4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * Author: Isaac Huang <isaac@clusterfs.com>
40 * 2012-05-13: Liang Zhen <liang@whamcloud.com>
41 * - percpt data for service to improve smp performance
45 #define DEBUG_SUBSYSTEM S_LNET
57 struct smoketest_rpc {
58 spinlock_t rpc_glock; /* global lock */
59 srpc_service_t *rpc_services[SRPC_SERVICE_MAX_ID + 1];
60 lnet_handle_eq_t rpc_lnet_eq; /* _the_ LNet event queue */
61 srpc_state_t rpc_state;
62 srpc_counters_t rpc_counters;
63 __u64 rpc_matchbits; /* matchbits counter */
67 srpc_serv_portal(int svc_id)
69 return svc_id < SRPC_FRAMEWORK_SERVICE_MAX_ID ?
70 SRPC_FRAMEWORK_REQUEST_PORTAL : SRPC_REQUEST_PORTAL;
74 int srpc_handle_rpc (swi_workitem_t *wi);
76 void srpc_get_counters (srpc_counters_t *cnt)
78 spin_lock(&srpc_data.rpc_glock);
79 *cnt = srpc_data.rpc_counters;
80 spin_unlock(&srpc_data.rpc_glock);
83 void srpc_set_counters (const srpc_counters_t *cnt)
85 spin_lock(&srpc_data.rpc_glock);
86 srpc_data.rpc_counters = *cnt;
87 spin_unlock(&srpc_data.rpc_glock);
91 srpc_add_bulk_page(srpc_bulk_t *bk, cfs_page_t *pg, int i, int nob)
93 nob = min(nob, (int)CFS_PAGE_SIZE);
96 LASSERT(i >= 0 && i < bk->bk_niov);
99 bk->bk_iovs[i].kiov_offset = 0;
100 bk->bk_iovs[i].kiov_page = pg;
101 bk->bk_iovs[i].kiov_len = nob;
103 LASSERT(bk->bk_pages != NULL);
105 bk->bk_pages[i] = pg;
106 bk->bk_iovs[i].iov_len = nob;
107 bk->bk_iovs[i].iov_base = cfs_page_address(pg);
113 srpc_free_bulk (srpc_bulk_t *bk)
118 LASSERT (bk != NULL);
120 LASSERT (bk->bk_pages != NULL);
123 for (i = 0; i < bk->bk_niov; i++) {
125 pg = bk->bk_iovs[i].kiov_page;
127 pg = bk->bk_pages[i];
129 if (pg == NULL) break;
135 LIBCFS_FREE(bk->bk_pages, sizeof(cfs_page_t *) * bk->bk_niov);
137 LIBCFS_FREE(bk, offsetof(srpc_bulk_t, bk_iovs[bk->bk_niov]));
142 srpc_alloc_bulk(int cpt, unsigned bulk_npg, unsigned bulk_len, int sink)
148 LASSERT(bulk_npg > 0 && bulk_npg <= LNET_MAX_IOV);
150 LIBCFS_CPT_ALLOC(bk, lnet_cpt_table(), cpt,
151 offsetof(srpc_bulk_t, bk_iovs[bulk_npg]));
153 CERROR("Can't allocate descriptor for %d pages\n", bulk_npg);
157 memset(bk, 0, offsetof(srpc_bulk_t, bk_iovs[bulk_npg]));
159 bk->bk_len = bulk_len;
160 bk->bk_niov = bulk_npg;
162 LIBCFS_CPT_ALLOC(pages, lnet_cpt_table(), cpt,
163 sizeof(cfs_page_t *) * bulk_npg);
165 LIBCFS_FREE(bk, offsetof(srpc_bulk_t, bk_iovs[bulk_npg]));
166 CERROR("Can't allocate page array for %d pages\n", bulk_npg);
170 memset(pages, 0, sizeof(cfs_page_t *) * bulk_npg);
171 bk->bk_pages = pages;
176 for (i = 0; i < bulk_npg; i++) {
180 pg = cfs_page_cpt_alloc(lnet_cpt_table(), cpt, CFS_ALLOC_STD);
182 CERROR("Can't allocate page %d of %d\n", i, bulk_npg);
187 nob = srpc_add_bulk_page(bk, pg, i, bulk_len);
199 spin_lock(&srpc_data.rpc_glock);
200 id = srpc_data.rpc_matchbits++;
201 spin_unlock(&srpc_data.rpc_glock);
206 srpc_init_server_rpc(struct srpc_server_rpc *rpc,
207 struct srpc_service_cd *scd,
208 struct srpc_buffer *buffer)
210 memset(rpc, 0, sizeof(*rpc));
211 swi_init_workitem(&rpc->srpc_wi, rpc, srpc_handle_rpc,
212 srpc_serv_is_framework(scd->scd_svc) ?
213 lst_sched_serial : lst_sched_test[scd->scd_cpt]);
215 rpc->srpc_ev.ev_fired = 1; /* no event expected now */
218 rpc->srpc_reqstbuf = buffer;
219 rpc->srpc_peer = buffer->buf_peer;
220 rpc->srpc_self = buffer->buf_self;
221 LNetInvalidateHandle(&rpc->srpc_replymdh);
225 srpc_service_fini(struct srpc_service *svc)
227 struct srpc_service_cd *scd;
228 struct srpc_server_rpc *rpc;
229 struct srpc_buffer *buf;
233 if (svc->sv_cpt_data == NULL)
236 cfs_percpt_for_each(scd, i, svc->sv_cpt_data) {
238 if (!cfs_list_empty(&scd->scd_buf_posted))
239 q = &scd->scd_buf_posted;
240 else if (!cfs_list_empty(&scd->scd_buf_blocked))
241 q = &scd->scd_buf_blocked;
245 while (!cfs_list_empty(q)) {
246 buf = cfs_list_entry(q->next,
249 cfs_list_del(&buf->buf_list);
250 LIBCFS_FREE(buf, sizeof(*buf));
254 LASSERT(cfs_list_empty(&scd->scd_rpc_active));
256 while (!cfs_list_empty(&scd->scd_rpc_free)) {
257 rpc = cfs_list_entry(scd->scd_rpc_free.next,
258 struct srpc_server_rpc,
260 cfs_list_del(&rpc->srpc_list);
261 LIBCFS_FREE(rpc, sizeof(*rpc));
265 cfs_percpt_free(svc->sv_cpt_data);
266 svc->sv_cpt_data = NULL;
270 srpc_service_nrpcs(struct srpc_service *svc)
272 int nrpcs = svc->sv_wi_total / svc->sv_ncpts;
274 return srpc_serv_is_framework(svc) ?
