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) 2002, 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.
37 #define DEBUG_SUBSYSTEM S_RPC
39 #include <liblustre.h>
41 #include <obd_support.h>
42 #include <lustre_net.h>
43 #include <lustre_lib.h>
45 #include "ptlrpc_internal.h"
48 * Helper function. Sends \a len bytes from \a base at offset \a offset
49 * over \a conn connection to portal \a portal.
50 * Returns 0 on success or error code.
52 static int ptl_send_buf (lnet_handle_md_t *mdh, void *base, int len,
53 lnet_ack_req_t ack, struct ptlrpc_cb_id *cbid,
54 struct ptlrpc_connection *conn, int portal, __u64 xid,
61 LASSERT (portal != 0);
62 LASSERT (conn != NULL);
63 CDEBUG (D_INFO, "conn=%p id %s\n", conn, libcfs_id2str(conn->c_peer));
66 md.threshold = (ack == LNET_ACK_REQ) ? 2 : 1;
67 md.options = PTLRPC_MD_OPTIONS;
69 md.eq_handle = ptlrpc_eq_h;
71 if (unlikely(ack == LNET_ACK_REQ &&
72 OBD_FAIL_CHECK_ORSET(OBD_FAIL_PTLRPC_ACK, OBD_FAIL_ONCE))){
73 /* don't ask for the ack to simulate failing client */
77 rc = LNetMDBind (md, LNET_UNLINK, mdh);
78 if (unlikely(rc != 0)) {
79 CERROR ("LNetMDBind failed: %d\n", rc);
80 LASSERT (rc == -ENOMEM);
84 CDEBUG(D_NET, "Sending %d bytes to portal %d, xid "LPD64", offset %u\n",
85 len, portal, xid, offset);
87 rc = LNetPut (conn->c_self, *mdh, ack,
88 conn->c_peer, portal, xid, offset, 0);
89 if (unlikely(rc != 0)) {
91 /* We're going to get an UNLINK event when I unlink below,
92 * which will complete just like any other failed send, so
93 * I fall through and return success here! */
94 CERROR("LNetPut(%s, %d, "LPD64") failed: %d\n",
95 libcfs_id2str(conn->c_peer), portal, xid, rc);
96 rc2 = LNetMDUnlink(*mdh);
97 LASSERTF(rc2 == 0, "rc2 = %d\n", rc2);
104 * Starts bulk transfer for descriptor \a desc
105 * Returns 0 on success or error code.
107 int ptlrpc_start_bulk_transfer(struct ptlrpc_bulk_desc *desc)
109 struct ptlrpc_connection *conn = desc->bd_export->exp_connection;
116 if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_BULK_PUT_NET))
119 /* NB no locking required until desc is on the network */
120 LASSERT (!desc->bd_network_rw);
121 LASSERT (desc->bd_type == BULK_PUT_SOURCE ||
122 desc->bd_type == BULK_GET_SINK);
123 desc->bd_success = 0;
125 md.user_ptr = &desc->bd_cbid;
126 md.eq_handle = ptlrpc_eq_h;
127 md.threshold = 2; /* SENT and ACK/REPLY */
128 md.options = PTLRPC_MD_OPTIONS;
129 ptlrpc_fill_bulk_md(&md, desc);
131 LASSERT (desc->bd_cbid.cbid_fn == server_bulk_callback);
132 LASSERT (desc->bd_cbid.cbid_arg == desc);
134 /* NB total length may be 0 for a read past EOF, so we send a 0
135 * length bulk, since the client expects a bulk event. */
137 rc = LNetMDBind(md, LNET_UNLINK, &desc->bd_md_h);
139 CERROR("LNetMDBind failed: %d\n", rc);
140 LASSERT (rc == -ENOMEM);
144 /* Client's bulk and reply matchbits are the same */
145 xid = desc->bd_req->rq_xid;
146 CDEBUG(D_NET, "Transferring %u pages %u bytes via portal %d "
147 "id %s xid "LPX64"\n", desc->bd_iov_count,
148 desc->bd_nob, desc->bd_portal,
149 libcfs_id2str(conn->c_peer), xid);
151 /* Network is about to get at the memory */
152 desc->bd_network_rw = 1;
154 if (desc->bd_type == BULK_PUT_SOURCE)
155 rc = LNetPut (conn->c_self, desc->bd_md_h, LNET_ACK_REQ,
156 conn->c_peer, desc->bd_portal, xid, 0, 0);
158 rc = LNetGet (conn->c_self, desc->bd_md_h,
159 conn->c_peer, desc->bd_portal, xid, 0);
162 /* Can't send, so we unlink the MD bound above. The UNLINK
163 * event this creates will signal completion with failure,
164 * so we return SUCCESS here! */
165 CERROR("Transfer(%s, %d, "LPX64") failed: %d\n",
166 libcfs_id2str(conn->c_peer), desc->bd_portal, xid, rc);
