drivers/infiniband/hw/mlx5/main.c

   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 #if defined(CONFIG_X86)
  43 #include <asm/pat.h>
  44 #endif
  45 #include <linux/sched.h>
  46 #include <linux/sched/mm.h>
  47 #include <linux/sched/task.h>
  48 #include <linux/delay.h>
  49 #include <rdma/ib_user_verbs.h>
  50 #include <rdma/ib_addr.h>
  51 #include <rdma/ib_cache.h>
  52 #include <linux/mlx5/port.h>
  53 #include <linux/mlx5/vport.h>
  54 #include <linux/mlx5/fs.h>
  55 #include <linux/list.h>
  56 #include <rdma/ib_smi.h>
  57 #include <rdma/ib_umem.h>
  58 #include <linux/in.h>
  59 #include <linux/etherdevice.h>
  60 #include "mlx5_ib.h"
  61 #include "ib_rep.h"
  62 #include "cmd.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
  69 #define UVERBS_MODULE_NAME mlx5_ib
  70 #include <rdma/uverbs_named_ioctl.h>
  71
  72 #define DRIVER_NAME "mlx5_ib"
  73 #define DRIVER_VERSION "5.0-0"
  74
  75 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
  76 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
  77 MODULE_LICENSE("Dual BSD/GPL");
  78
  79 static char mlx5_version[] =
  80         DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
  81         DRIVER_VERSION "\n";
  82
  83 struct mlx5_ib_event_work {
  84         struct work_struct      work;
  85         struct mlx5_core_dev    *dev;
  86         void                    *context;
  87         enum mlx5_dev_event     event;
  88         unsigned long           param;
  89 };
  90
  91 enum {
  92         MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3,
  93 };
  94
  95 static struct workqueue_struct *mlx5_ib_event_wq;
  96 static LIST_HEAD(mlx5_ib_unaffiliated_port_list);
  97 static LIST_HEAD(mlx5_ib_dev_list);
  98 /*
  99  * This mutex should be held when accessing either of the above lists
 100  */
 101 static DEFINE_MUTEX(mlx5_ib_multiport_mutex);
 102
 103 /* We can't use an array for xlt_emergency_page because dma_map_single
 104  * doesn't work on kernel modules memory
 105  */
 106 static unsigned long xlt_emergency_page;
 107 static struct mutex xlt_emergency_page_mutex;
 108
 109 struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi)
 110 {
 111         struct mlx5_ib_dev *dev;
 112
 113         mutex_lock(&mlx5_ib_multiport_mutex);
 114         dev = mpi->ibdev;
 115         mutex_unlock(&mlx5_ib_multiport_mutex);
 116         return dev;
 117 }
 118
 119 static enum rdma_link_layer
 120 mlx5_port_type_cap_to_rdma_ll(int port_type_cap)
 121 {
 122         switch (port_type_cap) {
 123         case MLX5_CAP_PORT_TYPE_IB:
 124                 return IB_LINK_LAYER_INFINIBAND;
 125         case MLX5_CAP_PORT_TYPE_ETH:
 126                 return IB_LINK_LAYER_ETHERNET;
 127         default:
 128                 return IB_LINK_LAYER_UNSPECIFIED;
 129         }
 130 }
 131
 132 static enum rdma_link_layer
 133 mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num)
 134 {
 135         struct mlx5_ib_dev *dev = to_mdev(device);
 136         int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type);
 137
 138         return mlx5_port_type_cap_to_rdma_ll(port_type_cap);
 139 }
 140
 141 static int get_port_state(struct ib_device *ibdev,
 142                           u8 port_num,
 143                           enum ib_port_state *state)
 144 {
 145         struct ib_port_attr attr;
 146         int ret;
 147
 148         memset(&attr, 0, sizeof(attr));
 149         ret = ibdev->query_port(ibdev, port_num, &attr);
 150         if (!ret)
 151                 *state = attr.state;
 152         return ret;
 153 }
 154
 155 static int mlx5_netdev_event(struct notifier_block *this,
 156                              unsigned long event, void *ptr)
 157 {
 158         struct mlx5_roce *roce = container_of(this, struct mlx5_roce, nb);
 159         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 160         u8 port_num = roce->native_port_num;
 161         struct mlx5_core_dev *mdev;
 162         struct mlx5_ib_dev *ibdev;
 163
 164         ibdev = roce->dev;
 165         mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL);
 166         if (!mdev)
 167                 return NOTIFY_DONE;
 168
 169         switch (event) {
 170         case NETDEV_REGISTER:
 171         case NETDEV_UNREGISTER:
 172                 write_lock(&roce->netdev_lock);
 173                 if (ibdev->rep) {
 174                         struct mlx5_eswitch *esw = ibdev->mdev->priv.eswitch;
 175                         struct net_device *rep_ndev;
 176
 177                         rep_ndev = mlx5_ib_get_rep_netdev(esw,
 178                                                           ibdev->rep->vport);
 179                         if (rep_ndev == ndev)
 180                                 roce->netdev = (event == NETDEV_UNREGISTER) ?
 181                                         NULL : ndev;
 182                 } else if (ndev->dev.parent == &mdev->pdev->dev) {
 183                         roce->netdev = (event == NETDEV_UNREGISTER) ?
 184                                 NULL : ndev;
 185                 }
 186                 write_unlock(&roce->netdev_lock);
 187                 break;
 188
 189         case NETDEV_CHANGE:
 190         case NETDEV_UP:
 191         case NETDEV_DOWN: {
 192                 struct net_device *lag_ndev = mlx5_lag_get_roce_netdev(mdev);
 193                 struct net_device *upper = NULL;
 194
 195                 if (lag_ndev) {
 196                         upper = netdev_master_upper_dev_get(lag_ndev);
 197                         dev_put(lag_ndev);
 198                 }
 199
 200                 if ((upper == ndev || (!upper && ndev == roce->netdev))
 201                     && ibdev->ib_active) {
 202                         struct ib_event ibev = { };
 203                         enum ib_port_state port_state;
 204
 205                         if (get_port_state(&ibdev->ib_dev, port_num,
 206                                            &port_state))
 207                                 goto done;
 208
 209                         if (roce->last_port_state == port_state)
 210                                 goto done;
 211
 212                         roce->last_port_state = port_state;
 213                         ibev.device = &ibdev->ib_dev;
 214                         if (port_state == IB_PORT_DOWN)
 215                                 ibev.event = IB_EVENT_PORT_ERR;
 216                         else if (port_state == IB_PORT_ACTIVE)
 217                                 ibev.event = IB_EVENT_PORT_ACTIVE;
 218                         else
 219                                 goto done;
 220
 221                         ibev.element.port_num = port_num;
 222                         ib_dispatch_event(&ibev);
 223                 }
 224                 break;
 225         }
 226
 227         default:
 228                 break;
 229         }
 230 done:
 231         mlx5_ib_put_native_port_mdev(ibdev, port_num);
 232         return NOTIFY_DONE;
 233 }
 234
 235 static struct net_device *mlx5_ib_get_netdev(struct ib_device *device,
 236                                              u8 port_num)
 237 {
 238         struct mlx5_ib_dev *ibdev = to_mdev(device);
 239         struct net_device *ndev;
 240         struct mlx5_core_dev *mdev;
 241
 242         mdev = mlx5_ib_get_native_port_mdev(ibdev, port_num, NULL);
 243         if (!mdev)
 244                 return NULL;
 245
 246         ndev = mlx5_lag_get_roce_netdev(mdev);
 247         if (ndev)
 248                 goto out;
 249
 250         /* Ensure ndev does not disappear before we invoke dev_hold()
 251          */
 252         read_lock(&ibdev->roce[port_num - 1].netdev_lock);
 253         ndev = ibdev->roce[port_num - 1].netdev;
 254         if (ndev)
 255                 dev_hold(ndev);
 256         read_unlock(&ibdev->roce[port_num - 1].netdev_lock);
 257
 258 out:
 259         mlx5_ib_put_native_port_mdev(ibdev, port_num);
 260         return ndev;
 261 }
 262
 263 struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *ibdev,
 264                                                    u8 ib_port_num,
 265                                                    u8 *native_port_num)
 266 {
 267         enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev,
 268                                                           ib_port_num);
 269         struct mlx5_core_dev *mdev = NULL;
 270         struct mlx5_ib_multiport_info *mpi;
 271         struct mlx5_ib_port *port;
 272
 273         if (!mlx5_core_mp_enabled(ibdev->mdev) ||
 274             ll != IB_LINK_LAYER_ETHERNET) {
 275                 if (native_port_num)
 276                         *native_port_num = ib_port_num;
 277                 return ibdev->mdev;
 278         }
 279
 280         if (native_port_num)
 281                 *native_port_num = 1;
 282
 283         port = &ibdev->port[ib_port_num - 1];
 284         if (!port)
 285                 return NULL;
 286
 287         spin_lock(&port->mp.mpi_lock);
 288         mpi = ibdev->port[ib_port_num - 1].mp.mpi;
 289         if (mpi && !mpi->unaffiliate) {
 290                 mdev = mpi->mdev;
 291                 /* If it's the master no need to refcount, it'll exist
 292                  * as long as the ib_dev exists.
 293                  */
 294                 if (!mpi->is_master)
 295                         mpi->mdev_refcnt++;
 296         }
 297         spin_unlock(&port->mp.mpi_lock);
 298
 299         return mdev;
 300 }
 301
 302 void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *ibdev, u8 port_num)
 303 {
 304         enum rdma_link_layer ll = mlx5_ib_port_link_layer(&ibdev->ib_dev,
 305                                                           port_num);
 306         struct mlx5_ib_multiport_info *mpi;
 307         struct mlx5_ib_port *port;
 308
 309         if (!mlx5_core_mp_enabled(ibdev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
 310                 return;
 311
 312         port = &ibdev->port[port_num - 1];
 313
 314         spin_lock(&port->mp.mpi_lock);
 315         mpi = ibdev->port[port_num - 1].mp.mpi;
 316         if (mpi->is_master)
 317                 goto out;
 318
 319         mpi->mdev_refcnt--;
 320         if (mpi->unaffiliate)
 321                 complete(&mpi->unref_comp);
 322 out:
 323         spin_unlock(&port->mp.mpi_lock);
 324 }
 325
 326 static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed,
 327                                     u8 *active_width)
 328 {
 329         switch (eth_proto_oper) {
 330         case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII):
 331         case MLX5E_PROT_MASK(MLX5E_1000BASE_KX):
 332         case MLX5E_PROT_MASK(MLX5E_100BASE_TX):
 333         case MLX5E_PROT_MASK(MLX5E_1000BASE_T):
 334                 *active_width = IB_WIDTH_1X;
 335                 *active_speed = IB_SPEED_SDR;
 336                 break;
 337         case MLX5E_PROT_MASK(MLX5E_10GBASE_T):
 338         case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4):
 339         case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4):
 340         case MLX5E_PROT_MASK(MLX5E_10GBASE_KR):
 341         case MLX5E_PROT_MASK(MLX5E_10GBASE_CR):
 342         case MLX5E_PROT_MASK(MLX5E_10GBASE_SR):
 343         case MLX5E_PROT_MASK(MLX5E_10GBASE_ER):
 344                 *active_width = IB_WIDTH_1X;
 345                 *active_speed = IB_SPEED_QDR;
 346                 break;
 347         case MLX5E_PROT_MASK(MLX5E_25GBASE_CR):
 348         case MLX5E_PROT_MASK(MLX5E_25GBASE_KR):
 349         case MLX5E_PROT_MASK(MLX5E_25GBASE_SR):
 350                 *active_width = IB_WIDTH_1X;
 351                 *active_speed = IB_SPEED_EDR;
 352                 break;
 353         case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4):
 354         case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4):
 355         case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4):
 356         case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4):
 357                 *active_width = IB_WIDTH_4X;
 358                 *active_speed = IB_SPEED_QDR;
 359                 break;
 360         case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2):
 361         case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2):
 362         case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2):
 363                 *active_width = IB_WIDTH_1X;
 364                 *active_speed = IB_SPEED_HDR;
 365                 break;
 366         case MLX5E_PROT_MASK(MLX5E_56GBASE_R4):
 367                 *active_width = IB_WIDTH_4X;
 368                 *active_speed = IB_SPEED_FDR;
 369                 break;
 370         case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4):
 371         case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4):
 372         case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4):
 373         case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4):
 374                 *active_width = IB_WIDTH_4X;
 375                 *active_speed = IB_SPEED_EDR;
 376                 break;
 377         default:
 378                 return -EINVAL;
 379         }
 380
 381         return 0;
 382 }
 383
 384 static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
 385                                 struct ib_port_attr *props)
 386 {
 387         struct mlx5_ib_dev *dev = to_mdev(device);
 388         struct mlx5_core_dev *mdev;
 389         struct net_device *ndev, *upper;
 390         enum ib_mtu ndev_ib_mtu;
 391         bool put_mdev = true;
 392         u16 qkey_viol_cntr;
 393         u32 eth_prot_oper;
 394         u8 mdev_port_num;
 395         int err;
 396
 397         mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
 398         if (!mdev) {
 399                 /* This means the port isn't affiliated yet. Get the
 400                  * info for the master port instead.
 401                  */
 402                 put_mdev = false;
 403                 mdev = dev->mdev;
 404                 mdev_port_num = 1;
 405                 port_num = 1;
 406         }
 407
 408         /* Possible bad flows are checked before filling out props so in case
 409          * of an error it will still be zeroed out.
 410          */
 411         err = mlx5_query_port_eth_proto_oper(mdev, &eth_prot_oper,
 412                                              mdev_port_num);
 413         if (err)
 414                 goto out;
 415
 416         props->active_width     = IB_WIDTH_4X;
 417         props->active_speed     = IB_SPEED_QDR;
 418
 419         translate_eth_proto_oper(eth_prot_oper, &props->active_speed,
 420                                  &props->active_width);
 421
 422         props->port_cap_flags |= IB_PORT_CM_SUP;
 423         props->ip_gids = true;
 424
 425         props->gid_tbl_len      = MLX5_CAP_ROCE(dev->mdev,
 426                                                 roce_address_table_size);
 427         props->max_mtu          = IB_MTU_4096;
 428         props->max_msg_sz       = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg);
 429         props->pkey_tbl_len     = 1;
 430         props->state            = IB_PORT_DOWN;
 431         props->phys_state       = 3;
 432
 433         mlx5_query_nic_vport_qkey_viol_cntr(mdev, &qkey_viol_cntr);
 434         props->qkey_viol_cntr = qkey_viol_cntr;
 435
 436         /* If this is a stub query for an unaffiliated port stop here */
 437         if (!put_mdev)
 438                 goto out;
 439
 440         ndev = mlx5_ib_get_netdev(device, port_num);
 441         if (!ndev)
 442                 goto out;
 443
 444         if (mlx5_lag_is_active(dev->mdev)) {
 445                 rcu_read_lock();
 446                 upper = netdev_master_upper_dev_get_rcu(ndev);
 447                 if (upper) {
 448                         dev_put(ndev);
 449                         ndev = upper;
 450                         dev_hold(ndev);
 451                 }
 452                 rcu_read_unlock();
 453         }
 454
 455         if (netif_running(ndev) && netif_carrier_ok(ndev)) {
 456                 props->state      = IB_PORT_ACTIVE;
 457                 props->phys_state = 5;
 458         }
 459
 460         ndev_ib_mtu = iboe_get_mtu(ndev->mtu);
 461
 462         dev_put(ndev);
 463
 464         props->active_mtu       = min(props->max_mtu, ndev_ib_mtu);
 465 out:
 466         if (put_mdev)
 467                 mlx5_ib_put_native_port_mdev(dev, port_num);
 468         return err;
 469 }
 470
 471 static int set_roce_addr(struct mlx5_ib_dev *dev, u8 port_num,
 472                          unsigned int index, const union ib_gid *gid,
 473                          const struct ib_gid_attr *attr)
 474 {
 475         enum ib_gid_type gid_type = IB_GID_TYPE_IB;
 476         u8 roce_version = 0;
 477         u8 roce_l3_type = 0;
 478         bool vlan = false;
 479         u8 mac[ETH_ALEN];
 480         u16 vlan_id = 0;
 481
 482         if (gid) {
 483                 gid_type = attr->gid_type;
 484                 ether_addr_copy(mac, attr->ndev->dev_addr);
 485
 486                 if (is_vlan_dev(attr->ndev)) {
 487                         vlan = true;
 488                         vlan_id = vlan_dev_vlan_id(attr->ndev);
 489                 }
 490         }
 491
 492         switch (gid_type) {
 493         case IB_GID_TYPE_IB:
 494                 roce_version = MLX5_ROCE_VERSION_1;
 495                 break;
 496         case IB_GID_TYPE_ROCE_UDP_ENCAP:
 497                 roce_version = MLX5_ROCE_VERSION_2;
 498                 if (ipv6_addr_v4mapped((void *)gid))
 499                         roce_l3_type = MLX5_ROCE_L3_TYPE_IPV4;
 500                 else
 501                         roce_l3_type = MLX5_ROCE_L3_TYPE_IPV6;
 502                 break;
 503
 504         default:
 505                 mlx5_ib_warn(dev, "Unexpected GID type %u\n", gid_type);
 506         }
 507
 508         return mlx5_core_roce_gid_set(dev->mdev, index, roce_version,
 509                                       roce_l3_type, gid->raw, mac, vlan,
 510                                       vlan_id, port_num);
 511 }
 512
 513 static int mlx5_ib_add_gid(const struct ib_gid_attr *attr,
 514                            __always_unused void **context)
 515 {
 516         return set_roce_addr(to_mdev(attr->device), attr->port_num,
 517                              attr->index, &attr->gid, attr);
 518 }
 519
 520 static int mlx5_ib_del_gid(const struct ib_gid_attr *attr,
 521                            __always_unused void **context)
 522 {
 523         return set_roce_addr(to_mdev(attr->device), attr->port_num,
 524                              attr->index, NULL, NULL);
 525 }
 526
 527 __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev,
 528                                const struct ib_gid_attr *attr)
 529 {
 530         if (attr->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
 531                 return 0;
 532
 533         return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port));
 534 }
 535
 536 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
 537 {
 538         if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB)
 539                 return !MLX5_CAP_GEN(dev->mdev, ib_virt);
 540         return 0;
 541 }
 542
 543 enum {
 544         MLX5_VPORT_ACCESS_METHOD_MAD,
 545         MLX5_VPORT_ACCESS_METHOD_HCA,
 546         MLX5_VPORT_ACCESS_METHOD_NIC,
 547 };
 548
 549 static int mlx5_get_vport_access_method(struct ib_device *ibdev)
 550 {
 551         if (mlx5_use_mad_ifc(to_mdev(ibdev)))
 552                 return MLX5_VPORT_ACCESS_METHOD_MAD;
 553
 554         if (mlx5_ib_port_link_layer(ibdev, 1) ==
 555             IB_LINK_LAYER_ETHERNET)
 556                 return MLX5_VPORT_ACCESS_METHOD_NIC;
 557
 558         return MLX5_VPORT_ACCESS_METHOD_HCA;
 559 }
 560
 561 static void get_atomic_caps(struct mlx5_ib_dev *dev,
 562                             u8 atomic_size_qp,
 563                             struct ib_device_attr *props)
 564 {
 565         u8 tmp;
 566         u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
 567         u8 atomic_req_8B_endianness_mode =
 568                 MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianness_mode);
 569
 570         /* Check if HW supports 8 bytes standard atomic operations and capable
 571          * of host endianness respond
 572          */
 573         tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD;
 574         if (((atomic_operations & tmp) == tmp) &&
 575             (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) &&
 576             (atomic_req_8B_endianness_mode)) {
 577                 props->atomic_cap = IB_ATOMIC_HCA;
 578         } else {
 579                 props->atomic_cap = IB_ATOMIC_NONE;
 580         }
 581 }
 582
 583 static void get_atomic_caps_qp(struct mlx5_ib_dev *dev,
 584                                struct ib_device_attr *props)
 585 {
 586         u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
 587
 588         get_atomic_caps(dev, atomic_size_qp, props);
 589 }
 590
 591 static void get_atomic_caps_dc(struct mlx5_ib_dev *dev,
 592                                struct ib_device_attr *props)
 593 {
 594         u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_dc);
 595
 596         get_atomic_caps(dev, atomic_size_qp, props);
 597 }
 598
 599 bool mlx5_ib_dc_atomic_is_supported(struct mlx5_ib_dev *dev)
 600 {
 601         struct ib_device_attr props = {};
 602
 603         get_atomic_caps_dc(dev, &props);
 604         return (props.atomic_cap == IB_ATOMIC_HCA) ? true : false;
 605 }
 606 static int mlx5_query_system_image_guid(struct ib_device *ibdev,
 607                                         __be64 *sys_image_guid)
 608 {
 609         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 610         struct mlx5_core_dev *mdev = dev->mdev;
 611         u64 tmp;
 612         int err;
 613
 614         switch (mlx5_get_vport_access_method(ibdev)) {
 615         case MLX5_VPORT_ACCESS_METHOD_MAD:
 616                 return mlx5_query_mad_ifc_system_image_guid(ibdev,
 617                                                             sys_image_guid);
 618
 619         case MLX5_VPORT_ACCESS_METHOD_HCA:
 620                 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
 621                 break;
 622
 623         case MLX5_VPORT_ACCESS_METHOD_NIC:
 624                 err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp);
 625                 break;
 626
 627         default:
 628                 return -EINVAL;
 629         }
 630
 631         if (!err)
 632                 *sys_image_guid = cpu_to_be64(tmp);
 633
 634         return err;
 635
 636 }
 637
 638 static int mlx5_query_max_pkeys(struct ib_device *ibdev,
 639                                 u16 *max_pkeys)
 640 {
 641         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 642         struct mlx5_core_dev *mdev = dev->mdev;
 643
 644         switch (mlx5_get_vport_access_method(ibdev)) {
 645         case MLX5_VPORT_ACCESS_METHOD_MAD:
 646                 return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys);
 647
 648         case MLX5_VPORT_ACCESS_METHOD_HCA:
 649         case MLX5_VPORT_ACCESS_METHOD_NIC:
 650                 *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev,
 651                                                 pkey_table_size));
 652                 return 0;
 653
 654         default:
 655                 return -EINVAL;
 656         }
 657 }
 658
 659 static int mlx5_query_vendor_id(struct ib_device *ibdev,
 660                                 u32 *vendor_id)
 661 {
 662         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 663
 664         switch (mlx5_get_vport_access_method(ibdev)) {
 665         case MLX5_VPORT_ACCESS_METHOD_MAD:
 666                 return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id);
 667
 668         case MLX5_VPORT_ACCESS_METHOD_HCA:
 669         case MLX5_VPORT_ACCESS_METHOD_NIC:
 670                 return mlx5_core_query_vendor_id(dev->mdev, vendor_id);
 671
 672         default:
 673                 return -EINVAL;
 674         }
 675 }
 676
 677 static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
 678                                 __be64 *node_guid)
 679 {
 680         u64 tmp;
 681         int err;
 682
 683         switch (mlx5_get_vport_access_method(&dev->ib_dev)) {
 684         case MLX5_VPORT_ACCESS_METHOD_MAD:
 685                 return mlx5_query_mad_ifc_node_guid(dev, node_guid);
 686
 687         case MLX5_VPORT_ACCESS_METHOD_HCA:
 688                 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
 689                 break;
 690
 691         case MLX5_VPORT_ACCESS_METHOD_NIC:
 692                 err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp);
 693                 break;
 694
 695         default:
 696                 return -EINVAL;
 697         }
 698
 699         if (!err)
 700                 *node_guid = cpu_to_be64(tmp);
 701
 702         return err;
 703 }
 704
 705 struct mlx5_reg_node_desc {
 706         u8      desc[IB_DEVICE_NODE_DESC_MAX];
 707 };
 708
 709 static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
 710 {
 711         struct mlx5_reg_node_desc in;
 712
 713         if (mlx5_use_mad_ifc(dev))
 714                 return mlx5_query_mad_ifc_node_desc(dev, node_desc);
 715
 716         memset(&in, 0, sizeof(in));
 717
 718         return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc,
 719                                     sizeof(struct mlx5_reg_node_desc),
 720                                     MLX5_REG_NODE_DESC, 0, 0);
 721 }
 722
 723 static int mlx5_ib_query_device(struct ib_device *ibdev,
 724                                 struct ib_device_attr *props,
 725                                 struct ib_udata *uhw)
 726 {
 727         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 728         struct mlx5_core_dev *mdev = dev->mdev;
 729         int err = -ENOMEM;
 730         int max_sq_desc;
 731         int max_rq_sg;
 732         int max_sq_sg;
 733         u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
 734         bool raw_support = !mlx5_core_mp_enabled(mdev);
 735         struct mlx5_ib_query_device_resp resp = {};
 736         size_t resp_len;
 737         u64 max_tso;
 738
 739         resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length);
 740         if (uhw->outlen && uhw->outlen < resp_len)
 741                 return -EINVAL;
 742         else
 743                 resp.response_length = resp_len;
 744
 745         if (uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen))
 746                 return -EINVAL;
 747
 748         memset(props, 0, sizeof(*props));
 749         err = mlx5_query_system_image_guid(ibdev,
 750                                            &props->sys_image_guid);
 751         if (err)
 752                 return err;
 753
 754         err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys);
 755         if (err)
 756                 return err;
 757
 758         err = mlx5_query_vendor_id(ibdev, &props->vendor_id);
 759         if (err)
 760                 return err;
 761
 762         props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
 763                 (fw_rev_min(dev->mdev) << 16) |
 764                 fw_rev_sub(dev->mdev);
 765         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 766                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 767                 IB_DEVICE_SYS_IMAGE_GUID                |
 768                 IB_DEVICE_RC_RNR_NAK_GEN;
 769
 770         if (MLX5_CAP_GEN(mdev, pkv))
 771                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 772         if (MLX5_CAP_GEN(mdev, qkv))
 773                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 774         if (MLX5_CAP_GEN(mdev, apm))
 775                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 776         if (MLX5_CAP_GEN(mdev, xrc))
 777                 props->device_cap_flags |= IB_DEVICE_XRC;
 778         if (MLX5_CAP_GEN(mdev, imaicl)) {
 779                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW |
 780                                            IB_DEVICE_MEM_WINDOW_TYPE_2B;
 781                 props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
 782                 /* We support 'Gappy' memory registration too */
 783                 props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG;
 784         }
 785         props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 786         if (MLX5_CAP_GEN(mdev, sho)) {
 787                 props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
 788                 /* At this stage no support for signature handover */
 789                 props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
 790                                       IB_PROT_T10DIF_TYPE_2 |
 791                                       IB_PROT_T10DIF_TYPE_3;
 792                 props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
 793                                        IB_GUARD_T10DIF_CSUM;
 794         }
 795         if (MLX5_CAP_GEN(mdev, block_lb_mc))
 796                 props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 797
 798         if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && raw_support) {
 799                 if (MLX5_CAP_ETH(mdev, csum_cap)) {
 800                         /* Legacy bit to support old userspace libraries */
 801                         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 802                         props->raw_packet_caps |= IB_RAW_PACKET_CAP_IP_CSUM;
 803                 }
 804
 805                 if (MLX5_CAP_ETH(dev->mdev, vlan_cap))
 806                         props->raw_packet_caps |=
 807                                 IB_RAW_PACKET_CAP_CVLAN_STRIPPING;
 808
 809                 if (field_avail(typeof(resp), tso_caps, uhw->outlen)) {
 810                         max_tso = MLX5_CAP_ETH(mdev, max_lso_cap);
 811                         if (max_tso) {
 812                                 resp.tso_caps.max_tso = 1 << max_tso;
 813                                 resp.tso_caps.supported_qpts |=
 814                                         1 << IB_QPT_RAW_PACKET;
 815                                 resp.response_length += sizeof(resp.tso_caps);
 816                         }
 817                 }
 818
 819                 if (field_avail(typeof(resp), rss_caps, uhw->outlen)) {
 820                         resp.rss_caps.rx_hash_function =
 821                                                 MLX5_RX_HASH_FUNC_TOEPLITZ;
 822                         resp.rss_caps.rx_hash_fields_mask =
 823                                                 MLX5_RX_HASH_SRC_IPV4 |
 824                                                 MLX5_RX_HASH_DST_IPV4 |
 825                                                 MLX5_RX_HASH_SRC_IPV6 |
 826                                                 MLX5_RX_HASH_DST_IPV6 |
 827                                                 MLX5_RX_HASH_SRC_PORT_TCP |
 828                                                 MLX5_RX_HASH_DST_PORT_TCP |
 829                                                 MLX5_RX_HASH_SRC_PORT_UDP |
 830                                                 MLX5_RX_HASH_DST_PORT_UDP |
 831                                                 MLX5_RX_HASH_INNER;
 832                         if (mlx5_accel_ipsec_device_caps(dev->mdev) &
 833                             MLX5_ACCEL_IPSEC_CAP_DEVICE)
 834                                 resp.rss_caps.rx_hash_fields_mask |=
 835                                         MLX5_RX_HASH_IPSEC_SPI;
 836                         resp.response_length += sizeof(resp.rss_caps);
 837                 }
 838         } else {
 839                 if (field_avail(typeof(resp), tso_caps, uhw->outlen))
 840                         resp.response_length += sizeof(resp.tso_caps);
 841                 if (field_avail(typeof(resp), rss_caps, uhw->outlen))
 842                         resp.response_length += sizeof(resp.rss_caps);
 843         }
 844
 845         if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
 846                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 847                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 848         }
 849
 850         if (MLX5_CAP_GEN(dev->mdev, rq_delay_drop) &&
 851             MLX5_CAP_GEN(dev->mdev, general_notification_event) &&
 852             raw_support)
 853                 props->raw_packet_caps |= IB_RAW_PACKET_CAP_DELAY_DROP;
 854
 855         if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
 856             MLX5_CAP_IPOIB_ENHANCED(mdev, csum_cap))
 857                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 858
 859         if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
 860             MLX5_CAP_ETH(dev->mdev, scatter_fcs) &&
 861             raw_support) {
 862                 /* Legacy bit to support old userspace libraries */
 863                 props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS;
 864                 props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
 865         }
 866
 867         if (MLX5_CAP_DEV_MEM(mdev, memic)) {
 868                 props->max_dm_size =
 869                         MLX5_CAP_DEV_MEM(mdev, max_memic_size);
 870         }
 871
 872         if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS))
 873                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 874
 875         if (MLX5_CAP_GEN(mdev, end_pad))
 876                 props->device_cap_flags |= IB_DEVICE_PCI_WRITE_END_PADDING;
 877
 878         props->vendor_part_id      = mdev->pdev->device;
 879         props->hw_ver              = mdev->pdev->revision;
 880
 881         props->max_mr_size         = ~0ull;
 882         props->page_size_cap       = ~(min_page_size - 1);
 883         props->max_qp              = 1 << MLX5_CAP_GEN(mdev, log_max_qp);
 884         props->max_qp_wr           = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
 885         max_rq_sg =  MLX5_CAP_GEN(mdev, max_wqe_sz_rq) /
 886                      sizeof(struct mlx5_wqe_data_seg);
 887         max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512);
 888         max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) -
 889                      sizeof(struct mlx5_wqe_raddr_seg)) /
 890                 sizeof(struct mlx5_wqe_data_seg);
 891         props->max_send_sge = max_sq_sg;
 892         props->max_recv_sge = max_rq_sg;
 893         props->max_sge_rd          = MLX5_MAX_SGE_RD;
 894         props->max_cq              = 1 << MLX5_CAP_GEN(mdev, log_max_cq);
 895         props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1;
 896         props->max_mr              = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
 897         props->max_pd              = 1 << MLX5_CAP_GEN(mdev, log_max_pd);
 898         props->max_qp_rd_atom      = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp);
 899         props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp);
 900         props->max_srq             = 1 << MLX5_CAP_GEN(mdev, log_max_srq);
 901         props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1;
 902         props->local_ca_ack_delay  = MLX5_CAP_GEN(mdev, local_ca_ack_delay);
 903         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 904         props->max_srq_sge         = max_rq_sg - 1;
 905         props->max_fast_reg_page_list_len =
 906                 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size);
 907         get_atomic_caps_qp(dev, props);
 908         props->masked_atomic_cap   = IB_ATOMIC_NONE;
 909         props->max_mcast_grp       = 1 << MLX5_CAP_GEN(mdev, log_max_mcg);
 910         props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
 911         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 912                                            props->max_mcast_grp;
 913         props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
 914         props->max_ah = INT_MAX;
 915         props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz);
 916         props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
 917
 918 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
 919         if (MLX5_CAP_GEN(mdev, pg))
 920                 props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
 921         props->odp_caps = dev->odp_caps;
 922 #endif
 923
 924         if (MLX5_CAP_GEN(mdev, cd))
 925                 props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL;
 926
 927         if (!mlx5_core_is_pf(mdev))
 928                 props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION;
 929