275 max(nrpcs, SFW_FRWK_WI_MIN) : max(nrpcs, SFW_TEST_WI_MIN);
278 int srpc_add_buffer(struct swi_workitem *wi);
281 srpc_service_init(struct srpc_service *svc)
283 struct srpc_service_cd *scd;
284 struct srpc_server_rpc *rpc;
289 svc->sv_shuttingdown = 0;
291 svc->sv_cpt_data = cfs_percpt_alloc(lnet_cpt_table(),
292 sizeof(struct srpc_service_cd));
293 if (svc->sv_cpt_data == NULL)
296 svc->sv_ncpts = srpc_serv_is_framework(svc) ?
297 1 : cfs_cpt_number(lnet_cpt_table());
298 nrpcs = srpc_service_nrpcs(svc);
300 cfs_percpt_for_each(scd, i, svc->sv_cpt_data) {
303 spin_lock_init(&scd->scd_lock);
304 CFS_INIT_LIST_HEAD(&scd->scd_rpc_free);
305 CFS_INIT_LIST_HEAD(&scd->scd_rpc_active);
306 CFS_INIT_LIST_HEAD(&scd->scd_buf_posted);
307 CFS_INIT_LIST_HEAD(&scd->scd_buf_blocked);
309 scd->scd_ev.ev_data = scd;
310 scd->scd_ev.ev_type = SRPC_REQUEST_RCVD;
312 /* NB: don't use lst_sched_serial for adding buffer,
313 * see details in srpc_service_add_buffers() */
314 swi_init_workitem(&scd->scd_buf_wi, scd,
315 srpc_add_buffer, lst_sched_test[i]);
317 if (i != 0 && srpc_serv_is_framework(svc)) {
318 /* NB: framework service only needs srpc_service_cd for
319 * one partition, but we allocate for all to make
320 * it easier to implement, it will waste a little
321 * memory but nobody should care about this */
325 for (j = 0; j < nrpcs; j++) {
326 LIBCFS_CPT_ALLOC(rpc, lnet_cpt_table(),
329 srpc_service_fini(svc);
332 cfs_list_add(&rpc->srpc_list, &scd->scd_rpc_free);
340 srpc_add_service(struct srpc_service *sv)
344 LASSERT(0 <= id && id <= SRPC_SERVICE_MAX_ID);
346 if (srpc_service_init(sv) != 0)
349 spin_lock(&srpc_data.rpc_glock);
351 LASSERT(srpc_data.rpc_state == SRPC_STATE_RUNNING);
353 if (srpc_data.rpc_services[id] != NULL) {
354 spin_unlock(&srpc_data.rpc_glock);
358 srpc_data.rpc_services[id] = sv;
359 spin_unlock(&srpc_data.rpc_glock);
361 CDEBUG(D_NET, "Adding service: id %d, name %s\n", id, sv->sv_name);
365 srpc_service_fini(sv);
370 srpc_remove_service (srpc_service_t *sv)
374 spin_lock(&srpc_data.rpc_glock);
376 if (srpc_data.rpc_services[id] != sv) {
377 spin_unlock(&srpc_data.rpc_glock);
381 srpc_data.rpc_services[id] = NULL;
382 spin_unlock(&srpc_data.rpc_glock);
387 srpc_post_passive_rdma(int portal, int local, __u64 matchbits, void *buf,
388 int len, int options, lnet_process_id_t peer,
389 lnet_handle_md_t *mdh, srpc_event_t *ev)
393 lnet_handle_me_t meh;
395 rc = LNetMEAttach(portal, peer, matchbits, 0, LNET_UNLINK,
396 local ? LNET_INS_LOCAL : LNET_INS_AFTER, &meh);
398 CERROR ("LNetMEAttach failed: %d\n", rc);
399 LASSERT (rc == -ENOMEM);
407 md.options = options;
408 md.eq_handle = srpc_data.rpc_lnet_eq;
410 rc = LNetMDAttach(meh, md, LNET_UNLINK, mdh);
412 CERROR ("LNetMDAttach failed: %d\n", rc);
413 LASSERT (rc == -ENOMEM);
415 rc = LNetMEUnlink(meh);
421 "Posted passive RDMA: peer %s, portal %d, matchbits "LPX64"\n",
422 libcfs_id2str(peer), portal, matchbits);
427 srpc_post_active_rdma(int portal, __u64 matchbits, void *buf, int len,
428 int options, lnet_process_id_t peer, lnet_nid_t self,
429 lnet_handle_md_t *mdh, srpc_event_t *ev)
437 md.eq_handle = srpc_data.rpc_lnet_eq;
438 md.threshold = ((options & LNET_MD_OP_GET) != 0) ? 2 : 1;
439 md.options = options & ~(LNET_MD_OP_PUT | LNET_MD_OP_GET);
441 rc = LNetMDBind(md, LNET_UNLINK, mdh);
443 CERROR ("LNetMDBind failed: %d\n", rc);
444 LASSERT (rc == -ENOMEM);
448 /* this is kind of an abuse of the LNET_MD_OP_{PUT,GET} options.
449 * they're only meaningful for MDs attached to an ME (i.e. passive
451 if ((options & LNET_MD_OP_PUT) != 0) {
452 rc = LNetPut(self, *mdh, LNET_NOACK_REQ, peer,
453 portal, matchbits, 0, 0);
455 LASSERT ((options & LNET_MD_OP_GET) != 0);
457 rc = LNetGet(self, *mdh, peer, portal, matchbits, 0);
461 CERROR ("LNet%s(%s, %d, "LPD64") failed: %d\n",
462 ((options & LNET_MD_OP_PUT) != 0) ? "Put" : "Get",
463 libcfs_id2str(peer), portal, matchbits, rc);
465 /* The forthcoming unlink event will complete this operation
466 * with failure, so fall through and return success here.
