1 /* 2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/debugfs.h> 34 #include <linux/highmem.h> 35 #include <linux/module.h> 36 #include <linux/init.h> 37 #include <linux/errno.h> 38 #include <linux/pci.h> 39 #include <linux/dma-mapping.h> 40 #include <linux/slab.h> 41 #include <linux/bitmap.h> 42 #include <linux/sched.h> 43 #include <linux/sched/mm.h> 44 #include <linux/sched/task.h> 45 #include <linux/delay.h> 46 #include <rdma/ib_user_verbs.h> 47 #include <rdma/ib_addr.h> 48 #include <rdma/ib_cache.h> 49 #include <linux/mlx5/port.h> 50 #include <linux/mlx5/vport.h> 51 #include <linux/mlx5/fs.h> 52 #include <linux/mlx5/eswitch.h> 53 #include <linux/list.h> 54 #include <rdma/ib_smi.h> 55 #include <rdma/ib_umem.h> 56 #include <linux/in.h> 57 #include <linux/etherdevice.h> 58 #include "mlx5_ib.h" 59 #include "ib_rep.h" 60 #include "cmd.h" 61 #include "srq.h" 62 #include "qp.h" 63 #include <linux/mlx5/fs_helpers.h> 64 #include <linux/mlx5/accel.h> 65 #include <rdma/uverbs_std_types.h> 66 #include <rdma/mlx5_user_ioctl_verbs.h> 67 #include <rdma/mlx5_user_ioctl_cmds.h> 68 #include <rdma/ib_umem_odp.h> 69 70 #define UVERBS_MODULE_NAME mlx5_ib 71 #include <rdma/uverbs_named_ioctl.h> 72 73 #define DRIVER_NAME "mlx5_ib" 74 #define DRIVER_VERSION "5.0-0" 75 76 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>"); 77 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver"); 78 MODULE_LICENSE("Dual BSD/GPL"); 79 80 static char mlx5_version[] = 81 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v" 82 DRIVER_VERSION "\n"; 83 84 struct mlx5_ib_event_work { 85 struct work_struct work; 86 union { 87 struct mlx5_ib_dev *dev; 88 struct mlx5_ib_multiport_info *mpi; 89 }; 90 bool is_slave; 91 unsigned int event; 92 void *param; 93 }; 94 95 enum { 96 MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3, 97 }; 98 99 static struct workqueue_struct *mlx5_ib_event_wq; 100 static LIST_HEAD(mlx5_ib_unaffiliated_port_list); 101 static LIST_HEAD(mlx5_ib_dev_list); 102 /* 103 * This mutex should be held when accessing either of the above lists 104 */ 105 static DEFINE_MUTEX(mlx5_ib_multiport_mutex); 106 107 /* We can't use an array for xlt_emergency_page because dma_map_single 108 * doesn't work on kernel modules memory 109 */ 110 static unsigned long xlt_emergency_page; 111 static struct mutex xlt_emergency_page_mutex; 112 113 struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi) 114 { 115 struct mlx5_ib_dev *dev; 116 117 mutex_lock(&mlx5_ib_multiport_mutex); 118 dev = mpi->ibdev; 119 mutex_unlock(&mlx5_ib_multiport_mutex); 120 return dev; 121 } 122 123 static enum rdma_link_layer 124 mlx5_port_type_cap_to_rdma_ll(int port_type_cap) 125 { 126 switch (port_type_cap) { 127 case MLX5_CAP_PORT_TYPE_IB: 128 return IB_LINK_LAYER_INFINIBAND; 129 case MLX5_CAP_PORT_TYPE_ETH: 130 return IB_LINK_LAYER_ETHERNET; 131 default: 132 return IB_LINK_LAYER_UNSPECIFIED; 133 } 134 } 135 136 static enum rdma_link_layer 137 mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num) 138 { 139 struct mlx5_ib_dev *dev = to_mdev(device); 140 int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type); 141 142 return mlx5_port_type_cap_to_rdma_ll(port_type_cap); 143 } 144 145 static int get_port_state(struct ib_device *ibdev, 146 u8 port_num, 147 enum ib_port_state *state) 148 { 149 struct ib_port_attr attr; 150 int ret; 151 152 memset(&attr, 0, sizeof(attr)); 153 ret = ibdev->ops.query_port(ibdev, port_num, &attr); 154 if (!ret) 155 *state = attr.state; 156 return ret; 157 } 158 159 static struct mlx5_roce *mlx5_get_rep_roce(struct mlx5_ib_dev *dev, 160 struct net_device *ndev, 161 u8 *port_num) 162 { 163 struct mlx5_eswitch *esw = dev->mdev->priv.eswitch; 164 struct net_device *rep_ndev; 165 struct mlx5_ib_port *port; 166 int i; 167 168 for (i = 0; i < dev->num_ports; i++) { 169 port = &dev->port[i]; 170 if (!port->rep) 171 continue; 172 173 read_lock(&port->roce.netdev_lock); 174 rep_ndev = mlx5_ib_get_rep_netdev(esw, 175 port->rep->vport); 176 if (rep_ndev == ndev) { 177 read_unlock(&port->roce.netdev_lock); 178 *port_num = i + 1; 179 return &port->roce; 180 } 181 read_unlock(&port->roce.netdev_lock); 182 } 183 184 return NULL; 185 } 186 187 static int mlx5_netdev_event(struct notifier_block *this, 188 unsigned long event, void *ptr) 189 { 190 struct mlx5_roce *roce = container_of(this, struct mlx5_roce, nb); 191 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 192 u8 port_num = roce->native_port_num; 193 struct mlx5_core_dev *mdev; 194 struct mlx5_ib_dev *ibdev; 195 196 ibdev = roce->dev; 197 mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL); 198 if (!mdev) 199 return NOTIFY_DONE; 200 201 switch (event) { 202 case NETDEV_REGISTER: 203 /* Should already be registered during the load */ 204 if (ibdev->is_rep) 205 break; 206 write_lock(&roce->netdev_lock); 207 if (ndev->dev.parent == mdev->device) 208 roce->netdev = ndev; 209 write_unlock(&roce->netdev_lock); 210 break; 211 212 case NETDEV_UNREGISTER: 213 /* In case of reps, ib device goes away before the netdevs */ 214 write_lock(&roce->netdev_lock); 215 if (roce->netdev == ndev) 216 roce->netdev = NULL; 217 write_unlock(&roce->netdev_lock); 218 break; 219 220 case NETDEV_CHANGE: 221 case NETDEV_UP: 222 case NETDEV_DOWN: { 223 struct net_device *lag_ndev = mlx5_lag_get_roce_netdev(mdev); 224 struct net_device *upper = NULL; 225 226 if (lag_ndev) { 227 upper = netdev_master_upper_dev_get(lag_ndev); 228 dev_put(lag_ndev); 229 } 230 231 if (ibdev->is_rep) 232 roce = mlx5_get_rep_roce(ibdev, ndev, &port_num); 233 if (!roce) 234 return NOTIFY_DONE; 235 if ((upper == ndev || (!upper && ndev == roce->netdev)) 236 && ibdev->ib_active) { 237 struct ib_event ibev = { }; 238 enum ib_port_state port_state; 239 240 if (get_port_state(&ibdev->ib_dev, port_num, 241 &port_state)) 242 goto done; 243 244 if (roce->last_port_state == port_state) 245 goto done; 246 247 roce->last_port_state = port_state; 248 ibev.device = &ibdev->ib_dev; 249 if (port_state == IB_PORT_DOWN) 250 ibev.event = IB_EVENT_PORT_ERR; 251 else if (port_state == IB_PORT_ACTIVE) 252 ibev.event = IB_EVENT_PORT_ACTIVE; 253 else 254 goto done; 255 256 ibev.element.port_num = port_num; 257 ib_dispatch_event(&ibev); 258 } 259 break; 260 } 261 262 default: 263 break; 264 } 265 done: 266 mlx5_ib_put_native_port_mdev(ibdev, port_num); 267 return NOTIFY_DONE; 268 } 269 270 static struct net_device *mlx5_ib_get_netdev(struct ib_device *device, 271 u8 port_num) 272 { 273 struct mlx5_ib_dev *ibdev = to_mdev(device); 274 struct net_device *ndev; 275 struct mlx5_core_dev *mdev; 276 277 mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL); 278 if (!mdev) 279 return NULL; 280 281 ndev = mlx5_lag_get_roce_netdev(mdev); 282 if (ndev) 283 goto out; 284 285 /* Ensure ndev does not disappear before we invoke dev_hold() 286 */ 287 read_lock(&ibdev->port[port_num - 1].roce.netdev_lock); 288 ndev = ibdev->port[port_num - 1].roce.netdev; 289 if (ndev) 290 dev_hold(ndev); 291 read_unlock(&ibdev->port[port_num - 1].roce.netdev_lock); 292 293 out: 294 mlx5_ib_put_native_port_mdev(ibdev, port_num); 295 return ndev; 296 } 297 298 struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *ibdev, 299 u8 ib_port_num, 300 u8 *native_port_num) 301 { 302 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev, 303 ib_port_num); 304 struct mlx5_core_dev *mdev = NULL; 305 struct mlx5_ib_multiport_info *mpi; 306 struct mlx5_ib_port *port; 307 308 if (!mlx5_core_mp_enabled(ibdev->mdev) || 309 ll != IB_LINK_LAYER_ETHERNET) { 310 if (native_port_num) 311 *native_port_num = ib_port_num; 312 return ibdev->mdev; 313 } 314 315 if (native_port_num) 316 *native_port_num = 1; 317 318 port = &ibdev->port[ib_port_num - 1]; 319 if (!port) 320 return NULL; 321 322 spin_lock(&port->mp.mpi_lock); 323 mpi = ibdev->port[ib_port_num - 1].mp.mpi; 324 if (mpi && !mpi->unaffiliate) { 325 mdev = mpi->mdev; 326 /* If it's the master no need to refcount, it'll exist 327 * as long as the ib_dev exists. 328 */ 329 if (!mpi->is_master) 330 mpi->mdev_refcnt++; 331 } 332 spin_unlock(&port->mp.mpi_lock); 333 334 return mdev; 335 } 336 337 void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *ibdev, u8 port_num) 338 { 339 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev, 340 port_num); 341 struct mlx5_ib_multiport_info *mpi; 342 struct mlx5_ib_port *port; 343 344 if (!mlx5_core_mp_enabled(ibdev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 345 return; 346 347 port = &ibdev->port[port_num - 1]; 348 349 spin_lock(&port->mp.mpi_lock); 350 mpi = ibdev->port[port_num - 1].mp.mpi; 351 if (mpi->is_master) 352 goto out; 353 354 mpi->mdev_refcnt--; 355 if (mpi->unaffiliate) 356 complete(&mpi->unref_comp); 357 out: 358 spin_unlock(&port->mp.mpi_lock); 359 } 360 361 static int translate_eth_legacy_proto_oper(u32 eth_proto_oper, u8 *active_speed, 362 u8 *active_width) 363 { 364 switch (eth_proto_oper) { 365 case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII): 366 case MLX5E_PROT_MASK(MLX5E_1000BASE_KX): 367 case MLX5E_PROT_MASK(MLX5E_100BASE_TX): 368 case MLX5E_PROT_MASK(MLX5E_1000BASE_T): 369 *active_width = IB_WIDTH_1X; 370 *active_speed = IB_SPEED_SDR; 371 break; 372 case MLX5E_PROT_MASK(MLX5E_10GBASE_T): 373 case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4): 374 case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4): 375 case MLX5E_PROT_MASK(MLX5E_10GBASE_KR): 376 case MLX5E_PROT_MASK(MLX5E_10GBASE_CR): 377 case MLX5E_PROT_MASK(MLX5E_10GBASE_SR): 378 case MLX5E_PROT_MASK(MLX5E_10GBASE_ER): 379 *active_width = IB_WIDTH_1X; 380 *active_speed = IB_SPEED_QDR; 381 break; 382 case MLX5E_PROT_MASK(MLX5E_25GBASE_CR): 383 case MLX5E_PROT_MASK(MLX5E_25GBASE_KR): 384 case MLX5E_PROT_MASK(MLX5E_25GBASE_SR): 385 *active_width = IB_WIDTH_1X; 386 *active_speed = IB_SPEED_EDR; 387 break; 388 case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4): 389 case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4): 390 case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4): 391 case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4): 392 *active_width = IB_WIDTH_4X; 393 *active_speed = IB_SPEED_QDR; 394 break; 395 case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2): 396 case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2): 397 case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2): 398 *active_width = IB_WIDTH_1X; 399 *active_speed = IB_SPEED_HDR; 400 break; 401 case MLX5E_PROT_MASK(MLX5E_56GBASE_R4): 402 *active_width = IB_WIDTH_4X; 403 *active_speed = IB_SPEED_FDR; 404 break; 405 case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4): 406 case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4): 407 case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4): 408 case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4): 409 *active_width = IB_WIDTH_4X; 410 *active_speed = IB_SPEED_EDR; 411 break; 412 default: 413 return -EINVAL; 414 } 415 416 return 0; 417 } 418 419 static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u8 *active_speed, 420 u8 *active_width) 421 { 422 switch (eth_proto_oper) { 423 case MLX5E_PROT_MASK(MLX5E_SGMII_100M): 424 case MLX5E_PROT_MASK(MLX5E_1000BASE_X_SGMII): 425 *active_width = IB_WIDTH_1X; 426 *active_speed = IB_SPEED_SDR; 427 break; 428 case MLX5E_PROT_MASK(MLX5E_5GBASE_R): 429 *active_width = IB_WIDTH_1X; 430 *active_speed = IB_SPEED_DDR; 431 break; 432 case MLX5E_PROT_MASK(MLX5E_10GBASE_XFI_XAUI_1): 433 *active_width = IB_WIDTH_1X; 434 *active_speed = IB_SPEED_QDR; 435 break; 436 case MLX5E_PROT_MASK(MLX5E_40GBASE_XLAUI_4_XLPPI_4): 437 *active_width = IB_WIDTH_4X; 438 *active_speed = IB_SPEED_QDR; 439 break; 440 case MLX5E_PROT_MASK(MLX5E_25GAUI_1_25GBASE_CR_KR): 441 *active_width = IB_WIDTH_1X; 442 *active_speed = IB_SPEED_EDR; 443 break; 444 case MLX5E_PROT_MASK(MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2): 445 *active_width = IB_WIDTH_2X; 446 *active_speed = IB_SPEED_EDR; 447 break; 448 case MLX5E_PROT_MASK(MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR): 449 *active_width = IB_WIDTH_1X; 450 *active_speed = IB_SPEED_HDR; 451 break; 452 case MLX5E_PROT_MASK(MLX5E_CAUI_4_100GBASE_CR4_KR4): 453 *active_width = IB_WIDTH_4X; 454 *active_speed = IB_SPEED_EDR; 455 break; 456 case MLX5E_PROT_MASK(MLX5E_100GAUI_2_100GBASE_CR2_KR2): 457 *active_width = IB_WIDTH_2X; 458 *active_speed = IB_SPEED_HDR; 459 break; 460 case MLX5E_PROT_MASK(MLX5E_200GAUI_4_200GBASE_CR4_KR4): 461 *active_width = IB_WIDTH_4X; 462 *active_speed = IB_SPEED_HDR; 463 break; 464 default: 465 return -EINVAL; 466 } 467 468 return 0; 469 } 470 471 static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed, 472 u8 *active_width, bool ext) 473 { 474 return ext ? 475 translate_eth_ext_proto_oper(eth_proto_oper, active_speed, 476 active_width) : 477 translate_eth_legacy_proto_oper(eth_proto_oper, active_speed, 478 active_width); 479 } 480 481 static int mlx5_query_port_roce(struct ib_device *device, u8 port_num, 482 struct ib_port_attr *props) 483 { 484 struct mlx5_ib_dev *dev = to_mdev(device); 485 u32 out[MLX5_ST_SZ_DW(ptys_reg)] = {0}; 486 struct mlx5_core_dev *mdev; 487 struct net_device *ndev, *upper; 488 enum ib_mtu ndev_ib_mtu; 489 bool put_mdev = true; 490 u16 qkey_viol_cntr; 491 u32 eth_prot_oper; 492 u8 mdev_port_num; 493 bool ext; 494 int err; 495 496 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num); 497 if (!mdev) { 498 /* This means the port isn't affiliated yet. Get the 499 * info for the master port instead. 500 */ 501 put_mdev = false; 502 mdev = dev->mdev; 503 mdev_port_num = 1; 504 port_num = 1; 505 } 506 507 /* Possible bad flows are checked before filling out props so in case 508 * of an error it will still be zeroed out. 509 * Use native port in case of reps 510 */ 511 if (dev->is_rep) 512 err = mlx5_query_port_ptys(mdev, out, sizeof(out), MLX5_PTYS_EN, 513 1); 514 else 515 err = mlx5_query_port_ptys(mdev, out, sizeof(out), MLX5_PTYS_EN, 516 mdev_port_num); 517 if (err) 518 goto out; 519 ext = MLX5_CAP_PCAM_FEATURE(dev->mdev, ptys_extended_ethernet); 520 eth_prot_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper); 521 522 props->active_width = IB_WIDTH_4X; 523 props->active_speed = IB_SPEED_QDR; 524 525 translate_eth_proto_oper(eth_prot_oper, &props->active_speed, 526 &props->active_width, ext); 527 528 props->port_cap_flags |= IB_PORT_CM_SUP; 529 props->ip_gids = true; 530 531 props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev, 532 roce_address_table_size); 533 props->max_mtu = IB_MTU_4096; 534 props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg); 535 props->pkey_tbl_len = 1; 536 props->state = IB_PORT_DOWN; 537 props->phys_state = IB_PORT_PHYS_STATE_DISABLED; 538 539 mlx5_query_nic_vport_qkey_viol_cntr(mdev, &qkey_viol_cntr); 540 props->qkey_viol_cntr = qkey_viol_cntr; 541 542 /* If this is a stub query for an unaffiliated port stop here */ 543 if (!put_mdev) 544 goto out; 545 546 ndev = mlx5_ib_get_netdev(device, port_num); 547 if (!ndev) 548 goto out; 549 550 if (dev->lag_active) { 551 rcu_read_lock(); 552 upper = netdev_master_upper_dev_get_rcu(ndev); 553 if (upper) { 554 dev_put(ndev); 555 ndev = upper; 556 dev_hold(ndev); 557 } 558 rcu_read_unlock(); 559 } 560 561 if (netif_running(ndev) && netif_carrier_ok(ndev)) { 562 props->state = IB_PORT_ACTIVE; 563 props->phys_state = IB_PORT_PHYS_STATE_LINK_UP; 564 } 565 566 ndev_ib_mtu = iboe_get_mtu(ndev->mtu); 567 568 dev_put(ndev); 569 570 props->active_mtu = min(props->max_mtu, ndev_ib_mtu); 571 out: 572 if (put_mdev) 573 mlx5_ib_put_native_port_mdev(dev, port_num); 574 return err; 575 } 576 577 static int set_roce_addr(struct mlx5_ib_dev *dev, u8 port_num, 578 unsigned int index, const union ib_gid *gid, 579 const struct ib_gid_attr *attr) 580 { 581 enum ib_gid_type gid_type = IB_GID_TYPE_IB; 582 u16 vlan_id = 0xffff; 583 u8 roce_version = 0; 584 u8 roce_l3_type = 0; 585 u8 mac[ETH_ALEN]; 586 int ret; 587 588 if (gid) { 589 gid_type = attr->gid_type; 590 ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]); 591 if (ret) 592 return ret; 593 } 594 595 switch (gid_type) { 596 case IB_GID_TYPE_IB: 597 roce_version = MLX5_ROCE_VERSION_1; 598 break; 599 case IB_GID_TYPE_ROCE_UDP_ENCAP: 600 roce_version = MLX5_ROCE_VERSION_2; 601 if (ipv6_addr_v4mapped((void *)gid)) 602 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV4; 603 else 604 roce_l3_type = MLX5_ROCE_L3_TYPE_IPV6; 605 break; 606 607 default: 608 mlx5_ib_warn(dev, "Unexpected GID type %u\n", gid_type); 609 } 610 611 return mlx5_core_roce_gid_set(dev->mdev, index, roce_version, 612 roce_l3_type, gid->raw, mac, 613 vlan_id < VLAN_CFI_MASK, vlan_id, 614 port_num); 615 } 616 617 static int mlx5_ib_add_gid(const struct ib_gid_attr *attr, 618 __always_unused void **context) 619 { 620 return set_roce_addr(to_mdev(attr->device), attr->port_num, 621 attr->index, &attr->gid, attr); 622 } 623 624 static int mlx5_ib_del_gid(const struct ib_gid_attr *attr, 625 __always_unused void **context) 626 { 627 return set_roce_addr(to_mdev(attr->device), attr->port_num, 628 attr->index, NULL, NULL); 629 } 630 631 __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, 632 const struct ib_gid_attr *attr) 633 { 634 if (attr->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP) 635 return 0; 636 637 return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port)); 638 } 639 640 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev) 641 { 642 if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB) 643 return !MLX5_CAP_GEN(dev->mdev, ib_virt); 644 return 0; 645 } 646 647 enum { 648 MLX5_VPORT_ACCESS_METHOD_MAD, 649 MLX5_VPORT_ACCESS_METHOD_HCA, 650 MLX5_VPORT_ACCESS_METHOD_NIC, 651 }; 652 653 static int mlx5_get_vport_access_method(struct ib_device *ibdev) 654 { 655 if (mlx5_use_mad_ifc(to_mdev(ibdev))) 656 return MLX5_VPORT_ACCESS_METHOD_MAD; 657 658 if (mlx5_ib_port_link_layer(ibdev, 1) == 659 IB_LINK_LAYER_ETHERNET) 660 return MLX5_VPORT_ACCESS_METHOD_NIC; 661 662 return MLX5_VPORT_ACCESS_METHOD_HCA; 663 } 664 665 static void get_atomic_caps(struct mlx5_ib_dev *dev, 666 u8 atomic_size_qp, 667 struct ib_device_attr *props) 668 { 669 u8 tmp; 670 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations); 671 u8 atomic_req_8B_endianness_mode = 672 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianness_mode); 673 674 /* Check if HW supports 8 bytes standard atomic operations and capable 675 * of host endianness respond 676 */ 677 tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD; 678 if (((atomic_operations & tmp) == tmp) && 679 (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) && 680 (atomic_req_8B_endianness_mode)) { 681 props->atomic_cap = IB_ATOMIC_HCA; 682 } else { 683 props->atomic_cap = IB_ATOMIC_NONE; 684 } 685 } 686 687 static void get_atomic_caps_qp(struct mlx5_ib_dev *dev, 688 struct ib_device_attr *props) 689 { 690 u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp); 691 692 get_atomic_caps(dev, atomic_size_qp, props); 693 } 694 695 static int mlx5_query_system_image_guid(struct ib_device *ibdev, 696 __be64 *sys_image_guid) 697 { 698 struct mlx5_ib_dev *dev = to_mdev(ibdev); 699 struct mlx5_core_dev *mdev = dev->mdev; 700 u64 tmp; 701 int err; 702 703 switch (mlx5_get_vport_access_method(ibdev)) { 704 case MLX5_VPORT_ACCESS_METHOD_MAD: 705 return mlx5_query_mad_ifc_system_image_guid(ibdev, 706 sys_image_guid); 707 708 case MLX5_VPORT_ACCESS_METHOD_HCA: 709 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp); 710 break; 711 712 case MLX5_VPORT_ACCESS_METHOD_NIC: 713 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp); 714 break; 715 716 default: 717 return -EINVAL; 718 } 719 720 if (!err) 721 *sys_image_guid = cpu_to_be64(tmp); 722 723 return err; 724 725 } 726 727 static int mlx5_query_max_pkeys(struct ib_device *ibdev, 728 u16 *max_pkeys) 729 { 730 struct mlx5_ib_dev *dev = to_mdev(ibdev); 731 struct mlx5_core_dev *mdev = dev->mdev; 732 733 switch (mlx5_get_vport_access_method(ibdev)) { 734 case MLX5_VPORT_ACCESS_METHOD_MAD: 735 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys); 736 737 case MLX5_VPORT_ACCESS_METHOD_HCA: 738 case MLX5_VPORT_ACCESS_METHOD_NIC: 739 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, 740 pkey_table_size)); 741 return 0; 742 743 default: 744 return -EINVAL; 745 } 746 } 747 748 static int mlx5_query_vendor_id(struct ib_device *ibdev, 749 u32 *vendor_id) 750 { 751 struct mlx5_ib_dev *dev = to_mdev(ibdev); 752 753 switch (mlx5_get_vport_access_method(ibdev)) { 754 case MLX5_VPORT_ACCESS_METHOD_MAD: 755 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id); 756 757 case MLX5_VPORT_ACCESS_METHOD_HCA: 758 case MLX5_VPORT_ACCESS_METHOD_NIC: 759 return mlx5_core_query_vendor_id(dev->mdev, vendor_id); 760 761 default: 762 return -EINVAL; 763 } 764 } 765 766 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev, 767 __be64 *node_guid) 768 { 769 u64 tmp; 770 int err; 771 772 switch (mlx5_get_vport_access_method(&dev->ib_dev)) { 773 case MLX5_VPORT_ACCESS_METHOD_MAD: 774 return mlx5_query_mad_ifc_node_guid(dev, node_guid); 775 776 case MLX5_VPORT_ACCESS_METHOD_HCA: 777 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp); 778 break; 779 780 case MLX5_VPORT_ACCESS_METHOD_NIC: 781 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp); 782 break; 783 784 default: 785 return -EINVAL; 786 } 787 788 if (!err) 789 *node_guid = cpu_to_be64(tmp); 790 791 return err; 792 } 793 794 struct mlx5_reg_node_desc { 795 u8 desc[IB_DEVICE_NODE_DESC_MAX]; 796 }; 797 798 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc) 799 { 800 struct mlx5_reg_node_desc in; 801 802 if (mlx5_use_mad_ifc(dev)) 803 return mlx5_query_mad_ifc_node_desc(dev, node_desc); 804 805 memset(&in, 0, sizeof(in)); 806 807 return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc, 808 sizeof(struct mlx5_reg_node_desc), 809 MLX5_REG_NODE_DESC, 0, 0); 810 } 811 812 static int mlx5_ib_query_device(struct ib_device *ibdev, 813 struct ib_device_attr *props, 814 struct ib_udata *uhw) 815 { 816 size_t uhw_outlen = (uhw) ? uhw->outlen : 0; 817 struct mlx5_ib_dev *dev = to_mdev(ibdev); 818 struct mlx5_core_dev *mdev = dev->mdev; 819 int err = -ENOMEM; 820 int max_sq_desc; 821 int max_rq_sg; 822 int max_sq_sg; 823 u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz); 824 bool raw_support = !mlx5_core_mp_enabled(mdev); 825 struct mlx5_ib_query_device_resp resp = {}; 826 size_t resp_len; 827 u64 max_tso; 828 829 resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length); 830 if (uhw_outlen && uhw_outlen < resp_len) 831 return -EINVAL; 832 833 resp.response_length = resp_len; 834 835 if (uhw && uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen)) 836 return -EINVAL; 837 838 memset(props, 0, sizeof(*props)); 839 err = mlx5_query_system_image_guid(ibdev, 840 &props->sys_image_guid); 841 if (err) 842 return err; 843 844 err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys); 845 if (err) 846 return err; 847 848 err = mlx5_query_vendor_id(ibdev, &props->vendor_id); 849 if (err) 850 return err; 851 852 props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) | 853 (fw_rev_min(dev->mdev) << 16) | 854 fw_rev_sub(dev->mdev); 855 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 856 IB_DEVICE_PORT_ACTIVE_EVENT | 857 IB_DEVICE_SYS_IMAGE_GUID | 858 IB_DEVICE_RC_RNR_NAK_GEN; 859 860 if (MLX5_CAP_GEN(mdev, pkv)) 861 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 862 if (MLX5_CAP_GEN(mdev, qkv)) 863 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 864 if (MLX5_CAP_GEN(mdev, apm)) 865 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 866 if (MLX5_CAP_GEN(mdev, xrc)) 867 props->device_cap_flags |= IB_DEVICE_XRC; 868 if (MLX5_CAP_GEN(mdev, imaicl)) { 869 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW | 870 IB_DEVICE_MEM_WINDOW_TYPE_2B; 871 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); 872 /* We support 'Gappy' memory registration too */ 873 props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG; 874 } 875 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 876 if (MLX5_CAP_GEN(mdev, sho)) { 877 props->device_cap_flags |= IB_DEVICE_INTEGRITY_HANDOVER; 878 /* At this stage no support for signature handover */ 879 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 | 880 IB_PROT_T10DIF_TYPE_2 | 881 IB_PROT_T10DIF_TYPE_3; 882 props->sig_guard_cap = IB_GUARD_T10DIF_CRC | 883 IB_GUARD_T10DIF_CSUM; 884 } 885 if (MLX5_CAP_GEN(mdev, block_lb_mc)) 886 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 887 888 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && raw_support) { 889 if (MLX5_CAP_ETH(mdev, csum_cap)) { 890 /* Legacy bit to support old userspace libraries */ 891 props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; 892 props->raw_packet_caps |= IB_RAW_PACKET_CAP_IP_CSUM; 893 } 894 895 if (MLX5_CAP_ETH(dev->mdev, vlan_cap)) 896 props->raw_packet_caps |= 897 IB_RAW_PACKET_CAP_CVLAN_STRIPPING; 898 899 if (offsetofend(typeof(resp), tso_caps) <= uhw_outlen) { 900 max_tso = MLX5_CAP_ETH(mdev, max_lso_cap); 901 if (max_tso) { 902 resp.tso_caps.max_tso = 1 << max_tso; 903 resp.tso_caps.supported_qpts |= 904 1 << IB_QPT_RAW_PACKET; 905 resp.response_length += sizeof(resp.tso_caps); 906 } 907 } 908 909 if (offsetofend(typeof(resp), rss_caps) <= uhw_outlen) { 910 resp.rss_caps.rx_hash_function = 911 MLX5_RX_HASH_FUNC_TOEPLITZ; 912 resp.rss_caps.rx_hash_fields_mask = 913 MLX5_RX_HASH_SRC_IPV4 | 914 MLX5_RX_HASH_DST_IPV4 | 915 MLX5_RX_HASH_SRC_IPV6 | 916 MLX5_RX_HASH_DST_IPV6 | 917 MLX5_RX_HASH_SRC_PORT_TCP | 918 MLX5_RX_HASH_DST_PORT_TCP | 919 MLX5_RX_HASH_SRC_PORT_UDP | 920 MLX5_RX_HASH_DST_PORT_UDP | 921 MLX5_RX_HASH_INNER; 922 if (mlx5_accel_ipsec_device_caps(dev->mdev) & 923 MLX5_ACCEL_IPSEC_CAP_DEVICE) 924 resp.rss_caps.rx_hash_fields_mask |= 925 MLX5_RX_HASH_IPSEC_SPI; 926 resp.response_length += sizeof(resp.rss_caps); 927 } 928 } else { 929 if (offsetofend(typeof(resp), tso_caps) <= uhw_outlen) 930 resp.response_length += sizeof(resp.tso_caps); 931 if (offsetofend(typeof(resp), rss_caps) <= uhw_outlen) 932 resp.response_length += sizeof(resp.rss_caps); 933 } 934 935 if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) { 936 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 937 props->device_cap_flags |= IB_DEVICE_UD_TSO; 938 } 939 940 if (MLX5_CAP_GEN(dev->mdev, rq_delay_drop) && 941 MLX5_CAP_GEN(dev->mdev, general_notification_event) && 942 raw_support) 943 props->raw_packet_caps |= IB_RAW_PACKET_CAP_DELAY_DROP; 944 945 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) && 946 MLX5_CAP_IPOIB_ENHANCED(mdev, csum_cap)) 947 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 948 949 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && 950 MLX5_CAP_ETH(dev->mdev, scatter_fcs) && 951 raw_support) { 952 /* Legacy bit to support old userspace libraries */ 953 props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS; 954 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS; 955 } 956 957 if (MLX5_CAP_DEV_MEM(mdev, memic)) { 958 props->max_dm_size = 959 MLX5_CAP_DEV_MEM(mdev, max_memic_size); 960 } 961 962 if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) 963 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; 964 965 if (MLX5_CAP_GEN(mdev, end_pad)) 966 props->device_cap_flags |= IB_DEVICE_PCI_WRITE_END_PADDING; 967 968 props->vendor_part_id = mdev->pdev->device; 969 props->hw_ver = mdev->pdev->revision; 970 971 props->max_mr_size = ~0ull; 972 props->page_size_cap = ~(min_page_size - 1); 973 props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp); 974 props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz); 975 max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) / 976 sizeof(struct mlx5_wqe_data_seg); 977 max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512); 978 max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) - 979 sizeof(struct mlx5_wqe_raddr_seg)) / 980 sizeof(struct mlx5_wqe_data_seg); 981 props->max_send_sge = max_sq_sg; 982 props->max_recv_sge = max_rq_sg; 983 props->max_sge_rd = MLX5_MAX_SGE_RD; 984 props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq); 985 props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1; 986 props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); 987 props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd); 988 props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp); 989 props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp); 990 props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq); 991 props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1; 992 props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay); 993 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 994 props->max_srq_sge = max_rq_sg - 1; 995 props->max_fast_reg_page_list_len = 996 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size); 997 props->max_pi_fast_reg_page_list_len = 998 props->max_fast_reg_page_list_len / 2; 999 props->max_sgl_rd = 1000 MLX5_CAP_GEN(mdev, max_sgl_for_optimized_performance); 1001 get_atomic_caps_qp(dev, props); 1002 props->masked_atomic_cap = IB_ATOMIC_NONE; 1003 props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg); 1004 props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg); 1005 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 1006 props->max_mcast_grp; 1007 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */ 1008 props->max_ah = INT_MAX; 1009 props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz); 1010 props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL; 1011 1012 if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) { 1013 if (dev->odp_caps.general_caps & IB_ODP_SUPPORT) 1014 props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING; 1015 props->odp_caps = dev->odp_caps; 1016 if (!uhw) { 1017 /* ODP for kernel QPs is not implemented for receive 1018 * WQEs and SRQ WQEs 1019 */ 1020 props->odp_caps.per_transport_caps.rc_odp_caps &= 1021 ~(IB_ODP_SUPPORT_READ | 1022 IB_ODP_SUPPORT_SRQ_RECV); 1023 props->odp_caps.per_transport_caps.uc_odp_caps &= 1024 ~(IB_ODP_SUPPORT_READ | 1025 IB_ODP_SUPPORT_SRQ_RECV); 1026 props->odp_caps.per_transport_caps.ud_odp_caps &= 1027 ~(IB_ODP_SUPPORT_READ | 1028 IB_ODP_SUPPORT_SRQ_RECV); 1029 props->odp_caps.per_transport_caps.xrc_odp_caps &= 1030 ~(IB_ODP_SUPPORT_READ | 1031 IB_ODP_SUPPORT_SRQ_RECV); 1032 } 1033 } 1034 1035 if (MLX5_CAP_GEN(mdev, cd)) 1036 props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL; 1037 1038 if (mlx5_core_is_vf(mdev)) 1039 props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION; 1040 1041 if (mlx5_ib_port_link_layer(ibdev, 1) == 1042 IB_LINK_LAYER_ETHERNET && raw_support) { 1043 props->rss_caps.max_rwq_indirection_tables = 1044 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt); 1045 props->rss_caps.max_rwq_indirection_table_size = 1046 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size); 1047 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET; 1048 props->max_wq_type_rq = 1049 1 << MLX5_CAP_GEN(dev->mdev, log_max_rq); 1050 } 1051 1052 if (MLX5_CAP_GEN(mdev, tag_matching)) { 1053 props->tm_caps.max_num_tags = 1054 (1 << MLX5_CAP_GEN(mdev, log_tag_matching_list_sz)) - 1; 1055 props->tm_caps.max_ops = 1056 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz); 1057 props->tm_caps.max_sge = MLX5_TM_MAX_SGE; 1058 } 1059 1060 if (MLX5_CAP_GEN(mdev, tag_matching) && 1061 MLX5_CAP_GEN(mdev, rndv_offload_rc)) { 1062 props->tm_caps.flags = IB_TM_CAP_RNDV_RC; 1063 props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE; 1064 } 1065 1066 if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) { 1067 props->cq_caps.max_cq_moderation_count = 1068 MLX5_MAX_CQ_COUNT; 1069 props->cq_caps.max_cq_moderation_period = 1070 MLX5_MAX_CQ_PERIOD; 1071 } 1072 1073 if (offsetofend(typeof(resp), cqe_comp_caps) <= uhw_outlen) { 1074 resp.response_length += sizeof(resp.cqe_comp_caps); 1075 1076 if (MLX5_CAP_GEN(dev->mdev, cqe_compression)) { 1077 resp.cqe_comp_caps.max_num = 1078 MLX5_CAP_GEN(dev->mdev, 1079 cqe_compression_max_num); 1080 1081 resp.cqe_comp_caps.supported_format = 1082 MLX5_IB_CQE_RES_FORMAT_HASH | 1083 MLX5_IB_CQE_RES_FORMAT_CSUM; 1084 1085 if (MLX5_CAP_GEN(dev->mdev, mini_cqe_resp_stride_index)) 1086 resp.cqe_comp_caps.supported_format |= 1087 MLX5_IB_CQE_RES_FORMAT_CSUM_STRIDX; 1088 } 1089 } 1090 1091 if (offsetofend(typeof(resp), packet_pacing_caps) <= uhw_outlen && 1092 raw_support) { 1093 if (MLX5_CAP_QOS(mdev, packet_pacing) && 1094 MLX5_CAP_GEN(mdev, qos)) { 1095 resp.packet_pacing_caps.qp_rate_limit_max = 1096 MLX5_CAP_QOS(mdev, packet_pacing_max_rate); 1097 resp.packet_pacing_caps.qp_rate_limit_min = 1098 MLX5_CAP_QOS(mdev, packet_pacing_min_rate); 1099 resp.packet_pacing_caps.supported_qpts |= 1100 1 << IB_QPT_RAW_PACKET; 1101 if (MLX5_CAP_QOS(mdev, packet_pacing_burst_bound) && 1102 MLX5_CAP_QOS(mdev, packet_pacing_typical_size)) 1103 resp.packet_pacing_caps.cap_flags |= 1104 MLX5_IB_PP_SUPPORT_BURST; 1105 } 1106 resp.response_length += sizeof(resp.packet_pacing_caps); 1107 } 1108 1109 if (offsetofend(typeof(resp), mlx5_ib_support_multi_pkt_send_wqes) <= 1110 uhw_outlen) { 1111 if (MLX5_CAP_ETH(mdev, multi_pkt_send_wqe)) 1112 resp.mlx5_ib_support_multi_pkt_send_wqes = 1113 MLX5_IB_ALLOW_MPW; 1114 1115 if (MLX5_CAP_ETH(mdev, enhanced_multi_pkt_send_wqe)) 1116 resp.mlx5_ib_support_multi_pkt_send_wqes |= 1117 MLX5_IB_SUPPORT_EMPW; 1118 1119 resp.response_length += 1120 sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes); 1121 } 1122 1123 if (offsetofend(typeof(resp), flags) <= uhw_outlen) { 1124 resp.response_length += sizeof(resp.flags); 1125 1126 if (MLX5_CAP_GEN(mdev, cqe_compression_128)) 1127 resp.flags |= 1128 MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP; 1129 1130 if (MLX5_CAP_GEN(mdev, cqe_128_always)) 1131 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_PAD; 1132 if (MLX5_CAP_GEN(mdev, qp_packet_based)) 1133 resp.flags |= 1134 MLX5_IB_QUERY_DEV_RESP_PACKET_BASED_CREDIT_MODE; 1135 1136 resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_SCAT2CQE_DCT; 1137 } 1138 1139 if (offsetofend(typeof(resp), sw_parsing_caps) <= uhw_outlen) { 1140 resp.response_length += sizeof(resp.sw_parsing_caps); 1141 if (MLX5_CAP_ETH(mdev, swp)) { 1142 resp.sw_parsing_caps.sw_parsing_offloads |= 1143 MLX5_IB_SW_PARSING; 1144 1145 if (MLX5_CAP_ETH(mdev, swp_csum)) 1146 resp.sw_parsing_caps.sw_parsing_offloads |= 1147 MLX5_IB_SW_PARSING_CSUM; 1148 1149 if (MLX5_CAP_ETH(mdev, swp_lso)) 1150 resp.sw_parsing_caps.sw_parsing_offloads |= 1151 MLX5_IB_SW_PARSING_LSO; 1152 1153 if (resp.sw_parsing_caps.sw_parsing_offloads) 1154 resp.sw_parsing_caps.supported_qpts = 1155 BIT(IB_QPT_RAW_PACKET); 1156 } 1157 } 1158 1159 if (offsetofend(typeof(resp), striding_rq_caps) <= uhw_outlen && 1160 raw_support) { 1161 resp.response_length += sizeof(resp.striding_rq_caps); 1162 if (MLX5_CAP_GEN(mdev, striding_rq)) { 1163 resp.striding_rq_caps.min_single_stride_log_num_of_bytes = 1164 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES; 1165 resp.striding_rq_caps.max_single_stride_log_num_of_bytes = 1166 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES; 1167 if (MLX5_CAP_GEN(dev->mdev, ext_stride_num_range)) 1168 resp.striding_rq_caps 1169 .min_single_wqe_log_num_of_strides = 1170 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES; 1171 else 1172 resp.striding_rq_caps 1173 .min_single_wqe_log_num_of_strides = 1174 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES; 1175 resp.striding_rq_caps.max_single_wqe_log_num_of_strides = 1176 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES; 1177 resp.striding_rq_caps.supported_qpts = 1178 BIT(IB_QPT_RAW_PACKET); 1179 } 1180 } 1181 1182 if (offsetofend(typeof(resp), tunnel_offloads_caps) <= uhw_outlen) { 1183 resp.response_length += sizeof(resp.tunnel_offloads_caps); 1184 if (MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan)) 1185 resp.tunnel_offloads_caps |= 1186 MLX5_IB_TUNNELED_OFFLOADS_VXLAN; 1187 if (MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx)) 1188 resp.tunnel_offloads_caps |= 1189 MLX5_IB_TUNNELED_OFFLOADS_GENEVE; 1190 if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre)) 1191 resp.tunnel_offloads_caps |= 1192 MLX5_IB_TUNNELED_OFFLOADS_GRE; 1193 if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_gre)) 1194 resp.tunnel_offloads_caps |= 1195 MLX5_IB_TUNNELED_OFFLOADS_MPLS_GRE; 1196 if (MLX5_CAP_ETH(mdev, tunnel_stateless_mpls_over_udp)) 1197 resp.tunnel_offloads_caps |= 1198 MLX5_IB_TUNNELED_OFFLOADS_MPLS_UDP; 1199 } 1200 1201 if (uhw_outlen) { 1202 err = ib_copy_to_udata(uhw, &resp, resp.response_length); 1203 1204 if (err) 1205 return err; 1206 } 1207 1208 return 0; 1209 } 1210 1211 enum mlx5_ib_width { 1212 MLX5_IB_WIDTH_1X = 1 << 0, 1213 MLX5_IB_WIDTH_2X = 1 << 1, 1214 MLX5_IB_WIDTH_4X = 1 << 2, 1215 MLX5_IB_WIDTH_8X = 1 << 3, 1216 MLX5_IB_WIDTH_12X = 1 << 4 1217 }; 1218 1219 static void translate_active_width(struct ib_device *ibdev, u8 active_width, 1220 u8 *ib_width) 1221 { 1222 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1223 1224 if (active_width & MLX5_IB_WIDTH_1X) 1225 *ib_width = IB_WIDTH_1X; 1226 else if (active_width & MLX5_IB_WIDTH_2X) 1227 *ib_width = IB_WIDTH_2X; 1228 else if (active_width & MLX5_IB_WIDTH_4X) 1229 *ib_width = IB_WIDTH_4X; 1230 else if (active_width & MLX5_IB_WIDTH_8X) 1231 *ib_width = IB_WIDTH_8X; 1232 else if (active_width & MLX5_IB_WIDTH_12X) 1233 *ib_width = IB_WIDTH_12X; 1234 else { 1235 mlx5_ib_dbg(dev, "Invalid active_width %d, setting width to default value: 4x\n", 1236 (int)active_width); 1237 *ib_width = IB_WIDTH_4X; 1238 } 1239 1240 return; 1241 } 1242 1243 static int mlx5_mtu_to_ib_mtu(int mtu) 1244 { 1245 switch (mtu) { 1246 case 256: return 1; 1247 case 512: return 2; 1248 case 1024: return 3; 1249 case 2048: return 4; 1250 case 4096: return 5; 1251 default: 1252 pr_warn("invalid mtu\n"); 1253 return -1; 1254 } 1255 } 1256 1257 enum ib_max_vl_num { 1258 __IB_MAX_VL_0 = 1, 1259 __IB_MAX_VL_0_1 = 2, 1260 __IB_MAX_VL_0_3 = 3, 1261 __IB_MAX_VL_0_7 = 4, 1262 __IB_MAX_VL_0_14 = 5, 1263 }; 1264 1265 enum mlx5_vl_hw_cap { 1266 MLX5_VL_HW_0 = 1, 1267 MLX5_VL_HW_0_1 = 2, 1268 MLX5_VL_HW_0_2 = 3, 1269 MLX5_VL_HW_0_3 = 4, 1270 MLX5_VL_HW_0_4 = 5, 1271 MLX5_VL_HW_0_5 = 6, 1272 MLX5_VL_HW_0_6 = 7, 1273 MLX5_VL_HW_0_7 = 8, 1274 MLX5_VL_HW_0_14 = 15 1275 }; 1276 1277 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap, 1278 u8 *max_vl_num) 1279 { 1280 switch (vl_hw_cap) { 1281 case MLX5_VL_HW_0: 1282 *max_vl_num = __IB_MAX_VL_0; 1283 break; 1284 case MLX5_VL_HW_0_1: 1285 *max_vl_num = __IB_MAX_VL_0_1; 1286 break; 1287 case MLX5_VL_HW_0_3: 1288 *max_vl_num = __IB_MAX_VL_0_3; 1289 break; 1290 case MLX5_VL_HW_0_7: 1291 *max_vl_num = __IB_MAX_VL_0_7; 1292 break; 1293 case MLX5_VL_HW_0_14: 1294 *max_vl_num = __IB_MAX_VL_0_14; 1295 break; 1296 1297 default: 1298 return -EINVAL; 1299 } 1300 1301 return 0; 1302 } 1303 1304 static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port, 1305 struct ib_port_attr *props) 1306 { 1307 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1308 struct mlx5_core_dev *mdev = dev->mdev; 1309 struct mlx5_hca_vport_context *rep; 1310 u16 max_mtu; 1311 u16 oper_mtu; 1312 int err; 1313 u8 ib_link_width_oper; 1314 u8 vl_hw_cap; 1315 1316 rep = kzalloc(sizeof(*rep), GFP_KERNEL); 1317 if (!rep) { 1318 err = -ENOMEM; 1319 goto out; 1320 } 1321 1322 /* props being zeroed by the caller, avoid zeroing it here */ 1323 1324 err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep); 1325 if (err) 1326 goto out; 1327 1328 props->lid = rep->lid; 1329 props->lmc = rep->lmc; 1330 props->sm_lid = rep->sm_lid; 1331 props->sm_sl = rep->sm_sl; 1332 props->state = rep->vport_state; 1333 props->phys_state = rep->port_physical_state; 1334 props->port_cap_flags = rep->cap_mask1; 1335 props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size)); 1336 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); 1337 props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size)); 1338 props->bad_pkey_cntr = rep->pkey_violation_counter; 1339 props->qkey_viol_cntr = rep->qkey_violation_counter; 1340 props->subnet_timeout = rep->subnet_timeout; 1341 props->init_type_reply = rep->init_type_reply; 1342 1343 if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) 1344 props->port_cap_flags2 = rep->cap_mask2; 1345 1346 err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port); 1347 if (err) 1348 goto out; 1349 1350 translate_active_width(ibdev, ib_link_width_oper, &props->active_width); 1351 1352 err = mlx5_query_port_ib_proto_oper(mdev, &props->active_speed, port); 1353 if (err) 1354 goto out; 1355 1356 mlx5_query_port_max_mtu(mdev, &max_mtu, port); 1357 1358 props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu); 1359 1360 mlx5_query_port_oper_mtu(mdev, &oper_mtu, port); 1361 1362 props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu); 1363 1364 err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port); 1365 if (err) 1366 goto out; 1367 1368 err = translate_max_vl_num(ibdev, vl_hw_cap, 1369 &props->max_vl_num); 1370 out: 1371 kfree(rep); 1372 return err; 1373 } 1374 1375 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port, 1376 struct ib_port_attr *props) 1377 { 1378 unsigned int count; 1379 int ret; 1380 1381 switch (mlx5_get_vport_access_method(ibdev)) { 1382 case MLX5_VPORT_ACCESS_METHOD_MAD: 1383 ret = mlx5_query_mad_ifc_port(ibdev, port, props); 1384 break; 1385 1386 case MLX5_VPORT_ACCESS_METHOD_HCA: 1387 ret = mlx5_query_hca_port(ibdev, port, props); 1388 break; 1389 1390 case MLX5_VPORT_ACCESS_METHOD_NIC: 1391 ret = mlx5_query_port_roce(ibdev, port, props); 1392 break; 1393 1394 default: 1395 ret = -EINVAL; 1396 } 1397 1398 if (!ret && props) { 1399 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1400 struct mlx5_core_dev *mdev; 1401 bool put_mdev = true; 1402 1403 mdev = mlx5_ib_get_native_port_mdev(dev, port, NULL); 1404 if (!mdev) { 1405 /* If the port isn't affiliated yet query the master. 1406 * The master and slave will have the same values. 1407 */ 1408 mdev = dev->mdev; 1409 port = 1; 1410 put_mdev = false; 1411 } 1412 count = mlx5_core_reserved_gids_count(mdev); 1413 if (put_mdev) 1414 mlx5_ib_put_native_port_mdev(dev, port); 1415 props->gid_tbl_len -= count; 1416 } 1417 return ret; 1418 } 1419 1420 static int mlx5_ib_rep_query_port(struct ib_device *ibdev, u8 port, 1421 struct ib_port_attr *props) 1422 { 1423 int ret; 1424 1425 /* Only link layer == ethernet is valid for representors 1426 * and we always use port 1 1427 */ 1428 ret = mlx5_query_port_roce(ibdev, port, props); 1429 if (ret || !props) 1430 return ret; 1431 1432 /* We don't support GIDS */ 1433 props->gid_tbl_len = 0; 1434 1435 return ret; 1436 } 1437 1438 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 1439 union ib_gid *gid) 1440 { 1441 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1442 struct mlx5_core_dev *mdev = dev->mdev; 1443 1444 switch (mlx5_get_vport_access_method(ibdev)) { 1445 case MLX5_VPORT_ACCESS_METHOD_MAD: 1446 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid); 1447 1448 case MLX5_VPORT_ACCESS_METHOD_HCA: 1449 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid); 1450 1451 default: 1452 return -EINVAL; 1453 } 1454 1455 } 1456 1457 static int mlx5_query_hca_nic_pkey(struct ib_device *ibdev, u8 port, 1458 u16 index, u16 *pkey) 1459 { 1460 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1461 struct mlx5_core_dev *mdev; 1462 bool put_mdev = true; 1463 u8 mdev_port_num; 1464 int err; 1465 1466 mdev = mlx5_ib_get_native_port_mdev(dev, port, &mdev_port_num); 1467 if (!mdev) { 1468 /* The port isn't affiliated yet, get the PKey from the master 1469 * port. For RoCE the PKey tables will be the same. 1470 */ 1471 put_mdev = false; 1472 mdev = dev->mdev; 1473 mdev_port_num = 1; 1474 } 1475 1476 err = mlx5_query_hca_vport_pkey(mdev, 0, mdev_port_num, 0, 1477 index, pkey); 1478 if (put_mdev) 1479 mlx5_ib_put_native_port_mdev(dev, port); 1480 1481 return err; 1482 } 1483 1484 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 1485 u16 *pkey) 1486 { 1487 switch (mlx5_get_vport_access_method(ibdev)) { 1488 case MLX5_VPORT_ACCESS_METHOD_MAD: 1489 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey); 1490 1491 case MLX5_VPORT_ACCESS_METHOD_HCA: 1492 case MLX5_VPORT_ACCESS_METHOD_NIC: 1493 return mlx5_query_hca_nic_pkey(ibdev, port, index, pkey); 1494 default: 1495 return -EINVAL; 1496 } 1497 } 1498 1499 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask, 1500 struct ib_device_modify *props) 1501 { 1502 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1503 struct mlx5_reg_node_desc in; 1504 struct mlx5_reg_node_desc out; 1505 int err; 1506 1507 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 1508 return -EOPNOTSUPP; 1509 1510 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 1511 return 0; 1512 1513 /* 1514 * If possible, pass node desc to FW, so it can generate 1515 * a 144 trap. If cmd fails, just ignore. 1516 */ 1517 memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1518 err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out, 1519 sizeof(out), MLX5_REG_NODE_DESC, 0, 1); 1520 if (err) 1521 return err; 1522 1523 memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); 1524 1525 return err; 1526 } 1527 1528 static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u8 port_num, u32 mask, 1529 u32 value) 1530 { 1531 struct mlx5_hca_vport_context ctx = {}; 1532 struct mlx5_core_dev *mdev; 1533 u8 mdev_port_num; 1534 int err; 1535 1536 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num); 1537 if (!mdev) 1538 return -ENODEV; 1539 1540 err = mlx5_query_hca_vport_context(mdev, 0, mdev_port_num, 0, &ctx); 1541 if (err) 1542 goto out; 1543 1544 if (~ctx.cap_mask1_perm & mask) { 1545 mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n", 1546 mask, ctx.cap_mask1_perm); 1547 err = -EINVAL; 1548 goto out; 1549 } 1550 1551 ctx.cap_mask1 = value; 1552 ctx.cap_mask1_perm = mask; 1553 err = mlx5_core_modify_hca_vport_context(mdev, 0, mdev_port_num, 1554 0, &ctx); 1555 1556 out: 1557 mlx5_ib_put_native_port_mdev(dev, port_num); 1558 1559 return err; 1560 } 1561 1562 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 1563 struct ib_port_modify *props) 1564 { 1565 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1566 struct ib_port_attr attr; 1567 u32 tmp; 1568 int err; 1569 u32 change_mask; 1570 u32 value; 1571 bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) == 1572 IB_LINK_LAYER_INFINIBAND); 1573 1574 /* CM layer calls ib_modify_port() regardless of the link layer. For 1575 * Ethernet ports, qkey violation and Port capabilities are meaningless. 1576 */ 1577 if (!is_ib) 1578 return 0; 1579 1580 if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) { 1581 change_mask = props->clr_port_cap_mask | props->set_port_cap_mask; 1582 value = ~props->clr_port_cap_mask | props->set_port_cap_mask; 1583 return set_port_caps_atomic(dev, port, change_mask, value); 1584 } 1585 1586 mutex_lock(&dev->cap_mask_mutex); 1587 1588 err = ib_query_port(ibdev, port, &attr); 1589 if (err) 1590 goto out; 1591 1592 tmp = (attr.port_cap_flags | props->set_port_cap_mask) & 1593 ~props->clr_port_cap_mask; 1594 1595 err = mlx5_set_port_caps(dev->mdev, port, tmp); 1596 1597 out: 1598 mutex_unlock(&dev->cap_mask_mutex); 1599 return err; 1600 } 1601 1602 static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps) 1603 { 1604 mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n", 1605 caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n"); 1606 } 1607 1608 static u16 calc_dynamic_bfregs(int uars_per_sys_page) 1609 { 1610 /* Large page with non 4k uar support might limit the dynamic size */ 1611 if (uars_per_sys_page == 1 && PAGE_SIZE > 4096) 1612 return MLX5_MIN_DYN_BFREGS; 1613 1614 return MLX5_MAX_DYN_BFREGS; 1615 } 1616 1617 static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k, 1618 struct mlx5_ib_alloc_ucontext_req_v2 *req, 1619 struct mlx5_bfreg_info *bfregi) 1620 { 1621 int uars_per_sys_page; 1622 int bfregs_per_sys_page; 1623 int ref_bfregs = req->total_num_bfregs; 1624 1625 if (req->total_num_bfregs == 0) 1626 return -EINVAL; 1627 1628 BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE); 1629 BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE); 1630 1631 if (req->total_num_bfregs > MLX5_MAX_BFREGS) 1632 return -ENOMEM; 1633 1634 uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k); 1635 bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR; 1636 /* This holds the required static allocation asked by the user */ 1637 req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page); 1638 if (req->num_low_latency_bfregs > req->total_num_bfregs - 1) 1639 return -EINVAL; 1640 1641 bfregi->num_static_sys_pages = req->total_num_bfregs / bfregs_per_sys_page; 1642 bfregi->num_dyn_bfregs = ALIGN(calc_dynamic_bfregs(uars_per_sys_page), bfregs_per_sys_page); 1643 bfregi->total_num_bfregs = req->total_num_bfregs + bfregi->num_dyn_bfregs; 1644 bfregi->num_sys_pages = bfregi->total_num_bfregs / bfregs_per_sys_page; 1645 1646 mlx5_ib_dbg(dev, "uar_4k: fw support %s, lib support %s, user requested %d bfregs, allocated %d, total bfregs %d, using %d sys pages\n", 1647 MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no", 1648 lib_uar_4k ? "yes" : "no", ref_bfregs, 1649 req->total_num_bfregs, bfregi->total_num_bfregs, 1650 bfregi->num_sys_pages); 1651 1652 return 0; 1653 } 1654 1655 static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context) 1656 { 1657 struct mlx5_bfreg_info *bfregi; 1658 int err; 1659 int i; 1660 1661 bfregi = &context->bfregi; 1662 for (i = 0; i < bfregi->num_static_sys_pages; i++) { 1663 err = mlx5_cmd_alloc_uar(dev->mdev, &bfregi->sys_pages[i]); 1664 if (err) 1665 goto error; 1666 1667 mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]); 1668 } 1669 1670 for (i = bfregi->num_static_sys_pages; i < bfregi->num_sys_pages; i++) 1671 bfregi->sys_pages[i] = MLX5_IB_INVALID_UAR_INDEX; 1672 1673 return 0; 1674 1675 error: 1676 for (--i; i >= 0; i--) 1677 if (mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i])) 1678 mlx5_ib_warn(dev, "failed to free uar %d\n", i); 1679 1680 return err; 1681 } 1682 1683 static void deallocate_uars(struct mlx5_ib_dev *dev, 1684 struct mlx5_ib_ucontext *context) 1685 { 1686 struct mlx5_bfreg_info *bfregi; 1687 int i; 1688 1689 bfregi = &context->bfregi; 1690 for (i = 0; i < bfregi->num_sys_pages; i++) 1691 if (i < bfregi->num_static_sys_pages || 1692 bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX) 1693 mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]); 1694 } 1695 1696 int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev, bool td, bool qp) 1697 { 1698 int err = 0; 1699 1700 mutex_lock(&dev->lb.mutex); 1701 if (td) 1702 dev->lb.user_td++; 1703 if (qp) 1704 dev->lb.qps++; 1705 1706 if (dev->lb.user_td == 2 || 1707 dev->lb.qps == 1) { 1708 if (!dev->lb.enabled) { 1709 err = mlx5_nic_vport_update_local_lb(dev->mdev, true); 1710 dev->lb.enabled = true; 1711 } 1712 } 1713 1714 mutex_unlock(&dev->lb.mutex); 1715 1716 return err; 1717 } 1718 1719 void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev, bool td, bool qp) 1720 { 1721 mutex_lock(&dev->lb.mutex); 1722 if (td) 1723 dev->lb.user_td--; 1724 if (qp) 1725 dev->lb.qps--; 1726 1727 if (dev->lb.user_td == 1 && 1728 dev->lb.qps == 0) { 1729 if (dev->lb.enabled) { 1730 mlx5_nic_vport_update_local_lb(dev->mdev, false); 1731 dev->lb.enabled = false; 1732 } 1733 } 1734 1735 mutex_unlock(&dev->lb.mutex); 1736 } 1737 1738 static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn, 1739 u16 uid) 1740 { 1741 int err; 1742 1743 if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) 1744 return 0; 1745 1746 err = mlx5_cmd_alloc_transport_domain(dev->mdev, tdn, uid); 1747 if (err) 1748 return err; 1749 1750 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) || 1751 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) && 1752 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 1753 return err; 1754 1755 return mlx5_ib_enable_lb(dev, true, false); 1756 } 1757 1758 static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn, 1759 u16 uid) 1760 { 1761 if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) 1762 return; 1763 1764 mlx5_cmd_dealloc_transport_domain(dev->mdev, tdn, uid); 1765 1766 if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) || 1767 (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) && 1768 !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 1769 return; 1770 1771 mlx5_ib_disable_lb(dev, true, false); 1772 } 1773 1774 static int mlx5_ib_alloc_ucontext(struct ib_ucontext *uctx, 1775 struct ib_udata *udata) 1776 { 1777 struct ib_device *ibdev = uctx->device; 1778 struct mlx5_ib_dev *dev = to_mdev(ibdev); 1779 struct mlx5_ib_alloc_ucontext_req_v2 req = {}; 1780 struct mlx5_ib_alloc_ucontext_resp resp = {}; 1781 struct mlx5_core_dev *mdev = dev->mdev; 1782 struct mlx5_ib_ucontext *context = to_mucontext(uctx); 1783 struct mlx5_bfreg_info *bfregi; 1784 int ver; 1785 int err; 1786 size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2, 1787 max_cqe_version); 1788 u32 dump_fill_mkey; 1789 bool lib_uar_4k; 1790 bool lib_uar_dyn; 1791 1792 if (!dev->ib_active) 1793 return -EAGAIN; 1794 1795 if (udata->inlen == sizeof(struct mlx5_ib_alloc_ucontext_req)) 1796 ver = 0; 1797 else if (udata->inlen >= min_req_v2) 1798 ver = 2; 1799 else 1800 return -EINVAL; 1801 1802 err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req))); 1803 if (err) 1804 return err; 1805 1806 if (req.flags & ~MLX5_IB_ALLOC_UCTX_DEVX) 1807 return -EOPNOTSUPP; 1808 1809 if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2) 1810 return -EOPNOTSUPP; 1811 1812 req.total_num_bfregs = ALIGN(req.total_num_bfregs, 1813 MLX5_NON_FP_BFREGS_PER_UAR); 1814 if (req.num_low_latency_bfregs > req.total_num_bfregs - 1) 1815 return -EINVAL; 1816 1817 resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp); 1818 if (dev->wc_support) 1819 resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size); 1820 resp.cache_line_size = cache_line_size(); 1821 resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq); 1822 resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq); 1823 resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); 1824 resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); 1825 resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz); 1826 resp.cqe_version = min_t(__u8, 1827 (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version), 1828 req.max_cqe_version); 1829 resp.log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 1830 MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT; 1831 resp.num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 1832 MLX5_CAP_GEN(dev->mdev, num_of_uars_per_page) : 1; 1833 resp.response_length = min(offsetof(typeof(resp), response_length) + 1834 sizeof(resp.response_length), udata->outlen); 1835 1836 if (mlx5_accel_ipsec_device_caps(dev->mdev) & MLX5_ACCEL_IPSEC_CAP_DEVICE) { 1837 if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_EGRESS)) 1838 resp.flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM; 1839 if (mlx5_accel_ipsec_device_caps(dev->mdev) & MLX5_ACCEL_IPSEC_CAP_REQUIRED_METADATA) 1840 resp.flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_REQ_METADATA; 1841 if (MLX5_CAP_FLOWTABLE(dev->mdev, flow_table_properties_nic_receive.ft_field_support.outer_esp_spi)) 1842 resp.flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_SPI_STEERING; 1843 if (mlx5_accel_ipsec_device_caps(dev->mdev) & MLX5_ACCEL_IPSEC_CAP_TX_IV_IS_ESN) 1844 resp.flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_TX_IV_IS_ESN; 1845 /* MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_FULL_OFFLOAD is currently always 0 */ 1846 } 1847 1848 lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR; 1849 lib_uar_dyn = req.lib_caps & MLX5_LIB_CAP_DYN_UAR; 1850 bfregi = &context->bfregi; 1851 1852 if (lib_uar_dyn) { 1853 bfregi->lib_uar_dyn = lib_uar_dyn; 1854 goto uar_done; 1855 } 1856 1857 /* updates req->total_num_bfregs */ 1858 err = calc_total_bfregs(dev, lib_uar_4k, &req, bfregi); 1859 if (err) 1860 goto out_ctx; 1861 1862 mutex_init(&bfregi->lock); 1863 bfregi->lib_uar_4k = lib_uar_4k; 1864 bfregi->count = kcalloc(bfregi->total_num_bfregs, sizeof(*bfregi->count), 1865 GFP_KERNEL); 1866 if (!bfregi->count) { 1867 err = -ENOMEM; 1868 goto out_ctx; 1869 } 1870 1871 bfregi->sys_pages = kcalloc(bfregi->num_sys_pages, 1872 sizeof(*bfregi->sys_pages), 1873 GFP_KERNEL); 1874 if (!bfregi->sys_pages) { 1875 err = -ENOMEM; 1876 goto out_count; 1877 } 1878 1879 err = allocate_uars(dev, context); 1880 if (err) 1881 goto out_sys_pages; 1882 1883 uar_done: 1884 if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) { 1885 err = mlx5_ib_devx_create(dev, true); 1886 if (err < 0) 1887 goto out_uars; 1888 context->devx_uid = err; 1889 } 1890 1891 err = mlx5_ib_alloc_transport_domain(dev, &context->tdn, 1892 context->devx_uid); 1893 if (err) 1894 goto out_devx; 1895 1896 if (MLX5_CAP_GEN(dev->mdev, dump_fill_mkey)) { 1897 err = mlx5_cmd_dump_fill_mkey(dev->mdev, &dump_fill_mkey); 1898 if (err) 1899 goto out_mdev; 1900 } 1901 1902 INIT_LIST_HEAD(&context->db_page_list); 1903 mutex_init(&context->db_page_mutex); 1904 1905 resp.tot_bfregs = lib_uar_dyn ? 