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 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lnet/klnds/o2iblnd/o2iblnd.c
38 * Author: Eric Barton <eric@bartonsoftware.com>
45 .lnd_startup = kiblnd_startup,
46 .lnd_shutdown = kiblnd_shutdown,
47 .lnd_ctl = kiblnd_ctl,
48 .lnd_query = kiblnd_query,
49 .lnd_send = kiblnd_send,
50 .lnd_recv = kiblnd_recv,
53 kib_data_t kiblnd_data;
56 kiblnd_cksum (void *ptr, int nob)
62 sum = ((sum << 1) | (sum >> 31)) + *c++;
64 /* ensure I don't return 0 (== no checksum) */
65 return (sum == 0) ? 1 : sum;
69 kiblnd_msgtype2str(int type)
72 case IBLND_MSG_CONNREQ:
75 case IBLND_MSG_CONNACK:
81 case IBLND_MSG_IMMEDIATE:
84 case IBLND_MSG_PUT_REQ:
87 case IBLND_MSG_PUT_NAK:
90 case IBLND_MSG_PUT_ACK:
93 case IBLND_MSG_PUT_DONE:
96 case IBLND_MSG_GET_REQ:
99 case IBLND_MSG_GET_DONE:
108 kiblnd_msgtype2size(int type)
110 const int hdr_size = offsetof(kib_msg_t, ibm_u);
113 case IBLND_MSG_CONNREQ:
114 case IBLND_MSG_CONNACK:
115 return hdr_size + sizeof(kib_connparams_t);
120 case IBLND_MSG_IMMEDIATE:
121 return offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[0]);
123 case IBLND_MSG_PUT_REQ:
124 return hdr_size + sizeof(kib_putreq_msg_t);
126 case IBLND_MSG_PUT_ACK:
127 return hdr_size + sizeof(kib_putack_msg_t);
129 case IBLND_MSG_GET_REQ:
130 return hdr_size + sizeof(kib_get_msg_t);
132 case IBLND_MSG_PUT_NAK:
133 case IBLND_MSG_PUT_DONE:
134 case IBLND_MSG_GET_DONE:
135 return hdr_size + sizeof(kib_completion_msg_t);
142 kiblnd_unpack_rd(kib_msg_t *msg, int flip)
149 LASSERT (msg->ibm_type == IBLND_MSG_GET_REQ ||
150 msg->ibm_type == IBLND_MSG_PUT_ACK);
152 rd = msg->ibm_type == IBLND_MSG_GET_REQ ?
153 &msg->ibm_u.get.ibgm_rd :
154 &msg->ibm_u.putack.ibpam_rd;
157 __swab32s(&rd->rd_key);
158 __swab32s(&rd->rd_nfrags);
163 if (n <= 0 || n > IBLND_MAX_RDMA_FRAGS) {
164 CERROR("Bad nfrags: %d, should be 0 < n <= %d\n",
165 n, IBLND_MAX_RDMA_FRAGS);
169 nob = offsetof (kib_msg_t, ibm_u) +
170 kiblnd_rd_msg_size(rd, msg->ibm_type, n);
172 if (msg->ibm_nob < nob) {
173 CERROR("Short %s: %d(%d)\n",
174 kiblnd_msgtype2str(msg->ibm_type), msg->ibm_nob, nob);
181 for (i = 0; i < n; i++) {
182 __swab32s(&rd->rd_frags[i].rf_nob);
183 __swab64s(&rd->rd_frags[i].rf_addr);
190 kiblnd_pack_msg (lnet_ni_t *ni, kib_msg_t *msg, int version,
191 int credits, lnet_nid_t dstnid, __u64 dststamp)
193 kib_net_t *net = ni->ni_data;
195 /* CAVEAT EMPTOR! all message fields not set here should have been
196 * initialised previously. */
197 msg->ibm_magic = IBLND_MSG_MAGIC;
198 msg->ibm_version = version;
200 msg->ibm_credits = credits;
203 msg->ibm_srcnid = ni->ni_nid;
204 msg->ibm_srcstamp = net->ibn_incarnation;
205 msg->ibm_dstnid = dstnid;
206 msg->ibm_dststamp = dststamp;
208 if (*kiblnd_tunables.kib_cksum) {
209 /* NB ibm_cksum zero while computing cksum */
210 msg->ibm_cksum = kiblnd_cksum(msg, msg->ibm_nob);
215 kiblnd_unpack_msg(kib_msg_t *msg, int nob)
217 const int hdr_size = offsetof(kib_msg_t, ibm_u);
223 /* 6 bytes are enough to have received magic + version */
225 CERROR("Short message: %d\n", nob);
229 if (msg->ibm_magic == IBLND_MSG_MAGIC) {
231 } else if (msg->ibm_magic == __swab32(IBLND_MSG_MAGIC)) {
234 CERROR("Bad magic: %08x\n", msg->ibm_magic);
238 version = flip ? __swab16(msg->ibm_version) : msg->ibm_version;
239 if (version != IBLND_MSG_VERSION &&
240 version != IBLND_MSG_VERSION_1) {
241 CERROR("Bad version: %x\n", version);
245 if (nob < hdr_size) {
246 CERROR("Short message: %d\n", nob);
250 msg_nob = flip ? __swab32(msg->ibm_nob) : msg->ibm_nob;
252 CERROR("Short message: got %d, wanted %d\n", nob, msg_nob);
256 /* checksum must be computed with ibm_cksum zero and BEFORE anything
258 msg_cksum = flip ? __swab32(msg->ibm_cksum) : msg->ibm_cksum;
260 if (msg_cksum != 0 &&
261 msg_cksum != kiblnd_cksum(msg, msg_nob)) {
262 CERROR("Bad checksum\n");
266 msg->ibm_cksum = msg_cksum;
269 /* leave magic unflipped as a clue to peer endianness */
270 msg->ibm_version = version;
271 CLASSERT (sizeof(msg->ibm_type) == 1);
272 CLASSERT (sizeof(msg->ibm_credits) == 1);
273 msg->ibm_nob = msg_nob;
274 __swab64s(&msg->ibm_srcnid);
275 __swab64s(&msg->ibm_srcstamp);
276 __swab64s(&msg->ibm_dstnid);
277 __swab64s(&msg->ibm_dststamp);
280 if (msg->ibm_srcnid == LNET_NID_ANY) {
281 CERROR("Bad src nid: %s\n", libcfs_nid2str(msg->ibm_srcnid));
285 if (msg_nob < kiblnd_msgtype2size(msg->ibm_type)) {
286 CERROR("Short %s: %d(%d)\n", kiblnd_msgtype2str(msg->ibm_type),
287 msg_nob, kiblnd_msgtype2size(msg->ibm_type));
291 switch (msg->ibm_type) {
293 CERROR("Unknown message type %x\n", msg->ibm_type);
297 case IBLND_MSG_IMMEDIATE:
298 case IBLND_MSG_PUT_REQ:
301 case IBLND_MSG_PUT_ACK:
302 case IBLND_MSG_GET_REQ:
303 if (kiblnd_unpack_rd(msg, flip))
307 case IBLND_MSG_PUT_NAK:
308 case IBLND_MSG_PUT_DONE:
309 case IBLND_MSG_GET_DONE:
311 __swab32s(&msg->ibm_u.completion.ibcm_status);
314 case IBLND_MSG_CONNREQ:
315 case IBLND_MSG_CONNACK:
317 __swab16s(&msg->ibm_u.connparams.ibcp_queue_depth);
318 __swab16s(&msg->ibm_u.connparams.ibcp_max_frags);
319 __swab32s(&msg->ibm_u.connparams.ibcp_max_msg_size);
327 kiblnd_create_peer (lnet_ni_t *ni, kib_peer_t **peerp, lnet_nid_t nid)
330 kib_net_t *net = ni->ni_data;
333 LASSERT (net != NULL);
334 LASSERT (nid != LNET_NID_ANY);
336 LIBCFS_ALLOC(peer, sizeof(*peer));
338 CERROR("Cannot allocate peer\n");
342 memset(peer, 0, sizeof(*peer)); /* zero flags etc */
347 peer->ibp_last_alive = 0;
348 atomic_set(&peer->ibp_refcount, 1); /* 1 ref for caller */
350 INIT_LIST_HEAD(&peer->ibp_list); /* not in the peer table yet */
351 INIT_LIST_HEAD(&peer->ibp_conns);
352 INIT_LIST_HEAD(&peer->ibp_tx_queue);
354 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
356 /* always called with a ref on ni, which prevents ni being shutdown */
357 LASSERT (net->ibn_shutdown == 0);
359 /* npeers only grows with the global lock held */
360 atomic_inc(&net->ibn_npeers);
362 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
369 kiblnd_destroy_peer (kib_peer_t *peer)
371 kib_net_t *net = peer->ibp_ni->ni_data;
373 LASSERT (net != NULL);
374 LASSERT (atomic_read(&peer->ibp_refcount) == 0);
375 LASSERT (!kiblnd_peer_active(peer));
376 LASSERT (peer->ibp_connecting == 0);
377 LASSERT (peer->ibp_accepting == 0);
378 LASSERT (list_empty(&peer->ibp_conns));
379 LASSERT (list_empty(&peer->ibp_tx_queue));
381 LIBCFS_FREE(peer, sizeof(*peer));
383 /* NB a peer's connections keep a reference on their peer until
384 * they are destroyed, so we can be assured that _all_ state to do
385 * with this peer has been cleaned up when its refcount drops to
387 atomic_dec(&net->ibn_npeers);
391 kiblnd_find_peer_locked (lnet_nid_t nid)
393 /* the caller is responsible for accounting the additional reference
