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 $
36 #include <rdma/ib_cache.h>
40 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
42 struct ipoib_dev_priv *priv = netdev_priv(dev);
43 struct ib_qp_attr *qp_attr;
49 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL);
53 if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) {
54 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
58 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
60 /* set correct QKey for QP */
61 qp_attr->qkey = priv->qkey;
62 attr_mask = IB_QP_QKEY;
63 ret = ib_modify_qp(priv->qp, qp_attr, attr_mask);
65 ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret);
69 /* attach QP to multicast group */
70 down(&priv->mcast_mutex);
71 ret = ib_attach_mcast(priv->qp, mgid, mlid);
72 up(&priv->mcast_mutex);
74 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret);
81 int ipoib_mcast_detach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
83 struct ipoib_dev_priv *priv = netdev_priv(dev);
86 down(&priv->mcast_mutex);
87 ret = ib_detach_mcast(priv->qp, mgid, mlid);
88 up(&priv->mcast_mutex);
90 ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret);
95 int ipoib_init_qp(struct net_device *dev)
97 struct ipoib_dev_priv *priv = netdev_priv(dev);
100 struct ib_qp_attr qp_attr;
104 * Search through the port P_Key table for the requested pkey value.
105 * The port has to be assigned to the respective IB partition in
108 ret = ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index);
110 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
113 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
115 qp_attr.qp_state = IB_QPS_INIT;
117 qp_attr.port_num = priv->port;
118 qp_attr.pkey_index = pkey_index;
124 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
126 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret);
130 qp_attr.qp_state = IB_QPS_RTR;
131 /* Can't set this in a INIT->RTR transition */
132 attr_mask &= ~IB_QP_PORT;
133 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
135 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret);
139 qp_attr.qp_state = IB_QPS_RTS;
141 attr_mask |= IB_QP_SQ_PSN;
142 attr_mask &= ~IB_QP_PKEY_INDEX;
143 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
145 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret);
152 qp_attr.qp_state = IB_QPS_RESET;
153 if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
154 ipoib_warn(priv, "Failed to modify QP to RESET state\n");
159 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
161 struct ipoib_dev_priv *priv = netdev_priv(dev);
162 struct ib_qp_init_attr init_attr = {
164 .max_send_wr = IPOIB_TX_RING_SIZE,
165 .max_recv_wr = IPOIB_RX_RING_SIZE,
169 .sq_sig_type = IB_SIGNAL_ALL_WR,
173 priv->pd = ib_alloc_pd(priv->ca);
174 if (IS_ERR(priv->pd)) {
175 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name);
179 priv->cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev,
180 IPOIB_TX_RING_SIZE + IPOIB_RX_RING_SIZE + 1);
181 if (IS_ERR(priv->cq)) {
182 printk(KERN_WARNING "%s: failed to create CQ\n", ca->name);
186 if (ib_req_notify_cq(priv->cq, IB_CQ_NEXT_COMP))
189 priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE);
190 if (IS_ERR(priv->mr)) {
191 printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name);
195 init_attr.send_cq = priv->cq;
196 init_attr.recv_cq = priv->cq,
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 priv->tx_sge.lkey = priv->mr->lkey;
210 priv->tx_wr.opcode = IB_WR_SEND;
211 priv->tx_wr.sg_list = &priv->tx_sge;
212 priv->tx_wr.num_sge = 1;
213 priv->tx_wr.send_flags = IB_SEND_SIGNALED;
218 ib_dereg_mr(priv->mr);
221 ib_destroy_cq(priv->cq);
224 ib_dealloc_pd(priv->pd);
228 void ipoib_transport_dev_cleanup(struct net_device *dev)
230 struct ipoib_dev_priv *priv = netdev_priv(dev);
233 if (ib_destroy_qp(priv->qp))
234 ipoib_warn(priv, "ib_qp_destroy failed\n");
237 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
240 if (ib_dereg_mr(priv->mr))
241 ipoib_warn(priv, "ib_dereg_mr failed\n");
243 if (ib_destroy_cq(priv->cq))
244 ipoib_warn(priv, "ib_cq_destroy failed\n");
246 if (ib_dealloc_pd(priv->pd))
247 ipoib_warn(priv, "ib_dealloc_pd failed\n");
250 void ipoib_event(struct ib_event_handler *handler,
251 struct ib_event *record)
253 struct ipoib_dev_priv *priv =
254 container_of(handler, struct ipoib_dev_priv, event_handler);
256 if (record->event == IB_EVENT_PORT_ACTIVE ||
257 record->event == IB_EVENT_LID_CHANGE ||
258 record->event == IB_EVENT_SM_CHANGE) {
259 ipoib_dbg(priv, "Port active event\n");
260 schedule_work(&priv->flush_task);