1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #include <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/slab.h> 37 #include <linux/errno.h> 38 #include <linux/netdevice.h> 39 #include <linux/inetdevice.h> 40 #include <linux/rtnetlink.h> 41 #include <linux/if_vlan.h> 42 #include <net/ipv6.h> 43 #include <net/addrconf.h> 44 45 #include <rdma/ib_smi.h> 46 #include <rdma/ib_user_verbs.h> 47 #include <rdma/ib_addr.h> 48 49 #include <linux/mlx4/driver.h> 50 #include <linux/mlx4/cmd.h> 51 #include <linux/mlx4/qp.h> 52 53 #include "mlx4_ib.h" 54 #include "user.h" 55 56 #define DRV_NAME MLX4_IB_DRV_NAME 57 #define DRV_VERSION "2.2-1" 58 #define DRV_RELDATE "Feb 2014" 59 60 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF 61 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF 62 #define MLX4_IB_CARD_REV_A0 0xA0 63 64 MODULE_AUTHOR("Roland Dreier"); 65 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 66 MODULE_LICENSE("Dual BSD/GPL"); 67 MODULE_VERSION(DRV_VERSION); 68 69 int mlx4_ib_sm_guid_assign = 1; 70 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 71 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)"); 72 73 static const char mlx4_ib_version[] = 74 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 75 DRV_VERSION " (" DRV_RELDATE ")\n"; 76 77 struct update_gid_work { 78 struct work_struct work; 79 union ib_gid gids[128]; 80 struct mlx4_ib_dev *dev; 81 int port; 82 }; 83 84 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 85 86 static struct workqueue_struct *wq; 87 88 static void init_query_mad(struct ib_smp *mad) 89 { 90 mad->base_version = 1; 91 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 92 mad->class_version = 1; 93 mad->method = IB_MGMT_METHOD_GET; 94 } 95 96 static union ib_gid zgid; 97 98 static int check_flow_steering_support(struct mlx4_dev *dev) 99 { 100 int eth_num_ports = 0; 101 int ib_num_ports = 0; 102 103 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; 104 105 if (dmfs) { 106 int i; 107 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 108 eth_num_ports++; 109 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 110 ib_num_ports++; 111 dmfs &= (!ib_num_ports || 112 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && 113 (!eth_num_ports || 114 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); 115 if (ib_num_ports && mlx4_is_mfunc(dev)) { 116 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); 117 dmfs = 0; 118 } 119 } 120 return dmfs; 121 } 122 123 static int num_ib_ports(struct mlx4_dev *dev) 124 { 125 int ib_ports = 0; 126 int i; 127 128 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 129 ib_ports++; 130 131 return ib_ports; 132 } 133 134 static int mlx4_ib_query_device(struct ib_device *ibdev, 135 struct ib_device_attr *props) 136 { 137 struct mlx4_ib_dev *dev = to_mdev(ibdev); 138 struct ib_smp *in_mad = NULL; 139 struct ib_smp *out_mad = NULL; 140 int err = -ENOMEM; 141 int have_ib_ports; 142 143 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 144 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 145 if (!in_mad || !out_mad) 146 goto out; 147 148 init_query_mad(in_mad); 149 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 150 151 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 152 1, NULL, NULL, in_mad, out_mad); 153 if (err) 154 goto out; 155 156 memset(props, 0, sizeof *props); 157 158 have_ib_ports = num_ib_ports(dev->dev); 159 160 props->fw_ver = dev->dev->caps.fw_ver; 161 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 162 IB_DEVICE_PORT_ACTIVE_EVENT | 163 IB_DEVICE_SYS_IMAGE_GUID | 164 IB_DEVICE_RC_RNR_NAK_GEN | 165 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 166 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 167 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 168 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 169 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 170 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports) 171 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 172 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 173 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 174 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 175 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 176 if (dev->dev->caps.max_gso_sz && 177 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) && 178 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)) 179 props->device_cap_flags |= IB_DEVICE_UD_TSO; 180 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 181 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 182 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 183 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 184 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 185 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 186 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 187 props->device_cap_flags |= IB_DEVICE_XRC; 188 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) 189 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; 190 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 191 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) 192 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 193 else 194 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; 195 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 196 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 197 } 198 199 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 200 0xffffff; 201 props->vendor_part_id = dev->dev->persist->pdev->device; 202 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 203 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 204 205 props->max_mr_size = ~0ull; 206 props->page_size_cap = dev->dev->caps.page_size_cap; 207 props->max_qp = dev->dev->quotas.qp; 208 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 209 props->max_sge = min(dev->dev->caps.max_sq_sg, 210 dev->dev->caps.max_rq_sg); 211 props->max_cq = dev->dev->quotas.cq; 212 props->max_cqe = dev->dev->caps.max_cqes; 213 props->max_mr = dev->dev->quotas.mpt; 214 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 215 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 216 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 217 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 218 props->max_srq = dev->dev->quotas.srq; 219 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 220 props->max_srq_sge = dev->dev->caps.max_srq_sge; 221 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 222 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 223 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 224 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 225 props->masked_atomic_cap = props->atomic_cap; 226 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 227 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 228 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 229 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 230 props->max_mcast_grp; 231 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 232 233 out: 234 kfree(in_mad); 235 kfree(out_mad); 236 237 return err; 238 } 239 240 static enum rdma_link_layer 241 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 242 { 243 struct mlx4_dev *dev = to_mdev(device)->dev; 244 245 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 246 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 247 } 248 249 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 250 struct ib_port_attr *props, int netw_view) 251 { 252 struct ib_smp *in_mad = NULL; 253 struct ib_smp *out_mad = NULL; 254 int ext_active_speed; 255 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 256 int err = -ENOMEM; 257 258 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 259 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 260 if (!in_mad || !out_mad) 261 goto out; 262 263 init_query_mad(in_mad); 264 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 265 in_mad->attr_mod = cpu_to_be32(port); 266 267 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 268 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 269 270 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 271 in_mad, out_mad); 272 if (err) 273 goto out; 274 275 276 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 277 props->lmc = out_mad->data[34] & 0x7; 278 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 279 props->sm_sl = out_mad->data[36] & 0xf; 280 props->state = out_mad->data[32] & 0xf; 281 props->phys_state = out_mad->data[33] >> 4; 282 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 283 if (netw_view) 284 props->gid_tbl_len = out_mad->data[50]; 285 else 286 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 287 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 288 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 289 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 290 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 291 props->active_width = out_mad->data[31] & 0xf; 292 props->active_speed = out_mad->data[35] >> 4; 293 props->max_mtu = out_mad->data[41] & 0xf; 294 props->active_mtu = out_mad->data[36] >> 4; 295 props->subnet_timeout = out_mad->data[51] & 0x1f; 296 props->max_vl_num = out_mad->data[37] >> 4; 297 props->init_type_reply = out_mad->data[41] >> 4; 298 299 /* Check if extended speeds (EDR/FDR/...) are supported */ 300 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 301 ext_active_speed = out_mad->data[62] >> 4; 302 303 switch (ext_active_speed) { 304 case 1: 305 props->active_speed = IB_SPEED_FDR; 306 break; 307 case 2: 308 props->active_speed = IB_SPEED_EDR; 309 break; 310 } 311 } 312 313 /* If reported active speed is QDR, check if is FDR-10 */ 314 if (props->active_speed == IB_SPEED_QDR) { 315 init_query_mad(in_mad); 316 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 317 in_mad->attr_mod = cpu_to_be32(port); 318 319 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 320 NULL, NULL, in_mad, out_mad); 321 if (err) 322 goto out; 323 324 /* Checking LinkSpeedActive for FDR-10 */ 325 if (out_mad->data[15] & 0x1) 326 props->active_speed = IB_SPEED_FDR10; 327 } 328 329 /* Avoid wrong speed value returned by FW if the IB link is down. */ 330 if (props->state == IB_PORT_DOWN) 331 props->active_speed = IB_SPEED_SDR; 332 333 out: 334 kfree(in_mad); 335 kfree(out_mad); 336 return err; 337 } 338 339 static u8 state_to_phys_state(enum ib_port_state state) 340 { 341 return state == IB_PORT_ACTIVE ? 