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.
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_sema_init(&obd->obd_dev_sem, 1);
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 /* destroy an uuid-export hash body */
616 if (obd->obd_uuid_hash) {
617 cfs_hash_putref(obd->obd_uuid_hash);
618 obd->obd_uuid_hash = NULL;
621 /* destroy a nid-export hash body */
622 if (obd->obd_nid_hash) {
623 cfs_hash_putref(obd->obd_nid_hash);
624 obd->obd_nid_hash = NULL;
627 /* destroy a nid-stats hash body */
628 if (obd->obd_nid_stats_hash) {
629 cfs_hash_putref(obd->obd_nid_stats_hash);
630 obd->obd_nid_stats_hash = NULL;
633 /* Precleanup, we must make sure all exports get destroyed. */
634 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
636 CERROR("Precleanup %s returned %d\n",
638 class_decref(obd, "setup", obd);
643 struct obd_device *class_incref(struct obd_device *obd,
644 const char *scope, const void *source)
646 lu_ref_add_atomic(&obd->obd_reference, scope, source);
647 cfs_atomic_inc(&obd->obd_refcount);
648 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
649 cfs_atomic_read(&obd->obd_refcount));
654 void class_decref(struct obd_device *obd, const char *scope, const void *source)
659 cfs_spin_lock(&obd->obd_dev_lock);
660 cfs_atomic_dec(&obd->obd_refcount);
661 refs = cfs_atomic_read(&obd->obd_refcount);
662 cfs_spin_unlock(&obd->obd_dev_lock);
663 lu_ref_del(&obd->obd_reference, scope, source);
665 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
667 if ((refs == 1) && obd->obd_stopping) {
668 /* All exports have been destroyed; there should
669 be no more in-progress ops by this point.*/
671 cfs_spin_lock(&obd->obd_self_export->exp_lock);
672 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
673 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
675 /* note that we'll recurse into class_decref again */
676 class_unlink_export(obd->obd_self_export);
681 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
682 obd->obd_name, obd->obd_uuid.uuid);
683 LASSERT(!obd->obd_attached);
684 if (obd->obd_stopping) {
685 /* If we're not stopping, we were never set up */
686 err = obd_cleanup(obd);
688 CERROR("Cleanup %s returned %d\n",
691 if (OBP(obd, detach)) {
692 err = OBP(obd, detach)(obd);
694 CERROR("Detach returned %d\n", err);
696 class_release_dev(obd);
700 /** Add a failover nid location.
701 * Client obd types contact server obd types using this nid list.
703 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
705 struct obd_import *imp;
706 struct obd_uuid uuid;
710 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
711 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
712 CERROR("invalid conn_uuid\n");
715 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
716 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
717 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
718 CERROR("can't add connection on non-client dev\n");
722 imp = obd->u.cli.cl_import;
724 CERROR("try to add conn on immature client dev\n");
728 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
729 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
734 /** Remove a failover nid location.
736 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
738 struct obd_import *imp;
739 struct obd_uuid uuid;
743 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
744 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
745 CERROR("invalid conn_uuid\n");
748 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
749 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
750 CERROR("can't del connection on non-client dev\n");
754 imp = obd->u.cli.cl_import;
756 CERROR("try to del conn on immature client dev\n");
760 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
761 rc = obd_del_conn(imp, &uuid);
766 CFS_LIST_HEAD(lustre_profile_list);
768 struct lustre_profile *class_get_profile(const char * prof)
770 struct lustre_profile *lprof;
773 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
774 if (!strcmp(lprof->lp_profile, prof)) {
781 /** Create a named "profile".
782 * This defines the mdc and osc names to use for a client.
783 * This also is used to define the lov to be used by a mdt.
