1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 6 * 7 * This software is available to you under a choice of one of two 8 * licenses. You may choose to be licensed under the terms of the GNU 9 * General Public License (GPL) Version 2, available from the file 10 * COPYING in the main directory of this source tree, or the 11 * OpenIB.org BSD license below: 12 * 13 * Redistribution and use in source and binary forms, with or 14 * without modification, are permitted provided that the following 15 * conditions are met: 16 * 17 * - Redistributions of source code must retain the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer. 20 * 21 * - Redistributions in binary form must reproduce the above 22 * copyright notice, this list of conditions and the following 23 * disclaimer in the documentation and/or other materials 24 * provided with the distribution. 25 * 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 33 * SOFTWARE. 34 */ 35 36 #include "ipoib.h" 37 38 int ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid, union ib_gid *mgid, int set_qkey) 39 { 40 struct ib_qp_attr *qp_attr = NULL; 41 int ret; 42 u16 pkey_index; 43 44 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) { 45 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 46 ret = -ENXIO; 47 goto out; 48 } 49 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 50 51 if (set_qkey) { 52 ret = -ENOMEM; 53 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL); 54 if (!qp_attr) 55 goto out; 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 66 /* attach QP to multicast group */ 67 ret = ib_attach_mcast(priv->qp, mgid, mlid); 68 if (ret) 69 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret); 70 71 out: 72 kfree(qp_attr); 73 return ret; 74 } 75 76 int ipoib_init_qp(struct ipoib_dev_priv *priv) 77 { 78 int ret; 79 struct ib_qp_attr qp_attr; 80 int attr_mask; 81 82 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) 83 return -1; 84 85 qp_attr.qp_state = IB_QPS_INIT; 86 qp_attr.qkey = 0; 87 qp_attr.port_num = priv->port; 88 qp_attr.pkey_index = priv->pkey_index; 89 attr_mask = 90 IB_QP_QKEY | 91 IB_QP_PORT | 92 IB_QP_PKEY_INDEX | 93 IB_QP_STATE; 94 95 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 96 if (ret) { 97 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret); 98 goto out_fail; 99 } 100 101 qp_attr.qp_state = IB_QPS_RTR; 102 /* Can't set this in a INIT->RTR transition */ 103 attr_mask &= ~IB_QP_PORT; 104 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 105 if (ret) { 106 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret); 107 goto out_fail; 108 } 109 110 qp_attr.qp_state = IB_QPS_RTS; 111 qp_attr.sq_psn = 0; 112 attr_mask |= IB_QP_SQ_PSN; 113 attr_mask &= ~IB_QP_PKEY_INDEX; 114 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 115 if (ret) { 116 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret); 117 goto out_fail; 118 } 119 120 return 0; 121 122 out_fail: 123 qp_attr.qp_state = IB_QPS_RESET; 124 if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) 125 ipoib_warn(priv, "Failed to modify QP to RESET state\n"); 126 127 return ret; 128 } 129 130 int ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca) 131 { 132 struct ib_qp_init_attr init_attr = { 133 .cap = { 134 .max_send_wr = ipoib_sendq_size, 135 .max_recv_wr = ipoib_recvq_size, 136 .max_send_sge = 1, 137 .max_recv_sge = IPOIB_UD_RX_SG 138 }, 139 .sq_sig_type = IB_SIGNAL_ALL_WR, 140 .qp_type = IB_QPT_UD 141 }; 142 struct ib_cq_init_attr cq_attr = {}; 143 144 int ret, size; 145 int i; 146 /* XXX struct ethtool_coalesce *coal; */ 147 148 priv->pd = ib_alloc_pd(priv->ca, 0); 149 if (IS_ERR(priv->pd)) { 150 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name); 151 return -ENODEV; 152 } 153 154 size = ipoib_recvq_size + 1; 155 ret = ipoib_cm_dev_init(priv); 156 if (!ret) { 157 size += ipoib_sendq_size; 158 if (ipoib_cm_has_srq(priv)) 159 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */ 160 else 161 size += ipoib_recvq_size * ipoib_max_conn_qp; 162 } 163 164 cq_attr.cqe = size; 165 priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, priv, &cq_attr); 166 if (IS_ERR(priv->recv_cq)) { 167 printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name); 168 goto out_free_mr; 169 } 170 171 cq_attr.cqe = ipoib_sendq_size; 172 priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL, 173 priv, &cq_attr); 174 if (IS_ERR(priv->send_cq)) { 175 printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name); 176 goto out_free_recv_cq; 177 } 178 179 if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP)) 180 goto out_free_send_cq; 181 182 #if 0 183 /* XXX */ 184 coal = kzalloc(sizeof *coal, GFP_KERNEL); 185 if (coal) { 186 coal->rx_coalesce_usecs = 10; 187 coal->tx_coalesce_usecs = 10; 188 coal->rx_max_coalesced_frames = 16; 189 coal->tx_max_coalesced_frames = 16; 190 dev->ethtool_ops->set_coalesce(dev, coal); 191 kfree(coal); 192 } 193 #endif 194 195 init_attr.send_cq = priv->send_cq; 196 init_attr.recv_cq = priv->recv_cq; 197 198 if (priv->hca_caps & IB_DEVICE_UD_TSO) 199 init_attr.create_flags |= IB_QP_CREATE_IPOIB_UD_LSO; 200 201 if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK) 202 init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; 203 204 init_attr.cap.max_send_sge = IPOIB_UD_TX_SG; 205 206 priv->qp = ib_create_qp(priv->pd, &init_attr); 207 if (IS_ERR(priv->qp)) { 208 printk(KERN_WARNING "%s: failed to create QP\n", ca->name); 209 goto out_free_send_cq; 210 } 211 212 IF_LLADDR(priv->dev)[1] = (priv->qp->qp_num >> 16) & 0xff; 213 IF_LLADDR(priv->dev)[2] = (priv->qp->qp_num >> 8) & 0xff; 214 IF_LLADDR(priv->dev)[3] = (priv->qp->qp_num ) & 0xff; 215 216 for (i = 0; i < IPOIB_MAX_TX_SG; ++i) 217 priv->tx_sge[i].lkey = priv->pd->local_dma_lkey; 218 219 priv->tx_wr.wr.opcode = IB_WR_SEND; 220 priv->tx_wr.wr.sg_list = priv->tx_sge; 221 priv->tx_wr.wr.send_flags = IB_SEND_SIGNALED; 222 223 for (i = 0; i < IPOIB_UD_RX_SG; ++i) 224 priv->rx_sge[i].lkey = priv->pd->local_dma_lkey; 225 priv->rx_wr.next = NULL; 226 priv->rx_wr.sg_list = priv->rx_sge; 227 228 return 0; 229 230 out_free_send_cq: 231 ib_destroy_cq(priv->send_cq); 232 233 out_free_recv_cq: 234 ib_destroy_cq(priv->recv_cq); 235 236 out_free_mr: 237 ipoib_cm_dev_cleanup(priv); 238 239 ib_dealloc_pd(priv->pd); 240 return -ENODEV; 241 } 242 243 void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv) 244 { 245 246 if (priv->qp) { 247 if (ib_destroy_qp(priv->qp)) 248 ipoib_warn(priv, "ib_qp_destroy failed\n"); 249 250 priv->qp = NULL; 251 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 252 } 253 254 if (ib_destroy_cq(priv->send_cq)) 255 ipoib_warn(priv, "ib_cq_destroy (send) failed\n"); 256 257 if (ib_destroy_cq(priv->recv_cq)) 258 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n"); 259 260 ipoib_cm_dev_cleanup(priv); 261 262 ib_dealloc_pd(priv->pd); 263 } 264 265 void ipoib_event(struct ib_event_handler *handler, 266 struct ib_event *record) 267 { 268 struct ipoib_dev_priv *priv = 269 container_of(handler, struct ipoib_dev_priv, event_handler); 270 271 if (record->element.port_num != priv->port) 272 return; 273 274 ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event, 275 record->device->name, record->element.port_num); 276 277 if (record->event == IB_EVENT_SM_CHANGE || 278 record->event == IB_EVENT_CLIENT_REREGISTER) { 279 queue_work(ipoib_workqueue, &priv->flush_light); 280 } else if (record->event == IB_EVENT_PORT_ERR || 281 record->event == IB_EVENT_PORT_ACTIVE || 282 record->event == IB_EVENT_LID_CHANGE) { 283 queue_work(ipoib_workqueue, &priv->flush_normal); 284 } else if (record->event == IB_EVENT_PKEY_CHANGE) { 285 queue_work(ipoib_workqueue, &priv->flush_heavy); 286 } 287 } 288