394 * that this creates */
395 struct list_head *peer_list = kiblnd_nid2peerlist(nid);
396 struct list_head *tmp;
399 list_for_each (tmp, peer_list) {
401 peer = list_entry(tmp, kib_peer_t, ibp_list);
403 LASSERT (peer->ibp_connecting > 0 || /* creating conns */
404 peer->ibp_accepting > 0 ||
405 !list_empty(&peer->ibp_conns)); /* active conn */
407 if (peer->ibp_nid != nid)
410 CDEBUG(D_NET, "got peer [%p] -> %s (%d) version: %x\n",
411 peer, libcfs_nid2str(nid),
412 atomic_read(&peer->ibp_refcount),
420 kiblnd_unlink_peer_locked (kib_peer_t *peer)
422 LASSERT (list_empty(&peer->ibp_conns));
424 LASSERT (kiblnd_peer_active(peer));
425 list_del_init(&peer->ibp_list);
426 /* lose peerlist's ref */
427 kiblnd_peer_decref(peer);
431 kiblnd_get_peer_info (lnet_ni_t *ni, int index,
432 lnet_nid_t *nidp, int *count)
435 struct list_head *ptmp;
439 read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
441 for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) {
443 list_for_each (ptmp, &kiblnd_data.kib_peers[i]) {
445 peer = list_entry(ptmp, kib_peer_t, ibp_list);
446 LASSERT (peer->ibp_connecting > 0 ||
447 peer->ibp_accepting > 0 ||
448 !list_empty(&peer->ibp_conns));
450 if (peer->ibp_ni != ni)
456 *nidp = peer->ibp_nid;
457 *count = atomic_read(&peer->ibp_refcount);
459 read_unlock_irqrestore(&kiblnd_data.kib_global_lock,
465 read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
470 kiblnd_del_peer_locked (kib_peer_t *peer)
472 struct list_head *ctmp;
473 struct list_head *cnxt;
476 if (list_empty(&peer->ibp_conns)) {
477 kiblnd_unlink_peer_locked(peer);
479 list_for_each_safe (ctmp, cnxt, &peer->ibp_conns) {
480 conn = list_entry(ctmp, kib_conn_t, ibc_list);
482 kiblnd_close_conn_locked(conn, 0);
484 /* NB closing peer's last conn unlinked it. */
486 /* NB peer now unlinked; might even be freed if the peer table had the
491 kiblnd_del_peer (lnet_ni_t *ni, lnet_nid_t nid)
493 CFS_LIST_HEAD (zombies);
494 struct list_head *ptmp;
495 struct list_head *pnxt;
503 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
505 if (nid != LNET_NID_ANY) {
506 lo = hi = kiblnd_nid2peerlist(nid) - kiblnd_data.kib_peers;
509 hi = kiblnd_data.kib_peer_hash_size - 1;
512 for (i = lo; i <= hi; i++) {
513 list_for_each_safe (ptmp, pnxt, &kiblnd_data.kib_peers[i]) {
514 peer = list_entry(ptmp, kib_peer_t, ibp_list);
515 LASSERT (peer->ibp_connecting > 0 ||
516 peer->ibp_accepting > 0 ||
517 !list_empty(&peer->ibp_conns));
519 if (peer->ibp_ni != ni)
522 if (!(nid == LNET_NID_ANY || peer->ibp_nid == nid))
525 if (!list_empty(&peer->ibp_tx_queue)) {
526 LASSERT (list_empty(&peer->ibp_conns));
528 list_splice_init(&peer->ibp_tx_queue, &zombies);
531 kiblnd_del_peer_locked(peer);
532 rc = 0; /* matched something */
536 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
538 kiblnd_txlist_done(ni, &zombies, -EIO);
544 kiblnd_get_conn_by_idx (lnet_ni_t *ni, int index)
547 struct list_head *ptmp;
549 struct list_head *ctmp;
553 read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
555 for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) {
556 list_for_each (ptmp, &kiblnd_data.kib_peers[i]) {
558 peer = list_entry(ptmp, kib_peer_t, ibp_list);
559 LASSERT (peer->ibp_connecting > 0 ||
560 peer->ibp_accepting > 0 ||
561 !list_empty(&peer->ibp_conns));
563 if (peer->ibp_ni != ni)
566 list_for_each (ctmp, &peer->ibp_conns) {
570 conn = list_entry(ctmp, kib_conn_t, ibc_list);
571 kiblnd_conn_addref(conn);
572 read_unlock_irqrestore(&kiblnd_data.kib_global_lock,
579 read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
584 kiblnd_debug_rx (kib_rx_t *rx)
586 CDEBUG(D_CONSOLE, " %p status %d msg_type %x cred %d\n",
587 rx, rx->rx_status, rx->rx_msg->ibm_type,
588 rx->rx_msg->ibm_credits);
592 kiblnd_debug_tx (kib_tx_t *tx)
594 CDEBUG(D_CONSOLE, " %p snd %d q %d w %d rc %d dl %lx "
595 "cookie "LPX64" msg %s%s type %x cred %d\n",
596 tx, tx->tx_sending, tx->tx_queued, tx->tx_waiting,
597 tx->tx_status, tx->tx_deadline, tx->tx_cookie,
598 tx->tx_lntmsg[0] == NULL ? "-" : "!",
599 tx->tx_lntmsg[1] == NULL ? "-" : "!",
600 tx->tx_msg->ibm_type, tx->tx_msg->ibm_credits);
604 kiblnd_debug_conn (kib_conn_t *conn)
606 struct list_head *tmp;
609 spin_lock(&conn->ibc_lock);
611 CDEBUG(D_CONSOLE, "conn[%d] %p [version %x] -> %s: \n",
612 atomic_read(&conn->ibc_refcount), conn,
613 conn->ibc_version, libcfs_nid2str(conn->ibc_peer->ibp_nid));
614 CDEBUG(D_CONSOLE, " state %d nposted %d/%d cred %d o_cred %d r_cred %d\n",
615 conn->ibc_state, conn->ibc_noops_posted,
616 conn->ibc_nsends_posted, conn->ibc_credits,
617 conn->ibc_outstanding_credits, conn->ibc_reserved_credits);
618 CDEBUG(D_CONSOLE, " comms_err %d\n", conn->ibc_comms_error);
620 CDEBUG(D_CONSOLE, " early_rxs:\n");
621 list_for_each(tmp, &conn->ibc_early_rxs)
622 kiblnd_debug_rx(list_entry(tmp, kib_rx_t, rx_list));
624 CDEBUG(D_CONSOLE, " tx_queue_nocred:\n");
625 list_for_each(tmp, &conn->ibc_tx_queue_nocred)
626 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
628 CDEBUG(D_CONSOLE, " tx_queue_rsrvd:\n");
629 list_for_each(tmp, &conn->ibc_tx_queue_rsrvd)
630 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
632 CDEBUG(D_CONSOLE, " tx_queue:\n");
633 list_for_each(tmp, &conn->ibc_tx_queue)
634 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
636 CDEBUG(D_CONSOLE, " active_txs:\n");
637 list_for_each(tmp, &conn->ibc_active_txs)
638 kiblnd_debug_tx(list_entry(tmp, kib_tx_t, tx_list));
640 CDEBUG(D_CONSOLE, " rxs:\n");
641 for (i = 0; i < IBLND_RX_MSGS(conn->ibc_version); i++)
642 kiblnd_debug_rx(&conn->ibc_rxs[i]);
644 spin_unlock(&conn->ibc_lock);
648 kiblnd_translate_mtu(int value)
669 kiblnd_setup_mtu(struct rdma_cm_id *cmid)
674 /* XXX There is no path record for iWARP, set by netdev->change_mtu? */
675 if (cmid->route.path_rec == NULL)
678 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
680 mtu = kiblnd_translate_mtu(*kiblnd_tunables.kib_ib_mtu);
683 cmid->route.path_rec->mtu = mtu;
685 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
689 kiblnd_create_conn(kib_peer_t *peer, struct rdma_cm_id *cmid,
690 int state, int version)
693 * If the new conn is created successfully it takes over the caller's
694 * ref on 'peer'. It also "owns" 'cmid' and destroys it when it itself
695 * is destroyed. On failure, the caller's ref on 'peer' remains and
696 * she must dispose of 'cmid'. (Actually I'd block forever if I tried
697 * to destroy 'cmid' here since I'm called from the CM which still has
698 * its ref on 'cmid'). */
699 kib_net_t *net = peer->ibp_ni->ni_data;
700 struct ib_qp_init_attr *init_qp_attr;
707 LASSERT (net != NULL);
708 LASSERT (!in_interrupt());
710 LIBCFS_ALLOC(init_qp_attr, sizeof(*init_qp_attr));
711 if (init_qp_attr == NULL) {
