 lustre_check_exclusion(clli->cfg_sb,
1313 marker->cm_tgtname))) {
1314 clli->cfg_flags |= CFG_F_EXCLUDE;
1315 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1318 } else if (marker->cm_flags & CM_END) {
1319 clli->cfg_flags = 0;
1322 /* A config command without a start marker before it is
1323 illegal (post 146) */
1324 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1325 !(clli->cfg_flags & CFG_F_MARKER) &&
1326 (lcfg->lcfg_command != LCFG_MARKER)) {
1327 CWARN("Config not inside markers, ignoring! "
1328 "(inst: %p, uuid: %s, flags: %#x)\n",
1330 clli->cfg_uuid.uuid, clli->cfg_flags);
1331 clli->cfg_flags |= CFG_F_SKIP;
1333 if (clli->cfg_flags & CFG_F_SKIP) {
1334 CDEBUG(D_CONFIG, "skipping %#x\n",
1337 /* No processing! */
1342 * For interoperability between 1.8 and 2.0,
1343 * rename "mds" obd device type to "mdt".
1346 char *typename = lustre_cfg_string(lcfg, 1);
1347 char *index = lustre_cfg_string(lcfg, 2);
1349 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1350 strcmp(typename, "mds") == 0)) {
1351 CWARN("For 1.8 interoperability, rename obd "
1352 "type from mds to mdt\n");
1355 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1356 strcmp(index, "type") == 0)) {
1357 CDEBUG(D_INFO, "For 1.8 interoperability, "
1358 "set this index to '0'\n");
1364 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1365 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1366 /* Add inactive instead */
1367 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1369 lustre_cfg_bufs_init(&bufs, lcfg);
1371 if (clli && clli->cfg_instance &&
1372 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1374 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1375 sizeof(clli->cfg_instance) * 2 + 4;
1376 OBD_ALLOC(inst_name, inst_len);
1377 if (inst_name == NULL)
1378 GOTO(out, rc = -ENOMEM);
1379 sprintf(inst_name, "%s-%p",
1380 lustre_cfg_string(lcfg, 0),
1381 clli->cfg_instance);
1382 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1383 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1384 lcfg->lcfg_command, inst_name);
1387 /* we override the llog's uuid for clients, to insure they
1389 if (clli && clli->cfg_instance != NULL &&
1390 lcfg->lcfg_command == LCFG_ATTACH) {
1391 lustre_cfg_bufs_set_string(&bufs, 2,
1392 clli->cfg_uuid.uuid);
1395 * sptlrpc config record, we expect 2 data segments:
1396 * [0]: fs_name/target_name,
1398 * moving them to index [1] and [2], and insert MGC's
1399 * obdname at index [0].
1401 if (clli && clli->cfg_instance == NULL &&
1402 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1403 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1404 bufs.lcfg_buflen[1]);
1405 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1406 bufs.lcfg_buflen[0]);
1407 lustre_cfg_bufs_set_string(&bufs, 0,
1411 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1413 lcfg_new->lcfg_num = lcfg->lcfg_num;
1414 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1416 /* XXX Hack to try to remain binary compatible with
1417 * pre-newconfig logs */
1418 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1419 (lcfg->lcfg_nid >> 32) == 0) {
1420 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1422 lcfg_new->lcfg_nid =
1423 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1424 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1425 lcfg->lcfg_nal, addr,
1426 libcfs_nid2str(lcfg_new->lcfg_nid));
1428 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1431 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1433 rc = class_process_config(lcfg_new);
1434 lustre_cfg_free(lcfg_new);
1437 OBD_FREE(inst_name, inst_len);
1441 CERROR("Unknown llog record type %#x encountered\n",
1447 CERROR("Err %d on cfg command:\n", rc);
1448 class_config_dump_handler(handle, rec, data);
1453 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1454 struct config_llog_instance *cfg)
1456 struct llog_process_cat_data cd = {0, 0};
1457 struct llog_handle *llh;
1461 CDEBUG(D_INFO, "looking up llog %s\n", name);
1462 rc = llog_create(ctxt, &llh, NULL, name);
1466 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1468 GOTO(parse_out, rc);
1470 /* continue processing from where we last stopped to end-of-log */
1472 cd.lpcd_first_idx = cfg->cfg_last_idx;
1473 cd.lpcd_last_idx = 0;
1475 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1477 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1478 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1481 cfg->cfg_last_idx = cd.lpcd_last_idx;
1484 rc2 = llog_close(llh);
1491 int class_config_dump_handler(struct llog_handle * handle,
1492 struct llog_rec_hdr *rec, void *data)
1494 int cfg_len = rec->lrh_len;
1495 char *cfg_buf = (char*) (rec + 1);
1496 char *outstr, *ptr, *end;
1500 OBD_ALLOC(outstr, 256);
1506 if (rec->lrh_type == OBD_CFG_REC) {
1507 struct lustre_cfg *lcfg;
1510 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1513 lcfg = (struct lustre_cfg *)cfg_buf;
1515 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1516 lcfg->lcfg_command);
1517 if (lcfg->lcfg_flags) {
1518 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1521 if (lcfg->lcfg_num) {
1522 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1525 if (lcfg->lcfg_nid) {
1526 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1527 libcfs_nid2str(lcfg->lcfg_nid),
1530 if (lcfg->lcfg_command == LCFG_MARKER) {
1531 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1532 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1533 marker->cm_step, marker->cm_flags,
1534 marker->cm_tgtname, marker->cm_comment);
1536 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1537 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1538 lustre_cfg_string(lcfg, i));
1541 LCONSOLE(D_WARNING, " %s\n", outstr);
1543 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1547 OBD_FREE(outstr, 256);
1551 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1552 struct config_llog_instance *cfg)
1554 struct llog_handle *llh;
1558 LCONSOLE_INFO("Dumping config log %s\n", name);
1560 rc = llog_create(ctxt, &llh, NULL, name);
1564 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1566 GOTO(parse_out, rc);
1568 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1570 rc2 = llog_close(llh);
1574 LCONSOLE_INFO("End config log %s\n", name);
1579 /** Call class_cleanup and class_detach.