 930         if (mlx5_ib_port_link_layer(ibdev, 1) ==
 931             IB_LINK_LAYER_ETHERNET && raw_support) {
 932                 props->rss_caps.max_rwq_indirection_tables =
 933                         1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt);
 934                 props->rss_caps.max_rwq_indirection_table_size =
 935                         1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size);
 936                 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
 937                 props->max_wq_type_rq =
 938                         1 << MLX5_CAP_GEN(dev->mdev, log_max_rq);
 939         }
 940
 941         if (MLX5_CAP_GEN(mdev, tag_matching)) {
 942                 props->tm_caps.max_rndv_hdr_size = MLX5_TM_MAX_RNDV_MSG_SIZE;
 943                 props->tm_caps.max_num_tags =
 944                         (1 << MLX5_CAP_GEN(mdev, log_tag_matching_list_sz)) - 1;
 945                 props->tm_caps.flags = IB_TM_CAP_RC;
 946                 props->tm_caps.max_ops =
 947                         1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
 948                 props->tm_caps.max_sge = MLX5_TM_MAX_SGE;
 949         }
 950
 951         if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) {
 952                 props->cq_caps.max_cq_moderation_count =
 953                                                 MLX5_MAX_CQ_COUNT;
 954                 props->cq_caps.max_cq_moderation_period =
 955                                                 MLX5_MAX_CQ_PERIOD;
 956         }
 957
 958         if (field_avail(typeof(resp), cqe_comp_caps, uhw->outlen)) {
 959                 resp.response_length += sizeof(resp.cqe_comp_caps);
 960
 961                 if (MLX5_CAP_GEN(dev->mdev, cqe_compression)) {
 962                         resp.cqe_comp_caps.max_num =
 963                                 MLX5_CAP_GEN(dev->mdev,
 964                                              cqe_compression_max_num);
 965
 966                         resp.cqe_comp_caps.supported_format =
 967                                 MLX5_IB_CQE_RES_FORMAT_HASH |
 968                                 MLX5_IB_CQE_RES_FORMAT_CSUM;
 969
 970                         if (MLX5_CAP_GEN(dev->mdev, mini_cqe_resp_stride_index))
 971                                 resp.cqe_comp_caps.supported_format |=
 972                                         MLX5_IB_CQE_RES_FORMAT_CSUM_STRIDX;
 973                 }
 974         }
 975
 976         if (field_avail(typeof(resp), packet_pacing_caps, uhw->outlen) &&
 977             raw_support) {
 978                 if (MLX5_CAP_QOS(mdev, packet_pacing) &&
 979                     MLX5_CAP_GEN(mdev, qos)) {
 980                         resp.packet_pacing_caps.qp_rate_limit_max =
 981                                 MLX5_CAP_QOS(mdev, packet_pacing_max_rate);
 982                         resp.packet_pacing_caps.qp_rate_limit_min =
 983                                 MLX5_CAP_QOS(mdev, packet_pacing_min_rate);
 984                         resp.packet_pacing_caps.supported_qpts |=
 985                                 1 << IB_QPT_RAW_PACKET;
 986                         if (MLX5_CAP_QOS(mdev, packet_pacing_burst_bound) &&
 987                             MLX5_CAP_QOS(mdev, packet_pacing_typical_size))
 988                                 resp.packet_pacing_caps.cap_flags |=
 989                                         MLX5_IB_PP_SUPPORT_BURST;
 990                 }
 991                 resp.response_length += sizeof(resp.packet_pacing_caps);
 992         }
 993
 994         if (field_avail(typeof(resp), mlx5_ib_support_multi_pkt_send_wqes,
 995                         uhw->outlen)) {
 996                 if (MLX5_CAP_ETH(mdev, multi_pkt_send_wqe))
 997                         resp.mlx5_ib_support_multi_pkt_send_wqes =
 998                                 MLX5_IB_ALLOW_MPW;
 999
1000                 if (MLX5_CAP_ETH(mdev, enhanced_multi_pkt_send_wqe))
1001                         resp.mlx5_ib_support_multi_pkt_send_wqes |=
1002                                 MLX5_IB_SUPPORT_EMPW;
1003
1004                 resp.response_length +=
1005                         sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes);
1006         }
1007
1008         if (field_avail(typeof(resp), flags, uhw->outlen)) {
1009                 resp.response_length += sizeof(resp.flags);
1010
1011                 if (MLX5_CAP_GEN(mdev, cqe_compression_128))
1012                         resp.flags |=
1013                                 MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP;
1014
1015                 if (MLX5_CAP_GEN(mdev, cqe_128_always))
1016                         resp.flags |= MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_PAD;
1017         }
1018
1019         if (field_avail(typeof(resp), sw_parsing_caps,
1020                         uhw->outlen)) {
1021                 resp.response_length += sizeof(resp.sw_parsing_caps);
1022                 if (MLX5_CAP_ETH(mdev, swp)) {
1023                         resp.sw_parsing_caps.sw_parsing_offloads |=
1024                                 MLX5_IB_SW_PARSING;
1025
1026                         if (MLX5_CAP_ETH(mdev, swp_csum))
1027                                 resp.sw_parsing_caps.sw_parsing_offloads |=
1028                                         MLX5_IB_SW_PARSING_CSUM;
1029
1030                         if (MLX5_CAP_ETH(mdev, swp_lso))
1031                                 resp.sw_parsing_caps.sw_parsing_offloads |=
1032                                         MLX5_IB_SW_PARSING_LSO;
1033
1034                         if (resp.sw_parsing_caps.sw_parsing_offloads)
1035                                 resp.sw_parsing_caps.supported_qpts =
1036                                         BIT(IB_QPT_RAW_PACKET);
1037                 }
1038         }
1039
1040         if (field_avail(typeof(resp), striding_rq_caps, uhw->outlen) &&
1041             raw_support) {
1042                 resp.response_length += sizeof(resp.striding_rq_caps);
1043                 if (MLX5_CAP_GEN(mdev, striding_rq)) {
1044                         resp.striding_rq_caps.min_single_stride_log_num_of_bytes =
1045                                 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES;
1046                         resp.striding_rq_caps.max_single_stride_log_num_of_bytes =
1047                                 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES;
1048                         resp.striding_rq_caps.min_single_wqe_log_num_of_strides =
1049                                 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES;
1050                         resp.striding_rq_caps.max_single_wqe_log_num_of_strides =
1051                                 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES;
1052                         resp.striding_rq_caps.supported_qpts =
1053                                 BIT(IB_QPT_RAW_PACKET);
1054                 }
1055         }
1056
1057         if (field_avail(typeof(resp), tunnel_offloads_caps,
1058                         uhw->outlen)) {
1059                 resp.response_length += sizeof(resp.tunnel_offloads_caps);
1060                 if (MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan))
1061                         resp.tunnel_offloads_caps |=
1062                                 MLX5_IB_TUNNELED_OFFLOADS_VXLAN;
1063                 if (MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx))
1064                         resp.tunnel_offloads_caps |=
1065                                 MLX5_IB_TUNNELED_OFFLOADS_GENEVE;
1066                 if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre))
1067                         resp.tunnel_offloads_caps |=
1068                                 MLX5_IB_TUNNELED_OFFLOADS_GRE;
1069                 if (MLX5_CAP_GEN(mdev, flex_parser_protocols) &
1070                     MLX5_FLEX_PROTO_CW_MPLS_GRE)
1071                         resp.tunnel_offloads_caps |=
1072                                 MLX5_IB_TUNNELED_OFFLOADS_MPLS_GRE;
1073                 if (MLX5_CAP_GEN(mdev, flex_parser_protocols) &
1074                     MLX5_FLEX_PROTO_CW_MPLS_UDP)
1075                         resp.tunnel_offloads_caps |=
1076                                 MLX5_IB_TUNNELED_OFFLOADS_MPLS_UDP;
1077         }
1078
1079         if (uhw->outlen) {
1080                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
1081
1082                 if (err)
1083                         return err;
1084         }
1085
1086         return 0;
1087 }
1088
1089 enum mlx5_ib_width {
1090         MLX5_IB_WIDTH_1X        = 1 << 0,
1091         MLX5_IB_WIDTH_2X        = 1 << 1,
1092         MLX5_IB_WIDTH_4X        = 1 << 2,
1093         MLX5_IB_WIDTH_8X        = 1 << 3,
1094         MLX5_IB_WIDTH_12X       = 1 << 4
1095 };
1096
1097 static void translate_active_width(struct ib_device *ibdev, u8 active_width,
1098                                   u8 *ib_width)
1099 {
1100         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1101
1102         if (active_width & MLX5_IB_WIDTH_1X)
1103                 *ib_width = IB_WIDTH_1X;
1104         else if (active_width & MLX5_IB_WIDTH_4X)
1105                 *ib_width = IB_WIDTH_4X;
1106         else if (active_width & MLX5_IB_WIDTH_8X)
1107                 *ib_width = IB_WIDTH_8X;
1108         else if (active_width & MLX5_IB_WIDTH_12X)
1109                 *ib_width = IB_WIDTH_12X;
1110         else {
1111                 mlx5_ib_dbg(dev, "Invalid active_width %d, setting width to default value: 4x\n",
1112                             (int)active_width);
1113                 *ib_width = IB_WIDTH_4X;
1114         }
1115
1116         return;
1117 }
1118
1119 static int mlx5_mtu_to_ib_mtu(int mtu)
1120 {
1121         switch (mtu) {
1122         case 256: return 1;
1123         case 512: return 2;
1124         case 1024: return 3;
1125         case 2048: return 4;
1126         case 4096: return 5;
1127         default:
1128                 pr_warn("invalid mtu\n");
1129                 return -1;
1130         }
1131 }
1132
1133 enum ib_max_vl_num {
1134         __IB_MAX_VL_0           = 1,
1135         __IB_MAX_VL_0_1         = 2,
1136         __IB_MAX_VL_0_3         = 3,
1137         __IB_MAX_VL_0_7         = 4,
1138         __IB_MAX_VL_0_14        = 5,
1139 };
1140
1141 enum mlx5_vl_hw_cap {
1142         MLX5_VL_HW_0    = 1,
1143         MLX5_VL_HW_0_1  = 2,
1144         MLX5_VL_HW_0_2  = 3,
1145         MLX5_VL_HW_0_3  = 4,
1146         MLX5_VL_HW_0_4  = 5,
1147         MLX5_VL_HW_0_5  = 6,
1148         MLX5_VL_HW_0_6  = 7,
1149         MLX5_VL_HW_0_7  = 8,
1150         MLX5_VL_HW_0_14 = 15
1151 };
1152
1153 static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap,
1154                                 u8 *max_vl_num)
1155 {
1156         switch (vl_hw_cap) {
1157         case MLX5_VL_HW_0:
1158                 *max_vl_num = __IB_MAX_VL_0;
1159                 break;
1160         case MLX5_VL_HW_0_1:
1161                 *max_vl_num = __IB_MAX_VL_0_1;
1162                 break;
1163         case MLX5_VL_HW_0_3:
1164                 *max_vl_num = __IB_MAX_VL_0_3;
1165                 break;
1166         case MLX5_VL_HW_0_7:
1167                 *max_vl_num = __IB_MAX_VL_0_7;
1168                 break;
1169         case MLX5_VL_HW_0_14:
1170                 *max_vl_num = __IB_MAX_VL_0_14;
1171                 break;
1172
1173         default:
1174                 return -EINVAL;
1175         }
1176
1177         return 0;
1178 }
1179
1180 static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port,
1181                                struct ib_port_attr *props)
1182 {
1183         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1184         struct mlx5_core_dev *mdev = dev->mdev;
1185         struct mlx5_hca_vport_context *rep;
1186         u16 max_mtu;
1187         u16 oper_mtu;
1188         int err;
1189         u8 ib_link_width_oper;
1190         u8 vl_hw_cap;
1191
1192         rep = kzalloc(sizeof(*rep), GFP_KERNEL);
1193         if (!rep) {
1194                 err = -ENOMEM;
1195                 goto out;
1196         }
1197
1198         /* props being zeroed by the caller, avoid zeroing it here */
1199
1200         err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep);
1201         if (err)
1202                 goto out;
1203
1204         props->lid              = rep->lid;
1205         props->lmc              = rep->lmc;
1206         props->sm_lid           = rep->sm_lid;
1207         props->sm_sl            = rep->sm_sl;
1208         props->state            = rep->vport_state;
1209         props->phys_state       = rep->port_physical_state;
1210         props->port_cap_flags   = rep->cap_mask1;
1211         props->gid_tbl_len      = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size));
1212         props->max_msg_sz       = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
1213         props->pkey_tbl_len     = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size));
1214         props->bad_pkey_cntr    = rep->pkey_violation_counter;
1215         props->qkey_viol_cntr   = rep->qkey_violation_counter;
1216         props->subnet_timeout   = rep->subnet_timeout;
1217         props->init_type_reply  = rep->init_type_reply;
1218
1219         err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port);
1220         if (err)
1221                 goto out;
1222
1223         translate_active_width(ibdev, ib_link_width_oper, &props->active_width);
1224
1225         err = mlx5_query_port_ib_proto_oper(mdev, &props->active_speed, port);
1226         if (err)
1227                 goto out;
1228
1229         mlx5_query_port_max_mtu(mdev, &max_mtu, port);
1230
1231         props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu);
1232
1233         mlx5_query_port_oper_mtu(mdev, &oper_mtu, port);
1234
1235         props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu);
1236
1237         err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port);
1238         if (err)
1239                 goto out;
1240
1241         err = translate_max_vl_num(ibdev, vl_hw_cap,
1242                                    &props->max_vl_num);
1243 out:
1244         kfree(rep);
1245         return err;
1246 }
1247
1248 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
1249                        struct ib_port_attr *props)
1250 {
1251         unsigned int count;
1252         int ret;
1253
1254         switch (mlx5_get_vport_access_method(ibdev)) {
1255         case MLX5_VPORT_ACCESS_METHOD_MAD:
1256                 ret = mlx5_query_mad_ifc_port(ibdev, port, props);
1257                 break;
1258
1259         case MLX5_VPORT_ACCESS_METHOD_HCA:
1260                 ret = mlx5_query_hca_port(ibdev, port, props);
1261                 break;
1262
1263         case MLX5_VPORT_ACCESS_METHOD_NIC:
1264                 ret = mlx5_query_port_roce(ibdev, port, props);
1265                 break;
1266
1267         default:
1268                 ret = -EINVAL;
1269         }
1270
1271         if (!ret && props) {
1272                 struct mlx5_ib_dev *dev = to_mdev(ibdev);
1273                 struct mlx5_core_dev *mdev;
1274                 bool put_mdev = true;
1275
1276                 mdev = mlx5_ib_get_native_port_mdev(dev, port, NULL);
1277                 if (!mdev) {
1278                         /* If the port isn't affiliated yet query the master.
1279                          * The master and slave will have the same values.
1280                          */
1281                         mdev = dev->mdev;
1282                         port = 1;
1283                         put_mdev = false;
1284                 }
1285                 count = mlx5_core_reserved_gids_count(mdev);
1286                 if (put_mdev)
1287                         mlx5_ib_put_native_port_mdev(dev, port);
1288                 props->gid_tbl_len -= count;
1289         }
1290         return ret;
1291 }
1292
1293 static int mlx5_ib_rep_query_port(struct ib_device *ibdev, u8 port,
1294                                   struct ib_port_attr *props)
1295 {
1296         int ret;
1297
1298         /* Only link layer == ethernet is valid for representors */
1299         ret = mlx5_query_port_roce(ibdev, port, props);
1300         if (ret || !props)
1301                 return ret;
1302
1303         /* We don't support GIDS */
1304         props->gid_tbl_len = 0;
1305
1306         return ret;
1307 }
1308
1309 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
1310                              union ib_gid *gid)
1311 {
1312         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1313         struct mlx5_core_dev *mdev = dev->mdev;
1314
1315         switch (mlx5_get_vport_access_method(ibdev)) {
1316         case MLX5_VPORT_ACCESS_METHOD_MAD:
1317                 return mlx5_query_mad_ifc_gids(ibdev, port, index, gid);
1318
1319         case MLX5_VPORT_ACCESS_METHOD_HCA:
1320                 return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid);
1321
1322         default:
1323                 return -EINVAL;
1324         }
1325
1326 }
1327
1328 static int mlx5_query_hca_nic_pkey(struct ib_device *ibdev, u8 port,
1329                                    u16 index, u16 *pkey)
1330 {
1331         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1332         struct mlx5_core_dev *mdev;
1333         bool put_mdev = true;
1334         u8 mdev_port_num;
1335         int err;
1336
1337         mdev = mlx5_ib_get_native_port_mdev(dev, port, &mdev_port_num);
1338         if (!mdev) {
1339                 /* The port isn't affiliated yet, get the PKey from the master
1340                  * port. For RoCE the PKey tables will be the same.
1341                  */
1342                 put_mdev = false;
1343                 mdev = dev->mdev;
1344                 mdev_port_num = 1;
1345         }
1346
1347         err = mlx5_query_hca_vport_pkey(mdev, 0, mdev_port_num, 0,
1348                                         index, pkey);
1349         if (put_mdev)
1350                 mlx5_ib_put_native_port_mdev(dev, port);
1351
1352         return err;
1353 }
1354
1355 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
1356                               u16 *pkey)
1357 {
1358         switch (mlx5_get_vport_access_method(ibdev)) {
1359         case MLX5_VPORT_ACCESS_METHOD_MAD:
1360                 return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey);
1361
1362         case MLX5_VPORT_ACCESS_METHOD_HCA:
1363         case MLX5_VPORT_ACCESS_METHOD_NIC:
1364                 return mlx5_query_hca_nic_pkey(ibdev, port, index, pkey);
1365         default:
1366                 return -EINVAL;
1367         }
1368 }
1369
1370 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
1371                                  struct ib_device_modify *props)
1372 {
1373         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1374         struct mlx5_reg_node_desc in;
1375         struct mlx5_reg_node_desc out;
1376         int err;
1377
1378         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
1379                 return -EOPNOTSUPP;
1380
1381         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1382                 return 0;
1383
1384         /*
1385          * If possible, pass node desc to FW, so it can generate
1386          * a 144 trap.  If cmd fails, just ignore.
1387          */
1388         memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1389         err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
1390                                    sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
1391         if (err)
1392                 return err;
1393
1394         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1395
1396         return err;
1397 }
1398
1399 static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u8 port_num, u32 mask,
1400                                 u32 value)
1401 {
1402         struct mlx5_hca_vport_context ctx = {};
1403         struct mlx5_core_dev *mdev;
1404         u8 mdev_port_num;
1405         int err;
1406
1407         mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
1408         if (!mdev)
1409                 return -ENODEV;
1410
1411         err = mlx5_query_hca_vport_context(mdev, 0, mdev_port_num, 0, &ctx);
1412         if (err)
1413                 goto out;
1414
1415         if (~ctx.cap_mask1_perm & mask) {
1416                 mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n",
1417                              mask, ctx.cap_mask1_perm);
1418                 err = -EINVAL;
1419                 goto out;
1420         }
1421
1422         ctx.cap_mask1 = value;
1423         ctx.cap_mask1_perm = mask;
1424         err = mlx5_core_modify_hca_vport_context(mdev, 0, mdev_port_num,
1425                                                  0, &ctx);
1426
1427 out:
1428         mlx5_ib_put_native_port_mdev(dev, port_num);
1429
1430         return err;
1431 }
1432
1433 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1434                                struct ib_port_modify *props)
1435 {
1436         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1437         struct ib_port_attr attr;
1438         u32 tmp;
1439         int err;
1440         u32 change_mask;
1441         u32 value;
1442         bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) ==
1443                       IB_LINK_LAYER_INFINIBAND);
1444
1445         /* CM layer calls ib_modify_port() regardless of the link layer. For
1446          * Ethernet ports, qkey violation and Port capabilities are meaningless.
1447          */
1448         if (!is_ib)
1449                 return 0;
1450
1451         if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) {
1452                 change_mask = props->clr_port_cap_mask | props->set_port_cap_mask;
1453                 value = ~props->clr_port_cap_mask | props->set_port_cap_mask;
1454                 return set_port_caps_atomic(dev, port, change_mask, value);
1455         }
1456
1457         mutex_lock(&dev->cap_mask_mutex);
1458
1459         err = ib_query_port(ibdev, port, &attr);
1460         if (err)
1461                 goto out;
1462
1463         tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
1464                 ~props->clr_port_cap_mask;
1465
1466         err = mlx5_set_port_caps(dev->mdev, port, tmp);
1467
1468 out:
1469         mutex_unlock(&dev->cap_mask_mutex);
1470         return err;
1471 }
1472
1473 static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps)
1474 {
1475         mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n",
1476                     caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n");
1477 }
1478
1479 static u16 calc_dynamic_bfregs(int uars_per_sys_page)
1480 {
1481         /* Large page with non 4k uar support might limit the dynamic size */
1482         if (uars_per_sys_page == 1  && PAGE_SIZE > 4096)
1483                 return MLX5_MIN_DYN_BFREGS;
1484
1485         return MLX5_MAX_DYN_BFREGS;
1486 }
1487
1488 static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k,
1489                              struct mlx5_ib_alloc_ucontext_req_v2 *req,
1490                              struct mlx5_bfreg_info *bfregi)
1491 {
1492         int uars_per_sys_page;
1493         int bfregs_per_sys_page;
1494         int ref_bfregs = req->total_num_bfregs;
1495
1496         if (req->total_num_bfregs == 0)
1497                 return -EINVAL;
1498
1499         BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE);
1500         BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE);
1501
1502         if (req->total_num_bfregs > MLX5_MAX_BFREGS)
1503                 return -ENOMEM;
1504
1505         uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k);
1506         bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR;
1507         /* This holds the required static allocation asked by the user */
1508         req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page);
1509         if (req->num_low_latency_bfregs > req->total_num_bfregs - 1)
1510                 return -EINVAL;
1511
1512         bfregi->num_static_sys_pages = req->total_num_bfregs / bfregs_per_sys_page;
1513         bfregi->num_dyn_bfregs = ALIGN(calc_dynamic_bfregs(uars_per_sys_page), bfregs_per_sys_page);
1514         bfregi->total_num_bfregs = req->total_num_bfregs + bfregi->num_dyn_bfregs;
1515         bfregi->num_sys_pages = bfregi->total_num_bfregs / bfregs_per_sys_page;
1516
1517         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",
1518                     MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no",
1519                     lib_uar_4k ? "yes" : "no", ref_bfregs,
1520                     req->total_num_bfregs, bfregi->total_num_bfregs,
1521                     bfregi->num_sys_pages);
1522
1523         return 0;
1524 }
1525
1526 static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
1527 {
1528         struct mlx5_bfreg_info *bfregi;
1529         int err;
1530         int i;
1531
1532         bfregi = &context->bfregi;
1533         for (i = 0; i < bfregi->num_static_sys_pages; i++) {
1534                 err = mlx5_cmd_alloc_uar(dev->mdev, &bfregi->sys_pages[i]);
1535                 if (err)
1536                         goto error;
1537
1538                 mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]);
1539         }
1540
1541         for (i = bfregi->num_static_sys_pages; i < bfregi->num_sys_pages; i++)
1542                 bfregi->sys_pages[i] = MLX5_IB_INVALID_UAR_INDEX;
1543
1544         return 0;
1545
1546 error:
1547         for (--i; i >= 0; i--)
1548                 if (mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]))
1549                         mlx5_ib_warn(dev, "failed to free uar %d\n", i);
1550
1551         return err;
1552 }
1553
1554 static void deallocate_uars(struct mlx5_ib_dev *dev,
1555                             struct mlx5_ib_ucontext *context)
1556 {
1557         struct mlx5_bfreg_info *bfregi;
1558         int i;
1559
1560         bfregi = &context->bfregi;
1561         for (i = 0; i < bfregi->num_sys_pages; i++)
1562                 if (i < bfregi->num_static_sys_pages ||
1563                     bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX)
1564                         mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]);
1565 }
1566
1567 int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev, bool td, bool qp)
1568 {
1569         int err = 0;
1570
1571         mutex_lock(&dev->lb.mutex);
1572         if (td)
1573                 dev->lb.user_td++;
1574         if (qp)
1575                 dev->lb.qps++;
1576
1577         if (dev->lb.user_td == 2 ||
1578             dev->lb.qps == 1) {
1579                 if (!dev->lb.enabled) {
1580                         err = mlx5_nic_vport_update_local_lb(dev->mdev, true);
1581                         dev->lb.enabled = true;
1582                 }
1583         }
1584
1585         mutex_unlock(&dev->lb.mutex);
1586
1587         return err;
1588 }
1589
1590 void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev, bool td, bool qp)
1591 {
1592         mutex_lock(&dev->lb.mutex);
1593         if (td)
1594                 dev->lb.user_td--;
1595         if (qp)
1596                 dev->lb.qps--;
1597
1598         if (dev->lb.user_td == 1 &&
1599             dev->lb.qps == 0) {
1600                 if (dev->lb.enabled) {
1601                         mlx5_nic_vport_update_local_lb(dev->mdev, false);
1602                         dev->lb.enabled = false;
1603                 }
1604         }
1605
1606         mutex_unlock(&dev->lb.mutex);
1607 }
1608
1609 static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn,
1610                                           u16 uid)
1611 {
1612         int err;
1613
1614         if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1615                 return 0;
1616
1617         err = mlx5_cmd_alloc_transport_domain(dev->mdev, tdn, uid);
1618         if (err)
1619                 return err;
1620
1621         if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
1622             (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
1623              !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
1624                 return err;
1625
1626         return mlx5_ib_enable_lb(dev, true, false);
1627 }
1628
1629 static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn,
1630                                              u16 uid)
1631 {
1632         if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
1633                 return;
1634
1635         mlx5_cmd_dealloc_transport_domain(dev->mdev, tdn, uid);
1636
1637         if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
1638             (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
1639              !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
1640                 return;
1641
1642         mlx5_ib_disable_lb(dev, true, false);
1643 }
1644
1645 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
1646                                                   struct ib_udata *udata)
1647 {
1648         struct mlx5_ib_dev *dev = to_mdev(ibdev);
1649         struct mlx5_ib_alloc_ucontext_req_v2 req = {};
1650         struct mlx5_ib_alloc_ucontext_resp resp = {};
1651         struct mlx5_core_dev *mdev = dev->mdev;
1652         struct mlx5_ib_ucontext *context;
1653         struct mlx5_bfreg_info *bfregi;
1654         int ver;
1655         int err;
1656         size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2,
1657                                      max_cqe_version);
1658         u32 dump_fill_mkey;
1659         bool lib_uar_4k;
1660
1661         if (!dev->ib_active)
1662                 return ERR_PTR(-EAGAIN);
1663
1664         if (udata->inlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
1665                 ver = 0;
1666         else if (udata->inlen >= min_req_v2)
1667                 ver = 2;
1668         else
1669                 return ERR_PTR(-EINVAL);
1670
1671         err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req)));
1672         if (err)
1673                 return ERR_PTR(err);
1674
1675         if (req.flags & ~MLX5_IB_ALLOC_UCTX_DEVX)
1676                 return ERR_PTR(-EOPNOTSUPP);
1677
1678         if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2)
1679                 return ERR_PTR(-EOPNOTSUPP);
1680
1681         req.total_num_bfregs = ALIGN(req.total_num_bfregs,
1682                                     MLX5_NON_FP_BFREGS_PER_UAR);
1683         if (req.num_low_latency_bfregs > req.total_num_bfregs - 1)
1684                 return ERR_PTR(-EINVAL);
1685
1686         resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp);
1687         if (mlx5_core_is_pf(dev->mdev) && MLX5_CAP_GEN(dev->mdev, bf))
1688                 resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size);
1689         resp.cache_line_size = cache_line_size();
1690         resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq);
1691         resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq);
1692         resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
1693         resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
1694         resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
1695         resp.cqe_version = min_t(__u8,
1696                                  (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version),
1697                                  req.max_cqe_version);
1698         resp.log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1699                                 MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT;
1700         resp.num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1701                                         MLX5_CAP_GEN(dev->mdev, num_of_uars_per_page) : 1;
1702         resp.response_length = min(offsetof(typeof(resp), response_length) +
1703                                    sizeof(resp.response_length), udata->outlen);
1704
1705         if (mlx5_accel_ipsec_device_caps(dev->mdev) & MLX5_ACCEL_IPSEC_CAP_DEVICE) {
1706                 if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_EGRESS))
1707                         resp.flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM;
1708                 if (mlx5_accel_ipsec_device_caps(dev->mdev) & MLX5_ACCEL_IPSEC_CAP_REQUIRED_METADATA)
1709                         resp.flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_REQ_METADATA;
1710                 if (MLX5_CAP_FLOWTABLE(dev->mdev, flow_table_properties_nic_receive.ft_field_support.outer_esp_spi))
1711                         resp.flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_SPI_STEERING;
1712                 if (mlx5_accel_ipsec_device_caps(dev->mdev) & MLX5_ACCEL_IPSEC_CAP_TX_IV_IS_ESN)
1713                         resp.flow_action_flags |= MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_TX_IV_IS_ESN;
1714                 /* MLX5_USER_ALLOC_UCONTEXT_FLOW_ACTION_FLAGS_ESP_AES_GCM_FULL_OFFLOAD is currently always 0 */
1715         }
1716
1717         context = kzalloc(sizeof(*context), GFP_KERNEL);
1718         if (!context)
1719                 return ERR_PTR(-ENOMEM);
1720
1721         lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR;
1722         bfregi = &context->bfregi;
1723
1724         /* updates req->total_num_bfregs */
1725         err = calc_total_bfregs(dev, lib_uar_4k, &req, bfregi);
1726         if (err)
1727                 goto out_ctx;
1728
1729         mutex_init(&bfregi->lock);
1730         bfregi->lib_uar_4k = lib_uar_4k;
1731         bfregi->count = kcalloc(bfregi->total_num_bfregs, sizeof(*bfregi->count),
1732                                 GFP_KERNEL);
1733         if (!bfregi->count) {
1734                 err = -ENOMEM;
1735                 goto out_ctx;
1736         }
1737
1738         bfregi->sys_pages = kcalloc(bfregi->num_sys_pages,
1739                                     sizeof(*bfregi->sys_pages),
1740                                     GFP_KERNEL);
1741         if (!bfregi->sys_pages) {
1742                 err = -ENOMEM;
1743                 goto out_count;
1744         }
1745
1746         err = allocate_uars(dev, context);
1747         if (err)
1748                 goto out_sys_pages;
1749
1750 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1751         context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
1752 #endif
1753
1754         if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) {
1755                 err = mlx5_ib_devx_create(dev);
1756                 if (err < 0)
1757                         goto out_uars;
1758                 context->devx_uid = err;
1759         }
1760
1761         err = mlx5_ib_alloc_transport_domain(dev, &context->tdn,
1762                                              context->devx_uid);
1763         if (err)
1764                 goto out_devx;
1765
1766         if (MLX5_CAP_GEN(dev->mdev, dump_fill_mkey)) {
1767                 err = mlx5_cmd_dump_fill_mkey(dev->mdev, &dump_fill_mkey);
1768                 if (err)
1769                         goto out_mdev;
1770         }
1771
1772         INIT_LIST_HEAD(&context->db_page_list);
1773         mutex_init(&context->db_page_mutex);
1774
1775         resp.tot_bfregs = req.total_num_bfregs;
1776         resp.num_ports = dev->num_ports;
1777
1778         if (field_avail(typeof(resp), cqe_version, udata->outlen))
1779                 resp.response_length += sizeof(resp.cqe_version);
1780
1781         if (field_avail(typeof(resp), cmds_supp_uhw, udata->outlen)) {
1782                 resp.cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE |
1783                                       MLX5_USER_CMDS_SUPP_UHW_CREATE_AH;
1784                 resp.response_length += sizeof(resp.cmds_supp_uhw);
1785         }
1786
1787         if (field_avail(typeof(resp), eth_min_inline, udata->outlen)) {
1788                 if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) {
1789                         mlx5_query_min_inline(dev->mdev, &resp.eth_min_inline);
1790                         resp.eth_min_inline++;
1791                 }
1792                 resp.response_length += sizeof(resp.eth_min_inline);
1793         }
1794
1795         if (field_avail(typeof(resp), clock_info_versions, udata->outlen)) {
1796                 if (mdev->clock_info)
1797                         resp.clock_info_versions = BIT(MLX5_IB_CLOCK_INFO_V1);
1798                 resp.response_length += sizeof(resp.clock_info_versions);
1799         }
1800
1801         /*
1802          * We don't want to expose information from the PCI bar that is located
1803          * after 4096 bytes, so if the arch only supports larger pages, let's
1804          * pretend we don't support reading the HCA's core clock. This is also
1805          * forced by mmap function.
