4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/obd_config.c
41 #define DEBUG_SUBSYSTEM S_CLASS
43 #include <obd_class.h>
44 #include <linux/string.h>
46 #include <liblustre.h>
47 #include <obd_class.h>
50 #include <lustre_log.h>
51 #include <lprocfs_status.h>
52 #include <libcfs/list.h>
53 #include <lustre_param.h>
55 static cfs_hash_ops_t uuid_hash_ops;
56 static cfs_hash_ops_t nid_hash_ops;
57 static cfs_hash_ops_t nid_stat_hash_ops;
59 /*********** string parsing utils *********/
61 /* returns 0 if we find this key in the buffer, else 1 */
62 int class_find_param(char *buf, char *key, char **valp)
69 if ((ptr = strstr(buf, key)) == NULL)
73 *valp = ptr + strlen(key);
79 * Finds a parameter in \a params and copies it to \a copy.
81 * Leading spaces are skipped. Next space or end of string is the
82 * parameter terminator with the exception that spaces inside single or double
83 * quotes get included into a parameter. The parameter is copied into \a copy
84 * which has to be allocated big enough by a caller, quotes are stripped in
85 * the copy and the copy is terminated by 0.
87 * On return \a params is set to next parameter or to NULL if last
88 * parameter is returned.
90 * \retval 0 if parameter is returned in \a copy
92 * \retval -EINVAL if unbalanced quota is found
94 int class_get_next_param(char **params, char *copy)
109 q1 = strpbrk(str, " '\"");
112 memcpy(copy, str, len);
119 memcpy(copy, str, len);
125 memcpy(copy, str, len);
128 /* search for the matching closing quote */
130 q2 = strchr(str, *q1);
132 CERROR("Unbalanced quota in parameters: \"%s\"\n",
137 memcpy(copy, str, len);
144 /* returns 0 if this is the first key in the buffer, else 1.
145 valp points to first char after key. */
146 int class_match_param(char *buf, char *key, char **valp)
151 if (memcmp(buf, key, strlen(key)) != 0)
155 *valp = buf + strlen(key);
160 static int parse_nid(char *buf, void *value)
162 lnet_nid_t *nid = (lnet_nid_t *)value;
164 *nid = libcfs_str2nid(buf);
165 if (*nid != LNET_NID_ANY)
168 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
172 static int parse_net(char *buf, void *value)
174 __u32 *net = (__u32 *)value;
176 *net = libcfs_str2net(buf);
177 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
189 endh is set to next separator */
190 static int class_parse_value(char *buf, int opc, void *value, char **endh)
198 while (*buf == ',' || *buf == ':')
200 if (*buf == ' ' || *buf == '/' || *buf == '\0')
203 /* nid separators or end of nids */
204 endp = strpbrk(buf, ",: /");
206 endp = buf + strlen(buf);
213 case CLASS_PARSE_NID:
214 rc = parse_nid(buf, value);
216 case CLASS_PARSE_NET:
217 rc = parse_net(buf, value);
228 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
230 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh);
233 int class_parse_net(char *buf, __u32 *net, char **endh)
235 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh);
238 /* 1 param contains key and match
239 * 0 param contains key and not match
240 * -1 param does not contain key
242 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
247 while (class_find_param(buf, key, &buf) == 0) {
248 /* please restrict to the nids pertaining to
249 * the specified nids */
250 while (class_parse_nid(buf, &tmp, &buf) == 0) {
259 int class_match_net(char *buf, char *key, __u32 net)
264 while (class_find_param(buf, key, &buf) == 0) {
265 /* please restrict to the nids pertaining to
266 * the specified networks */
267 while (class_parse_net(buf, &tmp, &buf) == 0) {
276 EXPORT_SYMBOL(class_find_param);
277 EXPORT_SYMBOL(class_get_next_param);
278 EXPORT_SYMBOL(class_match_param);
279 EXPORT_SYMBOL(class_parse_nid);
280 EXPORT_SYMBOL(class_parse_net);
281 EXPORT_SYMBOL(class_match_nid);
282 EXPORT_SYMBOL(class_match_net);
284 /********************** class fns **********************/
287 * Create a new obd device and set the type, name and uuid. If successful,
288 * the new device can be accessed by either name or uuid.
