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 43 #include <rdma/ib_smi.h> 44 #include <rdma/ib_user_verbs.h> 45 #include <rdma/ib_addr.h> 46 47 #include <linux/mlx4/driver.h> 48 #include <linux/mlx4/cmd.h> 49 50 #include "mlx4_ib.h" 51 #include "user.h" 52 53 #define DRV_NAME MLX4_IB_DRV_NAME 54 #define DRV_VERSION "1.0" 55 #define DRV_RELDATE "April 4, 2008" 56 57 MODULE_AUTHOR("Roland Dreier"); 58 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 59 MODULE_LICENSE("Dual BSD/GPL"); 60 MODULE_VERSION(DRV_VERSION); 61 62 int mlx4_ib_sm_guid_assign = 1; 63 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 64 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)"); 65 66 static const char mlx4_ib_version[] = 67 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 68 DRV_VERSION " (" DRV_RELDATE ")\n"; 69 70 struct update_gid_work { 71 struct work_struct work; 72 union ib_gid gids[128]; 73 struct mlx4_ib_dev *dev; 74 int port; 75 }; 76 77 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 78 79 static struct workqueue_struct *wq; 80 81 static void init_query_mad(struct ib_smp *mad) 82 { 83 mad->base_version = 1; 84 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 85 mad->class_version = 1; 86 mad->method = IB_MGMT_METHOD_GET; 87 } 88 89 static union ib_gid zgid; 90 91 static int mlx4_ib_query_device(struct ib_device *ibdev, 92 struct ib_device_attr *props) 93 { 94 struct mlx4_ib_dev *dev = to_mdev(ibdev); 95 struct ib_smp *in_mad = NULL; 96 struct ib_smp *out_mad = NULL; 97 int err = -ENOMEM; 98 99 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 100 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 101 if (!in_mad || !out_mad) 102 goto out; 103 104 init_query_mad(in_mad); 105 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 106 107 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 108 1, NULL, NULL, in_mad, out_mad); 109 if (err) 110 goto out; 111 112 memset(props, 0, sizeof *props); 113 114 props->fw_ver = dev->dev->caps.fw_ver; 115 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 116 IB_DEVICE_PORT_ACTIVE_EVENT | 117 IB_DEVICE_SYS_IMAGE_GUID | 118 IB_DEVICE_RC_RNR_NAK_GEN | 119 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 120 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 121 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 122 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 123 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 124 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) 125 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 126 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 127 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 128 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 129 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 130 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) 131 props->device_cap_flags |= IB_DEVICE_UD_TSO; 132 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 133 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 134 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 135 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 136 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 137 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 138 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 139 props->device_cap_flags |= IB_DEVICE_XRC; 140 141 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 142 0xffffff; 143 props->vendor_part_id = dev->dev->pdev->device; 144 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 145 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 146 147 props->max_mr_size = ~0ull; 148 props->page_size_cap = dev->dev->caps.page_size_cap; 149 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps; 150 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 151 props->max_sge = min(dev->dev->caps.max_sq_sg, 152 dev->dev->caps.max_rq_sg); 153 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs; 154 props->max_cqe = dev->dev->caps.max_cqes; 155 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws; 156 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 157 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 158 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 159 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 160 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs; 161 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 162 props->max_srq_sge = dev->dev->caps.max_srq_sge; 163 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 164 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 165 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 166 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 167 props->masked_atomic_cap = props->atomic_cap; 168 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 169 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 170 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 171 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 172 props->max_mcast_grp; 173 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 174 175 out: 176 kfree(in_mad); 177 kfree(out_mad); 178 179 return err; 180 } 181 182 static enum rdma_link_layer 183 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 184 { 185 struct mlx4_dev *dev = to_mdev(device)->dev; 186 187 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 188 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 189 } 190 191 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 192 struct ib_port_attr *props, int netw_view) 193 { 194 struct ib_smp *in_mad = NULL; 195 struct ib_smp *out_mad = NULL; 196 int ext_active_speed; 197 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 198 int err = -ENOMEM; 199 200 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 201 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 202 if (!in_mad || !out_mad) 203 goto out; 204 205 init_query_mad(in_mad); 206 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 207 in_mad->attr_mod = cpu_to_be32(port); 208 209 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 210 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 211 212 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 