2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
4 * Copyright (c) 2006 Mellanox Technologies. All rights reserved
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
40 #ifdef CONFIG_INFINIBAND_IPOIB_CM
42 #include <netinet/ip.h>
43 #include <netinet/ip_icmp.h>
44 #include <netinet/icmp6.h>
46 #include <rdma/ib_cm.h>
47 #include <rdma/ib_cache.h>
48 #include <linux/delay.h>
50 int ipoib_max_conn_qp = 128;
52 module_param_named(max_nonsrq_conn_qp, ipoib_max_conn_qp, int, 0444);
53 MODULE_PARM_DESC(max_nonsrq_conn_qp,
54 "Max number of connected-mode QPs per interface "
55 "(applied only if shared receive queue is not available)");
57 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
58 static int data_debug_level;
60 module_param_named(cm_data_debug_level, data_debug_level, int, 0644);
61 MODULE_PARM_DESC(cm_data_debug_level,
62 "Enable data path debug tracing for connected mode if > 0");
65 #define IPOIB_CM_IETF_ID 0x1000000000000000ULL
67 #define IPOIB_CM_RX_UPDATE_TIME (256 * HZ)
68 #define IPOIB_CM_RX_TIMEOUT (2 * 256 * HZ)
69 #define IPOIB_CM_RX_DELAY (3 * 256 * HZ)
70 #define IPOIB_CM_RX_UPDATE_MASK (0x3)
72 static struct ib_qp_attr ipoib_cm_err_attr = {
73 .qp_state = IB_QPS_ERR
76 #define IPOIB_CM_RX_DRAIN_WRID 0xffffffff
78 static struct ib_send_wr ipoib_cm_rx_drain_wr = {
79 .wr_id = IPOIB_CM_RX_DRAIN_WRID,
83 static int ipoib_cm_tx_handler(struct ib_cm_id *cm_id,
84 struct ib_cm_event *event);
86 static void ipoib_cm_dma_unmap_rx(struct ipoib_dev_priv *priv, struct ipoib_cm_rx_buf *rx_req)
89 ipoib_dma_unmap_rx(priv, (struct ipoib_rx_buf *)rx_req);
93 static int ipoib_cm_post_receive_srq(struct ipoib_dev_priv *priv, int id)
95 struct ib_recv_wr *bad_wr;
96 struct ipoib_rx_buf *rx_req;
101 rx_req = (struct ipoib_rx_buf *)&priv->cm.srq_ring[id];
102 for (m = rx_req->mb, i = 0; m != NULL; m = m->m_next, i++) {
103 priv->cm.rx_sge[i].addr = rx_req->mapping[i];
104 priv->cm.rx_sge[i].length = m->m_len;
107 priv->cm.rx_wr.num_sge = i;
108 priv->cm.rx_wr.wr_id = id | IPOIB_OP_CM | IPOIB_OP_RECV;
110 ret = ib_post_srq_recv(priv->cm.srq, &priv->cm.rx_wr, &bad_wr);
112 ipoib_warn(priv, "post srq failed for buf %d (%d)\n", id, ret);
113 ipoib_dma_unmap_rx(priv, rx_req);
114 m_freem(priv->cm.srq_ring[id].mb);
115 priv->cm.srq_ring[id].mb = NULL;
121 static int ipoib_cm_post_receive_nonsrq(struct ipoib_dev_priv *priv,
122 struct ipoib_cm_rx *rx,
123 struct ib_recv_wr *wr,
124 struct ib_sge *sge, int id)
126 struct ipoib_rx_buf *rx_req;
127 struct ib_recv_wr *bad_wr;
132 rx_req = (struct ipoib_rx_buf *)&rx->rx_ring[id];
133 for (m = rx_req->mb, i = 0; m != NULL; m = m->m_next, i++) {
134 sge[i].addr = rx_req->mapping[i];
135 sge[i].length = m->m_len;
139 wr->wr_id = id | IPOIB_OP_CM | IPOIB_OP_RECV;
141 ret = ib_post_recv(rx->qp, wr, &bad_wr);
143 ipoib_warn(priv, "post recv failed for buf %d (%d)\n", id, ret);
144 ipoib_dma_unmap_rx(priv, rx_req);
145 m_freem(rx->rx_ring[id].mb);
146 rx->rx_ring[id].mb = NULL;
153 ipoib_cm_alloc_rx_mb(struct ipoib_dev_priv *priv, struct ipoib_cm_rx_buf *rx_req)
155 return ipoib_alloc_map_mb(priv, (struct ipoib_rx_buf *)rx_req,
156 priv->cm.max_cm_mtu);
159 static void ipoib_cm_free_rx_ring(struct ipoib_dev_priv *priv,
160 struct ipoib_cm_rx_buf *rx_ring)
164 for (i = 0; i < ipoib_recvq_size; ++i)
166 ipoib_cm_dma_unmap_rx(priv, &rx_ring[i]);
167 m_freem(rx_ring[i].mb);
173 static void ipoib_cm_start_rx_drain(struct ipoib_dev_priv *priv)
175 struct ib_send_wr *bad_wr;
176 struct ipoib_cm_rx *p;
178 /* We only reserved 1 extra slot in CQ for drain WRs, so
179 * make sure we have at most 1 outstanding WR. */
180 if (list_empty(&priv->cm.rx_flush_list) ||
181 !list_empty(&priv->cm.rx_drain_list))
185 * QPs on flush list are error state. This way, a "flush
186 * error" WC will be immediately generated for each WR we post.