468 rc = LNetMDUnlink(*mdh);
472 "Posted active RDMA: peer %s, portal %u, matchbits "LPX64"\n",
473 libcfs_id2str(peer), portal, matchbits);
479 srpc_post_active_rqtbuf(lnet_process_id_t peer, int service, void *buf,
480 int len, lnet_handle_md_t *mdh, srpc_event_t *ev)
482 return srpc_post_active_rdma(srpc_serv_portal(service), service,
483 buf, len, LNET_MD_OP_PUT, peer,
484 LNET_NID_ANY, mdh, ev);
488 srpc_post_passive_rqtbuf(int service, int local, void *buf, int len,
489 lnet_handle_md_t *mdh, srpc_event_t *ev)
491 lnet_process_id_t any = {0};
493 any.nid = LNET_NID_ANY;
494 any.pid = LNET_PID_ANY;
496 return srpc_post_passive_rdma(srpc_serv_portal(service),
497 local, service, buf, len,
498 LNET_MD_OP_PUT, any, mdh, ev);
502 srpc_service_post_buffer(struct srpc_service_cd *scd, struct srpc_buffer *buf)
504 struct srpc_service *sv = scd->scd_svc;
505 struct srpc_msg *msg = &buf->buf_msg;
508 LNetInvalidateHandle(&buf->buf_mdh);
509 cfs_list_add(&buf->buf_list, &scd->scd_buf_posted);
510 scd->scd_buf_nposted++;
511 spin_unlock(&scd->scd_lock);
513 rc = srpc_post_passive_rqtbuf(sv->sv_id,
514 !srpc_serv_is_framework(sv),
515 msg, sizeof(*msg), &buf->buf_mdh,
518 /* At this point, a RPC (new or delayed) may have arrived in
519 * msg and its event handler has been called. So we must add
520 * buf to scd_buf_posted _before_ dropping scd_lock */
522 spin_lock(&scd->scd_lock);
525 if (!sv->sv_shuttingdown)
528 spin_unlock(&scd->scd_lock);
529 /* srpc_shutdown_service might have tried to unlink me
530 * when my buf_mdh was still invalid */
531 LNetMDUnlink(buf->buf_mdh);
532 spin_lock(&scd->scd_lock);
536 scd->scd_buf_nposted--;
537 if (sv->sv_shuttingdown)
538 return rc; /* don't allow to change scd_buf_posted */
540 cfs_list_del(&buf->buf_list);
541 spin_unlock(&scd->scd_lock);
543 LIBCFS_FREE(buf, sizeof(*buf));
545 spin_lock(&scd->scd_lock);
550 srpc_add_buffer(struct swi_workitem *wi)
552 struct srpc_service_cd *scd = wi->swi_workitem.wi_data;
553 struct srpc_buffer *buf;
556 /* it's called by workitem scheduler threads, these threads
557 * should have been set CPT affinity, so buffers will be posted
558 * on CPT local list of Portal */
559 spin_lock(&scd->scd_lock);
561 while (scd->scd_buf_adjust > 0 &&
562 !scd->scd_svc->sv_shuttingdown) {
563 scd->scd_buf_adjust--; /* consume it */
564 scd->scd_buf_posting++;
566 spin_unlock(&scd->scd_lock);
568 LIBCFS_ALLOC(buf, sizeof(*buf));
570 CERROR("Failed to add new buf to service: %s\n",
571 scd->scd_svc->sv_name);
572 spin_lock(&scd->scd_lock);
577 spin_lock(&scd->scd_lock);
578 if (scd->scd_svc->sv_shuttingdown) {
579 spin_unlock(&scd->scd_lock);
580 LIBCFS_FREE(buf, sizeof(*buf));
582 spin_lock(&scd->scd_lock);
587 rc = srpc_service_post_buffer(scd, buf);
589 break; /* buf has been freed inside */
591 LASSERT(scd->scd_buf_posting > 0);
592 scd->scd_buf_posting--;
593 scd->scd_buf_total++;
594 scd->scd_buf_low = MAX(2, scd->scd_buf_total / 4);
598 scd->scd_buf_err_stamp = cfs_time_current_sec();
599 scd->scd_buf_err = rc;
601 LASSERT(scd->scd_buf_posting > 0);
602 scd->scd_buf_posting--;
605 spin_unlock(&scd->scd_lock);
610 srpc_service_add_buffers(struct srpc_service *sv, int nbuffer)
612 struct srpc_service_cd *scd;
616 LASSERTF(nbuffer > 0, "nbuffer must be positive: %d\n", nbuffer);
618 cfs_percpt_for_each(scd, i, sv->sv_cpt_data) {
619 spin_lock(&scd->scd_lock);
621 scd->scd_buf_err = 0;
622 scd->scd_buf_err_stamp = 0;
623 scd->scd_buf_posting = 0;
624 scd->scd_buf_adjust = nbuffer;
625 /* start to post buffers */
626 swi_schedule_workitem(&scd->scd_buf_wi);
627 spin_unlock(&scd->scd_lock);
629 /* framework service only post buffer for one partition */
630 if (srpc_serv_is_framework(sv))
634 cfs_percpt_for_each(scd, i, sv->sv_cpt_data) {
635 spin_lock(&scd->scd_lock);
637 * NB: srpc_service_add_buffers() can be called inside
638 * thread context of lst_sched_serial, and we don't normally
639 * allow to sleep inside thread context of WI scheduler
640 * because it will block current scheduler thread from doing
641 * anything else, even worse, it could deadlock if it's
642 * waiting on result from another WI of the same scheduler.
643 * However, it's safe at here because scd_buf_wi is scheduled
644 * by thread in a different WI scheduler (lst_sched_test),
645 * so we don't have any risk of deadlock, though this could
646 * block all WIs pending on lst_sched_serial for a moment
647 * which is not good but not fatal.
649 lst_wait_until(scd->scd_buf_err != 0 ||
650 (scd->scd_buf_adjust == 0 &&
651 scd->scd_buf_posting == 0),
652 scd->scd_lock, "waiting for adding buffer\n");
654 if (scd->scd_buf_err != 0 && rc == 0)
655 rc = scd->scd_buf_err;
657 spin_unlock(&scd->scd_lock);
664 srpc_service_remove_buffers(struct srpc_service *sv, int nbuffer)
666 struct srpc_service_cd *scd;
670 LASSERT(!sv->sv_shuttingdown);
672 cfs_percpt_for_each(scd, i, sv->sv_cpt_data) {
673 spin_lock(&scd->scd_lock);
675 num = scd->scd_buf_total + scd->scd_buf_posting;
676 scd->scd_buf_adjust -= min(nbuffer, num);
678 spin_unlock(&scd->scd_lock);
682 /* returns 1 if sv has finished, otherwise 0 */
684 srpc_finish_service(struct srpc_service *sv)
686 struct srpc_service_cd *scd;
687 struct srpc_server_rpc *rpc;
690 LASSERT(sv->sv_shuttingdown); /* srpc_shutdown_service called */
692 cfs_percpt_for_each(scd, i, sv->sv_cpt_data) {
693 spin_lock(&scd->scd_lock);
694 if (!swi_deschedule_workitem(&scd->scd_buf_wi))
697 if (scd->scd_buf_nposted > 0) {
698 CDEBUG(D_NET, "waiting for %d posted buffers to unlink",
699 scd->scd_buf_nposted);
700 spin_unlock(&scd->scd_lock);
704 if (cfs_list_empty(&scd->scd_rpc_active)) {
705 spin_unlock(&scd->scd_lock);
709 rpc = cfs_list_entry(scd->scd_rpc_active.next,
710 struct srpc_server_rpc, srpc_list);
711 CNETERR("Active RPC %p on shutdown: sv %s, peer %s, "
712 "wi %s scheduled %d running %d, "
