-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * You may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * In either case, Lustre is distributed in the hope that it will be
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * license text for more details.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_RPC
#ifndef __KERNEL__
# include <liblustre.h>
#else
+# include <libcfs/libcfs.h>
# ifdef __mips64__
# include <linux/kernel.h>
# endif
#endif
+
#include <obd_class.h>
#include <lustre_net.h>
#include <lustre_sec.h>
ev->type == LNET_EVENT_UNLINK);
LASSERT (ev->unlinked);
- DEBUG_REQ((ev->status == 0) ? D_NET : D_ERROR, req,
- "type %d, status %d", ev->type, ev->status);
+ DEBUG_REQ(D_NET, req, "type %d, status %d", ev->type, ev->status);
sptlrpc_request_out_callback(req);
+ req->rq_real_sent = cfs_time_current_sec();
if (ev->type == LNET_EVENT_UNLINK || ev->status != 0) {
/* Failed send: make it seem like the reply timed out, just
* like failing sends in client.c does currently... */
- spin_lock(&req->rq_lock);
+ cfs_spin_lock(&req->rq_lock);
req->rq_net_err = 1;
- spin_unlock(&req->rq_lock);
+ cfs_spin_unlock(&req->rq_lock);
- ptlrpc_wake_client_req(req);
+ ptlrpc_client_wake_req(req);
}
- /* these balance the references in ptl_send_rpc() */
- atomic_dec(&req->rq_import->imp_inflight);
ptlrpc_req_finished(req);
EXIT;
struct ptlrpc_request *req = cbid->cbid_arg;
ENTRY;
- LASSERT (ev->type == LNET_EVENT_PUT ||
- ev->type == LNET_EVENT_UNLINK);
- LASSERT (ev->unlinked);
- LASSERT (ev->md.start == req->rq_repbuf);
- LASSERT (ev->offset == 0);
- LASSERT (ev->mlength <= req->rq_repbuf_len);
+ DEBUG_REQ(D_NET, req, "type %d, status %d", ev->type, ev->status);
- DEBUG_REQ((ev->status == 0) ? D_NET : D_ERROR, req,
- "type %d, status %d", ev->type, ev->status);
+ LASSERT (ev->type == LNET_EVENT_PUT || ev->type == LNET_EVENT_UNLINK);
+ LASSERT (ev->md.start == req->rq_repbuf);
+ LASSERT (ev->offset + ev->mlength <= req->rq_repbuf_len);
+ /* We've set LNET_MD_MANAGE_REMOTE for all outgoing requests
+ for adaptive timeouts' early reply. */
+ LASSERT((ev->md.options & LNET_MD_MANAGE_REMOTE) != 0);
- spin_lock(&req->rq_lock);
+ cfs_spin_lock(&req->rq_lock);
- LASSERT (req->rq_receiving_reply);
req->rq_receiving_reply = 0;
+ req->rq_early = 0;
+ if (ev->unlinked)
+ req->rq_must_unlink = 0;
+
+ if (ev->status)
+ goto out_wake;
+
+ if (ev->type == LNET_EVENT_UNLINK) {
+ LASSERT(ev->unlinked);
+ DEBUG_REQ(D_NET, req, "unlink");
+ goto out_wake;
+ }
- if (ev->type == LNET_EVENT_PUT && ev->status == 0) {
+ if (ev->mlength < ev->rlength ) {
+ CDEBUG(D_RPCTRACE, "truncate req %p rpc %d - %d+%d\n", req,
+ req->rq_replen, ev->rlength, ev->offset);
+ req->rq_reply_truncate = 1;
req->rq_replied = 1;
+ req->rq_status = -EOVERFLOW;
+ req->rq_nob_received = ev->rlength + ev->offset;
+ goto out_wake;
+ }
+
+ if ((ev->offset == 0) &&
+ ((lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT))) {
+ /* Early reply */
+ DEBUG_REQ(D_ADAPTTO, req,
+ "Early reply received: mlen=%u offset=%d replen=%d "
+ "replied=%d unlinked=%d", ev->mlength, ev->offset,
