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.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
38 * lustre/obdclass/obd_config.c
43 #define DEBUG_SUBSYSTEM S_CLASS
45 #include <obd_class.h>
46 #include <linux/string.h>
48 #include <liblustre.h>
49 #include <obd_class.h>
52 #include <lustre_log.h>
53 #include <lprocfs_status.h>
54 #include <libcfs/list.h>
55 #include <lustre_param.h>
57 static cfs_hash_ops_t uuid_hash_ops;
58 static cfs_hash_ops_t nid_hash_ops;
59 static cfs_hash_ops_t nid_stat_hash_ops;
61 /*********** string parsing utils *********/
63 /* returns 0 if we find this key in the buffer, else 1 */
64 int class_find_param(char *buf, char *key, char **valp)
71 if ((ptr = strstr(buf, key)) == NULL)
75 *valp = ptr + strlen(key);
81 * Finds a parameter in \a params and copies it to \a copy.
83 * Leading spaces are skipped. Next space or end of string is the
84 * parameter terminator with the exception that spaces inside single or double
85 * quotes get included into a parameter. The parameter is copied into \a copy
86 * which has to be allocated big enough by a caller, quotes are stripped in
87 * the copy and the copy is terminated by 0.
89 * On return \a params is set to next parameter or to NULL if last
90 * parameter is returned.
92 * \retval 0 if parameter is returned in \a copy
94 * \retval -EINVAL if unbalanced quota is found
96 int class_get_next_param(char **params, char *copy)
111 q1 = strpbrk(str, " '\"");
114 memcpy(copy, str, len);
121 memcpy(copy, str, len);
127 memcpy(copy, str, len);
130 /* search for the matching closing quote */
132 q2 = strchr(str, *q1);
134 CERROR("Unbalanced quota in parameters: \"%s\"\n",
139 memcpy(copy, str, len);
146 /* returns 0 if this is the first key in the buffer, else 1.
147 valp points to first char after key. */
148 int class_match_param(char *buf, char *key, char **valp)
153 if (memcmp(buf, key, strlen(key)) != 0)
157 *valp = buf + strlen(key);
162 static int parse_nid(char *buf, void *value)
164 lnet_nid_t *nid = (lnet_nid_t *)value;
166 *nid = libcfs_str2nid(buf);
167 if (*nid != LNET_NID_ANY)
170 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
174 static int parse_net(char *buf, void *value)
176 __u32 *net = (__u32 *)value;
178 *net = libcfs_str2net(buf);
179 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
191 endh is set to next separator */
192 static int class_parse_value(char *buf, int opc, void *value, char **endh)
200 while (*buf == ',' || *buf == ':')
202 if (*buf == ' ' || *buf == '/' || *buf == '\0')
205 /* nid separators or end of nids */
206 endp = strpbrk(buf, ",: /");
208 endp = buf + strlen(buf);
215 case CLASS_PARSE_NID:
216 rc = parse_nid(buf, value);
218 case CLASS_PARSE_NET:
219 rc = parse_net(buf, value);
230 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
232 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh);
235 int class_parse_net(char *buf, __u32 *net, char **endh)
237 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh);
240 /* 1 param contains key and match
241 * 0 param contains key and not match
242 * -1 param does not contain key
244 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
249 while (class_find_param(buf, key, &buf) == 0) {
250 /* please restrict to the nids pertaining to
251 * the specified nids */
252 while (class_parse_nid(buf, &tmp, &buf) == 0) {
261 int class_match_net(char *buf, char *key, __u32 net)
266 while (class_find_param(buf, key, &buf) == 0) {
267 /* please restrict to the nids pertaining to
268 * the specified networks */
269 while (class_parse_net(buf, &tmp, &buf) == 0) {
278 EXPORT_SYMBOL(class_find_param);
279 EXPORT_SYMBOL(class_get_next_param);
280 EXPORT_SYMBOL(class_match_param);
281 EXPORT_SYMBOL(class_parse_nid);
282 EXPORT_SYMBOL(class_parse_net);
283 EXPORT_SYMBOL(class_match_nid);
284 EXPORT_SYMBOL(class_match_net);
286 /********************** class fns **********************/
289 * Create a new obd device and set the type, name and uuid. If successful,
290 * the new device can be accessed by either name or uuid.
