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) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lnet/klnds/o2iblnd/o2iblnd.c
38 * Author: Eric Barton <eric@bartonsoftware.com>
44 static lnd_t the_o2iblnd;
46 kib_data_t kiblnd_data;
49 kiblnd_cksum (void *ptr, int nob)
55 sum = ((sum << 1) | (sum >> 31)) + *c++;
57 /* ensure I don't return 0 (== no checksum) */
58 return (sum == 0) ? 1 : sum;
62 kiblnd_msgtype2str(int type)
65 case IBLND_MSG_CONNREQ:
68 case IBLND_MSG_CONNACK:
74 case IBLND_MSG_IMMEDIATE:
77 case IBLND_MSG_PUT_REQ:
80 case IBLND_MSG_PUT_NAK:
83 case IBLND_MSG_PUT_ACK:
86 case IBLND_MSG_PUT_DONE:
89 case IBLND_MSG_GET_REQ:
92 case IBLND_MSG_GET_DONE:
101 kiblnd_msgtype2size(int type)
103 const int hdr_size = offsetof(kib_msg_t, ibm_u);
106 case IBLND_MSG_CONNREQ:
107 case IBLND_MSG_CONNACK:
108 return hdr_size + sizeof(kib_connparams_t);
113 case IBLND_MSG_IMMEDIATE:
114 return offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[0]);
116 case IBLND_MSG_PUT_REQ:
117 return hdr_size + sizeof(kib_putreq_msg_t);
119 case IBLND_MSG_PUT_ACK:
120 return hdr_size + sizeof(kib_putack_msg_t);
122 case IBLND_MSG_GET_REQ:
123 return hdr_size + sizeof(kib_get_msg_t);
125 case IBLND_MSG_PUT_NAK:
126 case IBLND_MSG_PUT_DONE:
127 case IBLND_MSG_GET_DONE:
128 return hdr_size + sizeof(kib_completion_msg_t);
135 kiblnd_unpack_rd(kib_msg_t *msg, int flip)
142 LASSERT (msg->ibm_type == IBLND_MSG_GET_REQ ||
143 msg->ibm_type == IBLND_MSG_PUT_ACK);
145 rd = msg->ibm_type == IBLND_MSG_GET_REQ ?
146 &msg->ibm_u.get.ibgm_rd :
147 &msg->ibm_u.putack.ibpam_rd;
150 __swab32s(&rd->rd_key);
151 __swab32s(&rd->rd_nfrags);
156 if (n <= 0 || n > IBLND_MAX_RDMA_FRAGS) {
157 CERROR("Bad nfrags: %d, should be 0 < n <= %d\n",
158 n, IBLND_MAX_RDMA_FRAGS);
162 nob = offsetof (kib_msg_t, ibm_u) +
163 kiblnd_rd_msg_size(rd, msg->ibm_type, n);
165 if (msg->ibm_nob < nob) {
166 CERROR("Short %s: %d(%d)\n",
167 kiblnd_msgtype2str(msg->ibm_type), msg->ibm_nob, nob);
174 for (i = 0; i < n; i++) {
175 __swab32s(&rd->rd_frags[i].rf_nob);
176 __swab64s(&rd->rd_frags[i].rf_addr);
183 kiblnd_pack_msg (lnet_ni_t *ni, kib_msg_t *msg, int version,
184 int credits, lnet_nid_t dstnid, __u64 dststamp)
186 kib_net_t *net = ni->ni_data;
188 /* CAVEAT EMPTOR! all message fields not set here should have been
189 * initialised previously. */
190 msg->ibm_magic = IBLND_MSG_MAGIC;
191 msg->ibm_version = version;
193 msg->ibm_credits = credits;
196 msg->ibm_srcnid = ni->ni_nid;
197 msg->ibm_srcstamp = net->ibn_incarnation;
198 msg->ibm_dstnid = dstnid;
199 msg->ibm_dststamp = dststamp;
201 if (*kiblnd_tunables.kib_cksum) {
202 /* NB ibm_cksum zero while computing cksum */
203 msg->ibm_cksum = kiblnd_cksum(msg, msg->ibm_nob);
208 kiblnd_unpack_msg(kib_msg_t *msg, int nob)
210 const int hdr_size = offsetof(kib_msg_t, ibm_u);
216 /* 6 bytes are enough to have received magic + version */
218 CERROR("Short message: %d\n", nob);
222 if (msg->ibm_magic == IBLND_MSG_MAGIC) {
224 } else if (msg->ibm_magic == __swab32(IBLND_MSG_MAGIC)) {
227 CERROR("Bad magic: %08x\n", msg->ibm_magic);
231 version = flip ? __swab16(msg->ibm_version) : msg->ibm_version;
232 if (version != IBLND_MSG_VERSION &&
233 version != IBLND_MSG_VERSION_1) {
234 CERROR("Bad version: %x\n", version);
238 if (nob < hdr_size) {
239 CERROR("Short message: %d\n", nob);
243 msg_nob = flip ? __swab32(msg->ibm_nob) : msg->ibm_nob;
245 CERROR("Short message: got %d, wanted %d\n", nob, msg_nob);
249 /* checksum must be computed with ibm_cksum zero and BEFORE anything
251 msg_cksum = flip ? __swab32(msg->ibm_cksum) : msg->ibm_cksum;
253 if (msg_cksum != 0 &&
254 msg_cksum != kiblnd_cksum(msg, msg_nob)) {
255 CERROR("Bad checksum\n");
259 msg->ibm_cksum = msg_cksum;
262 /* leave magic unflipped as a clue to peer endianness */
263 msg->ibm_version = version;
264 CLASSERT (sizeof(msg->ibm_type) == 1);
265 CLASSERT (sizeof(msg->ibm_credits) == 1);
266 msg->ibm_nob = msg_nob;
267 __swab64s(&msg->ibm_srcnid);
268 __swab64s(&msg->ibm_srcstamp);
269 __swab64s(&msg->ibm_dstnid);
270 __swab64s(&msg->ibm_dststamp);
273 if (msg->ibm_srcnid == LNET_NID_ANY) {
274 CERROR("Bad src nid: %s\n", libcfs_nid2str(msg->ibm_srcnid));
278 if (msg_nob < kiblnd_msgtype2size(msg->ibm_type)) {
279 CERROR("Short %s: %d(%d)\n", kiblnd_msgtype2str(msg->ibm_type),
280 msg_nob, kiblnd_msgtype2size(msg->ibm_type));
284 switch (msg->ibm_type) {
286 CERROR("Unknown message type %x\n", msg->ibm_type);
290 case IBLND_MSG_IMMEDIATE:
291 case IBLND_MSG_PUT_REQ:
294 case IBLND_MSG_PUT_ACK:
295 case IBLND_MSG_GET_REQ:
296 if (kiblnd_unpack_rd(msg, flip))
300 case IBLND_MSG_PUT_NAK:
301 case IBLND_MSG_PUT_DONE:
302 case IBLND_MSG_GET_DONE:
304 __swab32s(&msg->ibm_u.completion.ibcm_status);
307 case IBLND_MSG_CONNREQ:
308 case IBLND_MSG_CONNACK:
310 __swab16s(&msg->ibm_u.connparams.ibcp_queue_depth);
311 __swab16s(&msg->ibm_u.connparams.ibcp_max_frags);
312 __swab32s(&msg->ibm_u.connparams.ibcp_max_msg_size);
320 kiblnd_create_peer(lnet_ni_t *ni, kib_peer_t **peerp, lnet_nid_t nid)
323 kib_net_t *net = ni->ni_data;
324 int cpt = lnet_cpt_of_nid(nid);
327 LASSERT(net != NULL);
328 LASSERT(nid != LNET_NID_ANY);
330 LIBCFS_CPT_ALLOC(peer, lnet_cpt_table(), cpt, sizeof(*peer));
332 CERROR("Cannot allocate peer\n");
339 peer->ibp_last_alive = 0;
340 atomic_set(&peer->ibp_refcount, 1); /* 1 ref for caller */
342 INIT_LIST_HEAD(&peer->ibp_list); /* not in the peer table yet */
343 INIT_LIST_HEAD(&peer->ibp_conns);
344 INIT_LIST_HEAD(&peer->ibp_tx_queue);
346 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
348 /* always called with a ref on ni, which prevents ni being shutdown */
349 LASSERT(net->ibn_shutdown == 0);
351 /* npeers only grows with the global lock held */
352 atomic_inc(&net->ibn_npeers);
354 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
361 kiblnd_destroy_peer (kib_peer_t *peer)
363 kib_net_t *net = peer->ibp_ni->ni_data;
365 LASSERT(net != NULL);
366 LASSERT (atomic_read(&peer->ibp_refcount) == 0);
367 LASSERT(!kiblnd_peer_active(peer));
368 LASSERT(peer->ibp_connecting == 0);
369 LASSERT(peer->ibp_accepting == 0);
370 LASSERT(list_empty(&peer->ibp_conns));
371 LASSERT(list_empty(&peer->ibp_tx_queue));
373 LIBCFS_FREE(peer, sizeof(*peer));
375 /* NB a peer's connections keep a reference on their peer until
376 * they are destroyed, so we can be assured that _all_ state to do
377 * with this peer has been cleaned up when its refcount drops to
379 atomic_dec(&net->ibn_npeers);
383 kiblnd_find_peer_locked (lnet_nid_t nid)
385 /* the caller is responsible for accounting the additional reference
386 * that this creates */
387 struct list_head *peer_list = kiblnd_nid2peerlist(nid);
388 struct list_head *tmp;
391 list_for_each(tmp, peer_list) {
393 peer = list_entry(tmp, kib_peer_t, ibp_list);
395 LASSERT(peer->ibp_connecting > 0 || /* creating conns */
396 peer->ibp_accepting > 0 ||
397 !list_empty(&peer->ibp_conns)); /* active conn */
399 if (peer->ibp_nid != nid)
402 CDEBUG(D_NET, "got peer [%p] -> %s (%d) version: %x\n",
403 peer, libcfs_nid2str(nid),
404 atomic_read(&peer->ibp_refcount),
412 kiblnd_unlink_peer_locked (kib_peer_t *peer)
414 LASSERT(list_empty(&peer->ibp_conns));
416 LASSERT (kiblnd_peer_active(peer));
417 list_del_init(&peer->ibp_list);
418 /* lose peerlist's ref */
419 kiblnd_peer_decref(peer);
423 kiblnd_get_peer_info(lnet_ni_t *ni, int index,
424 lnet_nid_t *nidp, int *count)
427 struct list_head *ptmp;
431 read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
433 for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) {
435 list_for_each(ptmp, &kiblnd_data.kib_peers[i]) {
437 peer = list_entry(ptmp, kib_peer_t, ibp_list);
438 LASSERT(peer->ibp_connecting > 0 ||
439 peer->ibp_accepting > 0 ||
440 !list_empty(&peer->ibp_conns));
442 if (peer->ibp_ni != ni)
448 *nidp = peer->ibp_nid;
449 *count = atomic_read(&peer->ibp_refcount);
451 read_unlock_irqrestore(&kiblnd_data.kib_global_lock,
457 read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
462 kiblnd_del_peer_locked (kib_peer_t *peer)
464 struct list_head *ctmp;
465 struct list_head *cnxt;
468 if (list_empty(&peer->ibp_conns)) {
469 kiblnd_unlink_peer_locked(peer);
471 list_for_each_safe(ctmp, cnxt, &peer->ibp_conns) {
472 conn = list_entry(ctmp, kib_conn_t, ibc_list);
474 kiblnd_close_conn_locked(conn, 0);
476 /* NB closing peer's last conn unlinked it. */
478 /* NB peer now unlinked; might even be freed if the peer table had the
483 kiblnd_del_peer (lnet_ni_t *ni, lnet_nid_t nid)
485 struct list_head zombies = LIST_HEAD_INIT(zombies);
486 struct list_head *ptmp;
487 struct list_head *pnxt;
495 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
497 if (nid != LNET_NID_ANY) {
498 lo = hi = kiblnd_nid2peerlist(nid) - kiblnd_data.kib_peers;