712 CERROR("Can't allocate qp_attr for %s\n",
713 libcfs_nid2str(peer->ibp_nid));
717 LIBCFS_ALLOC(conn, sizeof(*conn));
719 CERROR("Can't allocate connection for %s\n",
720 libcfs_nid2str(peer->ibp_nid));
724 memset(conn, 0, sizeof(*conn)); /* zero flags, NULL pointers etc... */
726 conn->ibc_state = IBLND_CONN_INIT;
727 conn->ibc_version = version;
728 conn->ibc_peer = peer; /* I take the caller's ref */
729 cmid->context = conn; /* for future CM callbacks */
730 conn->ibc_cmid = cmid;
732 INIT_LIST_HEAD(&conn->ibc_early_rxs);
733 INIT_LIST_HEAD(&conn->ibc_tx_queue);
734 INIT_LIST_HEAD(&conn->ibc_tx_queue_rsrvd);
735 INIT_LIST_HEAD(&conn->ibc_tx_queue_nocred);
736 INIT_LIST_HEAD(&conn->ibc_active_txs);
737 spin_lock_init(&conn->ibc_lock);
739 LIBCFS_ALLOC(conn->ibc_connvars, sizeof(*conn->ibc_connvars));
740 if (conn->ibc_connvars == NULL) {
741 CERROR("Can't allocate in-progress connection state\n");
744 memset(conn->ibc_connvars, 0, sizeof(*conn->ibc_connvars));
746 LIBCFS_ALLOC(conn->ibc_rxs, IBLND_RX_MSGS(version) * sizeof(kib_rx_t));
747 if (conn->ibc_rxs == NULL) {
748 CERROR("Cannot allocate RX buffers\n");
751 memset(conn->ibc_rxs, 0, IBLND_RX_MSGS(version) * sizeof(kib_rx_t));
753 rc = kiblnd_alloc_pages(&conn->ibc_rx_pages,
754 IBLND_RX_MSG_PAGES(version));
758 kiblnd_map_rx_descs(conn);
760 #ifdef HAVE_OFED_IB_COMP_VECTOR
761 cq = ib_create_cq(cmid->device,
762 kiblnd_cq_completion, kiblnd_cq_event, conn,
763 IBLND_CQ_ENTRIES(version), 0);
765 cq = ib_create_cq(cmid->device,
766 kiblnd_cq_completion, kiblnd_cq_event, conn,
767 IBLND_CQ_ENTRIES(version));
770 CERROR("Can't create CQ: %ld, cqe: %d\n",
771 PTR_ERR(cq), IBLND_CQ_ENTRIES(version));
777 rc = ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
779 CERROR("Can't request completion notificiation: %d\n", rc);
783 kiblnd_setup_mtu(cmid);
785 memset(init_qp_attr, 0, sizeof(*init_qp_attr));
786 init_qp_attr->event_handler = kiblnd_qp_event;
787 init_qp_attr->qp_context = conn;
788 init_qp_attr->cap.max_send_wr = IBLND_SEND_WRS(version);
789 init_qp_attr->cap.max_recv_wr = IBLND_RECV_WRS(version);
790 init_qp_attr->cap.max_send_sge = 1;
791 init_qp_attr->cap.max_recv_sge = 1;
792 init_qp_attr->sq_sig_type = IB_SIGNAL_REQ_WR;
793 init_qp_attr->qp_type = IB_QPT_RC;
794 init_qp_attr->send_cq = cq;
795 init_qp_attr->recv_cq = cq;
797 rc = rdma_create_qp(cmid, net->ibn_dev->ibd_pd, init_qp_attr);
799 CERROR("Can't create QP: %d, send_wr: %d, recv_wr: %d\n",
800 rc, init_qp_attr->cap.max_send_wr,
801 init_qp_attr->cap.max_recv_wr);
805 LIBCFS_FREE(init_qp_attr, sizeof(*init_qp_attr));
807 /* 1 ref for caller and each rxmsg */
808 atomic_set(&conn->ibc_refcount, 1 + IBLND_RX_MSGS(version));
809 conn->ibc_nrx = IBLND_RX_MSGS(version);
812 for (i = 0; i < IBLND_RX_MSGS(version); i++) {
813 rc = kiblnd_post_rx(&conn->ibc_rxs[i],
814 IBLND_POSTRX_NO_CREDIT);
816 CERROR("Can't post rxmsg: %d\n", rc);
818 /* Make posted receives complete */
819 kiblnd_abort_receives(conn);
821 /* correct # of posted buffers
822 * NB locking needed now I'm racing with completion */
823 spin_lock_irqsave(&kiblnd_data.kib_sched_lock, flags);
824 conn->ibc_nrx -= IBLND_RX_MSGS(version) - i;
825 spin_unlock_irqrestore(&kiblnd_data.kib_sched_lock,
828 /* cmid will be destroyed by CM(ofed) after cm_callback
829 * returned, so we can't refer it anymore
830 * (by kiblnd_connd()->kiblnd_destroy_conn) */
831 rdma_destroy_qp(conn->ibc_cmid);
832 conn->ibc_cmid = NULL;
834 /* Drop my own and unused rxbuffer refcounts */
835 while (i++ <= IBLND_RX_MSGS(version))
836 kiblnd_conn_decref(conn);
842 /* Init successful! */
843 LASSERT (state == IBLND_CONN_ACTIVE_CONNECT ||
844 state == IBLND_CONN_PASSIVE_WAIT);
845 conn->ibc_state = state;
848 atomic_inc(&net->ibn_nconns);
852 kiblnd_destroy_conn(conn);
854 LIBCFS_FREE(init_qp_attr, sizeof(*init_qp_attr));
860 kiblnd_destroy_conn (kib_conn_t *conn)
862 struct rdma_cm_id *cmid = conn->ibc_cmid;
863 kib_peer_t *peer = conn->ibc_peer;
866 LASSERT (!in_interrupt());
867 LASSERT (atomic_read(&conn->ibc_refcount) == 0);
868 LASSERT (list_empty(&conn->ibc_early_rxs));
869 LASSERT (list_empty(&conn->ibc_tx_queue));
870 LASSERT (list_empty(&conn->ibc_tx_queue_rsrvd));
871 LASSERT (list_empty(&conn->ibc_tx_queue_nocred));
872 LASSERT (list_empty(&conn->ibc_active_txs));
873 LASSERT (conn->ibc_noops_posted == 0);
874 LASSERT (conn->ibc_nsends_posted == 0);
876 switch (conn->ibc_state) {
878 /* conn must be completely disengaged from the network */
881 case IBLND_CONN_DISCONNECTED:
882 /* connvars should have been freed already */
883 LASSERT (conn->ibc_connvars == NULL);
886 case IBLND_CONN_INIT:
890 /* conn->ibc_cmid might be destroyed by CM already */
891 if (cmid != NULL && cmid->qp != NULL)
892 rdma_destroy_qp(cmid);
894 if (conn->ibc_cq != NULL) {
895 rc = ib_destroy_cq(conn->ibc_cq);
897 CWARN("Error destroying CQ: %d\n", rc);
900 if (conn->ibc_rx_pages != NULL)
901 kiblnd_unmap_rx_descs(conn);
903 if (conn->ibc_rxs != NULL) {
904 LIBCFS_FREE(conn->ibc_rxs,
905 IBLND_RX_MSGS(conn->ibc_version) * sizeof(kib_rx_t));
908 if (conn->ibc_connvars != NULL)
909 LIBCFS_FREE(conn->ibc_connvars, sizeof(*conn->ibc_connvars));
911 /* See CAVEAT EMPTOR above in kiblnd_create_conn */
912 if (conn->ibc_state != IBLND_CONN_INIT) {
913 kib_net_t *net = peer->ibp_ni->ni_data;
915 kiblnd_peer_decref(peer);
916 rdma_destroy_id(cmid);
917 atomic_dec(&net->ibn_nconns);
920 LIBCFS_FREE(conn, sizeof(*conn));
924 kiblnd_close_peer_conns_locked (kib_peer_t *peer, int why)
927 struct list_head *ctmp;
928 struct list_head *cnxt;
931 list_for_each_safe (ctmp, cnxt, &peer->ibp_conns) {
932 conn = list_entry(ctmp, kib_conn_t, ibc_list);
934 CDEBUG(D_NET, "Closing conn -> %s, "
935 "version: %x, reason: %d\n",
936 libcfs_nid2str(peer->ibp_nid),
937 conn->ibc_version, why);
939 kiblnd_close_conn_locked(conn, why);
947 kiblnd_close_stale_conns_locked (kib_peer_t *peer,
948 int version, __u64 incarnation)
951 struct list_head *ctmp;
952 struct list_head *cnxt;
955 list_for_each_safe (ctmp, cnxt, &peer->ibp_conns) {
956 conn = list_entry(ctmp, kib_conn_t, ibc_list);
958 if (conn->ibc_version == version &&
959 conn->ibc_incarnation == incarnation)
962 CDEBUG(D_NET, "Closing stale conn -> %s version: %x, "
963 "incarnation:"LPX64"(%x, "LPX64")\n",
964 libcfs_nid2str(peer->ibp_nid),
965 conn->ibc_version, conn->ibc_incarnation,
966 version, incarnation);
968 kiblnd_close_conn_locked(conn, -ESTALE);
976 kiblnd_close_matching_conns (lnet_ni_t *ni, lnet_nid_t nid)
979 struct list_head *ptmp;
980 struct list_head *pnxt;
987 write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
989 if (nid != LNET_NID_ANY)
990 lo = hi = kiblnd_nid2peerlist(nid) - kiblnd_data.kib_peers;
993 hi = kiblnd_data.kib_peer_hash_size - 1;
