1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #include <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/slab.h> 37 #include <linux/errno.h> 38 #include <linux/netdevice.h> 39 #include <linux/inetdevice.h> 40 #include <linux/rtnetlink.h> 41 #include <linux/if_vlan.h> 42 #include <net/ipv6.h> 43 #include <net/addrconf.h> 44 45 #include <rdma/ib_smi.h> 46 #include <rdma/ib_user_verbs.h> 47 #include <rdma/ib_addr.h> 48 49 #include <linux/mlx4/driver.h> 50 #include <linux/mlx4/cmd.h> 51 #include <linux/mlx4/qp.h> 52 53 #include "mlx4_ib.h" 54 #include "user.h" 55 56 #define DRV_NAME MLX4_IB_DRV_NAME 57 #define DRV_VERSION "2.2-1" 58 #define DRV_RELDATE "Feb 2014" 59 60 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF 61 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF 62 #define MLX4_IB_CARD_REV_A0 0xA0 63 64 MODULE_AUTHOR("Roland Dreier"); 65 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 66 MODULE_LICENSE("Dual BSD/GPL"); 67 MODULE_VERSION(DRV_VERSION); 68 69 int mlx4_ib_sm_guid_assign = 1; 70 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 71 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)"); 72 73 static const char mlx4_ib_version[] = 74 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 75 DRV_VERSION " (" DRV_RELDATE ")\n"; 76 77 struct update_gid_work { 78 struct work_struct work; 79 union ib_gid gids[128]; 80 struct mlx4_ib_dev *dev; 81 int port; 82 }; 83 84 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 85 86 static struct workqueue_struct *wq; 87 88 static void init_query_mad(struct ib_smp *mad) 89 { 90 mad->base_version = 1; 91 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 92 mad->class_version = 1; 93 mad->method = IB_MGMT_METHOD_GET; 94 } 95 96 static union ib_gid zgid; 97 98 static int check_flow_steering_support(struct mlx4_dev *dev) 99 { 100 int eth_num_ports = 0; 101 int ib_num_ports = 0; 102 103 int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; 104 105 if (dmfs) { 106 int i; 107 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 108 eth_num_ports++; 109 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 110 ib_num_ports++; 111 dmfs &= (!ib_num_ports || 112 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && 113 (!eth_num_ports || 114 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); 115 if (ib_num_ports && mlx4_is_mfunc(dev)) { 116 pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); 117 dmfs = 0; 118 } 119 } 120 return dmfs; 121 } 122 123 static int num_ib_ports(struct mlx4_dev *dev) 124 { 125 int ib_ports = 0; 126 int i; 127 128 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 129 ib_ports++; 130 131 return ib_ports; 132 } 133 134 static int mlx4_ib_query_device(struct ib_device *ibdev, 135 struct ib_device_attr *props) 136 { 137 struct mlx4_ib_dev *dev = to_mdev(ibdev); 138 struct ib_smp *in_mad = NULL; 139 struct ib_smp *out_mad = NULL; 140 int err = -ENOMEM; 141 int have_ib_ports; 142 143 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 144 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 145 if (!in_mad || !out_mad) 146 goto out; 147 148 init_query_mad(in_mad); 149 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 150 151 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 152 1, NULL, NULL, in_mad, out_mad); 153 if (err) 154 goto out; 155 156 memset(props, 0, sizeof *props); 157 158 have_ib_ports = num_ib_ports(dev->dev); 159 160 props->fw_ver = dev->dev->caps.fw_ver; 161 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 162 IB_DEVICE_PORT_ACTIVE_EVENT | 163 IB_DEVICE_SYS_IMAGE_GUID | 164 IB_DEVICE_RC_RNR_NAK_GEN | 165 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 166 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 167 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 168 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 169 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 170 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports) 171 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 172 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 173 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 174 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 175 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 176 if (dev->dev->caps.max_gso_sz && 177 (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) && 178 (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)) 179 props->device_cap_flags |= IB_DEVICE_UD_TSO; 180 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 181 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 182 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 183 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 184 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 185 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 186 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 187 props->device_cap_flags |= IB_DEVICE_XRC; 188 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) 189 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; 190 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 191 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) 192 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; 193 else 194 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; 195 if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 196 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 197 } 198 199 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 200 0xffffff; 201 props->vendor_part_id = dev->dev->pdev->device; 202 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 203 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 204 205 props->max_mr_size = ~0ull; 206 props->page_size_cap = dev->dev->caps.page_size_cap; 207 props->max_qp = dev->dev->quotas.qp; 208 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 209 props->max_sge = min(dev->dev->caps.max_sq_sg, 210 dev->dev->caps.max_rq_sg); 211 props->max_cq = dev->dev->quotas.cq; 212 props->max_cqe = dev->dev->caps.max_cqes; 213 props->max_mr = dev->dev->quotas.mpt; 214 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 215 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 216 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 217 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 218 props->max_srq = dev->dev->quotas.srq; 219 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 220 props->max_srq_sge = dev->dev->caps.max_srq_sge; 221 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 222 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 223 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 224 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 225 props->masked_atomic_cap = props->atomic_cap; 226 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 227 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 228 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 229 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 230 props->max_mcast_grp; 231 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 232 233 out: 234 kfree(in_mad); 235 kfree(out_mad); 236 237 return err; 238 } 239 240 static enum rdma_link_layer 241 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 242 { 243 struct mlx4_dev *dev = to_mdev(device)->dev; 244 245 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 246 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 247 } 248 249 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 250 struct ib_port_attr *props, int netw_view) 251 { 252 struct ib_smp *in_mad = NULL; 253 struct ib_smp *out_mad = NULL; 254 int ext_active_speed; 255 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 256 int err = -ENOMEM; 257 258 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 259 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 260 if (!in_mad || !out_mad) 261 goto out; 262 263 init_query_mad(in_mad); 264 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 265 in_mad->attr_mod = cpu_to_be32(port); 266 267 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 268 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 269 270 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 271 in_mad, out_mad); 272 if (err) 273 goto out; 274 275 276 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 277 props->lmc = out_mad->data[34] & 0x7; 278 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 279 props->sm_sl = out_mad->data[36] & 0xf; 280 props->state = out_mad->data[32] & 0xf; 281 props->phys_state = out_mad->data[33] >> 4; 282 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 283 if (netw_view) 284 props->gid_tbl_len = out_mad->data[50]; 285 else 286 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 287 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 288 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 289 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 290 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 291 props->active_width = out_mad->data[31] & 0xf; 292 props->active_speed = out_mad->data[35] >> 4; 293 props->max_mtu = out_mad->data[41] & 0xf; 294 props->active_mtu = out_mad->data[36] >> 4; 295 props->subnet_timeout = out_mad->data[51] & 0x1f; 296 props->max_vl_num = out_mad->data[37] >> 4; 297 props->init_type_reply = out_mad->data[41] >> 4; 298 299 /* Check if extended speeds (EDR/FDR/...) are supported */ 300 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 301 ext_active_speed = out_mad->data[62] >> 4; 302 303 switch (ext_active_speed) { 304 case 1: 305 props->active_speed = IB_SPEED_FDR; 306 break; 307 case 2: 308 props->active_speed = IB_SPEED_EDR; 309 break; 310 } 311 } 312 313 /* If reported active speed is QDR, check if is FDR-10 */ 314 if (props->active_speed == IB_SPEED_QDR) { 315 init_query_mad(in_mad); 316 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 317 in_mad->attr_mod = cpu_to_be32(port); 318 319 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 320 NULL, NULL, in_mad, out_mad); 321 if (err) 322 goto out; 323 324 /* Checking LinkSpeedActive for FDR-10 */ 325 if (out_mad->data[15] & 0x1) 326 props->active_speed = IB_SPEED_FDR10; 327 } 328 329 /* Avoid wrong speed value returned by FW if the IB link is down. */ 330 if (props->state == IB_PORT_DOWN) 331 props->active_speed = IB_SPEED_SDR; 332 333 out: 334 kfree(in_mad); 335 kfree(out_mad); 336 return err; 337 } 338 339 static u8 state_to_phys_state(enum ib_port_state state) 340 { 341 return state == IB_PORT_ACTIVE ? 