501 hi = kiblnd_data.kib_peer_hash_size - 1;
504 for (i = lo; i <= hi; i++) {
505 list_for_each_safe(ptmp, pnxt, &kiblnd_data.kib_peers[i]) {
506 peer = list_entry(ptmp, kib_peer_t, ibp_list);
507 LASSERT(peer->ibp_connecting > 0 ||
508 peer->ibp_accepting > 0 ||
509 !list_empty(&peer->ibp_conns));
511 if (peer->ibp_ni != ni)
514 if (!(nid == LNET_NID_ANY || peer->ibp_nid == nid))
517 if (!list_empty(&peer->ibp_tx_queue)) {
518 LASSERT(list_empty(&peer->ibp_conns));
520 list_splice_init(&peer->ibp_tx_queue,
524 kiblnd_del_peer_locked(peer);
525 rc = 0; /* matched something */
529 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
531 kiblnd_txlist_done(ni, &zombies, -EIO);
537 kiblnd_get_conn_by_idx(lnet_ni_t *ni, int index)
540 struct list_head *ptmp;
542 struct list_head *ctmp;
546 read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
548 for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) {
549 list_for_each(ptmp, &kiblnd_data.kib_peers[i]) {
551 peer = list_entry(ptmp, kib_peer_t, ibp_list);
552 LASSERT(peer->ibp_connecting > 0 ||
553 peer->ibp_accepting > 0 ||
554 !list_empty(&peer->ibp_conns));
556 if (peer->ibp_ni != ni)
559 list_for_each(ctmp, &peer->ibp_conns) {
563 conn = list_entry(ctmp, kib_conn_t, ibc_list);
564 kiblnd_conn_addref(conn);
565 read_unlock_irqrestore(&kiblnd_data.kib_global_lock,
572 read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
577 kiblnd_debug_rx (kib_rx_t *rx)
579 CDEBUG(D_CONSOLE, " %p status %d msg_type %x cred %d\n",
580 rx, rx->rx_status, rx->rx_msg->ibm_type,
581 rx->rx_msg->ibm_credits);
585 kiblnd_debug_tx (kib_tx_t *tx)
587 CDEBUG(D_CONSOLE, " %p snd %d q %d w %d rc %d dl %lx "
588 "cookie "LPX64" msg %s%s type %x cred %d\n",
589 tx, tx->tx_sending, tx->tx_queued, tx->tx_waiting,
590 tx->tx_status, tx->tx_deadline, tx->tx_cookie,
591 tx->tx_lntmsg[0] == NULL ? "-" : "!",
592 tx->tx_lntmsg[1] == NULL ? "-" : "!",
593 tx->tx_msg->ibm_type, tx->tx_msg->ibm_credits);
597 kiblnd_debug_conn (kib_conn_t *conn)
599 struct list_head *tmp;
602 spin_lock(&conn->ibc_lock);
604 CDEBUG(D_CONSOLE, "conn[%d] %p [version %x] -> %s:\n",
605 atomic_read(&conn->ibc_refcount), conn,
606 conn->ibc_version, libcfs_nid2str(conn->ibc_peer->ibp_nid));
607 CDEBUG(D_CONSOLE, " state %d nposted %d/%d cred %d o_cred %d "
608 " r_cred %d\n", conn->ibc_state, conn->ibc_noops_posted,
609 conn->ibc_nsends_posted, conn->ibc_credits,
610 conn->ibc_outstanding_credits, conn->ibc_reserved_credits);
611 CDEBUG(D_CONSOLE, " comms_err %d\n", conn->ibc_comms_error);
613 CDEBUG(D_CONSOLE, " early_rxs:\n");
614 list_for_each(tmp, &conn->ibc_early_rxs)
615 kiblnd_debug_rx(list_entry(tmp, kib_rx_t, rx_list));
617 CDEBUG(D_CONSOLE, " tx_noops:\n");
618 list_for_each(tmp, &conn->ibc_tx_noops)
619 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
621 CDEBUG(D_CONSOLE, " tx_queue_nocred:\n");
622 list_for_each(tmp, &conn->ibc_tx_queue_nocred)
623 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
625 CDEBUG(D_CONSOLE, " tx_queue_rsrvd:\n");
626 list_for_each(tmp, &conn->ibc_tx_queue_rsrvd)
627 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
629 CDEBUG(D_CONSOLE, " tx_queue:\n");
630 list_for_each(tmp, &conn->ibc_tx_queue)
631 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
633 CDEBUG(D_CONSOLE, " active_txs:\n");
634 list_for_each(tmp, &conn->ibc_active_txs)
635 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
637 CDEBUG(D_CONSOLE, " rxs:\n");
638 for (i = 0; i < IBLND_RX_MSGS(conn->ibc_version); i++)
639 kiblnd_debug_rx(&conn->ibc_rxs[i]);
641 spin_unlock(&conn->ibc_lock);
645 kiblnd_translate_mtu(int value)
666 kiblnd_setup_mtu_locked(struct rdma_cm_id *cmid)
670 /* XXX There is no path record for iWARP, set by netdev->change_mtu? */
671 if (cmid->route.path_rec == NULL)
674 mtu = kiblnd_translate_mtu(*kiblnd_tunables.kib_ib_mtu);
677 cmid->route.path_rec->mtu = mtu;
680 #ifdef HAVE_OFED_IB_COMP_VECTOR
682 kiblnd_get_completion_vector(kib_conn_t *conn, int cpt)
689 vectors = conn->ibc_cmid->device->num_comp_vectors;
693 mask = cfs_cpt_cpumask(lnet_cpt_table(), cpt);
695 /* hash NID to CPU id in this partition... */
696 off = conn->ibc_peer->ibp_nid % cpumask_weight(mask);
697 for_each_cpu(i, mask) {
708 kiblnd_create_conn(kib_peer_t *peer, struct rdma_cm_id *cmid,
709 int state, int version)
712 * If the new conn is created successfully it takes over the caller's
713 * ref on 'peer'. It also "owns" 'cmid' and destroys it when it itself
714 * is destroyed. On failure, the caller's ref on 'peer' remains and
715 * she must dispose of 'cmid'. (Actually I'd block forever if I tried
716 * to destroy 'cmid' here since I'm called from the CM which still has
717 * its ref on 'cmid'). */
718 rwlock_t *glock = &kiblnd_data.kib_global_lock;
719 kib_net_t *net = peer->ibp_ni->ni_data;
721 struct ib_qp_init_attr *init_qp_attr;
722 struct kib_sched_info *sched;
730 LASSERT(net != NULL);
731 LASSERT(!in_interrupt());
735 cpt = lnet_cpt_of_nid(peer->ibp_nid);
736 sched = kiblnd_data.kib_scheds[cpt];
738 LASSERT(sched->ibs_nthreads > 0);
740 LIBCFS_CPT_ALLOC(init_qp_attr, lnet_cpt_table(), cpt,
741 sizeof(*init_qp_attr));
742 if (init_qp_attr == NULL) {
743 CERROR("Can't allocate qp_attr for %s\n",
744 libcfs_nid2str(peer->ibp_nid));
748 LIBCFS_CPT_ALLOC(conn, lnet_cpt_table(), cpt, sizeof(*conn));
750 CERROR("Can't allocate connection for %s\n",
751 libcfs_nid2str(peer->ibp_nid));
755 conn->ibc_state = IBLND_CONN_INIT;
756 conn->ibc_version = version;
757 conn->ibc_peer = peer; /* I take the caller's ref */
758 cmid->context = conn; /* for future CM callbacks */
759 conn->ibc_cmid = cmid;
761 INIT_LIST_HEAD(&conn->ibc_early_rxs);
762 INIT_LIST_HEAD(&conn->ibc_tx_noops);
763 INIT_LIST_HEAD(&conn->ibc_tx_queue);
764 INIT_LIST_HEAD(&conn->ibc_tx_queue_rsrvd);
765 INIT_LIST_HEAD(&conn->ibc_tx_queue_nocred);
766 INIT_LIST_HEAD(&conn->ibc_active_txs);
767 spin_lock_init(&conn->ibc_lock);
769 LIBCFS_CPT_ALLOC(conn->ibc_connvars, lnet_cpt_table(), cpt,
770 sizeof(*conn->ibc_connvars));
771 if (conn->ibc_connvars == NULL) {
772 CERROR("Can't allocate in-progress connection state\n");
776 write_lock_irqsave(glock, flags);
777 if (dev->ibd_failover) {
778 write_unlock_irqrestore(glock, flags);
779 CERROR("%s: failover in progress\n", dev->ibd_ifname);
783 if (dev->ibd_hdev->ibh_ibdev != cmid->device) {
784 /* wakeup failover thread and teardown connection */
785 if (kiblnd_dev_can_failover(dev)) {
786 list_add_tail(&dev->ibd_fail_list,
787 &kiblnd_data.kib_failed_devs);
788 wake_up(&kiblnd_data.kib_failover_waitq);
791 write_unlock_irqrestore(glock, flags);
792 CERROR("cmid HCA(%s), kib_dev(%s) need failover\n",
793 cmid->device->name, dev->ibd_ifname);
797 kiblnd_hdev_addref_locked(dev->ibd_hdev);
798 conn->ibc_hdev = dev->ibd_hdev;
800 kiblnd_setup_mtu_locked(cmid);
802 write_unlock_irqrestore(glock, flags);
804 LIBCFS_CPT_ALLOC(conn->ibc_rxs, lnet_cpt_table(), cpt,
805 IBLND_RX_MSGS(version) * sizeof(kib_rx_t));
806 if (conn->ibc_rxs == NULL) {
807 CERROR("Cannot allocate RX buffers\n");
811 rc = kiblnd_alloc_pages(&conn->ibc_rx_pages, cpt,
812 IBLND_RX_MSG_PAGES(version));
816 kiblnd_map_rx_descs(conn);
818 #ifdef HAVE_OFED_IB_COMP_VECTOR
819 cq = ib_create_cq(cmid->device,
820 kiblnd_cq_completion, kiblnd_cq_event, conn,
821 IBLND_CQ_ENTRIES(version),
822 kiblnd_get_completion_vector(conn, cpt));
824 cq = ib_create_cq(cmid->device,
825 kiblnd_cq_completion, kiblnd_cq_event, conn,
826 IBLND_CQ_ENTRIES(version));
829 CERROR("Can't create CQ: %ld, cqe: %d\n",
830 PTR_ERR(cq), IBLND_CQ_ENTRIES(version));
836 rc = ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
838 CERROR("Can't request completion notification: %d\n", rc);
842 init_qp_attr->event_handler = kiblnd_qp_event;
843 init_qp_attr->qp_context = conn;
844 init_qp_attr->cap.max_send_wr = IBLND_SEND_WRS(version);
845 init_qp_attr->cap.max_recv_wr = IBLND_RECV_WRS(version);
846 init_qp_attr->cap.max_send_sge = 1;
847 init_qp_attr->cap.max_recv_sge = 1;
848 init_qp_attr->sq_sig_type = IB_SIGNAL_REQ_WR;
849 init_qp_attr->qp_type = IB_QPT_RC;
850 init_qp_attr->send_cq = cq;
851 init_qp_attr->recv_cq = cq;
853 conn->ibc_sched = sched;
855 rc = rdma_create_qp(cmid, conn->ibc_hdev->ibh_pd, init_qp_attr);
857 CERROR("Can't create QP: %d, send_wr: %d, recv_wr: %d\n",
858 rc, init_qp_attr->cap.max_send_wr,
859 init_qp_attr->cap.max_recv_wr);
863 LIBCFS_FREE(init_qp_attr, sizeof(*init_qp_attr));
865 /* 1 ref for caller and each rxmsg */
866 atomic_set(&conn->ibc_refcount, 1 + IBLND_RX_MSGS(version));
867 conn->ibc_nrx = IBLND_RX_MSGS(version);
870 for (i = 0; i < IBLND_RX_MSGS(version); i++) {
871 rc = kiblnd_post_rx(&conn->ibc_rxs[i],
872 IBLND_POSTRX_NO_CREDIT);
874 CERROR("Can't post rxmsg: %d\n", rc);
876 /* Make posted receives complete */