+ req->rq_replen, req->rq_replied, ev->unlinked);
+
+ req->rq_early_count++; /* number received, client side */
+
+ if (req->rq_replied) /* already got the real reply */
+ goto out_wake;
+
+ req->rq_early = 1;
+ req->rq_reply_off = ev->offset;
req->rq_nob_received = ev->mlength;
+ /* And we're still receiving */
+ req->rq_receiving_reply = 1;
+ } else {
+ /* Real reply */
+ req->rq_rep_swab_mask = 0;
+ req->rq_replied = 1;
+ req->rq_reply_off = ev->offset;
+ req->rq_nob_received = ev->mlength;
+ /* LNetMDUnlink can't be called under the LNET_LOCK,
+ so we must unlink in ptlrpc_unregister_reply */
+ DEBUG_REQ(D_INFO, req,
+ "reply in flags=%x mlen=%u offset=%d replen=%d",
+ lustre_msg_get_flags(req->rq_reqmsg),
+ ev->mlength, ev->offset, req->rq_replen);
}
+ req->rq_import->imp_last_reply_time = cfs_time_current_sec();
+
+out_wake:
/* NB don't unlock till after wakeup; req can disappear under us
* since we don't have our own ref */
- ptlrpc_wake_client_req(req);
-
- spin_unlock(&req->rq_lock);
+ ptlrpc_client_wake_req(req);
+ cfs_spin_unlock(&req->rq_lock);
EXIT;
}
{
struct ptlrpc_cb_id *cbid = ev->md.user_ptr;
struct ptlrpc_bulk_desc *desc = cbid->cbid_arg;
+ struct ptlrpc_request *req;
ENTRY;
LASSERT ((desc->bd_type == BULK_PUT_SINK &&
ev->type == LNET_EVENT_UNLINK);
LASSERT (ev->unlinked);
+ if (CFS_FAIL_CHECK_ORSET(OBD_FAIL_PTLRPC_CLIENT_BULK_CB, CFS_FAIL_ONCE))
+ ev->status = -EIO;
+
+ if (CFS_FAIL_CHECK_ORSET(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2,CFS_FAIL_ONCE))
+ ev->status = -EIO;
+
CDEBUG((ev->status == 0) ? D_NET : D_ERROR,
"event type %d, status %d, desc %p\n",
ev->type, ev->status, desc);
- spin_lock(&desc->bd_lock);
-
+ cfs_spin_lock(&desc->bd_lock);
+ req = desc->bd_req;
LASSERT(desc->bd_network_rw);
desc->bd_network_rw = 0;
desc->bd_success = 1;
desc->bd_nob_transferred = ev->mlength;
desc->bd_sender = ev->sender;
+ } else {
+ /* start reconnect and resend if network error hit */
+ cfs_spin_lock(&req->rq_lock);
+ req->rq_net_err = 1;
+ cfs_spin_unlock(&req->rq_lock);
}
- sptlrpc_enc_pool_put_pages(desc);
+ /* release the encrypted pages for write */
+ if (desc->bd_req->rq_bulk_write)
+ sptlrpc_enc_pool_put_pages(desc);
/* NB don't unlock till after wakeup; desc can disappear under us
* otherwise */
- ptlrpc_wake_client_req(desc->bd_req);
+ ptlrpc_client_wake_req(req);
- spin_unlock(&desc->bd_lock);
+ cfs_spin_unlock(&desc->bd_lock);
EXIT;
}
/*
+ * We will have percpt request history list for ptlrpc service in upcoming
+ * patches because we don't want to be serialized by current per-service
+ * history operations. So we require history ID can (somehow) show arriving
+ * order w/o grabbing global lock, and user can sort them in userspace.
+ *
+ * This is how we generate history ID for ptlrpc_request:
+ * ----------------------------------------------------
+ * | 32 bits | 16 bits | (16 - X)bits | X bits |
+ * ----------------------------------------------------
+ * | seconds | usec / 16 | sequence | CPT id |
+ * ----------------------------------------------------
+ *
+ * it might not be precise but should be good enough.