292 int class_attach(struct lustre_cfg *lcfg)
294 struct obd_device *obd = NULL;
295 char *typename, *name, *uuid;
299 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
300 CERROR("No type passed!\n");
303 typename = lustre_cfg_string(lcfg, 1);
305 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
306 CERROR("No name passed!\n");
309 name = lustre_cfg_string(lcfg, 0);
311 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
312 CERROR("No UUID passed!\n");
315 uuid = lustre_cfg_string(lcfg, 2);
317 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
318 MKSTR(typename), MKSTR(name), MKSTR(uuid));
320 obd = class_newdev(typename, name);
322 /* Already exists or out of obds */
325 CERROR("Cannot create device %s of type %s : %d\n",
329 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
331 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
332 "obd %p obd_magic %08X != %08X\n",
333 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
334 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
335 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
337 cfs_rwlock_init(&obd->obd_pool_lock);
338 obd->obd_pool_limit = 0;
339 obd->obd_pool_slv = 0;
341 CFS_INIT_LIST_HEAD(&obd->obd_exports);
342 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
343 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
344 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
345 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
346 cfs_spin_lock_init(&obd->obd_nid_lock);
347 cfs_spin_lock_init(&obd->obd_dev_lock);
348 cfs_mutex_init(&obd->obd_dev_mutex);
349 cfs_spin_lock_init(&obd->obd_osfs_lock);
350 /* obd->obd_osfs_age must be set to a value in the distant
351 * past to guarantee a fresh statfs is fetched on mount. */
352 obd->obd_osfs_age = cfs_time_shift_64(-1000);
354 /* XXX belongs in setup not attach */
355 cfs_init_rwsem(&obd->obd_observer_link_sem);
357 cfs_init_timer(&obd->obd_recovery_timer);
358 cfs_spin_lock_init(&obd->obd_recovery_task_lock);
359 cfs_waitq_init(&obd->obd_next_transno_waitq);
360 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
361 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
362 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
363 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
364 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
366 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
369 if (len >= sizeof(obd->obd_uuid)) {
370 CERROR("uuid must be < %d bytes long\n",
371 (int)sizeof(obd->obd_uuid));
372 GOTO(out, rc = -EINVAL);
374 memcpy(obd->obd_uuid.uuid, uuid, len);
377 if (OBP(obd, attach)) {
378 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
380 GOTO(out, rc = -EINVAL);
383 /* Detach drops this */
384 cfs_spin_lock(&obd->obd_dev_lock);
385 cfs_atomic_set(&obd->obd_refcount, 1);
386 cfs_spin_unlock(&obd->obd_dev_lock);
387 lu_ref_init(&obd->obd_reference);
388 lu_ref_add(&obd->obd_reference, "attach", obd);
390 obd->obd_attached = 1;
391 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
392 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
396 class_release_dev(obd);
401 /** Create hashes, self-export, and call type-specific setup.
402 * Setup is effectively the "start this obd" call.
404 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
407 struct obd_export *exp;
410 LASSERT(obd != NULL);
411 LASSERTF(obd == class_num2obd(obd->obd_minor),
412 "obd %p != obd_devs[%d] %p\n",
413 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
414 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
415 "obd %p obd_magic %08x != %08x\n",
416 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
418 /* have we attached a type to this device? */
419 if (!obd->obd_attached) {
420 CERROR("Device %d not attached\n", obd->obd_minor);
424 if (obd->obd_set_up) {
425 CERROR("Device %d already setup (type %s)\n",
426 obd->obd_minor, obd->obd_type->typ_name);
430 /* is someone else setting us up right now? (attach inits spinlock) */
431 cfs_spin_lock(&obd->obd_dev_lock);
432 if (obd->obd_starting) {
433 cfs_spin_unlock(&obd->obd_dev_lock);
434 CERROR("Device %d setup in progress (type %s)\n",
435 obd->obd_minor, obd->obd_type->typ_name);
438 /* just leave this on forever. I can't use obd_set_up here because
439 other fns check that status, and we're not actually set up yet. */
440 obd->obd_starting = 1;
441 obd->obd_uuid_hash = NULL;
442 obd->obd_nid_hash = NULL;
443 obd->obd_nid_stats_hash = NULL;
444 cfs_spin_unlock(&obd->obd_dev_lock);
446 /* create an uuid-export lustre hash */
447 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
450 HASH_UUID_BKT_BITS, 0,
453 &uuid_hash_ops, CFS_HASH_DEFAULT);
454 if (!obd->obd_uuid_hash)
455 GOTO(err_hash, err = -ENOMEM);
457 /* create a nid-export lustre hash */
458 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
461 HASH_NID_BKT_BITS, 0,
464 &nid_hash_ops, CFS_HASH_DEFAULT);
465 if (!obd->obd_nid_hash)
466 GOTO(err_hash, err = -ENOMEM);
468 /* create a nid-stats lustre hash */
469 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