188 p = list_entry(priv->cm.rx_flush_list.next, typeof(*p), list);
189 if (ib_post_send(p->qp, &ipoib_cm_rx_drain_wr, &bad_wr))
190 ipoib_warn(priv, "failed to post drain wr\n");
192 list_splice_init(&priv->cm.rx_flush_list, &priv->cm.rx_drain_list);
195 static void ipoib_cm_rx_event_handler(struct ib_event *event, void *ctx)
197 struct ipoib_cm_rx *p = ctx;
198 struct ipoib_dev_priv *priv = p->priv;
201 if (event->event != IB_EVENT_QP_LAST_WQE_REACHED)
204 spin_lock_irqsave(&priv->lock, flags);
205 list_move(&p->list, &priv->cm.rx_flush_list);
206 p->state = IPOIB_CM_RX_FLUSH;
207 ipoib_cm_start_rx_drain(priv);
208 spin_unlock_irqrestore(&priv->lock, flags);
211 static struct ib_qp *ipoib_cm_create_rx_qp(struct ipoib_dev_priv *priv,
212 struct ipoib_cm_rx *p)
214 struct ib_qp_init_attr attr = {
215 .event_handler = ipoib_cm_rx_event_handler,
216 .send_cq = priv->recv_cq, /* For drain WR */
217 .recv_cq = priv->recv_cq,
219 .cap.max_send_wr = 1, /* For drain WR */
220 .cap.max_send_sge = 1,
221 .sq_sig_type = IB_SIGNAL_ALL_WR,
222 .qp_type = IB_QPT_RC,
226 if (!ipoib_cm_has_srq(priv)) {
227 attr.cap.max_recv_wr = ipoib_recvq_size;
228 attr.cap.max_recv_sge = priv->cm.num_frags;
231 return ib_create_qp(priv->pd, &attr);
234 static int ipoib_cm_modify_rx_qp(struct ipoib_dev_priv *priv,
235 struct ib_cm_id *cm_id, struct ib_qp *qp,
238 struct ib_qp_attr qp_attr;
239 int qp_attr_mask, ret;
241 qp_attr.qp_state = IB_QPS_INIT;
242 ret = ib_cm_init_qp_attr(cm_id, &qp_attr, &qp_attr_mask);
244 ipoib_warn(priv, "failed to init QP attr for INIT: %d\n", ret);
247 ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask);
249 ipoib_warn(priv, "failed to modify QP to INIT: %d\n", ret);
252 qp_attr.qp_state = IB_QPS_RTR;
253 ret = ib_cm_init_qp_attr(cm_id, &qp_attr, &qp_attr_mask);
255 ipoib_warn(priv, "failed to init QP attr for RTR: %d\n", ret);
258 qp_attr.rq_psn = psn;
259 ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask);
261 ipoib_warn(priv, "failed to modify QP to RTR: %d\n", ret);
266 * Current Mellanox HCA firmware won't generate completions
267 * with error for drain WRs unless the QP has been moved to
268 * RTS first. This work-around leaves a window where a QP has
269 * moved to error asynchronously, but this will eventually get
270 * fixed in firmware, so let's not error out if modify QP
273 qp_attr.qp_state = IB_QPS_RTS;
274 ret = ib_cm_init_qp_attr(cm_id, &qp_attr, &qp_attr_mask);
276 ipoib_warn(priv, "failed to init QP attr for RTS: %d\n", ret);
279 ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask);
281 ipoib_warn(priv, "failed to modify QP to RTS: %d\n", ret);
288 static void ipoib_cm_init_rx_wr(struct ipoib_dev_priv *priv,
289 struct ib_recv_wr *wr,
294 for (i = 0; i < IPOIB_CM_RX_SG; i++)
295 sge[i].lkey = priv->pd->local_dma_lkey;
302 static int ipoib_cm_nonsrq_init_rx(struct ipoib_dev_priv *priv,
303 struct ib_cm_id *cm_id, struct ipoib_cm_rx *rx)
306 struct ib_recv_wr wr;
307 struct ib_sge sge[IPOIB_CM_RX_SG];
312 rx->rx_ring = kzalloc(ipoib_recvq_size * sizeof *rx->rx_ring, GFP_KERNEL);
314 printk(KERN_WARNING "%s: failed to allocate CM non-SRQ ring (%d entries)\n",
315 priv->ca->name, ipoib_recvq_size);
319 memset(rx->rx_ring, 0, ipoib_recvq_size * sizeof *rx->rx_ring);
321 t = kmalloc(sizeof *t, GFP_KERNEL);
327 ipoib_cm_init_rx_wr(priv, &t->wr, t->sge);
329 spin_lock_irq(&priv->lock);
331 if (priv->cm.nonsrq_conn_qp >= ipoib_max_conn_qp) {
332 spin_unlock_irq(&priv->lock);
333 ib_send_cm_rej(cm_id, IB_CM_REJ_NO_QP, NULL, 0, NULL, 0);
337 ++priv->cm.nonsrq_conn_qp;
339 spin_unlock_irq(&priv->lock);
341 for (i = 0; i < ipoib_recvq_size; ++i) {
342 if (!ipoib_cm_alloc_rx_mb(priv, &rx->rx_ring[i])) {
343 ipoib_warn(priv, "failed to allocate receive buffer %d\n", i);
347 ret = ipoib_cm_post_receive_nonsrq(priv, rx, &t->wr, t->sge, i);
349 ipoib_warn(priv, "ipoib_cm_post_receive_nonsrq "
350 "failed for buf %d\n", i);
356 rx->recv_count = ipoib_recvq_size;
363 spin_lock_irq(&priv->lock);
364 --priv->cm.nonsrq_conn_qp;
365 spin_unlock_irq(&priv->lock);
369 ipoib_cm_free_rx_ring(priv, rx->rx_ring);
374 static int ipoib_cm_send_rep(struct ipoib_dev_priv *priv, struct ib_cm_id *cm_id,
375 struct ib_qp *qp, struct ib_cm_req_event_param *req,