167 rc2 = LNetMDUnlink(desc->bd_md_h);
175 * Server side bulk abort. Idempotent. Not thread-safe (i.e. only
176 * serialises with completion callback)
178 void ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *desc)
180 struct l_wait_info lwi;
183 LASSERT(!cfs_in_interrupt()); /* might sleep */
185 if (!ptlrpc_server_bulk_active(desc)) /* completed or */
186 return; /* never started */
188 /* We used to poison the pages with 0xab here because we did not want to
189 * send any meaningful data over the wire for evicted clients (bug 9297)
190 * However, this is no longer safe now that we use the page cache on the
193 /* The unlink ensures the callback happens ASAP and is the last
194 * one. If it fails, it must be because completion just happened,
195 * but we must still l_wait_event() in this case, to give liblustre
196 * a chance to run server_bulk_callback()*/
198 LNetMDUnlink(desc->bd_md_h);
201 /* Network access will complete in finite time but the HUGE
202 * timeout lets us CWARN for visibility of sluggish NALs */
203 lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(LONG_UNLINK),
204 cfs_time_seconds(1), NULL, NULL);
205 rc = l_wait_event(desc->bd_waitq,
206 !ptlrpc_server_bulk_active(desc), &lwi);
210 LASSERT(rc == -ETIMEDOUT);
211 CWARN("Unexpectedly long timeout: desc %p\n", desc);
216 * Register bulk for later transfer
217 * Returns 0 on success or error code.
219 int ptlrpc_register_bulk(struct ptlrpc_request *req)
221 struct ptlrpc_bulk_desc *desc = req->rq_bulk;
222 lnet_process_id_t peer;
225 lnet_handle_me_t me_h;
229 if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_BULK_GET_NET))
232 /* NB no locking required until desc is on the network */
233 LASSERT (desc->bd_nob > 0);
234 LASSERT (!desc->bd_network_rw);
235 LASSERT (desc->bd_iov_count <= PTLRPC_MAX_BRW_PAGES);
236 LASSERT (desc->bd_req != NULL);
237 LASSERT (desc->bd_type == BULK_PUT_SINK ||
238 desc->bd_type == BULK_GET_SOURCE);
240 desc->bd_success = 0;
242 peer = desc->bd_import->imp_connection->c_peer;
244 md.user_ptr = &desc->bd_cbid;
245 md.eq_handle = ptlrpc_eq_h;
246 md.threshold = 1; /* PUT or GET */
247 md.options = PTLRPC_MD_OPTIONS |
248 ((desc->bd_type == BULK_GET_SOURCE) ?
249 LNET_MD_OP_GET : LNET_MD_OP_PUT);
250 ptlrpc_fill_bulk_md(&md, desc);
252 LASSERT (desc->bd_cbid.cbid_fn == client_bulk_callback);
253 LASSERT (desc->bd_cbid.cbid_arg == desc);
255 /* XXX Registering the same xid on retried bulk makes my head
256 * explode trying to understand how the original request's bulk
257 * might interfere with the retried request -eeb */
258 LASSERTF (!desc->bd_registered || req->rq_xid != desc->bd_last_xid,
259 "registered: %d rq_xid: "LPU64" bd_last_xid: "LPU64"\n",
260 desc->bd_registered, req->rq_xid, desc->bd_last_xid);
261 desc->bd_registered = 1;
262 desc->bd_last_xid = req->rq_xid;
264 rc = LNetMEAttach(desc->bd_portal, peer,
265 req->rq_xid, 0, LNET_UNLINK, LNET_INS_AFTER, &me_h);
267 CERROR("LNetMEAttach failed: %d\n", rc);
268 LASSERT (rc == -ENOMEM);
272 /* About to let the network at it... */
273 desc->bd_network_rw = 1;
274 rc = LNetMDAttach(me_h, md, LNET_UNLINK, &desc->bd_md_h);
276 CERROR("LNetMDAttach failed: %d\n", rc);
277 LASSERT (rc == -ENOMEM);
278 desc->bd_network_rw = 0;
279 rc2 = LNetMEUnlink (me_h);
284 CDEBUG(D_NET, "Setup bulk %s buffers: %u pages %u bytes, xid "LPU64", "
286 desc->bd_type == BULK_GET_SOURCE ? "get-source" : "put-sink",
287 desc->bd_iov_count, desc->bd_nob,
288 req->rq_xid, desc->bd_portal);
293 * Disconnect a bulk desc from the network. Idempotent. Not
294 * thread-safe (i.e. only interlocks with completion callback).
