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);
370 if (len >= sizeof(obd->obd_uuid)) {
371 CERROR("uuid must be < %d bytes long\n",
372 (int)sizeof(obd->obd_uuid));
373 GOTO(out, rc = -EINVAL);
375 memcpy(obd->obd_uuid.uuid, uuid, len);
378 if (OBP(obd, attach)) {
379 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
381 GOTO(out, rc = -EINVAL);
384 /* Detach drops this */
385 cfs_spin_lock(&obd->obd_dev_lock);
386 cfs_atomic_set(&obd->obd_refcount, 1);
387 cfs_spin_unlock(&obd->obd_dev_lock);
388 lu_ref_init(&obd->obd_reference);
389 lu_ref_add(&obd->obd_reference, "attach", obd);
391 obd->obd_attached = 1;
392 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
393 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
397 class_release_dev(obd);
402 /** Create hashes, self-export, and call type-specific setup.
403 * Setup is effectively the "start this obd" call.
405 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
408 struct obd_export *exp;
411 LASSERT(obd != NULL);
412 LASSERTF(obd == class_num2obd(obd->obd_minor),
413 "obd %p != obd_devs[%d] %p\n",
414 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
415 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
416 "obd %p obd_magic %08x != %08x\n",
417 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
419 /* have we attached a type to this device? */
420 if (!obd->obd_attached) {
421 CERROR("Device %d not attached\n", obd->obd_minor);
425 if (obd->obd_set_up) {
426 CERROR("Device %d already setup (type %s)\n",
427 obd->obd_minor, obd->obd_type->typ_name);
431 /* is someone else setting us up right now? (attach inits spinlock) */
432 cfs_spin_lock(&obd->obd_dev_lock);
433 if (obd->obd_starting) {
434 cfs_spin_unlock(&obd->obd_dev_lock);
435 CERROR("Device %d setup in progress (type %s)\n",
436 obd->obd_minor, obd->obd_type->typ_name);
439 /* just leave this on forever. I can't use obd_set_up here because
440 other fns check that status, and we're not actually set up yet. */
441 obd->obd_starting = 1;
442 obd->obd_uuid_hash = NULL;
443 obd->obd_nid_hash = NULL;
444 obd->obd_nid_stats_hash = NULL;
445 cfs_spin_unlock(&obd->obd_dev_lock);
447 /* create an uuid-export lustre hash */
448 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
451 HASH_UUID_BKT_BITS, 0,
454 &uuid_hash_ops, CFS_HASH_DEFAULT);
455 if (!obd->obd_uuid_hash)
456 GOTO(err_hash, err = -ENOMEM);
458 /* create a nid-export lustre hash */
459 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
462 HASH_NID_BKT_BITS, 0,
465 &nid_hash_ops, CFS_HASH_DEFAULT);
466 if (!obd->obd_nid_hash)
467 GOTO(err_hash, err = -ENOMEM);
469 /* create a nid-stats lustre hash */
470 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
471 HASH_NID_STATS_CUR_BITS,
472 HASH_NID_STATS_MAX_BITS,
473 HASH_NID_STATS_BKT_BITS, 0,
476 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
477 if (!obd->obd_nid_stats_hash)
478 GOTO(err_hash, err = -ENOMEM);
480 exp = class_new_export(obd, &obd->obd_uuid);
482 GOTO(err_hash, err = PTR_ERR(exp));
484 obd->obd_self_export = exp;
485 cfs_list_del_init(&exp->exp_obd_chain_timed);
486 class_export_put(exp);
488 err = obd_setup(obd, lcfg);
494 cfs_spin_lock(&obd->obd_dev_lock);
495 /* cleanup drops this */
496 class_incref(obd, "setup", obd);
497 cfs_spin_unlock(&obd->obd_dev_lock);
499 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
500 obd->obd_name, obd->obd_uuid.uuid);
504 if (obd->obd_self_export) {
505 class_unlink_export(obd->obd_self_export);
506 obd->obd_self_export = NULL;
509 if (obd->obd_uuid_hash) {
510 cfs_hash_putref(obd->obd_uuid_hash);
511 obd->obd_uuid_hash = NULL;
513 if (obd->obd_nid_hash) {
514 cfs_hash_putref(obd->obd_nid_hash);
515 obd->obd_nid_hash = NULL;
517 if (obd->obd_nid_stats_hash) {
518 cfs_hash_putref(obd->obd_nid_stats_hash);
519 obd->obd_nid_stats_hash = NULL;
521 obd->obd_starting = 0;
522 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
526 /** We have finished using this obd and are ready to destroy it.
