2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * $Id: ipoib_verbs.c 1349 2004-12-16 21:09:43Z roland $
38 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
40 struct ipoib_dev_priv *priv = netdev_priv(dev);
41 struct ib_qp_attr *qp_attr;
46 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL);
50 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) {
51 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
55 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
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);
65 /* attach QP to multicast group */
66 mutex_lock(&priv->mcast_mutex);
67 ret = ib_attach_mcast(priv->qp, mgid, mlid);
68 mutex_unlock(&priv->mcast_mutex);
70 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret);
77 int ipoib_mcast_detach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
79 struct ipoib_dev_priv *priv = netdev_priv(dev);
82 mutex_lock(&priv->mcast_mutex);
83 ret = ib_detach_mcast(priv->qp, mgid, mlid);
84 mutex_unlock(&priv->mcast_mutex);
86 ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret);
91 int ipoib_init_qp(struct net_device *dev)
93 struct ipoib_dev_priv *priv = netdev_priv(dev);
95 struct ib_qp_attr qp_attr;
98 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags))
101 qp_attr.qp_state = IB_QPS_INIT;
103 qp_attr.port_num = priv->port;
104 qp_attr.pkey_index = priv->pkey_index;
110 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
112 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret);
116 qp_attr.qp_state = IB_QPS_RTR;
117 /* Can't set this in a INIT->RTR transition */
118 attr_mask &= ~IB_QP_PORT;
119 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
121 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret);
125 qp_attr.qp_state = IB_QPS_RTS;
127 attr_mask |= IB_QP_SQ_PSN;
128 attr_mask &= ~IB_QP_PKEY_INDEX;
129 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
131 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret);
138 qp_attr.qp_state = IB_QPS_RESET;
139 if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
140 ipoib_warn(priv, "Failed to modify QP to RESET state\n");
145 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
147 struct ipoib_dev_priv *priv = netdev_priv(dev);
148 struct ib_qp_init_attr init_attr = {
150 .max_send_wr = ipoib_sendq_size,
151 .max_recv_wr = ipoib_recvq_size,
153 .max_recv_sge = IPOIB_UD_RX_SG
155 .sq_sig_type = IB_SIGNAL_ALL_WR,
162 priv->pd = ib_alloc_pd(priv->ca);
163 if (IS_ERR(priv->pd)) {
164 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name);
168 priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE);
169 if (IS_ERR(priv->mr)) {
170 printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name);
174 size = ipoib_recvq_size + 1;
175 ret = ipoib_cm_dev_init(dev);
177 size += ipoib_sendq_size;
178 if (ipoib_cm_has_srq(dev))
179 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */
181 size += ipoib_recvq_size * ipoib_max_conn_qp;
184 priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0);
185 if (IS_ERR(priv->recv_cq)) {
186 printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name);
190 priv->send_cq = ib_create_cq(priv->ca, NULL, NULL, dev, ipoib_sendq_size, 0);
191 if (IS_ERR(priv->send_cq)) {
192 printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name);
193 goto out_free_recv_cq;
196 if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP))
197 goto out_free_send_cq;
199 init_attr.send_cq = priv->send_cq;
200 init_attr.recv_cq = priv->recv_cq;
202 if (priv->hca_caps & IB_DEVICE_UD_TSO)
203 init_attr.create_flags = IB_QP_CREATE_IPOIB_UD_LSO;
205 if (dev->features & NETIF_F_SG)
206 init_attr.cap.max_send_sge = MAX_SKB_FRAGS + 1;
208 priv->qp = ib_create_qp(priv->pd, &init_attr);
209 if (IS_ERR(priv->qp)) {
210 printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
211 goto out_free_send_cq;
214 priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff;
215 priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff;
216 priv->dev->dev_addr[3] = (priv->qp->qp_num ) & 0xff;
218 for (i = 0; i < MAX_SKB_FRAGS + 1; ++i)
219 priv->tx_sge[i].lkey = priv->mr->lkey;
221 priv->tx_wr.opcode = IB_WR_SEND;
222 priv->tx_wr.sg_list = priv->tx_sge;
223 priv->tx_wr.send_flags = IB_SEND_SIGNALED;
225 priv->rx_sge[0].lkey = priv->mr->lkey;
226 if (ipoib_ud_need_sg(priv->max_ib_mtu)) {
227 priv->rx_sge[0].length = IPOIB_UD_HEAD_SIZE;
228 priv->rx_sge[1].length = PAGE_SIZE;
229 priv->rx_sge[1].lkey = priv->mr->lkey;
230 priv->rx_wr.num_sge = IPOIB_UD_RX_SG;
232 priv->rx_sge[0].length = IPOIB_UD_BUF_SIZE(priv->max_ib_mtu);
233 priv->rx_wr.num_sge = 1;
235 priv->rx_wr.next = NULL;
236 priv->rx_wr.sg_list = priv->rx_sge;
241 ib_destroy_cq(priv->send_cq);
244 ib_destroy_cq(priv->recv_cq);
247 ib_dereg_mr(priv->mr);
248 ipoib_cm_dev_cleanup(dev);
251 ib_dealloc_pd(priv->pd);
255 void ipoib_transport_dev_cleanup(struct net_device *dev)
257 struct ipoib_dev_priv *priv = netdev_priv(dev);
260 if (ib_destroy_qp(priv->qp))
261 ipoib_warn(priv, "ib_qp_destroy failed\n");
264 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
267 if (ib_destroy_cq(priv->send_cq))
268 ipoib_warn(priv, "ib_cq_destroy (send) failed\n");
270 if (ib_destroy_cq(priv->recv_cq))
271 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n");
273 ipoib_cm_dev_cleanup(dev);
275 if (ib_dereg_mr(priv->mr))
276 ipoib_warn(priv, "ib_dereg_mr failed\n");
278 if (ib_dealloc_pd(priv->pd))
279 ipoib_warn(priv, "ib_dealloc_pd failed\n");
282 void ipoib_event(struct ib_event_handler *handler,
283 struct ib_event *record)
285 struct ipoib_dev_priv *priv =
286 container_of(handler, struct ipoib_dev_priv, event_handler);
288 if (record->element.port_num != priv->port)
291 if (record->event == IB_EVENT_PORT_ERR ||
292 record->event == IB_EVENT_PORT_ACTIVE ||
293 record->event == IB_EVENT_LID_CHANGE ||
294 record->event == IB_EVENT_SM_CHANGE ||
295 record->event == IB_EVENT_CLIENT_REREGISTER) {
296 ipoib_dbg(priv, "Port state change event\n");
297 queue_work(ipoib_workqueue, &priv->flush_task);
298 } else if (record->event == IB_EVENT_PKEY_CHANGE) {
299 ipoib_dbg(priv, "P_Key change event on port:%d\n", priv->port);
300 queue_work(ipoib_workqueue, &priv->pkey_event_task);