5 : 3; 342 } 343 344 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 345 struct ib_port_attr *props, int netw_view) 346 { 347 348 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 349 struct mlx4_ib_iboe *iboe = &mdev->iboe; 350 struct net_device *ndev; 351 enum ib_mtu tmp; 352 struct mlx4_cmd_mailbox *mailbox; 353 int err = 0; 354 355 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 356 if (IS_ERR(mailbox)) 357 return PTR_ERR(mailbox); 358 359 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 360 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 361 MLX4_CMD_WRAPPED); 362 if (err) 363 goto out; 364 365 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? 366 IB_WIDTH_4X : IB_WIDTH_1X; 367 props->active_speed = IB_SPEED_QDR; 368 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS; 369 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 370 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 371 props->pkey_tbl_len = 1; 372 props->max_mtu = IB_MTU_4096; 373 props->max_vl_num = 2; 374 props->state = IB_PORT_DOWN; 375 props->phys_state = state_to_phys_state(props->state); 376 props->active_mtu = IB_MTU_256; 377 spin_lock_bh(&iboe->lock); 378 ndev = iboe->netdevs[port - 1]; 379 if (!ndev) 380 goto out_unlock; 381 382 tmp = iboe_get_mtu(ndev->mtu); 383 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 384 385 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 386 IB_PORT_ACTIVE : IB_PORT_DOWN; 387 props->phys_state = state_to_phys_state(props->state); 388 out_unlock: 389 spin_unlock_bh(&iboe->lock); 390 out: 391 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 392 return err; 393 } 394 395 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 396 struct ib_port_attr *props, int netw_view) 397 { 398 int err; 399 400 memset(props, 0, sizeof *props); 401 402 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 403 ib_link_query_port(ibdev, port, props, netw_view) : 404 eth_link_query_port(ibdev, port, props, netw_view); 405 406 return err; 407 } 408 409 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 410 struct ib_port_attr *props) 411 { 412 /* returns host view */ 413 return __mlx4_ib_query_port(ibdev, port, props, 0); 414 } 415 416 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 417 union ib_gid *gid, int netw_view) 418 { 419 struct ib_smp *in_mad = NULL; 420 struct ib_smp *out_mad = NULL; 421 int err = -ENOMEM; 422 struct mlx4_ib_dev *dev = to_mdev(ibdev); 423 int clear = 0; 424 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 425 426 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 427 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 428 if (!in_mad || !out_mad) 429 goto out; 430 431 init_query_mad(in_mad); 432 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 433 in_mad->attr_mod = cpu_to_be32(port); 434 435 if (mlx4_is_mfunc(dev->dev) && netw_view) 436 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 437 438 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 439 if (err) 440 goto out; 441 442 memcpy(gid->raw, out_mad->data + 8, 8); 443 444 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 445 if (index) { 446 /* For any index > 0, return the null guid */ 447 err = 0; 448 clear = 1; 449 goto out; 450 } 451 } 452 453 init_query_mad(in_mad); 454 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 455 in_mad->attr_mod = cpu_to_be32(index / 8); 456 457 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 458 NULL, NULL, in_mad, out_mad); 459 if (err) 460 goto out; 461 462 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 463 464 out: 465 if (clear) 466 memset(gid->raw + 8, 0, 8); 467 kfree(in_mad); 468 kfree(out_mad); 469 return err; 470 } 471 472 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, 473 union ib_gid *gid) 474 { 475 struct mlx4_ib_dev *dev = to_mdev(ibdev); 476 477 *gid = dev->iboe.gid_table[port - 1][index]; 478 479 return 0; 480 } 481 482 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 483 union ib_gid *gid) 484 { 485 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 486 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 487 else 488 return iboe_query_gid(ibdev, port, index, gid); 489 } 490 491 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 492 u16 *pkey, int netw_view) 493 { 494 struct ib_smp *in_mad = NULL; 495 struct ib_smp *out_mad = NULL; 496 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 497 int err = -ENOMEM; 498 499 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 500 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 501 if (!in_mad || !out_mad) 502 goto out; 503 504 init_query_mad(in_mad); 505 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 506 in_mad->attr_mod = cpu_to_be32(index / 32); 507 508 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 509 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 510 511 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 512 in_mad, out_mad); 513 if (err) 514 goto out; 515 516 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 517 518 out: 519 kfree(in_mad); 520 kfree(out_mad); 521 return err; 522 } 523 524 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 525 { 526 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 527 } 528 529 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 530 struct ib_device_modify *props) 531 { 532 struct mlx4_cmd_mailbox *mailbox; 533 unsigned long flags; 534 535 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 536 return -EOPNOTSUPP; 537 538 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 539 return 0; 540 541 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 542 return -EOPNOTSUPP; 543 544 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 545 memcpy(ibdev->node_desc, props->node_desc, 64); 546 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 547 548 /* 549 * If possible, pass node desc to FW, so it can generate 550 * a 144 trap. If cmd fails, just ignore. 551 */ 552 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 553 if (IS_ERR(mailbox)) 554 return 0; 555 556 memcpy(mailbox->buf, props->node_desc, 64); 557 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 558 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 559 560 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 561 562 return 0; 563 } 564 565 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 566 u32 cap_mask) 567 { 568 struct mlx4_cmd_mailbox *mailbox; 569 int err; 570 571 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 572 if (IS_ERR(mailbox)) 573 return PTR_ERR(mailbox); 574 575 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 576 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 577 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 578 } else { 579 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 580 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 581 } 582 583 err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT, 584 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); 585 586 mlx4_free_cmd_mailbox(dev->dev, mailbox); 587 return err; 588 } 589 590 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 591 struct ib_port_modify *props) 592 { 593 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 594 u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 595 struct ib_port_attr attr; 596 u32 cap_mask; 597 int err; 598 599 /* return OK if this is RoCE. CM calls ib_modify_port() regardless 600 * of whether port link layer is ETH or IB. For ETH ports, qkey 601 * violations and port capabilities are not meaningful. 602 */ 603 if (is_eth) 604 return 0; 605 606 mutex_lock(&mdev->cap_mask_mutex); 607 608 err = mlx4_ib_query_port(ibdev, port, &attr); 609 if (err) 610 goto out; 611 612 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 613 ~props->clr_port_cap_mask; 614 615 err = mlx4_ib_SET_PORT(mdev, port, 616 !!