877 kiblnd_abort_receives(conn);
879 /* correct # of posted buffers
880 * NB locking needed now I'm racing with completion */
881 spin_lock_irqsave(&sched->ibs_lock, flags);
882 conn->ibc_nrx -= IBLND_RX_MSGS(version) - i;
883 spin_unlock_irqrestore(&sched->ibs_lock, flags);
885 /* cmid will be destroyed by CM(ofed) after cm_callback
886 * returned, so we can't refer it anymore
887 * (by kiblnd_connd()->kiblnd_destroy_conn) */
888 rdma_destroy_qp(conn->ibc_cmid);
889 conn->ibc_cmid = NULL;
891 /* Drop my own and unused rxbuffer refcounts */
892 while (i++ <= IBLND_RX_MSGS(version))
893 kiblnd_conn_decref(conn);
899 /* Init successful! */
900 LASSERT (state == IBLND_CONN_ACTIVE_CONNECT ||
901 state == IBLND_CONN_PASSIVE_WAIT);
902 conn->ibc_state = state;
905 atomic_inc(&net->ibn_nconns);
909 kiblnd_destroy_conn(conn);
911 LIBCFS_FREE(init_qp_attr, sizeof(*init_qp_attr));
917 kiblnd_destroy_conn (kib_conn_t *conn)
919 struct rdma_cm_id *cmid = conn->ibc_cmid;
920 kib_peer_t *peer = conn->ibc_peer;
923 LASSERT (!in_interrupt());
924 LASSERT (atomic_read(&conn->ibc_refcount) == 0);
925 LASSERT(list_empty(&conn->ibc_early_rxs));
926 LASSERT(list_empty(&conn->ibc_tx_noops));
927 LASSERT(list_empty(&conn->ibc_tx_queue));
928 LASSERT(list_empty(&conn->ibc_tx_queue_rsrvd));
929 LASSERT(list_empty(&conn->ibc_tx_queue_nocred));
930 LASSERT(list_empty(&conn->ibc_active_txs));
931 LASSERT (conn->ibc_noops_posted == 0);
932 LASSERT (conn->ibc_nsends_posted == 0);
934 switch (conn->ibc_state) {
936 /* conn must be completely disengaged from the network */
939 case IBLND_CONN_DISCONNECTED:
940 /* connvars should have been freed already */
941 LASSERT (conn->ibc_connvars == NULL);
944 case IBLND_CONN_INIT:
948 /* conn->ibc_cmid might be destroyed by CM already */
949 if (cmid != NULL && cmid->qp != NULL)
950 rdma_destroy_qp(cmid);
952 if (conn->ibc_cq != NULL) {
953 rc = ib_destroy_cq(conn->ibc_cq);
955 CWARN("Error destroying CQ: %d\n", rc);
958 if (conn->ibc_rx_pages != NULL)
959 kiblnd_unmap_rx_descs(conn);
961 if (conn->ibc_rxs != NULL) {
962 LIBCFS_FREE(conn->ibc_rxs,
963 IBLND_RX_MSGS(conn->ibc_version) * sizeof(kib_rx_t));
966 if (conn->ibc_connvars != NULL)
967 LIBCFS_FREE(conn->ibc_connvars, sizeof(*conn->ibc_connvars));
969 if (conn->ibc_hdev != NULL)
970 kiblnd_hdev_decref(conn->ibc_hdev);
972 /* See CAVEAT EMPTOR above in kiblnd_create_conn */
973 if (conn->ibc_state != IBLND_CONN_INIT) {
974 kib_net_t *net = peer->ibp_ni->ni_data;
976 kiblnd_peer_decref(peer);
977 rdma_destroy_id(cmid);
978 atomic_dec(&net->ibn_nconns);
981 LIBCFS_FREE(conn, sizeof(*conn));
985 kiblnd_close_peer_conns_locked(kib_peer_t *peer, int why)
988 struct list_head *ctmp;
989 struct list_head *cnxt;
992 list_for_each_safe(ctmp, cnxt, &peer->ibp_conns) {
993 conn = list_entry(ctmp, kib_conn_t, ibc_list);
995 CDEBUG(D_NET, "Closing conn -> %s, "
996 "version: %x, reason: %d\n",
997 libcfs_nid2str(peer->ibp_nid),
998 conn->ibc_version, why);
1000 kiblnd_close_conn_locked(conn, why);
1008 kiblnd_close_stale_conns_locked(kib_peer_t *peer,
1009 int version, __u64 incarnation)
1012 struct list_head *ctmp;
1013 struct list_head *cnxt;
1016 list_for_each_safe(ctmp, cnxt, &peer->ibp_conns) {
1017 conn = list_entry(ctmp, kib_conn_t, ibc_list);
1019 if (conn->ibc_version == version &&
1020 conn->ibc_incarnation == incarnation)
1023 CDEBUG(D_NET, "Closing stale conn -> %s version: %x, "
1024 "incarnation:"LPX64"(%x, "LPX64")\n",
1025 libcfs_nid2str(peer->ibp_nid),
1026 conn->ibc_version, conn->ibc_incarnation,
1027 version, incarnation);
1029 kiblnd_close_conn_locked(conn, -ESTALE);
1037 kiblnd_close_matching_conns(lnet_ni_t *ni, lnet_nid_t nid)
1040 struct list_head *ptmp;
1041 struct list_head *pnxt;
1045 unsigned long flags;
1048 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
1050 if (nid != LNET_NID_ANY)
1051 lo = hi = kiblnd_nid2peerlist(nid) - kiblnd_data.kib_peers;
1054 hi = kiblnd_data.kib_peer_hash_size - 1;
1057 for (i = lo; i <= hi; i++) {
1058 list_for_each_safe(ptmp, pnxt, &kiblnd_data.kib_peers[i]) {
1060 peer = list_entry(ptmp, kib_peer_t, ibp_list);
1061 LASSERT(peer->ibp_connecting > 0 ||
1062 peer->ibp_accepting > 0 ||
1063 !list_empty(&peer->ibp_conns));
1065 if (peer->ibp_ni != ni)
1068 if (!(nid == LNET_NID_ANY || nid == peer->ibp_nid))
1071 count += kiblnd_close_peer_conns_locked(peer, 0);
1075 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
1077 /* wildcards always succeed */
1078 if (nid == LNET_NID_ANY)
1081 return (count == 0) ? -ENOENT : 0;
1085 kiblnd_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
1087 struct libcfs_ioctl_data *data = arg;
1091 case IOC_LIBCFS_GET_PEER: {
1095 rc = kiblnd_get_peer_info(ni, data->ioc_count,
1097 data->ioc_nid = nid;
1098 data->ioc_count = count;
1102 case IOC_LIBCFS_DEL_PEER: {
1103 rc = kiblnd_del_peer(ni, data->ioc_nid);
1106 case IOC_LIBCFS_GET_CONN: {
1110 conn = kiblnd_get_conn_by_idx(ni, data->ioc_count);
1116 LASSERT (conn->ibc_cmid != NULL);
1117 data->ioc_nid = conn->ibc_peer->ibp_nid;
1118 if (conn->ibc_cmid->route.path_rec == NULL)
1119 data->ioc_u32[0] = 0; /* iWarp has no path MTU */
1122 ib_mtu_enum_to_int(conn->ibc_cmid->route.path_rec->mtu);
1123 kiblnd_conn_decref(conn);
1126 case IOC_LIBCFS_CLOSE_CONNECTION: {
1127 rc = kiblnd_close_matching_conns(ni, data->ioc_nid);
1139 kiblnd_query(lnet_ni_t *ni, lnet_nid_t nid, cfs_time_t *when)
1141 cfs_time_t last_alive = 0;
1142 cfs_time_t now = cfs_time_current();
1143 rwlock_t *glock = &kiblnd_data.kib_global_lock;
1145 unsigned long flags;
1147 read_lock_irqsave(glock, flags);
1149 peer = kiblnd_find_peer_locked(nid);
1151 LASSERT(peer->ibp_connecting > 0 || /* creating conns */
1152 peer->ibp_accepting > 0 ||
1153 !list_empty(&peer->ibp_conns)); /* active conn */
1154 last_alive = peer->ibp_last_alive;
1157 read_unlock_irqrestore(glock, flags);
1159 if (last_alive != 0)
1162 /* peer is not persistent in hash, trigger peer creation
1163 * and connection establishment with a NULL tx */
1165 kiblnd_launch_tx(ni, NULL, nid);
1167 CDEBUG(D_NET, "Peer %s %p, alive %ld secs ago\n",
1168 libcfs_nid2str(nid), peer,
1169 last_alive ? cfs_duration_sec(now - last_alive) : -1);
1174 kiblnd_free_pages(kib_pages_t *p)
1176 int npages = p->ibp_npages;
1179 for (i = 0; i < npages; i++) {
1180 if (p->ibp_pages[i] != NULL)
1181 __free_page(p->ibp_pages[i]);
1184 LIBCFS_FREE(p, offsetof(kib_pages_t, ibp_pages[npages]));
1188 kiblnd_alloc_pages(kib_pages_t **pp, int cpt, int npages)
1193 LIBCFS_CPT_ALLOC(p, lnet_cpt_table(), cpt,
1194 offsetof(kib_pages_t, ibp_pages[npages]));
1196 CERROR("Can't allocate descriptor for %d pages\n", npages);
1200 memset(p, 0, offsetof(kib_pages_t, ibp_pages[npages]));
1201 p->ibp_npages = npages;
1203 for (i = 0; i < npages; i++) {
1204 p->ibp_pages[i] = cfs_page_cpt_alloc(lnet_cpt_table(), cpt,
1206 if (p->ibp_pages[i] == NULL) {
1207 CERROR("Can't allocate page %d of %d\n", i, npages);
1208 kiblnd_free_pages(p);
1218 kiblnd_unmap_rx_descs(kib_conn_t *conn)
1223 LASSERT (conn->ibc_rxs != NULL);
1224 LASSERT (conn->ibc_hdev != NULL);
1226 for (i = 0; i < IBLND_RX_MSGS(conn->ibc_version); i++) {
1227 rx = &conn->ibc_rxs[i];
1229 LASSERT (rx->rx_nob >= 0); /* not posted */
1231 kiblnd_dma_unmap_single(conn->ibc_hdev->ibh_ibdev,
1232 KIBLND_UNMAP_ADDR(rx, rx_msgunmap,
1234 IBLND_MSG_SIZE, DMA_FROM_DEVICE);
1237 kiblnd_free_pages(conn->ibc_rx_pages);
1239 conn->ibc_rx_pages = NULL;
1243 kiblnd_map_rx_descs(kib_conn_t *conn)
1251 for (pg_off = ipg = i = 0;
1252 i < IBLND_RX_MSGS(conn->ibc_version); i++) {
1253 pg = conn->ibc_rx_pages->ibp_pages[ipg];
1254 rx = &conn->ibc_rxs[i];
1257 rx->rx_msg = (kib_msg_t *)(((char *)page_address(pg)) + pg_off);
1259 rx->rx_msgaddr = kiblnd_dma_map_single(conn->ibc_hdev->ibh_ibdev,
1260 rx->rx_msg, IBLND_MSG_SIZE,
1262 LASSERT (!kiblnd_dma_mapping_error(conn->ibc_hdev->ibh_ibdev,
1264 KIBLND_UNMAP_ADDR_SET(rx, rx_msgunmap, rx->rx_msgaddr);
1266 CDEBUG(D_NET, "rx %d: %p "LPX64"("LPX64")\n",
1267 i, rx->rx_msg, rx->rx_msgaddr,
1268 (__u64)(page_to_phys(pg) + pg_off));
1270 pg_off += IBLND_MSG_SIZE;
1271 LASSERT (pg_off <= PAGE_SIZE);
1273 if (pg_off == PAGE_SIZE) {
1276 LASSERT (ipg <= IBLND_RX_MSG_PAGES(conn->ibc_version));
1282 kiblnd_unmap_tx_pool(kib_tx_pool_t *tpo)
1284 kib_hca_dev_t *hdev = tpo->tpo_hdev;
1288 LASSERT (tpo->tpo_pool.po_allocated == 0);
1293 for (i = 0; i < tpo->tpo_pool.po_size; i++) {
1294 tx = &tpo->tpo_tx_descs[i];
1295 kiblnd_dma_unmap_single(hdev->ibh_ibdev,
1296 KIBLND_UNMAP_ADDR(tx, tx_msgunmap,
1298 IBLND_MSG_SIZE, DMA_TO_DEVICE);
1301 kiblnd_hdev_decref(hdev);
1302 tpo->tpo_hdev = NULL;
1305 static kib_hca_dev_t *
1306 kiblnd_current_hdev(kib_dev_t *dev)
1308 kib_hca_dev_t *hdev;
1309 unsigned long flags;