290 int class_attach(struct lustre_cfg *lcfg)
292 struct obd_device *obd = NULL;
293 char *typename, *name, *uuid;
297 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
298 CERROR("No type passed!\n");
301 typename = lustre_cfg_string(lcfg, 1);
303 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
304 CERROR("No name passed!\n");
307 name = lustre_cfg_string(lcfg, 0);
309 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
310 CERROR("No UUID passed!\n");
313 uuid = lustre_cfg_string(lcfg, 2);
315 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
316 MKSTR(typename), MKSTR(name), MKSTR(uuid));
318 obd = class_newdev(typename, name);
320 /* Already exists or out of obds */
323 CERROR("Cannot create device %s of type %s : %d\n",
327 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
329 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
330 "obd %p obd_magic %08X != %08X\n",
331 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
332 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
333 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
335 cfs_rwlock_init(&obd->obd_pool_lock);
336 obd->obd_pool_limit = 0;
337 obd->obd_pool_slv = 0;
339 CFS_INIT_LIST_HEAD(&obd->obd_exports);
340 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
341 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
342 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
343 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
344 cfs_spin_lock_init(&obd->obd_nid_lock);
345 cfs_spin_lock_init(&obd->obd_dev_lock);
346 cfs_mutex_init(&obd->obd_dev_mutex);
347 cfs_spin_lock_init(&obd->obd_osfs_lock);
348 /* obd->obd_osfs_age must be set to a value in the distant
349 * past to guarantee a fresh statfs is fetched on mount. */
350 obd->obd_osfs_age = cfs_time_shift_64(-1000);
352 /* XXX belongs in setup not attach */
353 cfs_init_rwsem(&obd->obd_observer_link_sem);
355 cfs_init_timer(&obd->obd_recovery_timer);
356 cfs_spin_lock_init(&obd->obd_recovery_task_lock);
357 cfs_waitq_init(&obd->obd_next_transno_waitq);
358 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
359 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
360 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
361 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
362 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
364 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
367 if (len >= sizeof(obd->obd_uuid)) {
368 CERROR("uuid must be < %d bytes long\n",
369 (int)sizeof(obd->obd_uuid));
370 GOTO(out, rc = -EINVAL);
372 memcpy(obd->obd_uuid.uuid, uuid, len);
375 if (OBP(obd, attach)) {
376 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
378 GOTO(out, rc = -EINVAL);
381 /* Detach drops this */
382 cfs_spin_lock(&obd->obd_dev_lock);
383 cfs_atomic_set(&obd->obd_refcount, 1);
384 cfs_spin_unlock(&obd->obd_dev_lock);
385 lu_ref_init(&obd->obd_reference);
386 lu_ref_add(&obd->obd_reference, "attach", obd);
388 obd->obd_attached = 1;
389 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
390 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
394 class_release_dev(obd);
399 /** Create hashes, self-export, and call type-specific setup.
400 * Setup is effectively the "start this obd" call.
402 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
405 struct obd_export *exp;
408 LASSERT(obd != NULL);
409 LASSERTF(obd == class_num2obd(obd->obd_minor),
410 "obd %p != obd_devs[%d] %p\n",
411 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
412 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
413 "obd %p obd_magic %08x != %08x\n",
414 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
416 /* have we attached a type to this device? */
417 if (!obd->obd_attached) {
418 CERROR("Device %d not attached\n", obd->obd_minor);
422 if (obd->obd_set_up) {
423 CERROR("Device %d already setup (type %s)\n",
424 obd->obd_minor, obd->obd_type->typ_name);
428 /* is someone else setting us up right now? (attach inits spinlock) */
429 cfs_spin_lock(&obd->obd_dev_lock);
430 if (obd->obd_starting) {
431 cfs_spin_unlock(&obd->obd_dev_lock);
432 CERROR("Device %d setup in progress (type %s)\n",
433 obd->obd_minor, obd->obd_type->typ_name);
436 /* just leave this on forever. I can't use obd_set_up here because
437 other fns check that status, and we're not actually set up yet. */
438 obd->obd_starting = 1;
439 obd->obd_uuid_hash = NULL;
440 obd->obd_nid_hash = NULL;
441 obd->obd_nid_stats_hash = NULL;
442 cfs_spin_unlock(&obd->obd_dev_lock);
444 /* create an uuid-export lustre hash */
445 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
448 HASH_UUID_BKT_BITS, 0,
451 &uuid_hash_ops, CFS_HASH_DEFAULT);
452 if (!obd->obd_uuid_hash)
453 GOTO(err_hash, err = -ENOMEM);
455 /* create a nid-export lustre hash */
456 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
459 HASH_NID_BKT_BITS, 0,
462 &nid_hash_ops, CFS_HASH_DEFAULT);
463 if (!obd->obd_nid_hash)
464 GOTO(err_hash, err = -ENOMEM);
466 /* create a nid-stats lustre hash */
467 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
