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 #include <rdma/uverbs_ioctl.h> 54 55 #include <net/bonding.h> 56 57 #include <linux/mlx4/driver.h> 58 #include <linux/mlx4/cmd.h> 59 #include <linux/mlx4/qp.h> 60 61 #include "mlx4_ib.h" 62 #include <rdma/mlx4-abi.h> 63 64 #define DRV_NAME MLX4_IB_DRV_NAME 65 #define DRV_VERSION "4.0-0" 66 67 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF 68 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF 69 #define MLX4_IB_CARD_REV_A0 0xA0 70 71 MODULE_AUTHOR("Roland Dreier"); 72 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 73 MODULE_LICENSE("Dual BSD/GPL"); 74 75 int mlx4_ib_sm_guid_assign = 0; 76 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 77 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)"); 78 79 static const char mlx4_ib_version[] = 80 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 81 DRV_VERSION "\n"; 82 83 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 84 static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device, 85 u32 port_num); 86 static int mlx4_ib_event(struct notifier_block *this, unsigned long event, 87 void *param); 88 89 static struct workqueue_struct *wq; 90 91 static int check_flow_steering_support(struct mlx4_dev *dev) 92 { 93 int eth_num_ports = 0; 94 int ib_num_ports = 0; 95 96 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; 97 98 if (dmfs) { 99 int i; 100 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 101 eth_num_ports++; 102 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 103 ib_num_ports++; 104 dmfs &= (!ib_num_ports || 105 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && 106 (!eth_num_ports || 107 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); 108 if (ib_num_ports && mlx4_is_mfunc(dev)) { 109 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); 110 dmfs = 0; 111 } 112 } 113 return dmfs; 114 } 115 116 static int num_ib_ports(struct mlx4_dev *dev) 117 { 118 int ib_ports = 0; 119 int i; 120 121 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 122 ib_ports++; 123 124 return ib_ports; 125 } 126 127 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, 128 u32 port_num) 129 { 130 struct mlx4_ib_dev *ibdev = to_mdev(device); 131 struct net_device *dev, *ret = NULL; 132 133 rcu_read_lock(); 134 for_each_netdev_rcu(&init_net, dev) { 135 if (dev->dev.parent != ibdev->ib_dev.dev.parent || 136 dev->dev_port + 1 != port_num) 137 continue; 138 139 if (mlx4_is_bonded(ibdev->dev)) { 140 struct net_device *upper; 141 142 upper = netdev_master_upper_dev_get_rcu(dev); 143 if (upper) { 144 struct net_device *active; 145 146 active = bond_option_active_slave_get_rcu(netdev_priv(upper)); 147 if (active) 148 dev = active; 149 } 150 } 151 152 dev_hold(dev); 153 ret = dev; 154 break; 155 } 156 157 rcu_read_unlock(); 158 return ret; 159 } 160 161 static int mlx4_ib_update_gids_v1(struct gid_entry *gids, 162 struct mlx4_ib_dev *ibdev, 163 u32 port_num) 164 { 165 struct mlx4_cmd_mailbox *mailbox; 166 int err; 167 struct mlx4_dev *dev = ibdev->dev; 168 int i; 169 union ib_gid *gid_tbl; 170 171 mailbox = mlx4_alloc_cmd_mailbox(dev); 172 if (IS_ERR(mailbox)) 173 return -ENOMEM; 174 175 gid_tbl = mailbox->buf; 176 177 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 178 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid)); 179 180 err = mlx4_cmd(dev, mailbox->dma, 181 MLX4_SET_PORT_GID_TABLE << 8 | port_num, 182 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 183 MLX4_CMD_WRAPPED); 184 if (mlx4_is_bonded(dev)) 185 err += mlx4_cmd(dev, mailbox->dma, 186 MLX4_SET_PORT_GID_TABLE << 8 | 2, 187 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 188 MLX4_CMD_WRAPPED); 189 190 mlx4_free_cmd_mailbox(dev, mailbox); 191 return err; 192 } 193 194 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids, 195 struct mlx4_ib_dev *ibdev, 196 u32 port_num) 197 { 198 struct mlx4_cmd_mailbox *mailbox; 199 int err; 200 struct mlx4_dev *dev = ibdev->dev; 201 int i; 202 struct { 203 union ib_gid gid; 204 __be32 rsrvd1[2]; 205 __be16 rsrvd2; 206 u8 type; 207 u8 version; 208 __be32 rsrvd3; 209 } *gid_tbl; 210 211 mailbox = mlx4_alloc_cmd_mailbox(dev); 212 if (IS_ERR(mailbox)) 213 return -ENOMEM; 214 215 gid_tbl = mailbox->buf; 216 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 217 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid)); 218 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { 219 gid_tbl[i].version = 2; 220 if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid)) 221 gid_tbl[i].type = 1; 222 } 223 } 224 225 err = mlx4_cmd(dev, mailbox->dma, 226 MLX4_SET_PORT_ROCE_ADDR << 8 | port_num, 227 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 228 MLX4_CMD_WRAPPED); 229 if (mlx4_is_bonded(dev)) 230 err += mlx4_cmd(dev, mailbox->dma, 231 MLX4_SET_PORT_ROCE_ADDR << 8 | 2, 232 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 233 MLX4_CMD_WRAPPED); 234 235 mlx4_free_cmd_mailbox(dev, mailbox); 236 return err; 237 } 238 239 static int mlx4_ib_update_gids(struct gid_entry *gids, 240 struct mlx4_ib_dev *ibdev, 241 u32 port_num) 242 { 243 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 244 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num); 245 246 return mlx4_ib_update_gids_v1(gids, ibdev, port_num); 247 } 248 249 static void free_gid_entry(struct gid_entry *entry) 250 { 251 memset(&entry->gid, 0, sizeof(entry->gid)); 252 kfree(entry->ctx); 253 entry->ctx = NULL; 254 } 255 256 static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context) 257 { 258 struct mlx4_ib_dev *ibdev = to_mdev(attr->device); 259 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 260 struct mlx4_port_gid_table *port_gid_table; 261 int free = -1, found = -1; 262 int ret = 0; 263 int hw_update = 0; 264 int i; 265 struct gid_entry *gids; 266 u16 vlan_id = 0xffff; 267 u8 mac[ETH_ALEN]; 268 269 if (!rdma_cap_roce_gid_table(attr->device, attr->port_num)) 270 return -EINVAL; 271 272 if (attr->port_num > MLX4_MAX_PORTS) 273 return -EINVAL; 274 275 if (!context) 276 return -EINVAL; 277 278 ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]); 279 if (ret) 280 return ret; 281 port_gid_table = &iboe->gids[attr->port_num - 1]; 282 spin_lock_bh(&iboe->lock); 283 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 284 if (!memcmp(&port_gid_table->gids[i].gid, 285 &attr->gid, sizeof(attr->gid)) && 286 port_gid_table->gids[i].gid_type == attr->gid_type && 287 port_gid_table->gids[i].vlan_id == vlan_id) { 288 found = i; 289 break; 290 } 291 if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid)) 292 free = i; /* HW has space */ 293 } 294 295 if (found < 0) { 296 if (free < 0) { 297 ret = -ENOSPC; 298 } else { 299 port_gid_table->gids[free].ctx = kmalloc_obj(*port_gid_table->gids[free].ctx, 300 GFP_ATOMIC); 301 if (!port_gid_table->gids[free].ctx) { 302 ret = -ENOMEM; 303 } else { 304 *context = port_gid_table->gids[free].ctx; 305 port_gid_table->gids[free].gid = attr->gid; 306 port_gid_table->gids[free].gid_type = attr->gid_type; 307 port_gid_table->gids[free].vlan_id = vlan_id; 308 port_gid_table->gids[free].ctx->real_index = free; 309 port_gid_table->gids[free].ctx->refcount = 1; 310 hw_update = 1; 311 } 312 } 313 } else { 314 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx; 315 *context = ctx; 316 ctx->refcount++; 317 } 318 if (!ret && hw_update) { 319 gids = kmalloc_objs(*gids, MLX4_MAX_PORT_GIDS, GFP_ATOMIC); 320 if (!gids) { 321 ret = -ENOMEM; 322 *context = NULL; 323 free_gid_entry(&port_gid_table->gids[free]); 324 } else { 325 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 326 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid)); 327 gids[i].gid_type = port_gid_table->gids[i].gid_type; 328 } 329 } 330 } 331 spin_unlock_bh(&iboe->lock); 332 333 if (!ret && hw_update) { 334 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num); 335 if (ret) { 336 spin_lock_bh(&iboe->lock); 337 *context = NULL; 338 free_gid_entry(&port_gid_table->gids[free]); 339 spin_unlock_bh(&iboe->lock); 340 } 341 kfree(gids); 342 } 343 344 return ret; 345 } 346 347 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context) 348 { 349 struct gid_cache_context *ctx = *context; 350 struct mlx4_ib_dev *ibdev = to_mdev(attr->device); 351 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 352 struct mlx4_port_gid_table *port_gid_table; 353 int ret = 0; 354 int hw_update = 0; 355 struct gid_entry *gids = NULL; 356 357 if (!rdma_cap_roce_gid_table(attr->device, attr->port_num)) 358 return -EINVAL; 359 360 if (attr->port_num > MLX4_MAX_PORTS) 361 return -EINVAL; 362 363 port_gid_table = &iboe->gids[attr->port_num - 1]; 364 spin_lock_bh(&iboe->lock); 365 if (ctx) { 366 ctx->refcount--; 367 if (!ctx->refcount) { 368 unsigned int real_index = ctx->real_index; 369 370 free_gid_entry(&port_gid_table->gids[real_index]); 371 hw_update = 1; 372 } 373 } 374 if (!ret && hw_update) { 375 int i; 376 377 gids = kmalloc_objs(*gids, MLX4_MAX_PORT_GIDS, GFP_ATOMIC); 378 if (!gids) { 379 ret = -ENOMEM; 380 } else { 381 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 382 memcpy(&gids[i].gid, 383 &port_gid_table->gids[i].gid, 384 sizeof(union ib_gid)); 385 gids[i].gid_type = 386 port_gid_table->gids[i].gid_type; 387 } 388 } 389 } 390 spin_unlock_bh(&iboe->lock); 391 392 if (gids) 393 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num); 394 395 kfree(gids); 396 return ret; 397 } 398 399 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev, 400 const struct ib_gid_attr *attr) 401 { 402 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 403 struct gid_cache_context *ctx = NULL; 404 struct mlx4_port_gid_table *port_gid_table; 405 int real_index = -EINVAL; 406 int i; 407 unsigned long flags; 408 u32 port_num = attr->port_num; 409 410 if (port_num > MLX4_MAX_PORTS) 411 return -EINVAL; 412 413 if (mlx4_is_bonded(ibdev->dev)) 414 port_num = 1; 415 416 if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num)) 417 return attr->index; 418 419 spin_lock_irqsave(&iboe->lock, flags); 420 port_gid_table = &iboe->gids[port_num - 1]; 421 422 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 423 if (!memcmp(&port_gid_table->gids[i].gid, 424 &attr->gid, sizeof(attr->gid)) && 425 attr->gid_type == port_gid_table->gids[i].gid_type) { 426 ctx = port_gid_table->gids[i].ctx; 427 break; 428 } 429 if (ctx) 430 real_index = ctx->real_index; 431 spin_unlock_irqrestore(&iboe->lock, flags); 432 return real_index; 433 } 434 435 static int mlx4_ib_query_device(struct ib_device *ibdev, 436 struct ib_device_attr *props, 437 struct ib_udata *uhw) 438 { 439 struct mlx4_ib_dev *dev = to_mdev(ibdev); 440 struct ib_smp *in_mad; 441 struct ib_smp *out_mad; 442 int err; 443 int have_ib_ports; 444 struct mlx4_uverbs_ex_query_device cmd; 445 struct mlx4_uverbs_ex_query_device_resp resp = {}; 446 struct mlx4_clock_params clock_params; 447 size_t uhw_outlen = uhw ? uhw->outlen : 0; 448 449 if (uhw && uhw->inlen) { 450 err = ib_copy_validate_udata_in_cm(uhw, cmd, reserved, 0); 451 if (err) 452 return err; 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_obj(*in_mad); 461 out_mad = kmalloc_obj(*out_mad); 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_respond_udata(uhw, resp); 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; 654 struct ib_smp *out_mad; 655 int ext_active_speed; 656 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 657 int err = -ENOMEM; 658 659 in_mad = kzalloc_obj(*in_mad); 660 out_mad = kmalloc_obj(*out_mad); 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; 832 struct ib_smp *out_mad; 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_obj(*in_mad); 839 out_mad = kmalloc_obj(*out_mad); 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; 897 struct ib_smp *out_mad; 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_obj(*in_mad); 908 out_mad = kmalloc_obj(*out_mad); 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; 957 struct ib_smp *out_mad; 958 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 959 int err = -ENOMEM; 960 961 in_mad = kzalloc_obj(*in_mad); 962 out_mad = kmalloc_obj(*out_mad); 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_respond_udata(udata, resp_v3); 1126 else 1127 err = ib_respond_udata(udata, resp); 1128 1129 if (err) { 1130 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 1131 return err; 1132 } 1133 1134 return 0; 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) { 1204 struct mlx4_ib_alloc_pd_resp uresp = { .pdn = pd->pdn }; 1205 1206 err = ib_respond_udata(udata, uresp); 1207 if (err) { 1208 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 1209 return err; 1210 } 1211 } 1212 return 0; 1213 } 1214 1215 static int mlx4_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 1216 { 1217 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 1218 return 0; 1219 } 1220 1221 static int mlx4_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata) 1222 { 1223 struct mlx4_ib_dev *dev = to_mdev(ibxrcd->device); 1224 struct mlx4_ib_xrcd *xrcd = to_mxrcd(ibxrcd); 1225 struct ib_cq_init_attr cq_attr = {}; 1226 int err; 1227 1228 if (!(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 1229 return -EOPNOTSUPP; 1230 1231 err = mlx4_xrcd_alloc(dev->dev, &xrcd->xrcdn); 1232 if (err) 1233 return err; 1234 1235 xrcd->pd = ib_alloc_pd(ibxrcd->device, 0); 1236 if (IS_ERR(xrcd->pd)) { 1237 err = PTR_ERR(xrcd->pd); 1238 goto err2; 1239 } 1240 1241 cq_attr.cqe = 1; 1242 xrcd->cq = ib_create_cq(ibxrcd->device, NULL, NULL, xrcd, &cq_attr); 1243 if (IS_ERR(xrcd->cq)) { 1244 err = PTR_ERR(xrcd->cq); 1245 goto err3; 1246 } 1247 1248 return 0; 1249 1250 err3: 1251 ib_dealloc_pd(xrcd->pd); 1252 err2: 1253 mlx4_xrcd_free(dev->dev, xrcd->xrcdn); 1254 return err; 1255 } 1256 1257 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata) 1258 { 1259 ib_destroy_cq(to_mxrcd(xrcd)->cq); 1260 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 1261 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 1262 return 0; 1263 } 1264 1265 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 1266 { 1267 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1268 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1269 struct mlx4_ib_gid_entry *ge; 1270 1271 ge = kzalloc_obj(*ge); 1272 if (!ge) 1273 return -ENOMEM; 1274 1275 ge->gid = *gid; 1276 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 1277 ge->port = mqp->port; 1278 ge->added = 1; 1279 } 1280 1281 mutex_lock(&mqp->mutex); 1282 list_add_tail(&ge->list, &mqp->gid_list); 1283 mutex_unlock(&mqp->mutex); 1284 1285 return 0; 1286 } 1287 1288 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev, 1289 struct mlx4_ib_counters *ctr_table) 1290 { 1291 struct counter_index *counter, *tmp_count; 1292 1293 mutex_lock(&ctr_table->mutex); 1294 list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list, 1295 list) { 1296 if (counter->allocated) 1297 mlx4_counter_free(ibdev->dev, counter->index); 1298 list_del(&counter->list); 1299 kfree(counter); 1300 } 1301 mutex_unlock(&ctr_table->mutex); 1302 } 1303 1304 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 1305 union ib_gid *gid) 1306 { 1307 struct net_device *ndev; 1308 int ret = 0; 1309 1310 if (!mqp->port) 1311 return 0; 1312 1313 spin_lock_bh(&mdev->iboe.lock); 1314 ndev = mdev->iboe.netdevs[mqp->port - 1]; 1315 dev_hold(ndev); 1316 spin_unlock_bh(&mdev->iboe.lock); 1317 1318 if (ndev) { 1319 ret = 1; 1320 dev_put(ndev); 1321 } 1322 1323 return ret; 1324 } 1325 1326 struct mlx4_ib_steering { 1327 struct list_head list; 1328 struct mlx4_flow_reg_id reg_id; 1329 union ib_gid gid; 1330 }; 1331 1332 #define LAST_ETH_FIELD vlan_tag 1333 #define LAST_IB_FIELD sl 1334 #define LAST_IPV4_FIELD dst_ip 1335 #define LAST_TCP_UDP_FIELD src_port 1336 1337 /* Field is the last supported field */ 1338 #define FIELDS_NOT_SUPPORTED(filter, field)\ 1339 memchr_inv((void *)&filter.field +\ 1340 sizeof(filter.field), 0,\ 1341 sizeof(filter) -\ 1342 offsetof(typeof(filter), field) -\ 1343 sizeof(filter.field)) 1344 1345 static int parse_flow_attr(struct mlx4_dev *dev, 1346 u32 qp_num, 1347 union ib_flow_spec *ib_spec, 1348 struct _rule_hw *mlx4_spec) 1349 { 1350 enum mlx4_net_trans_rule_id type; 1351 1352 switch (ib_spec->type) { 1353 case IB_FLOW_SPEC_ETH: 1354 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) 1355 return -ENOTSUPP; 1356 1357 type = MLX4_NET_TRANS_RULE_ID_ETH; 1358 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 1359 ETH_ALEN); 1360 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 1361 ETH_ALEN); 1362 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 1363 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 1364 break; 1365 case IB_FLOW_SPEC_IB: 1366 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD)) 1367 return -ENOTSUPP; 1368 1369 type = MLX4_NET_TRANS_RULE_ID_IB; 1370 mlx4_spec->ib.l3_qpn = 1371 cpu_to_be32(qp_num); 1372 mlx4_spec->ib.qpn_mask = 1373 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 1374 break; 1375 1376 1377 case IB_FLOW_SPEC_IPV4: 1378 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) 1379 return -ENOTSUPP; 1380 1381 type = MLX4_NET_TRANS_RULE_ID_IPV4; 1382 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 1383 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 1384 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 1385 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 1386 break; 1387 1388 case IB_FLOW_SPEC_TCP: 1389 case IB_FLOW_SPEC_UDP: 1390 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) 1391 return -ENOTSUPP; 1392 1393 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 1394 MLX4_NET_TRANS_RULE_ID_TCP : 1395 MLX4_NET_TRANS_RULE_ID_UDP; 1396 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 1397 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 1398 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 1399 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 1400 break; 1401 1402 default: 1403 return -EINVAL; 1404 } 1405 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 1406 mlx4_hw_rule_sz(dev, type) < 0) 1407 return -EINVAL; 1408 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 1409 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 1410 return mlx4_hw_rule_sz(dev, type); 1411 } 1412 1413 struct default_rules { 1414 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1415 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1416 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1417 __u8 link_layer; 1418 }; 1419 static const struct default_rules default_table[] = { 1420 { 1421 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 1422 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 1423 .rules_create_list = {IB_FLOW_SPEC_IB}, 1424 .link_layer = IB_LINK_LAYER_INFINIBAND 1425 } 1426 }; 1427 1428 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 1429 struct ib_flow_attr *flow_attr) 1430 { 1431 int i, j, k; 1432 void *ib_flow; 1433 const struct default_rules *pdefault_rules = default_table; 1434 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 1435 1436 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 1437 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1438 memset(&field_types, 0, sizeof(field_types)); 1439 1440 if (link_layer != pdefault_rules->link_layer) 1441 continue; 1442 1443 ib_flow = flow_attr + 1; 1444 /* we assume the specs are sorted */ 1445 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 1446 j < flow_attr->num_of_specs; k++) { 1447 union ib_flow_spec *current_flow = 1448 (union ib_flow_spec *)ib_flow; 1449 1450 /* same layer but different type */ 1451 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 1452 (pdefault_rules->mandatory_fields[k] & 1453 IB_FLOW_SPEC_LAYER_MASK)) && 1454 (current_flow->type != 1455 pdefault_rules->mandatory_fields[k])) 1456 goto out; 1457 1458 /* same layer, try match next one */ 1459 if (current_flow->type == 1460 pdefault_rules->mandatory_fields[k]) { 1461 j++; 1462 ib_flow += 1463 ((union ib_flow_spec *)ib_flow)->size; 1464 } 1465 } 1466 1467 ib_flow = flow_attr + 1; 1468 for (j = 0; j < flow_attr->num_of_specs; 1469 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 1470 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 1471 /* same layer and same type */ 1472 if (((union ib_flow_spec *)ib_flow)->type == 1473 pdefault_rules->mandatory_not_fields[k]) 1474 goto out; 1475 1476 return i; 1477 } 1478 out: 1479 return -1; 1480 } 1481 1482 static int __mlx4_ib_create_default_rules( 1483 struct mlx4_ib_dev *mdev, 1484 struct ib_qp *qp, 1485 const struct default_rules *pdefault_rules, 1486 struct _rule_hw *mlx4_spec) { 1487 int size = 0; 1488 int i; 1489 1490 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 1491 union ib_flow_spec ib_spec = {}; 1492 int ret; 1493 1494 switch (pdefault_rules->rules_create_list[i]) { 1495 case 0: 1496 /* no rule */ 1497 continue; 1498 case IB_FLOW_SPEC_IB: 1499 ib_spec.type = IB_FLOW_SPEC_IB; 1500 ib_spec.size = sizeof(struct ib_flow_spec_ib); 1501 1502 break; 1503 default: 1504 /* invalid rule */ 1505 return -EINVAL; 1506 } 1507 /* We must put empty rule, qpn is being ignored */ 1508 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1509 mlx4_spec); 1510 if (ret < 0) { 1511 pr_info("invalid parsing\n"); 1512 return -EINVAL; 1513 } 1514 1515 mlx4_spec = (void *)mlx4_spec + ret; 1516 size += ret; 1517 } 1518 return size; 1519 } 1520 1521 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1522 int domain, 1523 enum mlx4_net_trans_promisc_mode flow_type, 1524 u64 *reg_id) 1525 { 1526 int ret, i; 1527 int size = 0; 1528 void *ib_flow; 1529 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1530 struct mlx4_cmd_mailbox *mailbox; 1531 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1532 int default_flow; 1533 1534 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1535 pr_err("Invalid priority value %d\n", flow_attr->priority); 1536 return -EINVAL; 1537 } 1538 1539 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1540 return -EINVAL; 1541 1542 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1543 if (IS_ERR(mailbox)) 1544 return PTR_ERR(mailbox); 1545 ctrl = mailbox->buf; 1546 1547 ctrl->prio = cpu_to_be16(domain | flow_attr->priority); 1548 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1549 ctrl->port = flow_attr->port; 1550 ctrl->qpn = cpu_to_be32(qp->qp_num); 1551 1552 ib_flow = flow_attr + 1; 1553 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1554 /* Add default flows */ 1555 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1556 if (default_flow >= 0) { 1557 ret = __mlx4_ib_create_default_rules( 1558 mdev, qp, default_table + default_flow, 1559 mailbox->buf + size); 1560 if (ret < 0) { 1561 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1562 return -EINVAL; 1563 } 1564 size += ret; 1565 } 1566 for (i = 0; i < flow_attr->num_of_specs; i++) { 1567 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1568 mailbox->buf + size); 1569 if (ret < 0) { 1570 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1571 return -EINVAL; 1572 } 1573 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1574 size += ret; 1575 } 1576 1577 if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR && 1578 flow_attr->num_of_specs == 1) { 1579 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1); 1580 enum ib_flow_spec_type header_spec = 1581 ((union ib_flow_spec *)(flow_attr + 1))->type; 1582 1583 if (header_spec == IB_FLOW_SPEC_ETH) 1584 mlx4_handle_eth_header_mcast_prio(ctrl, rule_header); 1585 } 1586 1587 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1588 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1589 MLX4_CMD_NATIVE); 1590 if (ret == -ENOMEM) 1591 pr_err("mcg table is full. Fail to register network rule.\n"); 1592 else if (ret == -ENXIO) 1593 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1594 else if (ret) 1595 pr_err("Invalid argument. Fail to register network rule.\n"); 1596 1597 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1598 return ret; 1599 } 1600 1601 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1602 { 1603 int err; 1604 err = mlx4_cmd(dev, reg_id, 0, 0, 1605 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1606 MLX4_CMD_NATIVE); 1607 if (err) 1608 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1609 reg_id); 1610 return err; 1611 } 1612 1613 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1614 u64 *reg_id) 1615 { 1616 void *ib_flow; 1617 union ib_flow_spec *ib_spec; 1618 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1619 int err = 0; 1620 1621 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 1622 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 1623 return 0; /* do nothing */ 1624 1625 ib_flow = flow_attr + 1; 1626 ib_spec = (union ib_flow_spec *)ib_flow; 1627 1628 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1629 return 0; /* do nothing */ 1630 1631 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1632 flow_attr->port, qp->qp_num, 1633 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1634 reg_id); 1635 return err; 1636 } 1637 1638 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev, 1639 struct ib_flow_attr *flow_attr, 1640 enum mlx4_net_trans_promisc_mode *type) 1641 { 1642 int err = 0; 1643 1644 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) || 1645 (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) || 1646 (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) { 1647 return -EOPNOTSUPP; 1648 } 1649 1650 if (flow_attr->num_of_specs == 0) { 1651 type[0] = MLX4_FS_MC_SNIFFER; 1652 type[1] = MLX4_FS_UC_SNIFFER; 1653 } else { 1654 union ib_flow_spec *ib_spec; 1655 1656 ib_spec = (union ib_flow_spec *)(flow_attr + 1); 1657 if (ib_spec->type != IB_FLOW_SPEC_ETH) 1658 return -EINVAL; 1659 1660 /* if all is zero than MC and UC */ 1661 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) { 1662 type[0] = MLX4_FS_MC_SNIFFER; 1663 type[1] = MLX4_FS_UC_SNIFFER; 1664 } else { 1665 u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01, 1666 ib_spec->eth.mask.dst_mac[1], 1667 ib_spec->eth.mask.dst_mac[2], 1668 ib_spec->eth.mask.dst_mac[3], 1669 ib_spec->eth.mask.dst_mac[4], 1670 ib_spec->eth.mask.dst_mac[5]}; 1671 1672 /* Above xor was only on MC bit, non empty mask is valid 1673 * only if this bit is set and rest are zero. 1674 */ 1675 if (!is_zero_ether_addr(&mac[0])) 1676 return -EINVAL; 1677 1678 if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac)) 1679 type[0] = MLX4_FS_MC_SNIFFER; 1680 else 1681 type[0] = MLX4_FS_UC_SNIFFER; 1682 } 1683 } 1684 1685 return err; 1686 } 1687 1688 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1689 struct ib_flow_attr *flow_attr, 1690 struct ib_udata *udata) 1691 { 1692 int err = 0, i = 0, j = 0; 1693 struct mlx4_ib_flow *mflow; 1694 enum mlx4_net_trans_promisc_mode type[2]; 1695 struct mlx4_dev *dev = (to_mdev(qp->device))->dev; 1696 int is_bonded = mlx4_is_bonded(dev); 1697 1698 if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP) 1699 return ERR_PTR(-EOPNOTSUPP); 1700 1701 if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 1702 (flow_attr->type != IB_FLOW_ATTR_NORMAL)) 1703 return ERR_PTR(-EOPNOTSUPP); 1704 1705 err = ib_is_udata_in_empty(udata); 1706 if (err) 1707 return ERR_PTR(err); 1708 1709 memset(type, 0, sizeof(type)); 1710 1711 mflow = kzalloc_obj(*mflow); 1712 if (!mflow) { 1713 err = -ENOMEM; 1714 goto err_free; 1715 } 1716 1717 switch (flow_attr->type) { 1718 case IB_FLOW_ATTR_NORMAL: 1719 /* If dont trap flag (continue match) is set, under specific 1720 * condition traffic be replicated to given qp, 1721 * without stealing it 1722 */ 1723 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) { 1724 err = mlx4_ib_add_dont_trap_rule(dev, 1725 flow_attr, 1726 type); 1727 if (err) 1728 goto err_free; 1729 } else { 1730 type[0] = MLX4_FS_REGULAR; 1731 } 1732 break; 1733 1734 case IB_FLOW_ATTR_ALL_DEFAULT: 1735 type[0] = MLX4_FS_ALL_DEFAULT; 1736 break; 1737 1738 case IB_FLOW_ATTR_MC_DEFAULT: 1739 type[0] = MLX4_FS_MC_DEFAULT; 1740 break; 1741 1742 case IB_FLOW_ATTR_SNIFFER: 1743 type[0] = MLX4_FS_MIRROR_RX_PORT; 1744 type[1] = MLX4_FS_MIRROR_SX_PORT; 1745 break; 1746 1747 default: 1748 err = -EINVAL; 1749 goto err_free; 1750 } 1751 1752 while (i < ARRAY_SIZE(type) && type[i]) { 1753 err = __mlx4_ib_create_flow(qp, flow_attr, MLX4_DOMAIN_UVERBS, 1754 type[i], &mflow->reg_id[i].id); 1755 if (err) 1756 goto err_create_flow; 1757 if (is_bonded) { 1758 /* Application always sees one port so the mirror rule 1759 * must be on port #2 1760 */ 1761 flow_attr->port = 2; 1762 err = __mlx4_ib_create_flow(qp, flow_attr, 1763 MLX4_DOMAIN_UVERBS, type[j], 1764 &mflow->reg_id[j].mirror); 1765 flow_attr->port = 1; 1766 if (err) 1767 goto err_create_flow; 1768 j++; 1769 } 1770 1771 i++; 1772 } 1773 1774 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1775 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1776 &mflow->reg_id[i].id); 1777 if (err) 1778 goto err_create_flow; 1779 1780 if (is_bonded) { 1781 flow_attr->port = 2; 1782 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1783 &mflow->reg_id[j].mirror); 1784 flow_attr->port = 1; 1785 if (err) 1786 goto err_create_flow; 1787 j++; 1788 } 1789 /* function to create mirror rule */ 1790 i++; 1791 } 1792 1793 return &mflow->ibflow; 1794 1795 err_create_flow: 1796 while (i) { 1797 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1798 mflow->reg_id[i].id); 1799 i--; 1800 } 1801 1802 while (j) { 1803 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1804 mflow->reg_id[j].mirror); 1805 j--; 1806 } 1807 err_free: 1808 kfree(mflow); 1809 return ERR_PTR(err); 1810 } 1811 1812 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1813 { 1814 int err, ret = 0; 1815 int i = 0; 1816 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1817 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1818 1819 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { 1820 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); 1821 if (err) 1822 ret = err; 1823 if (mflow->reg_id[i].mirror) { 1824 err = __mlx4_ib_destroy_flow(mdev->dev, 1825 mflow->reg_id[i].mirror); 1826 if (err) 1827 ret = err; 1828 } 1829 i++; 1830 } 1831 1832 kfree(mflow); 1833 return ret; 1834 } 1835 1836 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1837 { 1838 int err; 1839 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1840 struct mlx4_dev *dev = mdev->dev; 1841 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1842 struct mlx4_ib_steering *ib_steering = NULL; 1843 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1844 struct mlx4_flow_reg_id reg_id; 1845 1846 if (mdev->dev->caps.steering_mode == 1847 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1848 ib_steering = kmalloc_obj(*ib_steering); 1849 if (!ib_steering) 1850 return -ENOMEM; 1851 } 1852 1853 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1854 !!(mqp->flags & 1855 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1856 prot, ®_id.id); 1857 if (err) { 1858 pr_err("multicast attach op failed, err %d\n", err); 1859 goto err_malloc; 1860 } 1861 1862 reg_id.mirror = 0; 1863 if (mlx4_is_bonded(dev)) { 1864 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 1865 (mqp->port == 1) ? 2 : 1, 1866 !!(mqp->flags & 1867 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1868 prot, ®_id.mirror); 1869 if (err) 1870 goto err_add; 1871 } 1872 1873 err = add_gid_entry(ibqp, gid); 1874 if (err) 1875 goto err_add; 1876 1877 if (ib_steering) { 1878 memcpy(ib_steering->gid.raw, gid->raw, 16); 1879 ib_steering->reg_id = reg_id; 1880 mutex_lock(&mqp->mutex); 1881 list_add(&ib_steering->list, &mqp->steering_rules); 1882 mutex_unlock(&mqp->mutex); 1883 } 1884 return 0; 1885 1886 err_add: 1887 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1888 prot, reg_id.id); 1889 if (reg_id.mirror) 1890 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1891 prot, reg_id.mirror); 1892 err_malloc: 1893 kfree(ib_steering); 1894 1895 return err; 1896 } 1897 1898 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1899 { 1900 struct mlx4_ib_gid_entry *ge; 1901 struct mlx4_ib_gid_entry *tmp; 1902 struct mlx4_ib_gid_entry *ret = NULL; 1903 1904 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1905 if (!memcmp(raw, ge->gid.raw, 16)) { 1906 ret = ge; 1907 break; 1908 } 1909 } 1910 1911 return ret; 1912 } 1913 1914 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1915 { 1916 int err; 1917 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1918 struct mlx4_dev *dev = mdev->dev; 1919 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1920 struct net_device *ndev; 1921 struct mlx4_ib_gid_entry *ge; 1922 struct mlx4_flow_reg_id reg_id = {0, 0}; 1923 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1924 1925 if (mdev->dev->caps.steering_mode == 1926 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1927 struct mlx4_ib_steering *ib_steering; 1928 1929 mutex_lock(&mqp->mutex); 1930 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1931 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1932 list_del(&ib_steering->list); 1933 break; 1934 } 1935 } 1936 mutex_unlock(&mqp->mutex); 1937 if (&ib_steering->list == &mqp->steering_rules) { 1938 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1939 return -EINVAL; 1940 } 1941 reg_id = ib_steering->reg_id; 1942 kfree(ib_steering); 1943 } 1944 1945 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1946 prot, reg_id.id); 1947 if (err) 1948 return err; 1949 1950 if (mlx4_is_bonded(dev)) { 1951 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1952 prot, reg_id.mirror); 1953 if (err) 1954 return err; 1955 } 1956 1957 mutex_lock(&mqp->mutex); 1958 ge = find_gid_entry(mqp, gid->raw); 1959 if (ge) { 1960 spin_lock_bh(&mdev->iboe.lock); 1961 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1962 dev_hold(ndev); 1963 spin_unlock_bh(&mdev->iboe.lock); 1964 dev_put(ndev); 1965 list_del(&ge->list); 1966 kfree(ge); 1967 } else 1968 pr_warn("could not find mgid entry\n"); 1969 1970 mutex_unlock(&mqp->mutex); 1971 1972 return 0; 1973 } 1974 1975 static int init_node_data(struct mlx4_ib_dev *dev) 1976 { 1977 struct ib_smp *in_mad; 1978 struct ib_smp *out_mad; 1979 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1980 int err = -ENOMEM; 1981 1982 in_mad = kzalloc_obj(*in_mad); 1983 out_mad = kmalloc_obj(*out_mad); 1984 if (!in_mad || !out_mad) 1985 goto out; 1986 1987 ib_init_query_mad(in_mad); 1988 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1989 if (mlx4_is_master(dev->dev)) 1990 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1991 1992 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1993 if (err) 1994 goto out; 1995 1996 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 1997 1998 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1999 2000 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2001 if (err) 2002 goto out; 2003 2004 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 2005 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 2006 2007 out: 2008 kfree(in_mad); 2009 kfree(out_mad); 2010 return err; 2011 } 2012 2013 static ssize_t hca_type_show(struct device *device, 2014 struct device_attribute *attr, char *buf) 2015 { 2016 struct mlx4_ib_dev *dev = 2017 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2018 2019 return sysfs_emit(buf, "MT%d\n", dev->dev->persist->pdev->device); 2020 } 2021 static DEVICE_ATTR_RO(hca_type); 2022 2023 static ssize_t hw_rev_show(struct device *device, 2024 struct device_attribute *attr, char *buf) 2025 { 2026 struct mlx4_ib_dev *dev = 2027 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2028 2029 return sysfs_emit(buf, "%x\n", dev->dev->rev_id); 2030 } 2031 static DEVICE_ATTR_RO(hw_rev); 2032 2033 static ssize_t board_id_show(struct device *device, 2034 struct device_attribute *attr, char *buf) 2035 { 2036 struct mlx4_ib_dev *dev = 2037 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev); 2038 2039 return sysfs_emit(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id); 2040 } 2041 static DEVICE_ATTR_RO(board_id); 2042 2043 static struct attribute *mlx4_class_attributes[] = { 2044 &dev_attr_hw_rev.attr, 2045 &dev_attr_hca_type.attr, 2046 &dev_attr_board_id.attr, 2047 NULL 2048 }; 2049 2050 static const struct attribute_group mlx4_attr_group = { 2051 .attrs = mlx4_class_attributes, 2052 }; 2053 2054 struct diag_counter { 2055 const char *name; 2056 u32 offset; 2057 }; 2058 2059 #define DIAG_COUNTER(_name, _offset) \ 2060 { .name = #_name, .offset = _offset } 2061 2062 static const struct diag_counter diag_basic[] = { 2063 DIAG_COUNTER(rq_num_lle, 0x00), 2064 DIAG_COUNTER(sq_num_lle, 0x04), 2065 DIAG_COUNTER(rq_num_lqpoe, 0x08), 2066 DIAG_COUNTER(sq_num_lqpoe, 0x0C), 2067 DIAG_COUNTER(rq_num_lpe, 0x18), 2068 DIAG_COUNTER(sq_num_lpe, 0x1C), 2069 DIAG_COUNTER(rq_num_wrfe, 0x20), 2070 DIAG_COUNTER(sq_num_wrfe, 0x24), 2071 DIAG_COUNTER(sq_num_mwbe, 0x2C), 2072 DIAG_COUNTER(sq_num_bre, 0x34), 2073 DIAG_COUNTER(sq_num_rire, 0x44), 2074 DIAG_COUNTER(rq_num_rire, 0x48), 2075 DIAG_COUNTER(sq_num_rae, 0x4C), 2076 DIAG_COUNTER(rq_num_rae, 0x50), 2077 DIAG_COUNTER(sq_num_roe, 0x54), 2078 DIAG_COUNTER(sq_num_tree, 0x5C), 2079 DIAG_COUNTER(sq_num_rree, 0x64), 2080 DIAG_COUNTER(rq_num_rnr, 0x68), 2081 DIAG_COUNTER(sq_num_rnr, 0x6C), 2082 DIAG_COUNTER(rq_num_oos, 0x100), 2083 DIAG_COUNTER(sq_num_oos, 0x104), 2084 }; 2085 2086 static const struct diag_counter diag_ext[] = { 2087 DIAG_COUNTER(rq_num_dup, 0x130), 2088 DIAG_COUNTER(sq_num_to, 0x134), 2089 }; 2090 2091 static const struct diag_counter diag_device_only[] = { 2092 DIAG_COUNTER(num_cqovf, 0x1A0), 2093 DIAG_COUNTER(rq_num_udsdprd, 0x118), 2094 }; 2095 2096 static struct rdma_hw_stats * 2097 mlx4_ib_alloc_hw_device_stats(struct ib_device *ibdev) 2098 { 2099 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2100 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2101 2102 if (!diag[0].descs) 2103 return NULL; 2104 2105 return rdma_alloc_hw_stats_struct(diag[0].descs, diag[0].num_counters, 2106 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2107 } 2108 2109 static struct rdma_hw_stats * 2110 mlx4_ib_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num) 2111 { 2112 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2113 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2114 2115 if (!diag[1].descs) 2116 return NULL; 2117 2118 return rdma_alloc_hw_stats_struct(diag[1].descs, diag[1].num_counters, 2119 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2120 } 2121 2122 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev, 2123 struct rdma_hw_stats *stats, 2124 u32 port, int index) 2125 { 2126 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2127 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2128 u32 hw_value[ARRAY_SIZE(diag_device_only) + 2129 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {}; 2130 int ret; 2131 int i; 2132 2133 ret = mlx4_query_diag_counters(dev->dev, 2134 MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS, 2135 diag[!!port].offset, hw_value, 2136 diag[!!port].num_counters, port); 2137 2138 if (ret) 2139 return ret; 2140 2141 for (i = 0; i < diag[!!port].num_counters; i++) 2142 stats->value[i] = hw_value[i]; 2143 2144 return diag[!!port].num_counters; 2145 } 2146 2147 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev, 2148 struct rdma_stat_desc **pdescs, 2149 u32 **offset, u32 *num, bool port) 2150 { 2151 u32 num_counters; 2152 2153 num_counters = ARRAY_SIZE(diag_basic); 2154 2155 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) 2156 num_counters += ARRAY_SIZE(diag_ext); 2157 2158 if (!port) 2159 num_counters += ARRAY_SIZE(diag_device_only); 2160 2161 *pdescs = kzalloc_objs(struct rdma_stat_desc, num_counters); 2162 if (!*pdescs) 2163 return -ENOMEM; 2164 2165 *offset = kzalloc_objs(**offset, num_counters); 2166 if (!*offset) 2167 goto err; 2168 2169 *num = num_counters; 2170 2171 return 0; 2172 2173 err: 2174 kfree(*pdescs); 2175 return -ENOMEM; 2176 } 2177 2178 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev, 2179 struct rdma_stat_desc *descs, 2180 u32 *offset, bool port) 2181 { 2182 int i; 2183 int j; 2184 2185 for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) { 2186 descs[i].name = diag_basic[i].name; 2187 offset[i] = diag_basic[i].offset; 2188 } 2189 2190 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) { 2191 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) { 2192 descs[j].name = diag_ext[i].name; 2193 offset[j] = diag_ext[i].offset; 2194 } 2195 } 2196 2197 if (!port) { 2198 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) { 2199 descs[j].name = diag_device_only[i].name; 2200 offset[j] = diag_device_only[i].offset; 2201 } 2202 } 2203 } 2204 2205 static const struct ib_device_ops mlx4_ib_hw_stats_ops = { 2206 .alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats, 2207 .alloc_hw_port_stats = mlx4_ib_alloc_hw_port_stats, 2208 .get_hw_stats = mlx4_ib_get_hw_stats, 2209 }; 2210 2211 static const struct ib_device_ops mlx4_ib_hw_stats_ops1 = { 2212 .alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats, 2213 .get_hw_stats = mlx4_ib_get_hw_stats, 2214 }; 2215 2216 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev) 2217 { 2218 struct mlx4_ib_diag_counters *diag = ibdev->diag_counters; 2219 int i; 2220 int ret; 2221 bool per_port = !!(ibdev->dev->caps.flags2 & 2222 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT); 2223 2224 if (mlx4_is_slave(ibdev->dev)) 2225 return 0; 2226 2227 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2228 /* 2229 * i == 1 means we are building port counters, set a different 2230 * stats ops without port stats callback. 2231 */ 2232 if (i && !per_port) { 2233 ib_set_device_ops(&ibdev->ib_dev, 2234 &mlx4_ib_hw_stats_ops1); 2235 2236 return 0; 2237 } 2238 2239 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].descs, 2240 &diag[i].offset, 2241 &diag[i].num_counters, i); 2242 if (ret) 2243 goto err_alloc; 2244 2245 mlx4_ib_fill_diag_counters(ibdev, diag[i].descs, 2246 diag[i].offset, i); 2247 } 2248 2249 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops); 2250 2251 return 0; 2252 2253 err_alloc: 2254 if (i) { 2255 kfree(diag[i - 1].descs); 2256 kfree(diag[i - 1].offset); 2257 } 2258 2259 return ret; 2260 } 2261 2262 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev) 2263 { 2264 int i; 2265 2266 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2267 kfree(ibdev->diag_counters[i].offset); 2268 kfree(ibdev->diag_counters[i].descs); 2269 } 2270 } 2271 2272 #define MLX4_IB_INVALID_MAC ((u64)-1) 2273 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 2274 struct net_device *dev, 2275 int port) 2276 { 2277 u64 new_smac = 0; 2278 u64 release_mac = MLX4_IB_INVALID_MAC; 2279 struct mlx4_ib_qp *qp; 2280 2281 new_smac = ether_addr_to_u64(dev->dev_addr); 2282 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); 2283 2284 /* no need for update QP1 and mac registration in non-SRIOV */ 2285 if (!mlx4_is_mfunc(ibdev->dev)) 2286 return; 2287 2288 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 2289 qp = ibdev->qp1_proxy[port - 1]; 2290 if (qp) { 2291 int new_smac_index; 2292 u64 old_smac; 2293 struct mlx4_update_qp_params update_params; 2294 2295 mutex_lock(&qp->mutex); 2296 old_smac = qp->pri.smac; 2297 if (new_smac == old_smac) 2298 goto unlock; 2299 2300 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 2301 2302 if (new_smac_index < 0) 2303 goto unlock; 2304 2305 update_params.smac_index = new_smac_index; 2306 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, 2307 &update_params)) { 2308 release_mac = new_smac; 2309 goto unlock; 2310 } 2311 /* if old port was zero, no mac was yet registered for this QP */ 2312 if (qp->pri.smac_port) 2313 release_mac = old_smac; 2314 qp->pri.smac = new_smac; 2315 qp->pri.smac_port = port; 2316 qp->pri.smac_index = new_smac_index; 2317 } 2318 2319 unlock: 2320 if (release_mac != MLX4_IB_INVALID_MAC) 2321 mlx4_unregister_mac(ibdev->dev, port, release_mac); 2322 if (qp) 2323 mutex_unlock(&qp->mutex); 2324 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 2325 } 2326 2327 static void mlx4_ib_scan_netdev(struct mlx4_ib_dev *ibdev, 2328 struct net_device *dev, 2329 unsigned long event) 2330 2331 { 2332 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 2333 2334 ASSERT_RTNL(); 2335 2336 if (dev->dev.parent != ibdev->ib_dev.dev.parent) 2337 return; 2338 2339 spin_lock_bh(&iboe->lock); 2340 2341 iboe->netdevs[dev->dev_port] = event != NETDEV_UNREGISTER ? dev : NULL; 2342 2343 spin_unlock_bh(&iboe->lock); 2344 2345 if (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER) 2346 mlx4_ib_update_qps(ibdev, dev, dev->dev_port + 1); 2347 } 2348 2349 static void mlx4_ib_port_event(struct ib_device *ibdev, struct net_device *ndev, 2350 unsigned long event) 2351 { 2352 struct mlx4_ib_dev *mlx4_ibdev = 2353 container_of(ibdev, struct mlx4_ib_dev, ib_dev); 2354 struct mlx4_ib_iboe *iboe = &mlx4_ibdev->iboe; 2355 2356 if (!net_eq(dev_net(ndev), &init_net)) 2357 return; 2358 2359 ASSERT_RTNL(); 2360 2361 if (ndev->dev.parent != mlx4_ibdev->ib_dev.dev.parent) 2362 return; 2363 2364 spin_lock_bh(&iboe->lock); 2365 2366 iboe->netdevs[ndev->dev_port] = event != NETDEV_UNREGISTER ? ndev : NULL; 2367 2368 if (event == NETDEV_UP || event == NETDEV_DOWN) 2369 ib_dispatch_port_state_event(&mlx4_ibdev->ib_dev, ndev); 2370 2371 spin_unlock_bh(&iboe->lock); 2372 2373 if (event == NETDEV_UP || event == NETDEV_CHANGE) 2374 mlx4_ib_update_qps(mlx4_ibdev, ndev, ndev->dev_port + 1); 2375 } 2376 2377 static int mlx4_ib_netdev_event(struct notifier_block *this, 2378 unsigned long event, void *ptr) 2379 { 2380 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 2381 struct mlx4_ib_dev *ibdev; 2382 2383 if (!net_eq(dev_net(dev), &init_net)) 2384 return NOTIFY_DONE; 2385 2386 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 2387 mlx4_ib_scan_netdev(ibdev, dev, event); 2388 2389 return NOTIFY_DONE; 2390 } 2391 2392 static void init_pkeys(struct mlx4_ib_dev *ibdev) 2393 { 2394 int port; 2395 int slave; 2396 int i; 2397 2398 if (mlx4_is_master(ibdev->dev)) { 2399 for (slave = 0; slave <= ibdev->dev->persist->num_vfs; 2400 ++slave) { 2401 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2402 for (i = 0; 2403 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2404 ++i) { 2405 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 2406 /* master has the identity virt2phys pkey mapping */ 2407 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 2408 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 2409 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 2410 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 2411 } 2412 } 2413 } 2414 /* initialize pkey cache */ 2415 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2416 for (i = 0; 2417 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2418 ++i) 2419 ibdev->pkeys.phys_pkey_cache[port-1][i] = 2420 (i) ? 0 : 0xFFFF; 2421 } 2422 } 2423 } 2424 2425 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2426 { 2427 int i, j, eq = 0, total_eqs = 0; 2428 2429 ibdev->eq_table = kzalloc_objs(ibdev->eq_table[0], 2430 dev->caps.num_comp_vectors); 2431 if (!ibdev->eq_table) 2432 return; 2433 2434 for (i = 1; i <= dev->caps.num_ports; i++) { 2435 for (j = 0; j < mlx4_get_eqs_per_port(dev, i); 2436 j++, total_eqs++) { 2437 if (i > 1 && mlx4_is_eq_shared(dev, total_eqs)) 2438 continue; 2439 ibdev->eq_table[eq] = total_eqs; 2440 if (!mlx4_assign_eq(dev, i, 2441 &ibdev->eq_table[eq])) 2442 eq++; 2443 else 2444 ibdev->eq_table[eq] = -1; 2445 } 2446 } 2447 2448 for (i = eq; i < dev->caps.num_comp_vectors; 2449 ibdev->eq_table[i++] = -1) 2450 ; 2451 2452 /* Advertise the new number of EQs to clients */ 2453 ibdev->ib_dev.num_comp_vectors = eq; 2454 } 2455 2456 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2457 { 2458 int i; 2459 int total_eqs = ibdev->ib_dev.num_comp_vectors; 2460 2461 /* no eqs were allocated */ 2462 if (!ibdev->eq_table) 2463 return; 2464 2465 /* Reset the advertised EQ number */ 2466 ibdev->ib_dev.num_comp_vectors = 0; 2467 2468 for (i = 0; i < total_eqs; i++) 2469 mlx4_release_eq(dev, ibdev->eq_table[i]); 2470 2471 kfree(ibdev->eq_table); 2472 ibdev->eq_table = NULL; 2473 } 2474 2475 static int mlx4_port_immutable(struct ib_device *ibdev, u32 port_num, 2476 struct ib_port_immutable *immutable) 2477 { 2478 struct ib_port_attr attr; 2479 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 2480 int err; 2481 2482 if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) { 2483 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 2484 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2485 } else { 2486 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) 2487 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 2488 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 2489 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE | 2490 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2491 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET; 2492 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE | 2493 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP)) 2494 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2495 } 2496 2497 err = ib_query_port(ibdev, port_num, &attr); 2498 if (err) 2499 return err; 2500 2501 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2502 immutable->gid_tbl_len = attr.gid_tbl_len; 2503 2504 return 0; 2505 } 2506 2507 static void get_fw_ver_str(struct ib_device *device, char *str) 2508 { 2509 struct mlx4_ib_dev *dev = 2510 container_of(device, struct mlx4_ib_dev, ib_dev); 2511 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d", 2512 (int) (dev->dev->caps.fw_ver >> 32), 2513 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 2514 (int) dev->dev->caps.fw_ver & 0xffff); 2515 } 2516 2517 static const struct ib_device_ops mlx4_ib_dev_ops = { 2518 .owner = THIS_MODULE, 2519 .driver_id = RDMA_DRIVER_MLX4, 2520 .uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION, 2521 2522 .add_gid = mlx4_ib_add_gid, 2523 .alloc_mr = mlx4_ib_alloc_mr, 2524 .alloc_pd = mlx4_ib_alloc_pd, 2525 .alloc_ucontext = mlx4_ib_alloc_ucontext, 2526 .attach_mcast = mlx4_ib_mcg_attach, 2527 .create_ah = mlx4_ib_create_ah, 2528 .create_cq = mlx4_ib_create_cq, 2529 .create_user_cq = mlx4_ib_create_user_cq, 2530 .create_qp = mlx4_ib_create_qp, 2531 .create_srq = mlx4_ib_create_srq, 2532 .dealloc_pd = mlx4_ib_dealloc_pd, 2533 .dealloc_ucontext = mlx4_ib_dealloc_ucontext, 2534 .del_gid = mlx4_ib_del_gid, 2535 .dereg_mr = mlx4_ib_dereg_mr, 2536 .destroy_ah = mlx4_ib_destroy_ah, 2537 .destroy_cq = mlx4_ib_destroy_cq, 2538 .destroy_qp = mlx4_ib_destroy_qp, 2539 .destroy_srq = mlx4_ib_destroy_srq, 2540 .detach_mcast = mlx4_ib_mcg_detach, 2541 .device_group = &mlx4_attr_group, 2542 .disassociate_ucontext = mlx4_ib_disassociate_ucontext, 2543 .drain_rq = mlx4_ib_drain_rq, 2544 .drain_sq = mlx4_ib_drain_sq, 2545 .get_dev_fw_str = get_fw_ver_str, 2546 .get_dma_mr = mlx4_ib_get_dma_mr, 2547 .get_link_layer = mlx4_ib_port_link_layer, 2548 .get_netdev = mlx4_ib_get_netdev, 2549 .get_port_immutable = mlx4_port_immutable, 2550 .map_mr_sg = mlx4_ib_map_mr_sg, 2551 .mmap = mlx4_ib_mmap, 2552 .modify_cq = mlx4_ib_modify_cq, 2553 .modify_device = mlx4_ib_modify_device, 2554 .modify_port = mlx4_ib_modify_port, 2555 .modify_qp = mlx4_ib_modify_qp, 2556 .modify_srq = mlx4_ib_modify_srq, 2557 .poll_cq = mlx4_ib_poll_cq, 2558 .post_recv = mlx4_ib_post_recv, 2559 .post_send = mlx4_ib_post_send, 2560 .post_srq_recv = mlx4_ib_post_srq_recv, 2561 .process_mad = mlx4_ib_process_mad, 2562 .query_ah = mlx4_ib_query_ah, 2563 .query_device = mlx4_ib_query_device, 2564 .query_gid = mlx4_ib_query_gid, 2565 .query_pkey = mlx4_ib_query_pkey, 2566 .query_port = mlx4_ib_query_port, 2567 .query_qp = mlx4_ib_query_qp, 2568 .query_srq = mlx4_ib_query_srq, 2569 .reg_user_mr = mlx4_ib_reg_user_mr, 2570 .req_notify_cq = mlx4_ib_arm_cq, 2571 .rereg_user_mr = mlx4_ib_rereg_user_mr, 2572 .resize_user_cq = mlx4_ib_resize_cq, 2573 .report_port_event = mlx4_ib_port_event, 2574 2575 INIT_RDMA_OBJ_SIZE(ib_ah, mlx4_ib_ah, ibah), 2576 INIT_RDMA_OBJ_SIZE(ib_cq, mlx4_ib_cq, ibcq), 2577 INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd), 2578 INIT_RDMA_OBJ_SIZE(ib_qp, mlx4_ib_qp, ibqp), 2579 INIT_RDMA_OBJ_SIZE(ib_srq, mlx4_ib_srq, ibsrq), 2580 INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext), 2581 }; 2582 2583 static const struct ib_device_ops mlx4_ib_dev_wq_ops = { 2584 .create_rwq_ind_table = mlx4_ib_create_rwq_ind_table, 2585 .create_wq = mlx4_ib_create_wq, 2586 .destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table, 2587 .destroy_wq = mlx4_ib_destroy_wq, 2588 .modify_wq = mlx4_ib_modify_wq, 2589 2590 INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx4_ib_rwq_ind_table, 2591 ib_rwq_ind_tbl), 2592 }; 2593 2594 static const struct ib_device_ops mlx4_ib_dev_mw_ops = { 2595 .alloc_mw = mlx4_ib_alloc_mw, 2596 .dealloc_mw = mlx4_ib_dealloc_mw, 2597 2598 INIT_RDMA_OBJ_SIZE(ib_mw, mlx4_ib_mw, ibmw), 2599 }; 2600 2601 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = { 2602 .alloc_xrcd = mlx4_ib_alloc_xrcd, 2603 .dealloc_xrcd = mlx4_ib_dealloc_xrcd, 2604 2605 INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx4_ib_xrcd, ibxrcd), 2606 }; 2607 2608 static const struct ib_device_ops mlx4_ib_dev_fs_ops = { 2609 .create_flow = mlx4_ib_create_flow, 2610 .destroy_flow = mlx4_ib_destroy_flow, 2611 }; 2612 2613 static int mlx4_ib_probe(struct auxiliary_device *adev, 2614 const struct auxiliary_device_id *id) 2615 { 2616 struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev); 2617 struct mlx4_dev *dev = madev->mdev; 2618 struct mlx4_ib_dev *ibdev; 2619 int num_ports = 0; 2620 int i, j; 2621 int err; 2622 struct mlx4_ib_iboe *iboe; 2623 int ib_num_ports = 0; 2624 int num_req_counters; 2625 int allocated; 2626 u32 counter_index; 2627 struct counter_index *new_counter_index; 2628 2629 pr_info_once("%s", mlx4_ib_version); 2630 2631 num_ports = 0; 2632 mlx4_foreach_ib_transport_port(i, dev) 2633 num_ports++; 2634 2635 /* No point in registering a device with no ports... */ 2636 if (num_ports == 0) 2637 return -ENODEV; 2638 2639 ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev); 2640 if (!ibdev) { 2641 dev_err(&dev->persist->pdev->dev, 2642 "Device struct alloc failed\n"); 2643 return -ENOMEM; 2644 } 2645 2646 iboe = &ibdev->iboe; 2647 2648 err = mlx4_pd_alloc(dev, &ibdev->priv_pdn); 2649 if (err) 2650 goto err_dealloc; 2651 2652 err = mlx4_uar_alloc(dev, &ibdev->priv_uar); 2653 if (err) 2654 goto err_pd; 2655 2656 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 2657 PAGE_SIZE); 2658 if (!ibdev->uar_map) { 2659 err = -ENOMEM; 2660 goto err_uar; 2661 } 2662 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 2663 2664 ibdev->dev = dev; 2665 ibdev->bond_next_port = 0; 2666 2667 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 2668 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 2669 ibdev->num_ports = num_ports; 2670 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ? 2671 1 : ibdev->num_ports; 2672 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2673 ibdev->ib_dev.dev.parent = &dev->persist->pdev->dev; 2674 2675 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops); 2676 2677 if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) && 2678 ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) == 2679 IB_LINK_LAYER_ETHERNET) || 2680 (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) == 2681 IB_LINK_LAYER_ETHERNET))) 2682 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops); 2683 2684 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2685 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) 2686 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops); 2687 2688 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2689 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops); 2690 } 2691 2692 if (check_flow_steering_support(dev)) { 2693 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2694 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops); 2695 } 2696 2697 if (!dev->caps.userspace_caps) 2698 ibdev->ib_dev.ops.uverbs_abi_ver = 2699 MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 2700 2701 mlx4_ib_alloc_eqs(dev, ibdev); 2702 2703 spin_lock_init(&iboe->lock); 2704 2705 err = init_node_data(ibdev); 2706 if (err) 2707 goto err_map; 2708 mlx4_init_sl2vl_tbl(ibdev); 2709 2710 for (i = 0; i < ibdev->num_ports; ++i) { 2711 mutex_init(&ibdev->counters_table[i].mutex); 2712 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list); 2713 iboe->last_port_state[i] = IB_PORT_DOWN; 2714 } 2715 2716 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; 2717 for (i = 0; i < num_req_counters; ++i) { 2718 mutex_init(&ibdev->qp1_proxy_lock[i]); 2719 allocated = 0; 2720 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2721 IB_LINK_LAYER_ETHERNET) { 2722 err = mlx4_counter_alloc(ibdev->dev, &counter_index, 2723 MLX4_RES_USAGE_DRIVER); 2724 /* if failed to allocate a new counter, use default */ 2725 if (err) 2726 counter_index = 2727 mlx4_get_default_counter_index(dev, 2728 i + 1); 2729 else 2730 allocated = 1; 2731 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */ 2732 counter_index = mlx4_get_default_counter_index(dev, 2733 i + 1); 2734 } 2735 new_counter_index = kmalloc_obj(*new_counter_index); 2736 if (!new_counter_index) { 2737 err = -ENOMEM; 2738 if (allocated) 2739 mlx4_counter_free(ibdev->dev, counter_index); 2740 goto err_counter; 2741 } 2742 new_counter_index->index = counter_index; 2743 new_counter_index->allocated = allocated; 2744 list_add_tail(&new_counter_index->list, 2745 &ibdev->counters_table[i].counters_list); 2746 ibdev->counters_table[i].default_counter = counter_index; 2747 pr_info("counter index %d for port %d allocated %d\n", 2748 counter_index, i + 1, allocated); 2749 } 2750 if (mlx4_is_bonded(dev)) 2751 for (i = 1; i < ibdev->num_ports ; ++i) { 2752 new_counter_index = 2753 kmalloc_obj(struct counter_index); 2754 if (!new_counter_index) { 2755 err = -ENOMEM; 2756 goto err_counter; 2757 } 2758 new_counter_index->index = counter_index; 2759 new_counter_index->allocated = 0; 2760 list_add_tail(&new_counter_index->list, 2761 &ibdev->counters_table[i].counters_list); 2762 ibdev->counters_table[i].default_counter = 2763 counter_index; 2764 } 2765 2766 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2767 ib_num_ports++; 2768 2769 spin_lock_init(&ibdev->sm_lock); 2770 mutex_init(&ibdev->cap_mask_mutex); 2771 INIT_LIST_HEAD(&ibdev->qp_list); 2772 spin_lock_init(&ibdev->reset_flow_resource_lock); 2773 2774 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2775 ib_num_ports) { 2776 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2777 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2778 MLX4_IB_UC_STEER_QPN_ALIGN, 2779 &ibdev->steer_qpn_base, 0, 2780 MLX4_RES_USAGE_DRIVER); 2781 if (err) 2782 goto err_counter; 2783 2784 ibdev->ib_uc_qpns_bitmap = bitmap_alloc(ibdev->steer_qpn_count, 2785 GFP_KERNEL); 2786 if (!ibdev->ib_uc_qpns_bitmap) { 2787 err = -ENOMEM; 2788 goto err_steer_qp_release; 2789 } 2790 2791 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) { 2792 bitmap_zero(ibdev->ib_uc_qpns_bitmap, 2793 ibdev->steer_qpn_count); 2794 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2795 dev, ibdev->steer_qpn_base, 2796 ibdev->steer_qpn_base + 2797 ibdev->steer_qpn_count - 1); 2798 if (err) 2799 goto err_steer_free_bitmap; 2800 } else { 2801 bitmap_fill(ibdev->ib_uc_qpns_bitmap, 2802 ibdev->steer_qpn_count); 2803 } 2804 } 2805 2806 for (j = 1; j <= ibdev->dev->caps.num_ports; j++) 2807 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); 2808 2809 err = mlx4_ib_alloc_diag_counters(ibdev); 2810 if (err) 2811 goto err_steer_free_bitmap; 2812 2813 err = ib_register_device(&ibdev->ib_dev, "mlx4_%d", 2814 &dev->persist->pdev->dev); 2815 if (err) 2816 goto err_diag_counters; 2817 2818 err = mlx4_ib_mad_init(ibdev); 2819 if (err) 2820 goto err_reg; 2821 2822 err = mlx4_ib_init_sriov(ibdev); 2823 if (err) 2824 goto err_mad; 2825 2826 if (!iboe->nb.notifier_call) { 2827 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2828 err = register_netdevice_notifier(&iboe->nb); 2829 if (err) { 2830 iboe->nb.notifier_call = NULL; 2831 goto err_notif; 2832 } 2833 } 2834 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { 2835 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT); 2836 if (err) 2837 goto err_notif; 2838 } 2839 2840 ibdev->ib_active = true; 2841 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2842 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i), 2843 &ibdev->ib_dev); 2844 2845 if (mlx4_is_mfunc(ibdev->dev)) 2846 init_pkeys(ibdev); 2847 2848 /* create paravirt contexts for any VFs which are active */ 2849 if (mlx4_is_master(ibdev->dev)) { 2850 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2851 if (j == mlx4_master_func_num(ibdev->dev)) 2852 continue; 2853 if (mlx4_is_slave_active(ibdev->dev, j)) 2854 do_slave_init(ibdev, j, 1); 2855 } 2856 } 2857 2858 /* register mlx4 core notifier */ 2859 ibdev->mlx_nb.notifier_call = mlx4_ib_event; 2860 err = mlx4_register_event_notifier(dev, &ibdev->mlx_nb); 2861 WARN(err, "failed to register mlx4 event notifier (%d)", err); 2862 2863 auxiliary_set_drvdata(adev, ibdev); 2864 return 0; 2865 2866 err_notif: 2867 if (ibdev->iboe.nb.notifier_call) { 2868 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2869 pr_warn("failure unregistering notifier\n"); 2870 ibdev->iboe.nb.notifier_call = NULL; 2871 } 2872 flush_workqueue(wq); 2873 2874 mlx4_ib_close_sriov(ibdev); 2875 2876 err_mad: 2877 mlx4_ib_mad_cleanup(ibdev); 2878 2879 err_reg: 2880 ib_unregister_device(&ibdev->ib_dev); 2881 2882 err_diag_counters: 2883 mlx4_ib_diag_cleanup(ibdev); 2884 2885 err_steer_free_bitmap: 2886 bitmap_free(ibdev->ib_uc_qpns_bitmap); 2887 2888 err_steer_qp_release: 2889 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2890 ibdev->steer_qpn_count); 2891 err_counter: 2892 for (i = 0; i < ibdev->num_ports; ++i) 2893 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]); 2894 2895 err_map: 2896 mlx4_ib_free_eqs(dev, ibdev); 2897 iounmap(ibdev->uar_map); 2898 2899 err_uar: 2900 mlx4_uar_free(dev, &ibdev->priv_uar); 2901 2902 err_pd: 2903 mlx4_pd_free(dev, ibdev->priv_pdn); 2904 2905 err_dealloc: 2906 ib_dealloc_device(&ibdev->ib_dev); 2907 2908 return err; 2909 } 2910 2911 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2912 { 2913 int offset; 2914 2915 WARN_ON(!dev->ib_uc_qpns_bitmap); 2916 2917 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2918 dev->steer_qpn_count, 2919 get_count_order(count)); 2920 if (offset < 0) 2921 return offset; 2922 2923 *qpn = dev->steer_qpn_base + offset; 2924 return 0; 2925 } 2926 2927 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2928 { 2929 if (!qpn || 2930 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2931 return; 2932 2933 if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n", 2934 qpn, dev->steer_qpn_base)) 2935 /* not supposed to be here */ 2936 return; 2937 2938 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2939 qpn - dev->steer_qpn_base, 2940 get_count_order(count)); 2941 } 2942 2943 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2944 int is_attach) 2945 { 2946 int err; 2947 size_t flow_size; 2948 struct ib_flow_attr *flow; 2949 struct ib_flow_spec_ib *ib_spec; 2950 2951 if (is_attach) { 2952 flow_size = sizeof(struct ib_flow_attr) + 2953 sizeof(struct ib_flow_spec_ib); 2954 flow = kzalloc(flow_size, GFP_KERNEL); 2955 if (!flow) 2956 return -ENOMEM; 2957 flow->port = mqp->port; 2958 flow->num_of_specs = 1; 2959 flow->size = flow_size; 2960 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2961 ib_spec->type = IB_FLOW_SPEC_IB; 2962 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2963 /* Add an empty rule for IB L2 */ 2964 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2965 2966 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, MLX4_DOMAIN_NIC, 2967 MLX4_FS_REGULAR, &mqp->reg_id); 2968 kfree(flow); 2969 return err; 2970 } 2971 2972 return __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2973 } 2974 2975 static void mlx4_ib_remove(struct auxiliary_device *adev) 2976 { 2977 struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev); 2978 struct mlx4_dev *dev = madev->mdev; 2979 struct mlx4_ib_dev *ibdev = auxiliary_get_drvdata(adev); 2980 int p; 2981 int i; 2982 2983 mlx4_unregister_event_notifier(dev, &ibdev->mlx_nb); 2984 2985 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2986 devlink_port_type_clear(mlx4_get_devlink_port(dev, i)); 2987 ibdev->ib_active = false; 2988 flush_workqueue(wq); 2989 2990 if (ibdev->iboe.nb.notifier_call) { 2991 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2992 pr_warn("failure unregistering notifier\n"); 2993 ibdev->iboe.nb.notifier_call = NULL; 2994 } 2995 2996 mlx4_ib_close_sriov(ibdev); 2997 mlx4_ib_mad_cleanup(ibdev); 2998 ib_unregister_device(&ibdev->ib_dev); 2999 mlx4_ib_diag_cleanup(ibdev); 3000 3001 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 3002 ibdev->steer_qpn_count); 3003 bitmap_free(ibdev->ib_uc_qpns_bitmap); 3004 3005 iounmap(ibdev->uar_map); 3006 for (p = 0; p < ibdev->num_ports; ++p) 3007 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]); 3008 3009 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 3010 mlx4_CLOSE_PORT(dev, p); 3011 3012 mlx4_ib_free_eqs(dev, ibdev); 3013 3014 mlx4_uar_free(dev, &ibdev->priv_uar); 3015 mlx4_pd_free(dev, ibdev->priv_pdn); 3016 ib_dealloc_device(&ibdev->ib_dev); 3017 } 3018 3019 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 3020 { 3021 struct mlx4_ib_demux_work **dm; 3022 struct mlx4_dev *dev = ibdev->dev; 3023 int i; 3024 unsigned long flags; 3025 struct mlx4_active_ports actv_ports; 3026 unsigned int ports; 3027 unsigned int first_port; 3028 3029 if (!mlx4_is_master(dev)) 3030 return; 3031 3032 actv_ports = mlx4_get_active_ports(dev, slave); 3033 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 3034 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 3035 3036 dm = kzalloc_objs(*dm, ports, GFP_ATOMIC); 3037 if (!dm) 3038 return; 3039 3040 for (i = 0; i < ports; i++) { 3041 dm[i] = kmalloc_obj(struct mlx4_ib_demux_work, GFP_ATOMIC); 3042 if (!dm[i]) { 3043 while (--i >= 0) 3044 kfree(dm[i]); 3045 goto out; 3046 } 3047 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 3048 dm[i]->port = first_port + i + 1; 3049 dm[i]->slave = slave; 3050 dm[i]->do_init = do_init; 3051 dm[i]->dev = ibdev; 3052 } 3053 /* initialize or tear down tunnel QPs for the slave */ 3054 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 3055 if (!ibdev->sriov.is_going_down) { 3056 for (i = 0; i < ports; i++) 3057 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 3058 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3059 } else { 3060 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3061 for (i = 0; i < ports; i++) 3062 kfree(dm[i]); 3063 } 3064 out: 3065 kfree(dm); 3066 return; 3067 } 3068 3069 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev) 3070 { 3071 struct mlx4_ib_qp *mqp; 3072 unsigned long flags_qp; 3073 unsigned long flags_cq; 3074 struct mlx4_ib_cq *send_mcq, *recv_mcq; 3075 struct list_head cq_notify_list; 3076 struct mlx4_cq *mcq; 3077 unsigned long flags; 3078 3079 pr_warn("mlx4_ib_handle_catas_error was started\n"); 3080 INIT_LIST_HEAD(&cq_notify_list); 3081 3082 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 3083 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 3084 3085 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 3086 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 3087 if (mqp->sq.tail != mqp->sq.head) { 3088 send_mcq = to_mcq(mqp->ibqp.send_cq); 3089 spin_lock_irqsave(&send_mcq->lock, flags_cq); 3090 if (send_mcq->mcq.comp && 3091 mqp->ibqp.send_cq->comp_handler) { 3092 if (!send_mcq->mcq.reset_notify_added) { 3093 send_mcq->mcq.reset_notify_added = 1; 3094 list_add_tail(&send_mcq->mcq.reset_notify, 3095 &cq_notify_list); 3096 } 3097 } 3098 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 3099 } 3100 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 3101 /* Now, handle the QP's receive queue */ 3102 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 3103 /* no handling is needed for SRQ */ 3104 if (!mqp->ibqp.srq) { 3105 if (mqp->rq.tail != mqp->rq.head) { 3106 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 3107 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 3108 if (recv_mcq->mcq.comp && 3109 mqp->ibqp.recv_cq->comp_handler) { 3110 if (!recv_mcq->mcq.reset_notify_added) { 3111 recv_mcq->mcq.reset_notify_added = 1; 3112 list_add_tail(&recv_mcq->mcq.reset_notify, 3113 &cq_notify_list); 3114 } 3115 } 3116 spin_unlock_irqrestore(&recv_mcq->lock, 3117 flags_cq); 3118 } 3119 } 3120 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 3121 } 3122 3123 list_for_each_entry(mcq, &cq_notify_list, reset_notify) { 3124 mcq->comp(mcq); 3125 } 3126 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 3127 pr_warn("mlx4_ib_handle_catas_error ended\n"); 3128 } 3129 3130 static void handle_bonded_port_state_event(struct work_struct *work) 3131 { 3132 struct ib_event_work *ew = 3133 container_of(work, struct ib_event_work, work); 3134 struct mlx4_ib_dev *ibdev = ew->ib_dev; 3135 enum ib_port_state bonded_port_state = IB_PORT_NOP; 3136 int i; 3137 struct ib_event ibev; 3138 3139 kfree(ew); 3140 spin_lock_bh(&ibdev->iboe.lock); 3141 for (i = 0; i < MLX4_MAX_PORTS; ++i) { 3142 struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; 3143 enum ib_port_state curr_port_state; 3144 3145 if (!curr_netdev) 3146 continue; 3147 3148 curr_port_state = 3149 (netif_running(curr_netdev) && 3150 netif_carrier_ok(curr_netdev)) ? 3151 IB_PORT_ACTIVE : IB_PORT_DOWN; 3152 3153 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ? 3154 curr_port_state : IB_PORT_ACTIVE; 3155 } 3156 spin_unlock_bh(&ibdev->iboe.lock); 3157 3158 ibev.device = &ibdev->ib_dev; 3159 ibev.element.port_num = 1; 3160 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ? 3161 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 3162 3163 ib_dispatch_event(&ibev); 3164 } 3165 3166 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port) 3167 { 3168 u64 sl2vl; 3169 int err; 3170 3171 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl); 3172 if (err) { 3173 pr_err("Unable to get current sl to vl mapping for port %d. Using all zeroes (%d)\n", 3174 port, err); 3175 sl2vl = 0; 3176 } 3177 atomic64_set(&mdev->sl2vl[port - 1], sl2vl); 3178 } 3179 3180 static void ib_sl2vl_update_work(struct work_struct *work) 3181 { 3182 struct ib_event_work *ew = container_of(work, struct ib_event_work, work); 3183 struct mlx4_ib_dev *mdev = ew->ib_dev; 3184 int port = ew->port; 3185 3186 mlx4_ib_sl2vl_update(mdev, port); 3187 3188 kfree(ew); 3189 } 3190 3191 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev, 3192 int port) 3193 { 3194 struct ib_event_work *ew; 3195 3196 ew = kmalloc_obj(*ew, GFP_ATOMIC); 3197 if (ew) { 3198 INIT_WORK(&ew->work, ib_sl2vl_update_work); 3199 ew->port = port; 3200 ew->ib_dev = ibdev; 3201 queue_work(wq, &ew->work); 3202 } 3203 } 3204 3205 static int mlx4_ib_event(struct notifier_block *this, unsigned long event, 3206 void *param) 3207 { 3208 struct mlx4_ib_dev *ibdev = 3209 container_of(this, struct mlx4_ib_dev, mlx_nb); 3210 struct mlx4_dev *dev = ibdev->dev; 3211 struct ib_event ibev; 3212 struct mlx4_eqe *eqe = NULL; 3213 struct ib_event_work *ew; 3214 int p = 0; 3215 3216 if (mlx4_is_bonded(dev) && 3217 ((event == MLX4_DEV_EVENT_PORT_UP) || 3218 (event == MLX4_DEV_EVENT_PORT_DOWN))) { 3219 ew = kmalloc_obj(*ew, GFP_ATOMIC); 3220 if (!ew) 3221 return NOTIFY_DONE; 3222 INIT_WORK(&ew->work, handle_bonded_port_state_event); 3223 ew->ib_dev = ibdev; 3224 queue_work(wq, &ew->work); 3225 return NOTIFY_DONE; 3226 } 3227 3228 switch (event) { 3229 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 3230 break; 3231 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 3232 eqe = (struct mlx4_eqe *)param; 3233 break; 3234 default: 3235 p = *(int *)param; 3236 break; 3237 } 3238 3239 switch (event) { 3240 case MLX4_DEV_EVENT_PORT_UP: 3241 if (p > ibdev->num_ports) 3242 return NOTIFY_DONE; 3243 if (!mlx4_is_slave(dev) && 3244 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 3245 IB_LINK_LAYER_INFINIBAND) { 3246 if (mlx4_is_master(dev)) 3247 mlx4_ib_invalidate_all_guid_record(ibdev, p); 3248 if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST && 3249 !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT)) 3250 mlx4_sched_ib_sl2vl_update_work(ibdev, p); 3251 } 3252 ibev.event = IB_EVENT_PORT_ACTIVE; 3253 break; 3254 3255 case MLX4_DEV_EVENT_PORT_DOWN: 3256 if (p > ibdev->num_ports) 3257 return NOTIFY_DONE; 3258 ibev.event = IB_EVENT_PORT_ERR; 3259 break; 3260 3261 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 3262 ibdev->ib_active = false; 3263 ibev.event = IB_EVENT_DEVICE_FATAL; 3264 mlx4_ib_handle_catas_error(ibdev); 3265 break; 3266 3267 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 3268 ew = kmalloc_obj(*ew, GFP_ATOMIC); 3269 if (!ew) 3270 return NOTIFY_DONE; 3271 3272 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 3273 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 3274 ew->ib_dev = ibdev; 3275 /* need to queue only for port owner, which uses GEN_EQE */ 3276 if (mlx4_is_master(dev)) 3277 queue_work(wq, &ew->work); 3278 else 3279 handle_port_mgmt_change_event(&ew->work); 3280 return NOTIFY_DONE; 3281 3282 case MLX4_DEV_EVENT_SLAVE_INIT: 3283 /* here, p is the slave id */ 3284 do_slave_init(ibdev, p, 1); 3285 if (mlx4_is_master(dev)) { 3286 int i; 3287 3288 for (i = 1; i <= ibdev->num_ports; i++) { 3289 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3290 == IB_LINK_LAYER_INFINIBAND) 3291 mlx4_ib_slave_alias_guid_event(ibdev, 3292 p, i, 3293 1); 3294 } 3295 } 3296 return NOTIFY_DONE; 3297 3298 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 3299 if (mlx4_is_master(dev)) { 3300 int i; 3301 3302 for (i = 1; i <= ibdev->num_ports; i++) { 3303 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3304 == IB_LINK_LAYER_INFINIBAND) 3305 mlx4_ib_slave_alias_guid_event(ibdev, 3306 p, i, 3307 0); 3308 } 3309 } 3310 /* here, p is the slave id */ 3311 do_slave_init(ibdev, p, 0); 3312 return NOTIFY_DONE; 3313 3314 default: 3315 return NOTIFY_DONE; 3316 } 3317 3318 ibev.device = &ibdev->ib_dev; 3319 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; 3320 3321 ib_dispatch_event(&ibev); 3322 return NOTIFY_DONE; 3323 } 3324 3325 static const struct auxiliary_device_id mlx4_ib_id_table[] = { 3326 { .name = MLX4_ADEV_NAME ".ib" }, 3327 {}, 3328 }; 3329 3330 MODULE_DEVICE_TABLE(auxiliary, mlx4_ib_id_table); 3331 3332 static struct mlx4_adrv mlx4_ib_adrv = { 3333 .adrv = { 3334 .name = "ib", 3335 .probe = mlx4_ib_probe, 3336 .remove = mlx4_ib_remove, 3337 .id_table = mlx4_ib_id_table, 3338 }, 3339 .protocol = MLX4_PROT_IB_IPV6, 3340 .flags = MLX4_INTFF_BONDING 3341 }; 3342 3343 static int __init mlx4_ib_init(void) 3344 { 3345 int err; 3346 3347 wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM); 3348 if (!wq) 3349 return -ENOMEM; 3350 3351 err = mlx4_ib_qp_event_init(); 3352 if (err) 3353 goto clean_qp_event; 3354 3355 err = mlx4_ib_cm_init(); 3356 if (err) 3357 goto clean_wq; 3358 3359 err = mlx4_ib_mcg_init(); 3360 if (err) 3361 goto clean_cm; 3362 3363 err = mlx4_register_auxiliary_driver(&mlx4_ib_adrv); 3364 if (err) 3365 goto clean_mcg; 3366 3367 return 0; 3368 3369 clean_mcg: 3370 mlx4_ib_mcg_destroy(); 3371 3372 clean_cm: 3373 mlx4_ib_cm_destroy(); 3374 3375 clean_wq: 3376 mlx4_ib_qp_event_cleanup(); 3377 3378 clean_qp_event: 3379 destroy_workqueue(wq); 3380 return err; 3381 } 3382 3383 static void __exit mlx4_ib_cleanup(void) 3384 { 3385 mlx4_unregister_auxiliary_driver(&mlx4_ib_adrv); 3386 mlx4_ib_mcg_destroy(); 3387 mlx4_ib_cm_destroy(); 3388 mlx4_ib_qp_event_cleanup(); 3389 destroy_workqueue(wq); 3390 } 3391 3392 module_init(mlx4_ib_init); 3393 module_exit(mlx4_ib_cleanup); 3394