378 struct ipoib_cm_data data = {};
379 struct ib_cm_rep_param rep = {};
381 data.qpn = cpu_to_be32(priv->qp->qp_num);
382 data.mtu = cpu_to_be32(priv->cm.max_cm_mtu);
384 rep.private_data = &data;
385 rep.private_data_len = sizeof data;
386 rep.flow_control = 0;
387 rep.rnr_retry_count = req->rnr_retry_count;
388 rep.srq = ipoib_cm_has_srq(priv);
389 rep.qp_num = qp->qp_num;
390 rep.starting_psn = psn;
391 return ib_send_cm_rep(cm_id, &rep);
394 static int ipoib_cm_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event)
396 struct ipoib_dev_priv *priv = cm_id->context;
397 struct ipoib_cm_rx *p;
401 ipoib_dbg(priv, "REQ arrived\n");
402 p = kzalloc(sizeof *p, GFP_KERNEL);
408 p->state = IPOIB_CM_RX_LIVE;
409 p->jiffies = jiffies;
410 INIT_LIST_HEAD(&p->list);
412 p->qp = ipoib_cm_create_rx_qp(priv, p);
414 ret = PTR_ERR(p->qp);
418 psn = random() & 0xffffff;
419 ret = ipoib_cm_modify_rx_qp(priv, cm_id, p->qp, psn);
423 if (!ipoib_cm_has_srq(priv)) {
424 ret = ipoib_cm_nonsrq_init_rx(priv, cm_id, p);
429 spin_lock_irq(&priv->lock);
430 queue_delayed_work(ipoib_workqueue,
431 &priv->cm.stale_task, IPOIB_CM_RX_DELAY);
432 /* Add this entry to passive ids list head, but do not re-add it
433 * if IB_EVENT_QP_LAST_WQE_REACHED has moved it to flush list. */
434 p->jiffies = jiffies;
435 if (p->state == IPOIB_CM_RX_LIVE)
436 list_move(&p->list, &priv->cm.passive_ids);
437 spin_unlock_irq(&priv->lock);
439 ret = ipoib_cm_send_rep(priv, cm_id, p->qp, &event->param.req_rcvd, psn);
441 ipoib_warn(priv, "failed to send REP: %d\n", ret);
442 if (ib_modify_qp(p->qp, &ipoib_cm_err_attr, IB_QP_STATE))
443 ipoib_warn(priv, "unable to move qp to error state\n");
448 ib_destroy_qp(p->qp);
454 static int ipoib_cm_rx_handler(struct ib_cm_id *cm_id,
455 struct ib_cm_event *event)
457 struct ipoib_cm_rx *p;
458 struct ipoib_dev_priv *priv;
460 switch (event->event) {
461 case IB_CM_REQ_RECEIVED:
462 return ipoib_cm_req_handler(cm_id, event);
463 case IB_CM_DREQ_RECEIVED:
465 ib_send_cm_drep(cm_id, NULL, 0);
467 case IB_CM_REJ_RECEIVED:
470 if (ib_modify_qp(p->qp, &ipoib_cm_err_attr, IB_QP_STATE))
471 ipoib_warn(priv, "unable to move qp to error state\n");
478 void ipoib_cm_handle_rx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc)
480 struct ipoib_cm_rx_buf saverx;
481 struct ipoib_cm_rx_buf *rx_ring;
482 unsigned int wr_id = wc->wr_id & ~(IPOIB_OP_CM | IPOIB_OP_RECV);
483 struct ifnet *dev = priv->dev;
484 struct mbuf *mb, *newmb;
485 struct ipoib_cm_rx *p;
489 CURVNET_SET_QUIET(dev->if_vnet);
491 ipoib_dbg_data(priv, "cm recv completion: id %d, status: %d\n",
494 if (unlikely(wr_id >= ipoib_recvq_size)) {
495 if (wr_id == (IPOIB_CM_RX_DRAIN_WRID & ~(IPOIB_OP_CM | IPOIB_OP_RECV))) {
496 spin_lock(&priv->lock);
497 list_splice_init(&priv->cm.rx_drain_list, &priv->cm.rx_reap_list);
498 ipoib_cm_start_rx_drain(priv);
499 if (priv->cm.id != NULL)
500 queue_work(ipoib_workqueue,
501 &priv->cm.rx_reap_task);
502 spin_unlock(&priv->lock);
504 ipoib_warn(priv, "cm recv completion event with wrid %d (> %d)\n",
505 wr_id, ipoib_recvq_size);
509 p = wc->qp->qp_context;
511 has_srq = ipoib_cm_has_srq(priv);
512 rx_ring = has_srq ? priv->cm.srq_ring : p->rx_ring;
514 mb = rx_ring[wr_id].mb;
516 if (unlikely(wc->status != IB_WC_SUCCESS)) {
517 ipoib_dbg(priv, "cm recv error "
518 "(status=%d, wrid=%d vend_err %x)\n",
519 wc->status, wr_id, wc->vendor_err);
520 if_inc_counter(dev, IFCOUNTER_IERRORS, 1);
524 if (!--p->recv_count) {
525 spin_lock(&priv->lock);
526 list_move(&p->list, &priv->cm.rx_reap_list);
527 queue_work(ipoib_workqueue, &priv->cm.rx_reap_task);
528 spin_unlock(&priv->lock);
534 if (unlikely(!(wr_id & IPOIB_CM_RX_UPDATE_MASK))) {
535 if (p && time_after_eq(jiffies, p->jiffies + IPOIB_CM_RX_UPDATE_TIME)) {
536 p->jiffies = jiffies;
537 /* Move this entry to list head, but do not re-add it
538 * if it has been moved out of list. */
539 if (p->state == IPOIB_CM_RX_LIVE)
540 list_move(&p->list, &priv->cm.passive_ids);
544 memcpy(&saverx, &rx_ring[wr_id], sizeof(saverx));
545 newmb = ipoib_cm_alloc_rx_mb(priv, &rx_ring[wr_id]);
546 if (unlikely(!newmb)) {
548 * If we can't allocate a new RX buffer, dump
549 * this packet and reuse the old buffer.
