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
38 int ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid, union ib_gid *mgid, int set_qkey)
40 struct ib_qp_attr *qp_attr = NULL;
44 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) {
45 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
49 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
53 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL);
57 /* set correct QKey for QP */
58 qp_attr->qkey = priv->qkey;
59 ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY);
61 ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret);
66 /* attach QP to multicast group */
67 ret = ib_attach_mcast(priv->qp, mgid, mlid);
69 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret);
76 int ipoib_init_qp(struct ipoib_dev_priv *priv)
79 struct ib_qp_attr qp_attr;
82 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags))
85 qp_attr.qp_state = IB_QPS_INIT;
87 qp_attr.port_num = priv->port;
88 qp_attr.pkey_index = priv->pkey_index;
95 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
97 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret);
101 qp_attr.qp_state = IB_QPS_RTR;
102 /* Can't set this in a INIT->RTR transition */
103 attr_mask &= ~IB_QP_PORT;
104 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
106 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret);
110 qp_attr.qp_state = IB_QPS_RTS;
112 attr_mask |= IB_QP_SQ_PSN;
113 attr_mask &= ~IB_QP_PKEY_INDEX;
114 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
116 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret);
123 qp_attr.qp_state = IB_QPS_RESET;
124 if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
125 ipoib_warn(priv, "Failed to modify QP to RESET state\n");
130 int ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca)
132 struct ib_qp_init_attr init_attr = {
134 .max_send_wr = ipoib_sendq_size,
135 .max_recv_wr = ipoib_recvq_size,
137 .max_recv_sge = IPOIB_UD_RX_SG
139 .sq_sig_type = IB_SIGNAL_ALL_WR,
142 struct ib_cq_init_attr cq_attr = {};
146 /* XXX struct ethtool_coalesce *coal; */
148 priv->pd = ib_alloc_pd(priv->ca, 0);
149 if (IS_ERR(priv->pd)) {
150 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name);
154 size = ipoib_recvq_size + 1;
155 ret = ipoib_cm_dev_init(priv);
157 size += ipoib_sendq_size;
158 if (ipoib_cm_has_srq(priv))
159 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */
161 size += ipoib_recvq_size * ipoib_max_conn_qp;
165 priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, priv, &cq_attr);
166 if (IS_ERR(priv->recv_cq)) {
167 printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name);
171 cq_attr.cqe = ipoib_sendq_size;
172 priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL,
174 if (IS_ERR(priv->send_cq)) {
175 printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name);
176 goto out_free_recv_cq;
179 if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP))
180 goto out_free_send_cq;
184 coal = kzalloc(sizeof *coal, GFP_KERNEL);
186 coal->rx_coalesce_usecs = 10;
187 coal->tx_coalesce_usecs = 10;
188 coal->rx_max_coalesced_frames = 16;
189 coal->tx_max_coalesced_frames = 16;
190 dev->ethtool_ops->set_coalesce(dev, coal);
195 init_attr.send_cq = priv->send_cq;
196 init_attr.recv_cq = priv->recv_cq;
198 if (priv->hca_caps & IB_DEVICE_UD_TSO)
199 init_attr.create_flags |= IB_QP_CREATE_IPOIB_UD_LSO;
201 if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK)
202 init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
204 init_attr.cap.max_send_sge = IPOIB_UD_TX_SG;
206 priv->qp = ib_create_qp(priv->pd, &init_attr);
207 if (IS_ERR(priv->qp)) {
208 printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
209 goto out_free_send_cq;
212 IF_LLADDR(priv->dev)[1] = (priv->qp->qp_num >> 16) & 0xff;
213 IF_LLADDR(priv->dev)[2] = (priv->qp->qp_num >> 8) & 0xff;
214 IF_LLADDR(priv->dev)[3] = (priv->qp->qp_num ) & 0xff;
216 for (i = 0; i < IPOIB_MAX_TX_SG; ++i)
217 priv->tx_sge[i].lkey = priv->pd->local_dma_lkey;
219 priv->tx_wr.wr.opcode = IB_WR_SEND;
220 priv->tx_wr.wr.sg_list = priv->tx_sge;
221 priv->tx_wr.wr.send_flags = IB_SEND_SIGNALED;
223 for (i = 0; i < IPOIB_UD_RX_SG; ++i)
224 priv->rx_sge[i].lkey = priv->pd->local_dma_lkey;
225 priv->rx_wr.next = NULL;
226 priv->rx_wr.sg_list = priv->rx_sge;
231 ib_destroy_cq(priv->send_cq);
234 ib_destroy_cq(priv->recv_cq);
237 ipoib_cm_dev_cleanup(priv);
239 ib_dealloc_pd(priv->pd);
243 void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv)
247 if (ib_destroy_qp(priv->qp))
248 ipoib_warn(priv, "ib_qp_destroy failed\n");
251 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
254 if (ib_destroy_cq(priv->send_cq))
255 ipoib_warn(priv, "ib_cq_destroy (send) failed\n");
257 if (ib_destroy_cq(priv->recv_cq))
258 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n");
260 ipoib_cm_dev_cleanup(priv);
262 ib_dealloc_pd(priv->pd);
265 void ipoib_event(struct ib_event_handler *handler,
266 struct ib_event *record)
268 struct ipoib_dev_priv *priv =
269 container_of(handler, struct ipoib_dev_priv, event_handler);
271 if (record->element.port_num != priv->port)
274 ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event,
275 record->device->name, record->element.port_num);
277 if (record->event == IB_EVENT_SM_CHANGE ||
278 record->event == IB_EVENT_CLIENT_REREGISTER) {
279 queue_work(ipoib_workqueue, &priv->flush_light);
280 } else if (record->event == IB_EVENT_PORT_ERR ||
281 record->event == IB_EVENT_PORT_ACTIVE ||
282 record->event == IB_EVENT_LID_CHANGE) {
283 queue_work(ipoib_workqueue, &priv->flush_normal);
284 } else if (record->event == IB_EVENT_PKEY_CHANGE) {
285 queue_work(ipoib_workqueue, &priv->flush_heavy);