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 u32 port_num); 85 86 static struct workqueue_struct *wq; 87 88 static int check_flow_steering_support(struct mlx4_dev *dev) 89 { 90 int eth_num_ports = 0; 91 int ib_num_ports = 0; 92 93 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; 94 95 if (dmfs) { 96 int i; 97 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 98 eth_num_ports++; 99 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 100 ib_num_ports++; 101 dmfs &= (!ib_num_ports || 102 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && 103 (!eth_num_ports || 104 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); 105 if (ib_num_ports && mlx4_is_mfunc(dev)) { 106 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); 107 dmfs = 0; 108 } 109 } 110 return dmfs; 111 } 112 113 static int num_ib_ports(struct mlx4_dev *dev) 114 { 115 int ib_ports = 0; 116 int i; 117 118 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 119 ib_ports++; 120 121 return ib_ports; 122 } 123 124 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, 125 u32 port_num) 126 { 127 struct mlx4_ib_dev *ibdev = to_mdev(device); 128 struct net_device *dev; 129 130 rcu_read_lock(); 131 dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num); 132 133 if (dev) { 134 if (mlx4_is_bonded(ibdev->dev)) { 135 struct net_device *upper = NULL; 136 137 upper = netdev_master_upper_dev_get_rcu(dev); 138 if (upper) { 139 struct net_device *active; 140 141 active = bond_option_active_slave_get_rcu(netdev_priv(upper)); 142 if (active) 143 dev = active; 144 } 145 } 146 } 147 if (dev) 148 dev_hold(dev); 149 150 rcu_read_unlock(); 151 return dev; 152 } 153 154 static int mlx4_ib_update_gids_v1(struct gid_entry *gids, 155 struct mlx4_ib_dev *ibdev, 156 u32 port_num) 157 { 158 struct mlx4_cmd_mailbox *mailbox; 159 int err; 160 struct mlx4_dev *dev = ibdev->dev; 161 int i; 162 union ib_gid *gid_tbl; 163 164 mailbox = mlx4_alloc_cmd_mailbox(dev); 165 if (IS_ERR(mailbox)) 166 return -ENOMEM; 167 168 gid_tbl = mailbox->buf; 169 170 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 171 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid)); 172 173 err = mlx4_cmd(dev, mailbox->dma, 174 MLX4_SET_PORT_GID_TABLE << 8 | port_num, 175 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 176 MLX4_CMD_WRAPPED); 177 if (mlx4_is_bonded(dev)) 178 err += mlx4_cmd(dev, mailbox->dma, 179 MLX4_SET_PORT_GID_TABLE << 8 | 2, 180 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 181 MLX4_CMD_WRAPPED); 182 183 mlx4_free_cmd_mailbox(dev, mailbox); 184 return err; 185 } 186 187 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids, 188 struct mlx4_ib_dev *ibdev, 189 u32 port_num) 190 { 191 struct mlx4_cmd_mailbox *mailbox; 192 int err; 193 struct mlx4_dev *dev = ibdev->dev; 194 int i; 195 struct { 196 union ib_gid gid; 197 __be32 rsrvd1[2]; 198 __be16 rsrvd2; 199 u8 type; 200 u8 version; 201 __be32 rsrvd3; 202 } *gid_tbl; 203 204 mailbox = mlx4_alloc_cmd_mailbox(dev); 205 if (IS_ERR(mailbox)) 206 return -ENOMEM; 207 208 gid_tbl = mailbox->buf; 209 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 210 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid)); 211 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { 212 gid_tbl[i].version = 2; 213 if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid)) 214 gid_tbl[i].type = 1; 215 } 216 } 217 218 err = mlx4_cmd(dev, mailbox->dma, 219 MLX4_SET_PORT_ROCE_ADDR << 8 | port_num, 220 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 221 MLX4_CMD_WRAPPED); 222 if (mlx4_is_bonded(dev)) 223 err += mlx4_cmd(dev, mailbox->dma, 224 MLX4_SET_PORT_ROCE_ADDR << 8 | 2, 225 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 226 MLX4_CMD_WRAPPED); 227 228 mlx4_free_cmd_mailbox(dev, mailbox); 229 return err; 230 } 231 232 static int mlx4_ib_update_gids(struct gid_entry *gids, 233 struct mlx4_ib_dev *ibdev, 234 u32 port_num) 235 { 236 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 237 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num); 238 239 return mlx4_ib_update_gids_v1(gids, ibdev, port_num); 240 } 241 242 static void free_gid_entry(struct gid_entry *entry) 243 { 244 memset(&entry->gid, 0, sizeof(entry->gid)); 245 kfree(entry->ctx); 246 entry->ctx = NULL; 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 u16 vlan_id = 0xffff; 260 u8 mac[ETH_ALEN]; 261 262 if (!rdma_cap_roce_gid_table(attr->device, attr->port_num)) 263 return -EINVAL; 264 265 if (attr->port_num > MLX4_MAX_PORTS) 266 return -EINVAL; 267 268 if (!context) 269 return -EINVAL; 270 271 ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]); 272 if (ret) 273 return ret; 274 port_gid_table = &iboe->gids[attr->port_num - 1]; 275 spin_lock_bh(&iboe->lock); 276 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 277 if (!memcmp(&port_gid_table->gids[i].gid, 278 &attr->gid, sizeof(attr->gid)) && 279 port_gid_table->gids[i].gid_type == attr->gid_type && 280 port_gid_table->gids[i].vlan_id == vlan_id) { 281 found = i; 282 break; 283 } 284 if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid)) 285 free = i; /* HW has space */ 286 } 287 288 if (found < 0) { 289 if (free < 0) { 290 ret = -ENOSPC; 291 } else { 292 port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC); 293 if (!port_gid_table->gids[free].ctx) { 294 ret = -ENOMEM; 295 } else { 296 *context = port_gid_table->gids[free].ctx; 297 memcpy(&port_gid_table->gids[free].gid, 298 &attr->gid, sizeof(attr->gid)); 299 port_gid_table->gids[free].gid_type = attr->gid_type; 300 port_gid_table->gids[free].vlan_id = vlan_id; 301 port_gid_table->gids[free].ctx->real_index = free; 302 port_gid_table->gids[free].ctx->refcount = 1; 303 hw_update = 1; 304 } 305 } 306 } else { 307 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx; 308 *context = ctx; 309 ctx->refcount++; 310 } 311 if (!ret && hw_update) { 312 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids), 313 GFP_ATOMIC); 314 if (!gids) { 315 ret = -ENOMEM; 316 *context = NULL; 317 free_gid_entry(&port_gid_table->gids[free]); 318 } else { 319 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 320 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid)); 321 gids[i].gid_type = port_gid_table->gids[i].gid_type; 322 } 323 } 324 } 325 spin_unlock_bh(&iboe->lock); 326 327 if (!ret && hw_update) { 328 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num); 329 if (ret) { 330 spin_lock_bh(&iboe->lock); 331 *context = NULL; 332 free_gid_entry(&port_gid_table->gids[free]); 333 spin_unlock_bh(&iboe->lock); 334 } 335 kfree(gids); 336 } 337 338 return ret; 339 } 340 341 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context) 342 { 343 struct gid_cache_context *ctx = *context; 344 struct mlx4_ib_dev *ibdev = to_mdev(attr->device); 345 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 346 struct mlx4_port_gid_table *port_gid_table; 347 int ret = 0; 348 int hw_update = 0; 349 struct gid_entry *gids = NULL; 350 351 if (!rdma_cap_roce_gid_table(attr->device, attr->port_num)) 352 return -EINVAL; 353 354 if (attr->port_num > MLX4_MAX_PORTS) 355 return -EINVAL; 356 357 port_gid_table = &iboe->gids[attr->port_num - 1]; 358 spin_lock_bh(&iboe->lock); 359 if (ctx) { 360 ctx->refcount--; 361 if (!ctx->refcount) { 362 unsigned int real_index = ctx->real_index; 363 364 free_gid_entry(&port_gid_table->gids[real_index]); 365 hw_update = 1; 366 } 367 } 368 if (!ret && hw_update) { 369 int i; 370 371 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids), 372 GFP_ATOMIC); 373 if (!gids) { 374 ret = -ENOMEM; 375 } else { 376 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 377 memcpy(&gids[i].gid, 378 &port_gid_table->gids[i].gid, 379 sizeof(union ib_gid)); 380 gids[i].gid_type = 381 port_gid_table->gids[i].gid_type; 382 } 383 } 384 } 385 spin_unlock_bh(&iboe->lock); 386 387 if (!ret && hw_update) { 388 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num); 389 kfree(gids); 390 } 391 return ret; 392 } 393 394 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev, 395 const struct ib_gid_attr *attr) 396 { 397 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 398 struct gid_cache_context *ctx = NULL; 399 struct mlx4_port_gid_table *port_gid_table; 400 int real_index = -EINVAL; 401 int i; 402 unsigned long flags; 403 u32 port_num = attr->port_num; 404 405 if (port_num > MLX4_MAX_PORTS) 406 return -EINVAL; 407 408 if (mlx4_is_bonded(ibdev->dev)) 409 port_num = 1; 410 411 if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num)) 412 return attr->index; 413 414 spin_lock_irqsave(&iboe->lock, flags); 415 port_gid_table = &iboe->gids[port_num - 1]; 416 417 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 418 if (!memcmp(&port_gid_table->gids[i].gid, 419 &attr->gid, sizeof(attr->gid)) && 420 attr->gid_type == port_gid_table->gids[i].gid_type) { 421 ctx = port_gid_table->gids[i].ctx; 422 break; 423 } 424 if (ctx) 425 real_index = ctx->real_index; 426 spin_unlock_irqrestore(&iboe->lock, flags); 427 return real_index; 428 } 429 430 static int mlx4_ib_query_device(struct ib_device *ibdev, 431 struct ib_device_attr *props, 432 struct ib_udata *uhw) 433 { 434 struct mlx4_ib_dev *dev = to_mdev(ibdev); 435 struct ib_smp *in_mad = NULL; 436 struct ib_smp *out_mad = NULL; 437 int err; 438 int have_ib_ports; 439 struct mlx4_uverbs_ex_query_device cmd; 440 struct mlx4_uverbs_ex_query_device_resp resp = {}; 441 struct mlx4_clock_params clock_params; 442 443 if (uhw->inlen) { 444 if (uhw->inlen < sizeof(cmd)) 445 return -EINVAL; 446 447 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd)); 448 if (err) 449 return err; 450 451 if (cmd.comp_mask) 452 return -EINVAL; 453 454 if (cmd.reserved) 455 return -EINVAL; 456 } 457 458 resp.response_length = offsetof(typeof(resp), response_length) + 459 sizeof(resp.response_length); 460 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 461 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 462 err = -ENOMEM; 463 if (!in_mad || !out_mad) 464 goto out; 465 466 ib_init_query_mad(in_mad); 467 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 468 469 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 470 1, NULL, NULL, in_mad, out_mad); 471 if (err) 472 goto out; 473 474 memset(props, 0, sizeof *props); 475 476 have_ib_ports = num_ib_ports(dev->dev); 477 478 props->fw_ver = dev->dev->caps.fw_ver; 479 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 480 IB_DEVICE_PORT_ACTIVE_EVENT | 481 IB_DEVICE_SYS_IMAGE_GUID | 482 IB_DEVICE_RC_RNR_NAK_GEN; 483 props->kernel_cap_flags = IBK_BLOCK_MULTICAST_LOOPBACK; 484 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 485 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 486 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 487 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 488 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports) 489 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 490 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 491 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 492 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 493 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 494 if (dev->dev->caps.max_gso_sz && 495 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) && 496 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)) 497 props->kernel_cap_flags |= IBK_UD_TSO; 498 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 499 props->kernel_cap_flags |= IBK_LOCAL_DMA_LKEY; 500 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 501 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 502 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 503 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 504 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 505 props->device_cap_flags |= IB_DEVICE_XRC; 506 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) 507 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; 508 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 509 