551 ipoib_dbg(priv, "failed to allocate receive buffer %d\n", wr_id);
552 if_inc_counter(dev, IFCOUNTER_IERRORS, 1);
553 memcpy(&rx_ring[wr_id], &saverx, sizeof(saverx));
557 ipoib_cm_dma_unmap_rx(priv, &saverx);
559 ipoib_dbg_data(priv, "received %d bytes, SLID 0x%04x\n",
560 wc->byte_len, wc->slid);
562 ipoib_dma_mb(priv, mb, wc->byte_len);
564 if_inc_counter(dev, IFCOUNTER_IPACKETS, 1);
565 if_inc_counter(dev, IFCOUNTER_IBYTES, mb->m_pkthdr.len);
567 mb->m_pkthdr.rcvif = dev;
568 proto = *mtod(mb, uint16_t *);
569 m_adj(mb, IPOIB_ENCAP_LEN);
571 IPOIB_MTAP_PROTO(dev, mb, proto);
572 ipoib_demux(dev, mb, ntohs(proto));
576 if (unlikely(ipoib_cm_post_receive_srq(priv, wr_id)))
577 ipoib_warn(priv, "ipoib_cm_post_receive_srq failed "
578 "for buf %d\n", wr_id);
580 if (unlikely(ipoib_cm_post_receive_nonsrq(priv, p,
585 ipoib_warn(priv, "ipoib_cm_post_receive_nonsrq failed "
586 "for buf %d\n", wr_id);
594 static inline int post_send(struct ipoib_dev_priv *priv,
595 struct ipoib_cm_tx *tx,
596 struct ipoib_cm_tx_buf *tx_req,
599 struct ib_send_wr *bad_wr;
600 struct mbuf *mb = tx_req->mb;
601 u64 *mapping = tx_req->mapping;
605 for (m = mb, i = 0; m != NULL; m = m->m_next, i++) {
606 priv->tx_sge[i].addr = mapping[i];
607 priv->tx_sge[i].length = m->m_len;
609 priv->tx_wr.wr.num_sge = i;
610 priv->tx_wr.wr.wr_id = wr_id | IPOIB_OP_CM;
611 priv->tx_wr.wr.opcode = IB_WR_SEND;
613 return ib_post_send(tx->qp, &priv->tx_wr.wr, &bad_wr);
616 void ipoib_cm_send(struct ipoib_dev_priv *priv, struct mbuf *mb, struct ipoib_cm_tx *tx)
618 struct ipoib_cm_tx_buf *tx_req;
619 struct ifnet *dev = priv->dev;
621 if (unlikely(priv->tx_outstanding > MAX_SEND_CQE))
622 while (ipoib_poll_tx(priv)); /* nothing */
624 m_adj(mb, sizeof(struct ipoib_pseudoheader));
625 if (unlikely(mb->m_pkthdr.len > tx->mtu)) {
626 ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n",
627 mb->m_pkthdr.len, tx->mtu);
628 if_inc_counter(dev, IFCOUNTER_OERRORS, 1);
629 ipoib_cm_mb_too_long(priv, mb, IPOIB_CM_MTU(tx->mtu));
633 ipoib_dbg_data(priv, "sending packet: head 0x%x length %d connection 0x%x\n",
634 tx->tx_head, mb->m_pkthdr.len, tx->qp->qp_num);
638 * We put the mb into the tx_ring _before_ we call post_send()
639 * because it's entirely possible that the completion handler will
640 * run before we execute anything after the post_send(). That
641 * means we have to make sure everything is properly recorded and
642 * our state is consistent before we call post_send().
644 tx_req = &tx->tx_ring[tx->tx_head & (ipoib_sendq_size - 1)];
646 if (unlikely(ipoib_dma_map_tx(priv->ca, (struct ipoib_tx_buf *)tx_req,
647 priv->cm.num_frags))) {
648 if_inc_counter(dev, IFCOUNTER_OERRORS, 1);
654 if (unlikely(post_send(priv, tx, tx_req, tx->tx_head & (ipoib_sendq_size - 1)))) {
655 ipoib_warn(priv, "post_send failed\n");
656 if_inc_counter(dev, IFCOUNTER_OERRORS, 1);
657 ipoib_dma_unmap_tx(priv->ca, (struct ipoib_tx_buf *)tx_req);
662 if (++priv->tx_outstanding == ipoib_sendq_size) {
663 ipoib_dbg(priv, "TX ring 0x%x full, stopping kernel net queue\n",
665 if (ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP))
666 ipoib_warn(priv, "request notify on send CQ failed\n");
667 dev->if_drv_flags |= IFF_DRV_OACTIVE;
673 void ipoib_cm_handle_tx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc)
675 struct ipoib_cm_tx *tx = wc->qp->qp_context;
676 unsigned int wr_id = wc->wr_id & ~IPOIB_OP_CM;
677 struct ifnet *dev = priv->dev;
678 struct ipoib_cm_tx_buf *tx_req;
680 ipoib_dbg_data(priv, "cm send completion: id %d, status: %d\n",
683 if (unlikely(wr_id >= ipoib_sendq_size)) {
684 ipoib_warn(priv, "cm send completion event with wrid %d (> %d)\n",
685 wr_id, ipoib_sendq_size);
689 tx_req = &tx->tx_ring[wr_id];
691 ipoib_dma_unmap_tx(priv->ca, (struct ipoib_tx_buf *)tx_req);
693 /* FIXME: is this right? Shouldn't we only increment on success? */
694 if_inc_counter(dev, IFCOUNTER_OPACKETS, 1);
699 if (unlikely(--priv->tx_outstanding == ipoib_sendq_size >> 1) &&
700 (dev->if_drv_flags & IFF_DRV_OACTIVE) != 0 &&
701 test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
702 dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
704 if (wc->status != IB_WC_SUCCESS &&
705 wc->status != IB_WC_WR_FLUSH_ERR) {
706 struct ipoib_path *path;
708 ipoib_dbg(priv, "failed cm send event "
709 "(status=%d, wrid=%d vend_err %x)\n",
710 wc->status, wr_id, wc->vendor_err);
716 rb_erase(&path->rb_node, &priv->path_tree);
717 list_del(&path->list);
720 if (test_and_clear_bit(IPOIB_FLAG_INITIALIZED, &tx->flags)) {
721 list_move(&tx->list, &priv->cm.reap_list);
722 queue_work(ipoib_workqueue, &priv->cm.reap_task);
725 clear_bit(IPOIB_FLAG_OPER_UP, &tx->flags);
730 int ipoib_cm_dev_open(struct ipoib_dev_priv *priv)
734 if (!IPOIB_CM_SUPPORTED(IF_LLADDR(priv->dev)))
737 priv->cm.id = ib_create_cm_id(priv->ca, ipoib_cm_rx_handler, priv);
738 if (IS_ERR(priv->cm.id)) {
739 printk(KERN_WARNING "%s: failed to create CM ID\n", priv->ca->name);
740 ret = PTR_ERR(priv->cm.id);