(mask & IB_PORT_RESET_QKEY_CNTR), 617 cap_mask); 618 619 out: 620 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 621 return err; 622 } 623 624 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 625 struct ib_udata *udata) 626 { 627 struct mlx4_ib_dev *dev = to_mdev(ibdev); 628 struct mlx4_ib_ucontext *context; 629 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; 630 struct mlx4_ib_alloc_ucontext_resp resp; 631 int err; 632 633 if (!dev->ib_active) 634 return ERR_PTR(-EAGAIN); 635 636 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { 637 resp_v3.qp_tab_size = dev->dev->caps.num_qps; 638 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; 639 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 640 } else { 641 resp.dev_caps = dev->dev->caps.userspace_caps; 642 resp.qp_tab_size = dev->dev->caps.num_qps; 643 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 644 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 645 resp.cqe_size = dev->dev->caps.cqe_size; 646 } 647 648 context = kmalloc(sizeof *context, GFP_KERNEL); 649 if (!context) 650 return ERR_PTR(-ENOMEM); 651 652 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 653 if (err) { 654 kfree(context); 655 return ERR_PTR(err); 656 } 657 658 INIT_LIST_HEAD(&context->db_page_list); 659 mutex_init(&context->db_page_mutex); 660 661 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) 662 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); 663 else 664 err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 665 666 if (err) { 667 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 668 kfree(context); 669 return ERR_PTR(-EFAULT); 670 } 671 672 return &context->ibucontext; 673 } 674 675 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 676 { 677 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 678 679 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 680 kfree(context); 681 682 return 0; 683 } 684 685 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 686 { 687 struct mlx4_ib_dev *dev = to_mdev(context->device); 688 689 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 690 return -EINVAL; 691 692 if (vma->vm_pgoff == 0) { 693 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 694 695 if (io_remap_pfn_range(vma, vma->vm_start, 696 to_mucontext(context)->uar.pfn, 697 PAGE_SIZE, vma->vm_page_prot)) 698 return -EAGAIN; 699 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 700 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 701 702 if (io_remap_pfn_range(vma, vma->vm_start, 703 to_mucontext(context)->uar.pfn + 704 dev->dev->caps.num_uars, 705 PAGE_SIZE, vma->vm_page_prot)) 706 return -EAGAIN; 707 } else 708 return -EINVAL; 709 710 return 0; 711 } 712 713 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 714 struct ib_ucontext *context, 715 struct ib_udata *udata) 716 { 717 struct mlx4_ib_pd *pd; 718 int err; 719 720 pd = kmalloc(sizeof *pd, GFP_KERNEL); 721 if (!pd) 722 return ERR_PTR(-ENOMEM); 723 724 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 725 if (err) { 726 kfree(pd); 727 return ERR_PTR(err); 728 } 729 730 if (context) 731 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 732 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 733 kfree(pd); 734 return ERR_PTR(-EFAULT); 735 } 736 737 return &pd->ibpd; 738 } 739 740 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 741 { 742 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 743 kfree(pd); 744 745 return 0; 746 } 747 748 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 749 struct ib_ucontext *context, 750 struct ib_udata *udata) 751 { 752 struct mlx4_ib_xrcd *xrcd; 753 int err; 754 755 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 756 return ERR_PTR(-ENOSYS); 757 758 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 759 if (!xrcd) 760 return ERR_PTR(-ENOMEM); 761 762 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 763 if (err) 764 goto err1; 765 766 xrcd->pd = ib_alloc_pd(ibdev); 767 if (IS_ERR(xrcd->pd)) { 768 err = PTR_ERR(xrcd->pd); 769 goto err2; 770 } 771 772 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 773 if (IS_ERR(xrcd->cq)) { 774 err = PTR_ERR(xrcd->cq); 775 goto err3; 776 } 777 778 return &xrcd->ibxrcd; 779 780 err3: 781 ib_dealloc_pd(xrcd->pd); 782 err2: 783 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 784 err1: 785 kfree(xrcd); 786 return ERR_PTR(err); 787 } 788 789 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 790 { 791 ib_destroy_cq(to_mxrcd(xrcd)->cq); 792 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 793 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 794 kfree(xrcd); 795 796 return 0; 797 } 798 799 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 800 { 801 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 802 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 803 struct mlx4_ib_gid_entry *ge; 804 805 ge = kzalloc(sizeof *ge, GFP_KERNEL); 806 if (!ge) 807 return -ENOMEM; 808 809 ge->gid = *gid; 810 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 811 ge->port = mqp->port; 812 ge->added = 1; 813 } 814 815 mutex_lock(&mqp->mutex); 816 list_add_tail(&ge->list, &mqp->gid_list); 817 mutex_unlock(&mqp->mutex); 818 819 return 0; 820 } 821 822 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 823 union ib_gid *gid) 824 { 825 struct net_device *ndev; 826 int ret = 0; 827 828 if (!mqp->port) 829 return 0; 830 831 spin_lock_bh(&mdev->iboe.lock); 832 ndev = mdev->iboe.netdevs[mqp->port - 1]; 833 if (ndev) 834 dev_hold(ndev); 835 spin_unlock_bh(&mdev->iboe.lock); 836 837 if (ndev) { 838 ret = 1; 839 dev_put(ndev); 840 } 841 842 return ret; 843 } 844 845 struct mlx4_ib_steering { 846 struct list_head list; 847 u64 reg_id; 848 union ib_gid gid; 849 }; 850 851 static int parse_flow_attr(struct mlx4_dev *dev, 852 u32 qp_num, 853 union ib_flow_spec *ib_spec, 854 struct _rule_hw *mlx4_spec) 855 { 856 enum mlx4_net_trans_rule_id type; 857 858 switch (ib_spec->type) { 859 case IB_FLOW_SPEC_ETH: 860 type = MLX4_NET_TRANS_RULE_ID_ETH; 861 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, 862 ETH_ALEN); 863 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, 864 ETH_ALEN); 865 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; 866 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; 867 break; 868 case IB_FLOW_SPEC_IB: 869 type = MLX4_NET_TRANS_RULE_ID_IB; 870 mlx4_spec->ib.l3_qpn = 871 cpu_to_be32(qp_num); 872 mlx4_spec->ib.qpn_mask = 873 cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); 874 break; 875 876 877 case IB_FLOW_SPEC_IPV4: 878 type = MLX4_NET_TRANS_RULE_ID_IPV4; 879 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; 880 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; 881 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; 882 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; 883 break; 884 885 case IB_FLOW_SPEC_TCP: 886 case IB_FLOW_SPEC_UDP: 887 type = ib_spec->type == IB_FLOW_SPEC_TCP ? 888 MLX4_NET_TRANS_RULE_ID_TCP : 889 MLX4_NET_TRANS_RULE_ID_UDP; 890 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; 891 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; 892 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; 893 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; 894 break; 895 896 default: 897 return -EINVAL; 898 } 899 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || 900 mlx4_hw_rule_sz(dev, type) < 0) 901 return -EINVAL; 902 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); 903 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; 904 return mlx4_hw_rule_sz(dev, type); 905 } 906 907 struct default_rules { 908 __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 909 __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; 910 __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; 911 __u8 link_layer; 912 }; 913 static const struct default_rules default_table[] = { 914 { 915 .mandatory_fields = {IB_FLOW_SPEC_IPV4}, 916 .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, 917 .rules_create_list = {IB_FLOW_SPEC_IB}, 918 .link_layer = IB_LINK_LAYER_INFINIBAND 919 } 920 }; 921 922 static int __mlx4_ib_default_rules_match(struct ib_qp *qp, 923 struct ib_flow_attr *flow_attr) 924 { 925 int i, j, k; 926 void *ib_flow; 927 const struct default_rules *pdefault_rules = default_table; 928 u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); 929 930 for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { 931 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; 932 memset(&field_types, 0, sizeof(field_types)); 933 934 if (link_layer != pdefault_rules->link_layer) 935 continue; 936 937 ib_flow = flow_attr + 1; 938 /* we assume the specs are sorted */ 939 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && 940 j < flow_attr->num_of_specs; k++) { 941 union ib_flow_spec *current_flow = 942 (union ib_flow_spec *)ib_flow; 943 944 /* same layer but different type */ 945 if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == 946 (pdefault_rules->mandatory_fields[k] & 947 IB_FLOW_SPEC_LAYER_MASK)) && 948 (current_flow->type != 949 pdefault_rules->mandatory_fields[k])) 950 goto out; 951 952 /* same layer, try match next one */ 953 if (current_flow->type == 954 pdefault_rules->mandatory_fields[k]) { 955 j++; 956 ib_flow += 957 ((union ib_flow_spec *)ib_flow)->size; 958 } 959 } 960 961 ib_flow = flow_attr + 1; 962 for (j = 0; j < flow_attr->num_of_specs; 963 j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) 964 for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) 965 /* same layer and same type */ 966 if (((union ib_flow_spec *)ib_flow)->type == 967 pdefault_rules->mandatory_not_fields[k]) 968 goto out; 969 970 return i; 971 } 972 out: 973 return -1; 974 } 975 976 static int __mlx4_ib_create_default_rules( 977 struct mlx4_ib_dev *mdev, 978 struct ib_qp *qp, 979 const struct default_rules *pdefault_rules, 980 struct _rule_hw *mlx4_spec) { 981 int size = 0; 982 int i; 983 984 for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { 985 int ret; 986 union ib_flow_spec ib_spec; 987 switch (pdefault_rules->rules_create_list[i]) { 988 case 0: 989 /* no rule */ 990 continue; 991 case IB_FLOW_SPEC_IB: 992 ib_spec.type = IB_FLOW_SPEC_IB; 993 ib_spec.size = sizeof(struct ib_flow_spec_ib); 994 995 break; 996 default: 997 /* invalid rule */ 998 return -EINVAL; 999 } 1000 /* We must put empty rule, qpn is being ignored */ 1001 ret = parse_flow_attr(mdev->dev, 0, &ib_spec, 1002 mlx4_spec); 1003 if (ret < 0) { 1004 pr_info("invalid parsing\n"); 1005 return -EINVAL; 1006 } 1007 1008 mlx4_spec = (void *)mlx4_spec + ret; 1009 size += ret; 1010 } 1011 return size; 1012 } 1013 1014 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1015 int domain, 1016 enum mlx4_net_trans_promisc_mode flow_type, 1017 u64 *reg_id) 1018 { 1019 int ret, i; 1020 int size = 0; 1021 void *ib_flow; 1022 struct mlx4_ib_dev *mdev = to_mdev(qp->device); 1023 struct mlx4_cmd_mailbox *mailbox; 1024 struct mlx4_net_trans_rule_hw_ctrl *ctrl; 1025 int default_flow; 1026 1027 static const u16 __mlx4_domain[] = { 1028 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, 1029 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, 1030 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, 1031 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, 1032 }; 1033 1034 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { 1035 pr_err("Invalid priority value %d\n", flow_attr->priority); 1036 return -EINVAL; 1037 } 1038 1039 if (domain >= IB_FLOW_DOMAIN_NUM) { 1040 pr_err("Invalid domain value %d\n", domain); 1041 return -EINVAL; 1042 } 1043 1044 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) 1045 return -EINVAL; 1046 1047 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 1048 if (IS_ERR(mailbox)) 1049 return PTR_ERR(mailbox); 1050 ctrl = mailbox->buf; 1051 1052 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | 1053 flow_attr->priority); 1054 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); 1055 ctrl->port = flow_attr->port; 1056 ctrl->qpn = cpu_to_be32(qp->qp_num); 1057 1058 ib_flow = flow_attr + 1; 1059 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); 1060 /* Add default flows */ 1061 default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); 1062 if (default_flow >= 0) { 1063 ret = __mlx4_ib_create_default_rules( 1064 mdev, qp, default_table + default_flow, 1065 mailbox->buf + size); 1066 if (ret < 0) { 1067 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1068 return -EINVAL; 1069 } 1070 size += ret; 1071 } 1072 for (i = 0; i < flow_attr->num_of_specs; i++) { 1073 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, 1074 mailbox->buf + size); 1075 if (ret < 0) { 1076 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1077 return -EINVAL; 1078 } 1079 ib_flow += ((union ib_flow_spec *) ib_flow)->size; 1080 size += ret; 1081 } 1082 1083 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, 1084 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, 1085 MLX4_CMD_NATIVE); 1086 if (ret == -ENOMEM) 1087 pr_err("mcg table is full. Fail to register network rule.\n"); 1088 else if (ret == -ENXIO) 1089 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); 1090 else if (ret) 1091 pr_err("Invalid argumant. Fail to register network rule.\n"); 1092 1093 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 1094 return ret; 1095 } 1096 1097 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) 1098 { 1099 int err; 1100 err = mlx4_cmd(dev, reg_id, 0, 0, 1101 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, 1102 MLX4_CMD_NATIVE); 1103 if (err) 1104 pr_err("Fail to detach network rule. registration id = 0x%llx\n", 1105 reg_id); 1106 return err; 1107 } 1108 1109 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, 1110 u64 *reg_id) 1111 { 1112 void *ib_flow; 1113 union ib_flow_spec *ib_spec; 1114 struct mlx4_dev *dev = to_mdev(qp->device)->dev; 1115 int err = 0; 1116 1117 if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1118 return 0; /* do nothing */ 1119 1120 ib_flow = flow_attr + 1; 1121 ib_spec = (union ib_flow_spec *)ib_flow; 1122 1123 if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) 1124 return 0; /* do nothing */ 1125 1126 err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, 1127 flow_attr->port, qp->qp_num, 1128 MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), 1129 reg_id); 1130 return err; 1131 } 1132 1133 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, 1134 struct ib_flow_attr *flow_attr, 1135 int domain) 1136 { 1137 int err = 0, i = 0; 1138 struct mlx4_ib_flow *mflow; 1139 enum mlx4_net_trans_promisc_mode type[2]; 1140 1141 memset(type, 0, sizeof(type)); 1142 1143 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); 1144 if (!mflow) { 1145 err = -ENOMEM; 1146 goto err_free; 1147 } 1148 1149 switch (flow_attr->type) { 1150 case IB_FLOW_ATTR_NORMAL: 1151 type[0] = MLX4_FS_REGULAR; 1152 break; 1153 1154 case IB_FLOW_ATTR_ALL_DEFAULT: 1155 type[0] = MLX4_FS_ALL_DEFAULT; 1156 break; 1157 1158 case IB_FLOW_ATTR_MC_DEFAULT: 1159 type[0] = MLX4_FS_MC_DEFAULT; 1160 break; 1161 1162 case IB_FLOW_ATTR_SNIFFER: 1163 type[0] = MLX4_FS_UC_SNIFFER; 1164 type[1] = MLX4_FS_MC_SNIFFER; 1165 break; 1166 1167 default: 1168 err = -EINVAL; 1169 goto err_free; 1170 } 1171 1172 while (i < ARRAY_SIZE(type) && type[i]) { 1173 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], 1174 &mflow->reg_id[i]); 1175 if (err) 1176 goto err_create_flow; 1177 i++; 1178 } 1179 1180 if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { 1181 err = mlx4_ib_tunnel_steer_add(qp, flow_attr, &mflow->reg_id[i]); 1182 if (err) 1183 goto err_create_flow; 1184 i++; 1185 } 1186 1187 return &mflow->ibflow; 1188 1189 err_create_flow: 1190 while (i) { 1191 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, mflow->reg_id[i]); 1192 i--; 1193 } 1194 err_free: 1195 kfree(mflow); 1196 return ERR_PTR(err); 1197 } 1198 1199 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) 1200 { 1201 int err, ret = 0; 1202 int i = 0; 1203 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); 1204 struct mlx4_ib_flow *mflow = to_mflow(flow_id); 1205 1206 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) { 1207 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]); 1208 if (err) 1209 ret = err; 1210 i++; 1211 } 1212 1213 kfree(mflow); 1214 return ret; 1215 } 1216 1217 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1218 { 1219 int err; 1220 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1221 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1222 u64 reg_id; 1223 struct mlx4_ib_steering *ib_steering = NULL; 1224 enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ? 1225 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6; 1226 1227 if (mdev->dev->caps.steering_mode == 1228 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1229 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 1230 if (!ib_steering) 1231 return -ENOMEM; 1232 } 1233 1234 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 1235 !!(mqp->flags & 1236 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 1237 prot, ®_id); 1238 if (err) 1239 goto err_malloc; 1240 1241 err = add_gid_entry(ibqp, gid); 1242 if (err) 1243 goto err_add; 1244 1245 if (ib_steering) { 1246 memcpy(ib_steering->gid.raw, gid->raw, 16); 1247 ib_steering->reg_id = reg_id; 1248 mutex_lock(&mqp->mutex); 1249 list_add(&ib_steering->list, &mqp->steering_rules); 1250 mutex_unlock(&mqp->mutex); 1251 } 1252 return 0; 1253 1254 err_add: 1255 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1256 prot, reg_id); 1257 err_malloc: 1258 kfree(ib_steering); 1259 1260 return err; 1261 } 1262 1263 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 1264 { 1265 struct mlx4_ib_gid_entry *ge; 1266 struct mlx4_ib_gid_entry *tmp; 1267 struct mlx4_ib_gid_entry *ret = NULL; 1268 1269 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 1270 if (!memcmp(raw, ge->gid.raw, 16)) { 1271 ret = ge; 1272 break; 1273 } 1274 } 1275 1276 return ret; 1277 } 1278 1279 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 1280 { 1281 int err; 1282 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 1283 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 1284 struct net_device *ndev; 1285 struct mlx4_ib_gid_entry *ge; 1286 u64 reg_id = 0; 1287 enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ? 1288 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6; 1289 1290 if (mdev->dev->caps.steering_mode == 1291 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1292 struct mlx4_ib_steering *ib_steering; 1293 1294 mutex_lock(&mqp->mutex); 1295 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 1296 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 1297 list_del(&ib_steering->list); 1298 break; 1299 } 1300 } 1301 mutex_unlock(&mqp->mutex); 1302 if (&ib_steering->list == &mqp->steering_rules) { 1303 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 1304 return -EINVAL; 1305 } 1306 reg_id = ib_steering->reg_id; 1307 kfree(ib_steering); 1308 } 1309 1310 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 1311 prot, reg_id); 1312 if (err) 1313 return err; 1314 1315 mutex_lock(&mqp->mutex); 1316 ge = find_gid_entry(mqp, gid->raw); 1317 if (ge) { 1318 spin_lock_bh(&mdev->iboe.lock); 1319 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 1320 if (ndev) 1321 dev_hold(ndev); 1322 spin_unlock_bh(&mdev->iboe.lock); 1323 if (ndev) 1324 dev_put(ndev); 1325 list_del(&ge->list); 1326 kfree(ge); 1327 } else 1328 pr_warn("could not find mgid entry\n"); 1329 1330 mutex_unlock(&mqp->mutex); 1331 1332 return 0; 1333 } 1334 1335 static int init_node_data(struct mlx4_ib_dev *dev) 1336 { 1337 struct ib_smp *in_mad = NULL; 1338 struct ib_smp *out_mad = NULL; 1339 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 1340 int err = -ENOMEM; 1341 1342 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 1343 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1344 if (!in_mad || !out_mad) 1345 goto out; 1346 1347 init_query_mad(in_mad); 1348 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 1349 if (mlx4_is_master(dev->dev)) 1350 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 1351 1352 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1353 if (err) 1354 goto out; 1355 1356 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 1357 1358 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 1359 1360 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 1361 if (err) 