713 "ev fired %d type %d status %d lnet %d\n",
714 rpc, sv->sv_name, libcfs_id2str(rpc->srpc_peer),
715 swi_state2str(rpc->srpc_wi.swi_state),
716 rpc->srpc_wi.swi_workitem.wi_scheduled,
717 rpc->srpc_wi.swi_workitem.wi_running,
718 rpc->srpc_ev.ev_fired, rpc->srpc_ev.ev_type,
719 rpc->srpc_ev.ev_status, rpc->srpc_ev.ev_lnet);
720 spin_unlock(&scd->scd_lock);
724 /* no lock needed from now on */
725 srpc_service_fini(sv);
729 /* called with sv->sv_lock held */
731 srpc_service_recycle_buffer(struct srpc_service_cd *scd, srpc_buffer_t *buf)
733 if (!scd->scd_svc->sv_shuttingdown && scd->scd_buf_adjust >= 0) {
734 if (srpc_service_post_buffer(scd, buf) != 0) {
735 CWARN("Failed to post %s buffer\n",
736 scd->scd_svc->sv_name);
741 /* service is shutting down, or we want to recycle some buffers */
742 scd->scd_buf_total--;
744 if (scd->scd_buf_adjust < 0) {
745 scd->scd_buf_adjust++;
746 if (scd->scd_buf_adjust < 0 &&
747 scd->scd_buf_total == 0 && scd->scd_buf_posting == 0) {
749 "Try to recyle %d buffers but nothing left\n",
750 scd->scd_buf_adjust);
751 scd->scd_buf_adjust = 0;
755 spin_unlock(&scd->scd_lock);
756 LIBCFS_FREE(buf, sizeof(*buf));
757 spin_lock(&scd->scd_lock);
761 srpc_abort_service(struct srpc_service *sv)
763 struct srpc_service_cd *scd;
764 struct srpc_server_rpc *rpc;
767 CDEBUG(D_NET, "Aborting service: id %d, name %s\n",
768 sv->sv_id, sv->sv_name);
770 cfs_percpt_for_each(scd, i, sv->sv_cpt_data) {
771 spin_lock(&scd->scd_lock);
773 /* schedule in-flight RPCs to notice the abort, NB:
774 * racing with incoming RPCs; complete fix should make test
775 * RPCs carry session ID in its headers */
776 cfs_list_for_each_entry(rpc, &scd->scd_rpc_active, srpc_list) {
777 rpc->srpc_aborted = 1;
778 swi_schedule_workitem(&rpc->srpc_wi);
781 spin_unlock(&scd->scd_lock);
786 srpc_shutdown_service(srpc_service_t *sv)
788 struct srpc_service_cd *scd;
789 struct srpc_server_rpc *rpc;
793 CDEBUG(D_NET, "Shutting down service: id %d, name %s\n",
794 sv->sv_id, sv->sv_name);
796 cfs_percpt_for_each(scd, i, sv->sv_cpt_data)
797 spin_lock(&scd->scd_lock);
799 sv->sv_shuttingdown = 1; /* i.e. no new active RPC */
801 cfs_percpt_for_each(scd, i, sv->sv_cpt_data)
802 spin_unlock(&scd->scd_lock);
804 cfs_percpt_for_each(scd, i, sv->sv_cpt_data) {
805 spin_lock(&scd->scd_lock);
807 /* schedule in-flight RPCs to notice the shutdown */
808 cfs_list_for_each_entry(rpc, &scd->scd_rpc_active, srpc_list)
809 swi_schedule_workitem(&rpc->srpc_wi);
811 spin_unlock(&scd->scd_lock);
813 /* OK to traverse scd_buf_posted without lock, since no one
814 * touches scd_buf_posted now */
815 cfs_list_for_each_entry(buf, &scd->scd_buf_posted, buf_list)
816 LNetMDUnlink(buf->buf_mdh);
821 srpc_send_request (srpc_client_rpc_t *rpc)
823 srpc_event_t *ev = &rpc->crpc_reqstev;
828 ev->ev_type = SRPC_REQUEST_SENT;
830 rc = srpc_post_active_rqtbuf(rpc->crpc_dest, rpc->crpc_service,
831 &rpc->crpc_reqstmsg, sizeof(srpc_msg_t),
832 &rpc->crpc_reqstmdh, ev);
834 LASSERT (rc == -ENOMEM);
835 ev->ev_fired = 1; /* no more event expected */
841 srpc_prepare_reply (srpc_client_rpc_t *rpc)
843 srpc_event_t *ev = &rpc->crpc_replyev;
844 __u64 *id = &rpc->crpc_reqstmsg.msg_body.reqst.rpyid;
849 ev->ev_type = SRPC_REPLY_RCVD;
851 *id = srpc_next_id();
853 rc = srpc_post_passive_rdma(SRPC_RDMA_PORTAL, 0, *id,
854 &rpc->crpc_replymsg, sizeof(srpc_msg_t),
855 LNET_MD_OP_PUT, rpc->crpc_dest,
856 &rpc->crpc_replymdh, ev);
858 LASSERT (rc == -ENOMEM);
859 ev->ev_fired = 1; /* no more event expected */
865 srpc_prepare_bulk (srpc_client_rpc_t *rpc)
867 srpc_bulk_t *bk = &rpc->crpc_bulk;
868 srpc_event_t *ev = &rpc->crpc_bulkev;
869 __u64 *id = &rpc->crpc_reqstmsg.msg_body.reqst.bulkid;
873 LASSERT (bk->bk_niov <= LNET_MAX_IOV);
875 if (bk->bk_niov == 0) return 0; /* nothing to do */
877 opt = bk->bk_sink ? LNET_MD_OP_PUT : LNET_MD_OP_GET;
881 opt |= LNET_MD_IOVEC;
886 ev->ev_type = SRPC_BULK_REQ_RCVD;
888 *id = srpc_next_id();
890 rc = srpc_post_passive_rdma(SRPC_RDMA_PORTAL, 0, *id,
891 &bk->bk_iovs[0], bk->bk_niov, opt,
892 rpc->crpc_dest, &bk->bk_mdh, ev);
894 LASSERT (rc == -ENOMEM);
895 ev->ev_fired = 1; /* no more event expected */
901 srpc_do_bulk (srpc_server_rpc_t *rpc)
903 srpc_event_t *ev = &rpc->srpc_ev;
904 srpc_bulk_t *bk = rpc->srpc_bulk;
905 __u64 id = rpc->srpc_reqstbuf->buf_msg.msg_body.reqst.bulkid;
909 LASSERT (bk != NULL);
911 opt = bk->bk_sink ? LNET_MD_OP_GET : LNET_MD_OP_PUT;
915 opt |= LNET_MD_IOVEC;
920 ev->ev_type = bk->bk_sink ? SRPC_BULK_GET_RPLD : SRPC_BULK_PUT_SENT;
922 rc = srpc_post_active_rdma(SRPC_RDMA_PORTAL, id,
923 &bk->bk_iovs[0], bk->bk_niov, opt,
924 rpc->srpc_peer, rpc->srpc_self,
927 ev->ev_fired = 1; /* no more event expected */
931 /* only called from srpc_handle_rpc */
933 srpc_server_rpc_done(srpc_server_rpc_t *rpc, int status)
935 struct srpc_service_cd *scd = rpc->srpc_scd;
936 struct srpc_service *sv = scd->scd_svc;
937 srpc_buffer_t *buffer;
939 LASSERT (status != 0 || rpc->srpc_wi.swi_state == SWI_STATE_DONE);
941 rpc->srpc_status = status;
943 CDEBUG_LIMIT (status == 0 ? D_NET : D_NETERROR,
944 "Server RPC %p done: service %s, peer %s, status %s:%d\n",
945 rpc, sv->sv_name, libcfs_id2str(rpc->srpc_peer),
946 swi_state2str(rpc->srpc_wi.swi_state), status);
949 spin_lock(&srpc_data.rpc_glock);
950 srpc_data.rpc_counters.rpcs_dropped++;
951 spin_unlock(&srpc_data.rpc_glock);
954 if (rpc->srpc_done != NULL)
955 (*rpc->srpc_done) (rpc);
956 LASSERT(rpc->srpc_bulk == NULL);
958 spin_lock(&scd->scd_lock);
960 if (rpc->srpc_reqstbuf != NULL) {
961 /* NB might drop sv_lock in srpc_service_recycle_buffer, but
962 * sv won't go away for scd_rpc_active must not be empty */
963 srpc_service_recycle_buffer(scd, rpc->srpc_reqstbuf);
964 rpc->srpc_reqstbuf = NULL;
967 cfs_list_del(&rpc->srpc_list); /* from scd->scd_rpc_active */
970 * No one can schedule me now since:
971 * - I'm not on scd_rpc_active.