1312 read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
1313 while (dev->ibd_failover) {
1314 read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
1316 CDEBUG(D_NET, "%s: Wait for failover\n",
1318 schedule_timeout(cfs_time_seconds(1) / 100);
1320 read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
1323 kiblnd_hdev_addref_locked(dev->ibd_hdev);
1324 hdev = dev->ibd_hdev;
1326 read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
1332 kiblnd_map_tx_pool(kib_tx_pool_t *tpo)
1334 kib_pages_t *txpgs = tpo->tpo_tx_pages;
1335 kib_pool_t *pool = &tpo->tpo_pool;
1336 kib_net_t *net = pool->po_owner->ps_net;
1344 LASSERT (net != NULL);
1348 /* pre-mapped messages are not bigger than 1 page */
1349 CLASSERT (IBLND_MSG_SIZE <= PAGE_SIZE);
1351 /* No fancy arithmetic when we do the buffer calculations */
1352 CLASSERT (PAGE_SIZE % IBLND_MSG_SIZE == 0);
1354 tpo->tpo_hdev = kiblnd_current_hdev(dev);
1356 for (ipage = page_offset = i = 0; i < pool->po_size; i++) {
1357 page = txpgs->ibp_pages[ipage];
1358 tx = &tpo->tpo_tx_descs[i];
1360 tx->tx_msg = (kib_msg_t *)(((char *)page_address(page)) +
1363 tx->tx_msgaddr = kiblnd_dma_map_single(tpo->tpo_hdev->ibh_ibdev,
1367 LASSERT(!kiblnd_dma_mapping_error(tpo->tpo_hdev->ibh_ibdev,
1369 KIBLND_UNMAP_ADDR_SET(tx, tx_msgunmap, tx->tx_msgaddr);
1371 list_add(&tx->tx_list, &pool->po_free_list);
1373 page_offset += IBLND_MSG_SIZE;
1374 LASSERT(page_offset <= PAGE_SIZE);
1376 if (page_offset == PAGE_SIZE) {
1379 LASSERT(ipage <= txpgs->ibp_npages);
1385 kiblnd_find_dma_mr(kib_hca_dev_t *hdev, __u64 addr, __u64 size)
1389 LASSERT (hdev->ibh_mrs[0] != NULL);
1391 if (hdev->ibh_nmrs == 1)
1392 return hdev->ibh_mrs[0];
1394 index = addr >> hdev->ibh_mr_shift;
1396 if (index < hdev->ibh_nmrs &&
1397 index == ((addr + size - 1) >> hdev->ibh_mr_shift))
1398 return hdev->ibh_mrs[index];
1404 kiblnd_find_rd_dma_mr(kib_hca_dev_t *hdev, kib_rdma_desc_t *rd)
1406 struct ib_mr *prev_mr;
1410 LASSERT (hdev->ibh_mrs[0] != NULL);
1412 if (*kiblnd_tunables.kib_map_on_demand > 0 &&
1413 *kiblnd_tunables.kib_map_on_demand <= rd->rd_nfrags)
1416 if (hdev->ibh_nmrs == 1)
1417 return hdev->ibh_mrs[0];
1419 for (i = 0, mr = prev_mr = NULL;
1420 i < rd->rd_nfrags; i++) {
1421 mr = kiblnd_find_dma_mr(hdev,
1422 rd->rd_frags[i].rf_addr,
1423 rd->rd_frags[i].rf_nob);
1424 if (prev_mr == NULL)
1427 if (mr == NULL || prev_mr != mr) {
1428 /* Can't covered by one single MR */
1438 kiblnd_destroy_fmr_pool(kib_fmr_pool_t *pool)
1440 LASSERT (pool->fpo_map_count == 0);
1442 if (pool->fpo_fmr_pool != NULL)
1443 ib_destroy_fmr_pool(pool->fpo_fmr_pool);
1445 if (pool->fpo_hdev != NULL)
1446 kiblnd_hdev_decref(pool->fpo_hdev);
1448 LIBCFS_FREE(pool, sizeof(kib_fmr_pool_t));
1452 kiblnd_destroy_fmr_pool_list(struct list_head *head)
1454 kib_fmr_pool_t *pool;
1456 while (!list_empty(head)) {
1457 pool = list_entry(head->next, kib_fmr_pool_t, fpo_list);
1458 list_del(&pool->fpo_list);
1459 kiblnd_destroy_fmr_pool(pool);
1463 static int kiblnd_fmr_pool_size(int ncpts)
1465 int size = *kiblnd_tunables.kib_fmr_pool_size / ncpts;
1467 return max(IBLND_FMR_POOL, size);
1470 static int kiblnd_fmr_flush_trigger(int ncpts)
1472 int size = *kiblnd_tunables.kib_fmr_flush_trigger / ncpts;
1474 return max(IBLND_FMR_POOL_FLUSH, size);
1478 kiblnd_create_fmr_pool(kib_fmr_poolset_t *fps, kib_fmr_pool_t **pp_fpo)
1480 /* FMR pool for RDMA */
1481 kib_dev_t *dev = fps->fps_net->ibn_dev;
1482 kib_fmr_pool_t *fpo;
1483 struct ib_fmr_pool_param param = {
1484 .max_pages_per_fmr = LNET_MAX_PAYLOAD/PAGE_SIZE,
1485 .page_shift = PAGE_SHIFT,
1486 .access = (IB_ACCESS_LOCAL_WRITE |
1487 IB_ACCESS_REMOTE_WRITE),
1488 .pool_size = fps->fps_pool_size,
1489 .dirty_watermark = fps->fps_flush_trigger,
1490 .flush_function = NULL,
1492 .cache = !!*kiblnd_tunables.kib_fmr_cache};
1495 LIBCFS_CPT_ALLOC(fpo, lnet_cpt_table(), fps->fps_cpt, sizeof(*fpo));
1499 fpo->fpo_hdev = kiblnd_current_hdev(dev);
1501 fpo->fpo_fmr_pool = ib_create_fmr_pool(fpo->fpo_hdev->ibh_pd, ¶m);
1502 if (IS_ERR(fpo->fpo_fmr_pool)) {
1503 rc = PTR_ERR(fpo->fpo_fmr_pool);
1504 CERROR("Failed to create FMR pool: %d\n", rc);
1506 kiblnd_hdev_decref(fpo->fpo_hdev);
1507 LIBCFS_FREE(fpo, sizeof(kib_fmr_pool_t));
1511 fpo->fpo_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
1512 fpo->fpo_owner = fps;
1519 kiblnd_fail_fmr_poolset(kib_fmr_poolset_t *fps, struct list_head *zombies)
1521 if (fps->fps_net == NULL) /* intialized? */
1524 spin_lock(&fps->fps_lock);
1526 while (!list_empty(&fps->fps_pool_list)) {
1527 kib_fmr_pool_t *fpo = list_entry(fps->fps_pool_list.next,
1528 kib_fmr_pool_t, fpo_list);
1529 fpo->fpo_failed = 1;
1530 list_del(&fpo->fpo_list);
1531 if (fpo->fpo_map_count == 0)
1532 list_add(&fpo->fpo_list, zombies);
1534 list_add(&fpo->fpo_list, &fps->fps_failed_pool_list);
1537 spin_unlock(&fps->fps_lock);
1541 kiblnd_fini_fmr_poolset(kib_fmr_poolset_t *fps)
1543 if (fps->fps_net != NULL) { /* initialized? */
1544 kiblnd_destroy_fmr_pool_list(&fps->fps_failed_pool_list);
1545 kiblnd_destroy_fmr_pool_list(&fps->fps_pool_list);
1550 kiblnd_init_fmr_poolset(kib_fmr_poolset_t *fps, int cpt, kib_net_t *net,
1551 int pool_size, int flush_trigger)
1553 kib_fmr_pool_t *fpo;
1556 memset(fps, 0, sizeof(kib_fmr_poolset_t));
1560 fps->fps_pool_size = pool_size;
1561 fps->fps_flush_trigger = flush_trigger;
1562 spin_lock_init(&fps->fps_lock);
1563 INIT_LIST_HEAD(&fps->fps_pool_list);
1564 INIT_LIST_HEAD(&fps->fps_failed_pool_list);
1566 rc = kiblnd_create_fmr_pool(fps, &fpo);
1568 list_add_tail(&fpo->fpo_list, &fps->fps_pool_list);
1574 kiblnd_fmr_pool_is_idle(kib_fmr_pool_t *fpo, cfs_time_t now)
1576 if (fpo->fpo_map_count != 0) /* still in use */
1578 if (fpo->fpo_failed)
1580 return cfs_time_aftereq(now, fpo->fpo_deadline);
1584 kiblnd_fmr_pool_unmap(kib_fmr_t *fmr, int status)
1586 struct list_head zombies = LIST_HEAD_INIT(zombies);
1587 kib_fmr_pool_t *fpo = fmr->fmr_pool;
1588 kib_fmr_poolset_t *fps = fpo->fpo_owner;
1589 cfs_time_t now = cfs_time_current();
1590 kib_fmr_pool_t *tmp;
1593 rc = ib_fmr_pool_unmap(fmr->fmr_pfmr);
1597 rc = ib_flush_fmr_pool(fpo->fpo_fmr_pool);
1601 fmr->fmr_pool = NULL;
1602 fmr->fmr_pfmr = NULL;
1604 spin_lock(&fps->fps_lock);
1605 fpo->fpo_map_count--; /* decref the pool */
1607 list_for_each_entry_safe(fpo, tmp, &fps->fps_pool_list, fpo_list) {
1608 /* the first pool is persistent */
1609 if (fps->fps_pool_list.next == &fpo->fpo_list)
1612 if (kiblnd_fmr_pool_is_idle(fpo, now)) {
1613 list_move(&fpo->fpo_list, &zombies);
1617 spin_unlock(&fps->fps_lock);
1619 if (!list_empty(&zombies))
1620 kiblnd_destroy_fmr_pool_list(&zombies);
1624 kiblnd_fmr_pool_map(kib_fmr_poolset_t *fps, __u64 *pages, int npages,
1625 __u64 iov, kib_fmr_t *fmr)
1627 struct ib_pool_fmr *pfmr;
1628 kib_fmr_pool_t *fpo;
1633 spin_lock(&fps->fps_lock);
1634 version = fps->fps_version;
1635 list_for_each_entry(fpo, &fps->fps_pool_list, fpo_list) {
1636 fpo->fpo_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
1637 fpo->fpo_map_count++;
1638 spin_unlock(&fps->fps_lock);
1640 pfmr = ib_fmr_pool_map_phys(fpo->fpo_fmr_pool,
1641 pages, npages, iov);
1642 if (likely(!IS_ERR(pfmr))) {
1643 fmr->fmr_pool = fpo;
1644 fmr->fmr_pfmr = pfmr;
1648 spin_lock(&fps->fps_lock);
1649 fpo->fpo_map_count--;
1650 if (PTR_ERR(pfmr) != -EAGAIN) {
1651 spin_unlock(&fps->fps_lock);
1652 return PTR_ERR(pfmr);
1655 /* EAGAIN and ... */
1656 if (version != fps->fps_version) {
1657 spin_unlock(&fps->fps_lock);
1662 if (fps->fps_increasing) {
1663 spin_unlock(&fps->fps_lock);
1664 CDEBUG(D_NET, "Another thread is allocating new "
1665 "FMR pool, waiting for her to complete\n");
1671 if (cfs_time_before(cfs_time_current(), fps->fps_next_retry)) {
1672 /* someone failed recently */
1673 spin_unlock(&fps->fps_lock);
1677 fps->fps_increasing = 1;
1678 spin_unlock(&fps->fps_lock);
1680 CDEBUG(D_NET, "Allocate new FMR pool\n");
1681 rc = kiblnd_create_fmr_pool(fps, &fpo);
1682 spin_lock(&fps->fps_lock);
1683 fps->fps_increasing = 0;
1686 list_add_tail(&fpo->fpo_list, &fps->fps_pool_list);
1688 fps->fps_next_retry = cfs_time_shift(IBLND_POOL_RETRY);
1690 spin_unlock(&fps->fps_lock);
1696 kiblnd_fini_pool(kib_pool_t *pool)
1698 LASSERT(list_empty(&pool->po_free_list));
1699 LASSERT(pool->po_allocated == 0);
1701 CDEBUG(D_NET, "Finalize %s pool\n", pool->po_owner->ps_name);
1705 kiblnd_init_pool(kib_poolset_t *ps, kib_pool_t *pool, int size)
1707 CDEBUG(D_NET, "Initialize %s pool\n", ps->ps_name);
1709 memset(pool, 0, sizeof(kib_pool_t));
1710 INIT_LIST_HEAD(&pool->po_free_list);
1711 pool->po_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
1712 pool->po_owner = ps;
1713 pool->po_size = size;
1717 kiblnd_destroy_pool_list(struct list_head *head)
1721 while (!list_empty(head)) {