744 ret = ib_cm_listen(priv->cm.id, cpu_to_be64(IPOIB_CM_IETF_ID | priv->qp->qp_num), 0);
746 printk(KERN_WARNING "%s: failed to listen on ID 0x%llx\n", priv->ca->name,
747 IPOIB_CM_IETF_ID | priv->qp->qp_num);
754 ib_destroy_cm_id(priv->cm.id);
760 static void ipoib_cm_free_rx_reap_list(struct ipoib_dev_priv *priv)
762 struct ipoib_cm_rx *rx, *n;
765 spin_lock_irq(&priv->lock);
766 list_splice_init(&priv->cm.rx_reap_list, &list);
767 spin_unlock_irq(&priv->lock);
769 list_for_each_entry_safe(rx, n, &list, list) {
770 ib_destroy_cm_id(rx->id);
771 ib_destroy_qp(rx->qp);
772 if (!ipoib_cm_has_srq(priv)) {
773 ipoib_cm_free_rx_ring(priv, rx->rx_ring);
774 spin_lock_irq(&priv->lock);
775 --priv->cm.nonsrq_conn_qp;
776 spin_unlock_irq(&priv->lock);
782 void ipoib_cm_dev_stop(struct ipoib_dev_priv *priv)
784 struct ipoib_cm_rx *p;
788 if (!IPOIB_CM_SUPPORTED(IF_LLADDR(priv->dev)) || !priv->cm.id)
791 ib_destroy_cm_id(priv->cm.id);
794 cancel_work_sync(&priv->cm.rx_reap_task);
796 spin_lock_irq(&priv->lock);
797 while (!list_empty(&priv->cm.passive_ids)) {
798 p = list_entry(priv->cm.passive_ids.next, typeof(*p), list);
799 list_move(&p->list, &priv->cm.rx_error_list);
800 p->state = IPOIB_CM_RX_ERROR;
801 spin_unlock_irq(&priv->lock);
802 ret = ib_modify_qp(p->qp, &ipoib_cm_err_attr, IB_QP_STATE);
804 ipoib_warn(priv, "unable to move qp to error state: %d\n", ret);
805 spin_lock_irq(&priv->lock);
808 /* Wait for all RX to be drained */
811 while (!list_empty(&priv->cm.rx_error_list) ||
812 !list_empty(&priv->cm.rx_flush_list) ||
813 !list_empty(&priv->cm.rx_drain_list)) {
814 if (time_after(jiffies, begin + 5 * HZ)) {
815 ipoib_warn(priv, "RX drain timing out\n");
818 * assume the HW is wedged and just free up everything.
820 list_splice_init(&priv->cm.rx_flush_list,
821 &priv->cm.rx_reap_list);
822 list_splice_init(&priv->cm.rx_error_list,
823 &priv->cm.rx_reap_list);
824 list_splice_init(&priv->cm.rx_drain_list,
825 &priv->cm.rx_reap_list);
828 spin_unlock_irq(&priv->lock);
830 ipoib_drain_cq(priv);
831 spin_lock_irq(&priv->lock);
834 spin_unlock_irq(&priv->lock);
836 ipoib_cm_free_rx_reap_list(priv);
838 cancel_delayed_work_sync(&priv->cm.stale_task);
841 static int ipoib_cm_rep_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event)
843 struct ipoib_cm_tx *p = cm_id->context;
844 struct ipoib_dev_priv *priv = p->priv;
845 struct ipoib_cm_data *data = event->private_data;
846 struct ifqueue mbqueue;
847 struct ib_qp_attr qp_attr;
848 int qp_attr_mask, ret;
851 ipoib_dbg(priv, "cm rep handler\n");
852 p->mtu = be32_to_cpu(data->mtu);
854 if (p->mtu <= IPOIB_ENCAP_LEN) {
855 ipoib_warn(priv, "Rejecting connection: mtu %d <= %d\n",
856 p->mtu, IPOIB_ENCAP_LEN);
860 qp_attr.qp_state = IB_QPS_RTR;
861 ret = ib_cm_init_qp_attr(cm_id, &qp_attr, &qp_attr_mask);
863 ipoib_warn(priv, "failed to init QP attr for RTR: %d\n", ret);
867 qp_attr.rq_psn = 0 /* FIXME */;
868 ret = ib_modify_qp(p->qp, &qp_attr, qp_attr_mask);
870 ipoib_warn(priv, "failed to modify QP to RTR: %d\n", ret);
874 qp_attr.qp_state = IB_QPS_RTS;
875 ret = ib_cm_init_qp_attr(cm_id, &qp_attr, &qp_attr_mask);
877 ipoib_warn(priv, "failed to init QP attr for RTS: %d\n", ret);
880 ret = ib_modify_qp(p->qp, &qp_attr, qp_attr_mask);
882 ipoib_warn(priv, "failed to modify QP to RTS: %d\n", ret);
886 bzero(&mbqueue, sizeof(mbqueue));
888 spin_lock_irq(&priv->lock);
889 set_bit(IPOIB_FLAG_OPER_UP, &p->flags);
892 _IF_DEQUEUE(&p->path->queue, mb);
895 _IF_ENQUEUE(&mbqueue, mb);
897 spin_unlock_irq(&priv->lock);
900 struct ifnet *dev = p->priv->dev;
901 _IF_DEQUEUE(&mbqueue, mb);
904 mb->m_pkthdr.rcvif = dev;
905 if (dev->if_transmit(dev, mb))
906 ipoib_warn(priv, "dev_queue_xmit failed "
907 "to requeue packet\n");
910 ret = ib_send_cm_rtu(cm_id, NULL, 0);
912 ipoib_warn(priv, "failed to send RTU: %d\n", ret);
918 static struct ib_qp *ipoib_cm_create_tx_qp(struct ipoib_dev_priv *priv,
919 struct ipoib_cm_tx *tx)
921 struct ib_qp_init_attr attr = {
922 .send_cq = priv->send_cq,
923 .recv_cq = priv->recv_cq,
925 .cap.max_send_wr = ipoib_sendq_size,
926 .cap.max_send_sge = priv->cm.num_frags,
927 .sq_sig_type = IB_SIGNAL_ALL_WR,
928 .qp_type = IB_QPT_RC,
932 return ib_create_qp(priv->pd, &attr);
935 static int ipoib_cm_send_req(struct ipoib_dev_priv *priv,
936 struct ib_cm_id *id, struct ib_qp *qp,
938 struct ib_sa_path_rec *pathrec)
940 struct ipoib_cm_data data = {};
941 struct ib_cm_req_param req = {};
943 ipoib_dbg(priv, "cm send req\n");
945 data.qpn = cpu_to_be32(priv->qp->qp_num);
946 data.mtu = cpu_to_be32(priv->cm.max_cm_mtu);
948 req.primary_path = pathrec;
949 req.alternate_path = NULL;
950 req.service_id = cpu_to_be64(IPOIB_CM_IETF_ID | qpn);
951 req.qp_num = qp->qp_num;
952 req.qp_type = qp->qp_type;
953 req.private_data = &data;
954 req.private_data_len = sizeof data;
955 req.flow_control = 0;
957 req.starting_psn = 0; /* FIXME */
960 * Pick some arbitrary defaults here; we could make these
961 * module parameters if anyone cared about setting them.