996 for (i = lo; i <= hi; i++) {
997 list_for_each_safe (ptmp, pnxt, &kiblnd_data.kib_peers[i]) {
999 peer = list_entry(ptmp, kib_peer_t, ibp_list);
1000 LASSERT (peer->ibp_connecting > 0 ||
1001 peer->ibp_accepting > 0 ||
1002 !list_empty(&peer->ibp_conns));
1004 if (peer->ibp_ni != ni)
1007 if (!(nid == LNET_NID_ANY || nid == peer->ibp_nid))
1010 count += kiblnd_close_peer_conns_locked(peer, 0);
1014 write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
1016 /* wildcards always succeed */
1017 if (nid == LNET_NID_ANY)
1020 return (count == 0) ? -ENOENT : 0;
1024 kiblnd_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
1026 struct libcfs_ioctl_data *data = arg;
1030 case IOC_LIBCFS_GET_PEER: {
1034 rc = kiblnd_get_peer_info(ni, data->ioc_count,
1036 data->ioc_nid = nid;
1037 data->ioc_count = count;
1041 case IOC_LIBCFS_DEL_PEER: {
1042 rc = kiblnd_del_peer(ni, data->ioc_nid);
1045 case IOC_LIBCFS_GET_CONN: {
1049 conn = kiblnd_get_conn_by_idx(ni, data->ioc_count);
1055 LASSERT (conn->ibc_cmid != NULL);
1056 data->ioc_nid = conn->ibc_peer->ibp_nid;
1057 if (conn->ibc_cmid->route.path_rec == NULL)
1058 data->ioc_u32[0] = 0; /* iWarp has no path MTU */
1061 ib_mtu_enum_to_int(conn->ibc_cmid->route.path_rec->mtu);
1062 kiblnd_conn_decref(conn);
1065 case IOC_LIBCFS_CLOSE_CONNECTION: {
1066 rc = kiblnd_close_matching_conns(ni, data->ioc_nid);
1078 kiblnd_query (lnet_ni_t *ni, lnet_nid_t nid, cfs_time_t *when)
1080 cfs_time_t last_alive = 0;
1081 rwlock_t *glock = &kiblnd_data.kib_global_lock;
1083 unsigned long flags;
1085 read_lock_irqsave(glock, flags);
1087 peer = kiblnd_find_peer_locked(nid);
1089 LASSERT (peer->ibp_connecting > 0 || /* creating conns */
1090 peer->ibp_accepting > 0 ||
1091 !list_empty(&peer->ibp_conns)); /* active conn */
1092 last_alive = peer->ibp_last_alive;
1095 read_unlock_irqrestore(glock, flags);
1097 if (last_alive != 0)
1100 /* peer is not persistent in hash, trigger peer creation
1101 * and connection establishment with a NULL tx */
1103 kiblnd_launch_tx(ni, NULL, nid);
1108 kiblnd_free_pages (kib_pages_t *p)
1110 int npages = p->ibp_npages;
1113 LASSERT (p->ibp_device == NULL);
1115 for (i = 0; i < npages; i++)
1116 if (p->ibp_pages[i] != NULL)
1117 __free_page(p->ibp_pages[i]);
1119 LIBCFS_FREE (p, offsetof(kib_pages_t, ibp_pages[npages]));
1123 kiblnd_alloc_pages (kib_pages_t **pp, int npages)
1128 LIBCFS_ALLOC(p, offsetof(kib_pages_t, ibp_pages[npages]));
1130 CERROR("Can't allocate descriptor for %d pages\n", npages);
1134 memset(p, 0, offsetof(kib_pages_t, ibp_pages[npages]));
1135 p->ibp_npages = npages;
1137 for (i = 0; i < npages; i++) {
1138 p->ibp_pages[i] = alloc_page(GFP_KERNEL);
1139 if (p->ibp_pages[i] == NULL) {
1140 CERROR("Can't allocate page %d of %d\n", i, npages);
1141 kiblnd_free_pages(p);
1151 kiblnd_unmap_rx_descs(kib_conn_t *conn)
1156 LASSERT (conn->ibc_rxs != NULL);
1157 LASSERT (conn->ibc_rx_pages->ibp_device != NULL);
1159 for (i = 0; i < IBLND_RX_MSGS(conn->ibc_version); i++) {
1160 rx = &conn->ibc_rxs[i];
1162 LASSERT (rx->rx_nob >= 0); /* not posted */
1164 kiblnd_dma_unmap_single(conn->ibc_rx_pages->ibp_device,
1165 KIBLND_UNMAP_ADDR(rx, rx_msgunmap,
1167 IBLND_MSG_SIZE, DMA_FROM_DEVICE);
1170 conn->ibc_rx_pages->ibp_device = NULL;
1172 kiblnd_free_pages(conn->ibc_rx_pages);
1174 conn->ibc_rx_pages = NULL;
1178 kiblnd_map_rx_descs(kib_conn_t *conn)
1186 for (pg_off = ipg = i = 0;
1187 i < IBLND_RX_MSGS(conn->ibc_version); i++) {
1188 pg = conn->ibc_rx_pages->ibp_pages[ipg];
1189 rx = &conn->ibc_rxs[i];
1192 rx->rx_msg = (kib_msg_t *)(((char *)page_address(pg)) + pg_off);
1194 rx->rx_msgaddr = kiblnd_dma_map_single(conn->ibc_cmid->device,
1195 rx->rx_msg, IBLND_MSG_SIZE,
1197 LASSERT (!kiblnd_dma_mapping_error(conn->ibc_cmid->device,
1199 KIBLND_UNMAP_ADDR_SET(rx, rx_msgunmap, rx->rx_msgaddr);
1201 CDEBUG(D_NET,"rx %d: %p "LPX64"("LPX64")\n",
1202 i, rx->rx_msg, rx->rx_msgaddr,
1203 lnet_page2phys(pg) + pg_off);
1205 pg_off += IBLND_MSG_SIZE;
1206 LASSERT (pg_off <= PAGE_SIZE);
1208 if (pg_off == PAGE_SIZE) {
1211 LASSERT (ipg <= IBLND_RX_MSG_PAGES(conn->ibc_version));
1215 conn->ibc_rx_pages->ibp_device = conn->ibc_cmid->device;
1219 kiblnd_unmap_tx_pool(kib_tx_pool_t *tpo)
1224 LASSERT (tpo->tpo_pool.po_allocated == 0);
1225 LASSERT (tpo->tpo_tx_pages->ibp_device != NULL);
1227 for (i = 0; i < tpo->tpo_pool.po_size; i++) {
1228 tx = &tpo->tpo_tx_descs[i];
1229 kiblnd_dma_unmap_single(tpo->tpo_tx_pages->ibp_device,
1230 KIBLND_UNMAP_ADDR(tx, tx_msgunmap,
1232 IBLND_MSG_SIZE, DMA_TO_DEVICE);
1234 tpo->tpo_tx_pages->ibp_device = NULL;
1238 kiblnd_map_tx_pool(kib_tx_pool_t *tpo)
1240 kib_pages_t *txpgs = tpo->tpo_tx_pages;
1241 kib_pool_t *pool = &tpo->tpo_pool;
1242 kib_net_t *net = pool->po_owner->ps_net;
1249 LASSERT (net != NULL);
1250 LASSERT (net->ibn_dev->ibd_cmid != NULL &&
1251 net->ibn_dev->ibd_cmid->device != NULL);
1253 /* pre-mapped messages are not bigger than 1 page */
1254 CLASSERT (IBLND_MSG_SIZE <= PAGE_SIZE);
1256 /* No fancy arithmetic when we do the buffer calculations */
1257 CLASSERT (PAGE_SIZE % IBLND_MSG_SIZE == 0);
1259 txpgs->ibp_device = net->ibn_dev->ibd_cmid->device;
1261 for (ipage = page_offset = i = 0; i < pool->po_size; i++) {
1262 page = txpgs->ibp_pages[ipage];
1263 tx = &tpo->tpo_tx_descs[i];
1265 tx->tx_msg = (kib_msg_t *)(((char *)page_address(page)) +
1268 tx->tx_msgaddr = kiblnd_dma_map_single(
1269 txpgs->ibp_device, tx->tx_msg,
1270 IBLND_MSG_SIZE, DMA_TO_DEVICE);
1271 LASSERT (!kiblnd_dma_mapping_error(txpgs->ibp_device,
1273 KIBLND_UNMAP_ADDR_SET(tx, tx_msgunmap, tx->tx_msgaddr);
1275 list_add(&tx->tx_list, &pool->po_free_list);
1277 page_offset += IBLND_MSG_SIZE;
1278 LASSERT (page_offset <= PAGE_SIZE);
1280 if (page_offset == PAGE_SIZE) {
1283 LASSERT (ipage <= txpgs->ibp_npages);
1289 kiblnd_find_dma_mr(kib_net_t *net, __u64 addr, __u64 size)
1293 LASSERT (net->ibn_dev->ibd_mrs[0] != NULL);
1295 if (net->ibn_dev->ibd_nmrs == 1)
1296 return net->ibn_dev->ibd_mrs[0];
1298 index = addr >> net->ibn_dev->ibd_mr_shift;
1300 if (index < net->ibn_dev->ibd_nmrs &&
1301 index == ((addr + size - 1) >> net->ibn_dev->ibd_mr_shift))
1302 return net->ibn_dev->ibd_mrs[index];
1308 kiblnd_find_rd_dma_mr(kib_net_t *net, kib_rdma_desc_t *rd)
1310 struct ib_mr *prev_mr;
1314 LASSERT (net->ibn_dev->ibd_mrs[0] != NULL);
1316 if (*kiblnd_tunables.kib_map_on_demand > 0 &&
1317 *kiblnd_tunables.kib_map_on_demand <= rd->rd_nfrags)
1320 if (net->ibn_dev->ibd_nmrs == 1)
1321 return net->ibn_dev->ibd_mrs[0];
1323 for (i = 0, mr = prev_mr = NULL;
1324 i < rd->rd_nfrags; i++) {
1325 mr = kiblnd_find_dma_mr(net,
1326 rd->rd_frags[i].rf_addr,
1327 rd->rd_frags[i].rf_nob);
1328 if (prev_mr == NULL)
1331 if (mr == NULL || prev_mr != mr) {