470 HASH_NID_STATS_CUR_BITS,
471 HASH_NID_STATS_MAX_BITS,
472 HASH_NID_STATS_BKT_BITS, 0,
475 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
476 if (!obd->obd_nid_stats_hash)
477 GOTO(err_hash, err = -ENOMEM);
479 exp = class_new_export(obd, &obd->obd_uuid);
481 GOTO(err_hash, err = PTR_ERR(exp));
483 obd->obd_self_export = exp;
484 cfs_list_del_init(&exp->exp_obd_chain_timed);
485 class_export_put(exp);
487 err = obd_setup(obd, lcfg);
493 cfs_spin_lock(&obd->obd_dev_lock);
494 /* cleanup drops this */
495 class_incref(obd, "setup", obd);
496 cfs_spin_unlock(&obd->obd_dev_lock);
498 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
499 obd->obd_name, obd->obd_uuid.uuid);
503 if (obd->obd_self_export) {
504 class_unlink_export(obd->obd_self_export);
505 obd->obd_self_export = NULL;
508 if (obd->obd_uuid_hash) {
509 cfs_hash_putref(obd->obd_uuid_hash);
510 obd->obd_uuid_hash = NULL;
512 if (obd->obd_nid_hash) {
513 cfs_hash_putref(obd->obd_nid_hash);
514 obd->obd_nid_hash = NULL;
516 if (obd->obd_nid_stats_hash) {
517 cfs_hash_putref(obd->obd_nid_stats_hash);
518 obd->obd_nid_stats_hash = NULL;
520 obd->obd_starting = 0;
521 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
525 /** We have finished using this obd and are ready to destroy it.
526 * There can be no more references to this obd.
528 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
532 if (obd->obd_set_up) {
533 CERROR("OBD device %d still set up\n", obd->obd_minor);
537 cfs_spin_lock(&obd->obd_dev_lock);
538 if (!obd->obd_attached) {
539 cfs_spin_unlock(&obd->obd_dev_lock);
540 CERROR("OBD device %d not attached\n", obd->obd_minor);
543 obd->obd_attached = 0;
544 cfs_spin_unlock(&obd->obd_dev_lock);
546 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
547 obd->obd_name, obd->obd_uuid.uuid);
549 class_decref(obd, "attach", obd);
553 /** Start shutting down the obd. There may be in-progess ops when
554 * this is called. We tell them to start shutting down with a call
555 * to class_disconnect_exports().
557 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
563 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
565 if (!obd->obd_set_up) {
566 CERROR("Device %d not setup\n", obd->obd_minor);
570 cfs_spin_lock(&obd->obd_dev_lock);
571 if (obd->obd_stopping) {
572 cfs_spin_unlock(&obd->obd_dev_lock);
573 CERROR("OBD %d already stopping\n", obd->obd_minor);
576 /* Leave this on forever */
577 obd->obd_stopping = 1;
578 cfs_spin_unlock(&obd->obd_dev_lock);
580 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
581 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
587 LCONSOLE_WARN("Failing over %s\n",
590 obd->obd_no_transno = 1;
591 obd->obd_no_recov = 1;
592 if (OBP(obd, iocontrol)) {
593 obd_iocontrol(OBD_IOC_SYNC,
594 obd->obd_self_export,
599 CERROR("Unrecognised flag '%c'\n", *flag);
603 LASSERT(obd->obd_self_export);
605 /* The three references that should be remaining are the
606 * obd_self_export and the attach and setup references. */
607 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
608 /* refcounf - 3 might be the number of real exports
609 (excluding self export). But class_incref is called
610 by other things as well, so don't count on it. */
611 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
612 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
613 dump_exports(obd, 0);
614 class_disconnect_exports(obd);
617 /* Precleanup, we must make sure all exports get destroyed. */
618 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
620 CERROR("Precleanup %s returned %d\n",
623 /* destroy an uuid-export hash body */
624 if (obd->obd_uuid_hash) {
625 cfs_hash_putref(obd->obd_uuid_hash);
626 obd->obd_uuid_hash = NULL;
629 /* destroy a nid-export hash body */
630 if (obd->obd_nid_hash) {
631 cfs_hash_putref(obd->obd_nid_hash);
632 obd->obd_nid_hash = NULL;
635 /* destroy a nid-stats hash body */
636 if (obd->obd_nid_stats_hash) {
637 cfs_hash_putref(obd->obd_nid_stats_hash);
638 obd->obd_nid_stats_hash = NULL;
641 class_decref(obd, "setup", obd);
647 struct obd_device *class_incref(struct obd_device *obd,
648 const char *scope, const void *source)
650 lu_ref_add_atomic(&obd->obd_reference, scope, source);
651 cfs_atomic_inc(&obd->obd_refcount);
652 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
653 cfs_atomic_read(&obd->obd_refcount));
658 void class_decref(struct obd_device *obd, const char *scope, const void *source)
663 cfs_spin_lock(&obd->obd_dev_lock);
664 cfs_atomic_dec(&obd->obd_refcount);
665 refs = cfs_atomic_read(&obd->obd_refcount);
666 cfs_spin_unlock(&obd->obd_dev_lock);
667 lu_ref_del(&obd->obd_reference, scope, source);
669 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
671 if ((refs == 1) && obd->obd_stopping) {
672 /* All exports have been destroyed; there should
673 be no more in-progress ops by this point.*/
675 cfs_spin_lock(&obd->obd_self_export->exp_lock);
676 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
677 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
