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 int class_match_net(char *buf, lnet_nid_t nid)
242 while (class_find_param(buf, PARAM_NETWORK, &buf) == 0) {
243 /* please restrict to the nids pertaining to
244 * the specified networks */
245 while (class_parse_net(buf, &net, &buf) == 0) {
246 if (LNET_NIDNET(nid) == net)
253 EXPORT_SYMBOL(class_find_param);
254 EXPORT_SYMBOL(class_get_next_param);
255 EXPORT_SYMBOL(class_match_param);
256 EXPORT_SYMBOL(class_parse_nid);
257 EXPORT_SYMBOL(class_parse_net);
258 EXPORT_SYMBOL(class_match_net);
260 /********************** class fns **********************/
263 * Create a new obd device and set the type, name and uuid. If successful,
264 * the new device can be accessed by either name or uuid.
266 int class_attach(struct lustre_cfg *lcfg)
268 struct obd_device *obd = NULL;
269 char *typename, *name, *uuid;
273 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
274 CERROR("No type passed!\n");
277 typename = lustre_cfg_string(lcfg, 1);
279 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
280 CERROR("No name passed!\n");
283 name = lustre_cfg_string(lcfg, 0);
285 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
286 CERROR("No UUID passed!\n");
289 uuid = lustre_cfg_string(lcfg, 2);
291 if (strlen(uuid) >= sizeof(obd->obd_uuid)) {
292 CERROR("uuid must be < %d bytes long\n",
293 (int)sizeof(obd->obd_uuid));
297 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
298 MKSTR(typename), MKSTR(name), MKSTR(uuid));
300 obd = class_newdev(typename, name, uuid);
302 /* Already exists or out of obds */
305 CERROR("Cannot create device %s of type %s : %d\n",
310 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
312 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
313 "obd %p obd_magic %08X != %08X\n",
314 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
315 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
316 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
318 cfs_rwlock_init(&obd->obd_pool_lock);
319 obd->obd_pool_limit = 0;
320 obd->obd_pool_slv = 0;
322 CFS_INIT_LIST_HEAD(&obd->obd_exports);
323 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
324 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
325 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
326 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
327 cfs_spin_lock_init(&obd->obd_nid_lock);
328 cfs_spin_lock_init(&obd->obd_dev_lock);
329 cfs_sema_init(&obd->obd_dev_sem, 1);
330 cfs_spin_lock_init(&obd->obd_osfs_lock);
331 /* obd->obd_osfs_age must be set to a value in the distant
332 * past to guarantee a fresh statfs is fetched on mount. */
333 obd->obd_osfs_age = cfs_time_shift_64(-1000);
335 /* XXX belongs in setup not attach */
336 cfs_init_rwsem(&obd->obd_observer_link_sem);
338 cfs_init_timer(&obd->obd_recovery_timer);
339 cfs_spin_lock_init(&obd->obd_recovery_task_lock);
340 cfs_waitq_init(&obd->obd_next_transno_waitq);
341 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
342 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
343 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
344 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
345 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
347 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
350 if (OBP(obd, attach)) {
351 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
353 GOTO(out, rc = -EINVAL);
356 /* Detach drops this */
357 cfs_spin_lock(&obd->obd_dev_lock);
358 cfs_atomic_set(&obd->obd_refcount, 1);
359 cfs_spin_unlock(&obd->obd_dev_lock);
360 lu_ref_init(&obd->obd_reference);
361 lu_ref_add(&obd->obd_reference, "attach", obd);
363 obd->obd_attached = 1;
364 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
365 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
369 class_release_dev(obd);
374 /** Create hashes, self-export, and call type-specific setup.
375 * Setup is effectively the "start this obd" call.