468 HASH_NID_STATS_CUR_BITS,
469 HASH_NID_STATS_MAX_BITS,
470 HASH_NID_STATS_BKT_BITS, 0,
473 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
474 if (!obd->obd_nid_stats_hash)
475 GOTO(err_hash, err = -ENOMEM);
477 exp = class_new_export(obd, &obd->obd_uuid);
479 GOTO(err_hash, err = PTR_ERR(exp));
481 obd->obd_self_export = exp;
482 cfs_list_del_init(&exp->exp_obd_chain_timed);
483 class_export_put(exp);
485 err = obd_setup(obd, lcfg);
491 cfs_spin_lock(&obd->obd_dev_lock);
492 /* cleanup drops this */
493 class_incref(obd, "setup", obd);
494 cfs_spin_unlock(&obd->obd_dev_lock);
496 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
497 obd->obd_name, obd->obd_uuid.uuid);
501 if (obd->obd_self_export) {
502 class_unlink_export(obd->obd_self_export);
503 obd->obd_self_export = NULL;
506 if (obd->obd_uuid_hash) {
507 cfs_hash_putref(obd->obd_uuid_hash);
508 obd->obd_uuid_hash = NULL;
510 if (obd->obd_nid_hash) {
511 cfs_hash_putref(obd->obd_nid_hash);
512 obd->obd_nid_hash = NULL;
514 if (obd->obd_nid_stats_hash) {
515 cfs_hash_putref(obd->obd_nid_stats_hash);
516 obd->obd_nid_stats_hash = NULL;
518 obd->obd_starting = 0;
519 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
523 /** We have finished using this obd and are ready to destroy it.
524 * There can be no more references to this obd.
526 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
530 if (obd->obd_set_up) {
531 CERROR("OBD device %d still set up\n", obd->obd_minor);
535 cfs_spin_lock(&obd->obd_dev_lock);
536 if (!obd->obd_attached) {
537 cfs_spin_unlock(&obd->obd_dev_lock);
538 CERROR("OBD device %d not attached\n", obd->obd_minor);
541 obd->obd_attached = 0;
542 cfs_spin_unlock(&obd->obd_dev_lock);
544 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
545 obd->obd_name, obd->obd_uuid.uuid);
547 class_decref(obd, "attach", obd);
551 /** Start shutting down the obd. There may be in-progess ops when
552 * this is called. We tell them to start shutting down with a call
553 * to class_disconnect_exports().
555 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
561 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
563 if (!obd->obd_set_up) {
564 CERROR("Device %d not setup\n", obd->obd_minor);
568 cfs_spin_lock(&obd->obd_dev_lock);
569 if (obd->obd_stopping) {
570 cfs_spin_unlock(&obd->obd_dev_lock);
571 CERROR("OBD %d already stopping\n", obd->obd_minor);
574 /* Leave this on forever */
575 obd->obd_stopping = 1;
576 cfs_spin_unlock(&obd->obd_dev_lock);
578 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
579 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
585 LCONSOLE_WARN("Failing over %s\n",
588 obd->obd_no_transno = 1;
589 obd->obd_no_recov = 1;
590 if (OBP(obd, iocontrol)) {
591 obd_iocontrol(OBD_IOC_SYNC,
592 obd->obd_self_export,
597 CERROR("Unrecognised flag '%c'\n", *flag);
601 LASSERT(obd->obd_self_export);
603 /* The three references that should be remaining are the
604 * obd_self_export and the attach and setup references. */
605 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
606 /* refcounf - 3 might be the number of real exports
607 (excluding self export). But class_incref is called
608 by other things as well, so don't count on it. */
609 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
610 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
611 dump_exports(obd, 0);
612 class_disconnect_exports(obd);
615 /* Precleanup, we must make sure all exports get destroyed. */
616 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
618 CERROR("Precleanup %s returned %d\n",
621 /* destroy an uuid-export hash body */
622 if (obd->obd_uuid_hash) {
623 cfs_hash_putref(obd->obd_uuid_hash);
624 obd->obd_uuid_hash = NULL;
627 /* destroy a nid-export hash body */
628 if (obd->obd_nid_hash) {
629 cfs_hash_putref(obd->obd_nid_hash);
630 obd->obd_nid_hash = NULL;
633 /* destroy a nid-stats hash body */
634 if (obd->obd_nid_stats_hash) {
635 cfs_hash_putref(obd->obd_nid_stats_hash);
636 obd->obd_nid_stats_hash = NULL;
639 class_decref(obd, "setup", obd);
645 struct obd_device *class_incref(struct obd_device *obd,
646 const char *scope, const void *source)
648 lu_ref_add_atomic(&obd->obd_reference, scope, source);
649 cfs_atomic_inc(&obd->obd_refcount);
650 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
651 cfs_atomic_read(&obd->obd_refcount));
656 void class_decref(struct obd_device *obd, const char *scope, const void *source)
661 cfs_spin_lock(&obd->obd_dev_lock);
662 cfs_atomic_dec(&obd->obd_refcount);
663 refs = cfs_atomic_read(&obd->obd_refcount);
664 cfs_spin_unlock(&obd->obd_dev_lock);
665 lu_ref_del(&obd->obd_reference, scope, source);
667 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
669 if ((refs == 1) && obd->obd_stopping) {
670 /* All exports have been destroyed; there should
671 be no more in-progress ops by this point.*/
673 cfs_spin_lock(&obd->obd_self_export->exp_lock);
674 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
675 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