679 /* note that we'll recurse into class_decref again */
680 class_unlink_export(obd->obd_self_export);
685 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
686 obd->obd_name, obd->obd_uuid.uuid);
687 LASSERT(!obd->obd_attached);
688 if (obd->obd_stopping) {
689 /* If we're not stopping, we were never set up */
690 err = obd_cleanup(obd);
692 CERROR("Cleanup %s returned %d\n",
695 if (OBP(obd, detach)) {
696 err = OBP(obd, detach)(obd);
698 CERROR("Detach returned %d\n", err);
700 class_release_dev(obd);
704 /** Add a failover nid location.
705 * Client obd types contact server obd types using this nid list.
707 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
709 struct obd_import *imp;
710 struct obd_uuid uuid;
714 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
715 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
716 CERROR("invalid conn_uuid\n");
719 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
720 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
721 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
722 CERROR("can't add connection on non-client dev\n");
726 imp = obd->u.cli.cl_import;
728 CERROR("try to add conn on immature client dev\n");
732 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
733 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
738 /** Remove a failover nid location.
740 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
742 struct obd_import *imp;
743 struct obd_uuid uuid;
747 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
748 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
749 CERROR("invalid conn_uuid\n");
752 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
753 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
754 CERROR("can't del connection on non-client dev\n");
758 imp = obd->u.cli.cl_import;
760 CERROR("try to del conn on immature client dev\n");
764 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
765 rc = obd_del_conn(imp, &uuid);
770 CFS_LIST_HEAD(lustre_profile_list);
772 struct lustre_profile *class_get_profile(const char * prof)
774 struct lustre_profile *lprof;
777 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
778 if (!strcmp(lprof->lp_profile, prof)) {
785 /** Create a named "profile".
786 * This defines the mdc and osc names to use for a client.
787 * This also is used to define the lov to be used by a mdt.
789 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
790 int mdclen, char *mdc)
792 struct lustre_profile *lprof;
796 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
798 OBD_ALLOC(lprof, sizeof(*lprof));
801 CFS_INIT_LIST_HEAD(&lprof->lp_list);
803 LASSERT(proflen == (strlen(prof) + 1));
804 OBD_ALLOC(lprof->lp_profile, proflen);
805 if (lprof->lp_profile == NULL)
806 GOTO(out, err = -ENOMEM);
807 memcpy(lprof->lp_profile, prof, proflen);
809 LASSERT(osclen == (strlen(osc) + 1));
810 OBD_ALLOC(lprof->lp_dt, osclen);
811 if (lprof->lp_dt == NULL)
812 GOTO(out, err = -ENOMEM);
813 memcpy(lprof->lp_dt, osc, osclen);
816 LASSERT(mdclen == (strlen(mdc) + 1));
817 OBD_ALLOC(lprof->lp_md, mdclen);
818 if (lprof->lp_md == NULL)
819 GOTO(out, err = -ENOMEM);
820 memcpy(lprof->lp_md, mdc, mdclen);
823 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
828 OBD_FREE(lprof->lp_md, mdclen);
830 OBD_FREE(lprof->lp_dt, osclen);
831 if (lprof->lp_profile)
832 OBD_FREE(lprof->lp_profile, proflen);
833 OBD_FREE(lprof, sizeof(*lprof));
837 void class_del_profile(const char *prof)
839 struct lustre_profile *lprof;
842 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
844 lprof = class_get_profile(prof);
846 cfs_list_del(&lprof->lp_list);
847 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
848 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
850 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
851 OBD_FREE(lprof, sizeof *lprof);
857 void class_del_profiles(void)
859 struct lustre_profile *lprof, *n;
862 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
863 cfs_list_del(&lprof->lp_list);
864 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
865 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
867 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
868 OBD_FREE(lprof, sizeof *lprof);
873 static int class_set_global(char *ptr, int val) {
876 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
878 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
880 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
882 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
883 at_early_margin = val;
884 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
889 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
895 /* We can't call ll_process_config directly because it lives in a module that
896 must be loaded after this one. */
897 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
899 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
901 client_process_config = cpc;
903 EXPORT_SYMBOL(lustre_register_client_process_config);
905 /** Process configuration commands given in lustre_cfg form.
