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/inetdevice.h> 42 #include <linux/if_vlan.h> 43 #include <linux/fs.h> 44 #include <linux/rcupdate.h> 45 #include <linux/notifier.h> 46 #include <linux/delay.h> 47 48 #include <net/ipv6.h> 49 50 #include <rdma/ib_smi.h> 51 #include <rdma/ib_user_verbs.h> 52 #include <rdma/ib_addr.h> 53 #include <rdma/ib_cache.h> 54 55 #include <dev/mlx4/driver.h> 56 #include <dev/mlx4/cmd.h> 57 #include <dev/mlx4/qp.h> 58 #include <linux/sched.h> 59 #include <linux/page.h> 60 #include <linux/printk.h> 61 #include "mlx4_ib.h" 62 #include <rdma/mlx4-abi.h> 63 #include "wc.h" 64 65 #define DRV_NAME MLX4_IB_DRV_NAME 66 #ifndef DRV_VERSION 67 #define DRV_VERSION "3.5.1" 68 #endif 69 #define DRV_RELDATE "April 2019" 70 71 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF 72 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF 73 #define MLX4_IB_CARD_REV_A0 0xA0 74 75 MODULE_AUTHOR("Roland Dreier"); 76 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 77 MODULE_LICENSE("Dual BSD/GPL"); 78 79 int mlx4_ib_sm_guid_assign = 0; 80 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 81 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)"); 82 83 static const char mlx4_ib_version[] = 84 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 85 DRV_VERSION " (" DRV_RELDATE ")\n"; 86 87 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 88 89 static struct workqueue_struct *wq; 90 91 static void init_query_mad(struct ib_smp *mad) 92 { 93 mad->base_version = 1; 94 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 95 mad->class_version = 1; 96 mad->method = IB_MGMT_METHOD_GET; 97 } 98 99 static int check_flow_steering_support(struct mlx4_dev *dev) 100 { 101 int eth_num_ports = 0; 102 int ib_num_ports = 0; 103 104 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; 105 106 if (dmfs) { 107 int i; 108 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 109 eth_num_ports++; 110 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 111 ib_num_ports++; 112 dmfs &= (!ib_num_ports || 113 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && 114 (!eth_num_ports || 115 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); 116 if (ib_num_ports && mlx4_is_mfunc(dev)) { 117 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); 118 dmfs = 0; 119 } 120 } 121 return dmfs; 122 } 123 124 static int num_ib_ports(struct mlx4_dev *dev) 125 { 126 int ib_ports = 0; 127 int i; 128 129 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 130 ib_ports++; 131 132 return ib_ports; 133 } 134 135 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num) 136 { 137 struct mlx4_ib_dev *ibdev = to_mdev(device); 138 struct net_device *dev; 139 140 rcu_read_lock(); 141 dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num); 142 143 #if 0 144 if (dev) { 145 if (mlx4_is_bonded(ibdev->dev)) { 146 struct net_device *upper = NULL; 147 148 upper = netdev_master_upper_dev_get_rcu(dev); 149 if (upper) { 150 struct net_device *active; 151 152 active = bond_option_active_slave_get_rcu(netdev_priv(upper)); 153 if (active) 154 dev = active; 155 } 156 } 157 } 158 #endif 159 if (dev) 160 dev_hold(dev); 161 162 rcu_read_unlock(); 163 return dev; 164 } 165 166 static int mlx4_ib_update_gids_v1(struct gid_entry *gids, 167 struct mlx4_ib_dev *ibdev, 168 u8 port_num) 169 { 170 struct mlx4_cmd_mailbox *mailbox; 171 int err; 172 struct mlx4_dev *dev = ibdev->dev; 173 int i; 174 union ib_gid *gid_tbl; 175 176 mailbox = mlx4_alloc_cmd_mailbox(dev); 177 if (IS_ERR(mailbox)) 178 return -ENOMEM; 179 180 gid_tbl = mailbox->buf; 181 182 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 183 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid)); 184 185 err = mlx4_cmd(dev, mailbox->dma, 186 MLX4_SET_PORT_GID_TABLE << 8 | port_num, 187 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 188 MLX4_CMD_WRAPPED); 189 if (mlx4_is_bonded(dev)) 190 err += mlx4_cmd(dev, mailbox->dma, 191 MLX4_SET_PORT_GID_TABLE << 8 | 2, 192 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 193 MLX4_CMD_WRAPPED); 194 195 mlx4_free_cmd_mailbox(dev, mailbox); 196 return err; 197 } 198 199 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids, 200 struct mlx4_ib_dev *ibdev, 201 u8 port_num) 202 { 203 struct mlx4_cmd_mailbox *mailbox; 204 int err; 205 struct mlx4_dev *dev = ibdev->dev; 206 int i; 207 struct { 208 union ib_gid gid; 209 __be32 rsrvd1[2]; 210 __be16 rsrvd2; 211 u8 type; 212 u8 version; 213 __be32 rsrvd3; 214 } *gid_tbl; 215 216 mailbox = mlx4_alloc_cmd_mailbox(dev); 217 if (IS_ERR(mailbox)) 218 return -ENOMEM; 219 220 gid_tbl = mailbox->buf; 221 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 222 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid)); 223 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { 224 gid_tbl[i].version = 2; 225 if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid)) 226 gid_tbl[i].type = 1; 227 else 228 memset(&gid_tbl[i].gid, 0, 12); 229 } 230 } 231 232 err = mlx4_cmd(dev, mailbox->dma, 233 MLX4_SET_PORT_ROCE_ADDR << 8 | port_num, 234 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 235 MLX4_CMD_WRAPPED); 236 if (mlx4_is_bonded(dev)) 237 err += mlx4_cmd(dev, mailbox->dma, 238 MLX4_SET_PORT_ROCE_ADDR << 8 | 2, 239 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 240 MLX4_CMD_WRAPPED); 241 242 mlx4_free_cmd_mailbox(dev, mailbox); 243 return err; 244 } 245 246 static int mlx4_ib_update_gids(struct gid_entry *gids, 247 struct mlx4_ib_dev *ibdev, 248 u8 port_num) 249 { 250 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 251 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num); 252 253 return mlx4_ib_update_gids_v1(gids, ibdev, port_num); 254 } 255 256 static int mlx4_ib_add_gid(struct ib_device *device, 257 u8 port_num, 258 unsigned int index, 259 const union ib_gid *gid, 260 const struct ib_gid_attr *attr, 261 void **context) 262 { 263 struct mlx4_ib_dev *ibdev = to_mdev(device); 264 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 265 struct mlx4_port_gid_table *port_gid_table; 266 int free = -1, found = -1; 267 int ret = 0; 268 int hw_update = 0; 269 int i; 270 struct gid_entry *gids = NULL; 271 272 if (!rdma_cap_roce_gid_table(device, port_num)) 273 return -EINVAL; 274 275 if (port_num > MLX4_MAX_PORTS) 276 return -EINVAL; 277 278 if (!context) 279 return -EINVAL; 280 281 port_gid_table = &iboe->gids[port_num - 1]; 282 spin_lock_bh(&iboe->lock); 283 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) { 284 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) && 285 (port_gid_table->gids[i].gid_type == attr->gid_type)) { 286 found = i; 287 break; 288 } 289 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid))) 290 free = i; /* HW has space */ 291 } 292 293 if (found < 0) { 294 if (free < 0) { 295 ret = -ENOSPC; 296 } else { 297 port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC); 298 if (!port_gid_table->gids[free].ctx) { 299 ret = -ENOMEM; 300 } else { 301 *context = port_gid_table->gids[free].ctx; 302 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid)); 303 port_gid_table->gids[free].gid_type = attr->gid_type; 304 port_gid_table->gids[free].ctx->real_index = free; 305 port_gid_table->gids[free].ctx->refcount = 1; 306 hw_update = 1; 307 } 308 } 309 } else { 310 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx; 311 *context = ctx; 312 ctx->refcount++; 313 } 314 if (!ret && hw_update) { 315 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC); 316 if (!gids) { 317 ret = -ENOMEM; 318 } else { 319 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) { 320 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid)); 321 gids[i].gid_type = port_gid_table->gids[i].gid_type; 322 } 323 } 324 } 325 spin_unlock_bh(&iboe->lock); 326 327 if (!ret && hw_update) { 328 ret = mlx4_ib_update_gids(gids, ibdev, port_num); 329 kfree(gids); 330 } 331 332 return ret; 333 } 334 335 static int mlx4_ib_del_gid(struct ib_device *device, 336 u8 port_num, 337 unsigned int index, 338 void **context) 339 { 340 struct gid_cache_context *ctx = *context; 341 struct mlx4_ib_dev *ibdev = to_mdev(device); 342 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 343 struct mlx4_port_gid_table *port_gid_table; 344 int ret = 0; 345 int hw_update = 0; 346 struct gid_entry *gids = NULL; 347 348 if (!rdma_cap_roce_gid_table(device, port_num)) 349 return -EINVAL; 350 351 if (port_num > MLX4_MAX_PORTS) 352 return -EINVAL; 353 354 port_gid_table = &iboe->gids[port_num - 1]; 355 spin_lock_bh(&iboe->lock); 356 if (ctx) { 357 ctx->refcount--; 358 if (!ctx->refcount) { 359 unsigned int real_index = ctx->real_index; 360 361 memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid)); 362 kfree(port_gid_table->gids[real_index].ctx); 363 port_gid_table->gids[real_index].ctx = NULL; 364 hw_update = 1; 365 } 366 } 367 if (!ret && hw_update) { 368 int i; 369 370 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC); 371 if (!gids) { 372 ret = -ENOMEM; 373 } else { 374 for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) 375 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid)); 376 } 377 } 378 spin_unlock_bh(&iboe->lock); 379 380 if (!ret && hw_update) { 381 ret = mlx4_ib_update_gids(gids, ibdev, port_num); 382 kfree(gids); 383 } 384 return ret; 385 } 386 387 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev, 388 u8 port_num, int index) 389 { 390 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 391 struct gid_cache_context *ctx = NULL; 392 union ib_gid gid; 393 struct mlx4_port_gid_table *port_gid_table; 394 int real_index = -EINVAL; 395 int i; 396 int ret; 397 unsigned long flags; 398 struct ib_gid_attr attr; 399 400 if (port_num > MLX4_MAX_PORTS) 401 return -EINVAL; 402 403 if (mlx4_is_bonded(ibdev->dev)) 404 port_num = 1; 405 406 if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num)) 407 return index; 408 409 ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr); 410 if (ret) 411 return ret; 412 413 if (attr.ndev) 414 dev_put(attr.ndev); 415 416 if (!memcmp(&gid, &zgid, sizeof(gid))) 417 return -EINVAL; 418 419 spin_lock_irqsave(&iboe->lock, flags); 420 port_gid_table = &iboe->gids[port_num - 1]; 421 422 for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) 423 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) && 424 attr.gid_type == port_gid_table->gids[i].gid_type) { 425 ctx = port_gid_table->gids[i].ctx; 426 break; 427 } 428 if (ctx) 429 real_index = ctx->real_index; 430 spin_unlock_irqrestore(&iboe->lock, flags); 431 return real_index; 432 } 433 434 static int mlx4_ib_query_device(struct ib_device *ibdev, 435 struct ib_device_attr *props, 436 struct ib_udata *uhw) 437 { 438 struct mlx4_ib_dev *dev = to_mdev(ibdev); 439 struct ib_smp *in_mad = NULL; 440 struct ib_smp *out_mad = NULL; 441 int err = -ENOMEM; 442 int have_ib_ports; 443 struct mlx4_uverbs_ex_query_device cmd; 444 struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0}; 445 struct mlx4_clock_params clock_params; 446 447 if (uhw->inlen) { 448 if (uhw->inlen < sizeof(cmd)) 449 return -EINVAL; 450 451 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd)); 452 if (err) 453 return err; 454 455 if (cmd.comp_mask) 456 return -EINVAL; 457 458 if (cmd.reserved) 459 return -EINVAL; 460 } 461 462 resp.response_length = offsetof(typeof(resp), response_length) + 463 sizeof(resp.response_length); 464 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 465 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 466 if (!in_mad || !out_mad) 467 goto out; 468 469 init_query_mad(in_mad); 470 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 471 472 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 473 1, NULL, NULL, in_mad, out_mad); 474 if (err) 475 goto out; 476 477 memset(props, 0, sizeof *props); 478 479 have_ib_ports = num_ib_ports(dev->dev); 480 481 props->fw_ver = dev->dev->caps.fw_ver; 482 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 483 IB_DEVICE_PORT_ACTIVE_EVENT | 484 IB_DEVICE_SYS_IMAGE_GUID | 485 IB_DEVICE_RC_RNR_NAK_GEN | 486 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 487 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 488 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 489 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 490 