1806          */
1807         if (field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) {
1808                 if (PAGE_SIZE <= 4096) {
1809                         resp.comp_mask |=
1810                                 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET;
1811                         resp.hca_core_clock_offset =
1812                                 offsetof(struct mlx5_init_seg, internal_timer_h) % PAGE_SIZE;
1813                 }
1814                 resp.response_length += sizeof(resp.hca_core_clock_offset);
1815         }
1816
1817         if (field_avail(typeof(resp), log_uar_size, udata->outlen))
1818                 resp.response_length += sizeof(resp.log_uar_size);
1819
1820         if (field_avail(typeof(resp), num_uars_per_page, udata->outlen))
1821                 resp.response_length += sizeof(resp.num_uars_per_page);
1822
1823         if (field_avail(typeof(resp), num_dyn_bfregs, udata->outlen)) {
1824                 resp.num_dyn_bfregs = bfregi->num_dyn_bfregs;
1825                 resp.response_length += sizeof(resp.num_dyn_bfregs);
1826         }
1827
1828         if (field_avail(typeof(resp), dump_fill_mkey, udata->outlen)) {
1829                 if (MLX5_CAP_GEN(dev->mdev, dump_fill_mkey)) {
1830                         resp.dump_fill_mkey = dump_fill_mkey;
1831                         resp.comp_mask |=
1832                                 MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_DUMP_FILL_MKEY;
1833                 }
1834                 resp.response_length += sizeof(resp.dump_fill_mkey);
1835         }
1836
1837         err = ib_copy_to_udata(udata, &resp, resp.response_length);
1838         if (err)
1839                 goto out_mdev;
1840
1841         bfregi->ver = ver;
1842         bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs;
1843         context->cqe_version = resp.cqe_version;
1844         context->lib_caps = req.lib_caps;
1845         print_lib_caps(dev, context->lib_caps);
1846
1847         if (mlx5_lag_is_active(dev->mdev)) {
1848                 u8 port = mlx5_core_native_port_num(dev->mdev);
1849
1850                 atomic_set(&context->tx_port_affinity,
1851                            atomic_add_return(
1852                                    1, &dev->roce[port].tx_port_affinity));
1853         }
1854
1855         return &context->ibucontext;
1856
1857 out_mdev:
1858         mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid);
1859 out_devx:
1860         if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX)
1861                 mlx5_ib_devx_destroy(dev, context->devx_uid);
1862
1863 out_uars:
1864         deallocate_uars(dev, context);
1865
1866 out_sys_pages:
1867         kfree(bfregi->sys_pages);
1868
1869 out_count:
1870         kfree(bfregi->count);
1871
1872 out_ctx:
1873         kfree(context);
1874
1875         return ERR_PTR(err);
1876 }
1877
1878 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1879 {
1880         struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
1881         struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
1882         struct mlx5_bfreg_info *bfregi;
1883
1884 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1885         /* All umem's must be destroyed before destroying the ucontext. */
1886         mutex_lock(&ibcontext->per_mm_list_lock);
1887         WARN_ON(!list_empty(&ibcontext->per_mm_list));
1888         mutex_unlock(&ibcontext->per_mm_list_lock);
1889 #endif
1890
1891         bfregi = &context->bfregi;
1892         mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid);
1893
1894         if (context->devx_uid)
1895                 mlx5_ib_devx_destroy(dev, context->devx_uid);
1896
1897         deallocate_uars(dev, context);
1898         kfree(bfregi->sys_pages);
1899         kfree(bfregi->count);
1900         kfree(context);
1901
1902         return 0;
1903 }
1904
1905 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev,
1906                                  int uar_idx)
1907 {
1908         int fw_uars_per_page;
1909
1910         fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1;
1911
1912         return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + uar_idx / fw_uars_per_page;
1913 }
1914
1915 static int get_command(unsigned long offset)
1916 {
1917         return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
1918 }
1919
1920 static int get_arg(unsigned long offset)
1921 {
1922         return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
1923 }
1924
1925 static int get_index(unsigned long offset)
1926 {
1927         return get_arg(offset);
1928 }
1929
1930 /* Index resides in an extra byte to enable larger values than 255 */
1931 static int get_extended_index(unsigned long offset)
1932 {
1933         return get_arg(offset) | ((offset >> 16) & 0xff) << 8;
1934 }
1935
1936
1937 static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1938 {
1939 }
1940
1941 static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd)
1942 {
1943         switch (cmd) {
1944         case MLX5_IB_MMAP_WC_PAGE:
1945                 return "WC";
1946         case MLX5_IB_MMAP_REGULAR_PAGE:
1947                 return "best effort WC";
1948         case MLX5_IB_MMAP_NC_PAGE:
1949                 return "NC";
1950         case MLX5_IB_MMAP_DEVICE_MEM:
1951                 return "Device Memory";
1952         default:
1953                 return NULL;
1954         }
1955 }
1956
1957 static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev,
1958                                         struct vm_area_struct *vma,
1959                                         struct mlx5_ib_ucontext *context)
1960 {
1961         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1962                 return -EINVAL;
1963
1964         if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1)
1965                 return -EOPNOTSUPP;
1966
1967         if (vma->vm_flags & VM_WRITE)
1968                 return -EPERM;
1969
1970         if (!dev->mdev->clock_info_page)
1971                 return -EOPNOTSUPP;
1972
1973         return rdma_user_mmap_page(&context->ibucontext, vma,
1974                                    dev->mdev->clock_info_page, PAGE_SIZE);
1975 }
1976
1977 static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd,
1978                     struct vm_area_struct *vma,
1979                     struct mlx5_ib_ucontext *context)
1980 {
1981         struct mlx5_bfreg_info *bfregi = &context->bfregi;
1982         int err;
1983         unsigned long idx;
1984         phys_addr_t pfn;
1985         pgprot_t prot;
1986         u32 bfreg_dyn_idx = 0;
1987         u32 uar_index;
1988         int dyn_uar = (cmd == MLX5_IB_MMAP_ALLOC_WC);
1989         int max_valid_idx = dyn_uar ? bfregi->num_sys_pages :
1990                                 bfregi->num_static_sys_pages;
1991
1992         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1993                 return -EINVAL;
1994
1995         if (dyn_uar)
1996                 idx = get_extended_index(vma->vm_pgoff) + bfregi->num_static_sys_pages;
1997         else
1998                 idx = get_index(vma->vm_pgoff);
1999
2000         if (idx >= max_valid_idx) {
2001                 mlx5_ib_warn(dev, "invalid uar index %lu, max=%d\n",
2002                              idx, max_valid_idx);
2003                 return -EINVAL;
2004         }
2005
2006         switch (cmd) {
2007         case MLX5_IB_MMAP_WC_PAGE:
2008         case MLX5_IB_MMAP_ALLOC_WC:
2009 /* Some architectures don't support WC memory */
2010 #if defined(CONFIG_X86)
2011                 if (!pat_enabled())
2012                         return -EPERM;
2013 #elif !(defined(CONFIG_PPC) || (defined(CONFIG_ARM) && defined(CONFIG_MMU)))
2014                         return -EPERM;
2015 #endif
2016         /* fall through */
2017         case MLX5_IB_MMAP_REGULAR_PAGE:
2018                 /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */
2019                 prot = pgprot_writecombine(vma->vm_page_prot);
2020                 break;
2021         case MLX5_IB_MMAP_NC_PAGE:
2022                 prot = pgprot_noncached(vma->vm_page_prot);
2023                 break;
2024         default:
2025                 return -EINVAL;
2026         }
2027
2028         if (dyn_uar) {
2029                 int uars_per_page;
2030
2031                 uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k);
2032                 bfreg_dyn_idx = idx * (uars_per_page * MLX5_NON_FP_BFREGS_PER_UAR);
2033                 if (bfreg_dyn_idx >= bfregi->total_num_bfregs) {
2034                         mlx5_ib_warn(dev, "invalid bfreg_dyn_idx %u, max=%u\n",
2035                                      bfreg_dyn_idx, bfregi->total_num_bfregs);
2036                         return -EINVAL;
2037                 }
2038
2039                 mutex_lock(&bfregi->lock);
2040                 /* Fail if uar already allocated, first bfreg index of each
2041                  * page holds its count.
2042                  */
2043                 if (bfregi->count[bfreg_dyn_idx]) {
2044                         mlx5_ib_warn(dev, "wrong offset, idx %lu is busy, bfregn=%u\n", idx, bfreg_dyn_idx);
2045                         mutex_unlock(&bfregi->lock);
2046                         return -EINVAL;
2047                 }
2048
2049                 bfregi->count[bfreg_dyn_idx]++;
2050                 mutex_unlock(&bfregi->lock);
2051
2052                 err = mlx5_cmd_alloc_uar(dev->mdev, &uar_index);
2053                 if (err) {
2054                         mlx5_ib_warn(dev, "UAR alloc failed\n");
2055                         goto free_bfreg;
2056                 }
2057         } else {
2058                 uar_index = bfregi->sys_pages[idx];
2059         }
2060
2061         pfn = uar_index2pfn(dev, uar_index);
2062         mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn);
2063
2064         err = rdma_user_mmap_io(&context->ibucontext, vma, pfn, PAGE_SIZE,
2065                                 prot);
2066         if (err) {
2067                 mlx5_ib_err(dev,
2068                             "rdma_user_mmap_io failed with error=%d, mmap_cmd=%s\n",
2069                             err, mmap_cmd2str(cmd));
2070                 goto err;
2071         }
2072
2073         if (dyn_uar)
2074                 bfregi->sys_pages[idx] = uar_index;
2075         return 0;
2076
2077 err:
2078         if (!dyn_uar)
2079                 return err;
2080
2081         mlx5_cmd_free_uar(dev->mdev, idx);
2082
2083 free_bfreg:
2084         mlx5_ib_free_bfreg(dev, bfregi, bfreg_dyn_idx);
2085
2086         return err;
2087 }
2088
2089 static int dm_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
2090 {
2091         struct mlx5_ib_ucontext *mctx = to_mucontext(context);
2092         struct mlx5_ib_dev *dev = to_mdev(context->device);
2093         u16 page_idx = get_extended_index(vma->vm_pgoff);
2094         size_t map_size = vma->vm_end - vma->vm_start;
2095         u32 npages = map_size >> PAGE_SHIFT;
2096         phys_addr_t pfn;
2097
2098         if (find_next_zero_bit(mctx->dm_pages, page_idx + npages, page_idx) !=
2099             page_idx + npages)
2100                 return -EINVAL;
2101
2102         pfn = ((pci_resource_start(dev->mdev->pdev, 0) +
2103               MLX5_CAP64_DEV_MEM(dev->mdev, memic_bar_start_addr)) >>
2104               PAGE_SHIFT) +
2105               page_idx;
2106         return rdma_user_mmap_io(context, vma, pfn, map_size,
2107                                  pgprot_writecombine(vma->vm_page_prot));
2108 }
2109
2110 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
2111 {
2112         struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
2113         struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
2114         unsigned long command;
2115         phys_addr_t pfn;
2116
2117         command = get_command(vma->vm_pgoff);
2118         switch (command) {
2119         case MLX5_IB_MMAP_WC_PAGE:
2120         case MLX5_IB_MMAP_NC_PAGE:
2121         case MLX5_IB_MMAP_REGULAR_PAGE:
2122         case MLX5_IB_MMAP_ALLOC_WC:
2123                 return uar_mmap(dev, command, vma, context);
2124
2125         case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
2126                 return -ENOSYS;
2127
2128         case MLX5_IB_MMAP_CORE_CLOCK:
2129                 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
2130                         return -EINVAL;
2131
2132                 if (vma->vm_flags & VM_WRITE)
2133                         return -EPERM;
2134
2135                 /* Don't expose to user-space information it shouldn't have */
2136                 if (PAGE_SIZE > 4096)
2137                         return -EOPNOTSUPP;
2138
2139                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
2140                 pfn = (dev->mdev->iseg_base +
2141                        offsetof(struct mlx5_init_seg, internal_timer_h)) >>
2142                         PAGE_SHIFT;
2143                 if (io_remap_pfn_range(vma, vma->vm_start, pfn,
2144                                        PAGE_SIZE, vma->vm_page_prot))
2145                         return -EAGAIN;
2146                 break;
2147         case MLX5_IB_MMAP_CLOCK_INFO:
2148                 return mlx5_ib_mmap_clock_info_page(dev, vma, context);
2149
2150         case MLX5_IB_MMAP_DEVICE_MEM:
2151                 return dm_mmap(ibcontext, vma);
2152
2153         default:
2154                 return -EINVAL;
2155         }
2156
2157         return 0;
2158 }
2159
2160 struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev,
2161                                struct ib_ucontext *context,
2162                                struct ib_dm_alloc_attr *attr,
2163                                struct uverbs_attr_bundle *attrs)
2164 {
2165         u64 act_size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE);
2166         struct mlx5_memic *memic = &to_mdev(ibdev)->memic;
2167         phys_addr_t memic_addr;
2168         struct mlx5_ib_dm *dm;
2169         u64 start_offset;
2170         u32 page_idx;
2171         int err;
2172
2173         dm = kzalloc(sizeof(*dm), GFP_KERNEL);
2174         if (!dm)
2175                 return ERR_PTR(-ENOMEM);
2176
2177         mlx5_ib_dbg(to_mdev(ibdev), "alloc_memic req: user_length=0x%llx act_length=0x%llx log_alignment=%d\n",
2178                     attr->length, act_size, attr->alignment);
2179
2180         err = mlx5_cmd_alloc_memic(memic, &memic_addr,
2181                                    act_size, attr->alignment);
2182         if (err)
2183                 goto err_free;
2184
2185         start_offset = memic_addr & ~PAGE_MASK;
2186         page_idx = (memic_addr - pci_resource_start(memic->dev->pdev, 0) -
2187                     MLX5_CAP64_DEV_MEM(memic->dev, memic_bar_start_addr)) >>
2188                     PAGE_SHIFT;
2189
2190         err = uverbs_copy_to(attrs,
2191                              MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET,
2192                              &start_offset, sizeof(start_offset));
2193         if (err)
2194                 goto err_dealloc;
2195
2196         err = uverbs_copy_to(attrs,
2197                              MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX,
2198                              &page_idx, sizeof(page_idx));
2199         if (err)
2200                 goto err_dealloc;
2201
2202         bitmap_set(to_mucontext(context)->dm_pages, page_idx,
2203                    DIV_ROUND_UP(act_size, PAGE_SIZE));
2204
2205         dm->dev_addr = memic_addr;
2206
2207         return &dm->ibdm;
2208
2209 err_dealloc:
2210         mlx5_cmd_dealloc_memic(memic, memic_addr,
2211                                act_size);
2212 err_free:
2213         kfree(dm);
2214         return ERR_PTR(err);
2215 }
2216
2217 int mlx5_ib_dealloc_dm(struct ib_dm *ibdm)
2218 {
2219         struct mlx5_memic *memic = &to_mdev(ibdm->device)->memic;
2220         struct mlx5_ib_dm *dm = to_mdm(ibdm);
2221         u64 act_size = roundup(dm->ibdm.length, MLX5_MEMIC_BASE_SIZE);
2222         u32 page_idx;
2223         int ret;
2224
2225         ret = mlx5_cmd_dealloc_memic(memic, dm->dev_addr, act_size);
2226         if (ret)
2227                 return ret;
2228
2229         page_idx = (dm->dev_addr - pci_resource_start(memic->dev->pdev, 0) -
2230                     MLX5_CAP64_DEV_MEM(memic->dev, memic_bar_start_addr)) >>
2231                     PAGE_SHIFT;
2232         bitmap_clear(to_mucontext(ibdm->uobject->context)->dm_pages,
2233                      page_idx,
2234                      DIV_ROUND_UP(act_size, PAGE_SIZE));
2235
2236         kfree(dm);
2237
2238         return 0;
2239 }
2240
2241 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
2242                                       struct ib_ucontext *context,
2243                                       struct ib_udata *udata)
2244 {
2245         struct mlx5_ib_alloc_pd_resp resp;
2246         struct mlx5_ib_pd *pd;
2247         int err;
2248         u32 out[MLX5_ST_SZ_DW(alloc_pd_out)] = {};
2249         u32 in[MLX5_ST_SZ_DW(alloc_pd_in)]   = {};
2250         u16 uid = 0;
2251
2252         pd = kmalloc(sizeof(*pd), GFP_KERNEL);
2253         if (!pd)
2254                 return ERR_PTR(-ENOMEM);
2255
2256         uid = context ? to_mucontext(context)->devx_uid : 0;
2257         MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD);
2258         MLX5_SET(alloc_pd_in, in, uid, uid);
2259         err = mlx5_cmd_exec(to_mdev(ibdev)->mdev, in, sizeof(in),
2260                             out, sizeof(out));
2261         if (err) {
2262                 kfree(pd);
2263                 return ERR_PTR(err);
2264         }
2265
2266         pd->pdn = MLX5_GET(alloc_pd_out, out, pd);
2267         pd->uid = uid;
2268         if (context) {
2269                 resp.pdn = pd->pdn;
2270                 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
2271                         mlx5_cmd_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn, uid);
2272                         kfree(pd);
2273                         return ERR_PTR(-EFAULT);
2274                 }
2275         }
2276
2277         return &pd->ibpd;
2278 }
2279
2280 static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
2281 {
2282         struct mlx5_ib_dev *mdev = to_mdev(pd->device);
2283         struct mlx5_ib_pd *mpd = to_mpd(pd);
2284
2285         mlx5_cmd_dealloc_pd(mdev->mdev, mpd->pdn, mpd->uid);
2286         kfree(mpd);
2287
2288         return 0;
2289 }
2290
2291 enum {
2292         MATCH_CRITERIA_ENABLE_OUTER_BIT,
2293         MATCH_CRITERIA_ENABLE_MISC_BIT,
2294         MATCH_CRITERIA_ENABLE_INNER_BIT,
2295         MATCH_CRITERIA_ENABLE_MISC2_BIT
2296 };
2297
2298 #define HEADER_IS_ZERO(match_criteria, headers)                            \
2299         !(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \
2300                     0, MLX5_FLD_SZ_BYTES(fte_match_param, headers)))       \
2301
2302 static u8 get_match_criteria_enable(u32 *match_criteria)
2303 {
2304         u8 match_criteria_enable;
2305
2306         match_criteria_enable =
2307                 (!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
2308                 MATCH_CRITERIA_ENABLE_OUTER_BIT;
2309         match_criteria_enable |=
2310                 (!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
2311                 MATCH_CRITERIA_ENABLE_MISC_BIT;
2312         match_criteria_enable |=
2313                 (!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
2314                 MATCH_CRITERIA_ENABLE_INNER_BIT;
2315         match_criteria_enable |=
2316                 (!HEADER_IS_ZERO(match_criteria, misc_parameters_2)) <<
2317                 MATCH_CRITERIA_ENABLE_MISC2_BIT;
2318
2319         return match_criteria_enable;
2320 }
2321
2322 static void set_proto(void *outer_c, void *outer_v, u8 mask, u8 val)
2323 {
2324         MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask);
2325         MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val);
2326 }
2327
2328 static void set_flow_label(void *misc_c, void *misc_v, u32 mask, u32 val,
2329                            bool inner)
2330 {
2331         if (inner) {
2332                 MLX5_SET(fte_match_set_misc,
2333                          misc_c, inner_ipv6_flow_label, mask);
2334                 MLX5_SET(fte_match_set_misc,
2335                          misc_v, inner_ipv6_flow_label, val);
2336         } else {
2337                 MLX5_SET(fte_match_set_misc,
2338                          misc_c, outer_ipv6_flow_label, mask);
2339                 MLX5_SET(fte_match_set_misc,
2340                          misc_v, outer_ipv6_flow_label, val);
2341         }
2342 }
2343
2344 static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
2345 {
2346         MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask);
2347         MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val);
2348         MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2);
2349         MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2);
2350 }
2351
2352 static int check_mpls_supp_fields(u32 field_support, const __be32 *set_mask)
2353 {
2354         if (MLX5_GET(fte_match_mpls, set_mask, mpls_label) &&
2355             !(field_support & MLX5_FIELD_SUPPORT_MPLS_LABEL))
2356                 return -EOPNOTSUPP;
2357
2358         if (MLX5_GET(fte_match_mpls, set_mask, mpls_exp) &&
2359             !(field_support & MLX5_FIELD_SUPPORT_MPLS_EXP))
2360                 return -EOPNOTSUPP;
2361
2362         if (MLX5_GET(fte_match_mpls, set_mask, mpls_s_bos) &&
2363             !(field_support & MLX5_FIELD_SUPPORT_MPLS_S_BOS))
2364                 return -EOPNOTSUPP;
2365
2366         if (MLX5_GET(fte_match_mpls, set_mask, mpls_ttl) &&
2367             !(field_support & MLX5_FIELD_SUPPORT_MPLS_TTL))
2368                 return -EOPNOTSUPP;
2369
2370         return 0;
2371 }
2372
2373 #define LAST_ETH_FIELD vlan_tag
2374 #define LAST_IB_FIELD sl
2375 #define LAST_IPV4_FIELD tos
2376 #define LAST_IPV6_FIELD traffic_class
2377 #define LAST_TCP_UDP_FIELD src_port
2378 #define LAST_TUNNEL_FIELD tunnel_id
2379 #define LAST_FLOW_TAG_FIELD tag_id
2380 #define LAST_DROP_FIELD size
2381 #define LAST_COUNTERS_FIELD counters
2382
2383 /* Field is the last supported field */
2384 #define FIELDS_NOT_SUPPORTED(filter, field)\
2385         memchr_inv((void *)&filter.field  +\
2386                    sizeof(filter.field), 0,\
2387                    sizeof(filter) -\
2388                    offsetof(typeof(filter), field) -\
2389                    sizeof(filter.field))
2390
2391 int parse_flow_flow_action(struct mlx5_ib_flow_action *maction,
2392                            bool is_egress,
2393                            struct mlx5_flow_act *action)
2394 {
2395
2396         switch (maction->ib_action.type) {
2397         case IB_FLOW_ACTION_ESP:
2398                 if (action->action & (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT |
2399                                       MLX5_FLOW_CONTEXT_ACTION_DECRYPT))
2400                         return -EINVAL;
2401                 /* Currently only AES_GCM keymat is supported by the driver */
2402                 action->esp_id = (uintptr_t)maction->esp_aes_gcm.ctx;
2403                 action->action |= is_egress ?