906 * These may come from direct calls (e.g. class_manual_cleanup)
907 * or processing the config llog, or ioctl from lctl.
909 int class_process_config(struct lustre_cfg *lcfg)
911 struct obd_device *obd;
914 LASSERT(lcfg && !IS_ERR(lcfg));
915 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
917 /* Commands that don't need a device */
918 switch(lcfg->lcfg_command) {
920 err = class_attach(lcfg);
923 case LCFG_ADD_UUID: {
924 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
925 " (%s)\n", lustre_cfg_string(lcfg, 1),
926 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
928 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
931 case LCFG_DEL_UUID: {
932 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
933 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
934 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
936 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
939 case LCFG_MOUNTOPT: {
940 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
941 lustre_cfg_string(lcfg, 1),
942 lustre_cfg_string(lcfg, 2),
943 lustre_cfg_string(lcfg, 3));
944 /* set these mount options somewhere, so ll_fill_super
946 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
947 lustre_cfg_string(lcfg, 1),
948 LUSTRE_CFG_BUFLEN(lcfg, 2),
949 lustre_cfg_string(lcfg, 2),
950 LUSTRE_CFG_BUFLEN(lcfg, 3),
951 lustre_cfg_string(lcfg, 3));
954 case LCFG_DEL_MOUNTOPT: {
955 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
956 lustre_cfg_string(lcfg, 1));
957 class_del_profile(lustre_cfg_string(lcfg, 1));
960 case LCFG_SET_TIMEOUT: {
961 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
962 obd_timeout, lcfg->lcfg_num);
963 obd_timeout = max(lcfg->lcfg_num, 1U);
966 case LCFG_SET_LDLM_TIMEOUT: {
967 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
968 ldlm_timeout, lcfg->lcfg_num);
969 ldlm_timeout = max(lcfg->lcfg_num, 1U);
970 if (ldlm_timeout >= obd_timeout)
971 ldlm_timeout = max(obd_timeout / 3, 1U);
975 case LCFG_SET_UPCALL: {
976 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
977 /* COMPAT_146 Don't fail on old configs */
981 struct cfg_marker *marker;
982 marker = lustre_cfg_buf(lcfg, 1);
983 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
984 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
989 /* llite has no obd */
990 if ((class_match_param(lustre_cfg_string(lcfg, 1),
991 PARAM_LLITE, 0) == 0) &&
992 client_process_config) {
993 err = (*client_process_config)(lcfg);
995 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
996 PARAM_SYS, &tmp) == 0)) {
997 /* Global param settings */
998 err = class_set_global(tmp, lcfg->lcfg_num);
999 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
1000 unknown globals would cause config to fail */
1002 CWARN("Ignoring unknown param %s\n", tmp);
1011 /* Commands that require a device */
1012 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1014 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1015 CERROR("this lcfg command requires a device name\n");
1017 CERROR("no device for: %s\n",
1018 lustre_cfg_string(lcfg, 0));
1020 GOTO(out, err = -EINVAL);
1023 switch(lcfg->lcfg_command) {
1025 err = class_setup(obd, lcfg);
1029 err = class_detach(obd, lcfg);
1032 case LCFG_CLEANUP: {
1033 err = class_cleanup(obd, lcfg);
1036 case LCFG_ADD_CONN: {
1037 err = class_add_conn(obd, lcfg);
1040 case LCFG_DEL_CONN: {
1041 err = class_del_conn(obd, lcfg);
1044 case LCFG_POOL_NEW: {
1045 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1049 case LCFG_POOL_ADD: {
1050 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1051 lustre_cfg_string(lcfg, 3));
1055 case LCFG_POOL_REM: {
1056 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1057 lustre_cfg_string(lcfg, 3));
1061 case LCFG_POOL_DEL: {
1062 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1067 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1073 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1074 CWARN("Ignoring error %d on optional command %#x\n", err,
1075 lcfg->lcfg_command);
1081 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1082 struct lustre_cfg *lcfg, void *data)