677 /* note that we'll recurse into class_decref again */
678 class_unlink_export(obd->obd_self_export);
683 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
684 obd->obd_name, obd->obd_uuid.uuid);
685 LASSERT(!obd->obd_attached);
686 if (obd->obd_stopping) {
687 /* If we're not stopping, we were never set up */
688 err = obd_cleanup(obd);
690 CERROR("Cleanup %s returned %d\n",
693 if (OBP(obd, detach)) {
694 err = OBP(obd, detach)(obd);
696 CERROR("Detach returned %d\n", err);
698 class_release_dev(obd);
702 /** Add a failover nid location.
703 * Client obd types contact server obd types using this nid list.
705 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
707 struct obd_import *imp;
708 struct obd_uuid uuid;
712 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
713 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
714 CERROR("invalid conn_uuid\n");
717 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
718 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
719 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
720 CERROR("can't add connection on non-client dev\n");
724 imp = obd->u.cli.cl_import;
726 CERROR("try to add conn on immature client dev\n");
730 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
731 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
736 /** Remove a failover nid location.
738 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
740 struct obd_import *imp;
741 struct obd_uuid uuid;
745 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
746 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
747 CERROR("invalid conn_uuid\n");
750 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
751 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
752 CERROR("can't del connection on non-client dev\n");
756 imp = obd->u.cli.cl_import;
758 CERROR("try to del conn on immature client dev\n");
762 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
763 rc = obd_del_conn(imp, &uuid);
768 CFS_LIST_HEAD(lustre_profile_list);
770 struct lustre_profile *class_get_profile(const char * prof)
772 struct lustre_profile *lprof;
775 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
776 if (!strcmp(lprof->lp_profile, prof)) {
783 /** Create a named "profile".
784 * This defines the mdc and osc names to use for a client.
785 * This also is used to define the lov to be used by a mdt.
787 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
788 int mdclen, char *mdc)
790 struct lustre_profile *lprof;
794 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
796 OBD_ALLOC(lprof, sizeof(*lprof));
799 CFS_INIT_LIST_HEAD(&lprof->lp_list);
801 LASSERT(proflen == (strlen(prof) + 1));
802 OBD_ALLOC(lprof->lp_profile, proflen);
803 if (lprof->lp_profile == NULL)
804 GOTO(out, err = -ENOMEM);
805 memcpy(lprof->lp_profile, prof, proflen);
807 LASSERT(osclen == (strlen(osc) + 1));
808 OBD_ALLOC(lprof->lp_dt, osclen);
809 if (lprof->lp_dt == NULL)
810 GOTO(out, err = -ENOMEM);
811 memcpy(lprof->lp_dt, osc, osclen);
814 LASSERT(mdclen == (strlen(mdc) + 1));
815 OBD_ALLOC(lprof->lp_md, mdclen);
816 if (lprof->lp_md == NULL)
817 GOTO(out, err = -ENOMEM);
818 memcpy(lprof->lp_md, mdc, mdclen);
821 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
826 OBD_FREE(lprof->lp_md, mdclen);
828 OBD_FREE(lprof->lp_dt, osclen);
829 if (lprof->lp_profile)
830 OBD_FREE(lprof->lp_profile, proflen);
831 OBD_FREE(lprof, sizeof(*lprof));
835 void class_del_profile(const char *prof)
837 struct lustre_profile *lprof;
840 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
842 lprof = class_get_profile(prof);
844 cfs_list_del(&lprof->lp_list);
845 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
846 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
848 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
849 OBD_FREE(lprof, sizeof *lprof);
855 void class_del_profiles(void)
857 struct lustre_profile *lprof, *n;
860 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
861 cfs_list_del(&lprof->lp_list);
862 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
863 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
865 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
866 OBD_FREE(lprof, sizeof *lprof);
871 static int class_set_global(char *ptr, int val) {
874 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
876 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
878 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
880 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
881 at_early_margin = val;
882 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
887 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
893 /* We can't call ll_process_config directly because it lives in a module that
894 must be loaded after this one. */
895 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
897 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
899 client_process_config = cpc;
901 EXPORT_SYMBOL(lustre_register_client_process_config);
903 /** Process configuration commands given in lustre_cfg form.