2404                         MLX5_FLOW_CONTEXT_ACTION_ENCRYPT :
2405                         MLX5_FLOW_CONTEXT_ACTION_DECRYPT;
2406                 return 0;
2407         case IB_FLOW_ACTION_UNSPECIFIED:
2408                 if (maction->flow_action_raw.sub_type ==
2409                     MLX5_IB_FLOW_ACTION_MODIFY_HEADER) {
2410                         if (action->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
2411                                 return -EINVAL;
2412                         action->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2413                         action->modify_id = maction->flow_action_raw.action_id;
2414                         return 0;
2415                 }
2416                 if (maction->flow_action_raw.sub_type ==
2417                     MLX5_IB_FLOW_ACTION_DECAP) {
2418                         if (action->action & MLX5_FLOW_CONTEXT_ACTION_DECAP)
2419                                 return -EINVAL;
2420                         action->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
2421                         return 0;
2422                 }
2423                 if (maction->flow_action_raw.sub_type ==
2424                     MLX5_IB_FLOW_ACTION_PACKET_REFORMAT) {
2425                         if (action->action &
2426                             MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT)
2427                                 return -EINVAL;
2428                         action->action |=
2429                                 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
2430                         action->reformat_id =
2431                                 maction->flow_action_raw.action_id;
2432                         return 0;
2433                 }
2434                 /* fall through */
2435         default:
2436                 return -EOPNOTSUPP;
2437         }
2438 }
2439
2440 static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c,
2441                            u32 *match_v, const union ib_flow_spec *ib_spec,
2442                            const struct ib_flow_attr *flow_attr,
2443                            struct mlx5_flow_act *action, u32 prev_type)
2444 {
2445         void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
2446                                            misc_parameters);
2447         void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
2448                                            misc_parameters);
2449         void *misc_params2_c = MLX5_ADDR_OF(fte_match_param, match_c,
2450                                             misc_parameters_2);
2451         void *misc_params2_v = MLX5_ADDR_OF(fte_match_param, match_v,
2452                                             misc_parameters_2);
2453         void *headers_c;
2454         void *headers_v;
2455         int match_ipv;
2456         int ret;
2457
2458         if (ib_spec->type & IB_FLOW_SPEC_INNER) {
2459                 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
2460                                          inner_headers);
2461                 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
2462                                          inner_headers);
2463                 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2464                                         ft_field_support.inner_ip_version);
2465         } else {
2466                 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
2467                                          outer_headers);
2468                 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
2469                                          outer_headers);
2470                 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2471                                         ft_field_support.outer_ip_version);
2472         }
2473
2474         switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2475         case IB_FLOW_SPEC_ETH:
2476                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
2477                         return -EOPNOTSUPP;
2478
2479                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2480                                              dmac_47_16),
2481                                 ib_spec->eth.mask.dst_mac);
2482                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2483                                              dmac_47_16),
2484                                 ib_spec->eth.val.dst_mac);
2485
2486                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2487                                              smac_47_16),
2488                                 ib_spec->eth.mask.src_mac);
2489                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2490                                              smac_47_16),
2491                                 ib_spec->eth.val.src_mac);
2492
2493                 if (ib_spec->eth.mask.vlan_tag) {
2494                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2495                                  cvlan_tag, 1);
2496                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2497                                  cvlan_tag, 1);
2498
2499                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2500                                  first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
2501                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2502                                  first_vid, ntohs(ib_spec->eth.val.vlan_tag));
2503
2504                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2505                                  first_cfi,
2506                                  ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
2507                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2508                                  first_cfi,
2509                                  ntohs(ib_spec->eth.val.vlan_tag) >> 12);
2510
2511                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2512                                  first_prio,
2513                                  ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
2514                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2515                                  first_prio,
2516                                  ntohs(ib_spec->eth.val.vlan_tag) >> 13);
2517                 }
2518                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2519                          ethertype, ntohs(ib_spec->eth.mask.ether_type));
2520                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2521                          ethertype, ntohs(ib_spec->eth.val.ether_type));
2522                 break;
2523         case IB_FLOW_SPEC_IPV4:
2524                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
2525                         return -EOPNOTSUPP;
2526
2527                 if (match_ipv) {
2528                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2529                                  ip_version, 0xf);
2530                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2531                                  ip_version, MLX5_FS_IPV4_VERSION);
2532                 } else {
2533                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2534                                  ethertype, 0xffff);
2535                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2536                                  ethertype, ETH_P_IP);
2537                 }
2538
2539                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2540                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
2541                        &ib_spec->ipv4.mask.src_ip,
2542                        sizeof(ib_spec->ipv4.mask.src_ip));
2543                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2544                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
2545                        &ib_spec->ipv4.val.src_ip,
2546                        sizeof(ib_spec->ipv4.val.src_ip));
2547                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2548                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2549                        &ib_spec->ipv4.mask.dst_ip,
2550                        sizeof(ib_spec->ipv4.mask.dst_ip));
2551                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2552                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2553                        &ib_spec->ipv4.val.dst_ip,
2554                        sizeof(ib_spec->ipv4.val.dst_ip));
2555
2556                 set_tos(headers_c, headers_v,
2557                         ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos);
2558
2559                 set_proto(headers_c, headers_v,
2560                           ib_spec->ipv4.mask.proto, ib_spec->ipv4.val.proto);
2561                 break;
2562         case IB_FLOW_SPEC_IPV6:
2563                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD))
2564                         return -EOPNOTSUPP;
2565
2566                 if (match_ipv) {
2567                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2568                                  ip_version, 0xf);
2569                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2570                                  ip_version, MLX5_FS_IPV6_VERSION);
2571                 } else {
2572                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2573                                  ethertype, 0xffff);
2574                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2575                                  ethertype, ETH_P_IPV6);
2576                 }
2577
2578                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2579                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
2580                        &ib_spec->ipv6.mask.src_ip,
2581                        sizeof(ib_spec->ipv6.mask.src_ip));
2582                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2583                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
2584                        &ib_spec->ipv6.val.src_ip,
2585                        sizeof(ib_spec->ipv6.val.src_ip));
2586                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2587                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2588                        &ib_spec->ipv6.mask.dst_ip,
2589                        sizeof(ib_spec->ipv6.mask.dst_ip));
2590                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2591                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2592                        &ib_spec->ipv6.val.dst_ip,
2593                        sizeof(ib_spec->ipv6.val.dst_ip));
2594
2595                 set_tos(headers_c, headers_v,
2596                         ib_spec->ipv6.mask.traffic_class,
2597                         ib_spec->ipv6.val.traffic_class);
2598
2599                 set_proto(headers_c, headers_v,
2600                           ib_spec->ipv6.mask.next_hdr,
2601                           ib_spec->ipv6.val.next_hdr);
2602
2603                 set_flow_label(misc_params_c, misc_params_v,
2604                                ntohl(ib_spec->ipv6.mask.flow_label),
2605                                ntohl(ib_spec->ipv6.val.flow_label),
2606                                ib_spec->type & IB_FLOW_SPEC_INNER);
2607                 break;
2608         case IB_FLOW_SPEC_ESP:
2609                 if (ib_spec->esp.mask.seq)
2610                         return -EOPNOTSUPP;
2611
2612                 MLX5_SET(fte_match_set_misc, misc_params_c, outer_esp_spi,
2613                          ntohl(ib_spec->esp.mask.spi));
2614                 MLX5_SET(fte_match_set_misc, misc_params_v, outer_esp_spi,
2615                          ntohl(ib_spec->esp.val.spi));
2616                 break;
2617         case IB_FLOW_SPEC_TCP:
2618                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
2619                                          LAST_TCP_UDP_FIELD))
2620                         return -EOPNOTSUPP;
2621
2622                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2623                          0xff);
2624                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2625                          IPPROTO_TCP);
2626
2627                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport,
2628                          ntohs(ib_spec->tcp_udp.mask.src_port));
2629                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport,
2630                          ntohs(ib_spec->tcp_udp.val.src_port));
2631
2632                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport,
2633                          ntohs(ib_spec->tcp_udp.mask.dst_port));
2634                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
2635                          ntohs(ib_spec->tcp_udp.val.dst_port));
2636                 break;
2637         case IB_FLOW_SPEC_UDP:
2638                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
2639                                          LAST_TCP_UDP_FIELD))
2640                         return -EOPNOTSUPP;
2641
2642                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2643                          0xff);
2644                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2645                          IPPROTO_UDP);
2646
2647                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport,
2648                          ntohs(ib_spec->tcp_udp.mask.src_port));
2649                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport,
2650                          ntohs(ib_spec->tcp_udp.val.src_port));
2651
2652                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport,
2653                          ntohs(ib_spec->tcp_udp.mask.dst_port));
2654                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
2655                          ntohs(ib_spec->tcp_udp.val.dst_port));
2656                 break;
2657         case IB_FLOW_SPEC_GRE:
2658                 if (ib_spec->gre.mask.c_ks_res0_ver)
2659                         return -EOPNOTSUPP;
2660
2661                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2662                          0xff);
2663                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2664                          IPPROTO_GRE);
2665
2666                 MLX5_SET(fte_match_set_misc, misc_params_c, gre_protocol,
2667                          ntohs(ib_spec->gre.mask.protocol));
2668                 MLX5_SET(fte_match_set_misc, misc_params_v, gre_protocol,
2669                          ntohs(ib_spec->gre.val.protocol));
2670
2671                 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_c,
2672                                     gre_key_h),
2673                        &ib_spec->gre.mask.key,
2674                        sizeof(ib_spec->gre.mask.key));
2675                 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_v,
2676                                     gre_key_h),
2677                        &ib_spec->gre.val.key,
2678                        sizeof(ib_spec->gre.val.key));
2679                 break;
2680         case IB_FLOW_SPEC_MPLS:
2681                 switch (prev_type) {
2682                 case IB_FLOW_SPEC_UDP:
2683                         if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2684                                                    ft_field_support.outer_first_mpls_over_udp),
2685                                                    &ib_spec->mpls.mask.tag))
2686                                 return -EOPNOTSUPP;
2687
2688                         memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
2689                                             outer_first_mpls_over_udp),
2690                                &ib_spec->mpls.val.tag,
2691                                sizeof(ib_spec->mpls.val.tag));
2692                         memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
2693                                             outer_first_mpls_over_udp),
2694                                &ib_spec->mpls.mask.tag,
2695                                sizeof(ib_spec->mpls.mask.tag));
2696                         break;
2697                 case IB_FLOW_SPEC_GRE:
2698                         if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2699                                                    ft_field_support.outer_first_mpls_over_gre),
2700                                                    &ib_spec->mpls.mask.tag))
2701                                 return -EOPNOTSUPP;
2702
2703                         memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
2704                                             outer_first_mpls_over_gre),
2705                                &ib_spec->mpls.val.tag,
2706                                sizeof(ib_spec->mpls.val.tag));
2707                         memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
2708                                             outer_first_mpls_over_gre),
2709                                &ib_spec->mpls.mask.tag,
2710                                sizeof(ib_spec->mpls.mask.tag));
2711                         break;
2712                 default:
2713                         if (ib_spec->type & IB_FLOW_SPEC_INNER) {
2714                                 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2715                                                            ft_field_support.inner_first_mpls),
2716                                                            &ib_spec->mpls.mask.tag))
2717                                         return -EOPNOTSUPP;
2718
2719                                 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
2720                                                     inner_first_mpls),
2721                                        &ib_spec->mpls.val.tag,
2722                                        sizeof(ib_spec->mpls.val.tag));
2723                                 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
2724                                                     inner_first_mpls),
2725                                        &ib_spec->mpls.mask.tag,
2726                                        sizeof(ib_spec->mpls.mask.tag));
2727                         } else {
2728                                 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2729                                                            ft_field_support.outer_first_mpls),
2730                                                            &ib_spec->mpls.mask.tag))
2731                                         return -EOPNOTSUPP;
2732
2733                                 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
2734                                                     outer_first_mpls),
2735                                        &ib_spec->mpls.val.tag,
2736                                        sizeof(ib_spec->mpls.val.tag));
2737                                 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
2738                                                     outer_first_mpls),
2739                                        &ib_spec->mpls.mask.tag,
2740                                        sizeof(ib_spec->mpls.mask.tag));
2741                         }
2742                 }
2743                 break;
2744         case IB_FLOW_SPEC_VXLAN_TUNNEL:
2745                 if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask,
2746                                          LAST_TUNNEL_FIELD))
2747                         return -EOPNOTSUPP;
2748
2749                 MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni,
2750                          ntohl(ib_spec->tunnel.mask.tunnel_id));
2751                 MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni,
2752                          ntohl(ib_spec->tunnel.val.tunnel_id));
2753                 break;
2754         case IB_FLOW_SPEC_ACTION_TAG:
2755                 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag,
2756                                          LAST_FLOW_TAG_FIELD))
2757                         return -EOPNOTSUPP;
2758                 if (ib_spec->flow_tag.tag_id >= BIT(24))
2759                         return -EINVAL;
2760
2761                 action->flow_tag = ib_spec->flow_tag.tag_id;
2762                 action->flags |= FLOW_ACT_HAS_TAG;
2763                 break;
2764         case IB_FLOW_SPEC_ACTION_DROP:
2765                 if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
2766                                          LAST_DROP_FIELD))
2767                         return -EOPNOTSUPP;
2768                 action->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
2769                 break;
2770         case IB_FLOW_SPEC_ACTION_HANDLE:
2771                 ret = parse_flow_flow_action(to_mflow_act(ib_spec->action.act),
2772                         flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS, action);
2773                 if (ret)
2774                         return ret;
2775                 break;
2776         case IB_FLOW_SPEC_ACTION_COUNT:
2777                 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_count,
2778                                          LAST_COUNTERS_FIELD))
2779                         return -EOPNOTSUPP;
2780
2781                 /* for now support only one counters spec per flow */
2782                 if (action->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
2783                         return -EINVAL;
2784
2785                 action->counters = ib_spec->flow_count.counters;
2786                 action->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
2787                 break;
2788         default:
2789                 return -EINVAL;
2790         }
2791
2792         return 0;
2793 }
2794
2795 /* If a flow could catch both multicast and unicast packets,
2796  * it won't fall into the multicast flow steering table and this rule
2797  * could steal other multicast packets.
2798  */
2799 static bool flow_is_multicast_only(const struct ib_flow_attr *ib_attr)
2800 {
2801         union ib_flow_spec *flow_spec;
2802
2803         if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
2804             ib_attr->num_of_specs < 1)
2805                 return false;
2806
2807         flow_spec = (union ib_flow_spec *)(ib_attr + 1);
2808         if (flow_spec->type == IB_FLOW_SPEC_IPV4) {
2809                 struct ib_flow_spec_ipv4 *ipv4_spec;
2810
2811                 ipv4_spec = (struct ib_flow_spec_ipv4 *)flow_spec;
2812                 if (ipv4_is_multicast(ipv4_spec->val.dst_ip))
2813                         return true;
2814
2815                 return false;
2816         }
2817
2818         if (flow_spec->type == IB_FLOW_SPEC_ETH) {
2819                 struct ib_flow_spec_eth *eth_spec;
2820
2821                 eth_spec = (struct ib_flow_spec_eth *)flow_spec;
2822                 return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
2823                        is_multicast_ether_addr(eth_spec->val.dst_mac);
2824         }
2825
2826         return false;
2827 }
2828
2829 enum valid_spec {
2830         VALID_SPEC_INVALID,
2831         VALID_SPEC_VALID,
2832         VALID_SPEC_NA,
2833 };
2834
2835 static enum valid_spec
2836 is_valid_esp_aes_gcm(struct mlx5_core_dev *mdev,
2837                      const struct mlx5_flow_spec *spec,
2838                      const struct mlx5_flow_act *flow_act,
2839                      bool egress)
2840 {
2841         const u32 *match_c = spec->match_criteria;
2842         bool is_crypto =
2843                 (flow_act->action & (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT |
2844                                      MLX5_FLOW_CONTEXT_ACTION_DECRYPT));
2845         bool is_ipsec = mlx5_fs_is_ipsec_flow(match_c);
2846         bool is_drop = flow_act->action & MLX5_FLOW_CONTEXT_ACTION_DROP;
2847
2848         /*
2849          * Currently only crypto is supported in egress, when regular egress
2850          * rules would be supported, always return VALID_SPEC_NA.
2851          */
2852         if (!is_crypto)
2853                 return VALID_SPEC_NA;
2854
2855         return is_crypto && is_ipsec &&
2856                 (!egress || (!is_drop && !(flow_act->flags & FLOW_ACT_HAS_TAG))) ?
2857                 VALID_SPEC_VALID : VALID_SPEC_INVALID;
2858 }
2859
2860 static bool is_valid_spec(struct mlx5_core_dev *mdev,
2861                           const struct mlx5_flow_spec *spec,
2862                           const struct mlx5_flow_act *flow_act,
2863                           bool egress)
2864 {
2865         /* We curretly only support ipsec egress flow */
2866         return is_valid_esp_aes_gcm(mdev, spec, flow_act, egress) != VALID_SPEC_INVALID;
2867 }
2868
2869 static bool is_valid_ethertype(struct mlx5_core_dev *mdev,
2870                                const struct ib_flow_attr *flow_attr,
2871                                bool check_inner)
2872 {
2873         union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
2874         int match_ipv = check_inner ?
2875                         MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2876                                         ft_field_support.inner_ip_version) :
2877                         MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2878                                         ft_field_support.outer_ip_version);
2879         int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0;
2880         bool ipv4_spec_valid, ipv6_spec_valid;
2881         unsigned int ip_spec_type = 0;
2882         bool has_ethertype = false;
2883         unsigned int spec_index;
2884         bool mask_valid = true;
2885         u16 eth_type = 0;
2886         bool type_valid;
2887
2888         /* Validate that ethertype is correct */
2889         for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
2890                 if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) &&
2891                     ib_spec->eth.mask.ether_type) {
2892                         mask_valid = (ib_spec->eth.mask.ether_type ==
2893                                       htons(0xffff));
2894                         has_ethertype = true;
2895                         eth_type = ntohs(ib_spec->eth.val.ether_type);
2896                 } else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) ||
2897                            (ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) {
2898                         ip_spec_type = ib_spec->type;
2899                 }
2900                 ib_spec = (void *)ib_spec + ib_spec->size;
2901         }
2902
2903         type_valid = (!has_ethertype) || (!ip_spec_type);
2904         if (!type_valid && mask_valid) {
2905                 ipv4_spec_valid = (eth_type == ETH_P_IP) &&
2906                         (ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit));
2907                 ipv6_spec_valid = (eth_type == ETH_P_IPV6) &&
2908                         (ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit));
2909
2910                 type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) ||
2911                              (((eth_type == ETH_P_MPLS_UC) ||
2912                                (eth_type == ETH_P_MPLS_MC)) && match_ipv);
2913         }
2914
2915         return type_valid;
2916 }
2917
2918 static bool is_valid_attr(struct mlx5_core_dev *mdev,
2919                           const struct ib_flow_attr *flow_attr)
2920 {
2921         return is_valid_ethertype(mdev, flow_attr, false) &&
2922                is_valid_ethertype(mdev, flow_attr, true);
2923 }
2924
2925 static void put_flow_table(struct mlx5_ib_dev *dev,
2926                            struct mlx5_ib_flow_prio *prio, bool ft_added)
2927 {
2928         prio->refcount -= !!ft_added;
2929         if (!prio->refcount) {
2930                 mlx5_destroy_flow_table(prio->flow_table);
2931                 prio->flow_table = NULL;
2932         }
2933 }
2934
2935 static void counters_clear_description(struct ib_counters *counters)
2936 {
2937         struct mlx5_ib_mcounters *mcounters = to_mcounters(counters);
2938
2939         mutex_lock(&mcounters->mcntrs_mutex);
2940         kfree(mcounters->counters_data);
2941         mcounters->counters_data = NULL;
2942         mcounters->cntrs_max_index = 0;
2943         mutex_unlock(&mcounters->mcntrs_mutex);
2944 }
2945
2946 static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
2947 {
2948         struct mlx5_ib_flow_handler *handler = container_of(flow_id,
2949                                                           struct mlx5_ib_flow_handler,
2950                                                           ibflow);
2951         struct mlx5_ib_flow_handler *iter, *tmp;
2952         struct mlx5_ib_dev *dev = handler->dev;
2953
2954         mutex_lock(&dev->flow_db->lock);
2955
2956         list_for_each_entry_safe(iter, tmp, &handler->list, list) {
2957                 mlx5_del_flow_rules(iter->rule);
2958                 put_flow_table(dev, iter->prio, true);
2959                 list_del(&iter->list);
2960                 kfree(iter);
2961         }
2962
2963         mlx5_del_flow_rules(handler->rule);
2964         put_flow_table(dev, handler->prio, true);
2965         if (handler->ibcounters &&
2966             atomic_read(&handler->ibcounters->usecnt) == 1)
2967                 counters_clear_description(handler->ibcounters);
2968
2969         mutex_unlock(&dev->flow_db->lock);
2970         if (handler->flow_matcher)
2971                 atomic_dec(&handler->flow_matcher->usecnt);
2972         kfree(handler);
2973
2974         return 0;
2975 }
2976
2977 static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
2978 {
2979         priority *= 2;
2980         if (!dont_trap)
2981                 priority++;
2982         return priority;
2983 }
2984
2985 enum flow_table_type {
2986         MLX5_IB_FT_RX,
2987         MLX5_IB_FT_TX
2988 };
2989
2990 #define MLX5_FS_MAX_TYPES        6
2991 #define MLX5_FS_MAX_ENTRIES      BIT(16)
2992
2993 static struct mlx5_ib_flow_prio *_get_prio(struct mlx5_flow_namespace *ns,
2994                                            struct mlx5_ib_flow_prio *prio,
2995                                            int priority,
2996                                            int num_entries, int num_groups,
2997                                            u32 flags)
2998 {
2999         struct mlx5_flow_table *ft;
3000
3001         ft = mlx5_create_auto_grouped_flow_table(ns, priority,
3002                                                  num_entries,
3003                                                  num_groups,
3004                                                  0, flags);
3005         if (IS_ERR(ft))
3006                 return ERR_CAST(ft);
3007
3008         prio->flow_table = ft;
3009         prio->refcount = 0;
3010         return prio;
3011 }
3012
3013 static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
3014                                                 struct ib_flow_attr *flow_attr,
3015                                                 enum flow_table_type ft_type)
3016 {
3017         bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
3018         struct mlx5_flow_namespace *ns = NULL;
3019         struct mlx5_ib_flow_prio *prio;
3020         struct mlx5_flow_table *ft;
3021         int max_table_size;
3022         int num_entries;
3023         int num_groups;
3024         u32 flags = 0;
3025         int priority;
3026
3027         max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
3028                                                        log_max_ft_size));
3029         if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
3030                 enum mlx5_flow_namespace_type fn_type;
3031
3032                 if (flow_is_multicast_only(flow_attr) &&
3033                     !dont_trap)
3034                         priority = MLX5_IB_FLOW_MCAST_PRIO;
3035                 else
3036                         priority = ib_prio_to_core_prio(flow_attr->priority,
3037                                                         dont_trap);
3038                 if (ft_type == MLX5_IB_FT_RX) {
3039                         fn_type = MLX5_FLOW_NAMESPACE_BYPASS;
3040                         prio = &dev->flow_db->prios[priority];
3041                         if (!dev->rep &&
3042                             MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap))
3043                                 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
3044                         if (!dev->rep &&
3045                             MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
3046                                         reformat_l3_tunnel_to_l2))
3047                                 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
3048                 } else {
3049                         max_table_size =
3050                                 BIT(MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev,
3051                                                               log_max_ft_size));
3052                         fn_type = MLX5_FLOW_NAMESPACE_EGRESS;
3053                         prio = &dev->flow_db->egress_prios[priority];
3054                         if (!dev->rep &&
3055                             MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat))
3056                                 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
3057                 }
3058                 ns = mlx5_get_flow_namespace(dev->mdev, fn_type);
3059                 num_entries = MLX5_FS_MAX_ENTRIES;
3060                 num_groups = MLX5_FS_MAX_TYPES;
3061         } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
3062                    flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
3063                 ns = mlx5_get_flow_namespace(dev->mdev,
3064                                              MLX5_FLOW_NAMESPACE_LEFTOVERS);
3065                 build_leftovers_ft_param(&priority,
3066                                          &num_entries,
3067                                          &num_groups);
3068                 prio = &dev->flow_db->prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
3069         } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
3070                 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
3071                                         allow_sniffer_and_nic_rx_shared_tir))
3072                         return ERR_PTR(-ENOTSUPP);
3073
3074                 ns = mlx5_get_flow_namespace(dev->mdev, ft_type == MLX5_IB_FT_RX ?