1085 struct lprocfs_vars *var;
1087 int i, keylen, vallen;
1088 int matched = 0, j = 0;
1093 if (lcfg->lcfg_command != LCFG_PARAM) {
1094 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1098 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1099 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1100 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1101 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1102 key = lustre_cfg_buf(lcfg, i);
1103 /* Strip off prefix */
1104 class_match_param(key, prefix, &key);
1105 sval = strchr(key, '=');
1106 if (!sval || (*(sval + 1) == 0)) {
1107 CERROR("Can't parse param %s (missing '=')\n", key);
1108 /* rc = -EINVAL; continue parsing other params */
1111 keylen = sval - key;
1113 vallen = strlen(sval);
1116 /* Search proc entries */
1117 while (lvars[j].name) {
1119 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1120 keylen == strlen(var->name)) {
1123 if (var->write_fptr) {
1127 rc = (var->write_fptr)(NULL, sval,
1136 /* If the prefix doesn't match, return error so we
1137 can pass it down the stack */
1138 if (strnchr(key, keylen, '.'))
1140 CERROR("%s: unknown param %s\n",
1141 (char *)lustre_cfg_string(lcfg, 0), key);
1142 /* rc = -EINVAL; continue parsing other params */
1144 } else if (rc < 0) {
1145 CERROR("writing proc entry %s err %d\n",
1149 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1150 lustre_cfg_string(lcfg, 0),
1151 (int)strlen(prefix) - 1, prefix,
1152 (int)(sval - key - 1), key, sval);
1162 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1163 /* Don't throw config error */
1168 int class_config_dump_handler(struct llog_handle * handle,
1169 struct llog_rec_hdr *rec, void *data);
1172 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1174 #define lustre_check_exclusion(a,b) 0
1177 /** Parse a configuration llog, doing various manipulations on them
1178 * for various reasons, (modifications for compatibility, skip obsolete
1179 * records, change uuids, etc), then class_process_config() resulting
1182 static int class_config_llog_handler(struct llog_handle * handle,
1183 struct llog_rec_hdr *rec, void *data)
1185 struct config_llog_instance *clli = data;
1186 int cfg_len = rec->lrh_len;
1187 char *cfg_buf = (char*) (rec + 1);
1191 //class_config_dump_handler(handle, rec, data);
1193 switch (rec->lrh_type) {
1195 struct lustre_cfg *lcfg, *lcfg_new;
1196 struct lustre_cfg_bufs bufs;
1197 char *inst_name = NULL;
1199 int inst = 0, swab = 0;
1201 lcfg = (struct lustre_cfg *)cfg_buf;
1202 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1203 lustre_swab_lustre_cfg(lcfg);
1207 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1211 /* Figure out config state info */
1212 if (lcfg->lcfg_command == LCFG_MARKER) {
1213 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1214 lustre_swab_cfg_marker(marker, swab,
1215 LUSTRE_CFG_BUFLEN(lcfg, 1));
1216 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1217 clli->cfg_flags, marker->cm_flags);
1218 if (marker->cm_flags & CM_START) {
1219 /* all previous flags off */
1220 clli->cfg_flags = CFG_F_MARKER;
1221 if (marker->cm_flags & CM_SKIP) {
1222 clli->cfg_flags |= CFG_F_SKIP;
1223 CDEBUG(D_CONFIG, "SKIP #%d\n",
1225 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1227 lustre_check_exclusion(clli->cfg_sb,
1228 marker->cm_tgtname))) {
1229 clli->cfg_flags |= CFG_F_EXCLUDE;
1230 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1233 } else if (marker->cm_flags & CM_END) {
1234 clli->cfg_flags = 0;
1237 /* A config command without a start marker before it is
1238 illegal (post 146) */
1239 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1240 !(clli->cfg_flags & CFG_F_MARKER) &&
1241 (lcfg->lcfg_command != LCFG_MARKER)) {
1242 CWARN("Config not inside markers, ignoring! "
1243 "(inst: %p, uuid: %s, flags: %#x)\n",
1245 clli->cfg_uuid.uuid, clli->cfg_flags);
1246 clli->cfg_flags |= CFG_F_SKIP;
1248 if (clli->cfg_flags & CFG_F_SKIP) {
1249 CDEBUG(D_CONFIG, "skipping %#x\n",
1252 /* No processing! */
1257 * For interoperability between 1.8 and 2.0,
1258 * rename "mds" obd device type to "mdt".