527 * There can be no more references to this obd.
529 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
533 if (obd->obd_set_up) {
534 CERROR("OBD device %d still set up\n", obd->obd_minor);
538 cfs_spin_lock(&obd->obd_dev_lock);
539 if (!obd->obd_attached) {
540 cfs_spin_unlock(&obd->obd_dev_lock);
541 CERROR("OBD device %d not attached\n", obd->obd_minor);
544 obd->obd_attached = 0;
545 cfs_spin_unlock(&obd->obd_dev_lock);
547 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
548 obd->obd_name, obd->obd_uuid.uuid);
550 class_decref(obd, "attach", obd);
554 /** Start shutting down the obd. There may be in-progess ops when
555 * this is called. We tell them to start shutting down with a call
556 * to class_disconnect_exports().
558 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
564 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
566 if (!obd->obd_set_up) {
567 CERROR("Device %d not setup\n", obd->obd_minor);
571 cfs_spin_lock(&obd->obd_dev_lock);
572 if (obd->obd_stopping) {
573 cfs_spin_unlock(&obd->obd_dev_lock);
574 CERROR("OBD %d already stopping\n", obd->obd_minor);
577 /* Leave this on forever */
578 obd->obd_stopping = 1;
579 cfs_spin_unlock(&obd->obd_dev_lock);
581 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
582 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
588 LCONSOLE_WARN("Failing over %s\n",
591 obd->obd_no_transno = 1;
592 obd->obd_no_recov = 1;
593 if (OBP(obd, iocontrol)) {
594 obd_iocontrol(OBD_IOC_SYNC,
595 obd->obd_self_export,
600 CERROR("Unrecognised flag '%c'\n", *flag);
604 LASSERT(obd->obd_self_export);
606 /* The three references that should be remaining are the
607 * obd_self_export and the attach and setup references. */
608 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
609 /* refcounf - 3 might be the number of real exports
610 (excluding self export). But class_incref is called
611 by other things as well, so don't count on it. */
612 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
613 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
614 dump_exports(obd, 0);
615 class_disconnect_exports(obd);
618 /* destroy an uuid-export hash body */
619 if (obd->obd_uuid_hash) {
620 cfs_hash_putref(obd->obd_uuid_hash);
621 obd->obd_uuid_hash = NULL;
624 /* destroy a nid-export hash body */
625 if (obd->obd_nid_hash) {
626 cfs_hash_putref(obd->obd_nid_hash);
627 obd->obd_nid_hash = NULL;
630 /* destroy a nid-stats hash body */
631 if (obd->obd_nid_stats_hash) {
632 cfs_hash_putref(obd->obd_nid_stats_hash);
633 obd->obd_nid_stats_hash = NULL;
636 /* Precleanup, we must make sure all exports get destroyed. */
637 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
639 CERROR("Precleanup %s returned %d\n",
641 class_decref(obd, "setup", obd);
646 struct obd_device *class_incref(struct obd_device *obd,
647 const char *scope, const void *source)
649 lu_ref_add_atomic(&obd->obd_reference, scope, source);
650 cfs_atomic_inc(&obd->obd_refcount);
651 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
652 cfs_atomic_read(&obd->obd_refcount));
657 void class_decref(struct obd_device *obd, const char *scope, const void *source)
662 cfs_spin_lock(&obd->obd_dev_lock);
663 cfs_atomic_dec(&obd->obd_refcount);
664 refs = cfs_atomic_read(&obd->obd_refcount);
665 cfs_spin_unlock(&obd->obd_dev_lock);
666 lu_ref_del(&obd->obd_reference, scope, source);
668 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
670 if ((refs == 1) && obd->obd_stopping) {
671 /* All exports have been destroyed; there should
672 be no more in-progress ops by this point.*/
674 cfs_spin_lock(&obd->obd_self_export->exp_lock);
675 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
676 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
678 /* note that we'll recurse into class_decref again */
679 class_unlink_export(obd->obd_self_export);
684 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
685 obd->obd_name, obd->obd_uuid.uuid);
686 LASSERT(!obd->obd_attached);
687 if (obd->obd_stopping) {
688 /* If we're not stopping, we were never set up */
689 err = obd_cleanup(obd);
691 CERROR("Cleanup %s returned %d\n",
694 if (OBP(obd, detach)) {
695 err = OBP(obd, detach)(obd);
697 CERROR("Detach returned %d\n", err);
699 class_release_dev(obd);
703 /** Add a failover nid location.