972 * - all LNet events have been fired.
973 * Cancel pending schedules and prevent future schedule attempts:
975 LASSERT(rpc->srpc_ev.ev_fired);
976 swi_exit_workitem(&rpc->srpc_wi);
978 if (!sv->sv_shuttingdown && !cfs_list_empty(&scd->scd_buf_blocked)) {
979 buffer = cfs_list_entry(scd->scd_buf_blocked.next,
980 srpc_buffer_t, buf_list);
981 cfs_list_del(&buffer->buf_list);
983 srpc_init_server_rpc(rpc, scd, buffer);
984 cfs_list_add_tail(&rpc->srpc_list, &scd->scd_rpc_active);
985 swi_schedule_workitem(&rpc->srpc_wi);
987 cfs_list_add(&rpc->srpc_list, &scd->scd_rpc_free);
990 spin_unlock(&scd->scd_lock);
994 /* handles an incoming RPC */
996 srpc_handle_rpc(swi_workitem_t *wi)
998 struct srpc_server_rpc *rpc = wi->swi_workitem.wi_data;
999 struct srpc_service_cd *scd = rpc->srpc_scd;
1000 struct srpc_service *sv = scd->scd_svc;
1001 srpc_event_t *ev = &rpc->srpc_ev;
1004 LASSERT(wi == &rpc->srpc_wi);
1006 spin_lock(&scd->scd_lock);
1008 if (sv->sv_shuttingdown || rpc->srpc_aborted) {
1009 spin_unlock(&scd->scd_lock);
1011 if (rpc->srpc_bulk != NULL)
1012 LNetMDUnlink(rpc->srpc_bulk->bk_mdh);
1013 LNetMDUnlink(rpc->srpc_replymdh);
1015 if (ev->ev_fired) { /* no more event, OK to finish */
1016 srpc_server_rpc_done(rpc, -ESHUTDOWN);
1022 spin_unlock(&scd->scd_lock);
1024 switch (wi->swi_state) {
1027 case SWI_STATE_NEWBORN: {
1029 srpc_generic_reply_t *reply;
1031 msg = &rpc->srpc_reqstbuf->buf_msg;
1032 reply = &rpc->srpc_replymsg.msg_body.reply;
1034 if (msg->msg_magic == 0) {
1035 /* moaned already in srpc_lnet_ev_handler */
1036 srpc_server_rpc_done(rpc, EBADMSG);
1040 srpc_unpack_msg_hdr(msg);
1041 if (msg->msg_version != SRPC_MSG_VERSION) {
1042 CWARN("Version mismatch: %u, %u expected, from %s\n",
1043 msg->msg_version, SRPC_MSG_VERSION,
1044 libcfs_id2str(rpc->srpc_peer));
1045 reply->status = EPROTO;
1046 /* drop through and send reply */
1049 rc = (*sv->sv_handler)(rpc);
1050 LASSERT(reply->status == 0 || !rpc->srpc_bulk);
1052 srpc_server_rpc_done(rpc, rc);
1057 wi->swi_state = SWI_STATE_BULK_STARTED;
1059 if (rpc->srpc_bulk != NULL) {
1060 rc = srpc_do_bulk(rpc);
1062 return 0; /* wait for bulk */
1064 LASSERT (ev->ev_fired);
1068 case SWI_STATE_BULK_STARTED:
1069 LASSERT (rpc->srpc_bulk == NULL || ev->ev_fired);
1071 if (rpc->srpc_bulk != NULL) {
1074 if (sv->sv_bulk_ready != NULL)
1075 rc = (*sv->sv_bulk_ready) (rpc, rc);
1078 srpc_server_rpc_done(rpc, rc);
1083 wi->swi_state = SWI_STATE_REPLY_SUBMITTED;
1084 rc = srpc_send_reply(rpc);
1086 return 0; /* wait for reply */
1087 srpc_server_rpc_done(rpc, rc);
1090 case SWI_STATE_REPLY_SUBMITTED:
1091 if (!ev->ev_fired) {
1092 CERROR("RPC %p: bulk %p, service %d\n",
1093 rpc, rpc->srpc_bulk, sv->sv_id);
1094 CERROR("Event: status %d, type %d, lnet %d\n",
1095 ev->ev_status, ev->ev_type, ev->ev_lnet);
1096 LASSERT (ev->ev_fired);
1099 wi->swi_state = SWI_STATE_DONE;
1100 srpc_server_rpc_done(rpc, ev->ev_status);
1108 srpc_client_rpc_expired (void *data)
1110 srpc_client_rpc_t *rpc = data;
1112 CWARN ("Client RPC expired: service %d, peer %s, timeout %d.\n",
1113 rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
1116 spin_lock(&rpc->crpc_lock);
1118 rpc->crpc_timeout = 0;
1119 srpc_abort_rpc(rpc, -ETIMEDOUT);
1121 spin_unlock(&rpc->crpc_lock);
1123 spin_lock(&srpc_data.rpc_glock);
1124 srpc_data.rpc_counters.rpcs_expired++;
1125 spin_unlock(&srpc_data.rpc_glock);
1129 srpc_add_client_rpc_timer (srpc_client_rpc_t *rpc)
1131 stt_timer_t *timer = &rpc->crpc_timer;
1133 if (rpc->crpc_timeout == 0) return;
1135 CFS_INIT_LIST_HEAD(&timer->stt_list);
1136 timer->stt_data = rpc;
1137 timer->stt_func = srpc_client_rpc_expired;
1138 timer->stt_expires = cfs_time_add(rpc->crpc_timeout,
1139 cfs_time_current_sec());
1140 stt_add_timer(timer);
1145 * Called with rpc->crpc_lock held.