0 : req.total_num_bfregs; 1906 resp.num_ports = dev->num_ports; 1907 1908 if (offsetofend(typeof(resp), cqe_version) <= udata->outlen) 1909 resp.response_length += sizeof(resp.cqe_version); 1910 1911 if (offsetofend(typeof(resp), cmds_supp_uhw) <= udata->outlen) { 1912 resp.cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE | 1913 MLX5_USER_CMDS_SUPP_UHW_CREATE_AH; 1914 resp.response_length += sizeof(resp.cmds_supp_uhw); 1915 } 1916 1917 if (offsetofend(typeof(resp), eth_min_inline) <= udata->outlen) { 1918 if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) { 1919 mlx5_query_min_inline(dev->mdev, &resp.eth_min_inline); 1920 resp.eth_min_inline++; 1921 } 1922 resp.response_length += sizeof(resp.eth_min_inline); 1923 } 1924 1925 if (offsetofend(typeof(resp), clock_info_versions) <= udata->outlen) { 1926 if (mdev->clock_info) 1927 resp.clock_info_versions = BIT(MLX5_IB_CLOCK_INFO_V1); 1928 resp.response_length += sizeof(resp.clock_info_versions); 1929 } 1930 1931 /* 1932 * We don't want to expose information from the PCI bar that is located 1933 * after 4096 bytes, so if the arch only supports larger pages, let's 1934 * pretend we don't support reading the HCA's core clock. This is also 1935 * forced by mmap function. 1936 */ 1937 if (offsetofend(typeof(resp), hca_core_clock_offset) <= udata->outlen) { 1938 if (PAGE_SIZE <= 4096) { 1939 resp.comp_mask |= 1940 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET; 1941 resp.hca_core_clock_offset = 1942 offsetof(struct mlx5_init_seg, internal_timer_h) % PAGE_SIZE; 1943 } 1944 resp.response_length += sizeof(resp.hca_core_clock_offset); 1945 } 1946 1947 if (offsetofend(typeof(resp), log_uar_size) <= udata->outlen) 1948 resp.response_length += sizeof(resp.log_uar_size); 1949 1950 if (offsetofend(typeof(resp), num_uars_per_page) <= udata->outlen) 1951 resp.response_length += sizeof(resp.num_uars_per_page); 1952 1953 if (offsetofend(typeof(resp), num_dyn_bfregs) <= udata->outlen) { 1954 resp.num_dyn_bfregs = bfregi->num_dyn_bfregs; 1955 resp.response_length += sizeof(resp.num_dyn_bfregs); 1956 } 1957 1958 if (offsetofend(typeof(resp), dump_fill_mkey) <= udata->outlen) { 1959 if (MLX5_CAP_GEN(dev->mdev, dump_fill_mkey)) { 1960 resp.dump_fill_mkey = dump_fill_mkey; 1961 resp.comp_mask |= 1962 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_DUMP_FILL_MKEY; 1963 } 1964 resp.response_length += sizeof(resp.dump_fill_mkey); 1965 } 1966 1967 err = ib_copy_to_udata(udata, &resp, resp.response_length); 1968 if (err) 1969 goto out_mdev; 1970 1971 bfregi->ver = ver; 1972 bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs; 1973 context->cqe_version = resp.cqe_version; 1974 context->lib_caps = req.lib_caps; 1975 print_lib_caps(dev, context->lib_caps); 1976 1977 if (dev->lag_active) { 1978 u8 port = mlx5_core_native_port_num(dev->mdev) - 1; 1979 1980 atomic_set(&context->tx_port_affinity, 1981 atomic_add_return( 1982 1, &dev->port[port].roce.tx_port_affinity)); 1983 } 1984 1985 return 0; 1986 1987 out_mdev: 1988 mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid); 1989 out_devx: 1990 if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) 1991 mlx5_ib_devx_destroy(dev, context->devx_uid); 1992 1993 out_uars: 1994 deallocate_uars(dev, context); 1995 1996 out_sys_pages: 1997 kfree(bfregi->sys_pages); 1998 1999 out_count: 2000 kfree(bfregi->count); 2001 2002 out_ctx: 2003 return err; 2004 } 2005 2006 static void mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 2007 { 2008 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 2009 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 2010 struct mlx5_bfreg_info *bfregi; 2011 2012 bfregi = &context->bfregi; 2013 mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid); 2014 2015 if (context->devx_uid) 2016 mlx5_ib_devx_destroy(dev, context->devx_uid); 2017 2018 deallocate_uars(dev, context); 2019 kfree(bfregi->sys_pages); 2020 kfree(bfregi->count); 2021 } 2022 2023 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, 2024 int uar_idx) 2025 { 2026 int fw_uars_per_page; 2027 2028 fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1; 2029 2030 return (dev->mdev->bar_addr >> PAGE_SHIFT) + uar_idx / fw_uars_per_page; 2031 } 2032 2033 static u64 uar_index2paddress(struct mlx5_ib_dev *dev, 2034 int uar_idx) 2035 { 2036 unsigned int fw_uars_per_page; 2037 2038 fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? 2039 MLX5_UARS_IN_PAGE : 1; 2040 2041 return (dev->mdev->bar_addr + (uar_idx / fw_uars_per_page) * PAGE_SIZE); 2042 } 2043 2044 static int get_command(unsigned long offset) 2045 { 2046 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK; 2047 } 2048 2049 static int get_arg(unsigned long offset) 2050 { 2051 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1); 2052 } 2053 2054 static int get_index(unsigned long offset) 2055 { 2056 return get_arg(offset); 2057 } 2058 2059 /* Index resides in an extra byte to enable larger values than 255 */ 2060 static int get_extended_index(unsigned long offset) 2061 { 2062 return get_arg(offset) | ((offset >> 16) & 0xff) << 8; 2063 } 2064 2065 2066 static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) 2067 { 2068 } 2069 2070 static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd) 2071 { 2072 switch (cmd) { 2073 case MLX5_IB_MMAP_WC_PAGE: 2074 return "WC"; 2075 case MLX5_IB_MMAP_REGULAR_PAGE: 2076 return "best effort WC"; 2077 case MLX5_IB_MMAP_NC_PAGE: 2078 return "NC"; 2079 case MLX5_IB_MMAP_DEVICE_MEM: 2080 return "Device Memory"; 2081 default: 2082 return NULL; 2083 } 2084 } 2085 2086 static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev, 2087 struct vm_area_struct *vma, 2088 struct mlx5_ib_ucontext *context) 2089 { 2090 if ((vma->vm_end - vma->vm_start != PAGE_SIZE) || 2091 !(vma->vm_flags & VM_SHARED)) 2092 return -EINVAL; 2093 2094 if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1) 2095 return -EOPNOTSUPP; 2096 2097 if (vma->vm_flags & (VM_WRITE | VM_EXEC)) 2098 return -EPERM; 2099 vma->vm_flags &= ~VM_MAYWRITE; 2100 2101 if (!dev->mdev->clock_info) 2102 return -EOPNOTSUPP; 2103 2104 return vm_insert_page(vma, vma->vm_start, 2105 virt_to_page(dev->mdev->clock_info)); 2106 } 2107 2108 static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry) 2109 { 2110 struct mlx5_user_mmap_entry *mentry = to_mmmap(entry); 2111 struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device); 2112 struct mlx5_var_table *var_table = &dev->var_table; 2113 struct mlx5_ib_dm *mdm; 2114 2115 switch (mentry->mmap_flag) { 2116 case MLX5_IB_MMAP_TYPE_MEMIC: 2117 mdm = container_of(mentry, struct mlx5_ib_dm, mentry); 2118 mlx5_cmd_dealloc_memic(&dev->dm, mdm->dev_addr, 2119 mdm->size); 2120 kfree(mdm); 2121 break; 2122 case MLX5_IB_MMAP_TYPE_VAR: 2123 mutex_lock(&var_table->bitmap_lock); 2124 clear_bit(mentry->page_idx, var_table->bitmap); 2125 mutex_unlock(&var_table->bitmap_lock); 2126 kfree(mentry); 2127 break; 2128 case MLX5_IB_MMAP_TYPE_UAR_WC: 2129 case MLX5_IB_MMAP_TYPE_UAR_NC: 2130 mlx5_cmd_free_uar(dev->mdev, mentry->page_idx); 2131 kfree(mentry); 2132 break; 2133 default: 2134 WARN_ON(true); 2135 } 2136 } 2137 2138 static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, 2139 struct vm_area_struct *vma, 2140 struct mlx5_ib_ucontext *context) 2141 { 2142 struct mlx5_bfreg_info *bfregi = &context->bfregi; 2143 int err; 2144 unsigned long idx; 2145 phys_addr_t pfn; 2146 pgprot_t prot; 2147 u32 bfreg_dyn_idx = 0; 2148 u32 uar_index; 2149 int dyn_uar = (cmd == MLX5_IB_MMAP_ALLOC_WC); 2150 int max_valid_idx = dyn_uar ? bfregi->num_sys_pages : 2151 bfregi->num_static_sys_pages; 2152 2153 if (bfregi->lib_uar_dyn) 2154 return -EINVAL; 2155 2156 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 2157 return -EINVAL; 2158 2159 if (dyn_uar) 2160 idx = get_extended_index(vma->vm_pgoff) + bfregi->num_static_sys_pages; 2161 else 2162 idx = get_index(vma->vm_pgoff); 2163 2164 if (idx >= max_valid_idx) { 2165 mlx5_ib_warn(dev, "invalid uar index %lu, max=%d\n", 2166 idx, max_valid_idx); 2167 return -EINVAL; 2168 } 2169 2170 switch (cmd) { 2171 case MLX5_IB_MMAP_WC_PAGE: 2172 case MLX5_IB_MMAP_ALLOC_WC: 2173 case MLX5_IB_MMAP_REGULAR_PAGE: 2174 /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */ 2175 prot = pgprot_writecombine(vma->vm_page_prot); 2176 break; 2177 case MLX5_IB_MMAP_NC_PAGE: 2178 prot = pgprot_noncached(vma->vm_page_prot); 2179 break; 2180 default: 2181 return -EINVAL; 2182 } 2183 2184 if (dyn_uar) { 2185 int uars_per_page; 2186 2187 uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k); 2188 bfreg_dyn_idx = idx * (uars_per_page * MLX5_NON_FP_BFREGS_PER_UAR); 2189 if (bfreg_dyn_idx >= bfregi->total_num_bfregs) { 2190 mlx5_ib_warn(dev, "invalid bfreg_dyn_idx %u, max=%u\n", 2191 bfreg_dyn_idx, bfregi->total_num_bfregs); 2192 return -EINVAL; 2193 } 2194 2195 mutex_lock(&bfregi->lock); 2196 /* Fail if uar already allocated, first bfreg index of each 2197 * page holds its count. 2198 */ 2199 if (bfregi->count[bfreg_dyn_idx]) { 2200 mlx5_ib_warn(dev, "wrong offset, idx %lu is busy, bfregn=%u\n", idx, bfreg_dyn_idx); 2201 mutex_unlock(&bfregi->lock); 2202 return -EINVAL; 2203 } 2204 2205 bfregi->count[bfreg_dyn_idx]++; 2206 mutex_unlock(&bfregi->lock); 2207 2208 err = mlx5_cmd_alloc_uar(dev->mdev, &uar_index); 2209 if (err) { 2210 mlx5_ib_warn(dev, "UAR alloc failed\n"); 2211 goto free_bfreg; 2212 } 2213 } else { 2214 uar_index = bfregi->sys_pages[idx]; 2215 } 2216 2217 pfn = uar_index2pfn(dev, uar_index); 2218 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn); 2219 2220 err = rdma_user_mmap_io(&context->ibucontext, vma, pfn, PAGE_SIZE, 2221 prot, NULL); 2222 if (err) { 2223 mlx5_ib_err(dev, 2224 "rdma_user_mmap_io failed with error=%d, mmap_cmd=%s\n", 2225 err, mmap_cmd2str(cmd)); 2226 goto err; 2227 } 2228 2229 if (dyn_uar) 2230 bfregi->sys_pages[idx] = uar_index; 2231 return 0; 2232 2233 err: 2234 if (!dyn_uar) 2235 return err; 2236 2237 mlx5_cmd_free_uar(dev->mdev, idx); 2238 2239 free_bfreg: 2240 mlx5_ib_free_bfreg(dev, bfregi, bfreg_dyn_idx); 2241 2242 return err; 2243 } 2244 2245 static int add_dm_mmap_entry(struct ib_ucontext *context, 2246 struct mlx5_ib_dm *mdm, 2247 u64 address) 2248 { 2249 mdm->mentry.mmap_flag = MLX5_IB_MMAP_TYPE_MEMIC; 2250 mdm->mentry.address = address; 2251 return rdma_user_mmap_entry_insert_range( 2252 context, &mdm->mentry.rdma_entry, 2253 mdm->size, 2254 MLX5_IB_MMAP_DEVICE_MEM << 16, 2255 (MLX5_IB_MMAP_DEVICE_MEM << 16) + (1UL << 16) - 1); 2256 } 2257 2258 static unsigned long mlx5_vma_to_pgoff(struct vm_area_struct *vma) 2259 { 2260 unsigned long idx; 2261 u8 command; 2262 2263 command = get_command(vma->vm_pgoff); 2264 idx = get_extended_index(vma->vm_pgoff); 2265 2266 return (command << 16 | idx); 2267 } 2268 2269 static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev, 2270 struct vm_area_struct *vma, 2271 struct ib_ucontext *ucontext) 2272 { 2273 struct mlx5_user_mmap_entry *mentry; 2274 struct rdma_user_mmap_entry *entry; 2275 unsigned long pgoff; 2276 pgprot_t prot; 2277 phys_addr_t pfn; 2278 int ret; 2279 2280 pgoff = mlx5_vma_to_pgoff(vma); 2281 entry = rdma_user_mmap_entry_get_pgoff(ucontext, pgoff); 2282 if (!entry) 2283 return -EINVAL; 2284 2285 mentry = to_mmmap(entry); 2286 pfn = (mentry->address >> PAGE_SHIFT); 2287 if (mentry->mmap_flag == MLX5_IB_MMAP_TYPE_VAR || 2288 mentry->mmap_flag == MLX5_IB_MMAP_TYPE_UAR_NC) 2289 prot = pgprot_noncached(vma->vm_page_prot); 2290 else 2291 prot = pgprot_writecombine(vma->vm_page_prot); 2292 ret = rdma_user_mmap_io(ucontext, vma, pfn, 2293 entry->npages * PAGE_SIZE, 2294 prot, 2295 entry); 2296 rdma_user_mmap_entry_put(&mentry->rdma_entry); 2297 return ret; 2298 } 2299 2300 static u64 mlx5_entry_to_mmap_offset(struct mlx5_user_mmap_entry *entry) 2301 { 2302 u64 cmd = (entry->rdma_entry.start_pgoff >> 16) & 0xFFFF; 2303 u64 index = entry->rdma_entry.start_pgoff & 0xFFFF; 2304 2305 return (((index >> 8) << 16) | (cmd << MLX5_IB_MMAP_CMD_SHIFT) | 2306 (index & 0xFF)) << PAGE_SHIFT; 2307 } 2308 2309 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) 2310 { 2311 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); 2312 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); 2313 unsigned long command; 2314 phys_addr_t pfn; 2315 2316 command = get_command(vma->vm_pgoff); 2317 switch (command) { 2318 case MLX5_IB_MMAP_WC_PAGE: 2319 case MLX5_IB_MMAP_ALLOC_WC: 2320 if (!dev->wc_support) 2321 return -EPERM; 2322 fallthrough; 2323 case MLX5_IB_MMAP_NC_PAGE: 2324 case MLX5_IB_MMAP_REGULAR_PAGE: 2325 return uar_mmap(dev, command, vma, context); 2326 2327 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: 2328 return -ENOSYS; 2329 2330 case MLX5_IB_MMAP_CORE_CLOCK: 2331 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 2332 return -EINVAL; 2333 2334 if (vma->vm_flags & VM_WRITE) 2335 return -EPERM; 2336 vma->vm_flags &= ~VM_MAYWRITE; 2337 2338 /* Don't expose to user-space information it shouldn't have */ 2339 if (PAGE_SIZE > 4096) 2340 return -EOPNOTSUPP; 2341 2342 pfn = (dev->mdev->iseg_base + 2343 offsetof(struct mlx5_init_seg, internal_timer_h)) >> 2344 PAGE_SHIFT; 2345 return rdma_user_mmap_io(&context->ibucontext, vma, pfn, 2346 PAGE_SIZE, 2347 pgprot_noncached(vma->vm_page_prot), 2348 NULL); 2349 case MLX5_IB_MMAP_CLOCK_INFO: 2350 return mlx5_ib_mmap_clock_info_page(dev, vma, context); 2351 2352 default: 2353 return mlx5_ib_mmap_offset(dev, vma, ibcontext); 2354 } 2355 2356 return 0; 2357 } 2358 2359 static inline int check_dm_type_support(struct mlx5_ib_dev *dev, 2360 u32 type) 2361 { 2362 switch (type) { 2363 case MLX5_IB_UAPI_DM_TYPE_MEMIC: 2364 if (!MLX5_CAP_DEV_MEM(dev->mdev, memic)) 2365 return -EOPNOTSUPP; 2366 break; 2367 case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: 2368 case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: 2369 if (!capable(CAP_SYS_RAWIO) || 2370 !capable(CAP_NET_RAW)) 2371 return -EPERM; 2372 2373 if (!(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) || 2374 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, sw_owner))) 2375 return -EOPNOTSUPP; 2376 break; 2377 } 2378 2379 return 0; 2380 } 2381 2382 static int handle_alloc_dm_memic(struct ib_ucontext *ctx, 2383 struct mlx5_ib_dm *dm, 2384 struct ib_dm_alloc_attr *attr, 2385 struct uverbs_attr_bundle *attrs) 2386 { 2387 struct mlx5_dm *dm_db = &to_mdev(ctx->device)->dm; 2388 u64 start_offset; 2389 u16 page_idx; 2390 int err; 2391 u64 address; 2392 2393 dm->size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE); 2394 2395 err = mlx5_cmd_alloc_memic(dm_db, &dm->dev_addr, 2396 dm->size, attr->alignment); 2397 if (err) 2398 return err; 2399 2400 address = dm->dev_addr & PAGE_MASK; 2401 err = add_dm_mmap_entry(ctx, dm, address); 2402 if (err) 2403 goto err_dealloc; 2404 2405 page_idx = dm->mentry.rdma_entry.start_pgoff & 0xFFFF; 2406 err = uverbs_copy_to(attrs, 2407 MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, 2408 &page_idx, 2409 sizeof(page_idx)); 2410 if (err) 2411 goto err_copy; 2412 2413 start_offset = dm->dev_addr & ~PAGE_MASK; 2414 err = uverbs_copy_to(attrs, 2415 MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, 2416 &start_offset, sizeof(start_offset)); 2417 if (err) 2418 goto err_copy; 2419 2420 return 0; 2421 2422 err_copy: 2423 rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); 2424 err_dealloc: 2425 mlx5_cmd_dealloc_memic(dm_db, dm->dev_addr, dm->size); 2426 2427 return err; 2428 } 2429 2430 static int handle_alloc_dm_sw_icm(struct ib_ucontext *ctx, 2431 struct mlx5_ib_dm *dm, 2432 struct ib_dm_alloc_attr *attr, 2433 struct uverbs_attr_bundle *attrs, 2434 int type) 2435 { 2436 struct mlx5_core_dev *dev = to_mdev(ctx->device)->mdev; 2437 u64 act_size; 2438 int err; 2439 2440 /* Allocation size must a multiple of the basic block size 2441 * and a power of 2. 2442 */ 2443 act_size = round_up(attr->length, MLX5_SW_ICM_BLOCK_SIZE(dev)); 2444 act_size = roundup_pow_of_two(act_size); 2445 2446 dm->size = act_size; 2447 err = mlx5_dm_sw_icm_alloc(dev, type, act_size, attr->alignment, 2448 to_mucontext(ctx)->devx_uid, &dm->dev_addr, 2449 &dm->icm_dm.obj_id); 2450 if (err) 2451 return err; 2452 2453 err = uverbs_copy_to(attrs, 2454 MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, 2455 &dm->dev_addr, sizeof(dm->dev_addr)); 2456 if (err) 2457 mlx5_dm_sw_icm_dealloc(dev, type, dm->size, 2458 to_mucontext(ctx)->devx_uid, dm->dev_addr, 2459 dm->icm_dm.obj_id); 2460 2461 return err; 2462 } 2463 2464 struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, 2465 struct ib_ucontext *context, 2466 struct ib_dm_alloc_attr *attr, 2467 struct uverbs_attr_bundle *attrs) 2468 { 2469 struct mlx5_ib_dm *dm; 2470 enum mlx5_ib_uapi_dm_type type; 2471 int err; 2472 2473 err = uverbs_get_const_default(&type, attrs, 2474 MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE, 2475 MLX5_IB_UAPI_DM_TYPE_MEMIC); 2476 if (err) 2477 return ERR_PTR(err); 2478 2479 mlx5_ib_dbg(to_mdev(ibdev), "alloc_dm req: dm_type=%d user_length=0x%llx log_alignment=%d\n", 2480 type, attr->length, attr->alignment); 2481 2482 err = check_dm_type_support(to_mdev(ibdev), type); 2483 if (err) 2484 return ERR_PTR(err); 2485 2486 dm = kzalloc(sizeof(*dm), GFP_KERNEL); 2487 if (!dm) 2488 return ERR_PTR(-ENOMEM); 2489 2490 dm->type = type; 2491 2492 switch (type) { 2493 case MLX5_IB_UAPI_DM_TYPE_MEMIC: 2494 err = handle_alloc_dm_memic(context, dm, 2495 attr, 2496 attrs); 2497 break; 2498 case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: 2499 err = handle_alloc_dm_sw_icm(context, dm, 2500 attr, attrs, 2501 MLX5_SW_ICM_TYPE_STEERING); 2502 break; 2503 case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: 2504 err = handle_alloc_dm_sw_icm(context, dm, 2505 attr, attrs, 2506 MLX5_SW_ICM_TYPE_HEADER_MODIFY); 2507 break; 2508 default: 2509 err = -EOPNOTSUPP; 2510 } 2511 2512 if (err) 2513 goto err_free; 2514 2515 return &dm->ibdm; 2516 2517 err_free: 2518 kfree(dm); 2519 return ERR_PTR(err); 2520 } 2521 2522 int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs) 2523 { 2524 struct mlx5_ib_ucontext *ctx = rdma_udata_to_drv_context( 2525 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); 2526 struct mlx5_core_dev *dev = to_mdev(ibdm->device)->mdev; 2527 struct mlx5_ib_dm *dm = to_mdm(ibdm); 2528 int ret; 2529 2530 switch (dm->type) { 2531 case MLX5_IB_UAPI_DM_TYPE_MEMIC: 2532 rdma_user_mmap_entry_remove(&dm->mentry.rdma_entry); 2533 return 0; 2534 case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM: 2535 ret = mlx5_dm_sw_icm_dealloc(dev, MLX5_SW_ICM_TYPE_STEERING, 2536 dm->size, ctx->devx_uid, dm->dev_addr, 2537 dm->icm_dm.obj_id); 2538 if (ret) 2539 return ret; 2540 break; 2541 case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM: 2542 ret = mlx5_dm_sw_icm_dealloc(dev, MLX5_SW_ICM_TYPE_HEADER_MODIFY, 2543 dm->size, ctx->devx_uid, dm->dev_addr, 2544 dm->icm_dm.obj_id); 2545 if (ret) 2546 return ret; 2547 break; 2548 default: 2549 return -EOPNOTSUPP; 2550 } 2551 2552 kfree(dm); 2553 2554 return 0; 2555 } 2556 2557 static int mlx5_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 2558 { 2559 struct mlx5_ib_pd *pd = to_mpd(ibpd); 2560 struct ib_device *ibdev = ibpd->device; 2561 struct mlx5_ib_alloc_pd_resp resp; 2562 int err; 2563 u32 out[MLX5_ST_SZ_DW(alloc_pd_out)] = {}; 2564 u32 in[MLX5_ST_SZ_DW(alloc_pd_in)] = {}; 2565 u16 uid = 0; 2566 struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context( 2567 udata, struct mlx5_ib_ucontext, ibucontext); 2568 2569 uid = context ? context->devx_uid : 0; 2570 MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD); 2571 MLX5_SET(alloc_pd_in, in, uid, uid); 2572 err = mlx5_cmd_exec(to_mdev(ibdev)->mdev, in, sizeof(in), 2573 out, sizeof(out)); 2574 if (err) 2575 return err; 2576 2577 pd->pdn = MLX5_GET(alloc_pd_out, out, pd); 2578 pd->uid = uid; 2579 if (udata) { 2580 resp.pdn = pd->pdn; 2581 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { 2582 mlx5_cmd_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn, uid); 2583 return -EFAULT; 2584 } 2585 } 2586 2587 return 0; 2588 } 2589 2590 static void mlx5_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 2591 { 2592 struct mlx5_ib_dev *mdev = to_mdev(pd->device); 2593 struct mlx5_ib_pd *mpd = to_mpd(pd); 2594 2595 mlx5_cmd_dealloc_pd(mdev->mdev, mpd->pdn, mpd->uid); 2596 } 2597 2598 enum { 2599 MATCH_CRITERIA_ENABLE_OUTER_BIT, 2600 MATCH_CRITERIA_ENABLE_MISC_BIT, 2601 MATCH_CRITERIA_ENABLE_INNER_BIT, 2602 MATCH_CRITERIA_ENABLE_MISC2_BIT 2603 }; 2604 2605 #define HEADER_IS_ZERO(match_criteria, headers) \ 2606 !(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \ 2607 0, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \ 2608 2609 static u8 get_match_criteria_enable(u32 *match_criteria) 2610 { 2611 u8 match_criteria_enable; 2612 2613 match_criteria_enable = 2614 (!HEADER_IS_ZERO(match_criteria, outer_headers)) << 2615 MATCH_CRITERIA_ENABLE_OUTER_BIT; 2616 match_criteria_enable |= 2617 (!HEADER_IS_ZERO(match_criteria, misc_parameters)) << 2618 MATCH_CRITERIA_ENABLE_MISC_BIT; 2619 match_criteria_enable |= 2620 (!HEADER_IS_ZERO(match_criteria, inner_headers)) << 2621 MATCH_CRITERIA_ENABLE_INNER_BIT; 2622 match_criteria_enable |= 2623 (!HEADER_IS_ZERO(match_criteria, misc_parameters_2)) << 2624 MATCH_CRITERIA_ENABLE_MISC2_BIT; 2625 2626 return match_criteria_enable; 2627 } 2628 2629 static int set_proto(void *outer_c, void *outer_v, u8 mask, u8 val) 2630 { 2631 u8 entry_mask; 2632 u8 entry_val; 2633 int err = 0; 2634 2635 if (!mask) 2636 goto out; 2637 2638 entry_mask = MLX5_GET(fte_match_set_lyr_2_4, outer_c, 2639 ip_protocol); 2640 entry_val = MLX5_GET(fte_match_set_lyr_2_4, outer_v, 2641 ip_protocol); 2642 if (!entry_mask) { 2643 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask); 2644 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val); 2645 goto out; 2646 } 2647 /* Don't override existing ip protocol */ 2648 if (mask != entry_mask || val != entry_val) 2649 err = -EINVAL; 2650 out: 2651 return err; 2652 } 2653 2654 static void set_flow_label(void *misc_c, void *misc_v, u32 mask, u32 val, 2655 bool inner) 2656 { 2657 if (inner) { 2658 MLX5_SET(fte_match_set_misc, 2659 misc_c, inner_ipv6_flow_label, mask); 2660 MLX5_SET(fte_match_set_misc, 2661 misc_v, inner_ipv6_flow_label, val); 2662 } else { 2663 MLX5_SET(fte_match_set_misc, 2664 misc_c, outer_ipv6_flow_label, mask); 2665 MLX5_SET(fte_match_set_misc, 2666 misc_v, outer_ipv6_flow_label, val); 2667 } 2668 } 2669 2670 static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val) 2671 { 2672 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask); 2673 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val); 2674 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2); 2675 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2); 2676 } 2677 2678 static int check_mpls_supp_fields(u32 field_support, const __be32 *set_mask) 2679 { 2680 if (MLX5_GET(fte_match_mpls, set_mask, mpls_label) && 2681 !(field_support & MLX5_FIELD_SUPPORT_MPLS_LABEL)) 2682 return -EOPNOTSUPP; 2683 2684 if (MLX5_GET(fte_match_mpls, set_mask, mpls_exp) && 2685 !(field_support & MLX5_FIELD_SUPPORT_MPLS_EXP)) 2686 return -EOPNOTSUPP; 2687 2688 if (MLX5_GET(fte_match_mpls, set_mask, mpls_s_bos) && 2689 !(field_support & MLX5_FIELD_SUPPORT_MPLS_S_BOS)) 2690 return -EOPNOTSUPP; 2691 2692 if (MLX5_GET(fte_match_mpls, set_mask, mpls_ttl) && 2693 !(field_support & MLX5_FIELD_SUPPORT_MPLS_TTL)) 2694 return -EOPNOTSUPP; 2695 2696 return 0; 2697 } 2698 2699 #define LAST_ETH_FIELD vlan_tag 2700 #define LAST_IB_FIELD sl 2701 #define LAST_IPV4_FIELD tos 2702 #define LAST_IPV6_FIELD traffic_class 2703 #define LAST_TCP_UDP_FIELD src_port 2704 #define LAST_TUNNEL_FIELD tunnel_id 2705 #define LAST_FLOW_TAG_FIELD tag_id 2706 #define LAST_DROP_FIELD size 2707 #define LAST_COUNTERS_FIELD counters 2708 2709 /* Field is the last supported field */ 2710 #define FIELDS_NOT_SUPPORTED(filter, field)\ 2711 memchr_inv((void *)&filter.field +\ 2712 sizeof(filter.field), 0,\ 2713 sizeof(filter) -\ 2714 offsetof(typeof(filter), field) -\ 2715 sizeof(filter.field)) 2716 2717 int parse_flow_flow_action(struct mlx5_ib_flow_action *maction, 2718 bool is_egress, 2719 struct mlx5_flow_act *action) 2720 { 2721 2722 switch (maction->ib_action.type) { 2723 case IB_FLOW_ACTION_ESP: 2724 if (action->action & (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | 2725 MLX5_FLOW_CONTEXT_ACTION_DECRYPT)) 2726 return -EINVAL; 2727 /* Currently only AES_GCM keymat is supported by the driver */ 2728 action->esp_id = (uintptr_t)maction->esp_aes_gcm.ctx; 2729 action->action |= is_egress ? 2730 MLX5_FLOW_CONTEXT_ACTION_ENCRYPT : 2731 MLX5_FLOW_CONTEXT_ACTION_DECRYPT; 2732 return 0; 2733 case IB_FLOW_ACTION_UNSPECIFIED: 2734 if (maction->flow_action_raw.sub_type == 2735 MLX5_IB_FLOW_ACTION_MODIFY_HEADER) { 2736 if (action->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) 2737 return -EINVAL; 2738 action->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; 2739 action->modify_hdr = 2740 maction->flow_action_raw.modify_hdr; 2741 return 0; 2742 } 2743 if (maction->flow_action_raw.sub_type == 2744 MLX5_IB_FLOW_ACTION_DECAP) { 2745 if (action->action & MLX5_FLOW_CONTEXT_ACTION_DECAP) 2746 return -EINVAL; 2747 action->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP; 2748 return 0; 2749 } 2750 if (maction->flow_action_raw.sub_type == 2751 MLX5_IB_FLOW_ACTION_PACKET_REFORMAT) { 2752 if (action->action & 2753 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT) 2754 return -EINVAL; 2755 action->action |= 2756 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT; 2757 action->pkt_reformat = 2758 maction->flow_action_raw.pkt_reformat; 2759 return 0; 2760 } 2761 /* fall through */ 2762 default: 2763 return -EOPNOTSUPP; 2764 } 2765 } 2766 2767 static int parse_flow_attr(struct mlx5_core_dev *mdev, 2768 struct mlx5_flow_spec *spec, 2769 const union ib_flow_spec *ib_spec, 2770 const struct ib_flow_attr *flow_attr, 2771 struct mlx5_flow_act *action, u32 prev_type) 2772 { 2773 struct mlx5_flow_context *flow_context = &spec->flow_context; 2774 u32 *match_c = spec->match_criteria; 2775 u32 *match_v = spec->match_value; 2776 void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c, 2777 misc_parameters); 2778 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v, 2779 misc_parameters); 2780 void *misc_params2_c = MLX5_ADDR_OF(fte_match_param, match_c, 2781 misc_parameters_2); 2782 void *misc_params2_v = MLX5_ADDR_OF(fte_match_param, match_v, 2783 misc_parameters_2); 2784 void *headers_c; 2785 void *headers_v; 2786 int match_ipv; 2787 int ret; 2788 2789 if (ib_spec->type & IB_FLOW_SPEC_INNER) { 2790 headers_c = MLX5_ADDR_OF(fte_match_param, match_c, 2791 inner_headers); 2792 headers_v = MLX5_ADDR_OF(fte_match_param, match_v, 2793 inner_headers); 2794 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev, 2795 ft_field_support.inner_ip_version); 2796 } else { 2797 headers_c = MLX5_ADDR_OF(fte_match_param, match_c, 2798 outer_headers); 2799 headers_v = MLX5_ADDR_OF(fte_match_param, match_v, 2800 outer_headers); 2801 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev, 2802 ft_field_support.outer_ip_version); 2803 } 2804 2805 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { 2806 case IB_FLOW_SPEC_ETH: 2807 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) 2808 return -EOPNOTSUPP; 2809 2810 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, 2811 dmac_47_16), 2812 ib_spec->eth.mask.dst_mac); 2813 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, 2814 dmac_47_16), 2815 ib_spec->eth.val.dst_mac); 2816 2817 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, 2818 smac_47_16), 2819 ib_spec->eth.mask.src_mac); 2820 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, 2821 smac_47_16), 2822 ib_spec->eth.val.src_mac); 2823 2824 if (ib_spec->eth.mask.vlan_tag) { 2825 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2826 cvlan_tag, 1); 2827 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2828 cvlan_tag, 1); 2829 2830 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2831 first_vid, ntohs(ib_spec->eth.mask.vlan_tag)); 2832 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2833 first_vid, ntohs(ib_spec->eth.val.vlan_tag)); 2834 2835 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2836 first_cfi, 2837 ntohs(ib_spec->eth.mask.vlan_tag) >> 12); 2838 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2839 first_cfi, 2840 ntohs(ib_spec->eth.val.vlan_tag) >> 12); 2841 2842 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2843 first_prio, 2844 ntohs(ib_spec->eth.mask.vlan_tag) >> 13); 2845 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2846 first_prio, 2847 ntohs(ib_spec->eth.val.vlan_tag) >> 13); 2848 } 2849 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2850 ethertype, ntohs(ib_spec->eth.mask.ether_type)); 2851 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2852 ethertype, ntohs(ib_spec->eth.val.ether_type)); 2853 break; 2854 case IB_FLOW_SPEC_IPV4: 2855 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) 2856 return -EOPNOTSUPP; 2857 2858 if (match_ipv) { 2859 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2860 ip_version, 0xf); 2861 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2862 ip_version, MLX5_FS_IPV4_VERSION); 2863 } else { 2864 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2865 ethertype, 0xffff); 2866 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2867 ethertype, ETH_P_IP); 2868 } 2869 2870 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, 2871 src_ipv4_src_ipv6.ipv4_layout.ipv4), 2872 &ib_spec->ipv4.mask.src_ip, 2873 sizeof(ib_spec->ipv4.mask.src_ip)); 2874 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, 2875 src_ipv4_src_ipv6.ipv4_layout.ipv4), 2876 &ib_spec->ipv4.val.src_ip, 2877 sizeof(ib_spec->ipv4.val.src_ip)); 2878 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, 2879 dst_ipv4_dst_ipv6.ipv4_layout.ipv4), 2880 &ib_spec->ipv4.mask.dst_ip, 2881 sizeof(ib_spec->ipv4.mask.dst_ip)); 2882 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, 2883 dst_ipv4_dst_ipv6.ipv4_layout.ipv4), 2884 &ib_spec->ipv4.val.dst_ip, 2885 sizeof(ib_spec->ipv4.val.dst_ip)); 2886 2887 set_tos(headers_c, headers_v, 2888 ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos); 2889 2890 if (set_proto(headers_c, headers_v, 2891 ib_spec->ipv4.mask.proto, 2892 ib_spec->ipv4.val.proto)) 2893 return -EINVAL; 2894 break; 2895 case IB_FLOW_SPEC_IPV6: 2896 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD)) 2897 return -EOPNOTSUPP; 2898 2899 if (match_ipv) { 2900 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2901 ip_version, 0xf); 2902 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2903 ip_version, MLX5_FS_IPV6_VERSION); 2904 } else { 2905 MLX5_SET(fte_match_set_lyr_2_4, headers_c, 2906 ethertype, 0xffff); 2907 MLX5_SET(fte_match_set_lyr_2_4, headers_v, 2908 ethertype, ETH_P_IPV6); 2909 } 2910 2911 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, 2912 src_ipv4_src_ipv6.ipv6_layout.ipv6), 2913 &ib_spec->ipv6.mask.src_ip, 2914 sizeof(ib_spec->ipv6.mask.src_ip)); 2915 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, 2916 src_ipv4_src_ipv6.ipv6_layout.ipv6), 2917 &ib_spec->ipv6.val.src_ip, 2918 sizeof(ib_spec->ipv6.val.src_ip)); 2919 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, 2920 dst_ipv4_dst_ipv6.ipv6_layout.ipv6), 2921 &ib_spec->ipv6.mask.dst_ip, 2922 sizeof(ib_spec->ipv6.mask.dst_ip)); 2923 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, 2924 dst_ipv4_dst_ipv6.ipv6_layout.ipv6), 2925 &ib_spec->ipv6.val.dst_ip, 2926 sizeof(ib_spec->ipv6.val.dst_ip)); 2927 2928 set_tos(headers_c, headers_v, 2929 ib_spec->ipv6.mask.traffic_class, 2930 ib_spec->ipv6.val.traffic_class); 2931 2932 if (set_proto(headers_c, headers_v, 2933 ib_spec->ipv6.mask.next_hdr, 2934 ib_spec->ipv6.val.next_hdr)) 2935 return -EINVAL; 2936 2937 set_flow_label(misc_params_c, misc_params_v, 2938 ntohl(ib_spec->ipv6.mask.flow_label), 2939 ntohl(ib_spec->ipv6.val.flow_label), 2940 ib_spec->type & IB_FLOW_SPEC_INNER); 2941 break; 2942 case IB_FLOW_SPEC_ESP: 2943 if (ib_spec->esp.mask.seq) 2944 return -EOPNOTSUPP; 2945 2946 MLX5_SET(fte_match_set_misc, misc_params_c, outer_esp_spi, 2947 ntohl(ib_spec->esp.mask.spi)); 2948 MLX5_SET(fte_match_set_misc, misc_params_v, outer_esp_spi, 2949 ntohl(ib_spec->esp.val.spi)); 2950 break; 2951 case IB_FLOW_SPEC_TCP: 2952 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, 2953 LAST_TCP_UDP_FIELD)) 2954 return -EOPNOTSUPP; 2955 2956 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_TCP)) 2957 return -EINVAL; 2958 2959 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport, 2960 ntohs(ib_spec->tcp_udp.mask.src_port)); 2961 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport, 2962 ntohs(ib_spec->tcp_udp.val.src_port)); 2963 2964 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport, 2965 ntohs(ib_spec->tcp_udp.mask.dst_port)); 2966 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport, 2967 ntohs(ib_spec->tcp_udp.val.dst_port)); 2968 break; 2969 case IB_FLOW_SPEC_UDP: 2970 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, 2971 LAST_TCP_UDP_FIELD)) 2972 return -EOPNOTSUPP; 2973 2974 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_UDP)) 2975 return -EINVAL; 2976 2977 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport, 2978 ntohs(ib_spec->tcp_udp.mask.src_port)); 2979 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport, 2980 ntohs(ib_spec->tcp_udp.val.src_port)); 2981 2982 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport, 2983 ntohs(ib_spec->tcp_udp.mask.dst_port)); 2984 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, 2985 ntohs(ib_spec->tcp_udp.val.dst_port)); 2986 break; 2987 case IB_FLOW_SPEC_GRE: 2988 if (ib_spec->gre.mask.c_ks_res0_ver) 2989 return -EOPNOTSUPP; 2990 2991 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_GRE)) 2992 return -EINVAL; 2993 2994 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol, 2995 0xff); 2996 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, 2997 IPPROTO_GRE); 2998 2999 MLX5_SET(fte_match_set_misc, misc_params_c, gre_protocol, 3000 ntohs(ib_spec->gre.mask.protocol)); 3001 MLX5_SET(fte_match_set_misc, misc_params_v, gre_protocol, 3002 ntohs(ib_spec->gre.val.protocol)); 3003 3004 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_c, 3005 gre_key.nvgre.hi), 3006 &ib_spec->gre.mask.key, 3007 sizeof(ib_spec->gre.mask.key)); 3008 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_v, 3009 gre_key.nvgre.hi), 3010 &ib_spec->gre.val.key, 3011 sizeof(ib_spec->gre.val.key)); 3012 break; 3013 case IB_FLOW_SPEC_MPLS: 3014 switch (prev_type) { 3015 case IB_FLOW_SPEC_UDP: 3016 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev, 3017 ft_field_support.outer_first_mpls_over_udp), 3018 &ib_spec->mpls.mask.tag)) 3019 return -EOPNOTSUPP; 3020 3021 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v, 3022 outer_first_mpls_over_udp), 3023 &ib_spec->mpls.val.tag, 3024 sizeof(ib_spec->mpls.val.tag)); 3025 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c, 3026 outer_first_mpls_over_udp), 3027 &ib_spec->mpls.mask.tag, 3028 sizeof(ib_spec->mpls.mask.tag)); 3029 break; 3030 case IB_FLOW_SPEC_GRE: 3031 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev, 3032 ft_field_support.outer_first_mpls_over_gre), 3033 &ib_spec->mpls.mask.tag)) 3034 return -EOPNOTSUPP; 3035 3036 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v, 3037 outer_first_mpls_over_gre), 3038 &ib_spec->mpls.val.tag, 3039 sizeof(ib_spec->mpls.val.tag)); 3040 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c, 3041 outer_first_mpls_over_gre), 3042 &ib_spec->mpls.mask.tag, 3043 sizeof(ib_spec->mpls.mask.tag)); 3044 break; 3045 default: 3046 if (ib_spec->type & IB_FLOW_SPEC_INNER) { 3047 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev, 3048 ft_field_support.inner_first_mpls), 3049 &ib_spec->mpls.mask.tag)) 3050 return -EOPNOTSUPP; 3051 3052 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v, 3053 inner_first_mpls), 3054 &ib_spec->mpls.val.tag, 3055 sizeof(ib_spec->mpls.val.tag)); 3056 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c, 3057 inner_first_mpls), 3058 &ib_spec->mpls.mask.tag, 3059 sizeof(ib_spec->mpls.mask.tag)); 3060 } else { 3061 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev, 3062 ft_field_support.outer_first_mpls), 3063 &ib_spec->mpls.mask.tag)) 3064 return -EOPNOTSUPP; 3065 3066 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v, 3067 outer_first_mpls), 3068 &ib_spec->mpls.val.tag, 3069 sizeof(ib_spec->mpls.val.tag)); 3070 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c, 3071 outer_first_mpls), 3072 &ib_spec->mpls.mask.tag, 3073 sizeof(ib_spec->mpls.mask.tag)); 3074 } 3075 } 3076 break; 3077 case IB_FLOW_SPEC_VXLAN_TUNNEL: 3078 if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask, 3079 LAST_TUNNEL_FIELD)) 3080 return -EOPNOTSUPP; 3081 3082 MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni, 3083 ntohl(ib_spec->tunnel.mask.tunnel_id)); 3084 MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni, 3085 ntohl(ib_spec->tunnel.val.tunnel_id)); 3086 break; 3087 case IB_FLOW_SPEC_ACTION_TAG: 3088 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag, 3089 LAST_FLOW_TAG_FIELD)) 3090 return -EOPNOTSUPP; 3091 if (ib_spec->flow_tag.tag_id >= BIT(24)) 3092 return -EINVAL; 3093 3094 flow_context->flow_tag = ib_spec->flow_tag.tag_id; 3095 flow_context->flags |= FLOW_CONTEXT_HAS_TAG; 3096 break; 3097 case IB_FLOW_SPEC_ACTION_DROP: 3098 if (FIELDS_NOT_SUPPORTED(ib_spec->drop, 3099 LAST_DROP_FIELD)) 3100 return -EOPNOTSUPP; 3101 action->action |= MLX5_FLOW_CONTEXT_ACTION_DROP; 3102 break; 3103 case IB_FLOW_SPEC_ACTION_HANDLE: 3104 ret = parse_flow_flow_action(to_mflow_act(ib_spec->action.act), 3105 flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS, action); 3106 if (ret) 3107 return ret; 3108 break; 3109 case IB_FLOW_SPEC_ACTION_COUNT: 3110 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_count, 3111 LAST_COUNTERS_FIELD)) 3112 return -EOPNOTSUPP; 3113 3114 /* for now support only one counters spec per flow */ 3115 if (action->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) 3116 return -EINVAL; 3117 3118 action->counters = ib_spec->flow_count.counters; 3119 action->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; 3120 break; 3121 default: 3122 return -EINVAL; 3123 } 3124 3125 return 0; 3126 } 3127 3128 /* If a flow could catch both multicast and unicast packets, 3129 * it won't fall into the multicast flow steering table and this rule 3130 * could steal other multicast packets. 3131 */ 3132 static bool flow_is_multicast_only(const struct ib_flow_attr *ib_attr) 3133 { 3134 union ib_flow_spec *flow_spec; 3135 3136 if (ib_attr->type != IB_FLOW_ATTR_NORMAL || 3137 ib_attr->num_of_specs < 1) 3138 return false; 3139 3140 flow_spec = (union ib_flow_spec *)(ib_attr + 1); 3141 if (flow_spec->type == IB_FLOW_SPEC_IPV4) { 3142 struct ib_flow_spec_ipv4 *ipv4_spec; 3143 3144 ipv4_spec = (struct ib_flow_spec_ipv4 *)flow_spec; 3145 if (ipv4_is_multicast(ipv4_spec->val.dst_ip)) 3146 return true; 3147 3148 return false; 3149 } 3150 3151 if (flow_spec->type == IB_FLOW_SPEC_ETH) { 3152 struct ib_flow_spec_eth *eth_spec; 3153 3154 eth_spec = (struct ib_flow_spec_eth *)flow_spec; 3155 return is_multicast_ether_addr(eth_spec->mask.dst_mac) && 3156 is_multicast_ether_addr(eth_spec->val.dst_mac); 3157 } 3158 3159 return false; 3160 } 3161 3162 enum valid_spec { 3163 VALID_SPEC_INVALID, 3164 VALID_SPEC_VALID, 3165 VALID_SPEC_NA, 3166 }; 3167 3168 static enum valid_spec 3169 is_valid_esp_aes_gcm(struct mlx5_core_dev *mdev, 3170 const struct mlx5_flow_spec *spec, 3171 const struct mlx5_flow_act *flow_act, 3172 bool egress) 3173 { 3174 const u32 *match_c = spec->match_criteria; 3175 bool is_crypto = 3176 (flow_act->action & (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | 3177 MLX5_FLOW_CONTEXT_ACTION_DECRYPT)); 3178 bool is_ipsec = mlx5_fs_is_ipsec_flow(match_c); 3179 bool is_drop = flow_act->action & MLX5_FLOW_CONTEXT_ACTION_DROP; 3180 3181 /* 3182 * Currently only crypto is supported in egress, when regular egress 3183 * rules would be supported, always return VALID_SPEC_NA. 3184 */ 3185 if (!is_crypto) 3186 return VALID_SPEC_NA; 3187 3188 return is_crypto && is_ipsec && 3189 (!egress || (!is_drop && 3190 !(spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG))) ? 3191 VALID_SPEC_VALID : VALID_SPEC_INVALID; 3192 } 3193 3194 static bool is_valid_spec(struct mlx5_core_dev *mdev, 3195 const struct mlx5_flow_spec *spec, 3196 const struct mlx5_flow_act *flow_act, 3197 bool egress) 3198 { 3199 /* We curretly only support ipsec egress flow */ 3200 return is_valid_esp_aes_gcm(mdev, spec, flow_act, egress) != VALID_SPEC_INVALID; 3201 } 3202 3203 static bool is_valid_ethertype(struct mlx5_core_dev *mdev, 3204 const struct ib_flow_attr *flow_attr, 3205 bool check_inner) 3206 { 3207 union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1); 3208 int match_ipv = check_inner ? 3209 MLX5_CAP_FLOWTABLE_NIC_RX(mdev, 3210 ft_field_support.inner_ip_version) : 3211 MLX5_CAP_FLOWTABLE_NIC_RX(mdev, 3212 ft_field_support.outer_ip_version); 3213 int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0; 3214 bool ipv4_spec_valid, ipv6_spec_valid; 3215 unsigned int ip_spec_type = 0; 3216 bool has_ethertype = false; 3217 unsigned int spec_index; 3218 bool mask_valid = true; 3219 u16 eth_type = 0; 3220 bool type_valid; 3221 3222 /* Validate that ethertype is correct */ 3223 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) { 3224 if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) && 3225 ib_spec->eth.mask.ether_type) { 3226 mask_valid = (ib_spec->eth.mask.ether_type == 3227 htons(0xffff)); 3228 has_ethertype = true; 3229 eth_type = ntohs(ib_spec->eth.val.ether_type); 3230 } else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) || 3231 (ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) { 3232 ip_spec_type = ib_spec->type; 3233 } 3234 ib_spec = (void *)ib_spec + ib_spec->size; 3235 } 3236 3237 type_valid = (!has_ethertype) || (!ip_spec_type); 3238 if (!type_valid && mask_valid) { 3239 ipv4_spec_valid = (eth_type == ETH_P_IP) && 3240 (ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit)); 3241 ipv6_spec_valid = (eth_type == ETH_P_IPV6) && 3242 (ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit)); 3243 3244 type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) || 3245 (((eth_type == ETH_P_MPLS_UC) || 3246 (eth_type == ETH_P_MPLS_MC)) && match_ipv); 3247 } 3248 3249 return type_valid; 3250 } 3251 3252 static bool is_valid_attr(struct mlx5_core_dev *mdev, 3253 const struct ib_flow_attr *flow_attr) 3254 { 3255 return is_valid_ethertype(mdev, flow_attr, false) && 3256 is_valid_ethertype(mdev, flow_attr, true); 3257 } 3258 3259 static void put_flow_table(struct mlx5_ib_dev *dev, 3260 struct mlx5_ib_flow_prio *prio, bool ft_added) 3261 { 3262 prio->refcount -= !!ft_added; 3263 if (!prio->refcount) { 3264 mlx5_destroy_flow_table(prio->flow_table); 3265 prio->flow_table = NULL; 3266 } 3267 } 3268 3269 static void counters_clear_description(struct ib_counters *counters) 3270 { 3271 struct mlx5_ib_mcounters *mcounters = to_mcounters(counters); 3272 3273 mutex_lock(&mcounters->mcntrs_mutex); 3274 kfree(mcounters->counters_data); 3275 mcounters->counters_data = NULL; 3276 mcounters->cntrs_max_index = 0; 3277 mutex_unlock(&mcounters->mcntrs_mutex); 3278 } 3279 3280 static int mlx5_ib_destroy_flow(struct ib_flow *flow_id) 3281 { 3282 struct mlx5_ib_flow_handler *handler = container_of(flow_id, 3283 struct mlx5_ib_flow_handler, 3284 ibflow); 3285 struct mlx5_ib_flow_handler *iter, *tmp; 3286 struct mlx5_ib_dev *dev = handler->dev; 3287 3288 mutex_lock(&dev->flow_db->lock); 3289 3290 list_for_each_entry_safe(iter, tmp, &handler->list, list) { 3291 mlx5_del_flow_rules(iter->rule); 3292 put_flow_table(dev, iter->prio, true); 3293 list_del(&iter->list); 3294 kfree(iter); 3295 } 3296 3297 mlx5_del_flow_rules(handler->rule); 3298 put_flow_table(dev, handler->prio, true); 3299 if (handler->ibcounters && 3300 atomic_read(&handler->ibcounters->usecnt) == 1) 3301 counters_clear_description(handler->ibcounters); 3302 3303 mutex_unlock(&dev->flow_db->lock); 3304 if (handler->flow_matcher) 3305 atomic_dec(&handler->flow_matcher->usecnt); 3306 kfree(handler); 3307 3308 return 0; 3309 } 3310 3311 static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap) 3312 { 3313 priority *= 2; 3314 if (!dont_trap) 3315 priority++; 3316 return priority; 3317 } 3318 3319 enum flow_table_type { 3320 MLX5_IB_FT_RX, 3321 MLX5_IB_FT_TX 3322 }; 3323 3324 #define MLX5_FS_MAX_TYPES 6 3325 #define MLX5_FS_MAX_ENTRIES BIT(16) 3326 3327 static struct mlx5_ib_flow_prio *_get_prio(struct mlx5_flow_namespace *ns, 3328 struct mlx5_ib_flow_prio *prio, 3329 int priority, 3330 int num_entries, int num_groups, 3331 u32 flags) 3332 { 3333 struct mlx5_flow_table_attr ft_attr = {}; 3334 struct mlx5_flow_table *ft; 3335 3336 ft_attr.prio = priority; 3337 ft_attr.max_fte = num_entries; 3338 ft_attr.flags = flags; 3339 ft_attr.autogroup.max_num_groups = num_groups; 3340 ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr); 3341 if (IS_ERR(ft)) 3342 return ERR_CAST(ft); 3343 3344 prio->flow_table = ft; 3345 prio->refcount = 0; 3346 return prio; 3347 } 3348 3349 static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev, 3350 struct ib_flow_attr *flow_attr, 3351 enum flow_table_type ft_type) 3352 { 3353 bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP; 3354 struct mlx5_flow_namespace *ns = NULL; 3355 struct mlx5_ib_flow_prio *prio; 3356 struct mlx5_flow_table *ft; 3357 int max_table_size; 3358 int num_entries; 3359 int num_groups; 3360 bool esw_encap; 3361 u32 flags = 0; 3362 int priority; 3363 3364 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, 3365 log_max_ft_size)); 3366 esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) != 3367 DEVLINK_ESWITCH_ENCAP_MODE_NONE; 3368 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) { 3369 enum mlx5_flow_namespace_type fn_type; 3370 3371 if (flow_is_multicast_only(flow_attr) && 3372 !dont_trap) 3373 priority = MLX5_IB_FLOW_MCAST_PRIO; 3374 else 3375 priority = ib_prio_to_core_prio(flow_attr->priority, 3376 dont_trap); 3377 if (ft_type == MLX5_IB_FT_RX) { 3378 fn_type = MLX5_FLOW_NAMESPACE_BYPASS; 3379 prio = &dev->flow_db->prios[priority]; 3380 if (!dev->is_rep && !esw_encap && 3381 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap)) 3382 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP; 3383 if (!dev->is_rep && !esw_encap && 3384 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, 3385 reformat_l3_tunnel_to_l2)) 3386 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT; 3387 } else { 3388 max_table_size = 3389 BIT(MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, 3390 log_max_ft_size)); 3391 fn_type = MLX5_FLOW_NAMESPACE_EGRESS; 3392 prio = &dev->flow_db->egress_prios[priority]; 3393 if (!dev->is_rep && !esw_encap && 3394 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat)) 3395 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT; 3396 } 3397 ns = mlx5_get_flow_namespace(dev->mdev, fn_type); 3398 num_entries = MLX5_FS_MAX_ENTRIES; 3399 num_groups = MLX5_FS_MAX_TYPES; 3400 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || 3401 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) { 3402 ns = mlx5_get_flow_namespace(dev->mdev, 3403 MLX5_FLOW_NAMESPACE_LEFTOVERS); 3404 build_leftovers_ft_param(&priority, 3405 &num_entries, 3406 &num_groups); 3407 prio = &dev->flow_db->prios[MLX5_IB_FLOW_LEFTOVERS_PRIO]; 3408 } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) { 3409 if (!MLX5_CAP_FLOWTABLE(dev->mdev, 3410 allow_sniffer_and_nic_rx_shared_tir)) 3411 return ERR_PTR(-ENOTSUPP); 3412 3413 ns = mlx5_get_flow_namespace(dev->mdev, ft_type == MLX5_IB_FT_RX ? 3414 MLX5_FLOW_NAMESPACE_SNIFFER_RX : 3415 MLX5_FLOW_NAMESPACE_SNIFFER_TX); 3416 3417 prio = &dev->flow_db->sniffer[ft_type]; 3418 priority = 0; 3419 num_entries = 1; 3420 num_groups = 1; 3421 } 3422 3423 if (!ns) 3424 return ERR_PTR(-ENOTSUPP); 3425 3426 max_table_size = min_t(int, num_entries, max_table_size); 3427 3428 ft = prio->flow_table; 3429 if (!ft) 3430 return _get_prio(ns, prio, priority, max_table_size, num_groups, 3431 flags); 3432 3433 return prio; 3434 } 3435 3436 static void set_underlay_qp(struct mlx5_ib_dev *dev, 3437 struct mlx5_flow_spec *spec, 3438 u32 underlay_qpn) 3439 { 3440 void *misc_params_c = MLX5_ADDR_OF(fte_match_param, 3441 spec->match_criteria, 3442 misc_parameters); 3443 void *misc_params_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, 3444 misc_parameters); 3445 3446 if (underlay_qpn && 3447 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, 3448 ft_field_support.bth_dst_qp)) { 3449 MLX5_SET(fte_match_set_misc, 3450 misc_params_v, bth_dst_qp, underlay_qpn); 3451 MLX5_SET(fte_match_set_misc, 3452 misc_params_c, bth_dst_qp, 0xffffff); 3453 } 3454 } 3455 3456 static int read_flow_counters(struct ib_device *ibdev, 3457 struct mlx5_read_counters_attr *read_attr) 3458 { 3459 struct mlx5_fc *fc = read_attr->hw_cntrs_hndl; 3460 struct mlx5_ib_dev *dev = to_mdev(ibdev); 3461 3462 return mlx5_fc_query(dev->mdev, fc, 3463 &read_attr->out[IB_COUNTER_PACKETS], 3464 &read_attr->out[IB_COUNTER_BYTES]); 3465 } 3466 3467 /* flow counters currently expose two counters packets and bytes */ 3468 #define FLOW_COUNTERS_NUM 2 3469 static int counters_set_description(struct ib_counters *counters, 3470 enum mlx5_ib_counters_type counters_type, 3471 struct mlx5_ib_flow_counters_desc *desc_data, 3472 u32 ncounters) 3473 { 3474 struct mlx5_ib_mcounters *mcounters = to_mcounters(counters); 3475 u32 cntrs_max_index = 0; 3476 int i; 3477 3478 if (counters_type != MLX5_IB_COUNTERS_FLOW) 3479 return -EINVAL; 3480 3481 /* init the fields for the object */ 3482 mcounters->type = counters_type; 3483 mcounters->read_counters = read_flow_counters; 3484 mcounters->counters_num = FLOW_COUNTERS_NUM; 3485 mcounters->ncounters = ncounters; 3486 /* each counter entry have both description and index pair */ 3487 for (i = 0; i < ncounters; i++) { 3488 if (desc_data[i].description > IB_COUNTER_BYTES) 3489 return -EINVAL; 3490 3491 if (cntrs_max_index <= desc_data[i].index) 3492 cntrs_max_index = desc_data[i].index + 1; 3493 } 3494 3495 mutex_lock(&mcounters->mcntrs_mutex); 3496 mcounters->counters_data = desc_data; 3497 mcounters->cntrs_max_index = cntrs_max_index; 3498 mutex_unlock(&mcounters->mcntrs_mutex); 3499 3500 return 0; 3501 } 3502 3503 #define MAX_COUNTERS_NUM (USHRT_MAX / (sizeof(u32) * 2)) 3504 static int flow_counters_set_data(struct ib_counters *ibcounters, 3505 struct mlx5_ib_create_flow *ucmd) 3506 { 3507 struct mlx5_ib_mcounters *mcounters = to_mcounters(ibcounters); 3508 struct mlx5_ib_flow_counters_data *cntrs_data = NULL; 3509 struct mlx5_ib_flow_counters_desc *desc_data = NULL; 3510 bool hw_hndl = false; 3511 int ret = 0; 3512 3513 if (ucmd && ucmd->ncounters_data != 0) { 3514 cntrs_data = ucmd->data; 3515 if (cntrs_data->ncounters > MAX_COUNTERS_NUM) 3516 return -EINVAL; 3517 3518 desc_data = kcalloc(cntrs_data->ncounters, 3519 sizeof(*desc_data), 3520 GFP_KERNEL); 3521 if (!desc_data) 3522 return -ENOMEM; 3523 3524 if (copy_from_user(desc_data, 3525 u64_to_user_ptr(cntrs_data->counters_data), 3526 sizeof(*desc_data) * cntrs_data->ncounters)) { 3527 ret = -EFAULT; 3528 goto free; 3529 } 3530 } 3531 3532 if (!mcounters->hw_cntrs_hndl) { 3533 mcounters->hw_cntrs_hndl = mlx5_fc_create( 3534 to_mdev(ibcounters->device)->mdev, false); 3535 if (IS_ERR(mcounters->hw_cntrs_hndl)) { 3536 ret = PTR_ERR(mcounters->hw_cntrs_hndl); 3537 goto free; 3538 } 3539 hw_hndl = true; 3540 } 3541 3542 if (desc_data) { 3543 /* counters already bound to at least one flow */ 3544 if (mcounters->cntrs_max_index) { 3545 ret = -EINVAL; 3546 goto free_hndl; 3547 } 3548 3549 ret = counters_set_description(ibcounters, 3550 MLX5_IB_COUNTERS_FLOW, 3551 desc_data, 3552 cntrs_data->ncounters); 3553 if (ret) 3554 goto free_hndl; 3555 3556 } else if (!mcounters->cntrs_max_index) { 3557 /* counters not bound yet, must have udata passed */ 3558 ret = -EINVAL; 3559 goto free_hndl; 3560 } 3561 3562 return 0; 3563 3564 free_hndl: 3565 if (hw_hndl) { 3566 mlx5_fc_destroy(to_mdev(ibcounters->device)->mdev, 3567 mcounters->hw_cntrs_hndl); 3568 mcounters->hw_cntrs_hndl = NULL; 3569 } 3570 free: 3571 kfree(desc_data); 3572 return ret; 3573 } 3574 3575 static void mlx5_ib_set_rule_source_port(struct mlx5_ib_dev *dev, 3576 struct mlx5_flow_spec *spec, 3577 struct mlx5_eswitch_rep *rep) 3578 { 3579 struct mlx5_eswitch *esw = dev->mdev->priv.eswitch; 3580 void *misc; 3581 3582 if (mlx5_eswitch_vport_match_metadata_enabled(esw)) { 3583 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, 3584 misc_parameters_2); 3585 3586 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0, 3587 mlx5_eswitch_get_vport_metadata_for_match(esw, 3588 rep->vport)); 3589 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, 3590 misc_parameters_2); 3591 3592 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0, 3593 mlx5_eswitch_get_vport_metadata_mask()); 3594 } else { 3595 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, 3596 misc_parameters); 3597 3598 MLX5_SET(fte_match_set_misc, misc, source_port, rep->vport); 3599 3600 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, 3601 misc_parameters); 3602 3603 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port); 3604 } 3605 } 3606 3607 static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev, 3608 struct mlx5_ib_flow_prio *ft_prio, 3609 const struct ib_flow_attr *flow_attr, 3610 struct mlx5_flow_destination *dst, 3611 u32 underlay_qpn, 3612 struct mlx5_ib_create_flow *ucmd) 3613 { 3614 struct mlx5_flow_table *ft = ft_prio->flow_table; 3615 struct mlx5_ib_flow_handler *handler; 3616 struct mlx5_flow_act flow_act = {}; 3617 struct mlx5_flow_spec *spec; 3618 struct mlx5_flow_destination dest_arr[2] = {}; 3619 struct mlx5_flow_destination *rule_dst = dest_arr; 3620 const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr); 3621 unsigned int spec_index; 3622 u32 prev_type = 0; 3623 int err = 0; 3624 int dest_num = 0; 3625 bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS; 3626 3627 if (!is_valid_attr(dev->mdev, flow_attr)) 3628 return ERR_PTR(-EINVAL); 3629 3630 if (dev->is_rep && is_egress) 3631 return ERR_PTR(-EINVAL); 3632 3633 spec = kvzalloc(sizeof(*spec), GFP_KERNEL); 3634 handler = kzalloc(sizeof(*handler), GFP_KERNEL); 3635 if (!handler || !spec) { 3636 err = -ENOMEM; 3637 goto free; 3638 } 3639 3640 INIT_LIST_HEAD(&handler->list); 3641 3642 for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) { 3643 err = parse_flow_attr(dev->mdev, spec, 3644 ib_flow, flow_attr, &flow_act, 3645 prev_type); 3646 if (err < 0) 3647 goto free; 3648 3649 prev_type = ((union ib_flow_spec *)ib_flow)->type; 3650 ib_flow += ((union ib_flow_spec *)ib_flow)->size; 3651 } 3652 3653 if (dst && !(flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP)) { 3654 memcpy(&dest_arr[0], dst, sizeof(*dst)); 3655 dest_num++; 3656 } 3657 3658 if (!flow_is_multicast_only(flow_attr)) 3659 set_underlay_qp(dev, spec, underlay_qpn); 3660 3661 if (dev->is_rep) { 3662 struct mlx5_eswitch_rep *rep; 3663 3664 rep = dev->port[flow_attr->port - 1].rep; 3665 if (!rep) { 3666 err = -EINVAL; 3667 goto free; 3668 } 3669 3670 mlx5_ib_set_rule_source_port(dev, spec, rep); 3671 } 3672 3673 spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria); 3674 3675 if (is_egress && 3676 !is_valid_spec(dev->mdev, spec, &flow_act, is_egress)) { 3677 err = -EINVAL; 3678 goto free; 3679 } 3680 3681 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { 3682 struct mlx5_ib_mcounters *mcounters; 3683 3684 err = flow_counters_set_data(flow_act.counters, ucmd); 3685 if (err) 3686 goto free; 3687 3688 mcounters = to_mcounters(flow_act.counters); 3689 handler->ibcounters = flow_act.counters; 3690 dest_arr[dest_num].type = 3691 MLX5_FLOW_DESTINATION_TYPE_COUNTER; 3692 dest_arr[dest_num].counter_id = 3693 mlx5_fc_id(mcounters->hw_cntrs_hndl); 3694 dest_num++; 3695 } 3696 3697 if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP) { 3698 if (!dest_num) 3699 rule_dst = NULL; 3700 } else { 3701 if (is_egress) 3702 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW; 3703 else 3704 flow_act.action |= 3705 dest_num ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST : 3706 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO; 3707 } 3708 3709 if ((spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG) && 3710 (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || 3711 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) { 3712 mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n", 3713 spec->flow_context.flow_tag, flow_attr->type); 3714 err = -EINVAL; 3715 goto free; 3716 } 3717 handler->rule = mlx5_add_flow_rules(ft, spec, 3718 &flow_act, 3719 rule_dst, dest_num); 3720 3721 if (IS_ERR(handler->rule)) { 3722 err = PTR_ERR(handler->rule); 3723 goto free; 3724 } 3725 3726 ft_prio->refcount++; 3727 handler->prio = ft_prio; 3728 handler->dev = dev; 3729 3730 ft_prio->flow_table = ft; 3731 free: 3732 if (err && handler) { 3733 if (handler->ibcounters && 3734 atomic_read(&handler->ibcounters->usecnt) == 1) 3735 counters_clear_description(handler->ibcounters); 3736 kfree(handler); 3737 } 3738 kvfree(spec); 3739 return err ? ERR_PTR(err) : handler; 3740 } 3741 3742 static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev, 3743 struct mlx5_ib_flow_prio *ft_prio, 3744 const struct ib_flow_attr *flow_attr, 3745 struct mlx5_flow_destination *dst) 3746 { 3747 return _create_flow_rule(dev, ft_prio, flow_attr, dst, 0, NULL); 3748 } 3749 3750 static struct mlx5_ib_flow_handler *create_dont_trap_rule(struct mlx5_ib_dev *dev, 3751 struct mlx5_ib_flow_prio *ft_prio, 3752 struct ib_flow_attr *flow_attr, 3753 struct mlx5_flow_destination *dst) 3754 { 3755 struct mlx5_ib_flow_handler *handler_dst = NULL; 3756 struct mlx5_ib_flow_handler *handler = NULL; 3757 3758 handler = create_flow_rule(dev, ft_prio, flow_attr, NULL); 3759 if (!IS_ERR(handler)) { 3760 handler_dst = create_flow_rule(dev, ft_prio, 3761 flow_attr, dst); 3762 if (IS_ERR(handler_dst)) { 3763 mlx5_del_flow_rules(handler->rule); 3764 ft_prio->refcount--; 3765 kfree(handler); 3766 handler = handler_dst; 3767 } else { 3768 list_add(&handler_dst->list, &handler->list); 3769 } 3770 } 3771 3772 return handler; 3773 } 3774 enum { 3775 LEFTOVERS_MC, 3776 LEFTOVERS_UC, 3777 }; 3778 3779 static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev, 3780 struct mlx5_ib_flow_prio *ft_prio, 3781 struct ib_flow_attr *flow_attr, 3782 struct mlx5_flow_destination *dst) 3783 { 3784 struct mlx5_ib_flow_handler *handler_ucast = NULL; 3785 struct mlx5_ib_flow_handler *handler = NULL; 3786 3787 static struct { 3788 struct ib_flow_attr flow_attr; 3789 struct ib_flow_spec_eth eth_flow; 3790 } leftovers_specs[] = { 3791 [LEFTOVERS_MC] = { 3792 .flow_attr = { 3793 .num_of_specs = 1, 3794 .size = sizeof(leftovers_specs[0]) 3795 }, 3796 .eth_flow = { 3797 .type = IB_FLOW_SPEC_ETH, 3798 .size = sizeof(struct ib_flow_spec_eth), 3799 .mask = {.dst_mac = {0x1} }, 3800 .val = {.dst_mac = {0x1} } 3801 } 3802 }, 3803 [LEFTOVERS_UC] = { 3804 .flow_attr = { 3805 .num_of_specs = 1, 3806 .size = sizeof(leftovers_specs[0]) 3807 }, 3808 .eth_flow = { 3809 .type = IB_FLOW_SPEC_ETH, 3810 .size = sizeof(struct ib_flow_spec_eth), 3811 .mask = {.dst_mac = {0x1} }, 3812 .val = {.dst_mac = {} } 3813 } 3814 } 3815 }; 3816 3817 handler = create_flow_rule(dev, ft_prio, 3818 &leftovers_specs[LEFTOVERS_MC].flow_attr, 3819 dst); 3820 if (!IS_ERR(handler) && 3821 flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) { 3822 handler_ucast = create_flow_rule(dev, ft_prio, 3823 &leftovers_specs[LEFTOVERS_UC].flow_attr, 3824 dst); 3825 if (IS_ERR(handler_ucast)) { 3826 mlx5_del_flow_rules(handler->rule); 3827 ft_prio->refcount--; 3828 kfree(handler); 3829 handler = handler_ucast; 3830 } else { 3831 list_add(&handler_ucast->list, &handler->list); 3832 } 3833 } 3834 3835 return handler; 3836 } 3837 3838 static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev, 3839 struct mlx5_ib_flow_prio *ft_rx, 3840 struct mlx5_ib_flow_prio *ft_tx, 3841 struct mlx5_flow_destination *dst) 3842 { 3843 struct mlx5_ib_flow_handler *handler_rx; 3844 struct mlx5_ib_flow_handler *handler_tx; 3845 int err; 3846 static const struct ib_flow_attr flow_attr = { 3847 .num_of_specs = 0, 3848 .size = sizeof(flow_attr) 3849 }; 3850 3851 handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst); 3852 if (IS_ERR(handler_rx)) { 3853 err = PTR_ERR(handler_rx); 3854 goto err; 3855 } 3856 3857 handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst); 3858 if (IS_ERR(handler_tx)) { 3859 err = PTR_ERR(handler_tx); 3860 goto err_tx; 3861 } 3862 3863 list_add(&handler_tx->list, &handler_rx->list); 3864 3865 return handler_rx; 3866 3867 err_tx: 3868 mlx5_del_flow_rules(handler_rx->rule); 3869 ft_rx->refcount--; 3870 kfree(handler_rx); 3871 err: 3872 return ERR_PTR(err); 3873 } 3874 3875 static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp, 3876 struct ib_flow_attr *flow_attr, 3877 int domain, 3878 struct ib_udata *udata) 3879 { 3880 struct mlx5_ib_dev *dev = to_mdev(qp->device); 3881 struct mlx5_ib_qp *mqp = to_mqp(qp); 3882 struct mlx5_ib_flow_handler *handler = NULL; 3883 struct mlx5_flow_destination *dst = NULL; 3884 struct mlx5_ib_flow_prio *ft_prio_tx = NULL; 3885 struct mlx5_ib_flow_prio *ft_prio; 3886 bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS; 3887 struct mlx5_ib_create_flow *ucmd = NULL, ucmd_hdr; 3888 size_t min_ucmd_sz, required_ucmd_sz; 3889 int err; 3890 int underlay_qpn; 3891 3892 if (udata && udata->inlen) { 3893 min_ucmd_sz = offsetof(typeof(ucmd_hdr), reserved) + 3894 sizeof(ucmd_hdr.reserved); 3895 if (udata->inlen < min_ucmd_sz) 3896 return ERR_PTR(-EOPNOTSUPP); 3897 3898 err = ib_copy_from_udata(&ucmd_hdr, udata, min_ucmd_sz); 3899 if (err) 3900 return ERR_PTR(err); 3901 3902 /* currently supports only one counters data */ 3903 if (ucmd_hdr.ncounters_data > 1) 3904 return ERR_PTR(-EINVAL); 3905 3906 required_ucmd_sz = min_ucmd_sz + 3907 sizeof(struct mlx5_ib_flow_counters_data) * 3908 ucmd_hdr.ncounters_data; 3909 if (udata->inlen > required_ucmd_sz && 3910 !ib_is_udata_cleared(udata, required_ucmd_sz, 3911 udata->inlen - required_ucmd_sz)) 3912 return ERR_PTR(-EOPNOTSUPP); 3913 3914 ucmd = kzalloc(required_ucmd_sz, GFP_KERNEL); 3915 if (!ucmd) 3916 return ERR_PTR(-ENOMEM); 3917 3918 err = ib_copy_from_udata(ucmd, udata, required_ucmd_sz); 3919 if (err) 3920 goto free_ucmd; 3921 } 3922 3923 if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) { 3924 err = -ENOMEM; 3925 goto free_ucmd; 3926 } 3927 3928 if (domain != IB_FLOW_DOMAIN_USER || 3929 flow_attr->port > dev->num_ports || 3930 (flow_attr->flags & ~(IB_FLOW_ATTR_FLAGS_DONT_TRAP | 3931 IB_FLOW_ATTR_FLAGS_EGRESS))) { 3932 err = -EINVAL; 3933 goto free_ucmd; 3934 } 3935 3936 if (is_egress && 3937 (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || 3938 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) { 3939 err = -EINVAL; 3940 goto free_ucmd; 3941 } 3942 3943 dst = kzalloc(sizeof(*dst), GFP_KERNEL); 3944 if (!dst) { 3945 err = -ENOMEM; 3946 goto free_ucmd; 3947 } 3948 3949 mutex_lock(&dev->flow_db->lock); 3950 3951 ft_prio = get_flow_table(dev, flow_attr, 3952 is_egress ? MLX5_IB_FT_TX : MLX5_IB_FT_RX); 3953 if (IS_ERR(ft_prio)) { 3954 err = PTR_ERR(ft_prio); 3955 goto unlock; 3956 } 3957 if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) { 3958 ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX); 3959 if (IS_ERR(ft_prio_tx)) { 3960 err = PTR_ERR(ft_prio_tx); 3961 ft_prio_tx = NULL; 3962 goto destroy_ft; 3963 } 3964 } 3965 3966 if (is_egress) { 3967 dst->type = MLX5_FLOW_DESTINATION_TYPE_PORT; 3968 } else { 3969 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR; 3970 if (mqp->flags & MLX5_IB_QP_RSS) 3971 dst->tir_num = mqp->rss_qp.tirn; 3972 else 3973 dst->tir_num = mqp->raw_packet_qp.rq.tirn; 3974 } 3975 3976 if (flow_attr->type == IB_FLOW_ATTR_NORMAL) { 3977 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) { 3978 handler = create_dont_trap_rule(dev, ft_prio, 3979 flow_attr, dst); 3980 } else { 3981 underlay_qpn = (mqp->flags & MLX5_IB_QP_UNDERLAY) ? 3982 mqp->underlay_qpn : 0; 3983 handler = _create_flow_rule(dev, ft_prio, flow_attr, 3984 dst, underlay_qpn, ucmd); 3985 } 3986 } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || 3987 flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) { 3988 handler = create_leftovers_rule(dev, ft_prio, flow_attr, 3989 dst); 3990 } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) { 3991 handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst); 3992 } else { 3993 err = -EINVAL; 3994 goto destroy_ft; 3995 } 3996 3997 if (IS_ERR(handler)) { 3998 err = PTR_ERR(handler); 3999 handler = NULL; 4000 goto destroy_ft; 4001 } 4002 4003 mutex_unlock(&dev->flow_db->lock); 4004 kfree(dst); 4005 kfree(ucmd); 4006 4007 return &handler->ibflow; 4008 4009 destroy_ft: 4010 put_flow_table(dev, ft_prio, false); 4011 if (ft_prio_tx) 4012 put_flow_table(dev, ft_prio_tx, false); 4013 unlock: 4014 mutex_unlock(&dev->flow_db->lock); 4015 kfree(dst); 4016 free_ucmd: 4017 kfree(ucmd); 4018 return ERR_PTR(err); 4019 } 4020 4021 static struct mlx5_ib_flow_prio * 4022 _get_flow_table(struct mlx5_ib_dev *dev, 4023 struct mlx5_ib_flow_matcher *fs_matcher, 4024 bool mcast) 4025 { 4026 struct mlx5_flow_namespace *ns = NULL; 4027 struct mlx5_ib_flow_prio *prio = NULL; 4028 int max_table_size = 0; 4029 bool esw_encap; 4030 u32 flags = 0; 4031 int priority; 4032 4033 if (mcast) 4034 priority = MLX5_IB_FLOW_MCAST_PRIO; 4035 else 4036 priority = ib_prio_to_core_prio(fs_matcher->priority, false); 4037 4038 esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) != 4039 DEVLINK_ESWITCH_ENCAP_MODE_NONE; 4040 if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) { 4041 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, 4042 log_max_ft_size)); 4043 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap) && !esw_encap) 4044 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP; 4045 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, 4046 reformat_l3_tunnel_to_l2) && 4047 !esw_encap) 4048 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT; 4049 } else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS) { 4050 max_table_size = BIT( 4051 MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, log_max_ft_size)); 4052 if (MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat) && !esw_encap) 4053 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT; 4054 } else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB) { 4055 max_table_size = BIT( 4056 MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, log_max_ft_size)); 4057 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, decap) && esw_encap) 4058 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP; 4059 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, reformat_l3_tunnel_to_l2) && 4060 esw_encap) 4061 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT; 4062 priority = FDB_BYPASS_PATH; 4063 } else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) { 4064 max_table_size = 4065 BIT(MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev, 4066 log_max_ft_size)); 4067 priority = fs_matcher->priority; 4068 } else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX) { 4069 max_table_size = 4070 BIT(MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev, 4071 log_max_ft_size)); 4072 priority = fs_matcher->priority; 4073 } 4074 4075 max_table_size = min_t(int, max_table_size, MLX5_FS_MAX_ENTRIES); 4076 4077 ns = mlx5_get_flow_namespace(dev->mdev, fs_matcher->ns_type); 4078 if (!ns) 4079 return ERR_PTR(-ENOTSUPP); 4080 4081 if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) 4082 prio = &dev->flow_db->prios[priority]; 4083 else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS) 4084 prio = &dev->flow_db->egress_prios[priority]; 4085 else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB) 4086 prio = &dev->flow_db->fdb; 4087 else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) 4088 prio = &dev->flow_db->rdma_rx[priority]; 4089 else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX) 4090 prio = &dev->flow_db->rdma_tx[priority]; 4091 4092 if (!prio) 4093 return ERR_PTR(-EINVAL); 4094 4095 if (prio->flow_table) 4096 return prio; 4097 4098 return _get_prio(ns, prio, priority, max_table_size, 4099 MLX5_FS_MAX_TYPES, flags); 4100 } 4101 4102 static struct mlx5_ib_flow_handler * 4103 _create_raw_flow_rule(struct mlx5_ib_dev *dev, 4104 struct mlx5_ib_flow_prio *ft_prio, 4105 struct mlx5_flow_destination *dst, 4106 struct mlx5_ib_flow_matcher *fs_matcher, 4107 struct mlx5_flow_context *flow_context, 4108 struct mlx5_flow_act *flow_act, 4109 void *cmd_in, int inlen, 4110 int dst_num) 4111 { 4112 struct mlx5_ib_flow_handler *handler; 4113 struct mlx5_flow_spec *spec; 4114 struct mlx5_flow_table *ft = ft_prio->flow_table; 4115 int err = 0; 4116 4117 spec = kvzalloc(sizeof(*spec), GFP_KERNEL); 4118 handler = kzalloc(sizeof(*handler), GFP_KERNEL); 4119 if (!handler || !spec) { 4120 err = -ENOMEM; 4121 goto free; 4122 } 4123 4124 INIT_LIST_HEAD(&handler->list); 4125 4126 memcpy(spec->match_value, cmd_in, inlen); 4127 memcpy(spec->match_criteria, fs_matcher->matcher_mask.match_params, 4128 fs_matcher->mask_len); 4129 spec->match_criteria_enable = fs_matcher->match_criteria_enable; 4130 spec->flow_context = *flow_context; 4131 4132 handler->rule = mlx5_add_flow_rules(ft, spec, 4133 flow_act, dst, dst_num); 4134 4135 if (IS_ERR(handler->rule)) { 4136 err = PTR_ERR(handler->rule); 4137 goto free; 4138 } 4139 4140 ft_prio->refcount++; 4141 handler->prio = ft_prio; 4142 handler->dev = dev; 4143 ft_prio->flow_table = ft; 4144 4145 free: 4146 if (err) 4147 kfree(handler); 4148 kvfree(spec); 4149 return err ? ERR_PTR(err) : handler; 4150 } 4151 4152 static bool raw_fs_is_multicast(struct mlx5_ib_flow_matcher *fs_matcher, 4153 void *match_v) 4154 { 4155 void *match_c; 4156 void *match_v_set_lyr_2_4, *match_c_set_lyr_2_4; 4157 void *dmac, *dmac_mask; 4158 void *ipv4, *ipv4_mask; 4159 4160 if (!(fs_matcher->match_criteria_enable & 4161 (1 << MATCH_CRITERIA_ENABLE_OUTER_BIT))) 4162 return false; 4163 4164 match_c = fs_matcher->matcher_mask.match_params; 4165 match_v_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_v, 4166 outer_headers); 4167 match_c_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_c, 4168 outer_headers); 4169 4170 dmac = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4, 4171 dmac_47_16); 4172 dmac_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4, 4173 dmac_47_16); 4174 4175 if (is_multicast_ether_addr(dmac) && 4176 is_multicast_ether_addr(dmac_mask)) 4177 return true; 4178 4179 ipv4 = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4, 4180 dst_ipv4_dst_ipv6.ipv4_layout.ipv4); 4181 4182 ipv4_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4, 4183 dst_ipv4_dst_ipv6.ipv4_layout.ipv4); 4184 4185 if (ipv4_is_multicast(*(__be32 *)(ipv4)) && 4186 ipv4_is_multicast(*(__be32 *)(ipv4_mask))) 4187 return true; 4188 4189 return false; 4190 } 4191 4192 struct mlx5_ib_flow_handler * 4193 mlx5_ib_raw_fs_rule_add(struct mlx5_ib_dev *dev, 4194 struct mlx5_ib_flow_matcher *fs_matcher, 4195 struct mlx5_flow_context *flow_context, 4196 struct mlx5_flow_act *flow_act, 4197 u32 counter_id, 4198 void *cmd_in, int inlen, int dest_id, 4199 int dest_type) 4200 { 4201 struct mlx5_flow_destination *dst; 4202 struct mlx5_ib_flow_prio *ft_prio; 4203 struct mlx5_ib_flow_handler *handler; 4204 int dst_num = 0; 4205 bool mcast; 4206 int err; 4207 4208 if (fs_matcher->flow_type != MLX5_IB_FLOW_TYPE_NORMAL) 4209 return ERR_PTR(-EOPNOTSUPP); 4210 4211 if (fs_matcher->priority > MLX5_IB_FLOW_LAST_PRIO) 4212 return ERR_PTR(-ENOMEM); 4213 4214 dst = kcalloc(2, sizeof(*dst), GFP_KERNEL); 4215 if (!dst) 4216 return ERR_PTR(-ENOMEM); 4217 4218 mcast = raw_fs_is_multicast(fs_matcher, cmd_in); 4219 mutex_lock(&dev->flow_db->lock); 4220 4221 ft_prio = _get_flow_table(dev, fs_matcher, mcast); 4222 if (IS_ERR(ft_prio)) { 4223 err = PTR_ERR(ft_prio); 4224 goto unlock; 4225 } 4226 4227 if (dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR) { 4228 dst[dst_num].type = dest_type; 4229 dst[dst_num].tir_num = dest_id; 4230 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; 4231 } else if (dest_type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE) { 4232 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM; 4233 dst[dst_num].ft_num = dest_id; 4234 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; 4235 } else { 4236 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_PORT; 4237 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW; 4238 } 4239 4240 dst_num++; 4241 4242 if (flow_act->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { 4243 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER; 4244 dst[dst_num].counter_id = counter_id; 4245 dst_num++; 4246 } 4247 4248 handler = _create_raw_flow_rule(dev, ft_prio, dst, fs_matcher, 4249 flow_context, flow_act, 4250 cmd_in, inlen, dst_num); 4251 4252 if (IS_ERR(handler)) { 4253 err = PTR_ERR(handler); 4254 goto destroy_ft; 4255 } 4256 4257 mutex_unlock(&dev->flow_db->lock); 4258 atomic_inc(&fs_matcher->usecnt); 4259 handler->flow_matcher = fs_matcher; 4260 4261 kfree(dst); 4262 4263 return handler; 4264 4265 destroy_ft: 4266 put_flow_table(dev, ft_prio, false); 4267 unlock: 4268 mutex_unlock(&dev->flow_db->lock); 4269 kfree(dst); 4270 4271 return ERR_PTR(err); 4272 } 4273 4274 static u32 mlx5_ib_flow_action_flags_to_accel_xfrm_flags(u32 mlx5_flags) 4275 { 4276 u32 flags = 0; 4277 4278 if (mlx5_flags & MLX5_IB_UAPI_FLOW_ACTION_FLAGS_REQUIRE_METADATA) 4279 flags |= MLX5_ACCEL_XFRM_FLAG_REQUIRE_METADATA; 4280 4281 return flags; 4282 } 4283 4284 #define MLX5_FLOW_ACTION_ESP_CREATE_LAST_SUPPORTED MLX5_IB_UAPI_FLOW_ACTION_FLAGS_REQUIRE_METADATA 4285 static struct ib_flow_action * 4286 mlx5_ib_create_flow_action_esp(struct ib_device *device, 4287 const struct ib_flow_action_attrs_esp *attr, 4288 struct uverbs_attr_bundle *attrs) 4289 { 4290 struct mlx5_ib_dev *mdev = to_mdev(device); 4291 struct ib_uverbs_flow_action_esp_keymat_aes_gcm *aes_gcm; 4292 struct mlx5_accel_esp_xfrm_attrs accel_attrs = {}; 4293 struct mlx5_ib_flow_action *action; 4294 u64 action_flags; 4295 u64 flags; 4296 int err = 0; 4297 4298 err = uverbs_get_flags64( 4299 &action_flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_ACTION_FLAGS, 4300 ((MLX5_FLOW_ACTION_ESP_CREATE_LAST_SUPPORTED << 1) - 1)); 4301 if (err) 4302 return ERR_PTR(err); 4303 4304 flags = mlx5_ib_flow_action_flags_to_accel_xfrm_flags(action_flags); 4305 4306 /* We current only support a subset of the standard features. Only a 4307 * keymat of type AES_GCM, with icv_len == 16, iv_algo == SEQ and esn 4308 * (with overlap). Full offload mode isn't supported. 4309 */ 4310 if (!attr->keymat || attr->replay || attr->encap || 4311 attr->spi || attr->seq || attr->tfc_pad || 4312 attr->hard_limit_pkts || 4313 (attr->flags & ~(IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED | 4314 IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ENCRYPT))) 4315 return ERR_PTR(-EOPNOTSUPP); 4316 4317 if (attr->keymat->protocol != 4318 IB_UVERBS_FLOW_ACTION_ESP_KEYMAT_AES_GCM) 4319 return ERR_PTR(-EOPNOTSUPP); 4320 4321 aes_gcm = &attr->keymat->keymat.aes_gcm; 4322 4323 if (aes_gcm->icv_len != 16 || 4324 aes_gcm->iv_algo != IB_UVERBS_FLOW_ACTION_IV_ALGO_SEQ) 4325 return ERR_PTR(-EOPNOTSUPP); 4326 4327 action = kmalloc(sizeof(*action), GFP_KERNEL); 4328 if (!action) 4329 return ERR_PTR(-ENOMEM); 4330 4331 action->esp_aes_gcm.ib_flags = attr->flags; 4332 memcpy(&accel_attrs.keymat.aes_gcm.aes_key, &aes_gcm->aes_key, 4333 sizeof(accel_attrs.keymat.aes_gcm.aes_key)); 4334 accel_attrs.keymat.aes_gcm.key_len = aes_gcm->key_len * 8; 4335 memcpy(&accel_attrs.keymat.aes_gcm.salt, &aes_gcm->salt, 4336 sizeof(accel_attrs.keymat.aes_gcm.salt)); 4337 memcpy(&accel_attrs.keymat.aes_gcm.seq_iv, &aes_gcm->iv, 4338 sizeof(accel_attrs.keymat.aes_gcm.seq_iv)); 4339 accel_attrs.keymat.aes_gcm.icv_len = aes_gcm->icv_len * 8; 4340 accel_attrs.keymat.aes_gcm.iv_algo = MLX5_ACCEL_ESP_AES_GCM_IV_ALGO_SEQ; 4341 accel_attrs.keymat_type = MLX5_ACCEL_ESP_KEYMAT_AES_GCM; 4342 4343 accel_attrs.esn = attr->esn; 4344 if (attr->flags & IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED) 4345 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_TRIGGERED; 4346 if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW) 4347 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP; 4348 4349 if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ENCRYPT) 4350 accel_attrs.action |= MLX5_ACCEL_ESP_ACTION_ENCRYPT; 4351 4352 action->esp_aes_gcm.ctx = 4353 mlx5_accel_esp_create_xfrm(mdev->mdev, &accel_attrs, flags); 4354 if (IS_ERR(action->esp_aes_gcm.ctx)) { 4355 err = PTR_ERR(action->esp_aes_gcm.ctx); 4356 goto err_parse; 4357 } 4358 4359 action->esp_aes_gcm.ib_flags = attr->flags; 4360 4361 return &action->ib_action; 4362 4363 err_parse: 4364 kfree(action); 4365 return ERR_PTR(err); 4366 } 4367 4368 static int 4369 mlx5_ib_modify_flow_action_esp(struct ib_flow_action *action, 4370 const struct ib_flow_action_attrs_esp *attr, 4371 struct uverbs_attr_bundle *attrs) 4372 { 4373 struct mlx5_ib_flow_action *maction = to_mflow_act(action); 4374 struct mlx5_accel_esp_xfrm_attrs accel_attrs; 4375 int err = 0; 4376 4377 if (attr->keymat || attr->replay || attr->encap || 4378 attr->spi || attr->seq || attr->tfc_pad || 4379 attr->hard_limit_pkts || 4380 (attr->flags & ~(IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED | 4381 IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS | 4382 IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW))) 4383 return -EOPNOTSUPP; 4384 4385 /* Only the ESN value or the MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP can 4386 * be modified. 4387 */ 4388 if (!(maction->esp_aes_gcm.ib_flags & 4389 IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED) && 4390 attr->flags & (IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED | 4391 IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)) 4392 return -EINVAL; 4393 4394 memcpy(&accel_attrs, &maction->esp_aes_gcm.ctx->attrs, 4395 sizeof(accel_attrs)); 4396 4397 accel_attrs.esn = attr->esn; 4398 if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW) 4399 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP; 4400 else 4401 accel_attrs.flags &= ~MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP; 4402 4403 err = mlx5_accel_esp_modify_xfrm(maction->esp_aes_gcm.ctx, 4404 &accel_attrs); 4405 if (err) 4406 return err; 4407 4408 maction->esp_aes_gcm.ib_flags &= 4409 ~IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW; 4410 maction->esp_aes_gcm.ib_flags |= 4411 attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW; 4412 4413 return 0; 4414 } 4415 4416 static int mlx5_ib_destroy_flow_action(struct ib_flow_action *action) 4417 { 4418 struct mlx5_ib_flow_action *maction = to_mflow_act(action); 4419 4420 switch (action->type) { 4421 case IB_FLOW_ACTION_ESP: 4422 /* 4423 * We only support aes_gcm by now, so we implicitly know this is 4424 * the underline crypto. 4425 */ 4426 mlx5_accel_esp_destroy_xfrm(maction->esp_aes_gcm.ctx); 4427 break; 4428 case IB_FLOW_ACTION_UNSPECIFIED: 4429 mlx5_ib_destroy_flow_action_raw(maction); 4430 break; 4431 default: 4432 WARN_ON(true); 4433 break; 4434 } 4435 4436 kfree(maction); 4437 return 0; 4438 } 4439 4440 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 4441 { 4442 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 4443 struct mlx5_ib_qp *mqp = to_mqp(ibqp); 4444 int err; 4445 u16 uid; 4446 4447 uid = ibqp->pd ? 4448 to_mpd(ibqp->pd)->uid : 0; 4449 4450 if (mqp->flags & MLX5_IB_QP_UNDERLAY) { 4451 mlx5_ib_dbg(dev, "Attaching a multi cast group to underlay QP is not supported\n"); 4452 return -EOPNOTSUPP; 4453 } 4454 4455 err = mlx5_cmd_attach_mcg(dev->mdev, gid, ibqp->qp_num, uid); 4456 if (err) 4457 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n", 4458 ibqp->qp_num, gid->raw); 4459 4460 return err; 4461 } 4462 4463 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 4464 { 4465 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 4466 int err; 4467 u16 uid; 4468 4469 uid = ibqp->pd ? 4470 to_mpd(ibqp->pd)->uid : 0; 4471 err = mlx5_cmd_detach_mcg(dev->mdev, gid, ibqp->qp_num, uid); 4472 if (err) 4473 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n", 4474 ibqp->qp_num, gid->raw); 4475 4476 return err; 4477 } 4478 4479 static int init_node_data(struct mlx5_ib_dev *dev) 4480 { 4481 int err; 4482 4483 err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc); 4484 if (err) 4485 return err; 4486 4487 dev->mdev->rev_id = dev->mdev->pdev->revision; 4488 4489 return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid); 4490 } 4491 4492 static ssize_t fw_pages_show(struct device *device, 4493 struct device_attribute *attr, char *buf) 4494 { 4495 struct mlx5_ib_dev *dev = 4496 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 4497 4498 return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages); 4499 } 4500 static DEVICE_ATTR_RO(fw_pages); 4501 4502 static ssize_t reg_pages_show(struct device *device, 4503 struct device_attribute *attr, char *buf) 4504 { 4505 struct mlx5_ib_dev *dev = 4506 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 4507 4508 return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages)); 4509 } 4510 static DEVICE_ATTR_RO(reg_pages); 4511 4512 static ssize_t hca_type_show(struct device *device, 4513 struct device_attribute *attr, char *buf) 4514 { 4515 struct mlx5_ib_dev *dev = 4516 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 4517 4518 return sprintf(buf, "MT%d\n", dev->mdev->pdev->device); 4519 } 4520 static DEVICE_ATTR_RO(hca_type); 4521 4522 static ssize_t hw_rev_show(struct device *device, 4523 struct device_attribute *attr, char *buf) 4524 { 4525 struct mlx5_ib_dev *dev = 4526 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 4527 4528 return sprintf(buf, "%x\n", dev->mdev->rev_id); 4529 } 4530 static DEVICE_ATTR_RO(hw_rev); 4531 4532 static ssize_t board_id_show(struct device *device, 4533 struct device_attribute *attr, char *buf) 4534 { 4535 struct mlx5_ib_dev *dev = 4536 rdma_device_to_drv_device(device, struct mlx5_ib_dev, ib_dev); 4537 4538 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN, 4539 dev->mdev->board_id); 4540 } 4541 static DEVICE_ATTR_RO(board_id); 4542 4543 static struct attribute *mlx5_class_attributes[] = { 4544 &dev_attr_hw_rev.attr, 4545 &dev_attr_hca_type.attr, 4546 &dev_attr_board_id.attr, 4547 &dev_attr_fw_pages.attr, 4548 &dev_attr_reg_pages.attr, 4549 NULL, 4550 }; 4551 4552 static const struct attribute_group mlx5_attr_group = { 4553 .attrs = mlx5_class_attributes, 4554 }; 4555 4556 static void pkey_change_handler(struct work_struct *work) 4557 { 4558 struct mlx5_ib_port_resources *ports = 4559 container_of(work, struct mlx5_ib_port_resources, 4560 pkey_change_work); 4561 4562 mutex_lock(&ports->devr->mutex); 4563 mlx5_ib_gsi_pkey_change(ports->gsi); 4564 mutex_unlock(&ports->devr->mutex); 4565 } 4566 4567 static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev) 4568 { 4569 struct mlx5_ib_qp *mqp; 4570 struct mlx5_ib_cq *send_mcq, *recv_mcq; 4571 struct mlx5_core_cq *mcq; 4572 struct list_head cq_armed_list; 4573 unsigned long flags_qp; 4574 unsigned long flags_cq; 4575 unsigned long flags; 4576 4577 INIT_LIST_HEAD(&cq_armed_list); 4578 4579 /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ 4580 spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); 4581 list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { 4582 spin_lock_irqsave(&mqp->sq.lock, flags_qp); 4583 if (mqp->sq.tail != mqp->sq.head) { 4584 send_mcq = to_mcq(mqp->ibqp.send_cq); 4585 spin_lock_irqsave(&send_mcq->lock, flags_cq); 4586 if (send_mcq->mcq.comp && 4587 mqp->ibqp.send_cq->comp_handler) { 4588 if (!send_mcq->mcq.reset_notify_added) { 4589 send_mcq->mcq.reset_notify_added = 1; 4590 list_add_tail(&send_mcq->mcq.reset_notify, 4591 &cq_armed_list); 4592 } 4593 } 4594 spin_unlock_irqrestore(&send_mcq->lock, flags_cq); 4595 } 4596 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); 4597 spin_lock_irqsave(&mqp->rq.lock, flags_qp); 4598 /* no handling is needed for SRQ */ 4599 if (!mqp->ibqp.srq) { 4600 if (mqp->rq.tail != mqp->rq.head) { 4601 recv_mcq = to_mcq(mqp->ibqp.recv_cq); 4602 spin_lock_irqsave(&recv_mcq->lock, flags_cq); 4603 if (recv_mcq->mcq.comp && 4604 mqp->ibqp.recv_cq->comp_handler) { 4605 if (!recv_mcq->mcq.reset_notify_added) { 4606 recv_mcq->mcq.reset_notify_added = 1; 4607 list_add_tail(&recv_mcq->mcq.reset_notify, 4608 &cq_armed_list); 4609 } 4610 } 4611 spin_unlock_irqrestore(&recv_mcq->lock, 4612 flags_cq); 4613 } 4614 } 4615 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); 4616 } 4617 /*At that point all inflight post send were put to be executed as of we 4618 * lock/unlock above locks Now need to arm all involved CQs. 4619 */ 4620 list_for_each_entry(mcq, &cq_armed_list, reset_notify) { 4621 mcq->comp(mcq, NULL); 4622 } 4623 spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); 4624 } 4625 4626 static void delay_drop_handler(struct work_struct *work) 4627 { 4628 int err; 4629 struct mlx5_ib_delay_drop *delay_drop = 4630 container_of(work, struct mlx5_ib_delay_drop, 4631 delay_drop_work); 4632 4633 atomic_inc(&delay_drop->events_cnt); 4634 4635 mutex_lock(&delay_drop->lock); 4636 err = mlx5_core_set_delay_drop(delay_drop->dev, delay_drop->timeout); 4637 if (err) { 4638 mlx5_ib_warn(delay_drop->dev, "Failed to set delay drop, timeout=%u\n", 4639 delay_drop->timeout); 4640 delay_drop->activate = false; 4641 } 4642 mutex_unlock(&delay_drop->lock); 4643 } 4644 4645 static void handle_general_event(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe, 4646 struct ib_event *ibev) 4647 { 4648 u8 port = (eqe->data.port.port >> 4) & 0xf; 4649 4650 switch (eqe->sub_type) { 4651 case MLX5_GENERAL_SUBTYPE_DELAY_DROP_TIMEOUT: 4652 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) == 4653 IB_LINK_LAYER_ETHERNET) 4654 schedule_work(&ibdev->delay_drop.delay_drop_work); 4655 break; 4656 default: /* do nothing */ 4657 return; 4658 } 4659 } 4660 4661 static int handle_port_change(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe, 4662 struct ib_event *ibev) 4663 { 4664 u8 port = (eqe->data.port.port >> 4) & 0xf; 4665 4666 ibev->element.port_num = port; 4667 4668 switch (eqe->sub_type) { 4669 case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: 4670 case MLX5_PORT_CHANGE_SUBTYPE_DOWN: 4671 case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED: 4672 /* In RoCE, port up/down events are handled in 4673 * mlx5_netdev_event(). 4674 */ 4675 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) == 4676 IB_LINK_LAYER_ETHERNET) 4677 return -EINVAL; 4678 4679 ibev->event = (eqe->sub_type == MLX5_PORT_CHANGE_SUBTYPE_ACTIVE) ? 4680 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 4681 break; 4682 4683 case MLX5_PORT_CHANGE_SUBTYPE_LID: 4684 ibev->event = IB_EVENT_LID_CHANGE; 4685 break; 4686 4687 case MLX5_PORT_CHANGE_SUBTYPE_PKEY: 4688 ibev->event = IB_EVENT_PKEY_CHANGE; 4689 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work); 4690 break; 4691 4692 case MLX5_PORT_CHANGE_SUBTYPE_GUID: 4693 ibev->event = IB_EVENT_GID_CHANGE; 4694 break; 4695 4696 case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG: 4697 ibev->event = IB_EVENT_CLIENT_REREGISTER; 4698 break; 4699 default: 4700 return -EINVAL; 4701 } 4702 4703 return 0; 4704 } 4705 4706 static void mlx5_ib_handle_event(struct work_struct *_work) 4707 { 4708 struct mlx5_ib_event_work *work = 4709 container_of(_work, struct mlx5_ib_event_work, work); 4710 struct mlx5_ib_dev *ibdev; 4711 struct ib_event ibev; 4712 bool fatal = false; 4713 4714 if (work->is_slave) { 4715 ibdev = mlx5_ib_get_ibdev_from_mpi(work->mpi); 4716 if (!ibdev) 4717 goto out; 4718 } else { 4719 ibdev = work->dev; 4720 } 4721 4722 switch (work->event) { 4723 case MLX5_DEV_EVENT_SYS_ERROR: 4724 ibev.event = IB_EVENT_DEVICE_FATAL; 4725 mlx5_ib_handle_internal_error(ibdev); 4726 ibev.element.port_num = (u8)(unsigned long)work->param; 4727 fatal = true; 4728 break; 4729 case MLX5_EVENT_TYPE_PORT_CHANGE: 4730 if (handle_port_change(ibdev, work->param, &ibev)) 4731 goto out; 4732 break; 4733 case MLX5_EVENT_TYPE_GENERAL_EVENT: 4734 handle_general_event(ibdev, work->param, &ibev); 4735 /* fall through */ 4736 default: 4737 goto out; 4738 } 4739 4740 ibev.device = &ibdev->ib_dev; 4741 4742 if (!rdma_is_port_valid(&ibdev->ib_dev, ibev.element.port_num)) { 4743 mlx5_ib_warn(ibdev, "warning: event on port %d\n", ibev.element.port_num); 4744 goto out; 4745 } 4746 4747 if (ibdev->ib_active) 4748 ib_dispatch_event(&ibev); 4749 4750 if (fatal) 4751 ibdev->ib_active = false; 4752 out: 4753 kfree(work); 4754 } 4755 4756 static int mlx5_ib_event(struct notifier_block *nb, 4757 unsigned long event, void *param) 4758 { 4759 struct mlx5_ib_event_work *work; 4760 4761 work = kmalloc(sizeof(*work), GFP_ATOMIC); 4762 if (!work) 4763 return NOTIFY_DONE; 4764 4765 INIT_WORK(&work->work, mlx5_ib_handle_event); 4766 work->dev = container_of(nb, struct mlx5_ib_dev, mdev_events); 4767 work->is_slave = false; 4768 work->param = param; 4769 work->event = event; 4770 4771 queue_work(mlx5_ib_event_wq, &work->work); 4772 4773 return NOTIFY_OK; 4774 } 4775 4776 static int mlx5_ib_event_slave_port(struct notifier_block *nb, 4777 unsigned long event, void *param) 4778 { 4779 struct mlx5_ib_event_work *work; 4780 4781 work = kmalloc(sizeof(*work), GFP_ATOMIC); 4782 if (!work) 4783 return NOTIFY_DONE; 4784 4785 INIT_WORK(&work->work, mlx5_ib_handle_event); 4786 work->mpi = container_of(nb, struct mlx5_ib_multiport_info, mdev_events); 4787 work->is_slave = true; 4788 work->param = param; 4789 work->event = event; 4790 queue_work(mlx5_ib_event_wq, &work->work); 4791 4792 return NOTIFY_OK; 4793 } 4794 4795 static int set_has_smi_cap(struct mlx5_ib_dev *dev) 4796 { 4797 struct mlx5_hca_vport_context vport_ctx; 4798 int err; 4799 int port; 4800 4801 for (port = 1; port <= ARRAY_SIZE(dev->mdev->port_caps); port++) { 4802 dev->mdev->port_caps[port - 1].has_smi = false; 4803 if (MLX5_CAP_GEN(dev->mdev, port_type) == 4804 MLX5_CAP_PORT_TYPE_IB) { 4805 if (MLX5_CAP_GEN(dev->mdev, ib_virt)) { 4806 err = mlx5_query_hca_vport_context(dev->mdev, 0, 4807 port, 0, 4808 &vport_ctx); 4809 if (err) { 4810 mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n", 4811 port, err); 4812 return err; 4813 } 4814 dev->mdev->port_caps[port - 1].has_smi = 4815 vport_ctx.has_smi; 4816 } else { 4817 dev->mdev->port_caps[port - 1].has_smi = true; 4818 } 4819 } 4820 } 4821 return 0; 4822 } 4823 4824 static void get_ext_port_caps(struct mlx5_ib_dev *dev) 4825 { 4826 int port; 4827 4828 for (port = 1; port <= dev->num_ports; port++) 4829 mlx5_query_ext_port_caps(dev, port); 4830 } 4831 4832 static int __get_port_caps(struct mlx5_ib_dev *dev, u8 port) 4833 { 4834 struct ib_device_attr *dprops = NULL; 4835 struct ib_port_attr *pprops = NULL; 4836 int err = -ENOMEM; 4837 4838 pprops = kzalloc(sizeof(*pprops), GFP_KERNEL); 4839 if (!pprops) 4840 goto out; 4841 4842 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL); 4843 if (!dprops) 4844 goto out; 4845 4846 err = mlx5_ib_query_device(&dev->ib_dev, dprops, NULL); 4847 if (err) { 4848 mlx5_ib_warn(dev, "query_device failed %d\n", err); 4849 goto out; 4850 } 4851 4852 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops); 4853 if (err) { 4854 mlx5_ib_warn(dev, "query_port %d failed %d\n", 4855 port, err); 4856 goto out; 4857 } 4858 4859 dev->mdev->port_caps[port - 1].pkey_table_len = 4860 dprops->max_pkeys; 4861 dev->mdev->port_caps[port - 1].gid_table_len = 4862 pprops->gid_tbl_len; 4863 mlx5_ib_dbg(dev, "port %d: pkey_table_len %d, gid_table_len %d\n", 4864 port, dprops->max_pkeys, pprops->gid_tbl_len); 4865 4866 out: 4867 kfree(pprops); 4868 kfree(dprops); 4869 4870 return err; 4871 } 4872 4873 static int get_port_caps(struct mlx5_ib_dev *dev, u8 port) 4874 { 4875 /* For representors use port 1, is this is the only native 4876 * port 4877 */ 4878 if (dev->is_rep) 4879 return __get_port_caps(dev, 1); 4880 return __get_port_caps(dev, port); 4881 } 4882 4883 static void destroy_umrc_res(struct mlx5_ib_dev *dev) 4884 { 4885 int err; 4886 4887 err = mlx5_mr_cache_cleanup(dev); 4888 if (err) 4889 mlx5_ib_warn(dev, "mr cache cleanup failed\n"); 4890 4891 if (dev->umrc.qp) 4892 mlx5_ib_destroy_qp(dev->umrc.qp, NULL); 4893 if (dev->umrc.cq) 4894 ib_free_cq(dev->umrc.cq); 4895 if (dev->umrc.pd) 4896 ib_dealloc_pd(dev->umrc.pd); 4897 } 4898 4899 enum { 4900 MAX_UMR_WR = 128, 4901 }; 4902 4903 static int create_umr_res(struct mlx5_ib_dev *dev) 4904 { 4905 struct ib_qp_init_attr *init_attr = NULL; 4906 struct ib_qp_attr *attr = NULL; 4907 struct ib_pd *pd; 4908 struct ib_cq *cq; 4909 struct ib_qp *qp; 4910 int ret; 4911 4912 attr = kzalloc(sizeof(*attr), GFP_KERNEL); 4913 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); 4914 if (!attr || !init_attr) { 4915 ret = -ENOMEM; 4916 goto error_0; 4917 } 4918 4919 pd = ib_alloc_pd(&dev->ib_dev, 0); 4920 if (IS_ERR(pd)) { 4921 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n"); 4922 ret = PTR_ERR(pd); 4923 goto error_0; 4924 } 4925 4926 cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ); 4927 if (IS_ERR(cq)) { 4928 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n"); 4929 ret = PTR_ERR(cq); 4930 goto error_2; 4931 } 4932 4933 init_attr->send_cq = cq; 4934 init_attr->recv_cq = cq; 4935 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR; 4936 init_attr->cap.max_send_wr = MAX_UMR_WR; 4937 init_attr->cap.max_send_sge = 1; 4938 init_attr->qp_type = MLX5_IB_QPT_REG_UMR; 4939 init_attr->port_num = 1; 4940 qp = mlx5_ib_create_qp(pd, init_attr, NULL); 4941 if (IS_ERR(qp)) { 4942 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n"); 4943 ret = PTR_ERR(qp); 4944 goto error_3; 4945 } 4946 qp->device = &dev->ib_dev; 4947 qp->real_qp = qp; 4948 qp->uobject = NULL; 4949 qp->qp_type = MLX5_IB_QPT_REG_UMR; 4950 qp->send_cq = init_attr->send_cq; 4951 qp->recv_cq = init_attr->recv_cq; 4952 4953 attr->qp_state = IB_QPS_INIT; 4954 attr->port_num = 1; 4955 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX | 4956 IB_QP_PORT, NULL); 4957 if (ret) { 4958 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n"); 4959 goto error_4; 4960 } 4961 4962 memset(attr, 0, sizeof(*attr)); 4963 attr->qp_state = IB_QPS_RTR; 4964 attr->path_mtu = IB_MTU_256; 4965 4966 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 4967 if (ret) { 4968 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n"); 4969 goto error_4; 4970 } 4971 4972 memset(attr, 0, sizeof(*attr)); 4973 attr->qp_state = IB_QPS_RTS; 4974 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); 4975 if (ret) { 4976 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n"); 4977 goto error_4; 4978 } 4979 4980 dev->umrc.qp = qp; 4981 dev->umrc.cq = cq; 4982 dev->umrc.pd = pd; 4983 4984 sema_init(&dev->umrc.sem, MAX_UMR_WR); 4985 ret = mlx5_mr_cache_init(dev); 4986 if (ret) { 4987 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret); 4988 goto error_4; 4989 } 4990 4991 kfree(attr); 4992 kfree(init_attr); 4993 4994 return 0; 4995 4996 error_4: 4997 mlx5_ib_destroy_qp(qp, NULL); 4998 dev->umrc.qp = NULL; 4999 5000 error_3: 5001 ib_free_cq(cq); 5002 dev->umrc.cq = NULL; 5003 5004 error_2: 5005 ib_dealloc_pd(pd); 5006 dev->umrc.pd = NULL; 5007 5008 error_0: 5009 kfree(attr); 5010 kfree(init_attr); 5011 return ret; 5012 } 5013 5014 static u8 mlx5_get_umr_fence(u8 umr_fence_cap) 5015 { 5016 switch (umr_fence_cap) { 5017 case MLX5_CAP_UMR_FENCE_NONE: 5018 return MLX5_FENCE_MODE_NONE; 5019 case MLX5_CAP_UMR_FENCE_SMALL: 5020 return MLX5_FENCE_MODE_INITIATOR_SMALL; 5021 default: 5022 return MLX5_FENCE_MODE_STRONG_ORDERING; 5023 } 5024 } 5025 5026 static int create_dev_resources(struct mlx5_ib_resources *devr) 5027 { 5028 struct ib_srq_init_attr attr; 5029 struct mlx5_ib_dev *dev; 5030 struct ib_device *ibdev; 5031 struct ib_cq_init_attr cq_attr = {.cqe = 1}; 5032 int port; 5033 int ret = 0; 5034 5035 dev = container_of(devr, struct mlx5_ib_dev, devr); 5036 ibdev = &dev->ib_dev; 5037 5038 mutex_init(&devr->mutex); 5039 5040 devr->p0 = rdma_zalloc_drv_obj(ibdev, ib_pd); 5041 if (!devr->p0) 5042 return -ENOMEM; 5043 5044 devr->p0->device = ibdev; 5045 devr->p0->uobject = NULL; 5046 atomic_set(&devr->p0->usecnt, 0); 5047 5048 ret = mlx5_ib_alloc_pd(devr->p0, NULL); 5049 if (ret) 5050 goto error0; 5051 5052 devr->c0 = rdma_zalloc_drv_obj(ibdev, ib_cq); 5053 if (!devr->c0) { 5054 ret = -ENOMEM; 5055 goto error1; 5056 } 5057 5058 devr->c0->device = &dev->ib_dev; 5059 atomic_set(&devr->c0->usecnt, 0); 5060 5061 ret = mlx5_ib_create_cq(devr->c0, &cq_attr, NULL); 5062 if (ret) 5063 goto err_create_cq; 5064 5065 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL); 5066 if (IS_ERR(devr->x0)) { 5067 ret = PTR_ERR(devr->x0); 5068 goto error2; 5069 } 5070 devr->x0->device = &dev->ib_dev; 5071 devr->x0->inode = NULL; 5072 atomic_set(&devr->x0->usecnt, 0); 5073 mutex_init(&devr->x0->tgt_qp_mutex); 5074 INIT_LIST_HEAD(&devr->x0->tgt_qp_list); 5075 5076 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL); 5077 if (IS_ERR(devr->x1)) { 5078 ret = PTR_ERR(devr->x1); 5079 goto error3; 5080 } 5081 devr->x1->device = &dev->ib_dev; 5082 devr->x1->inode = NULL; 5083 atomic_set(&devr->x1->usecnt, 0); 5084 mutex_init(&devr->x1->tgt_qp_mutex); 5085 INIT_LIST_HEAD(&devr->x1->tgt_qp_list); 5086 5087 memset(&attr, 0, sizeof(attr)); 5088 attr.attr.max_sge = 1; 5089 attr.attr.max_wr = 1; 5090 attr.srq_type = IB_SRQT_XRC; 5091 attr.ext.cq = devr->c0; 5092 attr.ext.xrc.xrcd = devr->x0; 5093 5094 devr->s0 = rdma_zalloc_drv_obj(ibdev, ib_srq); 5095 if (!devr->s0) { 5096 ret = -ENOMEM; 5097 goto error4; 5098 } 5099 5100 devr->s0->device = &dev->ib_dev; 5101 devr->s0->pd = devr->p0; 5102 devr->s0->srq_type = IB_SRQT_XRC; 5103 devr->s0->ext.xrc.xrcd = devr->x0; 5104 devr->s0->ext.cq = devr->c0; 5105 ret = mlx5_ib_create_srq(devr->s0, &attr, NULL); 5106 if (ret) 5107 goto err_create; 5108 5109 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt); 5110 atomic_inc(&devr->s0->ext.cq->usecnt); 5111 atomic_inc(&devr->p0->usecnt); 5112 atomic_set(&devr->s0->usecnt, 0); 5113 5114 memset(&attr, 0, sizeof(attr)); 5115 attr.attr.max_sge = 1; 5116 attr.attr.max_wr = 1; 5117 attr.srq_type = IB_SRQT_BASIC; 5118 devr->s1 = rdma_zalloc_drv_obj(ibdev, ib_srq); 5119 if (!devr->s1) { 5120 ret = -ENOMEM; 5121 goto error5; 5122 } 5123 5124 devr->s1->device = &dev->ib_dev; 5125 devr->s1->pd = devr->p0; 5126 devr->s1->srq_type = IB_SRQT_BASIC; 5127 devr->s1->ext.cq = devr->c0; 5128 5129 ret = mlx5_ib_create_srq(devr->s1, &attr, NULL); 5130 if (ret) 5131 goto error6; 5132 5133 atomic_inc(&devr->p0->usecnt); 5134 atomic_set(&devr->s1->usecnt, 0); 5135 5136 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) { 5137 INIT_WORK(&devr->ports[port].pkey_change_work, 5138 pkey_change_handler); 5139 devr->ports[port].devr = devr; 5140 } 5141 5142 return 0; 5143 5144 error6: 5145 kfree(devr->s1); 5146 error5: 5147 mlx5_ib_destroy_srq(devr->s0, NULL); 5148 err_create: 5149 kfree(devr->s0); 5150 error4: 5151 mlx5_ib_dealloc_xrcd(devr->x1, NULL); 5152 error3: 5153 mlx5_ib_dealloc_xrcd(devr->x0, NULL); 5154 error2: 5155 mlx5_ib_destroy_cq(devr->c0, NULL); 5156 err_create_cq: 5157 kfree(devr->c0); 5158 error1: 5159 mlx5_ib_dealloc_pd(devr->p0, NULL); 5160 error0: 5161 kfree(devr->p0); 5162 return ret; 5163 } 5164 5165 static void destroy_dev_resources(struct mlx5_ib_resources *devr) 5166 { 5167 int port; 5168 5169 mlx5_ib_destroy_srq(devr->s1, NULL); 5170 kfree(devr->s1); 5171 mlx5_ib_destroy_srq(devr->s0, NULL); 5172 kfree(devr->s0); 5173 mlx5_ib_dealloc_xrcd(devr->x0, NULL); 5174 mlx5_ib_dealloc_xrcd(devr->x1, NULL); 5175 mlx5_ib_destroy_cq(devr->c0, NULL); 5176 kfree(devr->c0); 5177 mlx5_ib_dealloc_pd(devr->p0, NULL); 5178 kfree(devr->p0); 5179 5180 /* Make sure no change P_Key work items are still executing */ 5181 for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) 5182 cancel_work_sync(&devr->ports[port].pkey_change_work); 5183 } 5184 5185 static u32 get_core_cap_flags(struct ib_device *ibdev, 5186 struct mlx5_hca_vport_context *rep) 5187 { 5188 struct mlx5_ib_dev *dev = to_mdev(ibdev); 5189 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1); 5190 u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type); 5191 u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version); 5192 bool raw_support = !mlx5_core_mp_enabled(dev->mdev); 5193 u32 ret = 0; 5194 5195 if (rep->grh_required) 5196 ret |= RDMA_CORE_CAP_IB_GRH_REQUIRED; 5197 5198 if (ll == IB_LINK_LAYER_INFINIBAND) 5199 return ret | RDMA_CORE_PORT_IBA_IB; 5200 5201 if (raw_support) 5202 ret |= RDMA_CORE_PORT_RAW_PACKET; 5203 5204 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP)) 5205 return ret; 5206 5207 if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP)) 5208 return ret; 5209 5210 if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP) 5211 ret |= RDMA_CORE_PORT_IBA_ROCE; 5212 5213 if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP) 5214 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 5215 5216 return ret; 5217 } 5218 5219 static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num, 5220 struct ib_port_immutable *immutable) 5221 { 5222 struct ib_port_attr attr; 5223 struct mlx5_ib_dev *dev = to_mdev(ibdev); 5224 enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num); 5225 struct mlx5_hca_vport_context rep = {0}; 5226 int err; 5227 5228 err = ib_query_port(ibdev, port_num, &attr); 5229 if (err) 5230 return err; 5231 5232 if (ll == IB_LINK_LAYER_INFINIBAND) { 5233 err = mlx5_query_hca_vport_context(dev->mdev, 0, port_num, 0, 5234 &rep); 5235 if (err) 5236 return err; 5237 } 5238 5239 immutable->pkey_tbl_len = attr.pkey_tbl_len; 5240 immutable->gid_tbl_len = attr.gid_tbl_len; 5241 immutable->core_cap_flags = get_core_cap_flags(ibdev, &rep); 5242 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 5243 5244 return 0; 5245 } 5246 5247 static int mlx5_port_rep_immutable(struct ib_device *ibdev, u8 port_num, 5248 struct ib_port_immutable *immutable) 5249 { 5250 struct ib_port_attr attr; 5251 int err; 5252 5253 immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET; 5254 5255 err = ib_query_port(ibdev, port_num, &attr); 5256 if (err) 5257 return err; 5258 5259 immutable->pkey_tbl_len = attr.pkey_tbl_len; 5260 immutable->gid_tbl_len = attr.gid_tbl_len; 5261 immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET; 5262 5263 return 0; 5264 } 5265 5266 static void get_dev_fw_str(struct ib_device *ibdev, char *str) 5267 { 5268 struct mlx5_ib_dev *dev = 5269 container_of(ibdev, struct mlx5_ib_dev, ib_dev); 5270 snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%04d", 5271 fw_rev_maj(dev->mdev), fw_rev_min(dev->mdev), 5272 fw_rev_sub(dev->mdev)); 5273 } 5274 5275 static int mlx5_eth_lag_init(struct mlx5_ib_dev *dev) 5276 { 5277 struct mlx5_core_dev *mdev = dev->mdev; 5278 struct mlx5_flow_namespace *ns = mlx5_get_flow_namespace(mdev, 5279 MLX5_FLOW_NAMESPACE_LAG); 5280 struct mlx5_flow_table *ft; 5281 int err; 5282 5283 if (!ns || !mlx5_lag_is_roce(mdev)) 5284 return 0; 5285 5286 err = mlx5_cmd_create_vport_lag(mdev); 5287 if (err) 5288 return err; 5289 5290 ft = mlx5_create_lag_demux_flow_table(ns, 0, 0); 5291 if (IS_ERR(ft)) { 5292 err = PTR_ERR(ft); 5293 goto err_destroy_vport_lag; 5294 } 5295 5296 dev->flow_db->lag_demux_ft = ft; 5297 dev->lag_active = true; 5298 return 0; 5299 5300 err_destroy_vport_lag: 5301 mlx5_cmd_destroy_vport_lag(mdev); 5302 return err; 5303 } 5304 5305 static void mlx5_eth_lag_cleanup(struct mlx5_ib_dev *dev) 5306 { 5307 struct mlx5_core_dev *mdev = dev->mdev; 5308 5309 if (dev->lag_active) { 5310 dev->lag_active = false; 5311 5312 mlx5_destroy_flow_table(dev->flow_db->lag_demux_ft); 5313 dev->flow_db->lag_demux_ft = NULL; 5314 5315 mlx5_cmd_destroy_vport_lag(mdev); 5316 } 5317 } 5318 5319 static int mlx5_add_netdev_notifier(struct mlx5_ib_dev *dev, u8 port_num) 5320 { 5321 int err; 5322 5323 dev->port[port_num].roce.nb.notifier_call = mlx5_netdev_event; 5324 err = register_netdevice_notifier(&dev->port[port_num].roce.nb); 5325 if (err) { 5326 dev->port[port_num].roce.nb.notifier_call = NULL; 5327 return err; 5328 } 5329 5330 return 0; 5331 } 5332 5333 static void mlx5_remove_netdev_notifier(struct mlx5_ib_dev *dev, u8 port_num) 5334 { 5335 if (dev->port[port_num].roce.nb.notifier_call) { 5336 unregister_netdevice_notifier(&dev->port[port_num].roce.nb); 5337 dev->port[port_num].roce.nb.notifier_call = NULL; 5338 } 5339 } 5340 5341 static int mlx5_enable_eth(struct mlx5_ib_dev *dev) 5342 { 5343 int err; 5344 5345 err = mlx5_nic_vport_enable_roce(dev->mdev); 5346 if (err) 5347 return err; 5348 5349 err = mlx5_eth_lag_init(dev); 5350 if (err) 5351 goto err_disable_roce; 5352 5353 return 0; 5354 5355 err_disable_roce: 5356 mlx5_nic_vport_disable_roce(dev->mdev); 5357 5358 return err; 5359 } 5360 5361 static void mlx5_disable_eth(struct mlx5_ib_dev *dev) 5362 { 5363 mlx5_eth_lag_cleanup(dev); 5364 mlx5_nic_vport_disable_roce(dev->mdev); 5365 } 5366 5367 struct mlx5_ib_counter { 5368 const char *name; 5369 size_t offset; 5370 }; 5371 5372 #define INIT_Q_COUNTER(_name) \ 5373 { .name = #_name, .offset = MLX5_BYTE_OFF(query_q_counter_out, _name)} 5374 5375 static const struct mlx5_ib_counter basic_q_cnts[] = { 5376 INIT_Q_COUNTER(rx_write_requests), 5377 INIT_Q_COUNTER(rx_read_requests), 5378 INIT_Q_COUNTER(rx_atomic_requests), 5379 INIT_Q_COUNTER(out_of_buffer), 5380 }; 5381 5382 static const struct mlx5_ib_counter out_of_seq_q_cnts[] = { 5383 INIT_Q_COUNTER(out_of_sequence), 5384 }; 5385 5386 static const struct mlx5_ib_counter retrans_q_cnts[] = { 5387 INIT_Q_COUNTER(duplicate_request), 5388 INIT_Q_COUNTER(rnr_nak_retry_err), 5389 INIT_Q_COUNTER(packet_seq_err), 5390 INIT_Q_COUNTER(implied_nak_seq_err), 5391 INIT_Q_COUNTER(local_ack_timeout_err), 5392 }; 5393 5394 #define INIT_CONG_COUNTER(_name) \ 5395 { .name = #_name, .offset = \ 5396 MLX5_BYTE_OFF(query_cong_statistics_out, _name ## _high)} 5397 5398 static const struct mlx5_ib_counter cong_cnts[] = { 5399 INIT_CONG_COUNTER(rp_cnp_ignored), 5400 INIT_CONG_COUNTER(rp_cnp_handled), 5401 INIT_CONG_COUNTER(np_ecn_marked_roce_packets), 5402 INIT_CONG_COUNTER(np_cnp_sent), 5403 }; 5404 5405 static const struct mlx5_ib_counter extended_err_cnts[] = { 5406 INIT_Q_COUNTER(resp_local_length_error), 5407 INIT_Q_COUNTER(resp_cqe_error), 5408 INIT_Q_COUNTER(req_cqe_error), 5409 INIT_Q_COUNTER(req_remote_invalid_request), 5410 INIT_Q_COUNTER(req_remote_access_errors), 5411 INIT_Q_COUNTER(resp_remote_access_errors), 5412 INIT_Q_COUNTER(resp_cqe_flush_error), 5413 INIT_Q_COUNTER(req_cqe_flush_error), 5414 }; 5415 5416 static const struct mlx5_ib_counter roce_accl_cnts[] = { 5417 INIT_Q_COUNTER(roce_adp_retrans), 5418 INIT_Q_COUNTER(roce_adp_retrans_to), 5419 INIT_Q_COUNTER(roce_slow_restart), 5420 INIT_Q_COUNTER(roce_slow_restart_cnps), 5421 INIT_Q_COUNTER(roce_slow_restart_trans), 5422 }; 5423 5424 #define INIT_EXT_PPCNT_COUNTER(_name) \ 5425 { .name = #_name, .offset = \ 5426 MLX5_BYTE_OFF(ppcnt_reg, \ 5427 counter_set.eth_extended_cntrs_grp_data_layout._name##_high)} 5428 5429 static const struct mlx5_ib_counter ext_ppcnt_cnts[] = { 5430 INIT_EXT_PPCNT_COUNTER(rx_icrc_encapsulated), 5431 }; 5432 5433 static bool is_mdev_switchdev_mode(const struct mlx5_core_dev *mdev) 5434 { 5435 return MLX5_ESWITCH_MANAGER(mdev) && 5436 mlx5_ib_eswitch_mode(mdev->priv.eswitch) == 5437 MLX5_ESWITCH_OFFLOADS; 5438 } 5439 5440 static void mlx5_ib_dealloc_counters(struct mlx5_ib_dev *dev) 5441 { 5442 u32 in[MLX5_ST_SZ_DW(dealloc_q_counter_in)] = {}; 5443 int num_cnt_ports; 5444 int i; 5445 5446 num_cnt_ports = is_mdev_switchdev_mode(dev->mdev) ? 1 : dev->num_ports; 5447 5448 MLX5_SET(dealloc_q_counter_in, in, opcode, 5449 MLX5_CMD_OP_DEALLOC_Q_COUNTER); 5450 5451 for (i = 0; i < num_cnt_ports; i++) { 5452 if (dev->port[i].cnts.set_id) { 5453 MLX5_SET(dealloc_q_counter_in, in, counter_set_id, 5454 dev->port[i].cnts.set_id); 5455 mlx5_cmd_exec_in(dev->mdev, dealloc_q_counter, in); 5456 } 5457 kfree(dev->port[i].cnts.names); 5458 kfree(dev->port[i].cnts.offsets); 5459 } 5460 } 5461 5462 static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev, 5463 struct mlx5_ib_counters *cnts) 5464 { 5465 u32 num_counters; 5466 5467 num_counters = ARRAY_SIZE(basic_q_cnts); 5468 5469 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt)) 5470 num_counters += ARRAY_SIZE(out_of_seq_q_cnts); 5471 5472 if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) 5473 num_counters += ARRAY_SIZE(retrans_q_cnts); 5474 5475 if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters)) 5476 num_counters += ARRAY_SIZE(extended_err_cnts); 5477 5478 if (MLX5_CAP_GEN(dev->mdev, roce_accl)) 5479 num_counters += ARRAY_SIZE(roce_accl_cnts); 5480 5481 cnts->num_q_counters = num_counters; 5482 5483 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) { 5484 cnts->num_cong_counters = ARRAY_SIZE(cong_cnts); 5485 num_counters += ARRAY_SIZE(cong_cnts); 5486 } 5487 if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) { 5488 cnts->num_ext_ppcnt_counters = ARRAY_SIZE(ext_ppcnt_cnts); 5489 num_counters += ARRAY_SIZE(ext_ppcnt_cnts); 5490 } 5491 cnts->names = kcalloc(num_counters, sizeof(cnts->names), GFP_KERNEL); 5492 if (!cnts->names) 5493 return -ENOMEM; 5494 5495 cnts->offsets = kcalloc(num_counters, 5496 sizeof(cnts->offsets), GFP_KERNEL); 5497 if (!cnts->offsets) 5498 goto err_names; 5499 5500 return 0; 5501 5502 err_names: 5503 kfree(cnts->names); 5504 cnts->names = NULL; 5505 return -ENOMEM; 5506 } 5507 5508 static void mlx5_ib_fill_counters(struct mlx5_ib_dev *dev, 5509 const char **names, 5510 size_t *offsets) 5511 { 5512 int i; 5513 int j = 0; 5514 5515 for (i = 0; i < ARRAY_SIZE(basic_q_cnts); i++, j++) { 5516 names[j] = basic_q_cnts[i].name; 5517 offsets[j] = basic_q_cnts[i].offset; 5518 } 5519 5520 if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt)) { 5521 for (i = 0; i < ARRAY_SIZE(out_of_seq_q_cnts); i++, j++) { 5522 names[j] = out_of_seq_q_cnts[i].name; 5523 offsets[j] = out_of_seq_q_cnts[i].offset; 5524 } 5525 } 5526 5527 if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) { 5528 for (i = 0; i < ARRAY_SIZE(retrans_q_cnts); i++, j++) { 5529 names[j] = retrans_q_cnts[i].name; 5530 offsets[j] = retrans_q_cnts[i].offset; 5531 } 5532 } 5533 5534 if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters)) { 5535 for (i = 0; i < ARRAY_SIZE(extended_err_cnts); i++, j++) { 5536 names[j] = extended_err_cnts[i].name; 5537 offsets[j] = extended_err_cnts[i].offset; 5538 } 5539 } 5540 5541 if (MLX5_CAP_GEN(dev->mdev, roce_accl)) { 5542 for (i = 0; i < ARRAY_SIZE(roce_accl_cnts); i++, j++) { 5543 names[j] = roce_accl_cnts[i].name; 5544 offsets[j] = roce_accl_cnts[i].offset; 5545 } 5546 } 5547 5548 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) { 5549 for (i = 0; i < ARRAY_SIZE(cong_cnts); i++, j++) { 5550 names[j] = cong_cnts[i].name; 5551 offsets[j] = cong_cnts[i].offset; 5552 } 5553 } 5554 5555 if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) { 5556 for (i = 0; i < ARRAY_SIZE(ext_ppcnt_cnts); i++, j++) { 5557 names[j] = ext_ppcnt_cnts[i].name; 5558 offsets[j] = ext_ppcnt_cnts[i].offset; 5559 } 5560 } 5561 } 5562 5563 static int mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev) 5564 { 5565 u32 out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {}; 5566 u32 in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {}; 5567 int num_cnt_ports; 5568 int err = 0; 5569 int i; 5570 bool is_shared; 5571 5572 MLX5_SET(alloc_q_counter_in, in, opcode, MLX5_CMD_OP_ALLOC_Q_COUNTER); 5573 is_shared = MLX5_CAP_GEN(dev->mdev, log_max_uctx) != 0; 5574 num_cnt_ports = is_mdev_switchdev_mode(dev->mdev) ? 1 : dev->num_ports; 5575 5576 for (i = 0; i < num_cnt_ports; i++) { 5577 err = __mlx5_ib_alloc_counters(dev, &dev->port[i].cnts); 5578 if (err) 5579 goto err_alloc; 5580 5581 mlx5_ib_fill_counters(dev, dev->port[i].cnts.names, 5582 dev->port[i].cnts.offsets); 5583 5584 MLX5_SET(alloc_q_counter_in, in, uid, 5585 is_shared ? MLX5_SHARED_RESOURCE_UID : 0); 5586 5587 err = mlx5_cmd_exec_inout(dev->mdev, alloc_q_counter, in, out); 5588 if (err) { 5589 mlx5_ib_warn(dev, 5590 "couldn't allocate queue counter for port %d, err %d\n", 5591 i + 1, err); 5592 goto err_alloc; 5593 } 5594 5595 dev->port[i].cnts.set_id = 5596 MLX5_GET(alloc_q_counter_out, out, counter_set_id); 5597 } 5598 return 0; 5599 5600 err_alloc: 5601 mlx5_ib_dealloc_counters(dev); 5602 return err; 5603 } 5604 5605 static const struct mlx5_ib_counters *get_counters(struct mlx5_ib_dev *dev, 5606 u8 port_num) 5607 { 5608 return is_mdev_switchdev_mode(dev->mdev) ? &dev->port[0].cnts : 5609 &dev->port[port_num].cnts; 5610 } 5611 5612 /** 5613 * mlx5_ib_get_counters_id - Returns counters id to use for device+port 5614 * @dev: Pointer to mlx5 IB device 5615 * @port_num: Zero based port number 5616 * 5617 * mlx5_ib_get_counters_id() Returns counters set id to use for given 5618 * device port combination in switchdev and non switchdev mode of the 5619 * parent device. 5620 */ 5621 u16 mlx5_ib_get_counters_id(struct mlx5_ib_dev *dev, u8 port_num) 5622 { 5623 const struct mlx5_ib_counters *cnts = get_counters(dev, port_num); 5624 5625 return cnts->set_id; 5626 } 5627 5628 static struct rdma_hw_stats *mlx5_ib_alloc_hw_stats(struct ib_device *ibdev, 5629 u8 port_num) 5630 { 5631 struct mlx5_ib_dev *dev = to_mdev(ibdev); 5632 const struct mlx5_ib_counters *cnts; 5633 bool is_switchdev = is_mdev_switchdev_mode(dev->mdev); 5634 5635 if ((is_switchdev && port_num) || (!is_switchdev && !port_num)) 5636 return NULL; 5637 5638 cnts = get_counters(dev, port_num - 1); 5639 5640 return rdma_alloc_hw_stats_struct(cnts->names, 5641 cnts->num_q_counters + 5642 cnts->num_cong_counters + 5643 cnts->num_ext_ppcnt_counters, 5644 RDMA_HW_STATS_DEFAULT_LIFESPAN); 5645 } 5646 5647 static int mlx5_ib_query_q_counters(struct mlx5_core_dev *mdev, 5648 const struct mlx5_ib_counters *cnts, 5649 struct rdma_hw_stats *stats, 5650 u16 set_id) 5651 { 5652 u32 out[MLX5_ST_SZ_DW(query_q_counter_out)] = {}; 5653 u32 in[MLX5_ST_SZ_DW(query_q_counter_in)] = {}; 5654 __be32 val; 5655 int ret, i; 5656 5657 MLX5_SET(query_q_counter_in, in, opcode, MLX5_CMD_OP_QUERY_Q_COUNTER); 5658 MLX5_SET(query_q_counter_in, in, counter_set_id, set_id); 5659 ret = mlx5_cmd_exec_inout(mdev, query_q_counter, in, out); 5660 if (ret) 5661 return ret; 5662 5663 for (i = 0; i < cnts->num_q_counters; i++) { 5664 val = *(__be32 *)((void *)out + cnts->offsets[i]); 5665 stats->value[i] = (u64)be32_to_cpu(val); 5666 } 5667 5668 return 0; 5669 } 5670 5671 static int mlx5_ib_query_ext_ppcnt_counters(struct mlx5_ib_dev *dev, 5672 const struct mlx5_ib_counters *cnts, 5673 struct rdma_hw_stats *stats) 5674 { 5675 int offset = cnts->num_q_counters + cnts->num_cong_counters; 5676 int sz = MLX5_ST_SZ_BYTES(ppcnt_reg); 5677 int ret, i; 5678 void *out; 5679 5680 out = kvzalloc(sz, GFP_KERNEL); 5681 if (!out) 5682 return -ENOMEM; 5683 5684 ret = mlx5_cmd_query_ext_ppcnt_counters(dev->mdev, out); 5685 if (ret) 5686 goto free; 5687 5688 for (i = 0; i < cnts->num_ext_ppcnt_counters; i++) 5689 stats->value[i + offset] = 5690 be64_to_cpup((__be64 *)(out + 5691 cnts->offsets[i + offset])); 5692 free: 5693 kvfree(out); 5694 return ret; 5695 } 5696 5697 static int mlx5_ib_get_hw_stats(struct ib_device *ibdev, 5698 struct rdma_hw_stats *stats, 5699 u8 port_num, int index) 5700 { 5701 struct mlx5_ib_dev *dev = to_mdev(ibdev); 5702 const struct mlx5_ib_counters *cnts = get_counters(dev, port_num - 1); 5703 struct mlx5_core_dev *mdev; 5704 int ret, num_counters; 5705 u8 mdev_port_num; 5706 5707 if (!stats) 5708 return -EINVAL; 5709 5710 num_counters = cnts->num_q_counters + 5711 cnts->num_cong_counters + 5712 cnts->num_ext_ppcnt_counters; 5713 5714 /* q_counters are per IB device, query the master mdev */ 5715 ret = mlx5_ib_query_q_counters(dev->mdev, cnts, stats, cnts->set_id); 5716 if (ret) 5717 return ret; 5718 5719 if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) { 5720 ret = mlx5_ib_query_ext_ppcnt_counters(dev, cnts, stats); 5721 if (ret) 5722 return ret; 5723 } 5724 5725 if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) { 5726 mdev = mlx5_ib_get_native_port_mdev(dev, port_num, 5727 &mdev_port_num); 5728 if (!mdev) { 5729 /* If port is not affiliated yet, its in down state 5730 * which doesn't have any counters yet, so it would be 5731 * zero. So no need to read from the HCA. 5732 */ 5733 goto done; 5734 } 5735 ret = mlx5_lag_query_cong_counters(dev->mdev, 5736 stats->value + 5737 cnts->num_q_counters, 5738 cnts->num_cong_counters, 5739 cnts->offsets + 5740 cnts->num_q_counters); 5741 5742 mlx5_ib_put_native_port_mdev(dev, port_num); 5743 if (ret) 5744 return ret; 5745 } 5746 5747 done: 5748 return num_counters; 5749 } 5750 5751 static struct rdma_hw_stats * 5752 mlx5_ib_counter_alloc_stats(struct rdma_counter *counter) 5753 { 5754 struct mlx5_ib_dev *dev = to_mdev(counter->device); 5755 const struct mlx5_ib_counters *cnts = 5756 get_counters(dev, counter->port - 1); 5757 5758 return rdma_alloc_hw_stats_struct(cnts->names, 5759 cnts->num_q_counters + 5760 cnts->num_cong_counters + 5761 cnts->num_ext_ppcnt_counters, 5762 RDMA_HW_STATS_DEFAULT_LIFESPAN); 5763 } 5764 5765 static int mlx5_ib_counter_update_stats(struct rdma_counter *counter) 5766 { 5767 struct mlx5_ib_dev *dev = to_mdev(counter->device); 5768 const struct mlx5_ib_counters *cnts = 5769 get_counters(dev, counter->port - 1); 5770 5771 return mlx5_ib_query_q_counters(dev->mdev, cnts, 5772 counter->stats, counter->id); 5773 } 5774 5775 static int mlx5_ib_counter_dealloc(struct rdma_counter *counter) 5776 { 5777 struct mlx5_ib_dev *dev = to_mdev(counter->device); 5778 u32 in[MLX5_ST_SZ_DW(dealloc_q_counter_in)] = {}; 5779 5780 if (!counter->id) 5781 return 0; 5782 5783 MLX5_SET(dealloc_q_counter_in, in, opcode, 5784 MLX5_CMD_OP_DEALLOC_Q_COUNTER); 5785 MLX5_SET(dealloc_q_counter_in, in, counter_set_id, counter->id); 5786 return mlx5_cmd_exec_in(dev->mdev, dealloc_q_counter, in); 5787 } 5788 5789 static int mlx5_ib_counter_bind_qp(struct rdma_counter *counter, 5790 struct ib_qp *qp) 5791 { 5792 struct mlx5_ib_dev *dev = to_mdev(qp->device); 5793 int err; 5794 5795 if (!counter->id) { 5796 u32 out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {}; 5797 u32 in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {}; 5798 5799 MLX5_SET(alloc_q_counter_in, in, opcode, 5800 MLX5_CMD_OP_ALLOC_Q_COUNTER); 5801 MLX5_SET(alloc_q_counter_in, in, uid, MLX5_SHARED_RESOURCE_UID); 5802 err = mlx5_cmd_exec_inout(dev->mdev, alloc_q_counter, in, out); 5803 if (err) 5804 return err; 5805 counter->id = 5806 MLX5_GET(alloc_q_counter_out, out, counter_set_id); 5807 } 5808 5809 err = mlx5_ib_qp_set_counter(qp, counter); 5810 if (err) 5811 goto fail_set_counter; 5812 5813 return 0; 5814 5815 fail_set_counter: 5816 mlx5_ib_counter_dealloc(counter); 5817 counter->id = 0; 5818 5819 return err; 5820 } 5821 5822 static int mlx5_ib_counter_unbind_qp(struct ib_qp *qp) 5823 { 5824 return mlx5_ib_qp_set_counter(qp, NULL); 5825 } 5826 5827 static int mlx5_ib_rn_get_params(struct ib_device *device, u8 port_num, 5828 enum rdma_netdev_t type, 5829 struct rdma_netdev_alloc_params *params) 5830 { 5831 if (type != RDMA_NETDEV_IPOIB) 5832 return -EOPNOTSUPP; 5833 5834 return mlx5_rdma_rn_get_params(to_mdev(device)->mdev, device, params); 5835 } 5836 5837 static void delay_drop_debugfs_cleanup(struct mlx5_ib_dev *dev) 5838 { 5839 if (!dev->delay_drop.dir_debugfs) 5840 return; 5841 debugfs_remove_recursive(dev->delay_drop.dir_debugfs); 5842 dev->delay_drop.dir_debugfs = NULL; 5843 } 5844 5845 static void cancel_delay_drop(struct mlx5_ib_dev *dev) 5846 { 5847 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP)) 5848 return; 5849 5850 cancel_work_sync(&dev->delay_drop.delay_drop_work); 5851 delay_drop_debugfs_cleanup(dev); 5852 } 5853 5854 static ssize_t delay_drop_timeout_read(struct file *filp, char __user *buf, 5855 size_t count, loff_t *pos) 5856 { 5857 struct mlx5_ib_delay_drop *delay_drop = filp->private_data; 5858 char lbuf[20]; 5859 int len; 5860 5861 len = snprintf(lbuf, sizeof(lbuf), "%u\n", delay_drop->timeout); 5862 return simple_read_from_buffer(buf, count, pos, lbuf, len); 5863 } 5864 5865 static ssize_t delay_drop_timeout_write(struct file *filp, const char __user *buf, 5866 size_t count, loff_t *pos) 5867 { 5868 struct mlx5_ib_delay_drop *delay_drop = filp->private_data; 5869 u32 timeout; 5870 u32 var; 5871 5872 if (kstrtouint_from_user(buf, count, 0, &var)) 5873 return -EFAULT; 5874 5875 timeout = min_t(u32, roundup(var, 100), MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 5876 1000); 5877 if (timeout != var) 5878 mlx5_ib_dbg(delay_drop->dev, "Round delay drop timeout to %u usec\n", 5879 timeout); 5880 5881 delay_drop->timeout = timeout; 5882 5883 return count; 5884 } 5885 5886 static const struct file_operations fops_delay_drop_timeout = { 5887 .owner = THIS_MODULE, 5888 .open = simple_open, 5889 .write = delay_drop_timeout_write, 5890 .read = delay_drop_timeout_read, 5891 }; 5892 5893 static void delay_drop_debugfs_init(struct mlx5_ib_dev *dev) 5894 { 5895 struct dentry *root; 5896 5897 if (!mlx5_debugfs_root) 5898 return; 5899 5900 root = debugfs_create_dir("delay_drop", dev->mdev->priv.dbg_root); 5901 dev->delay_drop.dir_debugfs = root; 5902 5903 debugfs_create_atomic_t("num_timeout_events", 0400, root, 5904 &dev->delay_drop.events_cnt); 5905 debugfs_create_atomic_t("num_rqs", 0400, root, 5906 &dev->delay_drop.rqs_cnt); 5907 debugfs_create_file("timeout", 0600, root, &dev->delay_drop, 5908 &fops_delay_drop_timeout); 5909 } 5910 5911 static void init_delay_drop(struct mlx5_ib_dev *dev) 5912 { 5913 if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP)) 5914 return; 5915 5916 mutex_init(&dev->delay_drop.lock); 5917 dev->delay_drop.dev = dev; 5918 dev->delay_drop.activate = false; 5919 dev->delay_drop.timeout = MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 1000; 5920 INIT_WORK(&dev->delay_drop.delay_drop_work, delay_drop_handler); 5921 atomic_set(&dev->delay_drop.rqs_cnt, 0); 5922 atomic_set(&dev->delay_drop.events_cnt, 0); 5923 5924 delay_drop_debugfs_init(dev); 5925 } 5926 5927 static void mlx5_ib_unbind_slave_port(struct mlx5_ib_dev *ibdev, 5928 struct mlx5_ib_multiport_info *mpi) 5929 { 5930 u8 port_num = mlx5_core_native_port_num(mpi->mdev) - 1; 5931 struct mlx5_ib_port *port = &ibdev->port[port_num]; 5932 int comps; 5933 int err; 5934 int i; 5935 5936 lockdep_assert_held(&mlx5_ib_multiport_mutex); 5937 5938 mlx5_ib_cleanup_cong_debugfs(ibdev, port_num); 5939 5940 spin_lock(&port->mp.mpi_lock); 5941 if (!mpi->ibdev) { 5942 spin_unlock(&port->mp.mpi_lock); 5943 return; 5944 } 5945 5946 mpi->ibdev = NULL; 5947 5948 spin_unlock(&port->mp.mpi_lock); 5949 if (mpi->mdev_events.notifier_call) 5950 mlx5_notifier_unregister(mpi->mdev, &mpi->mdev_events); 5951 mpi->mdev_events.notifier_call = NULL; 5952 mlx5_remove_netdev_notifier(ibdev, port_num); 5953 spin_lock(&port->mp.mpi_lock); 5954 5955 comps = mpi->mdev_refcnt; 5956 if (comps) { 5957 mpi->unaffiliate = true; 5958 init_completion(&mpi->unref_comp); 5959 spin_unlock(&port->mp.mpi_lock); 5960 5961 for (i = 0; i < comps; i++) 5962 wait_for_completion(&mpi->unref_comp); 5963 5964 spin_lock(&port->mp.mpi_lock); 5965 mpi->unaffiliate = false; 5966 } 5967 5968 port->mp.mpi = NULL; 5969 5970 list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list); 5971 5972 spin_unlock(&port->mp.mpi_lock); 5973 5974 err = mlx5_nic_vport_unaffiliate_multiport(mpi->mdev); 5975 5976 mlx5_ib_dbg(ibdev, "unaffiliated port %d\n", port_num + 1); 5977 /* Log an error, still needed to cleanup the pointers and add 5978 * it back to the list. 5979 */ 5980 if (err) 5981 mlx5_ib_err(ibdev, "Failed to unaffiliate port %u\n", 5982 port_num + 1); 5983 5984 ibdev->port[port_num].roce.last_port_state = IB_PORT_DOWN; 5985 } 5986 5987 static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev, 5988 struct mlx5_ib_multiport_info *mpi) 5989 { 5990 u8 port_num = mlx5_core_native_port_num(mpi->mdev) - 1; 5991 int err; 5992 5993 lockdep_assert_held(&mlx5_ib_multiport_mutex); 5994 5995 spin_lock(&ibdev->port[port_num].mp.mpi_lock); 5996 if (ibdev->port[port_num].mp.mpi) { 5997 mlx5_ib_dbg(ibdev, "port %d already affiliated.\n", 5998 port_num + 1); 5999 spin_unlock(&ibdev->port[port_num].mp.mpi_lock); 6000 return false; 6001 } 6002 6003 ibdev->port[port_num].mp.mpi = mpi; 6004 mpi->ibdev = ibdev; 6005 mpi->mdev_events.notifier_call = NULL; 6006 spin_unlock(&ibdev->port[port_num].mp.mpi_lock); 6007 6008 err = mlx5_nic_vport_affiliate_multiport(ibdev->mdev, mpi->mdev); 6009 if (err) 6010 goto unbind; 6011 6012 err = get_port_caps(ibdev, mlx5_core_native_port_num(mpi->mdev)); 6013 if (err) 6014 goto unbind; 6015 6016 err = mlx5_add_netdev_notifier(ibdev, port_num); 6017 if (err) { 6018 mlx5_ib_err(ibdev, "failed adding netdev notifier for port %u\n", 6019 port_num + 1); 6020 goto unbind; 6021 } 6022 6023 mpi->mdev_events.notifier_call = mlx5_ib_event_slave_port; 6024 mlx5_notifier_register(mpi->mdev, &mpi->mdev_events); 6025 6026 mlx5_ib_init_cong_debugfs(ibdev, port_num); 6027 6028 return true; 6029 6030 unbind: 6031 mlx5_ib_unbind_slave_port(ibdev, mpi); 6032 return false; 6033 } 6034 6035 static int mlx5_ib_init_multiport_master(struct mlx5_ib_dev *dev) 6036 { 6037 int port_num = mlx5_core_native_port_num(dev->mdev) - 1; 6038 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 6039 port_num + 1); 6040 struct mlx5_ib_multiport_info *mpi; 6041 int err; 6042 int i; 6043 6044 if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 6045 return 0; 6046 6047 err = mlx5_query_nic_vport_system_image_guid(dev->mdev, 6048 &dev->sys_image_guid); 6049 if (err) 6050 return err; 6051 6052 err = mlx5_nic_vport_enable_roce(dev->mdev); 6053 if (err) 6054 return err; 6055 6056 mutex_lock(&mlx5_ib_multiport_mutex); 6057 for (i = 0; i < dev->num_ports; i++) { 6058 bool bound = false; 6059 6060 /* build a stub multiport info struct for the native port. */ 6061 if (i == port_num) { 6062 mpi = kzalloc(sizeof(*mpi), GFP_KERNEL); 6063 if (!mpi) { 6064 mutex_unlock(&mlx5_ib_multiport_mutex); 6065 mlx5_nic_vport_disable_roce(dev->mdev); 6066 return -ENOMEM; 6067 } 6068 6069 mpi->is_master = true; 6070 mpi->mdev = dev->mdev; 6071 mpi->sys_image_guid = dev->sys_image_guid; 6072 dev->port[i].mp.mpi = mpi; 6073 mpi->ibdev = dev; 6074 mpi = NULL; 6075 continue; 6076 } 6077 6078 list_for_each_entry(mpi, &mlx5_ib_unaffiliated_port_list, 6079 list) { 6080 if (dev->sys_image_guid == mpi->sys_image_guid && 6081 (mlx5_core_native_port_num(mpi->mdev) - 1) == i) { 6082 bound = mlx5_ib_bind_slave_port(dev, mpi); 6083 } 6084 6085 if (bound) { 6086 dev_dbg(mpi->mdev->device, 6087 "removing port from unaffiliated list.\n"); 6088 mlx5_ib_dbg(dev, "port %d bound\n", i + 1); 6089 list_del(&mpi->list); 6090 break; 6091 } 6092 } 6093 if (!bound) { 6094 get_port_caps(dev, i + 1); 6095 mlx5_ib_dbg(dev, "no free port found for port %d\n", 6096 i + 1); 6097 } 6098 } 6099 6100 list_add_tail(&dev->ib_dev_list, &mlx5_ib_dev_list); 6101 mutex_unlock(&mlx5_ib_multiport_mutex); 6102 return err; 6103 } 6104 6105 static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev) 6106 { 6107 int port_num = mlx5_core_native_port_num(dev->mdev) - 1; 6108 enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 6109 port_num + 1); 6110 int i; 6111 6112 if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET) 6113 return; 6114 6115 mutex_lock(&mlx5_ib_multiport_mutex); 6116 for (i = 0; i < dev->num_ports; i++) { 6117 if (dev->port[i].mp.mpi) { 6118 /* Destroy the native port stub */ 6119 if (i == port_num) { 6120 kfree(dev->port[i].mp.mpi); 6121 dev->port[i].mp.mpi = NULL; 6122 } else { 6123 mlx5_ib_dbg(dev, "unbinding port_num: %d\n", i + 1); 6124 mlx5_ib_unbind_slave_port(dev, dev->port[i].mp.mpi); 6125 } 6126 } 6127 } 6128 6129 mlx5_ib_dbg(dev, "removing from devlist\n"); 6130 list_del(&dev->ib_dev_list); 6131 mutex_unlock(&mlx5_ib_multiport_mutex); 6132 6133 mlx5_nic_vport_disable_roce(dev->mdev); 6134 } 6135 6136 static int mmap_obj_cleanup(struct ib_uobject *uobject, 6137 enum rdma_remove_reason why, 6138 struct uverbs_attr_bundle *attrs) 6139 { 6140 struct mlx5_user_mmap_entry *obj = uobject->object; 6141 6142 rdma_user_mmap_entry_remove(&obj->rdma_entry); 6143 return 0; 6144 } 6145 6146 static int mlx5_rdma_user_mmap_entry_insert(struct mlx5_ib_ucontext *c, 6147 struct mlx5_user_mmap_entry *entry, 6148 size_t length) 6149 { 6150 return rdma_user_mmap_entry_insert_range( 6151 &c->ibucontext, &entry->rdma_entry, length, 6152 (MLX5_IB_MMAP_OFFSET_START << 16), 6153 ((MLX5_IB_MMAP_OFFSET_END << 16) + (1UL << 16) - 1)); 6154 } 6155 6156 static struct mlx5_user_mmap_entry * 6157 alloc_var_entry(struct mlx5_ib_ucontext *c) 6158 { 6159 struct mlx5_user_mmap_entry *entry; 6160 struct mlx5_var_table *var_table; 6161 u32 page_idx; 6162 int err; 6163 6164 var_table = &to_mdev(c->ibucontext.device)->var_table; 6165 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 6166 if (!entry) 6167 return ERR_PTR(-ENOMEM); 6168 6169 mutex_lock(&var_table->bitmap_lock); 6170 page_idx = find_first_zero_bit(var_table->bitmap, 6171 var_table->num_var_hw_entries); 6172 if (page_idx >= var_table->num_var_hw_entries) { 6173 err = -ENOSPC; 6174 mutex_unlock(&var_table->bitmap_lock); 6175 goto end; 6176 } 6177 6178 set_bit(page_idx, var_table->bitmap); 6179 mutex_unlock(&var_table->bitmap_lock); 6180 6181 entry->address = var_table->hw_start_addr + 6182 (page_idx * var_table->stride_size); 6183 entry->page_idx = page_idx; 6184 entry->mmap_flag = MLX5_IB_MMAP_TYPE_VAR; 6185 6186 err = mlx5_rdma_user_mmap_entry_insert(c, entry, 6187 var_table->stride_size); 6188 if (err) 6189 goto err_insert; 6190 6191 return entry; 6192 6193 err_insert: 6194 mutex_lock(&var_table->bitmap_lock); 6195 clear_bit(page_idx, var_table->bitmap); 6196 mutex_unlock(&var_table->bitmap_lock); 6197 end: 6198 kfree(entry); 6199 return ERR_PTR(err); 6200 } 6201 6202 static int UVERBS_HANDLER(MLX5_IB_METHOD_VAR_OBJ_ALLOC)( 6203 struct uverbs_attr_bundle *attrs) 6204 { 6205 struct ib_uobject *uobj = uverbs_attr_get_uobject( 6206 attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE); 6207 struct mlx5_ib_ucontext *c; 6208 struct mlx5_user_mmap_entry *entry; 6209 u64 mmap_offset; 6210 u32 length; 6211 int err; 6212 6213 c = to_mucontext(ib_uverbs_get_ucontext(attrs)); 6214 if (IS_ERR(c)) 6215 return PTR_ERR(c); 6216 6217 entry = alloc_var_entry(c); 6218 if (IS_ERR(entry)) 6219 return PTR_ERR(entry); 6220 6221 mmap_offset = mlx5_entry_to_mmap_offset(entry); 6222 length = entry->rdma_entry.npages * PAGE_SIZE; 6223 uobj->object = entry; 6224 6225 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET, 6226 &mmap_offset, sizeof(mmap_offset)); 6227 if (err) 6228 goto err; 6229 6230 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID, 6231 &entry->page_idx, sizeof(entry->page_idx)); 6232 if (err) 6233 goto err; 6234 6235 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH, 6236 &length, sizeof(length)); 6237 if (err) 6238 goto err; 6239 6240 return 0; 6241 6242 err: 6243 rdma_user_mmap_entry_remove(&entry->rdma_entry); 6244 return err; 6245 } 6246 6247 DECLARE_UVERBS_NAMED_METHOD( 6248 MLX5_IB_METHOD_VAR_OBJ_ALLOC, 6249 UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE, 6250 MLX5_IB_OBJECT_VAR, 6251 UVERBS_ACCESS_NEW, 6252 UA_MANDATORY), 6253 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID, 6254 UVERBS_ATTR_TYPE(u32), 6255 UA_MANDATORY), 6256 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH, 6257 UVERBS_ATTR_TYPE(u32), 6258 UA_MANDATORY), 6259 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET, 6260 UVERBS_ATTR_TYPE(u64), 6261 UA_MANDATORY)); 6262 6263 DECLARE_UVERBS_NAMED_METHOD_DESTROY( 6264 MLX5_IB_METHOD_VAR_OBJ_DESTROY, 6265 UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_DESTROY_HANDLE, 6266 MLX5_IB_OBJECT_VAR, 6267 UVERBS_ACCESS_DESTROY, 6268 UA_MANDATORY)); 6269 6270 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_VAR, 6271 UVERBS_TYPE_ALLOC_IDR(mmap_obj_cleanup), 6272 &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_ALLOC), 6273 &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_DESTROY)); 6274 6275 static bool var_is_supported(struct ib_device *device) 6276 { 6277 struct mlx5_ib_dev *dev = to_mdev(device); 6278 6279 return (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 6280 MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q); 6281 } 6282 6283 static struct mlx5_user_mmap_entry * 6284 alloc_uar_entry(struct mlx5_ib_ucontext *c, 6285 enum mlx5_ib_uapi_uar_alloc_type alloc_type) 6286 { 6287 struct mlx5_user_mmap_entry *entry; 6288 struct mlx5_ib_dev *dev; 6289 u32 uar_index; 6290 int err; 6291 6292 entry = kzalloc(sizeof(*entry), GFP_KERNEL); 6293 if (!entry) 6294 return ERR_PTR(-ENOMEM); 6295 6296 dev = to_mdev(c->ibucontext.device); 6297 err = mlx5_cmd_alloc_uar(dev->mdev, &uar_index); 6298 if (err) 6299 goto end; 6300 6301 entry->page_idx = uar_index; 6302 entry->address = uar_index2paddress(dev, uar_index); 6303 if (alloc_type == MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF) 6304 entry->mmap_flag = MLX5_IB_MMAP_TYPE_UAR_WC; 6305 else 6306 entry->mmap_flag = MLX5_IB_MMAP_TYPE_UAR_NC; 6307 6308 err = mlx5_rdma_user_mmap_entry_insert(c, entry, PAGE_SIZE); 6309 if (err) 6310 goto err_insert; 6311 6312 return entry; 6313 6314 err_insert: 6315 mlx5_cmd_free_uar(dev->mdev, uar_index); 6316 end: 6317 kfree(entry); 6318 return ERR_PTR(err); 6319 } 6320 6321 static int UVERBS_HANDLER(MLX5_IB_METHOD_UAR_OBJ_ALLOC)( 6322 struct uverbs_attr_bundle *attrs) 6323 { 6324 struct ib_uobject *uobj = uverbs_attr_get_uobject( 6325 attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE); 6326 enum mlx5_ib_uapi_uar_alloc_type alloc_type; 6327 struct mlx5_ib_ucontext *c; 6328 struct mlx5_user_mmap_entry *entry; 6329 u64 mmap_offset; 6330 u32 length; 6331 int err; 6332 6333 c = to_mucontext(ib_uverbs_get_ucontext(attrs)); 6334 if (IS_ERR(c)) 6335 return PTR_ERR(c); 6336 6337 err = uverbs_get_const(&alloc_type, attrs, 6338 MLX5_IB_ATTR_UAR_OBJ_ALLOC_TYPE); 6339 if (err) 6340 return err; 6341 6342 if (alloc_type != MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF && 6343 alloc_type != MLX5_IB_UAPI_UAR_ALLOC_TYPE_NC) 6344 return -EOPNOTSUPP; 6345 6346 if (!to_mdev(c->ibucontext.device)->wc_support && 6347 alloc_type == MLX5_IB_UAPI_UAR_ALLOC_TYPE_BF) 6348 return -EOPNOTSUPP; 6349 6350 entry = alloc_uar_entry(c, alloc_type); 6351 if (IS_ERR(entry)) 6352 return PTR_ERR(entry); 6353 6354 mmap_offset = mlx5_entry_to_mmap_offset(entry); 6355 length = entry->rdma_entry.npages * PAGE_SIZE; 6356 uobj->object = entry; 6357 6358 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_OFFSET, 6359 &mmap_offset, sizeof(mmap_offset)); 6360 if (err) 6361 goto err; 6362 6363 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_PAGE_ID, 6364 &entry->page_idx, sizeof(entry->page_idx)); 6365 if (err) 6366 goto err; 6367 6368 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_LENGTH, 6369 &length, sizeof(length)); 6370 if (err) 6371 goto err; 6372 6373 return 0; 6374 6375 err: 6376 rdma_user_mmap_entry_remove(&entry->rdma_entry); 6377 return err; 6378 } 6379 6380 DECLARE_UVERBS_NAMED_METHOD( 6381 MLX5_IB_METHOD_UAR_OBJ_ALLOC, 6382 UVERBS_ATTR_IDR(MLX5_IB_ATTR_UAR_OBJ_ALLOC_HANDLE, 6383 MLX5_IB_OBJECT_UAR, 6384 UVERBS_ACCESS_NEW, 6385 UA_MANDATORY), 6386 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_UAR_OBJ_ALLOC_TYPE, 6387 enum mlx5_ib_uapi_uar_alloc_type, 6388 UA_MANDATORY), 6389 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_PAGE_ID, 6390 UVERBS_ATTR_TYPE(u32), 6391 UA_MANDATORY), 6392 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_LENGTH, 6393 UVERBS_ATTR_TYPE(u32), 6394 UA_MANDATORY), 6395 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_UAR_OBJ_ALLOC_MMAP_OFFSET, 6396 UVERBS_ATTR_TYPE(u64), 6397 UA_MANDATORY)); 6398 6399 DECLARE_UVERBS_NAMED_METHOD_DESTROY( 6400 MLX5_IB_METHOD_UAR_OBJ_DESTROY, 6401 UVERBS_ATTR_IDR(MLX5_IB_ATTR_UAR_OBJ_DESTROY_HANDLE, 6402 MLX5_IB_OBJECT_UAR, 6403 UVERBS_ACCESS_DESTROY, 6404 UA_MANDATORY)); 6405 6406 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_UAR, 6407 UVERBS_TYPE_ALLOC_IDR(mmap_obj_cleanup), 6408 &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_ALLOC), 6409 &UVERBS_METHOD(MLX5_IB_METHOD_UAR_OBJ_DESTROY)); 6410 6411 ADD_UVERBS_ATTRIBUTES_SIMPLE( 6412 mlx5_ib_dm, 6413 UVERBS_OBJECT_DM, 6414 UVERBS_METHOD_DM_ALLOC, 6415 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, 6416 UVERBS_ATTR_TYPE(u64), 6417 UA_MANDATORY), 6418 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX, 6419 UVERBS_ATTR_TYPE(u16), 6420 UA_OPTIONAL), 6421 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE, 6422 enum mlx5_ib_uapi_dm_type, 6423 UA_OPTIONAL)); 6424 6425 ADD_UVERBS_ATTRIBUTES_SIMPLE( 6426 mlx5_ib_flow_action, 6427 UVERBS_OBJECT_FLOW_ACTION, 6428 UVERBS_METHOD_FLOW_ACTION_ESP_CREATE, 6429 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_ACTION_FLAGS, 6430 enum mlx5_ib_uapi_flow_action_flags)); 6431 6432 static const struct uapi_definition mlx5_ib_defs[] = { 6433 UAPI_DEF_CHAIN(mlx5_ib_devx_defs), 6434 UAPI_DEF_CHAIN(mlx5_ib_flow_defs), 6435 UAPI_DEF_CHAIN(mlx5_ib_qos_defs), 6436 6437 UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION, 6438 &mlx5_ib_flow_action), 6439 UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DM, &mlx5_ib_dm), 6440 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_VAR, 6441 UAPI_DEF_IS_OBJ_SUPPORTED(var_is_supported)), 6442 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_UAR), 6443 {} 6444 }; 6445 6446 static int mlx5_ib_read_counters(struct ib_counters *counters, 6447 struct ib_counters_read_attr *read_attr, 6448 struct uverbs_attr_bundle *attrs) 6449 { 6450 struct mlx5_ib_mcounters *mcounters = to_mcounters(counters); 6451 struct mlx5_read_counters_attr mread_attr = {}; 6452 struct mlx5_ib_flow_counters_desc *desc; 6453 int ret, i; 6454 6455 mutex_lock(&mcounters->mcntrs_mutex); 6456 if (mcounters->cntrs_max_index > read_attr->ncounters) { 6457 ret = -EINVAL; 6458 goto err_bound; 6459 } 6460 6461 mread_attr.out = kcalloc(mcounters->counters_num, sizeof(u64), 6462 GFP_KERNEL); 6463 if (!mread_attr.out) { 6464 ret = -ENOMEM; 6465 goto err_bound; 6466 } 6467 6468 mread_attr.hw_cntrs_hndl = mcounters->hw_cntrs_hndl; 6469 mread_attr.flags = read_attr->flags; 6470 ret = mcounters->read_counters(counters->device, &mread_attr); 6471 if (ret) 6472 goto err_read; 6473 6474 /* do the pass over the counters data array to assign according to the 6475 * descriptions and indexing pairs 6476 */ 6477 desc = mcounters->counters_data; 6478 for (i = 0; i < mcounters->ncounters; i++) 6479 read_attr->counters_buff[desc[i].index] += mread_attr.out[desc[i].description]; 6480 6481 err_read: 6482 kfree(mread_attr.out); 6483 err_bound: 6484 mutex_unlock(&mcounters->mcntrs_mutex); 6485 return ret; 6486 } 6487 6488 static int mlx5_ib_destroy_counters(struct ib_counters *counters) 6489 { 6490 struct mlx5_ib_mcounters *mcounters = to_mcounters(counters); 6491 6492 counters_clear_description(counters); 6493 if (mcounters->hw_cntrs_hndl) 6494 mlx5_fc_destroy(to_mdev(counters->device)->mdev, 6495 mcounters->hw_cntrs_hndl); 6496 6497 kfree(mcounters); 6498 6499 return 0; 6500 } 6501 6502 static struct ib_counters *mlx5_ib_create_counters(struct ib_device *device, 6503 struct uverbs_attr_bundle *attrs) 6504 { 6505 struct mlx5_ib_mcounters *mcounters; 6506 6507 mcounters = kzalloc(sizeof(*mcounters), GFP_KERNEL); 6508 if (!mcounters) 6509 return ERR_PTR(-ENOMEM); 6510 6511 mutex_init(&mcounters->mcntrs_mutex); 6512 6513 return &mcounters->ibcntrs; 6514 } 6515 6516 static void mlx5_ib_stage_init_cleanup(struct mlx5_ib_dev *dev) 6517 { 6518 mlx5_ib_cleanup_multiport_master(dev); 6519 WARN_ON(!xa_empty(&dev->odp_mkeys)); 6520 cleanup_srcu_struct(&dev->odp_srcu); 6521 6522 WARN_ON(!xa_empty(&dev->sig_mrs)); 6523 WARN_ON(!bitmap_empty(dev->dm.memic_alloc_pages, MLX5_MAX_MEMIC_PAGES)); 6524 } 6525 6526 static int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev) 6527 { 6528 struct mlx5_core_dev *mdev = dev->mdev; 6529 int err; 6530 int i; 6531 6532 for (i = 0; i < dev->num_ports; i++) { 6533 spin_lock_init(&dev->port[i].mp.mpi_lock); 6534 rwlock_init(&dev->port[i].roce.netdev_lock); 6535 dev->port[i].roce.dev = dev; 6536 dev->port[i].roce.native_port_num = i + 1; 6537 dev->port[i].roce.last_port_state = IB_PORT_DOWN; 6538 } 6539 6540 mlx5_ib_internal_fill_odp_caps(dev); 6541 6542 err = mlx5_ib_init_multiport_master(dev); 6543 if (err) 6544 return err; 6545 6546 err = set_has_smi_cap(dev); 6547 if (err) 6548 return err; 6549 6550 if (!mlx5_core_mp_enabled(mdev)) { 6551 for (i = 1; i <= dev->num_ports; i++) { 6552 err = get_port_caps(dev, i); 6553 if (err) 6554 break; 6555 } 6556 } else { 6557 err = get_port_caps(dev, mlx5_core_native_port_num(mdev)); 6558 } 6559 if (err) 6560 goto err_mp; 6561 6562 if (mlx5_use_mad_ifc(dev)) 6563 get_ext_port_caps(dev); 6564 6565 dev->ib_dev.node_type = RDMA_NODE_IB_CA; 6566 dev->ib_dev.local_dma_lkey = 0 /* not supported for now */; 6567 dev->ib_dev.phys_port_cnt = dev->num_ports; 6568 dev->ib_dev.num_comp_vectors = mlx5_comp_vectors_count(mdev); 6569 dev->ib_dev.dev.parent = mdev->device; 6570 6571 mutex_init(&dev->cap_mask_mutex); 6572 INIT_LIST_HEAD(&dev->qp_list); 6573 spin_lock_init(&dev->reset_flow_resource_lock); 6574 xa_init(&dev->odp_mkeys); 6575 xa_init(&dev->sig_mrs); 6576 atomic_set(&dev->mkey_var, 0); 6577 6578 spin_lock_init(&dev->dm.lock); 6579 dev->dm.dev = mdev; 6580 6581 err = init_srcu_struct(&dev->odp_srcu); 6582 if (err) 6583 goto err_mp; 6584 6585 return 0; 6586 6587 err_mp: 6588 mlx5_ib_cleanup_multiport_master(dev); 6589 6590 return -ENOMEM; 6591 } 6592 6593 static int mlx5_ib_stage_flow_db_init(struct mlx5_ib_dev *dev) 6594 { 6595 dev->flow_db = kzalloc(sizeof(*dev->flow_db), GFP_KERNEL); 6596 6597 if (!dev->flow_db) 6598 return -ENOMEM; 6599 6600 mutex_init(&dev->flow_db->lock); 6601 6602 return 0; 6603 } 6604 6605 static void mlx5_ib_stage_flow_db_cleanup(struct mlx5_ib_dev *dev) 6606 { 6607 kfree(dev->flow_db); 6608 } 6609 6610 static const struct ib_device_ops mlx5_ib_dev_ops = { 6611 .owner = THIS_MODULE, 6612 .driver_id = RDMA_DRIVER_MLX5, 6613 .uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION, 6614 6615 .add_gid = mlx5_ib_add_gid, 6616 .alloc_mr = mlx5_ib_alloc_mr, 6617 .alloc_mr_integrity = mlx5_ib_alloc_mr_integrity, 6618 .alloc_pd = mlx5_ib_alloc_pd, 6619 .alloc_ucontext = mlx5_ib_alloc_ucontext, 6620 .attach_mcast = mlx5_ib_mcg_attach, 6621 .check_mr_status = mlx5_ib_check_mr_status, 6622 .create_ah = mlx5_ib_create_ah, 6623 .create_counters = mlx5_ib_create_counters, 6624 .create_cq = mlx5_ib_create_cq, 6625 .create_flow = mlx5_ib_create_flow, 6626 .create_qp = mlx5_ib_create_qp, 6627 .create_srq = mlx5_ib_create_srq, 6628 .dealloc_pd = mlx5_ib_dealloc_pd, 6629 .dealloc_ucontext = mlx5_ib_dealloc_ucontext, 6630 .del_gid = mlx5_ib_del_gid, 6631 .dereg_mr = mlx5_ib_dereg_mr, 6632 .destroy_ah = mlx5_ib_destroy_ah, 6633 .destroy_counters = mlx5_ib_destroy_counters, 6634 .destroy_cq = mlx5_ib_destroy_cq, 6635 .destroy_flow = mlx5_ib_destroy_flow, 6636 .destroy_flow_action = mlx5_ib_destroy_flow_action, 6637 .destroy_qp = mlx5_ib_destroy_qp, 6638 .destroy_srq = mlx5_ib_destroy_srq, 6639 .detach_mcast = mlx5_ib_mcg_detach, 6640 .disassociate_ucontext = mlx5_ib_disassociate_ucontext, 6641 .drain_rq = mlx5_ib_drain_rq, 6642 .drain_sq = mlx5_ib_drain_sq, 6643 .enable_driver = mlx5_ib_enable_driver, 6644 .fill_res_entry = mlx5_ib_fill_res_entry, 6645 .fill_stat_entry = mlx5_ib_fill_stat_entry, 6646 .get_dev_fw_str = get_dev_fw_str, 6647 .get_dma_mr = mlx5_ib_get_dma_mr, 6648 .get_link_layer = mlx5_ib_port_link_layer, 6649 .map_mr_sg = mlx5_ib_map_mr_sg, 6650 .map_mr_sg_pi = mlx5_ib_map_mr_sg_pi, 6651 .mmap = mlx5_ib_mmap, 6652 .mmap_free = mlx5_ib_mmap_free, 6653 .modify_cq = mlx5_ib_modify_cq, 6654 .modify_device = mlx5_ib_modify_device, 6655 .modify_port = mlx5_ib_modify_port, 6656 .modify_qp = mlx5_ib_modify_qp, 6657 .modify_srq = mlx5_ib_modify_srq, 6658 .poll_cq = mlx5_ib_poll_cq, 6659 .post_recv = mlx5_ib_post_recv, 6660 .post_send = mlx5_ib_post_send, 6661 .post_srq_recv = mlx5_ib_post_srq_recv, 6662 .process_mad = mlx5_ib_process_mad, 6663 .query_ah = mlx5_ib_query_ah, 6664 .query_device = mlx5_ib_query_device, 6665 .query_gid = mlx5_ib_query_gid, 6666 .query_pkey = mlx5_ib_query_pkey, 6667 .query_qp = mlx5_ib_query_qp, 6668 .query_srq = mlx5_ib_query_srq, 6669 .read_counters = mlx5_ib_read_counters, 6670 .reg_user_mr = mlx5_ib_reg_user_mr, 6671 .req_notify_cq = mlx5_ib_arm_cq, 6672 .rereg_user_mr = mlx5_ib_rereg_user_mr, 6673 .resize_cq = mlx5_ib_resize_cq, 6674 6675 INIT_RDMA_OBJ_SIZE(ib_ah, mlx5_ib_ah, ibah), 6676 INIT_RDMA_OBJ_SIZE(ib_cq, mlx5_ib_cq, ibcq), 6677 INIT_RDMA_OBJ_SIZE(ib_pd, mlx5_ib_pd, ibpd), 6678 INIT_RDMA_OBJ_SIZE(ib_srq, mlx5_ib_srq, ibsrq), 6679 INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx5_ib_ucontext, ibucontext), 6680 }; 6681 6682 static const struct ib_device_ops mlx5_ib_dev_flow_ipsec_ops = { 6683 .create_flow_action_esp = mlx5_ib_create_flow_action_esp, 6684 .modify_flow_action_esp = mlx5_ib_modify_flow_action_esp, 6685 }; 6686 6687 static const struct ib_device_ops mlx5_ib_dev_ipoib_enhanced_ops = { 6688 .rdma_netdev_get_params = mlx5_ib_rn_get_params, 6689 }; 6690 6691 static const struct ib_device_ops mlx5_ib_dev_sriov_ops = { 6692 .get_vf_config = mlx5_ib_get_vf_config, 6693 .get_vf_guid = mlx5_ib_get_vf_guid, 6694 .get_vf_stats = mlx5_ib_get_vf_stats, 6695 .set_vf_guid = mlx5_ib_set_vf_guid, 6696 .set_vf_link_state = mlx5_ib_set_vf_link_state, 6697 }; 6698 6699 static const struct ib_device_ops mlx5_ib_dev_mw_ops = { 6700 .alloc_mw = mlx5_ib_alloc_mw, 6701 .dealloc_mw = mlx5_ib_dealloc_mw, 6702 }; 6703 6704 static const struct ib_device_ops mlx5_ib_dev_xrc_ops = { 6705 .alloc_xrcd = mlx5_ib_alloc_xrcd, 6706 .dealloc_xrcd = mlx5_ib_dealloc_xrcd, 6707 }; 6708 6709 static const struct ib_device_ops mlx5_ib_dev_dm_ops = { 6710 .alloc_dm = mlx5_ib_alloc_dm, 6711 .dealloc_dm = mlx5_ib_dealloc_dm, 6712 .reg_dm_mr = mlx5_ib_reg_dm_mr, 6713 }; 6714 6715 static int mlx5_ib_init_var_table(struct mlx5_ib_dev *dev) 6716 { 6717 struct mlx5_core_dev *mdev = dev->mdev; 6718 struct mlx5_var_table *var_table = &dev->var_table; 6719 u8 log_doorbell_bar_size; 6720 u8 log_doorbell_stride; 6721 u64 bar_size; 6722 6723 log_doorbell_bar_size = MLX5_CAP_DEV_VDPA_EMULATION(mdev, 6724 log_doorbell_bar_size); 6725 log_doorbell_stride = MLX5_CAP_DEV_VDPA_EMULATION(mdev, 6726 log_doorbell_stride); 6727 var_table->hw_start_addr = dev->mdev->bar_addr + 6728 MLX5_CAP64_DEV_VDPA_EMULATION(mdev, 6729 doorbell_bar_offset); 6730 bar_size = (1ULL << log_doorbell_bar_size) * 4096; 6731 var_table->stride_size = 1ULL << log_doorbell_stride; 6732 var_table->num_var_hw_entries = div_u64(bar_size, 6733 var_table->stride_size); 6734 mutex_init(&var_table->bitmap_lock); 6735 var_table->bitmap = bitmap_zalloc(var_table->num_var_hw_entries, 6736 GFP_KERNEL); 6737 return (var_table->bitmap) ? 0 : -ENOMEM; 6738 } 6739 6740 static void mlx5_ib_stage_caps_cleanup(struct mlx5_ib_dev *dev) 6741 { 6742 bitmap_free(dev->var_table.bitmap); 6743 } 6744 6745 static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev) 6746 { 6747 struct mlx5_core_dev *mdev = dev->mdev; 6748 int err; 6749 6750 dev->ib_dev.uverbs_cmd_mask = 6751 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 6752 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 6753 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 6754 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 6755 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 6756 (1ull << IB_USER_VERBS_CMD_CREATE_AH) | 6757 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | 6758 (1ull << IB_USER_VERBS_CMD_REG_MR) | 6759 (1ull << IB_USER_VERBS_CMD_REREG_MR) | 6760 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 6761 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 6762 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 6763 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 6764 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 6765 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 6766 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 6767 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 6768 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 6769 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 6770 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 6771 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 6772 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 6773 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 6774 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 6775 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 6776 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 6777 dev->ib_dev.uverbs_ex_cmd_mask = 6778 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) | 6779 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) | 6780 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP) | 6781 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_QP) | 6782 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ) | 6783 (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | 6784 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); 6785 6786 if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) && 6787 IS_ENABLED(CONFIG_MLX5_CORE_IPOIB)) 6788 ib_set_device_ops(&dev->ib_dev, 6789 &mlx5_ib_dev_ipoib_enhanced_ops); 6790 6791 if (mlx5_core_is_pf(mdev)) 6792 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_sriov_ops); 6793 6794 dev->umr_fence = mlx5_get_umr_fence(MLX5_CAP_GEN(mdev, umr_fence)); 6795 6796 if (MLX5_CAP_GEN(mdev, imaicl)) { 6797 dev->ib_dev.uverbs_cmd_mask |= 6798 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 6799 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); 6800 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_mw_ops); 6801 } 6802 6803 if (MLX5_CAP_GEN(mdev, xrc)) { 6804 dev->ib_dev.uverbs_cmd_mask |= 6805 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 6806 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 6807 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_xrc_ops); 6808 } 6809 6810 if (MLX5_CAP_DEV_MEM(mdev, memic) || 6811 MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 6812 MLX5_GENERAL_OBJ_TYPES_CAP_SW_ICM) 6813 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_dm_ops); 6814 6815 if (mlx5_accel_ipsec_device_caps(dev->mdev) & 6816 MLX5_ACCEL_IPSEC_CAP_DEVICE) 6817 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_flow_ipsec_ops); 6818 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_ops); 6819 6820 if (IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)) 6821 dev->ib_dev.driver_def = mlx5_ib_defs; 6822 6823 err = init_node_data(dev); 6824 if (err) 6825 return err; 6826 6827 if ((MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) && 6828 (MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) || 6829 MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc))) 6830 mutex_init(&dev->lb.mutex); 6831 6832 if (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) & 6833 MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q) { 6834 err = mlx5_ib_init_var_table(dev); 6835 if (err) 6836 return err; 6837 } 6838 6839 dev->ib_dev.use_cq_dim = true; 6840 6841 return 0; 6842 } 6843 6844 static const struct ib_device_ops mlx5_ib_dev_port_ops = { 6845 .get_port_immutable = mlx5_port_immutable, 6846 .query_port = mlx5_ib_query_port, 6847 }; 6848 6849 static int mlx5_ib_stage_non_default_cb(struct mlx5_ib_dev *dev) 6850 { 6851 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_port_ops); 6852 return 0; 6853 } 6854 6855 static const struct ib_device_ops mlx5_ib_dev_port_rep_ops = { 6856 .get_port_immutable = mlx5_port_rep_immutable, 6857 .query_port = mlx5_ib_rep_query_port, 6858 }; 6859 6860 static int mlx5_ib_stage_raw_eth_non_default_cb(struct mlx5_ib_dev *dev) 6861 { 6862 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_port_rep_ops); 6863 return 0; 6864 } 6865 6866 static const struct ib_device_ops mlx5_ib_dev_common_roce_ops = { 6867 .create_rwq_ind_table = mlx5_ib_create_rwq_ind_table, 6868 .create_wq = mlx5_ib_create_wq, 6869 .destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table, 6870 .destroy_wq = mlx5_ib_destroy_wq, 6871 .get_netdev = mlx5_ib_get_netdev, 6872 .modify_wq = mlx5_ib_modify_wq, 6873 }; 6874 6875 static int mlx5_ib_stage_common_roce_init(struct mlx5_ib_dev *dev) 6876 { 6877 u8 port_num; 6878 6879 dev->ib_dev.uverbs_ex_cmd_mask |= 6880 (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) | 6881 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) | 6882 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) | 6883 (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) | 6884 (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL); 6885 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_common_roce_ops); 6886 6887 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 6888 6889 /* Register only for native ports */ 6890 return mlx5_add_netdev_notifier(dev, port_num); 6891 } 6892 6893 static void mlx5_ib_stage_common_roce_cleanup(struct mlx5_ib_dev *dev) 6894 { 6895 u8 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 6896 6897 mlx5_remove_netdev_notifier(dev, port_num); 6898 } 6899 6900 static int mlx5_ib_stage_raw_eth_roce_init(struct mlx5_ib_dev *dev) 6901 { 6902 struct mlx5_core_dev *mdev = dev->mdev; 6903 enum rdma_link_layer ll; 6904 int port_type_cap; 6905 int err = 0; 6906 6907 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 6908 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 6909 6910 if (ll == IB_LINK_LAYER_ETHERNET) 6911 err = mlx5_ib_stage_common_roce_init(dev); 6912 6913 return err; 6914 } 6915 6916 static void mlx5_ib_stage_raw_eth_roce_cleanup(struct mlx5_ib_dev *dev) 6917 { 6918 mlx5_ib_stage_common_roce_cleanup(dev); 6919 } 6920 6921 static int mlx5_ib_stage_roce_init(struct mlx5_ib_dev *dev) 6922 { 6923 struct mlx5_core_dev *mdev = dev->mdev; 6924 enum rdma_link_layer ll; 6925 int port_type_cap; 6926 int err; 6927 6928 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 6929 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 6930 6931 if (ll == IB_LINK_LAYER_ETHERNET) { 6932 err = mlx5_ib_stage_common_roce_init(dev); 6933 if (err) 6934 return err; 6935 6936 err = mlx5_enable_eth(dev); 6937 if (err) 6938 goto cleanup; 6939 } 6940 6941 return 0; 6942 cleanup: 6943 mlx5_ib_stage_common_roce_cleanup(dev); 6944 6945 return err; 6946 } 6947 6948 static void mlx5_ib_stage_roce_cleanup(struct mlx5_ib_dev *dev) 6949 { 6950 struct mlx5_core_dev *mdev = dev->mdev; 6951 enum rdma_link_layer ll; 6952 int port_type_cap; 6953 6954 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 6955 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 6956 6957 if (ll == IB_LINK_LAYER_ETHERNET) { 6958 mlx5_disable_eth(dev); 6959 mlx5_ib_stage_common_roce_cleanup(dev); 6960 } 6961 } 6962 6963 static int mlx5_ib_stage_dev_res_init(struct mlx5_ib_dev *dev) 6964 { 6965 return create_dev_resources(&dev->devr); 6966 } 6967 6968 static void mlx5_ib_stage_dev_res_cleanup(struct mlx5_ib_dev *dev) 6969 { 6970 destroy_dev_resources(&dev->devr); 6971 } 6972 6973 static int mlx5_ib_stage_odp_init(struct mlx5_ib_dev *dev) 6974 { 6975 return mlx5_ib_odp_init_one(dev); 6976 } 6977 6978 static void mlx5_ib_stage_odp_cleanup(struct mlx5_ib_dev *dev) 6979 { 6980 mlx5_ib_odp_cleanup_one(dev); 6981 } 6982 6983 static const struct ib_device_ops mlx5_ib_dev_hw_stats_ops = { 6984 .alloc_hw_stats = mlx5_ib_alloc_hw_stats, 6985 .get_hw_stats = mlx5_ib_get_hw_stats, 6986 .counter_bind_qp = mlx5_ib_counter_bind_qp, 6987 .counter_unbind_qp = mlx5_ib_counter_unbind_qp, 6988 .counter_dealloc = mlx5_ib_counter_dealloc, 6989 .counter_alloc_stats = mlx5_ib_counter_alloc_stats, 6990 .counter_update_stats = mlx5_ib_counter_update_stats, 6991 }; 6992 6993 static int mlx5_ib_stage_counters_init(struct mlx5_ib_dev *dev) 6994 { 6995 if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) { 6996 ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_hw_stats_ops); 6997 6998 return mlx5_ib_alloc_counters(dev); 6999 } 7000 7001 return 0; 7002 } 7003 7004 static void mlx5_ib_stage_counters_cleanup(struct mlx5_ib_dev *dev) 7005 { 7006 if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) 7007 mlx5_ib_dealloc_counters(dev); 7008 } 7009 7010 static int mlx5_ib_stage_cong_debugfs_init(struct mlx5_ib_dev *dev) 7011 { 7012 mlx5_ib_init_cong_debugfs(dev, 7013 mlx5_core_native_port_num(dev->mdev) - 1); 7014 return 0; 7015 } 7016 7017 static void mlx5_ib_stage_cong_debugfs_cleanup(struct mlx5_ib_dev *dev) 7018 { 7019 mlx5_ib_cleanup_cong_debugfs(dev, 7020 mlx5_core_native_port_num(dev->mdev) - 1); 7021 } 7022 7023 static int mlx5_ib_stage_uar_init(struct mlx5_ib_dev *dev) 7024 { 7025 dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev); 7026 return PTR_ERR_OR_ZERO(dev->mdev->priv.uar); 7027 } 7028 7029 static void mlx5_ib_stage_uar_cleanup(struct mlx5_ib_dev *dev) 7030 { 7031 mlx5_put_uars_page(dev->mdev, dev->mdev->priv.uar); 7032 } 7033 7034 static int mlx5_ib_stage_bfrag_init(struct mlx5_ib_dev *dev) 7035 { 7036 int err; 7037 7038 err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false); 7039 if (err) 7040 return err; 7041 7042 err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true); 7043 if (err) 7044 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg); 7045 7046 return err; 7047 } 7048 7049 static void mlx5_ib_stage_bfrag_cleanup(struct mlx5_ib_dev *dev) 7050 { 7051 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg); 7052 mlx5_free_bfreg(dev->mdev, &dev->bfreg); 7053 } 7054 7055 static int mlx5_ib_stage_ib_reg_init(struct mlx5_ib_dev *dev) 7056 { 7057 const char *name; 7058 7059 rdma_set_device_sysfs_group(&dev->ib_dev, &mlx5_attr_group); 7060 if (!mlx5_lag_is_roce(dev->mdev)) 7061 name = "mlx5_%d"; 7062 else 7063 name = "mlx5_bond_%d"; 7064 return ib_register_device(&dev->ib_dev, name); 7065 } 7066 7067 static void mlx5_ib_stage_pre_ib_reg_umr_cleanup(struct mlx5_ib_dev *dev) 7068 { 7069 destroy_umrc_res(dev); 7070 } 7071 7072 static void mlx5_ib_stage_ib_reg_cleanup(struct mlx5_ib_dev *dev) 7073 { 7074 ib_unregister_device(&dev->ib_dev); 7075 } 7076 7077 static int mlx5_ib_stage_post_ib_reg_umr_init(struct mlx5_ib_dev *dev) 7078 { 7079 return create_umr_res(dev); 7080 } 7081 7082 static int mlx5_ib_stage_delay_drop_init(struct mlx5_ib_dev *dev) 7083 { 7084 init_delay_drop(dev); 7085 7086 return 0; 7087 } 7088 7089 static void mlx5_ib_stage_delay_drop_cleanup(struct mlx5_ib_dev *dev) 7090 { 7091 cancel_delay_drop(dev); 7092 } 7093 7094 static int mlx5_ib_stage_dev_notifier_init(struct mlx5_ib_dev *dev) 7095 { 7096 dev->mdev_events.notifier_call = mlx5_ib_event; 7097 mlx5_notifier_register(dev->mdev, &dev->mdev_events); 7098 return 0; 7099 } 7100 7101 static void mlx5_ib_stage_dev_notifier_cleanup(struct mlx5_ib_dev *dev) 7102 { 7103 mlx5_notifier_unregister(dev->mdev, &dev->mdev_events); 7104 } 7105 7106 static int mlx5_ib_stage_devx_init(struct mlx5_ib_dev *dev) 7107 { 7108 int uid; 7109 7110 uid = mlx5_ib_devx_create(dev, false); 7111 if (uid > 0) { 7112 dev->devx_whitelist_uid = uid; 7113 mlx5_ib_devx_init_event_table(dev); 7114 } 7115 7116 return 0; 7117 } 7118 static void mlx5_ib_stage_devx_cleanup(struct mlx5_ib_dev *dev) 7119 { 7120 if (dev->devx_whitelist_uid) { 7121 mlx5_ib_devx_cleanup_event_table(dev); 7122 mlx5_ib_devx_destroy(dev, dev->devx_whitelist_uid); 7123 } 7124 } 7125 7126 int mlx5_ib_enable_driver(struct ib_device *dev) 7127 { 7128 struct mlx5_ib_dev *mdev = to_mdev(dev); 7129 int ret; 7130 7131 ret = mlx5_ib_test_wc(mdev); 7132 mlx5_ib_dbg(mdev, "Write-Combining %s", 7133 mdev->wc_support ? "supported" : "not supported"); 7134 7135 return ret; 7136 } 7137 7138 void __mlx5_ib_remove(struct mlx5_ib_dev *dev, 7139 const struct mlx5_ib_profile *profile, 7140 int stage) 7141 { 7142 dev->ib_active = false; 7143 7144 /* Number of stages to cleanup */ 7145 while (stage) { 7146 stage--; 7147 if (profile->stage[stage].cleanup) 7148 profile->stage[stage].cleanup(dev); 7149 } 7150 7151 kfree(dev->port); 7152 ib_dealloc_device(&dev->ib_dev); 7153 } 7154 7155 void *__mlx5_ib_add(struct mlx5_ib_dev *dev, 7156 const struct mlx5_ib_profile *profile) 7157 { 7158 int err; 7159 int i; 7160 7161 for (i = 0; i < MLX5_IB_STAGE_MAX; i++) { 7162 if (profile->stage[i].init) { 7163 err = profile->stage[i].init(dev); 7164 if (err) 7165 goto err_out; 7166 } 7167 } 7168 7169 dev->profile = profile; 7170 dev->ib_active = true; 7171 7172 return dev; 7173 7174 err_out: 7175 __mlx5_ib_remove(dev, profile, i); 7176 7177 return NULL; 7178 } 7179 7180 static const struct mlx5_ib_profile pf_profile = { 7181 STAGE_CREATE(MLX5_IB_STAGE_INIT, 7182 mlx5_ib_stage_init_init, 7183 mlx5_ib_stage_init_cleanup), 7184 STAGE_CREATE(MLX5_IB_STAGE_FLOW_DB, 7185 mlx5_ib_stage_flow_db_init, 7186 mlx5_ib_stage_flow_db_cleanup), 7187 STAGE_CREATE(MLX5_IB_STAGE_CAPS, 7188 mlx5_ib_stage_caps_init, 7189 mlx5_ib_stage_caps_cleanup), 7190 STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, 7191 mlx5_ib_stage_non_default_cb, 7192 NULL), 7193 STAGE_CREATE(MLX5_IB_STAGE_ROCE, 7194 mlx5_ib_stage_roce_init, 7195 mlx5_ib_stage_roce_cleanup), 7196 STAGE_CREATE(MLX5_IB_STAGE_QP, 7197 mlx5_init_qp_table, 7198 mlx5_cleanup_qp_table), 7199 STAGE_CREATE(MLX5_IB_STAGE_SRQ, 7200 mlx5_init_srq_table, 7201 mlx5_cleanup_srq_table), 7202 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES, 7203 mlx5_ib_stage_dev_res_init, 7204 mlx5_ib_stage_dev_res_cleanup), 7205 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_NOTIFIER, 7206 mlx5_ib_stage_dev_notifier_init, 7207 mlx5_ib_stage_dev_notifier_cleanup), 7208 STAGE_CREATE(MLX5_IB_STAGE_ODP, 7209 mlx5_ib_stage_odp_init, 7210 mlx5_ib_stage_odp_cleanup), 7211 STAGE_CREATE(MLX5_IB_STAGE_COUNTERS, 7212 mlx5_ib_stage_counters_init, 7213 mlx5_ib_stage_counters_cleanup), 7214 STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS, 7215 mlx5_ib_stage_cong_debugfs_init, 7216 mlx5_ib_stage_cong_debugfs_cleanup), 7217 STAGE_CREATE(MLX5_IB_STAGE_UAR, 7218 mlx5_ib_stage_uar_init, 7219 mlx5_ib_stage_uar_cleanup), 7220 STAGE_CREATE(MLX5_IB_STAGE_BFREG, 7221 mlx5_ib_stage_bfrag_init, 7222 mlx5_ib_stage_bfrag_cleanup), 7223 STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR, 7224 NULL, 7225 mlx5_ib_stage_pre_ib_reg_umr_cleanup), 7226 STAGE_CREATE(MLX5_IB_STAGE_WHITELIST_UID, 7227 mlx5_ib_stage_devx_init, 7228 mlx5_ib_stage_devx_cleanup), 7229 STAGE_CREATE(MLX5_IB_STAGE_IB_REG, 7230 mlx5_ib_stage_ib_reg_init, 7231 mlx5_ib_stage_ib_reg_cleanup), 7232 STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR, 7233 mlx5_ib_stage_post_ib_reg_umr_init, 7234 NULL), 7235 STAGE_CREATE(MLX5_IB_STAGE_DELAY_DROP, 7236 mlx5_ib_stage_delay_drop_init, 7237 mlx5_ib_stage_delay_drop_cleanup), 7238 }; 7239 7240 const struct mlx5_ib_profile raw_eth_profile = { 7241 STAGE_CREATE(MLX5_IB_STAGE_INIT, 7242 mlx5_ib_stage_init_init, 7243 mlx5_ib_stage_init_cleanup), 7244 STAGE_CREATE(MLX5_IB_STAGE_FLOW_DB, 7245 mlx5_ib_stage_flow_db_init, 7246 mlx5_ib_stage_flow_db_cleanup), 7247 STAGE_CREATE(MLX5_IB_STAGE_CAPS, 7248 mlx5_ib_stage_caps_init, 7249 mlx5_ib_stage_caps_cleanup), 7250 STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB, 7251 mlx5_ib_stage_raw_eth_non_default_cb, 7252 NULL), 7253 STAGE_CREATE(MLX5_IB_STAGE_ROCE, 7254 mlx5_ib_stage_raw_eth_roce_init, 7255 mlx5_ib_stage_raw_eth_roce_cleanup), 7256 STAGE_CREATE(MLX5_IB_STAGE_QP, 7257 mlx5_init_qp_table, 7258 mlx5_cleanup_qp_table), 7259 STAGE_CREATE(MLX5_IB_STAGE_SRQ, 7260 mlx5_init_srq_table, 7261 mlx5_cleanup_srq_table), 7262 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES, 7263 mlx5_ib_stage_dev_res_init, 7264 mlx5_ib_stage_dev_res_cleanup), 7265 STAGE_CREATE(MLX5_IB_STAGE_DEVICE_NOTIFIER, 7266 mlx5_ib_stage_dev_notifier_init, 7267 mlx5_ib_stage_dev_notifier_cleanup), 7268 STAGE_CREATE(MLX5_IB_STAGE_COUNTERS, 7269 mlx5_ib_stage_counters_init, 7270 mlx5_ib_stage_counters_cleanup), 7271 STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS, 7272 mlx5_ib_stage_cong_debugfs_init, 7273 mlx5_ib_stage_cong_debugfs_cleanup), 7274 STAGE_CREATE(MLX5_IB_STAGE_UAR, 7275 mlx5_ib_stage_uar_init, 7276 mlx5_ib_stage_uar_cleanup), 7277 STAGE_CREATE(MLX5_IB_STAGE_BFREG, 7278 mlx5_ib_stage_bfrag_init, 7279 mlx5_ib_stage_bfrag_cleanup), 7280 STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR, 7281 NULL, 7282 mlx5_ib_stage_pre_ib_reg_umr_cleanup), 7283 STAGE_CREATE(MLX5_IB_STAGE_WHITELIST_UID, 7284 mlx5_ib_stage_devx_init, 7285 mlx5_ib_stage_devx_cleanup), 7286 STAGE_CREATE(MLX5_IB_STAGE_IB_REG, 7287 mlx5_ib_stage_ib_reg_init, 7288 mlx5_ib_stage_ib_reg_cleanup), 7289 STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR, 7290 mlx5_ib_stage_post_ib_reg_umr_init, 7291 NULL), 7292 }; 7293 7294 static void *mlx5_ib_add_slave_port(struct mlx5_core_dev *mdev) 7295 { 7296 struct mlx5_ib_multiport_info *mpi; 7297 struct mlx5_ib_dev *dev; 7298 bool bound = false; 7299 int err; 7300 7301 mpi = kzalloc(sizeof(*mpi), GFP_KERNEL); 7302 if (!mpi) 7303 return NULL; 7304 7305 mpi->mdev = mdev; 7306 7307 err = mlx5_query_nic_vport_system_image_guid(mdev, 7308 &mpi->sys_image_guid); 7309 if (err) { 7310 kfree(mpi); 7311 return NULL; 7312 } 7313 7314 mutex_lock(&mlx5_ib_multiport_mutex); 7315 list_for_each_entry(dev, &mlx5_ib_dev_list, ib_dev_list) { 7316 if (dev->sys_image_guid == mpi->sys_image_guid) 7317 bound = mlx5_ib_bind_slave_port(dev, mpi); 7318 7319 if (bound) { 7320 rdma_roce_rescan_device(&dev->ib_dev); 7321 break; 7322 } 7323 } 7324 7325 if (!bound) { 7326 list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list); 7327 dev_dbg(mdev->device, 7328 "no suitable IB device found to bind to, added to unaffiliated list.\n"); 7329 } 7330 mutex_unlock(&mlx5_ib_multiport_mutex); 7331 7332 return mpi; 7333 } 7334 7335 static void *mlx5_ib_add(struct mlx5_core_dev *mdev) 7336 { 7337 const struct mlx5_ib_profile *profile; 7338 enum rdma_link_layer ll; 7339 struct mlx5_ib_dev *dev; 7340 int port_type_cap; 7341 int num_ports; 7342 7343 printk_once(KERN_INFO "%s", mlx5_version); 7344 7345 if (MLX5_ESWITCH_MANAGER(mdev) && 7346 mlx5_ib_eswitch_mode(mdev->priv.eswitch) == MLX5_ESWITCH_OFFLOADS) { 7347 if (!mlx5_core_mp_enabled(mdev)) 7348 mlx5_ib_register_vport_reps(mdev); 7349 return mdev; 7350 } 7351 7352 port_type_cap = MLX5_CAP_GEN(mdev, port_type); 7353 ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); 7354 7355 if (mlx5_core_is_mp_slave(mdev) && ll == IB_LINK_LAYER_ETHERNET) 7356 return mlx5_ib_add_slave_port(mdev); 7357 7358 num_ports = max(MLX5_CAP_GEN(mdev, num_ports), 7359 MLX5_CAP_GEN(mdev, num_vhca_ports)); 7360 dev = ib_alloc_device(mlx5_ib_dev, ib_dev); 7361 if (!dev) 7362 return NULL; 7363 dev->port = kcalloc(num_ports, sizeof(*dev->port), 7364 GFP_KERNEL); 7365 if (!dev->port) { 7366 ib_dealloc_device(&dev->ib_dev); 7367 return NULL; 7368 } 7369 7370 dev->mdev = mdev; 7371 dev->num_ports = num_ports; 7372 7373 if (ll == IB_LINK_LAYER_ETHERNET && !mlx5_is_roce_enabled(mdev)) 7374 profile = &raw_eth_profile; 7375 else 7376 profile = &pf_profile; 7377 7378 return __mlx5_ib_add(dev, profile); 7379 } 7380 7381 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context) 7382 { 7383 struct mlx5_ib_multiport_info *mpi; 7384 struct mlx5_ib_dev *dev; 7385 7386 if (MLX5_ESWITCH_MANAGER(mdev) && context == mdev) { 7387 mlx5_ib_unregister_vport_reps(mdev); 7388 return; 7389 } 7390 7391 if (mlx5_core_is_mp_slave(mdev)) { 7392 mpi = context; 7393 mutex_lock(&mlx5_ib_multiport_mutex); 7394 if (mpi->ibdev) 7395 mlx5_ib_unbind_slave_port(mpi->ibdev, mpi); 7396 list_del(&mpi->list); 7397 mutex_unlock(&mlx5_ib_multiport_mutex); 7398 kfree(mpi); 7399 return; 7400 } 7401 7402 dev = context; 7403 __mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX); 7404 } 7405 7406 static struct mlx5_interface mlx5_ib_interface = { 7407 .add = mlx5_ib_add, 7408 .remove = mlx5_ib_remove, 7409 .protocol = MLX5_INTERFACE_PROTOCOL_IB, 7410 }; 7411 7412 unsigned long mlx5_ib_get_xlt_emergency_page(void) 7413 { 7414 mutex_lock(&xlt_emergency_page_mutex); 7415 return xlt_emergency_page; 7416 } 7417 7418 void mlx5_ib_put_xlt_emergency_page(void) 7419 { 7420 mutex_unlock(&xlt_emergency_page_mutex); 7421 } 7422 7423 static int __init mlx5_ib_init(void) 7424 { 7425 int err; 7426 7427 xlt_emergency_page = __get_free_page(GFP_KERNEL); 7428 if (!xlt_emergency_page) 7429 return -ENOMEM; 7430 7431 mutex_init(&xlt_emergency_page_mutex); 7432 7433 mlx5_ib_event_wq = alloc_ordered_workqueue("mlx5_ib_event_wq", 0); 7434 if (!mlx5_ib_event_wq) { 7435 free_page(xlt_emergency_page); 7436 return -ENOMEM; 7437 } 7438 7439 mlx5_ib_odp_init(); 7440 7441 err = mlx5_register_interface(&mlx5_ib_interface); 7442 7443 return err; 7444 } 7445 7446 static void __exit mlx5_ib_cleanup(void) 7447 { 7448 mlx5_unregister_interface(&mlx5_ib_interface); 7449 destroy_workqueue(mlx5_ib_event_wq); 7450 mutex_destroy(&xlt_emergency_page_mutex); 7451 free_page(xlt_emergency_page); 7452 } 7453 7454 module_init(mlx5_ib_init); 7455 module_exit(mlx5_ib_cleanup); 7456