1261 char *typename = lustre_cfg_string(lcfg, 1);
1262 char *index = lustre_cfg_string(lcfg, 2);
1264 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1265 strcmp(typename, "mds") == 0)) {
1266 CWARN("For 1.8 interoperability, rename obd "
1267 "type from mds to mdt\n");
1270 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1271 strcmp(index, "type") == 0)) {
1272 CDEBUG(D_INFO, "For 1.8 interoperability, "
1273 "set this index to '0'\n");
1279 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1280 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1281 /* Add inactive instead */
1282 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1284 lustre_cfg_bufs_init(&bufs, lcfg);
1286 if (clli && clli->cfg_instance &&
1287 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1289 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1290 sizeof(clli->cfg_instance) * 2 + 4;
1291 OBD_ALLOC(inst_name, inst_len);
1292 if (inst_name == NULL)
1293 GOTO(out, rc = -ENOMEM);
1294 sprintf(inst_name, "%s-%p",
1295 lustre_cfg_string(lcfg, 0),
1296 clli->cfg_instance);
1297 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1298 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1299 lcfg->lcfg_command, inst_name);
1302 /* we override the llog's uuid for clients, to insure they
1304 if (clli && clli->cfg_instance != NULL &&
1305 lcfg->lcfg_command == LCFG_ATTACH) {
1306 lustre_cfg_bufs_set_string(&bufs, 2,
1307 clli->cfg_uuid.uuid);
1310 * sptlrpc config record, we expect 2 data segments:
1311 * [0]: fs_name/target_name,
1313 * moving them to index [1] and [2], and insert MGC's
1314 * obdname at index [0].
1316 if (clli && clli->cfg_instance == NULL &&
1317 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1318 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1319 bufs.lcfg_buflen[1]);
1320 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1321 bufs.lcfg_buflen[0]);
1322 lustre_cfg_bufs_set_string(&bufs, 0,
1326 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1328 lcfg_new->lcfg_num = lcfg->lcfg_num;
1329 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1331 /* XXX Hack to try to remain binary compatible with
1332 * pre-newconfig logs */
1333 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1334 (lcfg->lcfg_nid >> 32) == 0) {
1335 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1337 lcfg_new->lcfg_nid =
1338 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1339 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1340 lcfg->lcfg_nal, addr,
1341 libcfs_nid2str(lcfg_new->lcfg_nid));
1343 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1346 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1348 rc = class_process_config(lcfg_new);
1349 lustre_cfg_free(lcfg_new);
1352 OBD_FREE(inst_name, inst_len);
1356 CERROR("Unknown llog record type %#x encountered\n",
1362 CERROR("Err %d on cfg command:\n", rc);
1363 class_config_dump_handler(handle, rec, data);
1368 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1369 struct config_llog_instance *cfg)
1371 struct llog_process_cat_data cd = {0, 0};
1372 struct llog_handle *llh;
1376 CDEBUG(D_INFO, "looking up llog %s\n", name);
1377 rc = llog_create(ctxt, &llh, NULL, name);
1381 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1383 GOTO(parse_out, rc);
1385 /* continue processing from where we last stopped to end-of-log */
1387 cd.lpcd_first_idx = cfg->cfg_last_idx;
1388 cd.lpcd_last_idx = 0;
1390 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1392 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1393 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1396 cfg->cfg_last_idx = cd.lpcd_last_idx;
1399 rc2 = llog_close(llh);
1406 int class_config_dump_handler(struct llog_handle * handle,
1407 struct llog_rec_hdr *rec, void *data)
1409 int cfg_len = rec->lrh_len;
1410 char *cfg_buf = (char*) (rec + 1);
1411 char *outstr, *ptr, *end;
1415 OBD_ALLOC(outstr, 256);
1421 if (rec->lrh_type == OBD_CFG_REC) {
1422 struct lustre_cfg *lcfg;
1425 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1428 lcfg = (struct lustre_cfg *)cfg_buf;
1430 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1431 lcfg->lcfg_command);
1432 if (lcfg->lcfg_flags) {
1433 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1436 if (lcfg->lcfg_num) {
1437 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1440 if (lcfg->lcfg_nid) {
1441 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1442 libcfs_nid2str(lcfg->lcfg_nid),
1445 if (lcfg->lcfg_command == LCFG_MARKER) {
1446 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1447 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1448 marker->cm_step, marker->cm_flags,
1449 marker->cm_tgtname, marker->cm_comment);
1451 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1452 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1453 lustre_cfg_string(lcfg, i));
1456 LCONSOLE(D_WARNING, " %s\n", outstr);
1458 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1462 OBD_FREE(outstr, 256);
1466 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1467 struct config_llog_instance *cfg)
1469 struct llog_handle *llh;
1473 LCONSOLE_INFO("Dumping config log %s\n", name);
1475 rc = llog_create(ctxt, &llh, NULL, name);
1479 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1481 GOTO(parse_out, rc);
1483 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1485 rc2 = llog_close(llh);
1489 LCONSOLE_INFO("End config log %s\n", name);
1494 /** Call class_cleanup and class_detach.
