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 /* Precleanup, we must make sure all exports get destroyed. */
619 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
621 CERROR("Precleanup %s returned %d\n",
624 /* destroy an uuid-export hash body */
625 if (obd->obd_uuid_hash) {
626 cfs_hash_putref(obd->obd_uuid_hash);
627 obd->obd_uuid_hash = NULL;
630 /* destroy a nid-export hash body */
631 if (obd->obd_nid_hash) {
632 cfs_hash_putref(obd->obd_nid_hash);
633 obd->obd_nid_hash = NULL;
636 /* destroy a nid-stats hash body */
637 if (obd->obd_nid_stats_hash) {
638 cfs_hash_putref(obd->obd_nid_stats_hash);
639 obd->obd_nid_stats_hash = NULL;
642 class_decref(obd, "setup", obd);
648 struct obd_device *class_incref(struct obd_device *obd,
649 const char *scope, const void *source)
651 lu_ref_add_atomic(&obd->obd_reference, scope, source);
652 cfs_atomic_inc(&obd->obd_refcount);
653 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
654 cfs_atomic_read(&obd->obd_refcount));
659 void class_decref(struct obd_device *obd, const char *scope, const void *source)
664 cfs_spin_lock(&obd->obd_dev_lock);
665 cfs_atomic_dec(&obd->obd_refcount);
666 refs = cfs_atomic_read(&obd->obd_refcount);
667 cfs_spin_unlock(&obd->obd_dev_lock);
668 lu_ref_del(&obd->obd_reference, scope, source);
670 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
672 if ((refs == 1) && obd->obd_stopping) {
673 /* All exports have been destroyed; there should
674 be no more in-progress ops by this point.*/
676 cfs_spin_lock(&obd->obd_self_export->exp_lock);
677 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
678 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
680 /* note that we'll recurse into class_decref again */
681 class_unlink_export(obd->obd_self_export);
686 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
687 obd->obd_name, obd->obd_uuid.uuid);
688 LASSERT(!obd->obd_attached);
689 if (obd->obd_stopping) {
690 /* If we're not stopping, we were never set up */
691 err = obd_cleanup(obd);
693 CERROR("Cleanup %s returned %d\n",
696 if (OBP(obd, detach)) {
697 err = OBP(obd, detach)(obd);
699 CERROR("Detach returned %d\n", err);
701 class_release_dev(obd);
705 /** Add a failover nid location.
706 * Client obd types contact server obd types using this nid list.
708 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
710 struct obd_import *imp;
711 struct obd_uuid uuid;
715 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
716 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
717 CERROR("invalid conn_uuid\n");
720 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
721 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
722 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
723 CERROR("can't add connection on non-client dev\n");
727 imp = obd->u.cli.cl_import;
729 CERROR("try to add conn on immature client dev\n");
733 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
734 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
739 /** Remove a failover nid location.
741 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
743 struct obd_import *imp;
744 struct obd_uuid uuid;
748 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
749 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
750 CERROR("invalid conn_uuid\n");
753 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
754 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
755 CERROR("can't del connection on non-client dev\n");
759 imp = obd->u.cli.cl_import;
761 CERROR("try to del conn on immature client dev\n");
765 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
766 rc = obd_del_conn(imp, &uuid);
771 CFS_LIST_HEAD(lustre_profile_list);
773 struct lustre_profile *class_get_profile(const char * prof)
775 struct lustre_profile *lprof;
778 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
779 if (!strcmp(lprof->lp_profile, prof)) {
786 /** Create a named "profile".
787 * This defines the mdc and osc names to use for a client.
788 * This also is used to define the lov to be used by a mdt.