963 req.responder_resources = 4;
964 req.remote_cm_response_timeout = 20;
965 req.local_cm_response_timeout = 20;
966 req.retry_count = 0; /* RFC draft warns against retries */
967 req.rnr_retry_count = 0; /* RFC draft warns against retries */
968 req.max_cm_retries = 15;
969 req.srq = ipoib_cm_has_srq(priv);
970 return ib_send_cm_req(id, &req);
973 static int ipoib_cm_modify_tx_init(struct ipoib_dev_priv *priv,
974 struct ib_cm_id *cm_id, struct ib_qp *qp)
976 struct ib_qp_attr qp_attr;
977 int qp_attr_mask, ret;
978 ret = ib_find_pkey(priv->ca, priv->port, priv->pkey, &qp_attr.pkey_index);
980 ipoib_warn(priv, "pkey 0x%x not found: %d\n", priv->pkey, ret);
984 qp_attr.qp_state = IB_QPS_INIT;
985 qp_attr.qp_access_flags = IB_ACCESS_LOCAL_WRITE;
986 qp_attr.port_num = priv->port;
987 qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PORT;
989 ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask);
991 ipoib_warn(priv, "failed to modify tx QP to INIT: %d\n", ret);
997 static int ipoib_cm_tx_init(struct ipoib_cm_tx *p, u32 qpn,
998 struct ib_sa_path_rec *pathrec)
1000 struct ipoib_dev_priv *priv = p->priv;
1003 p->tx_ring = kzalloc(ipoib_sendq_size * sizeof *p->tx_ring, GFP_KERNEL);
1005 ipoib_warn(priv, "failed to allocate tx ring\n");
1009 memset(p->tx_ring, 0, ipoib_sendq_size * sizeof *p->tx_ring);
1011 p->qp = ipoib_cm_create_tx_qp(p->priv, p);
1012 if (IS_ERR(p->qp)) {
1013 ret = PTR_ERR(p->qp);
1014 ipoib_warn(priv, "failed to allocate tx qp: %d\n", ret);
1018 p->id = ib_create_cm_id(priv->ca, ipoib_cm_tx_handler, p);
1019 if (IS_ERR(p->id)) {
1020 ret = PTR_ERR(p->id);
1021 ipoib_warn(priv, "failed to create tx cm id: %d\n", ret);
1025 ret = ipoib_cm_modify_tx_init(p->priv, p->id, p->qp);
1027 ipoib_warn(priv, "failed to modify tx qp to rtr: %d\n", ret);
1031 ret = ipoib_cm_send_req(p->priv, p->id, p->qp, qpn, pathrec);
1033 ipoib_warn(priv, "failed to send cm req: %d\n", ret);
1037 ipoib_dbg(priv, "Request connection 0x%x for gid %pI6 qpn 0x%x\n",
1038 p->qp->qp_num, pathrec->dgid.raw, qpn);
1044 ib_destroy_cm_id(p->id);
1047 ib_destroy_qp(p->qp);
1055 static void ipoib_cm_tx_destroy(struct ipoib_cm_tx *p)
1057 struct ipoib_dev_priv *priv = p->priv;
1058 struct ifnet *dev = priv->dev;
1059 struct ipoib_cm_tx_buf *tx_req;
1060 unsigned long begin;
1062 ipoib_dbg(priv, "Destroy active connection 0x%x head 0x%x tail 0x%x\n",
1063 p->qp ? p->qp->qp_num : 0, p->tx_head, p->tx_tail);
1066 ipoib_path_free(priv, p->path);
1069 ib_destroy_cm_id(p->id);
1072 /* Wait for all sends to complete */
1074 while ((int) p->tx_tail - (int) p->tx_head < 0) {
1075 if (time_after(jiffies, begin + 5 * HZ)) {
1076 ipoib_warn(priv, "timing out; %d sends not completed\n",
1077 p->tx_head - p->tx_tail);
1087 while ((int) p->tx_tail - (int) p->tx_head < 0) {
1088 tx_req = &p->tx_ring[p->tx_tail & (ipoib_sendq_size - 1)];
1089 ipoib_dma_unmap_tx(priv->ca, (struct ipoib_tx_buf *)tx_req);
1090 m_freem(tx_req->mb);
1092 if (unlikely(--priv->tx_outstanding == ipoib_sendq_size >> 1) &&
1093 (dev->if_drv_flags & IFF_DRV_OACTIVE) != 0 &&
1094 test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
1095 dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
1099 ib_destroy_qp(p->qp);
1105 static int ipoib_cm_tx_handler(struct ib_cm_id *cm_id,
1106 struct ib_cm_event *event)
1108 struct ipoib_cm_tx *tx = cm_id->context;
1109 struct ipoib_dev_priv *priv = tx->priv;
1110 struct ipoib_path *path;
1111 unsigned long flags;
1114 switch (event->event) {
1115 case IB_CM_DREQ_RECEIVED:
1116 ipoib_dbg(priv, "DREQ received.\n");
1117 ib_send_cm_drep(cm_id, NULL, 0);
1119 case IB_CM_REP_RECEIVED:
1120 ipoib_dbg(priv, "REP received.\n");
1121 ret = ipoib_cm_rep_handler(cm_id, event);
1123 ib_send_cm_rej(cm_id, IB_CM_REJ_CONSUMER_DEFINED,
1126 case IB_CM_REQ_ERROR:
1127 case IB_CM_REJ_RECEIVED:
1128 case IB_CM_TIMEWAIT_EXIT:
1129 ipoib_dbg(priv, "CM error %d.\n", event->event);
1130 spin_lock_irqsave(&priv->lock, flags);
1136 rb_erase(&path->rb_node, &priv->path_tree);
1137 list_del(&path->list);
1140 if (test_and_clear_bit(IPOIB_FLAG_INITIALIZED, &tx->flags)) {
1141 list_move(&tx->list, &priv->cm.reap_list);
1142 queue_work(ipoib_workqueue, &priv->cm.reap_task);
1145 spin_unlock_irqrestore(&priv->lock, flags);
1147 ipoib_path_free(tx->priv, path);
1156 struct ipoib_cm_tx *ipoib_cm_create_tx(struct ipoib_dev_priv *priv,
1157 struct ipoib_path *path)
1159 struct ipoib_cm_tx *tx;
1161 tx = kzalloc(sizeof *tx, GFP_ATOMIC);
1165 ipoib_dbg(priv, "Creating cm tx\n");
1169 list_add(&tx->list, &priv->cm.start_list);
1170 set_bit(IPOIB_FLAG_INITIALIZED, &tx->flags);
1171 queue_work(ipoib_workqueue, &priv->cm.start_task);
1175 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
1177 struct ipoib_dev_priv *priv = tx->priv;
1178 if (test_and_clear_bit(IPOIB_FLAG_INITIALIZED, &tx->flags)) {
1179 spin_lock(&priv->lock);
1180 list_move(&tx->list, &priv->cm.reap_list);
1181 spin_unlock(&priv->lock);
1182 queue_work(ipoib_workqueue, &priv->cm.reap_task);
1183 ipoib_dbg(priv, "Reap connection for gid %pI6\n",
1184 tx->path->pathrec.dgid.raw);
1189 static void ipoib_cm_tx_start(struct work_struct *work)
1191 struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv,
1193 struct ipoib_path *path;
1194 struct ipoib_cm_tx *p;
1195 unsigned long flags;
1198 struct ib_sa_path_rec pathrec;
1201 ipoib_dbg(priv, "cm start task\n");
1202 spin_lock_irqsave(&priv->lock, flags);
1204 while (!list_empty(&priv->cm.start_list)) {
1205 p = list_entry(priv->cm.start_list.next, typeof(*p), list);
1206 list_del_init(&p->list);
1208 qpn = IPOIB_QPN(path->hwaddr);
1209 memcpy(&pathrec, &p->path->pathrec, sizeof pathrec);
1211 spin_unlock_irqrestore(&priv->lock, flags);
1213 ret = ipoib_cm_tx_init(p, qpn, &pathrec);
1215 spin_lock_irqsave(&priv->lock, flags);
1221 rb_erase(&path->rb_node, &priv->path_tree);
1222 list_del(&path->list);
1223 ipoib_path_free(priv, path);
1230 spin_unlock_irqrestore(&priv->lock, flags);
1233 static void ipoib_cm_tx_reap(struct work_struct *work)
1235 struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv,
1237 struct ipoib_cm_tx *p;
1238 unsigned long flags;
1240 spin_lock_irqsave(&priv->lock, flags);
1242 while (!list_empty(&priv->cm.reap_list)) {
1243 p = list_entry(priv->cm.reap_list.next, typeof(*p), list);
1245 spin_unlock_irqrestore(&priv->lock, flags);
1246 ipoib_cm_tx_destroy(p);
1247 spin_lock_irqsave(&priv->lock, flags);
1250 spin_unlock_irqrestore(&priv->lock, flags);
1253 static void ipoib_cm_mb_reap(struct work_struct *work)
1255 struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv,
1258 unsigned long flags;
1259 #if defined(INET) || defined(INET6)
1260 unsigned mtu = priv->mcast_mtu;
1264 spin_lock_irqsave(&priv->lock, flags);
1267 IF_DEQUEUE(&priv->cm.mb_queue, mb);
1270 spin_unlock_irqrestore(&priv->lock, flags);
1272 proto = htons(*mtod(mb, uint16_t *));
1273 m_adj(mb, IPOIB_ENCAP_LEN);
1277 icmp_error(mb, ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG, 0, mtu);
1281 case ETHERTYPE_IPV6:
1282 icmp6_error(mb, ICMP6_PACKET_TOO_BIG, 0, mtu);
1289 spin_lock_irqsave(&priv->lock, flags);
1292 spin_unlock_irqrestore(&priv->lock, flags);
1296 ipoib_cm_mb_too_long(struct ipoib_dev_priv *priv, struct mbuf *mb, unsigned int mtu)
1298 int e = priv->cm.mb_queue.ifq_len;
1300 IF_ENQUEUE(&priv->cm.mb_queue, mb);
1302 queue_work(ipoib_workqueue, &priv->cm.mb_task);
1305 static void ipoib_cm_rx_reap(struct work_struct *work)
1307 ipoib_cm_free_rx_reap_list(container_of(work, struct ipoib_dev_priv,
1311 static void ipoib_cm_stale_task(struct work_struct *work)
1313 struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv,
1314 cm.stale_task.work);
1315 struct ipoib_cm_rx *p;
1318 spin_lock_irq(&priv->lock);