1722 pool = list_entry(head->next, kib_pool_t, po_list);
1723 list_del(&pool->po_list);
1725 LASSERT(pool->po_owner != NULL);
1726 pool->po_owner->ps_pool_destroy(pool);
1731 kiblnd_fail_poolset(kib_poolset_t *ps, struct list_head *zombies)
1733 if (ps->ps_net == NULL) /* intialized? */
1736 spin_lock(&ps->ps_lock);
1737 while (!list_empty(&ps->ps_pool_list)) {
1738 kib_pool_t *po = list_entry(ps->ps_pool_list.next,
1739 kib_pool_t, po_list);
1741 list_del(&po->po_list);
1742 if (po->po_allocated == 0)
1743 list_add(&po->po_list, zombies);
1745 list_add(&po->po_list, &ps->ps_failed_pool_list);
1747 spin_unlock(&ps->ps_lock);
1751 kiblnd_fini_poolset(kib_poolset_t *ps)
1753 if (ps->ps_net != NULL) { /* initialized? */
1754 kiblnd_destroy_pool_list(&ps->ps_failed_pool_list);
1755 kiblnd_destroy_pool_list(&ps->ps_pool_list);
1760 kiblnd_init_poolset(kib_poolset_t *ps, int cpt,
1761 kib_net_t *net, char *name, int size,
1762 kib_ps_pool_create_t po_create,
1763 kib_ps_pool_destroy_t po_destroy,
1764 kib_ps_node_init_t nd_init,
1765 kib_ps_node_fini_t nd_fini)
1770 memset(ps, 0, sizeof(kib_poolset_t));
1774 ps->ps_pool_create = po_create;
1775 ps->ps_pool_destroy = po_destroy;
1776 ps->ps_node_init = nd_init;
1777 ps->ps_node_fini = nd_fini;
1778 ps->ps_pool_size = size;
1779 if (strlcpy(ps->ps_name, name, sizeof(ps->ps_name))
1780 >= sizeof(ps->ps_name))
1782 spin_lock_init(&ps->ps_lock);
1783 INIT_LIST_HEAD(&ps->ps_pool_list);
1784 INIT_LIST_HEAD(&ps->ps_failed_pool_list);
1786 rc = ps->ps_pool_create(ps, size, &pool);
1788 list_add(&pool->po_list, &ps->ps_pool_list);
1790 CERROR("Failed to create the first pool for %s\n", ps->ps_name);
1796 kiblnd_pool_is_idle(kib_pool_t *pool, cfs_time_t now)
1798 if (pool->po_allocated != 0) /* still in use */
1800 if (pool->po_failed)
1802 return cfs_time_aftereq(now, pool->po_deadline);
1806 kiblnd_pool_free_node(kib_pool_t *pool, struct list_head *node)
1808 struct list_head zombies = LIST_HEAD_INIT(zombies);
1809 kib_poolset_t *ps = pool->po_owner;
1811 cfs_time_t now = cfs_time_current();
1813 spin_lock(&ps->ps_lock);
1815 if (ps->ps_node_fini != NULL)
1816 ps->ps_node_fini(pool, node);
1818 LASSERT(pool->po_allocated > 0);
1819 list_add(node, &pool->po_free_list);
1820 pool->po_allocated--;
1822 list_for_each_entry_safe(pool, tmp, &ps->ps_pool_list, po_list) {
1823 /* the first pool is persistent */
1824 if (ps->ps_pool_list.next == &pool->po_list)
1827 if (kiblnd_pool_is_idle(pool, now))
1828 list_move(&pool->po_list, &zombies);
1830 spin_unlock(&ps->ps_lock);
1832 if (!list_empty(&zombies))
1833 kiblnd_destroy_pool_list(&zombies);
1837 kiblnd_pool_alloc_node(kib_poolset_t *ps)
1839 struct list_head *node;
1844 spin_lock(&ps->ps_lock);
1845 list_for_each_entry(pool, &ps->ps_pool_list, po_list) {
1846 if (list_empty(&pool->po_free_list))
1849 pool->po_allocated++;
1850 pool->po_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
1851 node = pool->po_free_list.next;
1854 if (ps->ps_node_init != NULL) {
1855 /* still hold the lock */
1856 ps->ps_node_init(pool, node);
1858 spin_unlock(&ps->ps_lock);
1862 /* no available tx pool and ... */
1863 if (ps->ps_increasing) {
1864 /* another thread is allocating a new pool */
1865 spin_unlock(&ps->ps_lock);
1866 CDEBUG(D_NET, "Another thread is allocating new "
1867 "%s pool, waiting for her to complete\n",
1873 if (cfs_time_before(cfs_time_current(), ps->ps_next_retry)) {
1874 /* someone failed recently */
1875 spin_unlock(&ps->ps_lock);
1879 ps->ps_increasing = 1;
1880 spin_unlock(&ps->ps_lock);
1882 CDEBUG(D_NET, "%s pool exhausted, allocate new pool\n", ps->ps_name);
1884 rc = ps->ps_pool_create(ps, ps->ps_pool_size, &pool);
1886 spin_lock(&ps->ps_lock);
1887 ps->ps_increasing = 0;
1889 list_add_tail(&pool->po_list, &ps->ps_pool_list);
1891 ps->ps_next_retry = cfs_time_shift(IBLND_POOL_RETRY);
1892 CERROR("Can't allocate new %s pool because out of memory\n",
1895 spin_unlock(&ps->ps_lock);
1901 kiblnd_pmr_pool_unmap(kib_phys_mr_t *pmr)
1903 kib_pmr_pool_t *ppo = pmr->pmr_pool;
1904 struct ib_mr *mr = pmr->pmr_mr;
1907 kiblnd_pool_free_node(&ppo->ppo_pool, &pmr->pmr_list);
1913 kiblnd_pmr_pool_map(kib_pmr_poolset_t *pps, kib_hca_dev_t *hdev,
1914 kib_rdma_desc_t *rd, __u64 *iova, kib_phys_mr_t **pp_pmr)
1917 struct list_head *node;
1921 node = kiblnd_pool_alloc_node(&pps->pps_poolset);
1923 CERROR("Failed to allocate PMR descriptor\n");
1927 pmr = container_of(node, kib_phys_mr_t, pmr_list);
1928 if (pmr->pmr_pool->ppo_hdev != hdev) {
1929 kiblnd_pool_free_node(&pmr->pmr_pool->ppo_pool, node);
1933 for (i = 0; i < rd->rd_nfrags; i ++) {
1934 pmr->pmr_ipb[i].addr = rd->rd_frags[i].rf_addr;
1935 pmr->pmr_ipb[i].size = rd->rd_frags[i].rf_nob;
1938 pmr->pmr_mr = ib_reg_phys_mr(hdev->ibh_pd,
1939 pmr->pmr_ipb, rd->rd_nfrags,
1940 IB_ACCESS_LOCAL_WRITE |
1941 IB_ACCESS_REMOTE_WRITE,
1943 if (!IS_ERR(pmr->pmr_mr)) {
1944 pmr->pmr_iova = *iova;
1949 rc = PTR_ERR(pmr->pmr_mr);
1950 CERROR("Failed ib_reg_phys_mr: %d\n", rc);
1953 kiblnd_pool_free_node(&pmr->pmr_pool->ppo_pool, node);
1959 kiblnd_destroy_pmr_pool(kib_pool_t *pool)
1961 kib_pmr_pool_t *ppo = container_of(pool, kib_pmr_pool_t, ppo_pool);
1964 LASSERT (pool->po_allocated == 0);
1966 while (!list_empty(&pool->po_free_list)) {
1967 pmr = list_entry(pool->po_free_list.next,
1968 kib_phys_mr_t, pmr_list);
1970 LASSERT (pmr->pmr_mr == NULL);
1971 list_del(&pmr->pmr_list);
1973 if (pmr->pmr_ipb != NULL) {
1974 LIBCFS_FREE(pmr->pmr_ipb,
1975 IBLND_MAX_RDMA_FRAGS *
1976 sizeof(struct ib_phys_buf));
1979 LIBCFS_FREE(pmr, sizeof(kib_phys_mr_t));
1982 kiblnd_fini_pool(pool);
1983 if (ppo->ppo_hdev != NULL)
1984 kiblnd_hdev_decref(ppo->ppo_hdev);
1986 LIBCFS_FREE(ppo, sizeof(kib_pmr_pool_t));
1989 static inline int kiblnd_pmr_pool_size(int ncpts)
1991 int size = *kiblnd_tunables.kib_pmr_pool_size / ncpts;
1993 return max(IBLND_PMR_POOL, size);
1997 kiblnd_create_pmr_pool(kib_poolset_t *ps, int size, kib_pool_t **pp_po)
1999 struct kib_pmr_pool *ppo;
2000 struct kib_pool *pool;
2004 LIBCFS_CPT_ALLOC(ppo, lnet_cpt_table(),
2005 ps->ps_cpt, sizeof(kib_pmr_pool_t));
2007 CERROR("Failed to allocate PMR pool\n");
2011 pool = &ppo->ppo_pool;
2012 kiblnd_init_pool(ps, pool, size);
2014 for (i = 0; i < size; i++) {
2015 LIBCFS_CPT_ALLOC(pmr, lnet_cpt_table(),
2016 ps->ps_cpt, sizeof(kib_phys_mr_t));
2020 pmr->pmr_pool = ppo;
2021 LIBCFS_CPT_ALLOC(pmr->pmr_ipb, lnet_cpt_table(), ps->ps_cpt,
2022 IBLND_MAX_RDMA_FRAGS * sizeof(*pmr->pmr_ipb));
2023 if (pmr->pmr_ipb == NULL)
2026 list_add(&pmr->pmr_list, &pool->po_free_list);
2030 ps->ps_pool_destroy(pool);
2034 ppo->ppo_hdev = kiblnd_current_hdev(ps->ps_net->ibn_dev);
2040 kiblnd_destroy_tx_pool(kib_pool_t *pool)
2042 kib_tx_pool_t *tpo = container_of(pool, kib_tx_pool_t, tpo_pool);
2045 LASSERT (pool->po_allocated == 0);
2047 if (tpo->tpo_tx_pages != NULL) {
2048 kiblnd_unmap_tx_pool(tpo);
2049 kiblnd_free_pages(tpo->tpo_tx_pages);
2052 if (tpo->tpo_tx_descs == NULL)
2055 for (i = 0; i < pool->po_size; i++) {
2056 kib_tx_t *tx = &tpo->tpo_tx_descs[i];
2058 list_del(&tx->tx_list);
2059 if (tx->tx_pages != NULL)
2060 LIBCFS_FREE(tx->tx_pages,
2062 sizeof(*tx->tx_pages));
2063 if (tx->tx_frags != NULL)
2064 LIBCFS_FREE(tx->tx_frags,
2065 IBLND_MAX_RDMA_FRAGS *
2066 sizeof(*tx->tx_frags));
2067 if (tx->tx_wrq != NULL)
2068 LIBCFS_FREE(tx->tx_wrq,
2069 (1 + IBLND_MAX_RDMA_FRAGS) *
2070 sizeof(*tx->tx_wrq));
2071 if (tx->tx_sge != NULL)
2072 LIBCFS_FREE(tx->tx_sge,
2073 (1 + IBLND_MAX_RDMA_FRAGS) *
2074 sizeof(*tx->tx_sge));
2075 if (tx->tx_rd != NULL)
2076 LIBCFS_FREE(tx->tx_rd,
2077 offsetof(kib_rdma_desc_t,
2078 rd_frags[IBLND_MAX_RDMA_FRAGS]));
2081 LIBCFS_FREE(tpo->tpo_tx_descs,
2082 pool->po_size * sizeof(kib_tx_t));
2084 kiblnd_fini_pool(pool);
2085 LIBCFS_FREE(tpo, sizeof(kib_tx_pool_t));
2088 static int kiblnd_tx_pool_size(int ncpts)
2090 int ntx = *kiblnd_tunables.kib_ntx / ncpts;
2092 return max(IBLND_TX_POOL, ntx);
2096 kiblnd_create_tx_pool(kib_poolset_t *ps, int size, kib_pool_t **pp_po)
2103 LIBCFS_CPT_ALLOC(tpo, lnet_cpt_table(), ps->ps_cpt, sizeof(*tpo));
2105 CERROR("Failed to allocate TX pool\n");
2109 pool = &tpo->tpo_pool;
2110 kiblnd_init_pool(ps, pool, size);
2111 tpo->tpo_tx_descs = NULL;
2112 tpo->tpo_tx_pages = NULL;
2114 npg = (size * IBLND_MSG_SIZE + PAGE_SIZE - 1) / PAGE_SIZE;
2115 if (kiblnd_alloc_pages(&tpo->tpo_tx_pages, ps->ps_cpt, npg) != 0) {
2116 CERROR("Can't allocate tx pages: %d\n", npg);
2117 LIBCFS_FREE(tpo, sizeof(kib_tx_pool_t));
2121 LIBCFS_CPT_ALLOC(tpo->tpo_tx_descs, lnet_cpt_table(), ps->ps_cpt,
2122 size * sizeof(kib_tx_t));
2123 if (tpo->tpo_tx_descs == NULL) {
2124 CERROR("Can't allocate %d tx descriptors\n", size);
2125 ps->ps_pool_destroy(pool);
2129 memset(tpo->tpo_tx_descs, 0, size * sizeof(kib_tx_t));
2131 for (i = 0; i < size; i++) {
2132 kib_tx_t *tx = &tpo->tpo_tx_descs[i];
2135 if (ps->ps_net->ibn_fmr_ps != NULL) {
2136 LIBCFS_CPT_ALLOC(tx->tx_pages,
2137 lnet_cpt_table(), ps->ps_cpt,
2138 LNET_MAX_IOV * sizeof(*tx->tx_pages));
2139 if (tx->tx_pages == NULL)
2143 LIBCFS_CPT_ALLOC(tx->tx_frags, lnet_cpt_table(), ps->ps_cpt,
2144 IBLND_MAX_RDMA_FRAGS * sizeof(*tx->tx_frags));
2145 if (tx->tx_frags == NULL)
2148 sg_init_table(tx->tx_frags, IBLND_MAX_RDMA_FRAGS);
2150 LIBCFS_CPT_ALLOC(tx->tx_wrq, lnet_cpt_table(), ps->ps_cpt,
2151 (1 + IBLND_MAX_RDMA_FRAGS) *
2152 sizeof(*tx->tx_wrq));
2153 if (tx->tx_wrq == NULL)
2156 LIBCFS_CPT_ALLOC(tx->tx_sge, lnet_cpt_table(), ps->ps_cpt,
2157 (1 + IBLND_MAX_RDMA_FRAGS) *
2158 sizeof(*tx->tx_sge));
2159 if (tx->tx_sge == NULL)
2162 LIBCFS_CPT_ALLOC(tx->tx_rd, lnet_cpt_table(), ps->ps_cpt,
2163 offsetof(kib_rdma_desc_t,
2164 rd_frags[IBLND_MAX_RDMA_FRAGS]));
2165 if (tx->tx_rd == NULL)
2170 kiblnd_map_tx_pool(tpo);
2175 ps->ps_pool_destroy(pool);
2180 kiblnd_tx_init(kib_pool_t *pool, struct list_head *node)
2182 kib_tx_poolset_t *tps = container_of(pool->po_owner, kib_tx_poolset_t,
2184 kib_tx_t *tx = list_entry(node, kib_tx_t, tx_list);
2186 tx->tx_cookie = tps->tps_next_tx_cookie++;
2190 kiblnd_net_fini_pools(kib_net_t *net)
2194 cfs_cpt_for_each(i, lnet_cpt_table()) {
2195 kib_tx_poolset_t *tps;
2196 kib_fmr_poolset_t *fps;
2197 kib_pmr_poolset_t *pps;
2199 if (net->ibn_tx_ps != NULL) {
2200 tps = net->ibn_tx_ps[i];
2201 kiblnd_fini_poolset(&tps->tps_poolset);
2204 if (net->ibn_fmr_ps != NULL) {
2205 fps = net->ibn_fmr_ps[i];
2206 kiblnd_fini_fmr_poolset(fps);
2209 if (net->ibn_pmr_ps != NULL) {
2210 pps = net->ibn_pmr_ps[i];
2211 kiblnd_fini_poolset(&pps->pps_poolset);
2215 if (net->ibn_tx_ps != NULL) {
2216 cfs_percpt_free(net->ibn_tx_ps);
2217 net->ibn_tx_ps = NULL;
2220 if (net->ibn_fmr_ps != NULL) {
2221 cfs_percpt_free(net->ibn_fmr_ps);
2222 net->ibn_fmr_ps = NULL;
2225 if (net->ibn_pmr_ps != NULL) {
2226 cfs_percpt_free(net->ibn_pmr_ps);
2227 net->ibn_pmr_ps = NULL;
2232 kiblnd_net_init_pools(kib_net_t *net, __u32 *cpts, int ncpts)
2234 unsigned long flags;
2239 read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
2240 if (*kiblnd_tunables.kib_map_on_demand == 0 &&
2241 net->ibn_dev->ibd_hdev->ibh_nmrs == 1) {
2242 read_unlock_irqrestore(&kiblnd_data.kib_global_lock,
2244 goto create_tx_pool;
2247 read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
2249 if (*kiblnd_tunables.kib_fmr_pool_size <
2250 *kiblnd_tunables.kib_ntx / 4) {
2251 CERROR("Can't set fmr pool size (%d) < ntx / 4(%d)\n",
2252 *kiblnd_tunables.kib_fmr_pool_size,
2253 *kiblnd_tunables.kib_ntx / 4);
2258 /* TX pool must be created later than FMR/PMR, see LU-2268
2260 LASSERT(net->ibn_tx_ps == NULL);
2262 /* premapping can fail if ibd_nmr > 1, so we always create
2263 * FMR/PMR pool and map-on-demand if premapping failed */
2265 net->ibn_fmr_ps = cfs_percpt_alloc(lnet_cpt_table(),
2266 sizeof(kib_fmr_poolset_t));
2267 if (net->ibn_fmr_ps == NULL) {
2268 CERROR("Failed to allocate FMR pool array\n");
2273 for (i = 0; i < ncpts; i++) {
2274 cpt = (cpts == NULL) ? i : cpts[i];
2275 rc = kiblnd_init_fmr_poolset(net->ibn_fmr_ps[cpt], cpt, net,
2276 kiblnd_fmr_pool_size(ncpts),
2277 kiblnd_fmr_flush_trigger(ncpts));
2278 if (rc == -ENOSYS && i == 0) /* no FMR */
2279 break; /* create PMR pool */
2281 if (rc != 0) { /* a real error */
2282 CERROR("Can't initialize FMR pool for CPT %d: %d\n",
2289 LASSERT(i == ncpts);
2290 goto create_tx_pool;
2293 cfs_percpt_free(net->ibn_fmr_ps);
2294 net->ibn_fmr_ps = NULL;
2296 CWARN("Device does not support FMR, failing back to PMR\n");
2298 if (*kiblnd_tunables.kib_pmr_pool_size <
2299 *kiblnd_tunables.kib_ntx / 4) {
2300 CERROR("Can't set pmr pool size (%d) < ntx / 4(%d)\n",
2301 *kiblnd_tunables.kib_pmr_pool_size,
2302 *kiblnd_tunables.kib_ntx / 4);
2307 net->ibn_pmr_ps = cfs_percpt_alloc(lnet_cpt_table(),
2308 sizeof(kib_pmr_poolset_t));
2309 if (net->ibn_pmr_ps == NULL) {
2310 CERROR("Failed to allocate PMR pool array\n");
2315 for (i = 0; i < ncpts; i++) {
2316 cpt = (cpts == NULL) ? i : cpts[i];
2317 rc = kiblnd_init_poolset(&net->ibn_pmr_ps[cpt]->pps_poolset,
2319 kiblnd_pmr_pool_size(ncpts),
2320 kiblnd_create_pmr_pool,
2321 kiblnd_destroy_pmr_pool, NULL, NULL);
2323 CERROR("Can't initialize PMR pool for CPT %d: %d\n",
2330 net->ibn_tx_ps = cfs_percpt_alloc(lnet_cpt_table(),
2331 sizeof(kib_tx_poolset_t));
2332 if (net->ibn_tx_ps == NULL) {
2333 CERROR("Failed to allocate tx pool array\n");
2338 for (i = 0; i < ncpts; i++) {
2339 cpt = (cpts == NULL) ? i : cpts[i];
2340 rc = kiblnd_init_poolset(&net->ibn_tx_ps[cpt]->tps_poolset,
2342 kiblnd_tx_pool_size(ncpts),
2343 kiblnd_create_tx_pool,
2344 kiblnd_destroy_tx_pool,
2345 kiblnd_tx_init, NULL);
2347 CERROR("Can't initialize TX pool for CPT %d: %d\n",
2355 kiblnd_net_fini_pools(net);
2361 kiblnd_hdev_get_attr(kib_hca_dev_t *hdev)
2363 struct ib_device_attr *attr;
2366 /* It's safe to assume a HCA can handle a page size
2367 * matching that of the native system */
2368 hdev->ibh_page_shift = PAGE_SHIFT;
2369 hdev->ibh_page_size = 1 << PAGE_SHIFT;
2370 hdev->ibh_page_mask = ~((__u64)hdev->ibh_page_size - 1);
2372 LIBCFS_ALLOC(attr, sizeof(*attr));
2374 CERROR("Out of memory\n");
2378 rc = ib_query_device(hdev->ibh_ibdev, attr);
2380 hdev->ibh_mr_size = attr->max_mr_size;
2382 LIBCFS_FREE(attr, sizeof(*attr));
2385 CERROR("Failed to query IB device: %d\n", rc);
2389 if (hdev->ibh_mr_size == ~0ULL) {
2390 hdev->ibh_mr_shift = 64;
2394 for (hdev->ibh_mr_shift = 0;
2395 hdev->ibh_mr_shift < 64; hdev->ibh_mr_shift ++) {
2396 if (hdev->ibh_mr_size == (1ULL << hdev->ibh_mr_shift) ||
2397 hdev->ibh_mr_size == (1ULL << hdev->ibh_mr_shift) - 1)
2401 CERROR("Invalid mr size: "LPX64"\n", hdev->ibh_mr_size);
2406 kiblnd_hdev_cleanup_mrs(kib_hca_dev_t *hdev)
2410 if (hdev->ibh_nmrs == 0 || hdev->ibh_mrs == NULL)
2413 for (i = 0; i < hdev->ibh_nmrs; i++) {
2414 if (hdev->ibh_mrs[i] == NULL)
2417 ib_dereg_mr(hdev->ibh_mrs[i]);
2420 LIBCFS_FREE(hdev->ibh_mrs, sizeof(*hdev->ibh_mrs) * hdev->ibh_nmrs);
2421 hdev->ibh_mrs = NULL;
2426 kiblnd_hdev_destroy(kib_hca_dev_t *hdev)
2428 kiblnd_hdev_cleanup_mrs(hdev);
2430 if (hdev->ibh_pd != NULL)
2431 ib_dealloc_pd(hdev->ibh_pd);
2433 if (hdev->ibh_cmid != NULL)
2434 rdma_destroy_id(hdev->ibh_cmid);
2436 LIBCFS_FREE(hdev, sizeof(*hdev));
2440 kiblnd_hdev_setup_mrs(kib_hca_dev_t *hdev)
2447 int acflags = IB_ACCESS_LOCAL_WRITE |
2448 IB_ACCESS_REMOTE_WRITE;
2450 rc = kiblnd_hdev_get_attr(hdev);
2454 if (hdev->ibh_mr_shift == 64) {
2455 LIBCFS_ALLOC(hdev->ibh_mrs, 1 * sizeof(*hdev->ibh_mrs));
2456 if (hdev->ibh_mrs == NULL) {
2457 CERROR("Failed to allocate MRs table\n");
2461 hdev->ibh_mrs[0] = NULL;
2464 mr = ib_get_dma_mr(hdev->ibh_pd, acflags);
2466 CERROR("Failed ib_get_dma_mr : %ld\n", PTR_ERR(mr));
2467 kiblnd_hdev_cleanup_mrs(hdev);
2471 hdev->ibh_mrs[0] = mr;
2476 mr_size = (1ULL << hdev->ibh_mr_shift);
2477 mm_size = (unsigned long)high_memory - PAGE_OFFSET;
2479 hdev->ibh_nmrs = (int)((mm_size + mr_size - 1) >> hdev->ibh_mr_shift);
2481 if (hdev->ibh_mr_shift < 32 || hdev->ibh_nmrs > 1024) {
2482 /* it's 4T..., assume we will re-code at that time */
2483 CERROR("Can't support memory size: x"LPX64
2484 " with MR size: x"LPX64"\n", mm_size, mr_size);
2488 /* create an array of MRs to cover all memory */
2489 LIBCFS_ALLOC(hdev->ibh_mrs, sizeof(*hdev->ibh_mrs) * hdev->ibh_nmrs);
2490 if (hdev->ibh_mrs == NULL) {
2491 CERROR("Failed to allocate MRs' table\n");
2495 memset(hdev->ibh_mrs, 0, sizeof(*hdev->ibh_mrs) * hdev->ibh_nmrs);
2497 for (i = 0; i < hdev->ibh_nmrs; i++) {
2498 struct ib_phys_buf ipb;
2501 ipb.size = hdev->ibh_mr_size;
2502 ipb.addr = i * mr_size;
2505 mr = ib_reg_phys_mr(hdev->ibh_pd, &ipb, 1, acflags, &iova);
2507 CERROR("Failed ib_reg_phys_mr addr "LPX64
2508 " size "LPX64" : %ld\n",
2509 ipb.addr, ipb.size, PTR_ERR(mr));
2510 kiblnd_hdev_cleanup_mrs(hdev);
2514 LASSERT (iova == ipb.addr);
2516 hdev->ibh_mrs[i] = mr;
2520 if (hdev->ibh_mr_size != ~0ULL || hdev->ibh_nmrs != 1)
2521 LCONSOLE_INFO("Register global MR array, MR size: "
2522 LPX64", array size: %d\n",
2523 hdev->ibh_mr_size, hdev->ibh_nmrs);
2528 kiblnd_dummy_callback(struct rdma_cm_id *cmid, struct rdma_cm_event *event)
2534 kiblnd_dev_need_failover(kib_dev_t *dev)
2536 struct rdma_cm_id *cmid;
2537 struct sockaddr_in srcaddr;
2538 struct sockaddr_in dstaddr;
2541 if (dev->ibd_hdev == NULL || /* initializing */
2542 dev->ibd_hdev->ibh_cmid == NULL || /* listener is dead */
2543 *kiblnd_tunables.kib_dev_failover > 1) /* debugging */
2546 /* XXX: it's UGLY, but I don't have better way to find
2547 * ib-bonding HCA failover because:
2549 * a. no reliable CM event for HCA failover...
2550 * b. no OFED API to get ib_device for current net_device...
2552 * We have only two choices at this point:
2554 * a. rdma_bind_addr(), it will conflict with listener cmid
2555 * b. rdma_resolve_addr() to zero addr */
2556 cmid = kiblnd_rdma_create_id(kiblnd_dummy_callback, dev, RDMA_PS_TCP,
2560 CERROR("Failed to create cmid for failover: %d\n", rc);
2564 memset(&srcaddr, 0, sizeof(srcaddr));
2565 srcaddr.sin_family = AF_INET;
2566 srcaddr.sin_addr.s_addr = (__force u32)htonl(dev->ibd_ifip);
2568 memset(&dstaddr, 0, sizeof(dstaddr));
2569 dstaddr.sin_family = AF_INET;
2570 rc = rdma_resolve_addr(cmid, (struct sockaddr *)&srcaddr,
2571 (struct sockaddr *)&dstaddr, 1);
2572 if (rc != 0 || cmid->device == NULL) {
2573 CERROR("Failed to bind %s:%pI4h to device(%p): %d\n",
2574 dev->ibd_ifname, &dev->ibd_ifip,
2576 rdma_destroy_id(cmid);
2580 rc = dev->ibd_hdev->ibh_ibdev != cmid->device; /* true for failover */
2581 rdma_destroy_id(cmid);
2586 kiblnd_dev_failover(kib_dev_t *dev)
2588 struct list_head zombie_tpo = LIST_HEAD_INIT(zombie_tpo);
2589 struct list_head zombie_ppo = LIST_HEAD_INIT(zombie_ppo);
2590 struct list_head zombie_fpo = LIST_HEAD_INIT(zombie_fpo);
2591 struct rdma_cm_id *cmid = NULL;
2592 kib_hca_dev_t *hdev = NULL;
2596 struct sockaddr_in addr;
2597 unsigned long flags;
2601 LASSERT (*kiblnd_tunables.kib_dev_failover > 1 ||
2602 dev->ibd_can_failover ||
2603 dev->ibd_hdev == NULL);
2605 rc = kiblnd_dev_need_failover(dev);
2609 if (dev->ibd_hdev != NULL &&
2610 dev->ibd_hdev->ibh_cmid != NULL) {
2611 /* XXX it's not good to close old listener at here,
2612 * because we can fail to create new listener.
2613 * But we have to close it now, otherwise rdma_bind_addr
2614 * will return EADDRINUSE... How crap! */
2615 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
2617 cmid = dev->ibd_hdev->ibh_cmid;
2618 /* make next schedule of kiblnd_dev_need_failover()
2619 * return 1 for me */
2620 dev->ibd_hdev->ibh_cmid = NULL;
2621 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
2623 rdma_destroy_id(cmid);
2626 cmid = kiblnd_rdma_create_id(kiblnd_cm_callback, dev, RDMA_PS_TCP,
2630 CERROR("Failed to create cmid for failover: %d\n", rc);
2634 memset(&addr, 0, sizeof(addr));
2635 addr.sin_family = AF_INET;
2636 addr.sin_addr.s_addr = (__force u32)htonl(dev->ibd_ifip);
2637 addr.sin_port = htons(*kiblnd_tunables.kib_service);
2639 /* Bind to failover device or port */
2640 rc = rdma_bind_addr(cmid, (struct sockaddr *)&addr);
2641 if (rc != 0 || cmid->device == NULL) {
2642 CERROR("Failed to bind %s:%pI4h to device(%p): %d\n",
2643 dev->ibd_ifname, &dev->ibd_ifip,
2645 rdma_destroy_id(cmid);
2649 LIBCFS_ALLOC(hdev, sizeof(*hdev));
2651 CERROR("Failed to allocate kib_hca_dev\n");
2652 rdma_destroy_id(cmid);
2657 atomic_set(&hdev->ibh_ref, 1);
2658 hdev->ibh_dev = dev;
2659 hdev->ibh_cmid = cmid;
2660 hdev->ibh_ibdev = cmid->device;
2662 pd = ib_alloc_pd(cmid->device);
2665 CERROR("Can't allocate PD: %d\n", rc);
2671 rc = rdma_listen(cmid, 0);
2673 CERROR("Can't start new listener: %d\n", rc);
2677 rc = kiblnd_hdev_setup_mrs(hdev);
2679 CERROR("Can't setup device: %d\n", rc);
2683 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
2685 old = dev->ibd_hdev;
2686 dev->ibd_hdev = hdev; /* take over the refcount */
2689 list_for_each_entry(net, &dev->ibd_nets, ibn_list) {
2690 cfs_cpt_for_each(i, lnet_cpt_table()) {
2691 kiblnd_fail_poolset(&net->ibn_tx_ps[i]->tps_poolset,
2694 if (net->ibn_fmr_ps != NULL) {
2695 kiblnd_fail_fmr_poolset(net->ibn_fmr_ps[i],
2698 } else if (net->ibn_pmr_ps != NULL) {
2699 kiblnd_fail_poolset(&net->ibn_pmr_ps[i]->
2700 pps_poolset, &zombie_ppo);
2705 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
2707 if (!list_empty(&zombie_tpo))
2708 kiblnd_destroy_pool_list(&zombie_tpo);
2709 if (!list_empty(&zombie_ppo))
2710 kiblnd_destroy_pool_list(&zombie_ppo);
2711 if (!list_empty(&zombie_fpo))
2712 kiblnd_destroy_fmr_pool_list(&zombie_fpo);
2714 kiblnd_hdev_decref(hdev);
2717 dev->ibd_failed_failover++;
2719 dev->ibd_failed_failover = 0;
2725 kiblnd_destroy_dev (kib_dev_t *dev)
2727 LASSERT (dev->ibd_nnets == 0);
2728 LASSERT(list_empty(&dev->ibd_nets));
2730 list_del(&dev->ibd_fail_list);
2731 list_del(&dev->ibd_list);
2733 if (dev->ibd_hdev != NULL)
2734 kiblnd_hdev_decref(dev->ibd_hdev);
2736 LIBCFS_FREE(dev, sizeof(*dev));
2740 kiblnd_create_dev(char *ifname)
2742 struct net_device *netdev;
2749 rc = lnet_ipif_query(ifname, &up, &ip, &netmask);
2751 CERROR("Can't query IPoIB interface %s: %d\n",
2757 CERROR("Can't query IPoIB interface %s: it's down\n", ifname);
2761 LIBCFS_ALLOC(dev, sizeof(*dev));
2765 memset(dev, 0, sizeof(*dev));
2766 #ifdef HAVE_DEV_GET_BY_NAME_2ARG
2767 netdev = dev_get_by_name(&init_net, ifname);
2769 netdev = dev_get_by_name(ifname);
2771 if (netdev == NULL) {
2772 dev->ibd_can_failover = 0;
2774 dev->ibd_can_failover = !!(netdev->flags & IFF_MASTER);
2778 INIT_LIST_HEAD(&dev->ibd_nets);
2779 INIT_LIST_HEAD(&dev->ibd_list); /* not yet in kib_devs */
2780 INIT_LIST_HEAD(&dev->ibd_fail_list);
2782 strcpy(&dev->ibd_ifname[0], ifname);
2784 /* initialize the device */
2785 rc = kiblnd_dev_failover(dev);
2787 CERROR("Can't initialize device: %d\n", rc);
2788 LIBCFS_FREE(dev, sizeof(*dev));
2792 list_add_tail(&dev->ibd_list,
2793 &kiblnd_data.kib_devs);
2798 kiblnd_base_shutdown(void)
2800 struct kib_sched_info *sched;
2803 LASSERT(list_empty(&kiblnd_data.kib_devs));
2805 CDEBUG(D_MALLOC, "before LND base cleanup: kmem %d\n",
2806 atomic_read(&libcfs_kmemory));
2808 switch (kiblnd_data.kib_init) {
2812 case IBLND_INIT_ALL:
2813 case IBLND_INIT_DATA:
2814 LASSERT (kiblnd_data.kib_peers != NULL);
2815 for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) {
2816 LASSERT(list_empty(&kiblnd_data.kib_peers[i]));
2818 LASSERT(list_empty(&kiblnd_data.kib_connd_zombies));
2819 LASSERT(list_empty(&kiblnd_data.kib_connd_conns));
2821 /* flag threads to terminate; wake and wait for them to die */
2822 kiblnd_data.kib_shutdown = 1;
2824 /* NB: we really want to stop scheduler threads net by net
2825 * instead of the whole module, this should be improved
2826 * with dynamic configuration LNet */
2827 cfs_percpt_for_each(sched, i, kiblnd_data.kib_scheds)
2828 wake_up_all(&sched->ibs_waitq);
2830 wake_up_all(&kiblnd_data.kib_connd_waitq);
2831 wake_up_all(&kiblnd_data.kib_failover_waitq);
2834 while (atomic_read(&kiblnd_data.kib_nthreads) != 0) {
2837 CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET,
2838 "Waiting for %d threads to terminate\n",
2839 atomic_read(&kiblnd_data.kib_nthreads));
2840 set_current_state(TASK_UNINTERRUPTIBLE);
2841 schedule_timeout(cfs_time_seconds(1));
2846 case IBLND_INIT_NOTHING:
2850 if (kiblnd_data.kib_peers != NULL) {
2851 LIBCFS_FREE(kiblnd_data.kib_peers,
2852 sizeof(struct list_head) *
2853 kiblnd_data.kib_peer_hash_size);
2856 if (kiblnd_data.kib_scheds != NULL)
2857 cfs_percpt_free(kiblnd_data.kib_scheds);
2859 CDEBUG(D_MALLOC, "after LND base cleanup: kmem %d\n",
2860 atomic_read(&libcfs_kmemory));
2862 kiblnd_data.kib_init = IBLND_INIT_NOTHING;
2863 module_put(THIS_MODULE);
2867 kiblnd_shutdown (lnet_ni_t *ni)
2869 kib_net_t *net = ni->ni_data;
2870 rwlock_t *g_lock = &kiblnd_data.kib_global_lock;
2872 unsigned long flags;
2874 LASSERT(kiblnd_data.kib_init == IBLND_INIT_ALL);
2879 CDEBUG(D_MALLOC, "before LND net cleanup: kmem %d\n",
2880 atomic_read(&libcfs_kmemory));
2882 write_lock_irqsave(g_lock, flags);
2883 net->ibn_shutdown = 1;
2884 write_unlock_irqrestore(g_lock, flags);
2886 switch (net->ibn_init) {
2890 case IBLND_INIT_ALL:
2891 /* nuke all existing peers within this net */
2892 kiblnd_del_peer(ni, LNET_NID_ANY);
2894 /* Wait for all peer state to clean up */
2896 while (atomic_read(&net->ibn_npeers) != 0) {
2899 CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET,
2900 "%s: waiting for %d peers to disconnect\n",
2901 libcfs_nid2str(ni->ni_nid),
2902 atomic_read(&net->ibn_npeers));
2903 set_current_state(TASK_UNINTERRUPTIBLE);
2904 schedule_timeout(cfs_time_seconds(1));
2907 kiblnd_net_fini_pools(net);
2909 write_lock_irqsave(g_lock, flags);
2910 LASSERT(net->ibn_dev->ibd_nnets > 0);
2911 net->ibn_dev->ibd_nnets--;
2912 list_del(&net->ibn_list);
2913 write_unlock_irqrestore(g_lock, flags);
2917 case IBLND_INIT_NOTHING:
2918 LASSERT (atomic_read(&net->ibn_nconns) == 0);
2920 if (net->ibn_dev != NULL &&
2921 net->ibn_dev->ibd_nnets == 0)
2922 kiblnd_destroy_dev(net->ibn_dev);
2927 CDEBUG(D_MALLOC, "after LND net cleanup: kmem %d\n",
2928 atomic_read(&libcfs_kmemory));
2930 net->ibn_init = IBLND_INIT_NOTHING;
2933 LIBCFS_FREE(net, sizeof(*net));
2936 if (list_empty(&kiblnd_data.kib_devs))
2937 kiblnd_base_shutdown();
2942 kiblnd_base_startup(void)
2944 struct kib_sched_info *sched;
2948 LASSERT(kiblnd_data.kib_init == IBLND_INIT_NOTHING);
2950 try_module_get(THIS_MODULE);
2951 memset(&kiblnd_data, 0, sizeof(kiblnd_data)); /* zero pointers, flags etc */
2953 rwlock_init(&kiblnd_data.kib_global_lock);
2955 INIT_LIST_HEAD(&kiblnd_data.kib_devs);
2956 INIT_LIST_HEAD(&kiblnd_data.kib_failed_devs);
2958 kiblnd_data.kib_peer_hash_size = IBLND_PEER_HASH_SIZE;
2959 LIBCFS_ALLOC(kiblnd_data.kib_peers,
2960 sizeof(struct list_head) *
2961 kiblnd_data.kib_peer_hash_size);
2962 if (kiblnd_data.kib_peers == NULL)
2965 for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++)
2966 INIT_LIST_HEAD(&kiblnd_data.kib_peers[i]);
2968 spin_lock_init(&kiblnd_data.kib_connd_lock);
2969 INIT_LIST_HEAD(&kiblnd_data.kib_connd_conns);
2970 INIT_LIST_HEAD(&kiblnd_data.kib_connd_zombies);
2971 init_waitqueue_head(&kiblnd_data.kib_connd_waitq);
2972 init_waitqueue_head(&kiblnd_data.kib_failover_waitq);
2974 kiblnd_data.kib_scheds = cfs_percpt_alloc(lnet_cpt_table(),
2976 if (kiblnd_data.kib_scheds == NULL)
2979 cfs_percpt_for_each(sched, i, kiblnd_data.kib_scheds) {
2982 spin_lock_init(&sched->ibs_lock);
2983 INIT_LIST_HEAD(&sched->ibs_conns);
2984 init_waitqueue_head(&sched->ibs_waitq);
2986 nthrs = cfs_cpt_weight(lnet_cpt_table(), i);
2987 if (*kiblnd_tunables.kib_nscheds > 0) {
2988 nthrs = min(nthrs, *kiblnd_tunables.kib_nscheds);
2990 /* max to half of CPUs, another half is reserved for
2991 * upper layer modules */
2992 nthrs = min(max(IBLND_N_SCHED, nthrs >> 1), nthrs);
2995 sched->ibs_nthreads_max = nthrs;
2999 kiblnd_data.kib_error_qpa.qp_state = IB_QPS_ERR;
3001 /* lists/ptrs/locks initialised */
3002 kiblnd_data.kib_init = IBLND_INIT_DATA;
3003 /*****************************************************/
3005 rc = kiblnd_thread_start(kiblnd_connd, NULL, "kiblnd_connd");
3007 CERROR("Can't spawn o2iblnd connd: %d\n", rc);
3011 if (*kiblnd_tunables.kib_dev_failover != 0)
3012 rc = kiblnd_thread_start(kiblnd_failover_thread, NULL,
3016 CERROR("Can't spawn o2iblnd failover thread: %d\n", rc);
3020 /* flag everything initialised */
3021 kiblnd_data.kib_init = IBLND_INIT_ALL;
3022 /*****************************************************/
3027 kiblnd_base_shutdown();
3032 kiblnd_start_schedulers(struct kib_sched_info *sched)
3038 if (sched->ibs_nthreads == 0) {
3039 if (*kiblnd_tunables.kib_nscheds > 0) {
3040 nthrs = sched->ibs_nthreads_max;
3042 nthrs = cfs_cpt_weight(lnet_cpt_table(),
3044 nthrs = min(max(IBLND_N_SCHED, nthrs >> 1), nthrs);
3045 nthrs = min(IBLND_N_SCHED_HIGH, nthrs);
3048 LASSERT(sched->ibs_nthreads <= sched->ibs_nthreads_max);
3049 /* increase one thread if there is new interface */
3050 nthrs = (sched->ibs_nthreads < sched->ibs_nthreads_max);
3053 for (i = 0; i < nthrs; i++) {
3056 id = KIB_THREAD_ID(sched->ibs_cpt, sched->ibs_nthreads + i);
3057 snprintf(name, sizeof(name), "kiblnd_sd_%02ld_%02ld",
3058 KIB_THREAD_CPT(id), KIB_THREAD_TID(id));
3059 rc = kiblnd_thread_start(kiblnd_scheduler, (void *)id, name);
3063 CERROR("Can't spawn thread %d for scheduler[%d]: %d\n",
3064 sched->ibs_cpt, sched->ibs_nthreads + i, rc);
3068 sched->ibs_nthreads += i;
3073 kiblnd_dev_start_threads(kib_dev_t *dev, int newdev, __u32 *cpts, int ncpts)
3079 for (i = 0; i < ncpts; i++) {
3080 struct kib_sched_info *sched;
3082 cpt = (cpts == NULL) ? i : cpts[i];
3083 sched = kiblnd_data.kib_scheds[cpt];
3085 if (!newdev && sched->ibs_nthreads > 0)
3088 rc = kiblnd_start_schedulers(kiblnd_data.kib_scheds[cpt]);
3090 CERROR("Failed to start scheduler threads for %s\n",
3099 kiblnd_dev_search(char *ifname)
3101 kib_dev_t *alias = NULL;
3106 colon = strchr(ifname, ':');
3107 list_for_each_entry(dev, &kiblnd_data.kib_devs, ibd_list) {
3108 if (strcmp(&dev->ibd_ifname[0], ifname) == 0)
3114 colon2 = strchr(dev->ibd_ifname, ':');
3120 if (strcmp(&dev->ibd_ifname[0], ifname) == 0)
3132 kiblnd_startup (lnet_ni_t *ni)
3135 kib_dev_t *ibdev = NULL;
3138 unsigned long flags;
3142 LASSERT (ni->ni_lnd == &the_o2iblnd);
3144 if (kiblnd_data.kib_init == IBLND_INIT_NOTHING) {
3145 rc = kiblnd_base_startup();
3150 LIBCFS_ALLOC(net, sizeof(*net));
3155 memset(net, 0, sizeof(*net));
3157 do_gettimeofday(&tv);
3158 net->ibn_incarnation = (((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
3160 ni->ni_peertimeout = *kiblnd_tunables.kib_peertimeout;
3161 ni->ni_maxtxcredits = *kiblnd_tunables.kib_credits;
3162 ni->ni_peertxcredits = *kiblnd_tunables.kib_peertxcredits;
3163 ni->ni_peerrtrcredits = *kiblnd_tunables.kib_peerrtrcredits;
3165 if (ni->ni_interfaces[0] != NULL) {
3166 /* Use the IPoIB interface specified in 'networks=' */
3168 CLASSERT (LNET_MAX_INTERFACES > 1);
3169 if (ni->ni_interfaces[1] != NULL) {
3170 CERROR("Multiple interfaces not supported\n");
3174 ifname = ni->ni_interfaces[0];
3176 ifname = *kiblnd_tunables.kib_default_ipif;
3179 if (strlen(ifname) >= sizeof(ibdev->ibd_ifname)) {
3180 CERROR("IPoIB interface name too long: %s\n", ifname);
3184 ibdev = kiblnd_dev_search(ifname);
3186 newdev = ibdev == NULL;
3187 /* hmm...create kib_dev even for alias */
3188 if (ibdev == NULL || strcmp(&ibdev->ibd_ifname[0], ifname) != 0)
3189 ibdev = kiblnd_create_dev(ifname);
3194 net->ibn_dev = ibdev;
3195 ni->ni_nid = LNET_MKNID(LNET_NIDNET(ni->ni_nid), ibdev->ibd_ifip);
3197 rc = kiblnd_dev_start_threads(ibdev, newdev,
3198 ni->ni_cpts, ni->ni_ncpts);
3202 rc = kiblnd_net_init_pools(net, ni->ni_cpts, ni->ni_ncpts);
3204 CERROR("Failed to initialize NI pools: %d\n", rc);
3208 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
3210 list_add_tail(&net->ibn_list, &ibdev->ibd_nets);
3211 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
3213 net->ibn_init = IBLND_INIT_ALL;
3218 if (net != NULL && net->ibn_dev == NULL && ibdev != NULL)
3219 kiblnd_destroy_dev(ibdev);
3221 kiblnd_shutdown(ni);
3223 CDEBUG(D_NET, "kiblnd_startup failed\n");
3227 static lnd_t the_o2iblnd = {
3228 .lnd_type = O2IBLND,
3229 .lnd_startup = kiblnd_startup,
3230 .lnd_shutdown = kiblnd_shutdown,
3231 .lnd_ctl = kiblnd_ctl,
3232 .lnd_query = kiblnd_query,
3233 .lnd_send = kiblnd_send,
3234 .lnd_recv = kiblnd_recv,
3238 kiblnd_module_fini (void)
3240 lnet_unregister_lnd(&the_o2iblnd);
3241 kiblnd_tunables_fini();
3245 kiblnd_module_init (void)
3249 CLASSERT (sizeof(kib_msg_t) <= IBLND_MSG_SIZE);
3250 CLASSERT (offsetof(kib_msg_t, ibm_u.get.ibgm_rd.rd_frags[IBLND_MAX_RDMA_FRAGS])
3252 CLASSERT (offsetof(kib_msg_t, ibm_u.putack.ibpam_rd.rd_frags[IBLND_MAX_RDMA_FRAGS])
3255 rc = kiblnd_tunables_init();
3259 lnet_register_lnd(&the_o2iblnd);
3264 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3265 MODULE_DESCRIPTION("Kernel OpenIB gen2 LND v2.00");
3266 MODULE_LICENSE("GPL");
3268 module_init(kiblnd_module_init);
3269 module_exit(kiblnd_module_fini);