295 * Returns 1 on success or 0 if network unregistration failed for whatever
298 int ptlrpc_unregister_bulk(struct ptlrpc_request *req, int async)
300 struct ptlrpc_bulk_desc *desc = req->rq_bulk;
302 struct l_wait_info lwi;
306 LASSERT(!cfs_in_interrupt()); /* might sleep */
308 /* Let's setup deadline for reply unlink. */
309 if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_LONG_BULK_UNLINK) &&
310 async && req->rq_bulk_deadline == 0)
311 req->rq_bulk_deadline = cfs_time_current_sec() + LONG_UNLINK;
313 if (!ptlrpc_client_bulk_active(req)) /* completed or */
314 RETURN(1); /* never registered */
316 LASSERT(desc->bd_req == req); /* bd_req NULL until registered */
318 /* the unlink ensures the callback happens ASAP and is the last
319 * one. If it fails, it must be because completion just happened,
320 * but we must still l_wait_event() in this case to give liblustre
321 * a chance to run client_bulk_callback() */
323 LNetMDUnlink(desc->bd_md_h);
325 if (!ptlrpc_client_bulk_active(req)) /* completed or */
326 RETURN(1); /* never registered */
328 /* Move to "Unregistering" phase as bulk was not unlinked yet. */
329 ptlrpc_rqphase_move(req, RQ_PHASE_UNREGISTERING);
331 /* Do not wait for unlink to finish. */
335 if (req->rq_set != NULL)
336 wq = &req->rq_set->set_waitq;
338 wq = &req->rq_reply_waitq;
341 /* Network access will complete in finite time but the HUGE
342 * timeout lets us CWARN for visibility of sluggish NALs */
343 lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(LONG_UNLINK),
344 cfs_time_seconds(1), NULL, NULL);
345 rc = l_wait_event(*wq, !ptlrpc_client_bulk_active(req), &lwi);
347 ptlrpc_rqphase_move(req, req->rq_next_phase);
351 LASSERT(rc == -ETIMEDOUT);
352 DEBUG_REQ(D_WARNING, req, "Unexpectedly long timeout: desc %p",
358 static void ptlrpc_at_set_reply(struct ptlrpc_request *req, int flags)
360 struct ptlrpc_service *svc = req->rq_rqbd->rqbd_service;
361 int service_time = max_t(int, cfs_time_current_sec() -
362 req->rq_arrival_time.tv_sec, 1);
364 if (!(flags & PTLRPC_REPLY_EARLY) &&
365 (req->rq_type != PTL_RPC_MSG_ERR) &&
366 (req->rq_reqmsg != NULL) &&
367 !(lustre_msg_get_flags(req->rq_reqmsg) &
368 (MSG_RESENT | MSG_REPLAY |
369 MSG_REQ_REPLAY_DONE | MSG_LOCK_REPLAY_DONE))) {
370 /* early replies, errors and recovery requests don't count
371 * toward our service time estimate */
372 int oldse = at_measured(&svc->srv_at_estimate, service_time);
374 DEBUG_REQ(D_ADAPTTO, req,
375 "svc %s changed estimate from %d to %d",
376 svc->srv_name, oldse,
377 at_get(&svc->srv_at_estimate));
379 /* Report actual service time for client latency calc */
380 lustre_msg_set_service_time(req->rq_repmsg, service_time);
381 /* Report service time estimate for future client reqs, but report 0
382 * (to be ignored by client) if it's a error reply during recovery.