1362 goto out; 1363 1364 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 1365 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 1366 1367 out: 1368 kfree(in_mad); 1369 kfree(out_mad); 1370 return err; 1371 } 1372 1373 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 1374 char *buf) 1375 { 1376 struct mlx4_ib_dev *dev = 1377 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1378 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 1379 } 1380 1381 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1382 char *buf) 1383 { 1384 struct mlx4_ib_dev *dev = 1385 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1386 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 1387 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 1388 (int) dev->dev->caps.fw_ver & 0xffff); 1389 } 1390 1391 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 1392 char *buf) 1393 { 1394 struct mlx4_ib_dev *dev = 1395 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1396 return sprintf(buf, "%x\n", dev->dev->rev_id); 1397 } 1398 1399 static ssize_t show_board(struct device *device, struct device_attribute *attr, 1400 char *buf) 1401 { 1402 struct mlx4_ib_dev *dev = 1403 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 1404 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 1405 dev->dev->board_id); 1406 } 1407 1408 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 1409 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1410 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 1411 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 1412 1413 static struct device_attribute *mlx4_class_attributes[] = { 1414 &dev_attr_hw_rev, 1415 &dev_attr_fw_ver, 1416 &dev_attr_hca_type, 1417 &dev_attr_board_id 1418 }; 1419 1420 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, 1421 struct net_device *dev) 1422 { 1423 memcpy(eui, dev->dev_addr, 3); 1424 memcpy(eui + 5, dev->dev_addr + 3, 3); 1425 if (vlan_id < 0x1000) { 1426 eui[3] = vlan_id >> 8; 1427 eui[4] = vlan_id & 0xff; 1428 } else { 1429 eui[3] = 0xff; 1430 eui[4] = 0xfe; 1431 } 1432 eui[0] ^= 2; 1433 } 1434 1435 static void update_gids_task(struct work_struct *work) 1436 { 1437 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 1438 struct mlx4_cmd_mailbox *mailbox; 1439 union ib_gid *gids; 1440 int err; 1441 struct mlx4_dev *dev = gw->dev->dev; 1442 1443 if (!gw->dev->ib_active) 1444 return; 1445 1446 mailbox = mlx4_alloc_cmd_mailbox(dev); 1447 if (IS_ERR(mailbox)) { 1448 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); 1449 return; 1450 } 1451 1452 gids = mailbox->buf; 1453 memcpy(gids, gw->gids, sizeof gw->gids); 1454 1455 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1456 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1457 MLX4_CMD_WRAPPED); 1458 if (err) 1459 pr_warn("set port command failed\n"); 1460 else 1461 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE); 1462 1463 mlx4_free_cmd_mailbox(dev, mailbox); 1464 kfree(gw); 1465 } 1466 1467 static void reset_gids_task(struct work_struct *work) 1468 { 1469 struct update_gid_work *gw = 1470 container_of(work, struct update_gid_work, work); 1471 struct mlx4_cmd_mailbox *mailbox; 1472 union ib_gid *gids; 1473 int err; 1474 struct mlx4_dev *dev = gw->dev->dev; 1475 1476 if (!gw->dev->ib_active) 1477 return; 1478 1479 mailbox = mlx4_alloc_cmd_mailbox(dev); 1480 if (IS_ERR(mailbox)) { 1481 pr_warn("reset gid table failed\n"); 1482 goto free; 1483 } 1484 1485 gids = mailbox->buf; 1486 memcpy(gids, gw->gids, sizeof(gw->gids)); 1487 1488 if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) == 1489 IB_LINK_LAYER_ETHERNET) { 1490 err = mlx4_cmd(dev, mailbox->dma, 1491 MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1492 1, MLX4_CMD_SET_PORT, 1493 MLX4_CMD_TIME_CLASS_B, 1494 MLX4_CMD_WRAPPED); 1495 if (err) 1496 pr_warn(KERN_WARNING 1497 "set port %d command failed\n", gw->port); 1498 } 1499 1500 mlx4_free_cmd_mailbox(dev, mailbox); 1501 free: 1502 kfree(gw); 1503 } 1504 1505 static int update_gid_table(struct mlx4_ib_dev *dev, int port, 1506 union ib_gid *gid, int clear, 1507 int default_gid) 1508 { 1509 struct update_gid_work *work; 1510 int i; 1511 int need_update = 0; 1512 int free = -1; 1513 int found = -1; 1514 int max_gids; 1515 1516 if (default_gid) { 1517 free = 0; 1518 } else { 1519 max_gids = dev->dev->caps.gid_table_len[port]; 1520 for (i = 1; i < max_gids; ++i) { 1521 if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid, 1522 sizeof(*gid))) 1523 found = i; 1524 1525 if (clear) { 1526 if (found >= 0) { 1527 need_update = 1; 1528 dev->iboe.gid_table[port - 1][found] = 1529 zgid; 1530 break; 1531 } 1532 } else { 1533 if (found >= 0) 1534 break; 1535 1536 if (free < 0 && 1537 !memcmp(&dev->iboe.gid_table[port - 1][i], 1538 &zgid, sizeof(*gid))) 1539 free = i; 1540 } 1541 } 1542 } 1543 1544 if (found == -1 && !clear && free >= 0) { 1545 dev->iboe.gid_table[port - 1][free] = *gid; 1546 need_update = 1; 1547 } 1548 1549 if (!need_update) 1550 return 0; 1551 1552 work = kzalloc(sizeof(*work), GFP_ATOMIC); 1553 if (!work) 1554 return -ENOMEM; 1555 1556 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids)); 1557 INIT_WORK(&work->work, update_gids_task); 1558 work->port = port; 1559 work->dev = dev; 1560 queue_work(wq, &work->work); 1561 1562 return 0; 1563 } 1564 1565 static void mlx4_make_default_gid(struct net_device *dev, union ib_gid *gid) 1566 { 1567 gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 1568 mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev); 1569 } 1570 1571 1572 static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port) 1573 { 1574 struct update_gid_work *work; 1575 1576 work = kzalloc(sizeof(*work), GFP_ATOMIC); 1577 if (!work) 1578 return -ENOMEM; 1579 1580 memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids)); 1581 memset(work->gids, 0, sizeof(work->gids)); 1582 INIT_WORK(&work->work, reset_gids_task); 1583 work->dev = dev; 1584 work->port = port; 1585 queue_work(wq, &work->work); 1586 return 0; 1587 } 1588 1589 static int mlx4_ib_addr_event(int event, struct net_device *event_netdev, 1590 struct mlx4_ib_dev *ibdev, union ib_gid *gid) 1591 { 1592 struct mlx4_ib_iboe *iboe; 1593 int port = 0; 1594 struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ? 1595 rdma_vlan_dev_real_dev(event_netdev) : 1596 event_netdev; 1597 union ib_gid default_gid; 1598 1599 mlx4_make_default_gid(real_dev, &default_gid); 1600 1601 if (!memcmp(gid, &default_gid, sizeof(*gid))) 1602 return 0; 1603 1604 if (event != NETDEV_DOWN && event != NETDEV_UP) 1605 return 0; 1606 1607 if ((real_dev != event_netdev) && 1608 (event == NETDEV_DOWN) && 1609 rdma_link_local_addr((struct in6_addr *)gid)) 1610 return 0; 1611 1612 iboe = &ibdev->iboe; 1613 spin_lock_bh(&iboe->lock); 1614 1615 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) 1616 if ((netif_is_bond_master(real_dev) && 1617 (real_dev == iboe->masters[port - 1])) || 1618 (!netif_is_bond_master(real_dev) && 1619 (real_dev == iboe->netdevs[port - 1]))) 1620 update_gid_table(ibdev, port, gid, 1621 event == NETDEV_DOWN, 0); 1622 1623 spin_unlock_bh(&iboe->lock); 1624 return 0; 1625 1626 } 1627 1628 static u8 mlx4_ib_get_dev_port(struct net_device *dev, 1629 struct mlx4_ib_dev *ibdev) 1630 { 1631 u8 port = 0; 1632 struct mlx4_ib_iboe *iboe; 1633 struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ? 1634 rdma_vlan_dev_real_dev(dev) : dev; 1635 1636 iboe = &ibdev->iboe; 1637 1638 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) 1639 if ((netif_is_bond_master(real_dev) && 1640 (real_dev == iboe->masters[port - 1])) || 1641 (!netif_is_bond_master(real_dev) && 1642 (real_dev == iboe->netdevs[port - 1]))) 1643 break; 1644 1645 if ((port == 0) || (port > ibdev->dev->caps.num_ports)) 1646 return 0; 1647 else 1648 return port; 1649 } 1650 1651 static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event, 1652 void *ptr) 1653 { 1654 struct mlx4_ib_dev *ibdev; 1655 struct in_ifaddr *ifa = ptr; 1656 union ib_gid gid; 1657 struct net_device *event_netdev = ifa->ifa_dev->dev; 1658 1659 ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); 1660 1661 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet); 1662 1663 mlx4_ib_addr_event(event, event_netdev, ibdev, &gid); 1664 return NOTIFY_DONE; 1665 } 1666 1667 #if IS_ENABLED(CONFIG_IPV6) 1668 static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event, 1669 void *ptr) 1670 { 1671 struct mlx4_ib_dev *ibdev; 1672 struct inet6_ifaddr *ifa = ptr; 1673 union ib_gid *gid = (union ib_gid *)&ifa->addr; 1674 struct net_device *event_netdev = ifa->idev->dev; 1675 1676 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6); 1677 1678 mlx4_ib_addr_event(event, event_netdev, ibdev, gid); 1679 return NOTIFY_DONE; 1680 } 1681 #endif 1682 1683 #define MLX4_IB_INVALID_MAC ((u64)-1) 1684 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, 1685 struct net_device *dev, 1686 int port) 1687 { 1688 u64 new_smac = 0; 1689 u64 release_mac = MLX4_IB_INVALID_MAC; 1690 struct mlx4_ib_qp *qp; 1691 1692 read_lock(&dev_base_lock); 1693 new_smac = mlx4_mac_to_u64(dev->dev_addr); 1694 read_unlock(&dev_base_lock); 1695 1696 atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); 1697 1698 /* no need for update QP1 and mac registration in non-SRIOV */ 1699 if (!mlx4_is_mfunc(ibdev->dev)) 1700 return; 1701 1702 mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); 1703 qp = ibdev->qp1_proxy[port - 1]; 1704 if (qp) { 1705 int new_smac_index; 1706 u64 old_smac; 1707 struct mlx4_update_qp_params update_params; 1708 1709 mutex_lock(&qp->mutex); 1710 old_smac = qp->pri.smac; 1711 if (new_smac == old_smac) 1712 goto unlock; 1713 1714 