1332 /* Can't covered by one single MR */
1342 kiblnd_destroy_fmr_pool(kib_fmr_pool_t *pool)
1344 LASSERT (pool->fpo_map_count == 0);
1346 if (pool->fpo_fmr_pool != NULL)
1347 ib_destroy_fmr_pool(pool->fpo_fmr_pool);
1349 LIBCFS_FREE(pool, sizeof(kib_fmr_pool_t));
1353 kiblnd_destroy_fmr_pool_list(struct list_head *head)
1355 kib_fmr_pool_t *pool;
1357 while (!list_empty(head)) {
1358 pool = list_entry(head->next, kib_fmr_pool_t, fpo_list);
1359 list_del(&pool->fpo_list);
1360 kiblnd_destroy_fmr_pool(pool);
1365 kiblnd_create_fmr_pool(kib_fmr_poolset_t *fps, kib_fmr_pool_t **pp_fpo)
1367 /* FMR pool for RDMA */
1368 kib_fmr_pool_t *fpo;
1369 struct ib_fmr_pool_param param = {
1370 .max_pages_per_fmr = LNET_MAX_PAYLOAD/PAGE_SIZE,
1371 .page_shift = PAGE_SHIFT,
1372 .access = (IB_ACCESS_LOCAL_WRITE |
1373 IB_ACCESS_REMOTE_WRITE),
1374 .pool_size = *kiblnd_tunables.kib_fmr_pool_size,
1375 .dirty_watermark = *kiblnd_tunables.kib_fmr_flush_trigger,
1376 .flush_function = NULL,
1378 .cache = !!*kiblnd_tunables.kib_fmr_cache};
1381 LASSERT (fps->fps_net->ibn_dev != NULL &&
1382 fps->fps_net->ibn_dev->ibd_pd != NULL);
1384 LIBCFS_ALLOC(fpo, sizeof(kib_fmr_pool_t));
1388 memset(fpo, 0, sizeof(kib_fmr_pool_t));
1389 fpo->fpo_fmr_pool = ib_create_fmr_pool(fps->fps_net->ibn_dev->ibd_pd, ¶m);
1390 if (IS_ERR(fpo->fpo_fmr_pool)) {
1391 CERROR("Failed to create FMR pool: %ld\n",
1392 PTR_ERR(fpo->fpo_fmr_pool));
1393 rc = PTR_ERR(fpo->fpo_fmr_pool);
1394 LIBCFS_FREE(fpo, sizeof(kib_fmr_pool_t));
1398 fpo->fpo_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
1399 fpo->fpo_owner = fps;
1406 kiblnd_fini_fmr_pool_set(kib_fmr_poolset_t *fps)
1408 kiblnd_destroy_fmr_pool_list(&fps->fps_pool_list);
1412 kiblnd_init_fmr_pool_set(kib_fmr_poolset_t *fps, kib_net_t *net)
1414 kib_fmr_pool_t *fpo;
1417 memset(fps, 0, sizeof(kib_fmr_poolset_t));
1420 spin_lock_init(&fps->fps_lock);
1421 CFS_INIT_LIST_HEAD(&fps->fps_pool_list);
1422 rc = kiblnd_create_fmr_pool(fps, &fpo);
1424 list_add_tail(&fpo->fpo_list, &fps->fps_pool_list);
1430 kiblnd_fmr_pool_unmap(kib_fmr_t *fmr, int status)
1432 CFS_LIST_HEAD (zombies);
1433 kib_fmr_pool_t *fpo = fmr->fmr_pool;
1434 kib_fmr_poolset_t *fps = fpo->fpo_owner;
1435 kib_fmr_pool_t *tmp;
1438 rc = ib_fmr_pool_unmap(fmr->fmr_pfmr);
1442 rc = ib_flush_fmr_pool(fpo->fpo_fmr_pool);
1446 fmr->fmr_pool = NULL;
1447 fmr->fmr_pfmr = NULL;
1449 spin_lock(&fps->fps_lock);
1450 fpo->fpo_map_count --; /* decref the pool */
1452 list_for_each_entry_safe(fpo, tmp, &fps->fps_pool_list, fpo_list) {
1453 /* the first pool is persistent */
1454 if (fps->fps_pool_list.next == &fpo->fpo_list)
1457 if (fpo->fpo_map_count == 0 && /* no more reference */
1458 cfs_time_aftereq(cfs_time_current(), fpo->fpo_deadline)) {
1459 list_move(&fpo->fpo_list, &zombies);
1460 fps->fps_version ++;
1463 spin_unlock(&fps->fps_lock);
1465 if (!list_empty(&zombies))
1466 kiblnd_destroy_fmr_pool_list(&zombies);
1470 kiblnd_fmr_pool_map(kib_fmr_poolset_t *fps, __u64 *pages, int npages,
1471 __u64 iov, kib_fmr_t *fmr)
1473 struct ib_pool_fmr *pfmr;
1474 kib_fmr_pool_t *fpo;
1478 LASSERT (fps->fps_net->ibn_with_fmr);
1480 spin_lock(&fps->fps_lock);
1481 version = fps->fps_version;
1482 list_for_each_entry(fpo, &fps->fps_pool_list, fpo_list) {
1483 fpo->fpo_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
1484 fpo->fpo_map_count ++;
1485 spin_unlock(&fps->fps_lock);
1487 pfmr = ib_fmr_pool_map_phys(fpo->fpo_fmr_pool,
1488 pages, npages, iov);
1489 if (likely(!IS_ERR(pfmr))) {
1490 fmr->fmr_pool = fpo;
1491 fmr->fmr_pfmr = pfmr;
1495 spin_lock(&fps->fps_lock);
1496 fpo->fpo_map_count --;
1497 if (PTR_ERR(pfmr) != -EAGAIN) {
1498 spin_unlock(&fps->fps_lock);
1499 return PTR_ERR(pfmr);
1502 /* EAGAIN and ... */
1503 if (version != fps->fps_version) {
1504 spin_unlock(&fps->fps_lock);
1509 if (fps->fps_increasing) {
1510 spin_unlock(&fps->fps_lock);
1511 CDEBUG(D_NET, "Another thread is allocating new "
1512 "FMR pool, waiting for her to complete\n");
1518 if (cfs_time_before(cfs_time_current(), fps->fps_next_retry)) {
1519 /* someone failed recently */
1520 spin_unlock(&fps->fps_lock);
1524 fps->fps_increasing = 1;
1525 spin_unlock(&fps->fps_lock);
1527 CDEBUG(D_NET, "Allocate new FMR pool\n");
1528 rc = kiblnd_create_fmr_pool(fps, &fpo);
1529 spin_lock(&fps->fps_lock);
1530 fps->fps_increasing = 0;
1532 fps->fps_version ++;
1533 list_add_tail(&fpo->fpo_list, &fps->fps_pool_list);
1535 fps->fps_next_retry = cfs_time_shift(10);
1537 spin_unlock(&fps->fps_lock);
1543 kiblnd_fini_pool(kib_pool_t *pool)
1545 LASSERT (list_empty(&pool->po_free_list));
1546 LASSERT (pool->po_allocated == 0);
1548 CDEBUG(D_NET, "Finalize %s pool\n", pool->po_owner->ps_name);
1552 kiblnd_init_pool(kib_poolset_t *ps, kib_pool_t *pool, int size)
1554 CDEBUG(D_NET, "Initialize %s pool\n", ps->ps_name);
1556 memset(pool, 0, sizeof(kib_pool_t));
1557 CFS_INIT_LIST_HEAD(&pool->po_free_list);
1558 pool->po_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
1559 pool->po_owner = ps;
1560 pool->po_size = size;
1564 kiblnd_destroy_pool_list(kib_poolset_t *ps, struct list_head *head)
1568 while (!list_empty(head)) {
1569 pool = list_entry(head->next, kib_pool_t, po_list);
1570 list_del(&pool->po_list);
1571 ps->ps_pool_destroy(pool);
1576 kiblnd_fini_pool_set(kib_poolset_t *ps)
1578 kiblnd_destroy_pool_list(ps, &ps->ps_pool_list);
1582 kiblnd_init_pool_set(kib_poolset_t *ps, kib_net_t *net,
1583 char *name, int size,
1584 kib_ps_pool_create_t po_create,
1585 kib_ps_pool_destroy_t po_destroy,
1586 kib_ps_node_init_t nd_init,
1587 kib_ps_node_fini_t nd_fini)
1592 memset(ps, 0, sizeof(kib_poolset_t));
1595 ps->ps_pool_create = po_create;
1596 ps->ps_pool_destroy = po_destroy;
1597 ps->ps_node_init = nd_init;
1598 ps->ps_node_fini = nd_fini;
1599 ps->ps_pool_size = size;
1600 strncpy(ps->ps_name, name, IBLND_POOL_NAME_LEN);
1601 spin_lock_init(&ps->ps_lock);
1602 CFS_INIT_LIST_HEAD(&ps->ps_pool_list);
1604 rc = ps->ps_pool_create(ps, size, &pool);
1606 list_add(&pool->po_list, &ps->ps_pool_list);
1608 CERROR("Failed to create the first pool for %s\n", ps->ps_name);
1614 kiblnd_pool_free_node(kib_pool_t *pool, struct list_head *node)
1616 CFS_LIST_HEAD (zombies);
1617 kib_poolset_t *ps = pool->po_owner;
1619 cfs_time_t now = cfs_time_current();
1621 spin_lock(&ps->ps_lock);
1623 if (ps->ps_node_fini != NULL)
1624 ps->ps_node_fini(pool, node);
1626 LASSERT (pool->po_allocated > 0);
1627 list_add(node, &pool->po_free_list);
1628 pool->po_allocated --;
1630 list_for_each_entry_safe(pool, tmp, &ps->ps_pool_list, po_list) {
1631 /* the first pool is persistent */
1632 if (ps->ps_pool_list.next == &pool->po_list)
1635 if (pool->po_allocated == 0 &&
1636 cfs_time_aftereq(now, pool->po_deadline))