904 * These may come from direct calls (e.g. class_manual_cleanup)
905 * or processing the config llog, or ioctl from lctl.
907 int class_process_config(struct lustre_cfg *lcfg)
909 struct obd_device *obd;
912 LASSERT(lcfg && !IS_ERR(lcfg));
913 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
915 /* Commands that don't need a device */
916 switch(lcfg->lcfg_command) {
918 err = class_attach(lcfg);
921 case LCFG_ADD_UUID: {
922 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
923 " (%s)\n", lustre_cfg_string(lcfg, 1),
924 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
926 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
929 case LCFG_DEL_UUID: {
930 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
931 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
932 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
934 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
937 case LCFG_MOUNTOPT: {
938 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
939 lustre_cfg_string(lcfg, 1),
940 lustre_cfg_string(lcfg, 2),
941 lustre_cfg_string(lcfg, 3));
942 /* set these mount options somewhere, so ll_fill_super
944 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
945 lustre_cfg_string(lcfg, 1),
946 LUSTRE_CFG_BUFLEN(lcfg, 2),
947 lustre_cfg_string(lcfg, 2),
948 LUSTRE_CFG_BUFLEN(lcfg, 3),
949 lustre_cfg_string(lcfg, 3));
952 case LCFG_DEL_MOUNTOPT: {
953 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
954 lustre_cfg_string(lcfg, 1));
955 class_del_profile(lustre_cfg_string(lcfg, 1));
958 case LCFG_SET_TIMEOUT: {
959 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
960 obd_timeout, lcfg->lcfg_num);
961 obd_timeout = max(lcfg->lcfg_num, 1U);
964 case LCFG_SET_LDLM_TIMEOUT: {
965 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
966 ldlm_timeout, lcfg->lcfg_num);
967 ldlm_timeout = max(lcfg->lcfg_num, 1U);
968 if (ldlm_timeout >= obd_timeout)
969 ldlm_timeout = max(obd_timeout / 3, 1U);
973 case LCFG_SET_UPCALL: {
974 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
975 /* COMPAT_146 Don't fail on old configs */
979 struct cfg_marker *marker;
980 marker = lustre_cfg_buf(lcfg, 1);
981 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
982 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
987 /* llite has no obd */
988 if ((class_match_param(lustre_cfg_string(lcfg, 1),
989 PARAM_LLITE, 0) == 0) &&
990 client_process_config) {
991 err = (*client_process_config)(lcfg);
993 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
994 PARAM_SYS, &tmp) == 0)) {
995 /* Global param settings */
996 err = class_set_global(tmp, lcfg->lcfg_num);
997 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
998 unknown globals would cause config to fail */
1000 CWARN("Ignoring unknown param %s\n", tmp);
1009 /* Commands that require a device */
1010 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1012 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1013 CERROR("this lcfg command requires a device name\n");
1015 CERROR("no device for: %s\n",
1016 lustre_cfg_string(lcfg, 0));
1018 GOTO(out, err = -EINVAL);
1021 switch(lcfg->lcfg_command) {
1023 err = class_setup(obd, lcfg);
1027 err = class_detach(obd, lcfg);
1030 case LCFG_CLEANUP: {
1031 err = class_cleanup(obd, lcfg);
1034 case LCFG_ADD_CONN: {
1035 err = class_add_conn(obd, lcfg);
1038 case LCFG_DEL_CONN: {
1039 err = class_del_conn(obd, lcfg);
1042 case LCFG_POOL_NEW: {
1043 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1047 case LCFG_POOL_ADD: {
1048 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1049 lustre_cfg_string(lcfg, 3));
1053 case LCFG_POOL_REM: {
1054 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1055 lustre_cfg_string(lcfg, 3));
1059 case LCFG_POOL_DEL: {
1060 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1065 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1071 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1072 CWARN("Ignoring error %d on optional command %#x\n", err,
1073 lcfg->lcfg_command);
1079 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1080 struct lustre_cfg *lcfg, void *data)