1495 * "Manual" only in the sense that we're faking lcfg commands.
1497 int class_manual_cleanup(struct obd_device *obd)
1500 struct lustre_cfg *lcfg;
1501 struct lustre_cfg_bufs bufs;
1506 CERROR("empty cleanup\n");
1515 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1516 obd->obd_name, flags);
1518 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1519 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1520 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1524 rc = class_process_config(lcfg);
1526 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1530 /* the lcfg is almost the same for both ops */
1531 lcfg->lcfg_command = LCFG_DETACH;
1532 rc = class_process_config(lcfg);
1534 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1536 lustre_cfg_free(lcfg);
1541 * uuid<->export lustre hash operations
1545 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1547 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1548 sizeof(((struct obd_uuid *)key)->uuid), mask);
1552 uuid_key(cfs_hlist_node_t *hnode)
1554 struct obd_export *exp;
1556 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1558 return &exp->exp_client_uuid;
1562 * NOTE: It is impossible to find an export that is in failed
1563 * state with this function
1566 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1568 struct obd_export *exp;
1571 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1573 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1578 uuid_export_object(cfs_hlist_node_t *hnode)
1580 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1584 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1586 struct obd_export *exp;
1588 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1589 class_export_get(exp);
1593 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1595 struct obd_export *exp;
1597 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1598 class_export_put(exp);
1601 static cfs_hash_ops_t uuid_hash_ops = {
1602 .hs_hash = uuid_hash,
1604 .hs_keycmp = uuid_keycmp,
1605 .hs_object = uuid_export_object,
1606 .hs_get = uuid_export_get,
1607 .hs_put_locked = uuid_export_put_locked,
1612 * nid<->export hash operations
1616 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1618 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1622 nid_key(cfs_hlist_node_t *hnode)
1624 struct obd_export *exp;
1626 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1628 RETURN(&exp->exp_connection->c_peer.nid);
1632 * NOTE: It is impossible to find an export that is in failed
1633 * state with this function
1636 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1638 struct obd_export *exp;
1641 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1643 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1648 nid_export_object(cfs_hlist_node_t *hnode)
1650 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1654 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1656 struct obd_export *exp;
1658 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1659 class_export_get(exp);
1663 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1665 struct obd_export *exp;
1667 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1668 class_export_put(exp);
1671 static cfs_hash_ops_t nid_hash_ops = {
1672 .hs_hash = nid_hash,
1674 .hs_keycmp = nid_kepcmp,
1675 .hs_object = nid_export_object,
1676 .hs_get = nid_export_get,
1677 .hs_put_locked = nid_export_put_locked,
1682 * nid<->nidstats hash operations
1686 nidstats_key(cfs_hlist_node_t *hnode)
1688 struct nid_stat *ns;
1690 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1696 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1698 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1702 nidstats_object(cfs_hlist_node_t *hnode)
1704 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1708 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1710 struct nid_stat *ns;
1712 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1717 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1719 struct nid_stat *ns;
1721 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1725 static cfs_hash_ops_t nid_stat_hash_ops = {
1726 .hs_hash = nid_hash,
1727 .hs_key = nidstats_key,
1728 .hs_keycmp = nidstats_keycmp,
1729 .hs_object = nidstats_object,
1730 .hs_get = nidstats_get,
1731 .hs_put_locked = nidstats_put_locked,