1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 4 * 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: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 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. 23 * 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 31 * SOFTWARE. 32 * 33 * $Id: ipoib_verbs.c 1349 2004-12-16 21:09:43Z roland $ 34 */ 35 36 #include "ipoib.h" 37 38 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid) 39 { 40 struct ipoib_dev_priv *priv = netdev_priv(dev); 41 struct ib_qp_attr *qp_attr; 42 int ret; 43 u16 pkey_index; 44 45 ret = -ENOMEM; 46 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL); 47 if (!qp_attr) 48 goto out; 49 50 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) { 51 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 52 ret = -ENXIO; 53 goto out; 54 } 55 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 56 57 /* set correct QKey for QP */ 58 qp_attr->qkey = priv->qkey; 59 ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY); 60 if (ret) { 61 ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret); 62 goto out; 63 } 64 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); 69 if (ret) 70 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret); 71 72 out: 73 kfree(qp_attr); 74 return ret; 75 } 76 77 int ipoib_mcast_detach(struct net_device *dev, u16 mlid, union ib_gid *mgid) 78 { 79 struct ipoib_dev_priv *priv = netdev_priv(dev); 80 int ret; 81 82 mutex_lock(&priv->mcast_mutex); 83 ret = ib_detach_mcast(priv->qp, mgid, mlid); 84 mutex_unlock(&priv->mcast_mutex); 85 if (ret) 86 ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret); 87 88 return ret; 89 } 90 91 int ipoib_init_qp(struct net_device *dev) 92 { 93 struct ipoib_dev_priv *priv = netdev_priv(dev); 94 int ret; 95 struct ib_qp_attr qp_attr; 96 int attr_mask; 97 98 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) 99 return -1; 100 101 qp_attr.qp_state = IB_QPS_INIT; 102 qp_attr.qkey = 0; 103 qp_attr.port_num = priv->port; 104 qp_attr.pkey_index = priv->pkey_index; 105 attr_mask = 106 IB_QP_QKEY | 107 IB_QP_PORT | 108 IB_QP_PKEY_INDEX | 109 IB_QP_STATE; 110 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 111 if (ret) { 112 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret); 113 goto out_fail; 114 } 115 116 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); 120 if (ret) { 121 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret); 122 goto out_fail; 123 } 124 125 qp_attr.qp_state = IB_QPS_RTS; 126 qp_attr.sq_psn = 0; 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); 130 if (ret) { 131 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret); 132 goto out_fail; 133 } 134 135 return 0; 136 137 out_fail: 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"); 141 142 return ret; 143 } 144 145 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca) 146 { 147 struct ipoib_dev_priv *priv = netdev_priv(dev); 148 struct ib_qp_init_attr init_attr = { 149 .cap = { 150 .max_send_wr = ipoib_sendq_size, 151 .max_recv_wr = ipoib_recvq_size, 152 .max_send_sge = 1, 153 .max_recv_sge = 1 154 }, 155 .sq_sig_type = IB_SIGNAL_ALL_WR, 156 .qp_type = IB_QPT_UD 157 }; 158 159 int ret, size; 160 161 priv->pd = ib_alloc_pd(priv->ca); 162 if (IS_ERR(priv->pd)) { 163 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name); 164 return -ENODEV; 165 } 166 167 priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE); 168 if (IS_ERR(priv->mr)) { 169 printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name); 170 goto out_free_pd; 171 } 172 173 size = ipoib_sendq_size + ipoib_recvq_size + 1; 174 ret = ipoib_cm_dev_init(dev); 175 if (!ret) 176 size += ipoib_recvq_size + 1 /* 1 extra for rx_drain_qp */; 177 178 priv->cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0); 179 if (IS_ERR(priv->cq)) { 180 printk(KERN_WARNING "%s: failed to create CQ\n", ca->name); 181 goto out_free_mr; 182 } 183 184 if (ib_req_notify_cq(priv->cq, IB_CQ_NEXT_COMP)) 185 goto out_free_cq; 186 187 init_attr.send_cq = priv->cq; 188 init_attr.recv_cq = priv->cq; 189 190 priv->qp = ib_create_qp(priv->pd, &init_attr); 191 if (IS_ERR(priv->qp)) { 192 printk(KERN_WARNING "%s: failed to create QP\n", ca->name); 193 goto out_free_cq; 194 } 195 196 priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff; 197 priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff; 198 priv->dev->dev_addr[3] = (priv->qp->qp_num ) & 0xff; 199 200 priv->tx_sge.lkey = priv->mr->lkey; 201 202 priv->tx_wr.opcode = IB_WR_SEND; 203 priv->tx_wr.sg_list = &priv->tx_sge; 204 priv->tx_wr.num_sge = 1; 205 priv->tx_wr.send_flags = IB_SEND_SIGNALED; 206 207 return 0; 208 209 out_free_cq: 210 ib_destroy_cq(priv->cq); 211 212 out_free_mr: 213 ib_dereg_mr(priv->mr); 214 ipoib_cm_dev_cleanup(dev); 215 216 out_free_pd: 217 ib_dealloc_pd(priv->pd); 218 return -ENODEV; 219 } 220 221 void ipoib_transport_dev_cleanup(struct net_device *dev) 222 { 223 struct ipoib_dev_priv *priv = netdev_priv(dev); 224 225 if (priv->qp) { 226 if (ib_destroy_qp(priv->qp)) 227 ipoib_warn(priv, "ib_qp_destroy failed\n"); 228 229 priv->qp = NULL; 230 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 231 } 232 233 if (ib_destroy_cq(priv->cq)) 234 ipoib_warn(priv, "ib_cq_destroy failed\n"); 235 236 ipoib_cm_dev_cleanup(dev); 237 238 if (ib_dereg_mr(priv->mr)) 239 ipoib_warn(priv, "ib_dereg_mr failed\n"); 240 241 if (ib_dealloc_pd(priv->pd)) 242 ipoib_warn(priv, "ib_dealloc_pd failed\n"); 243 } 244 245 void ipoib_event(struct ib_event_handler *handler, 246 struct ib_event *record) 247 { 248 struct ipoib_dev_priv *priv = 249 container_of(handler, struct ipoib_dev_priv, event_handler); 250 251 if (record->element.port_num != priv->port) 252 return; 253 254 if (record->event == IB_EVENT_PORT_ERR || 255 record->event == IB_EVENT_PORT_ACTIVE || 256 record->event == IB_EVENT_LID_CHANGE || 257 record->event == IB_EVENT_SM_CHANGE || 258 record->event == IB_EVENT_CLIENT_REREGISTER) { 259 ipoib_dbg(priv, "Port state change event\n"); 260 queue_work(ipoib_workqueue, &priv->flush_task); 261 } else if (record->event == IB_EVENT_PKEY_CHANGE) { 262 ipoib_dbg(priv, "P_Key change event on port:%d\n", priv->port); 263 queue_work(ipoib_workqueue, &priv->pkey_event_task); 264 } 265 } 266