377 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
380 struct obd_export *exp;
383 LASSERT(obd != NULL);
384 LASSERTF(obd == class_num2obd(obd->obd_minor),
385 "obd %p != obd_devs[%d] %p\n",
386 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
387 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
388 "obd %p obd_magic %08x != %08x\n",
389 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
391 /* have we attached a type to this device? */
392 if (!obd->obd_attached) {
393 CERROR("Device %d not attached\n", obd->obd_minor);
397 if (obd->obd_set_up) {
398 CERROR("Device %d already setup (type %s)\n",
399 obd->obd_minor, obd->obd_type->typ_name);
403 /* is someone else setting us up right now? (attach inits spinlock) */
404 cfs_spin_lock(&obd->obd_dev_lock);
405 if (obd->obd_starting) {
406 cfs_spin_unlock(&obd->obd_dev_lock);
407 CERROR("Device %d setup in progress (type %s)\n",
408 obd->obd_minor, obd->obd_type->typ_name);
411 /* just leave this on forever. I can't use obd_set_up here because
412 other fns check that status, and we're not actually set up yet. */
413 obd->obd_starting = 1;
414 obd->obd_uuid_hash = NULL;
415 obd->obd_nid_hash = NULL;
416 obd->obd_nid_stats_hash = NULL;
417 cfs_spin_unlock(&obd->obd_dev_lock);
419 /* create an uuid-export lustre hash */
420 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
423 HASH_UUID_BKT_BITS, 0,
426 &uuid_hash_ops, CFS_HASH_DEFAULT);
427 if (!obd->obd_uuid_hash)
428 GOTO(err_hash, err = -ENOMEM);
430 /* create a nid-export lustre hash */
431 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
434 HASH_NID_BKT_BITS, 0,
437 &nid_hash_ops, CFS_HASH_DEFAULT);
438 if (!obd->obd_nid_hash)
439 GOTO(err_hash, err = -ENOMEM);
441 /* create a nid-stats lustre hash */
442 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
443 HASH_NID_STATS_CUR_BITS,
444 HASH_NID_STATS_MAX_BITS,
445 HASH_NID_STATS_BKT_BITS, 0,
448 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
449 if (!obd->obd_nid_stats_hash)
450 GOTO(err_hash, err = -ENOMEM);
452 exp = class_new_export(obd, &obd->obd_uuid);
454 GOTO(err_hash, err = PTR_ERR(exp));
456 obd->obd_self_export = exp;
457 cfs_list_del_init(&exp->exp_obd_chain_timed);
458 class_export_put(exp);
460 err = obd_setup(obd, lcfg);
466 cfs_spin_lock(&obd->obd_dev_lock);
467 /* cleanup drops this */
468 class_incref(obd, "setup", obd);
469 cfs_spin_unlock(&obd->obd_dev_lock);
471 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
472 obd->obd_name, obd->obd_uuid.uuid);
476 if (obd->obd_self_export) {
477 class_unlink_export(obd->obd_self_export);
478 obd->obd_self_export = NULL;
481 if (obd->obd_uuid_hash) {
482 cfs_hash_putref(obd->obd_uuid_hash);
483 obd->obd_uuid_hash = NULL;
485 if (obd->obd_nid_hash) {
486 cfs_hash_putref(obd->obd_nid_hash);
487 obd->obd_nid_hash = NULL;
489 if (obd->obd_nid_stats_hash) {
490 cfs_hash_putref(obd->obd_nid_stats_hash);
491 obd->obd_nid_stats_hash = NULL;
493 obd->obd_starting = 0;
494 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
498 /** We have finished using this obd and are ready to destroy it.
499 * There can be no more references to this obd.
501 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
505 if (obd->obd_set_up) {
506 CERROR("OBD device %d still set up\n", obd->obd_minor);
510 cfs_spin_lock(&obd->obd_dev_lock);
511 if (!obd->obd_attached) {
512 cfs_spin_unlock(&obd->obd_dev_lock);
513 CERROR("OBD device %d not attached\n", obd->obd_minor);
516 obd->obd_attached = 0;
517 cfs_spin_unlock(&obd->obd_dev_lock);
519 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
520 obd->obd_name, obd->obd_uuid.uuid);
522 class_decref(obd, "attach", obd);
524 /* not strictly necessary, but cleans up eagerly */
525 obd_zombie_impexp_cull();
530 /** Start shutting down the obd. There may be in-progess ops when
531 * this is called. We tell them to start shutting down with a call
532 * to class_disconnect_exports().
