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
35 #include <linux/ethtool.h>
37 int ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid, union ib_gid *mgid, int set_qkey)
39 struct ib_qp_attr *qp_attr = NULL;
43 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) {
44 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
48 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
52 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL);
56 /* set correct QKey for QP */
57 qp_attr->qkey = priv->qkey;
58 ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY);
60 ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret);
65 /* attach QP to multicast group */
66 ret = ib_attach_mcast(priv->qp, mgid, mlid);
68 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret);
75 int ipoib_init_qp(struct ipoib_dev_priv *priv)
78 struct ib_qp_attr qp_attr;
81 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags))
84 qp_attr.qp_state = IB_QPS_INIT;
86 qp_attr.port_num = priv->port;
87 qp_attr.pkey_index = priv->pkey_index;
93 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
95 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret);
99 qp_attr.qp_state = IB_QPS_RTR;
100 /* Can't set this in a INIT->RTR transition */
101 attr_mask &= ~IB_QP_PORT;
102 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
104 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret);
108 qp_attr.qp_state = IB_QPS_RTS;
110 attr_mask |= IB_QP_SQ_PSN;
111 attr_mask &= ~IB_QP_PKEY_INDEX;
112 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
114 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret);
121 qp_attr.qp_state = IB_QPS_RESET;
122 if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
123 ipoib_warn(priv, "Failed to modify QP to RESET state\n");
128 int ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca)
130 struct ib_qp_init_attr init_attr = {
132 .max_send_wr = ipoib_sendq_size,
133 .max_recv_wr = ipoib_recvq_size,
135 .max_recv_sge = IPOIB_UD_RX_SG
137 .sq_sig_type = IB_SIGNAL_ALL_WR,
143 /* XXX struct ethtool_coalesce *coal; */
145 priv->pd = ib_alloc_pd(priv->ca);
146 if (IS_ERR(priv->pd)) {
147 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name);
151 priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE);
152 if (IS_ERR(priv->mr)) {
153 printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name);
157 size = ipoib_recvq_size + 1;
158 ret = ipoib_cm_dev_init(priv);
160 size += ipoib_sendq_size;
161 if (ipoib_cm_has_srq(priv))
162 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */
164 size += ipoib_recvq_size * ipoib_max_conn_qp;
167 priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, priv, size, 0);
168 if (IS_ERR(priv->recv_cq)) {
169 printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name);
173 priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL,
174 priv, ipoib_sendq_size, 0);
175 if (IS_ERR(priv->send_cq)) {
176 printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name);
177 goto out_free_recv_cq;
180 if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP))
181 goto out_free_send_cq;
185 coal = kzalloc(sizeof *coal, GFP_KERNEL);
187 coal->rx_coalesce_usecs = 10;
188 coal->tx_coalesce_usecs = 10;
189 coal->rx_max_coalesced_frames = 16;
190 coal->tx_max_coalesced_frames = 16;
191 dev->ethtool_ops->set_coalesce(dev, coal);
196 init_attr.send_cq = priv->send_cq;
197 init_attr.recv_cq = priv->recv_cq;
199 if (priv->hca_caps & IB_DEVICE_UD_TSO)
200 init_attr.create_flags |= IB_QP_CREATE_IPOIB_UD_LSO;
202 if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK)
203 init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
205 init_attr.cap.max_send_sge = IPOIB_UD_TX_SG;
207 priv->qp = ib_create_qp(priv->pd, &init_attr);
208 if (IS_ERR(priv->qp)) {
209 printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
210 goto out_free_send_cq;
213 IF_LLADDR(priv->dev)[1] = (priv->qp->qp_num >> 16) & 0xff;
214 IF_LLADDR(priv->dev)[2] = (priv->qp->qp_num >> 8) & 0xff;
215 IF_LLADDR(priv->dev)[3] = (priv->qp->qp_num ) & 0xff;
217 for (i = 0; i < IPOIB_MAX_TX_SG; ++i)
218 priv->tx_sge[i].lkey = priv->mr->lkey;
220 priv->tx_wr.opcode = IB_WR_SEND;
221 priv->tx_wr.sg_list = priv->tx_sge;
222 priv->tx_wr.send_flags = IB_SEND_SIGNALED;
224 for (i = 0; i < IPOIB_UD_RX_SG; ++i)
225 priv->rx_sge[i].lkey = priv->mr->lkey;
226 priv->rx_wr.next = NULL;
227 priv->rx_wr.sg_list = priv->rx_sge;
232 ib_destroy_cq(priv->send_cq);
235 ib_destroy_cq(priv->recv_cq);
238 ib_dereg_mr(priv->mr);
239 ipoib_cm_dev_cleanup(priv);
242 ib_dealloc_pd(priv->pd);
246 void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv)
250 if (ib_destroy_qp(priv->qp))
251 ipoib_warn(priv, "ib_qp_destroy failed\n");
254 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
257 if (ib_destroy_cq(priv->send_cq))
258 ipoib_warn(priv, "ib_cq_destroy (send) failed\n");
260 if (ib_destroy_cq(priv->recv_cq))
261 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n");
263 ipoib_cm_dev_cleanup(priv);
265 if (ib_dereg_mr(priv->mr))
266 ipoib_warn(priv, "ib_dereg_mr failed\n");
268 if (ib_dealloc_pd(priv->pd))
269 ipoib_warn(priv, "ib_dealloc_pd failed\n");
272 void ipoib_event(struct ib_event_handler *handler,
273 struct ib_event *record)
275 struct ipoib_dev_priv *priv =
276 container_of(handler, struct ipoib_dev_priv, event_handler);
278 if (record->element.port_num != priv->port)
281 ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event,
282 record->device->name, record->element.port_num);
284 if (record->event == IB_EVENT_SM_CHANGE ||
285 record->event == IB_EVENT_CLIENT_REREGISTER) {
286 queue_work(ipoib_workqueue, &priv->flush_light);
287 } else if (record->event == IB_EVENT_PORT_ERR ||
288 record->event == IB_EVENT_PORT_ACTIVE ||
289 record->event == IB_EVENT_LID_CHANGE) {
290 queue_work(ipoib_workqueue, &priv->flush_normal);
291 } else if (record->event == IB_EVENT_PKEY_CHANGE) {
292 queue_work(ipoib_workqueue, &priv->flush_heavy);