785 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
786 int mdclen, char *mdc)
788 struct lustre_profile *lprof;
792 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
794 OBD_ALLOC(lprof, sizeof(*lprof));
797 CFS_INIT_LIST_HEAD(&lprof->lp_list);
799 LASSERT(proflen == (strlen(prof) + 1));
800 OBD_ALLOC(lprof->lp_profile, proflen);
801 if (lprof->lp_profile == NULL)
802 GOTO(out, err = -ENOMEM);
803 memcpy(lprof->lp_profile, prof, proflen);
805 LASSERT(osclen == (strlen(osc) + 1));
806 OBD_ALLOC(lprof->lp_dt, osclen);
807 if (lprof->lp_dt == NULL)
808 GOTO(out, err = -ENOMEM);
809 memcpy(lprof->lp_dt, osc, osclen);
812 LASSERT(mdclen == (strlen(mdc) + 1));
813 OBD_ALLOC(lprof->lp_md, mdclen);
814 if (lprof->lp_md == NULL)
815 GOTO(out, err = -ENOMEM);
816 memcpy(lprof->lp_md, mdc, mdclen);
819 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
824 OBD_FREE(lprof->lp_md, mdclen);
826 OBD_FREE(lprof->lp_dt, osclen);
827 if (lprof->lp_profile)
828 OBD_FREE(lprof->lp_profile, proflen);
829 OBD_FREE(lprof, sizeof(*lprof));
833 void class_del_profile(const char *prof)
835 struct lustre_profile *lprof;
838 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
840 lprof = class_get_profile(prof);
842 cfs_list_del(&lprof->lp_list);
843 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
844 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
846 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
847 OBD_FREE(lprof, sizeof *lprof);
853 void class_del_profiles(void)
855 struct lustre_profile *lprof, *n;
858 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
859 cfs_list_del(&lprof->lp_list);
860 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
861 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
863 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
864 OBD_FREE(lprof, sizeof *lprof);
869 static int class_set_global(char *ptr, int val) {
872 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
874 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
876 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
878 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
879 at_early_margin = val;
880 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
885 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
891 /* We can't call ll_process_config directly because it lives in a module that
892 must be loaded after this one. */
893 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
895 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
897 client_process_config = cpc;
899 EXPORT_SYMBOL(lustre_register_client_process_config);
901 /** Process configuration commands given in lustre_cfg form.
902 * These may come from direct calls (e.g. class_manual_cleanup)
903 * or processing the config llog, or ioctl from lctl.
905 int class_process_config(struct lustre_cfg *lcfg)
907 struct obd_device *obd;
910 LASSERT(lcfg && !IS_ERR(lcfg));
911 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
913 /* Commands that don't need a device */
914 switch(lcfg->lcfg_command) {
916 err = class_attach(lcfg);
919 case LCFG_ADD_UUID: {
920 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
921 " (%s)\n", lustre_cfg_string(lcfg, 1),
922 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
924 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
927 case LCFG_DEL_UUID: {
928 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
929 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
930 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
932 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
935 case LCFG_MOUNTOPT: {
936 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
937 lustre_cfg_string(lcfg, 1),
938 lustre_cfg_string(lcfg, 2),
939 lustre_cfg_string(lcfg, 3));
940 /* set these mount options somewhere, so ll_fill_super
942 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
943 lustre_cfg_string(lcfg, 1),
944 LUSTRE_CFG_BUFLEN(lcfg, 2),
945 lustre_cfg_string(lcfg, 2),
946 LUSTRE_CFG_BUFLEN(lcfg, 3),
947 lustre_cfg_string(lcfg, 3));
950 case LCFG_DEL_MOUNTOPT: {
951 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
952 lustre_cfg_string(lcfg, 1));
953 class_del_profile(lustre_cfg_string(lcfg, 1));
956 case LCFG_SET_TIMEOUT: {
957 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
958 obd_timeout, lcfg->lcfg_num);
959 obd_timeout = max(lcfg->lcfg_num, 1U);
962 case LCFG_SET_LDLM_TIMEOUT: {
963 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
964 ldlm_timeout, lcfg->lcfg_num);
965 ldlm_timeout = max(lcfg->lcfg_num, 1U);
966 if (ldlm_timeout >= obd_timeout)
967 ldlm_timeout = max(obd_timeout / 3, 1U);
971 case LCFG_SET_UPCALL: {
972 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
973 /* COMPAT_146 Don't fail on old configs */
977 struct cfg_marker *marker;
978 marker = lustre_cfg_buf(lcfg, 1);
979 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
980 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
985 /* llite has no obd */
986 if ((class_match_param(lustre_cfg_string(lcfg, 1),
987 PARAM_LLITE, 0) == 0) &&
988 client_process_config) {
989 err = (*client_process_config)(lcfg);
991 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
992 PARAM_SYS, &tmp) == 0)) {
993 /* Global param settings */
994 err = class_set_global(tmp, lcfg->lcfg_num);
995 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
996 unknown globals would cause config to fail */
998 CWARN("Ignoring unknown param %s\n", tmp);