3075                                              MLX5_FLOW_NAMESPACE_SNIFFER_RX :
3076                                              MLX5_FLOW_NAMESPACE_SNIFFER_TX);
3077
3078                 prio = &dev->flow_db->sniffer[ft_type];
3079                 priority = 0;
3080                 num_entries = 1;
3081                 num_groups = 1;
3082         }
3083
3084         if (!ns)
3085                 return ERR_PTR(-ENOTSUPP);
3086
3087         if (num_entries > max_table_size)
3088                 return ERR_PTR(-ENOMEM);
3089
3090         ft = prio->flow_table;
3091         if (!ft)
3092                 return _get_prio(ns, prio, priority, num_entries, num_groups,
3093                                  flags);
3094
3095         return prio;
3096 }
3097
3098 static void set_underlay_qp(struct mlx5_ib_dev *dev,
3099                             struct mlx5_flow_spec *spec,
3100                             u32 underlay_qpn)
3101 {
3102         void *misc_params_c = MLX5_ADDR_OF(fte_match_param,
3103                                            spec->match_criteria,
3104                                            misc_parameters);
3105         void *misc_params_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
3106                                            misc_parameters);
3107
3108         if (underlay_qpn &&
3109             MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
3110                                       ft_field_support.bth_dst_qp)) {
3111                 MLX5_SET(fte_match_set_misc,
3112                          misc_params_v, bth_dst_qp, underlay_qpn);
3113                 MLX5_SET(fte_match_set_misc,
3114                          misc_params_c, bth_dst_qp, 0xffffff);
3115         }
3116 }
3117
3118 static int read_flow_counters(struct ib_device *ibdev,
3119                               struct mlx5_read_counters_attr *read_attr)
3120 {
3121         struct mlx5_fc *fc = read_attr->hw_cntrs_hndl;
3122         struct mlx5_ib_dev *dev = to_mdev(ibdev);
3123
3124         return mlx5_fc_query(dev->mdev, fc,
3125                              &read_attr->out[IB_COUNTER_PACKETS],
3126                              &read_attr->out[IB_COUNTER_BYTES]);
3127 }
3128
3129 /* flow counters currently expose two counters packets and bytes */
3130 #define FLOW_COUNTERS_NUM 2
3131 static int counters_set_description(struct ib_counters *counters,
3132                                     enum mlx5_ib_counters_type counters_type,
3133                                     struct mlx5_ib_flow_counters_desc *desc_data,
3134                                     u32 ncounters)
3135 {
3136         struct mlx5_ib_mcounters *mcounters = to_mcounters(counters);
3137         u32 cntrs_max_index = 0;
3138         int i;
3139
3140         if (counters_type != MLX5_IB_COUNTERS_FLOW)
3141                 return -EINVAL;
3142
3143         /* init the fields for the object */
3144         mcounters->type = counters_type;
3145         mcounters->read_counters = read_flow_counters;
3146         mcounters->counters_num = FLOW_COUNTERS_NUM;
3147         mcounters->ncounters = ncounters;
3148         /* each counter entry have both description and index pair */
3149         for (i = 0; i < ncounters; i++) {
3150                 if (desc_data[i].description > IB_COUNTER_BYTES)
3151                         return -EINVAL;
3152
3153                 if (cntrs_max_index <= desc_data[i].index)
3154                         cntrs_max_index = desc_data[i].index + 1;
3155         }
3156
3157         mutex_lock(&mcounters->mcntrs_mutex);
3158         mcounters->counters_data = desc_data;
3159         mcounters->cntrs_max_index = cntrs_max_index;
3160         mutex_unlock(&mcounters->mcntrs_mutex);
3161
3162         return 0;
3163 }
3164
3165 #define MAX_COUNTERS_NUM (USHRT_MAX / (sizeof(u32) * 2))
3166 static int flow_counters_set_data(struct ib_counters *ibcounters,
3167                                   struct mlx5_ib_create_flow *ucmd)
3168 {
3169         struct mlx5_ib_mcounters *mcounters = to_mcounters(ibcounters);
3170         struct mlx5_ib_flow_counters_data *cntrs_data = NULL;
3171         struct mlx5_ib_flow_counters_desc *desc_data = NULL;
3172         bool hw_hndl = false;
3173         int ret = 0;
3174
3175         if (ucmd && ucmd->ncounters_data != 0) {
3176                 cntrs_data = ucmd->data;
3177                 if (cntrs_data->ncounters > MAX_COUNTERS_NUM)
3178                         return -EINVAL;
3179
3180                 desc_data = kcalloc(cntrs_data->ncounters,
3181                                     sizeof(*desc_data),
3182                                     GFP_KERNEL);
3183                 if (!desc_data)
3184                         return  -ENOMEM;
3185
3186                 if (copy_from_user(desc_data,
3187                                    u64_to_user_ptr(cntrs_data->counters_data),
3188                                    sizeof(*desc_data) * cntrs_data->ncounters)) {
3189                         ret = -EFAULT;
3190                         goto free;
3191                 }
3192         }
3193
3194         if (!mcounters->hw_cntrs_hndl) {
3195                 mcounters->hw_cntrs_hndl = mlx5_fc_create(
3196                         to_mdev(ibcounters->device)->mdev, false);
3197                 if (IS_ERR(mcounters->hw_cntrs_hndl)) {
3198                         ret = PTR_ERR(mcounters->hw_cntrs_hndl);
3199                         goto free;
3200                 }
3201                 hw_hndl = true;
3202         }
3203
3204         if (desc_data) {
3205                 /* counters already bound to at least one flow */
3206                 if (mcounters->cntrs_max_index) {
3207                         ret = -EINVAL;
3208                         goto free_hndl;
3209                 }
3210
3211                 ret = counters_set_description(ibcounters,
3212                                                MLX5_IB_COUNTERS_FLOW,
3213                                                desc_data,
3214                                                cntrs_data->ncounters);
3215                 if (ret)
3216                         goto free_hndl;
3217
3218         } else if (!mcounters->cntrs_max_index) {
3219                 /* counters not bound yet, must have udata passed */
3220                 ret = -EINVAL;
3221                 goto free_hndl;
3222         }
3223
3224         return 0;
3225
3226 free_hndl:
3227         if (hw_hndl) {
3228                 mlx5_fc_destroy(to_mdev(ibcounters->device)->mdev,
3229                                 mcounters->hw_cntrs_hndl);
3230                 mcounters->hw_cntrs_hndl = NULL;
3231         }
3232 free:
3233         kfree(desc_data);
3234         return ret;
3235 }
3236
3237 static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
3238                                                       struct mlx5_ib_flow_prio *ft_prio,
3239                                                       const struct ib_flow_attr *flow_attr,
3240                                                       struct mlx5_flow_destination *dst,
3241                                                       u32 underlay_qpn,
3242                                                       struct mlx5_ib_create_flow *ucmd)
3243 {
3244         struct mlx5_flow_table  *ft = ft_prio->flow_table;
3245         struct mlx5_ib_flow_handler *handler;
3246         struct mlx5_flow_act flow_act = {.flow_tag = MLX5_FS_DEFAULT_FLOW_TAG};
3247         struct mlx5_flow_spec *spec;
3248         struct mlx5_flow_destination dest_arr[2] = {};
3249         struct mlx5_flow_destination *rule_dst = dest_arr;
3250         const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
3251         unsigned int spec_index;
3252         u32 prev_type = 0;
3253         int err = 0;
3254         int dest_num = 0;
3255         bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
3256
3257         if (!is_valid_attr(dev->mdev, flow_attr))
3258                 return ERR_PTR(-EINVAL);
3259
3260         if (dev->rep && is_egress)
3261                 return ERR_PTR(-EINVAL);
3262
3263         spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
3264         handler = kzalloc(sizeof(*handler), GFP_KERNEL);
3265         if (!handler || !spec) {
3266                 err = -ENOMEM;
3267                 goto free;
3268         }
3269
3270         INIT_LIST_HEAD(&handler->list);
3271         if (dst) {
3272                 memcpy(&dest_arr[0], dst, sizeof(*dst));
3273                 dest_num++;
3274         }
3275
3276         for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
3277                 err = parse_flow_attr(dev->mdev, spec->match_criteria,
3278                                       spec->match_value,
3279                                       ib_flow, flow_attr, &flow_act,
3280                                       prev_type);
3281                 if (err < 0)
3282                         goto free;
3283
3284                 prev_type = ((union ib_flow_spec *)ib_flow)->type;
3285                 ib_flow += ((union ib_flow_spec *)ib_flow)->size;
3286         }
3287
3288         if (!flow_is_multicast_only(flow_attr))
3289                 set_underlay_qp(dev, spec, underlay_qpn);
3290
3291         if (dev->rep) {
3292                 void *misc;
3293
3294                 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
3295                                     misc_parameters);
3296                 MLX5_SET(fte_match_set_misc, misc, source_port,
3297                          dev->rep->vport);
3298                 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
3299                                     misc_parameters);
3300                 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
3301         }
3302
3303         spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
3304
3305         if (is_egress &&
3306             !is_valid_spec(dev->mdev, spec, &flow_act, is_egress)) {
3307                 err = -EINVAL;
3308                 goto free;
3309         }
3310
3311         if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
3312                 struct mlx5_ib_mcounters *mcounters;
3313
3314                 err = flow_counters_set_data(flow_act.counters, ucmd);
3315                 if (err)
3316                         goto free;
3317
3318                 mcounters = to_mcounters(flow_act.counters);
3319                 handler->ibcounters = flow_act.counters;
3320                 dest_arr[dest_num].type =
3321                         MLX5_FLOW_DESTINATION_TYPE_COUNTER;
3322                 dest_arr[dest_num].counter_id =
3323                         mlx5_fc_id(mcounters->hw_cntrs_hndl);
3324                 dest_num++;
3325         }
3326
3327         if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP) {
3328                 if (!(flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT)) {
3329                         rule_dst = NULL;
3330                         dest_num = 0;
3331                 }
3332         } else {
3333                 if (is_egress)
3334                         flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
3335                 else
3336                         flow_act.action |=
3337                                 dest_num ?  MLX5_FLOW_CONTEXT_ACTION_FWD_DEST :
3338                                         MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
3339         }
3340
3341         if ((flow_act.flags & FLOW_ACT_HAS_TAG)  &&
3342             (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
3343              flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
3344                 mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n",
3345                              flow_act.flow_tag, flow_attr->type);
3346                 err = -EINVAL;
3347                 goto free;
3348         }
3349         handler->rule = mlx5_add_flow_rules(ft, spec,
3350                                             &flow_act,
3351                                             rule_dst, dest_num);
3352
3353         if (IS_ERR(handler->rule)) {
3354                 err = PTR_ERR(handler->rule);
3355                 goto free;
3356         }
3357
3358         ft_prio->refcount++;
3359         handler->prio = ft_prio;
3360         handler->dev = dev;
3361
3362         ft_prio->flow_table = ft;
3363 free:
3364         if (err && handler) {
3365                 if (handler->ibcounters &&
3366                     atomic_read(&handler->ibcounters->usecnt) == 1)
3367                         counters_clear_description(handler->ibcounters);
3368                 kfree(handler);
3369         }
3370         kvfree(spec);
3371         return err ? ERR_PTR(err) : handler;
3372 }
3373
3374 static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
3375                                                      struct mlx5_ib_flow_prio *ft_prio,
3376                                                      const struct ib_flow_attr *flow_attr,
3377                                                      struct mlx5_flow_destination *dst)
3378 {
3379         return _create_flow_rule(dev, ft_prio, flow_attr, dst, 0, NULL);
3380 }
3381
3382 static struct mlx5_ib_flow_handler *create_dont_trap_rule(struct mlx5_ib_dev *dev,
3383                                                           struct mlx5_ib_flow_prio *ft_prio,
3384                                                           struct ib_flow_attr *flow_attr,
3385                                                           struct mlx5_flow_destination *dst)
3386 {
3387         struct mlx5_ib_flow_handler *handler_dst = NULL;
3388         struct mlx5_ib_flow_handler *handler = NULL;
3389
3390         handler = create_flow_rule(dev, ft_prio, flow_attr, NULL);
3391         if (!IS_ERR(handler)) {
3392                 handler_dst = create_flow_rule(dev, ft_prio,
3393                                                flow_attr, dst);
3394                 if (IS_ERR(handler_dst)) {
3395                         mlx5_del_flow_rules(handler->rule);
3396                         ft_prio->refcount--;
3397                         kfree(handler);
3398                         handler = handler_dst;
3399                 } else {
3400                         list_add(&handler_dst->list, &handler->list);
3401                 }
3402         }
3403
3404         return handler;
3405 }
3406 enum {
3407         LEFTOVERS_MC,
3408         LEFTOVERS_UC,
3409 };
3410
3411 static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
3412                                                           struct mlx5_ib_flow_prio *ft_prio,
3413                                                           struct ib_flow_attr *flow_attr,
3414                                                           struct mlx5_flow_destination *dst)
3415 {
3416         struct mlx5_ib_flow_handler *handler_ucast = NULL;
3417         struct mlx5_ib_flow_handler *handler = NULL;
3418
3419         static struct {
3420                 struct ib_flow_attr     flow_attr;
3421                 struct ib_flow_spec_eth eth_flow;
3422         } leftovers_specs[] = {
3423                 [LEFTOVERS_MC] = {
3424                         .flow_attr = {
3425                                 .num_of_specs = 1,
3426                                 .size = sizeof(leftovers_specs[0])
3427                         },
3428                         .eth_flow = {
3429                                 .type = IB_FLOW_SPEC_ETH,
3430                                 .size = sizeof(struct ib_flow_spec_eth),
3431                                 .mask = {.dst_mac = {0x1} },
3432                                 .val =  {.dst_mac = {0x1} }
3433                         }
3434                 },
3435                 [LEFTOVERS_UC] = {
3436                         .flow_attr = {
3437                                 .num_of_specs = 1,
3438                                 .size = sizeof(leftovers_specs[0])
3439                         },
3440                         .eth_flow = {
3441                                 .type = IB_FLOW_SPEC_ETH,
3442                                 .size = sizeof(struct ib_flow_spec_eth),
3443                                 .mask = {.dst_mac = {0x1} },
3444                                 .val = {.dst_mac = {} }
3445                         }
3446                 }
3447         };
3448
3449         handler = create_flow_rule(dev, ft_prio,
3450                                    &leftovers_specs[LEFTOVERS_MC].flow_attr,
3451                                    dst);
3452         if (!IS_ERR(handler) &&
3453             flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
3454                 handler_ucast = create_flow_rule(dev, ft_prio,
3455                                                  &leftovers_specs[LEFTOVERS_UC].flow_attr,
3456                                                  dst);
3457                 if (IS_ERR(handler_ucast)) {
3458                         mlx5_del_flow_rules(handler->rule);
3459                         ft_prio->refcount--;
3460                         kfree(handler);
3461                         handler = handler_ucast;
3462                 } else {
3463                         list_add(&handler_ucast->list, &handler->list);
3464                 }
3465         }
3466
3467         return handler;
3468 }
3469
3470 static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev,
3471                                                         struct mlx5_ib_flow_prio *ft_rx,
3472                                                         struct mlx5_ib_flow_prio *ft_tx,
3473                                                         struct mlx5_flow_destination *dst)
3474 {
3475         struct mlx5_ib_flow_handler *handler_rx;
3476         struct mlx5_ib_flow_handler *handler_tx;
3477         int err;
3478         static const struct ib_flow_attr flow_attr  = {
3479                 .num_of_specs = 0,
3480                 .size = sizeof(flow_attr)
3481         };
3482
3483         handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst);
3484         if (IS_ERR(handler_rx)) {
3485                 err = PTR_ERR(handler_rx);
3486                 goto err;
3487         }
3488
3489         handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst);
3490         if (IS_ERR(handler_tx)) {
3491                 err = PTR_ERR(handler_tx);
3492                 goto err_tx;
3493         }
3494
3495         list_add(&handler_tx->list, &handler_rx->list);
3496
3497         return handler_rx;
3498
3499 err_tx:
3500         mlx5_del_flow_rules(handler_rx->rule);
3501         ft_rx->refcount--;
3502         kfree(handler_rx);
3503 err:
3504         return ERR_PTR(err);
3505 }
3506
3507 static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
3508                                            struct ib_flow_attr *flow_attr,
3509                                            int domain,
3510                                            struct ib_udata *udata)
3511 {
3512         struct mlx5_ib_dev *dev = to_mdev(qp->device);
3513         struct mlx5_ib_qp *mqp = to_mqp(qp);
3514         struct mlx5_ib_flow_handler *handler = NULL;
3515         struct mlx5_flow_destination *dst = NULL;
3516         struct mlx5_ib_flow_prio *ft_prio_tx = NULL;
3517         struct mlx5_ib_flow_prio *ft_prio;
3518         bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
3519         struct mlx5_ib_create_flow *ucmd = NULL, ucmd_hdr;
3520         size_t min_ucmd_sz, required_ucmd_sz;
3521         int err;
3522         int underlay_qpn;
3523
3524         if (udata && udata->inlen) {
3525                 min_ucmd_sz = offsetof(typeof(ucmd_hdr), reserved) +
3526                                 sizeof(ucmd_hdr.reserved);
3527                 if (udata->inlen < min_ucmd_sz)
3528                         return ERR_PTR(-EOPNOTSUPP);
3529
3530                 err = ib_copy_from_udata(&ucmd_hdr, udata, min_ucmd_sz);
3531                 if (err)
3532                         return ERR_PTR(err);
3533
3534                 /* currently supports only one counters data */
3535                 if (ucmd_hdr.ncounters_data > 1)
3536                         return ERR_PTR(-EINVAL);
3537
3538                 required_ucmd_sz = min_ucmd_sz +
3539                         sizeof(struct mlx5_ib_flow_counters_data) *
3540                         ucmd_hdr.ncounters_data;
3541                 if (udata->inlen > required_ucmd_sz &&
3542                     !ib_is_udata_cleared(udata, required_ucmd_sz,
3543                                          udata->inlen - required_ucmd_sz))
3544                         return ERR_PTR(-EOPNOTSUPP);
3545
3546                 ucmd = kzalloc(required_ucmd_sz, GFP_KERNEL);
3547                 if (!ucmd)
3548                         return ERR_PTR(-ENOMEM);
3549
3550                 err = ib_copy_from_udata(ucmd, udata, required_ucmd_sz);
3551                 if (err)
3552                         goto free_ucmd;
3553         }
3554
3555         if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) {
3556                 err = -ENOMEM;
3557                 goto free_ucmd;
3558         }
3559
3560         if (domain != IB_FLOW_DOMAIN_USER ||
3561             flow_attr->port > dev->num_ports ||
3562             (flow_attr->flags & ~(IB_FLOW_ATTR_FLAGS_DONT_TRAP |
3563                                   IB_FLOW_ATTR_FLAGS_EGRESS))) {
3564                 err = -EINVAL;
3565                 goto free_ucmd;
3566         }
3567
3568         if (is_egress &&
3569             (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
3570              flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
3571                 err = -EINVAL;
3572                 goto free_ucmd;
3573         }
3574
3575         dst = kzalloc(sizeof(*dst), GFP_KERNEL);
3576         if (!dst) {
3577                 err = -ENOMEM;
3578                 goto free_ucmd;
3579         }
3580
3581         mutex_lock(&dev->flow_db->lock);
3582
3583         ft_prio = get_flow_table(dev, flow_attr,
3584                                  is_egress ? MLX5_IB_FT_TX : MLX5_IB_FT_RX);
3585         if (IS_ERR(ft_prio)) {
3586                 err = PTR_ERR(ft_prio);
3587                 goto unlock;
3588         }
3589         if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
3590                 ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX);
3591                 if (IS_ERR(ft_prio_tx)) {
3592                         err = PTR_ERR(ft_prio_tx);
3593                         ft_prio_tx = NULL;
3594                         goto destroy_ft;
3595                 }
3596         }
3597
3598         if (is_egress) {
3599                 dst->type = MLX5_FLOW_DESTINATION_TYPE_PORT;
3600         } else {
3601                 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
3602                 if (mqp->flags & MLX5_IB_QP_RSS)
3603                         dst->tir_num = mqp->rss_qp.tirn;
3604                 else
3605                         dst->tir_num = mqp->raw_packet_qp.rq.tirn;
3606         }
3607
3608         if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
3609                 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)  {
3610                         handler = create_dont_trap_rule(dev, ft_prio,
3611                                                         flow_attr, dst);
3612                 } else {
3613                         underlay_qpn = (mqp->flags & MLX5_IB_QP_UNDERLAY) ?
3614                                         mqp->underlay_qpn : 0;
3615                         handler = _create_flow_rule(dev, ft_prio, flow_attr,
3616                                                     dst, underlay_qpn, ucmd);
3617                 }
3618         } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
3619                    flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
3620                 handler = create_leftovers_rule(dev, ft_prio, flow_attr,
3621                                                 dst);
3622         } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
3623                 handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst);
3624         } else {
3625                 err = -EINVAL;
3626                 goto destroy_ft;
3627         }
3628
3629         if (IS_ERR(handler)) {
3630                 err = PTR_ERR(handler);
3631                 handler = NULL;
3632                 goto destroy_ft;
3633         }
3634
3635         mutex_unlock(&dev->flow_db->lock);
3636         kfree(dst);
3637         kfree(ucmd);
3638
3639         return &handler->ibflow;
3640
3641 destroy_ft:
3642         put_flow_table(dev, ft_prio, false);
3643         if (ft_prio_tx)
3644                 put_flow_table(dev, ft_prio_tx, false);
3645 unlock:
3646         mutex_unlock(&dev->flow_db->lock);
3647         kfree(dst);
3648 free_ucmd:
3649         kfree(ucmd);
3650         return ERR_PTR(err);
3651 }
3652
3653 static struct mlx5_ib_flow_prio *
3654 _get_flow_table(struct mlx5_ib_dev *dev,
3655                 struct mlx5_ib_flow_matcher *fs_matcher,
3656                 bool mcast)
3657 {
3658         struct mlx5_flow_namespace *ns = NULL;
3659         struct mlx5_ib_flow_prio *prio;
3660         int max_table_size;
3661         u32 flags = 0;
3662         int priority;
3663
3664         if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) {
3665                 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
3666                                         log_max_ft_size));
3667                 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap))
3668                         flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
3669                 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
3670                                               reformat_l3_tunnel_to_l2))
3671                         flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
3672         } else { /* Can only be MLX5_FLOW_NAMESPACE_EGRESS */
3673                 max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev,
3674                                         log_max_ft_size));
3675                 if (MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat))
3676                         flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
3677         }
3678
3679         if (max_table_size < MLX5_FS_MAX_ENTRIES)
3680                 return ERR_PTR(-ENOMEM);
3681
3682         if (mcast)
3683                 priority = MLX5_IB_FLOW_MCAST_PRIO;
3684         else
3685                 priority = ib_prio_to_core_prio(fs_matcher->priority, false);
3686
3687         ns = mlx5_get_flow_namespace(dev->mdev, fs_matcher->ns_type);
3688         if (!ns)
3689                 return ERR_PTR(-ENOTSUPP);
3690
3691         if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS)
3692                 prio = &dev->flow_db->prios[priority];
3693         else
3694                 prio = &dev->flow_db->egress_prios[priority];
3695
3696         if (prio->flow_table)
3697                 return prio;
3698
3699         return _get_prio(ns, prio, priority, MLX5_FS_MAX_ENTRIES,
3700                          MLX5_FS_MAX_TYPES, flags);
3701 }
3702
3703 static struct mlx5_ib_flow_handler *
3704 _create_raw_flow_rule(struct mlx5_ib_dev *dev,
3705                       struct mlx5_ib_flow_prio *ft_prio,
3706                       struct mlx5_flow_destination *dst,
3707                       struct mlx5_ib_flow_matcher  *fs_matcher,
3708                       struct mlx5_flow_act *flow_act,
3709                       void *cmd_in, int inlen)
3710 {
3711         struct mlx5_ib_flow_handler *handler;
3712         struct mlx5_flow_spec *spec;
3713         struct mlx5_flow_table *ft = ft_prio->flow_table;
3714         int err = 0;
3715
3716         spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
3717         handler = kzalloc(sizeof(*handler), GFP_KERNEL);
3718         if (!handler || !spec) {
3719                 err = -ENOMEM;
3720                 goto free;
3721         }
3722
3723         INIT_LIST_HEAD(&handler->list);
3724
3725         memcpy(spec->match_value, cmd_in, inlen);
3726         memcpy(spec->match_criteria, fs_matcher->matcher_mask.match_params,
3727                fs_matcher->mask_len);
3728         spec->match_criteria_enable = fs_matcher->match_criteria_enable;
3729
3730         handler->rule = mlx5_add_flow_rules(ft, spec,
3731                                             flow_act, dst, 1);
3732
3733         if (IS_ERR(handler->rule)) {
3734                 err = PTR_ERR(handler->rule);
3735                 goto free;
3736         }
3737
3738         ft_prio->refcount++;
3739         handler->prio = ft_prio;
3740         handler->dev = dev;
3741         ft_prio->flow_table = ft;
3742
3743 free:
3744         if (err)
3745                 kfree(handler);
3746         kvfree(spec);
3747         return err ? ERR_PTR(err) : handler;
3748 }
3749
3750 static bool raw_fs_is_multicast(struct mlx5_ib_flow_matcher *fs_matcher,
3751                                 void *match_v)
3752 {
3753         void *match_c;
3754         void *match_v_set_lyr_2_4, *match_c_set_lyr_2_4;
3755         void *dmac, *dmac_mask;
3756         void *ipv4, *ipv4_mask;
3757
3758         if (!(fs_matcher->match_criteria_enable &
3759               (1 << MATCH_CRITERIA_ENABLE_OUTER_BIT)))
3760                 return false;
3761
3762         match_c = fs_matcher->matcher_mask.match_params;
3763         match_v_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_v,
3764                                            outer_headers);
3765         match_c_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_c,
3766                                            outer_headers);
3767
3768         dmac = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
3769                             dmac_47_16);
3770         dmac_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
3771                                  dmac_47_16);
3772
3773         if (is_multicast_ether_addr(dmac) &&
3774             is_multicast_ether_addr(dmac_mask))
3775                 return true;
3776
3777         ipv4 = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
3778                             dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
3779
3780         ipv4_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
3781                                  dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
3782
3783         if (ipv4_is_multicast(*(__be32 *)(ipv4)) &&
3784             ipv4_is_multicast(*(__be32 *)(ipv4_mask)))
3785                 return true;
3786
3787         return false;
3788 }
3789
3790 struct mlx5_ib_flow_handler *
3791 mlx5_ib_raw_fs_rule_add(struct mlx5_ib_dev *dev,
3792                         struct mlx5_ib_flow_matcher *fs_matcher,
3793                         struct mlx5_flow_act *flow_act,
3794                         void *cmd_in, int inlen, int dest_id,
3795                         int dest_type)
3796 {
3797         struct mlx5_flow_destination *dst;
3798         struct mlx5_ib_flow_prio *ft_prio;
3799         struct mlx5_ib_flow_handler *handler;
3800         bool mcast;
3801         int err;
3802
3803         if (fs_matcher->flow_type != MLX5_IB_FLOW_TYPE_NORMAL)
3804                 return ERR_PTR(-EOPNOTSUPP);
3805
3806         if (fs_matcher->priority > MLX5_IB_FLOW_LAST_PRIO)
3807                 return ERR_PTR(-ENOMEM);
3808
3809         dst = kzalloc(sizeof(*dst), GFP_KERNEL);
3810         if (!dst)
3811                 return ERR_PTR(-ENOMEM);
3812
3813         mcast = raw_fs_is_multicast(fs_matcher, cmd_in);
3814         mutex_lock(&dev->flow_db->lock);
3815
3816         ft_prio = _get_flow_table(dev, fs_matcher, mcast);
3817         if (IS_ERR(ft_prio)) {
3818                 err = PTR_ERR(ft_prio);
3819                 goto unlock;
3820         }
3821
3822         if (dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR) {
3823                 dst->type = dest_type;
3824                 dst->tir_num = dest_id;
3825                 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
3826         } else if (dest_type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE) {
3827                 dst->type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM;
3828                 dst->ft_num = dest_id;
3829                 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
3830         } else {
3831                 dst->type = MLX5_FLOW_DESTINATION_TYPE_PORT;
3832                 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
3833         }
3834
3835         handler = _create_raw_flow_rule(dev, ft_prio, dst, fs_matcher, flow_act,
3836                                         cmd_in, inlen);
3837
3838         if (IS_ERR(handler)) {
3839                 err = PTR_ERR(handler);
3840                 goto destroy_ft;
3841         }
3842
3843         mutex_unlock(&dev->flow_db->lock);
3844         atomic_inc(&fs_matcher->usecnt);
3845         handler->flow_matcher = fs_matcher;
3846
3847         kfree(dst);
3848
3849         return handler;
3850
3851 destroy_ft:
3852         put_flow_table(dev, ft_prio, false);
3853 unlock:
3854         mutex_unlock(&dev->flow_db->lock);
3855         kfree(dst);
3856
3857         return ERR_PTR(err);
3858 }
3859
3860 static u32 mlx5_ib_flow_action_flags_to_accel_xfrm_flags(u32 mlx5_flags)
3861 {
3862         u32 flags = 0;
3863
3864         if (mlx5_flags & MLX5_IB_UAPI_FLOW_ACTION_FLAGS_REQUIRE_METADATA)
3865                 flags |= MLX5_ACCEL_XFRM_FLAG_REQUIRE_METADATA;
3866
3867         return flags;
3868 }
3869
3870 #define MLX5_FLOW_ACTION_ESP_CREATE_LAST_SUPPORTED      MLX5_IB_UAPI_FLOW_ACTION_FLAGS_REQUIRE_METADATA
3871 static struct ib_flow_action *
3872 mlx5_ib_create_flow_action_esp(struct ib_device *device,
3873                                const struct ib_flow_action_attrs_esp *attr,
3874                                struct uverbs_attr_bundle *attrs)
3875 {
3876         struct mlx5_ib_dev *mdev = to_mdev(device);
3877         struct ib_uverbs_flow_action_esp_keymat_aes_gcm *aes_gcm;
3878         struct mlx5_accel_esp_xfrm_attrs accel_attrs = {};
3879         struct mlx5_ib_flow_action *action;
3880         u64 action_flags;
3881         u64 flags;
3882         int err = 0;
3883
3884         err = uverbs_get_flags64(
3885                 &action_flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_ACTION_FLAGS,
3886                 ((MLX5_FLOW_ACTION_ESP_CREATE_LAST_SUPPORTED << 1) - 1));
3887         if (err)
3888                 return ERR_PTR(err);
3889
3890         flags = mlx5_ib_flow_action_flags_to_accel_xfrm_flags(action_flags);
3891
3892         /* We current only support a subset of the standard features. Only a
3893          * keymat of type AES_GCM, with icv_len == 16, iv_algo == SEQ and esn
3894          * (with overlap). Full offload mode isn't supported.
3895          */
3896         if (!attr->keymat || attr->replay || attr->encap ||
3897             attr->spi || attr->seq || attr->tfc_pad ||
3898             attr->hard_limit_pkts ||
3899             (attr->flags & ~(IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED |
3900                              IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ENCRYPT)))
3901                 return ERR_PTR(-EOPNOTSUPP);
3902
3903         if (attr->keymat->protocol !=
3904             IB_UVERBS_FLOW_ACTION_ESP_KEYMAT_AES_GCM)
3905                 return ERR_PTR(-EOPNOTSUPP);
3906
3907         aes_gcm = &attr->keymat->keymat.aes_gcm;
3908
3909         if (aes_gcm->icv_len != 16 ||
3910             aes_gcm->iv_algo != IB_UVERBS_FLOW_ACTION_IV_ALGO_SEQ)
3911                 return ERR_PTR(-EOPNOTSUPP);
3912
3913         action = kmalloc(sizeof(*action), GFP_KERNEL);
3914         if (!action)
3915                 return ERR_PTR(-ENOMEM);
3916
3917         action->esp_aes_gcm.ib_flags = attr->flags;
3918         memcpy(&accel_attrs.keymat.aes_gcm.aes_key, &aes_gcm->aes_key,
3919                sizeof(accel_attrs.keymat.aes_gcm.aes_key));
3920         accel_attrs.keymat.aes_gcm.key_len = aes_gcm->key_len * 8;
3921         memcpy(&accel_attrs.keymat.aes_gcm.salt, &aes_gcm->salt,
3922                sizeof(accel_attrs.keymat.aes_gcm.salt));
3923         memcpy(&accel_attrs.keymat.aes_gcm.seq_iv, &aes_gcm->iv,
3924                sizeof(accel_attrs.keymat.aes_gcm.seq_iv));
3925         accel_attrs.keymat.aes_gcm.icv_len = aes_gcm->icv_len * 8;
3926         accel_attrs.keymat.aes_gcm.iv_algo = MLX5_ACCEL_ESP_AES_GCM_IV_ALGO_SEQ;
3927         accel_attrs.keymat_type = MLX5_ACCEL_ESP_KEYMAT_AES_GCM;
3928
3929         accel_attrs.esn = attr->esn;
3930         if (attr->flags & IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED)
3931                 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_TRIGGERED;
3932         if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)
3933                 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP;
3934
3935         if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ENCRYPT)
3936                 accel_attrs.action |= MLX5_ACCEL_ESP_ACTION_ENCRYPT;
3937
3938         action->esp_aes_gcm.ctx =
3939                 mlx5_accel_esp_create_xfrm(mdev->mdev, &accel_attrs, flags);
3940         if (IS_ERR(action->esp_aes_gcm.ctx)) {
3941                 err = PTR_ERR(action->esp_aes_gcm.ctx);
3942                 goto err_parse;
3943         }
3944
3945         action->esp_aes_gcm.ib_flags = attr->flags;
3946
3947         return &action->ib_action;
3948
3949 err_parse:
3950         kfree(action);
3951         return ERR_PTR(err);
3952 }
3953
3954 static int
3955 mlx5_ib_modify_flow_action_esp(struct ib_flow_action *action,
3956                                const struct ib_flow_action_attrs_esp *attr,
3957                                struct uverbs_attr_bundle *attrs)
3958 {
3959         struct mlx5_ib_flow_action *maction = to_mflow_act(action);
3960         struct mlx5_accel_esp_xfrm_attrs accel_attrs;
3961         int err = 0;
3962
3963         if (attr->keymat || attr->replay || attr->encap ||
3964             attr->spi || attr->seq || attr->tfc_pad ||
3965             attr->hard_limit_pkts ||
3966             (attr->flags & ~(IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED |
3967                              IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS |
3968                              IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)))
3969                 return -EOPNOTSUPP;
3970
3971         /* Only the ESN value or the MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP can
3972          * be modified.
3973          */
3974         if (!(maction->esp_aes_gcm.ib_flags &
3975               IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED) &&
3976             attr->flags & (IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED |
3977                            IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW))
3978                 return -EINVAL;
3979
3980         memcpy(&accel_attrs, &maction->esp_aes_gcm.ctx->attrs,
3981                sizeof(accel_attrs));
3982
3983         accel_attrs.esn = attr->esn;
3984         if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)
3985                 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP;
3986         else
3987                 accel_attrs.flags &= ~MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP;
3988
3989         err = mlx5_accel_esp_modify_xfrm(maction->esp_aes_gcm.ctx,
3990                                          &accel_attrs);
3991         if (err)
3992                 return err;
3993
3994         maction->esp_aes_gcm.ib_flags &=
3995                 ~IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW;
3996         maction->esp_aes_gcm.ib_flags |=
3997                 attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW;
3998
3999         return 0;
4000 }
4001
4002 static int mlx5_ib_destroy_flow_action(struct ib_flow_action *action)
4003 {
4004         struct mlx5_ib_flow_action *maction = to_mflow_act(action);
4005
4006         switch (action->type) {
4007         case IB_FLOW_ACTION_ESP:
4008                 /*
4009                  * We only support aes_gcm by now, so we implicitly know this is
4010                  * the underline crypto.
4011                  */
4012                 mlx5_accel_esp_destroy_xfrm(maction->esp_aes_gcm.ctx);
4013                 break;
4014         case IB_FLOW_ACTION_UNSPECIFIED:
4015                 mlx5_ib_destroy_flow_action_raw(maction);
4016                 break;
4017         default:
4018                 WARN_ON(true);
4019                 break;
4020         }
4021
4022         kfree(maction);
4023         return 0;
4024 }
4025
4026 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
4027 {
4028         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4029         struct mlx5_ib_qp *mqp = to_mqp(ibqp);
4030         int err;
4031         u16 uid;
4032
4033         uid = ibqp->pd ?
4034                 to_mpd(ibqp->pd)->uid : 0;
4035
4036         if (mqp->flags & MLX5_IB_QP_UNDERLAY) {
4037                 mlx5_ib_dbg(dev, "Attaching a multi cast group to underlay QP is not supported\n");
4038                 return -EOPNOTSUPP;
4039         }
4040
4041         err = mlx5_cmd_attach_mcg(dev->mdev, gid, ibqp->qp_num, uid);
4042         if (err)
4043                 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
4044                              ibqp->qp_num, gid->raw);
4045
4046         return err;
4047 }
4048
4049 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
4050 {
4051         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4052         int err;
4053         u16 uid;
4054
4055         uid = ibqp->pd ?
4056                 to_mpd(ibqp->pd)->uid : 0;
4057         err = mlx5_cmd_detach_mcg(dev->mdev, gid, ibqp->qp_num, uid);
4058         if (err)
4059                 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
4060                              ibqp->qp_num, gid->raw);
4061
4062         return err;
4063 }
4064
4065 static int init_node_data(struct mlx5_ib_dev *dev)
4066 {
4067         int err;
4068
4069         err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc);
4070         if (err)
4071                 return err;
4072
4073         dev->mdev->rev_id = dev->mdev->pdev->revision;
4074
4075         return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid);
4076 }
4077
4078 static ssize_t fw_pages_show(struct device *device,
4079                              struct device_attribute *attr, char *buf)
4080 {
4081         struct mlx5_ib_dev *dev =
4082                 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
4083
4084         return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages);
4085 }
4086 static DEVICE_ATTR_RO(fw_pages);
4087
4088 static ssize_t reg_pages_show(struct device *device,
4089                               struct device_attribute *attr, char *buf)
4090 {
4091         struct mlx5_ib_dev *dev =
4092                 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
4093
4094         return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages));
4095 }
4096 static DEVICE_ATTR_RO(reg_pages);
4097
4098 static ssize_t hca_type_show(struct device *device,
4099                              struct device_attribute *attr, char *buf)
4100 {
4101         struct mlx5_ib_dev *dev =
4102                 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
4103         return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
4104 }
4105 static DEVICE_ATTR_RO(hca_type);
4106
4107 static ssize_t hw_rev_show(struct device *device,
4108                            struct device_attribute *attr, char *buf)
4109 {
4110         struct mlx5_ib_dev *dev =
4111                 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
4112         return sprintf(buf, "%x\n", dev->mdev->rev_id);
4113 }
4114 static DEVICE_ATTR_RO(hw_rev);
4115
4116 static ssize_t board_id_show(struct device *device,
4117                              struct device_attribute *attr, char *buf)
4118 {
4119         struct mlx5_ib_dev *dev =
4120                 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
4121         return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
4122                        dev->mdev->board_id);
4123 }
4124 static DEVICE_ATTR_RO(board_id);
4125
4126 static struct attribute *mlx5_class_attributes[] = {
4127         &dev_attr_hw_rev.attr,
4128         &dev_attr_hca_type.attr,
4129         &dev_attr_board_id.attr,
4130         &dev_attr_fw_pages.attr,
4131         &dev_attr_reg_pages.attr,
4132         NULL,
4133 };
4134
4135 static const struct attribute_group mlx5_attr_group = {
4136         .attrs = mlx5_class_attributes,
4137 };
4138
4139 static void pkey_change_handler(struct work_struct *work)
4140 {
4141         struct mlx5_ib_port_resources *ports =
4142                 container_of(work, struct mlx5_ib_port_resources,
4143                              pkey_change_work);
4144
4145         mutex_lock(&ports->devr->mutex);
4146         mlx5_ib_gsi_pkey_change(ports->gsi);
4147         mutex_unlock(&ports->devr->mutex);
4148 }
4149
4150 static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev)
4151 {
4152         struct mlx5_ib_qp *mqp;
4153         struct mlx5_ib_cq *send_mcq, *recv_mcq;
4154         struct mlx5_core_cq *mcq;
4155         struct list_head cq_armed_list;
4156         unsigned long flags_qp;
4157         unsigned long flags_cq;
4158         unsigned long flags;
4159
4160         INIT_LIST_HEAD(&cq_armed_list);
4161
4162         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
4163         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
4164         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
4165                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
4166                 if (mqp->sq.tail != mqp->sq.head) {
4167                         send_mcq = to_mcq(mqp->ibqp.send_cq);
4168                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
4169                         if (send_mcq->mcq.comp &&
4170                             mqp->ibqp.send_cq->comp_handler) {
4171                                 if (!send_mcq->mcq.reset_notify_added) {
4172                                         send_mcq->mcq.reset_notify_added = 1;
4173                                         list_add_tail(&send_mcq->mcq.reset_notify,
4174                                                       &cq_armed_list);
4175                                 }
4176                         }
4177                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
4178                 }
4179                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
4180                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
4181                 /* no handling is needed for SRQ */
4182                 if (!mqp->ibqp.srq) {
4183                         if (mqp->rq.tail != mqp->rq.head) {
4184                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
4185                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
4186                                 if (recv_mcq->mcq.comp &&
4187                                     mqp->ibqp.recv_cq->comp_handler) {
4188                                         if (!recv_mcq->mcq.reset_notify_added) {
4189                                                 recv_mcq->mcq.reset_notify_added = 1;
4190                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
4191                                                               &cq_armed_list);
4192                                         }
4193                                 }
4194                                 spin_unlock_irqrestore(&recv_mcq->lock,
4195                                                        flags_cq);
4196                         }
4197                 }
4198                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
4199         }
4200         /*At that point all inflight post send were put to be executed as of we
4201          * lock/unlock above locks Now need to arm all involved CQs.
4202          */
4203         list_for_each_entry(mcq, &cq_armed_list, reset_notify) {
4204                 mcq->comp(mcq);
4205         }
4206         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
4207 }
4208
4209 static void delay_drop_handler(struct work_struct *work)
4210 {
4211         int err;
4212         struct mlx5_ib_delay_drop *delay_drop =
4213                 container_of(work, struct mlx5_ib_delay_drop,
4214                              delay_drop_work);
4215
4216         atomic_inc(&delay_drop->events_cnt);
4217
4218         mutex_lock(&delay_drop->lock);
4219         err = mlx5_core_set_delay_drop(delay_drop->dev->mdev,
4220                                        delay_drop->timeout);
4221         if (err) {
4222                 mlx5_ib_warn(delay_drop->dev, "Failed to set delay drop, timeout=%u\n",
4223                              delay_drop->timeout);
4224                 delay_drop->activate = false;
4225         }
4226         mutex_unlock(&delay_drop->lock);
4227 }
4228
4229 static void mlx5_ib_handle_event(struct work_struct *_work)
4230 {
4231         struct mlx5_ib_event_work *work =
4232                 container_of(_work, struct mlx5_ib_event_work, work);
4233         struct mlx5_ib_dev *ibdev;
4234         struct ib_event ibev;
4235         bool fatal = false;
4236         u8 port = (u8)work->param;
4237
4238         if (mlx5_core_is_mp_slave(work->dev)) {
4239                 ibdev = mlx5_ib_get_ibdev_from_mpi(work->context);
4240                 if (!ibdev)
4241                         goto out;
4242         } else {
4243                 ibdev = work->context;
4244         }
4245
4246         switch (work->event) {
4247         case MLX5_DEV_EVENT_SYS_ERROR:
4248                 ibev.event = IB_EVENT_DEVICE_FATAL;
4249                 mlx5_ib_handle_internal_error(ibdev);
4250                 fatal = true;
4251                 break;
4252
4253         case MLX5_DEV_EVENT_PORT_UP:
4254         case MLX5_DEV_EVENT_PORT_DOWN:
4255         case MLX5_DEV_EVENT_PORT_INITIALIZED:
4256                 /* In RoCE, port up/down events are handled in
4257                  * mlx5_netdev_event().
4258                  */
4259                 if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) ==
4260                         IB_LINK_LAYER_ETHERNET)
4261                         goto out;
4262
4263                 ibev.event = (work->event == MLX5_DEV_EVENT_PORT_UP) ?
4264                              IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
4265                 break;
4266
4267         case MLX5_DEV_EVENT_LID_CHANGE:
4268                 ibev.event = IB_EVENT_LID_CHANGE;
4269                 break;
4270
4271         case MLX5_DEV_EVENT_PKEY_CHANGE:
4272                 ibev.event = IB_EVENT_PKEY_CHANGE;
4273                 schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work);
4274                 break;
4275
4276         case MLX5_DEV_EVENT_GUID_CHANGE:
4277                 ibev.event = IB_EVENT_GID_CHANGE;
4278                 break;
4279
4280         case MLX5_DEV_EVENT_CLIENT_REREG:
4281                 ibev.event = IB_EVENT_CLIENT_REREGISTER;
4282                 break;
4283         case MLX5_DEV_EVENT_DELAY_DROP_TIMEOUT:
4284                 schedule_work(&ibdev->delay_drop.delay_drop_work);
4285                 goto out;
4286         default:
4287                 goto out;
4288         }
4289
4290         ibev.device           = &ibdev->ib_dev;
4291         ibev.element.port_num = port;
4292
4293         if (!rdma_is_port_valid(&ibdev->ib_dev, port)) {
4294                 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
4295                 goto out;
4296         }
4297
4298         if (ibdev->ib_active)
4299                 ib_dispatch_event(&ibev);
4300
4301         if (fatal)
4302                 ibdev->ib_active = false;
4303 out:
4304         kfree(work);
4305 }
4306
4307 static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
4308                           enum mlx5_dev_event event, unsigned long param)
4309 {
4310         struct mlx5_ib_event_work *work;
4311
4312         work = kmalloc(sizeof(*work), GFP_ATOMIC);
4313         if (!work)
4314                 return;
4315
4316         INIT_WORK(&work->work, mlx5_ib_handle_event);
4317         work->dev = dev;
4318         work->param = param;
4319         work->context = context;
4320         work->event = event;
4321
4322         queue_work(mlx5_ib_event_wq, &work->work);
4323 }
4324
4325 static int set_has_smi_cap(struct mlx5_ib_dev *dev)
4326 {
4327         struct mlx5_hca_vport_context vport_ctx;
4328         int err;
4329         int port;
4330
4331         for (port = 1; port <= dev->num_ports; port++) {
4332                 dev->mdev->port_caps[port - 1].has_smi = false;
4333                 if (MLX5_CAP_GEN(dev->mdev, port_type) ==
4334                     MLX5_CAP_PORT_TYPE_IB) {
4335                         if (MLX5_CAP_GEN(dev->mdev, ib_virt)) {
4336                                 err = mlx5_query_hca_vport_context(dev->mdev, 0,
4337                                                                    port, 0,
4338                                                                    &vport_ctx);
4339                                 if (err) {
4340                                         mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n",
4341                                                     port, err);
4342                                         return err;
4343                                 }
4344                                 dev->mdev->port_caps[port - 1].has_smi =
4345                                         vport_ctx.has_smi;
4346                         } else {
4347                                 dev->mdev->port_caps[port - 1].has_smi = true;
4348                         }
4349                 }
4350         }
4351         return 0;
4352 }
4353
4354 static void get_ext_port_caps(struct mlx5_ib_dev *dev)
4355 {
4356         int port;
4357
4358         for (port = 1; port <= dev->num_ports; port++)
4359                 mlx5_query_ext_port_caps(dev, port);
4360 }
4361
4362 static int get_port_caps(struct mlx5_ib_dev *dev, u8 port)
4363 {
4364         struct ib_device_attr *dprops = NULL;
4365         struct ib_port_attr *pprops = NULL;
4366         int err = -ENOMEM;
4367         struct ib_udata uhw = {.inlen = 0, .outlen = 0};
4368
4369         pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
4370         if (!pprops)
4371                 goto out;
4372
4373         dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
4374         if (!dprops)
4375                 goto out;
4376
4377         err = set_has_smi_cap(dev);
4378         if (err)
4379                 goto out;
4380
4381         err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw);
4382         if (err) {
4383                 mlx5_ib_warn(dev, "query_device failed %d\n", err);
4384                 goto out;
4385         }
4386
4387         memset(pprops, 0, sizeof(*pprops));
4388         err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
4389         if (err) {
4390                 mlx5_ib_warn(dev, "query_port %d failed %d\n",
4391                              port, err);
4392                 goto out;
4393         }
4394
4395         dev->mdev->port_caps[port - 1].pkey_table_len =
4396                                         dprops->max_pkeys;
4397         dev->mdev->port_caps[port - 1].gid_table_len =
4398                                         pprops->gid_tbl_len;
4399         mlx5_ib_dbg(dev, "port %d: pkey_table_len %d, gid_table_len %d\n",
4400                     port, dprops->max_pkeys, pprops->gid_tbl_len);
4401
4402 out:
4403         kfree(pprops);
4404         kfree(dprops);
4405
4406         return err;
4407 }
4408
4409 static void destroy_umrc_res(struct mlx5_ib_dev *dev)
4410 {
4411         int err;
4412
4413         err = mlx5_mr_cache_cleanup(dev);
4414         if (err)
4415                 mlx5_ib_warn(dev, "mr cache cleanup failed\n");
4416
4417         if (dev->umrc.qp)
4418                 mlx5_ib_destroy_qp(dev->umrc.qp);
4419         if (dev->umrc.cq)
4420                 ib_free_cq(dev->umrc.cq);
4421         if (dev->umrc.pd)
4422                 ib_dealloc_pd(dev->umrc.pd);
4423 }
4424
4425 enum {
4426         MAX_UMR_WR = 128,
4427 };
4428
4429 static int create_umr_res(struct mlx5_ib_dev *dev)
4430 {
4431         struct ib_qp_init_attr *init_attr = NULL;
4432         struct ib_qp_attr *attr = NULL;
4433         struct ib_pd *pd;
4434         struct ib_cq *cq;
4435         struct ib_qp *qp;
4436         int ret;
4437
4438         attr = kzalloc(sizeof(*attr), GFP_KERNEL);
4439         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
4440         if (!attr || !init_attr) {
4441                 ret = -ENOMEM;
4442                 goto error_0;
4443         }
4444
4445         pd = ib_alloc_pd(&dev->ib_dev, 0);
4446         if (IS_ERR(pd)) {
4447                 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
4448                 ret = PTR_ERR(pd);
4449                 goto error_0;
4450         }
4451
4452         cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ);
4453         if (IS_ERR(cq)) {
4454                 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
4455                 ret = PTR_ERR(cq);
4456                 goto error_2;
4457         }
4458
4459         init_attr->send_cq = cq;
4460         init_attr->recv_cq = cq;
4461         init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
4462         init_attr->cap.max_send_wr = MAX_UMR_WR;
4463         init_attr->cap.max_send_sge = 1;
4464         init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
4465         init_attr->port_num = 1;
4466         qp = mlx5_ib_create_qp(pd, init_attr, NULL);
4467         if (IS_ERR(qp)) {
4468                 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
4469                 ret = PTR_ERR(qp);
4470                 goto error_3;
4471         }
4472         qp->device     = &dev->ib_dev;
4473         qp->real_qp    = qp;
4474         qp->uobject    = NULL;
4475         qp->qp_type    = MLX5_IB_QPT_REG_UMR;
4476         qp->send_cq    = init_attr->send_cq;
4477         qp->recv_cq    = init_attr->recv_cq;
4478
4479         attr->qp_state = IB_QPS_INIT;
4480         attr->port_num = 1;
4481         ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
4482                                 IB_QP_PORT, NULL);
4483         if (ret) {
4484                 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
4485                 goto error_4;
4486         }
4487
4488         memset(attr, 0, sizeof(*attr));
4489         attr->qp_state = IB_QPS_RTR;
4490         attr->path_mtu = IB_MTU_256;
4491
4492         ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
4493         if (ret) {
4494                 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
4495                 goto error_4;
4496         }
4497
4498         memset(attr, 0, sizeof(*attr));
4499         attr->qp_state = IB_QPS_RTS;
4500         ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
4501         if (ret) {
4502                 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
4503                 goto error_4;
4504         }
4505
4506         dev->umrc.qp = qp;
4507         dev->umrc.cq = cq;
4508         dev->umrc.pd = pd;
4509
4510         sema_init(&dev->umrc.sem, MAX_UMR_WR);
4511         ret = mlx5_mr_cache_init(dev);
4512         if (ret) {
4513                 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
4514                 goto error_4;
4515         }
4516
4517         kfree(attr);
4518         kfree(init_attr);
4519
4520         return 0;
4521
4522 error_4:
4523         mlx5_ib_destroy_qp(qp);
4524         dev->umrc.qp = NULL;
4525
4526 error_3:
4527         ib_free_cq(cq);
4528         dev->umrc.cq = NULL;
4529
4530 error_2:
4531         ib_dealloc_pd(pd);
4532         dev->umrc.pd = NULL;
4533
4534 error_0:
4535         kfree(attr);
4536         kfree(init_attr);
4537         return ret;
4538 }
4539
4540 static u8 mlx5_get_umr_fence(u8 umr_fence_cap)
4541 {
4542         switch (umr_fence_cap) {
4543         case MLX5_CAP_UMR_FENCE_NONE:
4544                 return MLX5_FENCE_MODE_NONE;
4545         case MLX5_CAP_UMR_FENCE_SMALL:
4546                 return MLX5_FENCE_MODE_INITIATOR_SMALL;
4547         default:
4548                 return MLX5_FENCE_MODE_STRONG_ORDERING;
4549         }
4550 }
4551
4552 static int create_dev_resources(struct mlx5_ib_resources *devr)
4553 {
4554         struct ib_srq_init_attr attr;
4555         struct mlx5_ib_dev *dev;
4556         struct ib_cq_init_attr cq_attr = {.cqe = 1};
4557         int port;
4558         int ret = 0;
4559
4560         dev = container_of(devr, struct mlx5_ib_dev, devr);
4561
4562         mutex_init(&devr->mutex);
4563
4564         devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
4565         if (IS_ERR(devr->p0)) {
4566                 ret = PTR_ERR(devr->p0);
4567                 goto error0;
4568         }
4569         devr->p0->device  = &dev->ib_dev;
4570         devr->p0->uobject = NULL;
4571         atomic_set(&devr->p0->usecnt, 0);
4572
4573         devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, &cq_attr, NULL, NULL);
4574         if (IS_ERR(devr->c0)) {
4575                 ret = PTR_ERR(devr->c0);
4576                 goto error1;
4577         }
4578         devr->c0->device        = &dev->ib_dev;
4579         devr->c0->uobject       = NULL;
4580         devr->c0->comp_handler  = NULL;
4581         devr->c0->event_handler = NULL;
4582         devr->c0->cq_context    = NULL;
4583         atomic_set(&devr->c0->usecnt, 0);
4584
4585         devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
4586         if (IS_ERR(devr->x0)) {
4587                 ret = PTR_ERR(devr->x0);
4588                 goto error2;
4589         }
4590         devr->x0->device = &dev->ib_dev;
4591         devr->x0->inode = NULL;
4592         atomic_set(&devr->x0->usecnt, 0);
4593         mutex_init(&devr->x0->tgt_qp_mutex);
4594         INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
4595
4596         devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
4597         if (IS_ERR(devr->x1)) {
4598                 ret = PTR_ERR(devr->x1);
4599                 goto error3;
4600         }
4601         devr->x1->device = &dev->ib_dev;
4602         devr->x1->inode = NULL;
4603         atomic_set(&devr->x1->usecnt, 0);
4604         mutex_init(&devr->x1->tgt_qp_mutex);
4605         INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
4606
4607         memset(&attr, 0, sizeof(attr));
4608         attr.attr.max_sge = 1;
4609         attr.attr.max_wr = 1;
4610         attr.srq_type = IB_SRQT_XRC;
4611         attr.ext.cq = devr->c0;
4612         attr.ext.xrc.xrcd = devr->x0;
4613
4614         devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
4615         if (IS_ERR(devr->s0)) {
4616                 ret = PTR_ERR(devr->s0);
4617                 goto error4;
4618         }
4619         devr->s0->device        = &dev->ib_dev;
4620         devr->s0->pd            = devr->p0;
4621         devr->s0->uobject       = NULL;
4622         devr->s0->event_handler = NULL;
4623         devr->s0->srq_context   = NULL;
4624         devr->s0->srq_type      = IB_SRQT_XRC;
4625         devr->s0->ext.xrc.xrcd  = devr->x0;
4626         devr->s0->ext.cq        = devr->c0;
4627         atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
4628         atomic_inc(&devr->s0->ext.cq->usecnt);
4629         atomic_inc(&devr->p0->usecnt);
4630         atomic_set(&devr->s0->usecnt, 0);
4631
4632         memset(&attr, 0, sizeof(attr));
4633         attr.attr.max_sge = 1;
4634         attr.attr.max_wr = 1;
4635         attr.srq_type = IB_SRQT_BASIC;
4636         devr->s1 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
4637         if (IS_ERR(devr->s1)) {
4638                 ret = PTR_ERR(devr->s1);
4639                 goto error5;
4640         }
4641         devr->s1->device        = &dev->ib_dev;
4642         devr->s1->pd            = devr->p0;
4643         devr->s1->uobject       = NULL;
4644         devr->s1->event_handler = NULL;
4645         devr->s1->srq_context   = NULL;
4646         devr->s1->srq_type      = IB_SRQT_BASIC;
4647         devr->s1->ext.cq        = devr->c0;
4648         atomic_inc(&devr->p0->usecnt);
4649         atomic_set(&devr->s1->usecnt, 0);
4650
4651         for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) {
4652                 INIT_WORK(&devr->ports[port].pkey_change_work,
4653                           pkey_change_handler);
4654                 devr->ports[port].devr = devr;
4655         }
4656
4657         return 0;
4658
4659 error5:
4660         mlx5_ib_destroy_srq(devr->s0);
4661 error4:
4662         mlx5_ib_dealloc_xrcd(devr->x1);
4663 error3:
4664         mlx5_ib_dealloc_xrcd(devr->x0);
4665 error2:
4666         mlx5_ib_destroy_cq(devr->c0);
4667 error1:
4668         mlx5_ib_dealloc_pd(devr->p0);
4669 error0:
4670         return ret;
4671 }
4672
4673 static void destroy_dev_resources(struct mlx5_ib_resources *devr)
4674 {
4675         struct mlx5_ib_dev *dev =
4676                 container_of(devr, struct mlx5_ib_dev, devr);
4677         int port;
4678
4679         mlx5_ib_destroy_srq(devr->s1);
4680         mlx5_ib_destroy_srq(devr->s0);
4681         mlx5_ib_dealloc_xrcd(devr->x0);
4682         mlx5_ib_dealloc_xrcd(devr->x1);
4683         mlx5_ib_destroy_cq(devr->c0);
4684         mlx5_ib_dealloc_pd(devr->p0);
4685
4686         /* Make sure no change P_Key work items are still executing */
4687         for (port = 0; port < dev->num_ports; ++port)
4688                 cancel_work_sync(&devr->ports[port].pkey_change_work);
4689 }
4690
4691 static u32 get_core_cap_flags(struct ib_device *ibdev,
4692                               struct mlx5_hca_vport_context *rep)
4693 {
4694         struct mlx5_ib_dev *dev = to_mdev(ibdev);
4695         enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1);
4696         u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type);
4697         u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version);
4698         bool raw_support = !mlx5_core_mp_enabled(dev->mdev);
4699         u32 ret = 0;
4700
4701         if (rep->grh_required)
4702                 ret |= RDMA_CORE_CAP_IB_GRH_REQUIRED;
4703
4704         if (ll == IB_LINK_LAYER_INFINIBAND)
4705                 return ret | RDMA_CORE_PORT_IBA_IB;
4706
4707         if (raw_support)
4708                 ret |= RDMA_CORE_PORT_RAW_PACKET;
4709
4710         if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP))
4711                 return ret;
4712
4713         if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP))
4714                 return ret;
4715
4716         if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP)
4717                 ret |= RDMA_CORE_PORT_IBA_ROCE;
4718
4719         if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP)
4720                 ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
4721
4722         return ret;
4723 }
4724
4725 static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
4726                                struct ib_port_immutable *immutable)
4727 {
4728         struct ib_port_attr attr;
4729         struct mlx5_ib_dev *dev = to_mdev(ibdev);
4730         enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num);
4731         struct mlx5_hca_vport_context rep = {0};
4732         int err;
4733
4734         err = ib_query_port(ibdev, port_num, &attr);
4735         if (err)
4736                 return err;
4737
4738         if (ll == IB_LINK_LAYER_INFINIBAND) {
4739                 err = mlx5_query_hca_vport_context(dev->mdev, 0, port_num, 0,
4740                                                    &rep);
4741                 if (err)
4742                         return err;
4743         }
4744
4745         immutable->pkey_tbl_len = attr.pkey_tbl_len;
4746         immutable->gid_tbl_len = attr.gid_tbl_len;
4747         immutable->core_cap_flags = get_core_cap_flags(ibdev, &rep);
4748         if ((ll == IB_LINK_LAYER_INFINIBAND) || MLX5_CAP_GEN(dev->mdev, roce))
4749                 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
4750
4751         return 0;
4752 }
4753
4754 static int mlx5_port_rep_immutable(struct ib_device *ibdev, u8 port_num,
4755                                    struct ib_port_immutable *immutable)
4756 {
4757         struct ib_port_attr attr;
4758         int err;
4759
4760         immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET;
4761
4762         err = ib_query_port(ibdev, port_num, &attr);
4763         if (err)
4764                 return err;
4765
4766         immutable->pkey_tbl_len = attr.pkey_tbl_len;
4767         immutable->gid_tbl_len = attr.gid_tbl_len;
4768         immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET;
4769
4770         return 0;
4771 }
4772
4773 static void get_dev_fw_str(struct ib_device *ibdev, char *str)
4774 {
4775         struct mlx5_ib_dev *dev =
4776                 container_of(ibdev, struct mlx5_ib_dev, ib_dev);
4777         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%04d",
4778                  fw_rev_maj(dev->mdev), fw_rev_min(dev->mdev),
4779                  fw_rev_sub(dev->mdev));
4780 }
4781
4782 static int mlx5_eth_lag_init(struct mlx5_ib_dev *dev)
4783 {
4784         struct mlx5_core_dev *mdev = dev->mdev;
4785         struct mlx5_flow_namespace *ns = mlx5_get_flow_namespace(mdev,
4786                                                                  MLX5_FLOW_NAMESPACE_LAG);
4787         struct mlx5_flow_table *ft;
4788         int err;
4789
4790         if (!ns || !mlx5_lag_is_active(mdev))
4791                 return 0;
4792
4793         err = mlx5_cmd_create_vport_lag(mdev);
4794         if (err)
4795                 return err;
4796
4797         ft = mlx5_create_lag_demux_flow_table(ns, 0, 0);
4798         if (IS_ERR(ft)) {
4799                 err = PTR_ERR(ft);
4800                 goto err_destroy_vport_lag;
4801         }
4802
4803         dev->flow_db->lag_demux_ft = ft;
4804         return 0;
4805
4806 err_destroy_vport_lag:
4807         mlx5_cmd_destroy_vport_lag(mdev);
4808         return err;
4809 }
4810
4811 static void mlx5_eth_lag_cleanup(struct mlx5_ib_dev *dev)
4812 {
4813         struct mlx5_core_dev *mdev = dev->mdev;
4814
4815         if (dev->flow_db->lag_demux_ft) {
4816                 mlx5_destroy_flow_table(dev->flow_db->lag_demux_ft);
4817                 dev->flow_db->lag_demux_ft = NULL;
4818
4819                 mlx5_cmd_destroy_vport_lag(mdev);
4820         }
4821 }
4822
4823 static int mlx5_add_netdev_notifier(struct mlx5_ib_dev *dev, u8 port_num)
4824 {
4825         int err;
4826
4827         dev->roce[port_num].nb.notifier_call = mlx5_netdev_event;
4828         err = register_netdevice_notifier(&dev->roce[port_num].nb);
4829         if (err) {
4830                 dev->roce[port_num].nb.notifier_call = NULL;
4831                 return err;
4832         }
4833
4834         return 0;
4835 }
4836
4837 static void mlx5_remove_netdev_notifier(struct mlx5_ib_dev *dev, u8 port_num)
4838 {
4839         if (dev->roce[port_num].nb.notifier_call) {
4840                 unregister_netdevice_notifier(&dev->roce[port_num].nb);
4841                 dev->roce[port_num].nb.notifier_call = NULL;
4842         }
4843 }
4844
4845 static int mlx5_enable_eth(struct mlx5_ib_dev *dev)
4846 {
4847         int err;
4848
4849         if (MLX5_CAP_GEN(dev->mdev, roce)) {
4850                 err = mlx5_nic_vport_enable_roce(dev->mdev);
4851                 if (err)
4852                         return err;
4853         }
4854
4855         err = mlx5_eth_lag_init(dev);
4856         if (err)
4857                 goto err_disable_roce;
4858
4859         return 0;
4860
4861 err_disable_roce:
4862         if (MLX5_CAP_GEN(dev->mdev, roce))
4863                 mlx5_nic_vport_disable_roce(dev->mdev);
4864
4865         return err;
4866 }
4867
4868 static void mlx5_disable_eth(struct mlx5_ib_dev *dev)
4869 {
4870         mlx5_eth_lag_cleanup(dev);
4871         if (MLX5_CAP_GEN(dev->mdev, roce))
4872                 mlx5_nic_vport_disable_roce(dev->mdev);
4873 }
4874
4875 struct mlx5_ib_counter {
4876         const char *name;
4877         size_t offset;
4878 };
4879
4880 #define INIT_Q_COUNTER(_name)           \
4881         { .name = #_name, .offset = MLX5_BYTE_OFF(query_q_counter_out, _name)}
4882
4883 static const struct mlx5_ib_counter basic_q_cnts[] = {
4884         INIT_Q_COUNTER(rx_write_requests),
4885         INIT_Q_COUNTER(rx_read_requests),
4886         INIT_Q_COUNTER(rx_atomic_requests),
4887         INIT_Q_COUNTER(out_of_buffer),
4888 };
4889
4890 static const struct mlx5_ib_counter out_of_seq_q_cnts[] = {
4891         INIT_Q_COUNTER(out_of_sequence),
4892 };
4893
4894 static const struct mlx5_ib_counter retrans_q_cnts[] = {
4895         INIT_Q_COUNTER(duplicate_request),
4896         INIT_Q_COUNTER(rnr_nak_retry_err),
4897         INIT_Q_COUNTER(packet_seq_err),
4898         INIT_Q_COUNTER(implied_nak_seq_err),
4899         INIT_Q_COUNTER(local_ack_timeout_err),
4900 };
4901
4902 #define INIT_CONG_COUNTER(_name)                \
4903         { .name = #_name, .offset =     \
4904                 MLX5_BYTE_OFF(query_cong_statistics_out, _name ## _high)}
4905
4906 static const struct mlx5_ib_counter cong_cnts[] = {
4907         INIT_CONG_COUNTER(rp_cnp_ignored),
4908         INIT_CONG_COUNTER(rp_cnp_handled),
4909         INIT_CONG_COUNTER(np_ecn_marked_roce_packets),
4910         INIT_CONG_COUNTER(np_cnp_sent),
4911 };
4912
4913 static const struct mlx5_ib_counter extended_err_cnts[] = {
4914         INIT_Q_COUNTER(resp_local_length_error),
4915         INIT_Q_COUNTER(resp_cqe_error),
4916         INIT_Q_COUNTER(req_cqe_error),
4917         INIT_Q_COUNTER(req_remote_invalid_request),
4918         INIT_Q_COUNTER(req_remote_access_errors),
4919         INIT_Q_COUNTER(resp_remote_access_errors),
4920         INIT_Q_COUNTER(resp_cqe_flush_error),
4921         INIT_Q_COUNTER(req_cqe_flush_error),
4922 };
4923
4924 #define INIT_EXT_PPCNT_COUNTER(_name)           \
4925         { .name = #_name, .offset =     \
4926         MLX5_BYTE_OFF(ppcnt_reg, \
4927                       counter_set.eth_extended_cntrs_grp_data_layout._name##_high)}
4928
4929 static const struct mlx5_ib_counter ext_ppcnt_cnts[] = {
4930         INIT_EXT_PPCNT_COUNTER(rx_icrc_encapsulated),
4931 };
4932
4933 static void mlx5_ib_dealloc_counters(struct mlx5_ib_dev *dev)
4934 {
4935         int i;
4936
4937         for (i = 0; i < dev->num_ports; i++) {
4938                 if (dev->port[i].cnts.set_id_valid)
4939                         mlx5_core_dealloc_q_counter(dev->mdev,
4940                                                     dev->port[i].cnts.set_id);
4941                 kfree(dev->port[i].cnts.names);
4942                 kfree(dev->port[i].cnts.offsets);
4943         }
4944 }
4945
4946 static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev,
4947                                     struct mlx5_ib_counters *cnts)
4948 {
4949         u32 num_counters;
4950
4951         num_counters = ARRAY_SIZE(basic_q_cnts);
4952
4953         if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt))
4954                 num_counters += ARRAY_SIZE(out_of_seq_q_cnts);
4955
4956         if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters))
4957                 num_counters += ARRAY_SIZE(retrans_q_cnts);
4958
4959         if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters))
4960                 num_counters += ARRAY_SIZE(extended_err_cnts);
4961
4962         cnts->num_q_counters = num_counters;
4963
4964         if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
4965                 cnts->num_cong_counters = ARRAY_SIZE(cong_cnts);
4966                 num_counters += ARRAY_SIZE(cong_cnts);
4967         }
4968         if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) {
4969                 cnts->num_ext_ppcnt_counters = ARRAY_SIZE(ext_ppcnt_cnts);
4970                 num_counters += ARRAY_SIZE(ext_ppcnt_cnts);
4971         }
4972         cnts->names = kcalloc(num_counters, sizeof(cnts->names), GFP_KERNEL);
4973         if (!cnts->names)
4974                 return -ENOMEM;
4975
4976         cnts->offsets = kcalloc(num_counters,
4977                                 sizeof(cnts->offsets), GFP_KERNEL);
4978         if (!cnts->offsets)
4979                 goto err_names;
4980
4981         return 0;
4982
4983 err_names:
4984         kfree(cnts->names);
4985         cnts->names = NULL;
4986         return -ENOMEM;
4987 }
4988
4989 static void mlx5_ib_fill_counters(struct mlx5_ib_dev *dev,
4990                                   const char **names,
4991                                   size_t *offsets)
4992 {
4993         int i;
4994         int j = 0;
4995
4996         for (i = 0; i < ARRAY_SIZE(basic_q_cnts); i++, j++) {
4997                 names[j] = basic_q_cnts[i].name;
4998                 offsets[j] = basic_q_cnts[i].offset;
4999         }
5000
5001         if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt)) {
5002                 for (i = 0; i < ARRAY_SIZE(out_of_seq_q_cnts); i++, j++) {
5003                         names[j] = out_of_seq_q_cnts[i].name;
5004                         offsets[j] = out_of_seq_q_cnts[i].offset;
5005                 }
5006         }
5007
5008         if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) {
5009                 for (i = 0; i < ARRAY_SIZE(retrans_q_cnts); i++, j++) {
5010                         names[j] = retrans_q_cnts[i].name;
5011                         offsets[j] = retrans_q_cnts[i].offset;
5012                 }
5013         }
5014
5015         if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters)) {
5016                 for (i = 0; i < ARRAY_SIZE(extended_err_cnts); i++, j++) {
5017                         names[j] = extended_err_cnts[i].name;
5018                         offsets[j] = extended_err_cnts[i].offset;
5019                 }
5020         }
5021
5022         if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
5023                 for (i = 0; i < ARRAY_SIZE(cong_cnts); i++, j++) {
5024                         names[j] = cong_cnts[i].name;
5025                         offsets[j] = cong_cnts[i].offset;
5026                 }
5027         }
5028
5029         if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) {
5030                 for (i = 0; i < ARRAY_SIZE(ext_ppcnt_cnts); i++, j++) {
5031                         names[j] = ext_ppcnt_cnts[i].name;
5032                         offsets[j] = ext_ppcnt_cnts[i].offset;
5033                 }
5034         }
5035 }
5036
5037 static int mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev)
5038 {
5039         int err = 0;
5040         int i;
5041
5042         for (i = 0; i < dev->num_ports; i++) {
5043                 err = __mlx5_ib_alloc_counters(dev, &dev->port[i].cnts);
5044                 if (err)
5045                         goto err_alloc;
5046
5047                 mlx5_ib_fill_counters(dev, dev->port[i].cnts.names,
5048                                       dev->port[i].cnts.offsets);
5049
5050                 err = mlx5_core_alloc_q_counter(dev->mdev,
5051                                                 &dev->port[i].cnts.set_id);
5052                 if (err) {
5053                         mlx5_ib_warn(dev,
5054                                      "couldn't allocate queue counter for port %d, err %d\n",
5055                                      i + 1, err);
5056                         goto err_alloc;
5057                 }
5058                 dev->port[i].cnts.set_id_valid = true;
5059         }
5060
5061         return 0;
5062
5063 err_alloc:
5064         mlx5_ib_dealloc_counters(dev);
5065         return err;
5066 }
5067
5068 static struct rdma_hw_stats *mlx5_ib_alloc_hw_stats(struct ib_device *ibdev,
5069                                                     u8 port_num)
5070 {
5071         struct mlx5_ib_dev *dev = to_mdev(ibdev);
5072         struct mlx5_ib_port *port = &dev->port[port_num - 1];
5073
5074         /* We support only per port stats */
5075         if (port_num == 0)
5076                 return NULL;
5077
5078         return rdma_alloc_hw_stats_struct(port->cnts.names,
5079                                           port->cnts.num_q_counters +
5080                                           port->cnts.num_cong_counters +
5081                                           port->cnts.num_ext_ppcnt_counters,
5082                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
5083 }
5084
5085 static int mlx5_ib_query_q_counters(struct mlx5_core_dev *mdev,
5086                                     struct mlx5_ib_port *port,
5087                                     struct rdma_hw_stats *stats)
5088 {
5089         int outlen = MLX5_ST_SZ_BYTES(query_q_counter_out);
5090         void *out;
5091         __be32 val;
5092         int ret, i;
5093
5094         out = kvzalloc(outlen, GFP_KERNEL);
5095         if (!out)
5096                 return -ENOMEM;
5097
5098         ret = mlx5_core_query_q_counter(mdev,
5099                                         port->cnts.set_id, 0,
5100                                         out, outlen);
5101         if (ret)
5102                 goto free;
5103
5104         for (i = 0; i < port->cnts.num_q_counters; i++) {
5105                 val = *(__be32 *)(out + port->cnts.offsets[i]);
5106                 stats->value[i] = (u64)be32_to_cpu(val);
5107         }
5108
5109 free:
5110         kvfree(out);
5111         return ret;
5112 }
5113
5114 static int mlx5_ib_query_ext_ppcnt_counters(struct mlx5_ib_dev *dev,
5115                                           struct mlx5_ib_port *port,
5116                                           struct rdma_hw_stats *stats)
5117 {
5118         int offset = port->cnts.num_q_counters + port->cnts.num_cong_counters;
5119         int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
5120         int ret, i;
5121         void *out;
5122
5123         out = kvzalloc(sz, GFP_KERNEL);
5124         if (!out)
5125                 return -ENOMEM;
5126
5127         ret = mlx5_cmd_query_ext_ppcnt_counters(dev->mdev, out);
5128         if (ret)
5129                 goto free;
5130
5131         for (i = 0; i < port->cnts.num_ext_ppcnt_counters; i++) {
5132                 stats->value[i + offset] =
5133                         be64_to_cpup((__be64 *)(out +
5134                                     port->cnts.offsets[i + offset]));
5135         }
5136
5137 free:
5138         kvfree(out);
5139         return ret;
5140 }
5141
5142 static int mlx5_ib_get_hw_stats(struct ib_device *ibdev,
5143                                 struct rdma_hw_stats *stats,
5144                                 u8 port_num, int index)
5145 {
5146         struct mlx5_ib_dev *dev = to_mdev(ibdev);
5147         struct mlx5_ib_port *port = &dev->port[port_num - 1];
5148         struct mlx5_core_dev *mdev;
5149         int ret, num_counters;
5150         u8 mdev_port_num;
5151
5152         if (!stats)
5153                 return -EINVAL;
5154
5155         num_counters = port->cnts.num_q_counters +
5156                        port->cnts.num_cong_counters +
5157                        port->cnts.num_ext_ppcnt_counters;
5158
5159         /* q_counters are per IB device, query the master mdev */
5160         ret = mlx5_ib_query_q_counters(dev->mdev, port, stats);
5161         if (ret)
5162                 return ret;
5163
5164         if (MLX5_CAP_PCAM_FEATURE(dev->mdev, rx_icrc_encapsulated_counter)) {
5165                 ret =  mlx5_ib_query_ext_ppcnt_counters(dev, port, stats);
5166                 if (ret)
5167                         return ret;
5168         }
5169
5170         if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
5171                 mdev = mlx5_ib_get_native_port_mdev(dev, port_num,
5172                                                     &mdev_port_num);
5173                 if (!mdev) {
5174                         /* If port is not affiliated yet, its in down state
5175                          * which doesn't have any counters yet, so it would be
5176                          * zero. So no need to read from the HCA.
5177                          */
5178                         goto done;
5179                 }
5180                 ret = mlx5_lag_query_cong_counters(dev->mdev,
5181                                                    stats->value +
5182                                                    port->cnts.num_q_counters,
5183                                                    port->cnts.num_cong_counters,
5184                                                    port->cnts.offsets +
5185                                                    port->cnts.num_q_counters);
5186
5187                 mlx5_ib_put_native_port_mdev(dev, port_num);
5188                 if (ret)
5189                         return ret;
5190         }
5191
5192 done:
5193         return num_counters;
5194 }
5195
5196 static int mlx5_ib_rn_get_params(struct ib_device *device, u8 port_num,
5197                                  enum rdma_netdev_t type,
5198                                  struct rdma_netdev_alloc_params *params)
5199 {
5200         if (type != RDMA_NETDEV_IPOIB)
5201                 return -EOPNOTSUPP;
5202
5203         return mlx5_rdma_rn_get_params(to_mdev(device)->mdev, device, params);
5204 }
5205
5206 static void delay_drop_debugfs_cleanup(struct mlx5_ib_dev *dev)
5207 {
5208         if (!dev->delay_drop.dbg)
5209                 return;
5210         debugfs_remove_recursive(dev->delay_drop.dbg->dir_debugfs);
5211         kfree(dev->delay_drop.dbg);
5212         dev->delay_drop.dbg = NULL;
5213 }
5214
5215 static void cancel_delay_drop(struct mlx5_ib_dev *dev)
5216 {
5217         if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP))
5218                 return;
5219
5220         cancel_work_sync(&dev->delay_drop.delay_drop_work);
5221         delay_drop_debugfs_cleanup(dev);
5222 }
5223
5224 static ssize_t delay_drop_timeout_read(struct file *filp, char __user *buf,
5225                                        size_t count, loff_t *pos)
5226 {
5227         struct mlx5_ib_delay_drop *delay_drop = filp->private_data;
5228         char lbuf[20];
5229         int len;
5230
5231         len = snprintf(lbuf, sizeof(lbuf), "%u\n", delay_drop->timeout);
5232         return simple_read_from_buffer(buf, count, pos, lbuf, len);
5233 }
5234
5235 static ssize_t delay_drop_timeout_write(struct file *filp, const char __user *buf,
5236                                         size_t count, loff_t *pos)
5237 {
5238         struct mlx5_ib_delay_drop *delay_drop = filp->private_data;
5239         u32 timeout;
5240         u32 var;
5241
5242         if (kstrtouint_from_user(buf, count, 0, &var))
5243                 return -EFAULT;
5244
5245         timeout = min_t(u32, roundup(var, 100), MLX5_MAX_DELAY_DROP_TIMEOUT_MS *
5246                         1000);
5247         if (timeout != var)
5248                 mlx5_ib_dbg(delay_drop->dev, "Round delay drop timeout to %u usec\n",
5249                             timeout);
5250
5251         delay_drop->timeout = timeout;
5252
5253         return count;
5254 }
5255
5256 static const struct file_operations fops_delay_drop_timeout = {
5257         .owner  = THIS_MODULE,
5258         .open   = simple_open,
5259         .write  = delay_drop_timeout_write,
5260         .read   = delay_drop_timeout_read,
5261 };
5262
5263 static int delay_drop_debugfs_init(struct mlx5_ib_dev *dev)
5264 {
5265         struct mlx5_ib_dbg_delay_drop *dbg;
5266
5267         if (!mlx5_debugfs_root)
5268                 return 0;
5269
5270         dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
5271         if (!dbg)
5272                 return -ENOMEM;
5273
5274         dev->delay_drop.dbg = dbg;
5275
5276         dbg->dir_debugfs =
5277                 debugfs_create_dir("delay_drop",
5278                                    dev->mdev->priv.dbg_root);
5279         if (!dbg->dir_debugfs)
5280                 goto out_debugfs;
5281
5282         dbg->events_cnt_debugfs =
5283                 debugfs_create_atomic_t("num_timeout_events", 0400,
5284                                         dbg->dir_debugfs,
5285                                         &dev->delay_drop.events_cnt);
5286         if (!dbg->events_cnt_debugfs)
5287                 goto out_debugfs;
5288
5289         dbg->rqs_cnt_debugfs =
5290                 debugfs_create_atomic_t("num_rqs", 0400,
5291                                         dbg->dir_debugfs,
5292                                         &dev->delay_drop.rqs_cnt);
5293         if (!dbg->rqs_cnt_debugfs)
5294                 goto out_debugfs;
5295
5296         dbg->timeout_debugfs =
5297                 debugfs_create_file("timeout", 0600,
5298                                     dbg->dir_debugfs,
5299                                     &dev->delay_drop,
5300                                     &fops_delay_drop_timeout);
5301         if (!dbg->timeout_debugfs)
5302                 goto out_debugfs;
5303
5304         return 0;
5305
5306 out_debugfs:
5307         delay_drop_debugfs_cleanup(dev);
5308         return -ENOMEM;
5309 }
5310
5311 static void init_delay_drop(struct mlx5_ib_dev *dev)
5312 {
5313         if (!(dev->ib_dev.attrs.raw_packet_caps & IB_RAW_PACKET_CAP_DELAY_DROP))
5314                 return;
5315
5316         mutex_init(&dev->delay_drop.lock);
5317         dev->delay_drop.dev = dev;
5318         dev->delay_drop.activate = false;
5319         dev->delay_drop.timeout = MLX5_MAX_DELAY_DROP_TIMEOUT_MS * 1000;
5320         INIT_WORK(&dev->delay_drop.delay_drop_work, delay_drop_handler);
5321         atomic_set(&dev->delay_drop.rqs_cnt, 0);
5322         atomic_set(&dev->delay_drop.events_cnt, 0);
5323
5324         if (delay_drop_debugfs_init(dev))
5325                 mlx5_ib_warn(dev, "Failed to init delay drop debugfs\n");
5326 }
5327
5328 static const struct cpumask *
5329 mlx5_ib_get_vector_affinity(struct ib_device *ibdev, int comp_vector)
5330 {
5331         struct mlx5_ib_dev *dev = to_mdev(ibdev);
5332
5333         return mlx5_get_vector_affinity_hint(dev->mdev, comp_vector);
5334 }
5335
5336 /* The mlx5_ib_multiport_mutex should be held when calling this function */
5337 static void mlx5_ib_unbind_slave_port(struct mlx5_ib_dev *ibdev,
5338                                       struct mlx5_ib_multiport_info *mpi)
5339 {
5340         u8 port_num = mlx5_core_native_port_num(mpi->mdev) - 1;
5341         struct mlx5_ib_port *port = &ibdev->port[port_num];
5342         int comps;
5343         int err;
5344         int i;
5345
5346         mlx5_ib_cleanup_cong_debugfs(ibdev, port_num);
5347
5348         spin_lock(&port->mp.mpi_lock);
5349         if (!mpi->ibdev) {
5350                 spin_unlock(&port->mp.mpi_lock);
5351                 return;
5352         }
5353         mpi->ibdev = NULL;
5354
5355         spin_unlock(&port->mp.mpi_lock);
5356         mlx5_remove_netdev_notifier(ibdev, port_num);
5357         spin_lock(&port->mp.mpi_lock);
5358
5359         comps = mpi->mdev_refcnt;
5360         if (comps) {
5361                 mpi->unaffiliate = true;
5362                 init_completion(&mpi->unref_comp);
5363                 spin_unlock(&port->mp.mpi_lock);
5364
5365                 for (i = 0; i < comps; i++)
5366                         wait_for_completion(&mpi->unref_comp);
5367
5368                 spin_lock(&port->mp.mpi_lock);
5369                 mpi->unaffiliate = false;
5370         }
5371
5372         port->mp.mpi = NULL;
5373
5374         list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list);
5375
5376         spin_unlock(&port->mp.mpi_lock);
5377
5378         err = mlx5_nic_vport_unaffiliate_multiport(mpi->mdev);
5379
5380         mlx5_ib_dbg(ibdev, "unaffiliated port %d\n", port_num + 1);
5381         /* Log an error, still needed to cleanup the pointers and add
5382          * it back to the list.
5383          */
5384         if (err)
5385                 mlx5_ib_err(ibdev, "Failed to unaffiliate port %u\n",
5386                             port_num + 1);
5387
5388         ibdev->roce[port_num].last_port_state = IB_PORT_DOWN;
5389 }
5390
5391 /* The mlx5_ib_multiport_mutex should be held when calling this function */
5392 static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev,
5393                                     struct mlx5_ib_multiport_info *mpi)
5394 {
5395         u8 port_num = mlx5_core_native_port_num(mpi->mdev) - 1;
5396         int err;
5397
5398         spin_lock(&ibdev->port[port_num].mp.mpi_lock);
5399         if (ibdev->port[port_num].mp.mpi) {
5400                 mlx5_ib_dbg(ibdev, "port %d already affiliated.\n",
5401                             port_num + 1);
5402                 spin_unlock(&ibdev->port[port_num].mp.mpi_lock);
5403                 return false;
5404         }
5405
5406         ibdev->port[port_num].mp.mpi = mpi;
5407         mpi->ibdev = ibdev;
5408         spin_unlock(&ibdev->port[port_num].mp.mpi_lock);
5409
5410         err = mlx5_nic_vport_affiliate_multiport(ibdev->mdev, mpi->mdev);
5411         if (err)
5412                 goto unbind;
5413
5414         err = get_port_caps(ibdev, mlx5_core_native_port_num(mpi->mdev));
5415         if (err)
5416                 goto unbind;
5417
5418         err = mlx5_add_netdev_notifier(ibdev, port_num);
5419         if (err) {
5420                 mlx5_ib_err(ibdev, "failed adding netdev notifier for port %u\n",
5421                             port_num + 1);
5422                 goto unbind;
5423         }
5424
5425         err = mlx5_ib_init_cong_debugfs(ibdev, port_num);
5426         if (err)
5427                 goto unbind;
5428
5429         return true;
5430
5431 unbind:
5432         mlx5_ib_unbind_slave_port(ibdev, mpi);
5433         return false;
5434 }
5435
5436 static int mlx5_ib_init_multiport_master(struct mlx5_ib_dev *dev)
5437 {
5438         int port_num = mlx5_core_native_port_num(dev->mdev) - 1;
5439         enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev,
5440                                                           port_num + 1);
5441         struct mlx5_ib_multiport_info *mpi;
5442         int err;
5443         int i;
5444
5445         if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
5446                 return 0;
5447
5448         err = mlx5_query_nic_vport_system_image_guid(dev->mdev,
5449                                                      &dev->sys_image_guid);
5450         if (err)
5451                 return err;
5452
5453         err = mlx5_nic_vport_enable_roce(dev->mdev);
5454         if (err)
5455                 return err;
5456
5457         mutex_lock(&mlx5_ib_multiport_mutex);
5458         for (i = 0; i < dev->num_ports; i++) {
5459                 bool bound = false;
5460
5461                 /* build a stub multiport info struct for the native port. */
5462                 if (i == port_num) {
5463                         mpi = kzalloc(sizeof(*mpi), GFP_KERNEL);
5464                         if (!mpi) {
5465                                 mutex_unlock(&mlx5_ib_multiport_mutex);
5466                                 mlx5_nic_vport_disable_roce(dev->mdev);
5467                                 return -ENOMEM;
5468                         }
5469
5470                         mpi->is_master = true;
5471                         mpi->mdev = dev->mdev;
5472                         mpi->sys_image_guid = dev->sys_image_guid;
5473                         dev->port[i].mp.mpi = mpi;
5474                         mpi->ibdev = dev;
5475                         mpi = NULL;
5476                         continue;
5477                 }
5478
5479                 list_for_each_entry(mpi, &mlx5_ib_unaffiliated_port_list,
5480                                     list) {
5481                         if (dev->sys_image_guid == mpi->sys_image_guid &&
5482                             (mlx5_core_native_port_num(mpi->mdev) - 1) == i) {
5483                                 bound = mlx5_ib_bind_slave_port(dev, mpi);
5484                         }
5485
5486                         if (bound) {
5487                                 dev_dbg(&mpi->mdev->pdev->dev, "removing port from unaffiliated list.\n");
5488                                 mlx5_ib_dbg(dev, "port %d bound\n", i + 1);
5489                                 list_del(&mpi->list);
5490                                 break;
5491                         }
5492                 }
5493                 if (!bound) {
5494                         get_port_caps(dev, i + 1);
5495                         mlx5_ib_dbg(dev, "no free port found for port %d\n",
5496                                     i + 1);
5497                 }
5498         }
5499
5500         list_add_tail(&dev->ib_dev_list, &mlx5_ib_dev_list);
5501         mutex_unlock(&mlx5_ib_multiport_mutex);
5502         return err;
5503 }
5504
5505 static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev)
5506 {
5507         int port_num = mlx5_core_native_port_num(dev->mdev) - 1;
5508         enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev,
5509                                                           port_num + 1);
5510         int i;
5511
5512         if (!mlx5_core_is_mp_master(dev->mdev) || ll != IB_LINK_LAYER_ETHERNET)
5513                 return;
5514
5515         mutex_lock(&mlx5_ib_multiport_mutex);
5516         for (i = 0; i < dev->num_ports; i++) {
5517                 if (dev->port[i].mp.mpi) {
5518                         /* Destroy the native port stub */
5519                         if (i == port_num) {
5520                                 kfree(dev->port[i].mp.mpi);
5521                                 dev->port[i].mp.mpi = NULL;
5522                         } else {
5523                                 mlx5_ib_dbg(dev, "unbinding port_num: %d\n", i + 1);
5524                                 mlx5_ib_unbind_slave_port(dev, dev->port[i].mp.mpi);
5525                         }
5526                 }
5527         }
5528
5529         mlx5_ib_dbg(dev, "removing from devlist\n");
5530         list_del(&dev->ib_dev_list);
5531         mutex_unlock(&mlx5_ib_multiport_mutex);
5532
5533         mlx5_nic_vport_disable_roce(dev->mdev);
5534 }
5535
5536 ADD_UVERBS_ATTRIBUTES_SIMPLE(
5537         mlx5_ib_dm,
5538         UVERBS_OBJECT_DM,
5539         UVERBS_METHOD_DM_ALLOC,
5540         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET,
5541                             UVERBS_ATTR_TYPE(u64),
5542                             UA_MANDATORY),
5543         UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX,
5544                             UVERBS_ATTR_TYPE(u16),
5545                             UA_MANDATORY));
5546
5547 ADD_UVERBS_ATTRIBUTES_SIMPLE(
5548         mlx5_ib_flow_action,
5549         UVERBS_OBJECT_FLOW_ACTION,
5550         UVERBS_METHOD_FLOW_ACTION_ESP_CREATE,
5551         UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_ACTION_FLAGS,
5552                              enum mlx5_ib_uapi_flow_action_flags));
5553
5554 static int populate_specs_root(struct mlx5_ib_dev *dev)
5555 {
5556         const struct uverbs_object_tree_def **trees = dev->driver_trees;
5557         size_t num_trees = 0;
5558
5559         if (mlx5_accel_ipsec_device_caps(dev->mdev) &
5560             MLX5_ACCEL_IPSEC_CAP_DEVICE)
5561                 trees[num_trees++] = &mlx5_ib_flow_action;
5562
5563         if (MLX5_CAP_DEV_MEM(dev->mdev, memic))
5564                 trees[num_trees++] = &mlx5_ib_dm;
5565
5566         if (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) &
5567             MLX5_GENERAL_OBJ_TYPES_CAP_UCTX)
5568                 trees[num_trees++] = mlx5_ib_get_devx_tree();
5569
5570         num_trees += mlx5_ib_get_flow_trees(trees + num_trees);
5571
5572         WARN_ON(num_trees >= ARRAY_SIZE(dev->driver_trees));
5573         trees[num_trees] = NULL;
5574         dev->ib_dev.driver_specs = trees;
5575
5576         return 0;
5577 }
5578
5579 static int mlx5_ib_read_counters(struct ib_counters *counters,
5580                                  struct ib_counters_read_attr *read_attr,
5581                                  struct uverbs_attr_bundle *attrs)
5582 {
5583         struct mlx5_ib_mcounters *mcounters = to_mcounters(counters);
5584         struct mlx5_read_counters_attr mread_attr = {};
5585         struct mlx5_ib_flow_counters_desc *desc;
5586         int ret, i;
5587
5588         mutex_lock(&mcounters->mcntrs_mutex);
5589         if (mcounters->cntrs_max_index > read_attr->ncounters) {
5590                 ret = -EINVAL;
5591                 goto err_bound;
5592         }
5593
5594         mread_attr.out = kcalloc(mcounters->counters_num, sizeof(u64),
5595                                  GFP_KERNEL);
5596         if (!mread_attr.out) {
5597                 ret = -ENOMEM;
5598                 goto err_bound;
5599         }
5600
5601         mread_attr.hw_cntrs_hndl = mcounters->hw_cntrs_hndl;
5602         mread_attr.flags = read_attr->flags;
5603         ret = mcounters->read_counters(counters->device, &mread_attr);
5604         if (ret)
5605                 goto err_read;
5606
5607         /* do the pass over the counters data array to assign according to the
5608          * descriptions and indexing pairs
5609          */
5610         desc = mcounters->counters_data;
5611         for (i = 0; i < mcounters->ncounters; i++)
5612                 read_attr->counters_buff[desc[i].index] += mread_attr.out[desc[i].description];
5613
5614 err_read:
5615         kfree(mread_attr.out);
5616 err_bound:
5617         mutex_unlock(&mcounters->mcntrs_mutex);
5618         return ret;
5619 }
5620
5621 static int mlx5_ib_destroy_counters(struct ib_counters *counters)
5622 {
5623         struct mlx5_ib_mcounters *mcounters = to_mcounters(counters);
5624
5625         counters_clear_description(counters);
5626         if (mcounters->hw_cntrs_hndl)
5627                 mlx5_fc_destroy(to_mdev(counters->device)->mdev,
5628                                 mcounters->hw_cntrs_hndl);
5629
5630         kfree(mcounters);
5631
5632         return 0;
5633 }
5634
5635 static struct ib_counters *mlx5_ib_create_counters(struct ib_device *device,
5636                                                    struct uverbs_attr_bundle *attrs)
5637 {
5638         struct mlx5_ib_mcounters *mcounters;
5639
5640         mcounters = kzalloc(sizeof(*mcounters), GFP_KERNEL);
5641         if (!mcounters)
5642                 return ERR_PTR(-ENOMEM);
5643
5644         mutex_init(&mcounters->mcntrs_mutex);
5645
5646         return &mcounters->ibcntrs;
5647 }
5648
5649 void mlx5_ib_stage_init_cleanup(struct mlx5_ib_dev *dev)
5650 {
5651         mlx5_ib_cleanup_multiport_master(dev);
5652 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
5653         cleanup_srcu_struct(&dev->mr_srcu);
5654 #endif
5655         kfree(dev->port);
5656 }
5657
5658 int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
5659 {
5660         struct mlx5_core_dev *mdev = dev->mdev;
5661         int err;
5662         int i;
5663
5664         dev->port = kcalloc(dev->num_ports, sizeof(*dev->port),
5665                             GFP_KERNEL);
5666         if (!dev->port)
5667                 return -ENOMEM;
5668
5669         for (i = 0; i < dev->num_ports; i++) {
5670                 spin_lock_init(&dev->port[i].mp.mpi_lock);
5671                 rwlock_init(&dev->roce[i].netdev_lock);
5672         }
5673
5674         err = mlx5_ib_init_multiport_master(dev);
5675         if (err)
5676                 goto err_free_port;
5677
5678         if (!mlx5_core_mp_enabled(mdev)) {
5679                 for (i = 1; i <= dev->num_ports; i++) {
5680                         err = get_port_caps(dev, i);
5681                         if (err)
5682                                 break;
5683                 }
5684         } else {
5685                 err = get_port_caps(dev, mlx5_core_native_port_num(mdev));
5686         }
5687         if (err)
5688                 goto err_mp;
5689
5690         if (mlx5_use_mad_ifc(dev))
5691                 get_ext_port_caps(dev);
5692
5693         dev->ib_dev.owner               = THIS_MODULE;
5694         dev->ib_dev.node_type           = RDMA_NODE_IB_CA;
5695         dev->ib_dev.local_dma_lkey      = 0 /* not supported for now */;
5696         dev->ib_dev.phys_port_cnt       = dev->num_ports;
5697         dev->ib_dev.num_comp_vectors    =
5698                 dev->mdev->priv.eq_table.num_comp_vectors;
5699         dev->ib_dev.dev.parent          = &mdev->pdev->dev;
5700
5701         mutex_init(&dev->cap_mask_mutex);
5702         INIT_LIST_HEAD(&dev->qp_list);
5703         spin_lock_init(&dev->reset_flow_resource_lock);
5704
5705         spin_lock_init(&dev->memic.memic_lock);
5706         dev->memic.dev = mdev;
5707
5708 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
5709         err = init_srcu_struct(&dev->mr_srcu);
5710         if (err)
5711                 goto err_free_port;
5712 #endif
5713
5714         return 0;
5715 err_mp:
5716         mlx5_ib_cleanup_multiport_master(dev);
5717
5718 err_free_port:
5719         kfree(dev->port);
5720
5721         return -ENOMEM;
5722 }
5723
5724 static int mlx5_ib_stage_flow_db_init(struct mlx5_ib_dev *dev)
5725 {
5726         dev->flow_db = kzalloc(sizeof(*dev->flow_db), GFP_KERNEL);
5727
5728         if (!dev->flow_db)
5729                 return -ENOMEM;
5730
5731         mutex_init(&dev->flow_db->lock);
5732
5733         return 0;
5734 }
5735
5736 int mlx5_ib_stage_rep_flow_db_init(struct mlx5_ib_dev *dev)
5737 {
5738         struct mlx5_ib_dev *nic_dev;
5739
5740         nic_dev = mlx5_ib_get_uplink_ibdev(dev->mdev->priv.eswitch);
5741
5742         if (!nic_dev)
5743                 return -EINVAL;
5744
5745         dev->flow_db = nic_dev->flow_db;
5746
5747         return 0;
5748 }
5749
5750 static void mlx5_ib_stage_flow_db_cleanup(struct mlx5_ib_dev *dev)
5751 {
5752         kfree(dev->flow_db);
5753 }
5754
5755 int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
5756 {
5757         struct mlx5_core_dev *mdev = dev->mdev;
5758         int err;
5759
5760         dev->ib_dev.uverbs_abi_ver      = MLX5_IB_UVERBS_ABI_VERSION;
5761         dev->ib_dev.uverbs_cmd_mask     =
5762                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
5763                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
5764                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
5765                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
5766                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
5767                 (1ull << IB_USER_VERBS_CMD_CREATE_AH)           |
5768                 (1ull << IB_USER_VERBS_CMD_DESTROY_AH)          |
5769                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
5770                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
5771                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
5772                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
5773                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
5774                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
5775                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
5776                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
5777                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
5778                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
5779                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
5780                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
5781                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
5782                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
5783                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
5784                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
5785                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
5786                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
5787                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
5788         dev->ib_dev.uverbs_ex_cmd_mask =
5789                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE)     |
5790                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ)        |
5791                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP)        |
5792                 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_QP)        |
5793                 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ);
5794
5795         dev->ib_dev.query_device        = mlx5_ib_query_device;
5796         dev->ib_dev.get_link_layer      = mlx5_ib_port_link_layer;
5797         dev->ib_dev.query_gid           = mlx5_ib_query_gid;
5798         dev->ib_dev.add_gid             = mlx5_ib_add_gid;
5799         dev->ib_dev.del_gid             = mlx5_ib_del_gid;
5800         dev->ib_dev.query_pkey          = mlx5_ib_query_pkey;
5801         dev->ib_dev.modify_device       = mlx5_ib_modify_device;
5802         dev->ib_dev.modify_port         = mlx5_ib_modify_port;
5803         dev->ib_dev.alloc_ucontext      = mlx5_ib_alloc_ucontext;
5804         dev->ib_dev.dealloc_ucontext    = mlx5_ib_dealloc_ucontext;
5805         dev->ib_dev.mmap                = mlx5_ib_mmap;
5806         dev->ib_dev.alloc_pd            = mlx5_ib_alloc_pd;
5807         dev->ib_dev.dealloc_pd          = mlx5_ib_dealloc_pd;
5808         dev->ib_dev.create_ah           = mlx5_ib_create_ah;
5809         dev->ib_dev.query_ah            = mlx5_ib_query_ah;
5810         dev->ib_dev.destroy_ah          = mlx5_ib_destroy_ah;
5811         dev->ib_dev.create_srq          = mlx5_ib_create_srq;
5812         dev->ib_dev.modify_srq          = mlx5_ib_modify_srq;
5813         dev->ib_dev.query_srq           = mlx5_ib_query_srq;
5814         dev->ib_dev.destroy_srq         = mlx5_ib_destroy_srq;
5815         dev->ib_dev.post_srq_recv       = mlx5_ib_post_srq_recv;
5816         dev->ib_dev.create_qp           = mlx5_ib_create_qp;
5817         dev->ib_dev.modify_qp           = mlx5_ib_modify_qp;
5818         dev->ib_dev.query_qp            = mlx5_ib_query_qp;
5819         dev->ib_dev.destroy_qp          = mlx5_ib_destroy_qp;
5820         dev->ib_dev.drain_sq            = mlx5_ib_drain_sq;
5821         dev->ib_dev.drain_rq            = mlx5_ib_drain_rq;
5822         dev->ib_dev.post_send           = mlx5_ib_post_send;
5823         dev->ib_dev.post_recv           = mlx5_ib_post_recv;
5824         dev->ib_dev.create_cq           = mlx5_ib_create_cq;
5825         dev->ib_dev.modify_cq           = mlx5_ib_modify_cq;
5826         dev->ib_dev.resize_cq           = mlx5_ib_resize_cq;
5827         dev->ib_dev.destroy_cq          = mlx5_ib_destroy_cq;
5828         dev->ib_dev.poll_cq             = mlx5_ib_poll_cq;
5829         dev->ib_dev.req_notify_cq       = mlx5_ib_arm_cq;
5830         dev->ib_dev.get_dma_mr          = mlx5_ib_get_dma_mr;
5831         dev->ib_dev.reg_user_mr         = mlx5_ib_reg_user_mr;
5832         dev->ib_dev.rereg_user_mr       = mlx5_ib_rereg_user_mr;
5833         dev->ib_dev.dereg_mr            = mlx5_ib_dereg_mr;
5834         dev->ib_dev.attach_mcast        = mlx5_ib_mcg_attach;
5835         dev->ib_dev.detach_mcast        = mlx5_ib_mcg_detach;
5836         dev->ib_dev.process_mad         = mlx5_ib_process_mad;
5837         dev->ib_dev.alloc_mr            = mlx5_ib_alloc_mr;
5838         dev->ib_dev.map_mr_sg           = mlx5_ib_map_mr_sg;
5839         dev->ib_dev.check_mr_status     = mlx5_ib_check_mr_status;
5840         dev->ib_dev.get_dev_fw_str      = get_dev_fw_str;
5841         dev->ib_dev.get_vector_affinity = mlx5_ib_get_vector_affinity;
5842         if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
5843             IS_ENABLED(CONFIG_MLX5_CORE_IPOIB))
5844                 dev->ib_dev.rdma_netdev_get_params = mlx5_ib_rn_get_params;
5845
5846         if (mlx5_core_is_pf(mdev)) {
5847                 dev->ib_dev.get_vf_config       = mlx5_ib_get_vf_config;
5848                 dev->ib_dev.set_vf_link_state   = mlx5_ib_set_vf_link_state;
5849                 dev->ib_dev.get_vf_stats        = mlx5_ib_get_vf_stats;
5850                 dev->ib_dev.set_vf_guid         = mlx5_ib_set_vf_guid;
5851         }
5852
5853         dev->ib_dev.disassociate_ucontext = mlx5_ib_disassociate_ucontext;
5854
5855         dev->umr_fence = mlx5_get_umr_fence(MLX5_CAP_GEN(mdev, umr_fence));
5856
5857         if (MLX5_CAP_GEN(mdev, imaicl)) {
5858                 dev->ib_dev.alloc_mw            = mlx5_ib_alloc_mw;
5859                 dev->ib_dev.dealloc_mw          = mlx5_ib_dealloc_mw;
5860                 dev->ib_dev.uverbs_cmd_mask |=
5861                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW)    |
5862                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
5863         }
5864
5865         if (MLX5_CAP_GEN(mdev, xrc)) {
5866                 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
5867                 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
5868                 dev->ib_dev.uverbs_cmd_mask |=
5869                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
5870                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
5871         }
5872
5873         if (MLX5_CAP_DEV_MEM(mdev, memic)) {
5874                 dev->ib_dev.alloc_dm = mlx5_ib_alloc_dm;
5875                 dev->ib_dev.dealloc_dm = mlx5_ib_dealloc_dm;
5876                 dev->ib_dev.reg_dm_mr = mlx5_ib_reg_dm_mr;
5877         }
5878
5879         dev->ib_dev.create_flow = mlx5_ib_create_flow;
5880         dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow;
5881         dev->ib_dev.uverbs_ex_cmd_mask |=
5882                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
5883                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
5884         dev->ib_dev.create_flow_action_esp = mlx5_ib_create_flow_action_esp;
5885         dev->ib_dev.destroy_flow_action = mlx5_ib_destroy_flow_action;
5886         dev->ib_dev.modify_flow_action_esp = mlx5_ib_modify_flow_action_esp;
5887         dev->ib_dev.driver_id = RDMA_DRIVER_MLX5;
5888         dev->ib_dev.create_counters = mlx5_ib_create_counters;
5889         dev->ib_dev.destroy_counters = mlx5_ib_destroy_counters;
5890         dev->ib_dev.read_counters = mlx5_ib_read_counters;
5891
5892         err = init_node_data(dev);
5893         if (err)
5894                 return err;
5895
5896         if ((MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) &&
5897             (MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) ||
5898              MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
5899                 mutex_init(&dev->lb.mutex);
5900
5901         return 0;
5902 }
5903
5904 static int mlx5_ib_stage_non_default_cb(struct mlx5_ib_dev *dev)
5905 {
5906         dev->ib_dev.get_port_immutable  = mlx5_port_immutable;
5907         dev->ib_dev.query_port          = mlx5_ib_query_port;
5908
5909         return 0;
5910 }
5911
5912 int mlx5_ib_stage_rep_non_default_cb(struct mlx5_ib_dev *dev)
5913 {
5914         dev->ib_dev.get_port_immutable  = mlx5_port_rep_immutable;
5915         dev->ib_dev.query_port          = mlx5_ib_rep_query_port;
5916
5917         return 0;
5918 }
5919
5920 static int mlx5_ib_stage_common_roce_init(struct mlx5_ib_dev *dev)
5921 {
5922         u8 port_num;
5923         int i;
5924
5925         for (i = 0; i < dev->num_ports; i++) {
5926                 dev->roce[i].dev = dev;
5927                 dev->roce[i].native_port_num = i + 1;
5928                 dev->roce[i].last_port_state = IB_PORT_DOWN;
5929         }
5930
5931         dev->ib_dev.get_netdev  = mlx5_ib_get_netdev;
5932         dev->ib_dev.create_wq    = mlx5_ib_create_wq;
5933         dev->ib_dev.modify_wq    = mlx5_ib_modify_wq;
5934         dev->ib_dev.destroy_wq   = mlx5_ib_destroy_wq;
5935         dev->ib_dev.create_rwq_ind_table = mlx5_ib_create_rwq_ind_table;
5936         dev->ib_dev.destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table;
5937
5938         dev->ib_dev.uverbs_ex_cmd_mask |=
5939                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) |
5940                         (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) |
5941                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) |
5942                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
5943                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
5944
5945         port_num = mlx5_core_native_port_num(dev->mdev) - 1;
5946
5947         return mlx5_add_netdev_notifier(dev, port_num);
5948 }
5949
5950 static void mlx5_ib_stage_common_roce_cleanup(struct mlx5_ib_dev *dev)
5951 {
5952         u8 port_num = mlx5_core_native_port_num(dev->mdev) - 1;
5953
5954         mlx5_remove_netdev_notifier(dev, port_num);
5955 }
5956
5957 int mlx5_ib_stage_rep_roce_init(struct mlx5_ib_dev *dev)
5958 {
5959         struct mlx5_core_dev *mdev = dev->mdev;
5960         enum rdma_link_layer ll;
5961         int port_type_cap;
5962         int err = 0;
5963
5964         port_type_cap = MLX5_CAP_GEN(mdev, port_type);
5965         ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
5966
5967         if (ll == IB_LINK_LAYER_ETHERNET)
5968                 err = mlx5_ib_stage_common_roce_init(dev);
5969
5970         return err;
5971 }
5972
5973 void mlx5_ib_stage_rep_roce_cleanup(struct mlx5_ib_dev *dev)
5974 {
5975         mlx5_ib_stage_common_roce_cleanup(dev);
5976 }
5977
5978 static int mlx5_ib_stage_roce_init(struct mlx5_ib_dev *dev)
5979 {
5980         struct mlx5_core_dev *mdev = dev->mdev;
5981         enum rdma_link_layer ll;
5982         int port_type_cap;
5983         int err;
5984
5985         port_type_cap = MLX5_CAP_GEN(mdev, port_type);
5986         ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
5987
5988         if (ll == IB_LINK_LAYER_ETHERNET) {
5989                 err = mlx5_ib_stage_common_roce_init(dev);
5990                 if (err)
5991                         return err;
5992
5993                 err = mlx5_enable_eth(dev);
5994                 if (err)
5995                         goto cleanup;
5996         }
5997
5998         return 0;
5999 cleanup:
6000         mlx5_ib_stage_common_roce_cleanup(dev);
6001
6002         return err;
6003 }
6004
6005 static void mlx5_ib_stage_roce_cleanup(struct mlx5_ib_dev *dev)
6006 {
6007         struct mlx5_core_dev *mdev = dev->mdev;
6008         enum rdma_link_layer ll;
6009         int port_type_cap;
6010
6011         port_type_cap = MLX5_CAP_GEN(mdev, port_type);
6012         ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
6013
6014         if (ll == IB_LINK_LAYER_ETHERNET) {
6015                 mlx5_disable_eth(dev);
6016                 mlx5_ib_stage_common_roce_cleanup(dev);
6017         }
6018 }
6019
6020 int mlx5_ib_stage_dev_res_init(struct mlx5_ib_dev *dev)
6021 {
6022         return create_dev_resources(&dev->devr);
6023 }
6024
6025 void mlx5_ib_stage_dev_res_cleanup(struct mlx5_ib_dev *dev)
6026 {
6027         destroy_dev_resources(&dev->devr);
6028 }
6029
6030 static int mlx5_ib_stage_odp_init(struct mlx5_ib_dev *dev)
6031 {
6032         mlx5_ib_internal_fill_odp_caps(dev);
6033
6034         return mlx5_ib_odp_init_one(dev);
6035 }
6036
6037 int mlx5_ib_stage_counters_init(struct mlx5_ib_dev *dev)
6038 {
6039         if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) {
6040                 dev->ib_dev.get_hw_stats        = mlx5_ib_get_hw_stats;
6041                 dev->ib_dev.alloc_hw_stats      = mlx5_ib_alloc_hw_stats;
6042
6043                 return mlx5_ib_alloc_counters(dev);
6044         }
6045
6046         return 0;
6047 }
6048
6049 void mlx5_ib_stage_counters_cleanup(struct mlx5_ib_dev *dev)
6050 {
6051         if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt))
6052                 mlx5_ib_dealloc_counters(dev);
6053 }
6054
6055 static int mlx5_ib_stage_cong_debugfs_init(struct mlx5_ib_dev *dev)
6056 {
6057         return mlx5_ib_init_cong_debugfs(dev,
6058                                          mlx5_core_native_port_num(dev->mdev) - 1);
6059 }
6060
6061 static void mlx5_ib_stage_cong_debugfs_cleanup(struct mlx5_ib_dev *dev)
6062 {
6063         mlx5_ib_cleanup_cong_debugfs(dev,
6064                                      mlx5_core_native_port_num(dev->mdev) - 1);
6065 }
6066
6067 static int mlx5_ib_stage_uar_init(struct mlx5_ib_dev *dev)
6068 {
6069         dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev);
6070         return PTR_ERR_OR_ZERO(dev->mdev->priv.uar);
6071 }
6072
6073 static void mlx5_ib_stage_uar_cleanup(struct mlx5_ib_dev *dev)
6074 {
6075         mlx5_put_uars_page(dev->mdev, dev->mdev->priv.uar);
6076 }
6077
6078 int mlx5_ib_stage_bfrag_init(struct mlx5_ib_dev *dev)
6079 {
6080         int err;
6081
6082         err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false);
6083         if (err)
6084                 return err;
6085
6086         err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true);
6087         if (err)
6088                 mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
6089
6090         return err;
6091 }
6092
6093 void mlx5_ib_stage_bfrag_cleanup(struct mlx5_ib_dev *dev)
6094 {
6095         mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
6096         mlx5_free_bfreg(dev->mdev, &dev->bfreg);
6097 }
6098
6099 static int mlx5_ib_stage_populate_specs(struct mlx5_ib_dev *dev)
6100 {
6101         return populate_specs_root(dev);
6102 }
6103
6104 int mlx5_ib_stage_ib_reg_init(struct mlx5_ib_dev *dev)
6105 {
6106         const char *name;
6107
6108         rdma_set_device_sysfs_group(&dev->ib_dev, &mlx5_attr_group);
6109         if (!mlx5_lag_is_active(dev->mdev))
6110                 name = "mlx5_%d";
6111         else
6112                 name = "mlx5_bond_%d";
6113         return ib_register_device(&dev->ib_dev, name, NULL);
6114 }
6115
6116 void mlx5_ib_stage_pre_ib_reg_umr_cleanup(struct mlx5_ib_dev *dev)
6117 {
6118         destroy_umrc_res(dev);
6119 }
6120
6121 void mlx5_ib_stage_ib_reg_cleanup(struct mlx5_ib_dev *dev)
6122 {
6123         ib_unregister_device(&dev->ib_dev);
6124 }
6125
6126 int mlx5_ib_stage_post_ib_reg_umr_init(struct mlx5_ib_dev *dev)
6127 {
6128         return create_umr_res(dev);
6129 }
6130
6131 static int mlx5_ib_stage_delay_drop_init(struct mlx5_ib_dev *dev)
6132 {
6133         init_delay_drop(dev);
6134
6135         return 0;
6136 }
6137
6138 static void mlx5_ib_stage_delay_drop_cleanup(struct mlx5_ib_dev *dev)
6139 {
6140         cancel_delay_drop(dev);
6141 }
6142
6143 static int mlx5_ib_stage_rep_reg_init(struct mlx5_ib_dev *dev)
6144 {
6145         mlx5_ib_register_vport_reps(dev);
6146
6147         return 0;
6148 }
6149
6150 static void mlx5_ib_stage_rep_reg_cleanup(struct mlx5_ib_dev *dev)
6151 {
6152         mlx5_ib_unregister_vport_reps(dev);
6153 }
6154
6155 void __mlx5_ib_remove(struct mlx5_ib_dev *dev,
6156                       const struct mlx5_ib_profile *profile,
6157                       int stage)
6158 {
6159         /* Number of stages to cleanup */
6160         while (stage) {
6161                 stage--;
6162                 if (profile->stage[stage].cleanup)
6163                         profile->stage[stage].cleanup(dev);
6164         }
6165
6166         if (dev->devx_whitelist_uid)
6167                 mlx5_ib_devx_destroy(dev, dev->devx_whitelist_uid);
6168         ib_dealloc_device((struct ib_device *)dev);
6169 }
6170
6171 void *__mlx5_ib_add(struct mlx5_ib_dev *dev,
6172                     const struct mlx5_ib_profile *profile)
6173 {
6174         int err;
6175         int i;
6176         int uid;
6177
6178         for (i = 0; i < MLX5_IB_STAGE_MAX; i++) {
6179                 if (profile->stage[i].init) {
6180                         err = profile->stage[i].init(dev);
6181                         if (err)
6182                                 goto err_out;
6183                 }
6184         }
6185
6186         uid = mlx5_ib_devx_create(dev);
6187         if (uid > 0)
6188                 dev->devx_whitelist_uid = uid;
6189
6190         dev->profile = profile;
6191         dev->ib_active = true;
6192
6193         return dev;
6194
6195 err_out:
6196         __mlx5_ib_remove(dev, profile, i);
6197
6198         return NULL;
6199 }
6200
6201 static const struct mlx5_ib_profile pf_profile = {
6202         STAGE_CREATE(MLX5_IB_STAGE_INIT,
6203                      mlx5_ib_stage_init_init,
6204                      mlx5_ib_stage_init_cleanup),
6205         STAGE_CREATE(MLX5_IB_STAGE_FLOW_DB,
6206                      mlx5_ib_stage_flow_db_init,
6207                      mlx5_ib_stage_flow_db_cleanup),
6208         STAGE_CREATE(MLX5_IB_STAGE_CAPS,
6209                      mlx5_ib_stage_caps_init,
6210                      NULL),
6211         STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB,
6212                      mlx5_ib_stage_non_default_cb,
6213                      NULL),
6214         STAGE_CREATE(MLX5_IB_STAGE_ROCE,
6215                      mlx5_ib_stage_roce_init,
6216                      mlx5_ib_stage_roce_cleanup),
6217         STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES,
6218                      mlx5_ib_stage_dev_res_init,
6219                      mlx5_ib_stage_dev_res_cleanup),
6220         STAGE_CREATE(MLX5_IB_STAGE_ODP,
6221                      mlx5_ib_stage_odp_init,
6222                      NULL),
6223         STAGE_CREATE(MLX5_IB_STAGE_COUNTERS,
6224                      mlx5_ib_stage_counters_init,
6225                      mlx5_ib_stage_counters_cleanup),
6226         STAGE_CREATE(MLX5_IB_STAGE_CONG_DEBUGFS,
6227                      mlx5_ib_stage_cong_debugfs_init,
6228                      mlx5_ib_stage_cong_debugfs_cleanup),
6229         STAGE_CREATE(MLX5_IB_STAGE_UAR,
6230                      mlx5_ib_stage_uar_init,
6231                      mlx5_ib_stage_uar_cleanup),
6232         STAGE_CREATE(MLX5_IB_STAGE_BFREG,
6233                      mlx5_ib_stage_bfrag_init,
6234                      mlx5_ib_stage_bfrag_cleanup),
6235         STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR,
6236                      NULL,
6237                      mlx5_ib_stage_pre_ib_reg_umr_cleanup),
6238         STAGE_CREATE(MLX5_IB_STAGE_SPECS,
6239                      mlx5_ib_stage_populate_specs,
6240                      NULL),
6241         STAGE_CREATE(MLX5_IB_STAGE_IB_REG,
6242                      mlx5_ib_stage_ib_reg_init,
6243                      mlx5_ib_stage_ib_reg_cleanup),
6244         STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR,
6245                      mlx5_ib_stage_post_ib_reg_umr_init,
6246                      NULL),
6247         STAGE_CREATE(MLX5_IB_STAGE_DELAY_DROP,
6248                      mlx5_ib_stage_delay_drop_init,
6249                      mlx5_ib_stage_delay_drop_cleanup),
6250 };
6251
6252 static const struct mlx5_ib_profile nic_rep_profile = {
6253         STAGE_CREATE(MLX5_IB_STAGE_INIT,
6254                      mlx5_ib_stage_init_init,
6255                      mlx5_ib_stage_init_cleanup),
6256         STAGE_CREATE(MLX5_IB_STAGE_FLOW_DB,
6257                      mlx5_ib_stage_flow_db_init,
6258                      mlx5_ib_stage_flow_db_cleanup),
6259         STAGE_CREATE(MLX5_IB_STAGE_CAPS,
6260                      mlx5_ib_stage_caps_init,
6261                      NULL),
6262         STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB,
6263                      mlx5_ib_stage_rep_non_default_cb,
6264                      NULL),
6265         STAGE_CREATE(MLX5_IB_STAGE_ROCE,
6266                      mlx5_ib_stage_rep_roce_init,
6267                      mlx5_ib_stage_rep_roce_cleanup),
6268         STAGE_CREATE(MLX5_IB_STAGE_DEVICE_RESOURCES,
6269                      mlx5_ib_stage_dev_res_init,
6270                      mlx5_ib_stage_dev_res_cleanup),
6271         STAGE_CREATE(MLX5_IB_STAGE_COUNTERS,
6272                      mlx5_ib_stage_counters_init,
6273                      mlx5_ib_stage_counters_cleanup),
6274         STAGE_CREATE(MLX5_IB_STAGE_UAR,
6275                      mlx5_ib_stage_uar_init,
6276                      mlx5_ib_stage_uar_cleanup),
6277         STAGE_CREATE(MLX5_IB_STAGE_BFREG,
6278                      mlx5_ib_stage_bfrag_init,
6279                      mlx5_ib_stage_bfrag_cleanup),
6280         STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR,
6281                      NULL,
6282                      mlx5_ib_stage_pre_ib_reg_umr_cleanup),
6283         STAGE_CREATE(MLX5_IB_STAGE_SPECS,
6284                      mlx5_ib_stage_populate_specs,
6285                      NULL),
6286         STAGE_CREATE(MLX5_IB_STAGE_IB_REG,
6287                      mlx5_ib_stage_ib_reg_init,
6288                      mlx5_ib_stage_ib_reg_cleanup),
6289         STAGE_CREATE(MLX5_IB_STAGE_POST_IB_REG_UMR,
6290                      mlx5_ib_stage_post_ib_reg_umr_init,
6291                      NULL),
6292         STAGE_CREATE(MLX5_IB_STAGE_REP_REG,
6293                      mlx5_ib_stage_rep_reg_init,
6294                      mlx5_ib_stage_rep_reg_cleanup),
6295 };
6296
6297 static void *mlx5_ib_add_slave_port(struct mlx5_core_dev *mdev)
6298 {
6299         struct mlx5_ib_multiport_info *mpi;
6300         struct mlx5_ib_dev *dev;
6301         bool bound = false;
6302         int err;
6303
6304         mpi = kzalloc(sizeof(*mpi), GFP_KERNEL);
6305         if (!mpi)
6306                 return NULL;
6307
6308         mpi->mdev = mdev;
6309
6310         err = mlx5_query_nic_vport_system_image_guid(mdev,
6311                                                      &mpi->sys_image_guid);
6312         if (err) {
6313                 kfree(mpi);
6314                 return NULL;
6315         }
6316
6317         mutex_lock(&mlx5_ib_multiport_mutex);
6318         list_for_each_entry(dev, &mlx5_ib_dev_list, ib_dev_list) {
6319                 if (dev->sys_image_guid == mpi->sys_image_guid)
6320                         bound = mlx5_ib_bind_slave_port(dev, mpi);
6321
6322                 if (bound) {
6323                         rdma_roce_rescan_device(&dev->ib_dev);
6324                         break;
6325                 }
6326         }
6327
6328         if (!bound) {
6329                 list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list);
6330                 dev_dbg(&mdev->pdev->dev, "no suitable IB device found to bind to, added to unaffiliated list.\n");
6331         }
6332         mutex_unlock(&mlx5_ib_multiport_mutex);
6333
6334         return mpi;
6335 }
6336
6337 static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
6338 {
6339         enum rdma_link_layer ll;
6340         struct mlx5_ib_dev *dev;
6341         int port_type_cap;
6342
6343         printk_once(KERN_INFO "%s", mlx5_version);
6344
6345         port_type_cap = MLX5_CAP_GEN(mdev, port_type);
6346         ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
6347
6348         if (mlx5_core_is_mp_slave(mdev) && ll == IB_LINK_LAYER_ETHERNET)
6349                 return mlx5_ib_add_slave_port(mdev);
6350
6351         dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
6352         if (!dev)
6353                 return NULL;
6354
6355         dev->mdev = mdev;
6356         dev->num_ports = max(MLX5_CAP_GEN(mdev, num_ports),
6357                              MLX5_CAP_GEN(mdev, num_vhca_ports));
6358
6359         if (MLX5_ESWITCH_MANAGER(mdev) &&
6360             mlx5_ib_eswitch_mode(mdev->priv.eswitch) == SRIOV_OFFLOADS) {
6361                 dev->rep = mlx5_ib_vport_rep(mdev->priv.eswitch, 0);
6362
6363                 return __mlx5_ib_add(dev, &nic_rep_profile);
6364         }
6365
6366         return __mlx5_ib_add(dev, &pf_profile);
6367 }
6368
6369 static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
6370 {
6371         struct mlx5_ib_multiport_info *mpi;
6372         struct mlx5_ib_dev *dev;
6373
6374         if (mlx5_core_is_mp_slave(mdev)) {
6375                 mpi = context;
6376                 mutex_lock(&mlx5_ib_multiport_mutex);
6377                 if (mpi->ibdev)
6378                         mlx5_ib_unbind_slave_port(mpi->ibdev, mpi);
6379                 list_del(&mpi->list);
6380                 mutex_unlock(&mlx5_ib_multiport_mutex);
6381                 return;
6382         }
6383
6384         dev = context;
6385         __mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX);
6386 }
6387
6388 static struct mlx5_interface mlx5_ib_interface = {
6389         .add            = mlx5_ib_add,
6390         .remove         = mlx5_ib_remove,
6391         .event          = mlx5_ib_event,
6392 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
6393         .pfault         = mlx5_ib_pfault,
6394 #endif
6395         .protocol       = MLX5_INTERFACE_PROTOCOL_IB,
6396 };
6397
6398 unsigned long mlx5_ib_get_xlt_emergency_page(void)
6399 {
6400         mutex_lock(&xlt_emergency_page_mutex);
6401         return xlt_emergency_page;
6402 }
6403
6404 void mlx5_ib_put_xlt_emergency_page(void)
6405 {
6406         mutex_unlock(&xlt_emergency_page_mutex);
6407 }
6408
6409 static int __init mlx5_ib_init(void)
6410 {
6411         int err;
6412
6413         xlt_emergency_page = __get_free_page(GFP_KERNEL);
6414         if (!xlt_emergency_page)
6415                 return -ENOMEM;
6416
6417         mutex_init(&xlt_emergency_page_mutex);
6418
6419         mlx5_ib_event_wq = alloc_ordered_workqueue("mlx5_ib_event_wq", 0);
6420         if (!mlx5_ib_event_wq) {
6421                 free_page(xlt_emergency_page);
6422                 return -ENOMEM;
6423         }
6424
6425         mlx5_ib_odp_init();
6426
6427         err = mlx5_register_interface(&mlx5_ib_interface);
6428
6429         return err;
6430 }
6431
6432 static void __exit mlx5_ib_cleanup(void)
6433 {
6434         mlx5_unregister_interface(&mlx5_ib_interface);
6435         destroy_workqueue(mlx5_ib_event_wq);
6436         mutex_destroy(&xlt_emergency_page_mutex);
6437         free_page(xlt_emergency_page);
6438 }
6439
6440 module_init(mlx5_ib_init);
6441 module_exit(mlx5_ib_cleanup);