384 if (req->rq_type == PTL_RPC_MSG_ERR &&
385 (req->rq_export == NULL || req->rq_export->exp_obd->obd_recovering))
386 lustre_msg_set_timeout(req->rq_repmsg, 0);
388 lustre_msg_set_timeout(req->rq_repmsg,
389 at_get(&svc->srv_at_estimate));
391 if (req->rq_reqmsg &&
392 !(lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT)) {
393 CDEBUG(D_ADAPTTO, "No early reply support: flags=%#x "
394 "req_flags=%#x magic=%d:%x/%x len=%d\n",
395 flags, lustre_msg_get_flags(req->rq_reqmsg),
396 lustre_msg_is_v1(req->rq_reqmsg),
397 lustre_msg_get_magic(req->rq_reqmsg),
398 lustre_msg_get_magic(req->rq_repmsg), req->rq_replen);
403 * Send request reply from request \a req reply buffer.
404 * \a flags defines reply types
405 * Returns 0 on sucess or error code
407 int ptlrpc_send_reply(struct ptlrpc_request *req, int flags)
409 struct ptlrpc_service *svc = req->rq_rqbd->rqbd_service;
410 struct ptlrpc_reply_state *rs = req->rq_reply_state;
411 struct ptlrpc_connection *conn;
414 /* We must already have a reply buffer (only ptlrpc_error() may be
415 * called without one). The reply generated by sptlrpc layer (e.g.
416 * error notify, etc.) might have NULL rq->reqmsg; Otherwise we must
417 * have a request buffer which is either the actual (swabbed) incoming
418 * request, or a saved copy if this is a req saved in
419 * target_queue_final_reply().
421 LASSERT (req->rq_no_reply == 0);
422 LASSERT (req->rq_reqbuf != NULL);
423 LASSERT (rs != NULL);
424 LASSERT ((flags & PTLRPC_REPLY_MAYBE_DIFFICULT) || !rs->rs_difficult);
425 LASSERT (req->rq_repmsg != NULL);
426 LASSERT (req->rq_repmsg == rs->rs_msg);
427 LASSERT (rs->rs_cb_id.cbid_fn == reply_out_callback);
428 LASSERT (rs->rs_cb_id.cbid_arg == rs);
430 /* There may be no rq_export during failover */
432 if (unlikely(req->rq_export && req->rq_export->exp_obd &&
433 req->rq_export->exp_obd->obd_fail)) {
434 /* Failed obd's only send ENODEV */
435 req->rq_type = PTL_RPC_MSG_ERR;
436 req->rq_status = -ENODEV;
437 CDEBUG(D_HA, "sending ENODEV from failed obd %d\n",
438 req->rq_export->exp_obd->obd_minor);
441 if (req->rq_type != PTL_RPC_MSG_ERR)
442 req->rq_type = PTL_RPC_MSG_REPLY;
444 lustre_msg_set_type(req->rq_repmsg, req->rq_type);
445 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
446 lustre_msg_set_opc(req->rq_repmsg,
447 req->rq_reqmsg ? lustre_msg_get_opc(req->rq_reqmsg) : 0);
449 target_pack_pool_reply(req);
451 ptlrpc_at_set_reply(req, flags);
453 if (req->rq_export == NULL || req->rq_export->exp_connection == NULL)
454 conn = ptlrpc_connection_get(req->rq_peer, req->rq_self, NULL);
456 conn = ptlrpc_connection_addref(req->rq_export->exp_connection);
458 if (unlikely(conn == NULL)) {
459 CERROR("not replying on NULL connection\n"); /* bug 9635 */
462 cfs_atomic_inc (&svc->srv_outstanding_replies);
463 ptlrpc_rs_addref(rs); /* +1 ref for the network */
465 rc = sptlrpc_svc_wrap_reply(req);
469 req->rq_sent = cfs_time_current_sec();
471 rc = ptl_send_buf (&rs->rs_md_h, rs->rs_repbuf, rs->rs_repdata_len,
472 (rs->rs_difficult && !rs->rs_no_ack) ?
473 LNET_ACK_REQ : LNET_NOACK_REQ,
474 &rs->rs_cb_id, conn, svc->srv_rep_portal,
475 req->rq_xid, req->rq_reply_off);
477 if (unlikely(rc != 0)) {
478 cfs_atomic_dec (&svc->srv_outstanding_replies);
479 ptlrpc_req_drop_rs(req);
481 ptlrpc_connection_put(conn);
485 int ptlrpc_reply (struct ptlrpc_request *req)
487 if (req->rq_no_reply)
490 return (ptlrpc_send_reply(req, 0));
494 * For request \a req send an error reply back. Create empty
495 * reply buffers if necessary.
