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 ? 5 : 3; 738 } 739 740 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 741 struct ib_port_attr *props) 742 { 743 744 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 745 struct mlx4_ib_iboe *iboe = &mdev->iboe; 746 struct net_device *ndev; 747 enum ib_mtu tmp; 748 struct mlx4_cmd_mailbox *mailbox; 749 int err = 0; 750 int is_bonded = mlx4_is_bonded(mdev->dev); 751 752 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 753 if (IS_ERR(mailbox)) 754 return PTR_ERR(mailbox); 755 756 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 757 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 758 MLX4_CMD_WRAPPED); 759 if (err) 760 goto out; 761 762 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) || 763 (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ? 764 IB_WIDTH_4X : IB_WIDTH_1X; 765 props->active_speed = (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ? 766 IB_SPEED_FDR : IB_SPEED_QDR; 767 props->port_cap_flags = IB_PORT_CM_SUP; 768 props->ip_gids = true; 769 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 770 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 771 props->pkey_tbl_len = 1; 772 props->max_mtu = IB_MTU_4096; 773 props->max_vl_num = 2; 774 props->state = IB_PORT_DOWN; 775 props->phys_state = state_to_phys_state(props->state); 776 props->active_mtu = IB_MTU_256; 777 spin_lock_bh(&iboe->lock); 778 ndev = iboe->netdevs[port - 1]; 779 if (ndev && is_bonded) { 780 rcu_read_lock(); /* required to get upper dev */ 781 ndev = netdev_master_upper_dev_get_rcu(ndev); 782 rcu_read_unlock(); 783 } 784 if (!ndev) 785 goto out_unlock; 786 787 tmp = iboe_get_mtu(ndev->mtu); 788 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 789 790 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 791 IB_PORT_ACTIVE : IB_PORT_DOWN; 792 props->phys_state = state_to_phys_state(props->state); 793 out_unlock: 794 spin_unlock_bh(&iboe->lock); 795 out: 796 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 797 return err; 798 } 799 800 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 801 struct ib_port_attr *props, int netw_view) 802 { 803 int err; 804 805 /* props being zeroed by the caller, avoid zeroing it here */ 806 807 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 808 ib_link_query_port(ibdev, port, props, netw_view) : 809 eth_link_query_port(ibdev, port, props); 810 811 return err; 812 } 813 814 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 815 struct ib_port_attr *props) 816 { 817 /* returns host view */ 818 return __mlx4_ib_query_port(ibdev, port, props, 0); 819 } 820 821 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 822 union ib_gid *gid, int netw_view) 823 { 824 struct ib_smp *in_mad = NULL; 825 struct ib_smp *out_mad = NULL; 826 int err = -ENOMEM; 827 struct mlx4_ib_dev *dev = to_mdev(ibdev); 828 int clear = 0; 829 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 830 831 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 832 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 833 if (!in_mad || !out_mad) 834 goto out; 835 836 init_query_mad(in_mad); 837 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 838 in_mad->attr_mod = cpu_to_be32(port); 839 840 if (mlx4_is_mfunc(dev->dev) && netw_view) 841 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 842 843 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 844 if (err) 845 goto out; 846 847 memcpy(gid->raw, out_mad->data + 8, 8); 848 849 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 850 if (index) { 851 /* For any index > 0, return the null guid */ 852 err = 0; 853 clear = 1; 854 goto out; 855 } 856 } 857 858 init_query_mad(in_mad); 859 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 860 in_mad->attr_mod = cpu_to_be32(index / 8); 861 862 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 863 NULL, NULL, in_mad, out_mad); 864 if (err) 865 goto out; 866 867 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 868 869 out: 870 if (clear) 871 memset(gid->raw + 8, 0, 8); 872 kfree(in_mad); 873 kfree(out_mad); 874 return err; 875 } 876 877 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 878 union ib_gid *gid) 879 { 880 if (rdma_protocol_ib(ibdev, port)) 881 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 882 return 0; 883 } 884 885 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl) 886 { 887 union sl2vl_tbl_to_u64 sl2vl64; 888 struct ib_smp *in_mad = NULL; 889 struct ib_smp *out_mad = NULL; 890 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 891 int err = -ENOMEM; 892 int jj; 893 894 if (mlx4_is_slave(to_mdev(ibdev)->dev)) { 895 *sl2vl_tbl = 0; 896 return 0; 897 } 898 899 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 900 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 901 if (!in_mad || !out_mad) 902 goto out; 903 904 init_query_mad(in_mad); 905 in_mad->attr_id = IB_SMP_ATTR_SL_TO_VL_TABLE; 906 in_mad->attr_mod = 0; 907 908 if (mlx4_is_mfunc(to_mdev(ibdev)->dev)) 909 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 910 911 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 912 in_mad, out_mad); 913 if (err) 914 goto out; 915 916 for (jj = 0; jj < 8; jj++) 917 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj]; 918 *sl2vl_tbl = sl2vl64.sl64; 919 920 out: 921 kfree(in_mad); 922 kfree(out_mad); 923 return err; 924 } 925 926 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev) 927 { 928 u64 sl2vl; 929 int i; 930 int err; 931 932 for (i = 1; i <= mdev->dev->caps.num_ports; i++) { 933 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH) 934 continue; 935 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl); 936 if (err) { 937 pr_err("Unable to get default sl to vl mapping for port %d. Using all zeroes (%d)\n", 938 i, err); 939 sl2vl = 0; 940 } 941 atomic64_set(&mdev->sl2vl[i - 1], sl2vl); 942 } 943 } 944 945 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 946 u16 *pkey, int netw_view) 947 { 948 struct ib_smp *in_mad = NULL; 949 struct ib_smp *out_mad = NULL; 950 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 951 int err = -ENOMEM; 952 953 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 954 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 955 if (!in_mad || !out_mad) 956 goto out; 957 958 init_query_mad(in_mad); 959 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 960 in_mad->attr_mod = cpu_to_be32(index / 32); 961 962 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 963 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 964 965 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 966 in_mad, out_mad); 967 if (err) 968 goto out; 969 970 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 971 972 out: 973 kfree(in_mad); 974 kfree(out_mad); 975 return err; 976 } 977 978 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 979 { 980 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 981 } 982 983 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 984 struct ib_device_modify *props) 985 { 986 struct mlx4_cmd_mailbox *mailbox; 987 unsigned long flags; 988 989 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 990 return -EOPNOTSUPP; 991 992 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 993 return 0; 994 995 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 996 return -EOPNOTSUPP; 997 998 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 999 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1000 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 1001 1002 /* 1003 * If possible, pass node desc to FW, so it can generate 1004 * a 144 trap. If cmd fails, just ignore. 1005 */ 1006 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 1007 if (IS_ERR(mailbox)) 1008 return 0; 1009 1010 memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1011 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 1012 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 1013 1014 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 1015 1016 return 0; 1017 } 1018 1019 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 1020 u32 cap_mask) 1021 { 1022 struct mlx4_cmd_mailbox *mailbox; 1023 int err; 1024 1025 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 1026 if (IS_ERR(mailbox)) 1027 return PTR_ERR(mailbox); 1028 1029 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 1030 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 1031 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 1032 } else { 1033 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 1034 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 1035 } 1036 1037 err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE, 1038 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1039 MLX4_CMD_WRAPPED); 1040 1041 mlx4_free_cmd_mailbox(dev->dev, mailbox); 1042 return err; 1043 } 1044 1045 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 1046 struct ib_port_modify *props) 1047 { 1048 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 1049 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 1050 struct ib_port_attr attr; 1051 u32 cap_mask; 1052 int err; 1053 1054 /* return OK if this is RoCE. CM calls ib_modify_port() regardless 1055 * of whether port link layer is ETH or IB. For ETH ports, qkey 1056 * violations and port capabilities are not meaningful. 1057 */ 1058 if (is_eth) 1059 return 0; 1060 1061 mutex_lock(&mdev->cap_mask_mutex); 1062 1063 err = ib_query_port(ibdev, port, &attr); 1064 if (err) 1065 goto out; 1066 1067 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 1068 ~props->clr_port_cap_mask; 1069 1070 err = mlx4_ib_SET_PORT(mdev, port, 1071 !!(mask & IB_PORT_RESET_QKEY_CNTR), 1072 cap_mask); 1073 1074 out: 1075 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 1076 return err; 1077 } 1078 1079 static int mlx4_ib_alloc_ucontext(struct ib_ucontext *uctx, 1080 struct ib_udata *udata) 1081 { 1082 struct ib_device *ibdev = uctx->device; 1083 struct mlx4_ib_dev *dev = to_mdev(ibdev); 1084 struct mlx4_ib_ucontext *context = to_mucontext(uctx); 1085 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 1086 struct mlx4_ib_alloc_ucontext_resp resp; 1087 int err; 1088 1089 if (!dev->ib_active) 1090 return -EAGAIN; 1091 1092 if (ibdev->ops.uverbs_abi_ver == 1093 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 1094 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 1095 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 1096 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1097 } else { 1098 resp.dev_caps = dev->dev->caps.userspace_caps; 1099 resp.qp_tab_size = dev->dev->caps.num_qps; 1100 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 1101 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1102 resp.cqe_size = dev->dev->caps.cqe_size; 1103 } 1104 1105 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 1106 if (err) 1107 return err; 1108 1109 INIT_LIST_HEAD(&context->db_page_list); 1110 mutex_init(&context->db_page_mutex); 1111 1112 INIT_LIST_HEAD(&context->wqn_ranges_list); 1113 mutex_init(&context->wqn_ranges_mutex); 1114 1115 if (ibdev->ops.uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 1116 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 1117 else 1118 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1119 1120 if (err) { 1121 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 1122 return -EFAULT; 1123 } 1124 1125 return err; 1126 } 1127 1128 static void mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 1129 { 1130 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 1131 1132 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 1133 } 1134 1135 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) 1136 { 1137 } 1138 1139 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 1140 { 1141 struct mlx4_ib_dev *dev = to_mdev(context->device); 1142 1143 switch (vma->vm_pgoff) { 1144 case 0: 1145 return rdma_user_mmap_io(context, vma, 1146 to_mucontext(context)->uar.pfn, 1147 PAGE_SIZE, 1148 pgprot_noncached(vma->vm_page_prot)); 1149 1150 case 1: 1151 if (dev->dev->caps.bf_reg_size == 0) 1152 return -EINVAL; 1153 return rdma_user_mmap_io( 1154 context, vma, 1155 to_mucontext(context)->uar.pfn + 1156 dev->dev->caps.num_uars, 1157 PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot)); 1158 1159 case 3: { 1160 struct mlx4_clock_params params; 1161 int ret; 1162 1163 ret = mlx4_get_internal_clock_params(dev->dev, ¶ms); 1164 if (ret) 1165 return ret; 1166 1167 return rdma_user_mmap_io( 1168 context, vma, 1169 (pci_resource_start(dev->dev->persist->pdev, 1170 params.bar) + 1171 params.offset) >> 1172 PAGE_SHIFT, 1173 PAGE_SIZE, pgprot_noncached(vma->vm_page_prot)); 1174 } 1175 1176 default: 1177 return -EINVAL; 1178 } 1179 } 1180 1181 static int mlx4_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 1182 { 1183 struct mlx4_ib_pd *pd = to_mpd(ibpd); 1184 struct ib_device *ibdev = ibpd->device; 1185 int err; 1186 1187 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 1188 if (err) 1189 return err; 1190 1191 if (udata && ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) { 1192 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 1193 return -EFAULT; 1194 } 1195 return 0; 1196 } 1197 1198 static void mlx4_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 1199 { 1200 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 1201 } 1202 1203 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 1204 struct ib_udata *udata) 1205 { 1206 struct mlx4_ib_xrcd *xrcd; 1207 struct ib_cq_init_attr cq_attr = {}; 1208 int err; 1209 1210 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 1211 return ERR_PTR(-ENOSYS); 1212 1213 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 1214 if (!xrcd) 1215 return ERR_PTR(-ENOMEM); 1216 1217 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 1218 if (err) 1219 goto err1; 1220 1221 xrcd->pd = ib_alloc_pd(ibdev, 0); 1222 if (IS_ERR(xrcd->pd)) { 1223 err = PTR_ERR(xrcd->pd); 1224 goto err2; 1225 } 1226 1227 cq_attr.cqe = 1; 1228 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr); 1229 if (IS_ERR(xrcd->cq)) { 1230 err = PTR_ERR(xrcd->cq); 1231 goto err3; 1232 } 1233 1234 return &xrcd->ibxrcd; 1235 1236 err3: 1237 ib_dealloc_pd(xrcd->pd); 1238 err2: 1239 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 1240 err1: 1241 kfree(xrcd); 1242 return ERR_PTR(err); 1243 } 1244 1245 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata) 1246 { 1247 ib_destroy_cq(to_mxrcd(xrcd)->cq); 1248 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 1249 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 1250 kfree(xrcd); 1251 1252 return 0; 1253 } 1254 1255 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 1256 { 1257 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1258 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1259 struct mlx4_ib_gid_entry *ge; 1260 1261 ge = kzalloc(sizeof *ge, GFP_KERNEL); 1262 if (!ge) 1263 return -ENOMEM; 1264 1265 ge->gid = *gid; 1266 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 1267 ge->port = mqp->port; 1268 ge->added = 1; 1269 } 1270 1271 mutex_lock(&mqp->mutex); 1272 list_add_tail(&ge->list, &mqp->gid_list); 1273 mutex_unlock(&mqp->mutex); 1274 1275 return 0; 1276 } 1277 1278 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev, 1279 struct mlx4_ib_counters *ctr_table) 1280 { 1281 struct counter_index *counter, *tmp_count; 1282 1283 mutex_lock(&ctr_table->mutex); 1284 list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list, 1285 list) { 1286 if (counter->allocated) 1287 mlx4_counter_free(ibdev->dev, counter->index); 1288 list_del(&counter->list); 1289 kfree(counter); 1290 } 1291 mutex_unlock(&ctr_table->mutex); 1292 } 1293 1294 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 1295 union ib_gid *gid) 1296 { 1297 struct net_device *ndev; 1298 int ret = 0; 1299 1300 if (!mqp->port) 1301 return 0; 1302 1303 spin_lock_bh(&mdev->iboe.lock); 1304 ndev = mdev->iboe.netdevs[mqp->port - 1]; 1305 if (ndev) 1306 dev_hold(ndev); 1307 spin_unlock_bh(&mdev->iboe.lock); 1308 1309 if (ndev) { 1310 ret = 1; 1311 dev_put(ndev); 1312 } 1313 1314 return ret; 1315 } 1316 1317 struct mlx4_ib_steering { 1318 struct list_head list; 1319 struct mlx4_flow_reg_id reg_id; 1320 union ib_gid gid; 1321 }; 1322 1323 #define LAST_ETH_FIELD vlan_tag 1324 #define LAST_IB_FIELD sl 1325 #define LAST_IPV4_FIELD dst_ip 1326 #define LAST_TCP_UDP_FIELD src_port 1327 1328 /* Field is the last supported field */ 1329 #define FIELDS_NOT_SUPPORTED(filter, field)\ 1330 memchr_inv((void *)&filter.field +\ 1331 sizeof(filter.field), 0,\ 1332 sizeof(filter) -\ 1333 offsetof(typeof(filter), field) -\ 1334 sizeof(filter.field)) 1335 1336 static int parse_flow_attr(struct mlx4_dev *dev, 1337 u32 qp_num, 1338 union ib_flow_spec *ib_spec, 1339 struct _rule_hw *mlx4_spec) 1340 { 1341 enum mlx4_net_trans_rule_id type; 1342 1343 switch (ib_spec->type) { 1344 case IB_FLOW_SPEC_ETH: 1345 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) 1346 return -ENOTSUPP; 1347 1348 type = MLX4_NET_TRANS_RULE_ID_ETH; 1349 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 1350 ETH_ALEN); 1351 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 1352 ETH_ALEN); 1353 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 1354 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 1355 break; 1356 case IB_FLOW_SPEC_IB: 1357 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD)) 1358 return -ENOTSUPP; 1359 1360 type = MLX4_NET_TRANS_RULE_ID_IB; 1361 mlx4_spec->ib.l3_qpn = 1362 cpu_to_be32(qp_num); 1363 mlx4_spec->ib.qpn_mask = 1364 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 1365 break; 1366 1367 1368 case IB_FLOW_SPEC_IPV4: 1369 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) 1370 return -ENOTSUPP; 1371 1372 type = MLX4_NET_TRANS_RULE_ID_IPV4; 1373 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 1374 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 1375 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 1376 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 1377 break; 1378 1379 case IB_FLOW_SPEC_TCP: 1380 case IB_FLOW_SPEC_UDP: 1381 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) 1382 return -ENOTSUPP; 1383 1384 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 1385 MLX4_NET_TRANS_RULE_ID_TCP : 1386 MLX4_NET_TRANS_RULE_ID_UDP; 1387 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 1388 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 1389 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 1390 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 1391 break; 1392 1393 default: 1394 return -EINVAL; 1395 } 1396 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 1397 mlx4_hw_rule_sz(dev, type) < 0) 1398 return -EINVAL; 1399 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 1400 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 1401 return mlx4_hw_rule_sz(dev, type); 1402 } 1403 1404 struct default_rules { 1405 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1406 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1407 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1408 __u8 link_layer; 1409 }; 1410 static const struct default_rules default_table[] = { 1411 { 1412 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 1413 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 1414 .rules_create_list = {IB_FLOW_SPEC_IB}, 1415 .link_layer = IB_LINK_LAYER_INFINIBAND 1416 } 1417 }; 1418 1419 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 1420 struct ib_flow_attr *flow_attr) 1421 { 1422 int i, j, k; 1423 void *ib_flow; 1424 const struct default_rules *pdefault_rules = default_table; 1425 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 1426 1427 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 1428 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1429 memset(&field_types, 0, sizeof(field_types)); 1430 1431 if (link_layer != pdefault_rules->link_layer) 1432 continue; 1433 1434 ib_flow = flow_attr + 1; 1435 /* we assume the specs are sorted */ 1436 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 1437 j < flow_attr->num_of_specs; k++) { 1438 union ib_flow_spec *current_flow = 1439 (union ib_flow_spec *)ib_flow; 1440 1441 /* same layer but different type */ 1442 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 1443 (pdefault_rules->mandatory_fields[k] & 1444 IB_FLOW_SPEC_LAYER_MASK)) && 1445 (current_flow->type != 1446 pdefault_rules->mandatory_fields[k])) 1447 goto out; 1448 1449 /* same layer, try match next one */ 1450 if (current_flow->type == 1451 pdefault_rules->mandatory_fields[k]) { 1452 j++; 1453 ib_flow += 1454 ((union ib_flow_spec *)ib_flow)->size; 1455 } 1456 } 1457 1458 ib_flow = flow_attr + 1; 1459 for (j = 0; j < flow_attr->num_of_specs; 1460 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 1461 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 1462 /* same layer and same type */ 1463 if (((union ib_flow_spec *)ib_flow)->type == 1464 pdefault_rules->mandatory_not_fields[k]) 1465 goto out; 1466 1467 return i; 1468 } 1469 out: 1470 return -1; 1471 } 1472 1473 static int __mlx4_ib_create_default_rules( 1474 struct mlx4_ib_dev *mdev, 1475 struct ib_qp *qp, 1476 const struct default_rules *pdefault_rules, 1477 struct _rule_hw *mlx4_spec) { 1478 int size = 0; 1479 int i; 1480 1481 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 1482 int ret; 1483 union ib_flow_spec ib_spec; 1484 switch (pdefault_rules->rules_create_list[i]) { 1485 case 0: 1486 /* no rule */ 1487 continue; 1488 case IB_FLOW_SPEC_IB: 1489 ib_spec.type = IB_FLOW_SPEC_IB; 1490 ib_spec.size = sizeof(struct ib_flow_spec_ib); 1491 1492 break; 1493 default: 1494 /* invalid rule */ 1495 return -EINVAL; 1496 } 1497 /* We must put empty rule, qpn is being ignored */ 1498 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1499 mlx4_spec); 1500 if (ret < 0) { 1501 pr_info("invalid parsing\n"); 1502 return -EINVAL; 1503 } 1504 1505 mlx4_spec = (void *)mlx4_spec + ret; 1506 size += ret; 1507 } 1508 return size; 1509 } 1510 1511 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1512 int domain, 1513 enum mlx4_net_trans_promisc_mode flow_type, 1514 u64 *reg_id) 1515 { 1516 int ret, i; 1517 int size = 0; 1518 void *ib_flow; 1519 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1520 struct mlx4_cmd_mailbox *mailbox; 1521 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1522 int default_flow; 1523 1524 static const u16 __mlx4_domain[] = { 1525 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 1526 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 1527 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 1528 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 1529 }; 1530 1531 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1532 pr_err("Invalid priority value %d\n", flow_attr->priority); 1533 return -EINVAL; 1534 } 1535 1536 if (domain >= IB_FLOW_DOMAIN_NUM) { 1537 pr_err("Invalid domain value %d\n", domain); 1538 return -EINVAL; 1539 } 1540 1541 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1542 return -EINVAL; 1543 1544 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1545 if (IS_ERR(mailbox)) 1546 return PTR_ERR(mailbox); 1547 ctrl = mailbox->buf; 1548 1549 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 1550 flow_attr->priority); 1551 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1552 ctrl->port = flow_attr->port; 1553 ctrl->qpn = cpu_to_be32(qp->qp_num); 1554 1555 ib_flow = flow_attr + 1; 1556 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1557 /* Add default flows */ 1558 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1559 if (default_flow >= 0) { 1560 ret = __mlx4_ib_create_default_rules( 1561 mdev, qp, default_table + default_flow, 1562 mailbox->buf + size); 1563 if (ret < 0) { 1564 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1565 return -EINVAL; 1566 } 1567 size += ret; 1568 } 1569 for (i = 0; i < flow_attr->num_of_specs; i++) { 1570 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1571 mailbox->buf + size); 1572 if (ret < 0) { 1573 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1574 return -EINVAL; 1575 } 1576 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1577 size += ret; 1578 } 1579 1580 if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR && 1581 flow_attr->num_of_specs == 1) { 1582 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1); 1583 enum ib_flow_spec_type header_spec = 1584 ((union ib_flow_spec *)(flow_attr + 1))->type; 1585 1586 if (header_spec == IB_FLOW_SPEC_ETH) 1587 mlx4_handle_eth_header_mcast_prio(ctrl, rule_header); 1588 } 1589 1590 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1591 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1592 MLX4_CMD_NATIVE); 1593 if (ret == -ENOMEM) 1594 pr_err("mcg table is full. Fail to register network rule.\n"); 1595 else if (ret == -ENXIO) 1596 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1597 else if (ret) 1598 pr_err("Invalid argument. Fail to register network rule.\n"); 1599 1600 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1601 return ret; 1602 } 1603 1604 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1605 { 1606 int err; 1607 err = mlx4_cmd(dev, reg_id, 0, 0, 1608 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1609 MLX4_CMD_NATIVE); 1610 if (err) 1611 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1612 reg_id); 1613 return err; 1614 } 1615 1616 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1617 u64 *reg_id) 1618 { 1619 void *ib_flow; 1620 union ib_flow_spec *ib_spec; 1621 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1622 int err = 0; 1623 1624 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 1625 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 1626 return 0; /* do nothing */ 1627 1628 ib_flow = flow_attr + 1; 1629 ib_spec = (union ib_flow_spec *)ib_flow; 1630 1631 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1632 return 0; /* do nothing */ 1633 1634 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1635 flow_attr->port, qp->qp_num, 1636 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1637 reg_id); 1638 return err; 1639 } 1640 1641 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev, 1642 struct ib_flow_attr *flow_attr, 1643 enum mlx4_net_trans_promisc_mode *type) 1644 { 1645 int err = 0; 1646 1647 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) || 1648 (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) || 1649 (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) { 1650 return -EOPNOTSUPP; 1651 } 1652 1653 if (flow_attr->num_of_specs == 0) { 1654 type[0] = MLX4_FS_MC_SNIFFER; 1655 type[1] = MLX4_FS_UC_SNIFFER; 1656 } else { 1657 union ib_flow_spec *ib_spec; 1658 1659 ib_spec = (union ib_flow_spec *)(flow_attr + 1); 1660 if (ib_spec->type != IB_FLOW_SPEC_ETH) 1661 return -EINVAL; 1662 1663 /* if all is zero than MC and UC */ 1664 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) { 1665 type[0] = MLX4_FS_MC_SNIFFER; 1666 type[1] = MLX4_FS_UC_SNIFFER; 1667 } else { 1668 u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01, 1669 ib_spec->eth.mask.dst_mac[1], 1670 ib_spec->eth.mask.dst_mac[2], 1671 ib_spec->eth.mask.dst_mac[3], 1672 ib_spec->eth.mask.dst_mac[4], 1673 ib_spec->eth.mask.dst_mac[5]}; 1674 1675 /* Above xor was only on MC bit, non empty mask is valid 1676 * only if this bit is set and rest are zero. 1677 */ 1678 if (!is_zero_ether_addr(&mac[0])) 1679 return -EINVAL; 1680 1681 if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac)) 1682 type[0] = MLX4_FS_MC_SNIFFER; 1683 else 1684 type[0] = MLX4_FS_UC_SNIFFER; 1685 } 1686 } 1687 1688 return err; 1689 } 1690 1691 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1692 struct ib_flow_attr *flow_attr, 1693 int domain, struct ib_udata *udata) 1694 { 1695 int err = 0, i = 0, j = 0; 1696 struct mlx4_ib_flow *mflow; 1697 enum mlx4_net_trans_promisc_mode type[2]; 1698 struct mlx4_dev *dev = (to_mdev(qp->device))->dev; 1699 int is_bonded = mlx4_is_bonded(dev); 1700 1701 if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt) 1702 return ERR_PTR(-EINVAL); 1703 1704 if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP) 1705 return ERR_PTR(-EOPNOTSUPP); 1706 1707 if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 1708 (flow_attr->type != IB_FLOW_ATTR_NORMAL)) 1709 return ERR_PTR(-EOPNOTSUPP); 1710 1711 if (udata && 1712 udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen)) 1713 return ERR_PTR(-EOPNOTSUPP); 1714 1715 memset(type, 0, sizeof(type)); 1716 1717 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1718 if (!mflow) { 1719 err = -ENOMEM; 1720 goto err_free; 1721 } 1722 1723 switch (flow_attr->type) { 1724 case IB_FLOW_ATTR_NORMAL: 1725 /* If dont trap flag (continue match) is set, under specific 1726 * condition traffic be replicated to given qp, 1727 * without stealing it 1728 */ 1729 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) { 1730 err = mlx4_ib_add_dont_trap_rule(dev, 1731 flow_attr, 1732 type); 1733 if (err) 1734 goto err_free; 1735 } else { 1736 type[0] = MLX4_FS_REGULAR; 1737 } 1738 break; 1739 1740 case IB_FLOW_ATTR_ALL_DEFAULT: 1741 type[0] = MLX4_FS_ALL_DEFAULT; 1742 break; 1743 1744 case IB_FLOW_ATTR_MC_DEFAULT: 1745 type[0] = MLX4_FS_MC_DEFAULT; 1746 break; 1747 1748 case IB_FLOW_ATTR_SNIFFER: 1749 type[0] = MLX4_FS_MIRROR_RX_PORT; 1750 type[1] = MLX4_FS_MIRROR_SX_PORT; 1751 break; 1752 1753 default: 1754 err = -EINVAL; 1755 goto err_free; 1756 } 1757 1758 while (i < ARRAY_SIZE(type) && type[i]) { 1759 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 1760 &mflow->reg_id[i].id); 1761 if (err) 1762 goto err_create_flow; 1763 if (is_bonded) { 1764 /* Application always sees one port so the mirror rule 1765 * must be on port #2 1766 */ 1767 flow_attr->port = 2; 1768 err = __mlx4_ib_create_flow(qp, flow_attr, 1769 domain, type[j], 1770 &mflow->reg_id[j].mirror); 1771 flow_attr->port = 1; 1772 if (err) 1773 goto err_create_flow; 1774 j++; 1775 } 1776 1777 i++; 1778 } 1779 1780 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1781 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1782 &mflow->reg_id[i].id); 1783 if (err) 1784 goto err_create_flow; 1785 1786 if (is_bonded) { 1787 flow_attr->port = 2; 1788 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1789 &mflow->reg_id[j].mirror); 1790 flow_attr->port = 1; 1791 if (err) 1792 goto err_create_flow; 1793 j++; 1794 } 1795 /* function to create mirror rule */ 1796 i++; 1797 } 1798 1799 return &mflow->ibflow; 1800 1801 err_create_flow: 1802 while (i) { 1803 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1804 mflow->reg_id[i].id); 1805 i--; 1806 } 1807 1808 while (j) { 1809 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1810 mflow->reg_id[j].mirror); 1811 j--; 1812 } 1813 err_free: 1814 kfree(mflow); 1815 return ERR_PTR(err); 1816 } 1817 1818 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1819 { 1820 int err, ret = 0; 1821 int i = 0; 1822 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1823 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1824 1825 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { 1826 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); 1827 if (err) 1828 ret = err; 1829 if (mflow->reg_id[i].mirror) { 1830 err = __mlx4_ib_destroy_flow(mdev->dev, 1831 mflow->reg_id[i].mirror); 1832 if (err) 1833 ret = err; 1834 } 1835 i++; 1836 } 1837 1838 kfree(mflow); 1839 return ret; 1840 } 1841 1842 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1843 { 1844 int err; 1845 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1846 struct mlx4_dev *dev = mdev->dev; 1847 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1848 struct mlx4_ib_steering *ib_steering = NULL; 1849 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1850 struct mlx4_flow_reg_id reg_id; 1851 1852 if (mdev->dev->caps.steering_mode == 1853 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1854 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1855 if (!ib_steering) 1856 return -ENOMEM; 1857 } 1858 1859 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1860 !!(mqp->flags & 1861 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1862 prot, ®_id.id); 1863 if (err) { 1864 pr_err("multicast attach op failed, err %d\n", err); 1865 goto err_malloc; 1866 } 1867 1868 reg_id.mirror = 0; 1869 if (mlx4_is_bonded(dev)) { 1870 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 1871 (mqp->port == 1) ? 2 : 1, 1872 !!(mqp->flags & 1873 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1874 prot, ®_id.mirror); 1875 if (err) 1876 goto err_add; 1877 } 1878 1879 err = add_gid_entry(ibqp, gid); 1880 if (err) 1881 goto err_add; 1882 1883 if (ib_steering) { 1884 memcpy(ib_steering->gid.raw, gid->raw, 16); 1885 ib_steering->reg_id = reg_id; 1886 mutex_lock(&mqp->mutex); 1887 list_add(&ib_steering->list, &mqp->steering_rules); 1888 mutex_unlock(&mqp->mutex); 1889 } 1890 return 0; 1891 1892 err_add: 1893 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1894 prot, reg_id.id); 1895 if (reg_id.mirror) 1896 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1897 prot, reg_id.mirror); 1898 err_malloc: 1899 kfree(ib_steering); 1900 1901 return err; 1902 } 1903 1904 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1905 { 1906 struct mlx4_ib_gid_entry *ge; 1907 struct mlx4_ib_gid_entry *tmp; 1908 struct mlx4_ib_gid_entry *ret = NULL; 1909 1910 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1911 if (!memcmp(raw, ge->gid.raw, 16)) { 1912 ret = ge; 1913 break; 1914 } 1915 } 1916 1917 return ret; 1918 } 1919 1920 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1921 { 1922 int err; 1923 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1924 struct mlx4_dev *dev = mdev->dev; 1925 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1926 struct net_device *ndev; 1927 struct mlx4_ib_gid_entry *ge; 1928 struct mlx4_flow_reg_id reg_id = {0, 0}; 1929 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1930 1931 if (mdev->dev->caps.steering_mode == 1932 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1933 struct mlx4_ib_steering *ib_steering; 1934 1935 mutex_lock(&mqp->mutex); 1936 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1937 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1938 list_del(&ib_steering->list); 1939 break; 1940 } 1941 } 1942 mutex_unlock(&mqp->mutex); 1943 if (&ib_steering->list == &mqp->steering_rules) { 1944 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1945 return -EINVAL; 1946 } 1947 reg_id = ib_steering->reg_id; 1948 kfree(ib_steering); 1949 } 1950 1951 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1952 prot, reg_id.id); 1953 if (err) 1954 return err; 1955 1956 if (mlx4_is_bonded(dev)) { 1957 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1958 prot, reg_id.mirror); 1959 if (err) 1960 return err; 1961 } 1962 1963 mutex_lock(&mqp->mutex); 1964 ge = find_gid_entry(mqp, gid->raw); 1965 if (ge) { 1966 spin_lock_bh(&mdev->iboe.lock); 1967 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1968 if (ndev) 1969 dev_hold(ndev); 1970 spin_unlock_bh(&mdev->iboe.lock); 1971 if (ndev) 1972 dev_put(ndev); 1973 list_del(&ge->list); 1974 kfree(ge); 1975 } else 1976 pr_warn("could not find mgid entry\n"); 1977 1978 mutex_unlock(&mqp->mutex); 1979 1980 return 0; 1981 } 1982 1983 static int init_node_data(struct mlx4_ib_dev *dev) 1984 { 1985 struct ib_smp *in_mad = NULL; 1986 struct ib_smp *out_mad = NULL; 1987 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1988 int err = -ENOMEM; 1989 1990 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1991 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1992 if (!in_mad || !out_mad) 1993 goto out; 1994 1995 init_query_mad(in_mad); 1996 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1997 if (mlx4_is_master(dev->dev)) 1998 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1999 2000 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2001 if (err) 2002 goto out; 2003 2004 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 2005 2006 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 2007 2008 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2009 if (err) 2010 goto out; 2011 2012 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 2013 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 2014 2015 out: 2016 kfree(in_mad); 2017 kfree(out_mad); 2018 return err; 2019 } 2020 2021 static ssize_t hca_type_show(struct device *device, 2022 struct device_attribute *attr, char *buf) 2023 { 2024 struct mlx4_ib_dev *dev = 2025 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2026 return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device); 2027 } 2028 static DEVICE_ATTR_RO(hca_type); 2029 2030 static ssize_t hw_rev_show(struct device *device, 2031 struct device_attribute *attr, char *buf) 2032 { 2033 struct mlx4_ib_dev *dev = 2034 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2035 return sprintf(buf, "%x\n", dev->dev->rev_id); 2036 } 2037 static DEVICE_ATTR_RO(hw_rev); 2038 2039 static ssize_t board_id_show(struct device *device, 2040 struct device_attribute *attr, char *buf) 2041 { 2042 struct mlx4_ib_dev *dev = 2043 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2044 2045 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 2046 dev->dev->board_id); 2047 } 2048 static DEVICE_ATTR_RO(board_id); 2049 2050 static struct attribute *mlx4_class_attributes[] = { 2051 &dev_attr_hw_rev.attr, 2052 &dev_attr_hca_type.attr, 2053 &dev_attr_board_id.attr, 2054 NULL 2055 }; 2056 2057 static const struct attribute_group mlx4_attr_group = { 2058 .attrs = mlx4_class_attributes, 2059 }; 2060 2061 struct diag_counter { 2062 const char *name; 2063 u32 offset; 2064 }; 2065 2066 #define DIAG_COUNTER(_name, _offset) \ 2067 { .name = #_name, .offset = _offset } 2068 2069 static const struct diag_counter diag_basic[] = { 2070 DIAG_COUNTER(rq_num_lle, 0x00), 2071 DIAG_COUNTER(sq_num_lle, 0x04), 2072 DIAG_COUNTER(rq_num_lqpoe, 0x08), 2073 DIAG_COUNTER(sq_num_lqpoe, 0x0C), 2074 DIAG_COUNTER(rq_num_lpe, 0x18), 2075 DIAG_COUNTER(sq_num_lpe, 0x1C), 2076 DIAG_COUNTER(rq_num_wrfe, 0x20), 2077 DIAG_COUNTER(sq_num_wrfe, 0x24), 2078 DIAG_COUNTER(sq_num_mwbe, 0x2C), 2079 DIAG_COUNTER(sq_num_bre, 0x34), 2080 DIAG_COUNTER(sq_num_rire, 0x44), 2081 DIAG_COUNTER(rq_num_rire, 0x48), 2082 DIAG_COUNTER(sq_num_rae, 0x4C), 2083 DIAG_COUNTER(rq_num_rae, 0x50), 2084 DIAG_COUNTER(sq_num_roe, 0x54), 2085 DIAG_COUNTER(sq_num_tree, 0x5C), 2086 DIAG_COUNTER(sq_num_rree, 0x64), 2087 DIAG_COUNTER(rq_num_rnr, 0x68), 2088 DIAG_COUNTER(sq_num_rnr, 0x6C), 2089 DIAG_COUNTER(rq_num_oos, 0x100), 2090 DIAG_COUNTER(sq_num_oos, 0x104), 2091 }; 2092 2093 static const struct diag_counter diag_ext[] = { 2094 DIAG_COUNTER(rq_num_dup, 0x130), 2095 DIAG_COUNTER(sq_num_to, 0x134), 2096 }; 2097 2098 static const struct diag_counter diag_device_only[] = { 2099 DIAG_COUNTER(num_cqovf, 0x1A0), 2100 DIAG_COUNTER(rq_num_udsdprd, 0x118), 2101 }; 2102 2103 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev, 2104 u8 port_num) 2105 { 2106 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2107 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2108 2109 if (!diag[!!port_num].name) 2110 return NULL; 2111 2112 return rdma_alloc_hw_stats_struct(diag[!!port_num].name, 2113 diag[!!port_num].num_counters, 2114 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2115 } 2116 2117 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev, 2118 struct rdma_hw_stats *stats, 2119 u8 port, int index) 2120 { 2121 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2122 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2123 u32 hw_value[ARRAY_SIZE(diag_device_only) + 2124 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {}; 2125 int ret; 2126 int i; 2127 2128 ret = mlx4_query_diag_counters(dev->dev, 2129 MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS, 2130 diag[!!port].offset, hw_value, 2131 diag[!!port].num_counters, port); 2132 2133 if (ret) 2134 return ret; 2135 2136 for (i = 0; i < diag[!!port].num_counters; i++) 2137 stats->value[i] = hw_value[i]; 2138 2139 return diag[!!port].num_counters; 2140 } 2141 2142 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev, 2143 const char ***name, 2144 u32 **offset, 2145 u32 *num, 2146 bool port) 2147 { 2148 u32 num_counters; 2149 2150 num_counters = ARRAY_SIZE(diag_basic); 2151 2152 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) 2153 num_counters += ARRAY_SIZE(diag_ext); 2154 2155 if (!port) 2156 num_counters += ARRAY_SIZE(diag_device_only); 2157 2158 *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL); 2159 if (!*name) 2160 return -ENOMEM; 2161 2162 *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL); 2163 if (!*offset) 2164 goto err_name; 2165 2166 *num = num_counters; 2167 2168 return 0; 2169 2170 err_name: 2171 kfree(*name); 2172 return -ENOMEM; 2173 } 2174 2175 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev, 2176 const char **name, 2177 u32 *offset, 2178 bool port) 2179 { 2180 int i; 2181 int j; 2182 2183 for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) { 2184 name[i] = diag_basic[i].name; 2185 offset[i] = diag_basic[i].offset; 2186 } 2187 2188 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) { 2189 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) { 2190 name[j] = diag_ext[i].name; 2191 offset[j] = diag_ext[i].offset; 2192 } 2193 } 2194 2195 if (!port) { 2196 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) { 2197 name[j] = diag_device_only[i].name; 2198 offset[j] = diag_device_only[i].offset; 2199 } 2200 } 2201 } 2202 2203 static const struct ib_device_ops mlx4_ib_hw_stats_ops = { 2204 .alloc_hw_stats = mlx4_ib_alloc_hw_stats, 2205 .get_hw_stats = mlx4_ib_get_hw_stats, 2206 }; 2207 2208 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev) 2209 { 2210 struct mlx4_ib_diag_counters *diag = ibdev->diag_counters; 2211 int i; 2212 int ret; 2213 bool per_port = !!(ibdev->dev->caps.flags2 & 2214 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT); 2215 2216 if (mlx4_is_slave(ibdev->dev)) 2217 return 0; 2218 2219 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2220 /* i == 1 means we are building port counters */ 2221 if (i && !per_port) 2222 continue; 2223 2224 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name, 2225 &diag[i].offset, 2226 &diag[i].num_counters, i); 2227 if (ret) 2228 goto err_alloc; 2229 2230 mlx4_ib_fill_diag_counters(ibdev, diag[i].name, 2231 diag[i].offset, i); 2232 } 2233 2234 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops); 2235 2236 return 0; 2237 2238 err_alloc: 2239 if (i) { 2240 kfree(diag[i - 1].name); 2241 kfree(diag[i - 1].offset); 2242 } 2243 2244 return ret; 2245 } 2246 2247 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev) 2248 { 2249 int i; 2250 2251 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2252 kfree(ibdev->diag_counters[i].offset); 2253 kfree(ibdev->diag_counters[i].name); 2254 } 2255 } 2256 2257 #define MLX4_IB_INVALID_MAC ((u64)-1) 2258 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 2259 struct net_device *dev, 2260 int port) 2261 { 2262 u64 new_smac = 0; 2263 u64 release_mac = MLX4_IB_INVALID_MAC; 2264 struct mlx4_ib_qp *qp; 2265 2266 read_lock(&dev_base_lock); 2267 new_smac = mlx4_mac_to_u64(dev->dev_addr); 2268 read_unlock(&dev_base_lock); 2269 2270 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); 2271 2272 /* no need for update QP1 and mac registration in non-SRIOV */ 2273 if (!mlx4_is_mfunc(ibdev->dev)) 2274 return; 2275 2276 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 2277 qp = ibdev->qp1_proxy[port - 1]; 2278 if (qp) { 2279 int new_smac_index; 2280 u64 old_smac; 2281 struct mlx4_update_qp_params update_params; 2282 2283 mutex_lock(&qp->mutex); 2284 old_smac = qp->pri.smac; 2285 if (new_smac == old_smac) 2286 goto unlock; 2287 2288 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 2289 2290 if (new_smac_index < 0) 2291 goto unlock; 2292 2293 update_params.smac_index = new_smac_index; 2294 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, 2295 &update_params)) { 2296 release_mac = new_smac; 2297 goto unlock; 2298 } 2299 /* if old port was zero, no mac was yet registered for this QP */ 2300 if (qp->pri.smac_port) 2301 release_mac = old_smac; 2302 qp->pri.smac = new_smac; 2303 qp->pri.smac_port = port; 2304 qp->pri.smac_index = new_smac_index; 2305 } 2306 2307 unlock: 2308 if (release_mac != MLX4_IB_INVALID_MAC) 2309 mlx4_unregister_mac(ibdev->dev, port, release_mac); 2310 if (qp) 2311 mutex_unlock(&qp->mutex); 2312 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 2313 } 2314 2315 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, 2316 struct net_device *dev, 2317 unsigned long event) 2318 2319 { 2320 struct mlx4_ib_iboe *iboe; 2321 int update_qps_port = -1; 2322 int port; 2323 2324 ASSERT_RTNL(); 2325 2326 iboe = &ibdev->iboe; 2327 2328 spin_lock_bh(&iboe->lock); 2329 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 2330 2331 iboe->netdevs[port - 1] = 2332 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 2333 2334 if (dev == iboe->netdevs[port - 1] && 2335 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || 2336 event == NETDEV_UP || event == NETDEV_CHANGE)) 2337 update_qps_port = port; 2338 2339 if (dev == iboe->netdevs[port - 1] && 2340 (event == NETDEV_UP || event == NETDEV_DOWN)) { 2341 enum ib_port_state port_state; 2342 struct ib_event ibev = { }; 2343 2344 if (ib_get_cached_port_state(&ibdev->ib_dev, port, 2345 &port_state)) 2346 continue; 2347 2348 if (event == NETDEV_UP && 2349 (port_state != IB_PORT_ACTIVE || 2350 iboe->last_port_state[port - 1] != IB_PORT_DOWN)) 2351 continue; 2352 if (event == NETDEV_DOWN && 2353 (port_state != IB_PORT_DOWN || 2354 iboe->last_port_state[port - 1] != IB_PORT_ACTIVE)) 2355 continue; 2356 iboe->last_port_state[port - 1] = port_state; 2357 2358 ibev.device = &ibdev->ib_dev; 2359 ibev.element.port_num = port; 2360 ibev.event = event == NETDEV_UP ? IB_EVENT_PORT_ACTIVE : 2361 IB_EVENT_PORT_ERR; 2362 ib_dispatch_event(&ibev); 2363 } 2364 2365 } 2366 spin_unlock_bh(&iboe->lock); 2367 2368 if (update_qps_port > 0) 2369 mlx4_ib_update_qps(ibdev, dev, update_qps_port); 2370 } 2371 2372 static int mlx4_ib_netdev_event(struct notifier_block *this, 2373 unsigned long event, void *ptr) 2374 { 2375 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 2376 struct mlx4_ib_dev *ibdev; 2377 2378 if (!net_eq(dev_net(dev), &init_net)) 2379 return NOTIFY_DONE; 2380 2381 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 2382 mlx4_ib_scan_netdevs(ibdev, dev, event); 2383 2384 return NOTIFY_DONE; 2385 } 2386 2387 static void init_pkeys(struct mlx4_ib_dev *ibdev) 2388 { 2389 int port; 2390 int slave; 2391 int i; 2392 2393 if (mlx4_is_master(ibdev->dev)) { 2394 for (slave = 0; slave <= ibdev->dev->persist->num_vfs; 2395 ++slave) { 2396 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2397 for (i = 0; 2398 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2399 ++i) { 2400 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 2401 /* master has the identity virt2phys pkey mapping */ 2402 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 2403 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 2404 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 2405 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 2406 } 2407 } 2408 } 2409 /* initialize pkey cache */ 2410 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2411 for (i = 0; 2412 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2413 ++i) 2414 ibdev->pkeys.phys_pkey_cache[port-1][i] = 2415 (i) ? 0 : 0xFFFF; 2416 } 2417 } 2418 } 2419 2420 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2421 { 2422 int i, j, eq = 0, total_eqs = 0; 2423 2424 ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors, 2425 sizeof(ibdev->eq_table[0]), GFP_KERNEL); 2426 if (!ibdev->eq_table) 2427 return; 2428 2429 for (i = 1; i <= dev->caps.num_ports; i++) { 2430 for (j = 0; j < mlx4_get_eqs_per_port(dev, i); 2431 j++, total_eqs++) { 2432 if (i > 1 && mlx4_is_eq_shared(dev, total_eqs)) 2433 continue; 2434 ibdev->eq_table[eq] = total_eqs; 2435 if (!mlx4_assign_eq(dev, i, 2436 &ibdev->eq_table[eq])) 2437 eq++; 2438 else 2439 ibdev->eq_table[eq] = -1; 2440 } 2441 } 2442 2443 for (i = eq; i < dev->caps.num_comp_vectors; 2444 ibdev->eq_table[i++] = -1) 2445 ; 2446 2447 /* Advertise the new number of EQs to clients */ 2448 ibdev->ib_dev.num_comp_vectors = eq; 2449 } 2450 2451 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2452 { 2453 int i; 2454 int total_eqs = ibdev->ib_dev.num_comp_vectors; 2455 2456 /* no eqs were allocated */ 2457 if (!ibdev->eq_table) 2458 return; 2459 2460 /* Reset the advertised EQ number */ 2461 ibdev->ib_dev.num_comp_vectors = 0; 2462 2463 for (i = 0; i < total_eqs; i++) 2464 mlx4_release_eq(dev, ibdev->eq_table[i]); 2465 2466 kfree(ibdev->eq_table); 2467 ibdev->eq_table = NULL; 2468 } 2469 2470 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num, 2471 struct ib_port_immutable *immutable) 2472 { 2473 struct ib_port_attr attr; 2474 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 2475 int err; 2476 2477 if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) { 2478 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 2479 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2480 } else { 2481 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) 2482 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 2483 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 2484 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE | 2485 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2486 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET; 2487 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE | 2488 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP)) 2489 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2490 } 2491 2492 err = ib_query_port(ibdev, port_num, &attr); 2493 if (err) 2494 return err; 2495 2496 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2497 immutable->gid_tbl_len = attr.gid_tbl_len; 2498 2499 return 0; 2500 } 2501 2502 static void get_fw_ver_str(struct ib_device *device, char *str) 2503 { 2504 struct mlx4_ib_dev *dev = 2505 container_of(device, struct mlx4_ib_dev, ib_dev); 2506 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d", 2507 (int) (dev->dev->caps.fw_ver >> 32), 2508 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 2509 (int) dev->dev->caps.fw_ver & 0xffff); 2510 } 2511 2512 static const struct ib_device_ops mlx4_ib_dev_ops = { 2513 .owner = THIS_MODULE, 2514 .driver_id = RDMA_DRIVER_MLX4, 2515 .uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION, 2516 2517 .add_gid = mlx4_ib_add_gid, 2518 .alloc_mr = mlx4_ib_alloc_mr, 2519 .alloc_pd = mlx4_ib_alloc_pd, 2520 .alloc_ucontext = mlx4_ib_alloc_ucontext, 2521 .attach_mcast = mlx4_ib_mcg_attach, 2522 .create_ah = mlx4_ib_create_ah, 2523 .create_cq = mlx4_ib_create_cq, 2524 .create_qp = mlx4_ib_create_qp, 2525 .create_srq = mlx4_ib_create_srq, 2526 .dealloc_pd = mlx4_ib_dealloc_pd, 2527 .dealloc_ucontext = mlx4_ib_dealloc_ucontext, 2528 .del_gid = mlx4_ib_del_gid, 2529 .dereg_mr = mlx4_ib_dereg_mr, 2530 .destroy_ah = mlx4_ib_destroy_ah, 2531 .destroy_cq = mlx4_ib_destroy_cq, 2532 .destroy_qp = mlx4_ib_destroy_qp, 2533 .destroy_srq = mlx4_ib_destroy_srq, 2534 .detach_mcast = mlx4_ib_mcg_detach, 2535 .disassociate_ucontext = mlx4_ib_disassociate_ucontext, 2536 .drain_rq = mlx4_ib_drain_rq, 2537 .drain_sq = mlx4_ib_drain_sq, 2538 .get_dev_fw_str = get_fw_ver_str, 2539 .get_dma_mr = mlx4_ib_get_dma_mr, 2540 .get_link_layer = mlx4_ib_port_link_layer, 2541 .get_netdev = mlx4_ib_get_netdev, 2542 .get_port_immutable = mlx4_port_immutable, 2543 .map_mr_sg = mlx4_ib_map_mr_sg, 2544 .mmap = mlx4_ib_mmap, 2545 .modify_cq = mlx4_ib_modify_cq, 2546 .modify_device = mlx4_ib_modify_device, 2547 .modify_port = mlx4_ib_modify_port, 2548 .modify_qp = mlx4_ib_modify_qp, 2549 .modify_srq = mlx4_ib_modify_srq, 2550 .poll_cq = mlx4_ib_poll_cq, 2551 .post_recv = mlx4_ib_post_recv, 2552 .post_send = mlx4_ib_post_send, 2553 .post_srq_recv = mlx4_ib_post_srq_recv, 2554 .process_mad = mlx4_ib_process_mad, 2555 .query_ah = mlx4_ib_query_ah, 2556 .query_device = mlx4_ib_query_device, 2557 .query_gid = mlx4_ib_query_gid, 2558 .query_pkey = mlx4_ib_query_pkey, 2559 .query_port = mlx4_ib_query_port, 2560 .query_qp = mlx4_ib_query_qp, 2561 .query_srq = mlx4_ib_query_srq, 2562 .reg_user_mr = mlx4_ib_reg_user_mr, 2563 .req_notify_cq = mlx4_ib_arm_cq, 2564 .rereg_user_mr = mlx4_ib_rereg_user_mr, 2565 .resize_cq = mlx4_ib_resize_cq, 2566 2567 INIT_RDMA_OBJ_SIZE(ib_ah, mlx4_ib_ah, ibah), 2568 INIT_RDMA_OBJ_SIZE(ib_cq, mlx4_ib_cq, ibcq), 2569 INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd), 2570 INIT_RDMA_OBJ_SIZE(ib_srq, mlx4_ib_srq, ibsrq), 2571 INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext), 2572 }; 2573 2574 static const struct ib_device_ops mlx4_ib_dev_wq_ops = { 2575 .create_rwq_ind_table = mlx4_ib_create_rwq_ind_table, 2576 .create_wq = mlx4_ib_create_wq, 2577 .destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table, 2578 .destroy_wq = mlx4_ib_destroy_wq, 2579 .modify_wq = mlx4_ib_modify_wq, 2580 }; 2581 2582 static const struct ib_device_ops mlx4_ib_dev_fmr_ops = { 2583 .alloc_fmr = mlx4_ib_fmr_alloc, 2584 .dealloc_fmr = mlx4_ib_fmr_dealloc, 2585 .map_phys_fmr = mlx4_ib_map_phys_fmr, 2586 .unmap_fmr = mlx4_ib_unmap_fmr, 2587 }; 2588 2589 static const struct ib_device_ops mlx4_ib_dev_mw_ops = { 2590 .alloc_mw = mlx4_ib_alloc_mw, 2591 .dealloc_mw = mlx4_ib_dealloc_mw, 2592 }; 2593 2594 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = { 2595 .alloc_xrcd = mlx4_ib_alloc_xrcd, 2596 .dealloc_xrcd = mlx4_ib_dealloc_xrcd, 2597 }; 2598 2599 static const struct ib_device_ops mlx4_ib_dev_fs_ops = { 2600 .create_flow = mlx4_ib_create_flow, 2601 .destroy_flow = mlx4_ib_destroy_flow, 2602 }; 2603 2604 static void *mlx4_ib_add(struct mlx4_dev *dev) 2605 { 2606 struct mlx4_ib_dev *ibdev; 2607 int num_ports = 0; 2608 int i, j; 2609 int err; 2610 struct mlx4_ib_iboe *iboe; 2611 int ib_num_ports = 0; 2612 int num_req_counters; 2613 int allocated; 2614 u32 counter_index; 2615 struct counter_index *new_counter_index = NULL; 2616 2617 pr_info_once("%s", mlx4_ib_version); 2618 2619 num_ports = 0; 2620 mlx4_foreach_ib_transport_port(i, dev) 2621 num_ports++; 2622 2623 /* No point in registering a device with no ports... */ 2624 if (num_ports == 0) 2625 return NULL; 2626 2627 ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev); 2628 if (!ibdev) { 2629 dev_err(&dev->persist->pdev->dev, 2630 "Device struct alloc failed\n"); 2631 return NULL; 2632 } 2633 2634 iboe = &ibdev->iboe; 2635 2636 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 2637 goto err_dealloc; 2638 2639 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 2640 goto err_pd; 2641 2642 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 2643 PAGE_SIZE); 2644 if (!ibdev->uar_map) 2645 goto err_uar; 2646 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 2647 2648 ibdev->dev = dev; 2649 ibdev->bond_next_port = 0; 2650 2651 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 2652 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 2653 ibdev->num_ports = num_ports; 2654 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ? 2655 1 : ibdev->num_ports; 2656 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2657 ibdev->ib_dev.dev.parent = &dev->persist->pdev->dev; 2658 2659 ibdev->ib_dev.uverbs_cmd_mask = 2660 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 2661 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 2662 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 2663 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 2664 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 2665 (1ull << IB_USER_VERBS_CMD_REG_MR) | 2666 (1ull << IB_USER_VERBS_CMD_REREG_MR) | 2667 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 2668 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 2669 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 2670 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 2671 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 2672 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 2673 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 2674 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 2675 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 2676 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 2677 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 2678 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 2679 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 2680 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 2681 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 2682 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 2683 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 2684 2685 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops); 2686 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2687 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ) | 2688 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) | 2689 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) | 2690 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP); 2691 2692 if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) && 2693 ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) == 2694 IB_LINK_LAYER_ETHERNET) || 2695 (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) == 2696 IB_LINK_LAYER_ETHERNET))) { 2697 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2698 (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) | 2699 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) | 2700 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) | 2701 (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) | 2702 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL); 2703 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops); 2704 } 2705 2706 if (!mlx4_is_slave(ibdev->dev)) 2707 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fmr_ops); 2708 2709 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2710 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 2711 ibdev->ib_dev.uverbs_cmd_mask |= 2712 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 2713 