+ */
+
+#define REQS_CPT_BITS(svcpt) ((svcpt)->scp_service->srv_cpt_bits)
+
+#define REQS_SEC_SHIFT 32
+#define REQS_USEC_SHIFT 16
+#define REQS_SEQ_SHIFT(svcpt) REQS_CPT_BITS(svcpt)
+
+static void ptlrpc_req_add_history(struct ptlrpc_service_part *svcpt,
+ struct ptlrpc_request *req)
+{
+ __u64 sec = req->rq_arrival_time.tv_sec;
+ __u32 usec = req->rq_arrival_time.tv_usec >> 4; /* usec / 16 */
+ __u64 new_seq;
+
+ /* set sequence ID for request and add it to history list,
+ * it must be called with hold svcpt::scp_lock */
+
+ new_seq = (sec << REQS_SEC_SHIFT) |
+ (usec << REQS_USEC_SHIFT) | svcpt->scp_cpt;
+ if (new_seq > svcpt->scp_hist_seq) {
+ /* This handles the initial case of scp_hist_seq == 0 or
+ * we just jumped into a new time window */
+ svcpt->scp_hist_seq = new_seq;
+ } else {
+ LASSERT(REQS_SEQ_SHIFT(svcpt) < REQS_USEC_SHIFT);
+ /* NB: increase sequence number in current usec bucket,
+ * however, it's possible that we used up all bits for
+ * sequence and jumped into the next usec bucket (future time),
+ * then we hope there will be less RPCs per bucket at some
+ * point, and sequence will catch up again */
+ svcpt->scp_hist_seq += (1U << REQS_SEQ_SHIFT(svcpt));
+ new_seq = svcpt->scp_hist_seq;
+ }
+
+ req->rq_history_seq = new_seq;
+
+ cfs_list_add_tail(&req->rq_history_list, &svcpt->scp_hist_reqs);
+}
+
+/*
* Server's incoming request callback
*/
void request_in_callback(lnet_event_t *ev)
{
- struct ptlrpc_cb_id *cbid = ev->md.user_ptr;
- struct ptlrpc_request_buffer_desc *rqbd = cbid->cbid_arg;
- struct ptlrpc_service *service = rqbd->rqbd_service;
+ struct ptlrpc_cb_id *cbid = ev->md.user_ptr;
+ struct ptlrpc_request_buffer_desc *rqbd = cbid->cbid_arg;
+ struct ptlrpc_service_part *svcpt = rqbd->rqbd_svcpt;
+ struct ptlrpc_service *service = svcpt->scp_service;
struct ptlrpc_request *req;
ENTRY;
req->rq_reqbuf = ev->md.start + ev->offset;
if (ev->type == LNET_EVENT_PUT && ev->status == 0)
req->rq_reqdata_len = ev->mlength;
- do_gettimeofday(&req->rq_arrival_time);
+ cfs_gettimeofday(&req->rq_arrival_time);
req->rq_peer = ev->initiator;
req->rq_self = ev->target.nid;
req->rq_rqbd = rqbd;
req->rq_phase = RQ_PHASE_NEW;
-#ifdef CRAY_XT3
- req->rq_uid = ev->uid;
-#endif
+ cfs_spin_lock_init(&req->rq_lock);
+ CFS_INIT_LIST_HEAD(&req->rq_timed_list);
+ CFS_INIT_LIST_HEAD(&req->rq_exp_list);
+ cfs_atomic_set(&req->rq_refcount, 1);
+ if (ev->type == LNET_EVENT_PUT)
+ CDEBUG(D_INFO, "incoming req@%p x"LPU64" msgsize %u\n",
+ req, req->rq_xid, ev->mlength);
CDEBUG(D_RPCTRACE, "peer: %s\n", libcfs_id2str(req->rq_peer));
- spin_lock(&service->srv_lock);
+ cfs_spin_lock(&svcpt->scp_lock);
- req->rq_history_seq = service->srv_request_seq++;
- list_add_tail(&req->rq_history_list, &service->srv_request_history);
+ ptlrpc_req_add_history(svcpt, req);
- if (ev->unlinked) {
- service->srv_nrqbd_receiving--;
- CDEBUG(D_RPCTRACE,"Buffer complete: %d buffers still posted\n",
- service->srv_nrqbd_receiving);
-
- /* Normally, don't complain about 0 buffers posted; LNET won't
- * drop incoming reqs since we set the portal lazy */
- if (test_req_buffer_pressure &&
- ev->type != LNET_EVENT_UNLINK &&
- service->srv_nrqbd_receiving == 0)
+ if (ev->unlinked) {
+ svcpt->scp_nrqbds_posted--;
+ CDEBUG(D_INFO, "Buffer complete: %d buffers still posted\n",