1637 list_move(&pool->po_list, &zombies);
1639 spin_unlock(&ps->ps_lock);
1641 if (!list_empty(&zombies))
1642 kiblnd_destroy_pool_list(ps, &zombies);
1646 kiblnd_pool_alloc_node(kib_poolset_t *ps)
1648 struct list_head *node;
1653 spin_lock(&ps->ps_lock);
1654 list_for_each_entry(pool, &ps->ps_pool_list, po_list) {
1655 if (list_empty(&pool->po_free_list))
1658 pool->po_allocated ++;
1659 pool->po_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
1660 node = pool->po_free_list.next;
1663 if (ps->ps_node_init != NULL) {
1664 /* still hold the lock */
1665 ps->ps_node_init(pool, node);
1667 spin_unlock(&ps->ps_lock);
1671 /* no available tx pool and ... */
1672 if (ps->ps_increasing) {
1673 /* another thread is allocating a new pool */
1674 spin_unlock(&ps->ps_lock);
1675 CDEBUG(D_NET, "Another thread is allocating new "
1676 "%s pool, waiting for her to complete\n",
1682 if (cfs_time_before(cfs_time_current(), ps->ps_next_retry)) {
1683 /* someone failed recently */
1684 spin_unlock(&ps->ps_lock);
1688 ps->ps_increasing = 1;
1689 spin_unlock(&ps->ps_lock);
1691 CDEBUG(D_NET, "%s pool exhausted, allocate new pool\n", ps->ps_name);
1693 rc = ps->ps_pool_create(ps, ps->ps_pool_size, &pool);
1695 spin_lock(&ps->ps_lock);
1696 ps->ps_increasing = 0;
1698 list_add_tail(&pool->po_list, &ps->ps_pool_list);
1700 /* retry 10 seconds later */
1701 ps->ps_next_retry = cfs_time_shift(10);
1702 CERROR("Can't allocate new %s pool because out of memory\n",
1705 spin_unlock(&ps->ps_lock);
1711 kiblnd_pmr_pool_unmap(kib_phys_mr_t *pmr)
1713 kib_pmr_pool_t *ppo = pmr->pmr_pool;
1714 struct ib_mr *mr = pmr->pmr_mr;
1717 kiblnd_pool_free_node(&ppo->ppo_pool, &pmr->pmr_list);
1723 kiblnd_pmr_pool_map(kib_pmr_poolset_t *pps, kib_rdma_desc_t *rd,
1724 __u64 *iova, kib_phys_mr_t **pp_pmr)
1727 struct list_head *node;
1731 node = kiblnd_pool_alloc_node(&pps->pps_poolset);
1733 CERROR("Failed to allocate PMR descriptor\n");
1737 pmr = container_of(node, kib_phys_mr_t, pmr_list);
1738 for (i = 0; i < rd->rd_nfrags; i ++) {
1739 pmr->pmr_ipb[i].addr = rd->rd_frags[i].rf_addr;
1740 pmr->pmr_ipb[i].size = rd->rd_frags[i].rf_nob;
1743 pmr->pmr_mr = ib_reg_phys_mr(pps->pps_poolset.ps_net->ibn_dev->ibd_pd,
1744 pmr->pmr_ipb, rd->rd_nfrags,
1745 IB_ACCESS_LOCAL_WRITE |
1746 IB_ACCESS_REMOTE_WRITE,
1748 if (!IS_ERR(pmr->pmr_mr)) {
1749 pmr->pmr_iova = *iova;
1754 rc = PTR_ERR(pmr->pmr_mr);
1755 CERROR("Failed ib_reg_phys_mr: %d\n", rc);
1758 kiblnd_pool_free_node(&pmr->pmr_pool->ppo_pool, node);
1764 kiblnd_destroy_pmr_pool(kib_pool_t *pool)
1766 kib_pmr_pool_t *ppo = container_of(pool, kib_pmr_pool_t, ppo_pool);
1769 LASSERT (pool->po_allocated == 0);
1771 while (!list_empty(&pool->po_free_list)) {
1772 pmr = list_entry(pool->po_free_list.next,
1773 kib_phys_mr_t, pmr_list);
1775 LASSERT (pmr->pmr_mr == NULL);
1776 list_del(&pmr->pmr_list);
1778 if (pmr->pmr_ipb != NULL) {
1779 LIBCFS_FREE(pmr->pmr_ipb,
1780 IBLND_MAX_RDMA_FRAGS *
1781 sizeof(struct ib_phys_buf));
1784 LIBCFS_FREE(pmr, sizeof(kib_phys_mr_t));
1787 kiblnd_fini_pool(pool);
1788 LIBCFS_FREE(ppo, sizeof(kib_pmr_pool_t));
1792 kiblnd_create_pmr_pool(kib_poolset_t *ps, int size, kib_pool_t **pp_po)
1794 kib_pmr_pool_t *ppo;
1799 LIBCFS_ALLOC(ppo, sizeof(kib_pmr_pool_t));
1801 CERROR("Failed to allocate PMR pool\n");
1805 pool = &ppo->ppo_pool;
1806 kiblnd_init_pool(ps, pool, size);
1808 for (i = 0; i < size; i++) {
1809 LIBCFS_ALLOC(pmr, sizeof(kib_phys_mr_t));
1813 memset(pmr, 0, sizeof(kib_phys_mr_t));
1814 pmr->pmr_pool = ppo;
1815 LIBCFS_ALLOC(pmr->pmr_ipb,
1816 IBLND_MAX_RDMA_FRAGS *
1817 sizeof(struct ib_phys_buf));
1818 if (pmr->pmr_ipb == NULL)
1821 list_add(&pmr->pmr_list, &pool->po_free_list);
1825 ps->ps_pool_destroy(pool);
1834 kiblnd_destroy_tx_pool(kib_pool_t *pool)
1836 kib_tx_pool_t *tpo = container_of(pool, kib_tx_pool_t, tpo_pool);
1839 LASSERT (pool->po_allocated == 0);
1841 if (tpo->tpo_tx_pages != NULL) {
1842 if (tpo->tpo_tx_pages->ibp_device != NULL)
1843 kiblnd_unmap_tx_pool(tpo);
1844 kiblnd_free_pages(tpo->tpo_tx_pages);
1847 if (tpo->tpo_tx_descs == NULL)
1850 for (i = 0; i < pool->po_size; i++) {
1851 kib_tx_t *tx = &tpo->tpo_tx_descs[i];
1853 list_del(&tx->tx_list);
1854 if (tx->tx_pages != NULL)
1855 LIBCFS_FREE(tx->tx_pages,
1857 sizeof(*tx->tx_pages));
1858 if (tx->tx_frags != NULL)
1859 LIBCFS_FREE(tx->tx_frags,
1860 IBLND_MAX_RDMA_FRAGS *
1861 sizeof(*tx->tx_frags));
1862 if (tx->tx_wrq != NULL)
1863 LIBCFS_FREE(tx->tx_wrq,
1864 (1 + IBLND_MAX_RDMA_FRAGS) *
1865 sizeof(*tx->tx_wrq));
1866 if (tx->tx_sge != NULL)
1867 LIBCFS_FREE(tx->tx_sge,
1868 (1 + IBLND_MAX_RDMA_FRAGS) *
1869 sizeof(*tx->tx_sge));
1870 if (tx->tx_rd != NULL)
1871 LIBCFS_FREE(tx->tx_rd,
1872 offsetof(kib_rdma_desc_t,
1873 rd_frags[IBLND_MAX_RDMA_FRAGS]));
1876 LIBCFS_FREE(tpo->tpo_tx_descs,
1877 pool->po_size * sizeof(kib_tx_t));
1879 kiblnd_fini_pool(pool);
1880 LIBCFS_FREE(tpo, sizeof(kib_tx_pool_t));
1884 kiblnd_create_tx_pool(kib_poolset_t *ps, int size, kib_pool_t **pp_po)
1891 LIBCFS_ALLOC(tpo, sizeof(kib_tx_pool_t));
1893 CERROR("Failed to allocate TX pool\n");
1897 pool = &tpo->tpo_pool;
1898 kiblnd_init_pool(ps, pool, size);
1899 tpo->tpo_tx_descs = NULL;
1900 tpo->tpo_tx_pages = NULL;
1902 npg = (size * IBLND_MSG_SIZE + PAGE_SIZE - 1) / PAGE_SIZE;
1903 if (kiblnd_alloc_pages(&tpo->tpo_tx_pages, npg) != 0) {
1904 CERROR("Can't allocate tx pages: %d\n", npg);
1905 LIBCFS_FREE(tpo, sizeof(kib_tx_pool_t));
1909 LIBCFS_ALLOC (tpo->tpo_tx_descs, size * sizeof(kib_tx_t));
1910 if (tpo->tpo_tx_descs == NULL) {
1911 CERROR("Can't allocate %d tx descriptors\n", size);
1912 ps->ps_pool_destroy(pool);
1916 memset(tpo->tpo_tx_descs, 0, size * sizeof(kib_tx_t));
1918 for (i = 0; i < size; i++) {
1919 kib_tx_t *tx = &tpo->tpo_tx_descs[i];
1922 if (ps->ps_net->ibn_with_fmr){
1923 LIBCFS_ALLOC(tx->tx_pages, LNET_MAX_IOV *
1924 sizeof(*tx->tx_pages));
1925 if (tx->tx_pages == NULL)
1929 LIBCFS_ALLOC(tx->tx_frags,
1930 IBLND_MAX_RDMA_FRAGS *
1931 sizeof(*tx->tx_frags));
1932 if (tx->tx_frags == NULL)
1935 LIBCFS_ALLOC(tx->tx_wrq,
1936 (1 + IBLND_MAX_RDMA_FRAGS) *
1937 sizeof(*tx->tx_wrq));
1938 if (tx->tx_wrq == NULL)
1941 LIBCFS_ALLOC(tx->tx_sge,
1942 (1 + IBLND_MAX_RDMA_FRAGS) *
1943 sizeof(*tx->tx_sge));
1944 if (tx->tx_sge == NULL)
1947 LIBCFS_ALLOC(tx->tx_rd,
1948 offsetof(kib_rdma_desc_t,
1949 rd_frags[IBLND_MAX_RDMA_FRAGS]));
1950 if (tx->tx_rd == NULL)
1955 kiblnd_map_tx_pool(tpo);
1960 ps->ps_pool_destroy(pool);
1965 kiblnd_tx_init(kib_pool_t *pool, struct list_head *node)
1967 kib_tx_poolset_t *tps = container_of(pool->po_owner, kib_tx_poolset_t, tps_poolset);
1968 kib_tx_t *tx = list_entry(node, kib_tx_t, tx_list);
1970 tx->tx_cookie = tps->tps_next_tx_cookie ++;
1974 kiblnd_ni_fini_pools(kib_net_t *net)
1976 kiblnd_fini_pool_set(&net->ibn_tx_ps.tps_poolset);
1977 if (net->ibn_with_fmr)
1978 kiblnd_fini_fmr_pool_set(&net->ibn_fmr_ps);
1979 else if (net->ibn_with_pmr)
1980 kiblnd_fini_pool_set(&net->ibn_pmr_ps.pps_poolset);
1984 kiblnd_net_init_pools(kib_net_t *net)
1986 kib_fmr_poolset_t *fps = &net->ibn_fmr_ps;
1987 kib_pmr_poolset_t *pps = &net->ibn_pmr_ps;
1988 kib_tx_poolset_t *tps = &net->ibn_tx_ps;
1991 if (*kiblnd_tunables.kib_fmr_pool_size <
1992 *kiblnd_tunables.kib_ntx / 4) {
1993 CERROR("Can't set fmr pool size (%d) < ntx / 4(%d)\n",
1994 *kiblnd_tunables.kib_fmr_pool_size,
1995 *kiblnd_tunables.kib_ntx / 4);
1999 if (*kiblnd_tunables.kib_pmr_pool_size <
2000 *kiblnd_tunables.kib_ntx / 4) {
2001 CERROR("Can't set pmr pool size (%d) < ntx / 4(%d)\n",
2002 *kiblnd_tunables.kib_pmr_pool_size,
2003 *kiblnd_tunables.kib_ntx / 4);
2007 if (*kiblnd_tunables.kib_map_on_demand > 0 ||
2008 net->ibn_dev->ibd_nmrs > 1) { /* premapping can fail if ibd_nmr > 1,
2009 * so we always create FMR/PMR pool and
2010 * map-on-demand if premapping failed */
2011 rc = kiblnd_init_fmr_pool_set(fps, net);
2013 net->ibn_with_fmr = 1;
2014 } else if (rc == -ENOSYS) {
2015 rc = kiblnd_init_pool_set(&pps->pps_poolset, net, "PMR",
2016 *kiblnd_tunables.kib_pmr_pool_size,
2017 kiblnd_create_pmr_pool,
2018 kiblnd_destroy_pmr_pool,
2021 net->ibn_with_pmr = 1;
2027 rc = kiblnd_init_pool_set(&tps->tps_poolset, net, "TX", IBLND_TX_MSGS(),
2028 kiblnd_create_tx_pool, kiblnd_destroy_tx_pool,
2029 kiblnd_tx_init, NULL);
2033 if (net->ibn_with_fmr)
2034 kiblnd_fini_fmr_pool_set(fps);
2035 else if (net->ibn_with_pmr)
2036 kiblnd_fini_pool_set(&pps->pps_poolset);
2042 kiblnd_dev_cleanup(kib_dev_t *ibdev)
2046 if (ibdev->ibd_mrs == NULL)
2049 for (i = 0; i < ibdev->ibd_nmrs; i++) {
2050 if (ibdev->ibd_mrs[i] == NULL)
2053 ib_dereg_mr(ibdev->ibd_mrs[i]);
2056 LIBCFS_FREE(ibdev->ibd_mrs, sizeof(*ibdev->ibd_mrs) * ibdev->ibd_nmrs);
2057 ibdev->ibd_mrs = NULL;
2061 kiblnd_dev_get_attr(kib_dev_t *ibdev)
2063 struct ib_device_attr *attr;
2066 /* It's safe to assume a HCA can handle a page size
2067 * matching that of the native system */
2068 ibdev->ibd_page_shift = PAGE_SHIFT;
2069 ibdev->ibd_page_size = 1 << PAGE_SHIFT;
2070 ibdev->ibd_page_mask = ~((__u64)ibdev->ibd_page_size - 1);
2072 LIBCFS_ALLOC(attr, sizeof(*attr));
2074 CERROR("Out of memory\n");
2078 rc = ib_query_device(ibdev->ibd_cmid->device, attr);
2080 ibdev->ibd_mr_size = attr->max_mr_size;
2082 LIBCFS_FREE(attr, sizeof(*attr));
2085 CERROR("Failed to query IB device: %d\n", rc);
2089 #ifdef HAVE_OFED_TRANSPORT_IWARP
2090 /* XXX We can't trust this value returned by Chelsio driver, it's wrong
2091 * and we have reported the bug, remove these in the future when Chelsio
2093 if (rdma_node_get_transport(ibdev->ibd_cmid->device->node_type) ==
2094 RDMA_TRANSPORT_IWARP)
2095 ibdev->ibd_mr_size = (1ULL << 32) - 1;
2098 if (ibdev->ibd_mr_size == ~0ULL) {
2099 ibdev->ibd_mr_shift = 64;
2103 for (ibdev->ibd_mr_shift = 0;
2104 ibdev->ibd_mr_shift < 64; ibdev->ibd_mr_shift ++) {
2105 if (ibdev->ibd_mr_size == (1ULL << ibdev->ibd_mr_shift) ||
2106 ibdev->ibd_mr_size == (1ULL << ibdev->ibd_mr_shift) - 1)
2110 CERROR("Invalid mr size: "LPX64"\n", ibdev->ibd_mr_size);
2115 kiblnd_dev_setup(kib_dev_t *ibdev)
2122 int acflags = IB_ACCESS_LOCAL_WRITE |
2123 IB_ACCESS_REMOTE_WRITE;
2125 rc = kiblnd_dev_get_attr(ibdev);
2129 if (ibdev->ibd_mr_shift == 64) {
2130 LIBCFS_ALLOC(ibdev->ibd_mrs, 1 * sizeof(*ibdev->ibd_mrs));
2131 if (ibdev->ibd_mrs == NULL) {
2132 CERROR("Failed to allocate MRs table\n");
2136 ibdev->ibd_mrs[0] = NULL;
2137 ibdev->ibd_nmrs = 1;
2139 mr = ib_get_dma_mr(ibdev->ibd_pd, acflags);
2141 CERROR("Failed ib_get_dma_mr : %ld\n", PTR_ERR(mr));
2142 kiblnd_dev_cleanup(ibdev);
2146 ibdev->ibd_mrs[0] = mr;
2151 mr_size = (1ULL << ibdev->ibd_mr_shift);
2152 mm_size = (unsigned long)high_memory - PAGE_OFFSET;
2154 ibdev->ibd_nmrs = (int)((mm_size + mr_size - 1) >> ibdev->ibd_mr_shift);
2156 if (ibdev->ibd_mr_shift < 32 || ibdev->ibd_nmrs > 1024) {
2157 /* it's 4T..., assume we will re-code at that time */
2158 CERROR("Can't support memory size: x"LPX64
2159 " with MR size: x"LPX64"\n", mm_size, mr_size);
2163 /* create an array of MRs to cover all memory */
2164 LIBCFS_ALLOC(ibdev->ibd_mrs, sizeof(*ibdev->ibd_mrs) * ibdev->ibd_nmrs);
2165 if (ibdev->ibd_mrs == NULL) {
2166 CERROR("Failed to allocate MRs' table\n");
2170 memset(ibdev->ibd_mrs, 0, sizeof(*ibdev->ibd_mrs) * ibdev->ibd_nmrs);
2172 for (i = 0; i < ibdev->ibd_nmrs; i++) {
2173 struct ib_phys_buf ipb;
2176 ipb.size = ibdev->ibd_mr_size;
2177 ipb.addr = i * mr_size;
2180 mr = ib_reg_phys_mr(ibdev->ibd_pd, &ipb, 1, acflags, &iova);
2182 CERROR("Failed ib_reg_phys_mr addr "LPX64
2183 " size "LPX64" : %ld\n",
2184 ipb.addr, ipb.size, PTR_ERR(mr));
2185 kiblnd_dev_cleanup(ibdev);
2189 LASSERT (iova == ipb.addr);
2191 ibdev->ibd_mrs[i] = mr;
2195 CDEBUG(D_CONSOLE, "Register global MR array, MR size: "
2196 LPX64", array size: %d\n",
2197 ibdev->ibd_mr_size, ibdev->ibd_nmrs);
2199 list_add_tail(&ibdev->ibd_list,
2200 &kiblnd_data.kib_devs);
2205 kiblnd_destroy_dev (kib_dev_t *dev)
2207 LASSERT (dev->ibd_nnets == 0);
2209 if (!list_empty(&dev->ibd_list)) /* on kib_devs? */
2210 list_del_init(&dev->ibd_list);
2212 kiblnd_dev_cleanup(dev);
2214 if (dev->ibd_pd != NULL)
2215 ib_dealloc_pd(dev->ibd_pd);
2217 if (dev->ibd_cmid != NULL)
2218 rdma_destroy_id(dev->ibd_cmid);
2220 LIBCFS_FREE(dev, sizeof(*dev));
2224 kiblnd_base_shutdown (void)
2228 LASSERT (list_empty(&kiblnd_data.kib_devs));
2230 CDEBUG(D_MALLOC, "before LND base cleanup: kmem %d\n",
2231 atomic_read(&libcfs_kmemory));
2233 switch (kiblnd_data.kib_init) {
2237 case IBLND_INIT_ALL:
2238 case IBLND_INIT_DATA:
2239 LASSERT (kiblnd_data.kib_peers != NULL);
2240 for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) {
2241 LASSERT (list_empty(&kiblnd_data.kib_peers[i]));
2243 LASSERT (list_empty(&kiblnd_data.kib_connd_zombies));
2244 LASSERT (list_empty(&kiblnd_data.kib_connd_conns));
2246 /* flag threads to terminate; wake and wait for them to die */
2247 kiblnd_data.kib_shutdown = 1;
2248 wake_up_all(&kiblnd_data.kib_sched_waitq);
2249 wake_up_all(&kiblnd_data.kib_connd_waitq);
2252 while (atomic_read(&kiblnd_data.kib_nthreads) != 0) {
2254 CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */
2255 "Waiting for %d threads to terminate\n",
2256 atomic_read(&kiblnd_data.kib_nthreads));
2257 cfs_pause(cfs_time_seconds(1));
2262 case IBLND_INIT_NOTHING:
2266 if (kiblnd_data.kib_peers != NULL)
2267 LIBCFS_FREE(kiblnd_data.kib_peers,
2268 sizeof(struct list_head) *
2269 kiblnd_data.kib_peer_hash_size);
2271 CDEBUG(D_MALLOC, "after LND base cleanup: kmem %d\n",
2272 atomic_read(&libcfs_kmemory));
2274 kiblnd_data.kib_init = IBLND_INIT_NOTHING;
2275 PORTAL_MODULE_UNUSE;
2279 kiblnd_shutdown (lnet_ni_t *ni)
2281 kib_net_t *net = ni->ni_data;
2282 rwlock_t *g_lock = &kiblnd_data.kib_global_lock;
2284 unsigned long flags;
2286 LASSERT(kiblnd_data.kib_init == IBLND_INIT_ALL);
2291 CDEBUG(D_MALLOC, "before LND net cleanup: kmem %d\n",
2292 atomic_read(&libcfs_kmemory));
2294 write_lock_irqsave(g_lock, flags);
2295 net->ibn_shutdown = 1;
2296 write_unlock_irqrestore(g_lock, flags);
2298 switch (net->ibn_init) {
2302 case IBLND_INIT_ALL:
2303 /* nuke all existing peers within this net */
2304 kiblnd_del_peer(ni, LNET_NID_ANY);
2306 /* Wait for all peer state to clean up */
2308 while (atomic_read(&net->ibn_npeers) != 0) {
2310 CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* 2**n? */
2311 "%s: waiting for %d peers to disconnect\n",
2312 libcfs_nid2str(ni->ni_nid),
2313 atomic_read(&net->ibn_npeers));
2314 cfs_pause(cfs_time_seconds(1));
2317 kiblnd_ni_fini_pools(net);
2319 LASSERT (net->ibn_dev->ibd_nnets > 0);
2320 net->ibn_dev->ibd_nnets--;
2324 case IBLND_INIT_NOTHING:
2325 LASSERT (atomic_read(&net->ibn_nconns) == 0);
2327 if (net->ibn_dev != NULL &&
2328 net->ibn_dev->ibd_nnets == 0)
2329 kiblnd_destroy_dev(net->ibn_dev);
2334 CDEBUG(D_MALLOC, "after LND net cleanup: kmem %d\n",
2335 atomic_read(&libcfs_kmemory));
2337 net->ibn_init = IBLND_INIT_NOTHING;
2340 LIBCFS_FREE(net, sizeof(*net));
2343 if (list_empty(&kiblnd_data.kib_devs))
2344 kiblnd_base_shutdown();
2349 kiblnd_base_startup (void)
2354 LASSERT (kiblnd_data.kib_init == IBLND_INIT_NOTHING);
2357 memset(&kiblnd_data, 0, sizeof(kiblnd_data)); /* zero pointers, flags etc */
2359 rwlock_init(&kiblnd_data.kib_global_lock);
2361 INIT_LIST_HEAD(&kiblnd_data.kib_devs);
2363 kiblnd_data.kib_peer_hash_size = IBLND_PEER_HASH_SIZE;
2364 LIBCFS_ALLOC(kiblnd_data.kib_peers,
2365 sizeof(struct list_head) * kiblnd_data.kib_peer_hash_size);
2366 if (kiblnd_data.kib_peers == NULL) {
2369 for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++)
2370 INIT_LIST_HEAD(&kiblnd_data.kib_peers[i]);
2372 spin_lock_init(&kiblnd_data.kib_connd_lock);
2373 INIT_LIST_HEAD(&kiblnd_data.kib_connd_conns);
2374 INIT_LIST_HEAD(&kiblnd_data.kib_connd_zombies);
2375 init_waitqueue_head(&kiblnd_data.kib_connd_waitq);
2377 spin_lock_init(&kiblnd_data.kib_sched_lock);
2378 INIT_LIST_HEAD(&kiblnd_data.kib_sched_conns);
2379 init_waitqueue_head(&kiblnd_data.kib_sched_waitq);
2381 kiblnd_data.kib_error_qpa.qp_state = IB_QPS_ERR;
2383 /* lists/ptrs/locks initialised */
2384 kiblnd_data.kib_init = IBLND_INIT_DATA;
2385 /*****************************************************/
2387 for (i = 0; i < IBLND_N_SCHED; i++) {
2388 rc = kiblnd_thread_start(kiblnd_scheduler, (void *)((long)i));
2390 CERROR("Can't spawn o2iblnd scheduler[%d]: %d\n",
2396 rc = kiblnd_thread_start(kiblnd_connd, NULL);
2398 CERROR("Can't spawn o2iblnd connd: %d\n", rc);
2402 /* flag everything initialised */
2403 kiblnd_data.kib_init = IBLND_INIT_ALL;
2404 /*****************************************************/
2409 kiblnd_base_shutdown();
2414 kiblnd_startup (lnet_ni_t *ni)
2417 kib_dev_t *ibdev = NULL;
2419 struct list_head *tmp;
2423 LASSERT (ni->ni_lnd == &the_o2iblnd);
2425 if (kiblnd_data.kib_init == IBLND_INIT_NOTHING) {
2426 rc = kiblnd_base_startup();
2431 LIBCFS_ALLOC(net, sizeof(*net));
2436 memset(net, 0, sizeof(*net));
2438 do_gettimeofday(&tv);
2439 net->ibn_incarnation = (((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
2441 ni->ni_peertimeout = *kiblnd_tunables.kib_peertimeout;
2442 ni->ni_maxtxcredits = *kiblnd_tunables.kib_credits;
2443 ni->ni_peertxcredits = *kiblnd_tunables.kib_peertxcredits;
2444 ni->ni_peerrtrcredits = *kiblnd_tunables.kib_peerrtrcredits;
2446 if (ni->ni_interfaces[0] != NULL) {
2447 /* Use the IPoIB interface specified in 'networks=' */
2449 CLASSERT (LNET_MAX_INTERFACES > 1);
2450 if (ni->ni_interfaces[1] != NULL) {
2451 CERROR("Multiple interfaces not supported\n");
2455 ifname = ni->ni_interfaces[0];
2457 ifname = *kiblnd_tunables.kib_default_ipif;
2460 if (strlen(ifname) >= sizeof(ibdev->ibd_ifname)) {
2461 CERROR("IPoIB interface name too long: %s\n", ifname);
2465 list_for_each (tmp, &kiblnd_data.kib_devs) {
2466 ibdev = list_entry(tmp, kib_dev_t, ibd_list);
2468 if (!strcmp(&ibdev->ibd_ifname[0], ifname))
2474 if (ibdev == NULL) {
2478 struct rdma_cm_id *id;
2480 struct sockaddr_in addr;
2482 rc = libcfs_ipif_query(ifname, &up, &ip, &netmask);
2484 CERROR("Can't query IPoIB interface %s: %d\n",
2490 CERROR("Can't query IPoIB interface %s: it's down\n",
2495 LIBCFS_ALLOC(ibdev, sizeof(*ibdev));
2499 memset(ibdev, 0, sizeof(*ibdev));
2501 CFS_INIT_LIST_HEAD(&ibdev->ibd_list); /* not yet in kib_devs */
2502 ibdev->ibd_ifip = ip;
2503 strcpy(&ibdev->ibd_ifname[0], ifname);
2505 id = rdma_create_id(kiblnd_cm_callback, ibdev, RDMA_PS_TCP);
2507 CERROR("Can't create listen ID: %ld\n", PTR_ERR(id));
2511 ibdev->ibd_cmid = id;
2513 memset(&addr, 0, sizeof(addr));
2514 addr.sin_family = AF_INET;
2515 addr.sin_port = htons(*kiblnd_tunables.kib_service);
2516 addr.sin_addr.s_addr = htonl(ip);
2518 rc = rdma_bind_addr(id, (struct sockaddr *)&addr);
2520 CERROR("Can't bind to %s: %d\n", ifname, rc);
2524 /* Binding should have assigned me an IB device */
2525 LASSERT (id->device != NULL);
2526 CDEBUG(D_CONSOLE, "Listener bound to %s:%u.%u.%u.%u:%d:%s\n",
2527 ifname, HIPQUAD(ip), *kiblnd_tunables.kib_service,
2530 pd = ib_alloc_pd(id->device);
2532 CERROR("Can't allocate PD: %ld\n", PTR_ERR(pd));
2538 rc = rdma_listen(id, 256);
2540 CERROR("Can't start listener: %d\n", rc);
2544 rc = kiblnd_dev_setup(ibdev);
2546 CERROR("Can't setup device: %d\n", rc);
2551 ni->ni_nid = LNET_MKNID(LNET_NIDNET(ni->ni_nid), ibdev->ibd_ifip);
2552 net->ibn_dev = ibdev;
2554 rc = kiblnd_net_init_pools(net);
2556 CERROR("Failed to initialize NI pools: %d\n", rc);
2560 net->ibn_init = IBLND_INIT_ALL;
2565 if (net->ibn_dev == NULL && ibdev != NULL)
2566 kiblnd_destroy_dev(ibdev);
2568 kiblnd_shutdown(ni);
2570 CDEBUG(D_NET, "kiblnd_startup failed\n");
2575 kiblnd_module_fini (void)
2577 lnet_unregister_lnd(&the_o2iblnd);
2578 kiblnd_tunables_fini();
2582 kiblnd_module_init (void)
2586 CLASSERT (sizeof(kib_msg_t) <= IBLND_MSG_SIZE);
2587 CLASSERT (offsetof(kib_msg_t, ibm_u.get.ibgm_rd.rd_frags[IBLND_MAX_RDMA_FRAGS])
2589 CLASSERT (offsetof(kib_msg_t, ibm_u.putack.ibpam_rd.rd_frags[IBLND_MAX_RDMA_FRAGS])
2592 rc = kiblnd_tunables_init();
2596 lnet_register_lnd(&the_o2iblnd);
2601 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2602 MODULE_DESCRIPTION("Kernel OpenIB gen2 LND v2.00");
2603 MODULE_LICENSE("GPL");
2605 module_init(kiblnd_module_init);
2606 module_exit(kiblnd_module_fini);