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); 1715 1716 if (new_smac_index < 0) 1717 goto unlock; 1718 1719 update_params.smac_index = new_smac_index; 1720 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, 1721 &update_params)) { 1722 release_mac = new_smac; 1723 goto unlock; 1724 } 1725 /* if old port was zero, no mac was yet registered for this QP */ 1726 if (qp->pri.smac_port) 1727 release_mac = old_smac; 1728 qp->pri.smac = new_smac; 1729 qp->pri.smac_port = port; 1730 qp->pri.smac_index = new_smac_index; 1731 } 1732 1733 unlock: 1734 if (release_mac != MLX4_IB_INVALID_MAC) 1735 mlx4_unregister_mac(ibdev->dev, port, release_mac); 1736 if (qp) 1737 mutex_unlock(&qp->mutex); 1738 mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); 1739 } 1740 1741 static void mlx4_ib_get_dev_addr(struct net_device *dev, 1742 struct mlx4_ib_dev *ibdev, u8 port) 1743 { 1744 struct in_device *in_dev; 1745 #if IS_ENABLED(CONFIG_IPV6) 1746 struct inet6_dev *in6_dev; 1747 union ib_gid *pgid; 1748 struct inet6_ifaddr *ifp; 1749 union ib_gid default_gid; 1750 #endif 1751 union ib_gid gid; 1752 1753 1754 if ((port == 0) || (port > ibdev->dev->caps.num_ports)) 1755 return; 1756 1757 /* IPv4 gids */ 1758 in_dev = in_dev_get(dev); 1759 if (in_dev) { 1760 for_ifa(in_dev) { 1761 /*ifa->ifa_address;*/ 1762 ipv6_addr_set_v4mapped(ifa->ifa_address, 1763 (struct in6_addr *)&gid); 1764 update_gid_table(ibdev, port, &gid, 0, 0); 1765 } 1766 endfor_ifa(in_dev); 1767 in_dev_put(in_dev); 1768 } 1769 #if IS_ENABLED(CONFIG_IPV6) 1770 mlx4_make_default_gid(dev, &default_gid); 1771 /* IPv6 gids */ 1772 in6_dev = in6_dev_get(dev); 1773 if (in6_dev) { 1774 read_lock_bh(&in6_dev->lock); 1775 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) { 1776 pgid = (union ib_gid *)&ifp->addr; 1777 if (!memcmp(pgid, &default_gid, sizeof(*pgid))) 1778 continue; 1779 update_gid_table(ibdev, port, pgid, 0, 0); 1780 } 1781 read_unlock_bh(&in6_dev->lock); 1782 in6_dev_put(in6_dev); 1783 } 1784 #endif 1785 } 1786 1787 static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev, 1788 struct net_device *dev, u8 port) 1789 { 1790 union ib_gid gid; 1791 mlx4_make_default_gid(dev, &gid); 1792 update_gid_table(ibdev, port, &gid, 0, 1); 1793 } 1794 1795 static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev) 1796 { 1797 struct net_device *dev; 1798 struct mlx4_ib_iboe *iboe = &ibdev->iboe; 1799 int i; 1800 int err = 0; 1801 1802 for (i = 1; i <= ibdev->num_ports; ++i) { 1803 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) == 1804 IB_LINK_LAYER_ETHERNET) { 1805 err = reset_gid_table(ibdev, i); 1806 if (err) 1807 goto out; 1808 } 1809 } 1810 1811 read_lock(&dev_base_lock); 1812 spin_lock_bh(&iboe->lock); 1813 1814 for_each_netdev(&init_net, dev) { 1815 u8 port = mlx4_ib_get_dev_port(dev, ibdev); 1816 /* port will be non-zero only for ETH ports */ 1817 if (port) { 1818 mlx4_ib_set_default_gid(ibdev, dev, port); 1819 mlx4_ib_get_dev_addr(dev, ibdev, port); 1820 } 1821 } 1822 1823 spin_unlock_bh(&iboe->lock); 1824 read_unlock(&dev_base_lock); 1825 out: 1826 return err; 1827 } 1828 1829 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, 1830 struct net_device *dev, 1831 unsigned long event) 1832 1833 { 1834 struct mlx4_ib_iboe *iboe; 1835 int update_qps_port = -1; 1836 int port; 1837 1838 iboe = &ibdev->iboe; 1839 1840 spin_lock_bh(&iboe->lock); 1841 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 1842 enum ib_port_state port_state = IB_PORT_NOP; 1843 struct net_device *old_master = iboe->masters[port - 1]; 1844 struct net_device *curr_netdev; 1845 struct net_device *curr_master; 1846 1847 iboe->netdevs[port - 1] = 1848 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 1849 if (iboe->netdevs[port - 1]) 1850 mlx4_ib_set_default_gid(ibdev, 1851 iboe->netdevs[port - 1], port); 1852 curr_netdev = iboe->netdevs[port - 1]; 1853 1854 if (iboe->netdevs[port - 1] && 1855 netif_is_bond_slave(iboe->netdevs[port - 1])) { 1856 iboe->masters[port - 1] = netdev_master_upper_dev_get( 1857 iboe->netdevs[port - 1]); 1858 } else { 1859 iboe->masters[port - 1] = NULL; 1860 } 1861 curr_master = iboe->masters[port - 1]; 1862 1863 if (dev == iboe->netdevs[port - 1] && 1864 (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || 1865 event == NETDEV_UP || event == NETDEV_CHANGE)) 1866 update_qps_port = port; 1867 1868 if (curr_netdev) { 1869 port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ? 1870 IB_PORT_ACTIVE : IB_PORT_DOWN; 1871 mlx4_ib_set_default_gid(ibdev, curr_netdev, port); 1872 if (curr_master) { 1873 /* if using bonding/team and a slave port is down, we 1874 * don't want the bond IP based gids in the table since 1875 * flows that select port by gid may get the down port. 1876 */ 1877 if (port_state == IB_PORT_DOWN) { 1878 reset_gid_table(ibdev, port); 1879 mlx4_ib_set_default_gid(ibdev, 1880 curr_netdev, 1881 port); 1882 } else { 1883 /* gids from the upper dev (bond/team) 1884 * should appear in port's gid table 1885 */ 1886 mlx4_ib_get_dev_addr(curr_master, 1887 ibdev, port); 1888 } 1889 } 1890 /* if bonding is used it is possible that we add it to 1891 * masters only after IP address is assigned to the 1892 * net bonding interface. 1893 */ 1894 if (curr_master && (old_master != curr_master)) { 1895 reset_gid_table(ibdev, port); 1896 mlx4_ib_set_default_gid(ibdev, 1897 curr_netdev, port); 1898 mlx4_ib_get_dev_addr(curr_master, ibdev, port); 1899 } 1900 1901 if (!curr_master && (old_master != curr_master)) { 1902 reset_gid_table(ibdev, port); 1903 mlx4_ib_set_default_gid(ibdev, 1904 curr_netdev, port); 1905 mlx4_ib_get_dev_addr(curr_netdev, ibdev, port); 1906 } 1907 } else { 1908 reset_gid_table(ibdev, port); 1909 } 1910 } 1911 1912 spin_unlock_bh(&iboe->lock); 1913 1914 if (update_qps_port > 0) 1915 mlx4_ib_update_qps(ibdev, dev, update_qps_port); 1916 } 1917 1918 static int mlx4_ib_netdev_event(struct notifier_block *this, 1919 unsigned long event, void *ptr) 1920 { 1921 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1922 struct mlx4_ib_dev *ibdev; 1923 1924 if (!net_eq(dev_net(dev), &init_net)) 1925 return NOTIFY_DONE; 1926 1927 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 1928 mlx4_ib_scan_netdevs(ibdev, dev, event); 1929 1930 return NOTIFY_DONE; 1931 } 1932 1933 static void init_pkeys(struct mlx4_ib_dev *ibdev) 1934 { 1935 int port; 1936 int slave; 1937 int i; 1938 1939 if (mlx4_is_master(ibdev->dev)) { 1940 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) { 1941 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1942 for (i = 0; 1943 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1944 ++i) { 1945 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 1946 /* master has the identity virt2phys pkey mapping */ 1947 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 1948 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 1949 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 1950 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 1951 } 1952 } 1953 } 1954 /* initialize pkey cache */ 1955 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1956 for (i = 0; 1957 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1958 ++i) 1959 ibdev->pkeys.phys_pkey_cache[port-1][i] = 1960 (i) ? 0 : 0xFFFF; 1961 } 1962 } 1963 } 1964 1965 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1966 { 1967 char name[80]; 1968 int eq_per_port = 0; 1969 int added_eqs = 0; 1970 int total_eqs = 0; 1971 int i, j, eq; 1972 1973 /* Legacy mode or comp_pool is not large enough */ 1974 if (dev->caps.comp_pool == 0 || 1975 dev->caps.num_ports > dev->caps.comp_pool) 1976 return; 1977 1978 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/ 1979 dev->caps.num_ports); 1980 1981 /* Init eq table */ 1982 added_eqs = 0; 1983 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 1984 added_eqs += eq_per_port; 1985 1986 total_eqs = dev->caps.num_comp_vectors + added_eqs; 1987 1988 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); 1989 if (!ibdev->eq_table) 1990 return; 1991 1992 ibdev->eq_added = added_eqs; 1993 1994 eq = 0; 1995 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { 1996 for (j = 0; j < eq_per_port; j++) { 1997 snprintf(name, sizeof(name), "mlx4-ib-%d-%d@%s", 1998 i, j, dev->pdev->bus->name); 1999 /* Set IRQ for specific name (per ring) */ 2000 if (mlx4_assign_eq(dev, name, NULL, 2001 &ibdev->eq_table[eq])) { 2002 /* Use legacy (same as mlx4_en driver) */ 2003 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); 2004 ibdev->eq_table[eq] = 2005 (eq % dev->caps.num_comp_vectors); 2006 } 2007 eq++; 2008 } 2009 } 2010 2011 /* Fill the reset of the vector with legacy EQ */ 2012 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) 2013 ibdev->eq_table[eq++] = i; 2014 2015 /* Advertise the new number of EQs to clients */ 2016 ibdev->ib_dev.num_comp_vectors = total_eqs; 2017 } 2018 2019 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 2020 { 2021 int i; 2022 2023 /* no additional eqs were added */ 2024 if (!ibdev->eq_table) 2025 return; 2026 2027 /* Reset the advertised EQ number */ 2028 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2029 2030 /* Free only the added eqs */ 2031 for (i = 0; i < ibdev->eq_added; i++) { 2032 /* Don't free legacy eqs if used */ 2033 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) 2034 continue; 2035 mlx4_release_eq(dev, ibdev->eq_table[i]); 2036 } 2037 2038 kfree(ibdev->eq_table); 2039 } 2040 2041 static void *mlx4_ib_add(struct mlx4_dev *dev) 2042 { 2043 struct mlx4_ib_dev *ibdev; 2044 int num_ports = 0; 2045 int i, j; 2046 int err; 2047 struct mlx4_ib_iboe *iboe; 2048 int ib_num_ports = 0; 2049 2050 pr_info_once("%s", mlx4_ib_version); 2051 2052 num_ports = 0; 2053 mlx4_foreach_ib_transport_port(i, dev) 2054 num_ports++; 2055 2056 /* No point in registering a device with no ports... */ 2057 if (num_ports == 0) 2058 return NULL; 2059 2060 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 2061 if (!ibdev) { 2062 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 2063 return NULL; 2064 } 2065 2066 iboe = &ibdev->iboe; 2067 2068 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 2069 goto err_dealloc; 2070 2071 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 2072 goto err_pd; 2073 2074 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 2075 PAGE_SIZE); 2076 if (!ibdev->uar_map) 2077 goto err_uar; 2078 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 2079 2080 ibdev->dev = dev; 2081 2082 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 2083 ibdev->ib_dev.owner = THIS_MODULE; 2084 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 2085 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 2086 ibdev->num_ports = num_ports; 2087 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; 2088 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 2089 ibdev->ib_dev.dma_device = &dev->pdev->dev; 2090 2091 if (dev->caps.userspace_caps) 2092 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 2093 else 2094 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; 2095 2096 ibdev->ib_dev.uverbs_cmd_mask = 2097 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 2098 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 2099 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 2100 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 2101 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 2102 (1ull << IB_USER_VERBS_CMD_REG_MR) | 2103 (1ull << IB_USER_VERBS_CMD_REREG_MR) | 2104 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 2105 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 2106 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 2107 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 2108 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 2109 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 2110 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 2111 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 2112 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 2113 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 2114 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 2115 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 2116 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 2117 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 2118 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 2119 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 2120 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 2121 2122 ibdev->ib_dev.query_device = mlx4_ib_query_device; 2123 ibdev->ib_dev.query_port = mlx4_ib_query_port; 2124 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 2125 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 2126 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 2127 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 2128 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 2129 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 2130 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 2131 ibdev->ib_dev.mmap = mlx4_ib_mmap; 2132 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 2133 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 2134 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 2135 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 2136 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 2137 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 2138 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 2139 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 2140 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 2141 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 2142 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 2143 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 2144 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 2145 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 2146 ibdev->ib_dev.post_send = mlx4_ib_post_send; 2147 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 2148 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 2149 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 2150 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 2151 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 2152 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 2153 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 2154 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 2155 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 2156 ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr; 2157 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 2158 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 2159 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 2160 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 2161 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 2162 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 2163 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 2164 2165 if (!mlx4_is_slave(ibdev->dev)) { 2166 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 2167 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 2168 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 2169 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 2170 } 2171 2172 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2173 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { 2174 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw; 2175 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw; 2176 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw; 2177 2178 ibdev->ib_dev.uverbs_cmd_mask |= 2179 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 2180 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 2181 } 2182 2183 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 2184 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 2185 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 2186 ibdev->ib_dev.uverbs_cmd_mask |= 2187 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 2188 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 2189 } 2190 2191 if (check_flow_steering_support(dev)) { 2192 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; 2193 ibdev->ib_dev.create_flow = mlx4_ib_create_flow; 2194 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow; 2195 2196 ibdev->ib_dev.uverbs_ex_cmd_mask |= 2197 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 2198 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 2199 } 2200 2201 mlx4_ib_alloc_eqs(dev, ibdev); 2202 2203 spin_lock_init(&iboe->lock); 2204 2205 if (init_node_data(ibdev)) 2206 goto err_map; 2207 2208 for (i = 0; i < ibdev->num_ports; ++i) { 2209 mutex_init(&ibdev->qp1_proxy_lock[i]); 2210 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 2211 IB_LINK_LAYER_ETHERNET) { 2212 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); 2213 if (err) 2214 ibdev->counters[i] = -1; 2215 } else { 2216 ibdev->counters[i] = -1; 2217 } 2218 } 2219 2220 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 2221 ib_num_ports++; 2222 2223 spin_lock_init(&ibdev->sm_lock); 2224 mutex_init(&ibdev->cap_mask_mutex); 2225 2226 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && 2227 ib_num_ports) { 2228 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; 2229 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, 2230 MLX4_IB_UC_STEER_QPN_ALIGN, 2231 &ibdev->steer_qpn_base); 2232 if (err) 2233 goto err_counter; 2234 2235 ibdev->ib_uc_qpns_bitmap = 2236 kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) * 2237 sizeof(long), 2238 GFP_KERNEL); 2239 if (!ibdev->ib_uc_qpns_bitmap) { 2240 dev_err(&dev->pdev->dev, "bit map alloc failed\n"); 2241 goto err_steer_qp_release; 2242 } 2243 2244 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count); 2245 2246 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( 2247 dev, ibdev->steer_qpn_base, 2248 ibdev->steer_qpn_base + 2249 ibdev->steer_qpn_count - 1); 2250 if (err) 2251 goto err_steer_free_bitmap; 2252 } 2253 2254 for (j = 1; j <= ibdev->dev->caps.num_ports; j++) 2255 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); 2256 2257 if (ib_register_device(&ibdev->ib_dev, NULL)) 2258 goto err_steer_free_bitmap; 2259 2260 if (mlx4_ib_mad_init(ibdev)) 2261 goto err_reg; 2262 2263 if (mlx4_ib_init_sriov(ibdev)) 2264 goto err_mad; 2265 2266 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) { 2267 if (!iboe->nb.notifier_call) { 2268 iboe->nb.notifier_call = mlx4_ib_netdev_event; 2269 err = register_netdevice_notifier(&iboe->nb); 2270 if (err) { 2271 iboe->nb.notifier_call = NULL; 2272 goto err_notif; 2273 } 2274 } 2275 if (!iboe->nb_inet.notifier_call) { 2276 iboe->nb_inet.notifier_call = mlx4_ib_inet_event; 2277 err = register_inetaddr_notifier(&iboe->nb_inet); 2278 if (err) { 2279 iboe->nb_inet.notifier_call = NULL; 2280 goto err_notif; 2281 } 2282 } 2283 #if IS_ENABLED(CONFIG_IPV6) 2284 if (!iboe->nb_inet6.notifier_call) { 2285 iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event; 2286 err = register_inet6addr_notifier(&iboe->nb_inet6); 2287 if (err) { 2288 iboe->nb_inet6.notifier_call = NULL; 2289 goto err_notif; 2290 } 2291 } 2292 #endif 2293 if (mlx4_ib_init_gid_table(ibdev)) 2294 goto err_notif; 2295 } 2296 2297 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 2298 if (device_create_file(&ibdev->ib_dev.dev, 2299 mlx4_class_attributes[j])) 2300 goto err_notif; 2301 } 2302 2303 ibdev->ib_active = true; 2304 2305 if (mlx4_is_mfunc(ibdev->dev)) 2306 init_pkeys(ibdev); 2307 2308 /* create paravirt contexts for any VFs which are active */ 2309 if (mlx4_is_master(ibdev->dev)) { 2310 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 2311 if (j == mlx4_master_func_num(ibdev->dev)) 2312 continue; 2313 if (mlx4_is_slave_active(ibdev->dev, j)) 2314 do_slave_init(ibdev, j, 1); 2315 } 2316 } 2317 return ibdev; 2318 2319 err_notif: 2320 if (ibdev->iboe.nb.notifier_call) { 2321 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2322 pr_warn("failure unregistering notifier\n"); 2323 ibdev->iboe.nb.notifier_call = NULL; 2324 } 2325 if (ibdev->iboe.nb_inet.notifier_call) { 2326 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet)) 2327 pr_warn("failure unregistering notifier\n"); 2328 ibdev->iboe.nb_inet.notifier_call = NULL; 2329 } 2330 #if IS_ENABLED(CONFIG_IPV6) 2331 if (ibdev->iboe.nb_inet6.notifier_call) { 2332 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6)) 2333 pr_warn("failure unregistering notifier\n"); 2334 ibdev->iboe.nb_inet6.notifier_call = NULL; 2335 } 2336 #endif 2337 flush_workqueue(wq); 2338 2339 mlx4_ib_close_sriov(ibdev); 2340 2341 err_mad: 2342 mlx4_ib_mad_cleanup(ibdev); 2343 2344 err_reg: 2345 ib_unregister_device(&ibdev->ib_dev); 2346 2347 err_steer_free_bitmap: 2348 kfree(ibdev->ib_uc_qpns_bitmap); 2349 2350 err_steer_qp_release: 2351 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) 2352 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2353 ibdev->steer_qpn_count); 2354 err_counter: 2355 for (; i; --i) 2356 if (ibdev->counters[i - 1] != -1) 2357 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 2358 2359 err_map: 2360 iounmap(ibdev->uar_map); 2361 2362 err_uar: 2363 mlx4_uar_free(dev, &ibdev->priv_uar); 2364 2365 err_pd: 2366 mlx4_pd_free(dev, ibdev->priv_pdn); 2367 2368 err_dealloc: 2369 ib_dealloc_device(&ibdev->ib_dev); 2370 2371 return NULL; 2372 } 2373 2374 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) 2375 { 2376 int offset; 2377 2378 WARN_ON(!dev->ib_uc_qpns_bitmap); 2379 2380 offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, 2381 dev->steer_qpn_count, 2382 get_count_order(count)); 2383 if (offset < 0) 2384 return offset; 2385 2386 *qpn = dev->steer_qpn_base + offset; 2387 return 0; 2388 } 2389 2390 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) 2391 { 2392 if (!qpn || 2393 dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) 2394 return; 2395 2396 BUG_ON(qpn < dev->steer_qpn_base); 2397 2398 bitmap_release_region(dev->ib_uc_qpns_bitmap, 2399 qpn - dev->steer_qpn_base, 2400 get_count_order(count)); 2401 } 2402 2403 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 2404 int is_attach) 2405 { 2406 int err; 2407 size_t flow_size; 2408 struct ib_flow_attr *flow = NULL; 2409 struct ib_flow_spec_ib *ib_spec; 2410 2411 if (is_attach) { 2412 flow_size = sizeof(struct ib_flow_attr) + 2413 sizeof(struct ib_flow_spec_ib); 2414 flow = kzalloc(flow_size, GFP_KERNEL); 2415 if (!flow) 2416 return -ENOMEM; 2417 flow->port = mqp->port; 2418 flow->num_of_specs = 1; 2419 flow->size = flow_size; 2420 ib_spec = (struct ib_flow_spec_ib *)(flow + 1); 2421 ib_spec->type = IB_FLOW_SPEC_IB; 2422 ib_spec->size = sizeof(struct ib_flow_spec_ib); 2423 /* Add an empty rule for IB L2 */ 2424 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); 2425 2426 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, 2427 IB_FLOW_DOMAIN_NIC, 2428 MLX4_FS_REGULAR, 2429 &mqp->reg_id); 2430 } else { 2431 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); 2432 } 2433 kfree(flow); 2434 return err; 2435 } 2436 2437 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 2438 { 2439 struct mlx4_ib_dev *ibdev = ibdev_ptr; 2440 int p; 2441 2442 ibdev->ib_active = false; 2443 flush_workqueue(wq); 2444 2445 mlx4_ib_close_sriov(ibdev); 2446 mlx4_ib_mad_cleanup(ibdev); 2447 ib_unregister_device(&ibdev->ib_dev); 2448 if (ibdev->iboe.nb.notifier_call) { 2449 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 2450 pr_warn("failure unregistering notifier\n"); 2451 ibdev->iboe.nb.notifier_call = NULL; 2452 } 2453 2454 if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) { 2455 mlx4_qp_release_range(dev, ibdev->steer_qpn_base, 2456 ibdev->steer_qpn_count); 2457 kfree(ibdev->ib_uc_qpns_bitmap); 2458 } 2459 2460 if (ibdev->iboe.nb_inet.notifier_call) { 2461 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet)) 2462 pr_warn("failure unregistering notifier\n"); 2463 ibdev->iboe.nb_inet.notifier_call = NULL; 2464 } 2465 #if IS_ENABLED(CONFIG_IPV6) 2466 if (ibdev->iboe.nb_inet6.notifier_call) { 2467 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6)) 2468 pr_warn("failure unregistering notifier\n"); 2469 ibdev->iboe.nb_inet6.notifier_call = NULL; 2470 } 2471 #endif 2472 2473 iounmap(ibdev->uar_map); 2474 for (p = 0; p < ibdev->num_ports; ++p) 2475 if (ibdev->counters[p] != -1) 2476 mlx4_counter_free(ibdev->dev, ibdev->counters[p]); 2477 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 2478 mlx4_CLOSE_PORT(dev, p); 2479 2480 mlx4_ib_free_eqs(dev, ibdev); 2481 2482 mlx4_uar_free(dev, &ibdev->priv_uar); 2483 mlx4_pd_free(dev, ibdev->priv_pdn); 2484 ib_dealloc_device(&ibdev->ib_dev); 2485 } 2486 2487 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 2488 { 2489 struct mlx4_ib_demux_work **dm = NULL; 2490 struct mlx4_dev *dev = ibdev->dev; 2491 int i; 2492 unsigned long flags; 2493 struct mlx4_active_ports actv_ports; 2494 unsigned int ports; 2495 unsigned int first_port; 2496 2497 if (!mlx4_is_master(dev)) 2498 return; 2499 2500 actv_ports = mlx4_get_active_ports(dev, slave); 2501 ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); 2502 first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); 2503 2504 dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); 2505 if (!dm) { 2506 pr_err("failed to allocate memory for tunneling qp update\n"); 2507 goto out; 2508 } 2509 2510 for (i = 0; i < ports; i++) { 2511 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 2512 if (!dm[i]) { 2513 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 2514 for (i = 0; i < dev->caps.num_ports; i++) { 2515 if (dm[i]) 2516 kfree(dm[i]); 2517 } 2518 goto out; 2519 } 2520 } 2521 /* initialize or tear down tunnel QPs for the slave */ 2522 for (i = 0; i < ports; i++) { 2523 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 2524 dm[i]->port = first_port + i + 1; 2525 dm[i]->slave = slave; 2526 dm[i]->do_init = do_init; 2527 dm[i]->dev = ibdev; 2528 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 2529 if (!ibdev->sriov.is_going_down) 2530 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 2531 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 2532 } 2533 out: 2534 kfree(dm); 2535 return; 2536 } 2537 2538 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 2539 enum mlx4_dev_event event, unsigned long param) 2540 { 2541 struct ib_event ibev; 2542 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 2543 struct mlx4_eqe *eqe = NULL; 2544 struct ib_event_work *ew; 2545 int p = 0; 2546 2547 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 2548 eqe = (struct mlx4_eqe *)param; 2549 else 2550 p = (int) param; 2551 2552 switch (event) { 2553 case MLX4_DEV_EVENT_PORT_UP: 2554 if (p > ibdev->num_ports) 2555 return; 2556 if (mlx4_is_master(dev) && 2557 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 2558 IB_LINK_LAYER_INFINIBAND) { 2559 mlx4_ib_invalidate_all_guid_record(ibdev, p); 2560 } 2561 ibev.event = IB_EVENT_PORT_ACTIVE; 2562 break; 2563 2564 case MLX4_DEV_EVENT_PORT_DOWN: 2565 if (p > ibdev->num_ports) 2566 return; 2567 ibev.event = IB_EVENT_PORT_ERR; 2568 break; 2569 2570 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 2571 ibdev->ib_active = false; 2572 ibev.event = IB_EVENT_DEVICE_FATAL; 2573 break; 2574 2575 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 2576 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 2577 if (!ew) { 2578 pr_err("failed to allocate memory for events work\n"); 2579 break; 2580 } 2581 2582 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 2583 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 2584 ew->ib_dev = ibdev; 2585 /* need to queue only for port owner, which uses GEN_EQE */ 2586 if (mlx4_is_master(dev)) 2587 queue_work(wq, &ew->work); 2588 else 2589 handle_port_mgmt_change_event(&ew->work); 2590 return; 2591 2592 case MLX4_DEV_EVENT_SLAVE_INIT: 2593 /* here, p is the slave id */ 2594 do_slave_init(ibdev, p, 1); 2595 return; 2596 2597 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 2598 /* here, p is the slave id */ 2599 do_slave_init(ibdev, p, 0); 2600 return; 2601 2602 default: 2603 return; 2604 } 2605 2606 ibev.device = ibdev_ptr; 2607 ibev.element.port_num = (u8) p; 2608 2609 ib_dispatch_event(&ibev); 2610 } 2611 2612 static struct mlx4_interface mlx4_ib_interface = { 2613 .add = mlx4_ib_add, 2614 .remove = mlx4_ib_remove, 2615 .event = mlx4_ib_event, 2616 .protocol = MLX4_PROT_IB_IPV6 2617 }; 2618 2619 static int __init mlx4_ib_init(void) 2620 { 2621 int err; 2622 2623 wq = create_singlethread_workqueue("mlx4_ib"); 2624 if (!wq) 2625 return -ENOMEM; 2626 2627 err = mlx4_ib_mcg_init(); 2628 if (err) 2629 goto clean_wq; 2630 2631 err = mlx4_register_interface(&mlx4_ib_interface); 2632 if (err) 2633 goto clean_mcg; 2634 2635 return 0; 2636 2637 clean_mcg: 2638 mlx4_ib_mcg_destroy(); 2639 2640 clean_wq: 2641 destroy_workqueue(wq); 2642 return err; 2643 } 2644 2645 static void __exit mlx4_ib_cleanup(void) 2646 { 2647 mlx4_unregister_interface(&mlx4_ib_interface); 2648 mlx4_ib_mcg_destroy(); 2649 destroy_workqueue(wq); 2650 } 2651 2652 module_init(mlx4_ib_init); 2653 module_exit(mlx4_ib_cleanup); 2654