534 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
540 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
542 if (!obd->obd_set_up) {
543 CERROR("Device %d not setup\n", obd->obd_minor);
547 cfs_spin_lock(&obd->obd_dev_lock);
548 if (obd->obd_stopping) {
549 cfs_spin_unlock(&obd->obd_dev_lock);
550 CERROR("OBD %d already stopping\n", obd->obd_minor);
553 /* Leave this on forever */
554 obd->obd_stopping = 1;
555 cfs_spin_unlock(&obd->obd_dev_lock);
557 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
558 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
564 LCONSOLE_WARN("Failing over %s\n",
567 obd->obd_no_transno = 1;
568 obd->obd_no_recov = 1;
569 if (OBP(obd, iocontrol)) {
570 obd_iocontrol(OBD_IOC_SYNC,
571 obd->obd_self_export,
576 CERROR("Unrecognised flag '%c'\n", *flag);
580 LASSERT(obd->obd_self_export);
582 /* The three references that should be remaining are the
583 * obd_self_export and the attach and setup references. */
584 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
585 /* refcounf - 3 might be the number of real exports
586 (excluding self export). But class_incref is called
587 by other things as well, so don't count on it. */
588 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
589 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
590 dump_exports(obd, 0);
591 class_disconnect_exports(obd);
594 /* destroy an uuid-export hash body */
595 if (obd->obd_uuid_hash) {
596 cfs_hash_putref(obd->obd_uuid_hash);
597 obd->obd_uuid_hash = NULL;
600 /* destroy a nid-export hash body */
601 if (obd->obd_nid_hash) {
602 cfs_hash_putref(obd->obd_nid_hash);
603 obd->obd_nid_hash = NULL;
606 /* destroy a nid-stats hash body */
607 if (obd->obd_nid_stats_hash) {
608 cfs_hash_putref(obd->obd_nid_stats_hash);
609 obd->obd_nid_stats_hash = NULL;
612 /* Precleanup, we must make sure all exports get destroyed. */
613 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
615 CERROR("Precleanup %s returned %d\n",
617 class_decref(obd, "setup", obd);
622 struct obd_device *class_incref(struct obd_device *obd,
623 const char *scope, const void *source)
625 lu_ref_add_atomic(&obd->obd_reference, scope, source);
626 cfs_atomic_inc(&obd->obd_refcount);
627 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
628 cfs_atomic_read(&obd->obd_refcount));
633 void class_decref(struct obd_device *obd, const char *scope, const void *source)
638 refs = cfs_atomic_dec_return(&obd->obd_refcount);
639 lu_ref_del(&obd->obd_reference, scope, source);
641 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
643 if ((refs == 1) && obd->obd_stopping) {
644 /* All exports have been destroyed; there should
645 be no more in-progress ops by this point.*/
647 cfs_spin_lock(&obd->obd_self_export->exp_lock);
648 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
649 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
651 /* note that we'll recurse into class_decref again */
652 class_unlink_export(obd->obd_self_export);
657 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
658 obd->obd_name, obd->obd_uuid.uuid);
659 LASSERT(!obd->obd_attached);
660 if (obd->obd_stopping) {
661 /* If we're not stopping, we were never set up */
662 err = obd_cleanup(obd);
664 CERROR("Cleanup %s returned %d\n",
667 if (OBP(obd, detach)) {
668 err = OBP(obd, detach)(obd);
670 CERROR("Detach returned %d\n", err);
672 class_release_dev(obd);
676 /** Add a failover nid location.
677 * Client obd types contact server obd types using this nid list.
679 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
681 struct obd_import *imp;
682 struct obd_uuid uuid;
686 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
687 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
688 CERROR("invalid conn_uuid\n");
691 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
692 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
693 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
694 CERROR("can't add connection on non-client dev\n");
698 imp = obd->u.cli.cl_import;
700 CERROR("try to add conn on immature client dev\n");
704 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
705 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
710 /** Remove a failover nid location.