1580 * "Manual" only in the sense that we're faking lcfg commands.
1582 int class_manual_cleanup(struct obd_device *obd)
1585 struct lustre_cfg *lcfg;
1586 struct lustre_cfg_bufs bufs;
1591 CERROR("empty cleanup\n");
1600 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1601 obd->obd_name, flags);
1603 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1604 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1605 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1609 rc = class_process_config(lcfg);
1611 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1615 /* the lcfg is almost the same for both ops */
1616 lcfg->lcfg_command = LCFG_DETACH;
1617 rc = class_process_config(lcfg);
1619 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1621 lustre_cfg_free(lcfg);
1626 * uuid<->export lustre hash operations
1630 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1632 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1633 sizeof(((struct obd_uuid *)key)->uuid), mask);
1637 uuid_key(cfs_hlist_node_t *hnode)
1639 struct obd_export *exp;
1641 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1643 return &exp->exp_client_uuid;
1647 * NOTE: It is impossible to find an export that is in failed
1648 * state with this function
1651 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1653 struct obd_export *exp;
1656 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1658 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1663 uuid_export_object(cfs_hlist_node_t *hnode)
1665 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1669 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1671 struct obd_export *exp;
1673 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1674 class_export_get(exp);
1678 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1680 struct obd_export *exp;
1682 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1683 class_export_put(exp);
1686 static cfs_hash_ops_t uuid_hash_ops = {
1687 .hs_hash = uuid_hash,
1689 .hs_keycmp = uuid_keycmp,
1690 .hs_object = uuid_export_object,
1691 .hs_get = uuid_export_get,
1692 .hs_put_locked = uuid_export_put_locked,
1697 * nid<->export hash operations
1701 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1703 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1707 nid_key(cfs_hlist_node_t *hnode)
1709 struct obd_export *exp;
1711 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1713 RETURN(&exp->exp_connection->c_peer.nid);
1717 * NOTE: It is impossible to find an export that is in failed
1718 * state with this function
1721 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1723 struct obd_export *exp;
1726 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1728 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1733 nid_export_object(cfs_hlist_node_t *hnode)
1735 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1739 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1741 struct obd_export *exp;
1743 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1744 class_export_get(exp);
1748 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1750 struct obd_export *exp;
1752 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1753 class_export_put(exp);
1756 static cfs_hash_ops_t nid_hash_ops = {
1757 .hs_hash = nid_hash,
1759 .hs_keycmp = nid_kepcmp,
1760 .hs_object = nid_export_object,
1761 .hs_get = nid_export_get,
1762 .hs_put_locked = nid_export_put_locked,
1767 * nid<->nidstats hash operations
1771 nidstats_key(cfs_hlist_node_t *hnode)
1773 struct nid_stat *ns;
1775 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1781 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1783 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1787 nidstats_object(cfs_hlist_node_t *hnode)
1789 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1793 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1795 struct nid_stat *ns;
1797 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1802 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1804 struct nid_stat *ns;
1806 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1810 static cfs_hash_ops_t nid_stat_hash_ops = {
1811 .hs_hash = nid_hash,
1812 .hs_key = nidstats_key,
1813 .hs_keycmp = nidstats_keycmp,
1814 .hs_object = nidstats_object,
1815 .hs_get = nidstats_get,
1816 .hs_put_locked = nidstats_put_locked,