1083 struct lprocfs_vars *var;
1085 int i, keylen, vallen;
1086 int matched = 0, j = 0;
1091 if (lcfg->lcfg_command != LCFG_PARAM) {
1092 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1096 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1097 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1098 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1099 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1100 key = lustre_cfg_buf(lcfg, i);
1101 /* Strip off prefix */
1102 class_match_param(key, prefix, &key);
1103 sval = strchr(key, '=');
1104 if (!sval || (*(sval + 1) == 0)) {
1105 CERROR("Can't parse param %s (missing '=')\n", key);
1106 /* rc = -EINVAL; continue parsing other params */
1109 keylen = sval - key;
1111 vallen = strlen(sval);
1114 /* Search proc entries */
1115 while (lvars[j].name) {
1117 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1118 keylen == strlen(var->name)) {
1121 if (var->write_fptr) {
1125 rc = (var->write_fptr)(NULL, sval,
1134 /* If the prefix doesn't match, return error so we
1135 can pass it down the stack */
1136 if (strnchr(key, keylen, '.'))
1138 CERROR("%s: unknown param %s\n",
1139 (char *)lustre_cfg_string(lcfg, 0), key);
1140 /* rc = -EINVAL; continue parsing other params */
1142 } else if (rc < 0) {
1143 CERROR("writing proc entry %s err %d\n",
1147 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1148 lustre_cfg_string(lcfg, 0),
1149 (int)strlen(prefix) - 1, prefix,
1150 (int)(sval - key - 1), key, sval);
1160 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1161 /* Don't throw config error */
1166 int class_config_dump_handler(struct llog_handle * handle,
1167 struct llog_rec_hdr *rec, void *data);
1170 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1172 #define lustre_check_exclusion(a,b) 0
1175 /** Parse a configuration llog, doing various manipulations on them
1176 * for various reasons, (modifications for compatibility, skip obsolete
1177 * records, change uuids, etc), then class_process_config() resulting
1180 static int class_config_llog_handler(struct llog_handle * handle,
1181 struct llog_rec_hdr *rec, void *data)
1183 struct config_llog_instance *clli = data;
1184 int cfg_len = rec->lrh_len;
1185 char *cfg_buf = (char*) (rec + 1);
1189 //class_config_dump_handler(handle, rec, data);
1191 switch (rec->lrh_type) {
1193 struct lustre_cfg *lcfg, *lcfg_new;
1194 struct lustre_cfg_bufs bufs;
1195 char *inst_name = NULL;
1197 int inst = 0, swab = 0;
1199 lcfg = (struct lustre_cfg *)cfg_buf;
1200 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1201 lustre_swab_lustre_cfg(lcfg);
1205 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1209 /* Figure out config state info */
1210 if (lcfg->lcfg_command == LCFG_MARKER) {
1211 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1212 lustre_swab_cfg_marker(marker, swab,
1213 LUSTRE_CFG_BUFLEN(lcfg, 1));
1214 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1215 clli->cfg_flags, marker->cm_flags);
1216 if (marker->cm_flags & CM_START) {
1217 /* all previous flags off */
1218 clli->cfg_flags = CFG_F_MARKER;
1219 if (marker->cm_flags & CM_SKIP) {
1220 clli->cfg_flags |= CFG_F_SKIP;
1221 CDEBUG(D_CONFIG, "SKIP #%d\n",
1223 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1225 lustre_check_exclusion(clli->cfg_sb,
1226 marker->cm_tgtname))) {
1227 clli->cfg_flags |= CFG_F_EXCLUDE;
1228 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1231 } else if (marker->cm_flags & CM_END) {
1232 clli->cfg_flags = 0;
1235 /* A config command without a start marker before it is
1236 illegal (post 146) */
1237 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1238 !(clli->cfg_flags & CFG_F_MARKER) &&
1239 (lcfg->lcfg_command != LCFG_MARKER)) {
1240 CWARN("Config not inside markers, ignoring! "
1241 "(inst: %p, uuid: %s, flags: %#x)\n",
1243 clli->cfg_uuid.uuid, clli->cfg_flags);
1244 clli->cfg_flags |= CFG_F_SKIP;
1246 if (clli->cfg_flags & CFG_F_SKIP) {
1247 CDEBUG(D_CONFIG, "skipping %#x\n",
1250 /* No processing! */
1255 * For interoperability between 1.8 and 2.0,
1256 * rename "mds" obd device type to "mdt".
