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 #define LINUXKPI_PARAM_PREFIX mlx4_ 35 36 #include <linux/module.h> 37 #include <linux/slab.h> 38 #include <linux/errno.h> 39 #include <linux/etherdevice.h> 40 #include <linux/netdevice.h> 41 #include <linux/if_vlan.h> 42 #include <linux/fs.h> 43 #include <linux/rcupdate.h> 44 #include <linux/notifier.h> 45 #include <linux/delay.h> 46 47 #include <net/ipv6.h> 48 49 #include <rdma/ib_smi.h> 50 #include <rdma/ib_user_verbs.h> 51 #include <rdma/ib_addr.h> 52 #include <rdma/ib_cache.h> 53 54 #include <dev/mlx4/driver.h> 55 #include <dev/mlx4/cmd.h> 56 #include <dev/mlx4/qp.h> 57 #include <linux/sched.h> 58 #include <linux/page.h> 59 #include <linux/printk.h> 60 #include "mlx4_ib.h" 61 #include <rdma/mlx4-abi.h> 62 #include "wc.h" 63 64 #define DRV_NAME MLX4_IB_DRV_NAME 65 #ifndef DRV_VERSION 66 #define DRV_VERSION "3.6.0" 67 #endif 68 #define DRV_RELDATE "December 2020" 69 70 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF 71 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF 72 #define MLX4_IB_CARD_REV_A0 0xA0 73 74 MODULE_AUTHOR("Roland Dreier"); 75 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 76 MODULE_LICENSE("Dual BSD/GPL"); 77 78 int mlx4_ib_sm_guid_assign = 0; 79 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 80 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)"); 81 82 static const char mlx4_ib_version[] = 83 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 84 DRV_VERSION " (" DRV_RELDATE ")\n"; 85 86 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 87 88 static struct workqueue_struct *wq; 89 90 static void init_query_mad(struct ib_smp *mad) 91 { 92 mad->base_version = 1; 93 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 94 mad->class_version = 1; 95 mad->method = IB_MGMT_METHOD_GET; 96 } 97 98 static int check_flow_steering_support(struct mlx4_dev *dev) 99 { 100 int eth_num_ports = 0; 101 int ib_num_ports = 0; 102 103 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; 104 105 if (dmfs) { 106 int i; 107 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 108 eth_num_ports++; 109 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 110 ib_num_ports++; 111 dmfs &= (!ib_num_ports || 112 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && 113 (!eth_num_ports || 114 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); 115 if (ib_num_ports && mlx4_is_mfunc(dev)) { 116 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); 117 dmfs = 0; 118 } 119 } 120 return dmfs; 121 } 122 123 static int num_ib_ports(struct mlx4_dev *dev) 124 { 125 int ib_ports = 0; 126 int i; 127 128 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 129 ib_ports++; 130 131 return ib_ports; 132 } 133 134 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num) 135 { 136 struct mlx4_ib_dev *ibdev = to_mdev(device); 137 struct net_device *dev; 138 139 rcu_read_lock(); 140 dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num); 141 142 #if 0 143 if (dev) { 144 if (mlx4_is_bonded(ibdev->dev)) { 145 struct net_device *upper = NULL; 146 147 upper = netdev_master_upper_dev_get_rcu(dev); 148 if (upper) { 149 struct net_device *active; 150 151 active = bond_option_active_slave_get_rcu(netdev_priv(upper)); 152 if (active) 153 dev = active; 154 } 155 } 156 } 157 #endif 158 if (dev) 159 if_ref(dev); 160 161 rcu_read_unlock(); 162 return dev; 163 } 164 165 static int mlx4_ib_update_gids_v1(struct gid_entry *gids, 166 struct mlx4_ib_dev *ibdev, 167 u8 port_num) 168 { 169 struct mlx4_cmd_mailbox *mailbox; 170 int err; 171 struct mlx4_dev *dev = ibdev->dev; 172 int i; 173 union ib_gid *gid_tbl; 174 175 mailbox = mlx4_alloc_cmd_mailbox(dev); 176 if (IS_ERR(mailbox)) 177 return -ENOMEM; 178 179 gid_tbl = mailbox->buf; 180 181 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 182 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid)); 183 184 err = mlx4_cmd(dev, mailbox->dma, 185 MLX4_SET_PORT_GID_TABLE << 8 | port_num, 186 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 187 MLX4_CMD_WRAPPED); 188 if (mlx4_is_bonded(dev)) 189 err += mlx4_cmd(dev, mailbox->dma, 190 MLX4_SET_PORT_GID_TABLE << 8 | 2, 191 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 192 MLX4_CMD_WRAPPED); 193 194 mlx4_free_cmd_mailbox(dev, mailbox); 195 return err; 196 } 197 198 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids, 199 struct mlx4_ib_dev *ibdev, 200 u8 port_num) 201 { 202 struct mlx4_cmd_mailbox *mailbox; 203 int err; 204 struct mlx4_dev *dev = ibdev->dev; 205 int i; 206 struct { 207 union ib_gid gid; 208 __be32 rsrvd1[2]; 209 __be16 rsrvd2; 210 u8 type; 211 u8 version; 212 __be32 rsrvd3; 213 } *gid_tbl; 214 215 mailbox = mlx4_alloc_cmd_mailbox(dev); 216 if (IS_ERR(mailbox)) 217 return -ENOMEM; 218 219 gid_tbl = mailbox->buf; 220 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 221 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid)); 222 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { 223 gid_tbl[i].version = 2; 224 if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid)) 225 gid_tbl[i].type = 1; 226 else 227 memset(&gid_tbl[i].gid, 0, 12); 228 } 229 } 230 231 err = mlx4_cmd(dev, mailbox->dma, 232 MLX4_SET_PORT_ROCE_ADDR << 8 | port_num, 233 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 234 MLX4_CMD_WRAPPED); 235 if (mlx4_is_bonded(dev)) 236 err += mlx4_cmd(dev, mailbox->dma, 237 MLX4_SET_PORT_ROCE_ADDR << 8 | 2, 238 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 239 MLX4_CMD_WRAPPED); 240 241 mlx4_free_cmd_mailbox(dev, mailbox); 242 return err; 243 } 244 245 static int mlx4_ib_update_gids(struct gid_entry *gids, 246 struct mlx4_ib_dev *ibdev, 247 u8 port_num) 248 { 249 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 250 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num); 251 252 return mlx4_ib_update_gids_v1(gids, ibdev, port_num); 253 } 254 255 static int mlx4_ib_add_gid(struct ib_device *device, 256 u8 port_num, 257 unsigned int index, 258 const union ib_gid *gid, 259 const struct ib_gid_attr *attr, 260 void **context) 261 { 262 struct mlx4_ib_dev *ibdev = to_mdev(device); 263 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 264 struct mlx4_port_gid_table *port_gid_table; 265 int free = -1, found = -1; 266 int ret = 0; 267 int hw_update = 0; 268 int i; 269 struct gid_entry *gids = NULL; 270 271 if (!rdma_cap_roce_gid_table(device, port_num)) 272 return -EINVAL; 273 274 if (port_num > MLX4_MAX_PORTS) 275 return -EINVAL; 276 277 if (!context) 278 return -EINVAL; 279 280 port_gid_table = &iboe->gids[port_num - 1]; 281 spin_lock_bh(&iboe->lock); 282 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 283 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) && 284 (port_gid_table->gids[i].gid_type == attr->gid_type)) { 285 found = i; 286 break; 287 } 288 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid))) 289 free = i; /* HW has space */ 290 } 291 292 if (found < 0) { 293 if (free < 0) { 294 ret = -ENOSPC; 295 } else { 296 port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC); 297 if (!port_gid_table->gids[free].ctx) { 298 ret = -ENOMEM; 299 } else { 300 *context = port_gid_table->gids[free].ctx; 301 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid)); 302 port_gid_table->gids[free].gid_type = attr->gid_type; 303 port_gid_table->gids[free].ctx->real_index = free; 304 port_gid_table->gids[free].ctx->refcount = 1; 305 hw_update = 1; 306 } 307 } 308 } else { 309 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx; 310 *context = ctx; 311 ctx->refcount++; 312 } 313 if (!ret && hw_update) { 314 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC); 315 if (!gids) { 316 ret = -ENOMEM; 317 } else { 318 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 319 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid)); 320 gids[i].gid_type = port_gid_table->gids[i].gid_type; 321 } 322 } 323 } 324 spin_unlock_bh(&iboe->lock); 325 326 if (!ret && hw_update) { 327 ret = mlx4_ib_update_gids(gids, ibdev, port_num); 328 kfree(gids); 329 } 330 331 return ret; 332 } 333 334 static int mlx4_ib_del_gid(struct ib_device *device, 335 u8 port_num, 336 unsigned int index, 337 void **context) 338 { 339 struct gid_cache_context *ctx = *context; 340 struct mlx4_ib_dev *ibdev = to_mdev(device); 341 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 342 struct mlx4_port_gid_table *port_gid_table; 343 int ret = 0; 344 int hw_update = 0; 345 struct gid_entry *gids = NULL; 346 347 if (!rdma_cap_roce_gid_table(device, port_num)) 348 return -EINVAL; 349 350 if (port_num > MLX4_MAX_PORTS) 351 return -EINVAL; 352 353 port_gid_table = &iboe->gids[port_num - 1]; 354 spin_lock_bh(&iboe->lock); 355 if (ctx) { 356 ctx->refcount--; 357 if (!ctx->refcount) { 358 unsigned int real_index = ctx->real_index; 359 360 memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid)); 361 kfree(port_gid_table->gids[real_index].ctx); 362 port_gid_table->gids[real_index].ctx = NULL; 363 hw_update = 1; 364 } 365 } 366 if (!ret && hw_update) { 367 int i; 368 369 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC); 370 if (!gids) { 371 ret = -ENOMEM; 372 } else { 373 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 374 memcpy(&gids[i].gid, 375 &port_gid_table->gids[i].gid, 376 sizeof(union ib_gid)); 377 gids[i].gid_type = 378 port_gid_table->gids[i].gid_type; 379 } 380 } 381 } 382 spin_unlock_bh(&iboe->lock); 383 384 if (!ret && hw_update) { 385 ret = mlx4_ib_update_gids(gids, ibdev, port_num); 386 kfree(gids); 387 } 388 return ret; 389 } 390 391 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev, 392 u8 port_num, int index) 393 { 394 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 395 struct gid_cache_context *ctx = NULL; 396 union ib_gid gid; 397 struct mlx4_port_gid_table *port_gid_table; 398 int real_index = -EINVAL; 399 int i; 400 int ret; 401 unsigned long flags; 402 struct ib_gid_attr attr; 403 404 if (port_num > MLX4_MAX_PORTS) 405 return -EINVAL; 406 407 if (mlx4_is_bonded(ibdev->dev)) 408 port_num = 1; 409 410 if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num)) 411 return index; 412 413 ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr); 414 if (ret) 415 return ret; 416 417 if (attr.ndev) 418 if_rele(attr.ndev); 419 420 if (!memcmp(&gid, &zgid, sizeof(gid))) 421 return -EINVAL; 422 423 spin_lock_irqsave(&iboe->lock, flags); 424 port_gid_table = &iboe->gids[port_num - 1]; 425 426 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 427 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) && 428 attr.gid_type == port_gid_table->gids[i].gid_type) { 429 ctx = port_gid_table->gids[i].ctx; 430 break; 431 } 432 if (ctx) 433 real_index = ctx->real_index; 434 spin_unlock_irqrestore(&iboe->lock, flags); 435 return real_index; 436 } 437 438 static int mlx4_ib_query_device(struct ib_device *ibdev, 439 struct ib_device_attr *props, 440 struct ib_udata *uhw) 441 { 442 struct mlx4_ib_dev *dev = to_mdev(ibdev); 443 struct ib_smp *in_mad = NULL; 444 struct ib_smp *out_mad = NULL; 445 int err = -ENOMEM; 446 int have_ib_ports; 447 struct mlx4_uverbs_ex_query_device cmd; 448 struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0}; 449 struct mlx4_clock_params clock_params; 450 451 if (uhw->inlen) { 452 if (uhw->inlen < sizeof(cmd)) 453 return -EINVAL; 454 455 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd)); 456 if (err) 457 return err; 458 459 if (cmd.comp_mask) 460 return -EINVAL; 461 462 if (cmd.reserved) 463 return -EINVAL; 464 } 465 466 resp.response_length = offsetof(typeof(resp), response_length) + 467 sizeof(resp.response_length); 468 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 469 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 470 if (!in_mad || !out_mad) 471 goto out; 472 473 init_query_mad(in_mad); 474 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 475 476 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 477 1, NULL, NULL, in_mad, out_mad); 478 if (err) 479 goto out; 480 481 memset(props, 0, sizeof *props); 482 483 have_ib_ports = num_ib_ports(dev->dev); 484 485 props->fw_ver = dev->dev->caps.fw_ver; 486 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 487 IB_DEVICE_PORT_ACTIVE_EVENT | 488 IB_DEVICE_SYS_IMAGE_GUID | 489 IB_DEVICE_RC_RNR_NAK_GEN | 490 