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) 510 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 511 else 512 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; 513 } 514 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 515 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 516 517 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; 518 519 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 520 0xffffff; 521 props->vendor_part_id = dev->dev->persist->pdev->device; 522 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 523 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 524 525 props->max_mr_size = ~0ull; 526 props->page_size_cap = dev->dev->caps.page_size_cap; 527 props->max_qp = dev->dev->quotas.qp; 528 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 529 props->max_send_sge = 530 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg); 531 props->max_recv_sge = 532 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg); 533 props->max_sge_rd = MLX4_MAX_SGE_RD; 534 props->max_cq = dev->dev->quotas.cq; 535 props->max_cqe = dev->dev->caps.max_cqes; 536 props->max_mr = dev->dev->quotas.mpt; 537 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 538 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 539 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 540 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 541 props->max_srq = dev->dev->quotas.srq; 542 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 543 props->max_srq_sge = dev->dev->caps.max_srq_sge; 544 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 545 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 546 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 547 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 548 props->masked_atomic_cap = props->atomic_cap; 549 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 550 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 551 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 552 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 553 props->max_mcast_grp; 554 props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL; 555 props->timestamp_mask = 0xFFFFFFFFFFFFULL; 556 props->max_ah = INT_MAX; 557 558 if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET || 559 mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) { 560 if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) { 561 props->rss_caps.max_rwq_indirection_tables = 562 props->max_qp; 563 props->rss_caps.max_rwq_indirection_table_size = 564 dev->dev->caps.max_rss_tbl_sz; 565 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET; 566 props->max_wq_type_rq = props->max_qp; 567 } 568 569 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 570 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS; 571 } 572 573 props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT; 574 props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD; 575 576 if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) { 577 resp.response_length += sizeof(resp.hca_core_clock_offset); 578 if (!mlx4_get_internal_clock_params(dev->dev, &clock_params)) { 579 resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET; 580 resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE; 581 } 582 } 583 584 if (uhw->outlen >= resp.response_length + 585 sizeof(resp.max_inl_recv_sz)) { 586 resp.response_length += sizeof(resp.max_inl_recv_sz); 587 resp.max_inl_recv_sz = dev->dev->caps.max_rq_sg * 588 sizeof(struct mlx4_wqe_data_seg); 589 } 590 591 if (offsetofend(typeof(resp), rss_caps) <= uhw->outlen) { 592 if (props->rss_caps.supported_qpts) { 593 resp.rss_caps.rx_hash_function = 594 MLX4_IB_RX_HASH_FUNC_TOEPLITZ; 595 596 resp.rss_caps.rx_hash_fields_mask = 597 MLX4_IB_RX_HASH_SRC_IPV4 | 598 MLX4_IB_RX_HASH_DST_IPV4 | 599 MLX4_IB_RX_HASH_SRC_IPV6 | 600 MLX4_IB_RX_HASH_DST_IPV6 | 601 MLX4_IB_RX_HASH_SRC_PORT_TCP | 602 MLX4_IB_RX_HASH_DST_PORT_TCP | 603 MLX4_IB_RX_HASH_SRC_PORT_UDP | 604 MLX4_IB_RX_HASH_DST_PORT_UDP; 605 606 if (dev->dev->caps.tunnel_offload_mode == 607 MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 608 resp.rss_caps.rx_hash_fields_mask |= 609 MLX4_IB_RX_HASH_INNER; 610 } 611 resp.response_length = offsetof(typeof(resp), rss_caps) + 612 sizeof(resp.rss_caps); 613 } 614 615 if (offsetofend(typeof(resp), tso_caps) <= uhw->outlen) { 616 if (dev->dev->caps.max_gso_sz && 617 ((mlx4_ib_port_link_layer(ibdev, 1) == 618 IB_LINK_LAYER_ETHERNET) || 619 (mlx4_ib_port_link_layer(ibdev, 2) == 620 IB_LINK_LAYER_ETHERNET))) { 621 resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz; 622 resp.tso_caps.supported_qpts |= 623 1 << IB_QPT_RAW_PACKET; 624 } 625 resp.response_length = offsetof(typeof(resp), tso_caps) + 626 sizeof(resp.tso_caps); 627 } 628 629 if (uhw->outlen) { 630 err = ib_copy_to_udata(uhw, &resp, resp.response_length); 631 if (err) 632 goto out; 633 } 634 out: 635 kfree(in_mad); 636 kfree(out_mad); 637 638 return err; 639 } 640 641 static enum rdma_link_layer 642 mlx4_ib_port_link_layer(struct ib_device *device, u32 port_num) 643 { 644 struct mlx4_dev *dev = to_mdev(device)->dev; 645 646 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 647 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 648 } 649 650 static int ib_link_query_port(struct ib_device *ibdev, u32 port, 651 struct ib_port_attr *props, int netw_view) 652 { 653 struct ib_smp *in_mad = NULL; 654 struct ib_smp *out_mad = NULL; 655 int ext_active_speed; 656 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 657 int err = -ENOMEM; 658 659 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 660 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 661 if (!in_mad || !out_mad) 662 goto out; 663 664 ib_init_query_mad(in_mad); 665 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 666 in_mad->attr_mod = cpu_to_be32(port); 667 668 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 669 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 670 671 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 672 in_mad, out_mad); 673 if (err) 674 goto out; 675 676 677 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 678 props->lmc = out_mad->data[34] & 0x7; 679 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 680 props->sm_sl = out_mad->data[36] & 0xf; 681 props->state = out_mad->data[32] & 0xf; 682 props->phys_state = out_mad->data[33] >> 4; 683 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 684 if (netw_view) 685 props->gid_tbl_len = out_mad->data[50]; 686 else 687 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 688 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 689 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 690 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 691 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 692 props->active_width = out_mad->data[31] & 0xf; 693 props->active_speed = out_mad->data[35] >> 4; 694 props->max_mtu = out_mad->data[41] & 0xf; 695 props->active_mtu = out_mad->data[36] >> 4; 696 props->subnet_timeout = out_mad->data[51] & 0x1f; 697 props->max_vl_num = out_mad->data[37] >> 4; 698 props->init_type_reply = out_mad->data[41] >> 4; 699 700 /* Check if extended speeds (EDR/FDR/...) are supported */ 701 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 702 ext_active_speed = out_mad->data[62] >> 4; 703 704 switch (ext_active_speed) { 705 case 1: 706 props->active_speed = IB_SPEED_FDR; 707 break; 708 case 2: 709 props->active_speed = IB_SPEED_EDR; 710 break; 711 } 712 } 713 714 /* If reported active speed is QDR, check if is FDR-10 */ 715 if (props->active_speed == IB_SPEED_QDR) { 716 ib_init_query_mad(in_mad); 717 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 718 in_mad->attr_mod = cpu_to_be32(port); 719 720 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 721 NULL, NULL, in_mad, out_mad); 722 if (err) 723 goto out; 724 725 /* Checking LinkSpeedActive for FDR-10 */ 726 if (out_mad->data[15] & 0x1) 727 props->active_speed = IB_SPEED_FDR10; 728 } 729 730 /* Avoid wrong speed value returned by FW if the IB link is down. */ 731 if (props->state == IB_PORT_DOWN) 732 props->active_speed = IB_SPEED_SDR; 733 734 out: 735 kfree(in_mad); 736 kfree(out_mad); 737 return err; 738 } 739 740 static u8 state_to_phys_state(enum ib_port_state state) 741 { 742 return state == IB_PORT_ACTIVE ? 743 IB_PORT_PHYS_STATE_LINK_UP : IB_PORT_PHYS_STATE_DISABLED; 744 } 745 746 static int eth_link_query_port(struct ib_device *ibdev, u32 port, 747 struct ib_port_attr *props) 748 { 749 750 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 751 struct mlx4_ib_iboe *iboe = &mdev->iboe; 752 struct net_device *ndev; 753 enum ib_mtu tmp; 754 struct mlx4_cmd_mailbox *mailbox; 755 int err = 0; 756 int is_bonded = mlx4_is_bonded(mdev->dev); 757 758 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 759 if (IS_ERR(mailbox)) 760 return PTR_ERR(mailbox); 761 762 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 763 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 764 MLX4_CMD_WRAPPED); 765 if (err) 766 goto out; 767 768 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) || 769 (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ? 770 IB_WIDTH_4X : IB_WIDTH_1X; 771 props->active_speed = (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ? 772 IB_SPEED_FDR : IB_SPEED_QDR; 773 props->port_cap_flags = IB_PORT_CM_SUP; 774 props->ip_gids = true; 775 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 776 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 777 if (mdev->dev->caps.pkey_table_len[port]) 778 props->pkey_tbl_len = 1; 779 props->max_mtu = IB_MTU_4096; 780 props->max_vl_num = 2; 781 props->state = IB_PORT_DOWN; 782 props->phys_state = state_to_phys_state(props->state); 783 props->active_mtu = IB_MTU_256; 784 spin_lock_bh(&iboe->lock); 785 ndev = iboe->netdevs[port - 1]; 786 if (ndev && is_bonded) { 787 rcu_read_lock(); /* required to get upper dev */ 788 ndev = netdev_master_upper_dev_get_rcu(ndev); 789 rcu_read_unlock(); 790 } 791 if (!ndev) 792 goto out_unlock; 793 794 tmp = iboe_get_mtu(ndev->mtu); 795 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 796 797 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 798 IB_PORT_ACTIVE : IB_PORT_DOWN; 799 props->phys_state = state_to_phys_state(props->state); 800 out_unlock: 801 spin_unlock_bh(&iboe->lock); 802 out: 803 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 804 return err; 805 } 806 807 int __mlx4_ib_query_port(struct ib_device *ibdev, u32 port, 808 struct ib_port_attr *props, int netw_view) 809 { 810 int err; 811 812 /* props being zeroed by the caller, avoid zeroing it here */ 813 814 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 815 ib_link_query_port(ibdev, port, props, netw_view) : 816 eth_link_query_port(ibdev, port, props); 817 818 return err; 819 } 820 821 static int mlx4_ib_query_port(struct ib_device *ibdev, u32 port, 822 struct ib_port_attr *props) 823 { 824 /* returns host view */ 825 return __mlx4_ib_query_port(ibdev, port, props, 0); 826 } 827 828 int __mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index, 829 union ib_gid *gid, int netw_view) 830 { 831 struct ib_smp *in_mad = NULL; 832 struct ib_smp *out_mad = NULL; 833 int err = -ENOMEM; 834 struct mlx4_ib_dev *dev = to_mdev(ibdev); 835 int clear = 0; 836 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 837 838 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 839 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 840 if (!in_mad || !out_mad) 841 goto out; 842 843 ib_init_query_mad(in_mad); 844 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 845 in_mad->attr_mod = cpu_to_be32(port); 846 847 if (mlx4_is_mfunc(dev->dev) && netw_view) 848 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 849 850 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 851 if (err) 852 goto out; 853 854 memcpy(gid->raw, out_mad->data + 8, 8); 855 856 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 857 if (index) { 858 /* For any index > 0, return the null guid */ 859 err = 0; 860 clear = 1; 861 goto out; 862 } 863 } 864 865 ib_init_query_mad(in_mad); 866 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 867 in_mad->attr_mod = cpu_to_be32(index / 8); 868 869 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 870 NULL, NULL, in_mad, out_mad); 871 if (err) 872 goto out; 873 874 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 875 876 out: 877 if (clear) 878 memset(gid->raw + 8, 0, 8); 879 kfree(in_mad); 880 kfree(out_mad); 881 return err; 882 } 883 884 static int mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index, 885 union ib_gid *gid) 886 { 887 if (rdma_protocol_ib(ibdev, port)) 888 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 889 return 0; 890 } 891 892 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u32 port, 893 u64 *sl2vl_tbl) 894 { 895 union sl2vl_tbl_to_u64 sl2vl64; 896 struct ib_smp *in_mad = NULL; 897 struct ib_smp *out_mad = NULL; 898 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 899 int err = -ENOMEM; 900 int jj; 901 902 if (mlx4_is_slave(to_mdev(ibdev)->dev)) { 903 *sl2vl_tbl = 0; 904 return 0; 905 } 906 907 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 908 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 909 if (!in_mad || !out_mad) 910 goto out; 911 912 ib_init_query_mad(in_mad); 913 in_mad->attr_id = IB_SMP_ATTR_SL_TO_VL_TABLE; 914 in_mad->attr_mod = 0; 915 916 if (mlx4_is_mfunc(to_mdev(ibdev)->dev)) 917 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 918 919 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 920 in_mad, out_mad); 921 if (err) 922 goto out; 923 924 for (jj = 0; jj < 8; jj++) 925 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj]; 926 *sl2vl_tbl = sl2vl64.sl64; 927 928 out: 929 kfree(in_mad); 930 kfree(out_mad); 931 return err; 932 } 933 934 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev) 935 { 936 u64 sl2vl; 937 int i; 938 int err; 939 940 for (i = 1; i <= mdev->dev->caps.num_ports; i++) { 941 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH) 942 continue; 943 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl); 944 if (err) { 945 pr_err("Unable to get default sl to vl mapping for port %d. Using all zeroes (%d)\n", 946 i, err); 947 sl2vl = 0; 948 } 949 atomic64_set(&mdev->sl2vl[i - 1], sl2vl); 950 } 951 } 952 953 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 954 u16 *pkey, int netw_view) 955 { 956 struct ib_smp *in_mad = NULL; 957 struct ib_smp *out_mad = NULL; 958 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 959 int err = -ENOMEM; 960 961 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 962 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 963 if (!in_mad || !out_mad) 964 goto out; 965 966 ib_init_query_mad(in_mad); 967 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 968 in_mad->attr_mod = cpu_to_be32(index / 32); 969 970 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 971 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 972 973 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 974 in_mad, out_mad); 975 if (err) 976 goto out; 977 978 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 979 980 out: 981 kfree(in_mad); 982 kfree(out_mad); 983 return err; 984 } 985 986 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 987 u16 *pkey) 988 { 989 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 990 } 991 992 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 993 struct ib_device_modify *props) 994 { 995 struct mlx4_cmd_mailbox *mailbox; 996 unsigned long flags; 997 998 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 999 return -EOPNOTSUPP; 1000 1001 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 1002 return 0; 1003 1004 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 1005 return -EOPNOTSUPP; 1006 1007 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 1008 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1009 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 1010 1011 /* 1012 * If possible, pass node desc to FW, so it can generate 1013 * a 144 trap. If cmd fails, just ignore. 1014 */ 1015 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 1016 if (IS_ERR(mailbox)) 1017 return 0; 1018 1019 memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1020 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 1021 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 1022 1023 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 1024 1025 return 0; 1026 } 1027 1028 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u32 port, 1029 int reset_qkey_viols, u32 cap_mask) 1030 { 1031 struct mlx4_cmd_mailbox *mailbox; 1032 int err; 1033 1034 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 1035 if (IS_ERR(mailbox)) 1036 return PTR_ERR(mailbox); 1037 1038 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 1039 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 1040 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 1041 } else { 1042 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 1043 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 1044 } 1045 1046 err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE, 1047 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1048 MLX4_CMD_WRAPPED); 1049 1050 mlx4_free_cmd_mailbox(dev->dev, mailbox); 1051 return err; 1052 } 1053 1054 static int mlx4_ib_modify_port(struct ib_device *ibdev, u32 port, int mask, 1055 struct ib_port_modify *props) 1056 { 1057 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 1058 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 1059 struct ib_port_attr attr; 1060 u32 cap_mask; 1061 int err; 1062 1063 /* return OK if this is RoCE. CM calls ib_modify_port() regardless 1064 * of whether port link layer is ETH or IB. For ETH ports, qkey 1065 * violations and port capabilities are not meaningful. 1066 */ 1067 if (is_eth) 1068 return 0; 1069 1070 mutex_lock(&mdev->cap_mask_mutex); 1071 1072 err = ib_query_port(ibdev, port, &attr); 1073 if (err) 1074 goto out; 1075 1076 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 1077 ~props->clr_port_cap_mask; 1078 1079 err = mlx4_ib_SET_PORT(mdev, port, 1080 !!(mask & IB_PORT_RESET_QKEY_CNTR), 1081 cap_mask); 1082 1083 out: 1084 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 1085 return err; 1086 } 1087 1088 static int mlx4_ib_alloc_ucontext(struct ib_ucontext *uctx, 1089 struct ib_udata *udata) 1090 { 1091 struct ib_device *ibdev = uctx->device; 1092 struct mlx4_ib_dev *dev = to_mdev(ibdev); 1093 struct mlx4_ib_ucontext *context = to_mucontext(uctx); 1094 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 1095 struct mlx4_ib_alloc_ucontext_resp resp; 1096 int err; 1097 1098 if (!dev->ib_active) 1099 return -EAGAIN; 1100 1101 if (ibdev->ops.uverbs_abi_ver == 1102 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 1103 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 1104 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 1105 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1106 } else { 1107 resp.dev_caps = dev->dev->caps.userspace_caps; 1108 resp.qp_tab_size = dev->dev->caps.num_qps; 1109 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 1110 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1111 resp.cqe_size = dev->dev->caps.cqe_size; 1112 } 1113 1114 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 1115 if (err) 1116 return err; 1117 1118 INIT_LIST_HEAD(&context->db_page_list); 1119 mutex_init(&context->db_page_mutex); 1120 1121 INIT_LIST_HEAD(&context->wqn_ranges_list); 1122 mutex_init(&context->wqn_ranges_mutex); 1123 1124 if (ibdev->ops.uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 1125 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 1126 else 1127 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1128 1129 if (err) { 1130 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 1131 return -EFAULT; 1132 } 1133 1134 return err; 1135 } 1136 1137 static void mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 1138 { 1139 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 1140 1141 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 1142 } 1143 1144 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) 1145 { 1146 } 1147 1148 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 1149 { 1150 struct mlx4_ib_dev *dev = to_mdev(context->device); 1151 1152 switch (vma->vm_pgoff) { 1153 case 0: 1154 return rdma_user_mmap_io(context, vma, 1155 to_mucontext(context)->uar.pfn, 1156 PAGE_SIZE, 1157 pgprot_noncached(vma->vm_page_prot), 1158 NULL); 1159 1160 case 1: 1161 if (dev->dev->caps.bf_reg_size == 0) 1162 return -EINVAL; 1163 return rdma_user_mmap_io( 1164 context, vma, 1165 to_mucontext(context)->uar.pfn + 1166 dev->dev->caps.num_uars, 1167 PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot), 1168 NULL); 1169 1170 case 3: { 1171 struct mlx4_clock_params params; 1172 int ret; 1173 1174 ret = mlx4_get_internal_clock_params(dev->dev, ¶ms); 1175 if (ret) 1176 return ret; 1177 1178 return rdma_user_mmap_io( 1179 context, vma, 1180 (pci_resource_start(dev->dev->persist->pdev, 1181 params.bar) + 1182 params.offset) >> 1183 PAGE_SHIFT, 1184 PAGE_SIZE, pgprot_noncached(vma->vm_page_prot), 1185 NULL); 1186 } 1187 1188 default: 1189 return -EINVAL; 1190 } 1191 } 1192 1193 static int mlx4_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 1194 { 1195 struct mlx4_ib_pd *pd = to_mpd(ibpd); 1196 struct ib_device *ibdev = ibpd->device; 1197 int err; 1198 1199 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 1200 if (err) 1201 return err; 1202 1203 if (udata && ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) { 1204 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 1205 return -EFAULT; 1206 } 1207 return 0; 1208 } 1209 1210 static int mlx4_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 1211 { 1212 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 1213 return 0; 1214 } 1215 1216 static int mlx4_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata) 1217 { 1218 struct mlx4_ib_dev *dev = to_mdev(ibxrcd->device); 1219 struct mlx4_ib_xrcd *xrcd = to_mxrcd(ibxrcd); 1220 struct ib_cq_init_attr cq_attr = {}; 1221 int err; 1222 1223 if (!(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 1224 return -EOPNOTSUPP; 1225 1226 err = mlx4_xrcd_alloc(dev->dev, &xrcd->xrcdn); 1227 if (err) 1228 return err; 1229 1230 xrcd->pd = ib_alloc_pd(ibxrcd->device, 0); 1231 if (IS_ERR(xrcd->pd)) { 1232 err = PTR_ERR(xrcd->pd); 1233 goto err2; 1234 } 1235 1236 cq_attr.cqe = 1; 1237 xrcd->cq = ib_create_cq(ibxrcd->device, NULL, NULL, xrcd, &cq_attr); 1238 if (IS_ERR(xrcd->cq)) { 1239 err = PTR_ERR(xrcd->cq); 1240 goto err3; 1241 } 1242 1243 return 0; 1244 1245 err3: 1246 ib_dealloc_pd(xrcd->pd); 1247 err2: 1248 mlx4_xrcd_free(dev->dev, xrcd->xrcdn); 1249 return err; 1250 } 1251 1252 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata) 1253 { 1254 ib_destroy_cq(to_mxrcd(xrcd)->cq); 1255 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 1256 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 1257 return 0; 1258 } 1259 1260 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 1261 { 1262 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1263 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1264 struct mlx4_ib_gid_entry *ge; 1265 1266 ge = kzalloc(sizeof *ge, GFP_KERNEL); 1267 if (!ge) 1268 return -ENOMEM; 1269 1270 ge->gid = *gid; 1271 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 1272 ge->port = mqp->port; 1273 ge->added = 1; 1274 } 1275 1276 mutex_lock(&mqp->mutex); 1277 list_add_tail(&ge->list, &mqp->gid_list); 1278 mutex_unlock(&mqp->mutex); 1279 1280 return 0; 1281 } 1282 1283 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev, 1284 struct mlx4_ib_counters *ctr_table) 1285 { 1286 struct counter_index *counter, *tmp_count; 1287 1288 mutex_lock(&ctr_table->mutex); 1289 list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list, 1290 list) { 1291 if (counter->allocated) 1292 mlx4_counter_free(ibdev->dev, counter->index); 1293 list_del(&counter->list); 1294 kfree(counter); 1295 } 1296 mutex_unlock(&ctr_table->mutex); 1297 } 1298 1299 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 1300 union ib_gid *gid) 1301 { 1302 struct net_device *ndev; 1303 int ret = 0; 1304 1305 if (!mqp->port) 1306 return 0; 1307 1308 spin_lock_bh(&mdev->iboe.lock); 1309 ndev = mdev->iboe.netdevs[mqp->port - 1]; 1310 if (ndev) 1311 dev_hold(ndev); 1312 spin_unlock_bh(&mdev->iboe.lock); 1313 1314 if (ndev) { 1315 ret = 1; 1316 dev_put(ndev); 1317 } 1318 1319 return ret; 1320 } 1321 1322 struct mlx4_ib_steering { 1323 struct list_head list; 1324 struct mlx4_flow_reg_id reg_id; 1325 union ib_gid gid; 1326 }; 1327 1328 #define LAST_ETH_FIELD vlan_tag 1329 #define LAST_IB_FIELD sl 1330 #define LAST_IPV4_FIELD dst_ip 1331 #define LAST_TCP_UDP_FIELD src_port 1332 1333 /* Field is the last supported field */ 1334 #define FIELDS_NOT_SUPPORTED(filter, field)\ 1335 memchr_inv((void *)&filter.field +\ 1336 sizeof(filter.field), 0,\ 1337 sizeof(filter) -\ 1338 offsetof(typeof(filter), field) -\ 1339 sizeof(filter.field)) 1340 1341 static int parse_flow_attr(struct mlx4_dev *dev, 1342 u32 qp_num, 1343 union ib_flow_spec *ib_spec, 1344 struct _rule_hw *mlx4_spec) 1345 { 1346 enum mlx4_net_trans_rule_id type; 1347 1348 switch (ib_spec->type) { 1349 case IB_FLOW_SPEC_ETH: 1350 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) 1351 return -ENOTSUPP; 1352 1353 type = MLX4_NET_TRANS_RULE_ID_ETH; 1354 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 1355 ETH_ALEN); 1356 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 1357 ETH_ALEN); 1358 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 1359 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 1360 break; 1361 case IB_FLOW_SPEC_IB: 1362 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD)) 1363 return -ENOTSUPP; 1364 1365 type = MLX4_NET_TRANS_RULE_ID_IB; 1366 mlx4_spec->ib.l3_qpn = 1367 cpu_to_be32(qp_num); 1368 mlx4_spec->ib.qpn_mask = 1369 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 1370 break; 1371 1372 1373 case IB_FLOW_SPEC_IPV4: 1374 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) 1375 return -ENOTSUPP; 1376 1377 type = MLX4_NET_TRANS_RULE_ID_IPV4; 1378 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 1379 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 1380 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 1381 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 1382 break; 1383 1384 case IB_FLOW_SPEC_TCP: 1385 case IB_FLOW_SPEC_UDP: 1386 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) 1387 return -ENOTSUPP; 1388 1389 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 1390 MLX4_NET_TRANS_RULE_ID_TCP : 1391 MLX4_NET_TRANS_RULE_ID_UDP; 1392 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 1393 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 1394 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 1395 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 1396 break; 1397 1398 default: 1399 return -EINVAL; 1400 } 1401 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 1402 mlx4_hw_rule_sz(dev, type) < 0) 1403 return -EINVAL; 1404 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 1405 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 1406 return mlx4_hw_rule_sz(dev, type); 1407 } 1408 1409 struct default_rules { 1410 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1411 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1412 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1413 __u8 link_layer; 1414 }; 1415 static const struct default_rules default_table[] = { 1416 { 1417 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 1418 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 1419 .rules_create_list = {IB_FLOW_SPEC_IB}, 1420 .link_layer = IB_LINK_LAYER_INFINIBAND 1421 } 1422 }; 1423 1424 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 1425 struct ib_flow_attr *flow_attr) 1426 { 1427 int i, j, k; 1428 void *ib_flow; 1429 const struct default_rules *pdefault_rules = default_table; 1430 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 1431 1432 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 1433 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1434 memset(&field_types, 0, sizeof(field_types)); 1435 1436 if (link_layer != pdefault_rules->link_layer) 1437 continue; 1438 1439 ib_flow = flow_attr + 1; 1440 /* we assume the specs are sorted */ 1441 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 1442 j < flow_attr->num_of_specs; k++) { 1443 union ib_flow_spec *current_flow = 1444 (union ib_flow_spec *)ib_flow; 1445 1446 /* same layer but different type */ 1447 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 1448 (pdefault_rules->mandatory_fields[k] & 1449 IB_FLOW_SPEC_LAYER_MASK)) && 1450 (current_flow->type != 1451 pdefault_rules->mandatory_fields[k])) 1452 goto out; 1453 1454 /* same layer, try match next one */ 1455 if (current_flow->type == 1456 pdefault_rules->mandatory_fields[k]) { 1457 j++; 1458 ib_flow += 1459 ((union ib_flow_spec *)ib_flow)->size; 1460 } 1461 } 1462 1463 ib_flow = flow_attr + 1; 1464 for (j = 0; j < flow_attr->num_of_specs; 1465 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 1466 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 1467 /* same layer and same type */ 1468 if (((union ib_flow_spec *)ib_flow)->type == 1469 pdefault_rules->mandatory_not_fields[k]) 1470 goto out; 1471 1472 return i; 1473 } 1474 out: 1475 return -1; 1476 } 1477 1478 static int __mlx4_ib_create_default_rules( 1479 struct mlx4_ib_dev *mdev, 1480 struct ib_qp *qp, 1481 const struct default_rules *pdefault_rules, 1482 struct _rule_hw *mlx4_spec) { 1483 int size = 0; 1484 int i; 1485 1486 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 1487 union ib_flow_spec ib_spec = {}; 1488 int ret; 1489 1490 switch (pdefault_rules->rules_create_list[i]) { 1491 case 0: 1492 /* no rule */ 1493 continue; 1494 case IB_FLOW_SPEC_IB: 1495 ib_spec.type = IB_FLOW_SPEC_IB; 1496 ib_spec.size = sizeof(struct ib_flow_spec_ib); 1497 1498 break; 1499 default: 1500 /* invalid rule */ 1501 return -EINVAL; 1502 } 1503 /* We must put empty rule, qpn is being ignored */ 1504 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1505 mlx4_spec); 1506 if (ret < 0) { 1507 pr_info("invalid parsing\n"); 1508 return -EINVAL; 1509 } 1510 1511 mlx4_spec = (void *)mlx4_spec + ret; 1512 size += ret; 1513 } 1514 return size; 1515 } 1516 1517 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1518 int domain, 1519 enum mlx4_net_trans_promisc_mode flow_type, 1520 u64 *reg_id) 1521 { 1522 int ret, i; 1523 int size = 0; 1524 void *ib_flow; 1525 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1526 struct mlx4_cmd_mailbox *mailbox; 1527 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1528 int default_flow; 1529 1530 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1531 pr_err("Invalid priority value %d\n", flow_attr->priority); 1532 return -EINVAL; 1533 } 1534 1535 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1536 return -EINVAL; 1537 1538 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1539 if (IS_ERR(mailbox)) 1540 return PTR_ERR(mailbox); 1541 ctrl = mailbox->buf; 1542 1543 ctrl->prio = cpu_to_be16(domain | flow_attr->priority); 1544 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1545 ctrl->port = flow_attr->port; 1546 ctrl->qpn = cpu_to_be32(qp->qp_num); 1547 1548 ib_flow = flow_attr + 1; 1549 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1550 /* Add default flows */ 1551 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1552 if (default_flow >= 0) { 1553 ret = __mlx4_ib_create_default_rules( 1554 mdev, qp, default_table + default_flow, 1555 mailbox->buf + size); 1556 if (ret < 0) { 1557 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1558 return -EINVAL; 1559 } 1560 size += ret; 1561 } 1562 for (i = 0; i < flow_attr->num_of_specs; i++) { 1563 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1564 mailbox->buf + size); 1565 if (ret < 0) { 1566 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1567 return -EINVAL; 1568 } 1569 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1570 size += ret; 1571 } 1572 1573 if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR && 1574 flow_attr->num_of_specs == 1) { 1575 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1); 1576 enum ib_flow_spec_type header_spec = 1577 ((union ib_flow_spec *)(flow_attr + 1))->type; 1578 1579 if (header_spec == IB_FLOW_SPEC_ETH) 1580 mlx4_handle_eth_header_mcast_prio(ctrl, rule_header); 1581 } 1582 1583 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1584 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1585 MLX4_CMD_NATIVE); 1586 if (ret == -ENOMEM) 1587 pr_err("mcg table is full. Fail to register network rule.\n"); 1588 else if (ret == -ENXIO) 1589 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1590 else if (ret) 1591 pr_err("Invalid argument. Fail to register network rule.\n"); 1592 1593 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1594 return ret; 1595 } 1596 1597 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1598 { 1599 int err; 1600 err = mlx4_cmd(dev, reg_id, 0, 0, 1601 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1602 MLX4_CMD_NATIVE); 1603 if (err) 1604 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1605 reg_id); 1606 return err; 1607 } 1608 1609 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1610 u64 *reg_id) 1611 { 1612 void *ib_flow; 1613 union ib_flow_spec *ib_spec; 1614 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1615 int err = 0; 1616 1617 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 1618 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 1619 return 0; /* do nothing */ 1620 1621 ib_flow = flow_attr + 1; 1622 ib_spec = (union ib_flow_spec *)ib_flow; 1623 1624 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1625 return 0; /* do nothing */ 1626 1627 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1628 flow_attr->port, qp->qp_num, 1629 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1630 reg_id); 1631 return err; 1632 } 1633 1634 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev, 1635 struct ib_flow_attr *flow_attr, 1636 enum mlx4_net_trans_promisc_mode *type) 1637 { 1638 int err = 0; 1639 1640 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) || 1641 (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) || 1642 (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) { 1643 return -EOPNOTSUPP; 1644 } 1645 1646 if (flow_attr->num_of_specs == 0) { 1647 type[0] = MLX4_FS_MC_SNIFFER; 1648 type[1] = MLX4_FS_UC_SNIFFER; 1649 } else { 1650 union ib_flow_spec *ib_spec; 1651 1652 ib_spec = (union ib_flow_spec *)(flow_attr + 1); 1653 if (ib_spec->type != IB_FLOW_SPEC_ETH) 1654 return -EINVAL; 1655 1656 /* if all is zero than MC and UC */ 1657 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) { 1658 type[0] = MLX4_FS_MC_SNIFFER; 1659 type[1] = MLX4_FS_UC_SNIFFER; 1660 } else { 1661 u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01, 1662 ib_spec->eth.mask.dst_mac[1], 1663 ib_spec->eth.mask.dst_mac[2], 1664 ib_spec->eth.mask.dst_mac[3], 1665 ib_spec->eth.mask.dst_mac[4], 1666 ib_spec->eth.mask.dst_mac[5]}; 1667 1668 /* Above xor was only on MC bit, non empty mask is valid 1669 * only if this bit is set and rest are zero. 1670 */ 1671 if (!is_zero_ether_addr(&mac[0])) 1672 return -EINVAL; 1673 1674 if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac)) 1675 type[0] = MLX4_FS_MC_SNIFFER; 1676 else 1677 type[0] = MLX4_FS_UC_SNIFFER; 1678 } 1679 } 1680 1681 return err; 1682 } 1683 1684 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1685 struct ib_flow_attr *flow_attr, 1686 struct ib_udata *udata) 1687 { 1688 int err = 0, i = 0, j = 0; 1689 struct mlx4_ib_flow *mflow; 1690 enum mlx4_net_trans_promisc_mode type[2]; 1691 struct mlx4_dev *dev = (to_mdev(qp->device))->dev; 1692 int is_bonded = mlx4_is_bonded(dev); 1693 1694 if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP) 1695 return ERR_PTR(-EOPNOTSUPP); 1696 1697 if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 1698 (flow_attr->type != IB_FLOW_ATTR_NORMAL)) 1699 return ERR_PTR(-EOPNOTSUPP); 1700 1701 if (udata && 1702 udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen)) 1703 return ERR_PTR(-EOPNOTSUPP); 1704 1705 memset(type, 0, sizeof(type)); 1706 1707 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1708 if (!mflow) { 1709 err = -ENOMEM; 1710 goto err_free; 1711 } 1712 1713 switch (flow_attr->type) { 1714 case IB_FLOW_ATTR_NORMAL: 1715 /* If dont trap flag (continue match) is set, under specific 1716 * condition traffic be replicated to given qp, 1717 * without stealing it 1718 */ 1719 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) { 1720 err = mlx4_ib_add_dont_trap_rule(dev, 1721 flow_attr, 1722 type); 1723 if (err) 1724 goto err_free; 1725 } else { 1726 type[0] = MLX4_FS_REGULAR; 1727 } 1728 break; 1729 1730 case IB_FLOW_ATTR_ALL_DEFAULT: 1731 type[0] = MLX4_FS_ALL_DEFAULT; 1732 break; 1733 1734 case IB_FLOW_ATTR_MC_DEFAULT: 1735 type[0] = MLX4_FS_MC_DEFAULT; 1736 break; 1737 1738 case IB_FLOW_ATTR_SNIFFER: 1739 type[0] = MLX4_FS_MIRROR_RX_PORT; 1740 type[1] = MLX4_FS_MIRROR_SX_PORT; 1741 break; 1742 1743 default: 1744 err = -EINVAL; 1745 goto err_free; 1746 } 1747 1748 while (i < ARRAY_SIZE(type) && type[i]) { 1749 err = __mlx4_ib_create_flow(qp, flow_attr, MLX4_DOMAIN_UVERBS, 1750 type[i], &mflow->reg_id[i].id); 1751 if (err) 1752 goto err_create_flow; 1753 if (is_bonded) { 1754 /* Application always sees one port so the mirror rule 1755 * must be on port #2 1756 */ 1757 flow_attr->port = 2; 1758 err = __mlx4_ib_create_flow(qp, flow_attr, 1759 MLX4_DOMAIN_UVERBS, type[j], 1760 &mflow->reg_id[j].mirror); 1761 flow_attr->port = 1; 1762 if (err) 1763 goto err_create_flow; 1764 j++; 1765 } 1766 1767 i++; 1768 } 1769 1770 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1771 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1772 &mflow->reg_id[i].id); 1773 if (err) 1774 goto err_create_flow; 1775 1776 if (is_bonded) { 1777 flow_attr->port = 2; 1778 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1779 &mflow->reg_id[j].mirror); 1780 flow_attr->port = 1; 1781 if (err) 1782 goto err_create_flow; 1783 j++; 1784 } 1785 /* function to create mirror rule */ 1786 i++; 1787 } 1788 1789 return &mflow->ibflow; 1790 1791 err_create_flow: 1792 while (i) { 1793 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1794 mflow->reg_id[i].id); 1795 i--; 1796 } 1797 1798 while (j) { 1799 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1800 mflow->reg_id[j].mirror); 1801 j--; 1802 } 1803 err_free: 1804 kfree(mflow); 1805 return ERR_PTR(err); 1806 } 1807 1808 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1809 { 1810 int err, ret = 0; 1811 int i = 0; 1812 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1813 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1814 1815 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { 1816 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); 1817 if (err) 1818 ret = err; 1819 if (mflow->reg_id[i].mirror) { 1820 err = __mlx4_ib_destroy_flow(mdev->dev, 1821 mflow->reg_id[i].mirror); 1822 if (err) 1823 ret = err; 1824 } 1825 i++; 1826 } 1827 1828 kfree(mflow); 1829 return ret; 1830 } 1831 1832 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1833 { 1834 int err; 1835 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1836 struct mlx4_dev *dev = mdev->dev; 1837 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1838 struct mlx4_ib_steering *ib_steering = NULL; 1839 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1840 struct mlx4_flow_reg_id reg_id; 1841 1842 if (mdev->dev->caps.steering_mode == 1843 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1844 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1845 if (!ib_steering) 1846 return -ENOMEM; 1847 } 1848 1849 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1850 !!(mqp->flags & 1851 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1852 prot, ®_id.id); 1853 if (err) { 1854 pr_err("multicast attach op failed, err %d\n", err); 1855 goto err_malloc; 1856 } 1857 1858 reg_id.mirror = 0; 1859 if (mlx4_is_bonded(dev)) { 1860 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 1861 (mqp->port == 1) ? 2 : 1, 1862 !!(mqp->flags & 1863 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1864 prot, ®_id.mirror); 1865 if (err) 1866 goto err_add; 1867 } 1868 1869 err = add_gid_entry(ibqp, gid); 1870 if (err) 1871 goto err_add; 1872 1873 if (ib_steering) { 1874 memcpy(ib_steering->gid.raw, gid->raw, 16); 1875 ib_steering->reg_id = reg_id; 1876 mutex_lock(&mqp->mutex); 1877 list_add(&ib_steering->list, &mqp->steering_rules); 1878 mutex_unlock(&mqp->mutex); 1879 } 1880 return 0; 1881 1882 err_add: 1883 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1884 prot, reg_id.id); 1885 if (reg_id.mirror) 1886 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1887 prot, reg_id.mirror); 1888 err_malloc: 1889 kfree(ib_steering); 1890 1891 return err; 1892 } 1893 1894 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1895 { 1896 struct mlx4_ib_gid_entry *ge; 1897 struct mlx4_ib_gid_entry *tmp; 1898 struct mlx4_ib_gid_entry *ret = NULL; 1899 1900 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1901 if (!memcmp(raw, ge->gid.raw, 16)) { 1902 ret = ge; 1903 break; 1904 } 1905 } 1906 1907 return ret; 1908 } 1909 1910 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1911 { 1912 int err; 1913 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1914 struct mlx4_dev *dev = mdev->dev; 1915 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1916 struct net_device *ndev; 1917 struct mlx4_ib_gid_entry *ge; 1918 struct mlx4_flow_reg_id reg_id = {0, 0}; 1919 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1920 1921 if (mdev->dev->caps.steering_mode == 1922 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1923 struct mlx4_ib_steering *ib_steering; 1924 1925 mutex_lock(&mqp->mutex); 1926 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1927 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1928 list_del(&ib_steering->list); 1929 break; 1930 } 1931 } 1932 mutex_unlock(&mqp->mutex); 1933 if (&ib_steering->list == &mqp->steering_rules) { 1934 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1935 return -EINVAL; 1936 } 1937 reg_id = ib_steering->reg_id; 1938 kfree(ib_steering); 1939 } 1940 1941 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1942 prot, reg_id.id); 1943 if (err) 1944 return err; 1945 1946 if (mlx4_is_bonded(dev)) { 1947 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1948 prot, reg_id.mirror); 1949 if (err) 1950 return err; 1951 } 1952 1953 mutex_lock(&mqp->mutex); 1954 ge = find_gid_entry(mqp, gid->raw); 1955 if (ge) { 1956 spin_lock_bh(&mdev->iboe.lock); 1957 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1958 if (ndev) 1959 dev_hold(ndev); 1960 spin_unlock_bh(&mdev->iboe.lock); 1961 if (ndev) 1962 dev_put(ndev); 1963 list_del(&ge->list); 1964 kfree(ge); 1965 } else 1966 pr_warn("could not find mgid entry\n"); 1967 1968 mutex_unlock(&mqp->mutex); 1969 1970 return 0; 1971 } 1972 1973 static int init_node_data(struct mlx4_ib_dev *dev) 1974 { 1975 struct ib_smp *in_mad = NULL; 1976 struct ib_smp *out_mad = NULL; 1977 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1978 int err = -ENOMEM; 1979 1980 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1981 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1982 if (!in_mad || !out_mad) 1983 goto out; 1984 1985 ib_init_query_mad(in_mad); 1986 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1987 if (mlx4_is_master(dev->dev)) 1988 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1989 1990 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1991 if (err) 1992 goto out; 1993 1994 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 1995 1996 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1997 1998 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1999 if (err) 2000 goto out; 2001 2002 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 2003 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 2004 2005 out: 2006 kfree(in_mad); 2007 kfree(out_mad); 2008 return err; 2009 } 2010 2011 static ssize_t hca_type_show(struct device *device, 2012 struct device_attribute *attr, char *buf) 2013 { 2014 struct mlx4_ib_dev *dev = 2015 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2016 2017 return sysfs_emit(buf, "MT%d\n", dev->dev->persist->pdev->device); 2018 } 2019 static DEVICE_ATTR_RO(hca_type); 2020 2021 static ssize_t hw_rev_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 2027 return sysfs_emit(buf, "%x\n", dev->dev->rev_id); 2028 } 2029 static DEVICE_ATTR_RO(hw_rev); 2030 2031 static ssize_t board_id_show(struct device *device, 2032 struct device_attribute *attr, char *buf) 2033 { 2034 struct mlx4_ib_dev *dev = 2035 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2036 2037 return sysfs_emit(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id); 2038 } 2039 static DEVICE_ATTR_RO(board_id); 2040 2041 static struct attribute *mlx4_class_attributes[] = { 2042 &dev_attr_hw_rev.attr, 2043 &dev_attr_hca_type.attr, 2044 &dev_attr_board_id.attr, 2045 NULL 2046 }; 2047 2048 static const struct attribute_group mlx4_attr_group = { 2049 .attrs = mlx4_class_attributes, 2050 }; 2051 2052 struct diag_counter { 2053 const char *name; 2054 u32 offset; 2055 }; 2056 2057 #define DIAG_COUNTER(_name, _offset) \ 2058 { .name = #_name, .offset = _offset } 2059 2060 static const struct diag_counter diag_basic[] = { 2061 DIAG_COUNTER(rq_num_lle, 0x00), 2062 DIAG_COUNTER(sq_num_lle, 0x04), 2063 DIAG_COUNTER(rq_num_lqpoe, 0x08), 2064 DIAG_COUNTER(sq_num_lqpoe, 0x0C), 2065 DIAG_COUNTER(rq_num_lpe, 0x18), 2066 DIAG_COUNTER(sq_num_lpe, 0x1C), 2067 DIAG_COUNTER(rq_num_wrfe, 0x20), 2068 DIAG_COUNTER(sq_num_wrfe, 0x24), 2069 DIAG_COUNTER(sq_num_mwbe, 0x2C), 2070 DIAG_COUNTER(sq_num_bre, 0x34), 2071 DIAG_COUNTER(sq_num_rire, 0x44), 2072 DIAG_COUNTER(rq_num_rire, 0x48), 2073 DIAG_COUNTER(sq_num_rae, 0x4C), 2074 DIAG_COUNTER(rq_num_rae, 0x50), 2075 DIAG_COUNTER(sq_num_roe, 0x54), 2076 DIAG_COUNTER(sq_num_tree, 0x5C), 2077 DIAG_COUNTER(sq_num_rree, 0x64), 2078 DIAG_COUNTER(rq_num_rnr, 0x68), 2079 DIAG_COUNTER(sq_num_rnr, 0x6C), 2080 DIAG_COUNTER(rq_num_oos, 0x100), 2081 DIAG_COUNTER(sq_num_oos, 0x104), 2082 }; 2083 2084 static const struct diag_counter diag_ext[] = { 2085 DIAG_COUNTER(rq_num_dup, 0x130), 2086 DIAG_COUNTER(sq_num_to, 0x134), 2087 }; 2088 2089 static const struct diag_counter diag_device_only[] = { 2090 DIAG_COUNTER(num_cqovf, 0x1A0), 2091 DIAG_COUNTER(rq_num_udsdprd, 0x118), 2092 }; 2093 2094 static struct rdma_hw_stats * 2095 mlx4_ib_alloc_hw_device_stats(struct ib_device *ibdev) 2096 { 2097 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2098 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2099 2100 if (!diag[0].descs) 2101 return NULL; 2102 2103 return rdma_alloc_hw_stats_struct(diag[0].descs, diag[0].num_counters, 2104 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2105 } 2106 2107 static struct rdma_hw_stats * 2108 mlx4_ib_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num) 2109 { 2110 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2111 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2112 2113 if (!diag[1].descs) 2114 return NULL; 2115 2116 return rdma_alloc_hw_stats_struct(diag[1].descs, diag[1].num_counters, 2117 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2118 } 2119 2120 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev, 2121 struct rdma_hw_stats *stats, 2122 u32 port, int index) 2123 { 2124 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2125 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2126 u32 hw_value[ARRAY_SIZE(diag_device_only) + 2127 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {}; 2128 int ret; 2129 int i; 2130 2131 ret = mlx4_query_diag_counters(dev->dev, 2132 MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS, 2133 diag[!!port].offset, hw_value, 2134 diag[!!port].num_counters, port); 2135 2136 if (ret) 2137 return ret; 2138 2139 for (i = 0; i < diag[!!port].num_counters; i++) 2140 stats->value[i] = hw_value[i]; 2141 2142 return diag[!!port].num_counters; 2143 } 2144 2145 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev, 2146 struct rdma_stat_desc **pdescs, 2147 u32 **offset, u32 *num, bool port) 2148 { 2149 u32 num_counters; 2150 2151 num_counters = ARRAY_SIZE(diag_basic); 2152 2153 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) 2154 num_counters += ARRAY_SIZE(diag_ext); 2155 2156 if (!port) 2157 num_counters += ARRAY_SIZE(diag_device_only); 2158 2159 *pdescs = kcalloc(num_counters, sizeof(struct rdma_stat_desc), 2160 GFP_KERNEL); 2161 if (!*pdescs) 2162 return -ENOMEM; 2163 2164 *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL); 2165 if (!*offset) 2166 goto err; 2167 2168 *num = num_counters; 2169 2170 return 0; 2171 2172 err: 2173 kfree(*pdescs); 2174 return -ENOMEM; 2175 } 2176 2177 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev, 2178 struct rdma_stat_desc *descs, 2179 u32 *offset, bool port) 2180 { 2181 int i; 2182 int j; 2183 2184 for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) { 2185 descs[i].name = diag_basic[i].name; 2186 offset[i] = diag_basic[i].offset; 2187 } 2188 2189 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) { 2190 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) { 2191 descs[j].name = diag_ext[i].name; 2192 offset[j] = diag_ext[i].offset; 2193 } 2194 } 2195 2196 if (!port) { 2197 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) { 2198 descs[j].name = diag_device_only[i].name; 2199 offset[j] = diag_device_only[i].offset; 2200 } 2201 } 2202 } 2203 2204 static const struct ib_device_ops mlx4_ib_hw_stats_ops = { 2205 .alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats, 2206 .alloc_hw_port_stats = mlx4_ib_alloc_hw_port_stats, 2207 .get_hw_stats = mlx4_ib_get_hw_stats, 2208 }; 2209 2210 static const struct ib_device_ops mlx4_ib_hw_stats_ops1 = { 2211 .alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats, 2212 .get_hw_stats = mlx4_ib_get_hw_stats, 2213 }; 2214 2215 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev) 2216 { 2217 struct mlx4_ib_diag_counters *diag = ibdev->diag_counters; 2218 int i; 2219 int ret; 2220 bool per_port = !!(ibdev->dev->caps.flags2 & 2221 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT); 2222 2223 if (mlx4_is_slave(ibdev->dev)) 2224 return 0; 2225 2226 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2227 /* 2228 * i == 1 means we are building port counters, set a different 2229 * stats ops without port stats callback. 2230 */ 2231 if (i && !per_port) { 2232 ib_set_device_ops(&ibdev->ib_dev, 2233 &mlx4_ib_hw_stats_ops1); 2234 2235 return 0; 2236 } 2237 2238 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].descs, 2239 &diag[i].offset, 2240 &diag[i].num_counters, i); 2241 if (ret) 2242 goto err_alloc; 2243 2244 mlx4_ib_fill_diag_counters(ibdev, diag[i].descs, 2245 diag[i].offset, i); 2246 } 2247 2248 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops); 2249 2250 return 0; 2251 2252 err_alloc: 2253 if (i) { 2254 kfree(diag[i - 1].descs); 2255 kfree(diag[i - 1].offset); 2256 } 2257 2258 return ret; 2259 } 2260 2261 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev) 2262 { 2263 int i; 2264 2265 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2266 kfree(ibdev->diag_counters[i].offset); 2267 kfree(ibdev->diag_counters[i].descs); 2268 } 2269 } 2270 2271 #define MLX4_IB_INVALID_MAC ((u64)-1) 2272 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 2273 struct net_device *dev, 2274 int port) 2275 { 2276 u64 new_smac = 0; 2277 u64 release_mac = MLX4_IB_INVALID_MAC; 2278 struct mlx4_ib_qp *qp; 2279 2280 new_smac = ether_addr_to_u64(dev->dev_addr); 2281 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); 2282 2283 /* no need for update QP1 and mac registration in non-SRIOV */ 2284 if (!mlx4_is_mfunc(ibdev->dev)) 2285 return; 2286 2287 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 2288 qp = ibdev->qp1_proxy[port - 1]; 2289 if (qp) { 2290 int new_smac_index; 2291 u64 old_smac; 2292 struct mlx4_update_qp_params update_params; 2293 2294 mutex_lock(&qp->mutex); 2295 old_smac = qp->pri.smac; 2296 if (new_smac == old_smac) 2297 goto unlock; 2298 2299 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 2300 2301 if (new_smac_index < 0) 2302 goto unlock; 2303 2304 update_params.smac_index = new_smac_index; 2305 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, 2306 &update_params)) { 2307 release_mac = new_smac; 2308 goto unlock; 2309 } 2310 /* if old port was zero, no mac was yet registered for this QP */ 2311 if (qp->pri.smac_port) 2312 release_mac = old_smac; 2313 qp->pri.smac = new_smac; 2314 qp->pri.smac_port = port; 2315 qp->pri.smac_index = new_smac_index; 2316 } 2317 2318 unlock: 2319 if (release_mac != MLX4_IB_INVALID_MAC) 2320 mlx4_unregister_mac(ibdev->dev, port, release_mac); 2321 if (qp) 2322 mutex_unlock(&qp->mutex); 2323 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 2324 } 2325 2326 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, 2327 struct net_device *dev, 2328 unsigned long event) 2329 2330 { 2331 struct mlx4_ib_iboe *iboe; 2332 int update_qps_port = -1; 2333 int port; 2334 2335 ASSERT_RTNL(); 2336 2337 iboe = &ibdev->iboe; 2338 2339 spin_lock_bh(&iboe->lock); 2340 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 2341 2342 iboe->netdevs[port - 1] = 2343 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 2344 2345 if (dev == iboe->netdevs[port - 1] && 2346 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || 2347 event == NETDEV_UP || event == NETDEV_CHANGE)) 2348 update_qps_port = port; 2349 2350 if (dev == iboe->netdevs[port - 1] && 2351 (event == NETDEV_UP || event == NETDEV_DOWN)) { 2352 enum ib_port_state port_state; 2353 struct ib_event ibev = { }; 2354 2355 if (ib_get_cached_port_state(&ibdev->ib_dev, port, 2356 &port_state)) 2357 continue; 2358 2359 if (event == NETDEV_UP && 2360 (port_state != IB_PORT_ACTIVE || 2361 iboe->last_port_state[port - 1] != IB_PORT_DOWN)) 2362 continue; 2363 if (event == NETDEV_DOWN && 2364 (port_state != IB_PORT_DOWN || 2365 iboe->last_port_state[port - 1] != IB_PORT_ACTIVE)) 2366 continue; 2367 iboe->last_port_state[port - 1] = port_state; 2368 2369 ibev.device = &ibdev->ib_dev; 2370 ibev.element.port_num = port; 2371 ibev.event = event == NETDEV_UP ? IB_EVENT_PORT_ACTIVE : 2372 IB_EVENT_PORT_ERR; 2373 ib_dispatch_event(&ibev); 2374 } 2375 2376 } 2377 spin_unlock_bh(&iboe->lock); 2378 2379 if (update_qps_port > 0) 2380 mlx4_ib_update_qps(ibdev, dev, update_qps_port); 2381 } 2382 2383 static int mlx4_ib_netdev_event(struct notifier_block *this, 2384 unsigned long event, void *ptr) 2385 { 2386 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 2387 struct mlx4_ib_dev *ibdev; 2388 2389 if (!net_eq(dev_net(dev), &init_net)) 2390 return NOTIFY_DONE; 2391 2392 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 2393 mlx4_ib_scan_netdevs(ibdev, dev, event); 2394 2395 return NOTIFY_DONE; 2396 } 2397 2398 static void init_pkeys(struct mlx4_ib_dev *ibdev) 2399 { 2400 int port; 2401 int slave; 2402 int i; 2403 2404 if (mlx4_is_master(ibdev->dev)) { 2405 for (slave = 0; slave <= ibdev->dev->persist->num_vfs; 2406 ++slave) { 2407 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2408 for (i = 0; 2409 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2410 ++i) { 2411 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 2412 /* master has the identity virt2phys pkey mapping */ 2413 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 2414 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 2415 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 2416 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 2417 } 2418 } 2419 } 2420 /* initialize pkey cache */ 2421 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2422 for (i = 0; 2423 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2424 ++i) 2425 ibdev->pkeys.phys_pkey_cache[port-1][i] = 2426 (i) ? 0 : 0xFFFF; 2427 } 2428 } 2429 } 2430 2431 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2432 { 2433 int i, j, eq = 0, total_eqs = 0; 2434 2435 ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors, 2436 sizeof(ibdev->eq_table[0]), GFP_KERNEL); 2437 if (!ibdev->eq_table) 2438 return; 2439 2440 for (i = 1; i <= dev->caps.num_ports; i++) { 2441 for (j = 0; j < mlx4_get_eqs_per_port(dev, i); 2442 j++, total_eqs++) { 2443 if (i > 1 && mlx4_is_eq_shared(dev, total_eqs)) 2444 continue; 2445 ibdev->eq_table[eq] = total_eqs; 2446 if (!mlx4_assign_eq(dev, i, 2447 &ibdev->eq_table[eq])) 2448 eq++; 2449 else 2450 ibdev->eq_table[eq] = -1; 2451 } 2452 } 2453 2454 for (i = eq; i < dev->caps.num_comp_vectors; 2455 ibdev->eq_table[i++] = -1) 2456 ; 2457 2458 /* Advertise the new number of EQs to clients */ 2459 ibdev->ib_dev.num_comp_vectors = eq; 2460 } 2461 2462 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2463 { 2464 int i; 2465 int total_eqs = ibdev->ib_dev.num_comp_vectors; 2466 2467 /* no eqs were allocated */ 2468 if (!ibdev->eq_table) 2469 return; 2470 2471 /* Reset the advertised EQ number */ 2472 ibdev->ib_dev.num_comp_vectors = 0; 2473 2474 for (i = 0; i < total_eqs; i++) 2475 mlx4_release_eq(dev, ibdev->eq_table[i]); 2476 2477 kfree(ibdev->eq_table); 2478 ibdev->eq_table = NULL; 2479 } 2480 2481 static int mlx4_port_immutable(struct ib_device *ibdev, u32 port_num, 2482 struct ib_port_immutable *immutable) 2483 { 2484 struct ib_port_attr attr; 2485 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 2486 int err; 2487 2488 if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) { 2489 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 2490 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2491 } else { 2492 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) 2493 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 2494 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 2495 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE | 2496 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2497 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET; 2498 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE | 2499 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP)) 2500 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2501 } 2502 2503 err = ib_query_port(ibdev, port_num, &attr); 2504 if (err) 2505 return err; 2506 2507 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2508 immutable->gid_tbl_len = attr.gid_tbl_len; 2509 2510 return 0; 2511 } 2512 2513 static void get_fw_ver_str(struct ib_device *device, char *str) 2514 { 2515 struct mlx4_ib_dev *dev = 2516 container_of(device, struct mlx4_ib_dev, ib_dev); 2517 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d", 2518 (int) (dev->dev->caps.fw_ver >> 32), 2519 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 2520 (int) dev->dev->caps.fw_ver & 0xffff); 2521 } 2522 2523 static const struct ib_device_ops mlx4_ib_dev_ops = { 2524 .owner = THIS_MODULE, 2525 .driver_id = RDMA_DRIVER_MLX4, 2526 .uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION, 2527 2528 .add_gid = mlx4_ib_add_gid, 2529 .alloc_mr = mlx4_ib_alloc_mr, 2530 .alloc_pd = mlx4_ib_alloc_pd, 2531 .alloc_ucontext = mlx4_ib_alloc_ucontext, 2532 .attach_mcast = mlx4_ib_mcg_attach, 2533 .create_ah = mlx4_ib_create_ah, 2534 .create_cq = mlx4_ib_create_cq, 2535 .create_qp = mlx4_ib_create_qp, 2536 .create_srq = mlx4_ib_create_srq, 2537 .dealloc_pd = mlx4_ib_dealloc_pd, 2538 .dealloc_ucontext = mlx4_ib_dealloc_ucontext, 2539 .del_gid = mlx4_ib_del_gid, 2540 .dereg_mr = mlx4_ib_dereg_mr, 2541 .destroy_ah = mlx4_ib_destroy_ah, 2542 .destroy_cq = mlx4_ib_destroy_cq, 2543 .destroy_qp = mlx4_ib_destroy_qp, 2544 .destroy_srq = mlx4_ib_destroy_srq, 2545 .detach_mcast = mlx4_ib_mcg_detach, 2546 .device_group = &mlx4_attr_group, 2547 .disassociate_ucontext = mlx4_ib_disassociate_ucontext, 2548 .drain_rq = mlx4_ib_drain_rq, 2549 .drain_sq = mlx4_ib_drain_sq, 2550 .get_dev_fw_str = get_fw_ver_str, 2551 .get_dma_mr = mlx4_ib_get_dma_mr, 2552 .get_link_layer = mlx4_ib_port_link_layer, 2553 .get_netdev = mlx4_ib_get_netdev, 2554 .get_port_immutable = mlx4_port_immutable, 2555 .map_mr_sg = mlx4_ib_map_mr_sg, 2556 .mmap = mlx4_ib_mmap, 2557 .modify_cq = mlx4_ib_modify_cq, 2558 .modify_device = mlx4_ib_modify_device, 2559 .modify_port = mlx4_ib_modify_port, 2560 .modify_qp = mlx4_ib_modify_qp, 2561 .modify_srq = mlx4_ib_modify_srq, 2562 .poll_cq = mlx4_ib_poll_cq, 2563 .post_recv = mlx4_ib_post_recv, 2564 .post_send = mlx4_ib_post_send, 2565 .post_srq_recv = mlx4_ib_post_srq_recv, 2566 .process_mad = mlx4_ib_process_mad, 2567 .query_ah = mlx4_ib_query_ah, 2568 .query_device = mlx4_ib_query_device, 2569 .query_gid = mlx4_ib_query_gid, 2570 .query_pkey = mlx4_ib_query_pkey, 2571 .query_port = mlx4_ib_query_port, 2572 .query_qp = mlx4_ib_query_qp, 2573 .query_srq = mlx4_ib_query_srq, 2574 .reg_user_mr = mlx4_ib_reg_user_mr, 2575 .req_notify_cq = mlx4_ib_arm_cq, 2576 .rereg_user_mr = mlx4_ib_rereg_user_mr, 2577 .resize_cq = mlx4_ib_resize_cq, 2578 2579 INIT_RDMA_OBJ_SIZE(ib_ah, mlx4_ib_ah, ibah), 2580 INIT_RDMA_OBJ_SIZE(ib_cq, mlx4_ib_cq, ibcq), 2581 INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd), 2582 INIT_RDMA_OBJ_SIZE(ib_qp, mlx4_ib_qp, ibqp), 2583 INIT_RDMA_OBJ_SIZE(ib_srq, mlx4_ib_srq, ibsrq), 2584 INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext), 2585 }; 2586 2587 static const struct ib_device_ops mlx4_ib_dev_wq_ops = { 2588 .create_rwq_ind_table = mlx4_ib_create_rwq_ind_table, 2589 .create_wq = mlx4_ib_create_wq, 2590 .destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table, 2591 .destroy_wq = mlx4_ib_destroy_wq, 2592 .modify_wq = mlx4_ib_modify_wq, 2593 2594 INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx4_ib_rwq_ind_table, 2595 ib_rwq_ind_tbl), 2596 }; 2597 2598 static const struct ib_device_ops mlx4_ib_dev_mw_ops = { 2599 .alloc_mw = mlx4_ib_alloc_mw, 2600 .dealloc_mw = mlx4_ib_dealloc_mw, 2601 2602 INIT_RDMA_OBJ_SIZE(ib_mw, mlx4_ib_mw, ibmw), 2603 }; 2604 2605 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = { 2606 .alloc_xrcd = mlx4_ib_alloc_xrcd, 2607 .dealloc_xrcd = mlx4_ib_dealloc_xrcd, 2608 2609 INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx4_ib_xrcd, ibxrcd), 2610 }; 2611 2612 static const struct ib_device_ops mlx4_ib_dev_fs_ops = { 2613 .create_flow = mlx4_ib_create_flow, 2614 .destroy_flow = mlx4_ib_destroy_flow, 2615 }; 2616 2617 static void *mlx4_ib_add(struct mlx4_dev *dev) 2618 { 2619 struct mlx4_ib_dev *ibdev; 2620 int num_ports = 0; 2621 int i, j; 2622 int err; 2623 struct mlx4_ib_iboe *iboe; 2624 int ib_num_ports = 0; 2625 int num_req_counters; 2626 int allocated; 2627 u32 counter_index; 2628 struct counter_index *new_counter_index = NULL; 2629 2630 pr_info_once("%s", mlx4_ib_version); 2631 2632 num_ports = 0; 2633 mlx4_foreach_ib_transport_port(i, dev) 2634 num_ports++; 2635 2636 /* No point in registering a device with no ports... */ 2637 if (num_ports == 0) 2638 return NULL; 2639 2640 ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev); 2641 if (!ibdev) { 2642 dev_err(&dev->persist->pdev->dev, 2643 "Device struct alloc failed\n"); 2644 return NULL; 2645 } 2646 2647 iboe = &ibdev->iboe; 2648 2649 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 2650 goto err_dealloc; 2651 2652 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 2653 goto err_pd; 2654 2655 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 2656 PAGE_SIZE); 2657 if (!ibdev->uar_map) 2658 goto err_uar; 2659 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 2660 2661 ibdev->dev = dev; 2662 ibdev->bond_next_port = 0; 2663 2664 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 2665 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 2666 ibdev->num_ports = num_ports; 2667 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ? 2668 1 : ibdev->num_ports; 2669 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2670 ibdev->ib_dev.dev.parent = &dev->persist->pdev->dev; 2671 2672 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops); 2673 2674 if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) && 2675 ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) == 2676 IB_LINK_LAYER_ETHERNET) || 2677 (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) == 2678 IB_LINK_LAYER_ETHERNET))) 2679 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops); 2680 2681 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2682 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) 2683 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops); 2684 2685 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2686 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops); 2687 } 2688 2689 if (check_flow_steering_support(dev)) { 2690 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2691 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops); 2692 } 2693 2694 if (!dev->caps.userspace_caps) 2695 ibdev->ib_dev.ops.uverbs_abi_ver = 2696 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 2697 2698 mlx4_ib_alloc_eqs(dev, ibdev); 2699 2700 spin_lock_init(&iboe->lock); 2701 2702 if (init_node_data(ibdev)) 2703 goto err_map; 2704 mlx4_init_sl2vl_tbl(ibdev); 2705 2706 for (i = 0; i < ibdev->num_ports; ++i) { 2707 mutex_init(&ibdev->counters_table[i].mutex); 2708 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list); 2709 iboe->last_port_state[i] = IB_PORT_DOWN; 2710 } 2711 2712 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; 2713 for (i = 0; i < num_req_counters; ++i) { 2714 mutex_init(&ibdev->qp1_proxy_lock[i]); 2715 allocated = 0; 2716 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2717 IB_LINK_LAYER_ETHERNET) { 2718 err = mlx4_counter_alloc(ibdev->dev, &counter_index, 2719 MLX4_RES_USAGE_DRIVER); 2720 /* if failed to allocate a new counter, use default */ 2721 if (err) 2722 counter_index = 2723 mlx4_get_default_counter_index(dev, 2724 i + 1); 2725 else 2726 allocated = 1; 2727 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */ 2728 counter_index = mlx4_get_default_counter_index(dev, 2729 i + 1); 2730 } 2731 new_counter_index = kmalloc(sizeof(*new_counter_index), 2732 GFP_KERNEL); 2733 if (!new_counter_index) { 2734 if (allocated) 2735 mlx4_counter_free(ibdev->dev, counter_index); 2736 goto err_counter; 2737 } 2738 new_counter_index->index = counter_index; 2739 new_counter_index->allocated = allocated; 2740 list_add_tail(&new_counter_index->list, 2741 &ibdev->counters_table[i].counters_list); 2742 ibdev->counters_table[i].default_counter = counter_index; 2743 pr_info("counter index %d for port %d allocated %d\n", 2744 counter_index, i + 1, allocated); 2745 } 2746 if (mlx4_is_bonded(dev)) 2747 for (i = 1; i < ibdev->num_ports ; ++i) { 2748 new_counter_index = 2749 kmalloc(sizeof(struct counter_index), 2750 GFP_KERNEL); 2751 if (!new_counter_index) 2752 goto err_counter; 2753 new_counter_index->index = counter_index; 2754 new_counter_index->allocated = 0; 2755 list_add_tail(&new_counter_index->list, 2756 &ibdev->counters_table[i].counters_list); 2757 ibdev->counters_table[i].default_counter = 2758 counter_index; 2759 } 2760 2761 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2762 ib_num_ports++; 2763 2764 spin_lock_init(&ibdev->sm_lock); 2765 mutex_init(&ibdev->cap_mask_mutex); 2766 INIT_LIST_HEAD(&ibdev->qp_list); 2767 spin_lock_init(&ibdev->reset_flow_resource_lock); 2768 2769 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2770 ib_num_ports) { 2771 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2772 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2773 MLX4_IB_UC_STEER_QPN_ALIGN, 2774 &ibdev->steer_qpn_base, 0, 2775 MLX4_RES_USAGE_DRIVER); 2776 if (err) 2777 goto err_counter; 2778 2779 ibdev->ib_uc_qpns_bitmap = bitmap_alloc(ibdev->steer_qpn_count, 2780 GFP_KERNEL); 2781 if (!ibdev->ib_uc_qpns_bitmap) 2782 goto err_steer_qp_release; 2783 2784 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) { 2785 bitmap_zero(ibdev->ib_uc_qpns_bitmap, 2786 ibdev->steer_qpn_count); 2787 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2788 dev, ibdev->steer_qpn_base, 2789 ibdev->steer_qpn_base + 2790 ibdev->steer_qpn_count - 1); 2791 if (err) 2792 goto err_steer_free_bitmap; 2793 } else { 2794 bitmap_fill(ibdev->ib_uc_qpns_bitmap, 2795 ibdev->steer_qpn_count); 2796 } 2797 } 2798 2799 for (j = 1; j <= ibdev->dev->caps.num_ports; j++) 2800 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); 2801 2802 if (mlx4_ib_alloc_diag_counters(ibdev)) 2803 goto err_steer_free_bitmap; 2804 2805 if (ib_register_device(&ibdev->ib_dev, "mlx4_%d", 2806 &dev->persist->pdev->dev)) 2807 goto err_diag_counters; 2808 2809 if (mlx4_ib_mad_init(ibdev)) 2810 goto err_reg; 2811 2812 if (mlx4_ib_init_sriov(ibdev)) 2813 goto err_mad; 2814 2815 if (!iboe->nb.notifier_call) { 2816 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2817 err = register_netdevice_notifier(&iboe->nb); 2818 if (err) { 2819 iboe->nb.notifier_call = NULL; 2820 goto err_notif; 2821 } 2822 } 2823 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { 2824 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT); 2825 if (err) 2826 goto err_notif; 2827 } 2828 2829 ibdev->ib_active = true; 2830 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2831 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i), 2832 &ibdev->ib_dev); 2833 2834 if (mlx4_is_mfunc(ibdev->dev)) 2835 init_pkeys(ibdev); 2836 2837 /* create paravirt contexts for any VFs which are active */ 2838 if (mlx4_is_master(ibdev->dev)) { 2839 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2840 if (j == mlx4_master_func_num(ibdev->dev)) 2841 continue; 2842 if (mlx4_is_slave_active(ibdev->dev, j)) 2843 do_slave_init(ibdev, j, 1); 2844 } 2845 } 2846 return ibdev; 2847 2848 err_notif: 2849 if (ibdev->iboe.nb.notifier_call) { 2850 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2851 pr_warn("failure unregistering notifier\n"); 2852 ibdev->iboe.nb.notifier_call = NULL; 2853 } 2854 flush_workqueue(wq); 2855 2856 mlx4_ib_close_sriov(ibdev); 2857 2858 err_mad: 2859 mlx4_ib_mad_cleanup(ibdev); 2860 2861 err_reg: 2862 ib_unregister_device(&ibdev->ib_dev); 2863 2864 err_diag_counters: 2865 mlx4_ib_diag_cleanup(ibdev); 2866 2867 err_steer_free_bitmap: 2868 bitmap_free(ibdev->ib_uc_qpns_bitmap); 2869 2870 err_steer_qp_release: 2871 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2872 ibdev->steer_qpn_count); 2873 err_counter: 2874 for (i = 0; i < ibdev->num_ports; ++i) 2875 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]); 2876 2877 err_map: 2878 mlx4_ib_free_eqs(dev, ibdev); 2879 iounmap(ibdev->uar_map); 2880 2881 err_uar: 2882 mlx4_uar_free(dev, &ibdev->priv_uar); 2883 2884 err_pd: 2885 mlx4_pd_free(dev, ibdev->priv_pdn); 2886 2887 err_dealloc: 2888 ib_dealloc_device(&ibdev->ib_dev); 2889 2890 return NULL; 2891 } 2892 2893 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2894 { 2895 int offset; 2896 2897 WARN_ON(!dev->ib_uc_qpns_bitmap); 2898 2899 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2900 dev->steer_qpn_count, 2901 get_count_order(count)); 2902 if (offset < 0) 2903 return offset; 2904 2905 *qpn = dev->steer_qpn_base + offset; 2906 return 0; 2907 } 2908 2909 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2910 { 2911 if (!qpn || 2912 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2913 return; 2914 2915 if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n", 2916 qpn, dev->steer_qpn_base)) 2917 /* not supposed to be here */ 2918 return; 2919 2920 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2921 qpn - dev->steer_qpn_base, 2922 get_count_order(count)); 2923 } 2924 2925 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2926 int is_attach) 2927 { 2928 int err; 2929 size_t flow_size; 2930 struct ib_flow_attr *flow = NULL; 2931 struct ib_flow_spec_ib *ib_spec; 2932 2933 if (is_attach) { 2934 flow_size = sizeof(struct ib_flow_attr) + 2935 sizeof(struct ib_flow_spec_ib); 2936 flow = kzalloc(flow_size, GFP_KERNEL); 2937 if (!flow) 2938 return -ENOMEM; 2939 flow->port = mqp->port; 2940 flow->num_of_specs = 1; 2941 flow->size = flow_size; 2942 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2943 ib_spec->type = IB_FLOW_SPEC_IB; 2944 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2945 /* Add an empty rule for IB L2 */ 2946 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2947 2948 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, MLX4_DOMAIN_NIC, 2949 MLX4_FS_REGULAR, &mqp->reg_id); 2950 } else { 2951 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2952 } 2953 kfree(flow); 2954 return err; 2955 } 2956 2957 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 2958 { 2959 struct mlx4_ib_dev *ibdev = ibdev_ptr; 2960 int p; 2961 int i; 2962 2963 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2964 devlink_port_type_clear(mlx4_get_devlink_port(dev, i)); 2965 ibdev->ib_active = false; 2966 flush_workqueue(wq); 2967 2968 if (ibdev->iboe.nb.notifier_call) { 2969 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2970 pr_warn("failure unregistering notifier\n"); 2971 ibdev->iboe.nb.notifier_call = NULL; 2972 } 2973 2974 mlx4_ib_close_sriov(ibdev); 2975 mlx4_ib_mad_cleanup(ibdev); 2976 ib_unregister_device(&ibdev->ib_dev); 2977 mlx4_ib_diag_cleanup(ibdev); 2978 2979 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2980 ibdev->steer_qpn_count); 2981 bitmap_free(ibdev->ib_uc_qpns_bitmap); 2982 2983 iounmap(ibdev->uar_map); 2984 for (p = 0; p < ibdev->num_ports; ++p) 2985 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]); 2986 2987 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 2988 mlx4_CLOSE_PORT(dev, p); 2989 2990 mlx4_ib_free_eqs(dev, ibdev); 2991 2992 mlx4_uar_free(dev, &ibdev->priv_uar); 2993 mlx4_pd_free(dev, ibdev->priv_pdn); 2994 ib_dealloc_device(&ibdev->ib_dev); 2995 } 2996 2997 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 2998 { 2999 struct mlx4_ib_demux_work **dm = NULL; 3000 struct mlx4_dev *dev = ibdev->dev; 3001 int i; 3002 unsigned long flags; 3003 struct mlx4_active_ports actv_ports; 3004 unsigned int ports; 3005 unsigned int first_port; 3006 3007 if (!mlx4_is_master(dev)) 3008 return; 3009 3010 actv_ports = mlx4_get_active_ports(dev, slave); 3011 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 3012 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 3013 3014 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); 3015 if (!dm) 3016 return; 3017 3018 for (i = 0; i < ports; i++) { 3019 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 3020 if (!dm[i]) { 3021 while (--i >= 0) 3022 kfree(dm[i]); 3023 goto out; 3024 } 3025 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 3026 dm[i]->port = first_port + i + 1; 3027 dm[i]->slave = slave; 3028 dm[i]->do_init = do_init; 3029 dm[i]->dev = ibdev; 3030 } 3031 /* initialize or tear down tunnel QPs for the slave */ 3032 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 3033 if (!ibdev->sriov.is_going_down) { 3034 for (i = 0; i < ports; i++) 3035 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 3036 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3037 } else { 3038 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3039 for (i = 0; i < ports; i++) 3040 kfree(dm[i]); 3041 } 3042 out: 3043 kfree(dm); 3044 return; 3045 } 3046 3047 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev) 3048 { 3049 struct mlx4_ib_qp *mqp; 3050 unsigned long flags_qp; 3051 unsigned long flags_cq; 3052 struct mlx4_ib_cq *send_mcq, *recv_mcq; 3053 struct list_head cq_notify_list; 3054 struct mlx4_cq *mcq; 3055 unsigned long flags; 3056 3057 pr_warn("mlx4_ib_handle_catas_error was started\n"); 3058 INIT_LIST_HEAD(&cq_notify_list); 3059 3060 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 3061 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 3062 3063 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 3064 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 3065 if (mqp->sq.tail != mqp->sq.head) { 3066 send_mcq = to_mcq(mqp->ibqp.send_cq); 3067 spin_lock_irqsave(&send_mcq->lock, flags_cq); 3068 if (send_mcq->mcq.comp && 3069 mqp->ibqp.send_cq->comp_handler) { 3070 if (!send_mcq->mcq.reset_notify_added) { 3071 send_mcq->mcq.reset_notify_added = 1; 3072 list_add_tail(&send_mcq->mcq.reset_notify, 3073 &cq_notify_list); 3074 } 3075 } 3076 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 3077 } 3078 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 3079 /* Now, handle the QP's receive queue */ 3080 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 3081 /* no handling is needed for SRQ */ 3082 if (!mqp->ibqp.srq) { 3083 if (mqp->rq.tail != mqp->rq.head) { 3084 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 3085 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 3086 if (recv_mcq->mcq.comp && 3087 mqp->ibqp.recv_cq->comp_handler) { 3088 if (!recv_mcq->mcq.reset_notify_added) { 3089 recv_mcq->mcq.reset_notify_added = 1; 3090 list_add_tail(&recv_mcq->mcq.reset_notify, 3091 &cq_notify_list); 3092 } 3093 } 3094 spin_unlock_irqrestore(&recv_mcq->lock, 3095 flags_cq); 3096 } 3097 } 3098 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 3099 } 3100 3101 list_for_each_entry(mcq, &cq_notify_list, reset_notify) { 3102 mcq->comp(mcq); 3103 } 3104 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 3105 pr_warn("mlx4_ib_handle_catas_error ended\n"); 3106 } 3107 3108 static void handle_bonded_port_state_event(struct work_struct *work) 3109 { 3110 struct ib_event_work *ew = 3111 container_of(work, struct ib_event_work, work); 3112 struct mlx4_ib_dev *ibdev = ew->ib_dev; 3113 enum ib_port_state bonded_port_state = IB_PORT_NOP; 3114 int i; 3115 struct ib_event ibev; 3116 3117 kfree(ew); 3118 spin_lock_bh(&ibdev->iboe.lock); 3119 for (i = 0; i < MLX4_MAX_PORTS; ++i) { 3120 struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; 3121 enum ib_port_state curr_port_state; 3122 3123 if (!curr_netdev) 3124 continue; 3125 3126 curr_port_state = 3127 (netif_running(curr_netdev) && 3128 netif_carrier_ok(curr_netdev)) ? 3129 IB_PORT_ACTIVE : IB_PORT_DOWN; 3130 3131 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ? 3132 curr_port_state : IB_PORT_ACTIVE; 3133 } 3134 spin_unlock_bh(&ibdev->iboe.lock); 3135 3136 ibev.device = &ibdev->ib_dev; 3137 ibev.element.port_num = 1; 3138 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ? 3139 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 3140 3141 ib_dispatch_event(&ibev); 3142 } 3143 3144 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port) 3145 { 3146 u64 sl2vl; 3147 int err; 3148 3149 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl); 3150 if (err) { 3151 pr_err("Unable to get current sl to vl mapping for port %d. Using all zeroes (%d)\n", 3152 port, err); 3153 sl2vl = 0; 3154 } 3155 atomic64_set(&mdev->sl2vl[port - 1], sl2vl); 3156 } 3157 3158 static void ib_sl2vl_update_work(struct work_struct *work) 3159 { 3160 struct ib_event_work *ew = container_of(work, struct ib_event_work, work); 3161 struct mlx4_ib_dev *mdev = ew->ib_dev; 3162 int port = ew->port; 3163 3164 mlx4_ib_sl2vl_update(mdev, port); 3165 3166 kfree(ew); 3167 } 3168 3169 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev, 3170 int port) 3171 { 3172 struct ib_event_work *ew; 3173 3174 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3175 if (ew) { 3176 INIT_WORK(&ew->work, ib_sl2vl_update_work); 3177 ew->port = port; 3178 ew->ib_dev = ibdev; 3179 queue_work(wq, &ew->work); 3180 } 3181 } 3182 3183 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 3184 enum mlx4_dev_event event, unsigned long param) 3185 { 3186 struct ib_event ibev; 3187 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 3188 struct mlx4_eqe *eqe = NULL; 3189 struct ib_event_work *ew; 3190 int p = 0; 3191 3192 if (mlx4_is_bonded(dev) && 3193 ((event == MLX4_DEV_EVENT_PORT_UP) || 3194 (event == MLX4_DEV_EVENT_PORT_DOWN))) { 3195 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3196 if (!ew) 3197 return; 3198 INIT_WORK(&ew->work, handle_bonded_port_state_event); 3199 ew->ib_dev = ibdev; 3200 queue_work(wq, &ew->work); 3201 return; 3202 } 3203 3204 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 3205 eqe = (struct mlx4_eqe *)param; 3206 else 3207 p = (int) param; 3208 3209 switch (event) { 3210 case MLX4_DEV_EVENT_PORT_UP: 3211 if (p > ibdev->num_ports) 3212 return; 3213 if (!mlx4_is_slave(dev) && 3214 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 3215 IB_LINK_LAYER_INFINIBAND) { 3216 if (mlx4_is_master(dev)) 3217 mlx4_ib_invalidate_all_guid_record(ibdev, p); 3218 if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST && 3219 !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT)) 3220 mlx4_sched_ib_sl2vl_update_work(ibdev, p); 3221 } 3222 ibev.event = IB_EVENT_PORT_ACTIVE; 3223 break; 3224 3225 case MLX4_DEV_EVENT_PORT_DOWN: 3226 if (p > ibdev->num_ports) 3227 return; 3228 ibev.event = IB_EVENT_PORT_ERR; 3229 break; 3230 3231 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 3232 ibdev->ib_active = false; 3233 ibev.event = IB_EVENT_DEVICE_FATAL; 3234 mlx4_ib_handle_catas_error(ibdev); 3235 break; 3236 3237 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 3238 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 3239 if (!ew) 3240 return; 3241 3242 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 3243 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 3244 ew->ib_dev = ibdev; 3245 /* need to queue only for port owner, which uses GEN_EQE */ 3246 if (mlx4_is_master(dev)) 3247 queue_work(wq, &ew->work); 3248 else 3249 handle_port_mgmt_change_event(&ew->work); 3250 return; 3251 3252 case MLX4_DEV_EVENT_SLAVE_INIT: 3253 /* here, p is the slave id */ 3254 do_slave_init(ibdev, p, 1); 3255 if (mlx4_is_master(dev)) { 3256 int i; 3257 3258 for (i = 1; i <= ibdev->num_ports; i++) { 3259 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3260 == IB_LINK_LAYER_INFINIBAND) 3261 mlx4_ib_slave_alias_guid_event(ibdev, 3262 p, i, 3263 1); 3264 } 3265 } 3266 return; 3267 3268 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 3269 if (mlx4_is_master(dev)) { 3270 int i; 3271 3272 for (i = 1; i <= ibdev->num_ports; i++) { 3273 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3274 == IB_LINK_LAYER_INFINIBAND) 3275 mlx4_ib_slave_alias_guid_event(ibdev, 3276 p, i, 3277 0); 3278 } 3279 } 3280 /* here, p is the slave id */ 3281 do_slave_init(ibdev, p, 0); 3282 return; 3283 3284 default: 3285 return; 3286 } 3287 3288 ibev.device = ibdev_ptr; 3289 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; 3290 3291 ib_dispatch_event(&ibev); 3292 } 3293 3294 static struct mlx4_interface mlx4_ib_interface = { 3295 .add = mlx4_ib_add, 3296 .remove = mlx4_ib_remove, 3297 .event = mlx4_ib_event, 3298 .protocol = MLX4_PROT_IB_IPV6, 3299 .flags = MLX4_INTFF_BONDING 3300 }; 3301 3302 static int __init mlx4_ib_init(void) 3303 { 3304 int err; 3305 3306 wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM); 3307 if (!wq) 3308 return -ENOMEM; 3309 3310 err = mlx4_ib_cm_init(); 3311 if (err) 3312 goto clean_wq; 3313 3314 err = mlx4_ib_mcg_init(); 3315 if (err) 3316 goto clean_cm; 3317 3318 err = mlx4_register_interface(&mlx4_ib_interface); 3319 if (err) 3320 goto clean_mcg; 3321 3322 return 0; 3323 3324 clean_mcg: 3325 mlx4_ib_mcg_destroy(); 3326 3327 clean_cm: 3328 mlx4_ib_cm_destroy(); 3329 3330 clean_wq: 3331 destroy_workqueue(wq); 3332 return err; 3333 } 3334 3335 static void __exit mlx4_ib_cleanup(void) 3336 { 3337 mlx4_unregister_interface(&mlx4_ib_interface); 3338 mlx4_ib_mcg_destroy(); 3339 mlx4_ib_cm_destroy(); 3340 destroy_workqueue(wq); 3341 } 3342 3343 module_init(mlx4_ib_init); 3344 module_exit(mlx4_ib_cleanup); 3345