1259 char *typename = lustre_cfg_string(lcfg, 1);
1260 char *index = lustre_cfg_string(lcfg, 2);
1262 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1263 strcmp(typename, "mds") == 0)) {
1264 CWARN("For 1.8 interoperability, rename obd "
1265 "type from mds to mdt\n");
1268 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1269 strcmp(index, "type") == 0)) {
1270 CDEBUG(D_INFO, "For 1.8 interoperability, "
1271 "set this index to '0'\n");
1277 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1278 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1279 /* Add inactive instead */
1280 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1282 lustre_cfg_bufs_init(&bufs, lcfg);
1284 if (clli && clli->cfg_instance &&
1285 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1287 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1288 sizeof(clli->cfg_instance) * 2 + 4;
1289 OBD_ALLOC(inst_name, inst_len);
1290 if (inst_name == NULL)
1291 GOTO(out, rc = -ENOMEM);
1292 sprintf(inst_name, "%s-%p",
1293 lustre_cfg_string(lcfg, 0),
1294 clli->cfg_instance);
1295 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1296 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1297 lcfg->lcfg_command, inst_name);
1300 /* we override the llog's uuid for clients, to insure they
1302 if (clli && clli->cfg_instance != NULL &&
1303 lcfg->lcfg_command == LCFG_ATTACH) {
1304 lustre_cfg_bufs_set_string(&bufs, 2,
1305 clli->cfg_uuid.uuid);
1308 * sptlrpc config record, we expect 2 data segments:
1309 * [0]: fs_name/target_name,
1311 * moving them to index [1] and [2], and insert MGC's
1312 * obdname at index [0].
1314 if (clli && clli->cfg_instance == NULL &&
1315 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1316 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1317 bufs.lcfg_buflen[1]);
1318 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1319 bufs.lcfg_buflen[0]);
1320 lustre_cfg_bufs_set_string(&bufs, 0,
1324 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1326 lcfg_new->lcfg_num = lcfg->lcfg_num;
1327 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1329 /* XXX Hack to try to remain binary compatible with
1330 * pre-newconfig logs */
1331 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1332 (lcfg->lcfg_nid >> 32) == 0) {
1333 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1335 lcfg_new->lcfg_nid =
1336 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1337 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1338 lcfg->lcfg_nal, addr,
1339 libcfs_nid2str(lcfg_new->lcfg_nid));
1341 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1344 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1346 rc = class_process_config(lcfg_new);
1347 lustre_cfg_free(lcfg_new);
1350 OBD_FREE(inst_name, inst_len);
1354 CERROR("Unknown llog record type %#x encountered\n",
1360 CERROR("Err %d on cfg command:\n", rc);
1361 class_config_dump_handler(handle, rec, data);
1366 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1367 struct config_llog_instance *cfg)
1369 struct llog_process_cat_data cd = {0, 0};
1370 struct llog_handle *llh;
1374 CDEBUG(D_INFO, "looking up llog %s\n", name);
1375 rc = llog_create(ctxt, &llh, NULL, name);
1379 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1381 GOTO(parse_out, rc);
1383 /* continue processing from where we last stopped to end-of-log */
1385 cd.lpcd_first_idx = cfg->cfg_last_idx;
1386 cd.lpcd_last_idx = 0;
1388 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1390 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1391 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1394 cfg->cfg_last_idx = cd.lpcd_last_idx;
1397 rc2 = llog_close(llh);
1404 int class_config_dump_handler(struct llog_handle * handle,
1405 struct llog_rec_hdr *rec, void *data)
1407 int cfg_len = rec->lrh_len;
1408 char *cfg_buf = (char*) (rec + 1);
1409 char *outstr, *ptr, *end;
1413 OBD_ALLOC(outstr, 256);
1419 if (rec->lrh_type == OBD_CFG_REC) {
1420 struct lustre_cfg *lcfg;
1423 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1426 lcfg = (struct lustre_cfg *)cfg_buf;
1428 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1429 lcfg->lcfg_command);
1430 if (lcfg->lcfg_flags) {
1431 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1434 if (lcfg->lcfg_num) {
1435 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1438 if (lcfg->lcfg_nid) {
1439 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1440 libcfs_nid2str(lcfg->lcfg_nid),
1443 if (lcfg->lcfg_command == LCFG_MARKER) {
1444 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1445 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1446 marker->cm_step, marker->cm_flags,
1447 marker->cm_tgtname, marker->cm_comment);
1449 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1450 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1451 lustre_cfg_string(lcfg, i));
1454 LCONSOLE(D_WARNING, " %s\n", outstr);
1456 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1460 OBD_FREE(outstr, 256);
1464 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1465 struct config_llog_instance *cfg)
1467 struct llog_handle *llh;
1471 LCONSOLE_INFO("Dumping config log %s\n", name);
1473 rc = llog_create(ctxt, &llh, NULL, name);
1477 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1479 GOTO(parse_out, rc);
1481 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1483 rc2 = llog_close(llh);
1487 LCONSOLE_INFO("End config log %s\n", name);
1492 /** Call class_cleanup and class_detach.
1493 * "Manual" only in the sense that we're faking lcfg commands.
1495 int class_manual_cleanup(struct obd_device *obd)
1498 struct lustre_cfg *lcfg;
1499 struct lustre_cfg_bufs bufs;
1504 CERROR("empty cleanup\n");
1513 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1514 obd->obd_name, flags);
1516 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1517 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1518 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1522 rc = class_process_config(lcfg);
1524 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1528 /* the lcfg is almost the same for both ops */
1529 lcfg->lcfg_command = LCFG_DETACH;
1530 rc = class_process_config(lcfg);
1532 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1534 lustre_cfg_free(lcfg);
1539 * uuid<->export lustre hash operations
1543 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1545 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1546 sizeof(((struct obd_uuid *)key)->uuid), mask);
1550 uuid_key(cfs_hlist_node_t *hnode)
1552 struct obd_export *exp;
1554 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1556 return &exp->exp_client_uuid;
1560 * NOTE: It is impossible to find an export that is in failed
1561 * state with this function
1564 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1566 struct obd_export *exp;
1569 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1571 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1576 uuid_export_object(cfs_hlist_node_t *hnode)
1578 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1582 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1584 struct obd_export *exp;
1586 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1587 class_export_get(exp);
1591 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1593 struct obd_export *exp;
1595 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1596 class_export_put(exp);
1599 static cfs_hash_ops_t uuid_hash_ops = {
1600 .hs_hash = uuid_hash,
1602 .hs_keycmp = uuid_keycmp,
1603 .hs_object = uuid_export_object,
1604 .hs_get = uuid_export_get,
1605 .hs_put_locked = uuid_export_put_locked,
1610 * nid<->export hash operations
1614 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1616 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1620 nid_key(cfs_hlist_node_t *hnode)
1622 struct obd_export *exp;
1624 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1626 RETURN(&exp->exp_connection->c_peer.nid);
1630 * NOTE: It is impossible to find an export that is in failed
1631 * state with this function
1634 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1636 struct obd_export *exp;
1639 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1641 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1646 nid_export_object(cfs_hlist_node_t *hnode)
1648 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1652 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1654 struct obd_export *exp;
1656 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1657 class_export_get(exp);
1661 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1663 struct obd_export *exp;
1665 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1666 class_export_put(exp);
1669 static cfs_hash_ops_t nid_hash_ops = {
1670 .hs_hash = nid_hash,
1672 .hs_keycmp = nid_kepcmp,
1673 .hs_object = nid_export_object,
1674 .hs_get = nid_export_get,
1675 .hs_put_locked = nid_export_put_locked,
1680 * nid<->nidstats hash operations
1684 nidstats_key(cfs_hlist_node_t *hnode)
1686 struct nid_stat *ns;
1688 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1694 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1696 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1700 nidstats_object(cfs_hlist_node_t *hnode)
1702 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1706 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1708 struct nid_stat *ns;
1710 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1715 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1717 struct nid_stat *ns;
1719 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1723 static cfs_hash_ops_t nid_stat_hash_ops = {
1724 .hs_hash = nid_hash,
1725 .hs_key = nidstats_key,
1726 .hs_keycmp = nidstats_keycmp,
1727 .hs_object = nidstats_object,
1728 .hs_get = nidstats_get,
1729 .hs_put_locked = nidstats_put_locked,