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 2714 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops); 2715 } 2716 2717 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2718 ibdev->ib_dev.uverbs_cmd_mask |= 2719 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 2720 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 2721 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops); 2722 } 2723 2724 if (check_flow_steering_support(dev)) { 2725 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2726 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2727 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 2728 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 2729 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops); 2730 } 2731 2732 if (!dev->caps.userspace_caps) 2733 ibdev->ib_dev.ops.uverbs_abi_ver = 2734 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 2735 2736 mlx4_ib_alloc_eqs(dev, ibdev); 2737 2738 spin_lock_init(&iboe->lock); 2739 2740 if (init_node_data(ibdev)) 2741 goto err_map; 2742 mlx4_init_sl2vl_tbl(ibdev); 2743 2744 for (i = 0; i < ibdev->num_ports; ++i) { 2745 mutex_init(&ibdev->counters_table[i].mutex); 2746 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list); 2747 iboe->last_port_state[i] = IB_PORT_DOWN; 2748 } 2749 2750 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; 2751 for (i = 0; i < num_req_counters; ++i) { 2752 mutex_init(&ibdev->qp1_proxy_lock[i]); 2753 allocated = 0; 2754 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2755 IB_LINK_LAYER_ETHERNET) { 2756 err = mlx4_counter_alloc(ibdev->dev, &counter_index, 2757 MLX4_RES_USAGE_DRIVER); 2758 /* if failed to allocate a new counter, use default */ 2759 if (err) 2760 counter_index = 2761 mlx4_get_default_counter_index(dev, 2762 i + 1); 2763 else 2764 allocated = 1; 2765 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */ 2766 counter_index = mlx4_get_default_counter_index(dev, 2767 i + 1); 2768 } 2769 new_counter_index = kmalloc(sizeof(*new_counter_index), 2770 GFP_KERNEL); 2771 if (!new_counter_index) { 2772 if (allocated) 2773 mlx4_counter_free(ibdev->dev, counter_index); 2774 goto err_counter; 2775 } 2776 new_counter_index->index = counter_index; 2777 new_counter_index->allocated = allocated; 2778 list_add_tail(&new_counter_index->list, 2779 &ibdev->counters_table[i].counters_list); 2780 ibdev->counters_table[i].default_counter = counter_index; 2781 pr_info("counter index %d for port %d allocated %d\n", 2782 counter_index, i + 1, allocated); 2783 } 2784 if (mlx4_is_bonded(dev)) 2785 for (i = 1; i < ibdev->num_ports ; ++i) { 2786 new_counter_index = 2787 kmalloc(sizeof(struct counter_index), 2788 GFP_KERNEL); 2789 if (!new_counter_index) 2790 goto err_counter; 2791 new_counter_index->index = counter_index; 2792 new_counter_index->allocated = 0; 2793 list_add_tail(&new_counter_index->list, 2794 &ibdev->counters_table[i].counters_list); 2795 ibdev->counters_table[i].default_counter = 2796 counter_index; 2797 } 2798 2799 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2800 ib_num_ports++; 2801 2802 spin_lock_init(&ibdev->sm_lock); 2803 mutex_init(&ibdev->cap_mask_mutex); 2804 INIT_LIST_HEAD(&ibdev->qp_list); 2805 spin_lock_init(&ibdev->reset_flow_resource_lock); 2806 2807 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2808 ib_num_ports) { 2809 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2810 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2811 MLX4_IB_UC_STEER_QPN_ALIGN, 2812 &ibdev->steer_qpn_base, 0, 2813 MLX4_RES_USAGE_DRIVER); 2814 if (err) 2815 goto err_counter; 2816 2817 ibdev->ib_uc_qpns_bitmap = 2818 kmalloc_array(BITS_TO_LONGS(ibdev->steer_qpn_count), 2819 sizeof(long), 2820 GFP_KERNEL); 2821 if (!ibdev->ib_uc_qpns_bitmap) 2822 goto err_steer_qp_release; 2823 2824 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) { 2825 bitmap_zero(ibdev->ib_uc_qpns_bitmap, 2826 ibdev->steer_qpn_count); 2827 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2828 dev, ibdev->steer_qpn_base, 2829 ibdev->steer_qpn_base + 2830 ibdev->steer_qpn_count - 1); 2831 if (err) 2832 goto err_steer_free_bitmap; 2833 } else { 2834 bitmap_fill(ibdev->ib_uc_qpns_bitmap, 2835 ibdev->steer_qpn_count); 2836 } 2837 } 2838 2839 for (j = 1; j <= ibdev->dev->caps.num_ports; j++) 2840 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); 2841 2842 if (mlx4_ib_alloc_diag_counters(ibdev)) 2843 goto err_steer_free_bitmap; 2844 2845 rdma_set_device_sysfs_group(&ibdev->ib_dev, &mlx4_attr_group); 2846 if (ib_register_device(&ibdev->ib_dev, "mlx4_%d")) 2847 goto err_diag_counters; 2848 2849 if (mlx4_ib_mad_init(ibdev)) 2850 goto err_reg; 2851 2852 if (mlx4_ib_init_sriov(ibdev)) 2853 goto err_mad; 2854 2855 if (!iboe->nb.notifier_call) { 2856 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2857 err = register_netdevice_notifier(&iboe->nb); 2858 if (err) { 2859 iboe->nb.notifier_call = NULL; 2860 goto err_notif; 2861 } 2862 } 2863 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { 2864 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT); 2865 if (err) 2866 goto err_notif; 2867 } 2868 2869 ibdev->ib_active = true; 2870 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2871 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i), 2872 &ibdev->ib_dev); 2873 2874 if (mlx4_is_mfunc(ibdev->dev)) 2875 init_pkeys(ibdev); 2876 2877 /* create paravirt contexts for any VFs which are active */ 2878 if (mlx4_is_master(ibdev->dev)) { 2879 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2880 if (j == mlx4_master_func_num(ibdev->dev)) 2881 continue; 2882 if (mlx4_is_slave_active(ibdev->dev, j)) 2883 do_slave_init(ibdev, j, 1); 2884 } 2885 } 2886 return ibdev; 2887 2888 err_notif: 2889 if (ibdev->iboe.nb.notifier_call) { 2890 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2891 pr_warn("failure unregistering notifier\n"); 2892 ibdev->iboe.nb.notifier_call = NULL; 2893 } 2894 flush_workqueue(wq); 2895 2896 mlx4_ib_close_sriov(ibdev); 2897 2898 err_mad: 2899 mlx4_ib_mad_cleanup(ibdev); 2900 2901 err_reg: 2902 ib_unregister_device(&ibdev->ib_dev); 2903 2904 err_diag_counters: 2905 mlx4_ib_diag_cleanup(ibdev); 2906 2907 err_steer_free_bitmap: 2908 kfree(ibdev->ib_uc_qpns_bitmap); 2909 2910 err_steer_qp_release: 2911 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2912 ibdev->steer_qpn_count); 2913 err_counter: 2914 for (i = 0; i < ibdev->num_ports; ++i) 2915 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]); 2916 2917 err_map: 2918 mlx4_ib_free_eqs(dev, ibdev); 2919 iounmap(ibdev->uar_map); 2920 2921 err_uar: 2922 mlx4_uar_free(dev, &ibdev->priv_uar); 2923 2924 err_pd: 2925 mlx4_pd_free(dev, ibdev->priv_pdn); 2926 2927 err_dealloc: 2928 ib_dealloc_device(&ibdev->ib_dev); 2929 2930 return NULL; 2931 } 2932 2933 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2934 { 2935 int offset; 2936 2937 WARN_ON(!dev->ib_uc_qpns_bitmap); 2938 2939 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2940 dev->steer_qpn_count, 2941 get_count_order(count)); 2942 if (offset < 0) 2943 return offset; 2944 2945 *qpn = dev->steer_qpn_base + offset; 2946 return 0; 2947 } 2948 2949 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2950 { 2951 if (!qpn || 2952 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2953 return; 2954 2955 if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n", 2956 qpn, dev->steer_qpn_base)) 2957 /* not supposed to be here */ 2958 return; 2959 2960 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2961 qpn - dev->steer_qpn_base, 2962 get_count_order(count)); 2963 } 2964 2965 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2966 int is_attach) 2967 { 2968 int err; 2969 size_t flow_size; 2970 struct ib_flow_attr *flow = NULL; 2971 struct ib_flow_spec_ib *ib_spec; 2972 2973 if (is_attach) { 2974 flow_size = sizeof(struct ib_flow_attr) + 2975 sizeof(struct ib_flow_spec_ib); 2976 flow = kzalloc(flow_size, GFP_KERNEL); 2977 if (!flow) 2978 return -ENOMEM; 2979 flow->port = mqp->port; 2980 flow->num_of_specs = 1; 2981 flow->size = flow_size; 2982 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2983 ib_spec->type = IB_FLOW_SPEC_IB; 2984 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2985 /* Add an empty rule for IB L2 */ 2986 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2987 2988 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, 2989 IB_FLOW_DOMAIN_NIC, 2990 MLX4_FS_REGULAR, 2991 &mqp->reg_id); 2992 } else { 2993 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2994 } 2995 kfree(flow); 2996 return err; 2997 } 2998 2999 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 3000 { 3001 struct mlx4_ib_dev *ibdev = ibdev_ptr; 3002 int p; 3003 int i; 3004 3005 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 3006 devlink_port_type_clear(mlx4_get_devlink_port(dev, i)); 3007 ibdev->ib_active = false; 3008 flush_workqueue(wq); 3009 3010 mlx4_ib_close_sriov(ibdev); 3011 mlx4_ib_mad_cleanup(ibdev); 3012 ib_unregister_device(&ibdev->ib_dev); 3013 mlx4_ib_diag_cleanup(ibdev); 3014 if (ibdev->iboe.nb.notifier_call) { 3015 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 3016 pr_warn("failure unregistering notifier\n"); 3017 ibdev->iboe.nb.notifier_call = NULL; 3018 } 3019 3020 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 3021 ibdev->steer_qpn_count); 3022 kfree(ibdev->ib_uc_qpns_bitmap); 3023 3024 iounmap(ibdev->uar_map); 3025 for (p = 0; p < ibdev->num_ports; ++p) 3026 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]); 3027 3028 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 3029 mlx4_CLOSE_PORT(dev, p); 3030 3031 mlx4_ib_free_eqs(dev, ibdev); 3032 3033 mlx4_uar_free(dev, &ibdev->priv_uar); 3034 mlx4_pd_free(dev, ibdev->priv_pdn); 3035 ib_dealloc_device(&ibdev->ib_dev); 3036 } 3037 3038 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 3039 { 3040 struct mlx4_ib_demux_work **dm = NULL; 3041 struct mlx4_dev *dev = ibdev->dev; 3042 int i; 3043 unsigned long flags; 3044 struct mlx4_active_ports actv_ports; 3045 unsigned int ports; 3046 unsigned int first_port; 3047 3048 if (!mlx4_is_master(dev)) 3049 return; 3050 3051 actv_ports = mlx4_get_active_ports(dev, slave); 3052 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 3053 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 3054 3055 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); 3056 if (!dm) 3057 return; 3058 3059 for (i = 0; i < ports; i++) { 3060 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 3061 if (!dm[i]) { 3062 while (--i >= 0) 3063 kfree(dm[i]); 3064 goto out; 3065 } 3066 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 3067 dm[i]->port = first_port + i + 1; 3068 dm[i]->slave = slave; 3069 dm[i]->do_init = do_init; 3070 dm[i]->dev = ibdev; 3071 } 3072 /* initialize or tear down tunnel QPs for the slave */ 3073 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 3074 if (!ibdev->sriov.is_going_down) { 3075 for (i = 0; i < ports; i++) 3076 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 3077 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3078 } else { 3079 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3080 for (i = 0; i < ports; i++) 3081 kfree(dm[i]); 3082 } 3083 out: 3084 kfree(dm); 3085 return; 3086 } 3087 3088 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev) 3089 { 3090 struct mlx4_ib_qp *mqp; 3091 unsigned long flags_qp; 3092 unsigned long flags_cq; 3093 struct mlx4_ib_cq *send_mcq, *recv_mcq; 3094 struct list_head cq_notify_list; 3095 struct mlx4_cq *mcq; 3096 unsigned long flags; 3097 3098 pr_warn("mlx4_ib_handle_catas_error was started\n"); 3099 INIT_LIST_HEAD(&cq_notify_list); 3100 3101 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 3102 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 3103 3104 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 3105 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 3106 if (mqp->sq.tail != mqp->sq.head) { 3107 send_mcq = to_mcq(mqp->ibqp.send_cq); 3108 spin_lock_irqsave(&send_mcq->lock, flags_cq); 3109 if (send_mcq->mcq.comp && 3110 mqp->ibqp.send_cq->comp_handler) { 3111 if (!send_mcq->mcq.reset_notify_added) { 3112 send_mcq->mcq.reset_notify_added = 1; 3113 list_add_tail(&send_mcq->mcq.reset_notify, 3114 &cq_notify_list); 3115 } 3116 } 3117 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 3118 } 3119 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 3120 /* Now, handle the QP's receive queue */ 3121 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 3122 /* no handling is needed for SRQ */ 3123 if (!mqp->ibqp.srq) { 3124 if (mqp->rq.tail != mqp->rq.head) { 3125 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 3126 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 3127 if (recv_mcq->mcq.comp && 3128 mqp->ibqp.recv_cq->comp_handler) { 3129 if (!recv_mcq->mcq.reset_notify_added) { 3130 recv_mcq->mcq.reset_notify_added = 1; 3131 list_add_tail(&recv_mcq->mcq.reset_notify, 3132 &cq_notify_list); 3133 } 3134 } 3135 spin_unlock_irqrestore(&recv_mcq->lock, 3136 flags_cq); 3137 } 3138 } 3139 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 3140 } 3141 3142 list_for_each_entry(mcq, &cq_notify_list, reset_notify) { 3143 mcq->comp(mcq); 3144 } 3145 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 3146 pr_warn("mlx4_ib_handle_catas_error ended\n"); 3147 } 3148 3149 static void handle_bonded_port_state_event(struct work_struct *work) 3150 { 3151 struct ib_event_work *ew = 3152 container_of(work, struct ib_event_work, work); 3153 struct mlx4_ib_dev *ibdev = ew->ib_dev; 3154 enum ib_port_state bonded_port_state = IB_PORT_NOP; 3155 int i; 3156 struct ib_event ibev; 3157 3158 kfree(ew); 3159 spin_lock_bh(&ibdev->iboe.lock); 3160 for (i = 0; i < MLX4_MAX_PORTS; ++i) { 3161 struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; 3162 enum ib_port_state curr_port_state; 3163 3164 if (!curr_netdev) 3165 continue; 3166 3167 curr_port_state = 3168 (netif_running(curr_netdev) && 3169 netif_carrier_ok(curr_netdev)) ? 3170 IB_PORT_ACTIVE : IB_PORT_DOWN; 3171 3172 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ? 3173 curr_port_state : IB_PORT_ACTIVE; 3174 } 3175 spin_unlock_bh(&ibdev->iboe.lock); 3176 3177 ibev.device = &ibdev->ib_dev; 3178 ibev.element.port_num = 1; 3179 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ? 3180 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 3181 3182 ib_dispatch_event(&ibev); 3183 } 3184 3185 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port) 3186 { 3187 u64 sl2vl; 3188 int err; 3189 3190 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl); 3191 if (err) { 3192 pr_err("Unable to get current sl to vl mapping for port %d. Using all zeroes (%d)\n", 3193 port, err); 3194 sl2vl = 0; 3195 } 3196 atomic64_set(&mdev->sl2vl[port - 1], sl2vl); 3197 } 3198 3199 static void ib_sl2vl_update_work(struct work_struct *work) 3200 { 3201 struct ib_event_work *ew = container_of(work, struct ib_event_work, work); 3202 struct mlx4_ib_dev *mdev = ew->ib_dev; 3203 int port = ew->port; 3204 3205 mlx4_ib_sl2vl_update(mdev, port); 3206 3207 kfree(ew); 3208 } 3209 3210 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev, 3211 int port) 3212 { 3213 struct ib_event_work *ew; 3214 3215 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3216 if (ew) { 3217 INIT_WORK(&ew->work, ib_sl2vl_update_work); 3218 ew->port = port; 3219 ew->ib_dev = ibdev; 3220 queue_work(wq, &ew->work); 3221 } 3222 } 3223 3224 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 3225 enum mlx4_dev_event event, unsigned long param) 3226 { 3227 struct ib_event ibev; 3228 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 3229 struct mlx4_eqe *eqe = NULL; 3230 struct ib_event_work *ew; 3231 int p = 0; 3232 3233 if (mlx4_is_bonded(dev) && 3234 ((event == MLX4_DEV_EVENT_PORT_UP) || 3235 (event == MLX4_DEV_EVENT_PORT_DOWN))) { 3236 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3237 if (!ew) 3238 return; 3239 INIT_WORK(&ew->work, handle_bonded_port_state_event); 3240 ew->ib_dev = ibdev; 3241 queue_work(wq, &ew->work); 3242 return; 3243 } 3244 3245 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 3246 eqe = (struct mlx4_eqe *)param; 3247 else 3248 p = (int) param; 3249 3250 switch (event) { 3251 case MLX4_DEV_EVENT_PORT_UP: 3252 if (p > ibdev->num_ports) 3253 return; 3254 if (!mlx4_is_slave(dev) && 3255 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 3256 IB_LINK_LAYER_INFINIBAND) { 3257 if (mlx4_is_master(dev)) 3258 mlx4_ib_invalidate_all_guid_record(ibdev, p); 3259 if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST && 3260 !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT)) 3261 mlx4_sched_ib_sl2vl_update_work(ibdev, p); 3262 } 3263 ibev.event = IB_EVENT_PORT_ACTIVE; 3264 break; 3265 3266 case MLX4_DEV_EVENT_PORT_DOWN: 3267 if (p > ibdev->num_ports) 3268 return; 3269 ibev.event = IB_EVENT_PORT_ERR; 3270 break; 3271 3272 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 3273 ibdev->ib_active = false; 3274 ibev.event = IB_EVENT_DEVICE_FATAL; 3275 mlx4_ib_handle_catas_error(ibdev); 3276 break; 3277 3278 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 3279 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 3280 if (!ew) 3281 break; 3282 3283 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 3284 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 3285 ew->ib_dev = ibdev; 3286 /* need to queue only for port owner, which uses GEN_EQE */ 3287 if (mlx4_is_master(dev)) 3288 queue_work(wq, &ew->work); 3289 else 3290 handle_port_mgmt_change_event(&ew->work); 3291 return; 3292 3293 case MLX4_DEV_EVENT_SLAVE_INIT: 3294 /* here, p is the slave id */ 3295 do_slave_init(ibdev, p, 1); 3296 if (mlx4_is_master(dev)) { 3297 int i; 3298 3299 for (i = 1; i <= ibdev->num_ports; i++) { 3300 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3301 == IB_LINK_LAYER_INFINIBAND) 3302 mlx4_ib_slave_alias_guid_event(ibdev, 3303 p, i, 3304 1); 3305 } 3306 } 3307 return; 3308 3309 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 3310 if (mlx4_is_master(dev)) { 3311 int i; 3312 3313 for (i = 1; i <= ibdev->num_ports; i++) { 3314 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3315 == IB_LINK_LAYER_INFINIBAND) 3316 mlx4_ib_slave_alias_guid_event(ibdev, 3317 p, i, 3318 0); 3319 } 3320 } 3321 /* here, p is the slave id */ 3322 do_slave_init(ibdev, p, 0); 3323 return; 3324 3325 default: 3326 return; 3327 } 3328 3329 ibev.device = ibdev_ptr; 3330 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; 3331 3332 ib_dispatch_event(&ibev); 3333 } 3334 3335 static struct mlx4_interface mlx4_ib_interface = { 3336 .add = mlx4_ib_add, 3337 .remove = mlx4_ib_remove, 3338 .event = mlx4_ib_event, 3339 .protocol = MLX4_PROT_IB_IPV6, 3340 .flags = MLX4_INTFF_BONDING 3341 }; 3342 3343 static int __init mlx4_ib_init(void) 3344 { 3345 int err; 3346 3347 wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM); 3348 if (!wq) 3349 return -ENOMEM; 3350 3351 err = mlx4_ib_mcg_init(); 3352 if (err) 3353 goto clean_wq; 3354 3355 err = mlx4_register_interface(&mlx4_ib_interface); 3356 if (err) 3357 goto clean_mcg; 3358 3359 return 0; 3360 3361 clean_mcg: 3362 mlx4_ib_mcg_destroy(); 3363 3364 clean_wq: 3365 destroy_workqueue(wq); 3366 return err; 3367 } 3368 3369 static void __exit mlx4_ib_cleanup(void) 3370 { 3371 mlx4_unregister_interface(&mlx4_ib_interface); 3372 mlx4_ib_mcg_destroy(); 3373 destroy_workqueue(wq); 3374 } 3375 3376 module_init(mlx4_ib_init); 3377 module_exit(mlx4_ib_cleanup); 3378