712 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
714 struct obd_import *imp;
715 struct obd_uuid uuid;
719 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
720 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
721 CERROR("invalid conn_uuid\n");
724 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
725 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
726 CERROR("can't del connection on non-client dev\n");
730 imp = obd->u.cli.cl_import;
732 CERROR("try to del conn on immature client dev\n");
736 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
737 rc = obd_del_conn(imp, &uuid);
742 CFS_LIST_HEAD(lustre_profile_list);
744 struct lustre_profile *class_get_profile(const char * prof)
746 struct lustre_profile *lprof;
749 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
750 if (!strcmp(lprof->lp_profile, prof)) {
757 /** Create a named "profile".
758 * This defines the mdc and osc names to use for a client.
759 * This also is used to define the lov to be used by a mdt.
761 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
762 int mdclen, char *mdc)
764 struct lustre_profile *lprof;
768 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
770 OBD_ALLOC(lprof, sizeof(*lprof));
773 CFS_INIT_LIST_HEAD(&lprof->lp_list);
775 LASSERT(proflen == (strlen(prof) + 1));
776 OBD_ALLOC(lprof->lp_profile, proflen);
777 if (lprof->lp_profile == NULL)
778 GOTO(out, err = -ENOMEM);
779 memcpy(lprof->lp_profile, prof, proflen);
781 LASSERT(osclen == (strlen(osc) + 1));
782 OBD_ALLOC(lprof->lp_dt, osclen);
783 if (lprof->lp_dt == NULL)
784 GOTO(out, err = -ENOMEM);
785 memcpy(lprof->lp_dt, osc, osclen);
788 LASSERT(mdclen == (strlen(mdc) + 1));
789 OBD_ALLOC(lprof->lp_md, mdclen);
790 if (lprof->lp_md == NULL)
791 GOTO(out, err = -ENOMEM);
792 memcpy(lprof->lp_md, mdc, mdclen);
795 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
800 OBD_FREE(lprof->lp_md, mdclen);
802 OBD_FREE(lprof->lp_dt, osclen);
803 if (lprof->lp_profile)
804 OBD_FREE(lprof->lp_profile, proflen);
805 OBD_FREE(lprof, sizeof(*lprof));
809 void class_del_profile(const char *prof)
811 struct lustre_profile *lprof;
814 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
816 lprof = class_get_profile(prof);
818 cfs_list_del(&lprof->lp_list);
819 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
820 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
822 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
823 OBD_FREE(lprof, sizeof *lprof);
829 void class_del_profiles(void)
831 struct lustre_profile *lprof, *n;
834 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
835 cfs_list_del(&lprof->lp_list);
836 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
837 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
839 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
840 OBD_FREE(lprof, sizeof *lprof);
845 static int class_set_global(char *ptr, int val) {
848 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
850 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
852 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
854 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
855 at_early_margin = val;
856 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
861 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
867 /* We can't call ll_process_config directly because it lives in a module that
868 must be loaded after this one. */
869 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
871 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
873 client_process_config = cpc;
875 EXPORT_SYMBOL(lustre_register_client_process_config);
877 /** Process configuration commands given in lustre_cfg form.
878 * These may come from direct calls (e.g. class_manual_cleanup)
879 * or processing the config llog, or ioctl from lctl.