1007 /* Commands that require a device */
1008 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1010 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1011 CERROR("this lcfg command requires a device name\n");
1013 CERROR("no device for: %s\n",
1014 lustre_cfg_string(lcfg, 0));
1016 GOTO(out, err = -EINVAL);
1019 switch(lcfg->lcfg_command) {
1021 err = class_setup(obd, lcfg);
1025 err = class_detach(obd, lcfg);
1028 case LCFG_CLEANUP: {
1029 err = class_cleanup(obd, lcfg);
1032 case LCFG_ADD_CONN: {
1033 err = class_add_conn(obd, lcfg);
1036 case LCFG_DEL_CONN: {
1037 err = class_del_conn(obd, lcfg);
1040 case LCFG_POOL_NEW: {
1041 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1045 case LCFG_POOL_ADD: {
1046 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1047 lustre_cfg_string(lcfg, 3));
1051 case LCFG_POOL_REM: {
1052 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1053 lustre_cfg_string(lcfg, 3));
1057 case LCFG_POOL_DEL: {
1058 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1063 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1069 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1070 CWARN("Ignoring error %d on optional command %#x\n", err,
1071 lcfg->lcfg_command);
1077 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1078 struct lustre_cfg *lcfg, void *data)
1081 struct lprocfs_vars *var;
1083 int i, keylen, vallen;
1084 int matched = 0, j = 0;
1089 if (lcfg->lcfg_command != LCFG_PARAM) {
1090 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1094 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1095 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1096 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1097 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1098 key = lustre_cfg_buf(lcfg, i);
1099 /* Strip off prefix */
1100 class_match_param(key, prefix, &key);
1101 sval = strchr(key, '=');
1102 if (!sval || (*(sval + 1) == 0)) {
1103 CERROR("Can't parse param %s (missing '=')\n", key);
1104 /* rc = -EINVAL; continue parsing other params */
1107 keylen = sval - key;
1109 vallen = strlen(sval);
1112 /* Search proc entries */
1113 while (lvars[j].name) {
1115 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1116 keylen == strlen(var->name)) {
1119 if (var->write_fptr) {
1123 rc = (var->write_fptr)(NULL, sval,
1132 /* If the prefix doesn't match, return error so we
1133 can pass it down the stack */
1134 if (strnchr(key, keylen, '.'))
1136 CERROR("%s: unknown param %s\n",
1137 (char *)lustre_cfg_string(lcfg, 0), key);
1138 /* rc = -EINVAL; continue parsing other params */
1140 } else if (rc < 0) {
1141 CERROR("writing proc entry %s err %d\n",
1145 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1146 lustre_cfg_string(lcfg, 0),
1147 (int)strlen(prefix) - 1, prefix,
1148 (int)(sval - key - 1), key, sval);
1158 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1159 /* Don't throw config error */
1164 int class_config_dump_handler(struct llog_handle * handle,
1165 struct llog_rec_hdr *rec, void *data);
1168 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1170 #define lustre_check_exclusion(a,b) 0
1173 /** Parse a configuration llog, doing various manipulations on them
1174 * for various reasons, (modifications for compatibility, skip obsolete
1175 * records, change uuids, etc), then class_process_config() resulting
1178 static int class_config_llog_handler(struct llog_handle * handle,
1179 struct llog_rec_hdr *rec, void *data)
1181 struct config_llog_instance *clli = data;
1182 int cfg_len = rec->lrh_len;
1183 char *cfg_buf = (char*) (rec + 1);
1187 //class_config_dump_handler(handle, rec, data);
1189 switch (rec->lrh_type) {
1191 struct lustre_cfg *lcfg, *lcfg_new;
1192 struct lustre_cfg_bufs bufs;
1193 char *inst_name = NULL;
1195 int inst = 0, swab = 0;
1197 lcfg = (struct lustre_cfg *)cfg_buf;
1198 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1199 lustre_swab_lustre_cfg(lcfg);
1203 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1207 /* Figure out config state info */
1208 if (lcfg->lcfg_command == LCFG_MARKER) {
1209 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1210 lustre_swab_cfg_marker(marker, swab,
1211 LUSTRE_CFG_BUFLEN(lcfg, 1));
1212 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1213 clli->cfg_flags, marker->cm_flags);
1214 if (marker->cm_flags & CM_START) {
1215 /* all previous flags off */
1216 clli->cfg_flags = CFG_F_MARKER;
1217 if (marker->cm_flags & CM_SKIP) {
1218 clli->cfg_flags |= CFG_F_SKIP;
1219 CDEBUG(D_CONFIG, "SKIP #%d\n",
1221 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1223 lustre_check_exclusion(clli->cfg_sb,
1224 marker->cm_tgtname))) {
1225 clli->cfg_flags |= CFG_F_EXCLUDE;
1226 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1229 } else if (marker->cm_flags & CM_END) {
1230 clli->cfg_flags = 0;
1233 /* A config command without a start marker before it is
1234 illegal (post 146) */
1235 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1236 !(clli->cfg_flags & CFG_F_MARKER) &&
1237 (lcfg->lcfg_command != LCFG_MARKER)) {
1238 CWARN("Config not inside markers, ignoring! "
1239 "(inst: %p, uuid: %s, flags: %#x)\n",
1241 clli->cfg_uuid.uuid, clli->cfg_flags);
1242 clli->cfg_flags |= CFG_F_SKIP;
1244 if (clli->cfg_flags & CFG_F_SKIP) {
1245 CDEBUG(D_CONFIG, "skipping %#x\n",
1248 /* No processing! */
1253 * For interoperability between 1.8 and 2.0,
1254 * rename "mds" obd device type to "mdt".
1257 char *typename = lustre_cfg_string(lcfg, 1);
1258 char *index = lustre_cfg_string(lcfg, 2);
1260 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1261 strcmp(typename, "mds") == 0)) {
1262 CWARN("For 1.8 interoperability, rename obd "
1263 "type from mds to mdt\n");
1266 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1267 strcmp(index, "type") == 0)) {
1268 CDEBUG(D_INFO, "For 1.8 interoperability, "
1269 "set this index to '0'\n");
1275 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1276 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1277 /* Add inactive instead */
1278 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1280 lustre_cfg_bufs_init(&bufs, lcfg);
1282 if (clli && clli->cfg_instance &&
1283 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1285 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1286 sizeof(clli->cfg_instance) * 2 + 1;
1287 OBD_ALLOC(inst_name, inst_len);
1288 if (inst_name == NULL)
1289 GOTO(out, rc = -ENOMEM);
1290 sprintf(inst_name, "%s-%p",
1291 lustre_cfg_string(lcfg, 0),
1292 clli->cfg_instance);
1293 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1294 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1295 lcfg->lcfg_command, inst_name);
1298 /* we override the llog's uuid for clients, to insure they
1300 if (clli && clli->cfg_instance != NULL &&
1301 lcfg->lcfg_command == LCFG_ATTACH) {
1302 lustre_cfg_bufs_set_string(&bufs, 2,
1303 clli->cfg_uuid.uuid);
1306 * sptlrpc config record, we expect 2 data segments:
1307 * [0]: fs_name/target_name,
1309 * moving them to index [1] and [2], and insert MGC's
1310 * obdname at index [0].
1312 if (clli && clli->cfg_instance == NULL &&
1313 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1314 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1315 bufs.lcfg_buflen[1]);
1316 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1317 bufs.lcfg_buflen[0]);
1318 lustre_cfg_bufs_set_string(&bufs, 0,
1322 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1324 lcfg_new->lcfg_num = lcfg->lcfg_num;
1325 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1327 /* XXX Hack to try to remain binary compatible with
1328 * pre-newconfig logs */
1329 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1330 (lcfg->lcfg_nid >> 32) == 0) {
1331 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1333 lcfg_new->lcfg_nid =
1334 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1335 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1336 lcfg->lcfg_nal, addr,
1337 libcfs_nid2str(lcfg_new->lcfg_nid));
1339 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1342 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1344 rc = class_process_config(lcfg_new);
1345 lustre_cfg_free(lcfg_new);
1348 OBD_FREE(inst_name, inst_len);
1352 CERROR("Unknown llog record type %#x encountered\n",
1358 CERROR("Err %d on cfg command:\n", rc);
1359 class_config_dump_handler(handle, rec, data);
1364 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1365 struct config_llog_instance *cfg)
1367 struct llog_process_cat_data cd = {0, 0};
1368 struct llog_handle *llh;
1372 CDEBUG(D_INFO, "looking up llog %s\n", name);
1373 rc = llog_create(ctxt, &llh, NULL, name);
1377 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1379 GOTO(parse_out, rc);
1381 /* continue processing from where we last stopped to end-of-log */
1383 cd.lpcd_first_idx = cfg->cfg_last_idx;
1384 cd.lpcd_last_idx = 0;
1386 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1388 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1389 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1392 cfg->cfg_last_idx = cd.lpcd_last_idx;
1395 rc2 = llog_close(llh);
1402 int class_config_dump_handler(struct llog_handle * handle,
1403 struct llog_rec_hdr *rec, void *data)
1405 int cfg_len = rec->lrh_len;
1406 char *cfg_buf = (char*) (rec + 1);
1407 char *outstr, *ptr, *end;
1411 OBD_ALLOC(outstr, 256);
1417 if (rec->lrh_type == OBD_CFG_REC) {
1418 struct lustre_cfg *lcfg;
1421 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1424 lcfg = (struct lustre_cfg *)cfg_buf;
1426 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1427 lcfg->lcfg_command);
1428 if (lcfg->lcfg_flags) {
1429 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1432 if (lcfg->lcfg_num) {
1433 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1436 if (lcfg->lcfg_nid) {
1437 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1438 libcfs_nid2str(lcfg->lcfg_nid),
1441 if (lcfg->lcfg_command == LCFG_MARKER) {
1442 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1443 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1444 marker->cm_step, marker->cm_flags,
1445 marker->cm_tgtname, marker->cm_comment);
1447 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1448 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1449 lustre_cfg_string(lcfg, i));
1452 LCONSOLE(D_WARNING, " %s\n", outstr);
1454 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1458 OBD_FREE(outstr, 256);
1462 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1463 struct config_llog_instance *cfg)
1465 struct llog_handle *llh;
1469 LCONSOLE_INFO("Dumping config log %s\n", name);
1471 rc = llog_create(ctxt, &llh, NULL, name);
1475 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1477 GOTO(parse_out, rc);
1479 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1481 rc2 = llog_close(llh);
1485 LCONSOLE_INFO("End config log %s\n", name);
1490 /** Call class_cleanup and class_detach.