+ svcpt->scp_nrqbds_posted);
+
+ /* Normally, don't complain about 0 buffers posted; LNET won't
+ * drop incoming reqs since we set the portal lazy */
+ if (test_req_buffer_pressure &&
+ ev->type != LNET_EVENT_UNLINK &&
+ svcpt->scp_nrqbds_posted == 0)
CWARN("All %s request buffers busy\n",
service->srv_name);
rqbd->rqbd_refcount++;
}
- list_add_tail(&req->rq_list, &service->srv_request_queue);
- service->srv_n_queued_reqs++;
+ cfs_list_add_tail(&req->rq_list, &svcpt->scp_req_incoming);
+ svcpt->scp_nreqs_incoming++;
- /* NB everything can disappear under us once the request
- * has been queued and we unlock, so do the wake now... */
- cfs_waitq_signal(&service->srv_waitq);
+ /* NB everything can disappear under us once the request
+ * has been queued and we unlock, so do the wake now... */
+ cfs_waitq_signal(&svcpt->scp_waitq);
- spin_unlock(&service->srv_lock);
- EXIT;
+ cfs_spin_unlock(&svcpt->scp_lock);
+ EXIT;
}
/*
*/
void reply_out_callback(lnet_event_t *ev)
{
- struct ptlrpc_cb_id *cbid = ev->md.user_ptr;
- struct ptlrpc_reply_state *rs = cbid->cbid_arg;
- struct ptlrpc_service *svc = rs->rs_service;
+ struct ptlrpc_cb_id *cbid = ev->md.user_ptr;
+ struct ptlrpc_reply_state *rs = cbid->cbid_arg;
+ struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
ENTRY;
LASSERT (ev->type == LNET_EVENT_SEND ||
* net's ref on 'rs' */
LASSERT (ev->unlinked);
ptlrpc_rs_decref(rs);
- atomic_dec (&svc->srv_outstanding_replies);
EXIT;
return;
}
LASSERT (rs->rs_on_net);
if (ev->unlinked) {
- /* Last network callback. The net's ref on 'rs' stays put
- * until ptlrpc_server_handle_reply() is done with it */
- spin_lock(&svc->srv_lock);
- rs->rs_on_net = 0;
- ptlrpc_schedule_difficult_reply (rs);
- spin_unlock(&svc->srv_lock);
- }
-
- EXIT;
+ /* Last network callback. The net's ref on 'rs' stays put
+ * until ptlrpc_handle_rs() is done with it */
+ cfs_spin_lock(&svcpt->scp_rep_lock);
+ cfs_spin_lock(&rs->rs_lock);
+
+ rs->rs_on_net = 0;
+ if (!rs->rs_no_ack ||
+ rs->rs_transno <=
+ rs->rs_export->exp_obd->obd_last_committed)
+ ptlrpc_schedule_difficult_reply(rs);
+
+ cfs_spin_unlock(&rs->rs_lock);
+ cfs_spin_unlock(&svcpt->scp_rep_lock);
+ }
+ EXIT;
}
+#ifdef HAVE_SERVER_SUPPORT
/*
* Server's bulk completion callback
*/
"event type %d, status %d, desc %p\n",
ev->type, ev->status, desc);
- spin_lock(&desc->bd_lock);
+ cfs_spin_lock(&desc->bd_lock);
if ((ev->type == LNET_EVENT_ACK ||
ev->type == LNET_EVENT_REPLY) &&
cfs_waitq_signal(&desc->bd_waitq);
}
- spin_unlock(&desc->bd_lock);
+ cfs_spin_unlock(&desc->bd_lock);
EXIT;
}
+#endif
static void ptlrpc_master_callback(lnet_event_t *ev)
{
callback == reply_in_callback ||
callback == client_bulk_callback ||
callback == request_in_callback ||
- callback == reply_out_callback ||
- callback == server_bulk_callback);
+ callback == reply_out_callback
+#ifdef HAVE_SERVER_SUPPORT
+ || callback == server_bulk_callback
+#endif
+ );
callback (ev);
}
lnet_process_id_t *peer, lnet_nid_t *self)
{
int best_dist = 0;
- int best_order = 0;
+ __u32 best_order = 0;
int count = 0;
int rc = -ENOENT;
int portals_compatibility;
int dist;
- int order;
+ __u32 order;
lnet_nid_t dst_nid;
lnet_nid_t src_nid;
break;
}
- LASSERT (order >= 0);
if (rc < 0 ||
dist < best_dist ||