881 int class_process_config(struct lustre_cfg *lcfg)
883 struct obd_device *obd;
886 LASSERT(lcfg && !IS_ERR(lcfg));
887 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
889 /* Commands that don't need a device */
890 switch(lcfg->lcfg_command) {
892 err = class_attach(lcfg);
895 case LCFG_ADD_UUID: {
896 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
897 " (%s)\n", lustre_cfg_string(lcfg, 1),
898 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
900 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
903 case LCFG_DEL_UUID: {
904 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
905 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
906 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
908 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
911 case LCFG_MOUNTOPT: {
912 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
913 lustre_cfg_string(lcfg, 1),
914 lustre_cfg_string(lcfg, 2),
915 lustre_cfg_string(lcfg, 3));
916 /* set these mount options somewhere, so ll_fill_super
918 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
919 lustre_cfg_string(lcfg, 1),
920 LUSTRE_CFG_BUFLEN(lcfg, 2),
921 lustre_cfg_string(lcfg, 2),
922 LUSTRE_CFG_BUFLEN(lcfg, 3),
923 lustre_cfg_string(lcfg, 3));
926 case LCFG_DEL_MOUNTOPT: {
927 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
928 lustre_cfg_string(lcfg, 1));
929 class_del_profile(lustre_cfg_string(lcfg, 1));
932 case LCFG_SET_TIMEOUT: {
933 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
934 obd_timeout, lcfg->lcfg_num);
935 obd_timeout = max(lcfg->lcfg_num, 1U);
938 case LCFG_SET_LDLM_TIMEOUT: {
939 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
940 ldlm_timeout, lcfg->lcfg_num);
941 ldlm_timeout = max(lcfg->lcfg_num, 1U);
942 if (ldlm_timeout >= obd_timeout)
943 ldlm_timeout = max(obd_timeout / 3, 1U);
947 case LCFG_SET_UPCALL: {
948 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
949 /* COMPAT_146 Don't fail on old configs */
953 struct cfg_marker *marker;
954 marker = lustre_cfg_buf(lcfg, 1);
955 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
956 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
961 /* llite has no obd */
962 if ((class_match_param(lustre_cfg_string(lcfg, 1),
963 PARAM_LLITE, 0) == 0) &&
964 client_process_config) {
965 err = (*client_process_config)(lcfg);
967 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
968 PARAM_SYS, &tmp) == 0)) {
969 /* Global param settings */
970 err = class_set_global(tmp, lcfg->lcfg_num);
971 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
972 unknown globals would cause config to fail */
974 CWARN("Ignoring unknown param %s\n", tmp);
983 /* Commands that require a device */
984 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
986 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
987 CERROR("this lcfg command requires a device name\n");
989 CERROR("no device for: %s\n",
990 lustre_cfg_string(lcfg, 0));
992 GOTO(out, err = -EINVAL);
995 switch(lcfg->lcfg_command) {
997 err = class_setup(obd, lcfg);
1001 err = class_detach(obd, lcfg);
1004 case LCFG_CLEANUP: {
1005 err = class_cleanup(obd, lcfg);
1008 case LCFG_ADD_CONN: {
1009 err = class_add_conn(obd, lcfg);
1012 case LCFG_DEL_CONN: {
1013 err = class_del_conn(obd, lcfg);
1016 case LCFG_POOL_NEW: {
1017 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1021 case LCFG_POOL_ADD: {
1022 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1023 lustre_cfg_string(lcfg, 3));
1027 case LCFG_POOL_REM: {
1028 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1029 lustre_cfg_string(lcfg, 3));
1033 case LCFG_POOL_DEL: {
1034 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1039 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1045 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1046 CWARN("Ignoring error %d on optional command %#x\n", err,
1047 lcfg->lcfg_command);
1053 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1054 struct lustre_cfg *lcfg, void *data)
1057 struct lprocfs_vars *var;
1059 int i, keylen, vallen;
1060 int matched = 0, j = 0;
1065 if (lcfg->lcfg_command != LCFG_PARAM) {
1066 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1070 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1071 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1072 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1073 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1074 key = lustre_cfg_buf(lcfg, i);
1075 /* Strip off prefix */
1076 class_match_param(key, prefix, &key);
1077 sval = strchr(key, '=');
1078 if (!sval || (*(sval + 1) == 0)) {
1079 CERROR("Can't parse param %s (missing '=')\n", key);
1080 /* rc = -EINVAL; continue parsing other params */
1083 keylen = sval - key;
1085 vallen = strlen(sval);
1088 /* Search proc entries */
1089 while (lvars[j].name) {
1091 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1092 keylen == strlen(var->name)) {
1095 if (var->write_fptr) {
1099 rc = (var->write_fptr)(NULL, sval,
1108 /* If the prefix doesn't match, return error so we
1109 can pass it down the stack */
1110 if (strnchr(key, keylen, '.'))
1112 CERROR("%s: unknown param %s\n",
1113 (char *)lustre_cfg_string(lcfg, 0), key);
1114 /* rc = -EINVAL; continue parsing other params */
1116 } else if (rc < 0) {
1117 CERROR("writing proc entry %s err %d\n",
1121 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1122 lustre_cfg_string(lcfg, 0),
1123 (int)strlen(prefix) - 1, prefix,
1124 (int)(sval - key - 1), key, sval);
1134 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1135 /* Don't throw config error */
1140 int class_config_dump_handler(struct llog_handle * handle,
1141 struct llog_rec_hdr *rec, void *data);
1144 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1146 #define lustre_check_exclusion(a,b) 0
1149 /** Parse a configuration llog, doing various manipulations on them
1150 * for various reasons, (modifications for compatibility, skip obsolete
1151 * records, change uuids, etc), then class_process_config() resulting
1154 static int class_config_llog_handler(struct llog_handle * handle,
1155 struct llog_rec_hdr *rec, void *data)
1157 struct config_llog_instance *clli = data;
1158 int cfg_len = rec->lrh_len;
1159 char *cfg_buf = (char*) (rec + 1);
1163 //class_config_dump_handler(handle, rec, data);
1165 switch (rec->lrh_type) {
1167 struct lustre_cfg *lcfg, *lcfg_new;
1168 struct lustre_cfg_bufs bufs;
1169 char *inst_name = NULL;
1171 int inst = 0, swab = 0;
1173 lcfg = (struct lustre_cfg *)cfg_buf;
1174 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1175 lustre_swab_lustre_cfg(lcfg);
1179 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1183 /* Figure out config state info */
1184 if (lcfg->lcfg_command == LCFG_MARKER) {
1185 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1186 lustre_swab_cfg_marker(marker, swab,
1187 LUSTRE_CFG_BUFLEN(lcfg, 1));
1188 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1189 clli->cfg_flags, marker->cm_flags);
1190 if (marker->cm_flags & CM_START) {
1191 /* all previous flags off */
1192 clli->cfg_flags = CFG_F_MARKER;
1193 if (marker->cm_flags & CM_SKIP) {
1194 clli->cfg_flags |= CFG_F_SKIP;
1195 CDEBUG(D_CONFIG, "SKIP #%d\n",
1197 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1199 lustre_check_exclusion(clli->cfg_sb,
1200 marker->cm_tgtname))) {
1201 clli->cfg_flags |= CFG_F_EXCLUDE;
1202 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1205 } else if (marker->cm_flags & CM_END) {
1206 clli->cfg_flags = 0;
1209 /* A config command without a start marker before it is
1210 illegal (post 146) */
1211 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1212 !(clli->cfg_flags & CFG_F_MARKER) &&
1213 (lcfg->lcfg_command != LCFG_MARKER)) {
1214 CWARN("Config not inside markers, ignoring! "
1215 "(inst: %s, uuid: %s, flags: %#x)\n",
1216 clli->cfg_instance ? clli->cfg_instance : "<null>",
1217 clli->cfg_uuid.uuid, clli->cfg_flags);
1218 clli->cfg_flags |= CFG_F_SKIP;
1220 if (clli->cfg_flags & CFG_F_SKIP) {
1221 CDEBUG(D_CONFIG, "skipping %#x\n",
1224 /* No processing! */
1229 * For interoperability between 1.8 and 2.0,
1230 * rename "mds" obd device type to "mdt".