1491 * "Manual" only in the sense that we're faking lcfg commands.
1493 int class_manual_cleanup(struct obd_device *obd)
1496 struct lustre_cfg *lcfg;
1497 struct lustre_cfg_bufs bufs;
1502 CERROR("empty cleanup\n");
1511 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1512 obd->obd_name, flags);
1514 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1515 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1516 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1520 rc = class_process_config(lcfg);
1522 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1526 /* the lcfg is almost the same for both ops */
1527 lcfg->lcfg_command = LCFG_DETACH;
1528 rc = class_process_config(lcfg);
1530 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1532 lustre_cfg_free(lcfg);
1537 * uuid<->export lustre hash operations
1541 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1543 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1544 sizeof(((struct obd_uuid *)key)->uuid), mask);
1548 uuid_key(cfs_hlist_node_t *hnode)
1550 struct obd_export *exp;
1552 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1554 return &exp->exp_client_uuid;
1558 * NOTE: It is impossible to find an export that is in failed
1559 * state with this function
1562 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1564 struct obd_export *exp;
1567 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1569 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1574 uuid_export_object(cfs_hlist_node_t *hnode)
1576 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1580 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1582 struct obd_export *exp;
1584 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1585 class_export_get(exp);
1589 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1591 struct obd_export *exp;
1593 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1594 class_export_put(exp);
1597 static cfs_hash_ops_t uuid_hash_ops = {
1598 .hs_hash = uuid_hash,
1600 .hs_keycmp = uuid_keycmp,
1601 .hs_object = uuid_export_object,
1602 .hs_get = uuid_export_get,
1603 .hs_put_locked = uuid_export_put_locked,
1608 * nid<->export hash operations
1612 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1614 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1618 nid_key(cfs_hlist_node_t *hnode)
1620 struct obd_export *exp;
1622 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1624 RETURN(&exp->exp_connection->c_peer.nid);
1628 * NOTE: It is impossible to find an export that is in failed
1629 * state with this function
1632 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1634 struct obd_export *exp;
1637 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1639 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1644 nid_export_object(cfs_hlist_node_t *hnode)
1646 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1650 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1652 struct obd_export *exp;
1654 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1655 class_export_get(exp);
1659 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1661 struct obd_export *exp;
1663 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1664 class_export_put(exp);
1667 static cfs_hash_ops_t nid_hash_ops = {
1668 .hs_hash = nid_hash,
1670 .hs_keycmp = nid_kepcmp,
1671 .hs_object = nid_export_object,
1672 .hs_get = nid_export_get,
1673 .hs_put_locked = nid_export_put_locked,
1678 * nid<->nidstats hash operations
1682 nidstats_key(cfs_hlist_node_t *hnode)
1684 struct nid_stat *ns;
1686 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1692 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1694 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1698 nidstats_object(cfs_hlist_node_t *hnode)
1700 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1704 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1706 struct nid_stat *ns;
1708 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1713 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1715 struct nid_stat *ns;
1717 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1721 static cfs_hash_ops_t nid_stat_hash_ops = {
1722 .hs_hash = nid_hash,
1723 .hs_key = nidstats_key,
1724 .hs_keycmp = nidstats_keycmp,
1725 .hs_object = nidstats_object,
1726 .hs_get = nidstats_get,
1727 .hs_put_locked = nidstats_put_locked,