704 * Client obd types contact server obd types using this nid list.
706 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
708 struct obd_import *imp;
709 struct obd_uuid uuid;
713 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
714 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
715 CERROR("invalid conn_uuid\n");
718 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
719 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
720 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
721 CERROR("can't add connection on non-client dev\n");
725 imp = obd->u.cli.cl_import;
727 CERROR("try to add conn on immature client dev\n");
731 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
732 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
737 /** Remove a failover nid location.
739 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
741 struct obd_import *imp;
742 struct obd_uuid uuid;
746 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
747 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
748 CERROR("invalid conn_uuid\n");
751 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
752 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
753 CERROR("can't del connection on non-client dev\n");
757 imp = obd->u.cli.cl_import;
759 CERROR("try to del conn on immature client dev\n");
763 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
764 rc = obd_del_conn(imp, &uuid);
769 CFS_LIST_HEAD(lustre_profile_list);
771 struct lustre_profile *class_get_profile(const char * prof)
773 struct lustre_profile *lprof;
776 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
777 if (!strcmp(lprof->lp_profile, prof)) {
784 /** Create a named "profile".
785 * This defines the mdc and osc names to use for a client.
786 * This also is used to define the lov to be used by a mdt.
788 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
789 int mdclen, char *mdc)
791 struct lustre_profile *lprof;
795 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
797 OBD_ALLOC(lprof, sizeof(*lprof));
800 CFS_INIT_LIST_HEAD(&lprof->lp_list);
802 LASSERT(proflen == (strlen(prof) + 1));
803 OBD_ALLOC(lprof->lp_profile, proflen);
804 if (lprof->lp_profile == NULL)
805 GOTO(out, err = -ENOMEM);
806 memcpy(lprof->lp_profile, prof, proflen);
808 LASSERT(osclen == (strlen(osc) + 1));
809 OBD_ALLOC(lprof->lp_dt, osclen);
810 if (lprof->lp_dt == NULL)
811 GOTO(out, err = -ENOMEM);
812 memcpy(lprof->lp_dt, osc, osclen);
815 LASSERT(mdclen == (strlen(mdc) + 1));
816 OBD_ALLOC(lprof->lp_md, mdclen);
817 if (lprof->lp_md == NULL)
818 GOTO(out, err = -ENOMEM);
819 memcpy(lprof->lp_md, mdc, mdclen);
822 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
827 OBD_FREE(lprof->lp_md, mdclen);
829 OBD_FREE(lprof->lp_dt, osclen);
830 if (lprof->lp_profile)
831 OBD_FREE(lprof->lp_profile, proflen);
832 OBD_FREE(lprof, sizeof(*lprof));
836 void class_del_profile(const char *prof)
838 struct lustre_profile *lprof;
841 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
843 lprof = class_get_profile(prof);
845 cfs_list_del(&lprof->lp_list);
846 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
847 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
849 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
850 OBD_FREE(lprof, sizeof *lprof);
856 void class_del_profiles(void)
858 struct lustre_profile *lprof, *n;
861 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
862 cfs_list_del(&lprof->lp_list);
863 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
864 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
866 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
867 OBD_FREE(lprof, sizeof *lprof);
872 static int class_set_global(char *ptr, int val) {
875 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
877 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
879 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
881 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
882 at_early_margin = val;
883 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
888 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
894 /* We can't call ll_process_config directly because it lives in a module that
895 must be loaded after this one. */
896 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
898 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
900 client_process_config = cpc;
902 EXPORT_SYMBOL(lustre_register_client_process_config);
904 /** Process configuration commands given in lustre_cfg form.