1319 while (!list_empty(&priv->cm.passive_ids)) {
1320 /* List is sorted by LRU, start from tail,
1321 * stop when we see a recently used entry */
1322 p = list_entry(priv->cm.passive_ids.prev, typeof(*p), list);
1323 if (time_before_eq(jiffies, p->jiffies + IPOIB_CM_RX_TIMEOUT))
1325 list_move(&p->list, &priv->cm.rx_error_list);
1326 p->state = IPOIB_CM_RX_ERROR;
1327 spin_unlock_irq(&priv->lock);
1328 ret = ib_modify_qp(p->qp, &ipoib_cm_err_attr, IB_QP_STATE);
1330 ipoib_warn(priv, "unable to move qp to error state: %d\n", ret);
1331 spin_lock_irq(&priv->lock);
1334 if (!list_empty(&priv->cm.passive_ids))
1335 queue_delayed_work(ipoib_workqueue,
1336 &priv->cm.stale_task, IPOIB_CM_RX_DELAY);
1337 spin_unlock_irq(&priv->lock);
1341 static void ipoib_cm_create_srq(struct ipoib_dev_priv *priv, int max_sge)
1343 struct ib_srq_init_attr srq_init_attr = {
1345 .max_wr = ipoib_recvq_size,
1350 priv->cm.srq = ib_create_srq(priv->pd, &srq_init_attr);
1351 if (IS_ERR(priv->cm.srq)) {
1352 if (PTR_ERR(priv->cm.srq) != -ENOSYS)
1353 printk(KERN_WARNING "%s: failed to allocate SRQ, error %ld\n",
1354 priv->ca->name, PTR_ERR(priv->cm.srq));
1355 priv->cm.srq = NULL;
1359 priv->cm.srq_ring = kzalloc(ipoib_recvq_size * sizeof *priv->cm.srq_ring, GFP_KERNEL);
1360 if (!priv->cm.srq_ring) {
1361 printk(KERN_WARNING "%s: failed to allocate CM SRQ ring (%d entries)\n",
1362 priv->ca->name, ipoib_recvq_size);
1363 ib_destroy_srq(priv->cm.srq);
1364 priv->cm.srq = NULL;
1368 memset(priv->cm.srq_ring, 0, ipoib_recvq_size * sizeof *priv->cm.srq_ring);
1371 int ipoib_cm_dev_init(struct ipoib_dev_priv *priv)
1373 struct ifnet *dev = priv->dev;
1377 INIT_LIST_HEAD(&priv->cm.passive_ids);
1378 INIT_LIST_HEAD(&priv->cm.reap_list);
1379 INIT_LIST_HEAD(&priv->cm.start_list);
1380 INIT_LIST_HEAD(&priv->cm.rx_error_list);
1381 INIT_LIST_HEAD(&priv->cm.rx_flush_list);
1382 INIT_LIST_HEAD(&priv->cm.rx_drain_list);
1383 INIT_LIST_HEAD(&priv->cm.rx_reap_list);
1384 INIT_WORK(&priv->cm.start_task, ipoib_cm_tx_start);
1385 INIT_WORK(&priv->cm.reap_task, ipoib_cm_tx_reap);
1386 INIT_WORK(&priv->cm.mb_task, ipoib_cm_mb_reap);
1387 INIT_WORK(&priv->cm.rx_reap_task, ipoib_cm_rx_reap);
1388 INIT_DELAYED_WORK(&priv->cm.stale_task, ipoib_cm_stale_task);
1390 bzero(&priv->cm.mb_queue, sizeof(priv->cm.mb_queue));
1391 mtx_init(&priv->cm.mb_queue.ifq_mtx,
1392 dev->if_xname, "if send queue", MTX_DEF);
1394 max_srq_sge = priv->ca->attrs.max_srq_sge;
1396 ipoib_dbg(priv, "max_srq_sge=%d\n", max_srq_sge);
1398 max_srq_sge = min_t(int, IPOIB_CM_RX_SG, max_srq_sge);
1399 ipoib_cm_create_srq(priv, max_srq_sge);
1400 if (ipoib_cm_has_srq(priv)) {
1401 priv->cm.max_cm_mtu = max_srq_sge * MJUMPAGESIZE;
1402 priv->cm.num_frags = max_srq_sge;
1403 ipoib_dbg(priv, "max_cm_mtu = 0x%x, num_frags=%d\n",
1404 priv->cm.max_cm_mtu, priv->cm.num_frags);
1406 priv->cm.max_cm_mtu = IPOIB_CM_MAX_MTU;
1407 priv->cm.num_frags = IPOIB_CM_RX_SG;
1410 ipoib_cm_init_rx_wr(priv, &priv->cm.rx_wr, priv->cm.rx_sge);
1412 if (ipoib_cm_has_srq(priv)) {
1413 for (i = 0; i < ipoib_recvq_size; ++i) {
1414 if (!ipoib_cm_alloc_rx_mb(priv, &priv->cm.srq_ring[i])) {
1415 ipoib_warn(priv, "failed to allocate "
1416 "receive buffer %d\n", i);
1417 ipoib_cm_dev_cleanup(priv);
1421 if (ipoib_cm_post_receive_srq(priv, i)) {
1422 ipoib_warn(priv, "ipoib_cm_post_receive_srq "
1423 "failed for buf %d\n", i);
1424 ipoib_cm_dev_cleanup(priv);
1430 IF_LLADDR(priv->dev)[0] = IPOIB_FLAGS_RC;
1434 void ipoib_cm_dev_cleanup(struct ipoib_dev_priv *priv)
1441 ipoib_dbg(priv, "Cleanup ipoib connected mode.\n");
1443 ret = ib_destroy_srq(priv->cm.srq);
1445 ipoib_warn(priv, "ib_destroy_srq failed: %d\n", ret);
1447 priv->cm.srq = NULL;
1448 if (!priv->cm.srq_ring)
1451 ipoib_cm_free_rx_ring(priv, priv->cm.srq_ring);
1452 priv->cm.srq_ring = NULL;
1454 mtx_destroy(&priv->cm.mb_queue.ifq_mtx);
1457 #endif /* CONFIG_INFINIBAND_IPOIB_CM */