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 34 #include "ipoib.h" 35 #include <linux/ethtool.h> 36 37 int ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid, union ib_gid *mgid, int set_qkey) 38 { 39 struct ib_qp_attr *qp_attr = NULL; 40 int ret; 41 u16 pkey_index; 42 43 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) { 44 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 45 ret = -ENXIO; 46 goto out; 47 } 48 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 49 50 if (set_qkey) { 51 ret = -ENOMEM; 52 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL); 53 if (!qp_attr) 54 goto out; 55 56 /* set correct QKey for QP */ 57 qp_attr->qkey = priv->qkey; 58 ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY); 59 if (ret) { 60 ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret); 61 goto out; 62 } 63 } 64 65 /* attach QP to multicast group */ 66 ret = ib_attach_mcast(priv->qp, mgid, mlid); 67 if (ret) 68 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret); 69 70 out: 71 kfree(qp_attr); 72 return ret; 73 } 74 75 int ipoib_init_qp(struct ipoib_dev_priv *priv) 76 { 77 int ret; 78 struct ib_qp_attr qp_attr; 79 int attr_mask; 80 81 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) 82 return -1; 83 84 qp_attr.qp_state = IB_QPS_INIT; 85 qp_attr.qkey = 0; 86 qp_attr.port_num = priv->port; 87 qp_attr.pkey_index = priv->pkey_index; 88 attr_mask = 89 IB_QP_QKEY | 90 IB_QP_PORT | 91 IB_QP_PKEY_INDEX | 92 IB_QP_STATE; 93 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 94 if (ret) { 95 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret); 96 goto out_fail; 97 } 98 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); 103 if (ret) { 104 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret); 105 goto out_fail; 106 } 107 108 qp_attr.qp_state = IB_QPS_RTS; 109 qp_attr.sq_psn = 0; 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); 113 if (ret) { 114 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret); 115 goto out_fail; 116 } 117 118 return 0; 119 120 out_fail: 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"); 124 125 return ret; 126 } 127 128 int ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca) 129 { 130 struct ib_qp_init_attr init_attr = { 131 .cap = { 132 .max_send_wr = ipoib_sendq_size, 133 .max_recv_wr = ipoib_recvq_size, 134 .max_send_sge = 1, 135 .max_recv_sge = IPOIB_UD_RX_SG 136 }, 137 .sq_sig_type = IB_SIGNAL_ALL_WR, 138 .qp_type = IB_QPT_UD 139 }; 140 141 int ret, size; 142 int i; 143 /* XXX struct ethtool_coalesce *coal; */ 144 145 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); 148 return -ENODEV; 149 } 150 151 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); 154 goto out_free_pd; 155 } 156 157 size = ipoib_recvq_size + 1; 158 ret = ipoib_cm_dev_init(priv); 159 if (!ret) { 160 size += ipoib_sendq_size; 161 if (ipoib_cm_has_srq(priv)) 162 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */ 163 else 164 size += ipoib_recvq_size * ipoib_max_conn_qp; 165 } 166 167 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); 170 goto out_free_mr; 171 } 172 173 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; 178 } 179 180 if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP)) 181 goto out_free_send_cq; 182 183 #if 0 184 /* XXX */ 185 coal = kzalloc(sizeof *coal, GFP_KERNEL); 186 if (coal) { 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); 192 kfree(coal); 193 } 194 #endif 195 196 init_attr.send_cq = priv->send_cq; 197 init_attr.recv_cq = priv->recv_cq; 198 199 if (priv->hca_caps & IB_DEVICE_UD_TSO) 200 init_attr.create_flags |= IB_QP_CREATE_IPOIB_UD_LSO; 201 202 if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK) 203 init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; 204 205 init_attr.cap.max_send_sge = IPOIB_UD_TX_SG; 206 207 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; 211 } 212 213 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; 216 217 for (i = 0; i < IPOIB_MAX_TX_SG; ++i) 218 priv->tx_sge[i].lkey = priv->mr->lkey; 219 220 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; 223 224 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; 228 229 return 0; 230 231 out_free_send_cq: 232 ib_destroy_cq(priv->send_cq); 233 234 out_free_recv_cq: 235 ib_destroy_cq(priv->recv_cq); 236 237 out_free_mr: 238 ib_dereg_mr(priv->mr); 239 ipoib_cm_dev_cleanup(priv); 240 241 out_free_pd: 242 ib_dealloc_pd(priv->pd); 243 return -ENODEV; 244 } 245 246 void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv) 247 { 248 249 if (priv->qp) { 250 if (ib_destroy_qp(priv->qp)) 251 ipoib_warn(priv, "ib_qp_destroy failed\n"); 252 253 priv->qp = NULL; 254 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 255 } 256 257 if (ib_destroy_cq(priv->send_cq)) 258 ipoib_warn(priv, "ib_cq_destroy (send) failed\n"); 259 260 if (ib_destroy_cq(priv->recv_cq)) 261 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n"); 262 263 ipoib_cm_dev_cleanup(priv); 264 265 if (ib_dereg_mr(priv->mr)) 266 ipoib_warn(priv, "ib_dereg_mr failed\n"); 267 268 if (ib_dealloc_pd(priv->pd)) 269 ipoib_warn(priv, "ib_dealloc_pd failed\n"); 270 } 271 272 void ipoib_event(struct ib_event_handler *handler, 273 struct ib_event *record) 274 { 275 struct ipoib_dev_priv *priv = 276 container_of(handler, struct ipoib_dev_priv, event_handler); 277 278 if (record->element.port_num != priv->port) 279 return; 280 281 ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event, 282 record->device->name, record->element.port_num); 283 284 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); 293 } 294 } 295