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 491 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports) 492 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 493 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 494 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 495 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 496 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 497 if (dev->dev->caps.max_gso_sz && 498 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) && 499 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)) 500 props->device_cap_flags |= IB_DEVICE_UD_TSO; 501 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 502 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 503 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 504 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 505 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 506 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 507 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 508 props->device_cap_flags |= IB_DEVICE_XRC; 509 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) 510 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; 511 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 512 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) 513 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 514 else 515 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; 516 } 517 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 518 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 519 520 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; 521 522 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 523 0xffffff; 524 props->vendor_part_id = dev->dev->persist->pdev->device; 525 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 526 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 527 528 props->max_mr_size = ~0ull; 529 props->page_size_cap = dev->dev->caps.page_size_cap; 530 props->max_qp = dev->dev->quotas.qp; 531 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 532 props->max_sge = min(dev->dev->caps.max_sq_sg, 533 dev->dev->caps.max_rq_sg); 534 props->max_sge_rd = MLX4_MAX_SGE_RD; 535 props->max_cq = dev->dev->quotas.cq; 536 props->max_cqe = dev->dev->caps.max_cqes; 537 props->max_mr = dev->dev->quotas.mpt; 538 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 539 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 540 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 541 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 542 props->max_srq = dev->dev->quotas.srq; 543 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 544 props->max_srq_sge = dev->dev->caps.max_srq_sge; 545 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 546 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 547 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 548 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 549 props->masked_atomic_cap = props->atomic_cap; 550 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 551 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 552 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 553 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 554 props->max_mcast_grp; 555 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 556 props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL; 557 props->timestamp_mask = 0xFFFFFFFFFFFFULL; 558 559 if (!mlx4_is_slave(dev->dev)) 560 err = mlx4_get_internal_clock_params(dev->dev, &clock_params); 561 562 if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) { 563 resp.response_length += sizeof(resp.hca_core_clock_offset); 564 if (!err && !mlx4_is_slave(dev->dev)) { 565 resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP; 566 resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE; 567 } 568 } 569 570 if (uhw->outlen) { 571 err = ib_copy_to_udata(uhw, &resp, resp.response_length); 572 if (err) 573 goto out; 574 } 575 out: 576 kfree(in_mad); 577 kfree(out_mad); 578 579 return err; 580 } 581 582 static enum rdma_link_layer 583 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 584 { 585 struct mlx4_dev *dev = to_mdev(device)->dev; 586 587 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 588 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 589 } 590 591 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 592 struct ib_port_attr *props, int netw_view) 593 { 594 struct ib_smp *in_mad = NULL; 595 struct ib_smp *out_mad = NULL; 596 int ext_active_speed; 597 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 598 int err = -ENOMEM; 599 600 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 601 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 602 if (!in_mad || !out_mad) 603 goto out; 604 605 init_query_mad(in_mad); 606 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 607 in_mad->attr_mod = cpu_to_be32(port); 608 609 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 610 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 611 612 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 613 in_mad, out_mad); 614 if (err) 615 goto out; 616 617 618 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 619 props->lmc = out_mad->data[34] & 0x7; 620 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 621 props->sm_sl = out_mad->data[36] & 0xf; 622 props->state = out_mad->data[32] & 0xf; 623 props->phys_state = out_mad->data[33] >> 4; 624 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 625 if (netw_view) 626 props->gid_tbl_len = out_mad->data[50]; 627 else 628 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 629 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 630 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 631 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 632 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 633 props->active_width = out_mad->data[31] & 0xf; 634 props->active_speed = out_mad->data[35] >> 4; 635 props->max_mtu = out_mad->data[41] & 0xf; 636 props->active_mtu = out_mad->data[36] >> 4; 637 props->subnet_timeout = out_mad->data[51] & 0x1f; 638 props->max_vl_num = out_mad->data[37] >> 4; 639 props->init_type_reply = out_mad->data[41] >> 4; 640 641 /* Check if extended speeds (EDR/FDR/...) are supported */ 642 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 643 ext_active_speed = out_mad->data[62] >> 4; 644 645 switch (ext_active_speed) { 646 case 1: 647 props->active_speed = IB_SPEED_FDR; 648 break; 649 case 2: 650 props->active_speed = IB_SPEED_EDR; 651 break; 652 } 653 } 654 655 /* If reported active speed is QDR, check if is FDR-10 */ 656 if (props->active_speed == IB_SPEED_QDR) { 657 init_query_mad(in_mad); 658 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 659 in_mad->attr_mod = cpu_to_be32(port); 660 661 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 662 NULL, NULL, in_mad, out_mad); 663 if (err) 664 goto out; 665 666 /* Checking LinkSpeedActive for FDR-10 */ 667 if (out_mad->data[15] & 0x1) 668 props->active_speed = IB_SPEED_FDR10; 669 } 670 671 /* Avoid wrong speed value returned by FW if the IB link is down. */ 672 if (props->state == IB_PORT_DOWN) 673 props->active_speed = IB_SPEED_SDR; 674 675 out: 676 kfree(in_mad); 677 kfree(out_mad); 678 return err; 679 } 680 681 static u8 state_to_phys_state(enum ib_port_state state) 682 { 683 return state == IB_PORT_ACTIVE ? 5 : 3; 684 } 685 686 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 687 struct ib_port_attr *props, int netw_view) 688 { 689 690 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 691 struct mlx4_ib_iboe *iboe = &mdev->iboe; 692 struct net_device *ndev; 693 enum ib_mtu tmp; 694 struct mlx4_cmd_mailbox *mailbox; 695 int err = 0; 696 int is_bonded = mlx4_is_bonded(mdev->dev); 697 698 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 699 if (IS_ERR(mailbox)) 700 return PTR_ERR(mailbox); 701 702 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 703 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 704 MLX4_CMD_WRAPPED); 705 if (err) 706 goto out; 707 708 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? 709 IB_WIDTH_4X : IB_WIDTH_1X; 710 props->active_speed = IB_SPEED_QDR; 711 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS; 712 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 713 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 714 props->pkey_tbl_len = 1; 715 props->max_mtu = IB_MTU_4096; 716 props->max_vl_num = 2; 717 props->state = IB_PORT_DOWN; 718 props->phys_state = state_to_phys_state(props->state); 719 props->active_mtu = IB_MTU_256; 720 spin_lock_bh(&iboe->lock); 721 ndev = iboe->netdevs[port - 1]; 722 if (ndev && is_bonded) { 723 #if 0 724 rcu_read_lock(); /* required to get upper dev */ 725 ndev = netdev_master_upper_dev_get_rcu(ndev); 726 rcu_read_unlock(); 727 #endif 728 } 729 if (!ndev) 730 goto out_unlock; 731 732 tmp = iboe_get_mtu(ndev->if_mtu); 733 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 734 735 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 736 IB_PORT_ACTIVE : IB_PORT_DOWN; 737 props->phys_state = state_to_phys_state(props->state); 738 out_unlock: 739 spin_unlock_bh(&iboe->lock); 740 out: 741 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 742 return err; 743 } 744 745 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 746 struct ib_port_attr *props, int netw_view) 747 { 748 int err; 749 750 memset(props, 0, sizeof *props); 751 752 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 753 ib_link_query_port(ibdev, port, props, netw_view) : 754 eth_link_query_port(ibdev, port, props, netw_view); 755 756 return err; 757 } 758 759 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 760 struct ib_port_attr *props) 761 { 762 /* returns host view */ 763 return __mlx4_ib_query_port(ibdev, port, props, 0); 764 } 765 766 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 767 union ib_gid *gid, int netw_view) 768 { 769 struct ib_smp *in_mad = NULL; 770 struct ib_smp *out_mad = NULL; 771 int err = -ENOMEM; 772 struct mlx4_ib_dev *dev = to_mdev(ibdev); 773 int clear = 0; 774 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 775 776 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 777 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 778 if (!in_mad || !out_mad) 779 goto out; 780 781 init_query_mad(in_mad); 782 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 783 in_mad->attr_mod = cpu_to_be32(port); 784 785 if (mlx4_is_mfunc(dev->dev) && netw_view) 786 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 787 788 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 789 if (err) 790 goto out; 791 792 memcpy(gid->raw, out_mad->data + 8, 8); 793 794 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 795 if (index) { 796 /* For any index > 0, return the null guid */ 797 err = 0; 798 clear = 1; 799 goto out; 800 } 801 } 802 803 init_query_mad(in_mad); 804 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 805 in_mad->attr_mod = cpu_to_be32(index / 8); 806 807 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 808 NULL, NULL, in_mad, out_mad); 809 if (err) 810 goto out; 811 812 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 813 814 out: 815 if (clear) 816 memset(gid->raw + 8, 0, 8); 817 kfree(in_mad); 818 kfree(out_mad); 819 return err; 820 } 821 822 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 823 union ib_gid *gid) 824 { 825 int ret; 826 827 if (rdma_protocol_ib(ibdev, port)) 828 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 829 830 if (!rdma_protocol_roce(ibdev, port)) 831 return -ENODEV; 832 833 if (!rdma_cap_roce_gid_table(ibdev, port)) 834 return -ENODEV; 835 836 ret = ib_get_cached_gid(ibdev, port, index, gid, NULL); 837 if (ret == -EAGAIN) { 838 memcpy(gid, &zgid, sizeof(*gid)); 839 return 0; 840 } 841 842 return ret; 843 } 844 845 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl) 846 { 847 union sl2vl_tbl_to_u64 sl2vl64; 848 struct ib_smp *in_mad = NULL; 849 struct ib_smp *out_mad = NULL; 850 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 851 int err = -ENOMEM; 852 int jj; 853 854 if (mlx4_is_slave(to_mdev(ibdev)->dev)) { 855 *sl2vl_tbl = 0; 856 return 0; 857 } 858 859 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); 860 