1147 * Upon exit the RPC expiry timer is not queued and the handler is not
1148 * running on any CPU. */
1150 srpc_del_client_rpc_timer (srpc_client_rpc_t *rpc)
1152 /* timer not planted or already exploded */
1153 if (rpc->crpc_timeout == 0)
1156 /* timer sucessfully defused */
1157 if (stt_del_timer(&rpc->crpc_timer))
1161 /* timer detonated, wait for it to explode */
1162 while (rpc->crpc_timeout != 0) {
1163 spin_unlock(&rpc->crpc_lock);
1167 spin_lock(&rpc->crpc_lock);
1170 LBUG(); /* impossible in single-threaded runtime */
1175 srpc_client_rpc_done (srpc_client_rpc_t *rpc, int status)
1177 swi_workitem_t *wi = &rpc->crpc_wi;
1179 LASSERT(status != 0 || wi->swi_state == SWI_STATE_DONE);
1181 spin_lock(&rpc->crpc_lock);
1183 rpc->crpc_closed = 1;
1184 if (rpc->crpc_status == 0)
1185 rpc->crpc_status = status;
1187 srpc_del_client_rpc_timer(rpc);
1189 CDEBUG_LIMIT ((status == 0) ? D_NET : D_NETERROR,
1190 "Client RPC done: service %d, peer %s, status %s:%d:%d\n",
1191 rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
1192 swi_state2str(wi->swi_state), rpc->crpc_aborted, status);
1195 * No one can schedule me now since:
1196 * - RPC timer has been defused.
1197 * - all LNet events have been fired.
1198 * - crpc_closed has been set, preventing srpc_abort_rpc from
1200 * Cancel pending schedules and prevent future schedule attempts:
1202 LASSERT (!srpc_event_pending(rpc));
1203 swi_exit_workitem(wi);
1205 spin_unlock(&rpc->crpc_lock);
1207 (*rpc->crpc_done)(rpc);
1211 /* sends an outgoing RPC */
1213 srpc_send_rpc (swi_workitem_t *wi)
1216 srpc_client_rpc_t *rpc;
1220 LASSERT(wi != NULL);
1222 rpc = wi->swi_workitem.wi_data;
1224 LASSERT (rpc != NULL);
1225 LASSERT (wi == &rpc->crpc_wi);
1227 reply = &rpc->crpc_replymsg;
1228 do_bulk = rpc->crpc_bulk.bk_niov > 0;
1230 spin_lock(&rpc->crpc_lock);
1232 if (rpc->crpc_aborted) {
1233 spin_unlock(&rpc->crpc_lock);
1237 spin_unlock(&rpc->crpc_lock);
1239 switch (wi->swi_state) {
1242 case SWI_STATE_NEWBORN:
1243 LASSERT (!srpc_event_pending(rpc));
1245 rc = srpc_prepare_reply(rpc);
1247 srpc_client_rpc_done(rpc, rc);
1251 rc = srpc_prepare_bulk(rpc);
1254 wi->swi_state = SWI_STATE_REQUEST_SUBMITTED;
1255 rc = srpc_send_request(rpc);
1258 case SWI_STATE_REQUEST_SUBMITTED:
1259 /* CAVEAT EMPTOR: rqtev, rpyev, and bulkev may come in any
1260 * order; however, they're processed in a strict order:
1261 * rqt, rpy, and bulk. */
1262 if (!rpc->crpc_reqstev.ev_fired) break;
1264 rc = rpc->crpc_reqstev.ev_status;
1267 wi->swi_state = SWI_STATE_REQUEST_SENT;
1268 /* perhaps more events, fall thru */
1269 case SWI_STATE_REQUEST_SENT: {
1270 srpc_msg_type_t type = srpc_service2reply(rpc->crpc_service);
1272 if (!rpc->crpc_replyev.ev_fired) break;
1274 rc = rpc->crpc_replyev.ev_status;
1277 srpc_unpack_msg_hdr(reply);
1278 if (reply->msg_type != type ||
1279 (reply->msg_magic != SRPC_MSG_MAGIC &&
1280 reply->msg_magic != __swab32(SRPC_MSG_MAGIC))) {
1281 CWARN ("Bad message from %s: type %u (%d expected),"
1282 " magic %u (%d expected).\n",
1283 libcfs_id2str(rpc->crpc_dest),
1284 reply->msg_type, type,
1285 reply->msg_magic, SRPC_MSG_MAGIC);
1290 if (do_bulk && reply->msg_body.reply.status != 0) {
1291 CWARN ("Remote error %d at %s, unlink bulk buffer in "
1292 "case peer didn't initiate bulk transfer\n",
1293 reply->msg_body.reply.status,
1294 libcfs_id2str(rpc->crpc_dest));
1295 LNetMDUnlink(rpc->crpc_bulk.bk_mdh);
1298 wi->swi_state = SWI_STATE_REPLY_RECEIVED;
1300 case SWI_STATE_REPLY_RECEIVED:
1301 if (do_bulk && !rpc->crpc_bulkev.ev_fired) break;
1303 rc = do_bulk ? rpc->crpc_bulkev.ev_status : 0;
1305 /* Bulk buffer was unlinked due to remote error. Clear error
1306 * since reply buffer still contains valid data.