1233 char *typename = lustre_cfg_string(lcfg, 1);
1234 char *index = lustre_cfg_string(lcfg, 2);
1236 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1237 strcmp(typename, "mds") == 0)) {
1238 CWARN("For 1.8 interoperability, rename obd "
1239 "type from mds to mdt\n");
1242 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1243 strcmp(index, "type") == 0)) {
1244 CDEBUG(D_INFO, "For 1.8 interoperability, "
1245 "set this index to '0'\n");
1251 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1252 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1253 /* Add inactive instead */
1254 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1256 lustre_cfg_bufs_init(&bufs, lcfg);
1258 if (clli && clli->cfg_instance &&
1259 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1261 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1262 strlen(clli->cfg_instance) + 1;
1263 OBD_ALLOC(inst_name, inst_len);
1264 if (inst_name == NULL)
1265 GOTO(out, rc = -ENOMEM);
1266 sprintf(inst_name, "%s-%s",
1267 lustre_cfg_string(lcfg, 0),
1268 clli->cfg_instance);
1269 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1270 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1271 lcfg->lcfg_command, inst_name);
1274 /* we override the llog's uuid for clients, to insure they
1276 if (clli && clli->cfg_instance &&
1277 lcfg->lcfg_command == LCFG_ATTACH) {
1278 lustre_cfg_bufs_set_string(&bufs, 2,
1279 clli->cfg_uuid.uuid);
1282 * sptlrpc config record, we expect 2 data segments:
1283 * [0]: fs_name/target_name,
1285 * moving them to index [1] and [2], and insert MGC's
1286 * obdname at index [0].
1288 if (clli && clli->cfg_instance == NULL &&
1289 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1290 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1291 bufs.lcfg_buflen[1]);
1292 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1293 bufs.lcfg_buflen[0]);
1294 lustre_cfg_bufs_set_string(&bufs, 0,
1298 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1300 lcfg_new->lcfg_num = lcfg->lcfg_num;
1301 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1303 /* XXX Hack to try to remain binary compatible with
1304 * pre-newconfig logs */
1305 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1306 (lcfg->lcfg_nid >> 32) == 0) {
1307 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1309 lcfg_new->lcfg_nid =
1310 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1311 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1312 lcfg->lcfg_nal, addr,
1313 libcfs_nid2str(lcfg_new->lcfg_nid));
1315 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1318 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1320 rc = class_process_config(lcfg_new);
1321 lustre_cfg_free(lcfg_new);
1324 OBD_FREE(inst_name, inst_len);
1328 CERROR("Unknown llog record type %#x encountered\n",
1334 CERROR("Err %d on cfg command:\n", rc);
1335 class_config_dump_handler(handle, rec, data);
1340 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1341 struct config_llog_instance *cfg)
1343 struct llog_process_cat_data cd = {0, 0};
1344 struct llog_handle *llh;
1348 CDEBUG(D_INFO, "looking up llog %s\n", name);
1349 rc = llog_create(ctxt, &llh, NULL, name);
1353 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1355 GOTO(parse_out, rc);
1357 /* continue processing from where we last stopped to end-of-log */
1359 cd.lpcd_first_idx = cfg->cfg_last_idx;
1360 cd.lpcd_last_idx = 0;
1362 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1364 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1365 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1368 cfg->cfg_last_idx = cd.lpcd_last_idx;
1371 rc2 = llog_close(llh);
1378 int class_config_dump_handler(struct llog_handle * handle,
1379 struct llog_rec_hdr *rec, void *data)
1381 int cfg_len = rec->lrh_len;
1382 char *cfg_buf = (char*) (rec + 1);
1383 char *outstr, *ptr, *end;
1387 OBD_ALLOC(outstr, 256);
1393 if (rec->lrh_type == OBD_CFG_REC) {
1394 struct lustre_cfg *lcfg;
1397 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1400 lcfg = (struct lustre_cfg *)cfg_buf;
1402 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1403 lcfg->lcfg_command);
1404 if (lcfg->lcfg_flags) {
1405 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1408 if (lcfg->lcfg_num) {
1409 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1412 if (lcfg->lcfg_nid) {
1413 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1414 libcfs_nid2str(lcfg->lcfg_nid),
1417 if (lcfg->lcfg_command == LCFG_MARKER) {
1418 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1419 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1420 marker->cm_step, marker->cm_flags,
1421 marker->cm_tgtname, marker->cm_comment);
1423 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1424 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1425 lustre_cfg_string(lcfg, i));
1428 LCONSOLE(D_WARNING, " %s\n", outstr);
1430 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1434 OBD_FREE(outstr, 256);
1438 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1439 struct config_llog_instance *cfg)
1441 struct llog_handle *llh;
1445 LCONSOLE_INFO("Dumping config log %s\n", name);
1447 rc = llog_create(ctxt, &llh, NULL, name);
1451 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1453 GOTO(parse_out, rc);
1455 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1457 rc2 = llog_close(llh);
1461 LCONSOLE_INFO("End config log %s\n", name);
1466 /** Call class_cleanup and class_detach.
