1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2007, 2008 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 <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/slab.h> 37 #include <linux/errno.h> 38 #include <linux/netdevice.h> 39 #include <linux/inetdevice.h> 40 #include <linux/rtnetlink.h> 41 #include <linux/if_vlan.h> 42 #include <linux/sched/mm.h> 43 #include <linux/sched/task.h> 44 45 #include <net/ipv6.h> 46 #include <net/addrconf.h> 47 #include <net/devlink.h> 48 49 #include <rdma/ib_smi.h> 50 #include <rdma/ib_user_verbs.h> 51 #include <rdma/ib_addr.h> 52 #include <rdma/ib_cache.h> 53 54 #include <net/bonding.h> 55 56 #include <linux/mlx4/driver.h> 57 #include <linux/mlx4/cmd.h> 58 #include <linux/mlx4/qp.h> 59 60 #include "mlx4_ib.h" 61 #include <rdma/mlx4-abi.h> 62 63 #define DRV_NAME MLX4_IB_DRV_NAME 64 #define DRV_VERSION "4.0-0" 65 66 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF 67 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF 68 #define MLX4_IB_CARD_REV_A0 0xA0 69 70 MODULE_AUTHOR("Roland Dreier"); 71 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 72 MODULE_LICENSE("Dual BSD/GPL"); 73 74 int mlx4_ib_sm_guid_assign = 0; 75 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 76 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)"); 77 78 static const char mlx4_ib_version[] = 79 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 80 DRV_VERSION "\n"; 81 82 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 83 static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device, 84 u8 port_num); 85 86 static struct workqueue_struct *wq; 87 88 static void init_query_mad(struct ib_smp *mad) 89 { 90 mad->base_version = 1; 91 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 92 mad->class_version = 1; 93 mad->method = IB_MGMT_METHOD_GET; 94 } 95 96 static int check_flow_steering_support(struct mlx4_dev *dev) 97 { 98 int eth_num_ports = 0; 99 int ib_num_ports = 0; 100 101 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; 102 103 if (dmfs) { 104 int i; 105 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 106 eth_num_ports++; 107 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 108 ib_num_ports++; 109 dmfs &= (!ib_num_ports || 110 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && 111 (!eth_num_ports || 112 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); 113 if (ib_num_ports && mlx4_is_mfunc(dev)) { 114 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); 115 dmfs = 0; 116 } 117 } 118 return dmfs; 119 } 120 121 static int num_ib_ports(struct mlx4_dev *dev) 122 { 123 int ib_ports = 0; 124 int i; 125 126 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 127 ib_ports++; 128 129 return ib_ports; 130 } 131 132 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num) 133 { 134 struct mlx4_ib_dev *ibdev = to_mdev(device); 135 struct net_device *dev; 136 137 rcu_read_lock(); 138 dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num); 139 140 if (dev) { 141 if (mlx4_is_bonded(ibdev->dev)) { 142 struct net_device *upper = NULL; 143 144 upper = netdev_master_upper_dev_get_rcu(dev); 145 if (upper) { 146 struct net_device *active; 147 148 active = bond_option_active_slave_get_rcu(netdev_priv(upper)); 149 if (active) 150 dev = active; 151 } 152 } 153 } 154 if (dev) 155 dev_hold(dev); 156 157 rcu_read_unlock(); 158 return dev; 159 } 160 161 static int mlx4_ib_update_gids_v1(struct gid_entry *gids, 162 struct mlx4_ib_dev *ibdev, 163 u8 port_num) 164 { 165 struct mlx4_cmd_mailbox *mailbox; 166 int err; 167 struct mlx4_dev *dev = ibdev->dev; 168 int i; 169 union ib_gid *gid_tbl; 170 171 mailbox = mlx4_alloc_cmd_mailbox(dev); 172 if (IS_ERR(mailbox)) 173 return -ENOMEM; 174 175 gid_tbl = mailbox->buf; 176 177 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 178 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid)); 179 180 err = mlx4_cmd(dev, mailbox->dma, 181 MLX4_SET_PORT_GID_TABLE << 8 | port_num, 182 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 183 MLX4_CMD_WRAPPED); 184 if (mlx4_is_bonded(dev)) 185 err += mlx4_cmd(dev, mailbox->dma, 186 MLX4_SET_PORT_GID_TABLE << 8 | 2, 187 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 188 MLX4_CMD_WRAPPED); 189 190 mlx4_free_cmd_mailbox(dev, mailbox); 191 return err; 192 } 193 194 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids, 195 struct mlx4_ib_dev *ibdev, 196 u8 port_num) 197 { 198 struct mlx4_cmd_mailbox *mailbox; 199 int err; 200 struct mlx4_dev *dev = ibdev->dev; 201 int i; 202 struct { 203 union ib_gid gid; 204 __be32 rsrvd1[2]; 205 __be16 rsrvd2; 206 u8 type; 207 u8 version; 208 __be32 rsrvd3; 209 } *gid_tbl; 210 211 mailbox = mlx4_alloc_cmd_mailbox(dev); 212 if (IS_ERR(mailbox)) 213 return -ENOMEM; 214 215 gid_tbl = mailbox->buf; 216 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 217 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid)); 218 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { 219 gid_tbl[i].version = 2; 220 if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid)) 221 gid_tbl[i].type = 1; 222 } 223 } 224 225 err = mlx4_cmd(dev, mailbox->dma, 226 MLX4_SET_PORT_ROCE_ADDR << 8 | port_num, 227 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 228 MLX4_CMD_WRAPPED); 229 if (mlx4_is_bonded(dev)) 230 err += mlx4_cmd(dev, mailbox->dma, 231 MLX4_SET_PORT_ROCE_ADDR << 8 | 2, 232 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 233 MLX4_CMD_WRAPPED); 234 235 mlx4_free_cmd_mailbox(dev, mailbox); 236 return err; 237 } 238 239 static int mlx4_ib_update_gids(struct gid_entry *gids, 240 struct mlx4_ib_dev *ibdev, 241 u8 port_num) 242 { 243 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 244 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num); 245 246 return mlx4_ib_update_gids_v1(gids, ibdev, port_num); 247 } 248 249 static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context) 250 { 251 struct mlx4_ib_dev *ibdev = to_mdev(attr->device); 252 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 253 struct mlx4_port_gid_table *port_gid_table; 254 int free = -1, found = -1; 255 int ret = 0; 256 int hw_update = 0; 257 int i; 258 struct gid_entry *gids = NULL; 259 260 if (!rdma_cap_roce_gid_table(attr->device, attr->port_num)) 261 return -EINVAL; 262 263 if (attr->port_num > MLX4_MAX_PORTS) 264 return -EINVAL; 265 266 if (!context) 267 return -EINVAL; 268 269 port_gid_table = &iboe->gids[attr->port_num - 1]; 270 spin_lock_bh(&iboe->lock); 271 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 272 if (!memcmp(&port_gid_table->gids[i].gid, 273 &attr->gid, sizeof(attr->gid)) && 274 port_gid_table->gids[i].gid_type == attr->gid_type) { 275 found = i; 276 break; 277 } 278 if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid)) 279 free = i; /* HW has space */ 280 } 281 282 if (found < 0) { 283 if (free < 0) { 284 ret = -ENOSPC; 285 } else { 286 port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC); 287 if (!port_gid_table->gids[free].ctx) { 288 ret = -ENOMEM; 289 } else { 290 *context = port_gid_table->gids[free].ctx; 291 memcpy(&port_gid_table->gids[free].gid, 292 &attr->gid, sizeof(attr->gid)); 293 port_gid_table->gids[free].gid_type = attr->gid_type; 294 port_gid_table->gids[free].ctx->real_index = free; 295 port_gid_table->gids[free].ctx->refcount = 1; 296 hw_update = 1; 297 } 298 } 299 } else { 300 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx; 301 *context = ctx; 302 ctx->refcount++; 303 } 304 if (!ret && hw_update) { 305 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids), 306 GFP_ATOMIC); 307 if (!gids) { 308 ret = -ENOMEM; 309 } else { 310 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 311 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid)); 312 gids[i].gid_type = port_gid_table->gids[i].gid_type; 313 } 314 } 315 } 316 spin_unlock_bh(&iboe->lock); 317 318 if (!ret && hw_update) { 319 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num); 320 kfree(gids); 321 } 322 323 return ret; 324 } 325 326 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context) 327 { 328 struct gid_cache_context *ctx = *context; 329 struct mlx4_ib_dev *ibdev = to_mdev(attr->device); 330 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 331 struct mlx4_port_gid_table *port_gid_table; 332 int ret = 0; 333 int hw_update = 0; 334 struct gid_entry *gids = NULL; 335 336 if (!rdma_cap_roce_gid_table(attr->device, attr->port_num)) 337 return -EINVAL; 338 339 if (attr->port_num > MLX4_MAX_PORTS) 340 return -EINVAL; 341 342 port_gid_table = &iboe->gids[attr->port_num - 1]; 343 spin_lock_bh(&iboe->lock); 344 if (ctx) { 345 ctx->refcount--; 346 if (!ctx->refcount) { 347 unsigned int real_index = ctx->real_index; 348 349 memset(&port_gid_table->gids[real_index].gid, 0, 350 sizeof(port_gid_table->gids[real_index].gid)); 351 kfree(port_gid_table->gids[real_index].ctx); 352 port_gid_table->gids[real_index].ctx = NULL; 353 hw_update = 1; 354 } 355 } 356 if (!ret && hw_update) { 357 int i; 358 359 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids), 360 GFP_ATOMIC); 361 if (!gids) { 362 ret = -ENOMEM; 363 } else { 364 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 365 memcpy(&gids[i].gid, 366 &port_gid_table->gids[i].gid, 367 sizeof(union ib_gid)); 368 gids[i].gid_type = 369 port_gid_table->gids[i].gid_type; 370 } 371 } 372 } 373 spin_unlock_bh(&iboe->lock); 374 375 if (!ret && hw_update) { 376 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num); 377 kfree(gids); 378 } 379 return ret; 380 } 381 382 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev, 383 const struct ib_gid_attr *attr) 384 { 385 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 386 struct gid_cache_context *ctx = NULL; 387 struct mlx4_port_gid_table *port_gid_table; 388 int real_index = -EINVAL; 389 int i; 390 unsigned long flags; 391 u8 port_num = attr->port_num; 392 393 if (port_num > MLX4_MAX_PORTS) 394 return -EINVAL; 395 396 if (mlx4_is_bonded(ibdev->dev)) 397 port_num = 1; 398 399 if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num)) 400 return attr->index; 401 402 spin_lock_irqsave(&iboe->lock, flags); 403 port_gid_table = &iboe->gids[port_num - 1]; 404 405 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 406 if (!memcmp(&port_gid_table->gids[i].gid, 407 &attr->gid, sizeof(attr->gid)) && 408 attr->gid_type == port_gid_table->gids[i].gid_type) { 409 ctx = port_gid_table->gids[i].ctx; 410 break; 411 } 412 if (ctx) 413 real_index = ctx->real_index; 414 spin_unlock_irqrestore(&iboe->lock, flags); 415 return real_index; 416 } 417 418 #define field_avail(type, fld, sz) (offsetof(type, fld) + \ 419 sizeof(((type *)0)->fld) <= (sz)) 420 421 static int mlx4_ib_query_device(struct ib_device *ibdev, 422 struct ib_device_attr *props, 423 struct ib_udata *uhw) 424 { 425 struct mlx4_ib_dev *dev = to_mdev(ibdev); 426 struct ib_smp *in_mad = NULL; 427 struct ib_smp *out_mad = NULL; 428 int err; 429 int have_ib_ports; 430 struct mlx4_uverbs_ex_query_device cmd; 431 struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0}; 432 struct mlx4_clock_params clock_params; 433 434 if (uhw->inlen) { 435 if (uhw->inlen < sizeof(cmd)) 436 return -EINVAL; 437 438 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd)); 439 if (err) 440 return err; 441 442 if (cmd.comp_mask) 443 return -EINVAL; 444 445 if (cmd.reserved) 446 return -EINVAL; 447 } 448 449 resp.response_length = offsetof(typeof(resp), response_length) + 450 sizeof(resp.response_length); 451 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 452 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 453 err = -ENOMEM; 454 if (!in_mad || !out_mad) 455 goto out; 456 457 init_query_mad(in_mad); 458 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 459 460 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 461 1, NULL, NULL, in_mad, out_mad); 462 if (err) 463 goto out; 464 465 memset(props, 0, sizeof *props); 466 467 have_ib_ports = num_ib_ports(dev->dev); 468 469 props->fw_ver = dev->dev->caps.fw_ver; 470 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 471 IB_DEVICE_PORT_ACTIVE_EVENT | 472 IB_DEVICE_SYS_IMAGE_GUID | 473 IB_DEVICE_RC_RNR_NAK_GEN | 474 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 475 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 476 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 477 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 478 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 479 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports) 480 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 481 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 482 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 483 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 484 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 485 if (dev->dev->caps.max_gso_sz && 486 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) && 487 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)) 488 props->device_cap_flags |= IB_DEVICE_UD_TSO; 489 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 490 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 491 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 492 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 493 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 494 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 495 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 496 props->device_cap_flags |= IB_DEVICE_XRC; 497 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) 498 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; 499 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 500 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) 501 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 502 else 503 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; 504 } 505 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 506 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 507 508 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; 509 510 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 511 0xffffff; 512 props->vendor_part_id = dev->dev->persist->pdev->device; 513 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 514 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 515 516 props->max_mr_size = ~0ull; 517 props->page_size_cap = dev->dev->caps.page_size_cap; 518 props->max_qp = dev->dev->quotas.qp; 519 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 520 props->max_send_sge = 521 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg); 522 props->max_recv_sge = 523 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg); 524 props->max_sge_rd = MLX4_MAX_SGE_RD; 525 props->max_cq = dev->dev->quotas.cq; 526 props->max_cqe = dev->dev->caps.max_cqes; 527 props->max_mr = dev->dev->quotas.mpt; 528 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 529 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 530 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 531 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 532 props->max_srq = dev->dev->quotas.srq; 533 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 534 props->max_srq_sge = dev->dev->caps.max_srq_sge; 535 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 536 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 537 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 538 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 539 props->masked_atomic_cap = props->atomic_cap; 540 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 541 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 542 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 543 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 544 props->max_mcast_grp; 545 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 546 props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL; 547 props->timestamp_mask = 0xFFFFFFFFFFFFULL; 548 props->max_ah = INT_MAX; 549 550 if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET || 551 mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) { 552 if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) { 553 props->rss_caps.max_rwq_indirection_tables = 554 props->max_qp; 555 props->rss_caps.max_rwq_indirection_table_size = 556 dev->dev->caps.max_rss_tbl_sz; 557 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET; 558 props->max_wq_type_rq = props->max_qp; 559 } 560 561 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 562 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS; 563 } 564 565 props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT; 566 props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD; 567 568 if (!mlx4_is_slave(dev->dev)) 569 err = mlx4_get_internal_clock_params(dev->dev, &clock_params); 570 571 if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) { 572 resp.response_length += sizeof(resp.hca_core_clock_offset); 573 if (!err && !mlx4_is_slave(dev->dev)) { 574 resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET; 575 resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE; 576 } 577 } 578 579 if (uhw->outlen >= resp.response_length + 580 sizeof(resp.max_inl_recv_sz)) { 581 resp.response_length += sizeof(resp.max_inl_recv_sz); 582 resp.max_inl_recv_sz = dev->dev->caps.max_rq_sg * 583 sizeof(struct mlx4_wqe_data_seg); 584 } 585 586 if (field_avail(typeof(resp), rss_caps, uhw->outlen)) { 587 if (props->rss_caps.supported_qpts) { 588 resp.rss_caps.rx_hash_function = 589 MLX4_IB_RX_HASH_FUNC_TOEPLITZ; 590 591 resp.rss_caps.rx_hash_fields_mask = 592 MLX4_IB_RX_HASH_SRC_IPV4 | 593 MLX4_IB_RX_HASH_DST_IPV4 | 594 MLX4_IB_RX_HASH_SRC_IPV6 | 595 MLX4_IB_RX_HASH_DST_IPV6 | 596 MLX4_IB_RX_HASH_SRC_PORT_TCP | 597 MLX4_IB_RX_HASH_DST_PORT_TCP | 598 MLX4_IB_RX_HASH_SRC_PORT_UDP | 599 MLX4_IB_RX_HASH_DST_PORT_UDP; 600 601 if (dev->dev->caps.tunnel_offload_mode == 602 MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 603 resp.rss_caps.rx_hash_fields_mask |= 604 MLX4_IB_RX_HASH_INNER; 605 } 606 resp.response_length = offsetof(typeof(resp), rss_caps) + 607 sizeof(resp.rss_caps); 608 } 609 610 if (field_avail(typeof(resp), tso_caps, uhw->outlen)) { 611 if (dev->dev->caps.max_gso_sz && 612 ((mlx4_ib_port_link_layer(ibdev, 1) == 613 IB_LINK_LAYER_ETHERNET) || 614 (mlx4_ib_port_link_layer(ibdev, 2) == 615 IB_LINK_LAYER_ETHERNET))) { 616 resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz; 617 resp.tso_caps.supported_qpts |= 618 1 << IB_QPT_RAW_PACKET; 619 } 620 resp.response_length = offsetof(typeof(resp), tso_caps) + 621 sizeof(resp.tso_caps); 622 } 623 624 if (uhw->outlen) { 625 err = ib_copy_to_udata(uhw, &resp, resp.response_length); 626 if (err) 627 goto out; 628 } 629 out: 630 kfree(in_mad); 631 kfree(out_mad); 632 633 return err; 634 } 635 636 static enum rdma_link_layer 637 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 638 { 639 struct mlx4_dev *dev = to_mdev(device)->dev; 640 641 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 642 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 643 } 644 645 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 646 struct ib_port_attr *props, int netw_view) 647 { 648 struct ib_smp *in_mad = NULL; 649 struct ib_smp *out_mad = NULL; 650 int ext_active_speed; 651 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 652 int err = -ENOMEM; 653 654 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 655 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 656 if (!in_mad || !out_mad) 657 goto out; 658 659 init_query_mad(in_mad); 660 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 661 in_mad->attr_mod = cpu_to_be32(port); 662 663 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 664 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 665 666 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 667 in_mad, out_mad); 668 if (err) 669 goto out; 670 671 672 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 673 props->lmc = out_mad->data[34] & 0x7; 674 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 675 props->sm_sl = out_mad->data[36] & 0xf; 676 props->state = out_mad->data[32] & 0xf; 677 props->phys_state = out_mad->data[33] >> 4; 678 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 679 if (netw_view) 680 props->gid_tbl_len = out_mad->data[50]; 681 else 682 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 683 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 684 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 685 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 686 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 687 props->active_width = out_mad->data[31] & 0xf; 688 props->active_speed = out_mad->data[35] >> 4; 689 props->max_mtu = out_mad->data[41] & 0xf; 690 props->active_mtu = out_mad->data[36] >> 4; 691 props->subnet_timeout = out_mad->data[51] & 0x1f; 692 props->max_vl_num = out_mad->data[37] >> 4; 693 props->init_type_reply = out_mad->data[41] >> 4; 694 695 /* Check if extended speeds (EDR/FDR/...) are supported */ 696 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 697 ext_active_speed = out_mad->data[62] >> 4; 698 699 switch (ext_active_speed) { 700 case 1: 701 props->active_speed = IB_SPEED_FDR; 702 break; 703 case 2: 704 props->active_speed = IB_SPEED_EDR; 705 break; 706 } 707 } 708 709 /* If reported active speed is QDR, check if is FDR-10 */ 710 if (props->active_speed == IB_SPEED_QDR) { 711 init_query_mad(in_mad); 712 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 713 in_mad->attr_mod = cpu_to_be32(port); 714 715 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 716 NULL, NULL, in_mad, out_mad); 717 if (err) 718 goto out; 719 720 /* Checking LinkSpeedActive for FDR-10 */ 721 if (out_mad->data[15] & 0x1) 722 props->active_speed = IB_SPEED_FDR10; 723 } 724 725 /* Avoid wrong speed value returned by FW if the IB link is down. */ 726 if (props->state == IB_PORT_DOWN) 727 props->active_speed = IB_SPEED_SDR; 728 729 out: 730 kfree(in_mad); 731 kfree(out_mad); 732 return err; 733 } 734 735 static u8 state_to_phys_state(enum ib_port_state state) 736 { 737 return state == IB_PORT_ACTIVE ? 738 IB_PORT_PHYS_STATE_LINK_UP : IB_PORT_PHYS_STATE_DISABLED; 739 } 740 741 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 742 struct ib_port_attr *props) 743 { 744 745 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 746 struct mlx4_ib_iboe *iboe = &mdev->iboe; 747 struct net_device *ndev; 748 enum ib_mtu tmp; 749 struct mlx4_cmd_mailbox *mailbox; 750 int err = 0; 751 int is_bonded = mlx4_is_bonded(mdev->dev); 752 753 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 754 if (IS_ERR(mailbox)) 755 return PTR_ERR(mailbox); 756 757 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 758 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 759 MLX4_CMD_WRAPPED); 760 if (err) 761 goto out; 762 763 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) || 764 (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ? 765 IB_WIDTH_4X : IB_WIDTH_1X; 766 props->active_speed = (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ? 767 IB_SPEED_FDR : IB_SPEED_QDR; 768 props->port_cap_flags = IB_PORT_CM_SUP; 769 props->ip_gids = true; 770 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 771 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 772 props->pkey_tbl_len = 1; 773 props->max_mtu = IB_MTU_4096; 774 props->max_vl_num = 2; 775 props->state = IB_PORT_DOWN; 776 props->phys_state = state_to_phys_state(props->state); 777 props->active_mtu = IB_MTU_256; 778 spin_lock_bh(&iboe->lock); 779 ndev = iboe->netdevs[port - 1]; 780 if (ndev && is_bonded) { 781 rcu_read_lock(); /* required to get upper dev */ 782 ndev = netdev_master_upper_dev_get_rcu(ndev); 783 rcu_read_unlock(); 784 } 785 if (!ndev) 786 goto out_unlock; 787 788 tmp = iboe_get_mtu(ndev->mtu); 789 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 790 791 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 792 IB_PORT_ACTIVE : IB_PORT_DOWN; 793 props->phys_state = state_to_phys_state(props->state); 794 out_unlock: 795 spin_unlock_bh(&iboe->lock); 796 out: 797 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 798 return err; 799 } 800 801 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 802 struct ib_port_attr *props, int netw_view) 803 { 804 int err; 805 806 /* props being zeroed by the caller, avoid zeroing it here */ 807 808 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 809 ib_link_query_port(ibdev, port, props, netw_view) : 810 eth_link_query_port(ibdev, port, props); 811 812 return err; 813 } 814 815 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 816 struct ib_port_attr *props) 817 { 818 /* returns host view */ 819 return __mlx4_ib_query_port(ibdev, port, props, 0); 820 } 821 822 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 823 union ib_gid *gid, int netw_view) 824 { 825 struct ib_smp *in_mad = NULL; 826 struct ib_smp *out_mad = NULL; 827 int err = -ENOMEM; 828 struct mlx4_ib_dev *dev = to_mdev(ibdev); 829 int clear = 0; 830 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 831 832 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 833 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 834 if (!in_mad || !out_mad) 835 goto out; 836 837 init_query_mad(in_mad); 838 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 839 in_mad->attr_mod = cpu_to_be32(port); 840 841 if (mlx4_is_mfunc(dev->dev) && netw_view) 842 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 843 844 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 845 if (err) 846 goto out; 847 848 memcpy(gid->raw, out_mad->data + 8, 8); 849 850 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 851 if (index) { 852 /* For any index > 0, return the null guid */ 853 err = 0; 854 clear = 1; 855 goto out; 856 } 857 } 858 859 init_query_mad(in_mad); 860 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 861 in_mad->attr_mod = cpu_to_be32(index / 8); 862 863 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 864 NULL, NULL, in_mad, out_mad); 865 if (err) 866 goto out; 867 868 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 869 870 out: 871 if (clear) 872 memset(gid->raw + 8, 0, 8); 873 kfree(in_mad); 874 kfree(out_mad); 875 return err; 876 } 877 878 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 879 union ib_gid *gid) 880 { 881 if (rdma_protocol_ib(ibdev, port)) 882 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 883 return 0; 884 } 885 886 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl) 887 { 888 union sl2vl_tbl_to_u64 sl2vl64; 889 struct ib_smp *in_mad = NULL; 890 struct ib_smp *out_mad = NULL; 891 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 892 int err = -ENOMEM; 893 int jj; 894 895 if (mlx4_is_slave(to_mdev(ibdev)->dev)) { 896 *sl2vl_tbl = 0; 897 return 0; 898 } 899 900 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 901 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 902 if (!in_mad || !out_mad) 903 goto out; 904 905 init_query_mad(in_mad); 906 in_mad->attr_id = IB_SMP_ATTR_SL_TO_VL_TABLE; 907 in_mad->attr_mod = 0; 908 909 if (mlx4_is_mfunc(to_mdev(ibdev)->dev)) 910 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 911 912 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 913 in_mad, out_mad); 914 if (err) 915 goto out; 916 917 for (jj = 0; jj < 8; jj++) 918 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj]; 919 *sl2vl_tbl = sl2vl64.sl64; 920 921 out: 922 kfree(in_mad); 923 kfree(out_mad); 924 return err; 925 } 926 927 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev) 928 { 929 u64 sl2vl; 930 int i; 931 int err; 932 933 for (i = 1; i <= mdev->dev->caps.num_ports; i++) { 934 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH) 935 continue; 936 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl); 937 if (err) { 938 pr_err("Unable to get default sl to vl mapping for port %d. Using all zeroes (%d)\n", 939 i, err); 940 sl2vl = 0; 941 } 942 atomic64_set(&mdev->sl2vl[i - 1], sl2vl); 943 } 944 } 945 946 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 947 u16 *pkey, int netw_view) 948 { 949 struct ib_smp *in_mad = NULL; 950 struct ib_smp *out_mad = NULL; 951 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 952 int err = -ENOMEM; 953 954 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 955 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 956 if (!in_mad || !out_mad) 957 goto out; 958 959 init_query_mad(in_mad); 960 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 961 in_mad->attr_mod = cpu_to_be32(index / 32); 962 963 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 964 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 965 966 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 967 in_mad, out_mad); 968 if (err) 969 goto out; 970 971 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 972 973 out: 974 kfree(in_mad); 975 kfree(out_mad); 976 return err; 977 } 978 979 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 980 { 981 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 982 } 983 984 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 985 struct ib_device_modify *props) 986 { 987 struct mlx4_cmd_mailbox *mailbox; 988 unsigned long flags; 989 990 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 991 return -EOPNOTSUPP; 992 993 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 994 return 0; 995 996 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 997 return -EOPNOTSUPP; 998 999 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 1000 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1001 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 1002 1003 /* 1004 * If possible, pass node desc to FW, so it can generate 1005 * a 144 trap. If cmd fails, just ignore. 1006 */ 1007 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 1008 if (IS_ERR(mailbox)) 1009 return 0; 1010 1011 memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1012 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 1013 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 1014 1015 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 1016 1017 return 0; 1018 } 1019 1020 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 1021 u32 cap_mask) 1022 { 1023 struct mlx4_cmd_mailbox *mailbox; 1024 int err; 1025 1026 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 1027 if (IS_ERR(mailbox)) 1028 return PTR_ERR(mailbox); 1029 1030 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 1031 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 1032 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 1033 } else { 1034 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 1035 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 1036 } 1037 1038 err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE, 1039 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1040 MLX4_CMD_WRAPPED); 1041 1042 mlx4_free_cmd_mailbox(dev->dev, mailbox); 1043 return err; 1044 } 1045 1046 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 1047 struct ib_port_modify *props) 1048 { 1049 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 1050 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 1051 struct ib_port_attr attr; 1052 u32 cap_mask; 1053 int err; 1054 1055 /* return OK if this is RoCE. CM calls ib_modify_port() regardless 1056 * of whether port link layer is ETH or IB. For ETH ports, qkey 1057 * violations and port capabilities are not meaningful. 1058 */ 1059 if (is_eth) 1060 return 0; 1061 1062 mutex_lock(&mdev->cap_mask_mutex); 1063 1064 err = ib_query_port(ibdev, port, &attr); 1065 if (err) 1066 goto out; 1067 1068 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 1069 ~props->clr_port_cap_mask; 1070 1071 err = mlx4_ib_SET_PORT(mdev, port, 1072 !!(mask & IB_PORT_RESET_QKEY_CNTR), 1073 cap_mask); 1074 1075 out: 1076 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 1077 return err; 1078 } 1079 1080 static int mlx4_ib_alloc_ucontext(struct ib_ucontext *uctx, 1081 struct ib_udata *udata) 1082 { 1083 struct ib_device *ibdev = uctx->device; 1084 struct mlx4_ib_dev *dev = to_mdev(ibdev); 1085 struct mlx4_ib_ucontext *context = to_mucontext(uctx); 1086 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 1087 struct mlx4_ib_alloc_ucontext_resp resp; 1088 int err; 1089 1090 if (!dev->ib_active) 1091 return -EAGAIN; 1092 1093 if (ibdev->ops.uverbs_abi_ver == 1094 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 1095 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 1096 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 1097 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1098 } else { 1099 resp.dev_caps = dev->dev->caps.userspace_caps; 1100 resp.qp_tab_size = dev->dev->caps.num_qps; 1101 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 1102 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1103 resp.cqe_size = dev->dev->caps.cqe_size; 1104 } 1105 1106 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 1107 if (err) 1108 return err; 1109 1110 INIT_LIST_HEAD(&context->db_page_list); 1111 mutex_init(&context->db_page_mutex); 1112 1113 INIT_LIST_HEAD(&context->wqn_ranges_list); 1114 mutex_init(&context->wqn_ranges_mutex); 1115 1116 if (ibdev->ops.uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 1117 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 1118 else 1119 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1120 1121 if (err) { 1122 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 1123 return -EFAULT; 1124 } 1125 1126 return err; 1127 } 1128 1129 static void mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 1130 { 1131 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 1132 1133 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 1134 } 1135 1136 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) 1137 { 1138 } 1139 1140 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 1141 { 1142 struct mlx4_ib_dev *dev = to_mdev(context->device); 1143 1144 switch (vma->vm_pgoff) { 1145 case 0: 1146 return rdma_user_mmap_io(context, vma, 1147 to_mucontext(context)->uar.pfn, 1148 PAGE_SIZE, 1149 pgprot_noncached(vma->vm_page_prot)); 1150 1151 case 1: 1152 if (dev->dev->caps.bf_reg_size == 0) 1153 return -EINVAL; 1154 return rdma_user_mmap_io( 1155 context, vma, 1156 to_mucontext(context)->uar.pfn + 1157 dev->dev->caps.num_uars, 1158 PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot)); 1159 1160 case 3: { 1161 struct mlx4_clock_params params; 1162 int ret; 1163 1164 ret = mlx4_get_internal_clock_params(dev->dev, ¶ms); 1165 if (ret) 1166 return ret; 1167 1168 return rdma_user_mmap_io( 1169 context, vma, 1170 (pci_resource_start(dev->dev->persist->pdev, 1171 params.bar) + 1172 params.offset) >> 1173 PAGE_SHIFT, 1174 PAGE_SIZE, pgprot_noncached(vma->vm_page_prot)); 1175 } 1176 1177 default: 1178 return -EINVAL; 1179 } 1180 } 1181 1182 static int mlx4_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 1183 { 1184 struct mlx4_ib_pd *pd = to_mpd(ibpd); 1185 struct ib_device *ibdev = ibpd->device; 1186 int err; 1187 1188 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 1189 if (err) 1190 return err; 1191 1192 if (udata && ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) { 1193 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 1194 return -EFAULT; 1195 } 1196 return 0; 1197 } 1198 1199 static void mlx4_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 1200 { 1201 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 1202 } 1203 1204 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 1205 struct ib_udata *udata) 1206 { 1207 struct mlx4_ib_xrcd *xrcd; 1208 struct ib_cq_init_attr cq_attr = {}; 1209 int err; 1210 1211 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 1212 return ERR_PTR(-ENOSYS); 1213 1214 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 1215 if (!xrcd) 1216 return ERR_PTR(-ENOMEM); 1217 1218 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 1219 if (err) 1220 goto err1; 1221 1222 xrcd->pd = ib_alloc_pd(ibdev, 0); 1223 if (IS_ERR(xrcd->pd)) { 1224 err = PTR_ERR(xrcd->pd); 1225 goto err2; 1226 } 1227 1228 cq_attr.cqe = 1; 1229 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr); 1230 if (IS_ERR(xrcd->cq)) { 1231 err = PTR_ERR(xrcd->cq); 1232 goto err3; 1233 } 1234 1235 return &xrcd->ibxrcd; 1236 1237 err3: 1238 ib_dealloc_pd(xrcd->pd); 1239 err2: 1240 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 1241 err1: 1242 kfree(xrcd); 1243 return ERR_PTR(err); 1244 } 1245 1246 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata) 1247 { 1248 ib_destroy_cq(to_mxrcd(xrcd)->cq); 1249 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 1250 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 1251 kfree(xrcd); 1252 1253 return 0; 1254 } 1255 1256 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 1257 { 1258 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1259 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1260 struct mlx4_ib_gid_entry *ge; 1261 1262 ge = kzalloc(sizeof *ge, GFP_KERNEL); 1263 if (!ge) 1264 return -ENOMEM; 1265 1266 ge->gid = *gid; 1267 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 1268 ge->port = mqp->port; 1269 ge->added = 1; 1270 } 1271 1272 mutex_lock(&mqp->mutex); 1273 list_add_tail(&ge->list, &mqp->gid_list); 1274 mutex_unlock(&mqp->mutex); 1275 1276 return 0; 1277 } 1278 1279 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev, 1280 struct mlx4_ib_counters *ctr_table) 1281 { 1282 struct counter_index *counter, *tmp_count; 1283 1284 mutex_lock(&ctr_table->mutex); 1285 list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list, 1286 list) { 1287 if (counter->allocated) 1288 mlx4_counter_free(ibdev->dev, counter->index); 1289 list_del(&counter->list); 1290 kfree(counter); 1291 } 1292 mutex_unlock(&ctr_table->mutex); 1293 } 1294 1295 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 1296 union ib_gid *gid) 1297 { 1298 struct net_device *ndev; 1299 int ret = 0; 1300 1301 if (!mqp->port) 1302 return 0; 1303 1304 spin_lock_bh(&mdev->iboe.lock); 1305 ndev = mdev->iboe.netdevs[mqp->port - 1]; 1306 if (ndev) 1307 dev_hold(ndev); 1308 spin_unlock_bh(&mdev->iboe.lock); 1309 1310 if (ndev) { 1311 ret = 1; 1312 dev_put(ndev); 1313 } 1314 1315 return ret; 1316 } 1317 1318 struct mlx4_ib_steering { 1319 struct list_head list; 1320 struct mlx4_flow_reg_id reg_id; 1321 union ib_gid gid; 1322 }; 1323 1324 #define LAST_ETH_FIELD vlan_tag 1325 #define LAST_IB_FIELD sl 1326 #define LAST_IPV4_FIELD dst_ip 1327 #define LAST_TCP_UDP_FIELD src_port 1328 1329 /* Field is the last supported field */ 1330 #define FIELDS_NOT_SUPPORTED(filter, field)\ 1331 memchr_inv((void *)&filter.field +\ 1332 sizeof(filter.field), 0,\ 1333 sizeof(filter) -\ 1334 offsetof(typeof(filter), field) -\ 1335 sizeof(filter.field)) 1336 1337 static int parse_flow_attr(struct mlx4_dev *dev, 1338 u32 qp_num, 1339 union ib_flow_spec *ib_spec, 1340 struct _rule_hw *mlx4_spec) 1341 { 1342 enum mlx4_net_trans_rule_id type; 1343 1344 switch (ib_spec->type) { 1345 case IB_FLOW_SPEC_ETH: 1346 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) 1347 return -ENOTSUPP; 1348 1349 type = MLX4_NET_TRANS_RULE_ID_ETH; 1350 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 1351 ETH_ALEN); 1352 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 1353 ETH_ALEN); 1354 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 1355 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 1356 break; 1357 case IB_FLOW_SPEC_IB: 1358 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD)) 1359 return -ENOTSUPP; 1360 1361 type = MLX4_NET_TRANS_RULE_ID_IB; 1362 mlx4_spec->ib.l3_qpn = 1363 cpu_to_be32(qp_num); 1364 mlx4_spec->ib.qpn_mask = 1365 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 1366 break; 1367 1368 1369 case IB_FLOW_SPEC_IPV4: 1370 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) 1371 return -ENOTSUPP; 1372 1373 type = MLX4_NET_TRANS_RULE_ID_IPV4; 1374 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 1375 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 1376 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 1377 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 1378 break; 1379 1380 case IB_FLOW_SPEC_TCP: 1381 case IB_FLOW_SPEC_UDP: 1382 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) 1383 return -ENOTSUPP; 1384 1385 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 1386 MLX4_NET_TRANS_RULE_ID_TCP : 1387 MLX4_NET_TRANS_RULE_ID_UDP; 1388 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 1389 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 1390 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 1391 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 1392 break; 1393 1394 default: 1395 return -EINVAL; 1396 } 1397 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 1398 mlx4_hw_rule_sz(dev, type) < 0) 1399 return -EINVAL; 1400 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 1401 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 1402 return mlx4_hw_rule_sz(dev, type); 1403 } 1404 1405 struct default_rules { 1406 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1407 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1408 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1409 __u8 link_layer; 1410 }; 1411 static const struct default_rules default_table[] = { 1412 { 1413 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 1414 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 1415 .rules_create_list = {IB_FLOW_SPEC_IB}, 1416 .link_layer = IB_LINK_LAYER_INFINIBAND 1417 } 1418 }; 1419 1420 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 1421 struct ib_flow_attr *flow_attr) 1422 { 1423 int i, j, k; 1424 void *ib_flow; 1425 const struct default_rules *pdefault_rules = default_table; 1426 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 1427 1428 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 1429 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1430 memset(&field_types, 0, sizeof(field_types)); 1431 1432 if (link_layer != pdefault_rules->link_layer) 1433 continue; 1434 1435 ib_flow = flow_attr + 1; 1436 /* we assume the specs are sorted */ 1437 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 1438 j < flow_attr->num_of_specs; k++) { 1439 union ib_flow_spec *current_flow = 1440 (union ib_flow_spec *)ib_flow; 1441 1442 /* same layer but different type */ 1443 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 1444 (pdefault_rules->mandatory_fields[k] & 1445 IB_FLOW_SPEC_LAYER_MASK)) && 1446 (current_flow->type != 1447 pdefault_rules->mandatory_fields[k])) 1448 goto out; 1449 1450 /* same layer, try match next one */ 1451 if (current_flow->type == 1452 pdefault_rules->mandatory_fields[k]) { 1453 j++; 1454 ib_flow += 1455 ((union ib_flow_spec *)ib_flow)->size; 1456 } 1457 } 1458 1459 ib_flow = flow_attr + 1; 1460 for (j = 0; j < flow_attr->num_of_specs; 1461 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 1462 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 1463 /* same layer and same type */ 1464 if (((union ib_flow_spec *)ib_flow)->type == 1465 pdefault_rules->mandatory_not_fields[k]) 1466 goto out; 1467 1468 return i; 1469 } 1470 out: 1471 return -1; 1472 } 1473 1474 static int __mlx4_ib_create_default_rules( 1475 struct mlx4_ib_dev *mdev, 1476 struct ib_qp *qp, 1477 const struct default_rules *pdefault_rules, 1478 struct _rule_hw *mlx4_spec) { 1479 int size = 0; 1480 int i; 1481 1482 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 1483 int ret; 1484 union ib_flow_spec ib_spec; 1485 switch (pdefault_rules->rules_create_list[i]) { 1486 case 0: 1487 /* no rule */ 1488 continue; 1489 case IB_FLOW_SPEC_IB: 1490 ib_spec.type = IB_FLOW_SPEC_IB; 1491 ib_spec.size = sizeof(struct ib_flow_spec_ib); 1492 1493 break; 1494 default: 1495 /* invalid rule */ 1496 return -EINVAL; 1497 } 1498 /* We must put empty rule, qpn is being ignored */ 1499 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1500 mlx4_spec); 1501 if (ret < 0) { 1502 pr_info("invalid parsing\n"); 1503 return -EINVAL; 1504 } 1505 1506 mlx4_spec = (void *)mlx4_spec + ret; 1507 size += ret; 1508 } 1509 return size; 1510 } 1511 1512 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1513 int domain, 1514 enum mlx4_net_trans_promisc_mode flow_type, 1515 u64 *reg_id) 1516 { 1517 int ret, i; 1518 int size = 0; 1519 void *ib_flow; 1520 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1521 struct mlx4_cmd_mailbox *mailbox; 1522 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1523 int default_flow; 1524 1525 static const u16 __mlx4_domain[] = { 1526 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 1527 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 1528 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 1529 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 1530 }; 1531 1532 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1533 pr_err("Invalid priority value %d\n", flow_attr->priority); 1534 return -EINVAL; 1535 } 1536 1537 if (domain >= IB_FLOW_DOMAIN_NUM) { 1538 pr_err("Invalid domain value %d\n", domain); 1539 return -EINVAL; 1540 } 1541 1542 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1543 return -EINVAL; 1544 1545 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1546 if (IS_ERR(mailbox)) 1547 return PTR_ERR(mailbox); 1548 ctrl = mailbox->buf; 1549 1550 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 1551 flow_attr->priority); 1552 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1553 ctrl->port = flow_attr->port; 1554 ctrl->qpn = cpu_to_be32(qp->qp_num); 1555 1556 ib_flow = flow_attr + 1; 1557 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1558 /* Add default flows */ 1559 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1560 if (default_flow >= 0) { 1561 ret = __mlx4_ib_create_default_rules( 1562 mdev, qp, default_table + default_flow, 1563 mailbox->buf + size); 1564 if (ret < 0) { 1565 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1566 return -EINVAL; 1567 } 1568 size += ret; 1569 } 1570 for (i = 0; i < flow_attr->num_of_specs; i++) { 1571 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1572 mailbox->buf + size); 1573 if (ret < 0) { 1574 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1575 return -EINVAL; 1576 } 1577 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1578 size += ret; 1579 } 1580 1581 if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR && 1582 flow_attr->num_of_specs == 1) { 1583 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1); 1584 enum ib_flow_spec_type header_spec = 1585 ((union ib_flow_spec *)(flow_attr + 1))->type; 1586 1587 if (header_spec == IB_FLOW_SPEC_ETH) 1588 mlx4_handle_eth_header_mcast_prio(ctrl, rule_header); 1589 } 1590 1591 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1592 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1593 MLX4_CMD_NATIVE); 1594 if (ret == -ENOMEM) 1595 pr_err("mcg table is full. Fail to register network rule.\n"); 1596 else if (ret == -ENXIO) 1597 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1598 else if (ret) 1599 pr_err("Invalid argument. Fail to register network rule.\n"); 1600 1601 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1602 return ret; 1603 } 1604 1605 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1606 { 1607 int err; 1608 err = mlx4_cmd(dev, reg_id, 0, 0, 1609 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1610 MLX4_CMD_NATIVE); 1611 if (err) 1612 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1613 reg_id); 1614 return err; 1615 } 1616 1617 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1618 u64 *reg_id) 1619 { 1620 void *ib_flow; 1621 union ib_flow_spec *ib_spec; 1622 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1623 int err = 0; 1624 1625 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 1626 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 1627 return 0; /* do nothing */ 1628 1629 ib_flow = flow_attr + 1; 1630 ib_spec = (union ib_flow_spec *)ib_flow; 1631 1632 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1633 return 0; /* do nothing */ 1634 1635 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1636 flow_attr->port, qp->qp_num, 1637 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1638 reg_id); 1639 return err; 1640 } 1641 1642 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev, 1643 struct ib_flow_attr *flow_attr, 1644 enum mlx4_net_trans_promisc_mode *type) 1645 { 1646 int err = 0; 1647 1648 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) || 1649 (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) || 1650 (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) { 1651 return -EOPNOTSUPP; 1652 } 1653 1654 if (flow_attr->num_of_specs == 0) { 1655 type[0] = MLX4_FS_MC_SNIFFER; 1656 type[1] = MLX4_FS_UC_SNIFFER; 1657 } else { 1658 union ib_flow_spec *ib_spec; 1659 1660 ib_spec = (union ib_flow_spec *)(flow_attr + 1); 1661 if (ib_spec->type != IB_FLOW_SPEC_ETH) 1662 return -EINVAL; 1663 1664 /* if all is zero than MC and UC */ 1665 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) { 1666 type[0] = MLX4_FS_MC_SNIFFER; 1667 type[1] = MLX4_FS_UC_SNIFFER; 1668 } else { 1669 u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01, 1670 ib_spec->eth.mask.dst_mac[1], 1671 ib_spec->eth.mask.dst_mac[2], 1672 ib_spec->eth.mask.dst_mac[3], 1673 ib_spec->eth.mask.dst_mac[4], 1674 ib_spec->eth.mask.dst_mac[5]}; 1675 1676 /* Above xor was only on MC bit, non empty mask is valid 1677 * only if this bit is set and rest are zero. 1678 */ 1679 if (!is_zero_ether_addr(&mac[0])) 1680 return -EINVAL; 1681 1682 if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac)) 1683 type[0] = MLX4_FS_MC_SNIFFER; 1684 else 1685 type[0] = MLX4_FS_UC_SNIFFER; 1686 } 1687 } 1688 1689 return err; 1690 } 1691 1692 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1693 struct ib_flow_attr *flow_attr, 1694 int domain, struct ib_udata *udata) 1695 { 1696 int err = 0, i = 0, j = 0; 1697 struct mlx4_ib_flow *mflow; 1698 enum mlx4_net_trans_promisc_mode type[2]; 1699 struct mlx4_dev *dev = (to_mdev(qp->device))->dev; 1700 int is_bonded = mlx4_is_bonded(dev); 1701 1702 if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt) 1703 return ERR_PTR(-EINVAL); 1704 1705 if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP) 1706 return ERR_PTR(-EOPNOTSUPP); 1707 1708 if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 1709 (flow_attr->type != IB_FLOW_ATTR_NORMAL)) 1710 return ERR_PTR(-EOPNOTSUPP); 1711 1712 if (udata && 1713 udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen)) 1714 return ERR_PTR(-EOPNOTSUPP); 1715 1716 memset(type, 0, sizeof(type)); 1717 1718 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1719 if (!mflow) { 1720 err = -ENOMEM; 1721 goto err_free; 1722 } 1723 1724 switch (flow_attr->type) { 1725 case IB_FLOW_ATTR_NORMAL: 1726 /* If dont trap flag (continue match) is set, under specific 1727 * condition traffic be replicated to given qp, 1728 * without stealing it 1729 */ 1730 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) { 1731 err = mlx4_ib_add_dont_trap_rule(dev, 1732 flow_attr, 1733 type); 1734 if (err) 1735 goto err_free; 1736 } else { 1737 type[0] = MLX4_FS_REGULAR; 1738 } 1739 break; 1740 1741 case IB_FLOW_ATTR_ALL_DEFAULT: 1742 type[0] = MLX4_FS_ALL_DEFAULT; 1743 break; 1744 1745 case IB_FLOW_ATTR_MC_DEFAULT: 1746 type[0] = MLX4_FS_MC_DEFAULT; 1747 break; 1748 1749 case IB_FLOW_ATTR_SNIFFER: 1750 type[0] = MLX4_FS_MIRROR_RX_PORT; 1751 type[1] = MLX4_FS_MIRROR_SX_PORT; 1752 break; 1753 1754 default: 1755 err = -EINVAL; 1756 goto err_free; 1757 } 1758 1759 while (i < ARRAY_SIZE(type) && type[i]) { 1760 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 1761 &mflow->reg_id[i].id); 1762 if (err) 1763 goto err_create_flow; 1764 if (is_bonded) { 1765 /* Application always sees one port so the mirror rule 1766 * must be on port #2 1767 */ 1768 flow_attr->port = 2; 1769 err = __mlx4_ib_create_flow(qp, flow_attr, 1770 domain, type[j], 1771 &mflow->reg_id[j].mirror); 1772 flow_attr->port = 1; 1773 if (err) 1774 goto err_create_flow; 1775 j++; 1776 } 1777 1778 i++; 1779 } 1780 1781 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1782 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1783 &mflow->reg_id[i].id); 1784 if (err) 1785 goto err_create_flow; 1786 1787 if (is_bonded) { 1788 flow_attr->port = 2; 1789 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1790 &mflow->reg_id[j].mirror); 1791 flow_attr->port = 1; 1792 if (err) 1793 goto err_create_flow; 1794 j++; 1795 } 1796 /* function to create mirror rule */ 1797 i++; 1798 } 1799 1800 return &mflow->ibflow; 1801 1802 err_create_flow: 1803 while (i) { 1804 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1805 mflow->reg_id[i].id); 1806 i--; 1807 } 1808 1809 while (j) { 1810 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1811 mflow->reg_id[j].mirror); 1812 j--; 1813 } 1814 err_free: 1815 kfree(mflow); 1816 return ERR_PTR(err); 1817 } 1818 1819 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1820 { 1821 int err, ret = 0; 1822 int i = 0; 1823 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1824 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1825 1826 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { 1827 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); 1828 if (err) 1829 ret = err; 1830 if (mflow->reg_id[i].mirror) { 1831 err = __mlx4_ib_destroy_flow(mdev->dev, 1832 mflow->reg_id[i].mirror); 1833 if (err) 1834 ret = err; 1835 } 1836 i++; 1837 } 1838 1839 kfree(mflow); 1840 return ret; 1841 } 1842 1843 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1844 { 1845 int err; 1846 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1847 struct mlx4_dev *dev = mdev->dev; 1848 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1849 struct mlx4_ib_steering *ib_steering = NULL; 1850 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1851 struct mlx4_flow_reg_id reg_id; 1852 1853 if (mdev->dev->caps.steering_mode == 1854 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1855 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1856 if (!ib_steering) 1857 return -ENOMEM; 1858 } 1859 1860 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1861 !!(mqp->flags & 1862 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1863 prot, ®_id.id); 1864 if (err) { 1865 pr_err("multicast attach op failed, err %d\n", err); 1866 goto err_malloc; 1867 } 1868 1869 reg_id.mirror = 0; 1870 if (mlx4_is_bonded(dev)) { 1871 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 1872 (mqp->port == 1) ? 2 : 1, 1873 !!(mqp->flags & 1874 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1875 prot, ®_id.mirror); 1876 if (err) 1877 goto err_add; 1878 } 1879 1880 err = add_gid_entry(ibqp, gid); 1881 if (err) 1882 goto err_add; 1883 1884 if (ib_steering) { 1885 memcpy(ib_steering->gid.raw, gid->raw, 16); 1886 ib_steering->reg_id = reg_id; 1887 mutex_lock(&mqp->mutex); 1888 list_add(&ib_steering->list, &mqp->steering_rules); 1889 mutex_unlock(&mqp->mutex); 1890 } 1891 return 0; 1892 1893 err_add: 1894 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1895 prot, reg_id.id); 1896 if (reg_id.mirror) 1897 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1898 prot, reg_id.mirror); 1899 err_malloc: 1900 kfree(ib_steering); 1901 1902 return err; 1903 } 1904 1905 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1906 { 1907 struct mlx4_ib_gid_entry *ge; 1908 struct mlx4_ib_gid_entry *tmp; 1909 struct mlx4_ib_gid_entry *ret = NULL; 1910 1911 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1912 if (!memcmp(raw, ge->gid.raw, 16)) { 1913 ret = ge; 1914 break; 1915 } 1916 } 1917 1918 return ret; 1919 } 1920 1921 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1922 { 1923 int err; 1924 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1925 struct mlx4_dev *dev = mdev->dev; 1926 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1927 struct net_device *ndev; 1928 struct mlx4_ib_gid_entry *ge; 1929 struct mlx4_flow_reg_id reg_id = {0, 0}; 1930 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1931 1932 if (mdev->dev->caps.steering_mode == 1933 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1934 struct mlx4_ib_steering *ib_steering; 1935 1936 mutex_lock(&mqp->mutex); 1937 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1938 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1939 list_del(&ib_steering->list); 1940 break; 1941 } 1942 } 1943 mutex_unlock(&mqp->mutex); 1944 if (&ib_steering->list == &mqp->steering_rules) { 1945 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1946 return -EINVAL; 1947 } 1948 reg_id = ib_steering->reg_id; 1949 kfree(ib_steering); 1950 } 1951 1952 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1953 prot, reg_id.id); 1954 if (err) 1955 return err; 1956 1957 if (mlx4_is_bonded(dev)) { 1958 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1959 prot, reg_id.mirror); 1960 if (err) 1961 return err; 1962 } 1963 1964 mutex_lock(&mqp->mutex); 1965 ge = find_gid_entry(mqp, gid->raw); 1966 if (ge) { 1967 spin_lock_bh(&mdev->iboe.lock); 1968 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1969 if (ndev) 1970 dev_hold(ndev); 1971 spin_unlock_bh(&mdev->iboe.lock); 1972 if (ndev) 1973 dev_put(ndev); 1974 list_del(&ge->list); 1975 kfree(ge); 1976 } else 1977 pr_warn("could not find mgid entry\n"); 1978 1979 mutex_unlock(&mqp->mutex); 1980 1981 return 0; 1982 } 1983 1984 static int init_node_data(struct mlx4_ib_dev *dev) 1985 { 1986 struct ib_smp *in_mad = NULL; 1987 struct ib_smp *out_mad = NULL; 1988 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1989 int err = -ENOMEM; 1990 1991 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1992 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1993 if (!in_mad || !out_mad) 1994 goto out; 1995 1996 init_query_mad(in_mad); 1997 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1998 if (mlx4_is_master(dev->dev)) 1999 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 2000 2001 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2002 if (err) 2003 goto out; 2004 2005 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 2006 2007 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 2008 2009 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2010 if (err) 2011 goto out; 2012 2013 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 2014 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 2015 2016 out: 2017 kfree(in_mad); 2018 kfree(out_mad); 2019 return err; 2020 } 2021 2022 static ssize_t hca_type_show(struct device *device, 2023 struct device_attribute *attr, char *buf) 2024 { 2025 struct mlx4_ib_dev *dev = 2026 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2027 return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device); 2028 } 2029 static DEVICE_ATTR_RO(hca_type); 2030 2031 static ssize_t hw_rev_show(struct device *device, 2032 struct device_attribute *attr, char *buf) 2033 { 2034 struct mlx4_ib_dev *dev = 2035 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2036 return sprintf(buf, "%x\n", dev->dev->rev_id); 2037 } 2038 static DEVICE_ATTR_RO(hw_rev); 2039 2040 static ssize_t board_id_show(struct device *device, 2041 struct device_attribute *attr, char *buf) 2042 { 2043 struct mlx4_ib_dev *dev = 2044 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2045 2046 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 2047 dev->dev->board_id); 2048 } 2049 static DEVICE_ATTR_RO(board_id); 2050 2051 static struct attribute *mlx4_class_attributes[] = { 2052 &dev_attr_hw_rev.attr, 2053 &dev_attr_hca_type.attr, 2054 &dev_attr_board_id.attr, 2055 NULL 2056 }; 2057 2058 static const struct attribute_group mlx4_attr_group = { 2059 .attrs = mlx4_class_attributes, 2060 }; 2061 2062 struct diag_counter { 2063 const char *name; 2064 u32 offset; 2065 }; 2066 2067 #define DIAG_COUNTER(_name, _offset) \ 2068 { .name = #_name, .offset = _offset } 2069 2070 static const struct diag_counter diag_basic[] = { 2071 DIAG_COUNTER(rq_num_lle, 0x00), 2072 DIAG_COUNTER(sq_num_lle, 0x04), 2073 DIAG_COUNTER(rq_num_lqpoe, 0x08), 2074 DIAG_COUNTER(sq_num_lqpoe, 0x0C), 2075 DIAG_COUNTER(rq_num_lpe, 0x18), 2076 DIAG_COUNTER(sq_num_lpe, 0x1C), 2077 DIAG_COUNTER(rq_num_wrfe, 0x20), 2078 DIAG_COUNTER(sq_num_wrfe, 0x24), 2079 DIAG_COUNTER(sq_num_mwbe, 0x2C), 2080 DIAG_COUNTER(sq_num_bre, 0x34), 2081 DIAG_COUNTER(sq_num_rire, 0x44), 2082 DIAG_COUNTER(rq_num_rire, 0x48), 2083 DIAG_COUNTER(sq_num_rae, 0x4C), 2084 DIAG_COUNTER(rq_num_rae, 0x50), 2085 DIAG_COUNTER(sq_num_roe, 0x54), 2086 DIAG_COUNTER(sq_num_tree, 0x5C), 2087 DIAG_COUNTER(sq_num_rree, 0x64), 2088 DIAG_COUNTER(rq_num_rnr, 0x68), 2089 DIAG_COUNTER(sq_num_rnr, 0x6C), 2090 DIAG_COUNTER(rq_num_oos, 0x100), 2091 DIAG_COUNTER(sq_num_oos, 0x104), 2092 }; 2093 2094 static const struct diag_counter diag_ext[] = { 2095 DIAG_COUNTER(rq_num_dup, 0x130), 2096 DIAG_COUNTER(sq_num_to, 0x134), 2097 }; 2098 2099 static const struct diag_counter diag_device_only[] = { 2100 DIAG_COUNTER(num_cqovf, 0x1A0), 2101 DIAG_COUNTER(rq_num_udsdprd, 0x118), 2102 }; 2103 2104 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev, 2105 u8 port_num) 2106 { 2107 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2108 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2109 2110 if (!diag[!!port_num].name) 2111 return NULL; 2112 2113 return rdma_alloc_hw_stats_struct(diag[!!port_num].name, 2114 diag[!!port_num].num_counters, 2115 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2116 } 2117 2118 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev, 2119 struct rdma_hw_stats *stats, 2120 u8 port, int index) 2121 { 2122 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2123 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2124 u32 hw_value[ARRAY_SIZE(diag_device_only) + 2125 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {}; 2126 int ret; 2127 int i; 2128 2129 ret = mlx4_query_diag_counters(dev->dev, 2130 MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS, 2131 diag[!!port].offset, hw_value, 2132 diag[!!port].num_counters, port); 2133 2134 if (ret) 2135 return ret; 2136 2137 for (i = 0; i < diag[!!port].num_counters; i++) 2138 stats->value[i] = hw_value[i]; 2139 2140 return diag[!!port].num_counters; 2141 } 2142 2143 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev, 2144 const char ***name, 2145 u32 **offset, 2146 u32 *num, 2147 bool port) 2148 { 2149 u32 num_counters; 2150 2151 num_counters = ARRAY_SIZE(diag_basic); 2152 2153 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) 2154 num_counters += ARRAY_SIZE(diag_ext); 2155 2156 if (!port) 2157 num_counters += ARRAY_SIZE(diag_device_only); 2158 2159 *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL); 2160 if (!*name) 2161 return -ENOMEM; 2162 2163 *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL); 2164 if (!*offset) 2165 goto err_name; 2166 2167 *num = num_counters; 2168 2169 return 0; 2170 2171 err_name: 2172 kfree(*name); 2173 return -ENOMEM; 2174 } 2175 2176 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev, 2177 const char **name, 2178 u32 *offset, 2179 bool port) 2180 { 2181 int i; 2182 int j; 2183 2184 for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) { 2185 name[i] = diag_basic[i].name; 2186 offset[i] = diag_basic[i].offset; 2187 } 2188 2189 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) { 2190 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) { 2191 name[j] = diag_ext[i].name; 2192 offset[j] = diag_ext[i].offset; 2193 } 2194 } 2195 2196 if (!port) { 2197 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) { 2198 name[j] = diag_device_only[i].name; 2199 offset[j] = diag_device_only[i].offset; 2200 } 2201 } 2202 } 2203 2204 static const struct ib_device_ops mlx4_ib_hw_stats_ops = { 2205 .alloc_hw_stats = mlx4_ib_alloc_hw_stats, 2206 .get_hw_stats = mlx4_ib_get_hw_stats, 2207 }; 2208 2209 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev) 2210 { 2211 struct mlx4_ib_diag_counters *diag = ibdev->diag_counters; 2212 int i; 2213 int ret; 2214 bool per_port = !!(ibdev->dev->caps.flags2 & 2215 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT); 2216 2217 if (mlx4_is_slave(ibdev->dev)) 2218 return 0; 2219 2220 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2221 /* i == 1 means we are building port counters */ 2222 if (i && !per_port) 2223 continue; 2224 2225 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name, 2226 &diag[i].offset, 2227 &diag[i].num_counters, i); 2228 if (ret) 2229 goto err_alloc; 2230 2231 mlx4_ib_fill_diag_counters(ibdev, diag[i].name, 2232 diag[i].offset, i); 2233 } 2234 2235 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops); 2236 2237 return 0; 2238 2239 err_alloc: 2240 if (i) { 2241 kfree(diag[i - 1].name); 2242 kfree(diag[i - 1].offset); 2243 } 2244 2245 return ret; 2246 } 2247 2248 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev) 2249 { 2250 int i; 2251 2252 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2253 kfree(ibdev->diag_counters[i].offset); 2254 kfree(ibdev->diag_counters[i].name); 2255 } 2256 } 2257 2258 #define MLX4_IB_INVALID_MAC ((u64)-1) 2259 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 2260 struct net_device *dev, 2261 int port) 2262 { 2263 u64 new_smac = 0; 2264 u64 release_mac = MLX4_IB_INVALID_MAC; 2265 struct mlx4_ib_qp *qp; 2266 2267 read_lock(&dev_base_lock); 2268 new_smac = mlx4_mac_to_u64(dev->dev_addr); 2269 read_unlock(&dev_base_lock); 2270 2271 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); 2272 2273 /* no need for update QP1 and mac registration in non-SRIOV */ 2274 if (!mlx4_is_mfunc(ibdev->dev)) 2275 return; 2276 2277 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 2278 qp = ibdev->qp1_proxy[port - 1]; 2279 if (qp) { 2280 int new_smac_index; 2281 u64 old_smac; 2282 struct mlx4_update_qp_params update_params; 2283 2284 mutex_lock(&qp->mutex); 2285 old_smac = qp->pri.smac; 2286 if (new_smac == old_smac) 2287 goto unlock; 2288 2289 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 2290 2291 if (new_smac_index < 0) 2292 goto unlock; 2293 2294 update_params.smac_index = new_smac_index; 2295 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, 2296 &update_params)) { 2297 release_mac = new_smac; 2298 goto unlock; 2299 } 2300 /* if old port was zero, no mac was yet registered for this QP */ 2301 if (qp->pri.smac_port) 2302 release_mac = old_smac; 2303 qp->pri.smac = new_smac; 2304 qp->pri.smac_port = port; 2305 qp->pri.smac_index = new_smac_index; 2306 } 2307 2308 unlock: 2309 if (release_mac != MLX4_IB_INVALID_MAC) 2310 mlx4_unregister_mac(ibdev->dev, port, release_mac); 2311 if (qp) 2312 mutex_unlock(&qp->mutex); 2313 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 2314 } 2315 2316 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, 2317 struct net_device *dev, 2318 unsigned long event) 2319 2320 { 2321 struct mlx4_ib_iboe *iboe; 2322 int update_qps_port = -1; 2323 int port; 2324 2325 ASSERT_RTNL(); 2326 2327 iboe = &ibdev->iboe; 2328 2329 spin_lock_bh(&iboe->lock); 2330 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 2331 2332 iboe->netdevs[port - 1] = 2333 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 2334 2335 if (dev == iboe->netdevs[port - 1] && 2336 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || 2337 event == NETDEV_UP || event == NETDEV_CHANGE)) 2338 update_qps_port = port; 2339 2340 if (dev == iboe->netdevs[port - 1] && 2341 (event == NETDEV_UP || event == NETDEV_DOWN)) { 2342 enum ib_port_state port_state; 2343 struct ib_event ibev = { }; 2344 2345 if (ib_get_cached_port_state(&ibdev->ib_dev, port, 2346 &port_state)) 2347 continue; 2348 2349 if (event == NETDEV_UP && 2350 (port_state != IB_PORT_ACTIVE || 2351 iboe->last_port_state[port - 1] != IB_PORT_DOWN)) 2352 continue; 2353 if (event == NETDEV_DOWN && 2354 (port_state != IB_PORT_DOWN || 2355 iboe->last_port_state[port - 1] != IB_PORT_ACTIVE)) 2356 continue; 2357 iboe->last_port_state[port - 1] = port_state; 2358 2359 ibev.device = &ibdev->ib_dev; 2360 ibev.element.port_num = port; 2361 ibev.event = event == NETDEV_UP ? IB_EVENT_PORT_ACTIVE : 2362 IB_EVENT_PORT_ERR; 2363 ib_dispatch_event(&ibev); 2364 } 2365 2366 } 2367 spin_unlock_bh(&iboe->lock); 2368 2369 if (update_qps_port > 0) 2370 mlx4_ib_update_qps(ibdev, dev, update_qps_port); 2371 } 2372 2373 static int mlx4_ib_netdev_event(struct notifier_block *this, 2374 unsigned long event, void *ptr) 2375 { 2376 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 2377 struct mlx4_ib_dev *ibdev; 2378 2379 if (!net_eq(dev_net(dev), &init_net)) 2380 return NOTIFY_DONE; 2381 2382 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 2383 mlx4_ib_scan_netdevs(ibdev, dev, event); 2384 2385 return NOTIFY_DONE; 2386 } 2387 2388 static void init_pkeys(struct mlx4_ib_dev *ibdev) 2389 { 2390 int port; 2391 int slave; 2392 int i; 2393 2394 if (mlx4_is_master(ibdev->dev)) { 2395 for (slave = 0; slave <= ibdev->dev->persist->num_vfs; 2396 ++slave) { 2397 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2398 for (i = 0; 2399 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2400 ++i) { 2401 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 2402 /* master has the identity virt2phys pkey mapping */ 2403 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 2404 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 2405 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 2406 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 2407 } 2408 } 2409 } 2410 /* initialize pkey cache */ 2411 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2412 for (i = 0; 2413 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2414 ++i) 2415 ibdev->pkeys.phys_pkey_cache[port-1][i] = 2416 (i) ? 0 : 0xFFFF; 2417 } 2418 } 2419 } 2420 2421 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2422 { 2423 int i, j, eq = 0, total_eqs = 0; 2424 2425 ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors, 2426 sizeof(ibdev->eq_table[0]), GFP_KERNEL); 2427 if (!ibdev->eq_table) 2428 return; 2429 2430 for (i = 1; i <= dev->caps.num_ports; i++) { 2431 for (j = 0; j < mlx4_get_eqs_per_port(dev, i); 2432 j++, total_eqs++) { 2433 if (i > 1 && mlx4_is_eq_shared(dev, total_eqs)) 2434 continue; 2435 ibdev->eq_table[eq] = total_eqs; 2436 if (!mlx4_assign_eq(dev, i, 2437 &ibdev->eq_table[eq])) 2438 eq++; 2439 else 2440 ibdev->eq_table[eq] = -1; 2441 } 2442 } 2443 2444 for (i = eq; i < dev->caps.num_comp_vectors; 2445 ibdev->eq_table[i++] = -1) 2446 ; 2447 2448 /* Advertise the new number of EQs to clients */ 2449 ibdev->ib_dev.num_comp_vectors = eq; 2450 } 2451 2452 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2453 { 2454 int i; 2455 int total_eqs = ibdev->ib_dev.num_comp_vectors; 2456 2457 /* no eqs were allocated */ 2458 if (!ibdev->eq_table) 2459 return; 2460 2461 /* Reset the advertised EQ number */ 2462 ibdev->ib_dev.num_comp_vectors = 0; 2463 2464 for (i = 0; i < total_eqs; i++) 2465 mlx4_release_eq(dev, ibdev->eq_table[i]); 2466 2467 kfree(ibdev->eq_table); 2468 ibdev->eq_table = NULL; 2469 } 2470 2471 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num, 2472 struct ib_port_immutable *immutable) 2473 { 2474 struct ib_port_attr attr; 2475 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 2476 int err; 2477 2478 if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) { 2479 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 2480 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2481 } else { 2482 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) 2483 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 2484 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 2485 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE | 2486 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2487 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET; 2488 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE | 2489 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP)) 2490 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2491 } 2492 2493 err = ib_query_port(ibdev, port_num, &attr); 2494 if (err) 2495 return err; 2496 2497 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2498 immutable->gid_tbl_len = attr.gid_tbl_len; 2499 2500 return 0; 2501 } 2502 2503 static void get_fw_ver_str(struct ib_device *device, char *str) 2504 { 2505 struct mlx4_ib_dev *dev = 2506 container_of(device, struct mlx4_ib_dev, ib_dev); 2507 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d", 2508 (int) (dev->dev->caps.fw_ver >> 32), 2509 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 2510 (int) dev->dev->caps.fw_ver & 0xffff); 2511 } 2512 2513 static const struct ib_device_ops mlx4_ib_dev_ops = { 2514 .owner = THIS_MODULE, 2515 .driver_id = RDMA_DRIVER_MLX4, 2516 .uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION, 2517 2518 .add_gid = mlx4_ib_add_gid, 2519 .alloc_mr = mlx4_ib_alloc_mr, 2520 .alloc_pd = mlx4_ib_alloc_pd, 2521 .alloc_ucontext = mlx4_ib_alloc_ucontext, 2522 .attach_mcast = mlx4_ib_mcg_attach, 2523 .create_ah = mlx4_ib_create_ah, 2524 .create_cq = mlx4_ib_create_cq, 2525 .create_qp = mlx4_ib_create_qp, 2526 .create_srq = mlx4_ib_create_srq, 2527 .dealloc_pd = mlx4_ib_dealloc_pd, 2528 .dealloc_ucontext = mlx4_ib_dealloc_ucontext, 2529 .del_gid = mlx4_ib_del_gid, 2530 .dereg_mr = mlx4_ib_dereg_mr, 2531 .destroy_ah = mlx4_ib_destroy_ah, 2532 .destroy_cq = mlx4_ib_destroy_cq, 2533 .destroy_qp = mlx4_ib_destroy_qp, 2534 .destroy_srq = mlx4_ib_destroy_srq, 2535 .detach_mcast = mlx4_ib_mcg_detach, 2536 .disassociate_ucontext = mlx4_ib_disassociate_ucontext, 2537 .drain_rq = mlx4_ib_drain_rq, 2538 .drain_sq = mlx4_ib_drain_sq, 2539 .get_dev_fw_str = get_fw_ver_str, 2540 .get_dma_mr = mlx4_ib_get_dma_mr, 2541 .get_link_layer = mlx4_ib_port_link_layer, 2542 .get_netdev = mlx4_ib_get_netdev, 2543 .get_port_immutable = mlx4_port_immutable, 2544 .map_mr_sg = mlx4_ib_map_mr_sg, 2545 .mmap = mlx4_ib_mmap, 2546 .modify_cq = mlx4_ib_modify_cq, 2547 .modify_device = mlx4_ib_modify_device, 2548 .modify_port = mlx4_ib_modify_port, 2549 .modify_qp = mlx4_ib_modify_qp, 2550 .modify_srq = mlx4_ib_modify_srq, 2551 .poll_cq = mlx4_ib_poll_cq, 2552 .post_recv = mlx4_ib_post_recv, 2553 .post_send = mlx4_ib_post_send, 2554 .post_srq_recv = mlx4_ib_post_srq_recv, 2555 .process_mad = mlx4_ib_process_mad, 2556 .query_ah = mlx4_ib_query_ah, 2557 .query_device = mlx4_ib_query_device, 2558 .query_gid = mlx4_ib_query_gid, 2559 .query_pkey = mlx4_ib_query_pkey, 2560 .query_port = mlx4_ib_query_port, 2561 .query_qp = mlx4_ib_query_qp, 2562 .query_srq = mlx4_ib_query_srq, 2563 .reg_user_mr = mlx4_ib_reg_user_mr, 2564 .req_notify_cq = mlx4_ib_arm_cq, 2565 .rereg_user_mr = mlx4_ib_rereg_user_mr, 2566 .resize_cq = mlx4_ib_resize_cq, 2567 2568 INIT_RDMA_OBJ_SIZE(ib_ah, mlx4_ib_ah, ibah), 2569 INIT_RDMA_OBJ_SIZE(ib_cq, mlx4_ib_cq, ibcq), 2570 INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd), 2571 INIT_RDMA_OBJ_SIZE(ib_srq, mlx4_ib_srq, ibsrq), 2572 INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext), 2573 }; 2574 2575 static const struct ib_device_ops mlx4_ib_dev_wq_ops = { 2576 .create_rwq_ind_table = mlx4_ib_create_rwq_ind_table, 2577 .create_wq = mlx4_ib_create_wq, 2578 .destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table, 2579 .destroy_wq = mlx4_ib_destroy_wq, 2580 .modify_wq = mlx4_ib_modify_wq, 2581 }; 2582 2583 static const struct ib_device_ops mlx4_ib_dev_fmr_ops = { 2584 .alloc_fmr = mlx4_ib_fmr_alloc, 2585 .dealloc_fmr = mlx4_ib_fmr_dealloc, 2586 .map_phys_fmr = mlx4_ib_map_phys_fmr, 2587 .unmap_fmr = mlx4_ib_unmap_fmr, 2588 }; 2589 2590 static const struct ib_device_ops mlx4_ib_dev_mw_ops = { 2591 .alloc_mw = mlx4_ib_alloc_mw, 2592 .dealloc_mw = mlx4_ib_dealloc_mw, 2593 }; 2594 2595 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = { 2596 .alloc_xrcd = mlx4_ib_alloc_xrcd, 2597 .dealloc_xrcd = mlx4_ib_dealloc_xrcd, 2598 }; 2599 2600 static const struct ib_device_ops mlx4_ib_dev_fs_ops = { 2601 .create_flow = mlx4_ib_create_flow, 2602 .destroy_flow = mlx4_ib_destroy_flow, 2603 }; 2604 2605 static void *mlx4_ib_add(struct mlx4_dev *dev) 2606 { 2607 struct mlx4_ib_dev *ibdev; 2608 int num_ports = 0; 2609 int i, j; 2610 int err; 2611 struct mlx4_ib_iboe *iboe; 2612 int ib_num_ports = 0; 2613 int num_req_counters; 2614 int allocated; 2615 u32 counter_index; 2616 struct counter_index *new_counter_index = NULL; 2617 2618 pr_info_once("%s", mlx4_ib_version); 2619 2620 num_ports = 0; 2621 mlx4_foreach_ib_transport_port(i, dev) 2622 num_ports++; 2623 2624 /* No point in registering a device with no ports... */ 2625 if (num_ports == 0) 2626 return NULL; 2627 2628 ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev); 2629 if (!ibdev) { 2630 dev_err(&dev->persist->pdev->dev, 2631 "Device struct alloc failed\n"); 2632 return NULL; 2633 } 2634 2635 iboe = &ibdev->iboe; 2636 2637 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 2638 goto err_dealloc; 2639 2640 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 2641 goto err_pd; 2642 2643 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 2644 PAGE_SIZE); 2645 if (!ibdev->uar_map) 2646 goto err_uar; 2647 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 2648 2649 ibdev->dev = dev; 2650 ibdev->bond_next_port = 0; 2651 2652 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 2653 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 2654 ibdev->num_ports = num_ports; 2655 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ? 2656 1 : ibdev->num_ports; 2657 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2658 ibdev->ib_dev.dev.parent = &dev->persist->pdev->dev; 2659 2660 ibdev->ib_dev.uverbs_cmd_mask = 2661 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 2662 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 2663 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 2664 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 2665 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 2666 (1ull << IB_USER_VERBS_CMD_REG_MR) | 2667 (1ull << IB_USER_VERBS_CMD_REREG_MR) | 2668 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 2669 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 2670 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 2671 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 2672 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 2673 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 2674 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 2675 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 2676 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 2677 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 2678 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 2679 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 2680 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 2681 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 2682 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 2683 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 2684 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 2685 2686 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops); 2687 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2688 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ) | 2689 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) | 2690 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) | 2691 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP); 2692 2693 if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) && 2694 ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) == 2695 IB_LINK_LAYER_ETHERNET) || 2696 (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) == 2697 IB_LINK_LAYER_ETHERNET))) { 2698 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2699 (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) | 2700 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) | 2701 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) | 2702 (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) | 2703 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL); 2704 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops); 2705 } 2706 2707 if (!mlx4_is_slave(ibdev->dev)) 2708 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fmr_ops); 2709 2710 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2711 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 2712 ibdev->ib_dev.uverbs_cmd_mask |= 2713 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 2714 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 2715 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops); 2716 } 2717 2718 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2719 ibdev->ib_dev.uverbs_cmd_mask |= 2720 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 2721 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 2722 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops); 2723 } 2724 2725 if (check_flow_steering_support(dev)) { 2726 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2727 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2728 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 2729 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 2730 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops); 2731 } 2732 2733 if (!dev->caps.userspace_caps) 2734 ibdev->ib_dev.ops.uverbs_abi_ver = 2735 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 2736 2737 mlx4_ib_alloc_eqs(dev, ibdev); 2738 2739 spin_lock_init(&iboe->lock); 2740 2741 if (init_node_data(ibdev)) 2742 goto err_map; 2743 mlx4_init_sl2vl_tbl(ibdev); 2744 2745 for (i = 0; i < ibdev->num_ports; ++i) { 2746 mutex_init(&ibdev->counters_table[i].mutex); 2747 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list); 2748 iboe->last_port_state[i] = IB_PORT_DOWN; 2749 } 2750 2751 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; 2752 for (i = 0; i < num_req_counters; ++i) { 2753 mutex_init(&ibdev->qp1_proxy_lock[i]); 2754 allocated = 0; 2755 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2756 IB_LINK_LAYER_ETHERNET) { 2757 err = mlx4_counter_alloc(ibdev->dev, &counter_index, 2758 MLX4_RES_USAGE_DRIVER); 2759 /* if failed to allocate a new counter, use default */ 2760 if (err) 2761 counter_index = 2762 mlx4_get_default_counter_index(dev, 2763 i + 1); 2764 else 2765 allocated = 1; 2766 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */ 2767 counter_index = mlx4_get_default_counter_index(dev, 2768 i + 1); 2769 } 2770 new_counter_index = kmalloc(sizeof(*new_counter_index), 2771 GFP_KERNEL); 2772 if (!new_counter_index) { 2773 if (allocated) 2774 mlx4_counter_free(ibdev->dev, counter_index); 2775 goto err_counter; 2776 } 2777 new_counter_index->index = counter_index; 2778 new_counter_index->allocated = allocated; 2779 list_add_tail(&new_counter_index->list, 2780 &ibdev->counters_table[i].counters_list); 2781 ibdev->counters_table[i].default_counter = counter_index; 2782 pr_info("counter index %d for port %d allocated %d\n", 2783 counter_index, i + 1, allocated); 2784 } 2785 if (mlx4_is_bonded(dev)) 2786 for (i = 1; i < ibdev->num_ports ; ++i) { 2787 new_counter_index = 2788 kmalloc(sizeof(struct counter_index), 2789 GFP_KERNEL); 2790 if (!new_counter_index) 2791 goto err_counter; 2792 new_counter_index->index = counter_index; 2793 new_counter_index->allocated = 0; 2794 list_add_tail(&new_counter_index->list, 2795 &ibdev->counters_table[i].counters_list); 2796 ibdev->counters_table[i].default_counter = 2797 counter_index; 2798 } 2799 2800 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2801 ib_num_ports++; 2802 2803 spin_lock_init(&ibdev->sm_lock); 2804 mutex_init(&ibdev->cap_mask_mutex); 2805 INIT_LIST_HEAD(&ibdev->qp_list); 2806 spin_lock_init(&ibdev->reset_flow_resource_lock); 2807 2808 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2809 ib_num_ports) { 2810 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2811 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2812 MLX4_IB_UC_STEER_QPN_ALIGN, 2813 &ibdev->steer_qpn_base, 0, 2814 MLX4_RES_USAGE_DRIVER); 2815 if (err) 2816 goto err_counter; 2817 2818 ibdev->ib_uc_qpns_bitmap = 2819 kmalloc_array(BITS_TO_LONGS(ibdev->steer_qpn_count), 2820 sizeof(long), 2821 GFP_KERNEL); 2822 if (!ibdev->ib_uc_qpns_bitmap) 2823 goto err_steer_qp_release; 2824 2825 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) { 2826 bitmap_zero(ibdev->ib_uc_qpns_bitmap, 2827 ibdev->steer_qpn_count); 2828 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2829 dev, ibdev->steer_qpn_base, 2830 ibdev->steer_qpn_base + 2831 ibdev->steer_qpn_count - 1); 2832 if (err) 2833 goto err_steer_free_bitmap; 2834 } else { 2835 bitmap_fill(ibdev->ib_uc_qpns_bitmap, 2836 ibdev->steer_qpn_count); 2837 } 2838 } 2839 2840 for (j = 1; j <= ibdev->dev->caps.num_ports; j++) 2841 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); 2842 2843 if (mlx4_ib_alloc_diag_counters(ibdev)) 2844 goto err_steer_free_bitmap; 2845 2846 rdma_set_device_sysfs_group(&ibdev->ib_dev, &mlx4_attr_group); 2847 if (ib_register_device(&ibdev->ib_dev, "mlx4_%d")) 2848 goto err_diag_counters; 2849 2850 if (mlx4_ib_mad_init(ibdev)) 2851 goto err_reg; 2852 2853 if (mlx4_ib_init_sriov(ibdev)) 2854 goto err_mad; 2855 2856 if (!iboe->nb.notifier_call) { 2857 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2858 err = register_netdevice_notifier(&iboe->nb); 2859 if (err) { 2860 iboe->nb.notifier_call = NULL; 2861 goto err_notif; 2862 } 2863 } 2864 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { 2865 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT); 2866 if (err) 2867 goto err_notif; 2868 } 2869 2870 ibdev->ib_active = true; 2871 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2872 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i), 2873 &ibdev->ib_dev); 2874 2875 if (mlx4_is_mfunc(ibdev->dev)) 2876 init_pkeys(ibdev); 2877 2878 /* create paravirt contexts for any VFs which are active */ 2879 if (mlx4_is_master(ibdev->dev)) { 2880 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2881 if (j == mlx4_master_func_num(ibdev->dev)) 2882 continue; 2883 if (mlx4_is_slave_active(ibdev->dev, j)) 2884 do_slave_init(ibdev, j, 1); 2885 } 2886 } 2887 return ibdev; 2888 2889 err_notif: 2890 if (ibdev->iboe.nb.notifier_call) { 2891 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2892 pr_warn("failure unregistering notifier\n"); 2893 ibdev->iboe.nb.notifier_call = NULL; 2894 } 2895 flush_workqueue(wq); 2896 2897 mlx4_ib_close_sriov(ibdev); 2898 2899 err_mad: 2900 mlx4_ib_mad_cleanup(ibdev); 2901 2902 err_reg: 2903 ib_unregister_device(&ibdev->ib_dev); 2904 2905 err_diag_counters: 2906 mlx4_ib_diag_cleanup(ibdev); 2907 2908 err_steer_free_bitmap: 2909 kfree(ibdev->ib_uc_qpns_bitmap); 2910 2911 err_steer_qp_release: 2912 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2913 ibdev->steer_qpn_count); 2914 err_counter: 2915 for (i = 0; i < ibdev->num_ports; ++i) 2916 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]); 2917 2918 err_map: 2919 mlx4_ib_free_eqs(dev, ibdev); 2920 iounmap(ibdev->uar_map); 2921 2922 err_uar: 2923 mlx4_uar_free(dev, &ibdev->priv_uar); 2924 2925 err_pd: 2926 mlx4_pd_free(dev, ibdev->priv_pdn); 2927 2928 err_dealloc: 2929 ib_dealloc_device(&ibdev->ib_dev); 2930 2931 return NULL; 2932 } 2933 2934 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2935 { 2936 int offset; 2937 2938 WARN_ON(!dev->ib_uc_qpns_bitmap); 2939 2940 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2941 dev->steer_qpn_count, 2942 get_count_order(count)); 2943 if (offset < 0) 2944 return offset; 2945 2946 *qpn = dev->steer_qpn_base + offset; 2947 return 0; 2948 } 2949 2950 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2951 { 2952 if (!qpn || 2953 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2954 return; 2955 2956 if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n", 2957 qpn, dev->steer_qpn_base)) 2958 /* not supposed to be here */ 2959 return; 2960 2961 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2962 qpn - dev->steer_qpn_base, 2963 get_count_order(count)); 2964 } 2965 2966 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2967 int is_attach) 2968 { 2969 int err; 2970 size_t flow_size; 2971 struct ib_flow_attr *flow = NULL; 2972 struct ib_flow_spec_ib *ib_spec; 2973 2974 if (is_attach) { 2975 flow_size = sizeof(struct ib_flow_attr) + 2976 sizeof(struct ib_flow_spec_ib); 2977 flow = kzalloc(flow_size, GFP_KERNEL); 2978 if (!flow) 2979 return -ENOMEM; 2980 flow->port = mqp->port; 2981 flow->num_of_specs = 1; 2982 flow->size = flow_size; 2983 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2984 ib_spec->type = IB_FLOW_SPEC_IB; 2985 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2986 /* Add an empty rule for IB L2 */ 2987 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2988 2989 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, 2990 IB_FLOW_DOMAIN_NIC, 2991 MLX4_FS_REGULAR, 2992 &mqp->reg_id); 2993 } else { 2994 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2995 } 2996 kfree(flow); 2997 return err; 2998 } 2999 3000 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 3001 { 3002 struct mlx4_ib_dev *ibdev = ibdev_ptr; 3003 int p; 3004 int i; 3005 3006 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 3007 devlink_port_type_clear(mlx4_get_devlink_port(dev, i)); 3008 ibdev->ib_active = false; 3009 flush_workqueue(wq); 3010 3011 mlx4_ib_close_sriov(ibdev); 3012 mlx4_ib_mad_cleanup(ibdev); 3013 ib_unregister_device(&ibdev->ib_dev); 3014 mlx4_ib_diag_cleanup(ibdev); 3015 if (ibdev->iboe.nb.notifier_call) { 3016 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 3017 pr_warn("failure unregistering notifier\n"); 3018 ibdev->iboe.nb.notifier_call = NULL; 3019 } 3020 3021 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 3022 ibdev->steer_qpn_count); 3023 kfree(ibdev->ib_uc_qpns_bitmap); 3024 3025 iounmap(ibdev->uar_map); 3026 for (p = 0; p < ibdev->num_ports; ++p) 3027 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]); 3028 3029 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 3030 mlx4_CLOSE_PORT(dev, p); 3031 3032 mlx4_ib_free_eqs(dev, ibdev); 3033 3034 mlx4_uar_free(dev, &ibdev->priv_uar); 3035 mlx4_pd_free(dev, ibdev->priv_pdn); 3036 ib_dealloc_device(&ibdev->ib_dev); 3037 } 3038 3039 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 3040 { 3041 struct mlx4_ib_demux_work **dm = NULL; 3042 struct mlx4_dev *dev = ibdev->dev; 3043 int i; 3044 unsigned long flags; 3045 struct mlx4_active_ports actv_ports; 3046 unsigned int ports; 3047 unsigned int first_port; 3048 3049 if (!mlx4_is_master(dev)) 3050 return; 3051 3052 actv_ports = mlx4_get_active_ports(dev, slave); 3053 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 3054 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 3055 3056 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); 3057 if (!dm) 3058 return; 3059 3060 for (i = 0; i < ports; i++) { 3061 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 3062 if (!dm[i]) { 3063 while (--i >= 0) 3064 kfree(dm[i]); 3065 goto out; 3066 } 3067 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 3068 dm[i]->port = first_port + i + 1; 3069 dm[i]->slave = slave; 3070 dm[i]->do_init = do_init; 3071 dm[i]->dev = ibdev; 3072 } 3073 /* initialize or tear down tunnel QPs for the slave */ 3074 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 3075 if (!ibdev->sriov.is_going_down) { 3076 for (i = 0; i < ports; i++) 3077 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 3078 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3079 } else { 3080 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3081 for (i = 0; i < ports; i++) 3082 kfree(dm[i]); 3083 } 3084 out: 3085 kfree(dm); 3086 return; 3087 } 3088 3089 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev) 3090 { 3091 struct mlx4_ib_qp *mqp; 3092 unsigned long flags_qp; 3093 unsigned long flags_cq; 3094 struct mlx4_ib_cq *send_mcq, *recv_mcq; 3095 struct list_head cq_notify_list; 3096 struct mlx4_cq *mcq; 3097 unsigned long flags; 3098 3099 pr_warn("mlx4_ib_handle_catas_error was started\n"); 3100 INIT_LIST_HEAD(&cq_notify_list); 3101 3102 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 3103 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 3104 3105 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 3106 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 3107 if (mqp->sq.tail != mqp->sq.head) { 3108 send_mcq = to_mcq(mqp->ibqp.send_cq); 3109 spin_lock_irqsave(&send_mcq->lock, flags_cq); 3110 if (send_mcq->mcq.comp && 3111 mqp->ibqp.send_cq->comp_handler) { 3112 if (!send_mcq->mcq.reset_notify_added) { 3113 send_mcq->mcq.reset_notify_added = 1; 3114 list_add_tail(&send_mcq->mcq.reset_notify, 3115 &cq_notify_list); 3116 } 3117 } 3118 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 3119 } 3120 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 3121 /* Now, handle the QP's receive queue */ 3122 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 3123 /* no handling is needed for SRQ */ 3124 if (!mqp->ibqp.srq) { 3125 if (mqp->rq.tail != mqp->rq.head) { 3126 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 3127 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 3128 if (recv_mcq->mcq.comp && 3129 mqp->ibqp.recv_cq->comp_handler) { 3130 if (!recv_mcq->mcq.reset_notify_added) { 3131 recv_mcq->mcq.reset_notify_added = 1; 3132 list_add_tail(&recv_mcq->mcq.reset_notify, 3133 &cq_notify_list); 3134 } 3135 } 3136 spin_unlock_irqrestore(&recv_mcq->lock, 3137 flags_cq); 3138 } 3139 } 3140 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 3141 } 3142 3143 list_for_each_entry(mcq, &cq_notify_list, reset_notify) { 3144 mcq->comp(mcq); 3145 } 3146 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 3147 pr_warn("mlx4_ib_handle_catas_error ended\n"); 3148 } 3149 3150 static void handle_bonded_port_state_event(struct work_struct *work) 3151 { 3152 struct ib_event_work *ew = 3153 container_of(work, struct ib_event_work, work); 3154 struct mlx4_ib_dev *ibdev = ew->ib_dev; 3155 enum ib_port_state bonded_port_state = IB_PORT_NOP; 3156 int i; 3157 struct ib_event ibev; 3158 3159 kfree(ew); 3160 spin_lock_bh(&ibdev->iboe.lock); 3161 for (i = 0; i < MLX4_MAX_PORTS; ++i) { 3162 struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; 3163 enum ib_port_state curr_port_state; 3164 3165 if (!curr_netdev) 3166 continue; 3167 3168 curr_port_state = 3169 (netif_running(curr_netdev) && 3170 netif_carrier_ok(curr_netdev)) ? 3171 IB_PORT_ACTIVE : IB_PORT_DOWN; 3172 3173 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ? 3174 curr_port_state : IB_PORT_ACTIVE; 3175 } 3176 spin_unlock_bh(&ibdev->iboe.lock); 3177 3178 ibev.device = &ibdev->ib_dev; 3179 ibev.element.port_num = 1; 3180 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ? 3181 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 3182 3183 ib_dispatch_event(&ibev); 3184 } 3185 3186 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port) 3187 { 3188 u64 sl2vl; 3189 int err; 3190 3191 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl); 3192 if (err) { 3193 pr_err("Unable to get current sl to vl mapping for port %d. Using all zeroes (%d)\n", 3194 port, err); 3195 sl2vl = 0; 3196 } 3197 atomic64_set(&mdev->sl2vl[port - 1], sl2vl); 3198 } 3199 3200 static void ib_sl2vl_update_work(struct work_struct *work) 3201 { 3202 struct ib_event_work *ew = container_of(work, struct ib_event_work, work); 3203 struct mlx4_ib_dev *mdev = ew->ib_dev; 3204 int port = ew->port; 3205 3206 mlx4_ib_sl2vl_update(mdev, port); 3207 3208 kfree(ew); 3209 } 3210 3211 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev, 3212 int port) 3213 { 3214 struct ib_event_work *ew; 3215 3216 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3217 if (ew) { 3218 INIT_WORK(&ew->work, ib_sl2vl_update_work); 3219 ew->port = port; 3220 ew->ib_dev = ibdev; 3221 queue_work(wq, &ew->work); 3222 } 3223 } 3224 3225 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 3226 enum mlx4_dev_event event, unsigned long param) 3227 { 3228 struct ib_event ibev; 3229 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 3230 struct mlx4_eqe *eqe = NULL; 3231 struct ib_event_work *ew; 3232 int p = 0; 3233 3234 if (mlx4_is_bonded(dev) && 3235 ((event == MLX4_DEV_EVENT_PORT_UP) || 3236 (event == MLX4_DEV_EVENT_PORT_DOWN))) { 3237 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3238 if (!ew) 3239 return; 3240 INIT_WORK(&ew->work, handle_bonded_port_state_event); 3241 ew->ib_dev = ibdev; 3242 queue_work(wq, &ew->work); 3243 return; 3244 } 3245 3246 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 3247 eqe = (struct mlx4_eqe *)param; 3248 else 3249 p = (int) param; 3250 3251 switch (event) { 3252 case MLX4_DEV_EVENT_PORT_UP: 3253 if (p > ibdev->num_ports) 3254 return; 3255 if (!mlx4_is_slave(dev) && 3256 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 3257 IB_LINK_LAYER_INFINIBAND) { 3258 if (mlx4_is_master(dev)) 3259 mlx4_ib_invalidate_all_guid_record(ibdev, p); 3260 if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST && 3261 !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT)) 3262 mlx4_sched_ib_sl2vl_update_work(ibdev, p); 3263 } 3264 ibev.event = IB_EVENT_PORT_ACTIVE; 3265 break; 3266 3267 case MLX4_DEV_EVENT_PORT_DOWN: 3268 if (p > ibdev->num_ports) 3269 return; 3270 ibev.event = IB_EVENT_PORT_ERR; 3271 break; 3272 3273 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 3274 ibdev->ib_active = false; 3275 ibev.event = IB_EVENT_DEVICE_FATAL; 3276 mlx4_ib_handle_catas_error(ibdev); 3277 break; 3278 3279 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 3280 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 3281 if (!ew) 3282 break; 3283 3284 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 3285 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 3286 ew->ib_dev = ibdev; 3287 /* need to queue only for port owner, which uses GEN_EQE */ 3288 if (mlx4_is_master(dev)) 3289 queue_work(wq, &ew->work); 3290 else 3291 handle_port_mgmt_change_event(&ew->work); 3292 return; 3293 3294 case MLX4_DEV_EVENT_SLAVE_INIT: 3295 /* here, p is the slave id */ 3296 do_slave_init(ibdev, p, 1); 3297 if (mlx4_is_master(dev)) { 3298 int i; 3299 3300 for (i = 1; i <= ibdev->num_ports; i++) { 3301 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3302 == IB_LINK_LAYER_INFINIBAND) 3303 mlx4_ib_slave_alias_guid_event(ibdev, 3304 p, i, 3305 1); 3306 } 3307 } 3308 return; 3309 3310 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 3311 if (mlx4_is_master(dev)) { 3312 int i; 3313 3314 for (i = 1; i <= ibdev->num_ports; i++) { 3315 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3316 == IB_LINK_LAYER_INFINIBAND) 3317 mlx4_ib_slave_alias_guid_event(ibdev, 3318 p, i, 3319 0); 3320 } 3321 } 3322 /* here, p is the slave id */ 3323 do_slave_init(ibdev, p, 0); 3324 return; 3325 3326 default: 3327 return; 3328 } 3329 3330 ibev.device = ibdev_ptr; 3331 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; 3332 3333 ib_dispatch_event(&ibev); 3334 } 3335 3336 static struct mlx4_interface mlx4_ib_interface = { 3337 .add = mlx4_ib_add, 3338 .remove = mlx4_ib_remove, 3339 .event = mlx4_ib_event, 3340 .protocol = MLX4_PROT_IB_IPV6, 3341 .flags = MLX4_INTFF_BONDING 3342 }; 3343 3344 static int __init mlx4_ib_init(void) 3345 { 3346 int err; 3347 3348 wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM); 3349 if (!wq) 3350 return -ENOMEM; 3351 3352 err = mlx4_ib_mcg_init(); 3353 if (err) 3354 goto clean_wq; 3355 3356 err = mlx4_register_interface(&mlx4_ib_interface); 3357 if (err) 3358 goto clean_mcg; 3359 3360 return 0; 3361 3362 clean_mcg: 3363 mlx4_ib_mcg_destroy(); 3364 3365 clean_wq: 3366 destroy_workqueue(wq); 3367 return err; 3368 } 3369 3370 static void __exit mlx4_ib_cleanup(void) 3371 { 3372 mlx4_unregister_interface(&mlx4_ib_interface); 3373 mlx4_ib_mcg_destroy(); 3374 destroy_workqueue(wq); 3375 } 3376 3377 module_init(mlx4_ib_init); 3378 module_exit(mlx4_ib_cleanup); 3379