497 int ptlrpc_send_error(struct ptlrpc_request *req, int may_be_difficult)
502 if (req->rq_no_reply)
505 if (!req->rq_repmsg) {
506 rc = lustre_pack_reply(req, 1, NULL, NULL);
511 req->rq_type = PTL_RPC_MSG_ERR;
513 rc = ptlrpc_send_reply(req, may_be_difficult);
517 int ptlrpc_error(struct ptlrpc_request *req)
519 return ptlrpc_send_error(req, 0);
523 * Send request \a request.
524 * if \a noreply is set, don't expect any reply back and don't set up
526 * Returns 0 on success or error code.
528 int ptl_send_rpc(struct ptlrpc_request *request, int noreply)
532 struct ptlrpc_connection *connection;
533 lnet_handle_me_t reply_me_h;
535 struct obd_device *obd = request->rq_import->imp_obd;
538 if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_DROP_RPC))
541 LASSERT(request->rq_type == PTL_RPC_MSG_REQUEST);
542 LASSERT(request->rq_wait_ctx == 0);
544 /* If this is a re-transmit, we're required to have disengaged
545 * cleanly from the previous attempt */
546 LASSERT(!request->rq_receiving_reply);
548 if (request->rq_import->imp_obd &&
549 request->rq_import->imp_obd->obd_fail) {
550 CDEBUG(D_HA, "muting rpc for failed imp obd %s\n",
551 request->rq_import->imp_obd->obd_name);
552 /* this prevents us from waiting in ptlrpc_queue_wait */
554 request->rq_status = -ENODEV;
558 connection = request->rq_import->imp_connection;
560 lustre_msg_set_handle(request->rq_reqmsg,
561 &request->rq_import->imp_remote_handle);
562 lustre_msg_set_type(request->rq_reqmsg, PTL_RPC_MSG_REQUEST);
563 lustre_msg_set_conn_cnt(request->rq_reqmsg,
564 request->rq_import->imp_conn_cnt);
565 lustre_msghdr_set_flags(request->rq_reqmsg,
566 request->rq_import->imp_msghdr_flags);
568 if (request->rq_resend)
569 lustre_msg_add_flags(request->rq_reqmsg, MSG_RESENT);
571 rc = sptlrpc_cli_wrap_request(request);
575 /* bulk register should be done after wrap_request() */
576 if (request->rq_bulk != NULL) {
577 rc = ptlrpc_register_bulk (request);
583 LASSERT (request->rq_replen != 0);
584 if (request->rq_repbuf == NULL) {
585 LASSERT(request->rq_repdata == NULL);
586 LASSERT(request->rq_repmsg == NULL);
587 rc = sptlrpc_cli_alloc_repbuf(request,
590 /* this prevents us from looping in
591 * ptlrpc_queue_wait */
593 request->rq_status = rc;
594 GOTO(cleanup_bulk, rc);
597 request->rq_repdata = NULL;
598 request->rq_repmsg = NULL;
601 rc = LNetMEAttach(request->rq_reply_portal,/*XXX FIXME bug 249*/
602 connection->c_peer, request->rq_xid, 0,
603 LNET_UNLINK, LNET_INS_AFTER, &reply_me_h);
605 CERROR("LNetMEAttach failed: %d\n", rc);
606 LASSERT (rc == -ENOMEM);
607 GOTO(cleanup_bulk, rc = -ENOMEM);
611 cfs_spin_lock(&request->rq_lock);
612 /* If the MD attach succeeds, there _will_ be a reply_in callback */
613 request->rq_receiving_reply = !noreply;
614 /* We are responsible for unlinking the reply buffer */
615 request->rq_must_unlink = !noreply;
616 /* Clear any flags that may be present from previous sends. */
617 request->rq_replied = 0;
619 request->rq_timedout = 0;
620 request->rq_net_err = 0;
621 request->rq_resend = 0;
622 request->rq_restart = 0;
623 request->rq_reply_truncate = 0;
624 cfs_spin_unlock(&request->rq_lock);
627 reply_md.start = request->rq_repbuf;
628 reply_md.length = request->rq_repbuf_len;
629 /* Allow multiple early replies */
630 reply_md.threshold = LNET_MD_THRESH_INF;
631 /* Manage remote for early replies */
632 reply_md.options = PTLRPC_MD_OPTIONS | LNET_MD_OP_PUT |
