2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
4 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
41 int ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid, union ib_gid *mgid, int set_qkey)
43 struct ib_qp_attr *qp_attr = NULL;
47 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) {
48 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
52 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
56 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL);
60 /* set correct QKey for QP */
61 qp_attr->qkey = priv->qkey;
62 ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY);
64 ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret);
69 /* attach QP to multicast group */
70 ret = ib_attach_mcast(priv->qp, mgid, mlid);
72 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret);
79 int ipoib_init_qp(struct ipoib_dev_priv *priv)
82 struct ib_qp_attr qp_attr;
85 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags))
88 qp_attr.qp_state = IB_QPS_INIT;
90 qp_attr.port_num = priv->port;
91 qp_attr.pkey_index = priv->pkey_index;
98 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
100 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret);
104 qp_attr.qp_state = IB_QPS_RTR;
105 /* Can't set this in a INIT->RTR transition */
106 attr_mask &= ~IB_QP_PORT;
107 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
109 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret);
113 qp_attr.qp_state = IB_QPS_RTS;
115 attr_mask |= IB_QP_SQ_PSN;
116 attr_mask &= ~IB_QP_PKEY_INDEX;
117 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
119 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret);
126 qp_attr.qp_state = IB_QPS_RESET;
127 if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
128 ipoib_warn(priv, "Failed to modify QP to RESET state\n");
133 int ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca)
135 struct ib_qp_init_attr init_attr = {
137 .max_send_wr = ipoib_sendq_size,
138 .max_recv_wr = ipoib_recvq_size,
140 .max_recv_sge = IPOIB_UD_RX_SG
142 .sq_sig_type = IB_SIGNAL_ALL_WR,
145 struct ib_cq_init_attr cq_attr = {};
149 /* XXX struct ethtool_coalesce *coal; */
151 priv->pd = ib_alloc_pd(priv->ca, 0);
152 if (IS_ERR(priv->pd)) {
153 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name);
157 size = ipoib_recvq_size + 1;
158 ret = ipoib_cm_dev_init(priv);
160 size += ipoib_sendq_size;
161 if (ipoib_cm_has_srq(priv))
162 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */
164 size += ipoib_recvq_size * ipoib_max_conn_qp;
168 priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, priv, &cq_attr);
169 if (IS_ERR(priv->recv_cq)) {
170 printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name);
174 cq_attr.cqe = ipoib_sendq_size;
175 priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL,
177 if (IS_ERR(priv->send_cq)) {
178 printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name);
179 goto out_free_recv_cq;
182 if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP))
183 goto out_free_send_cq;
187 coal = kzalloc(sizeof *coal, GFP_KERNEL);
189 coal->rx_coalesce_usecs = 10;
190 coal->tx_coalesce_usecs = 10;
191 coal->rx_max_coalesced_frames = 16;
192 coal->tx_max_coalesced_frames = 16;
193 dev->ethtool_ops->set_coalesce(dev, coal);
198 init_attr.send_cq = priv->send_cq;
199 init_attr.recv_cq = priv->recv_cq;
201 if (priv->hca_caps & IB_DEVICE_UD_TSO)
202 init_attr.create_flags |= IB_QP_CREATE_IPOIB_UD_LSO;
204 if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK)
205 init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
207 init_attr.cap.max_send_sge = IPOIB_UD_TX_SG;
209 priv->qp = ib_create_qp(priv->pd, &init_attr);
210 if (IS_ERR(priv->qp)) {
211 printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
212 goto out_free_send_cq;
215 IF_LLADDR(priv->dev)[1] = (priv->qp->qp_num >> 16) & 0xff;
216 IF_LLADDR(priv->dev)[2] = (priv->qp->qp_num >> 8) & 0xff;
217 IF_LLADDR(priv->dev)[3] = (priv->qp->qp_num ) & 0xff;
219 for (i = 0; i < IPOIB_MAX_TX_SG; ++i)
220 priv->tx_sge[i].lkey = priv->pd->local_dma_lkey;
222 priv->tx_wr.wr.opcode = IB_WR_SEND;
223 priv->tx_wr.wr.sg_list = priv->tx_sge;
224 priv->tx_wr.wr.send_flags = IB_SEND_SIGNALED;
226 for (i = 0; i < IPOIB_UD_RX_SG; ++i)
227 priv->rx_sge[i].lkey = priv->pd->local_dma_lkey;
228 priv->rx_wr.next = NULL;
229 priv->rx_wr.sg_list = priv->rx_sge;
234 ib_destroy_cq(priv->send_cq);
237 ib_destroy_cq(priv->recv_cq);
240 ipoib_cm_dev_cleanup(priv);
242 ib_dealloc_pd(priv->pd);
246 void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv)
250 if (ib_destroy_qp(priv->qp))
251 ipoib_warn(priv, "ib_qp_destroy failed\n");
254 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
257 if (ib_destroy_cq(priv->send_cq))
258 ipoib_warn(priv, "ib_cq_destroy (send) failed\n");
260 if (ib_destroy_cq(priv->recv_cq))
261 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n");
263 ipoib_cm_dev_cleanup(priv);
265 ib_dealloc_pd(priv->pd);
268 void ipoib_event(struct ib_event_handler *handler,
269 struct ib_event *record)
271 struct ipoib_dev_priv *priv =
272 container_of(handler, struct ipoib_dev_priv, event_handler);
274 if (record->element.port_num != priv->port)
277 ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event,
278 record->device->name, record->element.port_num);
280 if (record->event == IB_EVENT_SM_CHANGE ||
281 record->event == IB_EVENT_CLIENT_REREGISTER) {
282 queue_work(ipoib_workqueue, &priv->flush_light);
283 } else if (record->event == IB_EVENT_PORT_ERR ||
284 record->event == IB_EVENT_PORT_ACTIVE ||
285 record->event == IB_EVENT_LID_CHANGE ||
286 record->event == IB_EVENT_DEVICE_FATAL) {
287 queue_work(ipoib_workqueue, &priv->flush_normal);
288 } else if (record->event == IB_EVENT_PKEY_CHANGE) {
289 queue_work(ipoib_workqueue, &priv->flush_heavy);