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 491 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 492 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 493 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 494 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 495 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports) 496 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 497 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 498 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 499 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 500 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 501 if (dev->dev->caps.max_gso_sz && 502 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) && 503 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)) 504 props->device_cap_flags |= IB_DEVICE_UD_TSO; 505 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 506 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 507 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 508 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 509 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 510 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 511 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 512 props->device_cap_flags |= IB_DEVICE_XRC; 513 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) 514 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; 515 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 516 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) 517 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 518 else 519 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; 520 } 521 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 522 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 523 524 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; 525 526 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 527 0xffffff; 528 props->vendor_part_id = dev->dev->persist->pdev->device; 529 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 530 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 531 532 props->max_mr_size = ~0ull; 533 props->page_size_cap = dev->dev->caps.page_size_cap; 534 props->max_qp = dev->dev->quotas.qp; 535 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 536 props->max_sge = min(dev->dev->caps.max_sq_sg, 537 dev->dev->caps.max_rq_sg); 538 props->max_sge_rd = MLX4_MAX_SGE_RD; 539 props->max_cq = dev->dev->quotas.cq; 540 props->max_cqe = dev->dev->caps.max_cqes; 541 props->max_mr = dev->dev->quotas.mpt; 542 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 543 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 544 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 545 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 546 props->max_srq = dev->dev->quotas.srq; 547 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 548 props->max_srq_sge = dev->dev->caps.max_srq_sge; 549 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 550 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 551 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 552 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 553 props->masked_atomic_cap = props->atomic_cap; 554 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 555 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 556 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 557 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 558 props->max_mcast_grp; 559 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 560 props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL; 561 props->timestamp_mask = 0xFFFFFFFFFFFFULL; 562 563 if (!mlx4_is_slave(dev->dev)) 564 err = mlx4_get_internal_clock_params(dev->dev, &clock_params); 565 566 if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) { 567 resp.response_length += sizeof(resp.hca_core_clock_offset); 568 if (!err && !mlx4_is_slave(dev->dev)) { 569 resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP; 570 resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE; 571 } 572 } 573 574 if (uhw->outlen) { 575 err = ib_copy_to_udata(uhw, &resp, resp.response_length); 576 if (err) 577 goto out; 578 } 579 out: 580 kfree(in_mad); 581 kfree(out_mad); 582 583 return err; 584 } 585 586 static enum rdma_link_layer 587 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 588 { 589 struct mlx4_dev *dev = to_mdev(device)->dev; 590 591 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 592 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 593 } 594 595 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 596 struct ib_port_attr *props, int netw_view) 597 { 598 struct ib_smp *in_mad = NULL; 599 struct ib_smp *out_mad = NULL; 600 int ext_active_speed; 601 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 602 int err = -ENOMEM; 603 604 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 605 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 606 if (!in_mad || !out_mad) 607 goto out; 608 609 init_query_mad(in_mad); 610 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 611 in_mad->attr_mod = cpu_to_be32(port); 612 613 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 614 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 615 616 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 617 in_mad, out_mad); 618 if (err) 619 goto out; 620 621 622 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 623 props->lmc = out_mad->data[34] & 0x7; 624 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 625 props->sm_sl = out_mad->data[36] & 0xf; 626 props->state = out_mad->data[32] & 0xf; 627 props->phys_state = out_mad->data[33] >> 4; 628 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 629 if (netw_view) 630 props->gid_tbl_len = out_mad->data[50]; 631 else 632 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 633 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 634 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 635 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 636 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 637 props->active_width = out_mad->data[31] & 0xf; 638 props->active_speed = out_mad->data[35] >> 4; 639 props->max_mtu = out_mad->data[41] & 0xf; 640 props->active_mtu = out_mad->data[36] >> 4; 641 props->subnet_timeout = out_mad->data[51] & 0x1f; 642 props->max_vl_num = out_mad->data[37] >> 4; 643 props->init_type_reply = out_mad->data[41] >> 4; 644 645 /* Check if extended speeds (EDR/FDR/...) are supported */ 646 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 647 ext_active_speed = out_mad->data[62] >> 4; 648 649 switch (ext_active_speed) { 650 case 1: 651 props->active_speed = IB_SPEED_FDR; 652 break; 653 case 2: 654 props->active_speed = IB_SPEED_EDR; 655 break; 656 } 657 } 658 659 /* If reported active speed is QDR, check if is FDR-10 */ 660 if (props->active_speed == IB_SPEED_QDR) { 661 init_query_mad(in_mad); 662 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 663 in_mad->attr_mod = cpu_to_be32(port); 664 665 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 666 NULL, NULL, in_mad, out_mad); 667 if (err) 668 goto out; 669 670 /* Checking LinkSpeedActive for FDR-10 */ 671 if (out_mad->data[15] & 0x1) 672 props->active_speed = IB_SPEED_FDR10; 673 } 674 675 /* Avoid wrong speed value returned by FW if the IB link is down. */ 676 if (props->state == IB_PORT_DOWN) 677 props->active_speed = IB_SPEED_SDR; 678 679 out: 680 kfree(in_mad); 681 kfree(out_mad); 682 return err; 683 } 684 685 static u8 state_to_phys_state(enum ib_port_state state) 686 { 687 return state == IB_PORT_ACTIVE ? 5 : 3; 688 } 689 690 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 691 struct ib_port_attr *props, int netw_view) 692 { 693 694 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 695 struct mlx4_ib_iboe *iboe = &mdev->iboe; 696 struct net_device *ndev; 697 enum ib_mtu tmp; 698 struct mlx4_cmd_mailbox *mailbox; 699 int err = 0; 700 int is_bonded = mlx4_is_bonded(mdev->dev); 701 702 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 703 if (IS_ERR(mailbox)) 704 return PTR_ERR(mailbox); 705 706 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 707 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 708 MLX4_CMD_WRAPPED); 709 if (err) 710 goto out; 711 712 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? 713 IB_WIDTH_4X : IB_WIDTH_1X; 714 props->active_speed = IB_SPEED_QDR; 715 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS; 716 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 717 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 718 props->pkey_tbl_len = 1; 719 props->max_mtu = IB_MTU_4096; 720 props->max_vl_num = 2; 721 props->state = IB_PORT_DOWN; 722 props->phys_state = state_to_phys_state(props->state); 723 props->active_mtu = IB_MTU_256; 724 spin_lock_bh(&iboe->lock); 725 ndev = iboe->netdevs[port - 1]; 726 if (ndev && is_bonded) { 727 #if 0 728 rcu_read_lock(); /* required to get upper dev */ 729 ndev = netdev_master_upper_dev_get_rcu(ndev); 730 rcu_read_unlock(); 731 #endif 732 } 733 if (!ndev) 734 goto out_unlock; 735 736 tmp = iboe_get_mtu(ndev->if_mtu); 737 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 738 739 props->state = ((ndev->if_drv_flags & IFF_DRV_RUNNING) != 0 && 740 ndev->if_link_state == LINK_STATE_UP) ? 741 IB_PORT_ACTIVE : IB_PORT_DOWN; 742 props->phys_state = state_to_phys_state(props->state); 743 out_unlock: 744 spin_unlock_bh(&iboe->lock); 745 out: 746 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 747 return err; 748 } 749 750 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 751 struct ib_port_attr *props, int netw_view) 752 { 753 int err; 754 755 memset(props, 0, sizeof *props); 756 757 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 758 ib_link_query_port(ibdev, port, props, netw_view) : 759 eth_link_query_port(ibdev, port, props, netw_view); 760 761 return err; 762 } 763 764 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 765 struct ib_port_attr *props) 766 { 767 /* returns host view */ 768 return __mlx4_ib_query_port(ibdev, port, props, 0); 769 } 770 771 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 772 union ib_gid *gid, int netw_view) 773 { 774 struct ib_smp *in_mad = NULL; 775 struct ib_smp *out_mad = NULL; 776 int err = -ENOMEM; 777 struct mlx4_ib_dev *dev = to_mdev(ibdev); 778 int clear = 0; 779 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 780 781 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 782 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 783 if (!in_mad || !out_mad) 784 goto out; 785 786 init_query_mad(in_mad); 787 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 788 in_mad->attr_mod = cpu_to_be32(port); 789 790 if (mlx4_is_mfunc(dev->dev) && netw_view) 791 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 792 793 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 794 if (err) 795 goto out; 796 797 memcpy(gid->raw, out_mad->data + 8, 8); 798 799 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 800 if (index) { 801 /* For any index > 0, return the null guid */ 802 err = 0; 803 clear = 1; 804 goto out; 805 } 806 } 807 808 init_query_mad(in_mad); 809 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 810 in_mad->attr_mod = cpu_to_be32(index / 8); 811 812 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 813 NULL, NULL, in_mad, out_mad); 814 if (err) 815 goto out; 816 817 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 818 819 out: 820 if (clear) 821 memset(gid->raw + 8, 0, 8); 822 kfree(in_mad); 823 kfree(out_mad); 824 return err; 825 } 826 827 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 828 union ib_gid *gid) 829 { 830 int ret; 831 832 if (rdma_protocol_ib(ibdev, port)) 833 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 834 835 if (!rdma_protocol_roce(ibdev, port)) 836 return -ENODEV; 837 838 if (!rdma_cap_roce_gid_table(ibdev, port)) 839 return -ENODEV; 840 841 ret = ib_get_cached_gid(ibdev, port, index, gid, NULL); 842 if (ret == -EAGAIN) { 843 memcpy(gid, &zgid, sizeof(*gid)); 844 return 0; 845 } 846 847 return ret; 848 } 849 850 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl) 851 { 852 union sl2vl_tbl_to_u64 sl2vl64; 853 struct ib_smp *in_mad = NULL; 854 struct ib_smp *out_mad = NULL; 855 