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,
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_sendq_size + ipoib_recvq_size + 1;
175 ret = ipoib_cm_dev_init(dev);
177 if (ipoib_cm_has_srq(dev))
178 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */
180 size += ipoib_recvq_size * ipoib_max_conn_qp;
183 priv->cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0);
184 if (IS_ERR(priv->cq)) {
185 printk(KERN_WARNING "%s: failed to create CQ\n", ca->name);
189 if (ib_req_notify_cq(priv->cq, IB_CQ_NEXT_COMP))
192 init_attr.send_cq = priv->cq;
193 init_attr.recv_cq = priv->cq;
195 if (dev->features & NETIF_F_SG)
196 init_attr.cap.max_send_sge = MAX_SKB_FRAGS + 1;
198 priv->qp = ib_create_qp(priv->pd, &init_attr);
199 if (IS_ERR(priv->qp)) {
200 printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
204 priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff;
205 priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff;
206 priv->dev->dev_addr[3] = (priv->qp->qp_num ) & 0xff;
208 for (i = 0; i < MAX_SKB_FRAGS + 1; ++i)
209 priv->tx_sge[i].lkey = priv->mr->lkey;
211 priv->tx_wr.opcode = IB_WR_SEND;
212 priv->tx_wr.sg_list = priv->tx_sge;
213 priv->tx_wr.send_flags = IB_SEND_SIGNALED;
218 ib_destroy_cq(priv->cq);
221 ib_dereg_mr(priv->mr);
222 ipoib_cm_dev_cleanup(dev);
225 ib_dealloc_pd(priv->pd);
229 void ipoib_transport_dev_cleanup(struct net_device *dev)
231 struct ipoib_dev_priv *priv = netdev_priv(dev);
234 if (ib_destroy_qp(priv->qp))
235 ipoib_warn(priv, "ib_qp_destroy failed\n");
238 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
241 if (ib_destroy_cq(priv->cq))
242 ipoib_warn(priv, "ib_cq_destroy failed\n");
244 ipoib_cm_dev_cleanup(dev);
246 if (ib_dereg_mr(priv->mr))
247 ipoib_warn(priv, "ib_dereg_mr failed\n");
249 if (ib_dealloc_pd(priv->pd))
250 ipoib_warn(priv, "ib_dealloc_pd failed\n");
253 void ipoib_event(struct ib_event_handler *handler,
254 struct ib_event *record)
256 struct ipoib_dev_priv *priv =
257 container_of(handler, struct ipoib_dev_priv, event_handler);
259 if (record->element.port_num != priv->port)
262 if (record->event == IB_EVENT_PORT_ERR ||
263 record->event == IB_EVENT_PORT_ACTIVE ||
264 record->event == IB_EVENT_LID_CHANGE ||
265 record->event == IB_EVENT_SM_CHANGE ||
266 record->event == IB_EVENT_CLIENT_REREGISTER) {
267 ipoib_dbg(priv, "Port state change event\n");
268 queue_work(ipoib_workqueue, &priv->flush_task);
269 } else if (record->event == IB_EVENT_PKEY_CHANGE) {
270 ipoib_dbg(priv, "P_Key change event on port:%d\n", priv->port);
271 queue_work(ipoib_workqueue, &priv->pkey_event_task);