905 * These may come from direct calls (e.g. class_manual_cleanup)
906 * or processing the config llog, or ioctl from lctl.
908 int class_process_config(struct lustre_cfg *lcfg)
910 struct obd_device *obd;
913 LASSERT(lcfg && !IS_ERR(lcfg));
914 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
916 /* Commands that don't need a device */
917 switch(lcfg->lcfg_command) {
919 err = class_attach(lcfg);
922 case LCFG_ADD_UUID: {
923 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
924 " (%s)\n", lustre_cfg_string(lcfg, 1),
925 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
927 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
930 case LCFG_DEL_UUID: {
931 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
932 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
933 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
935 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
938 case LCFG_MOUNTOPT: {
939 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
940 lustre_cfg_string(lcfg, 1),
941 lustre_cfg_string(lcfg, 2),
942 lustre_cfg_string(lcfg, 3));
943 /* set these mount options somewhere, so ll_fill_super
945 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
946 lustre_cfg_string(lcfg, 1),
947 LUSTRE_CFG_BUFLEN(lcfg, 2),
948 lustre_cfg_string(lcfg, 2),
949 LUSTRE_CFG_BUFLEN(lcfg, 3),
950 lustre_cfg_string(lcfg, 3));
953 case LCFG_DEL_MOUNTOPT: {
954 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
955 lustre_cfg_string(lcfg, 1));
956 class_del_profile(lustre_cfg_string(lcfg, 1));
959 case LCFG_SET_TIMEOUT: {
960 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
961 obd_timeout, lcfg->lcfg_num);
962 obd_timeout = max(lcfg->lcfg_num, 1U);
965 case LCFG_SET_LDLM_TIMEOUT: {
966 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
967 ldlm_timeout, lcfg->lcfg_num);
968 ldlm_timeout = max(lcfg->lcfg_num, 1U);
969 if (ldlm_timeout >= obd_timeout)
970 ldlm_timeout = max(obd_timeout / 3, 1U);
974 case LCFG_SET_UPCALL: {
975 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
976 /* COMPAT_146 Don't fail on old configs */
980 struct cfg_marker *marker;
981 marker = lustre_cfg_buf(lcfg, 1);
982 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
983 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
988 /* llite has no obd */
989 if ((class_match_param(lustre_cfg_string(lcfg, 1),
990 PARAM_LLITE, 0) == 0) &&
991 client_process_config) {
992 err = (*client_process_config)(lcfg);
994 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
995 PARAM_SYS, &tmp) == 0)) {
996 /* Global param settings */
997 err = class_set_global(tmp, lcfg->lcfg_num);
998 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
999 unknown globals would cause config to fail */
1001 CWARN("Ignoring unknown param %s\n", tmp);
1010 /* Commands that require a device */
1011 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1013 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1014 CERROR("this lcfg command requires a device name\n");
1016 CERROR("no device for: %s\n",
1017 lustre_cfg_string(lcfg, 0));
1019 GOTO(out, err = -EINVAL);
1022 switch(lcfg->lcfg_command) {
1024 err = class_setup(obd, lcfg);
1028 err = class_detach(obd, lcfg);
1031 case LCFG_CLEANUP: {
1032 err = class_cleanup(obd, lcfg);
1035 case LCFG_ADD_CONN: {
1036 err = class_add_conn(obd, lcfg);
1039 case LCFG_DEL_CONN: {
1040 err = class_del_conn(obd, lcfg);
1043 case LCFG_POOL_NEW: {
1044 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1048 case LCFG_POOL_ADD: {
1049 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1050 lustre_cfg_string(lcfg, 3));
1054 case LCFG_POOL_REM: {
1055 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1056 lustre_cfg_string(lcfg, 3));
1060 case LCFG_POOL_DEL: {
1061 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1066 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1072 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1073 CWARN("Ignoring error %d on optional command %#x\n", err,
1074 lcfg->lcfg_command);
1080 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1081 struct lustre_cfg *lcfg, void *data)
1084 struct lprocfs_vars *var;
1086 int i, keylen, vallen;
1087 int matched = 0, j = 0;
1092 if (lcfg->lcfg_command != LCFG_PARAM) {
1093 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1097 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1098 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1099 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1100 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1101 key = lustre_cfg_buf(lcfg, i);
1102 /* Strip off prefix */
1103 class_match_param(key, prefix, &key);
1104 sval = strchr(key, '=');
1105 if (!sval || (*(sval + 1) == 0)) {
1106 CERROR("Can't parse param %s (missing '=')\n", key);
1107 /* rc = -EINVAL; continue parsing other params */
1110 keylen = sval - key;
1112 vallen = strlen(sval);
1115 /* Search proc entries */
1116 while (lvars[j].name) {
1118 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1119 keylen == strlen(var->name)) {
1122 if (var->write_fptr) {
1126 rc = (var->write_fptr)(NULL, sval,
1135 /* If the prefix doesn't match, return error so we
1136 can pass it down the stack */
1137 if (strnchr(key, keylen, '.'))
