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
36 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
38 struct ipoib_dev_priv *priv = netdev_priv(dev);
39 struct ib_qp_attr *qp_attr;
44 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL);
48 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) {
49 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
53 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
55 /* set correct QKey for QP */
56 qp_attr->qkey = priv->qkey;
57 ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY);
59 ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret);
63 /* attach QP to multicast group */
64 mutex_lock(&priv->mcast_mutex);
65 ret = ib_attach_mcast(priv->qp, mgid, mlid);
66 mutex_unlock(&priv->mcast_mutex);
68 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret);
75 int ipoib_mcast_detach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
77 struct ipoib_dev_priv *priv = netdev_priv(dev);
80 mutex_lock(&priv->mcast_mutex);
81 ret = ib_detach_mcast(priv->qp, mgid, mlid);
82 mutex_unlock(&priv->mcast_mutex);
84 ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret);
89 int ipoib_init_qp(struct net_device *dev)
91 struct ipoib_dev_priv *priv = netdev_priv(dev);
93 struct ib_qp_attr qp_attr;
96 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags))
99 qp_attr.qp_state = IB_QPS_INIT;
101 qp_attr.port_num = priv->port;
102 qp_attr.pkey_index = priv->pkey_index;
108 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
110 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret);
114 qp_attr.qp_state = IB_QPS_RTR;
115 /* Can't set this in a INIT->RTR transition */
116 attr_mask &= ~IB_QP_PORT;
117 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
119 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret);
123 qp_attr.qp_state = IB_QPS_RTS;
125 attr_mask |= IB_QP_SQ_PSN;
126 attr_mask &= ~IB_QP_PKEY_INDEX;
127 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
129 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret);
136 qp_attr.qp_state = IB_QPS_RESET;
137 if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
138 ipoib_warn(priv, "Failed to modify QP to RESET state\n");
143 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
145 struct ipoib_dev_priv *priv = netdev_priv(dev);
146 struct ib_qp_init_attr init_attr = {
148 .max_send_wr = ipoib_sendq_size,
149 .max_recv_wr = ipoib_recvq_size,
151 .max_recv_sge = IPOIB_UD_RX_SG
153 .sq_sig_type = IB_SIGNAL_ALL_WR,
160 priv->pd = ib_alloc_pd(priv->ca);
161 if (IS_ERR(priv->pd)) {
162 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name);
166 priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE);
167 if (IS_ERR(priv->mr)) {
168 printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name);
172 size = ipoib_recvq_size + 1;
173 ret = ipoib_cm_dev_init(dev);
175 size += ipoib_sendq_size;
176 if (ipoib_cm_has_srq(dev))
177 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */
179 size += ipoib_recvq_size * ipoib_max_conn_qp;
182 priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0);
183 if (IS_ERR(priv->recv_cq)) {
184 printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name);
188 priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL,
189 dev, ipoib_sendq_size, 0);
190 if (IS_ERR(priv->send_cq)) {
191 printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name);
192 goto out_free_recv_cq;
195 if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP))
196 goto out_free_send_cq;
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 if (dev->features & NETIF_F_SG)
208 init_attr.cap.max_send_sge = MAX_SKB_FRAGS + 1;
210 priv->qp = ib_create_qp(priv->pd, &init_attr);
211 if (IS_ERR(priv->qp)) {
212 printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
213 goto out_free_send_cq;
216 priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff;
217 priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff;
218 priv->dev->dev_addr[3] = (priv->qp->qp_num ) & 0xff;
220 for (i = 0; i < MAX_SKB_FRAGS + 1; ++i)
221 priv->tx_sge[i].lkey = priv->mr->lkey;
223 priv->tx_wr.opcode = IB_WR_SEND;
224 priv->tx_wr.sg_list = priv->tx_sge;
225 priv->tx_wr.send_flags = IB_SEND_SIGNALED;
227 priv->rx_sge[0].lkey = priv->mr->lkey;
228 if (ipoib_ud_need_sg(priv->max_ib_mtu)) {
229 priv->rx_sge[0].length = IPOIB_UD_HEAD_SIZE;
230 priv->rx_sge[1].length = PAGE_SIZE;
231 priv->rx_sge[1].lkey = priv->mr->lkey;
232 priv->rx_wr.num_sge = IPOIB_UD_RX_SG;
234 priv->rx_sge[0].length = IPOIB_UD_BUF_SIZE(priv->max_ib_mtu);
235 priv->rx_wr.num_sge = 1;
237 priv->rx_wr.next = NULL;
238 priv->rx_wr.sg_list = priv->rx_sge;
243 ib_destroy_cq(priv->send_cq);
246 ib_destroy_cq(priv->recv_cq);
249 ib_dereg_mr(priv->mr);
250 ipoib_cm_dev_cleanup(dev);
253 ib_dealloc_pd(priv->pd);
257 void ipoib_transport_dev_cleanup(struct net_device *dev)
259 struct ipoib_dev_priv *priv = netdev_priv(dev);
262 if (ib_destroy_qp(priv->qp))
263 ipoib_warn(priv, "ib_qp_destroy failed\n");
266 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
269 if (ib_destroy_cq(priv->send_cq))
270 ipoib_warn(priv, "ib_cq_destroy (send) failed\n");
272 if (ib_destroy_cq(priv->recv_cq))
273 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n");
275 ipoib_cm_dev_cleanup(dev);
277 if (ib_dereg_mr(priv->mr))
278 ipoib_warn(priv, "ib_dereg_mr failed\n");
280 if (ib_dealloc_pd(priv->pd))
281 ipoib_warn(priv, "ib_dealloc_pd failed\n");
284 void ipoib_event(struct ib_event_handler *handler,
285 struct ib_event *record)
287 struct ipoib_dev_priv *priv =
288 container_of(handler, struct ipoib_dev_priv, event_handler);
290 if (record->element.port_num != priv->port)
293 ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event,
294 record->device->name, record->element.port_num);
296 if (record->event == IB_EVENT_SM_CHANGE ||
297 record->event == IB_EVENT_CLIENT_REREGISTER) {
298 queue_work(ipoib_workqueue, &priv->flush_light);
299 } else if (record->event == IB_EVENT_PORT_ERR ||
300 record->event == IB_EVENT_PORT_ACTIVE ||
301 record->event == IB_EVENT_LID_CHANGE) {
302 queue_work(ipoib_workqueue, &priv->flush_normal);
303 } else if (record->event == IB_EVENT_PKEY_CHANGE) {
304 queue_work(ipoib_workqueue, &priv->flush_heavy);