790 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
791 int mdclen, char *mdc)
793 struct lustre_profile *lprof;
797 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
799 OBD_ALLOC(lprof, sizeof(*lprof));
802 CFS_INIT_LIST_HEAD(&lprof->lp_list);
804 LASSERT(proflen == (strlen(prof) + 1));
805 OBD_ALLOC(lprof->lp_profile, proflen);
806 if (lprof->lp_profile == NULL)
807 GOTO(out, err = -ENOMEM);
808 memcpy(lprof->lp_profile, prof, proflen);
810 LASSERT(osclen == (strlen(osc) + 1));
811 OBD_ALLOC(lprof->lp_dt, osclen);
812 if (lprof->lp_dt == NULL)
813 GOTO(out, err = -ENOMEM);
814 memcpy(lprof->lp_dt, osc, osclen);
817 LASSERT(mdclen == (strlen(mdc) + 1));
818 OBD_ALLOC(lprof->lp_md, mdclen);
819 if (lprof->lp_md == NULL)
820 GOTO(out, err = -ENOMEM);
821 memcpy(lprof->lp_md, mdc, mdclen);
824 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
829 OBD_FREE(lprof->lp_md, mdclen);
831 OBD_FREE(lprof->lp_dt, osclen);
832 if (lprof->lp_profile)
833 OBD_FREE(lprof->lp_profile, proflen);
834 OBD_FREE(lprof, sizeof(*lprof));
838 void class_del_profile(const char *prof)
840 struct lustre_profile *lprof;
843 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
845 lprof = class_get_profile(prof);
847 cfs_list_del(&lprof->lp_list);
848 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
849 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
851 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
852 OBD_FREE(lprof, sizeof *lprof);
858 void class_del_profiles(void)
860 struct lustre_profile *lprof, *n;
863 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
864 cfs_list_del(&lprof->lp_list);
865 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
866 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
868 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
869 OBD_FREE(lprof, sizeof *lprof);
874 static int class_set_global(char *ptr, int val) {
877 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
879 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
881 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
883 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
884 at_early_margin = val;
885 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
890 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
896 /* We can't call ll_process_config directly because it lives in a module that
897 must be loaded after this one. */
898 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
900 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
902 client_process_config = cpc;
904 EXPORT_SYMBOL(lustre_register_client_process_config);
906 /** Process configuration commands given in lustre_cfg form.
907 * These may come from direct calls (e.g. class_manual_cleanup)
908 * or processing the config llog, or ioctl from lctl.
910 int class_process_config(struct lustre_cfg *lcfg)
912 struct obd_device *obd;
915 LASSERT(lcfg && !IS_ERR(lcfg));
916 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
918 /* Commands that don't need a device */
919 switch(lcfg->lcfg_command) {
921 err = class_attach(lcfg);
924 case LCFG_ADD_UUID: {
925 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
926 " (%s)\n", lustre_cfg_string(lcfg, 1),
927 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
929 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
932 case LCFG_DEL_UUID: {
933 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
934 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
935 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
937 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
940 case LCFG_MOUNTOPT: {
941 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
942 lustre_cfg_string(lcfg, 1),
943 lustre_cfg_string(lcfg, 2),
944 lustre_cfg_string(lcfg, 3));
945 /* set these mount options somewhere, so ll_fill_super
947 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
948 lustre_cfg_string(lcfg, 1),
949 LUSTRE_CFG_BUFLEN(lcfg, 2),
950 lustre_cfg_string(lcfg, 2),
951 LUSTRE_CFG_BUFLEN(lcfg, 3),
952 lustre_cfg_string(lcfg, 3));
955 case LCFG_DEL_MOUNTOPT: {
956 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
957 lustre_cfg_string(lcfg, 1));
958 class_del_profile(lustre_cfg_string(lcfg, 1));
961 case LCFG_SET_TIMEOUT: {
962 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
963 obd_timeout, lcfg->lcfg_num);
964 obd_timeout = max(lcfg->lcfg_num, 1U);
967 case LCFG_SET_LDLM_TIMEOUT: {
968 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
969 ldlm_timeout, lcfg->lcfg_num);
970 ldlm_timeout = max(lcfg->lcfg_num, 1U);
971 if (ldlm_timeout >= obd_timeout)
972 ldlm_timeout = max(obd_timeout / 3, 1U);
976 case LCFG_SET_UPCALL: {
977 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
978 /* COMPAT_146 Don't fail on old configs */
982 struct cfg_marker *marker;
983 marker = lustre_cfg_buf(lcfg, 1);
984 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
985 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
990 /* llite has no obd */
991 if ((class_match_param(lustre_cfg_string(lcfg, 1),
992 PARAM_LLITE, 0) == 0) &&
993 client_process_config) {
994 err = (*client_process_config)(lcfg);
996 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
997 PARAM_SYS, &tmp) == 0)) {
998 /* Global param settings */
999 err = class_set_global(tmp, lcfg->lcfg_num);
1000 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
1001 unknown globals would cause config to fail */
1003 CWARN("Ignoring unknown param %s\n", tmp);
1012 /* Commands that require a device */
1013 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1015 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1016 CERROR("this lcfg command requires a device name\n");
1018 CERROR("no device for: %s\n",
1019 lustre_cfg_string(lcfg, 0));
1021 GOTO(out, err = -EINVAL);
1024 switch(lcfg->lcfg_command) {
1026 err = class_setup(obd, lcfg);
1030 err = class_detach(obd, lcfg);
1033 case LCFG_CLEANUP: {
1034 err = class_cleanup(obd, lcfg);
1037 case LCFG_ADD_CONN: {
1038 err = class_add_conn(obd, lcfg);
1041 case LCFG_DEL_CONN: {
1042 err = class_del_conn(obd, lcfg);
1045 case LCFG_POOL_NEW: {
1046 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1050 case LCFG_POOL_ADD: {
1051 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1052 lustre_cfg_string(lcfg, 3));
1056 case LCFG_POOL_REM: {
1057 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1058 lustre_cfg_string(lcfg, 3));
1062 case LCFG_POOL_DEL: {
1063 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1068 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1074 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1075 CWARN("Ignoring error %d on optional command %#x\n", err,
1076 lcfg->lcfg_command);
1082 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1083 struct lustre_cfg *lcfg, void *data)
1086 struct lprocfs_vars *var;
1088 int i, keylen, vallen;
1089 int matched = 0, j = 0;
1094 if (lcfg->lcfg_command != LCFG_PARAM) {
1095 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1099 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1100 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1101 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1102 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1103 key = lustre_cfg_buf(lcfg, i);
1104 /* Strip off prefix */
1105 class_match_param(key, prefix, &key);
1106 sval = strchr(key, '=');
1107 if (!sval || (*(sval + 1) == 0)) {
1108 CERROR("Can't parse param %s (missing '=')\n", key);
1109 /* rc = -EINVAL; continue parsing other params */
1112 keylen = sval - key;
1114 vallen = strlen(sval);
1117 /* Search proc entries */
1118 while (lvars[j].name) {
1120 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1121 keylen == strlen(var->name)) {
1124 if (var->write_fptr) {
1128 rc = (var->write_fptr)(NULL, sval,
1137 /* If the prefix doesn't match, return error so we
1138 can pass it down the stack */
1139 if (strnchr(key, keylen, '.'))
1141 CERROR("%s: unknown param %s\n",
1142 (char *)lustre_cfg_string(lcfg, 0), key);
1143 /* rc = -EINVAL; continue parsing other params */
1145 } else if (rc < 0) {
1146 CERROR("writing proc entry %s err %d\n",
1150 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1151 lustre_cfg_string(lcfg, 0),
1152 (int)strlen(prefix) - 1, prefix,
1153 (int)(sval - key - 1), key, sval);
1163 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1164 /* Don't throw config error */
1169 int class_config_dump_handler(struct llog_handle * handle,
1170 struct llog_rec_hdr *rec, void *data);
1173 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1175 #define lustre_check_exclusion(a,b) 0
1178 /** Parse a configuration llog, doing various manipulations on them
1179 * for various reasons, (modifications for compatibility, skip obsolete
1180 * records, change uuids, etc), then class_process_config() resulting
1183 static int class_config_llog_handler(struct llog_handle * handle,
1184 struct llog_rec_hdr *rec, void *data)
1186 struct config_llog_instance *clli = data;
1187 int cfg_len = rec->lrh_len;
1188 char *cfg_buf = (char*) (rec + 1);
1192 //class_config_dump_handler(handle, rec, data);
1194 switch (rec->lrh_type) {
1196 struct lustre_cfg *lcfg, *lcfg_new;
1197 struct lustre_cfg_bufs bufs;
1198 char *inst_name = NULL;
1200 int inst = 0, swab = 0;
1202 lcfg = (struct lustre_cfg *)cfg_buf;
1203 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1204 lustre_swab_lustre_cfg(lcfg);
1208 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1212 /* Figure out config state info */
1213 if (lcfg->lcfg_command == LCFG_MARKER) {
1214 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1215 lustre_swab_cfg_marker(marker, swab,
1216 LUSTRE_CFG_BUFLEN(lcfg, 1));
1217 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1218 clli->cfg_flags, marker->cm_flags);
1219 if (marker->cm_flags & CM_START) {
1220 /* all previous flags off */
1221 clli->cfg_flags = CFG_F_MARKER;
1222 if (marker->cm_flags & CM_SKIP) {
1223 clli->cfg_flags |= CFG_F_SKIP;
1224 CDEBUG(D_CONFIG, "SKIP #%d\n",
1226 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1228 lustre_check_exclusion(clli->cfg_sb,
1229 marker->cm_tgtname))) {
1230 clli->cfg_flags |= CFG_F_EXCLUDE;
1231 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1234 } else if (marker->cm_flags & CM_END) {
1235 clli->cfg_flags = 0;
1238 /* A config command without a start marker before it is
1239 illegal (post 146) */
1240 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1241 !(clli->cfg_flags & CFG_F_MARKER) &&
1242 (lcfg->lcfg_command != LCFG_MARKER)) {
1243 CWARN("Config not inside markers, ignoring! "
1244 "(inst: %p, uuid: %s, flags: %#x)\n",
1246 clli->cfg_uuid.uuid, clli->cfg_flags);
1247 clli->cfg_flags |= CFG_F_SKIP;
1249 if (clli->cfg_flags & CFG_F_SKIP) {
1250 CDEBUG(D_CONFIG, "skipping %#x\n",
1253 /* No processing! */
1258 * For interoperability between 1.8 and 2.0,
1259 * rename "mds" obd device type to "mdt".