1307 * NB rpc->crpc_done shouldn't look into bulk data in case of
1309 if (do_bulk && rpc->crpc_bulkev.ev_lnet == LNET_EVENT_UNLINK &&
1310 rpc->crpc_status == 0 && reply->msg_body.reply.status != 0)
1313 wi->swi_state = SWI_STATE_DONE;
1314 srpc_client_rpc_done(rpc, rc);
1319 spin_lock(&rpc->crpc_lock);
1320 srpc_abort_rpc(rpc, rc);
1321 spin_unlock(&rpc->crpc_lock);
1325 if (rpc->crpc_aborted) {
1326 LNetMDUnlink(rpc->crpc_reqstmdh);
1327 LNetMDUnlink(rpc->crpc_replymdh);
1328 LNetMDUnlink(rpc->crpc_bulk.bk_mdh);
1330 if (!srpc_event_pending(rpc)) {
1331 srpc_client_rpc_done(rpc, -EINTR);
1339 srpc_create_client_rpc (lnet_process_id_t peer, int service,
1340 int nbulkiov, int bulklen,
1341 void (*rpc_done)(srpc_client_rpc_t *),
1342 void (*rpc_fini)(srpc_client_rpc_t *), void *priv)
1344 srpc_client_rpc_t *rpc;
1346 LIBCFS_ALLOC(rpc, offsetof(srpc_client_rpc_t,
1347 crpc_bulk.bk_iovs[nbulkiov]));
1351 srpc_init_client_rpc(rpc, peer, service, nbulkiov,
1352 bulklen, rpc_done, rpc_fini, priv);
1356 /* called with rpc->crpc_lock held */
1358 srpc_abort_rpc (srpc_client_rpc_t *rpc, int why)
1362 if (rpc->crpc_aborted || /* already aborted */
1363 rpc->crpc_closed) /* callback imminent */
1367 "Aborting RPC: service %d, peer %s, state %s, why %d\n",
1368 rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
1369 swi_state2str(rpc->crpc_wi.swi_state), why);
1371 rpc->crpc_aborted = 1;
1372 rpc->crpc_status = why;
1373 swi_schedule_workitem(&rpc->crpc_wi);
1377 /* called with rpc->crpc_lock held */
1379 srpc_post_rpc (srpc_client_rpc_t *rpc)
1381 LASSERT (!rpc->crpc_aborted);
1382 LASSERT (srpc_data.rpc_state == SRPC_STATE_RUNNING);
1384 CDEBUG (D_NET, "Posting RPC: peer %s, service %d, timeout %d\n",
1385 libcfs_id2str(rpc->crpc_dest), rpc->crpc_service,
1388 srpc_add_client_rpc_timer(rpc);
1389 swi_schedule_workitem(&rpc->crpc_wi);
1395 srpc_send_reply(struct srpc_server_rpc *rpc)
1397 srpc_event_t *ev = &rpc->srpc_ev;
1398 struct srpc_msg *msg = &rpc->srpc_replymsg;
1399 struct srpc_buffer *buffer = rpc->srpc_reqstbuf;
1400 struct srpc_service_cd *scd = rpc->srpc_scd;
1401 struct srpc_service *sv = scd->scd_svc;
1405 LASSERT(buffer != NULL);
1406 rpyid = buffer->buf_msg.msg_body.reqst.rpyid;
1408 spin_lock(&scd->scd_lock);
1410 if (!sv->sv_shuttingdown && !srpc_serv_is_framework(sv)) {
1411 /* Repost buffer before replying since test client
1412 * might send me another RPC once it gets the reply */
1413 if (srpc_service_post_buffer(scd, buffer) != 0)
1414 CWARN("Failed to repost %s buffer\n", sv->sv_name);
1415 rpc->srpc_reqstbuf = NULL;
1418 spin_unlock(&scd->scd_lock);
1422 ev->ev_type = SRPC_REPLY_SENT;
1424 msg->msg_magic = SRPC_MSG_MAGIC;
1425 msg->msg_version = SRPC_MSG_VERSION;
1426 msg->msg_type = srpc_service2reply(sv->sv_id);
1428 rc = srpc_post_active_rdma(SRPC_RDMA_PORTAL, rpyid, msg,
1429 sizeof(*msg), LNET_MD_OP_PUT,
1430 rpc->srpc_peer, rpc->srpc_self,
1431 &rpc->srpc_replymdh, ev);
1433 ev->ev_fired = 1; /* no more event expected */
1437 /* when in kernel always called with LNET_LOCK() held, and in thread context */
1439 srpc_lnet_ev_handler(lnet_event_t *ev)
1441 struct srpc_service_cd *scd;
1442 srpc_event_t *rpcev = ev->md.user_ptr;
1443 srpc_client_rpc_t *crpc;
1444 srpc_server_rpc_t *srpc;
1445 srpc_buffer_t *buffer;
1448 srpc_msg_type_t type;
1450 LASSERT (!cfs_in_interrupt());
1452 if (ev->status != 0) {
1453 spin_lock(&srpc_data.rpc_glock);
1454 srpc_data.rpc_counters.errors++;
1455 spin_unlock(&srpc_data.rpc_glock);
1458 rpcev->ev_lnet = ev->type;
1460 switch (rpcev->ev_type) {
1462 CERROR("Unknown event: status %d, type %d, lnet %d\n",
1463 rpcev->ev_status, rpcev->ev_type, rpcev->ev_lnet);
1465 case SRPC_REQUEST_SENT:
1466 if (ev->status == 0 && ev->type != LNET_EVENT_UNLINK) {
1467 spin_lock(&srpc_data.rpc_glock);
1468 srpc_data.rpc_counters.rpcs_sent++;
1469 spin_unlock(&srpc_data.rpc_glock);
1471 case SRPC_REPLY_RCVD:
1472 case SRPC_BULK_REQ_RCVD:
1473 crpc = rpcev->ev_data;
1475 if (rpcev != &crpc->crpc_reqstev &&
1476 rpcev != &crpc->crpc_replyev &&
1477 rpcev != &crpc->crpc_bulkev) {
1478 CERROR("rpcev %p, crpc %p, reqstev %p, replyev %p, bulkev %p\n",
1479 rpcev, crpc, &crpc->crpc_reqstev,
1480 &crpc->crpc_replyev, &crpc->crpc_bulkev);
1481 CERROR("Bad event: status %d, type %d, lnet %d\n",
1482 rpcev->ev_status, rpcev->ev_type, rpcev->ev_lnet);
1486 spin_lock(&crpc->crpc_lock);
1488 LASSERT(rpcev->ev_fired == 0);
1489 rpcev->ev_fired = 1;
1490 rpcev->ev_status = (ev->type == LNET_EVENT_UNLINK) ?