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); 861 if (!in_mad || !out_mad) 862 goto out; 863 864 init_query_mad(in_mad); 865 in_mad->attr_id = IB_SMP_ATTR_SL_TO_VL_TABLE; 866 in_mad->attr_mod = 0; 867 868 if (mlx4_is_mfunc(to_mdev(ibdev)->dev)) 869 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 870 871 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 872 in_mad, out_mad); 873 if (err) 874 goto out; 875 876 for (jj = 0; jj < 8; jj++) 877 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj]; 878 *sl2vl_tbl = sl2vl64.sl64; 879 880 out: 881 kfree(in_mad); 882 kfree(out_mad); 883 return err; 884 } 885 886 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev) 887 { 888 u64 sl2vl; 889 int i; 890 int err; 891 892 for (i = 1; i <= mdev->dev->caps.num_ports; i++) { 893 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH) 894 continue; 895 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl); 896 if (err) { 897 pr_err("Unable to get default sl to vl mapping for port %d. Using all zeroes (%d)\n", 898 i, err); 899 sl2vl = 0; 900 } 901 atomic64_set(&mdev->sl2vl[i - 1], sl2vl); 902 } 903 } 904 905 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 906 u16 *pkey, int netw_view) 907 { 908 struct ib_smp *in_mad = NULL; 909 struct ib_smp *out_mad = NULL; 910 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 911 int err = -ENOMEM; 912 913 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 914 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 915 if (!in_mad || !out_mad) 916 goto out; 917 918 init_query_mad(in_mad); 919 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 920 in_mad->attr_mod = cpu_to_be32(index / 32); 921 922 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 923 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 924 925 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 926 in_mad, out_mad); 927 if (err) 928 goto out; 929 930 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 931 932 out: 933 kfree(in_mad); 934 kfree(out_mad); 935 return err; 936 } 937 938 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 939 { 940 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 941 } 942 943 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 944 struct ib_device_modify *props) 945 { 946 struct mlx4_cmd_mailbox *mailbox; 947 unsigned long flags; 948 949 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 950 return -EOPNOTSUPP; 951 952 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 953 return 0; 954 955 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 956 return -EOPNOTSUPP; 957 958 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 959 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 960 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 961 962 /* 963 * If possible, pass node desc to FW, so it can generate 964 * a 144 trap. If cmd fails, just ignore. 965 */ 966 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 967 if (IS_ERR(mailbox)) 968 return 0; 969 970 memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 971 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 972 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 973 974 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 975 976 return 0; 977 } 978 979 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 980 u32 cap_mask) 981 { 982 struct mlx4_cmd_mailbox *mailbox; 983 int err; 984 985 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 986 if (IS_ERR(mailbox)) 987 return PTR_ERR(mailbox); 988 989 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 990 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 991 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 992 } else { 993 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 994 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 995 } 996 997 err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE, 998 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 999 MLX4_CMD_WRAPPED); 1000 1001 mlx4_free_cmd_mailbox(dev->dev, mailbox); 1002 return err; 1003 } 1004 1005 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 1006 struct ib_port_modify *props) 1007 { 1008 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 1009 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 1010 struct ib_port_attr attr; 1011 u32 cap_mask; 1012 int err; 1013 1014 /* return OK if this is RoCE. CM calls ib_modify_port() regardless 1015 * of whether port link layer is ETH or IB. For ETH ports, qkey 1016 * violations and port capabilities are not meaningful. 1017 */ 1018 if (is_eth) 1019 return 0; 1020 1021 mutex_lock(&mdev->cap_mask_mutex); 1022 1023 err = mlx4_ib_query_port(ibdev, port, &attr); 1024 if (err) 1025 goto out; 1026 1027 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 1028 ~props->clr_port_cap_mask; 1029 1030 err = mlx4_ib_SET_PORT(mdev, port, 1031 !!(mask & IB_PORT_RESET_QKEY_CNTR), 1032 cap_mask); 1033 1034 out: 1035 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 1036 return err; 1037 } 1038 1039 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 1040 struct ib_udata *udata) 1041 { 1042 struct mlx4_ib_dev *dev = to_mdev(ibdev); 1043 struct mlx4_ib_ucontext *context; 1044 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 1045 struct mlx4_ib_alloc_ucontext_resp resp; 1046 int err; 1047 1048 if (!dev->ib_active) 1049 return ERR_PTR(-EAGAIN); 1050 1051 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 1052 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 1053 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 1054 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1055 } else { 1056 resp.dev_caps = dev->dev->caps.userspace_caps; 1057 resp.qp_tab_size = dev->dev->caps.num_qps; 1058 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 1059 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 1060 resp.cqe_size = dev->dev->caps.cqe_size; 1061 } 1062 1063 context = kzalloc(sizeof(*context), GFP_KERNEL); 1064 if (!context) 1065 return ERR_PTR(-ENOMEM); 1066 1067 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 1068 if (err) { 1069 kfree(context); 1070 return ERR_PTR(err); 1071 } 1072 1073 INIT_LIST_HEAD(&context->db_page_list); 1074 mutex_init(&context->db_page_mutex); 1075 1076 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 1077 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 1078 else 1079 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 1080 1081 if (err) { 1082 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 1083 kfree(context); 1084 return ERR_PTR(-EFAULT); 1085 } 1086 1087 return &context->ibucontext; 1088 } 1089 1090 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 1091 { 1092 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 1093 1094 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 1095 kfree(context); 1096 1097 return 0; 1098 } 1099 1100 static void mlx4_ib_vma_open(struct vm_area_struct *area) 1101 { 1102 /* vma_open is called when a new VMA is created on top of our VMA. 1103 * This is done through either mremap flow or split_vma (usually due 1104 * to mlock, madvise, munmap, etc.). We do not support a clone of the 1105 * vma, as this VMA is strongly hardware related. Therefore we set the 1106 * vm_ops of the newly created/cloned VMA to NULL, to prevent it from 1107 * calling us again and trying to do incorrect actions. We assume that 1108 * the original vma size is exactly a single page that there will be no 1109 * "splitting" operations on. 1110 */ 1111 area->vm_ops = NULL; 1112 } 1113 1114 static void mlx4_ib_vma_close(struct vm_area_struct *area) 1115 { 1116 struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data; 1117 1118 /* It's guaranteed that all VMAs opened on a FD are closed before the 1119 * file itself is closed, therefore no sync is needed with the regular 1120 * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync 1121 * with accessing the vma as part of mlx4_ib_disassociate_ucontext. 1122 * The close operation is usually called under mm->mmap_sem except when 1123 * process is exiting. The exiting case is handled explicitly as part 1124 * of mlx4_ib_disassociate_ucontext. 1125 */ 1126 mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *) 1127 area->vm_private_data; 1128 1129 /* set the vma context pointer to null in the mlx4_ib driver's private 1130 * data to protect against a race condition in mlx4_ib_dissassociate_ucontext(). 1131 */ 1132 mlx4_ib_vma_priv_data->vma = NULL; 1133 } 1134 1135 static const struct vm_operations_struct mlx4_ib_vm_ops = { 1136 .open = mlx4_ib_vma_open, 1137 .close = mlx4_ib_vma_close 1138 }; 1139 1140 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma, 1141 struct mlx4_ib_vma_private_data *vma_private_data) 1142 { 1143 vma_private_data->vma = vma; 1144 vma->vm_private_data = vma_private_data; 1145 vma->vm_ops = &mlx4_ib_vm_ops; 1146 } 1147 1148 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 1149 { 1150 struct mlx4_ib_dev *dev = to_mdev(context->device); 1151 struct mlx4_ib_ucontext *mucontext = to_mucontext(context); 1152 1153 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 1154 return -EINVAL; 1155 1156 if (vma->vm_pgoff == 0) { 1157 /* We prevent double mmaping on same context */ 1158 if (mucontext->hw_bar_info[HW_BAR_DB].vma) 1159 return -EINVAL; 1160 1161 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 1162 1163 if (io_remap_pfn_range(vma, vma->vm_start, 1164 to_mucontext(context)->uar.pfn, 1165 PAGE_SIZE, vma->vm_page_prot)) 1166 return -EAGAIN; 1167 1168 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]); 1169 1170 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 1171 /* We prevent double mmaping on same context */ 1172 if (mucontext->hw_bar_info[HW_BAR_BF].vma) 1173 return -EINVAL; 1174 1175 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 1176 1177 if (io_remap_pfn_range(vma, vma->vm_start, 1178 to_mucontext(context)->uar.pfn + 1179 dev->dev->caps.num_uars, 1180 PAGE_SIZE, vma->vm_page_prot)) 1181 return -EAGAIN; 1182 1183 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]); 1184 1185 } else if (vma->vm_pgoff == 3) { 1186 struct mlx4_clock_params params; 1187 int ret; 1188 1189 /* We prevent double mmaping on same context */ 1190 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma) 1191 return -EINVAL; 1192 1193 ret = mlx4_get_internal_clock_params(dev->dev, ¶ms); 1194 1195 if (ret) 1196 return ret; 1197 1198 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 1199 if (io_remap_pfn_range(vma, vma->vm_start, 1200 (pci_resource_start(dev->dev->persist->pdev, 1201 params.bar) + 1202 params.offset) 1203 >> PAGE_SHIFT, 1204 PAGE_SIZE, vma->vm_page_prot)) 1205 return -EAGAIN; 1206 1207 mlx4_ib_set_vma_data(vma, 1208 &mucontext->hw_bar_info[HW_BAR_CLOCK]); 1209 } else { 1210 return -EINVAL; 1211 } 1212 1213 return 0; 1214 } 1215 1216 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 1217 struct ib_ucontext *context, 1218 struct ib_udata *udata) 1219 { 1220 struct mlx4_ib_pd *pd; 1221 int err; 1222 1223 pd = kmalloc(sizeof *pd, GFP_KERNEL); 1224 if (!pd) 1225 return ERR_PTR(-ENOMEM); 1226 1227 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 1228 if (err) { 1229 kfree(pd); 1230 return ERR_PTR(err); 1231 } 1232 1233 if (context) 1234 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 1235 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 1236 kfree(pd); 1237 return ERR_PTR(-EFAULT); 1238 } 1239 1240 return &pd->ibpd; 1241 } 1242 1243 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 1244 { 1245 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 1246 kfree(pd); 1247 1248 return 0; 1249 } 1250 1251 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 1252 struct ib_ucontext *context, 1253 struct ib_udata *udata) 1254 { 1255 struct mlx4_ib_xrcd *xrcd; 1256 struct ib_cq_init_attr cq_attr = {}; 1257 int err; 1258 1259 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 1260 return ERR_PTR(-ENOSYS); 1261 1262 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 1263 if (!xrcd) 1264 return ERR_PTR(-ENOMEM); 1265 1266 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 1267 if (err) 1268 goto err1; 1269 1270 xrcd->pd = ib_alloc_pd(ibdev, 0); 1271 if (IS_ERR(xrcd->pd)) { 1272 err = PTR_ERR(xrcd->pd); 1273 goto err2; 1274 } 1275 1276 cq_attr.cqe = 1; 1277 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr); 1278 if (IS_ERR(xrcd->cq)) { 1279 err = PTR_ERR(xrcd->cq); 1280 goto err3; 1281 } 1282 1283 return &xrcd->ibxrcd; 1284 1285 err3: 1286 ib_dealloc_pd(xrcd->pd); 1287 err2: 1288 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 1289 err1: 1290 kfree(xrcd); 1291 return ERR_PTR(err); 1292 } 1293 1294 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 1295 { 1296 ib_destroy_cq(to_mxrcd(xrcd)->cq); 1297 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 1298 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 1299 kfree(xrcd); 1300 1301 return 0; 1302 } 1303 1304 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 1305 { 1306 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1307 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1308 struct mlx4_ib_gid_entry *ge; 1309 1310 ge = kzalloc(sizeof *ge, GFP_KERNEL); 1311 if (!ge) 1312 return -ENOMEM; 1313 1314 ge->gid = *gid; 1315 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 1316 ge->port = mqp->port; 1317 ge->added = 1; 1318 } 1319 1320 mutex_lock(&mqp->mutex); 1321 list_add_tail(&ge->list, &mqp->gid_list); 1322 mutex_unlock(&mqp->mutex); 1323 1324 return 0; 1325 } 1326 1327 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev, 1328 struct mlx4_ib_counters *ctr_table) 1329 { 1330 struct counter_index *counter, *tmp_count; 1331 1332 mutex_lock(&ctr_table->mutex); 1333 list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list, 1334 list) { 1335 if (counter->allocated) 1336 mlx4_counter_free(ibdev->dev, counter->index); 1337 list_del(&counter->list); 1338 kfree(counter); 1339 } 1340 mutex_unlock(&ctr_table->mutex); 1341 } 1342 1343 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 1344 union ib_gid *gid) 1345 { 1346 struct net_device *ndev; 1347 int ret = 0; 1348 1349 if (!mqp->port) 1350 return 0; 1351 1352 spin_lock_bh(&mdev->iboe.lock); 1353 ndev = mdev->iboe.netdevs[mqp->port - 1]; 1354 if (ndev) 1355 dev_hold(ndev); 1356 spin_unlock_bh(&mdev->iboe.lock); 1357 1358 if (ndev) { 1359 ret = 1; 1360 dev_put(ndev); 1361 } 1362 1363 return ret; 1364 } 1365 1366 struct mlx4_ib_steering { 1367 struct list_head list; 1368 struct mlx4_flow_reg_id reg_id; 1369 union ib_gid gid; 1370 }; 1371 1372 #define LAST_ETH_FIELD vlan_tag 1373 #define LAST_IB_FIELD sl 1374 #define LAST_IPV4_FIELD dst_ip 1375 #define LAST_TCP_UDP_FIELD src_port 1376 1377 /* Field is the last supported field */ 1378 #define FIELDS_NOT_SUPPORTED(filter, field)\ 1379 memchr_inv((void *)&filter.field +\ 1380 sizeof(filter.field), 0,\ 1381 sizeof(filter) -\ 1382 offsetof(typeof(filter), field) -\ 1383 sizeof(filter.field)) 1384 1385 static int parse_flow_attr(struct mlx4_dev *dev, 1386 u32 qp_num, 1387 union ib_flow_spec *ib_spec, 1388 struct _rule_hw *mlx4_spec) 1389 { 1390 enum mlx4_net_trans_rule_id type; 1391 1392 switch (ib_spec->type) { 1393 case IB_FLOW_SPEC_ETH: 1394 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) 1395 return -ENOTSUPP; 1396 1397 type = MLX4_NET_TRANS_RULE_ID_ETH; 1398 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 1399 ETH_ALEN); 1400 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 1401 ETH_ALEN); 1402 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 1403 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 1404 break; 1405 case IB_FLOW_SPEC_IB: 1406 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD)) 1407 return -ENOTSUPP; 1408 1409 type = MLX4_NET_TRANS_RULE_ID_IB; 1410 mlx4_spec->ib.l3_qpn = 1411 cpu_to_be32(qp_num); 1412 mlx4_spec->ib.qpn_mask = 1413 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 1414 break; 1415 1416 1417 case IB_FLOW_SPEC_IPV4: 1418 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) 1419 return -ENOTSUPP; 1420 1421 type = MLX4_NET_TRANS_RULE_ID_IPV4; 1422 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 1423 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 1424 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 1425 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 1426 break; 1427 1428 case IB_FLOW_SPEC_TCP: 1429 case IB_FLOW_SPEC_UDP: 1430 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) 1431 return -ENOTSUPP; 1432 1433 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 1434 MLX4_NET_TRANS_RULE_ID_TCP : 1435 MLX4_NET_TRANS_RULE_ID_UDP; 1436 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 1437 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 1438 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 1439 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 1440 break; 1441 1442 default: 1443 return -EINVAL; 1444 } 1445 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 1446 mlx4_hw_rule_sz(dev, type) < 0) 1447 return -EINVAL; 1448 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 1449 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 1450 return mlx4_hw_rule_sz(dev, type); 1451 } 1452 1453 struct default_rules { 1454 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1455 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1456 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1457 __u8 link_layer; 1458 }; 1459 static const struct default_rules default_table[] = { 1460 { 1461 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 1462 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 1463 .rules_create_list = {IB_FLOW_SPEC_IB}, 1464 .link_layer = IB_LINK_LAYER_INFINIBAND 1465 } 1466 }; 1467 1468 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 1469 struct ib_flow_attr *flow_attr) 1470 { 1471 int i, j, k; 1472 void *ib_flow; 1473 const struct default_rules *pdefault_rules = default_table; 1474 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 1475 1476 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 1477 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 1478 memset(&field_types, 0, sizeof(field_types)); 1479 1480 if (link_layer != pdefault_rules->link_layer) 1481 continue; 1482 1483 ib_flow = flow_attr + 1; 1484 /* we assume the specs are sorted */ 1485 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 1486 j < flow_attr->num_of_specs; k++) { 1487 union ib_flow_spec *current_flow = 1488 (union ib_flow_spec *)ib_flow; 1489 1490 /* same layer but different type */ 1491 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 1492 (pdefault_rules->mandatory_fields[k] & 1493 IB_FLOW_SPEC_LAYER_MASK)) && 1494 (current_flow->type != 1495 pdefault_rules->mandatory_fields[k])) 1496 goto out; 1497 1498 /* same layer, try match next one */ 1499 if (current_flow->type == 1500 pdefault_rules->mandatory_fields[k]) { 1501 j++; 1502 ib_flow += 1503 ((union ib_flow_spec *)ib_flow)->size; 1504 } 1505 } 1506 1507 ib_flow = flow_attr + 1; 1508 for (j = 0; j < flow_attr->num_of_specs; 1509 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 1510 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 1511 /* same layer and same type */ 1512 if (((union ib_flow_spec *)ib_flow)->type == 1513 pdefault_rules->mandatory_not_fields[k]) 1514 goto out; 1515 1516 return i; 1517 } 1518 out: 1519 return -1; 1520 } 1521 1522 static int __mlx4_ib_create_default_rules( 1523 struct mlx4_ib_dev *mdev, 1524 struct ib_qp *qp, 1525 const struct default_rules *pdefault_rules, 1526 struct _rule_hw *mlx4_spec) { 1527 int size = 0; 1528 int i; 1529 1530 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 1531 int ret; 1532 union ib_flow_spec ib_spec; 1533 switch (pdefault_rules->rules_create_list[i]) { 1534 case 0: 1535 /* no rule */ 1536 continue; 1537 case IB_FLOW_SPEC_IB: 1538 ib_spec.type = IB_FLOW_SPEC_IB; 1539 ib_spec.size = sizeof(struct ib_flow_spec_ib); 1540 1541 break; 1542 default: 1543 /* invalid rule */ 1544 return -EINVAL; 1545 } 1546 /* We must put empty rule, qpn is being ignored */ 1547 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1548 mlx4_spec); 1549 if (ret < 0) { 1550 pr_info("invalid parsing\n"); 1551 return -EINVAL; 1552 } 1553 1554 mlx4_spec = (void *)mlx4_spec + ret; 1555 size += ret; 1556 } 1557 return size; 1558 } 1559 1560 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1561 int domain, 1562 enum mlx4_net_trans_promisc_mode flow_type, 1563 u64 *reg_id) 1564 { 1565 int ret, i; 1566 int size = 0; 1567 void *ib_flow; 1568 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1569 struct mlx4_cmd_mailbox *mailbox; 1570 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1571 int default_flow; 1572 1573 static const u16 __mlx4_domain[] = { 1574 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 1575 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 1576 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 1577 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 1578 }; 1579 1580 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1581 pr_err("Invalid priority value %d\n", flow_attr->priority); 1582 return -EINVAL; 1583 } 1584 1585 if (domain >= IB_FLOW_DOMAIN_NUM) { 1586 pr_err("Invalid domain value %d\n", domain); 1587 return -EINVAL; 1588 } 1589 1590 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1591 return -EINVAL; 1592 1593 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1594 if (IS_ERR(mailbox)) 1595 return PTR_ERR(mailbox); 1596 ctrl = mailbox->buf; 1597 1598 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 1599 flow_attr->priority); 1600 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1601 ctrl->port = flow_attr->port; 1602 ctrl->qpn = cpu_to_be32(qp->qp_num); 1603 1604 ib_flow = flow_attr + 1; 1605 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1606 /* Add default flows */ 1607 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1608 if (default_flow >= 0) { 1609 ret = __mlx4_ib_create_default_rules( 1610 mdev, qp, default_table + default_flow, 1611 mailbox->buf + size); 1612 if (ret < 0) { 1613 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1614 return -EINVAL; 1615 } 1616 size += ret; 1617 } 1618 for (i = 0; i < flow_attr->num_of_specs; i++) { 1619 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1620 mailbox->buf + size); 1621 if (ret < 0) { 1622 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1623 return -EINVAL; 1624 } 1625 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1626 size += ret; 1627 } 1628 1629 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1630 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1631 MLX4_CMD_WRAPPED); 1632 if (ret == -ENOMEM) 1633 pr_err("mcg table is full. Fail to register network rule.\n"); 1634 else if (ret == -ENXIO) 1635 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1636 else if (ret) 1637 pr_err("Invalid argument. Fail to register network rule.\n"); 1638 1639 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1640 return ret; 1641 } 1642 1643 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1644 { 1645 int err; 1646 err = mlx4_cmd(dev, reg_id, 0, 0, 1647 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1648 MLX4_CMD_WRAPPED); 1649 if (err) 1650 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1651 (long long)reg_id); 1652 return err; 1653 } 1654 1655 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1656 u64 *reg_id) 1657 { 1658 void *ib_flow; 1659 union ib_flow_spec *ib_spec; 1660 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1661 int err = 0; 1662 1663 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 1664 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 1665 return 0; /* do nothing */ 1666 1667 ib_flow = flow_attr + 1; 1668 ib_spec = (union ib_flow_spec *)ib_flow; 1669 1670 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1671 return 0; /* do nothing */ 1672 1673 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1674 flow_attr->port, qp->qp_num, 1675 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1676 reg_id); 1677 return err; 1678 } 1679 1680 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev, 1681 struct ib_flow_attr *flow_attr, 1682 enum mlx4_net_trans_promisc_mode *type) 1683 { 1684 int err = 0; 1685 1686 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) || 1687 (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) || 1688 (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) { 1689 return -EOPNOTSUPP; 1690 } 1691 1692 if (flow_attr->num_of_specs == 0) { 1693 type[0] = MLX4_FS_MC_SNIFFER; 1694 type[1] = MLX4_FS_UC_SNIFFER; 1695 } else { 1696 union ib_flow_spec *ib_spec; 1697 1698 ib_spec = (union ib_flow_spec *)(flow_attr + 1); 1699 if (ib_spec->type != IB_FLOW_SPEC_ETH) 1700 return -EINVAL; 1701 1702 /* if all is zero than MC and UC */ 1703 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) { 1704 type[0] = MLX4_FS_MC_SNIFFER; 1705 type[1] = MLX4_FS_UC_SNIFFER; 1706 } else { 1707 u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01, 1708 ib_spec->eth.mask.dst_mac[1], 1709 ib_spec->eth.mask.dst_mac[2], 1710 ib_spec->eth.mask.dst_mac[3], 1711 ib_spec->eth.mask.dst_mac[4], 1712 ib_spec->eth.mask.dst_mac[5]}; 1713 1714 /* Above xor was only on MC bit, non empty mask is valid 1715 * only if this bit is set and rest are zero. 1716 */ 1717 if (!is_zero_ether_addr(&mac[0])) 1718 return -EINVAL; 1719 1720 if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac)) 1721 type[0] = MLX4_FS_MC_SNIFFER; 1722 else 1723 type[0] = MLX4_FS_UC_SNIFFER; 1724 } 1725 } 1726 1727 return err; 1728 } 1729 1730 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1731 struct ib_flow_attr *flow_attr, 1732 int domain) 1733 { 1734 int err = 0, i = 0, j = 0; 1735 struct mlx4_ib_flow *mflow; 1736 enum mlx4_net_trans_promisc_mode type[2]; 1737 struct mlx4_dev *dev = (to_mdev(qp->device))->dev; 1738 int is_bonded = mlx4_is_bonded(dev); 1739 1740 if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt) 1741 return ERR_PTR(-EINVAL); 1742 1743 if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && 1744 (flow_attr->type != IB_FLOW_ATTR_NORMAL)) 1745 return ERR_PTR(-EOPNOTSUPP); 1746 1747 memset(type, 0, sizeof(type)); 1748 1749 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1750 if (!mflow) { 1751 err = -ENOMEM; 1752 goto err_free; 1753 } 1754 1755 switch (flow_attr->type) { 1756 case IB_FLOW_ATTR_NORMAL: 1757 /* If dont trap flag (continue match) is set, under specific 1758 * condition traffic be replicated to given qp, 1759 * without stealing it 1760 */ 1761 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) { 1762 err = mlx4_ib_add_dont_trap_rule(dev, 1763 flow_attr, 1764 type); 1765 if (err) 1766 goto err_free; 1767 } else { 1768 type[0] = MLX4_FS_REGULAR; 1769 } 1770 break; 1771 1772 case IB_FLOW_ATTR_ALL_DEFAULT: 1773 type[0] = MLX4_FS_ALL_DEFAULT; 1774 break; 1775 1776 case IB_FLOW_ATTR_MC_DEFAULT: 1777 type[0] = MLX4_FS_MC_DEFAULT; 1778 break; 1779 1780 case IB_FLOW_ATTR_SNIFFER: 1781 type[0] = MLX4_FS_MIRROR_RX_PORT; 1782 type[1] = MLX4_FS_MIRROR_SX_PORT; 1783 break; 1784 1785 default: 1786 err = -EINVAL; 1787 goto err_free; 1788 } 1789 1790 while (i < ARRAY_SIZE(type) && type[i]) { 1791 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 1792 &mflow->reg_id[i].id); 1793 if (err) 1794 goto err_create_flow; 1795 if (is_bonded) { 1796 /* Application always sees one port so the mirror rule 1797 * must be on port #2 1798 */ 1799 flow_attr->port = 2; 1800 err = __mlx4_ib_create_flow(qp, flow_attr, 1801 domain, type[j], 1802 &mflow->reg_id[j].mirror); 1803 flow_attr->port = 1; 1804 if (err) 1805 goto err_create_flow; 1806 j++; 1807 } 1808 1809 i++; 1810 } 1811 1812 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1813 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1814 &mflow->reg_id[i].id); 1815 if (err) 1816 goto err_create_flow; 1817 1818 if (is_bonded) { 1819 flow_attr->port = 2; 1820 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1821 &mflow->reg_id[j].mirror); 1822 flow_attr->port = 1; 1823 if (err) 1824 goto err_create_flow; 1825 j++; 1826 } 1827 /* function to create mirror rule */ 1828 i++; 1829 } 1830 1831 return &mflow->ibflow; 1832 1833 err_create_flow: 1834 while (i) { 1835 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1836 mflow->reg_id[i].id); 1837 i--; 1838 } 1839 1840 while (j) { 1841 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1842 mflow->reg_id[j].mirror); 1843 j--; 1844 } 1845 err_free: 1846 kfree(mflow); 1847 return ERR_PTR(err); 1848 } 1849 1850 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1851 { 1852 int err, ret = 0; 1853 int i = 0; 1854 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1855 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1856 1857 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { 1858 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); 1859 if (err) 1860 ret = err; 1861 if (mflow->reg_id[i].mirror) { 1862 err = __mlx4_ib_destroy_flow(mdev->dev, 1863 mflow->reg_id[i].mirror); 1864 if (err) 1865 ret = err; 1866 } 1867 i++; 1868 } 1869 1870 kfree(mflow); 1871 return ret; 1872 } 1873 1874 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1875 { 1876 int err; 1877 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1878 struct mlx4_dev *dev = mdev->dev; 1879 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1880 struct mlx4_ib_steering *ib_steering = NULL; 1881 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1882 struct mlx4_flow_reg_id reg_id; 1883 1884 if (mdev->dev->caps.steering_mode == 1885 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1886 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1887 if (!ib_steering) 1888 return -ENOMEM; 1889 } 1890 1891 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1892 !!(mqp->flags & 1893 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1894 prot, ®_id.id); 1895 if (err) { 1896 pr_err("multicast attach op failed, err %d\n", err); 1897 goto err_malloc; 1898 } 1899 1900 reg_id.mirror = 0; 1901 if (mlx4_is_bonded(dev)) { 1902 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 1903 (mqp->port == 1) ? 2 : 1, 1904 !!(mqp->flags & 1905 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1906 prot, ®_id.mirror); 1907 if (err) 1908 goto err_add; 1909 } 1910 1911 err = add_gid_entry(ibqp, gid); 1912 if (err) 1913 goto err_add; 1914 1915 if (ib_steering) { 1916 memcpy(ib_steering->gid.raw, gid->raw, 16); 1917 ib_steering->reg_id = reg_id; 1918 mutex_lock(&mqp->mutex); 1919 list_add(&ib_steering->list, &mqp->steering_rules); 1920 mutex_unlock(&mqp->mutex); 1921 } 1922 return 0; 1923 1924 err_add: 1925 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1926 prot, reg_id.id); 1927 if (reg_id.mirror) 1928 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1929 prot, reg_id.mirror); 1930 err_malloc: 1931 kfree(ib_steering); 1932 1933 return err; 1934 } 1935 1936 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1937 { 1938 struct mlx4_ib_gid_entry *ge; 1939 struct mlx4_ib_gid_entry *tmp; 1940 struct mlx4_ib_gid_entry *ret = NULL; 1941 1942 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1943 if (!memcmp(raw, ge->gid.raw, 16)) { 1944 ret = ge; 1945 break; 1946 } 1947 } 1948 1949 return ret; 1950 } 1951 1952 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1953 { 1954 int err; 1955 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1956 struct mlx4_dev *dev = mdev->dev; 1957 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1958 struct net_device *ndev; 1959 struct mlx4_ib_gid_entry *ge; 1960 struct mlx4_flow_reg_id reg_id = {0, 0}; 1961 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1962 1963 if (mdev->dev->caps.steering_mode == 1964 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1965 struct mlx4_ib_steering *ib_steering; 1966 1967 mutex_lock(&mqp->mutex); 1968 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1969 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1970 list_del(&ib_steering->list); 1971 break; 1972 } 1973 } 1974 mutex_unlock(&mqp->mutex); 1975 if (&ib_steering->list == &mqp->steering_rules) { 1976 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1977 return -EINVAL; 1978 } 1979 reg_id = ib_steering->reg_id; 1980 kfree(ib_steering); 1981 } 1982 1983 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1984 prot, reg_id.id); 1985 if (err) 1986 return err; 1987 1988 if (mlx4_is_bonded(dev)) { 1989 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1990 prot, reg_id.mirror); 1991 if (err) 1992 return err; 1993 } 1994 1995 mutex_lock(&mqp->mutex); 1996 ge = find_gid_entry(mqp, gid->raw); 1997 if (ge) { 1998 spin_lock_bh(&mdev->iboe.lock); 1999 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 2000 if (ndev) 2001 dev_hold(ndev); 2002 spin_unlock_bh(&mdev->iboe.lock); 2003 if (ndev) 2004 dev_put(ndev); 2005 list_del(&ge->list); 2006 kfree(ge); 2007 } else 2008 pr_warn("could not find mgid entry\n"); 2009 2010 mutex_unlock(&mqp->mutex); 2011 2012 return 0; 2013 } 2014 2015 static int init_node_data(struct mlx4_ib_dev *dev) 2016 { 2017 struct ib_smp *in_mad = NULL; 2018 struct ib_smp *out_mad = NULL; 2019 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 2020 int err = -ENOMEM; 2021 2022 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 2023 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 2024 if (!in_mad || !out_mad) 2025 goto out; 2026 2027 init_query_mad(in_mad); 2028 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 2029 if (mlx4_is_master(dev->dev)) 2030 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 2031 2032 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2033 if (err) 2034 goto out; 2035 2036 memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX); 2037 2038 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 2039 2040 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 2041 if (err) 2042 goto out; 2043 2044 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 2045 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 2046 2047 out: 2048 kfree(in_mad); 2049 kfree(out_mad); 2050 return err; 2051 } 2052 2053 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 2054 char *buf) 2055 { 2056 struct mlx4_ib_dev *dev = 2057 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 2058 return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device); 2059 } 2060 2061 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 2062 char *buf) 2063 { 2064 struct mlx4_ib_dev *dev = 2065 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 2066 return sprintf(buf, "%x\n", dev->dev->rev_id); 2067 } 2068 2069 static ssize_t show_board(struct device *device, struct device_attribute *attr, 2070 char *buf) 2071 { 2072 struct mlx4_ib_dev *dev = 2073 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 2074 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 2075 dev->dev->board_id); 2076 } 2077 2078 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 2079 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 2080 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 2081 2082 static struct device_attribute *mlx4_class_attributes[] = { 2083 &dev_attr_hw_rev, 2084 &dev_attr_hca_type, 2085 &dev_attr_board_id 2086 }; 2087 2088 struct diag_counter { 2089 const char *name; 2090 u32 offset; 2091 }; 2092 2093 #define DIAG_COUNTER(_name, _offset) \ 2094 { .name = #_name, .offset = _offset } 2095 2096 static const struct diag_counter diag_basic[] = { 2097 DIAG_COUNTER(rq_num_lle, 0x00), 2098 DIAG_COUNTER(sq_num_lle, 0x04), 2099 DIAG_COUNTER(rq_num_lqpoe, 0x08), 2100 DIAG_COUNTER(sq_num_lqpoe, 0x0C), 2101 DIAG_COUNTER(rq_num_lpe, 0x18), 2102 DIAG_COUNTER(sq_num_lpe, 0x1C), 2103 DIAG_COUNTER(rq_num_wrfe, 0x20), 2104 DIAG_COUNTER(sq_num_wrfe, 0x24), 2105 DIAG_COUNTER(sq_num_mwbe, 0x2C), 2106 DIAG_COUNTER(sq_num_bre, 0x34), 2107 DIAG_COUNTER(sq_num_rire, 0x44), 2108 DIAG_COUNTER(rq_num_rire, 0x48), 2109 DIAG_COUNTER(sq_num_rae, 0x4C), 2110 DIAG_COUNTER(rq_num_rae, 0x50), 2111 DIAG_COUNTER(sq_num_roe, 0x54), 2112 DIAG_COUNTER(sq_num_tree, 0x5C), 2113 DIAG_COUNTER(sq_num_rree, 0x64), 2114 DIAG_COUNTER(rq_num_rnr, 0x68), 2115 DIAG_COUNTER(sq_num_rnr, 0x6C), 2116 DIAG_COUNTER(rq_num_oos, 0x100), 2117 DIAG_COUNTER(sq_num_oos, 0x104), 2118 }; 2119 2120 static const struct diag_counter diag_ext[] = { 2121 DIAG_COUNTER(rq_num_dup, 0x130), 2122 DIAG_COUNTER(sq_num_to, 0x134), 2123 }; 2124 2125 static const struct diag_counter diag_device_only[] = { 2126 DIAG_COUNTER(num_cqovf, 0x1A0), 2127 DIAG_COUNTER(rq_num_udsdprd, 0x118), 2128 }; 2129 2130 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev, 2131 u8 port_num) 2132 { 2133 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2134 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2135 2136 if (!diag[!!port_num].name) 2137 return NULL; 2138 2139 return rdma_alloc_hw_stats_struct(diag[!!port_num].name, 2140 diag[!!port_num].num_counters, 2141 RDMA_HW_STATS_DEFAULT_LIFESPAN); 2142 } 2143 2144 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev, 2145 struct rdma_hw_stats *stats, 2146 u8 port, int index) 2147 { 2148 struct mlx4_ib_dev *dev = to_mdev(ibdev); 2149 struct mlx4_ib_diag_counters *diag = dev->diag_counters; 2150 u32 hw_value[ARRAY_SIZE(diag_device_only) + 2151 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {}; 2152 int ret; 2153 int i; 2154 2155 ret = mlx4_query_diag_counters(dev->dev, 2156 MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS, 2157 diag[!!port].offset, hw_value, 2158 diag[!!port].num_counters, port); 2159 2160 if (ret) 2161 return ret; 2162 2163 for (i = 0; i < diag[!!port].num_counters; i++) 2164 stats->value[i] = hw_value[i]; 2165 2166 return diag[!!port].num_counters; 2167 } 2168 2169 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev, 2170 const char ***name, 2171 u32 **offset, 2172 u32 *num, 2173 bool port) 2174 { 2175 u32 num_counters; 2176 2177 num_counters = ARRAY_SIZE(diag_basic); 2178 2179 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) 2180 num_counters += ARRAY_SIZE(diag_ext); 2181 2182 if (!port) 2183 num_counters += ARRAY_SIZE(diag_device_only); 2184 2185 *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL); 2186 if (!*name) 2187 return -ENOMEM; 2188 2189 *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL); 2190 if (!*offset) 2191 goto err_name; 2192 2193 *num = num_counters; 2194 2195 return 0; 2196 2197 err_name: 2198 kfree(*name); 2199 return -ENOMEM; 2200 } 2201 2202 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev, 2203 const char **name, 2204 u32 *offset, 2205 bool port) 2206 { 2207 int i; 2208 int j; 2209 2210 for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) { 2211 name[i] = diag_basic[i].name; 2212 offset[i] = diag_basic[i].offset; 2213 } 2214 2215 if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) { 2216 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) { 2217 name[j] = diag_ext[i].name; 2218 offset[j] = diag_ext[i].offset; 2219 } 2220 } 2221 2222 if (!port) { 2223 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) { 2224 name[j] = diag_device_only[i].name; 2225 offset[j] = diag_device_only[i].offset; 2226 } 2227 } 2228 } 2229 2230 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev) 2231 { 2232 struct mlx4_ib_diag_counters *diag = ibdev->diag_counters; 2233 int i; 2234 int ret; 2235 bool per_port = !!(ibdev->dev->caps.flags2 & 2236 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT); 2237 2238 if (mlx4_is_slave(ibdev->dev)) 2239 return 0; 2240 2241 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2242 /* i == 1 means we are building port counters */ 2243 if (i && !per_port) 2244 continue; 2245 2246 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name, 2247 &diag[i].offset, 2248 &diag[i].num_counters, i); 2249 if (ret) 2250 goto err_alloc; 2251 2252 mlx4_ib_fill_diag_counters(ibdev, diag[i].name, 2253 diag[i].offset, i); 2254 } 2255 2256 ibdev->ib_dev.get_hw_stats = mlx4_ib_get_hw_stats; 2257 ibdev->ib_dev.alloc_hw_stats = mlx4_ib_alloc_hw_stats; 2258 2259 return 0; 2260 2261 err_alloc: 2262 if (i) { 2263 kfree(diag[i - 1].name); 2264 kfree(diag[i - 1].offset); 2265 } 2266 2267 return ret; 2268 } 2269 2270 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev) 2271 { 2272 int i; 2273 2274 for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) { 2275 kfree(ibdev->diag_counters[i].offset); 2276 kfree(ibdev->diag_counters[i].name); 2277 } 2278 } 2279 2280 #define MLX4_IB_INVALID_MAC ((u64)-1) 2281 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 2282 struct net_device *dev, 2283 int port) 2284 { 2285 u64 new_smac = 0; 2286 u64 release_mac = MLX4_IB_INVALID_MAC; 2287 struct mlx4_ib_qp *qp; 2288 2289 new_smac = mlx4_mac_to_u64(IF_LLADDR(dev)); 2290 2291 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); 2292 2293 /* no need for update QP1 and mac registration in non-SRIOV */ 2294 if (!mlx4_is_mfunc(ibdev->dev)) 2295 return; 2296 2297 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 2298 qp = ibdev->qp1_proxy[port - 1]; 2299 if (qp) { 2300 int new_smac_index; 2301 u64 old_smac; 2302 struct mlx4_update_qp_params update_params; 2303 2304 mutex_lock(&qp->mutex); 2305 old_smac = qp->pri.smac; 2306 if (new_smac == old_smac) 2307 goto unlock; 2308 2309 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 2310 2311 if (new_smac_index < 0) 2312 goto unlock; 2313 2314 update_params.smac_index = new_smac_index; 2315 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, 2316 &update_params)) { 2317 release_mac = new_smac; 2318 goto unlock; 2319 } 2320 /* if old port was zero, no mac was yet registered for this QP */ 2321 if (qp->pri.smac_port) 2322 release_mac = old_smac; 2323 qp->pri.smac = new_smac; 2324 qp->pri.smac_port = port; 2325 qp->pri.smac_index = new_smac_index; 2326 } 2327 2328 unlock: 2329 if (release_mac != MLX4_IB_INVALID_MAC) 2330 mlx4_unregister_mac(ibdev->dev, port, release_mac); 2331 if (qp) 2332 mutex_unlock(&qp->mutex); 2333 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 2334 } 2335 2336 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, 2337 struct net_device *dev, 2338 unsigned long event) 2339 2340 { 2341 struct mlx4_ib_iboe *iboe; 2342 int update_qps_port = -1; 2343 int port; 2344 2345 iboe = &ibdev->iboe; 2346 2347 spin_lock_bh(&iboe->lock); 2348 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 2349 2350 iboe->netdevs[port - 1] = 2351 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 2352 2353 if (dev == iboe->netdevs[port - 1] && 2354 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || 2355 event == NETDEV_UP || event == NETDEV_CHANGE)) 2356 update_qps_port = port; 2357 2358 } 2359 spin_unlock_bh(&iboe->lock); 2360 2361 if (update_qps_port > 0) 2362 mlx4_ib_update_qps(ibdev, dev, update_qps_port); 2363 } 2364 2365 static int mlx4_ib_netdev_event(struct notifier_block *this, 2366 unsigned long event, void *ptr) 2367 { 2368 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 2369 struct mlx4_ib_dev *ibdev; 2370 2371 if (!net_eq(dev_net(dev), &init_net)) 2372 return NOTIFY_DONE; 2373 2374 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 2375 mlx4_ib_scan_netdevs(ibdev, dev, event); 2376 2377 return NOTIFY_DONE; 2378 } 2379 2380 static void init_pkeys(struct mlx4_ib_dev *ibdev) 2381 { 2382 int port; 2383 int slave; 2384 int i; 2385 2386 if (mlx4_is_master(ibdev->dev)) { 2387 for (slave = 0; slave <= ibdev->dev->persist->num_vfs; 2388 ++slave) { 2389 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2390 for (i = 0; 2391 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2392 ++i) { 2393 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 2394 /* master has the identity virt2phys pkey mapping */ 2395 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 2396 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 2397 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 2398 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 2399 } 2400 } 2401 } 2402 /* initialize pkey cache */ 2403 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2404 for (i = 0; 2405 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2406 ++i) 2407 ibdev->pkeys.phys_pkey_cache[port-1][i] = 2408 (i) ? 0 : 0xFFFF; 2409 } 2410 } 2411 } 2412 2413 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2414 { 2415 int i, j, eq = 0, total_eqs = 0; 2416 2417 ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors, 2418 sizeof(ibdev->eq_table[0]), GFP_KERNEL); 2419 if (!ibdev->eq_table) 2420 return; 2421 2422 for (i = 1; i <= dev->caps.num_ports; i++) { 2423 for (j = 0; j < mlx4_get_eqs_per_port(dev, i); 2424 j++, total_eqs++) { 2425 if (i > 1 && mlx4_is_eq_shared(dev, total_eqs)) 2426 continue; 2427 ibdev->eq_table[eq] = total_eqs; 2428 if (!mlx4_assign_eq(dev, i, 2429 &ibdev->eq_table[eq])) 2430 eq++; 2431 else 2432 ibdev->eq_table[eq] = -1; 2433 } 2434 } 2435 2436 for (i = eq; i < dev->caps.num_comp_vectors; 2437 ibdev->eq_table[i++] = -1) 2438 ; 2439 2440 /* Advertise the new number of EQs to clients */ 2441 ibdev->ib_dev.num_comp_vectors = eq; 2442 } 2443 2444 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2445 { 2446 int i; 2447 int total_eqs = ibdev->ib_dev.num_comp_vectors; 2448 2449 /* no eqs were allocated */ 2450 if (!ibdev->eq_table) 2451 return; 2452 2453 /* Reset the advertised EQ number */ 2454 ibdev->ib_dev.num_comp_vectors = 0; 2455 2456 for (i = 0; i < total_eqs; i++) 2457 mlx4_release_eq(dev, ibdev->eq_table[i]); 2458 2459 kfree(ibdev->eq_table); 2460 ibdev->eq_table = NULL; 2461 } 2462 2463 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num, 2464 struct ib_port_immutable *immutable) 2465 { 2466 struct ib_port_attr attr; 2467 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 2468 int err; 2469 2470 err = mlx4_ib_query_port(ibdev, port_num, &attr); 2471 if (err) 2472 return err; 2473 2474 immutable->pkey_tbl_len = attr.pkey_tbl_len; 2475 immutable->gid_tbl_len = attr.gid_tbl_len; 2476 2477 if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) { 2478 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB; 2479 } else { 2480 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) 2481 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 2482 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 2483 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE | 2484 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2485 } 2486 2487 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2488 2489 return 0; 2490 } 2491 2492 static void get_fw_ver_str(struct ib_device *device, char *str, 2493 size_t str_len) 2494 { 2495 struct mlx4_ib_dev *dev = 2496 container_of(device, struct mlx4_ib_dev, ib_dev); 2497 snprintf(str, str_len, "%d.%d.%d", 2498 (int) (dev->dev->caps.fw_ver >> 32), 2499 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 2500 (int) dev->dev->caps.fw_ver & 0xffff); 2501 } 2502 2503 static void *mlx4_ib_add(struct mlx4_dev *dev) 2504 { 2505 struct mlx4_ib_dev *ibdev; 2506 int num_ports; 2507 int i, j; 2508 int err; 2509 struct mlx4_ib_iboe *iboe; 2510 int ib_num_ports = 0; 2511 int num_req_counters; 2512 int allocated; 2513 u32 counter_index; 2514 struct counter_index *new_counter_index = NULL; 2515 2516 pr_info_once("%s", mlx4_ib_version); 2517 2518 num_ports = 0; 2519 mlx4_foreach_ib_transport_port(i, dev) 2520 num_ports++; 2521 2522 /* No point in registering a device with no ports... */ 2523 if (num_ports == 0) 2524 return NULL; 2525 2526 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 2527 if (!ibdev) { 2528 dev_err(&dev->persist->pdev->dev, 2529 "Device struct alloc failed\n"); 2530 return NULL; 2531 } 2532 2533 iboe = &ibdev->iboe; 2534 2535 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 2536 goto err_dealloc; 2537 2538 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 2539 goto err_pd; 2540 2541 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 2542 PAGE_SIZE); 2543 if (!ibdev->uar_map) 2544 goto err_uar; 2545 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 2546 2547 ibdev->dev = dev; 2548 ibdev->bond_next_port = 0; 2549 2550 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 2551 ibdev->ib_dev.owner = THIS_MODULE; 2552 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 2553 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 2554 ibdev->num_ports = num_ports; 2555 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ? 2556 1 : ibdev->num_ports; 2557 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2558 ibdev->ib_dev.dma_device = &dev->persist->pdev->dev; 2559 ibdev->ib_dev.get_netdev = mlx4_ib_get_netdev; 2560 ibdev->ib_dev.add_gid = mlx4_ib_add_gid; 2561 ibdev->ib_dev.del_gid = mlx4_ib_del_gid; 2562 2563 if (dev->caps.userspace_caps) 2564 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 2565 else 2566 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 2567 2568 ibdev->ib_dev.uverbs_cmd_mask = 2569 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 2570 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 2571 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 2572 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 2573 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 2574 (1ull << IB_USER_VERBS_CMD_REG_MR) | 2575 (1ull << IB_USER_VERBS_CMD_REREG_MR) | 2576 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 2577 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 2578 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 2579 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 2580 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 2581 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 2582 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 2583 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 2584 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 2585 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 2586 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 2587 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 2588 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 2589 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 2590 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 2591 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 2592 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 2593 2594 ibdev->ib_dev.query_device = mlx4_ib_query_device; 2595 ibdev->ib_dev.query_port = mlx4_ib_query_port; 2596 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 2597 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 2598 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 2599 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 2600 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 2601 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 2602 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 2603 ibdev->ib_dev.mmap = mlx4_ib_mmap; 2604 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 2605 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 2606 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 2607 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 2608 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 2609 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 2610 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 2611 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 2612 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 2613 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 2614 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 2615 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 2616 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 2617 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 2618 ibdev->ib_dev.post_send = mlx4_ib_post_send; 2619 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 2620 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 2621 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 2622 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 2623 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 2624 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 2625 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 2626 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 2627 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 2628 ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr; 2629 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 2630 ibdev->ib_dev.alloc_mr = mlx4_ib_alloc_mr; 2631 ibdev->ib_dev.map_mr_sg = mlx4_ib_map_mr_sg; 2632 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 2633 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 2634 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 2635 ibdev->ib_dev.get_port_immutable = mlx4_port_immutable; 2636 ibdev->ib_dev.get_dev_fw_str = get_fw_ver_str; 2637 2638 if (!mlx4_is_slave(ibdev->dev)) { 2639 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 2640 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 2641 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 2642 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 2643 } 2644 2645 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2646 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 2647 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw; 2648 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw; 2649 2650 ibdev->ib_dev.uverbs_cmd_mask |= 2651 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 2652 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 2653 } 2654 2655 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2656 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 2657 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 2658 ibdev->ib_dev.uverbs_cmd_mask |= 2659 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 2660 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 2661 } 2662 2663 if (check_flow_steering_support(dev)) { 2664 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2665 ibdev->ib_dev.create_flow = mlx4_ib_create_flow; 2666 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow; 2667 2668 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2669 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 2670 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 2671 } 2672 2673 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2674 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) | 2675 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) | 2676 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP); 2677 2678 mlx4_ib_alloc_eqs(dev, ibdev); 2679 2680 spin_lock_init(&iboe->lock); 2681 2682 if (init_node_data(ibdev)) 2683 goto err_map; 2684 mlx4_init_sl2vl_tbl(ibdev); 2685 2686 for (i = 0; i < ibdev->num_ports; ++i) { 2687 mutex_init(&ibdev->counters_table[i].mutex); 2688 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list); 2689 } 2690 2691 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; 2692 for (i = 0; i < num_req_counters; ++i) { 2693 mutex_init(&ibdev->qp1_proxy_lock[i]); 2694 allocated = 0; 2695 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2696 IB_LINK_LAYER_ETHERNET) { 2697 err = mlx4_counter_alloc(ibdev->dev, &counter_index); 2698 /* if failed to allocate a new counter, use default */ 2699 if (err) 2700 counter_index = 2701 mlx4_get_default_counter_index(dev, 2702 i + 1); 2703 else 2704 allocated = 1; 2705 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */ 2706 counter_index = mlx4_get_default_counter_index(dev, 2707 i + 1); 2708 } 2709 new_counter_index = kmalloc(sizeof(*new_counter_index), 2710 GFP_KERNEL); 2711 if (!new_counter_index) { 2712 if (allocated) 2713 mlx4_counter_free(ibdev->dev, counter_index); 2714 goto err_counter; 2715 } 2716 new_counter_index->index = counter_index; 2717 new_counter_index->allocated = allocated; 2718 list_add_tail(&new_counter_index->list, 2719 &ibdev->counters_table[i].counters_list); 2720 ibdev->counters_table[i].default_counter = counter_index; 2721 pr_info("counter index %d for port %d allocated %d\n", 2722 counter_index, i + 1, allocated); 2723 } 2724 if (mlx4_is_bonded(dev)) 2725 for (i = 1; i < ibdev->num_ports ; ++i) { 2726 new_counter_index = 2727 kmalloc(sizeof(struct counter_index), 2728 GFP_KERNEL); 2729 if (!new_counter_index) 2730 goto err_counter; 2731 new_counter_index->index = counter_index; 2732 new_counter_index->allocated = 0; 2733 list_add_tail(&new_counter_index->list, 2734 &ibdev->counters_table[i].counters_list); 2735 ibdev->counters_table[i].default_counter = 2736 counter_index; 2737 } 2738 2739 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2740 ib_num_ports++; 2741 2742 spin_lock_init(&ibdev->sm_lock); 2743 mutex_init(&ibdev->cap_mask_mutex); 2744 INIT_LIST_HEAD(&ibdev->qp_list); 2745 spin_lock_init(&ibdev->reset_flow_resource_lock); 2746 2747 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2748 ib_num_ports) { 2749 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2750 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2751 MLX4_IB_UC_STEER_QPN_ALIGN, 2752 &ibdev->steer_qpn_base, 0); 2753 if (err) 2754 goto err_counter; 2755 2756 ibdev->ib_uc_qpns_bitmap = 2757 kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) * 2758 sizeof(long), 2759 GFP_KERNEL); 2760 if (!ibdev->ib_uc_qpns_bitmap) { 2761 dev_err(&dev->persist->pdev->dev, 2762 "bit map alloc failed\n"); 2763 goto err_steer_qp_release; 2764 } 2765 2766 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count); 2767 2768 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2769 dev, ibdev->steer_qpn_base, 2770 ibdev->steer_qpn_base + 2771 ibdev->steer_qpn_count - 1); 2772 if (err) 2773 goto err_steer_free_bitmap; 2774 } 2775 2776 for (j = 1; j <= ibdev->dev->caps.num_ports; j++) 2777 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); 2778 2779 if (mlx4_ib_alloc_diag_counters(ibdev)) 2780 goto err_steer_free_bitmap; 2781 2782 if (ib_register_device(&ibdev->ib_dev, NULL)) 2783 goto err_diag_counters; 2784 2785 if (mlx4_ib_mad_init(ibdev)) 2786 goto err_reg; 2787 2788 if (mlx4_ib_init_sriov(ibdev)) 2789 goto err_mad; 2790 2791 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE || 2792 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { 2793 if (!iboe->nb.notifier_call) { 2794 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2795 err = register_netdevice_notifier(&iboe->nb); 2796 if (err) { 2797 iboe->nb.notifier_call = NULL; 2798 goto err_notif; 2799 } 2800 } 2801 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { 2802 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT); 2803 if (err) { 2804 goto err_notif; 2805 } 2806 } 2807 } 2808 2809 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 2810 if (device_create_file(&ibdev->ib_dev.dev, 2811 mlx4_class_attributes[j])) 2812 goto err_notif; 2813 } 2814 2815 ibdev->ib_active = true; 2816 2817 if (mlx4_is_mfunc(ibdev->dev)) 2818 init_pkeys(ibdev); 2819 2820 /* create paravirt contexts for any VFs which are active */ 2821 if (mlx4_is_master(ibdev->dev)) { 2822 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2823 if (j == mlx4_master_func_num(ibdev->dev)) 2824 continue; 2825 if (mlx4_is_slave_active(ibdev->dev, j)) 2826 do_slave_init(ibdev, j, 1); 2827 } 2828 } 2829 return ibdev; 2830 2831 err_notif: 2832 if (ibdev->iboe.nb.notifier_call) { 2833 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2834 pr_warn("failure unregistering notifier\n"); 2835 ibdev->iboe.nb.notifier_call = NULL; 2836 } 2837 flush_workqueue(wq); 2838 2839 mlx4_ib_close_sriov(ibdev); 2840 2841 err_mad: 2842 mlx4_ib_mad_cleanup(ibdev); 2843 2844 err_reg: 2845 ib_unregister_device(&ibdev->ib_dev); 2846 2847 err_diag_counters: 2848 mlx4_ib_diag_cleanup(ibdev); 2849 2850 err_steer_free_bitmap: 2851 kfree(ibdev->ib_uc_qpns_bitmap); 2852 2853 err_steer_qp_release: 2854 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 2855 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2856 ibdev->steer_qpn_count); 2857 err_counter: 2858 for (i = 0; i < ibdev->num_ports; ++i) 2859 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]); 2860 2861 err_map: 2862 iounmap(ibdev->uar_map); 2863 2864 err_uar: 2865 mlx4_uar_free(dev, &ibdev->priv_uar); 2866 2867 err_pd: 2868 mlx4_pd_free(dev, ibdev->priv_pdn); 2869 2870 err_dealloc: 2871 ib_dealloc_device(&ibdev->ib_dev); 2872 2873 return NULL; 2874 } 2875 2876 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2877 { 2878 int offset; 2879 2880 WARN_ON(!dev->ib_uc_qpns_bitmap); 2881 2882 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2883 dev->steer_qpn_count, 2884 get_count_order(count)); 2885 if (offset < 0) 2886 return offset; 2887 2888 *qpn = dev->steer_qpn_base + offset; 2889 return 0; 2890 } 2891 2892 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2893 { 2894 if (!qpn || 2895 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2896 return; 2897 2898 BUG_ON(qpn < dev->steer_qpn_base); 2899 2900 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2901 qpn - dev->steer_qpn_base, 2902 get_count_order(count)); 2903 } 2904 2905 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2906 int is_attach) 2907 { 2908 int err; 2909 size_t flow_size; 2910 struct ib_flow_attr *flow = NULL; 2911 struct ib_flow_spec_ib *ib_spec; 2912 2913 if (is_attach) { 2914 flow_size = sizeof(struct ib_flow_attr) + 2915 sizeof(struct ib_flow_spec_ib); 2916 flow = kzalloc(flow_size, GFP_KERNEL); 2917 if (!flow) 2918 return -ENOMEM; 2919 flow->port = mqp->port; 2920 flow->num_of_specs = 1; 2921 flow->size = flow_size; 2922 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2923 ib_spec->type = IB_FLOW_SPEC_IB; 2924 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2925 /* Add an empty rule for IB L2 */ 2926 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2927 2928 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, 2929 IB_FLOW_DOMAIN_NIC, 2930 MLX4_FS_REGULAR, 2931 &mqp->reg_id); 2932 } else { 2933 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2934 } 2935 kfree(flow); 2936 return err; 2937 } 2938 2939 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 2940 { 2941 struct mlx4_ib_dev *ibdev = ibdev_ptr; 2942 int p; 2943 2944 ibdev->ib_active = false; 2945 flush_workqueue(wq); 2946 2947 mlx4_ib_close_sriov(ibdev); 2948 mlx4_ib_mad_cleanup(ibdev); 2949 ib_unregister_device(&ibdev->ib_dev); 2950 mlx4_ib_diag_cleanup(ibdev); 2951 if (ibdev->iboe.nb.notifier_call) { 2952 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2953 pr_warn("failure unregistering notifier\n"); 2954 ibdev->iboe.nb.notifier_call = NULL; 2955 } 2956 2957 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) { 2958 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2959 ibdev->steer_qpn_count); 2960 kfree(ibdev->ib_uc_qpns_bitmap); 2961 } 2962 2963 iounmap(ibdev->uar_map); 2964 for (p = 0; p < ibdev->num_ports; ++p) 2965 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]); 2966 2967 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 2968 mlx4_CLOSE_PORT(dev, p); 2969 2970 mlx4_ib_free_eqs(dev, ibdev); 2971 2972 mlx4_uar_free(dev, &ibdev->priv_uar); 2973 mlx4_pd_free(dev, ibdev->priv_pdn); 2974 ib_dealloc_device(&ibdev->ib_dev); 2975 } 2976 2977 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 2978 { 2979 struct mlx4_ib_demux_work **dm = NULL; 2980 struct mlx4_dev *dev = ibdev->dev; 2981 int i; 2982 unsigned long flags; 2983 struct mlx4_active_ports actv_ports; 2984 unsigned int ports; 2985 unsigned int first_port; 2986 2987 if (!mlx4_is_master(dev)) 2988 return; 2989 2990 actv_ports = mlx4_get_active_ports(dev, slave); 2991 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 2992 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 2993 2994 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); 2995 if (!dm) { 2996 pr_err("failed to allocate memory for tunneling qp update\n"); 2997 return; 2998 } 2999 3000 for (i = 0; i < ports; i++) { 3001 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 3002 if (!dm[i]) { 3003 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 3004 while (--i >= 0) 3005 kfree(dm[i]); 3006 goto out; 3007 } 3008 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 3009 dm[i]->port = first_port + i + 1; 3010 dm[i]->slave = slave; 3011 dm[i]->do_init = do_init; 3012 dm[i]->dev = ibdev; 3013 } 3014 /* initialize or tear down tunnel QPs for the slave */ 3015 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 3016 if (!ibdev->sriov.is_going_down) { 3017 for (i = 0; i < ports; i++) 3018 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 3019 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3020 } else { 3021 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 3022 for (i = 0; i < ports; i++) 3023 kfree(dm[i]); 3024 } 3025 out: 3026 kfree(dm); 3027 return; 3028 } 3029 3030 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev) 3031 { 3032 struct mlx4_ib_qp *mqp; 3033 unsigned long flags_qp; 3034 unsigned long flags_cq; 3035 struct mlx4_ib_cq *send_mcq, *recv_mcq; 3036 struct list_head cq_notify_list; 3037 struct mlx4_cq *mcq; 3038 unsigned long flags; 3039 3040 pr_warn("mlx4_ib_handle_catas_error was started\n"); 3041 INIT_LIST_HEAD(&cq_notify_list); 3042 3043 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 3044 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 3045 3046 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 3047 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 3048 if (mqp->sq.tail != mqp->sq.head) { 3049 send_mcq = to_mcq(mqp->ibqp.send_cq); 3050 spin_lock_irqsave(&send_mcq->lock, flags_cq); 3051 if (send_mcq->mcq.comp && 3052 mqp->ibqp.send_cq->comp_handler) { 3053 if (!send_mcq->mcq.reset_notify_added) { 3054 send_mcq->mcq.reset_notify_added = 1; 3055 list_add_tail(&send_mcq->mcq.reset_notify, 3056 &cq_notify_list); 3057 } 3058 } 3059 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 3060 } 3061 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 3062 /* Now, handle the QP's receive queue */ 3063 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 3064 /* no handling is needed for SRQ */ 3065 if (!mqp->ibqp.srq) { 3066 if (mqp->rq.tail != mqp->rq.head) { 3067 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 3068 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 3069 if (recv_mcq->mcq.comp && 3070 mqp->ibqp.recv_cq->comp_handler) { 3071 if (!recv_mcq->mcq.reset_notify_added) { 3072 recv_mcq->mcq.reset_notify_added = 1; 3073 list_add_tail(&recv_mcq->mcq.reset_notify, 3074 &cq_notify_list); 3075 } 3076 } 3077 spin_unlock_irqrestore(&recv_mcq->lock, 3078 flags_cq); 3079 } 3080 } 3081 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 3082 } 3083 3084 list_for_each_entry(mcq, &cq_notify_list, reset_notify) { 3085 mcq->comp(mcq); 3086 } 3087 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 3088 pr_warn("mlx4_ib_handle_catas_error ended\n"); 3089 } 3090 3091 static void handle_bonded_port_state_event(struct work_struct *work) 3092 { 3093 struct ib_event_work *ew = 3094 container_of(work, struct ib_event_work, work); 3095 struct mlx4_ib_dev *ibdev = ew->ib_dev; 3096 enum ib_port_state bonded_port_state = IB_PORT_NOP; 3097 int i; 3098 struct ib_event ibev; 3099 3100 kfree(ew); 3101 spin_lock_bh(&ibdev->iboe.lock); 3102 for (i = 0; i < MLX4_MAX_PORTS; ++i) { 3103 struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; 3104 enum ib_port_state curr_port_state; 3105 3106 if (!curr_netdev) 3107 continue; 3108 3109 curr_port_state = 3110 (netif_running(curr_netdev) && 3111 netif_carrier_ok(curr_netdev)) ? 3112 IB_PORT_ACTIVE : IB_PORT_DOWN; 3113 3114 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ? 3115 curr_port_state : IB_PORT_ACTIVE; 3116 } 3117 spin_unlock_bh(&ibdev->iboe.lock); 3118 3119 ibev.device = &ibdev->ib_dev; 3120 ibev.element.port_num = 1; 3121 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ? 3122 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 3123 3124 ib_dispatch_event(&ibev); 3125 } 3126 3127 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port) 3128 { 3129 u64 sl2vl; 3130 int err; 3131 3132 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl); 3133 if (err) { 3134 pr_err("Unable to get current sl to vl mapping for port %d. Using all zeroes (%d)\n", 3135 port, err); 3136 sl2vl = 0; 3137 } 3138 atomic64_set(&mdev->sl2vl[port - 1], sl2vl); 3139 } 3140 3141 static void ib_sl2vl_update_work(struct work_struct *work) 3142 { 3143 struct ib_event_work *ew = container_of(work, struct ib_event_work, work); 3144 struct mlx4_ib_dev *mdev = ew->ib_dev; 3145 int port = ew->port; 3146 3147 mlx4_ib_sl2vl_update(mdev, port); 3148 3149 kfree(ew); 3150 } 3151 3152 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev, 3153 int port) 3154 { 3155 struct ib_event_work *ew; 3156 3157 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3158 if (ew) { 3159 INIT_WORK(&ew->work, ib_sl2vl_update_work); 3160 ew->port = port; 3161 ew->ib_dev = ibdev; 3162 queue_work(wq, &ew->work); 3163 } else { 3164 pr_err("failed to allocate memory for sl2vl update work\n"); 3165 } 3166 } 3167 3168 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 3169 enum mlx4_dev_event event, unsigned long param) 3170 { 3171 struct ib_event ibev; 3172 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 3173 struct mlx4_eqe *eqe = NULL; 3174 struct ib_event_work *ew; 3175 int p = 0; 3176 3177 if (mlx4_is_bonded(dev) && 3178 ((event == MLX4_DEV_EVENT_PORT_UP) || 3179 (event == MLX4_DEV_EVENT_PORT_DOWN))) { 3180 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 3181 if (!ew) 3182 return; 3183 INIT_WORK(&ew->work, handle_bonded_port_state_event); 3184 ew->ib_dev = ibdev; 3185 queue_work(wq, &ew->work); 3186 return; 3187 } 3188 3189 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 3190 eqe = (struct mlx4_eqe *)param; 3191 else 3192 p = (int) param; 3193 3194 switch (event) { 3195 case MLX4_DEV_EVENT_PORT_UP: 3196 if (p > ibdev->num_ports) 3197 return; 3198 if (!mlx4_is_slave(dev) && 3199 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 3200 IB_LINK_LAYER_INFINIBAND) { 3201 if (mlx4_is_master(dev)) 3202 mlx4_ib_invalidate_all_guid_record(ibdev, p); 3203 if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST && 3204 !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT)) 3205 mlx4_sched_ib_sl2vl_update_work(ibdev, p); 3206 } 3207 ibev.event = IB_EVENT_PORT_ACTIVE; 3208 break; 3209 3210 case MLX4_DEV_EVENT_PORT_DOWN: 3211 if (p > ibdev->num_ports) 3212 return; 3213 ibev.event = IB_EVENT_PORT_ERR; 3214 break; 3215 3216 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 3217 ibdev->ib_active = false; 3218 ibev.event = IB_EVENT_DEVICE_FATAL; 3219 mlx4_ib_handle_catas_error(ibdev); 3220 break; 3221 3222 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 3223 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 3224 if (!ew) { 3225 pr_err("failed to allocate memory for events work\n"); 3226 break; 3227 } 3228 3229 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 3230 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 3231 ew->ib_dev = ibdev; 3232 /* need to queue only for port owner, which uses GEN_EQE */ 3233 if (mlx4_is_master(dev)) 3234 queue_work(wq, &ew->work); 3235 else 3236 handle_port_mgmt_change_event(&ew->work); 3237 return; 3238 3239 case MLX4_DEV_EVENT_SLAVE_INIT: 3240 /* here, p is the slave id */ 3241 do_slave_init(ibdev, p, 1); 3242 if (mlx4_is_master(dev)) { 3243 int i; 3244 3245 for (i = 1; i <= ibdev->num_ports; i++) { 3246 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3247 == IB_LINK_LAYER_INFINIBAND) 3248 mlx4_ib_slave_alias_guid_event(ibdev, 3249 p, i, 3250 1); 3251 } 3252 } 3253 return; 3254 3255 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 3256 if (mlx4_is_master(dev)) { 3257 int i; 3258 3259 for (i = 1; i <= ibdev->num_ports; i++) { 3260 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 3261 == IB_LINK_LAYER_INFINIBAND) 3262 mlx4_ib_slave_alias_guid_event(ibdev, 3263 p, i, 3264 0); 3265 } 3266 } 3267 /* here, p is the slave id */ 3268 do_slave_init(ibdev, p, 0); 3269 return; 3270 3271 default: 3272 return; 3273 } 3274 3275 ibev.device = ibdev_ptr; 3276 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; 3277 3278 ib_dispatch_event(&ibev); 3279 } 3280 3281 static struct mlx4_interface mlx4_ib_interface = { 3282 .add = mlx4_ib_add, 3283 .remove = mlx4_ib_remove, 3284 .event = mlx4_ib_event, 3285 .protocol = MLX4_PROT_IB_IPV6, 3286 .flags = MLX4_INTFF_BONDING 3287 }; 3288 3289 static int __init mlx4_ib_init(void) 3290 { 3291 int err; 3292 3293 wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM); 3294 if (!wq) 3295 return -ENOMEM; 3296 3297 err = mlx4_ib_mcg_init(); 3298 if (err) 3299 goto clean_wq; 3300 3301 err = mlx4_register_interface(&mlx4_ib_interface); 3302 if (err) 3303 goto clean_mcg; 3304 3305 return 0; 3306 3307 clean_mcg: 3308 mlx4_ib_mcg_destroy(); 3309 3310 clean_wq: 3311 destroy_workqueue(wq); 3312 return err; 3313 } 3314 3315 static void __exit mlx4_ib_cleanup(void) 3316 { 3317 mlx4_unregister_interface(&mlx4_ib_interface); 3318 mlx4_ib_mcg_destroy(); 3319 destroy_workqueue(wq); 3320 } 3321 3322 module_init_order(mlx4_ib_init, SI_ORDER_SEVENTH); 3323 module_exit_order(mlx4_ib_cleanup, SI_ORDER_SEVENTH); 3324 3325 static int 3326 mlx4ib_evhand(module_t mod, int event, void *arg) 3327 { 3328 return (0); 3329 } 3330 3331 static moduledata_t mlx4ib_mod = { 3332 .name = "mlx4ib", 3333 .evhand = mlx4ib_evhand, 3334 }; 3335 3336 DECLARE_MODULE(mlx4ib, mlx4ib_mod, SI_SUB_LAST, SI_ORDER_ANY); 3337 MODULE_DEPEND(mlx4ib, mlx4, 1, 1, 1); 3338 MODULE_DEPEND(mlx4ib, ibcore, 1, 1, 1); 3339 MODULE_DEPEND(mlx4ib, linuxkpi, 1, 1, 1); 3340