213 in_mad, out_mad); 214 if (err) 215 goto out; 216 217 218 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 219 props->lmc = out_mad->data[34] & 0x7; 220 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 221 props->sm_sl = out_mad->data[36] & 0xf; 222 props->state = out_mad->data[32] & 0xf; 223 props->phys_state = out_mad->data[33] >> 4; 224 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 225 if (netw_view) 226 props->gid_tbl_len = out_mad->data[50]; 227 else 228 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 229 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 230 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 231 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 232 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 233 props->active_width = out_mad->data[31] & 0xf; 234 props->active_speed = out_mad->data[35] >> 4; 235 props->max_mtu = out_mad->data[41] & 0xf; 236 props->active_mtu = out_mad->data[36] >> 4; 237 props->subnet_timeout = out_mad->data[51] & 0x1f; 238 props->max_vl_num = out_mad->data[37] >> 4; 239 props->init_type_reply = out_mad->data[41] >> 4; 240 241 /* Check if extended speeds (EDR/FDR/...) are supported */ 242 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 243 ext_active_speed = out_mad->data[62] >> 4; 244 245 switch (ext_active_speed) { 246 case 1: 247 props->active_speed = IB_SPEED_FDR; 248 break; 249 case 2: 250 props->active_speed = IB_SPEED_EDR; 251 break; 252 } 253 } 254 255 /* If reported active speed is QDR, check if is FDR-10 */ 256 if (props->active_speed == IB_SPEED_QDR) { 257 init_query_mad(in_mad); 258 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 259 in_mad->attr_mod = cpu_to_be32(port); 260 261 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 262 NULL, NULL, in_mad, out_mad); 263 if (err) 264 goto out; 265 266 /* Checking LinkSpeedActive for FDR-10 */ 267 if (out_mad->data[15] & 0x1) 268 props->active_speed = IB_SPEED_FDR10; 269 } 270 271 /* Avoid wrong speed value returned by FW if the IB link is down. */ 272 if (props->state == IB_PORT_DOWN) 273 props->active_speed = IB_SPEED_SDR; 274 275 out: 276 kfree(in_mad); 277 kfree(out_mad); 278 return err; 279 } 280 281 static u8 state_to_phys_state(enum ib_port_state state) 282 { 283 return state == IB_PORT_ACTIVE ? 5 : 3; 284 } 285 286 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 287 struct ib_port_attr *props, int netw_view) 288 { 289 290 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 291 struct mlx4_ib_iboe *iboe = &mdev->iboe; 292 struct net_device *ndev; 293 enum ib_mtu tmp; 294 struct mlx4_cmd_mailbox *mailbox; 295 int err = 0; 296 297 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 298 if (IS_ERR(mailbox)) 299 return PTR_ERR(mailbox); 300 301 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 302 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 303 MLX4_CMD_WRAPPED); 304 if (err) 305 goto out; 306 307 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? 308 IB_WIDTH_4X : IB_WIDTH_1X; 309 props->active_speed = IB_SPEED_QDR; 310 props->port_cap_flags = IB_PORT_CM_SUP; 311 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 312 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 313 props->pkey_tbl_len = 1; 314 props->max_mtu = IB_MTU_4096; 315 props->max_vl_num = 2; 316 props->state = IB_PORT_DOWN; 317 props->phys_state = state_to_phys_state(props->state); 318 props->active_mtu = IB_MTU_256; 319 spin_lock(&iboe->lock); 320 ndev = iboe->netdevs[port - 1]; 321 if (!ndev) 322 goto out_unlock; 323 324 tmp = iboe_get_mtu(ndev->mtu); 325 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 326 327 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 328 IB_PORT_ACTIVE : IB_PORT_DOWN; 329 props->phys_state = state_to_phys_state(props->state); 330 out_unlock: 331 spin_unlock(&iboe->lock); 332 out: 333 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 334 return err; 335 } 336 337 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 338 struct ib_port_attr *props, int netw_view) 339 { 340 int err; 341 342 memset(props, 0, sizeof *props); 343 344 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 345 ib_link_query_port(ibdev, port, props, netw_view) : 346 eth_link_query_port(ibdev, port, props, netw_view); 347 348 return err; 349 } 350 351 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 352 struct ib_port_attr *props) 353 { 354 /* returns host view */ 355 return __mlx4_ib_query_port(ibdev, port, props, 0); 356 } 357 358 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 359 union ib_gid *gid, int netw_view) 360 { 361 struct ib_smp *in_mad = NULL; 362 struct ib_smp *out_mad = NULL; 363 int err = -ENOMEM; 364 struct mlx4_ib_dev *dev = to_mdev(ibdev); 365 int clear = 0; 366 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 367 368 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 369 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 370 if (!in_mad || !out_mad) 371 goto out; 372 373 init_query_mad(in_mad); 374 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 375 in_mad->attr_mod = cpu_to_be32(port); 376 377 if (mlx4_is_mfunc(dev->dev) && netw_view) 378 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 379 380 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 381 if (err) 382 goto out; 383 384 memcpy(gid->raw, out_mad->data + 8, 8); 385 386 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 387 if (index) { 388 /* For any index > 0, return the null guid */ 389 err = 0; 390 clear = 1; 391 goto out; 392 } 393 } 394 395 init_query_mad(in_mad); 396 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 397 in_mad->attr_mod = cpu_to_be32(index / 8); 398 399 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 400 NULL, NULL, in_mad, out_mad); 401 if (err) 402 goto out; 403 404 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 405 406 out: 407 if (clear) 408 memset(gid->raw + 8, 0, 8); 409 kfree(in_mad); 410 kfree(out_mad); 411 return err; 412 } 413 414 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, 415 union ib_gid *gid) 416 { 417 struct mlx4_ib_dev *dev = to_mdev(ibdev); 418 419 *gid = dev->iboe.gid_table[port - 1][index]; 420 421 return 0; 422 } 423 424 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 425 union ib_gid *gid) 426 { 427 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 428 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 429 else 430 return iboe_query_gid(ibdev, port, index, gid); 431 } 432 433 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 434 u16 *pkey, int netw_view) 435 { 436 struct ib_smp *in_mad = NULL; 437 struct ib_smp *out_mad = NULL; 438 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 439 int err = -ENOMEM; 440 441 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 442 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 443 if (!in_mad || !out_mad) 444 goto out; 445 446 init_query_mad(in_mad); 447 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 448 in_mad->attr_mod = cpu_to_be32(index / 32); 449 450 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 451 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 452 453 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 454 in_mad, out_mad); 455 if (err) 456 goto out; 457 458 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 459 460 out: 461 kfree(in_mad); 462 kfree(out_mad); 463 return err; 464 } 465 466 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 467 { 468 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 469 } 470 471 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 472 struct ib_device_modify *props) 473 { 474 struct mlx4_cmd_mailbox *mailbox; 475 unsigned long flags; 476 477 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 478 return -EOPNOTSUPP; 479 480 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 481 return 0; 482 483 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 484 return -EOPNOTSUPP; 485 486 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 487 memcpy(ibdev->node_desc, props->node_desc, 64); 488 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 489 490 /* 491 * If possible, pass node desc to FW, so it can generate 492 * a 144 trap. If cmd fails, just ignore. 493 */ 494 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 495 if (IS_ERR(mailbox)) 496 return 0; 497 498 memset(mailbox->buf, 0, 256); 499 memcpy(mailbox->buf, props->node_desc, 64); 500 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 501 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 502 503 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 504 505 return 0; 506 } 507 508 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 509 u32 cap_mask) 510 { 511 struct mlx4_cmd_mailbox *mailbox; 512 int err; 513 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 514 515 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 516 if (IS_ERR(mailbox)) 517 return PTR_ERR(mailbox); 518 519 memset(mailbox->buf, 0, 256); 520 521 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 522 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 523 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 524 } else { 525 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 526 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 527 } 528 529 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, 530 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); 531 532 mlx4_free_cmd_mailbox(dev->dev, mailbox); 533 return err; 534 } 535 536 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 537 struct ib_port_modify *props) 538 { 539 struct ib_port_attr attr; 540 u32 cap_mask; 541 int err; 542 543 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); 544 545 err = mlx4_ib_query_port(ibdev, port, &attr); 546 if (err) 547 goto out; 548 549 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 550 ~props->clr_port_cap_mask; 551 552 err = mlx4_SET_PORT(to_mdev(ibdev), port, 553 !!(mask & IB_PORT_RESET_QKEY_CNTR), 554 cap_mask); 555 556 out: 557 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 558 return err; 559 } 560 561 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 562 struct ib_udata *udata) 563 { 564 struct mlx4_ib_dev *dev = to_mdev(ibdev); 565 struct mlx4_ib_ucontext *context; 566 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 567 struct mlx4_ib_alloc_ucontext_resp resp; 568 int err; 569 570 if (!dev->ib_active) 571 return ERR_PTR(-EAGAIN); 572 573 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 574 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 575 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 576 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 577 } else { 578 resp.dev_caps = dev->dev->caps.userspace_caps; 579 resp.qp_tab_size = dev->dev->caps.num_qps; 580 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 581 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 582 resp.cqe_size = dev->dev->caps.cqe_size; 583 } 584 585 context = kmalloc(sizeof *context, GFP_KERNEL); 586 if (!context) 587 return ERR_PTR(-ENOMEM); 588 589 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 590 if (err) { 591 kfree(context); 592 return ERR_PTR(err); 593 } 594 595 INIT_LIST_HEAD(&context->db_page_list); 596 mutex_init(&context->db_page_mutex); 597 598 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 599 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 600 else 601 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 602 603 if (err) { 604 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 605 kfree(context); 606 return ERR_PTR(-EFAULT); 607 } 608 609 return &context->ibucontext; 610 } 611 612 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 613 { 614 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 615 616 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 617 kfree(context); 618 619 return 0; 620 } 621 622 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 623 { 624 struct mlx4_ib_dev *dev = to_mdev(context->device); 625 626 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 627 return -EINVAL; 628 629 if (vma->vm_pgoff == 0) { 630 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 631 632 if (io_remap_pfn_range(vma, vma->vm_start, 633 to_mucontext(context)->uar.pfn, 634 PAGE_SIZE, vma->vm_page_prot)) 635 return -EAGAIN; 636 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 637 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 638 639 if (io_remap_pfn_range(vma, vma->vm_start, 640 to_mucontext(context)->uar.pfn + 641 dev->dev->caps.num_uars, 642 PAGE_SIZE, vma->vm_page_prot)) 643 return -EAGAIN; 644 } else 645 return -EINVAL; 646 647 return 0; 648 } 649 650 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 651 struct ib_ucontext *context, 652 struct ib_udata *udata) 653 { 654 struct mlx4_ib_pd *pd; 655 int err; 656 657 pd = kmalloc(sizeof *pd, GFP_KERNEL); 658 if (!pd) 659 return ERR_PTR(-ENOMEM); 660 661 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 662 if (err) { 663 kfree(pd); 664 return ERR_PTR(err); 665 } 666 667 if (context) 668 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 669 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 670 kfree(pd); 671 return ERR_PTR(-EFAULT); 672 } 673 674 return &pd->ibpd; 675 } 676 677 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 678 { 679 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 680 kfree(pd); 681 682 return 0; 683 } 684 685 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 686 struct ib_ucontext *context, 687 struct ib_udata *udata) 688 { 689 struct mlx4_ib_xrcd *xrcd; 690 int err; 691 692 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 693 return ERR_PTR(-ENOSYS); 694 695 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 696 if (!xrcd) 697 return ERR_PTR(-ENOMEM); 698 699 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 700 if (err) 701 goto err1; 702 703 xrcd->pd = ib_alloc_pd(ibdev); 704 if (IS_ERR(xrcd->pd)) { 705 err = PTR_ERR(xrcd->pd); 706 goto err2; 707 } 708 709 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 710 if (IS_ERR(xrcd->cq)) { 711 err = PTR_ERR(xrcd->cq); 712 goto err3; 713 } 714 715 return &xrcd->ibxrcd; 716 717 err3: 718 ib_dealloc_pd(xrcd->pd); 719 err2: 720 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 721 err1: 722 kfree(xrcd); 723 return ERR_PTR(err); 724 } 725 726 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 727 { 728 ib_destroy_cq(to_mxrcd(xrcd)->cq); 729 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 730 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 731 kfree(xrcd); 732 733 return 0; 734 } 735 736 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 737 { 738 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 739 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 740 struct mlx4_ib_gid_entry *ge; 741 742 ge = kzalloc(sizeof *ge, GFP_KERNEL); 743 if (!ge) 744 return -ENOMEM; 745 746 ge->gid = *gid; 747 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 748 ge->port = mqp->port; 749 ge->added = 1; 750 } 751 752 mutex_lock(&mqp->mutex); 753 list_add_tail(&ge->list, &mqp->gid_list); 754 mutex_unlock(&mqp->mutex); 755 756 return 0; 757 } 758 759 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 760 union ib_gid *gid) 761 { 762 u8 mac[6]; 763 struct net_device *ndev; 764 int ret = 0; 765 766 if (!mqp->port) 767 return 0; 768 769 spin_lock(&mdev->iboe.lock); 770 ndev = mdev->iboe.netdevs[mqp->port - 1]; 771 if (ndev) 772 dev_hold(ndev); 773 spin_unlock(&mdev->iboe.lock); 774 775 if (ndev) { 776 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 777 rtnl_lock(); 778 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac); 779 ret = 1; 780 rtnl_unlock(); 781 dev_put(ndev); 782 } 783 784 return ret; 785 } 786 787 struct mlx4_ib_steering { 788 struct list_head list; 789 u64 reg_id; 790 union ib_gid gid; 791 }; 792 793 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 794 { 795 int err; 796 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 797 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 798 u64 reg_id; 799 struct mlx4_ib_steering *ib_steering = NULL; 800 801 if (mdev->dev->caps.steering_mode == 802 MLX4_STEERING_MODE_DEVICE_MANAGED) { 803 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 804 if (!ib_steering) 805 return -ENOMEM; 806 } 807 808 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 809 !!(mqp->flags & 810 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 811 MLX4_PROT_IB_IPV6, ®_id); 812 if (err) 813 goto err_malloc; 814 815 err = add_gid_entry(ibqp, gid); 816 if (err) 817 goto err_add; 818 819 if (ib_steering) { 820 memcpy(ib_steering->gid.raw, gid->raw, 16); 821 ib_steering->reg_id = reg_id; 822 mutex_lock(&mqp->mutex); 823 list_add(&ib_steering->list, &mqp->steering_rules); 824 mutex_unlock(&mqp->mutex); 825 } 826 return 0; 827 828 err_add: 829 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 830 MLX4_PROT_IB_IPV6, reg_id); 831 err_malloc: 832 kfree(ib_steering); 833 834 return err; 835 } 836 837 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 838 { 839 struct mlx4_ib_gid_entry *ge; 840 struct mlx4_ib_gid_entry *tmp; 841 struct mlx4_ib_gid_entry *ret = NULL; 842 843 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 844 if (!memcmp(raw, ge->gid.raw, 16)) { 845 ret = ge; 846 break; 847 } 848 } 849 850 return ret; 851 } 852 853 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 854 { 855 int err; 856 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 857 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 858 u8 mac[6]; 859 struct net_device *ndev; 860 struct mlx4_ib_gid_entry *ge; 861 u64 reg_id = 0; 862 863 if (mdev->dev->caps.steering_mode == 864 MLX4_STEERING_MODE_DEVICE_MANAGED) { 865 struct mlx4_ib_steering *ib_steering; 866 867 mutex_lock(&mqp->mutex); 868 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 869 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 870 list_del(&ib_steering->list); 871 break; 872 } 873 } 874 mutex_unlock(&mqp->mutex); 875 if (&ib_steering->list == &mqp->steering_rules) { 876 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 877 return -EINVAL; 878 } 879 reg_id = ib_steering->reg_id; 880 kfree(ib_steering); 881 } 882 883 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 884 MLX4_PROT_IB_IPV6, reg_id); 885 if (err) 886 return err; 887 888 mutex_lock(&mqp->mutex); 889 ge = find_gid_entry(mqp, gid->raw); 890 if (ge) { 891 spin_lock(&mdev->iboe.lock); 892 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 893 if (ndev) 894 dev_hold(ndev); 895 spin_unlock(&mdev->iboe.lock); 896 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 897 if (ndev) { 898 rtnl_lock(); 899 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac); 900 rtnl_unlock(); 901 dev_put(ndev); 902 } 903 list_del(&ge->list); 904 kfree(ge); 905 } else 906 pr_warn("could not find mgid entry\n"); 907 908 mutex_unlock(&mqp->mutex); 909 910 return 0; 911 } 912 913 static int init_node_data(struct mlx4_ib_dev *dev) 914 { 915 struct ib_smp *in_mad = NULL; 916 struct ib_smp *out_mad = NULL; 917 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 918 int err = -ENOMEM; 919 920 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 921 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 922 if (!in_mad || !out_mad) 923 goto out; 924 925 init_query_mad(in_mad); 926 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 927 if (mlx4_is_master(dev->dev)) 928 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 929 930 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 931 if (err) 932 goto out; 933 934 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 935 936 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 937 938 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 939 if (err) 940 goto out; 941 942 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 943 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 944 945 out: 946 kfree(in_mad); 947 kfree(out_mad); 948 return err; 949 } 950 951 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 952 char *buf) 953 { 954 struct mlx4_ib_dev *dev = 955 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 956 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 957 } 958 959 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 960 char *buf) 961 { 962 struct mlx4_ib_dev *dev = 963 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 964 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 965 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 966 (int) dev->dev->caps.fw_ver & 0xffff); 967 } 968 969 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 970 char *buf) 971 { 972 struct mlx4_ib_dev *dev = 973 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 974 return sprintf(buf, "%x\n", dev->dev->rev_id); 975 } 976 977 static ssize_t show_board(struct device *device, struct device_attribute *attr, 978 char *buf) 979 { 980 struct mlx4_ib_dev *dev = 981 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 982 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 983 dev->dev->board_id); 984 } 985 986 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 987 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 988 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 989 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 990 991 static struct device_attribute *mlx4_class_attributes[] = { 992 &dev_attr_hw_rev, 993 &dev_attr_fw_ver, 994 &dev_attr_hca_type, 995 &dev_attr_board_id 996 }; 997 998 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev) 999 { 1000 memcpy(eui, dev->dev_addr, 3); 1001 memcpy(eui + 5, dev->dev_addr + 3, 3); 1002 if (vlan_id < 0x1000) { 1003 eui[3] = vlan_id >> 8; 1004 eui[4] = vlan_id & 0xff; 1005 } else { 1006 eui[3] = 0xff; 1007 eui[4] = 0xfe; 1008 } 1009 eui[0] ^= 2; 1010 } 1011 1012 static void update_gids_task(struct work_struct *work) 1013 { 1014 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 1015 struct mlx4_cmd_mailbox *mailbox; 1016 union ib_gid *gids; 1017 int err; 1018 struct mlx4_dev *dev = gw->dev->dev; 1019 1020 mailbox = mlx4_alloc_cmd_mailbox(dev); 1021 if (IS_ERR(mailbox)) { 1022 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); 1023 return; 1024 } 1025 1026 gids = mailbox->buf; 1027 memcpy(gids, gw->gids, sizeof gw->gids); 1028 1029 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1030 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1031 MLX4_CMD_WRAPPED); 1032 if (err) 1033 pr_warn("set port command failed\n"); 1034 else { 1035 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids); 1036 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE); 1037 } 1038 1039 mlx4_free_cmd_mailbox(dev, mailbox); 1040 kfree(gw); 1041 } 1042 1043 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) 1044 { 1045 struct net_device *ndev = dev->iboe.netdevs[port - 1]; 1046 struct update_gid_work *work; 1047 struct net_device *tmp; 1048 int i; 1049 u8 *hits; 1050 int ret; 1051 union ib_gid gid; 1052 int free; 1053 int found; 1054 int need_update = 0; 1055 u16 vid; 1056 1057 work = kzalloc(sizeof *work, GFP_ATOMIC); 1058 if (!work) 1059 return -ENOMEM; 1060 1061 hits = kzalloc(128, GFP_ATOMIC); 1062 if (!hits) { 1063 ret = -ENOMEM; 1064 goto out; 1065 } 1066 1067 rcu_read_lock(); 1068 for_each_netdev_rcu(&init_net, tmp) { 1069 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) { 1070 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 1071 vid = rdma_vlan_dev_vlan_id(tmp); 1072 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev); 1073 found = 0; 1074 free = -1; 1075 for (i = 0; i < 128; ++i) { 1076 if (free < 0 && 1077 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 1078 free = i; 1079 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) { 1080 hits[i] = 1; 1081 found = 1; 1082 break; 1083 } 1084 } 1085 1086 if (!found) { 1087 if (tmp == ndev && 1088 (memcmp(&dev->iboe.gid_table[port - 1][0], 1089 &gid, sizeof gid) || 1090 !memcmp(&dev->iboe.gid_table[port - 1][0], 1091 &zgid, sizeof gid))) { 1092 dev->iboe.gid_table[port - 1][0] = gid; 1093 ++need_update; 1094 hits[0] = 1; 1095 } else if (free >= 0) { 1096 dev->iboe.gid_table[port - 1][free] = gid; 1097 hits[free] = 1; 1098 ++need_update; 1099 } 1100 } 1101 } 1102 } 1103 rcu_read_unlock(); 1104 1105 for (i = 0; i < 128; ++i) 1106 if (!hits[i]) { 1107 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 1108 ++need_update; 1109 dev->iboe.gid_table[port - 1][i] = zgid; 1110 } 1111 1112 if (need_update) { 1113 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids); 1114 INIT_WORK(&work->work, update_gids_task); 1115 work->port = port; 1116 work->dev = dev; 1117 queue_work(wq, &work->work); 1118 } else 1119 kfree(work); 1120 1121 kfree(hits); 1122 return 0; 1123 1124 out: 1125 kfree(work); 1126 return ret; 1127 } 1128 1129 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event) 1130 { 1131 switch (event) { 1132 case NETDEV_UP: 1133 case NETDEV_CHANGEADDR: 1134 update_ipv6_gids(dev, port, 0); 1135 break; 1136 1137 case NETDEV_DOWN: 1138 update_ipv6_gids(dev, port, 1); 1139 dev->iboe.netdevs[port - 1] = NULL; 1140 } 1141 } 1142 1143 static void netdev_added(struct mlx4_ib_dev *dev, int port) 1144 { 1145 update_ipv6_gids(dev, port, 0); 1146 } 1147 1148 static void netdev_removed(struct mlx4_ib_dev *dev, int port) 1149 { 1150 update_ipv6_gids(dev, port, 1); 1151 } 1152 1153 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event, 1154 void *ptr) 1155 { 1156 struct net_device *dev = ptr; 1157 struct mlx4_ib_dev *ibdev; 1158 struct net_device *oldnd; 1159 struct mlx4_ib_iboe *iboe; 1160 int port; 1161 1162 if (!net_eq(dev_net(dev), &init_net)) 1163 return NOTIFY_DONE; 1164 1165 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 1166 iboe = &ibdev->iboe; 1167 1168 spin_lock(&iboe->lock); 1169 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 1170 oldnd = iboe->netdevs[port - 1]; 1171 iboe->netdevs[port - 1] = 1172 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 1173 if (oldnd != iboe->netdevs[port - 1]) { 1174 if (iboe->netdevs[port - 1]) 1175 netdev_added(ibdev, port); 1176 else 1177 netdev_removed(ibdev, port); 1178 } 1179 } 1180 1181 if (dev == iboe->netdevs[0] || 1182 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0])) 1183 handle_en_event(ibdev, 1, event); 1184 else if (dev == iboe->netdevs[1] 1185 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1])) 1186 handle_en_event(ibdev, 2, event); 1187 1188 spin_unlock(&iboe->lock); 1189 1190 return NOTIFY_DONE; 1191 } 1192 1193 static void init_pkeys(struct mlx4_ib_dev *ibdev) 1194 { 1195 int port; 1196 int slave; 1197 int i; 1198 1199 if (mlx4_is_master(ibdev->dev)) { 1200 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) { 1201 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1202 for (i = 0; 1203 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1204 ++i) { 1205 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 1206 /* master has the identity virt2phys pkey mapping */ 1207 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 1208 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 1209 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 1210 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 1211 } 1212 } 1213 } 1214 /* initialize pkey cache */ 1215 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1216 for (i = 0; 1217 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1218 ++i) 1219 ibdev->pkeys.phys_pkey_cache[port-1][i] = 1220 (i) ? 0 : 0xFFFF; 1221 } 1222 } 1223 } 1224 1225 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1226 { 1227 char name[32]; 1228 int eq_per_port = 0; 1229 int added_eqs = 0; 1230 int total_eqs = 0; 1231 int i, j, eq; 1232 1233 /* Legacy mode or comp_pool is not large enough */ 1234 if (dev->caps.comp_pool == 0 || 1235 dev->caps.num_ports > dev->caps.comp_pool) 1236 return; 1237 1238 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/ 1239 dev->caps.num_ports); 1240 1241 /* Init eq table */ 1242 added_eqs = 0; 1243 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 1244 added_eqs += eq_per_port; 1245 1246 total_eqs = dev->caps.num_comp_vectors + added_eqs; 1247 1248 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); 1249 if (!ibdev->eq_table) 1250 return; 1251 1252 ibdev->eq_added = added_eqs; 1253 1254 eq = 0; 1255 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { 1256 for (j = 0; j < eq_per_port; j++) { 1257 sprintf(name, "mlx4-ib-%d-%d@%s", 1258 i, j, dev->pdev->bus->name); 1259 /* Set IRQ for specific name (per ring) */ 1260 if (mlx4_assign_eq(dev, name, NULL, 1261 &ibdev->eq_table[eq])) { 1262 /* Use legacy (same as mlx4_en driver) */ 1263 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); 1264 ibdev->eq_table[eq] = 1265 (eq % dev->caps.num_comp_vectors); 1266 } 1267 eq++; 1268 } 1269 } 1270 1271 /* Fill the reset of the vector with legacy EQ */ 1272 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) 1273 ibdev->eq_table[eq++] = i; 1274 1275 /* Advertise the new number of EQs to clients */ 1276 ibdev->ib_dev.num_comp_vectors = total_eqs; 1277 } 1278 1279 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1280 { 1281 int i; 1282 1283 /* no additional eqs were added */ 1284 if (!ibdev->eq_table) 1285 return; 1286 1287 /* Reset the advertised EQ number */ 1288 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1289 1290 /* Free only the added eqs */ 1291 for (i = 0; i < ibdev->eq_added; i++) { 1292 /* Don't free legacy eqs if used */ 1293 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) 1294 continue; 1295 mlx4_release_eq(dev, ibdev->eq_table[i]); 1296 } 1297 1298 kfree(ibdev->eq_table); 1299 } 1300 1301 static void *mlx4_ib_add(struct mlx4_dev *dev) 1302 { 1303 struct mlx4_ib_dev *ibdev; 1304 int num_ports = 0; 1305 int i, j; 1306 int err; 1307 struct mlx4_ib_iboe *iboe; 1308 1309 pr_info_once("%s", mlx4_ib_version); 1310 1311 mlx4_foreach_non_ib_transport_port(i, dev) 1312 num_ports++; 1313 1314 if (mlx4_is_mfunc(dev) && num_ports) { 1315 dev_err(&dev->pdev->dev, "RoCE is not supported over SRIOV as yet\n"); 1316 return NULL; 1317 } 1318 1319 num_ports = 0; 1320 mlx4_foreach_ib_transport_port(i, dev) 1321 num_ports++; 1322 1323 /* No point in registering a device with no ports... */ 1324 if (num_ports == 0) 1325 return NULL; 1326 1327 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 1328 if (!ibdev) { 1329 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 1330 return NULL; 1331 } 1332 1333 iboe = &ibdev->iboe; 1334 1335 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 1336 goto err_dealloc; 1337 1338 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 1339 goto err_pd; 1340 1341 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 1342 PAGE_SIZE); 1343 if (!ibdev->uar_map) 1344 goto err_uar; 1345 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 1346 1347 ibdev->dev = dev; 1348 1349 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 1350 ibdev->ib_dev.owner = THIS_MODULE; 1351 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 1352 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 1353 ibdev->num_ports = num_ports; 1354 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; 1355 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1356 ibdev->ib_dev.dma_device = &dev->pdev->dev; 1357 1358 if (dev->caps.userspace_caps) 1359 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 1360 else 1361 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 1362 1363 ibdev->ib_dev.uverbs_cmd_mask = 1364 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1365 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1366 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1367 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1368 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1369 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1370 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1371 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1372 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1373 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1374 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1375 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1376 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1377 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1378 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1379 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1380 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 1381 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1382 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1383 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1384 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 1385 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 1386 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 1387 1388 ibdev->ib_dev.query_device = mlx4_ib_query_device; 1389 ibdev->ib_dev.query_port = mlx4_ib_query_port; 1390 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 1391 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 1392 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 1393 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 1394 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 1395 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 1396 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 1397 ibdev->ib_dev.mmap = mlx4_ib_mmap; 1398 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 1399 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 1400 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 1401 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 1402 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 1403 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 1404 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 1405 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 1406 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 1407 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 1408 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 1409 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 1410 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 1411 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 1412 ibdev->ib_dev.post_send = mlx4_ib_post_send; 1413 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 1414 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 1415 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 1416 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 1417 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 1418 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 1419 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 1420 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 1421 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 1422 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 1423 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 1424 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 1425 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 1426 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 1427 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 1428 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 1429 1430 if (!mlx4_is_slave(ibdev->dev)) { 1431 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 1432 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 1433 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 1434 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 1435 } 1436 1437 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 1438 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 1439 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 1440 ibdev->ib_dev.uverbs_cmd_mask |= 1441 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 1442 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 1443 } 1444 1445 mlx4_ib_alloc_eqs(dev, ibdev); 1446 1447 spin_lock_init(&iboe->lock); 1448 1449 if (init_node_data(ibdev)) 1450 goto err_map; 1451 1452 for (i = 0; i < ibdev->num_ports; ++i) { 1453 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 1454 IB_LINK_LAYER_ETHERNET) { 1455 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); 1456 if (err) 1457 ibdev->counters[i] = -1; 1458 } else 1459 ibdev->counters[i] = -1; 1460 } 1461 1462 spin_lock_init(&ibdev->sm_lock); 1463 mutex_init(&ibdev->cap_mask_mutex); 1464 1465 if (ib_register_device(&ibdev->ib_dev, NULL)) 1466 goto err_counter; 1467 1468 if (mlx4_ib_mad_init(ibdev)) 1469 goto err_reg; 1470 1471 if (mlx4_ib_init_sriov(ibdev)) 1472 goto err_mad; 1473 1474 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) { 1475 iboe->nb.notifier_call = mlx4_ib_netdev_event; 1476 err = register_netdevice_notifier(&iboe->nb); 1477 if (err) 1478 goto err_sriov; 1479 } 1480 1481 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 1482 if (device_create_file(&ibdev->ib_dev.dev, 1483 mlx4_class_attributes[j])) 1484 goto err_notif; 1485 } 1486 1487 ibdev->ib_active = true; 1488 1489 if (mlx4_is_mfunc(ibdev->dev)) 1490 init_pkeys(ibdev); 1491 1492 /* create paravirt contexts for any VFs which are active */ 1493 if (mlx4_is_master(ibdev->dev)) { 1494 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 1495 if (j == mlx4_master_func_num(ibdev->dev)) 1496 continue; 1497 if (mlx4_is_slave_active(ibdev->dev, j)) 1498 do_slave_init(ibdev, j, 1); 1499 } 1500 } 1501 return ibdev; 1502 1503 err_notif: 1504 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1505 pr_warn("failure unregistering notifier\n"); 1506 flush_workqueue(wq); 1507 1508 err_sriov: 1509 mlx4_ib_close_sriov(ibdev); 1510 1511 err_mad: 1512 mlx4_ib_mad_cleanup(ibdev); 1513 1514 err_reg: 1515 ib_unregister_device(&ibdev->ib_dev); 1516 1517 err_counter: 1518 for (; i; --i) 1519 if (ibdev->counters[i - 1] != -1) 1520 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 1521 1522 err_map: 1523 iounmap(ibdev->uar_map); 1524 1525 err_uar: 1526 mlx4_uar_free(dev, &ibdev->priv_uar); 1527 1528 err_pd: 1529 mlx4_pd_free(dev, ibdev->priv_pdn); 1530 1531 err_dealloc: 1532 ib_dealloc_device(&ibdev->ib_dev); 1533 1534 return NULL; 1535 } 1536 1537 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 1538 { 1539 struct mlx4_ib_dev *ibdev = ibdev_ptr; 1540 int p; 1541 1542 mlx4_ib_close_sriov(ibdev); 1543 mlx4_ib_mad_cleanup(ibdev); 1544 ib_unregister_device(&ibdev->ib_dev); 1545 if (ibdev->iboe.nb.notifier_call) { 1546 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1547 pr_warn("failure unregistering notifier\n"); 1548 ibdev->iboe.nb.notifier_call = NULL; 1549 } 1550 iounmap(ibdev->uar_map); 1551 for (p = 0; p < ibdev->num_ports; ++p) 1552 if (ibdev->counters[p] != -1) 1553 mlx4_counter_free(ibdev->dev, ibdev->counters[p]); 1554 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 1555 mlx4_CLOSE_PORT(dev, p); 1556 1557 mlx4_ib_free_eqs(dev, ibdev); 1558 1559 mlx4_uar_free(dev, &ibdev->priv_uar); 1560 mlx4_pd_free(dev, ibdev->priv_pdn); 1561 ib_dealloc_device(&ibdev->ib_dev); 1562 } 1563 1564 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 1565 { 1566 struct mlx4_ib_demux_work **dm = NULL; 1567 struct mlx4_dev *dev = ibdev->dev; 1568 int i; 1569 unsigned long flags; 1570 1571 if (!mlx4_is_master(dev)) 1572 return; 1573 1574 dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC); 1575 if (!dm) { 1576 pr_err("failed to allocate memory for tunneling qp update\n"); 1577 goto out; 1578 } 1579 1580 for (i = 0; i < dev->caps.num_ports; i++) { 1581 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 1582 if (!dm[i]) { 1583 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 1584 for (i = 0; i < dev->caps.num_ports; i++) { 1585 if (dm[i]) 1586 kfree(dm[i]); 1587 } 1588 goto out; 1589 } 1590 } 1591 /* initialize or tear down tunnel QPs for the slave */ 1592 for (i = 0; i < dev->caps.num_ports; i++) { 1593 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 1594 dm[i]->port = i + 1; 1595 dm[i]->slave = slave; 1596 dm[i]->do_init = do_init; 1597 dm[i]->dev = ibdev; 1598 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 1599 if (!ibdev->sriov.is_going_down) 1600 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 1601 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 1602 } 1603 out: 1604 if (dm) 1605 kfree(dm); 1606 return; 1607 } 1608 1609 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 1610 enum mlx4_dev_event event, unsigned long param) 1611 { 1612 struct ib_event ibev; 1613 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 1614 struct mlx4_eqe *eqe = NULL; 1615 struct ib_event_work *ew; 1616 int p = 0; 1617 1618 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 1619 eqe = (struct mlx4_eqe *)param; 1620 else 1621 p = (int) param; 1622 1623 switch (event) { 1624 case MLX4_DEV_EVENT_PORT_UP: 1625 if (p > ibdev->num_ports) 1626 return; 1627 if (mlx4_is_master(dev) && 1628 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 1629 IB_LINK_LAYER_INFINIBAND) { 1630 mlx4_ib_invalidate_all_guid_record(ibdev, p); 1631 } 1632 ibev.event = IB_EVENT_PORT_ACTIVE; 1633 break; 1634 1635 case MLX4_DEV_EVENT_PORT_DOWN: 1636 if (p > ibdev->num_ports) 1637 return; 1638 ibev.event = IB_EVENT_PORT_ERR; 1639 break; 1640 1641 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 1642 ibdev->ib_active = false; 1643 ibev.event = IB_EVENT_DEVICE_FATAL; 1644 break; 1645 1646 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 1647 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 1648 if (!ew) { 1649 pr_err("failed to allocate memory for events work\n"); 1650 break; 1651 } 1652 1653 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 1654 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 1655 ew->ib_dev = ibdev; 1656 /* need to queue only for port owner, which uses GEN_EQE */ 1657 if (mlx4_is_master(dev)) 1658 queue_work(wq, &ew->work); 1659 else 1660 handle_port_mgmt_change_event(&ew->work); 1661 return; 1662 1663 case MLX4_DEV_EVENT_SLAVE_INIT: 1664 /* here, p is the slave id */ 1665 do_slave_init(ibdev, p, 1); 1666 return; 1667 1668 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 1669 /* here, p is the slave id */ 1670 do_slave_init(ibdev, p, 0); 1671 return; 1672 1673 default: 1674 return; 1675 } 1676 1677 ibev.device = ibdev_ptr; 1678 ibev.element.port_num = (u8) p; 1679 1680 ib_dispatch_event(&ibev); 1681 } 1682 1683 static struct mlx4_interface mlx4_ib_interface = { 1684 .add = mlx4_ib_add, 1685 .remove = mlx4_ib_remove, 1686 .event = mlx4_ib_event, 1687 .protocol = MLX4_PROT_IB_IPV6 1688 }; 1689 1690 static int __init mlx4_ib_init(void) 1691 { 1692 int err; 1693 1694 wq = create_singlethread_workqueue("mlx4_ib"); 1695 if (!wq) 1696 return -ENOMEM; 1697 1698 err = mlx4_ib_mcg_init(); 1699 if (err) 1700 goto clean_wq; 1701 1702 err = mlx4_register_interface(&mlx4_ib_interface); 1703 if (err) 1704 goto clean_mcg; 1705 1706 return 0; 1707 1708 clean_mcg: 1709 mlx4_ib_mcg_destroy(); 1710 1711 clean_wq: 1712 destroy_workqueue(wq); 1713 return err; 1714 } 1715 1716 static void __exit mlx4_ib_cleanup(void) 1717 { 1718 mlx4_unregister_interface(&mlx4_ib_interface); 1719 mlx4_ib_mcg_destroy(); 1720 destroy_workqueue(wq); 1721 } 1722 1723 module_init(mlx4_ib_init); 1724 module_exit(mlx4_ib_cleanup); 1725