1467 * "Manual" only in the sense that we're faking lcfg commands.
1469 int class_manual_cleanup(struct obd_device *obd)
1472 struct lustre_cfg *lcfg;
1473 struct lustre_cfg_bufs bufs;
1478 CERROR("empty cleanup\n");
1487 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1488 obd->obd_name, flags);
1490 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1491 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1492 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1496 rc = class_process_config(lcfg);
1498 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1502 /* the lcfg is almost the same for both ops */
1503 lcfg->lcfg_command = LCFG_DETACH;
1504 rc = class_process_config(lcfg);
1506 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1508 lustre_cfg_free(lcfg);
1513 * uuid<->export lustre hash operations
1517 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1519 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1520 sizeof(((struct obd_uuid *)key)->uuid), mask);
1524 uuid_key(cfs_hlist_node_t *hnode)
1526 struct obd_export *exp;
1528 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1530 return &exp->exp_client_uuid;
1534 * NOTE: It is impossible to find an export that is in failed
1535 * state with this function
1538 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1540 struct obd_export *exp;
1543 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1545 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1550 uuid_export_object(cfs_hlist_node_t *hnode)
1552 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1556 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1558 struct obd_export *exp;
1560 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1561 class_export_get(exp);
1565 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1567 struct obd_export *exp;
1569 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1570 class_export_put(exp);
1573 static cfs_hash_ops_t uuid_hash_ops = {
1574 .hs_hash = uuid_hash,
1576 .hs_keycmp = uuid_keycmp,
1577 .hs_object = uuid_export_object,
1578 .hs_get = uuid_export_get,
1579 .hs_put_locked = uuid_export_put_locked,
1584 * nid<->export hash operations
1588 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1590 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1594 nid_key(cfs_hlist_node_t *hnode)
1596 struct obd_export *exp;
1598 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1600 RETURN(&exp->exp_connection->c_peer.nid);
1604 * NOTE: It is impossible to find an export that is in failed
1605 * state with this function
1608 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1610 struct obd_export *exp;
1613 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1615 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1620 nid_export_object(cfs_hlist_node_t *hnode)
1622 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1626 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1628 struct obd_export *exp;
1630 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1631 class_export_get(exp);
1635 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1637 struct obd_export *exp;
1639 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1640 class_export_put(exp);
1643 static cfs_hash_ops_t nid_hash_ops = {
1644 .hs_hash = nid_hash,
1646 .hs_keycmp = nid_kepcmp,
1647 .hs_object = nid_export_object,
1648 .hs_get = nid_export_get,
1649 .hs_put_locked = nid_export_put_locked,
1654 * nid<->nidstats hash operations
1658 nidstats_key(cfs_hlist_node_t *hnode)
1660 struct nid_stat *ns;
1662 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1668 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1670 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1674 nidstats_object(cfs_hlist_node_t *hnode)
1676 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1680 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1682 struct nid_stat *ns;
1684 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1689 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1691 struct nid_stat *ns;
1693 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1697 static cfs_hash_ops_t nid_stat_hash_ops = {
1698 .hs_hash = nid_hash,
1699 .hs_key = nidstats_key,
1700 .hs_keycmp = nidstats_keycmp,
1701 .hs_object = nidstats_object,
1702 .hs_get = nidstats_get,
1703 .hs_put_locked = nidstats_put_locked,