633 LNET_MD_MANAGE_REMOTE |
634 LNET_MD_TRUNCATE; /* allow to make EOVERFLOW error */;
635 reply_md.user_ptr = &request->rq_reply_cbid;
636 reply_md.eq_handle = ptlrpc_eq_h;
638 /* We must see the unlink callback to unset rq_must_unlink,
639 so we can't auto-unlink */
640 rc = LNetMDAttach(reply_me_h, reply_md, LNET_RETAIN,
641 &request->rq_reply_md_h);
643 CERROR("LNetMDAttach failed: %d\n", rc);
644 LASSERT (rc == -ENOMEM);
645 cfs_spin_lock(&request->rq_lock);
646 /* ...but the MD attach didn't succeed... */
647 request->rq_receiving_reply = 0;
648 cfs_spin_unlock(&request->rq_lock);
649 GOTO(cleanup_me, rc = -ENOMEM);
652 CDEBUG(D_NET, "Setup reply buffer: %u bytes, xid "LPU64
654 request->rq_repbuf_len, request->rq_xid,
655 request->rq_reply_portal);
658 /* add references on request for request_out_callback */
659 ptlrpc_request_addref(request);
660 if (obd->obd_svc_stats != NULL)
661 lprocfs_counter_add(obd->obd_svc_stats, PTLRPC_REQACTIVE_CNTR,
662 cfs_atomic_read(&request->rq_import->imp_inflight));
664 OBD_FAIL_TIMEOUT(OBD_FAIL_PTLRPC_DELAY_SEND, request->rq_timeout + 5);
666 cfs_gettimeofday(&request->rq_arrival_time);
667 request->rq_sent = cfs_time_current_sec();
668 /* We give the server rq_timeout secs to process the req, and
669 add the network latency for our local timeout. */
670 request->rq_deadline = request->rq_sent + request->rq_timeout +
671 ptlrpc_at_get_net_latency(request);
673 ptlrpc_pinger_sending_on_import(request->rq_import);
675 DEBUG_REQ(D_INFO, request, "send flg=%x",
676 lustre_msg_get_flags(request->rq_reqmsg));
677 rc = ptl_send_buf(&request->rq_req_md_h,
678 request->rq_reqbuf, request->rq_reqdata_len,
679 LNET_NOACK_REQ, &request->rq_req_cbid,
681 request->rq_request_portal,
686 ptlrpc_req_finished(request);
691 /* MEUnlink is safe; the PUT didn't even get off the ground, and
692 * nobody apart from the PUT's target has the right nid+XID to
693 * access the reply buffer. */
694 rc2 = LNetMEUnlink(reply_me_h);
696 /* UNLINKED callback called synchronously */
697 LASSERT(!request->rq_receiving_reply);
700 /* We do sync unlink here as there was no real transfer here so
701 * the chance to have long unlink to sluggish net is smaller here. */
702 ptlrpc_unregister_bulk(request, 0);
707 * Register request buffer descriptor for request receiving.
709 int ptlrpc_register_rqbd(struct ptlrpc_request_buffer_desc *rqbd)
711 struct ptlrpc_service *service = rqbd->rqbd_service;
712 static lnet_process_id_t match_id = {LNET_NID_ANY, LNET_PID_ANY};
715 lnet_handle_me_t me_h;
717 CDEBUG(D_NET, "LNetMEAttach: portal %d\n",
718 service->srv_req_portal);
720 if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_RQBD))
723 rc = LNetMEAttach(service->srv_req_portal,
724 match_id, 0, ~0, LNET_UNLINK, LNET_INS_AFTER, &me_h);
726 CERROR("LNetMEAttach failed: %d\n", rc);
730 LASSERT(rqbd->rqbd_refcount == 0);
731 rqbd->rqbd_refcount = 1;
733 md.start = rqbd->rqbd_buffer;
734 md.length = service->srv_buf_size;
735 md.max_size = service->srv_max_req_size;
736 md.threshold = LNET_MD_THRESH_INF;
737 md.options = PTLRPC_MD_OPTIONS | LNET_MD_OP_PUT | LNET_MD_MAX_SIZE;
738 md.user_ptr = &rqbd->rqbd_cbid;
739 md.eq_handle = ptlrpc_eq_h;
741 rc = LNetMDAttach(me_h, md, LNET_UNLINK, &rqbd->rqbd_md_h);
745 CERROR("LNetMDAttach failed: %d; \n", rc);
746 LASSERT (rc == -ENOMEM);
747 rc = LNetMEUnlink (me_h);
749 rqbd->rqbd_refcount = 0;