1262 char *typename = lustre_cfg_string(lcfg, 1);
1263 char *index = lustre_cfg_string(lcfg, 2);
1265 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1266 strcmp(typename, "mds") == 0)) {
1267 CWARN("For 1.8 interoperability, rename obd "
1268 "type from mds to mdt\n");
1271 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1272 strcmp(index, "type") == 0)) {
1273 CDEBUG(D_INFO, "For 1.8 interoperability, "
1274 "set this index to '0'\n");
1280 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1281 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1282 /* Add inactive instead */
1283 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1285 lustre_cfg_bufs_init(&bufs, lcfg);
1287 if (clli && clli->cfg_instance &&
1288 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1290 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1291 sizeof(clli->cfg_instance) * 2 + 4;
1292 OBD_ALLOC(inst_name, inst_len);
1293 if (inst_name == NULL)
1294 GOTO(out, rc = -ENOMEM);
1295 sprintf(inst_name, "%s-%p",
1296 lustre_cfg_string(lcfg, 0),
1297 clli->cfg_instance);
1298 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1299 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1300 lcfg->lcfg_command, inst_name);
1303 /* we override the llog's uuid for clients, to insure they
1305 if (clli && clli->cfg_instance != NULL &&
1306 lcfg->lcfg_command == LCFG_ATTACH) {
1307 lustre_cfg_bufs_set_string(&bufs, 2,
1308 clli->cfg_uuid.uuid);
1311 * sptlrpc config record, we expect 2 data segments:
1312 * [0]: fs_name/target_name,
1314 * moving them to index [1] and [2], and insert MGC's
1315 * obdname at index [0].
1317 if (clli && clli->cfg_instance == NULL &&
1318 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1319 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1320 bufs.lcfg_buflen[1]);
1321 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1322 bufs.lcfg_buflen[0]);
1323 lustre_cfg_bufs_set_string(&bufs, 0,
1327 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1329 lcfg_new->lcfg_num = lcfg->lcfg_num;
1330 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1332 /* XXX Hack to try to remain binary compatible with
1333 * pre-newconfig logs */
1334 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1335 (lcfg->lcfg_nid >> 32) == 0) {
1336 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1338 lcfg_new->lcfg_nid =
1339 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1340 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1341 lcfg->lcfg_nal, addr,
1342 libcfs_nid2str(lcfg_new->lcfg_nid));
1344 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1347 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1349 rc = class_process_config(lcfg_new);
1350 lustre_cfg_free(lcfg_new);
1353 OBD_FREE(inst_name, inst_len);
1357 CERROR("Unknown llog record type %#x encountered\n",
1363 CERROR("Err %d on cfg command:\n", rc);
1364 class_config_dump_handler(handle, rec, data);
1369 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1370 struct config_llog_instance *cfg)
1372 struct llog_process_cat_data cd = {0, 0};
1373 struct llog_handle *llh;
1377 CDEBUG(D_INFO, "looking up llog %s\n", name);
1378 rc = llog_create(ctxt, &llh, NULL, name);
1382 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1384 GOTO(parse_out, rc);
1386 /* continue processing from where we last stopped to end-of-log */
1388 cd.lpcd_first_idx = cfg->cfg_last_idx;
1389 cd.lpcd_last_idx = 0;
1391 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1393 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1394 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1397 cfg->cfg_last_idx = cd.lpcd_last_idx;
1400 rc2 = llog_close(llh);
1407 int class_config_dump_handler(struct llog_handle * handle,
1408 struct llog_rec_hdr *rec, void *data)
1410 int cfg_len = rec->lrh_len;
1411 char *cfg_buf = (char*) (rec + 1);
1412 char *outstr, *ptr, *end;
1416 OBD_ALLOC(outstr, 256);
1422 if (rec->lrh_type == OBD_CFG_REC) {
1423 struct lustre_cfg *lcfg;
1426 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1429 lcfg = (struct lustre_cfg *)cfg_buf;
1431 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1432 lcfg->lcfg_command);
1433 if (lcfg->lcfg_flags) {
1434 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1437 if (lcfg->lcfg_num) {
1438 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1441 if (lcfg->lcfg_nid) {
1442 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1443 libcfs_nid2str(lcfg->lcfg_nid),
1446 if (lcfg->lcfg_command == LCFG_MARKER) {
1447 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1448 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1449 marker->cm_step, marker->cm_flags,
1450 marker->cm_tgtname, marker->cm_comment);
1452 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1453 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1454 lustre_cfg_string(lcfg, i));
1457 LCONSOLE(D_WARNING, " %s\n", outstr);
1459 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1463 OBD_FREE(outstr, 256);
1467 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1468 struct config_llog_instance *cfg)
1470 struct llog_handle *llh;
1474 LCONSOLE_INFO("Dumping config log %s\n", name);
1476 rc = llog_create(ctxt, &llh, NULL, name);
1480 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1482 GOTO(parse_out, rc);
1484 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1486 rc2 = llog_close(llh);
1490 LCONSOLE_INFO("End config log %s\n", name);
1495 /** Call class_cleanup and class_detach.