1139 CERROR("%s: unknown param %s\n",
1140 (char *)lustre_cfg_string(lcfg, 0), key);
1141 /* rc = -EINVAL; continue parsing other params */
1143 } else if (rc < 0) {
1144 CERROR("writing proc entry %s err %d\n",
1148 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1149 lustre_cfg_string(lcfg, 0),
1150 (int)strlen(prefix) - 1, prefix,
1151 (int)(sval - key - 1), key, sval);
1161 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1162 /* Don't throw config error */
1167 int class_config_dump_handler(struct llog_handle * handle,
1168 struct llog_rec_hdr *rec, void *data);
1171 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1173 #define lustre_check_exclusion(a,b) 0
1176 /** Parse a configuration llog, doing various manipulations on them
1177 * for various reasons, (modifications for compatibility, skip obsolete
1178 * records, change uuids, etc), then class_process_config() resulting
1181 static int class_config_llog_handler(struct llog_handle * handle,
1182 struct llog_rec_hdr *rec, void *data)
1184 struct config_llog_instance *clli = data;
1185 int cfg_len = rec->lrh_len;
1186 char *cfg_buf = (char*) (rec + 1);
1190 //class_config_dump_handler(handle, rec, data);
1192 switch (rec->lrh_type) {
1194 struct lustre_cfg *lcfg, *lcfg_new;
1195 struct lustre_cfg_bufs bufs;
1196 char *inst_name = NULL;
1198 int inst = 0, swab = 0;
1200 lcfg = (struct lustre_cfg *)cfg_buf;
1201 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1202 lustre_swab_lustre_cfg(lcfg);
1206 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1210 /* Figure out config state info */
1211 if (lcfg->lcfg_command == LCFG_MARKER) {
1212 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1213 lustre_swab_cfg_marker(marker, swab,
1214 LUSTRE_CFG_BUFLEN(lcfg, 1));
1215 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1216 clli->cfg_flags, marker->cm_flags);
1217 if (marker->cm_flags & CM_START) {
1218 /* all previous flags off */
1219 clli->cfg_flags = CFG_F_MARKER;
1220 if (marker->cm_flags & CM_SKIP) {
1221 clli->cfg_flags |= CFG_F_SKIP;
1222 CDEBUG(D_CONFIG, "SKIP #%d\n",
1224 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1226 lustre_check_exclusion(clli->cfg_sb,
1227 marker->cm_tgtname))) {
1228 clli->cfg_flags |= CFG_F_EXCLUDE;
1229 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1232 } else if (marker->cm_flags & CM_END) {
1233 clli->cfg_flags = 0;
1236 /* A config command without a start marker before it is
1237 illegal (post 146) */
1238 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1239 !(clli->cfg_flags & CFG_F_MARKER) &&
1240 (lcfg->lcfg_command != LCFG_MARKER)) {
1241 CWARN("Config not inside markers, ignoring! "
1242 "(inst: %p, uuid: %s, flags: %#x)\n",
1244 clli->cfg_uuid.uuid, clli->cfg_flags);
1245 clli->cfg_flags |= CFG_F_SKIP;
1247 if (clli->cfg_flags & CFG_F_SKIP) {
1248 CDEBUG(D_CONFIG, "skipping %#x\n",
1251 /* No processing! */
1256 * For interoperability between 1.8 and 2.0,
1257 * rename "mds" obd device type to "mdt".
1260 char *typename = lustre_cfg_string(lcfg, 1);
1261 char *index = lustre_cfg_string(lcfg, 2);
1263 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1264 strcmp(typename, "mds") == 0)) {
1265 CWARN("For 1.8 interoperability, rename obd "
1266 "type from mds to mdt\n");
1269 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1270 strcmp(index, "type") == 0)) {
1271 CDEBUG(D_INFO, "For 1.8 interoperability, "
1272 "set this index to '0'\n");
1278 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1279 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1280 /* Add inactive instead */
1281 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1283 lustre_cfg_bufs_init(&bufs, lcfg);
1285 if (clli && clli->cfg_instance &&
1286 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1288 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1289 sizeof(clli->cfg_instance) * 2 + 1;
1290 OBD_ALLOC(inst_name, inst_len);
1291 if (inst_name == NULL)
1292 GOTO(out, rc = -ENOMEM);
1293 sprintf(inst_name, "%s-%p",
1294 lustre_cfg_string(lcfg, 0),
1295 clli->cfg_instance);
1296 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1297 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1298 lcfg->lcfg_command, inst_name);
1301 /* we override the llog's uuid for clients, to insure they
1303 if (clli && clli->cfg_instance != NULL &&
1304 lcfg->lcfg_command == LCFG_ATTACH) {
1305 lustre_cfg_bufs_set_string(&bufs, 2,
1306 clli->cfg_uuid.uuid);
1309 * sptlrpc config record, we expect 2 data segments:
1310 * [0]: fs_name/target_name,
1312 * moving them to index [1] and [2], and insert MGC's
1313 * obdname at index [0].
1315 if (clli && clli->cfg_instance == NULL &&
1316 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1317 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1318 bufs.lcfg_buflen[1]);
1319 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1320 bufs.lcfg_buflen[0]);
1321 lustre_cfg_bufs_set_string(&bufs, 0,
1325 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1327 lcfg_new->lcfg_num = lcfg->lcfg_num;
1328 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1330 /* XXX Hack to try to remain binary compatible with
1331 * pre-newconfig logs */
1332 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1333 (lcfg->lcfg_nid >> 32) == 0) {
1334 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1336 lcfg_new->lcfg_nid =
1337 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1338 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1339 lcfg->lcfg_nal, addr,
1340 libcfs_nid2str(lcfg_new->lcfg_nid));
1342 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1345 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1347 rc = class_process_config(lcfg_new);
1348 lustre_cfg_free(lcfg_new);
1351 OBD_FREE(inst_name, inst_len);
1355 CERROR("Unknown llog record type %#x encountered\n",
1361 CERROR("Err %d on cfg command:\n", rc);
1362 class_config_dump_handler(handle, rec, data);
1367 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1368 struct config_llog_instance *cfg)
1370 struct llog_process_cat_data cd = {0, 0};
1371 struct llog_handle *llh;
1375 CDEBUG(D_INFO, "looking up llog %s\n", name);
1376 rc = llog_create(ctxt, &llh, NULL, name);
1380 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1382 GOTO(parse_out, rc);
1384 /* continue processing from where we last stopped to end-of-log */
1386 cd.lpcd_first_idx = cfg->cfg_last_idx;
1387 cd.lpcd_last_idx = 0;
1389 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1391 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1392 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1395 cfg->cfg_last_idx = cd.lpcd_last_idx;
1398 rc2 = llog_close(llh);
1405 int class_config_dump_handler(struct llog_handle * handle,
1406 struct llog_rec_hdr *rec, void *data)
1408 int cfg_len = rec->lrh_len;
1409 char *cfg_buf = (char*) (rec + 1);
1410 char *outstr, *ptr, *end;
1414 OBD_ALLOC(outstr, 256);
1420 if (rec->lrh_type == OBD_CFG_REC) {
1421 struct lustre_cfg *lcfg;
1424 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1427 lcfg = (struct lustre_cfg *)cfg_buf;
1429 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1430 lcfg->lcfg_command);
1431 if (lcfg->lcfg_flags) {
1432 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1435 if (lcfg->lcfg_num) {
1436 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1439 if (lcfg->lcfg_nid) {
1440 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1441 libcfs_nid2str(lcfg->lcfg_nid),
1444 if (lcfg->lcfg_command == LCFG_MARKER) {
1445 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1446 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1447 marker->cm_step, marker->cm_flags,
1448 marker->cm_tgtname, marker->cm_comment);
1450 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1451 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1452 lustre_cfg_string(lcfg, i));
1455 LCONSOLE(D_WARNING, " %s\n", outstr);
1457 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1461 OBD_FREE(outstr, 256);
1465 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1466 struct config_llog_instance *cfg)
1468 struct llog_handle *llh;
1472 LCONSOLE_INFO("Dumping config log %s\n", name);
1474 rc = llog_create(ctxt, &llh, NULL, name);
1478 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1480 GOTO(parse_out, rc);
1482 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1484 rc2 = llog_close(llh);
1488 LCONSOLE_INFO("End config log %s\n", name);
1493 /** Call class_cleanup and class_detach.
1494 * "Manual" only in the sense that we're faking lcfg commands.
1496 int class_manual_cleanup(struct obd_device *obd)
1499 struct lustre_cfg *lcfg;
1500 struct lustre_cfg_bufs bufs;
1505 CERROR("empty cleanup\n");
1514 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1515 obd->obd_name, flags);
1517 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1518 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1519 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1523 rc = class_process_config(lcfg);
1525 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1529 /* the lcfg is almost the same for both ops */
1530 lcfg->lcfg_command = LCFG_DETACH;
1531 rc = class_process_config(lcfg);
1533 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1535 lustre_cfg_free(lcfg);
1540 * uuid<->export lustre hash operations
1544 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1546 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1547 sizeof(((struct obd_uuid *)key)->uuid), mask);
1551 uuid_key(cfs_hlist_node_t *hnode)
1553 struct obd_export *exp;
1555 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1557 return &exp->exp_client_uuid;
1561 * NOTE: It is impossible to find an export that is in failed
1562 * state with this function
1565 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1567 struct obd_export *exp;
1570 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1572 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1577 uuid_export_object(cfs_hlist_node_t *hnode)
1579 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1583 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1585 struct obd_export *exp;
1587 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1588 class_export_get(exp);
1592 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1594 struct obd_export *exp;
1596 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1597 class_export_put(exp);
1600 static cfs_hash_ops_t uuid_hash_ops = {
1601 .hs_hash = uuid_hash,
1603 .hs_keycmp = uuid_keycmp,
1604 .hs_object = uuid_export_object,
1605 .hs_get = uuid_export_get,
1606 .hs_put_locked = uuid_export_put_locked,
1611 * nid<->export hash operations
1615 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1617 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1621 nid_key(cfs_hlist_node_t *hnode)
1623 struct obd_export *exp;
1625 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1627 RETURN(&exp->exp_connection->c_peer.nid);
1631 * NOTE: It is impossible to find an export that is in failed
1632 * state with this function
1635 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1637 struct obd_export *exp;
1640 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1642 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1647 nid_export_object(cfs_hlist_node_t *hnode)
1649 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1653 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1655 struct obd_export *exp;
1657 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1658 class_export_get(exp);
1662 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1664 struct obd_export *exp;
1666 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1667 class_export_put(exp);
1670 static cfs_hash_ops_t nid_hash_ops = {
1671 .hs_hash = nid_hash,
1673 .hs_keycmp = nid_kepcmp,
1674 .hs_object = nid_export_object,
1675 .hs_get = nid_export_get,
1676 .hs_put_locked = nid_export_put_locked,
1681 * nid<->nidstats hash operations
1685 nidstats_key(cfs_hlist_node_t *hnode)
1687 struct nid_stat *ns;
1689 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1695 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1697 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1701 nidstats_object(cfs_hlist_node_t *hnode)
1703 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1707 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1709 struct nid_stat *ns;
1711 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1716 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1718 struct nid_stat *ns;
1720 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1724 static cfs_hash_ops_t nid_stat_hash_ops = {
1725 .hs_hash = nid_hash,
1726 .hs_key = nidstats_key,
1727 .hs_keycmp = nidstats_keycmp,
1728 .hs_object = nidstats_object,
1729 .hs_get = nidstats_get,
1730 .hs_put_locked = nidstats_put_locked,