1491 -EINTR : ev->status;
1492 swi_schedule_workitem(&crpc->crpc_wi);
1494 spin_unlock(&crpc->crpc_lock);
1497 case SRPC_REQUEST_RCVD:
1498 scd = rpcev->ev_data;
1501 LASSERT(rpcev == &scd->scd_ev);
1503 spin_lock(&scd->scd_lock);
1505 LASSERT (ev->unlinked);
1506 LASSERT (ev->type == LNET_EVENT_PUT ||
1507 ev->type == LNET_EVENT_UNLINK);
1508 LASSERT (ev->type != LNET_EVENT_UNLINK ||
1509 sv->sv_shuttingdown);
1511 buffer = container_of(ev->md.start, srpc_buffer_t, buf_msg);
1512 buffer->buf_peer = ev->initiator;
1513 buffer->buf_self = ev->target.nid;
1515 LASSERT(scd->scd_buf_nposted > 0);
1516 scd->scd_buf_nposted--;
1518 if (sv->sv_shuttingdown) {
1519 /* Leave buffer on scd->scd_buf_nposted since
1520 * srpc_finish_service needs to traverse it. */
1521 spin_unlock(&scd->scd_lock);
1525 if (scd->scd_buf_err_stamp != 0 &&
1526 scd->scd_buf_err_stamp < cfs_time_current_sec()) {
1527 /* re-enable adding buffer */
1528 scd->scd_buf_err_stamp = 0;
1529 scd->scd_buf_err = 0;
1532 if (scd->scd_buf_err == 0 && /* adding buffer is enabled */
1533 scd->scd_buf_adjust == 0 &&
1534 scd->scd_buf_nposted < scd->scd_buf_low) {
1535 scd->scd_buf_adjust = MAX(scd->scd_buf_total / 2,
1537 swi_schedule_workitem(&scd->scd_buf_wi);
1540 cfs_list_del(&buffer->buf_list); /* from scd->scd_buf_posted */
1541 msg = &buffer->buf_msg;
1542 type = srpc_service2request(sv->sv_id);
1544 if (ev->status != 0 || ev->mlength != sizeof(*msg) ||
1545 (msg->msg_type != type &&
1546 msg->msg_type != __swab32(type)) ||
1547 (msg->msg_magic != SRPC_MSG_MAGIC &&
1548 msg->msg_magic != __swab32(SRPC_MSG_MAGIC))) {
1549 CERROR ("Dropping RPC (%s) from %s: "
1550 "status %d mlength %d type %u magic %u.\n",
1551 sv->sv_name, libcfs_id2str(ev->initiator),
1552 ev->status, ev->mlength,
1553 msg->msg_type, msg->msg_magic);
1555 /* NB can't call srpc_service_recycle_buffer here since
1556 * it may call LNetM[DE]Attach. The invalid magic tells
1557 * srpc_handle_rpc to drop this RPC */
1561 if (!cfs_list_empty(&scd->scd_rpc_free)) {
1562 srpc = cfs_list_entry(scd->scd_rpc_free.next,
1563 struct srpc_server_rpc,
1565 cfs_list_del(&srpc->srpc_list);
1567 srpc_init_server_rpc(srpc, scd, buffer);
1568 cfs_list_add_tail(&srpc->srpc_list,
1569 &scd->scd_rpc_active);
1570 swi_schedule_workitem(&srpc->srpc_wi);
1572 cfs_list_add_tail(&buffer->buf_list,
1573 &scd->scd_buf_blocked);
1576 spin_unlock(&scd->scd_lock);
1578 spin_lock(&srpc_data.rpc_glock);
1579 srpc_data.rpc_counters.rpcs_rcvd++;
1580 spin_unlock(&srpc_data.rpc_glock);
1583 case SRPC_BULK_GET_RPLD:
1584 LASSERT (ev->type == LNET_EVENT_SEND ||
1585 ev->type == LNET_EVENT_REPLY ||
1586 ev->type == LNET_EVENT_UNLINK);
1589 break; /* wait for final event */
1591 case SRPC_BULK_PUT_SENT:
1592 if (ev->status == 0 && ev->type != LNET_EVENT_UNLINK) {
1593 spin_lock(&srpc_data.rpc_glock);
1595 if (rpcev->ev_type == SRPC_BULK_GET_RPLD)
1596 srpc_data.rpc_counters.bulk_get += ev->mlength;
1598 srpc_data.rpc_counters.bulk_put += ev->mlength;
1600 spin_unlock(&srpc_data.rpc_glock);
1602 case SRPC_REPLY_SENT:
1603 srpc = rpcev->ev_data;
1604 scd = srpc->srpc_scd;
1606 LASSERT(rpcev == &srpc->srpc_ev);
1608 spin_lock(&scd->scd_lock);
1610 rpcev->ev_fired = 1;
1611 rpcev->ev_status = (ev->type == LNET_EVENT_UNLINK) ?
1612 -EINTR : ev->status;
1613 swi_schedule_workitem(&srpc->srpc_wi);
1615 spin_unlock(&scd->scd_lock);
1623 srpc_check_event (int timeout)
1629 rc = LNetEQPoll(&srpc_data.rpc_lnet_eq, 1,
1630 timeout * 1000, &ev, &i);
1631 if (rc == 0) return 0;
1633 LASSERT (rc == -EOVERFLOW || rc == 1);
1635 /* We can't affort to miss any events... */
1636 if (rc == -EOVERFLOW) {
1637 CERROR ("Dropped an event!!!\n");
1641 srpc_lnet_ev_handler(&ev);
1652 memset(&srpc_data, 0, sizeof(struct smoketest_rpc));
1653 spin_lock_init(&srpc_data.rpc_glock);
1655 /* 1 second pause to avoid timestamp reuse */
1656 cfs_pause(cfs_time_seconds(1));
1657 srpc_data.rpc_matchbits = ((__u64) cfs_time_current_sec()) << 48;
1659 srpc_data.rpc_state = SRPC_STATE_NONE;
1662 rc = LNetNIInit(LUSTRE_SRV_LNET_PID);
1664 if (the_lnet.ln_server_mode_flag)
1665 rc = LNetNIInit(LUSTRE_SRV_LNET_PID);
1667 rc = LNetNIInit(getpid() | LNET_PID_USERFLAG);
1670 CERROR ("LNetNIInit() has failed: %d\n", rc);
1674 srpc_data.rpc_state = SRPC_STATE_NI_INIT;
1676 LNetInvalidateHandle(&srpc_data.rpc_lnet_eq);
1678 rc = LNetEQAlloc(0, srpc_lnet_ev_handler, &srpc_data.rpc_lnet_eq);
1680 rc = LNetEQAlloc(10240, LNET_EQ_HANDLER_NONE, &srpc_data.rpc_lnet_eq);
1683 CERROR("LNetEQAlloc() has failed: %d\n", rc);
1687 rc = LNetSetLazyPortal(SRPC_FRAMEWORK_REQUEST_PORTAL);
1689 rc = LNetSetLazyPortal(SRPC_REQUEST_PORTAL);
1692 srpc_data.rpc_state = SRPC_STATE_EQ_INIT;
1700 srpc_data.rpc_state = SRPC_STATE_RUNNING;
1706 srpc_shutdown (void)
1712 state = srpc_data.rpc_state;
1713 srpc_data.rpc_state = SRPC_STATE_STOPPING;
1718 case SRPC_STATE_RUNNING:
1719 spin_lock(&srpc_data.rpc_glock);
1721 for (i = 0; i <= SRPC_SERVICE_MAX_ID; i++) {
1722 srpc_service_t *sv = srpc_data.rpc_services[i];
1724 LASSERTF (sv == NULL,
1725 "service not empty: id %d, name %s\n",
1729 spin_unlock(&srpc_data.rpc_glock);
1733 case SRPC_STATE_EQ_INIT:
1734 rc = LNetClearLazyPortal(SRPC_FRAMEWORK_REQUEST_PORTAL);
1735 rc = LNetClearLazyPortal(SRPC_REQUEST_PORTAL);
1737 rc = LNetEQFree(srpc_data.rpc_lnet_eq);
1738 LASSERT (rc == 0); /* the EQ should have no user by now */
1740 case SRPC_STATE_NI_INIT: