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 64MODULE_AUTHOR("Roland Dreier"); 65MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 66MODULE_LICENSE("Dual BSD/GPL"); 67MODULE_VERSION(DRV_VERSION); 68 69int mlx4_ib_sm_guid_assign = 0; 70module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 71MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)"); 72 73static const char mlx4_ib_version[] = 74 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 75 DRV_VERSION " (" DRV_RELDATE ")\n"; 76 77struct 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 84static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 85 86static struct workqueue_struct *wq; 87 88static 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 96static union ib_gid zgid; 97 98static 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 123static 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 134static 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 233out: 234 kfree(in_mad); 235 kfree(out_mad); 236 237 return err; 238} 239 240static enum rdma_link_layer 241mlx4_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 249static 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 333out: 334 kfree(in_mad); 335 kfree(out_mad); 336 return err; 337} 338 339static u8 state_to_phys_state(enum ib_port_state state) 340{ 341 return state == IB_PORT_ACTIVE ? 5 : 3; 342} 343 344static 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); 393out_unlock: 394 spin_unlock_bh(&iboe->lock); 395 if (is_bonded) 396 rtnl_unlock(); 397out: 398 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 399 return err; 400} 401 402int __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 416static 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 423int __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 471out: 472 if (clear) 473 memset(gid->raw + 8, 0, 8); 474 kfree(in_mad); 475 kfree(out_mad); 476 return err; 477} 478 479static 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 489static 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 498int __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 525out: 526 kfree(in_mad); 527 kfree(out_mad); 528 return err; 529} 530 531static 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 536static 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 572static 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, MLX4_SET_PORT_IB_OPCODE, 591 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 592 MLX4_CMD_WRAPPED); 593 594 mlx4_free_cmd_mailbox(dev->dev, mailbox); 595 return err; 596} 597 598static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 599 struct ib_port_modify *props) 600{ 601 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 602 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 603 struct ib_port_attr attr; 604 u32 cap_mask; 605 int err; 606 607 /* return OK if this is RoCE. CM calls ib_modify_port() regardless 608 * of whether port link layer is ETH or IB. For ETH ports, qkey 609 * violations and port capabilities are not meaningful. 610 */ 611 if (is_eth) 612 return 0; 613 614 mutex_lock(&mdev->cap_mask_mutex); 615 616 err = mlx4_ib_query_port(ibdev, port, &attr); 617 if (err) 618 goto out; 619 620 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 621 ~props->clr_port_cap_mask; 622 623 err = mlx4_ib_SET_PORT(mdev, port, 624 !!(mask & IB_PORT_RESET_QKEY_CNTR), 625 cap_mask); 626 627out: 628 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 629 return err; 630} 631 632static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 633 struct ib_udata *udata) 634{ 635 struct mlx4_ib_dev *dev = to_mdev(ibdev); 636 struct mlx4_ib_ucontext *context; 637 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 638 struct mlx4_ib_alloc_ucontext_resp resp; 639 int err; 640 641 if (!dev->ib_active) 642 return ERR_PTR(-EAGAIN); 643 644 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 645 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 646 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 647 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 648 } else { 649 resp.dev_caps = dev->dev->caps.userspace_caps; 650 resp.qp_tab_size = dev->dev->caps.num_qps; 651 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 652 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 653 resp.cqe_size = dev->dev->caps.cqe_size; 654 } 655 656 context = kmalloc(sizeof *context, GFP_KERNEL); 657 if (!context) 658 return ERR_PTR(-ENOMEM); 659 660 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 661 if (err) { 662 kfree(context); 663 return ERR_PTR(err); 664 } 665 666 INIT_LIST_HEAD(&context->db_page_list); 667 mutex_init(&context->db_page_mutex); 668 669 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 670 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 671 else 672 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 673 674 if (err) { 675 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 676 kfree(context); 677 return ERR_PTR(-EFAULT); 678 } 679 680 return &context->ibucontext; 681} 682 683static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 684{ 685 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 686 687 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 688 kfree(context); 689 690 return 0; 691} 692 693static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 694{ 695 struct mlx4_ib_dev *dev = to_mdev(context->device); 696 697 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 698 return -EINVAL; 699 700 if (vma->vm_pgoff == 0) { 701 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 702 703 if (io_remap_pfn_range(vma, vma->vm_start, 704 to_mucontext(context)->uar.pfn, 705 PAGE_SIZE, vma->vm_page_prot)) 706 return -EAGAIN; 707 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 708 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 709 710 if (io_remap_pfn_range(vma, vma->vm_start, 711 to_mucontext(context)->uar.pfn + 712 dev->dev->caps.num_uars, 713 PAGE_SIZE, vma->vm_page_prot)) 714 return -EAGAIN; 715 } else 716 return -EINVAL; 717 718 return 0; 719} 720 721static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 722 struct ib_ucontext *context, 723 struct ib_udata *udata) 724{ 725 struct mlx4_ib_pd *pd; 726 int err; 727 728 pd = kmalloc(sizeof *pd, GFP_KERNEL); 729 if (!pd) 730 return ERR_PTR(-ENOMEM); 731 732 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 733 if (err) { 734 kfree(pd); 735 return ERR_PTR(err); 736 } 737 738 if (context) 739 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 740 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 741 kfree(pd); 742 return ERR_PTR(-EFAULT); 743 } 744 745 return &pd->ibpd; 746} 747 748static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 749{ 750 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 751 kfree(pd); 752 753 return 0; 754} 755 756static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 757 struct ib_ucontext *context, 758 struct ib_udata *udata) 759{ 760 struct mlx4_ib_xrcd *xrcd; 761 int err; 762 763 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 764 return ERR_PTR(-ENOSYS); 765 766 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 767 if (!xrcd) 768 return ERR_PTR(-ENOMEM); 769 770 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 771 if (err) 772 goto err1; 773 774 xrcd->pd = ib_alloc_pd(ibdev); 775 if (IS_ERR(xrcd->pd)) { 776 err = PTR_ERR(xrcd->pd); 777 goto err2; 778 } 779 780 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 781 if (IS_ERR(xrcd->cq)) { 782 err = PTR_ERR(xrcd->cq); 783 goto err3; 784 } 785 786 return &xrcd->ibxrcd; 787 788err3: 789 ib_dealloc_pd(xrcd->pd); 790err2: 791 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 792err1: 793 kfree(xrcd); 794 return ERR_PTR(err); 795} 796 797static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 798{ 799 ib_destroy_cq(to_mxrcd(xrcd)->cq); 800 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 801 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 802 kfree(xrcd); 803 804 return 0; 805} 806 807static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 808{ 809 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 810 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 811 struct mlx4_ib_gid_entry *ge; 812 813 ge = kzalloc(sizeof *ge, GFP_KERNEL); 814 if (!ge) 815 return -ENOMEM; 816 817 ge->gid = *gid; 818 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 819 ge->port = mqp->port; 820 ge->added = 1; 821 } 822 823 mutex_lock(&mqp->mutex); 824 list_add_tail(&ge->list, &mqp->gid_list); 825 mutex_unlock(&mqp->mutex); 826 827 return 0; 828} 829 830int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 831 union ib_gid *gid) 832{ 833 struct net_device *ndev; 834 int ret = 0; 835 836 if (!mqp->port) 837 return 0; 838 839 spin_lock_bh(&mdev->iboe.lock); 840 ndev = mdev->iboe.netdevs[mqp->port - 1]; 841 if (ndev) 842 dev_hold(ndev); 843 spin_unlock_bh(&mdev->iboe.lock); 844 845 if (ndev) { 846 ret = 1; 847 dev_put(ndev); 848 } 849 850 return ret; 851} 852 853struct mlx4_ib_steering { 854 struct list_head list; 855 struct mlx4_flow_reg_id reg_id; 856 union ib_gid gid; 857}; 858 859static int parse_flow_attr(struct mlx4_dev *dev, 860 u32 qp_num, 861 union ib_flow_spec *ib_spec, 862 struct _rule_hw *mlx4_spec) 863{ 864 enum mlx4_net_trans_rule_id type; 865 866 switch (ib_spec->type) { 867 case IB_FLOW_SPEC_ETH: 868 type = MLX4_NET_TRANS_RULE_ID_ETH; 869 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 870 ETH_ALEN); 871 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 872 ETH_ALEN); 873 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 874 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 875 break; 876 case IB_FLOW_SPEC_IB: 877 type = MLX4_NET_TRANS_RULE_ID_IB; 878 mlx4_spec->ib.l3_qpn = 879 cpu_to_be32(qp_num); 880 mlx4_spec->ib.qpn_mask = 881 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 882 break; 883 884 885 case IB_FLOW_SPEC_IPV4: 886 type = MLX4_NET_TRANS_RULE_ID_IPV4; 887 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 888 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 889 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 890 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 891 break; 892 893 case IB_FLOW_SPEC_TCP: 894 case IB_FLOW_SPEC_UDP: 895 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 896 MLX4_NET_TRANS_RULE_ID_TCP : 897 MLX4_NET_TRANS_RULE_ID_UDP; 898 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 899 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 900 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 901 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 902 break; 903 904 default: 905 return -EINVAL; 906 } 907 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 908 mlx4_hw_rule_sz(dev, type) < 0) 909 return -EINVAL; 910 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 911 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 912 return mlx4_hw_rule_sz(dev, type); 913} 914 915struct default_rules { 916 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 917 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 918 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 919 __u8 link_layer; 920}; 921static const struct default_rules default_table[] = { 922 { 923 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 924 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 925 .rules_create_list = {IB_FLOW_SPEC_IB}, 926 .link_layer = IB_LINK_LAYER_INFINIBAND 927 } 928}; 929 930static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 931 struct ib_flow_attr *flow_attr) 932{ 933 int i, j, k; 934 void *ib_flow; 935 const struct default_rules *pdefault_rules = default_table; 936 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 937 938 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 939 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 940 memset(&field_types, 0, sizeof(field_types)); 941 942 if (link_layer != pdefault_rules->link_layer) 943 continue; 944 945 ib_flow = flow_attr + 1; 946 /* we assume the specs are sorted */ 947 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 948 j < flow_attr->num_of_specs; k++) { 949 union ib_flow_spec *current_flow = 950 (union ib_flow_spec *)ib_flow; 951 952 /* same layer but different type */ 953 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 954 (pdefault_rules->mandatory_fields[k] & 955 IB_FLOW_SPEC_LAYER_MASK)) && 956 (current_flow->type != 957 pdefault_rules->mandatory_fields[k])) 958 goto out; 959 960 /* same layer, try match next one */ 961 if (current_flow->type == 962 pdefault_rules->mandatory_fields[k]) { 963 j++; 964 ib_flow += 965 ((union ib_flow_spec *)ib_flow)->size; 966 } 967 } 968 969 ib_flow = flow_attr + 1; 970 for (j = 0; j < flow_attr->num_of_specs; 971 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 972 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 973 /* same layer and same type */ 974 if (((union ib_flow_spec *)ib_flow)->type == 975 pdefault_rules->mandatory_not_fields[k]) 976 goto out; 977 978 return i; 979 } 980out: 981 return -1; 982} 983 984static int __mlx4_ib_create_default_rules( 985 struct mlx4_ib_dev *mdev, 986 struct ib_qp *qp, 987 const struct default_rules *pdefault_rules, 988 struct _rule_hw *mlx4_spec) { 989 int size = 0; 990 int i; 991 992 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 993 int ret; 994 union ib_flow_spec ib_spec; 995 switch (pdefault_rules->rules_create_list[i]) { 996 case 0: 997 /* no rule */ 998 continue; 999 case IB_FLOW_SPEC_IB: 1000 ib_spec.type = IB_FLOW_SPEC_IB; 1001 ib_spec.size = sizeof(struct ib_flow_spec_ib); 1002 1003 break; 1004 default: 1005 /* invalid rule */ 1006 return -EINVAL; 1007 } 1008 /* We must put empty rule, qpn is being ignored */ 1009 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1010 mlx4_spec); 1011 if (ret < 0) { 1012 pr_info("invalid parsing\n"); 1013 return -EINVAL; 1014 } 1015 1016 mlx4_spec = (void *)mlx4_spec + ret; 1017 size += ret; 1018 } 1019 return size; 1020} 1021 1022static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1023 int domain, 1024 enum mlx4_net_trans_promisc_mode flow_type, 1025 u64 *reg_id) 1026{ 1027 int ret, i; 1028 int size = 0; 1029 void *ib_flow; 1030 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1031 struct mlx4_cmd_mailbox *mailbox; 1032 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1033 int default_flow; 1034 1035 static const u16 __mlx4_domain[] = { 1036 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 1037 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 1038 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 1039 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 1040 }; 1041 1042 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1043 pr_err("Invalid priority value %d\n", flow_attr->priority); 1044 return -EINVAL; 1045 } 1046 1047 if (domain >= IB_FLOW_DOMAIN_NUM) { 1048 pr_err("Invalid domain value %d\n", domain); 1049 return -EINVAL; 1050 } 1051 1052 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1053 return -EINVAL; 1054 1055 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1056 if (IS_ERR(mailbox)) 1057 return PTR_ERR(mailbox); 1058 ctrl = mailbox->buf; 1059 1060 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 1061 flow_attr->priority); 1062 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1063 ctrl->port = flow_attr->port; 1064 ctrl->qpn = cpu_to_be32(qp->qp_num); 1065 1066 ib_flow = flow_attr + 1; 1067 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1068 /* Add default flows */ 1069 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1070 if (default_flow >= 0) { 1071 ret = __mlx4_ib_create_default_rules( 1072 mdev, qp, default_table + default_flow, 1073 mailbox->buf + size); 1074 if (ret < 0) { 1075 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1076 return -EINVAL; 1077 } 1078 size += ret; 1079 } 1080 for (i = 0; i < flow_attr->num_of_specs; i++) { 1081 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1082 mailbox->buf + size); 1083 if (ret < 0) { 1084 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1085 return -EINVAL; 1086 } 1087 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1088 size += ret; 1089 } 1090 1091 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1092 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1093 MLX4_CMD_NATIVE); 1094 if (ret == -ENOMEM) 1095 pr_err("mcg table is full. Fail to register network rule.\n"); 1096 else if (ret == -ENXIO) 1097 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1098 else if (ret) 1099 pr_err("Invalid argumant. Fail to register network rule.\n"); 1100 1101 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1102 return ret; 1103} 1104 1105static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1106{ 1107 int err; 1108 err = mlx4_cmd(dev, reg_id, 0, 0, 1109 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1110 MLX4_CMD_NATIVE); 1111 if (err) 1112 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1113 reg_id); 1114 return err; 1115} 1116 1117static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1118 u64 *reg_id) 1119{ 1120 void *ib_flow; 1121 union ib_flow_spec *ib_spec; 1122 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1123 int err = 0; 1124 1125 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 1126 dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 1127 return 0; /* do nothing */ 1128 1129 ib_flow = flow_attr + 1; 1130 ib_spec = (union ib_flow_spec *)ib_flow; 1131 1132 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1133 return 0; /* do nothing */ 1134 1135 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1136 flow_attr->port, qp->qp_num, 1137 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1138 reg_id); 1139 return err; 1140} 1141 1142static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1143 struct ib_flow_attr *flow_attr, 1144 int domain) 1145{ 1146 int err = 0, i = 0, j = 0; 1147 struct mlx4_ib_flow *mflow; 1148 enum mlx4_net_trans_promisc_mode type[2]; 1149 struct mlx4_dev *dev = (to_mdev(qp->device))->dev; 1150 int is_bonded = mlx4_is_bonded(dev); 1151 1152 memset(type, 0, sizeof(type)); 1153 1154 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1155 if (!mflow) { 1156 err = -ENOMEM; 1157 goto err_free; 1158 } 1159 1160 switch (flow_attr->type) { 1161 case IB_FLOW_ATTR_NORMAL: 1162 type[0] = MLX4_FS_REGULAR; 1163 break; 1164 1165 case IB_FLOW_ATTR_ALL_DEFAULT: 1166 type[0] = MLX4_FS_ALL_DEFAULT; 1167 break; 1168 1169 case IB_FLOW_ATTR_MC_DEFAULT: 1170 type[0] = MLX4_FS_MC_DEFAULT; 1171 break; 1172 1173 case IB_FLOW_ATTR_SNIFFER: 1174 type[0] = MLX4_FS_UC_SNIFFER; 1175 type[1] = MLX4_FS_MC_SNIFFER; 1176 break; 1177 1178 default: 1179 err = -EINVAL; 1180 goto err_free; 1181 } 1182 1183 while (i < ARRAY_SIZE(type) && type[i]) { 1184 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 1185 &mflow->reg_id[i].id); 1186 if (err) 1187 goto err_create_flow; 1188 i++; 1189 if (is_bonded) { 1190 /* Application always sees one port so the mirror rule 1191 * must be on port #2 1192 */ 1193 flow_attr->port = 2; 1194 err = __mlx4_ib_create_flow(qp, flow_attr, 1195 domain, type[j], 1196 &mflow->reg_id[j].mirror); 1197 flow_attr->port = 1; 1198 if (err) 1199 goto err_create_flow; 1200 j++; 1201 } 1202 1203 } 1204 1205 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1206 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1207 &mflow->reg_id[i].id); 1208 if (err) 1209 goto err_create_flow; 1210 i++; 1211 if (is_bonded) { 1212 flow_attr->port = 2; 1213 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, 1214 &mflow->reg_id[j].mirror); 1215 flow_attr->port = 1; 1216 if (err) 1217 goto err_create_flow; 1218 j++; 1219 } 1220 /* function to create mirror rule */ 1221 } 1222 1223 return &mflow->ibflow; 1224 1225err_create_flow: 1226 while (i) { 1227 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1228 mflow->reg_id[i].id); 1229 i--; 1230 } 1231 1232 while (j) { 1233 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, 1234 mflow->reg_id[j].mirror); 1235 j--; 1236 } 1237err_free: 1238 kfree(mflow); 1239 return ERR_PTR(err); 1240} 1241 1242static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1243{ 1244 int err, ret = 0; 1245 int i = 0; 1246 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1247 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1248 1249 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { 1250 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); 1251 if (err) 1252 ret = err; 1253 if (mflow->reg_id[i].mirror) { 1254 err = __mlx4_ib_destroy_flow(mdev->dev, 1255 mflow->reg_id[i].mirror); 1256 if (err) 1257 ret = err; 1258 } 1259 i++; 1260 } 1261 1262 kfree(mflow); 1263 return ret; 1264} 1265 1266static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1267{ 1268 int err; 1269 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1270 struct mlx4_dev *dev = mdev->dev; 1271 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1272 struct mlx4_ib_steering *ib_steering = NULL; 1273 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1274 struct mlx4_flow_reg_id reg_id; 1275 1276 if (mdev->dev->caps.steering_mode == 1277 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1278 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1279 if (!ib_steering) 1280 return -ENOMEM; 1281 } 1282 1283 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1284 !!(mqp->flags & 1285 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1286 prot, ®_id.id); 1287 if (err) { 1288 pr_err("multicast attach op failed, err %d\n", err); 1289 goto err_malloc; 1290 } 1291 1292 reg_id.mirror = 0; 1293 if (mlx4_is_bonded(dev)) { 1294 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, 1295 (mqp->port == 1) ? 2 : 1, 1296 !!(mqp->flags & 1297 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1298 prot, ®_id.mirror); 1299 if (err) 1300 goto err_add; 1301 } 1302 1303 err = add_gid_entry(ibqp, gid); 1304 if (err) 1305 goto err_add; 1306 1307 if (ib_steering) { 1308 memcpy(ib_steering->gid.raw, gid->raw, 16); 1309 ib_steering->reg_id = reg_id; 1310 mutex_lock(&mqp->mutex); 1311 list_add(&ib_steering->list, &mqp->steering_rules); 1312 mutex_unlock(&mqp->mutex); 1313 } 1314 return 0; 1315 1316err_add: 1317 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1318 prot, reg_id.id); 1319 if (reg_id.mirror) 1320 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1321 prot, reg_id.mirror); 1322err_malloc: 1323 kfree(ib_steering); 1324 1325 return err; 1326} 1327 1328static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1329{ 1330 struct mlx4_ib_gid_entry *ge; 1331 struct mlx4_ib_gid_entry *tmp; 1332 struct mlx4_ib_gid_entry *ret = NULL; 1333 1334 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1335 if (!memcmp(raw, ge->gid.raw, 16)) { 1336 ret = ge; 1337 break; 1338 } 1339 } 1340 1341 return ret; 1342} 1343 1344static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1345{ 1346 int err; 1347 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1348 struct mlx4_dev *dev = mdev->dev; 1349 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1350 struct net_device *ndev; 1351 struct mlx4_ib_gid_entry *ge; 1352 struct mlx4_flow_reg_id reg_id = {0, 0}; 1353 enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; 1354 1355 if (mdev->dev->caps.steering_mode == 1356 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1357 struct mlx4_ib_steering *ib_steering; 1358 1359 mutex_lock(&mqp->mutex); 1360 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1361 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1362 list_del(&ib_steering->list); 1363 break; 1364 } 1365 } 1366 mutex_unlock(&mqp->mutex); 1367 if (&ib_steering->list == &mqp->steering_rules) { 1368 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1369 return -EINVAL; 1370 } 1371 reg_id = ib_steering->reg_id; 1372 kfree(ib_steering); 1373 } 1374 1375 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1376 prot, reg_id.id); 1377 if (err) 1378 return err; 1379 1380 if (mlx4_is_bonded(dev)) { 1381 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1382 prot, reg_id.mirror); 1383 if (err) 1384 return err; 1385 } 1386 1387 mutex_lock(&mqp->mutex); 1388 ge = find_gid_entry(mqp, gid->raw); 1389 if (ge) { 1390 spin_lock_bh(&mdev->iboe.lock); 1391 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1392 if (ndev) 1393 dev_hold(ndev); 1394 spin_unlock_bh(&mdev->iboe.lock); 1395 if (ndev) 1396 dev_put(ndev); 1397 list_del(&ge->list); 1398 kfree(ge); 1399 } else 1400 pr_warn("could not find mgid entry\n"); 1401 1402 mutex_unlock(&mqp->mutex); 1403 1404 return 0; 1405} 1406 1407static int init_node_data(struct mlx4_ib_dev *dev) 1408{ 1409 struct ib_smp *in_mad = NULL; 1410 struct ib_smp *out_mad = NULL; 1411 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1412 int err = -ENOMEM; 1413 1414 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1415 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1416 if (!in_mad || !out_mad) 1417 goto out; 1418 1419 init_query_mad(in_mad); 1420 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1421 if (mlx4_is_master(dev->dev)) 1422 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1423 1424 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1425 if (err) 1426 goto out; 1427 1428 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1429 1430 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1431 1432 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1433 if (err) 1434 goto out; 1435 1436 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1437 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1438 1439out: 1440 kfree(in_mad); 1441 kfree(out_mad); 1442 return err; 1443} 1444 1445static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1446 char *buf) 1447{ 1448 struct mlx4_ib_dev *dev = 1449 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1450 return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device); 1451} 1452 1453static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1454 char *buf) 1455{ 1456 struct mlx4_ib_dev *dev = 1457 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1458 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 1459 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 1460 (int) dev->dev->caps.fw_ver & 0xffff); 1461} 1462 1463static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1464 char *buf) 1465{ 1466 struct mlx4_ib_dev *dev = 1467 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1468 return sprintf(buf, "%x\n", dev->dev->rev_id); 1469} 1470 1471static ssize_t show_board(struct device *device, struct device_attribute *attr, 1472 char *buf) 1473{ 1474 struct mlx4_ib_dev *dev = 1475 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1476 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 1477 dev->dev->board_id); 1478} 1479 1480static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1481static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1482static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1483static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1484 1485static struct device_attribute *mlx4_class_attributes[] = { 1486 &dev_attr_hw_rev, 1487 &dev_attr_fw_ver, 1488 &dev_attr_hca_type, 1489 &dev_attr_board_id 1490}; 1491 1492static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, 1493 struct net_device *dev) 1494{ 1495 memcpy(eui, dev->dev_addr, 3); 1496 memcpy(eui + 5, dev->dev_addr + 3, 3); 1497 if (vlan_id < 0x1000) { 1498 eui[3] = vlan_id >> 8; 1499 eui[4] = vlan_id & 0xff; 1500 } else { 1501 eui[3] = 0xff; 1502 eui[4] = 0xfe; 1503 } 1504 eui[0] ^= 2; 1505} 1506 1507static void update_gids_task(struct work_struct *work) 1508{ 1509 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 1510 struct mlx4_cmd_mailbox *mailbox; 1511 union ib_gid *gids; 1512 int err; 1513 struct mlx4_dev *dev = gw->dev->dev; 1514 int is_bonded = mlx4_is_bonded(dev); 1515 1516 if (!gw->dev->ib_active) 1517 return; 1518 1519 mailbox = mlx4_alloc_cmd_mailbox(dev); 1520 if (IS_ERR(mailbox)) { 1521 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); 1522 return; 1523 } 1524 1525 gids = mailbox->buf; 1526 memcpy(gids, gw->gids, sizeof gw->gids); 1527 1528 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1529 MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT, 1530 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); 1531 if (err) 1532 pr_warn("set port command failed\n"); 1533 else 1534 if ((gw->port == 1) || !is_bonded) 1535 mlx4_ib_dispatch_event(gw->dev, 1536 is_bonded ? 1 : gw->port, 1537 IB_EVENT_GID_CHANGE); 1538 1539 mlx4_free_cmd_mailbox(dev, mailbox); 1540 kfree(gw); 1541} 1542 1543static void reset_gids_task(struct work_struct *work) 1544{ 1545 struct update_gid_work *gw = 1546 container_of(work, struct update_gid_work, work); 1547 struct mlx4_cmd_mailbox *mailbox; 1548 union ib_gid *gids; 1549 int err; 1550 struct mlx4_dev *dev = gw->dev->dev; 1551 1552 if (!gw->dev->ib_active) 1553 return; 1554 1555 mailbox = mlx4_alloc_cmd_mailbox(dev); 1556 if (IS_ERR(mailbox)) { 1557 pr_warn("reset gid table failed\n"); 1558 goto free; 1559 } 1560 1561 gids = mailbox->buf; 1562 memcpy(gids, gw->gids, sizeof(gw->gids)); 1563 1564 if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) == 1565 IB_LINK_LAYER_ETHERNET) { 1566 err = mlx4_cmd(dev, mailbox->dma, 1567 MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1568 MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT, 1569 MLX4_CMD_TIME_CLASS_B, 1570 MLX4_CMD_WRAPPED); 1571 if (err) 1572 pr_warn("set port %d command failed\n", gw->port); 1573 } 1574 1575 mlx4_free_cmd_mailbox(dev, mailbox); 1576free: 1577 kfree(gw); 1578} 1579 1580static 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 1640static 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 1647static 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 1664static 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 1703static 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 1726static 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) 1743static 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) 1759static 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 1808unlock: 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 1816static 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 1862static 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 1870static 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); 1900out: 1901 return err; 1902} 1903 1904static 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 1994static 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 2009static 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 2042static 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 2095static 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 2117static 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 2407err_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 2429err_mad: 2430 mlx4_ib_mad_cleanup(ibdev); 2431 2432err_reg: 2433 ib_unregister_device(&ibdev->ib_dev); 2434 2435err_steer_free_bitmap: 2436 kfree(ibdev->ib_uc_qpns_bitmap); 2437 2438err_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); 2442err_counter: 2443 for (; i; --i) 2444 if (ibdev->counters[i - 1] != -1) 2445 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 2446 2447err_map: 2448 iounmap(ibdev->uar_map); 2449 2450err_uar: 2451 mlx4_uar_free(dev, &ibdev->priv_uar); 2452 2453err_pd: 2454 mlx4_pd_free(dev, ibdev->priv_pdn); 2455 2456err_dealloc: 2457 ib_dealloc_device(&ibdev->ib_dev); 2458 2459 return NULL; 2460} 2461 2462int 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 2478void 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 2491int 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 2525static 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 2575static 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 } 2621out: 2622 kfree(dm); 2623 return; 2624} 2625 2626static 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 2687static 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 2723static 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 if (mlx4_is_master(dev)) { 2794 int i; 2795 2796 for (i = 1; i <= ibdev->num_ports; i++) { 2797 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 2798 == IB_LINK_LAYER_INFINIBAND) 2799 mlx4_ib_slave_alias_guid_event(ibdev, 2800 p, i, 2801 1); 2802 } 2803 } 2804 return; 2805 2806 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 2807 if (mlx4_is_master(dev)) { 2808 int i; 2809 2810 for (i = 1; i <= ibdev->num_ports; i++) { 2811 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) 2812 == IB_LINK_LAYER_INFINIBAND) 2813 mlx4_ib_slave_alias_guid_event(ibdev, 2814 p, i, 2815 0); 2816 } 2817 } 2818 /* here, p is the slave id */ 2819 do_slave_init(ibdev, p, 0); 2820 return; 2821 2822 default: 2823 return; 2824 } 2825 2826 ibev.device = ibdev_ptr; 2827 ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; 2828 2829 ib_dispatch_event(&ibev); 2830} 2831 2832static struct mlx4_interface mlx4_ib_interface = { 2833 .add = mlx4_ib_add, 2834 .remove = mlx4_ib_remove, 2835 .event = mlx4_ib_event, 2836 .protocol = MLX4_PROT_IB_IPV6, 2837 .flags = MLX4_INTFF_BONDING 2838}; 2839 2840static int __init mlx4_ib_init(void) 2841{ 2842 int err; 2843 2844 wq = create_singlethread_workqueue("mlx4_ib"); 2845 if (!wq) 2846 return -ENOMEM; 2847 2848 err = mlx4_ib_mcg_init(); 2849 if (err) 2850 goto clean_wq; 2851 2852 err = mlx4_register_interface(&mlx4_ib_interface); 2853 if (err) 2854 goto clean_mcg; 2855 2856 return 0; 2857 2858clean_mcg: 2859 mlx4_ib_mcg_destroy(); 2860 2861clean_wq: 2862 destroy_workqueue(wq); 2863 return err; 2864} 2865 2866static void __exit mlx4_ib_cleanup(void) 2867{ 2868 mlx4_unregister_interface(&mlx4_ib_interface); 2869 mlx4_ib_mcg_destroy(); 2870 destroy_workqueue(wq); 2871} 2872 2873module_init(mlx4_ib_init); 2874module_exit(mlx4_ib_cleanup); 2875