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 856 int err = -ENOMEM; 857 int jj; 858 859 if (mlx4_is_slave(to_mdev(ibdev)->dev)) { 860 *sl2vl_tbl = 0; 861 return 0; 862 } 863 864 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 865 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 866 if (!in_mad || !out_mad) 867 goto out; 868 869 init_query_mad(in_mad); 870 in_mad->attr_id = IB_SMP_ATTR_SL_TO_VL_TABLE; 871 in_mad->attr_mod = 0; 872 873 if (mlx4_is_mfunc(to_mdev(ibdev)->dev)) 874 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 875 876 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 877 in_mad, out_mad); 878 if (err) 879 goto out; 880 881 for (jj = 0; jj < 8; jj++) 882 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj]; 883 *sl2vl_tbl = sl2vl64.sl64; 884 885 out: 886 kfree(in_mad); 887 kfree(out_mad); 888 return err; 889 } 890 891 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev) 892 { 893 u64 sl2vl; 894 int i; 895 int err; 896 897 for (i = 1; i <= mdev->dev->caps.num_ports; i++) { 898 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH) 899 continue; 900 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl); 901 if (err) { 902 pr_err("Unable to get default sl to vl mapping for port %d. Using all zeroes (%d)\n", 903 i, err); 904 sl2vl = 0; 905 } 906 atomic64_set(&mdev->sl2vl[i - 1], sl2vl); 907 } 908 } 909 910 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 911 u16 *pkey, int netw_view) 912 { 913 struct ib_smp *in_mad = NULL; 914 struct ib_smp *out_mad = NULL; 915 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 916 int err = -ENOMEM; 917 918 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 919 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 920 if (!in_mad || !out_mad) 921 goto out; 922 923 init_query_mad(in_mad); 924 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 925 in_mad->attr_mod = cpu_to_be32(index / 32); 926 927 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 928 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 929 930 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 931 in_mad, out_mad); 932 if (err) 933 goto out; 934 935 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 936 937 out: 938 kfree(in_mad); 939 kfree(out_mad); 940 return err; 941 } 942 943 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 944 { 945 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 946 } 947 948 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 949 struct ib_device_modify *props) 950 { 951 struct mlx4_cmd_mailbox *mailbox; 952 unsigned long flags; 953 954 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 955 return -EOPNOTSUPP; 956 957 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 958 return 0; 959 960 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 961 return -EOPNOTSUPP; 962 963 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 964 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 965 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 966 967 /* 968 * If possible, pass node desc to FW, so it can generate 969 * a 144 trap. If cmd fails, just ignore. 970 */ 971 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 972 if (IS_ERR(mailbox)) 973 return 0; 974 975 memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 976 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 977 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 978 979 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 980 981 return 0; 982 } 983 984 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 985 u32 cap_mask) 986 { 987 struct mlx4_cmd_mailbox *mailbox; 988 int err; 989 990 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 991 if (IS_ERR(mailbox)) 992 return PTR_ERR(mailbox); 993 994 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 995 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 996 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 997 } else { 998 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 999 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 1000 } 1001 1002 err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE, 1003 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1004 MLX4_CMD_WRAPPED); 1005 1006 mlx4_free_cmd_mailbox(dev->dev, mailbox); 1007 return err; 1008 } 1009 1010 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 1011 struct ib_port_modify *props) 1012 { 1013 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 1014 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 1015 struct ib_port_attr attr; 1016 u32 cap_mask; 1017 int err; 1018 1019 /* return OK if this is RoCE. CM calls ib_modify_port() regardless 1020 * of whether port link layer is ETH or IB. For ETH ports, qkey 1021 * violations and port capabilities are not meaningful. 1022 */ 1023 if (is_eth) 1024 return 0; 1025 1026 mutex_lock(&mdev->cap_mask_mutex); 1027 1028 err = mlx4_ib_query_port(ibdev, port, &attr); 1029 if (err) 1030 goto out; 1031 1032 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 1033 ~props->clr_port_cap_mask; 1034 1035 err = mlx4_ib_SET_PORT(mdev, port, 1036 !!(mask & IB_PORT_RESET_QKEY_CNTR), 1037 cap_mask); 1038 1039 out: 1040 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 1041 return err; 1042 } 1043 1044 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 1045 struct ib_udata *udata) 1046 { 1047 struct mlx4_ib_dev *dev = to_mdev(ibdev); 1048 struct mlx4_ib_ucontext *context; 1049 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 1050 struct mlx4_ib_alloc_ucontext_resp resp; 1051 int err; 1052 1053 if (!dev->ib_active) 1054 return ERR_PTR(-EAGAIN); 1055 1056 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 1057 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 1058 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 1059 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1060 } else { 1061 resp.dev_caps = dev->dev->caps.userspace_caps; 1062 resp.qp_tab_size = dev->dev->caps.num_qps; 1063 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 1064 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1065 resp.cqe_size = dev->dev->caps.cqe_size; 1066 } 1067 1068 context = kzalloc(sizeof(*context), GFP_KERNEL); 1069 if (!context) 1070 return ERR_PTR(-ENOMEM); 1071 1072 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 1073 if (err) { 1074 kfree(context); 1075 return ERR_PTR(err); 1076 } 1077 1078 INIT_LIST_HEAD(&context->db_page_list); 1079 mutex_init(&context->db_page_mutex); 1080 1081 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 1082 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 1083 else 1084 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1085 1086 if (err) { 1087 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 1088 kfree(context); 1089 return ERR_PTR(-EFAULT); 1090 } 1091 1092 return &context->ibucontext; 1093 } 1094 1095 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 1096 { 1097 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 1098 1099 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 1100 kfree(context); 1101 1102 return 0; 1103 } 1104 1105 static void mlx4_ib_vma_open(struct vm_area_struct *area) 1106 { 1107 /* vma_open is called when a new VMA is created on top of our VMA. 1108 * This is done through either mremap flow or split_vma (usually due 1109 * to mlock, madvise, munmap, etc.). We do not support a clone of the 1110 * vma, as this VMA is strongly hardware related. Therefore we set the 1111 * vm_ops of the newly created/cloned VMA to NULL, to prevent it from 1112 * calling us again and trying to do incorrect actions. We assume that 1113 * the original vma size is exactly a single page that there will be no 1114 * "splitting" operations on. 1115 */ 1116 area->vm_ops = NULL; 1117 } 1118 1119 static void mlx4_ib_vma_close(struct vm_area_struct *area) 1120 { 1121 struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data; 1122 1123 /* It's guaranteed that all VMAs opened on a FD are closed before the 1124 * file itself is closed, therefore no sync is needed with the regular 1125 * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync 1126 * with accessing the vma as part of mlx4_ib_disassociate_ucontext. 1127 * The close operation is usually called under mm->mmap_sem except when 1128 * process is exiting. The exiting case is handled explicitly as part 1129 * of mlx4_ib_disassociate_ucontext. 1130 */ 1131 mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *) 1132 area->vm_private_data; 1133 1134 /* set the vma context pointer to null in the mlx4_ib driver's private 1135 * data to protect against a race condition in mlx4_ib_dissassociate_ucontext(). 1136 */ 1137 mlx4_ib_vma_priv_data->vma = NULL; 1138 } 1139 1140 static const struct vm_operations_struct mlx4_ib_vm_ops = { 1141 .open = mlx4_ib_vma_open, 1142 .close = mlx4_ib_vma_close 1143 }; 1144 1145 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma, 1146 struct mlx4_ib_vma_private_data *vma_private_data) 1147 { 1148 vma_private_data->vma = vma; 1149 vma->vm_private_data = vma_private_data; 1150 vma->vm_ops = &mlx4_ib_vm_ops; 1151 } 1152 1153 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 1154 { 1155 struct mlx4_ib_dev *dev = to_mdev(context->device); 1156 struct mlx4_ib_ucontext *mucontext = to_mucontext(context); 1157 1158 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 1159 return -EINVAL; 1160 1161 if (vma->vm_pgoff == 0) { 1162 /* We prevent double mmaping on same context */ 1163 if (mucontext->hw_bar_info[HW_BAR_DB].vma) 1164 return -EINVAL; 1165 1166 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 1167 1168 if (io_remap_pfn_range(vma, vma->vm_start, 1169 to_mucontext(context)->uar.pfn, 1170 PAGE_SIZE, vma->vm_page_prot)) 1171 return -EAGAIN; 1172 1173 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]); 1174 1175 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 1176 /* We prevent double mmaping on same context */ 1177 if (mucontext->hw_bar_info[HW_BAR_BF].vma) 1178 return -EINVAL; 1179 1180 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 1181 1182 if (io_remap_pfn_range(vma, vma->vm_start, 1183 to_mucontext(context)->uar.pfn + 1184 dev->dev->caps.num_uars, 1185 PAGE_SIZE, vma->vm_page_prot)) 1186 return -EAGAIN; 1187 1188 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]); 1189 1190 } else if (vma->vm_pgoff == 3) { 1191 struct mlx4_clock_params params; 1192 int ret; 1193 1194 /* We prevent double mmaping on same context */ 1195 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma) 1196 return -EINVAL; 1197 1198 ret = mlx4_get_internal_clock_params(dev->dev, ¶ms); 1199 1200 if (ret) 1201 return ret; 1202 1203 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 1204 if (io_remap_pfn_range(vma, vma->vm_start, 1205 (pci_resource_start(dev->dev->persist->pdev, 1206 params.bar) + 1207 params.offset) 1208 >> PAGE_SHIFT, 1209 PAGE_SIZE, vma->vm_page_prot)) 1210 return -EAGAIN; 1211 1212 mlx4_ib_set_vma_data(vma, 1213 &mucontext->hw_bar_info[HW_BAR_CLOCK]); 1214 } else { 1215 return -EINVAL; 1216 } 1217 1218 return 0; 1219 } 1220 1221 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 1222 struct ib_ucontext *context, 1223 struct ib_udata *udata) 1224 { 1225 struct mlx4_ib_pd *pd; 1226 int err; 1227 1228 pd = kmalloc(sizeof *pd, GFP_KERNEL); 1229 if (!pd) 1230 return ERR_PTR(-ENOMEM); 1231 1232 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 1233 if (err) { 1234 kfree(pd); 1235 return ERR_PTR(err); 1236 } 1237 1238 if (context) 1239 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 1240 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 1241 kfree(pd); 1242 return ERR_PTR(-EFAULT); 1243 } 1244 1245 return &pd->ibpd; 1246 } 1247 1248 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 1249 { 1250 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 1251 kfree(pd); 1252 1253 return 0; 1254 } 1255 1256 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 1257 struct ib_ucontext *context, 1258 struct ib_udata *udata) 1259 { 1260 struct mlx4_ib_xrcd *xrcd; 1261 struct ib_cq_init_attr cq_attr = {}; 1262 int err; 1263 1264 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 1265 return ERR_PTR(-ENOSYS); 1266 1267 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 1268 if (!xrcd) 1269 return ERR_PTR(-ENOMEM); 1270 1271 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 1272 if (err) 1273 goto err1; 1274 1275 xrcd->pd = ib_alloc_pd(ibdev, 0); 1276 if (IS_ERR(xrcd->pd)) { 1277 err = PTR_ERR(xrcd->pd); 1278 goto err2; 1279 } 1280 1281 cq_attr.cqe = 1; 1282 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr); 1283 if (IS_ERR(xrcd->cq)) { 1284 err = PTR_ERR(xrcd->cq); 1285 goto err3; 1286 } 1287 1288 return &xrcd->ibxrcd; 1289 1290 err3: 1291 ib_dealloc_pd(xrcd->pd); 1292 err2: 1293 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 1294 err1: 1295 kfree(xrcd); 1296 return ERR_PTR(err); 1297 } 1298 1299 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 1300 { 1301 ib_destroy_cq(to_mxrcd(xrcd)->cq); 1302 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 1303 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 1304 kfree(xrcd); 1305 1306 return 0; 1307 } 1308 1309 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 1310 { 1311 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1312 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1313 struct mlx4_ib_gid_entry *ge; 1314 1315 ge = kzalloc(sizeof *ge, GFP_KERNEL); 1316 if (!ge) 1317 return -ENOMEM; 1318 1319 ge->gid = *gid; 1320 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 1321 ge->port = mqp->port; 1322 ge->added = 1; 1323 } 1324 1325 mutex_lock(&mqp->mutex); 1326 list_add_tail(&ge->list, &mqp->gid_list); 1327 mutex_unlock(&mqp->mutex); 1328 1329 return 0; 1330 } 1331 1332 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev, 1333 struct mlx4_ib_counters *ctr_table) 1334 { 1335 struct counter_index *counter, *tmp_count; 1336 1337 mutex_lock(&ctr_table->mutex); 1338 list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list, 1339 list) { 1340 if (counter->allocated) 1341 mlx4_counter_free(ibdev->dev, counter->index); 1342 list_del(&counter->list); 1343 kfree(counter); 1344 } 1345 mutex_unlock(&ctr_table->mutex); 1346 } 1347 1348 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 1349 union ib_gid *gid) 1350 { 1351 struct net_device *ndev; 1352 int ret = 0; 1353 1354 if (!mqp->port) 1355 return 0; 1356 1357 spin_lock_bh(&mdev->iboe.lock); 1358 ndev = mdev->iboe.netdevs[mqp->port - 1]; 1359 if (ndev) 1360 if_ref(ndev); 1361 spin_unlock_bh(&mdev->iboe.lock); 1362 1363 if (ndev) { 1364 ret = 1; 1365 if_rele(ndev); 1366 } 1367 1368 return ret; 1369 } 1370 1371 struct mlx4_ib_steering { 1372 struct list_head list; 1373 struct mlx4_flow_reg_id reg_id; 1374 union ib_gid gid; 1375 }; 1376 1377 #define LAST_ETH_FIELD vlan_tag 1378 #define LAST_IB_FIELD sl 1379 #define LAST_IPV4_FIELD dst_ip 1380 #define LAST_TCP_UDP_FIELD src_port 1381 1382 /* Field is the last supported field */ 1383 #define FIELDS_NOT_SUPPORTED(filter, field)\ 1384 memchr_inv((void *)&filter.field +\ 1385 sizeof(filter.field), 0,\ 1386 sizeof(filter) -\ 1387 offsetof(typeof(filter), field) -\ 1388 sizeof(filter.field)) 1389 1390 static int parse_flow_attr(struct mlx4_dev *dev, 1391 u32 qp_num, 1392 union ib_flow_spec *ib_spec, 1393 struct _rule_hw *mlx4_spec) 1394 { 1395 enum mlx4_net_trans_rule_id type; 1396 1397 switch (ib_spec->type) { 1398 case IB_FLOW_SPEC_ETH: 1399 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) 1400 return -ENOTSUPP; 1401 1402 type = MLX4_NET_TRANS_RULE_ID_ETH; 1403 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 1404 ETH_ALEN); 1405 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 1406 ETH_ALEN); 1407 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 1408 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 1409 break; 1410 case IB_FLOW_SPEC_IB: 1411 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD)) 1412 return -ENOTSUPP; 1413 1414 type = MLX4_NET_TRANS_RULE_ID_IB; 1415 mlx4_spec->ib.l3_qpn = 1416 cpu_to_be32(qp_num); 1417 mlx4_spec->ib.qpn_mask = 1418 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 1419 break; 1420 1421 1422 case IB_FLOW_SPEC_IPV4: 1423 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) 1424 return -ENOTSUPP; 1425 1426 type = MLX4_NET_TRANS_RULE_ID_IPV4; 1427 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 1428 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 1429 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 1430 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 1431 break; 1432 1433 case IB_FLOW_SPEC_TCP: 1434 case IB_FLOW_SPEC_UDP: 1435 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) 1436 return -ENOTSUPP; 1437 1438 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 1439 MLX4_NET_TRANS_RULE_ID_TCP : 1440 MLX4_NET_TRANS_RULE_ID_UDP; 1441 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 1442 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 1443 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 1444 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 1445 break; 1446 1447 default: 1448 return -EINVAL; 1449 } 1450 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 1451 mlx4_hw_rule_sz(dev, type) < 0) 1452 return -EINVAL; 1453 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 1454 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 1455 return mlx4_hw_rule_sz(dev, type); 1456 } 1457 1458 struct default_rules { 1459 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1460 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1461 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1462 __u8 link_layer; 1463 }; 1464 static const struct default_rules default_table[] = { 1465 { 1466 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 1467 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 1468 .rules_create_list = {IB_FLOW_SPEC_IB}, 1469 .link_layer = IB_LINK_LAYER_INFINIBAND 1470 } 1471 }; 1472 1473 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 1474 struct ib_flow_attr *flow_attr) 1475 { 1476 int i, j, k; 1477 void *ib_flow; 1478 const struct default_rules *pdefault_rules = default_table; 1479 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 1480 1481 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 1482 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1483 memset(&field_types, 0, sizeof(field_types)); 1484 1485 if (link_layer != pdefault_rules->link_layer) 1486 continue; 1487 1488 ib_flow = flow_attr + 1; 1489 /* we assume the specs are sorted */ 1490 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 1491 j < flow_attr->num_of_specs; k++) { 1492 union ib_flow_spec *current_flow = 1493 (union ib_flow_spec *)ib_flow; 1494 1495 /* same layer but different type */ 1496 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 1497 (pdefault_rules->mandatory_fields[k] & 1498 IB_FLOW_SPEC_LAYER_MASK)) && 1499 (current_flow->type != 1500 pdefault_rules->mandatory_fields[k])) 1501 goto out; 1502 1503 /* same layer, try match next one */ 1504 if (current_flow->type == 1505 pdefault_rules->mandatory_fields[k]) { 1506 j++; 1507 ib_flow += 1508 ((union ib_flow_spec *)ib_flow)->size; 1509 } 1510 } 1511 1512 ib_flow = flow_attr + 1; 1513 for (j = 0; j < flow_attr->num_of_specs; 1514 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 1515 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 1516 /* same layer and same type */ 1517 if (((union ib_flow_spec *)ib_flow)->type == 1518 pdefault_rules->mandatory_not_fields[k]) 1519 goto out; 1520 1521 return i; 1522 } 1523 out: 1524 return -1; 1525 } 1526 1527 static int __mlx4_ib_create_default_rules( 1528 struct mlx4_ib_dev *mdev, 1529 struct ib_qp *qp, 1530 const struct default_rules *pdefault_rules, 1531 struct _rule_hw *mlx4_spec) { 1532 int size = 0; 1533 int i; 1534 1535 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 1536 int ret; 1537 union ib_flow_spec ib_spec; 1538 switch (pdefault_rules->rules_create_list[i]) { 1539 case 0: 1540 /* no rule */ 1541 continue; 1542 case IB_FLOW_SPEC_IB: 1543 ib_spec.type = IB_FLOW_SPEC_IB; 1544 ib_spec.size = sizeof(struct ib_flow_spec_ib); 1545 1546 break; 1547 default: 1548 /* invalid rule */ 1549 return -EINVAL; 1550 } 1551 /* We must put empty rule, qpn is being ignored */ 1552 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1553 mlx4_spec); 1554 if (ret < 0) { 1555 pr_info("invalid parsing\n"); 1556 return -EINVAL; 1557 } 1558 1559 mlx4_spec = (void *)mlx4_spec + ret; 1560 size += ret; 1561 } 1562 return size; 1563 } 1564 1565 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1566 int domain, 1567 enum mlx4_net_trans_promisc_mode flow_type, 1568 u64 *reg_id) 1569 { 1570 int ret, i; 1571 int size = 0; 1572 void *ib_flow; 1573 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1574 struct mlx4_cmd_mailbox *mailbox; 1575 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1576 int default_flow; 1577 1578 static const u16 __mlx4_domain[] = { 1579 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 1580 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 1581 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 1582 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 1583 }; 1584 1585 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1586 pr_err("Invalid priority value %d\n", flow_attr->priority); 1587 return -EINVAL; 1588 } 1589 1590 if (domain >= IB_FLOW_DOMAIN_NUM) { 1591 pr_err("Invalid domain value %d\n", domain); 1592 return -EINVAL; 1593 } 1594 1595 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1596 return -EINVAL; 1597 1598 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1599 if (IS_ERR(mailbox)) 1600 return PTR_ERR(mailbox); 1601 ctrl = mailbox->buf; 1602 1603 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 1604 flow_attr->priority); 1605 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1606 ctrl->port = flow_attr->port; 1607 ctrl->qpn = cpu_to_be32(qp->qp_num); 1608 1609 ib_flow = flow_attr + 1; 1610 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1611 /* Add default flows */ 1612 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1613 if (default_flow >= 0) { 1614 ret = __mlx4_ib_create_default_rules( 1615 mdev, qp, default_table + default_flow, 1616 mailbox->buf + size); 1617 if (ret < 0) { 1618 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1619 return -EINVAL; 1620 } 1621 size += ret; 1622 } 1623 for (i = 0; i < flow_attr->num_of_specs; i++) { 1624 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1625 mailbox->buf + size); 1626 if (ret < 0) { 1627 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1628 return -EINVAL; 1629 } 1630 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1631 size += ret; 1632 } 1633 1634 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1635 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1636 MLX4_CMD_WRAPPED); 1637 if (ret == -ENOMEM) 1638 pr_err("mcg table is full. Fail to register network rule.\n"); 1639 else if (ret == -ENXIO) 1640 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1641 else if (ret) 1642 pr_err("Invalid argument. Fail to register network rule.\n"); 1643 1644 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1645 return ret; 1646 } 1647 1648 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1649 { 1650 int err; 1651 err = mlx4_cmd(dev, reg_id, 0, 0, 1652 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1653 MLX4_CMD_WRAPPED); 1654 if (err) 1655 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1656 (long long)reg_id); 1657 return err; 1658 } 1659 1660 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1661 u64 *reg_id) 1662 { 1663 void *ib_flow; 1664 union ib_flow_spec *ib_spec; 1665 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1666 int err = 0; 1667 1668 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 1669 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 1670 return 0; /* do nothing */ 1671 1672 ib_flow = flow_attr + 1; 1673 ib_spec = (union ib_flow_spec *)ib_flow; 1674 1675 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1676 return 0; /* do nothing */ 1677 1678 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1679 flow_attr->port, qp->qp_num, 1680 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1681 reg_id); 1682 return err; 1683 } 1684 1685 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev, 1686 struct ib_flow_attr *flow_attr, 1687 enum mlx4_net_trans_promisc_mode *type) 1688 { 1689 int err = 0; 1690 1691 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) || 1692 (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) || 1693 (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) { 1694 return -EOPNOTSUPP; 1695 } 1696 1697 if (flow_attr->num_of_specs == 0) { 1698 type[0] = MLX4_FS_MC_SNIFFER; 1699 type[1] = MLX4_FS_UC_SNIFFER; 1700 } else { 1701 union ib_flow_spec *ib_spec; 1702 1703 ib_spec = (union ib_flow_spec *)(flow_attr + 1); 1704 if (ib_spec->type != IB_FLOW_SPEC_ETH) 1705 return -EINVAL; 1706 1707 /* if all is zero than MC and UC */ 1708 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) { 1709 type[0] = MLX4_FS_MC_SNIFFER; 1710 type[1] = MLX4_FS_UC_SNIFFER; 1711 } else { 1712 u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01, 1713 ib_spec->eth.mask.dst_mac[1], 1714 ib_spec->eth.mask.dst_mac[2], 1715 ib_spec->eth.mask.dst_mac[3], 1716 ib_spec->eth.mask.dst_mac[4], 1717 ib_spec->eth.mask.dst_mac[5]}; 1718 1719 /* Above xor was only on MC bit, non empty mask is valid 1720 * only if this bit is set and rest are zero. 1721 */ 1722 if (!is_zero_ether_addr(&mac[0])) 1723 return -EINVAL; 1724 1725 if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac)) 1726 type[0] = MLX4_FS_MC_SNIFFER; 1727 else 1728 type[0] = MLX4_FS_UC_SNIFFER; 1729 } 1730 } 1731 1732 return err; 1733 } 1734 1735 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1736 struct ib_flow_attr *flow_attr, 1737 int domain) 1738 { 1739 int err = 0, i = 0, j = 0; 1740 struct mlx4_ib_flow *mflow; 1741 enum mlx4_net_trans_promisc_mode type[2]; 1742 struct mlx4_dev *dev = (to_mdev(qp->device))->dev; 1743 int is_bonded = mlx4_is_bonded(dev); 1744 1745 if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt) 1746 return ERR_PTR(-EINVAL); 1747 1748 if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 1749 (flow_attr->type != IB_FLOW_ATTR_NORMAL)) 1750 return ERR_PTR(-EOPNOTSUPP); 1751 1752 memset(type, 0, sizeof(type)); 1753 1754 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1755 if (!mflow) { 1756 err = -ENOMEM; 1757 goto err_free; 1758 } 1759 1760 switch (flow_attr->type) { 1761 case IB_FLOW_ATTR_NORMAL: 1762 /* If dont trap flag (continue match) is set, under specific 1763 * condition traffic be replicated to given qp, 1764 * without stealing it 1765 */ 1766 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) { 1767 err = mlx4_ib_add_dont_trap_rule(dev, 1768 flow_attr, 1769 type); 1770 if (err) 1771 goto err_free; 1772 } else { 1773 type[0] = MLX4_FS_REGULAR; 1774 } 1775 break; 1776 1777 case IB_FLOW_ATTR_ALL_DEFAULT: 1778 type[0] = MLX4_FS_ALL_DEFAULT; 1779 break; 1780 1781 case IB_FLOW_ATTR_MC_DEFAULT: 1782 type[0] = MLX4_FS_MC_DEFAULT; 1783 break; 1784 1785 case IB_FLOW_ATTR_SNIFFER: 1786 type[0] = MLX4_FS_MIRROR_RX_PORT; 1787 type[1] = MLX4_FS_MIRROR_SX_PORT; 1788 break; 1789 1790 default: 1791 err = -EINVAL; 1792 goto err_free; 1793 } 1794 1795 while (i < ARRAY_SIZE(type) && type[i]) { 1796 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 1797 &mflow->reg_id[i].id); 1798 if (err) 1799 goto err_create_flow; 1800 if (is_bonded) { 1801 /* Application always sees one port so the mirror rule 1802 * must be on port #2 1803 */ 1804 flow_attr->port = 2; 1805 err = __mlx4_ib_create_flow(qp, flow_attr, 1806 domain, type[j], 1807 &mflow->reg_id[j].mirror); 1808 flow_attr->port = 1; 1809 if (err) 1810 goto err_create_flow; 1811 j++; 1812 } 1813 1814 i++; 1815 } 1816 1817 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1818 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1819 &mflow->reg_id[i].id); 1820 if (err) 1821 goto err_create_flow; 1822 1823 if (is_bonded) { 1824 flow_attr->port = 2; 1825 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1826 &mflow->reg_id[j].mirror); 1827 flow_attr->port = 1; 1828 if (err) 1829 goto err_create_flow; 1830 j++; 1831 } 1832 /* function to create mirror rule */ 1833 i++; 1834 } 1835 1836 return &mflow->ibflow; 1837 1838 err_create_flow: 1839 while (i) { 1840 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1841 mflow->reg_id[i].id); 1842 i--; 1843 } 1844 1845 while (j) { 1846 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1847 mflow->reg_id[j].mirror); 1848 j--; 1849 } 1850 err_free: 1851 kfree(mflow); 1852 return ERR_PTR(err); 1853 } 1854 1855 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1856 { 1857 int err, ret = 0; 1858 int i = 0; 1859 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1860 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1861 1862 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { 1863 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); 1864 if (err) 1865 ret = err; 1866 if (mflow->reg_id[i].mirror) { 1867 err = __mlx4_ib_destroy_flow(mdev->dev, 1868 mflow->reg_id[i].mirror); 1869 if (err) 1870 ret = err; 1871 } 1872 i++; 1873 } 1874 1875 kfree(mflow); 1876 return ret; 1877 } 1878 1879 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1880 { 1881 int err; 1882 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1883 struct mlx4_dev *dev = mdev->dev; 1884 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1885 struct mlx4_ib_steering *ib_steering = NULL; 1886 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1887 struct mlx4_flow_reg_id reg_id; 1888 1889 if (mdev->dev->caps.steering_mode == 1890 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1891 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1892 if (!ib_steering) 1893 return -ENOMEM; 1894 } 1895 1896 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1897 !!(mqp->flags & 1898 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1899 prot, ®_id.id); 1900 if (err) { 1901 pr_err("multicast attach op failed, err %d\n", err); 1902 goto err_malloc; 1903 } 1904 1905 reg_id.mirror = 0; 1906 if (mlx4_is_bonded(dev)) { 1907 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 1908 (mqp->port == 1) ? 2 : 1, 1909 !!(mqp->flags & 1910 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1911 prot, ®_id.mirror); 1912 if (err) 1913 goto err_add; 1914 } 1915 1916 err = add_gid_entry(ibqp, gid); 1917 if (err) 1918 goto err_add; 1919 1920 if (ib_steering) { 1921 memcpy(ib_steering->gid.raw, gid->raw, 16); 1922 ib_steering->reg_id = reg_id; 1923 mutex_lock(&mqp->mutex); 1924 list_add(&ib_steering->list, &mqp->steering_rules); 1925 mutex_unlock(&mqp->mutex); 1926 } 1927 return 0; 1928 1929 err_add: 1930 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1931 prot, reg_id.id); 1932 if (reg_id.mirror) 1933 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1934 prot, reg_id.mirror); 1935 err_malloc: 1936 kfree(ib_steering); 1937 1938 return err; 1939 } 1940 1941 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1942 { 1943 struct mlx4_ib_gid_entry *ge; 1944 struct mlx4_ib_gid_entry *tmp; 1945 struct mlx4_ib_gid_entry *ret = NULL; 1946 1947 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1948 if (!memcmp(raw, ge->gid.raw, 16)) { 1949 ret = ge; 1950 break; 1951 } 1952 } 1953 1954 return ret; 1955 } 1956 1957 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1958 { 1959 int err; 1960 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1961 struct mlx4_dev *dev = mdev->dev; 1962 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1963 struct net_device *ndev; 1964 struct mlx4_ib_gid_entry *ge; 1965 struct mlx4_flow_reg_id reg_id = {0, 0}; 1966 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1967 1968 if (mdev->dev->caps.steering_mode == 1969 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1970 struct mlx4_ib_steering *ib_steering; 1971 1972 mutex_lock(&mqp->mutex); 1973 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1974 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1975 list_del(&ib_steering->list); 1976 break; 1977 } 1978 } 1979 mutex_unlock(&mqp->mutex); 1980 if (&ib_steering->list == &mqp->steering_rules) { 1981 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1982 return -EINVAL; 1983 } 1984 reg_id = ib_steering->reg_id; 1985 kfree(ib_steering); 1986 } 1987 1988 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1989 prot, reg_id.id); 1990 if (err) 1991 return err; 1992 1993 if (mlx4_is_bonded(dev)) { 1994 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1995 prot, reg_id.mirror); 1996 if (err) 1997 return err; 1998 } 1999 2000 mutex_lock(&mqp->mutex); 2001 ge = find_gid_entry(mqp, gid->raw); 2002 if (ge) { 2003 spin_lock_bh(&mdev->iboe.lock); 2004 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 2005 if (ndev) 2006 if_ref(ndev); 2007 spin_unlock_bh(&mdev->iboe.lock); 2008 if (ndev) 2009 if_rele(ndev); 2010 list_del(&ge->list); 2011 kfree(ge); 2012 } else 2013 pr_warn("could not find mgid entry\n"); 2014 2015 mutex_unlock(&mqp->mutex); 2016 2017 return 0; 2018 } 2019 2020 static int init_node_data(struct mlx4_ib_dev *dev) 2021 { 2022 struct ib_smp *in_mad = NULL; 2023 struct ib_smp *out_mad = NULL; 2024 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 2025 int err = -ENOMEM; 2026 2027 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 2028 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 2029 if (!in_mad || !out_mad) 2030 goto out; 2031 2032 init_query_mad(in_mad); 2033 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 2034 if (mlx4_is_master(dev->dev)) 2035 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 2036 2037 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2038 if (err) 2039 goto out; 2040 2041 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 2042 2043 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 2044 2045 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2046 if (err) 2047 goto out; 2048 2049 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 2050 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 2051 2052 out: 2053 kfree(in_mad); 2054 kfree(out_mad); 2055 return err; 2056 } 2057 2058 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 2059 char *buf) 2060 { 2061 struct mlx4_ib_dev *dev = 2062 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 2063 return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device); 2064 } 2065 2066 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 2067 char *buf) 2068 { 2069 struct mlx4_ib_dev *dev = 2070 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 2071 return sprintf(buf, "%x\n", dev->dev->rev_id); 2072 } 2073 2074 static ssize_t show_board(struct device *device, struct device_attribute *attr, 2075 char *buf) 2076 { 2077 struct mlx4_ib_dev *dev = 2078 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 2079 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 2080 dev->dev->board_id); 2081 } 2082 2083 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 2084 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 2085 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 2086 2087 static struct device_attribute *mlx4_class_attributes[] = { 2088 &dev_attr_hw_rev, 2089 &dev_attr_hca_type, 2090 &dev_attr_board_id 2091 }; 2092 2093 struct diag_counter { 2094 const char *name; 2095 u32 offset; 2096 }; 2097 2098 #define DIAG_COUNTER(_name, _offset) \ 2099 { .name = #_name, .offset = _offset } 2100 2101 static const struct diag_counter diag_basic[] = { 2102 DIAG_COUNTER(rq_num_lle, 0x00), 2103 DIAG_COUNTER(sq_num_lle, 0x04), 2104 DIAG_COUNTER(rq_num_lqpoe, 0x08), 2105 DIAG_COUNTER(sq_num_lqpoe, 0x0C), 2106 DIAG_COUNTER(rq_num_lpe, 0x18), 2107 DIAG_COUNTER(sq_num_lpe, 0x1C), 2108 DIAG_COUNTER(rq_num_wrfe, 0x20), 2109 DIAG_COUNTER(sq_num_wrfe, 0x24), 2110 DIAG_COUNTER(sq_num_mwbe, 0x2C), 2111 DIAG_COUNTER(sq_num_bre, 0x34), 2112 DIAG_COUNTER(sq_num_rire, 0x44), 2113 DIAG_COUNTER(rq_num_rire, 0x48), 2114 DIAG_COUNTER(sq_num_rae, 0x4C), 2115 DIAG_COUNTER(rq_num_rae, 0x50), 2116 DIAG_COUNTER(sq_num_roe, 0x54), 2117 DIAG_COUNTER(sq_num_tree, 0x5C), 2118 DIAG_COUNTER(sq_num_rree, 0x64), 2119 DIAG_COUNTER(rq_num_rnr, 0x68), 2120 DIAG_COUNTER(sq_num_rnr, 0x6C), 2121 DIAG_COUNTER(rq_num_oos, 0x100), 2122 DIAG_COUNTER(sq_num_oos, 0x104), 2123 }; 2124 2125 static const struct diag_counter diag_ext[] = { 2126 DIAG_COUNTER(rq_num_dup, 0x130), 2127 DIAG_COUNTER(sq_num_to, 0x134), 2128 }; 2129 2130 static const struct diag_counter diag_device_only[] = { 2131 DIAG_COUNTER(num_cqovf, 0x1A0), 2132 DIAG_COUNTER(rq_num_udsdprd, 0x118), 2133 }; 2134 2135 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev, 2136 u8 port_num) 2137 { 2138 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2139 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2140 2141 if (!diag[!!port_num].name) 2142 return NULL; 2143 2144 return rdma_alloc_hw_stats_struct(diag[!!port_num].name, 2145 diag[!!port_num].num_counters, 2146 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2147 } 2148 2149 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev, 2150 struct rdma_hw_stats *stats, 2151 u8 port, int index) 2152 { 2153 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2154 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2155 u32 hw_value[ARRAY_SIZE(diag_device_only) + 2156 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {}; 2157 int ret; 2158 int i; 2159 2160 ret = mlx4_query_diag_counters(dev->dev, 2161 MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS, 2162 diag[!!port].offset, hw_value, 2163 diag[!!port].num_counters, port); 2164 2165 if (ret) 2166 return ret; 2167 2168 for (i = 0; i < diag[!!port].num_counters; i++) 2169 stats->value[i] = hw_value[i]; 2170 2171 return diag[!!port].num_counters; 2172 } 2173 2174 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev, 2175 const char ***name, 2176 u32 **offset, 2177 u32 *num, 2178 bool port) 2179 { 2180 u32 num_counters; 2181 2182 num_counters = ARRAY_SIZE(diag_basic); 2183 2184 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) 2185 num_counters += ARRAY_SIZE(diag_ext); 2186 2187 if (!port) 2188 num_counters += ARRAY_SIZE(diag_device_only); 2189 2190 *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL); 2191 if (!*name) 2192 return -ENOMEM; 2193 2194 *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL); 2195 if (!*offset) 2196 goto err_name; 2197 2198 *num = num_counters; 2199 2200 return 0; 2201 2202 err_name: 2203 kfree(*name); 2204 return -ENOMEM; 2205 } 2206 2207 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev, 2208 const char **name, 2209 u32 *offset, 2210 bool port) 2211 { 2212 int i; 2213 int j; 2214 2215 for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) { 2216 name[i] = diag_basic[i].name; 2217 offset[i] = diag_basic[i].offset; 2218 } 2219 2220 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) { 2221 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) { 2222 name[j] = diag_ext[i].name; 2223 offset[j] = diag_ext[i].offset; 2224 } 2225 } 2226 2227 if (!port) { 2228 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) { 2229 name[j] = diag_device_only[i].name; 2230 offset[j] = diag_device_only[i].offset; 2231 } 2232 } 2233 } 2234 2235 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev) 2236 { 2237 struct mlx4_ib_diag_counters *diag = ibdev->diag_counters; 2238 int i; 2239 int ret; 2240 bool per_port = !!(ibdev->dev->caps.flags2 & 2241 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT); 2242 2243 if (mlx4_is_slave(ibdev->dev)) 2244 return 0; 2245 2246 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2247 /* i == 1 means we are building port counters */ 2248 if (i && !per_port) 2249 continue; 2250 2251 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name, 2252 &diag[i].offset, 2253 &diag[i].num_counters, i); 2254 if (ret) 2255 goto err_alloc; 2256 2257 mlx4_ib_fill_diag_counters(ibdev, diag[i].name, 2258 diag[i].offset, i); 2259 } 2260 2261 ibdev->ib_dev.get_hw_stats = mlx4_ib_get_hw_stats; 2262 ibdev->ib_dev.alloc_hw_stats = mlx4_ib_alloc_hw_stats; 2263 2264 return 0; 2265 2266 err_alloc: 2267 if (i) { 2268 kfree(diag[i - 1].name); 2269 kfree(diag[i - 1].offset); 2270 } 2271 2272 return ret; 2273 } 2274 2275 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev) 2276 { 2277 int i; 2278 2279 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2280 kfree(ibdev->diag_counters[i].offset); 2281 kfree(ibdev->diag_counters[i].name); 2282 } 2283 } 2284 2285 #define MLX4_IB_INVALID_MAC ((u64)-1) 2286 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 2287 struct net_device *dev, 2288 int port) 2289 { 2290 u64 new_smac = 0; 2291 u64 release_mac = MLX4_IB_INVALID_MAC; 2292 struct mlx4_ib_qp *qp; 2293 2294 new_smac = mlx4_mac_to_u64(IF_LLADDR(dev)); 2295 2296 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); 2297 2298 /* no need for update QP1 and mac registration in non-SRIOV */ 2299 if (!mlx4_is_mfunc(ibdev->dev)) 2300 return; 2301 2302 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 2303 qp = ibdev->qp1_proxy[port - 1]; 2304 if (qp) { 2305 int new_smac_index; 2306 u64 old_smac; 2307 struct mlx4_update_qp_params update_params; 2308 2309 mutex_lock(&qp->mutex); 2310 old_smac = qp->pri.smac; 2311 if (new_smac == old_smac) 2312 goto unlock; 2313 2314 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 2315 2316 if (new_smac_index < 0) 2317 goto unlock; 2318 2319 update_params.smac_index = new_smac_index; 2320 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, 2321 &update_params)) { 2322 release_mac = new_smac; 2323 goto unlock; 2324 } 2325 /* if old port was zero, no mac was yet registered for this QP */ 2326 if (qp->pri.smac_port) 2327 release_mac = old_smac; 2328 qp->pri.smac = new_smac; 2329 qp->pri.smac_port = port; 2330 qp->pri.smac_index = new_smac_index; 2331 } 2332 2333 unlock: 2334 if (release_mac != MLX4_IB_INVALID_MAC) 2335 mlx4_unregister_mac(ibdev->dev, port, release_mac); 2336 if (qp) 2337 mutex_unlock(&qp->mutex); 2338 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 2339 } 2340 2341 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, 2342 struct net_device *dev, 2343 unsigned long event) 2344 2345 { 2346 struct mlx4_ib_iboe *iboe; 2347 int update_qps_port = -1; 2348 int port; 2349 2350 iboe = &ibdev->iboe; 2351 2352 spin_lock_bh(&iboe->lock); 2353 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 2354 2355 iboe->netdevs[port - 1] = 2356 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 2357 2358 if (dev == iboe->netdevs[port - 1] && 2359 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || 2360 event == NETDEV_UP || event == NETDEV_CHANGE)) 2361 update_qps_port = port; 2362 2363 } 2364 spin_unlock_bh(&iboe->lock); 2365 2366 if (update_qps_port > 0) 2367 mlx4_ib_update_qps(ibdev, dev, update_qps_port); 2368 } 2369 2370 static int mlx4_ib_netdev_event(struct notifier_block *this, 2371 unsigned long event, void *ptr) 2372 { 2373 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 2374 struct mlx4_ib_dev *ibdev; 2375 2376 if (dev->if_vnet != &init_net) 2377 return NOTIFY_DONE; 2378 2379 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 2380 mlx4_ib_scan_netdevs(ibdev, dev, event); 2381 2382 return NOTIFY_DONE; 2383 } 2384 2385 static void init_pkeys(struct mlx4_ib_dev *ibdev) 2386 { 2387 int port; 2388 int slave; 2389 int i; 2390 2391 if (mlx4_is_master(ibdev->dev)) { 2392 for (slave = 0; slave <= ibdev->dev->persist->num_vfs; 2393 ++slave) { 2394 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2395 for (i = 0; 2396 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2397 ++i) { 2398 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 2399 /* master has the identity virt2phys pkey mapping */ 2400 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 2401 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 2402 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 2403 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 2404 } 2405 } 2406 } 2407 /* initialize pkey cache */ 2408 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2409 for (i = 0; 2410 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2411 ++i) 2412 ibdev->pkeys.phys_pkey_cache[port-1][i] = 2413 (i) ? 0 : 0xFFFF; 2414 } 2415 } 2416 } 2417 2418 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2419 { 2420 int i, j, eq = 0, total_eqs = 0; 2421 2422 ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors, 2423 sizeof(ibdev->eq_table[0]), GFP_KERNEL); 2424 if (!ibdev->eq_table) 2425 return; 2426 2427 for (i = 1; i <= dev->caps.num_ports; i++) { 2428 for (j = 0; j < mlx4_get_eqs_per_port(dev, i); 2429 j++, total_eqs++) { 2430 if (i > 1 && mlx4_is_eq_shared(dev, total_eqs)) 2431 continue; 2432 ibdev->eq_table[eq] = total_eqs; 2433 if (!mlx4_assign_eq(dev, i, 2434 &ibdev->eq_table[eq])) 2435 eq++; 2436 else 2437 ibdev->eq_table[eq] = -1; 2438 } 2439 } 2440 2441 for (i = eq; i < dev->caps.num_comp_vectors; 2442 ibdev->eq_table[i++] = -1) 2443 ; 2444 2445 /* Advertise the new number of EQs to clients */ 2446 ibdev->ib_dev.num_comp_vectors = eq; 2447 } 2448 2449 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2450 { 2451 int i; 2452 int total_eqs = ibdev->ib_dev.num_comp_vectors; 2453 2454 /* no eqs were allocated */ 2455 if (!ibdev->eq_table) 2456 return; 2457 2458 /* Reset the advertised EQ number */ 2459 ibdev->ib_dev.num_comp_vectors = 0; 2460 2461 for (i = 0; i < total_eqs; i++) 2462 mlx4_release_eq(dev, ibdev->eq_table[i]); 2463 2464 kfree(ibdev->eq_table); 2465 ibdev->eq_table = NULL; 2466 } 2467 2468 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num, 2469 struct ib_port_immutable *immutable) 2470 { 2471 struct ib_port_attr attr; 2472 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 2473 int err; 2474 2475 err = mlx4_ib_query_port(ibdev, port_num, &attr); 2476 if (err) 2477 return err; 2478 2479 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2480 immutable->gid_tbl_len = attr.gid_tbl_len; 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 } else { 2485 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) 2486 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 2487 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 2488 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE | 2489 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2490 } 2491 2492 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2493 2494 return 0; 2495 } 2496 2497 static void get_fw_ver_str(struct ib_device *device, char *str, 2498 size_t str_len) 2499 { 2500 struct mlx4_ib_dev *dev = 2501 container_of(device, struct mlx4_ib_dev, ib_dev); 2502 snprintf(str, str_len, "%d.%d.%d", 2503 (int) (dev->dev->caps.fw_ver >> 32), 2504 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 2505 (int) dev->dev->caps.fw_ver & 0xffff); 2506 } 2507 2508 static void *mlx4_ib_add(struct mlx4_dev *dev) 2509 { 2510 struct mlx4_ib_dev *ibdev; 2511 int num_ports; 2512 int i, j; 2513 int err; 2514 struct mlx4_ib_iboe *iboe; 2515 int ib_num_ports = 0; 2516 int num_req_counters; 2517 int allocated; 2518 u32 counter_index; 2519 struct counter_index *new_counter_index = NULL; 2520 2521 pr_info_once("%s", mlx4_ib_version); 2522 2523 num_ports = 0; 2524 mlx4_foreach_ib_transport_port(i, dev) 2525 num_ports++; 2526 2527 /* No point in registering a device with no ports... */ 2528 if (num_ports == 0) 2529 return NULL; 2530 2531 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 2532 if (!ibdev) { 2533 dev_err(&dev->persist->pdev->dev, 2534 "Device struct alloc failed\n"); 2535 return NULL; 2536 } 2537 2538 iboe = &ibdev->iboe; 2539 2540 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 2541 goto err_dealloc; 2542 2543 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 2544 goto err_pd; 2545 2546 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 2547 PAGE_SIZE); 2548 if (!ibdev->uar_map) 2549 goto err_uar; 2550 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 2551 2552 ibdev->dev = dev; 2553 ibdev->bond_next_port = 0; 2554 2555 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 2556 ibdev->ib_dev.owner = THIS_MODULE; 2557 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 2558 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 2559 ibdev->num_ports = num_ports; 2560 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ? 2561 1 : ibdev->num_ports; 2562 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2563 ibdev->ib_dev.dma_device = &dev->persist->pdev->dev; 2564 ibdev->ib_dev.get_netdev = mlx4_ib_get_netdev; 2565 ibdev->ib_dev.add_gid = mlx4_ib_add_gid; 2566 ibdev->ib_dev.del_gid = mlx4_ib_del_gid; 2567 2568 if (dev->caps.userspace_caps) 2569 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 2570 else 2571 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 2572 2573 ibdev->ib_dev.uverbs_cmd_mask = 2574 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 2575 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 2576 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 2577 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 2578 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 2579 (1ull << IB_USER_VERBS_CMD_REG_MR) | 2580 (1ull << IB_USER_VERBS_CMD_REREG_MR) | 2581 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 2582 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 2583 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 2584 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 2585 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 2586 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 2587 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 2588 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 2589 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 2590 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 2591 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 2592 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 2593 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 2594 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 2595 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 2596 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 2597 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 2598 2599 ibdev->ib_dev.query_device = mlx4_ib_query_device; 2600 ibdev->ib_dev.query_port = mlx4_ib_query_port; 2601 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 2602 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 2603 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 2604 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 2605 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 2606 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 2607 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 2608 ibdev->ib_dev.mmap = mlx4_ib_mmap; 2609 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 2610 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 2611 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 2612 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 2613 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 2614 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 2615 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 2616 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 2617 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 2618 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 2619 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 2620 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 2621 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 2622 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 2623 ibdev->ib_dev.post_send = mlx4_ib_post_send; 2624 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 2625 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 2626 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 2627 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 2628 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 2629 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 2630 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 2631 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 2632 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 2633 ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr; 2634 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 2635 ibdev->ib_dev.alloc_mr = mlx4_ib_alloc_mr; 2636 ibdev->ib_dev.map_mr_sg = mlx4_ib_map_mr_sg; 2637 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 2638 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 2639 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 2640 ibdev->ib_dev.get_port_immutable = mlx4_port_immutable; 2641 ibdev->ib_dev.get_dev_fw_str = get_fw_ver_str; 2642 2643 if (!mlx4_is_slave(ibdev->dev)) { 2644 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 2645 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 2646 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 2647 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 2648 } 2649 2650 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2651 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 2652 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw; 2653 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw; 2654 2655 ibdev->ib_dev.uverbs_cmd_mask |= 2656 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 2657 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 2658 } 2659 2660 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2661 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 2662 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 2663 ibdev->ib_dev.uverbs_cmd_mask |= 2664 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 2665 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 2666 } 2667 2668 if (check_flow_steering_support(dev)) { 2669 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2670 ibdev->ib_dev.create_flow = mlx4_ib_create_flow; 2671 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow; 2672 2673 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2674 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 2675 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 2676 } 2677 2678 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2679 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) | 2680 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) | 2681 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP); 2682 2683 mlx4_ib_alloc_eqs(dev, ibdev); 2684 2685 spin_lock_init(&iboe->lock); 2686 2687 if (init_node_data(ibdev)) 2688 goto err_map; 2689 mlx4_init_sl2vl_tbl(ibdev); 2690 2691 for (i = 0; i < ibdev->num_ports; ++i) { 2692 mutex_init(&ibdev->counters_table[i].mutex); 2693 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list); 2694 } 2695 2696 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; 2697 for (i = 0; i < num_req_counters; ++i) { 2698 mutex_init(&ibdev->qp1_proxy_lock[i]); 2699 allocated = 0; 2700 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2701 IB_LINK_LAYER_ETHERNET) { 2702 err = mlx4_counter_alloc(ibdev->dev, &counter_index); 2703 /* if failed to allocate a new counter, use default */ 2704 if (err) 2705 counter_index = 2706 mlx4_get_default_counter_index(dev, 2707 i + 1); 2708 else 2709 allocated = 1; 2710 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */ 2711 counter_index = mlx4_get_default_counter_index(dev, 2712 i + 1); 2713 } 2714 new_counter_index = kmalloc(sizeof(*new_counter_index), 2715 GFP_KERNEL); 2716 if (!new_counter_index) { 2717 if (allocated) 2718 mlx4_counter_free(ibdev->dev, counter_index); 2719 goto err_counter; 2720 } 2721 new_counter_index->index = counter_index; 2722 new_counter_index->allocated = allocated; 2723 list_add_tail(&new_counter_index->list, 2724 &ibdev->counters_table[i].counters_list); 2725 ibdev->counters_table[i].default_counter = counter_index; 2726 pr_info("counter index %d for port %d allocated %d\n", 2727 counter_index, i + 1, allocated); 2728 } 2729 if (mlx4_is_bonded(dev)) 2730 for (i = 1; i < ibdev->num_ports ; ++i) { 2731 new_counter_index = 2732 kmalloc(sizeof(struct counter_index), 2733 GFP_KERNEL); 2734 if (!new_counter_index) 2735 goto err_counter; 2736 new_counter_index->index = counter_index; 2737 new_counter_index->allocated = 0; 2738 list_add_tail(&new_counter_index->list, 2739 &ibdev->counters_table[i].counters_list); 2740 ibdev->counters_table[i].default_counter = 2741 counter_index; 2742 } 2743 2744 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2745 ib_num_ports++; 2746 2747 spin_lock_init(&ibdev->sm_lock); 2748 mutex_init(&ibdev->cap_mask_mutex); 2749 INIT_LIST_HEAD(&ibdev->qp_list); 2750 spin_lock_init(&ibdev->reset_flow_resource_lock); 2751 2752 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2753 ib_num_ports) { 2754 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2755 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2756 MLX4_IB_UC_STEER_QPN_ALIGN, 2757 &ibdev->steer_qpn_base, 0); 2758 if (err) 2759 goto err_counter; 2760 2761 ibdev->ib_uc_qpns_bitmap = 2762 kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) * 2763 sizeof(long), 2764 GFP_KERNEL); 2765 if (!ibdev->ib_uc_qpns_bitmap) { 2766 dev_err(&dev->persist->pdev->dev, 2767 "bit map alloc failed\n"); 2768 goto err_steer_qp_release; 2769 } 2770 2771 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count); 2772 2773 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2774 dev, ibdev->steer_qpn_base, 2775 ibdev->steer_qpn_base + 2776 ibdev->steer_qpn_count - 1); 2777 if (err) 2778 goto err_steer_free_bitmap; 2779 } 2780 2781 for (j = 1; j <= ibdev->dev->caps.num_ports; j++) 2782 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); 2783 2784 if (mlx4_ib_alloc_diag_counters(ibdev)) 2785 goto err_steer_free_bitmap; 2786 2787 if (ib_register_device(&ibdev->ib_dev, NULL)) 2788 goto err_diag_counters; 2789 2790 if (mlx4_ib_mad_init(ibdev)) 2791 goto err_reg; 2792 2793 if (mlx4_ib_init_sriov(ibdev)) 2794 goto err_mad; 2795 2796 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE || 2797 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { 2798 if (!iboe->nb.notifier_call) { 2799 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2800 err = register_netdevice_notifier(&iboe->nb); 2801 if (err) { 2802 iboe->nb.notifier_call = NULL; 2803 goto err_notif; 2804 } 2805 } 2806 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { 2807 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT); 2808 if (err) { 2809 goto err_notif; 2810 } 2811 } 2812 } 2813 2814 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 2815 if (device_create_file(&ibdev->ib_dev.dev, 2816 mlx4_class_attributes[j])) 2817 goto err_notif; 2818 } 2819 2820 ibdev->ib_active = true; 2821 2822 if (mlx4_is_mfunc(ibdev->dev)) 2823 init_pkeys(ibdev); 2824 2825 /* create paravirt contexts for any VFs which are active */ 2826 if (mlx4_is_master(ibdev->dev)) { 2827 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2828 if (j == mlx4_master_func_num(ibdev->dev)) 2829 continue; 2830 if (mlx4_is_slave_active(ibdev->dev, j)) 2831 do_slave_init(ibdev, j, 1); 2832 } 2833 } 2834 return ibdev; 2835 2836 err_notif: 2837 if (ibdev->iboe.nb.notifier_call) { 2838 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2839 pr_warn("failure unregistering notifier\n"); 2840 ibdev->iboe.nb.notifier_call = NULL; 2841 } 2842 flush_workqueue(wq); 2843 2844 mlx4_ib_close_sriov(ibdev); 2845 2846 err_mad: 2847 mlx4_ib_mad_cleanup(ibdev); 2848 2849 err_reg: 2850 ib_unregister_device(&ibdev->ib_dev); 2851 2852 err_diag_counters: 2853 mlx4_ib_diag_cleanup(ibdev); 2854 2855 err_steer_free_bitmap: 2856 kfree(ibdev->ib_uc_qpns_bitmap); 2857 2858 err_steer_qp_release: 2859 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 2860 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2861 ibdev->steer_qpn_count); 2862 err_counter: 2863 for (i = 0; i < ibdev->num_ports; ++i) 2864 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]); 2865 2866 err_map: 2867 iounmap(ibdev->uar_map); 2868 2869 err_uar: 2870 mlx4_uar_free(dev, &ibdev->priv_uar); 2871 2872 err_pd: 2873 mlx4_pd_free(dev, ibdev->priv_pdn); 2874 2875 err_dealloc: 2876 ib_dealloc_device(&ibdev->ib_dev); 2877 2878 return NULL; 2879 } 2880 2881 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2882 { 2883 int offset; 2884 2885 WARN_ON(!dev->ib_uc_qpns_bitmap); 2886 2887 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2888 dev->steer_qpn_count, 2889 get_count_order(count)); 2890 if (offset < 0) 2891 return offset; 2892 2893 *qpn = dev->steer_qpn_base + offset; 2894 return 0; 2895 } 2896 2897 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2898 { 2899 if (!qpn || 2900 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2901 return; 2902 2903 BUG_ON(qpn < dev->steer_qpn_base); 2904 2905 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2906 qpn - dev->steer_qpn_base, 2907 get_count_order(count)); 2908 } 2909 2910 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2911 int is_attach) 2912 { 2913 int err; 2914 size_t flow_size; 2915 struct ib_flow_attr *flow = NULL; 2916 struct ib_flow_spec_ib *ib_spec; 2917 2918 if (is_attach) { 2919 flow_size = sizeof(struct ib_flow_attr) + 2920 sizeof(struct ib_flow_spec_ib); 2921 flow = kzalloc(flow_size, GFP_KERNEL); 2922 if (!flow) 2923 return -ENOMEM; 2924 flow->port = mqp->port; 2925 flow->num_of_specs = 1; 2926 flow->size = flow_size; 2927 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2928 ib_spec->type = IB_FLOW_SPEC_IB; 2929 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2930 /* Add an empty rule for IB L2 */ 2931 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2932 2933 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, 2934 IB_FLOW_DOMAIN_NIC, 2935 MLX4_FS_REGULAR, 2936 &mqp->reg_id); 2937 } else { 2938 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2939 } 2940 kfree(flow); 2941 return err; 2942 } 2943 2944 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 2945 { 2946 struct mlx4_ib_dev *ibdev = ibdev_ptr; 2947 int p; 2948 2949 ibdev->ib_active = false; 2950 flush_workqueue(wq); 2951 2952 mlx4_ib_close_sriov(ibdev); 2953 mlx4_ib_mad_cleanup(ibdev); 2954 ib_unregister_device(&ibdev->ib_dev); 2955 mlx4_ib_diag_cleanup(ibdev); 2956 if (ibdev->iboe.nb.notifier_call) { 2957 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2958 pr_warn("failure unregistering notifier\n"); 2959 ibdev->iboe.nb.notifier_call = NULL; 2960 } 2961 2962 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) { 2963 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2964 ibdev->steer_qpn_count); 2965 kfree(ibdev->ib_uc_qpns_bitmap); 2966 } 2967 2968 iounmap(ibdev->uar_map); 2969 for (p = 0; p < ibdev->num_ports; ++p) 2970 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]); 2971 2972 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 2973 mlx4_CLOSE_PORT(dev, p); 2974 2975 mlx4_ib_free_eqs(dev, ibdev); 2976 2977 mlx4_uar_free(dev, &ibdev->priv_uar); 2978 mlx4_pd_free(dev, ibdev->priv_pdn); 2979 ib_dealloc_device(&ibdev->ib_dev); 2980 } 2981 2982 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 2983 { 2984 struct mlx4_ib_demux_work **dm = NULL; 2985 struct mlx4_dev *dev = ibdev->dev; 2986 int i; 2987 unsigned long flags; 2988 struct mlx4_active_ports actv_ports; 2989 unsigned int ports; 2990 unsigned int first_port; 2991 2992 if (!mlx4_is_master(dev)) 2993 return; 2994 2995 actv_ports = mlx4_get_active_ports(dev, slave); 2996 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 2997 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 2998 2999 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); 3000 if (!dm) { 3001 pr_err("failed to allocate memory for tunneling qp update\n"); 3002 return; 3003 } 3004 3005 for (i = 0; i < ports; i++) { 3006 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 3007 if (!dm[i]) { 3008 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 3009 while (--i >= 0) 3010 kfree(dm[i]); 3011 goto out; 3012 } 3013 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 3014 dm[i]->port = first_port + i + 1; 3015 dm[i]->slave = slave; 3016 dm[i]->do_init = do_init; 3017 dm[i]->dev = ibdev; 3018 } 3019 /* initialize or tear down tunnel QPs for the slave */ 3020 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 3021 if (!ibdev->sriov.is_going_down) { 3022 for (i = 0; i < ports; i++) 3023 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 3024 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3025 } else { 3026 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3027 for (i = 0; i < ports; i++) 3028 kfree(dm[i]); 3029 } 3030 out: 3031 kfree(dm); 3032 return; 3033 } 3034 3035 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev) 3036 { 3037 struct mlx4_ib_qp *mqp; 3038 unsigned long flags_qp; 3039 unsigned long flags_cq; 3040 struct mlx4_ib_cq *send_mcq, *recv_mcq; 3041 struct list_head cq_notify_list; 3042 struct mlx4_cq *mcq; 3043 unsigned long flags; 3044 3045 pr_warn("mlx4_ib_handle_catas_error was started\n"); 3046 INIT_LIST_HEAD(&cq_notify_list); 3047 3048 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 3049 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 3050 3051 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 3052 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 3053 if (mqp->sq.tail != mqp->sq.head) { 3054 send_mcq = to_mcq(mqp->ibqp.send_cq); 3055 spin_lock_irqsave(&send_mcq->lock, flags_cq); 3056 if (send_mcq->mcq.comp && 3057 mqp->ibqp.send_cq->comp_handler) { 3058 if (!send_mcq->mcq.reset_notify_added) { 3059 send_mcq->mcq.reset_notify_added = 1; 3060 list_add_tail(&send_mcq->mcq.reset_notify, 3061 &cq_notify_list); 3062 } 3063 } 3064 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 3065 } 3066 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 3067 /* Now, handle the QP's receive queue */ 3068 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 3069 /* no handling is needed for SRQ */ 3070 if (!mqp->ibqp.srq) { 3071 if (mqp->rq.tail != mqp->rq.head) { 3072 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 3073 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 3074 if (recv_mcq->mcq.comp && 3075 mqp->ibqp.recv_cq->comp_handler) { 3076 if (!recv_mcq->mcq.reset_notify_added) { 3077 recv_mcq->mcq.reset_notify_added = 1; 3078 list_add_tail(&recv_mcq->mcq.reset_notify, 3079 &cq_notify_list); 3080 } 3081 } 3082 spin_unlock_irqrestore(&recv_mcq->lock, 3083 flags_cq); 3084 } 3085 } 3086 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 3087 } 3088 3089 list_for_each_entry(mcq, &cq_notify_list, reset_notify) { 3090 mcq->comp(mcq); 3091 } 3092 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 3093 pr_warn("mlx4_ib_handle_catas_error ended\n"); 3094 } 3095 3096 static void handle_bonded_port_state_event(struct work_struct *work) 3097 { 3098 struct ib_event_work *ew = 3099 container_of(work, struct ib_event_work, work); 3100 struct mlx4_ib_dev *ibdev = ew->ib_dev; 3101 enum ib_port_state bonded_port_state = IB_PORT_NOP; 3102 int i; 3103 struct ib_event ibev; 3104 3105 kfree(ew); 3106 spin_lock_bh(&ibdev->iboe.lock); 3107 for (i = 0; i < MLX4_MAX_PORTS; ++i) { 3108 struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; 3109 enum ib_port_state curr_port_state; 3110 3111 if (!curr_netdev) 3112 continue; 3113 3114 curr_port_state = 3115 ((curr_netdev->if_drv_flags & IFF_DRV_RUNNING) != 0 && 3116 curr_netdev->if_link_state == LINK_STATE_UP) ? 3117 IB_PORT_ACTIVE : IB_PORT_DOWN; 3118 3119 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ? 3120 curr_port_state : IB_PORT_ACTIVE; 3121 } 3122 spin_unlock_bh(&ibdev->iboe.lock); 3123 3124 ibev.device = &ibdev->ib_dev; 3125 ibev.element.port_num = 1; 3126 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ? 3127 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 3128 3129 ib_dispatch_event(&ibev); 3130 } 3131 3132 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port) 3133 { 3134 u64 sl2vl; 3135 int err; 3136 3137 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl); 3138 if (err) { 3139 pr_err("Unable to get current sl to vl mapping for port %d. Using all zeroes (%d)\n", 3140 port, err); 3141 sl2vl = 0; 3142 } 3143 atomic64_set(&mdev->sl2vl[port - 1], sl2vl); 3144 } 3145 3146 static void ib_sl2vl_update_work(struct work_struct *work) 3147 { 3148 struct ib_event_work *ew = container_of(work, struct ib_event_work, work); 3149 struct mlx4_ib_dev *mdev = ew->ib_dev; 3150 int port = ew->port; 3151 3152 mlx4_ib_sl2vl_update(mdev, port); 3153 3154 kfree(ew); 3155 } 3156 3157 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev, 3158 int port) 3159 { 3160 struct ib_event_work *ew; 3161 3162 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3163 if (ew) { 3164 INIT_WORK(&ew->work, ib_sl2vl_update_work); 3165 ew->port = port; 3166 ew->ib_dev = ibdev; 3167 queue_work(wq, &ew->work); 3168 } else { 3169 pr_err("failed to allocate memory for sl2vl update work\n"); 3170 } 3171 } 3172 3173 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 3174 enum mlx4_dev_event event, unsigned long param) 3175 { 3176 struct ib_event ibev; 3177 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 3178 struct mlx4_eqe *eqe = NULL; 3179 struct ib_event_work *ew; 3180 int p = 0; 3181 3182 if (mlx4_is_bonded(dev) && 3183 ((event == MLX4_DEV_EVENT_PORT_UP) || 3184 (event == MLX4_DEV_EVENT_PORT_DOWN))) { 3185 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3186 if (!ew) 3187 return; 3188 INIT_WORK(&ew->work, handle_bonded_port_state_event); 3189 ew->ib_dev = ibdev; 3190 queue_work(wq, &ew->work); 3191 return; 3192 } 3193 3194 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 3195 eqe = (struct mlx4_eqe *)param; 3196 else 3197 p = (int) param; 3198 3199 switch (event) { 3200 case MLX4_DEV_EVENT_PORT_UP: 3201 if (p > ibdev->num_ports) 3202 return; 3203 if (!mlx4_is_slave(dev) && 3204 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 3205 IB_LINK_LAYER_INFINIBAND) { 3206 if (mlx4_is_master(dev)) 3207 mlx4_ib_invalidate_all_guid_record(ibdev, p); 3208 if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST && 3209 !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT)) 3210 mlx4_sched_ib_sl2vl_update_work(ibdev, p); 3211 } 3212 ibev.event = IB_EVENT_PORT_ACTIVE; 3213 break; 3214 3215 case MLX4_DEV_EVENT_PORT_DOWN: 3216 if (p > ibdev->num_ports) 3217 return; 3218 ibev.event = IB_EVENT_PORT_ERR; 3219 break; 3220 3221 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 3222 ibdev->ib_active = false; 3223 ibev.event = IB_EVENT_DEVICE_FATAL; 3224 mlx4_ib_handle_catas_error(ibdev); 3225 break; 3226 3227 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 3228 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 3229 if (!ew) { 3230 pr_err("failed to allocate memory for events work\n"); 3231 break; 3232 } 3233 3234 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 3235 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 3236 ew->ib_dev = ibdev; 3237 /* need to queue only for port owner, which uses GEN_EQE */ 3238 if (mlx4_is_master(dev)) 3239 queue_work(wq, &ew->work); 3240 else 3241 handle_port_mgmt_change_event(&ew->work); 3242 return; 3243 3244 case MLX4_DEV_EVENT_SLAVE_INIT: 3245 /* here, p is the slave id */ 3246 do_slave_init(ibdev, p, 1); 3247 if (mlx4_is_master(dev)) { 3248 int i; 3249 3250 for (i = 1; i <= ibdev->num_ports; i++) { 3251 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3252 == IB_LINK_LAYER_INFINIBAND) 3253 mlx4_ib_slave_alias_guid_event(ibdev, 3254 p, i, 3255 1); 3256 } 3257 } 3258 return; 3259 3260 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 3261 if (mlx4_is_master(dev)) { 3262 int i; 3263 3264 for (i = 1; i <= ibdev->num_ports; i++) { 3265 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3266 == IB_LINK_LAYER_INFINIBAND) 3267 mlx4_ib_slave_alias_guid_event(ibdev, 3268 p, i, 3269 0); 3270 } 3271 } 3272 /* here, p is the slave id */ 3273 do_slave_init(ibdev, p, 0); 3274 return; 3275 3276 default: 3277 return; 3278 } 3279 3280 ibev.device = ibdev_ptr; 3281 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; 3282 3283 ib_dispatch_event(&ibev); 3284 } 3285 3286 static struct mlx4_interface mlx4_ib_interface = { 3287 .add = mlx4_ib_add, 3288 .remove = mlx4_ib_remove, 3289 .event = mlx4_ib_event, 3290 .protocol = MLX4_PROT_IB_IPV6, 3291 .flags = MLX4_INTFF_BONDING 3292 }; 3293 3294 static int __init mlx4_ib_init(void) 3295 { 3296 int err; 3297 3298 wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM); 3299 if (!wq) 3300 return -ENOMEM; 3301 3302 err = mlx4_ib_mcg_init(); 3303 if (err) 3304 goto clean_wq; 3305 3306 err = mlx4_register_interface(&mlx4_ib_interface); 3307 if (err) 3308 goto clean_mcg; 3309 3310 return 0; 3311 3312 clean_mcg: 3313 mlx4_ib_mcg_destroy(); 3314 3315 clean_wq: 3316 destroy_workqueue(wq); 3317 return err; 3318 } 3319 3320 static void __exit mlx4_ib_cleanup(void) 3321 { 3322 mlx4_unregister_interface(&mlx4_ib_interface); 3323 mlx4_ib_mcg_destroy(); 3324 destroy_workqueue(wq); 3325 } 3326 3327 module_init_order(mlx4_ib_init, SI_ORDER_SEVENTH); 3328 module_exit_order(mlx4_ib_cleanup, SI_ORDER_SEVENTH); 3329 3330 static int 3331 mlx4ib_evhand(module_t mod, int event, void *arg) 3332 { 3333 return (0); 3334 } 3335 3336 static moduledata_t mlx4ib_mod = { 3337 .name = "mlx4ib", 3338 .evhand = mlx4ib_evhand, 3339 }; 3340 3341 DECLARE_MODULE(mlx4ib, mlx4ib_mod, SI_SUB_LAST, SI_ORDER_ANY); 3342 MODULE_DEPEND(mlx4ib, mlx4, 1, 1, 1); 3343 MODULE_DEPEND(mlx4ib, ibcore, 1, 1, 1); 3344 MODULE_DEPEND(mlx4ib, linuxkpi, 1, 1, 1); 3345