5 : 3; 342 } 343 344 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 345 struct ib_port_attr *props, int netw_view) 346 { 347 348 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 349 struct mlx4_ib_iboe *iboe = &mdev->iboe; 350 struct net_device *ndev; 351 enum ib_mtu tmp; 352 struct mlx4_cmd_mailbox *mailbox; 353 int err = 0; 354 int is_bonded = mlx4_is_bonded(mdev->dev); 355 356 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 357 if (IS_ERR(mailbox)) 358 return PTR_ERR(mailbox); 359 360 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 361 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 362 MLX4_CMD_WRAPPED); 363 if (err) 364 goto out; 365 366 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? 367 IB_WIDTH_4X : IB_WIDTH_1X; 368 props->active_speed = IB_SPEED_QDR; 369 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS; 370 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 371 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 372 props->pkey_tbl_len = 1; 373 props->max_mtu = IB_MTU_4096; 374 props->max_vl_num = 2; 375 props->state = IB_PORT_DOWN; 376 props->phys_state = state_to_phys_state(props->state); 377 props->active_mtu = IB_MTU_256; 378 if (is_bonded) 379 rtnl_lock(); /* required to get upper dev */ 380 spin_lock_bh(&iboe->lock); 381 ndev = iboe->netdevs[port - 1]; 382 if (ndev && is_bonded) 383 ndev = netdev_master_upper_dev_get(ndev); 384 if (!ndev) 385 goto out_unlock; 386 387 tmp = iboe_get_mtu(ndev->mtu); 388 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 389 390 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 391 IB_PORT_ACTIVE : IB_PORT_DOWN; 392 props->phys_state = state_to_phys_state(props->state); 393 out_unlock: 394 spin_unlock_bh(&iboe->lock); 395 if (is_bonded) 396 rtnl_unlock(); 397 out: 398 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 399 return err; 400 } 401 402 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 403 struct ib_port_attr *props, int netw_view) 404 { 405 int err; 406 407 memset(props, 0, sizeof *props); 408 409 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 410 ib_link_query_port(ibdev, port, props, netw_view) : 411 eth_link_query_port(ibdev, port, props, netw_view); 412 413 return err; 414 } 415 416 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 417 struct ib_port_attr *props) 418 { 419 /* returns host view */ 420 return __mlx4_ib_query_port(ibdev, port, props, 0); 421 } 422 423 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 424 union ib_gid *gid, int netw_view) 425 { 426 struct ib_smp *in_mad = NULL; 427 struct ib_smp *out_mad = NULL; 428 int err = -ENOMEM; 429 struct mlx4_ib_dev *dev = to_mdev(ibdev); 430 int clear = 0; 431 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 432 433 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 434 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 435 if (!in_mad || !out_mad) 436 goto out; 437 438 init_query_mad(in_mad); 439 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 440 in_mad->attr_mod = cpu_to_be32(port); 441 442 if (mlx4_is_mfunc(dev->dev) && netw_view) 443 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 444 445 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 446 if (err) 447 goto out; 448 449 memcpy(gid->raw, out_mad->data + 8, 8); 450 451 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 452 if (index) { 453 /* For any index > 0, return the null guid */ 454 err = 0; 455 clear = 1; 456 goto out; 457 } 458 } 459 460 init_query_mad(in_mad); 461 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 462 in_mad->attr_mod = cpu_to_be32(index / 8); 463 464 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 465 NULL, NULL, in_mad, out_mad); 466 if (err) 467 goto out; 468 469 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 470 471 out: 472 if (clear) 473 memset(gid->raw + 8, 0, 8); 474 kfree(in_mad); 475 kfree(out_mad); 476 return err; 477 } 478 479 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, 480 union ib_gid *gid) 481 { 482 struct mlx4_ib_dev *dev = to_mdev(ibdev); 483 484 *gid = dev->iboe.gid_table[port - 1][index]; 485 486 return 0; 487 } 488 489 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 490 union ib_gid *gid) 491 { 492 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 493 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 494 else 495 return iboe_query_gid(ibdev, port, index, gid); 496 } 497 498 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 499 u16 *pkey, int netw_view) 500 { 501 struct ib_smp *in_mad = NULL; 502 struct ib_smp *out_mad = NULL; 503 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 504 int err = -ENOMEM; 505 506 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 507 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 508 if (!in_mad || !out_mad) 509 goto out; 510 511 init_query_mad(in_mad); 512 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 513 in_mad->attr_mod = cpu_to_be32(index / 32); 514 515 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 516 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 517 518 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 519 in_mad, out_mad); 520 if (err) 521 goto out; 522 523 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 524 525 out: 526 kfree(in_mad); 527 kfree(out_mad); 528 return err; 529 } 530 531 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 532 { 533 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 534 } 535 536 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 537 struct ib_device_modify *props) 538 { 539 struct mlx4_cmd_mailbox *mailbox; 540 unsigned long flags; 541 542 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 543 return -EOPNOTSUPP; 544 545 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 546 return 0; 547 548 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 549 return -EOPNOTSUPP; 550 551 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 552 memcpy(ibdev->node_desc, props->node_desc, 64); 553 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 554 555 /* 556 * If possible, pass node desc to FW, so it can generate 557 * a 144 trap. If cmd fails, just ignore. 558 */ 559 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 560 if (IS_ERR(mailbox)) 561 return 0; 562 563 memcpy(mailbox->buf, props->node_desc, 64); 564 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 565 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 566 567 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 568 569 return 0; 570 } 571 572 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 573 u32 cap_mask) 574 { 575 struct mlx4_cmd_mailbox *mailbox; 576 int err; 577 578 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 579 if (IS_ERR(mailbox)) 580 return PTR_ERR(mailbox); 581 582 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 583 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 584 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 585 } else { 586 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 587 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 588 } 589 590 err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT, 591 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); 592 593 mlx4_free_cmd_mailbox(dev->dev, mailbox); 594 return err; 595 } 596 597 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 598 struct ib_port_modify *props) 599 { 600 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 601 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 602 struct ib_port_attr attr; 603 u32 cap_mask; 604 int err; 605 606 /* return OK if this is RoCE. CM calls ib_modify_port() regardless 607 * of whether port link layer is ETH or IB. For ETH ports, qkey 608 * violations and port capabilities are not meaningful. 609 */ 610 if (is_eth) 611 return 0; 612 613 mutex_lock(&mdev->cap_mask_mutex); 614 615 err = mlx4_ib_query_port(ibdev, port, &attr); 616 if (err) 617 goto out; 618 619 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 620 ~props->clr_port_cap_mask; 621 622 err = mlx4_ib_SET_PORT(mdev, port, 623 !!(mask & IB_PORT_RESET_QKEY_CNTR), 624 cap_mask); 625 626 out: 627 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 628 return err; 629 } 630 631 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 632 struct ib_udata *udata) 633 { 634 struct mlx4_ib_dev *dev = to_mdev(ibdev); 635 struct mlx4_ib_ucontext *context; 636 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 637 struct mlx4_ib_alloc_ucontext_resp resp; 638 int err; 639 640 if (!dev->ib_active) 641 return ERR_PTR(-EAGAIN); 642 643 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 644 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 645 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 646 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 647 } else { 648 resp.dev_caps = dev->dev->caps.userspace_caps; 649 resp.qp_tab_size = dev->dev->caps.num_qps; 650 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 651 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 652 resp.cqe_size = dev->dev->caps.cqe_size; 653 } 654 655 context = kmalloc(sizeof *context, GFP_KERNEL); 656 if (!context) 657 return ERR_PTR(-ENOMEM); 658 659 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 660 if (err) { 661 kfree(context); 662 return ERR_PTR(err); 663 } 664 665 INIT_LIST_HEAD(&context->db_page_list); 666 mutex_init(&context->db_page_mutex); 667 668 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 669 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 670 else 671 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 672 673 if (err) { 674 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 675 kfree(context); 676 return ERR_PTR(-EFAULT); 677 } 678 679 return &context->ibucontext; 680 } 681 682 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 683 { 684 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 685 686 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 687 kfree(context); 688 689 return 0; 690 } 691 692 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 693 { 694 struct mlx4_ib_dev *dev = to_mdev(context->device); 695 696 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 697 return -EINVAL; 698 699 if (vma->vm_pgoff == 0) { 700 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 701 702 if (io_remap_pfn_range(vma, vma->vm_start, 703 to_mucontext(context)->uar.pfn, 704 PAGE_SIZE, vma->vm_page_prot)) 705 return -EAGAIN; 706 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 707 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 708 709 if (io_remap_pfn_range(vma, vma->vm_start, 710 to_mucontext(context)->uar.pfn + 711 dev->dev->caps.num_uars, 712 PAGE_SIZE, vma->vm_page_prot)) 713 return -EAGAIN; 714 } else 715 return -EINVAL; 716 717 return 0; 718 } 719 720 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 721 struct ib_ucontext *context, 722 struct ib_udata *udata) 723 { 724 struct mlx4_ib_pd *pd; 725 int err; 726 727 pd = kmalloc(sizeof *pd, GFP_KERNEL); 728 if (!pd) 729 return ERR_PTR(-ENOMEM); 730 731 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 732 if (err) { 733 kfree(pd); 734 return ERR_PTR(err); 735 } 736 737 if (context) 738 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 739 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 740 kfree(pd); 741 return ERR_PTR(-EFAULT); 742 } 743 744 return &pd->ibpd; 745 } 746 747 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 748 { 749 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 750 kfree(pd); 751 752 return 0; 753 } 754 755 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 756 struct ib_ucontext *context, 757 struct ib_udata *udata) 758 { 759 struct mlx4_ib_xrcd *xrcd; 760 int err; 761 762 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 763 return ERR_PTR(-ENOSYS); 764 765 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 766 if (!xrcd) 767 return ERR_PTR(-ENOMEM); 768 769 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 770 if (err) 771 goto err1; 772 773 xrcd->pd = ib_alloc_pd(ibdev); 774 if (IS_ERR(xrcd->pd)) { 775 err = PTR_ERR(xrcd->pd); 776 goto err2; 777 } 778 779 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 780 if (IS_ERR(xrcd->cq)) { 781 err = PTR_ERR(xrcd->cq); 782 goto err3; 783 } 784 785 return &xrcd->ibxrcd; 786 787 err3: 788 ib_dealloc_pd(xrcd->pd); 789 err2: 790 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 791 err1: 792 kfree(xrcd); 793 return ERR_PTR(err); 794 } 795 796 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 797 { 798 ib_destroy_cq(to_mxrcd(xrcd)->cq); 799 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 800 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 801 kfree(xrcd); 802 803 return 0; 804 } 805 806 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 807 { 808 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 809 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 810 struct mlx4_ib_gid_entry *ge; 811 812 ge = kzalloc(sizeof *ge, GFP_KERNEL); 813 if (!ge) 814 return -ENOMEM; 815 816 ge->gid = *gid; 817 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 818 ge->port = mqp->port; 819 ge->added = 1; 820 } 821 822 mutex_lock(&mqp->mutex); 823 list_add_tail(&ge->list, &mqp->gid_list); 824 mutex_unlock(&mqp->mutex); 825 826 return 0; 827 } 828 829 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 830 union ib_gid *gid) 831 { 832 struct net_device *ndev; 833 int ret = 0; 834 835 if (!mqp->port) 836 return 0; 837 838 spin_lock_bh(&mdev->iboe.lock); 839 ndev = mdev->iboe.netdevs[mqp->port - 1]; 840 if (ndev) 841 dev_hold(ndev); 842 spin_unlock_bh(&mdev->iboe.lock); 843 844 if (ndev) { 845 ret = 1; 846 dev_put(ndev); 847 } 848 849 return ret; 850 } 851 852 struct mlx4_ib_steering { 853 struct list_head list; 854 struct mlx4_flow_reg_id reg_id; 855 union ib_gid gid; 856 }; 857 858 static int parse_flow_attr(struct mlx4_dev *dev, 859 u32 qp_num, 860 union ib_flow_spec *ib_spec, 861 struct _rule_hw *mlx4_spec) 862 { 863 enum mlx4_net_trans_rule_id type; 864 865 switch (ib_spec->type) { 866 case IB_FLOW_SPEC_ETH: 867 type = MLX4_NET_TRANS_RULE_ID_ETH; 868 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 869 ETH_ALEN); 870 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 871 ETH_ALEN); 872 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 873 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 874 break; 875 case IB_FLOW_SPEC_IB: 876 type = MLX4_NET_TRANS_RULE_ID_IB; 877 mlx4_spec->ib.l3_qpn = 878 cpu_to_be32(qp_num); 879 mlx4_spec->ib.qpn_mask = 880 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 881 break; 882 883 884 case IB_FLOW_SPEC_IPV4: 885 type = MLX4_NET_TRANS_RULE_ID_IPV4; 886 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 887 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 888 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 889 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 890 break; 891 892 case IB_FLOW_SPEC_TCP: 893 case IB_FLOW_SPEC_UDP: 894 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 895 MLX4_NET_TRANS_RULE_ID_TCP : 896 MLX4_NET_TRANS_RULE_ID_UDP; 897 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 898 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 899 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 900 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 901 break; 902 903 default: 904 return -EINVAL; 905 } 906 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 907 mlx4_hw_rule_sz(dev, type) < 0) 908 return -EINVAL; 909 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 910 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 911 return mlx4_hw_rule_sz(dev, type); 912 } 913 914 struct default_rules { 915 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 916 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 917 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 918 __u8 link_layer; 919 }; 920 static const struct default_rules default_table[] = { 921 { 922 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 923 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 924 .rules_create_list = {IB_FLOW_SPEC_IB}, 925 .link_layer = IB_LINK_LAYER_INFINIBAND 926 } 927 }; 928 929 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 930 struct ib_flow_attr *flow_attr) 931 { 932 int i, j, k; 933 void *ib_flow; 934 const struct default_rules *pdefault_rules = default_table; 935 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 936 937 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 938 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 939 memset(&field_types, 0, sizeof(field_types)); 940 941 if (link_layer != pdefault_rules->link_layer) 942 continue; 943 944 ib_flow = flow_attr + 1; 945 /* we assume the specs are sorted */ 946 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 947 j < flow_attr->num_of_specs; k++) { 948 union ib_flow_spec *current_flow = 949 (union ib_flow_spec *)ib_flow; 950 951 /* same layer but different type */ 952 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 953 (pdefault_rules->mandatory_fields[k] & 954 IB_FLOW_SPEC_LAYER_MASK)) && 955 (current_flow->type != 956 pdefault_rules->mandatory_fields[k])) 957 goto out; 958 959 /* same layer, try match next one */ 960 if (current_flow->type == 961 pdefault_rules->mandatory_fields[k]) { 962 j++; 963 ib_flow += 964 ((union ib_flow_spec *)ib_flow)->size; 965 } 966 } 967 968 ib_flow = flow_attr + 1; 969 for (j = 0; j < flow_attr->num_of_specs; 970 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 971 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 972 /* same layer and same type */ 973 if (((union ib_flow_spec *)ib_flow)->type == 974 pdefault_rules->mandatory_not_fields[k]) 975 goto out; 976 977 return i; 978 } 979 out: 980 return -1; 981 } 982 983 static int __mlx4_ib_create_default_rules( 984 struct mlx4_ib_dev *mdev, 985 struct ib_qp *qp, 986 const struct default_rules *pdefault_rules, 987 struct _rule_hw *mlx4_spec) { 988 int size = 0; 989 int i; 990 991 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 992 int ret; 993 union ib_flow_spec ib_spec; 994 switch (pdefault_rules->rules_create_list[i]) { 995 case 0: 996 /* no rule */ 997 continue; 998 case IB_FLOW_SPEC_IB: 999 ib_spec.type = IB_FLOW_SPEC_IB; 1000 ib_spec.size = sizeof(struct ib_flow_spec_ib); 1001 1002 break; 1003 default: 1004 /* invalid rule */ 1005 return -EINVAL; 1006 } 1007 /* We must put empty rule, qpn is being ignored */ 1008 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1009 mlx4_spec); 1010 if (ret < 0) { 1011 pr_info("invalid parsing\n"); 1012 return -EINVAL; 1013 } 1014 1015 mlx4_spec = (void *)mlx4_spec + ret; 1016 size += ret; 1017 } 1018 return size; 1019 } 1020 1021 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1022 int domain, 1023 enum mlx4_net_trans_promisc_mode flow_type, 1024 u64 *reg_id) 1025 { 1026 int ret, i; 1027 int size = 0; 1028 void *ib_flow; 1029 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1030 struct mlx4_cmd_mailbox *mailbox; 1031 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1032 int default_flow; 1033 1034 static const u16 __mlx4_domain[] = { 1035 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 1036 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 1037 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 1038 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 1039 }; 1040 1041 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1042 pr_err("Invalid priority value %d\n", flow_attr->priority); 1043 return -EINVAL; 1044 } 1045 1046 if (domain >= IB_FLOW_DOMAIN_NUM) { 1047 pr_err("Invalid domain value %d\n", domain); 1048 return -EINVAL; 1049 } 1050 1051 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1052 return -EINVAL; 1053 1054 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1055 if (IS_ERR(mailbox)) 1056 return PTR_ERR(mailbox); 1057 ctrl = mailbox->buf; 1058 1059 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 1060 flow_attr->priority); 1061 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1062 ctrl->port = flow_attr->port; 1063 ctrl->qpn = cpu_to_be32(qp->qp_num); 1064 1065 ib_flow = flow_attr + 1; 1066 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1067 /* Add default flows */ 1068 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1069 if (default_flow >= 0) { 1070 ret = __mlx4_ib_create_default_rules( 1071 mdev, qp, default_table + default_flow, 1072 mailbox->buf + size); 1073 if (ret < 0) { 1074 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1075 return -EINVAL; 1076 } 1077 size += ret; 1078 } 1079 for (i = 0; i < flow_attr->num_of_specs; i++) { 1080 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1081 mailbox->buf + size); 1082 if (ret < 0) { 1083 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1084 return -EINVAL; 1085 } 1086 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1087 size += ret; 1088 } 1089 1090 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1091 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1092 MLX4_CMD_NATIVE); 1093 if (ret == -ENOMEM) 1094 pr_err("mcg table is full. Fail to register network rule.\n"); 1095 else if (ret == -ENXIO) 1096 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1097 else if (ret) 1098 pr_err("Invalid argumant. Fail to register network rule.\n"); 1099 1100 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1101 return ret; 1102 } 1103 1104 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1105 { 1106 int err; 1107 err = mlx4_cmd(dev, reg_id, 0, 0, 1108 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1109 MLX4_CMD_NATIVE); 1110 if (err) 1111 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1112 reg_id); 1113 return err; 1114 } 1115 1116 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1117 u64 *reg_id) 1118 { 1119 void *ib_flow; 1120 union ib_flow_spec *ib_spec; 1121 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1122 int err = 0; 1123 1124 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 1125 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 1126 return 0; /* do nothing */ 1127 1128 ib_flow = flow_attr + 1; 1129 ib_spec = (union ib_flow_spec *)ib_flow; 1130 1131 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1132 return 0; /* do nothing */ 1133 1134 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1135 flow_attr->port, qp->qp_num, 1136 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1137 reg_id); 1138 return err; 1139 } 1140 1141 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1142 struct ib_flow_attr *flow_attr, 1143 int domain) 1144 { 1145 int err = 0, i = 0, j = 0; 1146 struct mlx4_ib_flow *mflow; 1147 enum mlx4_net_trans_promisc_mode type[2]; 1148 struct mlx4_dev *dev = (to_mdev(qp->device))->dev; 1149 int is_bonded = mlx4_is_bonded(dev); 1150 1151 memset(type, 0, sizeof(type)); 1152 1153 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1154 if (!mflow) { 1155 err = -ENOMEM; 1156 goto err_free; 1157 } 1158 1159 switch (flow_attr->type) { 1160 case IB_FLOW_ATTR_NORMAL: 1161 type[0] = MLX4_FS_REGULAR; 1162 break; 1163 1164 case IB_FLOW_ATTR_ALL_DEFAULT: 1165 type[0] = MLX4_FS_ALL_DEFAULT; 1166 break; 1167 1168 case IB_FLOW_ATTR_MC_DEFAULT: 1169 type[0] = MLX4_FS_MC_DEFAULT; 1170 break; 1171 1172 case IB_FLOW_ATTR_SNIFFER: 1173 type[0] = MLX4_FS_UC_SNIFFER; 1174 type[1] = MLX4_FS_MC_SNIFFER; 1175 break; 1176 1177 default: 1178 err = -EINVAL; 1179 goto err_free; 1180 } 1181 1182 while (i < ARRAY_SIZE(type) && type[i]) { 1183 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 1184 &mflow->reg_id[i].id); 1185 if (err) 1186 goto err_create_flow; 1187 i++; 1188 if (is_bonded) { 1189 /* Application always sees one port so the mirror rule 1190 * must be on port #2 1191 */ 1192 flow_attr->port = 2; 1193 err = __mlx4_ib_create_flow(qp, flow_attr, 1194 domain, type[j], 1195 &mflow->reg_id[j].mirror); 1196 flow_attr->port = 1; 1197 if (err) 1198 goto err_create_flow; 1199 j++; 1200 } 1201 1202 } 1203 1204 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1205 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1206 &mflow->reg_id[i].id); 1207 if (err) 1208 goto err_create_flow; 1209 i++; 1210 if (is_bonded) { 1211 flow_attr->port = 2; 1212 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1213 &mflow->reg_id[j].mirror); 1214 flow_attr->port = 1; 1215 if (err) 1216 goto err_create_flow; 1217 j++; 1218 } 1219 /* function to create mirror rule */ 1220 } 1221 1222 return &mflow->ibflow; 1223 1224 err_create_flow: 1225 while (i) { 1226 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1227 mflow->reg_id[i].id); 1228 i--; 1229 } 1230 1231 while (j) { 1232 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1233 mflow->reg_id[j].mirror); 1234 j--; 1235 } 1236 err_free: 1237 kfree(mflow); 1238 return ERR_PTR(err); 1239 } 1240 1241 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1242 { 1243 int err, ret = 0; 1244 int i = 0; 1245 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1246 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1247 1248 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { 1249 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); 1250 if (err) 1251 ret = err; 1252 if (mflow->reg_id[i].mirror) { 1253 err = __mlx4_ib_destroy_flow(mdev->dev, 1254 mflow->reg_id[i].mirror); 1255 if (err) 1256 ret = err; 1257 } 1258 i++; 1259 } 1260 1261 kfree(mflow); 1262 return ret; 1263 } 1264 1265 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1266 { 1267 int err; 1268 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1269 struct mlx4_dev *dev = mdev->dev; 1270 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1271 struct mlx4_ib_steering *ib_steering = NULL; 1272 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1273 struct mlx4_flow_reg_id reg_id; 1274 1275 if (mdev->dev->caps.steering_mode == 1276 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1277 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1278 if (!ib_steering) 1279 return -ENOMEM; 1280 } 1281 1282 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1283 !!(mqp->flags & 1284 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1285 prot, ®_id.id); 1286 if (err) { 1287 pr_err("multicast attach op failed, err %d\n", err); 1288 goto err_malloc; 1289 } 1290 1291 reg_id.mirror = 0; 1292 if (mlx4_is_bonded(dev)) { 1293 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 1294 (mqp->port == 1) ? 2 : 1, 1295 !!(mqp->flags & 1296 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1297 prot, ®_id.mirror); 1298 if (err) 1299 goto err_add; 1300 } 1301 1302 err = add_gid_entry(ibqp, gid); 1303 if (err) 1304 goto err_add; 1305 1306 if (ib_steering) { 1307 memcpy(ib_steering->gid.raw, gid->raw, 16); 1308 ib_steering->reg_id = reg_id; 1309 mutex_lock(&mqp->mutex); 1310 list_add(&ib_steering->list, &mqp->steering_rules); 1311 mutex_unlock(&mqp->mutex); 1312 } 1313 return 0; 1314 1315 err_add: 1316 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1317 prot, reg_id.id); 1318 if (reg_id.mirror) 1319 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1320 prot, reg_id.mirror); 1321 err_malloc: 1322 kfree(ib_steering); 1323 1324 return err; 1325 } 1326 1327 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1328 { 1329 struct mlx4_ib_gid_entry *ge; 1330 struct mlx4_ib_gid_entry *tmp; 1331 struct mlx4_ib_gid_entry *ret = NULL; 1332 1333 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1334 if (!memcmp(raw, ge->gid.raw, 16)) { 1335 ret = ge; 1336 break; 1337 } 1338 } 1339 1340 return ret; 1341 } 1342 1343 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1344 { 1345 int err; 1346 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1347 struct mlx4_dev *dev = mdev->dev; 1348 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1349 struct net_device *ndev; 1350 struct mlx4_ib_gid_entry *ge; 1351 struct mlx4_flow_reg_id reg_id = {0, 0}; 1352 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1353 1354 if (mdev->dev->caps.steering_mode == 1355 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1356 struct mlx4_ib_steering *ib_steering; 1357 1358 mutex_lock(&mqp->mutex); 1359 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1360 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1361 list_del(&ib_steering->list); 1362 break; 1363 } 1364 } 1365 mutex_unlock(&mqp->mutex); 1366 if (&ib_steering->list == &mqp->steering_rules) { 1367 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1368 return -EINVAL; 1369 } 1370 reg_id = ib_steering->reg_id; 1371 kfree(ib_steering); 1372 } 1373 1374 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1375 prot, reg_id.id); 1376 if (err) 1377 return err; 1378 1379 if (mlx4_is_bonded(dev)) { 1380 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1381 prot, reg_id.mirror); 1382 if (err) 1383 return err; 1384 } 1385 1386 mutex_lock(&mqp->mutex); 1387 ge = find_gid_entry(mqp, gid->raw); 1388 if (ge) { 1389 spin_lock_bh(&mdev->iboe.lock); 1390 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1391 if (ndev) 1392 dev_hold(ndev); 1393 spin_unlock_bh(&mdev->iboe.lock); 1394 if (ndev) 1395 dev_put(ndev); 1396 list_del(&ge->list); 1397 kfree(ge); 1398 } else 1399 pr_warn("could not find mgid entry\n"); 1400 1401 mutex_unlock(&mqp->mutex); 1402 1403 return 0; 1404 } 1405 1406 static int init_node_data(struct mlx4_ib_dev *dev) 1407 { 1408 struct ib_smp *in_mad = NULL; 1409 struct ib_smp *out_mad = NULL; 1410 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1411 int err = -ENOMEM; 1412 1413 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1414 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1415 if (!in_mad || !out_mad) 1416 goto out; 1417 1418 init_query_mad(in_mad); 1419 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1420 if (mlx4_is_master(dev->dev)) 1421 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1422 1423 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1424 if (err) 1425 goto out; 1426 1427 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1428 1429 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1430 1431 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1432 if (err) 1433 goto out; 1434 1435 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1436 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1437 1438 out: 1439 kfree(in_mad); 1440 kfree(out_mad); 1441 return err; 1442 } 1443 1444 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1445 char *buf) 1446 { 1447 struct mlx4_ib_dev *dev = 1448 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1449 return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device); 1450 } 1451 1452 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1453 char *buf) 1454 { 1455 struct mlx4_ib_dev *dev = 1456 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1457 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 1458 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 1459 (int) dev->dev->caps.fw_ver & 0xffff); 1460 } 1461 1462 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1463 char *buf) 1464 { 1465 struct mlx4_ib_dev *dev = 1466 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1467 return sprintf(buf, "%x\n", dev->dev->rev_id); 1468 } 1469 1470 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1471 char *buf) 1472 { 1473 struct mlx4_ib_dev *dev = 1474 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1475 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 1476 dev->dev->board_id); 1477 } 1478 1479 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1480 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1481 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1482 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1483 1484 static struct device_attribute *mlx4_class_attributes[] = { 1485 &dev_attr_hw_rev, 1486 &dev_attr_fw_ver, 1487 &dev_attr_hca_type, 1488 &dev_attr_board_id 1489 }; 1490 1491 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, 1492 struct net_device *dev) 1493 { 1494 memcpy(eui, dev->dev_addr, 3); 1495 memcpy(eui + 5, dev->dev_addr + 3, 3); 1496 if (vlan_id < 0x1000) { 1497 eui[3] = vlan_id >> 8; 1498 eui[4] = vlan_id & 0xff; 1499 } else { 1500 eui[3] = 0xff; 1501 eui[4] = 0xfe; 1502 } 1503 eui[0] ^= 2; 1504 } 1505 1506 static void update_gids_task(struct work_struct *work) 1507 { 1508 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 1509 struct mlx4_cmd_mailbox *mailbox; 1510 union ib_gid *gids; 1511 int err; 1512 struct mlx4_dev *dev = gw->dev->dev; 1513 int is_bonded = mlx4_is_bonded(dev); 1514 1515 if (!gw->dev->ib_active) 1516 return; 1517 1518 mailbox = mlx4_alloc_cmd_mailbox(dev); 1519 if (IS_ERR(mailbox)) { 1520 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); 1521 return; 1522 } 1523 1524 gids = mailbox->buf; 1525 memcpy(gids, gw->gids, sizeof gw->gids); 1526 1527 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1528 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1529 MLX4_CMD_WRAPPED); 1530 if (err) 1531 pr_warn("set port command failed\n"); 1532 else 1533 if ((gw->port == 1) || !is_bonded) 1534 mlx4_ib_dispatch_event(gw->dev, 1535 is_bonded ? 1 : gw->port, 1536 IB_EVENT_GID_CHANGE); 1537 1538 mlx4_free_cmd_mailbox(dev, mailbox); 1539 kfree(gw); 1540 } 1541 1542 static void reset_gids_task(struct work_struct *work) 1543 { 1544 struct update_gid_work *gw = 1545 container_of(work, struct update_gid_work, work); 1546 struct mlx4_cmd_mailbox *mailbox; 1547 union ib_gid *gids; 1548 int err; 1549 struct mlx4_dev *dev = gw->dev->dev; 1550 1551 if (!gw->dev->ib_active) 1552 return; 1553 1554 mailbox = mlx4_alloc_cmd_mailbox(dev); 1555 if (IS_ERR(mailbox)) { 1556 pr_warn("reset gid table failed\n"); 1557 goto free; 1558 } 1559 1560 gids = mailbox->buf; 1561 memcpy(gids, gw->gids, sizeof(gw->gids)); 1562 1563 if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) == 1564 IB_LINK_LAYER_ETHERNET) { 1565 err = mlx4_cmd(dev, mailbox->dma, 1566 MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1567 1, MLX4_CMD_SET_PORT, 1568 MLX4_CMD_TIME_CLASS_B, 1569 MLX4_CMD_WRAPPED); 1570 if (err) 1571 pr_warn(KERN_WARNING 1572 "set port %d command failed\n", gw->port); 1573 } 1574 1575 mlx4_free_cmd_mailbox(dev, mailbox); 1576 free: 1577 kfree(gw); 1578 } 1579 1580 static int update_gid_table(struct mlx4_ib_dev *dev, int port, 1581 union ib_gid *gid, int clear, 1582 int default_gid) 1583 { 1584 struct update_gid_work *work; 1585 int i; 1586 int need_update = 0; 1587 int free = -1; 1588 int found = -1; 1589 int max_gids; 1590 1591 if (default_gid) { 1592 free = 0; 1593 } else { 1594 max_gids = dev->dev->caps.gid_table_len[port]; 1595 for (i = 1; i < max_gids; ++i) { 1596 if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid, 1597 sizeof(*gid))) 1598 found = i; 1599 1600 if (clear) { 1601 if (found >= 0) { 1602 need_update = 1; 1603 dev->iboe.gid_table[port - 1][found] = 1604 zgid; 1605 break; 1606 } 1607 } else { 1608 if (found >= 0) 1609 break; 1610 1611 if (free < 0 && 1612 !memcmp(&dev->iboe.gid_table[port - 1][i], 1613 &zgid, sizeof(*gid))) 1614 free = i; 1615 } 1616 } 1617 } 1618 1619 if (found == -1 && !clear && free >= 0) { 1620 dev->iboe.gid_table[port - 1][free] = *gid; 1621 need_update = 1; 1622 } 1623 1624 if (!need_update) 1625 return 0; 1626 1627 work = kzalloc(sizeof(*work), GFP_ATOMIC); 1628 if (!work) 1629 return -ENOMEM; 1630 1631 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids)); 1632 INIT_WORK(&work->work, update_gids_task); 1633 work->port = port; 1634 work->dev = dev; 1635 queue_work(wq, &work->work); 1636 1637 return 0; 1638 } 1639 1640 static void mlx4_make_default_gid(struct net_device *dev, union ib_gid *gid) 1641 { 1642 gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 1643 mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev); 1644 } 1645 1646 1647 static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port) 1648 { 1649 struct update_gid_work *work; 1650 1651 work = kzalloc(sizeof(*work), GFP_ATOMIC); 1652 if (!work) 1653 return -ENOMEM; 1654 1655 memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids)); 1656 memset(work->gids, 0, sizeof(work->gids)); 1657 INIT_WORK(&work->work, reset_gids_task); 1658 work->dev = dev; 1659 work->port = port; 1660 queue_work(wq, &work->work); 1661 return 0; 1662 } 1663 1664 static int mlx4_ib_addr_event(int event, struct net_device *event_netdev, 1665 struct mlx4_ib_dev *ibdev, union ib_gid *gid) 1666 { 1667 struct mlx4_ib_iboe *iboe; 1668 int port = 0; 1669 struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ? 1670 rdma_vlan_dev_real_dev(event_netdev) : 1671 event_netdev; 1672 union ib_gid default_gid; 1673 1674 mlx4_make_default_gid(real_dev, &default_gid); 1675 1676 if (!memcmp(gid, &default_gid, sizeof(*gid))) 1677 return 0; 1678 1679 if (event != NETDEV_DOWN && event != NETDEV_UP) 1680 return 0; 1681 1682 if ((real_dev != event_netdev) && 1683 (event == NETDEV_DOWN) && 1684 rdma_link_local_addr((struct in6_addr *)gid)) 1685 return 0; 1686 1687 iboe = &ibdev->iboe; 1688 spin_lock_bh(&iboe->lock); 1689 1690 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) 1691 if ((netif_is_bond_master(real_dev) && 1692 (real_dev == iboe->masters[port - 1])) || 1693 (!netif_is_bond_master(real_dev) && 1694 (real_dev == iboe->netdevs[port - 1]))) 1695 update_gid_table(ibdev, port, gid, 1696 event == NETDEV_DOWN, 0); 1697 1698 spin_unlock_bh(&iboe->lock); 1699 return 0; 1700 1701 } 1702 1703 static u8 mlx4_ib_get_dev_port(struct net_device *dev, 1704 struct mlx4_ib_dev *ibdev) 1705 { 1706 u8 port = 0; 1707 struct mlx4_ib_iboe *iboe; 1708 struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ? 1709 rdma_vlan_dev_real_dev(dev) : dev; 1710 1711 iboe = &ibdev->iboe; 1712 1713 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) 1714 if ((netif_is_bond_master(real_dev) && 1715 (real_dev == iboe->masters[port - 1])) || 1716 (!netif_is_bond_master(real_dev) && 1717 (real_dev == iboe->netdevs[port - 1]))) 1718 break; 1719 1720 if ((port == 0) || (port > ibdev->dev->caps.num_ports)) 1721 return 0; 1722 else 1723 return port; 1724 } 1725 1726 static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event, 1727 void *ptr) 1728 { 1729 struct mlx4_ib_dev *ibdev; 1730 struct in_ifaddr *ifa = ptr; 1731 union ib_gid gid; 1732 struct net_device *event_netdev = ifa->ifa_dev->dev; 1733 1734 ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); 1735 1736 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet); 1737 1738 mlx4_ib_addr_event(event, event_netdev, ibdev, &gid); 1739 return NOTIFY_DONE; 1740 } 1741 1742 #if IS_ENABLED(CONFIG_IPV6) 1743 static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event, 1744 void *ptr) 1745 { 1746 struct mlx4_ib_dev *ibdev; 1747 struct inet6_ifaddr *ifa = ptr; 1748 union ib_gid *gid = (union ib_gid *)&ifa->addr; 1749 struct net_device *event_netdev = ifa->idev->dev; 1750 1751 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6); 1752 1753 mlx4_ib_addr_event(event, event_netdev, ibdev, gid); 1754 return NOTIFY_DONE; 1755 } 1756 #endif 1757 1758 #define MLX4_IB_INVALID_MAC ((u64)-1) 1759 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 1760 struct net_device *dev, 1761 int port) 1762 { 1763 u64 new_smac = 0; 1764 u64 release_mac = MLX4_IB_INVALID_MAC; 1765 struct mlx4_ib_qp *qp; 1766 1767 read_lock(&dev_base_lock); 1768 new_smac = mlx4_mac_to_u64(dev->dev_addr); 1769 read_unlock(&dev_base_lock); 1770 1771 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); 1772 1773 /* no need for update QP1 and mac registration in non-SRIOV */ 1774 if (!mlx4_is_mfunc(ibdev->dev)) 1775 return; 1776 1777 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 1778 qp = ibdev->qp1_proxy[port - 1]; 1779 if (qp) { 1780 int new_smac_index; 1781 u64 old_smac; 1782 struct mlx4_update_qp_params update_params; 1783 1784 mutex_lock(&qp->mutex); 1785 old_smac = qp->pri.smac; 1786 if (new_smac == old_smac) 1787 goto unlock; 1788 1789 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 1790 1791 if (new_smac_index < 0) 1792 goto unlock; 1793 1794 update_params.smac_index = new_smac_index; 1795 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, 1796 &update_params)) { 1797 release_mac = new_smac; 1798 goto unlock; 1799 } 1800 /* if old port was zero, no mac was yet registered for this QP */ 1801 if (qp->pri.smac_port) 1802 release_mac = old_smac; 1803 qp->pri.smac = new_smac; 1804 qp->pri.smac_port = port; 1805 qp->pri.smac_index = new_smac_index; 1806 } 1807 1808 unlock: 1809 if (release_mac != MLX4_IB_INVALID_MAC) 1810 mlx4_unregister_mac(ibdev->dev, port, release_mac); 1811 if (qp) 1812 mutex_unlock(&qp->mutex); 1813 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 1814 } 1815 1816 static void mlx4_ib_get_dev_addr(struct net_device *dev, 1817 struct mlx4_ib_dev *ibdev, u8 port) 1818 { 1819 struct in_device *in_dev; 1820 #if IS_ENABLED(CONFIG_IPV6) 1821 struct inet6_dev *in6_dev; 1822 union ib_gid *pgid; 1823 struct inet6_ifaddr *ifp; 1824 union ib_gid default_gid; 1825 #endif 1826 union ib_gid gid; 1827 1828 1829 if ((port == 0) || (port > ibdev->dev->caps.num_ports)) 1830 return; 1831 1832 /* IPv4 gids */ 1833 in_dev = in_dev_get(dev); 1834 if (in_dev) { 1835 for_ifa(in_dev) { 1836 /*ifa->ifa_address;*/ 1837 ipv6_addr_set_v4mapped(ifa->ifa_address, 1838 (struct in6_addr *)&gid); 1839 update_gid_table(ibdev, port, &gid, 0, 0); 1840 } 1841 endfor_ifa(in_dev); 1842 in_dev_put(in_dev); 1843 } 1844 #if IS_ENABLED(CONFIG_IPV6) 1845 mlx4_make_default_gid(dev, &default_gid); 1846 /* IPv6 gids */ 1847 in6_dev = in6_dev_get(dev); 1848 if (in6_dev) { 1849 read_lock_bh(&in6_dev->lock); 1850 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) { 1851 pgid = (union ib_gid *)&ifp->addr; 1852 if (!memcmp(pgid, &default_gid, sizeof(*pgid))) 1853 continue; 1854 update_gid_table(ibdev, port, pgid, 0, 0); 1855 } 1856 read_unlock_bh(&in6_dev->lock); 1857 in6_dev_put(in6_dev); 1858 } 1859 #endif 1860 } 1861 1862 static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev, 1863 struct net_device *dev, u8 port) 1864 { 1865 union ib_gid gid; 1866 mlx4_make_default_gid(dev, &gid); 1867 update_gid_table(ibdev, port, &gid, 0, 1); 1868 } 1869 1870 static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev) 1871 { 1872 struct net_device *dev; 1873 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 1874 int i; 1875 int err = 0; 1876 1877 for (i = 1; i <= ibdev->num_ports; ++i) { 1878 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) == 1879 IB_LINK_LAYER_ETHERNET) { 1880 err = reset_gid_table(ibdev, i); 1881 if (err) 1882 goto out; 1883 } 1884 } 1885 1886 read_lock(&dev_base_lock); 1887 spin_lock_bh(&iboe->lock); 1888 1889 for_each_netdev(&init_net, dev) { 1890 u8 port = mlx4_ib_get_dev_port(dev, ibdev); 1891 /* port will be non-zero only for ETH ports */ 1892 if (port) { 1893 mlx4_ib_set_default_gid(ibdev, dev, port); 1894 mlx4_ib_get_dev_addr(dev, ibdev, port); 1895 } 1896 } 1897 1898 spin_unlock_bh(&iboe->lock); 1899 read_unlock(&dev_base_lock); 1900 out: 1901 return err; 1902 } 1903 1904 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, 1905 struct net_device *dev, 1906 unsigned long event) 1907 1908 { 1909 struct mlx4_ib_iboe *iboe; 1910 int update_qps_port = -1; 1911 int port; 1912 1913 iboe = &ibdev->iboe; 1914 1915 spin_lock_bh(&iboe->lock); 1916 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 1917 enum ib_port_state port_state = IB_PORT_NOP; 1918 struct net_device *old_master = iboe->masters[port - 1]; 1919 struct net_device *curr_netdev; 1920 struct net_device *curr_master; 1921 1922 iboe->netdevs[port - 1] = 1923 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 1924 if (iboe->netdevs[port - 1]) 1925 mlx4_ib_set_default_gid(ibdev, 1926 iboe->netdevs[port - 1], port); 1927 curr_netdev = iboe->netdevs[port - 1]; 1928 1929 if (iboe->netdevs[port - 1] && 1930 netif_is_bond_slave(iboe->netdevs[port - 1])) { 1931 iboe->masters[port - 1] = netdev_master_upper_dev_get( 1932 iboe->netdevs[port - 1]); 1933 } else { 1934 iboe->masters[port - 1] = NULL; 1935 } 1936 curr_master = iboe->masters[port - 1]; 1937 1938 if (dev == iboe->netdevs[port - 1] && 1939 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || 1940 event == NETDEV_UP || event == NETDEV_CHANGE)) 1941 update_qps_port = port; 1942 1943 if (curr_netdev) { 1944 port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ? 1945 IB_PORT_ACTIVE : IB_PORT_DOWN; 1946 mlx4_ib_set_default_gid(ibdev, curr_netdev, port); 1947 if (curr_master) { 1948 /* if using bonding/team and a slave port is down, we 1949 * don't want the bond IP based gids in the table since 1950 * flows that select port by gid may get the down port. 1951 */ 1952 if (port_state == IB_PORT_DOWN && 1953 !mlx4_is_bonded(ibdev->dev)) { 1954 reset_gid_table(ibdev, port); 1955 mlx4_ib_set_default_gid(ibdev, 1956 curr_netdev, 1957 port); 1958 } else { 1959 /* gids from the upper dev (bond/team) 1960 * should appear in port's gid table 1961 */ 1962 mlx4_ib_get_dev_addr(curr_master, 1963 ibdev, port); 1964 } 1965 } 1966 /* if bonding is used it is possible that we add it to 1967 * masters only after IP address is assigned to the 1968 * net bonding interface. 1969 */ 1970 if (curr_master && (old_master != curr_master)) { 1971 reset_gid_table(ibdev, port); 1972 mlx4_ib_set_default_gid(ibdev, 1973 curr_netdev, port); 1974 mlx4_ib_get_dev_addr(curr_master, ibdev, port); 1975 } 1976 1977 if (!curr_master && (old_master != curr_master)) { 1978 reset_gid_table(ibdev, port); 1979 mlx4_ib_set_default_gid(ibdev, 1980 curr_netdev, port); 1981 mlx4_ib_get_dev_addr(curr_netdev, ibdev, port); 1982 } 1983 } else { 1984 reset_gid_table(ibdev, port); 1985 } 1986 } 1987 1988 spin_unlock_bh(&iboe->lock); 1989 1990 if (update_qps_port > 0) 1991 mlx4_ib_update_qps(ibdev, dev, update_qps_port); 1992 } 1993 1994 static int mlx4_ib_netdev_event(struct notifier_block *this, 1995 unsigned long event, void *ptr) 1996 { 1997 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1998 struct mlx4_ib_dev *ibdev; 1999 2000 if (!net_eq(dev_net(dev), &init_net)) 2001 return NOTIFY_DONE; 2002 2003 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 2004 mlx4_ib_scan_netdevs(ibdev, dev, event); 2005 2006 return NOTIFY_DONE; 2007 } 2008 2009 static void init_pkeys(struct mlx4_ib_dev *ibdev) 2010 { 2011 int port; 2012 int slave; 2013 int i; 2014 2015 if (mlx4_is_master(ibdev->dev)) { 2016 for (slave = 0; slave <= ibdev->dev->persist->num_vfs; 2017 ++slave) { 2018 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2019 for (i = 0; 2020 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2021 ++i) { 2022 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 2023 /* master has the identity virt2phys pkey mapping */ 2024 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 2025 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 2026 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 2027 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 2028 } 2029 } 2030 } 2031 /* initialize pkey cache */ 2032 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 2033 for (i = 0; 2034 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 2035 ++i) 2036 ibdev->pkeys.phys_pkey_cache[port-1][i] = 2037 (i) ? 0 : 0xFFFF; 2038 } 2039 } 2040 } 2041 2042 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2043 { 2044 char name[80]; 2045 int eq_per_port = 0; 2046 int added_eqs = 0; 2047 int total_eqs = 0; 2048 int i, j, eq; 2049 2050 /* Legacy mode or comp_pool is not large enough */ 2051 if (dev->caps.comp_pool == 0 || 2052 dev->caps.num_ports > dev->caps.comp_pool) 2053 return; 2054 2055 eq_per_port = dev->caps.comp_pool / dev->caps.num_ports; 2056 2057 /* Init eq table */ 2058 added_eqs = 0; 2059 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2060 added_eqs += eq_per_port; 2061 2062 total_eqs = dev->caps.num_comp_vectors + added_eqs; 2063 2064 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); 2065 if (!ibdev->eq_table) 2066 return; 2067 2068 ibdev->eq_added = added_eqs; 2069 2070 eq = 0; 2071 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { 2072 for (j = 0; j < eq_per_port; j++) { 2073 snprintf(name, sizeof(name), "mlx4-ib-%d-%d@%s", 2074 i, j, dev->persist->pdev->bus->name); 2075 /* Set IRQ for specific name (per ring) */ 2076 if (mlx4_assign_eq(dev, name, NULL, 2077 &ibdev->eq_table[eq])) { 2078 /* Use legacy (same as mlx4_en driver) */ 2079 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); 2080 ibdev->eq_table[eq] = 2081 (eq % dev->caps.num_comp_vectors); 2082 } 2083 eq++; 2084 } 2085 } 2086 2087 /* Fill the reset of the vector with legacy EQ */ 2088 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) 2089 ibdev->eq_table[eq++] = i; 2090 2091 /* Advertise the new number of EQs to clients */ 2092 ibdev->ib_dev.num_comp_vectors = total_eqs; 2093 } 2094 2095 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2096 { 2097 int i; 2098 2099 /* no additional eqs were added */ 2100 if (!ibdev->eq_table) 2101 return; 2102 2103 /* Reset the advertised EQ number */ 2104 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2105 2106 /* Free only the added eqs */ 2107 for (i = 0; i < ibdev->eq_added; i++) { 2108 /* Don't free legacy eqs if used */ 2109 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) 2110 continue; 2111 mlx4_release_eq(dev, ibdev->eq_table[i]); 2112 } 2113 2114 kfree(ibdev->eq_table); 2115 } 2116 2117 static void *mlx4_ib_add(struct mlx4_dev *dev) 2118 { 2119 struct mlx4_ib_dev *ibdev; 2120 int num_ports = 0; 2121 int i, j; 2122 int err; 2123 struct mlx4_ib_iboe *iboe; 2124 int ib_num_ports = 0; 2125 int num_req_counters; 2126 2127 pr_info_once("%s", mlx4_ib_version); 2128 2129 num_ports = 0; 2130 mlx4_foreach_ib_transport_port(i, dev) 2131 num_ports++; 2132 2133 /* No point in registering a device with no ports... */ 2134 if (num_ports == 0) 2135 return NULL; 2136 2137 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 2138 if (!ibdev) { 2139 dev_err(&dev->persist->pdev->dev, 2140 "Device struct alloc failed\n"); 2141 return NULL; 2142 } 2143 2144 iboe = &ibdev->iboe; 2145 2146 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 2147 goto err_dealloc; 2148 2149 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 2150 goto err_pd; 2151 2152 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 2153 PAGE_SIZE); 2154 if (!ibdev->uar_map) 2155 goto err_uar; 2156 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 2157 2158 ibdev->dev = dev; 2159 ibdev->bond_next_port = 0; 2160 2161 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 2162 ibdev->ib_dev.owner = THIS_MODULE; 2163 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 2164 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 2165 ibdev->num_ports = num_ports; 2166 ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ? 2167 1 : ibdev->num_ports; 2168 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2169 ibdev->ib_dev.dma_device = &dev->persist->pdev->dev; 2170 2171 if (dev->caps.userspace_caps) 2172 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 2173 else 2174 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 2175 2176 ibdev->ib_dev.uverbs_cmd_mask = 2177 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 2178 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 2179 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 2180 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 2181 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 2182 (1ull << IB_USER_VERBS_CMD_REG_MR) | 2183 (1ull << IB_USER_VERBS_CMD_REREG_MR) | 2184 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 2185 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 2186 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 2187 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 2188 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 2189 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 2190 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 2191 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 2192 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 2193 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 2194 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 2195 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 2196 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 2197 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 2198 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 2199 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 2200 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 2201 2202 ibdev->ib_dev.query_device = mlx4_ib_query_device; 2203 ibdev->ib_dev.query_port = mlx4_ib_query_port; 2204 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 2205 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 2206 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 2207 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 2208 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 2209 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 2210 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 2211 ibdev->ib_dev.mmap = mlx4_ib_mmap; 2212 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 2213 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 2214 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 2215 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 2216 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 2217 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 2218 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 2219 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 2220 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 2221 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 2222 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 2223 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 2224 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 2225 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 2226 ibdev->ib_dev.post_send = mlx4_ib_post_send; 2227 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 2228 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 2229 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 2230 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 2231 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 2232 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 2233 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 2234 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 2235 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 2236 ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr; 2237 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 2238 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 2239 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 2240 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 2241 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 2242 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 2243 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 2244 2245 if (!mlx4_is_slave(ibdev->dev)) { 2246 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 2247 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 2248 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 2249 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 2250 } 2251 2252 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2253 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 2254 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw; 2255 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw; 2256 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw; 2257 2258 ibdev->ib_dev.uverbs_cmd_mask |= 2259 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 2260 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 2261 } 2262 2263 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2264 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 2265 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 2266 ibdev->ib_dev.uverbs_cmd_mask |= 2267 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 2268 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 2269 } 2270 2271 if (check_flow_steering_support(dev)) { 2272 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2273 ibdev->ib_dev.create_flow = mlx4_ib_create_flow; 2274 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow; 2275 2276 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2277 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 2278 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 2279 } 2280 2281 mlx4_ib_alloc_eqs(dev, ibdev); 2282 2283 spin_lock_init(&iboe->lock); 2284 2285 if (init_node_data(ibdev)) 2286 goto err_map; 2287 2288 num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; 2289 for (i = 0; i < num_req_counters; ++i) { 2290 mutex_init(&ibdev->qp1_proxy_lock[i]); 2291 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2292 IB_LINK_LAYER_ETHERNET) { 2293 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); 2294 if (err) 2295 ibdev->counters[i] = -1; 2296 } else { 2297 ibdev->counters[i] = -1; 2298 } 2299 } 2300 if (mlx4_is_bonded(dev)) 2301 for (i = 1; i < ibdev->num_ports ; ++i) 2302 ibdev->counters[i] = ibdev->counters[0]; 2303 2304 2305 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2306 ib_num_ports++; 2307 2308 spin_lock_init(&ibdev->sm_lock); 2309 mutex_init(&ibdev->cap_mask_mutex); 2310 INIT_LIST_HEAD(&ibdev->qp_list); 2311 spin_lock_init(&ibdev->reset_flow_resource_lock); 2312 2313 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2314 ib_num_ports) { 2315 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2316 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2317 MLX4_IB_UC_STEER_QPN_ALIGN, 2318 &ibdev->steer_qpn_base, 0); 2319 if (err) 2320 goto err_counter; 2321 2322 ibdev->ib_uc_qpns_bitmap = 2323 kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) * 2324 sizeof(long), 2325 GFP_KERNEL); 2326 if (!ibdev->ib_uc_qpns_bitmap) { 2327 dev_err(&dev->persist->pdev->dev, 2328 "bit map alloc failed\n"); 2329 goto err_steer_qp_release; 2330 } 2331 2332 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count); 2333 2334 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2335 dev, ibdev->steer_qpn_base, 2336 ibdev->steer_qpn_base + 2337 ibdev->steer_qpn_count - 1); 2338 if (err) 2339 goto err_steer_free_bitmap; 2340 } 2341 2342 for (j = 1; j <= ibdev->dev->caps.num_ports; j++) 2343 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); 2344 2345 if (ib_register_device(&ibdev->ib_dev, NULL)) 2346 goto err_steer_free_bitmap; 2347 2348 if (mlx4_ib_mad_init(ibdev)) 2349 goto err_reg; 2350 2351 if (mlx4_ib_init_sriov(ibdev)) 2352 goto err_mad; 2353 2354 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) { 2355 if (!iboe->nb.notifier_call) { 2356 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2357 err = register_netdevice_notifier(&iboe->nb); 2358 if (err) { 2359 iboe->nb.notifier_call = NULL; 2360 goto err_notif; 2361 } 2362 } 2363 if (!iboe->nb_inet.notifier_call) { 2364 iboe->nb_inet.notifier_call = mlx4_ib_inet_event; 2365 err = register_inetaddr_notifier(&iboe->nb_inet); 2366 if (err) { 2367 iboe->nb_inet.notifier_call = NULL; 2368 goto err_notif; 2369 } 2370 } 2371 #if IS_ENABLED(CONFIG_IPV6) 2372 if (!iboe->nb_inet6.notifier_call) { 2373 iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event; 2374 err = register_inet6addr_notifier(&iboe->nb_inet6); 2375 if (err) { 2376 iboe->nb_inet6.notifier_call = NULL; 2377 goto err_notif; 2378 } 2379 } 2380 #endif 2381 if (mlx4_ib_init_gid_table(ibdev)) 2382 goto err_notif; 2383 } 2384 2385 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 2386 if (device_create_file(&ibdev->ib_dev.dev, 2387 mlx4_class_attributes[j])) 2388 goto err_notif; 2389 } 2390 2391 ibdev->ib_active = true; 2392 2393 if (mlx4_is_mfunc(ibdev->dev)) 2394 init_pkeys(ibdev); 2395 2396 /* create paravirt contexts for any VFs which are active */ 2397 if (mlx4_is_master(ibdev->dev)) { 2398 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2399 if (j == mlx4_master_func_num(ibdev->dev)) 2400 continue; 2401 if (mlx4_is_slave_active(ibdev->dev, j)) 2402 do_slave_init(ibdev, j, 1); 2403 } 2404 } 2405 return ibdev; 2406 2407 err_notif: 2408 if (ibdev->iboe.nb.notifier_call) { 2409 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2410 pr_warn("failure unregistering notifier\n"); 2411 ibdev->iboe.nb.notifier_call = NULL; 2412 } 2413 if (ibdev->iboe.nb_inet.notifier_call) { 2414 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet)) 2415 pr_warn("failure unregistering notifier\n"); 2416 ibdev->iboe.nb_inet.notifier_call = NULL; 2417 } 2418 #if IS_ENABLED(CONFIG_IPV6) 2419 if (ibdev->iboe.nb_inet6.notifier_call) { 2420 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6)) 2421 pr_warn("failure unregistering notifier\n"); 2422 ibdev->iboe.nb_inet6.notifier_call = NULL; 2423 } 2424 #endif 2425 flush_workqueue(wq); 2426 2427 mlx4_ib_close_sriov(ibdev); 2428 2429 err_mad: 2430 mlx4_ib_mad_cleanup(ibdev); 2431 2432 err_reg: 2433 ib_unregister_device(&ibdev->ib_dev); 2434 2435 err_steer_free_bitmap: 2436 kfree(ibdev->ib_uc_qpns_bitmap); 2437 2438 err_steer_qp_release: 2439 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 2440 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2441 ibdev->steer_qpn_count); 2442 err_counter: 2443 for (; i; --i) 2444 if (ibdev->counters[i - 1] != -1) 2445 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 2446 2447 err_map: 2448 iounmap(ibdev->uar_map); 2449 2450 err_uar: 2451 mlx4_uar_free(dev, &ibdev->priv_uar); 2452 2453 err_pd: 2454 mlx4_pd_free(dev, ibdev->priv_pdn); 2455 2456 err_dealloc: 2457 ib_dealloc_device(&ibdev->ib_dev); 2458 2459 return NULL; 2460 } 2461 2462 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2463 { 2464 int offset; 2465 2466 WARN_ON(!dev->ib_uc_qpns_bitmap); 2467 2468 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2469 dev->steer_qpn_count, 2470 get_count_order(count)); 2471 if (offset < 0) 2472 return offset; 2473 2474 *qpn = dev->steer_qpn_base + offset; 2475 return 0; 2476 } 2477 2478 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2479 { 2480 if (!qpn || 2481 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2482 return; 2483 2484 BUG_ON(qpn < dev->steer_qpn_base); 2485 2486 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2487 qpn - dev->steer_qpn_base, 2488 get_count_order(count)); 2489 } 2490 2491 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2492 int is_attach) 2493 { 2494 int err; 2495 size_t flow_size; 2496 struct ib_flow_attr *flow = NULL; 2497 struct ib_flow_spec_ib *ib_spec; 2498 2499 if (is_attach) { 2500 flow_size = sizeof(struct ib_flow_attr) + 2501 sizeof(struct ib_flow_spec_ib); 2502 flow = kzalloc(flow_size, GFP_KERNEL); 2503 if (!flow) 2504 return -ENOMEM; 2505 flow->port = mqp->port; 2506 flow->num_of_specs = 1; 2507 flow->size = flow_size; 2508 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2509 ib_spec->type = IB_FLOW_SPEC_IB; 2510 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2511 /* Add an empty rule for IB L2 */ 2512 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2513 2514 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, 2515 IB_FLOW_DOMAIN_NIC, 2516 MLX4_FS_REGULAR, 2517 &mqp->reg_id); 2518 } else { 2519 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2520 } 2521 kfree(flow); 2522 return err; 2523 } 2524 2525 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 2526 { 2527 struct mlx4_ib_dev *ibdev = ibdev_ptr; 2528 int p; 2529 2530 ibdev->ib_active = false; 2531 flush_workqueue(wq); 2532 2533 mlx4_ib_close_sriov(ibdev); 2534 mlx4_ib_mad_cleanup(ibdev); 2535 ib_unregister_device(&ibdev->ib_dev); 2536 if (ibdev->iboe.nb.notifier_call) { 2537 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2538 pr_warn("failure unregistering notifier\n"); 2539 ibdev->iboe.nb.notifier_call = NULL; 2540 } 2541 2542 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) { 2543 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2544 ibdev->steer_qpn_count); 2545 kfree(ibdev->ib_uc_qpns_bitmap); 2546 } 2547 2548 if (ibdev->iboe.nb_inet.notifier_call) { 2549 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet)) 2550 pr_warn("failure unregistering notifier\n"); 2551 ibdev->iboe.nb_inet.notifier_call = NULL; 2552 } 2553 #if IS_ENABLED(CONFIG_IPV6) 2554 if (ibdev->iboe.nb_inet6.notifier_call) { 2555 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6)) 2556 pr_warn("failure unregistering notifier\n"); 2557 ibdev->iboe.nb_inet6.notifier_call = NULL; 2558 } 2559 #endif 2560 2561 iounmap(ibdev->uar_map); 2562 for (p = 0; p < ibdev->num_ports; ++p) 2563 if (ibdev->counters[p] != -1) 2564 mlx4_counter_free(ibdev->dev, ibdev->counters[p]); 2565 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 2566 mlx4_CLOSE_PORT(dev, p); 2567 2568 mlx4_ib_free_eqs(dev, ibdev); 2569 2570 mlx4_uar_free(dev, &ibdev->priv_uar); 2571 mlx4_pd_free(dev, ibdev->priv_pdn); 2572 ib_dealloc_device(&ibdev->ib_dev); 2573 } 2574 2575 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 2576 { 2577 struct mlx4_ib_demux_work **dm = NULL; 2578 struct mlx4_dev *dev = ibdev->dev; 2579 int i; 2580 unsigned long flags; 2581 struct mlx4_active_ports actv_ports; 2582 unsigned int ports; 2583 unsigned int first_port; 2584 2585 if (!mlx4_is_master(dev)) 2586 return; 2587 2588 actv_ports = mlx4_get_active_ports(dev, slave); 2589 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 2590 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 2591 2592 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); 2593 if (!dm) { 2594 pr_err("failed to allocate memory for tunneling qp update\n"); 2595 goto out; 2596 } 2597 2598 for (i = 0; i < ports; i++) { 2599 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 2600 if (!dm[i]) { 2601 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 2602 for (i = 0; i < dev->caps.num_ports; i++) { 2603 if (dm[i]) 2604 kfree(dm[i]); 2605 } 2606 goto out; 2607 } 2608 } 2609 /* initialize or tear down tunnel QPs for the slave */ 2610 for (i = 0; i < ports; i++) { 2611 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 2612 dm[i]->port = first_port + i + 1; 2613 dm[i]->slave = slave; 2614 dm[i]->do_init = do_init; 2615 dm[i]->dev = ibdev; 2616 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 2617 if (!ibdev->sriov.is_going_down) 2618 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 2619 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 2620 } 2621 out: 2622 kfree(dm); 2623 return; 2624 } 2625 2626 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev) 2627 { 2628 struct mlx4_ib_qp *mqp; 2629 unsigned long flags_qp; 2630 unsigned long flags_cq; 2631 struct mlx4_ib_cq *send_mcq, *recv_mcq; 2632 struct list_head cq_notify_list; 2633 struct mlx4_cq *mcq; 2634 unsigned long flags; 2635 2636 pr_warn("mlx4_ib_handle_catas_error was started\n"); 2637 INIT_LIST_HEAD(&cq_notify_list); 2638 2639 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 2640 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 2641 2642 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 2643 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 2644 if (mqp->sq.tail != mqp->sq.head) { 2645 send_mcq = to_mcq(mqp->ibqp.send_cq); 2646 spin_lock_irqsave(&send_mcq->lock, flags_cq); 2647 if (send_mcq->mcq.comp && 2648 mqp->ibqp.send_cq->comp_handler) { 2649 if (!send_mcq->mcq.reset_notify_added) { 2650 send_mcq->mcq.reset_notify_added = 1; 2651 list_add_tail(&send_mcq->mcq.reset_notify, 2652 &cq_notify_list); 2653 } 2654 } 2655 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 2656 } 2657 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 2658 /* Now, handle the QP's receive queue */ 2659 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 2660 /* no handling is needed for SRQ */ 2661 if (!mqp->ibqp.srq) { 2662 if (mqp->rq.tail != mqp->rq.head) { 2663 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 2664 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 2665 if (recv_mcq->mcq.comp && 2666 mqp->ibqp.recv_cq->comp_handler) { 2667 if (!recv_mcq->mcq.reset_notify_added) { 2668 recv_mcq->mcq.reset_notify_added = 1; 2669 list_add_tail(&recv_mcq->mcq.reset_notify, 2670 &cq_notify_list); 2671 } 2672 } 2673 spin_unlock_irqrestore(&recv_mcq->lock, 2674 flags_cq); 2675 } 2676 } 2677 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 2678 } 2679 2680 list_for_each_entry(mcq, &cq_notify_list, reset_notify) { 2681 mcq->comp(mcq); 2682 } 2683 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 2684 pr_warn("mlx4_ib_handle_catas_error ended\n"); 2685 } 2686 2687 static void handle_bonded_port_state_event(struct work_struct *work) 2688 { 2689 struct ib_event_work *ew = 2690 container_of(work, struct ib_event_work, work); 2691 struct mlx4_ib_dev *ibdev = ew->ib_dev; 2692 enum ib_port_state bonded_port_state = IB_PORT_NOP; 2693 int i; 2694 struct ib_event ibev; 2695 2696 kfree(ew); 2697 spin_lock_bh(&ibdev->iboe.lock); 2698 for (i = 0; i < MLX4_MAX_PORTS; ++i) { 2699 struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; 2700 enum ib_port_state curr_port_state; 2701 2702 if (!curr_netdev) 2703 continue; 2704 2705 curr_port_state = 2706 (netif_running(curr_netdev) && 2707 netif_carrier_ok(curr_netdev)) ? 2708 IB_PORT_ACTIVE : IB_PORT_DOWN; 2709 2710 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ? 2711 curr_port_state : IB_PORT_ACTIVE; 2712 } 2713 spin_unlock_bh(&ibdev->iboe.lock); 2714 2715 ibev.device = &ibdev->ib_dev; 2716 ibev.element.port_num = 1; 2717 ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ? 2718 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 2719 2720 ib_dispatch_event(&ibev); 2721 } 2722 2723 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 2724 enum mlx4_dev_event event, unsigned long param) 2725 { 2726 struct ib_event ibev; 2727 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 2728 struct mlx4_eqe *eqe = NULL; 2729 struct ib_event_work *ew; 2730 int p = 0; 2731 2732 if (mlx4_is_bonded(dev) && 2733 ((event == MLX4_DEV_EVENT_PORT_UP) || 2734 (event == MLX4_DEV_EVENT_PORT_DOWN))) { 2735 ew = kmalloc(sizeof(*ew), GFP_ATOMIC); 2736 if (!ew) 2737 return; 2738 INIT_WORK(&ew->work, handle_bonded_port_state_event); 2739 ew->ib_dev = ibdev; 2740 queue_work(wq, &ew->work); 2741 return; 2742 } 2743 2744 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 2745 eqe = (struct mlx4_eqe *)param; 2746 else 2747 p = (int) param; 2748 2749 switch (event) { 2750 case MLX4_DEV_EVENT_PORT_UP: 2751 if (p > ibdev->num_ports) 2752 return; 2753 if (mlx4_is_master(dev) && 2754 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 2755 IB_LINK_LAYER_INFINIBAND) { 2756 mlx4_ib_invalidate_all_guid_record(ibdev, p); 2757 } 2758 ibev.event = IB_EVENT_PORT_ACTIVE; 2759 break; 2760 2761 case MLX4_DEV_EVENT_PORT_DOWN: 2762 if (p > ibdev->num_ports) 2763 return; 2764 ibev.event = IB_EVENT_PORT_ERR; 2765 break; 2766 2767 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 2768 ibdev->ib_active = false; 2769 ibev.event = IB_EVENT_DEVICE_FATAL; 2770 mlx4_ib_handle_catas_error(ibdev); 2771 break; 2772 2773 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 2774 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 2775 if (!ew) { 2776 pr_err("failed to allocate memory for events work\n"); 2777 break; 2778 } 2779 2780 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 2781 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 2782 ew->ib_dev = ibdev; 2783 /* need to queue only for port owner, which uses GEN_EQE */ 2784 if (mlx4_is_master(dev)) 2785 queue_work(wq, &ew->work); 2786 else 2787 handle_port_mgmt_change_event(&ew->work); 2788 return; 2789 2790 case MLX4_DEV_EVENT_SLAVE_INIT: 2791 /* here, p is the slave id */ 2792 do_slave_init(ibdev, p, 1); 2793 return; 2794 2795 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 2796 /* here, p is the slave id */ 2797 do_slave_init(ibdev, p, 0); 2798 return; 2799 2800 default: 2801 return; 2802 } 2803 2804 ibev.device = ibdev_ptr; 2805 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; 2806 2807 ib_dispatch_event(&ibev); 2808 } 2809 2810 static struct mlx4_interface mlx4_ib_interface = { 2811 .add = mlx4_ib_add, 2812 .remove = mlx4_ib_remove, 2813 .event = mlx4_ib_event, 2814 .protocol = MLX4_PROT_IB_IPV6, 2815 .flags = MLX4_INTFF_BONDING 2816 }; 2817 2818 static int __init mlx4_ib_init(void) 2819 { 2820 int err; 2821 2822 wq = create_singlethread_workqueue("mlx4_ib"); 2823 if (!wq) 2824 return -ENOMEM; 2825 2826 err = mlx4_ib_mcg_init(); 2827 if (err) 2828 goto clean_wq; 2829 2830 err = mlx4_register_interface(&mlx4_ib_interface); 2831 if (err) 2832 goto clean_mcg; 2833 2834 return 0; 2835 2836 clean_mcg: 2837 mlx4_ib_mcg_destroy(); 2838 2839 clean_wq: 2840 destroy_workqueue(wq); 2841 return err; 2842 } 2843 2844 static void __exit mlx4_ib_cleanup(void) 2845 { 2846 mlx4_unregister_interface(&mlx4_ib_interface); 2847 mlx4_ib_mcg_destroy(); 2848 destroy_workqueue(wq); 2849 } 2850 2851 module_init(mlx4_ib_init); 2852 module_exit(mlx4_ib_cleanup); 2853