1496 * "Manual" only in the sense that we're faking lcfg commands.
1498 int class_manual_cleanup(struct obd_device *obd)
1501 struct lustre_cfg *lcfg;
1502 struct lustre_cfg_bufs bufs;
1507 CERROR("empty cleanup\n");
1516 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1517 obd->obd_name, flags);
1519 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1520 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1521 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1525 rc = class_process_config(lcfg);
1527 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1531 /* the lcfg is almost the same for both ops */
1532 lcfg->lcfg_command = LCFG_DETACH;
1533 rc = class_process_config(lcfg);
1535 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1537 lustre_cfg_free(lcfg);
1542 * uuid<->export lustre hash operations
1546 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1548 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1549 sizeof(((struct obd_uuid *)key)->uuid), mask);
1553 uuid_key(cfs_hlist_node_t *hnode)
1555 struct obd_export *exp;
1557 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1559 return &exp->exp_client_uuid;
1563 * NOTE: It is impossible to find an export that is in failed
1564 * state with this function
1567 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1569 struct obd_export *exp;
1572 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1574 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1579 uuid_export_object(cfs_hlist_node_t *hnode)
1581 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1585 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1587 struct obd_export *exp;
1589 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1590 class_export_get(exp);
1594 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1596 struct obd_export *exp;
1598 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1599 class_export_put(exp);
1602 static cfs_hash_ops_t uuid_hash_ops = {
1603 .hs_hash = uuid_hash,
1605 .hs_keycmp = uuid_keycmp,
1606 .hs_object = uuid_export_object,
1607 .hs_get = uuid_export_get,
1608 .hs_put_locked = uuid_export_put_locked,
1613 * nid<->export hash operations
1617 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1619 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1623 nid_key(cfs_hlist_node_t *hnode)
1625 struct obd_export *exp;
1627 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1629 RETURN(&exp->exp_connection->c_peer.nid);
1633 * NOTE: It is impossible to find an export that is in failed
1634 * state with this function
1637 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1639 struct obd_export *exp;
1642 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1644 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1649 nid_export_object(cfs_hlist_node_t *hnode)
1651 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1655 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1657 struct obd_export *exp;
1659 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1660 class_export_get(exp);
1664 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1666 struct obd_export *exp;
1668 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1669 class_export_put(exp);
1672 static cfs_hash_ops_t nid_hash_ops = {
1673 .hs_hash = nid_hash,
1675 .hs_keycmp = nid_kepcmp,
1676 .hs_object = nid_export_object,
1677 .hs_get = nid_export_get,
1678 .hs_put_locked = nid_export_put_locked,
1683 * nid<->nidstats hash operations
1687 nidstats_key(cfs_hlist_node_t *hnode)
1689 struct nid_stat *ns;
1691 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1697 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1699 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1703 nidstats_object(cfs_hlist_node_t *hnode)
1705 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1709 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1711 struct nid_stat *ns;
1713 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1718 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1720 struct nid_stat *ns;
1722 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1726 static cfs_hash_ops_t nid_stat_hash_ops = {
1727 .hs_hash = nid_hash,
1728 .hs_key = nidstats_key,
1729 .hs_keycmp = nidstats_keycmp,
1730 .hs_object = nidstats_object,
1731 .hs_get = nidstats_get,
1732 .hs_put_locked = nidstats_put_locked,