(dist == best_dist && order < best_order)) {
}
CDEBUG(D_NET,"%s->%s\n", uuid->uuid, libcfs_id2str(*peer));
- if (rc != 0)
- CERROR("No NID found for %s\n", uuid->uuid);
return rc;
}
/* CAVEAT EMPTOR: how we process portals events is _radically_
* different depending on... */
#ifdef __KERNEL__
- /* kernel portals calls our master callback when events are added to
- * the event queue. In fact lustre never pulls events off this queue,
- * so it's only sized for some debug history. */
- rc = LNetEQAlloc(1024, ptlrpc_master_callback, &ptlrpc_eq_h);
+ /* kernel LNet calls our master callback when there are new event,
+ * because we are guaranteed to get every event via callback,
+ * so we just set EQ size to 0 to avoid overhread of serializing
+ * enqueue/dequeue operations in LNet. */
+ rc = LNetEQAlloc(0, ptlrpc_master_callback, &ptlrpc_eq_h);
#else
/* liblustre calls the master callback when it removes events from the
* event queue. The event queue has to be big enough not to drop
void *liblustre_services_callback;
void *
-liblustre_register_waitidle_callback (struct list_head *callback_list,
+liblustre_register_waitidle_callback (cfs_list_t *callback_list,
const char *name,
int (*fn)(void *arg), void *arg)
{
llwc->llwc_name = name;
llwc->llwc_fn = fn;
llwc->llwc_arg = arg;
- list_add_tail(&llwc->llwc_list, callback_list);
+ cfs_list_add_tail(&llwc->llwc_list, callback_list);
return (llwc);
}
{
struct liblustre_wait_callback *llwc = opaque;
- list_del(&llwc->llwc_list);
+ cfs_list_del(&llwc->llwc_list);
OBD_FREE(llwc, sizeof(*llwc));
}
LASSERT (rc == -EOVERFLOW || rc == 1);
- /* liblustre: no asynch callback so we can't affort to miss any
+ /* liblustre: no asynch callback so we can't afford to miss any
* events... */
if (rc == -EOVERFLOW) {
CERROR ("Dropped an event!!!\n");
int
liblustre_wait_event (int timeout)
{
- struct list_head *tmp;
+ cfs_list_t *tmp;
struct liblustre_wait_callback *llwc;
int found_something = 0;
found_something = 1;
/* Give all registered callbacks a bite at the cherry */
- list_for_each(tmp, &liblustre_wait_callbacks) {
- llwc = list_entry(tmp, struct liblustre_wait_callback,
- llwc_list);
+ cfs_list_for_each(tmp, &liblustre_wait_callbacks) {
+ llwc = cfs_list_entry(tmp,
+ struct liblustre_wait_callback,
+ llwc_list);
if (llwc->llwc_fn(llwc->llwc_arg))
found_something = 1;
liblustre_wait_idle(void)
{
static int recursed = 0;
-
- struct list_head *tmp;
+
+ cfs_list_t *tmp;
struct liblustre_wait_callback *llwc;
int idle = 0;
LASSERT(!recursed);
recursed = 1;
-
+
do {
liblustre_wait_event(0);
idle = 1;
- list_for_each(tmp, &liblustre_idle_callbacks) {
- llwc = list_entry(tmp, struct liblustre_wait_callback,
- llwc_list);
-
+ cfs_list_for_each(tmp, &liblustre_idle_callbacks) {
+ llwc = cfs_list_entry(tmp,
+ struct liblustre_wait_callback,
+ llwc_list);
+
if (!llwc->llwc_fn(llwc->llwc_arg)) {
idle = 0;
break;
}
}
-
+
} while (!idle);
recursed = 0;
liblustre_register_wait_callback("liblustre_check_services",
&liblustre_check_services,
NULL);
+ cfs_init_completion_module(liblustre_wait_event);
#endif
rc = ptlrpcd_addref();
if (rc == 0)
return 0;
-
+
CERROR("rpcd initialisation failed\n");
#ifndef __KERNEL__
liblustre_deregister_wait_callback(liblustre_services_callback);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff