drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <linux/sched/mm.h>
  43 #include <linux/sched/task.h>
  44
  45 #include <net/ipv6.h>
  46 #include <net/addrconf.h>
  47 #include <net/devlink.h>
  48
  49 #include <rdma/ib_smi.h>
  50 #include <rdma/ib_user_verbs.h>
  51 #include <rdma/ib_addr.h>
  52 #include <rdma/ib_cache.h>
  53
  54 #include <net/bonding.h>
  55
  56 #include <linux/mlx4/driver.h>
  57 #include <linux/mlx4/cmd.h>
  58 #include <linux/mlx4/qp.h>
  59
  60 #include "mlx4_ib.h"
  61 #include <rdma/mlx4-abi.h>
  62
  63 #define DRV_NAME        MLX4_IB_DRV_NAME
  64 #define DRV_VERSION     "4.0-0"
  65
  66 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  67 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  68 #define MLX4_IB_CARD_REV_A0   0xA0
  69
  70 MODULE_AUTHOR("Roland Dreier");
  71 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  72 MODULE_LICENSE("Dual BSD/GPL");
  73
  74 int mlx4_ib_sm_guid_assign = 0;
  75 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  76 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  77
  78 static const char mlx4_ib_version[] =
  79         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  80         DRV_VERSION "\n";
  81
  82 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  83 static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device,
  84                                                     u32 port_num);
  85
  86 static struct workqueue_struct *wq;
  87
  88 static int check_flow_steering_support(struct mlx4_dev *dev)
  89 {
  90         int eth_num_ports = 0;
  91         int ib_num_ports = 0;
  92
  93         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
  94
  95         if (dmfs) {
  96                 int i;
  97                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
  98                         eth_num_ports++;
  99                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 100                         ib_num_ports++;
 101                 dmfs &= (!ib_num_ports ||
 102                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 103                         (!eth_num_ports ||
 104                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 105                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 106                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 107                         dmfs = 0;
 108                 }
 109         }
 110         return dmfs;
 111 }
 112
 113 static int num_ib_ports(struct mlx4_dev *dev)
 114 {
 115         int ib_ports = 0;
 116         int i;
 117
 118         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 119                 ib_ports++;
 120
 121         return ib_ports;
 122 }
 123
 124 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device,
 125                                              u32 port_num)
 126 {
 127         struct mlx4_ib_dev *ibdev = to_mdev(device);
 128         struct net_device *dev;
 129
 130         rcu_read_lock();
 131         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 132
 133         if (dev) {
 134                 if (mlx4_is_bonded(ibdev->dev)) {
 135                         struct net_device *upper = NULL;
 136
 137                         upper = netdev_master_upper_dev_get_rcu(dev);
 138                         if (upper) {
 139                                 struct net_device *active;
 140
 141                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 142                                 if (active)
 143                                         dev = active;
 144                         }
 145                 }
 146         }
 147         dev_hold(dev);
 148
 149         rcu_read_unlock();
 150         return dev;
 151 }
 152
 153 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 154                                   struct mlx4_ib_dev *ibdev,
 155                                   u32 port_num)
 156 {
 157         struct mlx4_cmd_mailbox *mailbox;
 158         int err;
 159         struct mlx4_dev *dev = ibdev->dev;
 160         int i;
 161         union ib_gid *gid_tbl;
 162
 163         mailbox = mlx4_alloc_cmd_mailbox(dev);
 164         if (IS_ERR(mailbox))
 165                 return -ENOMEM;
 166
 167         gid_tbl = mailbox->buf;
 168
 169         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 170                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 171
 172         err = mlx4_cmd(dev, mailbox->dma,
 173                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 174                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 175                        MLX4_CMD_WRAPPED);
 176         if (mlx4_is_bonded(dev))
 177                 err += mlx4_cmd(dev, mailbox->dma,
 178                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 179                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 180                                 MLX4_CMD_WRAPPED);
 181
 182         mlx4_free_cmd_mailbox(dev, mailbox);
 183         return err;
 184 }
 185
 186 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 187                                      struct mlx4_ib_dev *ibdev,
 188                                      u32 port_num)
 189 {
 190         struct mlx4_cmd_mailbox *mailbox;
 191         int err;
 192         struct mlx4_dev *dev = ibdev->dev;
 193         int i;
 194         struct {
 195                 union ib_gid    gid;
 196                 __be32          rsrvd1[2];
 197                 __be16          rsrvd2;
 198                 u8              type;
 199                 u8              version;
 200                 __be32          rsrvd3;
 201         } *gid_tbl;
 202
 203         mailbox = mlx4_alloc_cmd_mailbox(dev);
 204         if (IS_ERR(mailbox))
 205                 return -ENOMEM;
 206
 207         gid_tbl = mailbox->buf;
 208         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 209                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 210                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 211                         gid_tbl[i].version = 2;
 212                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 213                                 gid_tbl[i].type = 1;
 214                 }
 215         }
 216
 217         err = mlx4_cmd(dev, mailbox->dma,
 218                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 219                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 220                        MLX4_CMD_WRAPPED);
 221         if (mlx4_is_bonded(dev))
 222                 err += mlx4_cmd(dev, mailbox->dma,
 223                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 224                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 225                                 MLX4_CMD_WRAPPED);
 226
 227         mlx4_free_cmd_mailbox(dev, mailbox);
 228         return err;
 229 }
 230
 231 static int mlx4_ib_update_gids(struct gid_entry *gids,
 232                                struct mlx4_ib_dev *ibdev,
 233                                u32 port_num)
 234 {
 235         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 236                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 237
 238         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 239 }
 240
 241 static void free_gid_entry(struct gid_entry *entry)
 242 {
 243         memset(&entry->gid, 0, sizeof(entry->gid));
 244         kfree(entry->ctx);
 245         entry->ctx = NULL;
 246 }
 247
 248 static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context)
 249 {
 250         struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
 251         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 252         struct mlx4_port_gid_table   *port_gid_table;
 253         int free = -1, found = -1;
 254         int ret = 0;
 255         int hw_update = 0;
 256         int i;
 257         struct gid_entry *gids = NULL;
 258         u16 vlan_id = 0xffff;
 259         u8 mac[ETH_ALEN];
 260
 261         if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
 262                 return -EINVAL;
 263
 264         if (attr->port_num > MLX4_MAX_PORTS)
 265                 return -EINVAL;
 266
 267         if (!context)
 268                 return -EINVAL;
 269
 270         ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]);
 271         if (ret)
 272                 return ret;
 273         port_gid_table = &iboe->gids[attr->port_num - 1];
 274         spin_lock_bh(&iboe->lock);
 275         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 276                 if (!memcmp(&port_gid_table->gids[i].gid,
 277                             &attr->gid, sizeof(attr->gid)) &&
 278                     port_gid_table->gids[i].gid_type == attr->gid_type &&
 279                     port_gid_table->gids[i].vlan_id == vlan_id)  {
 280                         found = i;
 281                         break;
 282                 }
 283                 if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid))
 284                         free = i; /* HW has space */
 285         }
 286
 287         if (found < 0) {
 288                 if (free < 0) {
 289                         ret = -ENOSPC;
 290                 } else {
 291                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 292                         if (!port_gid_table->gids[free].ctx) {
 293                                 ret = -ENOMEM;
 294                         } else {
 295                                 *context = port_gid_table->gids[free].ctx;
 296                                 memcpy(&port_gid_table->gids[free].gid,
 297                                        &attr->gid, sizeof(attr->gid));
 298                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 299                                 port_gid_table->gids[free].vlan_id = vlan_id;
 300                                 port_gid_table->gids[free].ctx->real_index = free;
 301                                 port_gid_table->gids[free].ctx->refcount = 1;
 302                                 hw_update = 1;
 303                         }
 304                 }
 305         } else {
 306                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 307                 *context = ctx;
 308                 ctx->refcount++;
 309         }
 310         if (!ret && hw_update) {
 311                 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
 312                                      GFP_ATOMIC);
 313                 if (!gids) {
 314                         ret = -ENOMEM;
 315                         *context = NULL;
 316                         free_gid_entry(&port_gid_table->gids[free]);
 317                 } else {
 318                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 319                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 320                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 321                         }
 322                 }
 323         }
 324         spin_unlock_bh(&iboe->lock);
 325
 326         if (!ret && hw_update) {
 327                 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
 328                 if (ret) {
 329                         spin_lock_bh(&iboe->lock);
 330                         *context = NULL;
 331                         free_gid_entry(&port_gid_table->gids[free]);
 332                         spin_unlock_bh(&iboe->lock);
 333                 }
 334                 kfree(gids);
 335         }
 336
 337         return ret;
 338 }
 339
 340 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context)
 341 {
 342         struct gid_cache_context *ctx = *context;
 343         struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
 344         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 345         struct mlx4_port_gid_table   *port_gid_table;
 346         int ret = 0;
 347         int hw_update = 0;
 348         struct gid_entry *gids = NULL;
 349
 350         if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
 351                 return -EINVAL;
 352
 353         if (attr->port_num > MLX4_MAX_PORTS)
 354                 return -EINVAL;
 355
 356         port_gid_table = &iboe->gids[attr->port_num - 1];
 357         spin_lock_bh(&iboe->lock);
 358         if (ctx) {
 359                 ctx->refcount--;
 360                 if (!ctx->refcount) {
 361                         unsigned int real_index = ctx->real_index;
 362
 363                         free_gid_entry(&port_gid_table->gids[real_index]);
 364                         hw_update = 1;
 365                 }
 366         }
 367         if (!ret && hw_update) {
 368                 int i;
 369
 370                 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
 371                                      GFP_ATOMIC);
 372                 if (!gids) {
 373                         ret = -ENOMEM;
 374                 } else {
 375                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 376                                 memcpy(&gids[i].gid,
 377                                        &port_gid_table->gids[i].gid,
 378                                        sizeof(union ib_gid));
 379                                 gids[i].gid_type =
 380                                     port_gid_table->gids[i].gid_type;
 381                         }
 382                 }
 383         }
 384         spin_unlock_bh(&iboe->lock);
 385
 386         if (!ret && hw_update) {
 387                 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
 388                 kfree(gids);
 389         }
 390         return ret;
 391 }
 392
 393 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 394                                     const struct ib_gid_attr *attr)
 395 {
 396         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 397         struct gid_cache_context *ctx = NULL;
 398         struct mlx4_port_gid_table   *port_gid_table;
 399         int real_index = -EINVAL;
 400         int i;
 401         unsigned long flags;
 402         u32 port_num = attr->port_num;
 403
 404         if (port_num > MLX4_MAX_PORTS)
 405                 return -EINVAL;
 406
 407         if (mlx4_is_bonded(ibdev->dev))
 408                 port_num = 1;
 409
 410         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 411                 return attr->index;
 412
 413         spin_lock_irqsave(&iboe->lock, flags);
 414         port_gid_table = &iboe->gids[port_num - 1];
 415
 416         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 417                 if (!memcmp(&port_gid_table->gids[i].gid,
 418                             &attr->gid, sizeof(attr->gid)) &&
 419                     attr->gid_type == port_gid_table->gids[i].gid_type) {
 420                         ctx = port_gid_table->gids[i].ctx;
 421                         break;
 422                 }
 423         if (ctx)
 424                 real_index = ctx->real_index;
 425         spin_unlock_irqrestore(&iboe->lock, flags);
 426         return real_index;
 427 }
 428
 429 static int mlx4_ib_query_device(struct ib_device *ibdev,
 430                                 struct ib_device_attr *props,
 431                                 struct ib_udata *uhw)
 432 {
 433         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 434         struct ib_smp *in_mad  = NULL;
 435         struct ib_smp *out_mad = NULL;
 436         int err;
 437         int have_ib_ports;
 438         struct mlx4_uverbs_ex_query_device cmd;
 439         struct mlx4_uverbs_ex_query_device_resp resp = {};
 440         struct mlx4_clock_params clock_params;
 441
 442         if (uhw->inlen) {
 443                 if (uhw->inlen < sizeof(cmd))
 444                         return -EINVAL;
 445
 446                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 447                 if (err)
 448                         return err;
 449
 450                 if (cmd.comp_mask)
 451                         return -EINVAL;
 452
 453                 if (cmd.reserved)
 454                         return -EINVAL;
 455         }
 456
 457         resp.response_length = offsetof(typeof(resp), response_length) +
 458                 sizeof(resp.response_length);
 459         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 460         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 461         err = -ENOMEM;
 462         if (!in_mad || !out_mad)
 463                 goto out;
 464
 465         ib_init_query_mad(in_mad);
 466         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 467
 468         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 469                            1, NULL, NULL, in_mad, out_mad);
 470         if (err)
 471                 goto out;
 472
 473         memset(props, 0, sizeof *props);
 474
 475         have_ib_ports = num_ib_ports(dev->dev);
 476
 477         props->fw_ver = dev->dev->caps.fw_ver;
 478         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 479                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 480                 IB_DEVICE_SYS_IMAGE_GUID                |
 481                 IB_DEVICE_RC_RNR_NAK_GEN;
 482         props->kernel_cap_flags = IBK_BLOCK_MULTICAST_LOOPBACK;
 483         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 484                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 485         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 486                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 487         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 488                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 489         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 490                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 491         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 492                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 493         if (dev->dev->caps.max_gso_sz &&
 494             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 495             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 496                 props->kernel_cap_flags |= IBK_UD_TSO;
 497         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 498                 props->kernel_cap_flags |= IBK_LOCAL_DMA_LKEY;
 499         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 500             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 501             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 502                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 503         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 504                 props->device_cap_flags |= IB_DEVICE_XRC;
 505         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 506                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 507         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 508                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 509                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 510                 else
 511                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 512         }
 513         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 514                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 515
 516         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 517
 518         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 519                 0xffffff;
 520         props->vendor_part_id      = dev->dev->persist->pdev->device;
 521         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 522         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 523
 524         props->max_mr_size         = ~0ull;
 525         props->page_size_cap       = dev->dev->caps.page_size_cap;
 526         props->max_qp              = dev->dev->quotas.qp;
 527         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 528         props->max_send_sge =
 529                 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
 530         props->max_recv_sge =
 531                 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
 532         props->max_sge_rd = MLX4_MAX_SGE_RD;
 533         props->max_cq              = dev->dev->quotas.cq;
 534         props->max_cqe             = dev->dev->caps.max_cqes;
 535         props->max_mr              = dev->dev->quotas.mpt;
 536         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 537         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 538         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 539         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 540         props->max_srq             = dev->dev->quotas.srq;
 541         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 542         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 543         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 544         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 545         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 546                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 547         props->masked_atomic_cap   = props->atomic_cap;
 548         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 549         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 550         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 551         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 552                                            props->max_mcast_grp;
 553         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 554         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 555         props->max_ah = INT_MAX;
 556
 557         if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
 558             mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) {
 559                 if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) {
 560                         props->rss_caps.max_rwq_indirection_tables =
 561                                 props->max_qp;
 562                         props->rss_caps.max_rwq_indirection_table_size =
 563                                 dev->dev->caps.max_rss_tbl_sz;
 564                         props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
 565                         props->max_wq_type_rq = props->max_qp;
 566                 }
 567
 568                 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
 569                         props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
 570         }
 571
 572         props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
 573         props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
 574
 575         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 576                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 577                 if (!mlx4_get_internal_clock_params(dev->dev, &clock_params)) {
 578                         resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET;
 579                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 580                 }
 581         }
 582
 583         if (uhw->outlen >= resp.response_length +
 584             sizeof(resp.max_inl_recv_sz)) {
 585                 resp.response_length += sizeof(resp.max_inl_recv_sz);
 586                 resp.max_inl_recv_sz  = dev->dev->caps.max_rq_sg *
 587                         sizeof(struct mlx4_wqe_data_seg);
 588         }
 589
 590         if (offsetofend(typeof(resp), rss_caps) <= uhw->outlen) {
 591                 if (props->rss_caps.supported_qpts) {
 592                         resp.rss_caps.rx_hash_function =
 593                                 MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
 594
 595                         resp.rss_caps.rx_hash_fields_mask =
 596                                 MLX4_IB_RX_HASH_SRC_IPV4 |
 597                                 MLX4_IB_RX_HASH_DST_IPV4 |
 598                                 MLX4_IB_RX_HASH_SRC_IPV6 |
 599                                 MLX4_IB_RX_HASH_DST_IPV6 |
 600                                 MLX4_IB_RX_HASH_SRC_PORT_TCP |
 601                                 MLX4_IB_RX_HASH_DST_PORT_TCP |
 602                                 MLX4_IB_RX_HASH_SRC_PORT_UDP |
 603                                 MLX4_IB_RX_HASH_DST_PORT_UDP;
 604
 605                         if (dev->dev->caps.tunnel_offload_mode ==
 606                             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
 607                                 resp.rss_caps.rx_hash_fields_mask |=
 608                                         MLX4_IB_RX_HASH_INNER;
 609                 }
 610                 resp.response_length = offsetof(typeof(resp), rss_caps) +
 611                                        sizeof(resp.rss_caps);
 612         }
 613
 614         if (offsetofend(typeof(resp), tso_caps) <= uhw->outlen) {
 615                 if (dev->dev->caps.max_gso_sz &&
 616                     ((mlx4_ib_port_link_layer(ibdev, 1) ==
 617                     IB_LINK_LAYER_ETHERNET) ||
 618                     (mlx4_ib_port_link_layer(ibdev, 2) ==
 619                     IB_LINK_LAYER_ETHERNET))) {
 620                         resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz;
 621                         resp.tso_caps.supported_qpts |=
 622                                 1 << IB_QPT_RAW_PACKET;
 623                 }
 624                 resp.response_length = offsetof(typeof(resp), tso_caps) +
 625                                        sizeof(resp.tso_caps);
 626         }
 627
 628         if (uhw->outlen) {
 629                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 630                 if (err)
 631                         goto out;
 632         }
 633 out:
 634         kfree(in_mad);
 635         kfree(out_mad);
 636
 637         return err;
 638 }
 639
 640 static enum rdma_link_layer
 641 mlx4_ib_port_link_layer(struct ib_device *device, u32 port_num)
 642 {
 643         struct mlx4_dev *dev = to_mdev(device)->dev;
 644
 645         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 646                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 647 }
 648
 649 static int ib_link_query_port(struct ib_device *ibdev, u32 port,
 650                               struct ib_port_attr *props, int netw_view)
 651 {
 652         struct ib_smp *in_mad  = NULL;
 653         struct ib_smp *out_mad = NULL;
 654         int ext_active_speed;
 655         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 656         int err = -ENOMEM;
 657
 658         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 659         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 660         if (!in_mad || !out_mad)
 661                 goto out;
 662
 663         ib_init_query_mad(in_mad);
 664         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 665         in_mad->attr_mod = cpu_to_be32(port);
 666
 667         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 668                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 669
 670         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 671                                 in_mad, out_mad);
 672         if (err)
 673                 goto out;
 674
 675
 676         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 677         props->lmc              = out_mad->data[34] & 0x7;
 678         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 679         props->sm_sl            = out_mad->data[36] & 0xf;
 680         props->state            = out_mad->data[32] & 0xf;
 681         props->phys_state       = out_mad->data[33] >> 4;
 682         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 683         if (netw_view)
 684                 props->gid_tbl_len = out_mad->data[50];
 685         else
 686                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 687         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 688         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 689         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 690         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 691         props->active_width     = out_mad->data[31] & 0xf;
 692         props->active_speed     = out_mad->data[35] >> 4;
 693         props->max_mtu          = out_mad->data[41] & 0xf;
 694         props->active_mtu       = out_mad->data[36] >> 4;
 695         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 696         props->max_vl_num       = out_mad->data[37] >> 4;
 697         props->init_type_reply  = out_mad->data[41] >> 4;
 698
 699         /* Check if extended speeds (EDR/FDR/...) are supported */
 700         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 701                 ext_active_speed = out_mad->data[62] >> 4;
 702
 703                 switch (ext_active_speed) {
 704                 case 1:
 705                         props->active_speed = IB_SPEED_FDR;
 706                         break;
 707                 case 2:
 708                         props->active_speed = IB_SPEED_EDR;
 709                         break;
 710                 }
 711         }
 712
 713         /* If reported active speed is QDR, check if is FDR-10 */
 714         if (props->active_speed == IB_SPEED_QDR) {
 715                 ib_init_query_mad(in_mad);
 716                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 717                 in_mad->attr_mod = cpu_to_be32(port);
 718
 719                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 720                                    NULL, NULL, in_mad, out_mad);
 721                 if (err)
 722                         goto out;
 723
 724                 /* Checking LinkSpeedActive for FDR-10 */
 725                 if (out_mad->data[15] & 0x1)
 726                         props->active_speed = IB_SPEED_FDR10;
 727         }
 728
 729         /* Avoid wrong speed value returned by FW if the IB link is down. */
 730         if (props->state == IB_PORT_DOWN)
 731                  props->active_speed = IB_SPEED_SDR;
 732
 733 out:
 734         kfree(in_mad);
 735         kfree(out_mad);
 736         return err;
 737 }
 738
 739 static u8 state_to_phys_state(enum ib_port_state state)
 740 {
 741         return state == IB_PORT_ACTIVE ?
 742                 IB_PORT_PHYS_STATE_LINK_UP : IB_PORT_PHYS_STATE_DISABLED;
 743 }
 744
 745 static int eth_link_query_port(struct ib_device *ibdev, u32 port,
 746                                struct ib_port_attr *props)
 747 {
 748
 749         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 750         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 751         struct net_device *ndev;
 752         enum ib_mtu tmp;
 753         struct mlx4_cmd_mailbox *mailbox;
 754         int err = 0;
 755         int is_bonded = mlx4_is_bonded(mdev->dev);
 756
 757         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 758         if (IS_ERR(mailbox))
 759                 return PTR_ERR(mailbox);
 760
 761         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 762                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 763                            MLX4_CMD_WRAPPED);
 764         if (err)
 765                 goto out;
 766
 767         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ||
 768                                    (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 769                                            IB_WIDTH_4X : IB_WIDTH_1X;
 770         props->active_speed     =  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 771                                            IB_SPEED_FDR : IB_SPEED_QDR;
 772         props->port_cap_flags   = IB_PORT_CM_SUP;
 773         props->ip_gids = true;
 774         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 775         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 776         if (mdev->dev->caps.pkey_table_len[port])
 777                 props->pkey_tbl_len = 1;
 778         props->max_mtu          = IB_MTU_4096;
 779         props->max_vl_num       = 2;
 780         props->state            = IB_PORT_DOWN;
 781         props->phys_state       = state_to_phys_state(props->state);
 782         props->active_mtu       = IB_MTU_256;
 783         spin_lock_bh(&iboe->lock);
 784         ndev = iboe->netdevs[port - 1];
 785         if (ndev && is_bonded) {
 786                 rcu_read_lock(); /* required to get upper dev */
 787                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 788                 rcu_read_unlock();
 789         }
 790         if (!ndev)
 791                 goto out_unlock;
 792
 793         tmp = iboe_get_mtu(ndev->mtu);
 794         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 795
 796         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 797                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 798         props->phys_state       = state_to_phys_state(props->state);
 799 out_unlock:
 800         spin_unlock_bh(&iboe->lock);
 801 out:
 802         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 803         return err;
 804 }
 805
 806 int __mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
 807                          struct ib_port_attr *props, int netw_view)
 808 {
 809         int err;
 810
 811         /* props being zeroed by the caller, avoid zeroing it here */
 812
 813         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 814                 ib_link_query_port(ibdev, port, props, netw_view) :
 815                                 eth_link_query_port(ibdev, port, props);
 816
 817         return err;
 818 }
 819
 820 static int mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
 821                               struct ib_port_attr *props)
 822 {
 823         /* returns host view */
 824         return __mlx4_ib_query_port(ibdev, port, props, 0);
 825 }
 826
 827 int __mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
 828                         union ib_gid *gid, int netw_view)
 829 {
 830         struct ib_smp *in_mad  = NULL;
 831         struct ib_smp *out_mad = NULL;
 832         int err = -ENOMEM;
 833         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 834         int clear = 0;
 835         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 836
 837         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 838         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 839         if (!in_mad || !out_mad)
 840                 goto out;
 841
 842         ib_init_query_mad(in_mad);
 843         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 844         in_mad->attr_mod = cpu_to_be32(port);
 845
 846         if (mlx4_is_mfunc(dev->dev) && netw_view)
 847                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 848
 849         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 850         if (err)
 851                 goto out;
 852
 853         memcpy(gid->raw, out_mad->data + 8, 8);
 854
 855         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 856                 if (index) {
 857                         /* For any index > 0, return the null guid */
 858                         err = 0;
 859                         clear = 1;
 860                         goto out;
 861                 }
 862         }
 863
 864         ib_init_query_mad(in_mad);
 865         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 866         in_mad->attr_mod = cpu_to_be32(index / 8);
 867
 868         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 869                            NULL, NULL, in_mad, out_mad);
 870         if (err)
 871                 goto out;
 872
 873         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 874
 875 out:
 876         if (clear)
 877                 memset(gid->raw + 8, 0, 8);
 878         kfree(in_mad);
 879         kfree(out_mad);
 880         return err;
 881 }
 882
 883 static int mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
 884                              union ib_gid *gid)
 885 {
 886         if (rdma_protocol_ib(ibdev, port))
 887                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 888         return 0;
 889 }
 890
 891 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u32 port,
 892                                u64 *sl2vl_tbl)
 893 {
 894         union sl2vl_tbl_to_u64 sl2vl64;
 895         struct ib_smp *in_mad  = NULL;
 896         struct ib_smp *out_mad = NULL;
 897         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 898         int err = -ENOMEM;
 899         int jj;
 900
 901         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 902                 *sl2vl_tbl = 0;
 903                 return 0;
 904         }
 905
 906         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 907         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 908         if (!in_mad || !out_mad)
 909                 goto out;
 910
 911         ib_init_query_mad(in_mad);
 912         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 913         in_mad->attr_mod = 0;
 914
 915         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 916                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 917
 918         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 919                            in_mad, out_mad);
 920         if (err)
 921                 goto out;
 922
 923         for (jj = 0; jj < 8; jj++)
 924                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 925         *sl2vl_tbl = sl2vl64.sl64;
 926
 927 out:
 928         kfree(in_mad);
 929         kfree(out_mad);
 930         return err;
 931 }
 932
 933 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 934 {
 935         u64 sl2vl;
 936         int i;
 937         int err;
 938
 939         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 940                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 941                         continue;
 942                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 943                 if (err) {
 944                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 945                                i, err);
 946                         sl2vl = 0;
 947                 }
 948                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 949         }
 950 }
 951
 952 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
 953                          u16 *pkey, int netw_view)
 954 {
 955         struct ib_smp *in_mad  = NULL;
 956         struct ib_smp *out_mad = NULL;
 957         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 958         int err = -ENOMEM;
 959
 960         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 961         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 962         if (!in_mad || !out_mad)
 963                 goto out;
 964
 965         ib_init_query_mad(in_mad);
 966         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 967         in_mad->attr_mod = cpu_to_be32(index / 32);
 968
 969         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 970                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 971
 972         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 973                            in_mad, out_mad);
 974         if (err)
 975                 goto out;
 976
 977         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 978
 979 out:
 980         kfree(in_mad);
 981         kfree(out_mad);
 982         return err;
 983 }
 984
 985 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
 986                               u16 *pkey)
 987 {
 988         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 989 }
 990
 991 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 992                                  struct ib_device_modify *props)
 993 {
 994         struct mlx4_cmd_mailbox *mailbox;
 995         unsigned long flags;
 996
 997         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 998                 return -EOPNOTSUPP;
 999
1000         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1001                 return 0;
1002
1003         if (mlx4_is_slave(to_mdev(ibdev)->dev))
1004                 return -EOPNOTSUPP;
1005
1006         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
1007         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1008         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
1009
1010         /*
1011          * If possible, pass node desc to FW, so it can generate
1012          * a 144 trap.  If cmd fails, just ignore.
1013          */
1014         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
1015         if (IS_ERR(mailbox))
1016                 return 0;
1017
1018         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1019         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
1020                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1021
1022         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
1023
1024         return 0;
1025 }
1026
1027 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u32 port,
1028                             int reset_qkey_viols, u32 cap_mask)
1029 {
1030         struct mlx4_cmd_mailbox *mailbox;
1031         int err;
1032
1033         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
1034         if (IS_ERR(mailbox))
1035                 return PTR_ERR(mailbox);
1036
1037         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1038                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
1039                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
1040         } else {
1041                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
1042                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
1043         }
1044
1045         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
1046                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1047                        MLX4_CMD_WRAPPED);
1048
1049         mlx4_free_cmd_mailbox(dev->dev, mailbox);
1050         return err;
1051 }
1052
1053 static int mlx4_ib_modify_port(struct ib_device *ibdev, u32 port, int mask,
1054                                struct ib_port_modify *props)
1055 {
1056         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1057         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1058         struct ib_port_attr attr;
1059         u32 cap_mask;
1060         int err;
1061
1062         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1063          * of whether port link layer is ETH or IB. For ETH ports, qkey
1064          * violations and port capabilities are not meaningful.
1065          */
1066         if (is_eth)
1067                 return 0;
1068
1069         mutex_lock(&mdev->cap_mask_mutex);
1070
1071         err = ib_query_port(ibdev, port, &attr);
1072         if (err)
1073                 goto out;
1074
1075         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1076                 ~props->clr_port_cap_mask;
1077
1078         err = mlx4_ib_SET_PORT(mdev, port,
1079                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1080                                cap_mask);
1081
1082 out:
1083         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1084         return err;
1085 }
1086
1087 static int mlx4_ib_alloc_ucontext(struct ib_ucontext *uctx,
1088                                   struct ib_udata *udata)
1089 {
1090         struct ib_device *ibdev = uctx->device;
1091         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1092         struct mlx4_ib_ucontext *context = to_mucontext(uctx);
1093         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1094         struct mlx4_ib_alloc_ucontext_resp resp;
1095         int err;
1096
1097         if (!dev->ib_active)
1098                 return -EAGAIN;
1099
1100         if (ibdev->ops.uverbs_abi_ver ==
1101             MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1102                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1103                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1104                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1105         } else {
1106                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1107                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1108                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1109                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1110                 resp.cqe_size         = dev->dev->caps.cqe_size;
1111         }
1112
1113         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1114         if (err)
1115                 return err;
1116
1117         INIT_LIST_HEAD(&context->db_page_list);
1118         mutex_init(&context->db_page_mutex);
1119
1120         INIT_LIST_HEAD(&context->wqn_ranges_list);
1121         mutex_init(&context->wqn_ranges_mutex);
1122
1123         if (ibdev->ops.uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1124                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1125         else
1126                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1127
1128         if (err) {
1129                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1130                 return -EFAULT;
1131         }
1132
1133         return err;
1134 }
1135
1136 static void mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1137 {
1138         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1139
1140         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1141 }
1142
1143 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1144 {
1145 }
1146
1147 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1148 {
1149         struct mlx4_ib_dev *dev = to_mdev(context->device);
1150
1151         switch (vma->vm_pgoff) {
1152         case 0:
1153                 return rdma_user_mmap_io(context, vma,
1154                                          to_mucontext(context)->uar.pfn,
1155                                          PAGE_SIZE,
1156                                          pgprot_noncached(vma->vm_page_prot),
1157                                          NULL);
1158
1159         case 1:
1160                 if (dev->dev->caps.bf_reg_size == 0)
1161                         return -EINVAL;
1162                 return rdma_user_mmap_io(
1163                         context, vma,
1164                         to_mucontext(context)->uar.pfn +
1165                                 dev->dev->caps.num_uars,
1166                         PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot),
1167                         NULL);
1168
1169         case 3: {
1170                 struct mlx4_clock_params params;
1171                 int ret;
1172
1173                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1174                 if (ret)
1175                         return ret;
1176
1177                 return rdma_user_mmap_io(
1178                         context, vma,
1179                         (pci_resource_start(dev->dev->persist->pdev,
1180                                             params.bar) +
1181                          params.offset) >>
1182                                 PAGE_SHIFT,
1183                         PAGE_SIZE, pgprot_noncached(vma->vm_page_prot),
1184                         NULL);
1185         }
1186
1187         default:
1188                 return -EINVAL;
1189         }
1190 }
1191
1192 static int mlx4_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
1193 {
1194         struct mlx4_ib_pd *pd = to_mpd(ibpd);
1195         struct ib_device *ibdev = ibpd->device;
1196         int err;
1197
1198         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1199         if (err)
1200                 return err;
1201
1202         if (udata && ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) {
1203                 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1204                 return -EFAULT;
1205         }
1206         return 0;
1207 }
1208
1209 static int mlx4_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
1210 {
1211         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1212         return 0;
1213 }
1214
1215 static int mlx4_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
1216 {
1217         struct mlx4_ib_dev *dev = to_mdev(ibxrcd->device);
1218         struct mlx4_ib_xrcd *xrcd = to_mxrcd(ibxrcd);
1219         struct ib_cq_init_attr cq_attr = {};
1220         int err;
1221
1222         if (!(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1223                 return -EOPNOTSUPP;
1224
1225         err = mlx4_xrcd_alloc(dev->dev, &xrcd->xrcdn);
1226         if (err)
1227                 return err;
1228
1229         xrcd->pd = ib_alloc_pd(ibxrcd->device, 0);
1230         if (IS_ERR(xrcd->pd)) {
1231                 err = PTR_ERR(xrcd->pd);
1232                 goto err2;
1233         }
1234
1235         cq_attr.cqe = 1;
1236         xrcd->cq = ib_create_cq(ibxrcd->device, NULL, NULL, xrcd, &cq_attr);
1237         if (IS_ERR(xrcd->cq)) {
1238                 err = PTR_ERR(xrcd->cq);
1239                 goto err3;
1240         }
1241
1242         return 0;
1243
1244 err3:
1245         ib_dealloc_pd(xrcd->pd);
1246 err2:
1247         mlx4_xrcd_free(dev->dev, xrcd->xrcdn);
1248         return err;
1249 }
1250
1251 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
1252 {
1253         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1254         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1255         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1256         return 0;
1257 }
1258
1259 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1260 {
1261         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1262         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1263         struct mlx4_ib_gid_entry *ge;
1264
1265         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1266         if (!ge)
1267                 return -ENOMEM;
1268
1269         ge->gid = *gid;
1270         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1271                 ge->port = mqp->port;
1272                 ge->added = 1;
1273         }
1274
1275         mutex_lock(&mqp->mutex);
1276         list_add_tail(&ge->list, &mqp->gid_list);
1277         mutex_unlock(&mqp->mutex);
1278
1279         return 0;
1280 }
1281
1282 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1283                                           struct mlx4_ib_counters *ctr_table)
1284 {
1285         struct counter_index *counter, *tmp_count;
1286
1287         mutex_lock(&ctr_table->mutex);
1288         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1289                                  list) {
1290                 if (counter->allocated)
1291                         mlx4_counter_free(ibdev->dev, counter->index);
1292                 list_del(&counter->list);
1293                 kfree(counter);
1294         }
1295         mutex_unlock(&ctr_table->mutex);
1296 }
1297
1298 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1299                    union ib_gid *gid)
1300 {
1301         struct net_device *ndev;
1302         int ret = 0;
1303
1304         if (!mqp->port)
1305                 return 0;
1306
1307         spin_lock_bh(&mdev->iboe.lock);
1308         ndev = mdev->iboe.netdevs[mqp->port - 1];
1309         dev_hold(ndev);
1310         spin_unlock_bh(&mdev->iboe.lock);
1311
1312         if (ndev) {
1313                 ret = 1;
1314                 dev_put(ndev);
1315         }
1316
1317         return ret;
1318 }
1319
1320 struct mlx4_ib_steering {
1321         struct list_head list;
1322         struct mlx4_flow_reg_id reg_id;
1323         union ib_gid gid;
1324 };
1325
1326 #define LAST_ETH_FIELD vlan_tag
1327 #define LAST_IB_FIELD sl
1328 #define LAST_IPV4_FIELD dst_ip
1329 #define LAST_TCP_UDP_FIELD src_port
1330
1331 /* Field is the last supported field */
1332 #define FIELDS_NOT_SUPPORTED(filter, field)\
1333         memchr_inv((void *)&filter.field  +\
1334                    sizeof(filter.field), 0,\
1335                    sizeof(filter) -\
1336                    offsetof(typeof(filter), field) -\
1337                    sizeof(filter.field))
1338
1339 static int parse_flow_attr(struct mlx4_dev *dev,
1340                            u32 qp_num,
1341                            union ib_flow_spec *ib_spec,
1342                            struct _rule_hw *mlx4_spec)
1343 {
1344         enum mlx4_net_trans_rule_id type;
1345
1346         switch (ib_spec->type) {
1347         case IB_FLOW_SPEC_ETH:
1348                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1349                         return -ENOTSUPP;
1350
1351                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1352                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1353                        ETH_ALEN);
1354                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1355                        ETH_ALEN);
1356                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1357                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1358                 break;
1359         case IB_FLOW_SPEC_IB:
1360                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1361                         return -ENOTSUPP;
1362
1363                 type = MLX4_NET_TRANS_RULE_ID_IB;
1364                 mlx4_spec->ib.l3_qpn =
1365                         cpu_to_be32(qp_num);
1366                 mlx4_spec->ib.qpn_mask =
1367                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1368                 break;
1369
1370
1371         case IB_FLOW_SPEC_IPV4:
1372                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1373                         return -ENOTSUPP;
1374
1375                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1376                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1377                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1378                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1379                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1380                 break;
1381
1382         case IB_FLOW_SPEC_TCP:
1383         case IB_FLOW_SPEC_UDP:
1384                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1385                         return -ENOTSUPP;
1386
1387                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1388                                         MLX4_NET_TRANS_RULE_ID_TCP :
1389                                         MLX4_NET_TRANS_RULE_ID_UDP;
1390                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1391                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1392                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1393                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1394                 break;
1395
1396         default:
1397                 return -EINVAL;
1398         }
1399         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1400             mlx4_hw_rule_sz(dev, type) < 0)
1401                 return -EINVAL;
1402         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1403         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1404         return mlx4_hw_rule_sz(dev, type);
1405 }
1406
1407 struct default_rules {
1408         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1409         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1410         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1411         __u8  link_layer;
1412 };
1413 static const struct default_rules default_table[] = {
1414         {
1415                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1416                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1417                 .rules_create_list = {IB_FLOW_SPEC_IB},
1418                 .link_layer = IB_LINK_LAYER_INFINIBAND
1419         }
1420 };
1421
1422 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1423                                          struct ib_flow_attr *flow_attr)
1424 {
1425         int i, j, k;
1426         void *ib_flow;
1427         const struct default_rules *pdefault_rules = default_table;
1428         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1429
1430         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1431                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1432                 memset(&field_types, 0, sizeof(field_types));
1433
1434                 if (link_layer != pdefault_rules->link_layer)
1435                         continue;
1436
1437                 ib_flow = flow_attr + 1;
1438                 /* we assume the specs are sorted */
1439                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1440                      j < flow_attr->num_of_specs; k++) {
1441                         union ib_flow_spec *current_flow =
1442                                 (union ib_flow_spec *)ib_flow;
1443
1444                         /* same layer but different type */
1445                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1446                              (pdefault_rules->mandatory_fields[k] &
1447                               IB_FLOW_SPEC_LAYER_MASK)) &&
1448                             (current_flow->type !=
1449                              pdefault_rules->mandatory_fields[k]))
1450                                 goto out;
1451
1452                         /* same layer, try match next one */
1453                         if (current_flow->type ==
1454                             pdefault_rules->mandatory_fields[k]) {
1455                                 j++;
1456                                 ib_flow +=
1457                                         ((union ib_flow_spec *)ib_flow)->size;
1458                         }
1459                 }
1460
1461                 ib_flow = flow_attr + 1;
1462                 for (j = 0; j < flow_attr->num_of_specs;
1463                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1464                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1465                                 /* same layer and same type */
1466                                 if (((union ib_flow_spec *)ib_flow)->type ==
1467                                     pdefault_rules->mandatory_not_fields[k])
1468                                         goto out;
1469
1470                 return i;
1471         }
1472 out:
1473         return -1;
1474 }
1475
1476 static int __mlx4_ib_create_default_rules(
1477                 struct mlx4_ib_dev *mdev,
1478                 struct ib_qp *qp,
1479                 const struct default_rules *pdefault_rules,
1480                 struct _rule_hw *mlx4_spec) {
1481         int size = 0;
1482         int i;
1483
1484         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1485                 union ib_flow_spec ib_spec = {};
1486                 int ret;
1487
1488                 switch (pdefault_rules->rules_create_list[i]) {
1489                 case 0:
1490                         /* no rule */
1491                         continue;
1492                 case IB_FLOW_SPEC_IB:
1493                         ib_spec.type = IB_FLOW_SPEC_IB;
1494                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1495
1496                         break;
1497                 default:
1498                         /* invalid rule */
1499                         return -EINVAL;
1500                 }
1501                 /* We must put empty rule, qpn is being ignored */
1502                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1503                                       mlx4_spec);
1504                 if (ret < 0) {
1505                         pr_info("invalid parsing\n");
1506                         return -EINVAL;
1507                 }
1508
1509                 mlx4_spec = (void *)mlx4_spec + ret;
1510                 size += ret;
1511         }
1512         return size;
1513 }
1514
1515 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1516                           int domain,
1517                           enum mlx4_net_trans_promisc_mode flow_type,
1518                           u64 *reg_id)
1519 {
1520         int ret, i;
1521         int size = 0;
1522         void *ib_flow;
1523         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1524         struct mlx4_cmd_mailbox *mailbox;
1525         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1526         int default_flow;
1527
1528         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1529                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1530                 return -EINVAL;
1531         }
1532
1533         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1534                 return -EINVAL;
1535
1536         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1537         if (IS_ERR(mailbox))
1538                 return PTR_ERR(mailbox);
1539         ctrl = mailbox->buf;
1540
1541         ctrl->prio = cpu_to_be16(domain | flow_attr->priority);
1542         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1543         ctrl->port = flow_attr->port;
1544         ctrl->qpn = cpu_to_be32(qp->qp_num);
1545
1546         ib_flow = flow_attr + 1;
1547         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1548         /* Add default flows */
1549         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1550         if (default_flow >= 0) {
1551                 ret = __mlx4_ib_create_default_rules(
1552                                 mdev, qp, default_table + default_flow,
1553                                 mailbox->buf + size);
1554                 if (ret < 0) {
1555                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1556                         return -EINVAL;
1557                 }
1558                 size += ret;
1559         }
1560         for (i = 0; i < flow_attr->num_of_specs; i++) {
1561                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1562                                       mailbox->buf + size);
1563                 if (ret < 0) {
1564                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1565                         return -EINVAL;
1566                 }
1567                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1568                 size += ret;
1569         }
1570
1571         if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1572             flow_attr->num_of_specs == 1) {
1573                 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1574                 enum ib_flow_spec_type header_spec =
1575                         ((union ib_flow_spec *)(flow_attr + 1))->type;
1576
1577                 if (header_spec == IB_FLOW_SPEC_ETH)
1578                         mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1579         }
1580
1581         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1582                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1583                            MLX4_CMD_NATIVE);
1584         if (ret == -ENOMEM)
1585                 pr_err("mcg table is full. Fail to register network rule.\n");
1586         else if (ret == -ENXIO)
1587                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1588         else if (ret)
1589                 pr_err("Invalid argument. Fail to register network rule.\n");
1590
1591         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1592         return ret;
1593 }
1594
1595 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1596 {
1597         int err;
1598         err = mlx4_cmd(dev, reg_id, 0, 0,
1599                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1600                        MLX4_CMD_NATIVE);
1601         if (err)
1602                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1603                        reg_id);
1604         return err;
1605 }
1606
1607 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1608                                     u64 *reg_id)
1609 {
1610         void *ib_flow;
1611         union ib_flow_spec *ib_spec;
1612         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1613         int err = 0;
1614
1615         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1616             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1617                 return 0; /* do nothing */
1618
1619         ib_flow = flow_attr + 1;
1620         ib_spec = (union ib_flow_spec *)ib_flow;
1621
1622         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1623                 return 0; /* do nothing */
1624
1625         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1626                                     flow_attr->port, qp->qp_num,
1627                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1628                                     reg_id);
1629         return err;
1630 }
1631
1632 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1633                                       struct ib_flow_attr *flow_attr,
1634                                       enum mlx4_net_trans_promisc_mode *type)
1635 {
1636         int err = 0;
1637
1638         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1639             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1640             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1641                 return -EOPNOTSUPP;
1642         }
1643
1644         if (flow_attr->num_of_specs == 0) {
1645                 type[0] = MLX4_FS_MC_SNIFFER;
1646                 type[1] = MLX4_FS_UC_SNIFFER;
1647         } else {
1648                 union ib_flow_spec *ib_spec;
1649
1650                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1651                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1652                         return -EINVAL;
1653
1654                 /* if all is zero than MC and UC */
1655                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1656                         type[0] = MLX4_FS_MC_SNIFFER;
1657                         type[1] = MLX4_FS_UC_SNIFFER;
1658                 } else {
1659                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1660                                             ib_spec->eth.mask.dst_mac[1],
1661                                             ib_spec->eth.mask.dst_mac[2],
1662                                             ib_spec->eth.mask.dst_mac[3],
1663                                             ib_spec->eth.mask.dst_mac[4],
1664                                             ib_spec->eth.mask.dst_mac[5]};
1665
1666                         /* Above xor was only on MC bit, non empty mask is valid
1667                          * only if this bit is set and rest are zero.
1668                          */
1669                         if (!is_zero_ether_addr(&mac[0]))
1670                                 return -EINVAL;
1671
1672                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1673                                 type[0] = MLX4_FS_MC_SNIFFER;
1674                         else
1675                                 type[0] = MLX4_FS_UC_SNIFFER;
1676                 }
1677         }
1678
1679         return err;
1680 }
1681
1682 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1683                                            struct ib_flow_attr *flow_attr,
1684                                            struct ib_udata *udata)
1685 {
1686         int err = 0, i = 0, j = 0;
1687         struct mlx4_ib_flow *mflow;
1688         enum mlx4_net_trans_promisc_mode type[2];
1689         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1690         int is_bonded = mlx4_is_bonded(dev);
1691
1692         if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)
1693                 return ERR_PTR(-EOPNOTSUPP);
1694
1695         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1696             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1697                 return ERR_PTR(-EOPNOTSUPP);
1698
1699         if (udata &&
1700             udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen))
1701                 return ERR_PTR(-EOPNOTSUPP);
1702
1703         memset(type, 0, sizeof(type));
1704
1705         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1706         if (!mflow) {
1707                 err = -ENOMEM;
1708                 goto err_free;
1709         }
1710
1711         switch (flow_attr->type) {
1712         case IB_FLOW_ATTR_NORMAL:
1713                 /* If dont trap flag (continue match) is set, under specific
1714                  * condition traffic be replicated to given qp,
1715                  * without stealing it
1716                  */
1717                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1718                         err = mlx4_ib_add_dont_trap_rule(dev,
1719                                                          flow_attr,
1720                                                          type);
1721                         if (err)
1722                                 goto err_free;
1723                 } else {
1724                         type[0] = MLX4_FS_REGULAR;
1725                 }
1726                 break;
1727
1728         case IB_FLOW_ATTR_ALL_DEFAULT:
1729                 type[0] = MLX4_FS_ALL_DEFAULT;
1730                 break;
1731
1732         case IB_FLOW_ATTR_MC_DEFAULT:
1733                 type[0] = MLX4_FS_MC_DEFAULT;
1734                 break;
1735
1736         case IB_FLOW_ATTR_SNIFFER:
1737                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1738                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1739                 break;
1740
1741         default:
1742                 err = -EINVAL;
1743                 goto err_free;
1744         }
1745
1746         while (i < ARRAY_SIZE(type) && type[i]) {
1747                 err = __mlx4_ib_create_flow(qp, flow_attr, MLX4_DOMAIN_UVERBS,
1748                                             type[i], &mflow->reg_id[i].id);
1749                 if (err)
1750                         goto err_create_flow;
1751                 if (is_bonded) {
1752                         /* Application always sees one port so the mirror rule
1753                          * must be on port #2
1754                          */
1755                         flow_attr->port = 2;
1756                         err = __mlx4_ib_create_flow(qp, flow_attr,
1757                                                     MLX4_DOMAIN_UVERBS, type[j],
1758                                                     &mflow->reg_id[j].mirror);
1759                         flow_attr->port = 1;
1760                         if (err)
1761                                 goto err_create_flow;
1762                         j++;
1763                 }
1764
1765                 i++;
1766         }
1767
1768         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1769                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1770                                                &mflow->reg_id[i].id);
1771                 if (err)
1772                         goto err_create_flow;
1773
1774                 if (is_bonded) {
1775                         flow_attr->port = 2;
1776                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1777                                                        &mflow->reg_id[j].mirror);
1778                         flow_attr->port = 1;
1779                         if (err)
1780                                 goto err_create_flow;
1781                         j++;
1782                 }
1783                 /* function to create mirror rule */
1784                 i++;
1785         }
1786
1787         return &mflow->ibflow;
1788
1789 err_create_flow:
1790         while (i) {
1791                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1792                                              mflow->reg_id[i].id);
1793                 i--;
1794         }
1795
1796         while (j) {
1797                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1798                                              mflow->reg_id[j].mirror);
1799                 j--;
1800         }
1801 err_free:
1802         kfree(mflow);
1803         return ERR_PTR(err);
1804 }
1805
1806 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1807 {
1808         int err, ret = 0;
1809         int i = 0;
1810         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1811         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1812
1813         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1814                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1815                 if (err)
1816                         ret = err;
1817                 if (mflow->reg_id[i].mirror) {
1818                         err = __mlx4_ib_destroy_flow(mdev->dev,
1819                                                      mflow->reg_id[i].mirror);
1820                         if (err)
1821                                 ret = err;
1822                 }
1823                 i++;
1824         }
1825
1826         kfree(mflow);
1827         return ret;
1828 }
1829
1830 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1831 {
1832         int err;
1833         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1834         struct mlx4_dev *dev = mdev->dev;
1835         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1836         struct mlx4_ib_steering *ib_steering = NULL;
1837         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1838         struct mlx4_flow_reg_id reg_id;
1839
1840         if (mdev->dev->caps.steering_mode ==
1841             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1842                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1843                 if (!ib_steering)
1844                         return -ENOMEM;
1845         }
1846
1847         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1848                                     !!(mqp->flags &
1849                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1850                                     prot, &reg_id.id);
1851         if (err) {
1852                 pr_err("multicast attach op failed, err %d\n", err);
1853                 goto err_malloc;
1854         }
1855
1856         reg_id.mirror = 0;
1857         if (mlx4_is_bonded(dev)) {
1858                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1859                                             (mqp->port == 1) ? 2 : 1,
1860                                             !!(mqp->flags &
1861                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1862                                             prot, &reg_id.mirror);
1863                 if (err)
1864                         goto err_add;
1865         }
1866
1867         err = add_gid_entry(ibqp, gid);
1868         if (err)
1869                 goto err_add;
1870
1871         if (ib_steering) {
1872                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1873                 ib_steering->reg_id = reg_id;
1874                 mutex_lock(&mqp->mutex);
1875                 list_add(&ib_steering->list, &mqp->steering_rules);
1876                 mutex_unlock(&mqp->mutex);
1877         }
1878         return 0;
1879
1880 err_add:
1881         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1882                               prot, reg_id.id);
1883         if (reg_id.mirror)
1884                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1885                                       prot, reg_id.mirror);
1886 err_malloc:
1887         kfree(ib_steering);
1888
1889         return err;
1890 }
1891
1892 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1893 {
1894         struct mlx4_ib_gid_entry *ge;
1895         struct mlx4_ib_gid_entry *tmp;
1896         struct mlx4_ib_gid_entry *ret = NULL;
1897
1898         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1899                 if (!memcmp(raw, ge->gid.raw, 16)) {
1900                         ret = ge;
1901                         break;
1902                 }
1903         }
1904
1905         return ret;
1906 }
1907
1908 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1909 {
1910         int err;
1911         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1912         struct mlx4_dev *dev = mdev->dev;
1913         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1914         struct net_device *ndev;
1915         struct mlx4_ib_gid_entry *ge;
1916         struct mlx4_flow_reg_id reg_id = {0, 0};
1917         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1918
1919         if (mdev->dev->caps.steering_mode ==
1920             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1921                 struct mlx4_ib_steering *ib_steering;
1922
1923                 mutex_lock(&mqp->mutex);
1924                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1925                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1926                                 list_del(&ib_steering->list);
1927                                 break;
1928                         }
1929                 }
1930                 mutex_unlock(&mqp->mutex);
1931                 if (&ib_steering->list == &mqp->steering_rules) {
1932                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1933                         return -EINVAL;
1934                 }
1935                 reg_id = ib_steering->reg_id;
1936                 kfree(ib_steering);
1937         }
1938
1939         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1940                                     prot, reg_id.id);
1941         if (err)
1942                 return err;
1943
1944         if (mlx4_is_bonded(dev)) {
1945                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1946                                             prot, reg_id.mirror);
1947                 if (err)
1948                         return err;
1949         }
1950
1951         mutex_lock(&mqp->mutex);
1952         ge = find_gid_entry(mqp, gid->raw);
1953         if (ge) {
1954                 spin_lock_bh(&mdev->iboe.lock);
1955                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1956                 dev_hold(ndev);
1957                 spin_unlock_bh(&mdev->iboe.lock);
1958                 dev_put(ndev);
1959                 list_del(&ge->list);
1960                 kfree(ge);
1961         } else
1962                 pr_warn("could not find mgid entry\n");
1963
1964         mutex_unlock(&mqp->mutex);
1965
1966         return 0;
1967 }
1968
1969 static int init_node_data(struct mlx4_ib_dev *dev)
1970 {
1971         struct ib_smp *in_mad  = NULL;
1972         struct ib_smp *out_mad = NULL;
1973         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1974         int err = -ENOMEM;
1975
1976         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1977         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1978         if (!in_mad || !out_mad)
1979                 goto out;
1980
1981         ib_init_query_mad(in_mad);
1982         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1983         if (mlx4_is_master(dev->dev))
1984                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1985
1986         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1987         if (err)
1988                 goto out;
1989
1990         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1991
1992         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1993
1994         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1995         if (err)
1996                 goto out;
1997
1998         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1999         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2000
2001 out:
2002         kfree(in_mad);
2003         kfree(out_mad);
2004         return err;
2005 }
2006
2007 static ssize_t hca_type_show(struct device *device,
2008                              struct device_attribute *attr, char *buf)
2009 {
2010         struct mlx4_ib_dev *dev =
2011                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2012
2013         return sysfs_emit(buf, "MT%d\n", dev->dev->persist->pdev->device);
2014 }
2015 static DEVICE_ATTR_RO(hca_type);
2016
2017 static ssize_t hw_rev_show(struct device *device,
2018                            struct device_attribute *attr, char *buf)
2019 {
2020         struct mlx4_ib_dev *dev =
2021                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2022
2023         return sysfs_emit(buf, "%x\n", dev->dev->rev_id);
2024 }
2025 static DEVICE_ATTR_RO(hw_rev);
2026
2027 static ssize_t board_id_show(struct device *device,
2028                              struct device_attribute *attr, char *buf)
2029 {
2030         struct mlx4_ib_dev *dev =
2031                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2032
2033         return sysfs_emit(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id);
2034 }
2035 static DEVICE_ATTR_RO(board_id);
2036
2037 static struct attribute *mlx4_class_attributes[] = {
2038         &dev_attr_hw_rev.attr,
2039         &dev_attr_hca_type.attr,
2040         &dev_attr_board_id.attr,
2041         NULL
2042 };
2043
2044 static const struct attribute_group mlx4_attr_group = {
2045         .attrs = mlx4_class_attributes,
2046 };
2047
2048 struct diag_counter {
2049         const char *name;
2050         u32 offset;
2051 };
2052
2053 #define DIAG_COUNTER(_name, _offset)                    \
2054         { .name = #_name, .offset = _offset }
2055
2056 static const struct diag_counter diag_basic[] = {
2057         DIAG_COUNTER(rq_num_lle, 0x00),
2058         DIAG_COUNTER(sq_num_lle, 0x04),
2059         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2060         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2061         DIAG_COUNTER(rq_num_lpe, 0x18),
2062         DIAG_COUNTER(sq_num_lpe, 0x1C),
2063         DIAG_COUNTER(rq_num_wrfe, 0x20),
2064         DIAG_COUNTER(sq_num_wrfe, 0x24),
2065         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2066         DIAG_COUNTER(sq_num_bre, 0x34),
2067         DIAG_COUNTER(sq_num_rire, 0x44),
2068         DIAG_COUNTER(rq_num_rire, 0x48),
2069         DIAG_COUNTER(sq_num_rae, 0x4C),
2070         DIAG_COUNTER(rq_num_rae, 0x50),
2071         DIAG_COUNTER(sq_num_roe, 0x54),
2072         DIAG_COUNTER(sq_num_tree, 0x5C),
2073         DIAG_COUNTER(sq_num_rree, 0x64),
2074         DIAG_COUNTER(rq_num_rnr, 0x68),
2075         DIAG_COUNTER(sq_num_rnr, 0x6C),
2076         DIAG_COUNTER(rq_num_oos, 0x100),
2077         DIAG_COUNTER(sq_num_oos, 0x104),
2078 };
2079
2080 static const struct diag_counter diag_ext[] = {
2081         DIAG_COUNTER(rq_num_dup, 0x130),
2082         DIAG_COUNTER(sq_num_to, 0x134),
2083 };
2084
2085 static const struct diag_counter diag_device_only[] = {
2086         DIAG_COUNTER(num_cqovf, 0x1A0),
2087         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2088 };
2089
2090 static struct rdma_hw_stats *
2091 mlx4_ib_alloc_hw_device_stats(struct ib_device *ibdev)
2092 {
2093         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2094         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2095
2096         if (!diag[0].descs)
2097                 return NULL;
2098
2099         return rdma_alloc_hw_stats_struct(diag[0].descs, diag[0].num_counters,
2100                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2101 }
2102
2103 static struct rdma_hw_stats *
2104 mlx4_ib_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num)
2105 {
2106         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2107         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2108
2109         if (!diag[1].descs)
2110                 return NULL;
2111
2112         return rdma_alloc_hw_stats_struct(diag[1].descs, diag[1].num_counters,
2113                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2114 }
2115
2116 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2117                                 struct rdma_hw_stats *stats,
2118                                 u32 port, int index)
2119 {
2120         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2121         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2122         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2123                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2124         int ret;
2125         int i;
2126
2127         ret = mlx4_query_diag_counters(dev->dev,
2128                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2129                                        diag[!!port].offset, hw_value,
2130                                        diag[!!port].num_counters, port);
2131
2132         if (ret)
2133                 return ret;
2134
2135         for (i = 0; i < diag[!!port].num_counters; i++)
2136                 stats->value[i] = hw_value[i];
2137
2138         return diag[!!port].num_counters;
2139 }
2140
2141 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2142                                          struct rdma_stat_desc **pdescs,
2143                                          u32 **offset, u32 *num, bool port)
2144 {
2145         u32 num_counters;
2146
2147         num_counters = ARRAY_SIZE(diag_basic);
2148
2149         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2150                 num_counters += ARRAY_SIZE(diag_ext);
2151
2152         if (!port)
2153                 num_counters += ARRAY_SIZE(diag_device_only);
2154
2155         *pdescs = kcalloc(num_counters, sizeof(struct rdma_stat_desc),
2156                           GFP_KERNEL);
2157         if (!*pdescs)
2158                 return -ENOMEM;
2159
2160         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2161         if (!*offset)
2162                 goto err;
2163
2164         *num = num_counters;
2165
2166         return 0;
2167
2168 err:
2169         kfree(*pdescs);
2170         return -ENOMEM;
2171 }
2172
2173 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2174                                        struct rdma_stat_desc *descs,
2175                                        u32 *offset, bool port)
2176 {
2177         int i;
2178         int j;
2179
2180         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2181                 descs[i].name = diag_basic[i].name;
2182                 offset[i] = diag_basic[i].offset;
2183         }
2184
2185         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2186                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2187                         descs[j].name = diag_ext[i].name;
2188                         offset[j] = diag_ext[i].offset;
2189                 }
2190         }
2191
2192         if (!port) {
2193                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2194                         descs[j].name = diag_device_only[i].name;
2195                         offset[j] = diag_device_only[i].offset;
2196                 }
2197         }
2198 }
2199
2200 static const struct ib_device_ops mlx4_ib_hw_stats_ops = {
2201         .alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats,
2202         .alloc_hw_port_stats = mlx4_ib_alloc_hw_port_stats,
2203         .get_hw_stats = mlx4_ib_get_hw_stats,
2204 };
2205
2206 static const struct ib_device_ops mlx4_ib_hw_stats_ops1 = {
2207         .alloc_hw_device_stats = mlx4_ib_alloc_hw_device_stats,
2208         .get_hw_stats = mlx4_ib_get_hw_stats,
2209 };
2210
2211 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2212 {
2213         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2214         int i;
2215         int ret;
2216         bool per_port = !!(ibdev->dev->caps.flags2 &
2217                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2218
2219         if (mlx4_is_slave(ibdev->dev))
2220                 return 0;
2221
2222         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2223                 /*
2224                  * i == 1 means we are building port counters, set a different
2225                  * stats ops without port stats callback.
2226                  */
2227                 if (i && !per_port) {
2228                         ib_set_device_ops(&ibdev->ib_dev,
2229                                           &mlx4_ib_hw_stats_ops1);
2230
2231                         return 0;
2232                 }
2233
2234                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].descs,
2235                                                     &diag[i].offset,
2236                                                     &diag[i].num_counters, i);
2237                 if (ret)
2238                         goto err_alloc;
2239
2240                 mlx4_ib_fill_diag_counters(ibdev, diag[i].descs,
2241                                            diag[i].offset, i);
2242         }
2243
2244         ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops);
2245
2246         return 0;
2247
2248 err_alloc:
2249         if (i) {
2250                 kfree(diag[i - 1].descs);
2251                 kfree(diag[i - 1].offset);
2252         }
2253
2254         return ret;
2255 }
2256
2257 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2258 {
2259         int i;
2260
2261         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2262                 kfree(ibdev->diag_counters[i].offset);
2263                 kfree(ibdev->diag_counters[i].descs);
2264         }
2265 }
2266
2267 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2268 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2269                                struct net_device *dev,
2270                                int port)
2271 {
2272         u64 new_smac = 0;
2273         u64 release_mac = MLX4_IB_INVALID_MAC;
2274         struct mlx4_ib_qp *qp;
2275
2276         new_smac = ether_addr_to_u64(dev->dev_addr);
2277         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2278
2279         /* no need for update QP1 and mac registration in non-SRIOV */
2280         if (!mlx4_is_mfunc(ibdev->dev))
2281                 return;
2282
2283         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2284         qp = ibdev->qp1_proxy[port - 1];
2285         if (qp) {
2286                 int new_smac_index;
2287                 u64 old_smac;
2288                 struct mlx4_update_qp_params update_params;
2289
2290                 mutex_lock(&qp->mutex);
2291                 old_smac = qp->pri.smac;
2292                 if (new_smac == old_smac)
2293                         goto unlock;
2294
2295                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2296
2297                 if (new_smac_index < 0)
2298                         goto unlock;
2299
2300                 update_params.smac_index = new_smac_index;
2301                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2302                                    &update_params)) {
2303                         release_mac = new_smac;
2304                         goto unlock;
2305                 }
2306                 /* if old port was zero, no mac was yet registered for this QP */
2307                 if (qp->pri.smac_port)
2308                         release_mac = old_smac;
2309                 qp->pri.smac = new_smac;
2310                 qp->pri.smac_port = port;
2311                 qp->pri.smac_index = new_smac_index;
2312         }
2313
2314 unlock:
2315         if (release_mac != MLX4_IB_INVALID_MAC)
2316                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2317         if (qp)
2318                 mutex_unlock(&qp->mutex);
2319         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2320 }
2321
2322 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2323                                  struct net_device *dev,
2324                                  unsigned long event)
2325
2326 {
2327         struct mlx4_ib_iboe *iboe;
2328         int update_qps_port = -1;
2329         int port;
2330
2331         ASSERT_RTNL();
2332
2333         iboe = &ibdev->iboe;
2334
2335         spin_lock_bh(&iboe->lock);
2336         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2337
2338                 iboe->netdevs[port - 1] =
2339                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2340
2341                 if (dev == iboe->netdevs[port - 1] &&
2342                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2343                      event == NETDEV_UP || event == NETDEV_CHANGE))
2344                         update_qps_port = port;
2345
2346                 if (dev == iboe->netdevs[port - 1] &&
2347                     (event == NETDEV_UP || event == NETDEV_DOWN)) {
2348                         enum ib_port_state port_state;
2349                         struct ib_event ibev = { };
2350
2351                         if (ib_get_cached_port_state(&ibdev->ib_dev, port,
2352                                                      &port_state))
2353                                 continue;
2354
2355                         if (event == NETDEV_UP &&
2356                             (port_state != IB_PORT_ACTIVE ||
2357                              iboe->last_port_state[port - 1] != IB_PORT_DOWN))
2358                                 continue;
2359                         if (event == NETDEV_DOWN &&
2360                             (port_state != IB_PORT_DOWN ||
2361                              iboe->last_port_state[port - 1] != IB_PORT_ACTIVE))
2362                                 continue;
2363                         iboe->last_port_state[port - 1] = port_state;
2364
2365                         ibev.device = &ibdev->ib_dev;
2366                         ibev.element.port_num = port;
2367                         ibev.event = event == NETDEV_UP ? IB_EVENT_PORT_ACTIVE :
2368                                                           IB_EVENT_PORT_ERR;
2369                         ib_dispatch_event(&ibev);
2370                 }
2371
2372         }
2373         spin_unlock_bh(&iboe->lock);
2374
2375         if (update_qps_port > 0)
2376                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2377 }
2378
2379 static int mlx4_ib_netdev_event(struct notifier_block *this,
2380                                 unsigned long event, void *ptr)
2381 {
2382         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2383         struct mlx4_ib_dev *ibdev;
2384
2385         if (!net_eq(dev_net(dev), &init_net))
2386                 return NOTIFY_DONE;
2387
2388         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2389         mlx4_ib_scan_netdevs(ibdev, dev, event);
2390
2391         return NOTIFY_DONE;
2392 }
2393
2394 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2395 {
2396         int port;
2397         int slave;
2398         int i;
2399
2400         if (mlx4_is_master(ibdev->dev)) {
2401                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2402                      ++slave) {
2403                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2404                                 for (i = 0;
2405                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2406                                      ++i) {
2407                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2408                                         /* master has the identity virt2phys pkey mapping */
2409                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2410                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2411                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2412                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2413                                 }
2414                         }
2415                 }
2416                 /* initialize pkey cache */
2417                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2418                         for (i = 0;
2419                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2420                              ++i)
2421                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2422                                         (i) ? 0 : 0xFFFF;
2423                 }
2424         }
2425 }
2426
2427 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2428 {
2429         int i, j, eq = 0, total_eqs = 0;
2430
2431         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2432                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2433         if (!ibdev->eq_table)
2434                 return;
2435
2436         for (i = 1; i <= dev->caps.num_ports; i++) {
2437                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2438                      j++, total_eqs++) {
2439                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2440                                 continue;
2441                         ibdev->eq_table[eq] = total_eqs;
2442                         if (!mlx4_assign_eq(dev, i,
2443                                             &ibdev->eq_table[eq]))
2444                                 eq++;
2445                         else
2446                                 ibdev->eq_table[eq] = -1;
2447                 }
2448         }
2449
2450         for (i = eq; i < dev->caps.num_comp_vectors;
2451              ibdev->eq_table[i++] = -1)
2452                 ;
2453
2454         /* Advertise the new number of EQs to clients */
2455         ibdev->ib_dev.num_comp_vectors = eq;
2456 }
2457
2458 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2459 {
2460         int i;
2461         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2462
2463         /* no eqs were allocated */
2464         if (!ibdev->eq_table)
2465                 return;
2466
2467         /* Reset the advertised EQ number */
2468         ibdev->ib_dev.num_comp_vectors = 0;
2469
2470         for (i = 0; i < total_eqs; i++)
2471                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2472
2473         kfree(ibdev->eq_table);
2474         ibdev->eq_table = NULL;
2475 }
2476
2477 static int mlx4_port_immutable(struct ib_device *ibdev, u32 port_num,
2478                                struct ib_port_immutable *immutable)
2479 {
2480         struct ib_port_attr attr;
2481         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2482         int err;
2483
2484         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2485                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2486                 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2487         } else {
2488                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2489                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2490                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2491                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2492                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2493                 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2494                 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2495                     RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2496                         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2497         }
2498
2499         err = ib_query_port(ibdev, port_num, &attr);
2500         if (err)
2501                 return err;
2502
2503         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2504         immutable->gid_tbl_len = attr.gid_tbl_len;
2505
2506         return 0;
2507 }
2508
2509 static void get_fw_ver_str(struct ib_device *device, char *str)
2510 {
2511         struct mlx4_ib_dev *dev =
2512                 container_of(device, struct mlx4_ib_dev, ib_dev);
2513         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
2514                  (int) (dev->dev->caps.fw_ver >> 32),
2515                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2516                  (int) dev->dev->caps.fw_ver & 0xffff);
2517 }
2518
2519 static const struct ib_device_ops mlx4_ib_dev_ops = {
2520         .owner = THIS_MODULE,
2521         .driver_id = RDMA_DRIVER_MLX4,
2522         .uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION,
2523
2524         .add_gid = mlx4_ib_add_gid,
2525         .alloc_mr = mlx4_ib_alloc_mr,
2526         .alloc_pd = mlx4_ib_alloc_pd,
2527         .alloc_ucontext = mlx4_ib_alloc_ucontext,
2528         .attach_mcast = mlx4_ib_mcg_attach,
2529         .create_ah = mlx4_ib_create_ah,
2530         .create_cq = mlx4_ib_create_cq,
2531         .create_qp = mlx4_ib_create_qp,
2532         .create_srq = mlx4_ib_create_srq,
2533         .dealloc_pd = mlx4_ib_dealloc_pd,
2534         .dealloc_ucontext = mlx4_ib_dealloc_ucontext,
2535         .del_gid = mlx4_ib_del_gid,
2536         .dereg_mr = mlx4_ib_dereg_mr,
2537         .destroy_ah = mlx4_ib_destroy_ah,
2538         .destroy_cq = mlx4_ib_destroy_cq,
2539         .destroy_qp = mlx4_ib_destroy_qp,
2540         .destroy_srq = mlx4_ib_destroy_srq,
2541         .detach_mcast = mlx4_ib_mcg_detach,
2542         .device_group = &mlx4_attr_group,
2543         .disassociate_ucontext = mlx4_ib_disassociate_ucontext,
2544         .drain_rq = mlx4_ib_drain_rq,
2545         .drain_sq = mlx4_ib_drain_sq,
2546         .get_dev_fw_str = get_fw_ver_str,
2547         .get_dma_mr = mlx4_ib_get_dma_mr,
2548         .get_link_layer = mlx4_ib_port_link_layer,
2549         .get_netdev = mlx4_ib_get_netdev,
2550         .get_port_immutable = mlx4_port_immutable,
2551         .map_mr_sg = mlx4_ib_map_mr_sg,
2552         .mmap = mlx4_ib_mmap,
2553         .modify_cq = mlx4_ib_modify_cq,
2554         .modify_device = mlx4_ib_modify_device,
2555         .modify_port = mlx4_ib_modify_port,
2556         .modify_qp = mlx4_ib_modify_qp,
2557         .modify_srq = mlx4_ib_modify_srq,
2558         .poll_cq = mlx4_ib_poll_cq,
2559         .post_recv = mlx4_ib_post_recv,
2560         .post_send = mlx4_ib_post_send,
2561         .post_srq_recv = mlx4_ib_post_srq_recv,
2562         .process_mad = mlx4_ib_process_mad,
2563         .query_ah = mlx4_ib_query_ah,
2564         .query_device = mlx4_ib_query_device,
2565         .query_gid = mlx4_ib_query_gid,
2566         .query_pkey = mlx4_ib_query_pkey,
2567         .query_port = mlx4_ib_query_port,
2568         .query_qp = mlx4_ib_query_qp,
2569         .query_srq = mlx4_ib_query_srq,
2570         .reg_user_mr = mlx4_ib_reg_user_mr,
2571         .req_notify_cq = mlx4_ib_arm_cq,
2572         .rereg_user_mr = mlx4_ib_rereg_user_mr,
2573         .resize_cq = mlx4_ib_resize_cq,
2574
2575         INIT_RDMA_OBJ_SIZE(ib_ah, mlx4_ib_ah, ibah),
2576         INIT_RDMA_OBJ_SIZE(ib_cq, mlx4_ib_cq, ibcq),
2577         INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd),
2578         INIT_RDMA_OBJ_SIZE(ib_qp, mlx4_ib_qp, ibqp),
2579         INIT_RDMA_OBJ_SIZE(ib_srq, mlx4_ib_srq, ibsrq),
2580         INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext),
2581 };
2582
2583 static const struct ib_device_ops mlx4_ib_dev_wq_ops = {
2584         .create_rwq_ind_table = mlx4_ib_create_rwq_ind_table,
2585         .create_wq = mlx4_ib_create_wq,
2586         .destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table,
2587         .destroy_wq = mlx4_ib_destroy_wq,
2588         .modify_wq = mlx4_ib_modify_wq,
2589
2590         INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx4_ib_rwq_ind_table,
2591                            ib_rwq_ind_tbl),
2592 };
2593
2594 static const struct ib_device_ops mlx4_ib_dev_mw_ops = {
2595         .alloc_mw = mlx4_ib_alloc_mw,
2596         .dealloc_mw = mlx4_ib_dealloc_mw,
2597
2598         INIT_RDMA_OBJ_SIZE(ib_mw, mlx4_ib_mw, ibmw),
2599 };
2600
2601 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = {
2602         .alloc_xrcd = mlx4_ib_alloc_xrcd,
2603         .dealloc_xrcd = mlx4_ib_dealloc_xrcd,
2604
2605         INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx4_ib_xrcd, ibxrcd),
2606 };
2607
2608 static const struct ib_device_ops mlx4_ib_dev_fs_ops = {
2609         .create_flow = mlx4_ib_create_flow,
2610         .destroy_flow = mlx4_ib_destroy_flow,
2611 };
2612
2613 static void *mlx4_ib_add(struct mlx4_dev *dev)
2614 {
2615         struct mlx4_ib_dev *ibdev;
2616         int num_ports = 0;
2617         int i, j;
2618         int err;
2619         struct mlx4_ib_iboe *iboe;
2620         int ib_num_ports = 0;
2621         int num_req_counters;
2622         int allocated;
2623         u32 counter_index;
2624         struct counter_index *new_counter_index = NULL;
2625
2626         pr_info_once("%s", mlx4_ib_version);
2627
2628         num_ports = 0;
2629         mlx4_foreach_ib_transport_port(i, dev)
2630                 num_ports++;
2631
2632         /* No point in registering a device with no ports... */
2633         if (num_ports == 0)
2634                 return NULL;
2635
2636         ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev);
2637         if (!ibdev) {
2638                 dev_err(&dev->persist->pdev->dev,
2639                         "Device struct alloc failed\n");
2640                 return NULL;
2641         }
2642
2643         iboe = &ibdev->iboe;
2644
2645         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2646                 goto err_dealloc;
2647
2648         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2649                 goto err_pd;
2650
2651         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2652                                  PAGE_SIZE);
2653         if (!ibdev->uar_map)
2654                 goto err_uar;
2655         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2656
2657         ibdev->dev = dev;
2658         ibdev->bond_next_port   = 0;
2659
2660         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2661         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2662         ibdev->num_ports                = num_ports;
2663         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2664                                                 1 : ibdev->num_ports;
2665         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2666         ibdev->ib_dev.dev.parent        = &dev->persist->pdev->dev;
2667
2668         ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops);
2669
2670         if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
2671             ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) ==
2672             IB_LINK_LAYER_ETHERNET) ||
2673             (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) ==
2674             IB_LINK_LAYER_ETHERNET)))
2675                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops);
2676
2677         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2678             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2679                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops);
2680
2681         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2682                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops);
2683         }
2684
2685         if (check_flow_steering_support(dev)) {
2686                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2687                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops);
2688         }
2689
2690         if (!dev->caps.userspace_caps)
2691                 ibdev->ib_dev.ops.uverbs_abi_ver =
2692                         MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2693
2694         mlx4_ib_alloc_eqs(dev, ibdev);
2695
2696         spin_lock_init(&iboe->lock);
2697
2698         if (init_node_data(ibdev))
2699                 goto err_map;
2700         mlx4_init_sl2vl_tbl(ibdev);
2701
2702         for (i = 0; i < ibdev->num_ports; ++i) {
2703                 mutex_init(&ibdev->counters_table[i].mutex);
2704                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2705                 iboe->last_port_state[i] = IB_PORT_DOWN;
2706         }
2707
2708         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2709         for (i = 0; i < num_req_counters; ++i) {
2710                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2711                 allocated = 0;
2712                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2713                                                 IB_LINK_LAYER_ETHERNET) {
2714                         err = mlx4_counter_alloc(ibdev->dev, &counter_index,
2715                                                  MLX4_RES_USAGE_DRIVER);
2716                         /* if failed to allocate a new counter, use default */
2717                         if (err)
2718                                 counter_index =
2719                                         mlx4_get_default_counter_index(dev,
2720                                                                        i + 1);
2721                         else
2722                                 allocated = 1;
2723                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2724                         counter_index = mlx4_get_default_counter_index(dev,
2725                                                                        i + 1);
2726                 }
2727                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2728                                             GFP_KERNEL);
2729                 if (!new_counter_index) {
2730                         if (allocated)
2731                                 mlx4_counter_free(ibdev->dev, counter_index);
2732                         goto err_counter;
2733                 }
2734                 new_counter_index->index = counter_index;
2735                 new_counter_index->allocated = allocated;
2736                 list_add_tail(&new_counter_index->list,
2737                               &ibdev->counters_table[i].counters_list);
2738                 ibdev->counters_table[i].default_counter = counter_index;
2739                 pr_info("counter index %d for port %d allocated %d\n",
2740                         counter_index, i + 1, allocated);
2741         }
2742         if (mlx4_is_bonded(dev))
2743                 for (i = 1; i < ibdev->num_ports ; ++i) {
2744                         new_counter_index =
2745                                         kmalloc(sizeof(struct counter_index),
2746                                                 GFP_KERNEL);
2747                         if (!new_counter_index)
2748                                 goto err_counter;
2749                         new_counter_index->index = counter_index;
2750                         new_counter_index->allocated = 0;
2751                         list_add_tail(&new_counter_index->list,
2752                                       &ibdev->counters_table[i].counters_list);
2753                         ibdev->counters_table[i].default_counter =
2754                                                                 counter_index;
2755                 }
2756
2757         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2758                 ib_num_ports++;
2759
2760         spin_lock_init(&ibdev->sm_lock);
2761         mutex_init(&ibdev->cap_mask_mutex);
2762         INIT_LIST_HEAD(&ibdev->qp_list);
2763         spin_lock_init(&ibdev->reset_flow_resource_lock);
2764
2765         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2766             ib_num_ports) {
2767                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2768                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2769                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2770                                             &ibdev->steer_qpn_base, 0,
2771                                             MLX4_RES_USAGE_DRIVER);
2772                 if (err)
2773                         goto err_counter;
2774
2775                 ibdev->ib_uc_qpns_bitmap = bitmap_alloc(ibdev->steer_qpn_count,
2776                                                         GFP_KERNEL);
2777                 if (!ibdev->ib_uc_qpns_bitmap)
2778                         goto err_steer_qp_release;
2779
2780                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2781                         bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2782                                     ibdev->steer_qpn_count);
2783                         err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2784                                         dev, ibdev->steer_qpn_base,
2785                                         ibdev->steer_qpn_base +
2786                                         ibdev->steer_qpn_count - 1);
2787                         if (err)
2788                                 goto err_steer_free_bitmap;
2789                 } else {
2790                         bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2791                                     ibdev->steer_qpn_count);
2792                 }
2793         }
2794
2795         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2796                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2797
2798         if (mlx4_ib_alloc_diag_counters(ibdev))
2799                 goto err_steer_free_bitmap;
2800
2801         if (ib_register_device(&ibdev->ib_dev, "mlx4_%d",
2802                                &dev->persist->pdev->dev))
2803                 goto err_diag_counters;
2804
2805         if (mlx4_ib_mad_init(ibdev))
2806                 goto err_reg;
2807
2808         if (mlx4_ib_init_sriov(ibdev))
2809                 goto err_mad;
2810
2811         if (!iboe->nb.notifier_call) {
2812                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2813                 err = register_netdevice_notifier(&iboe->nb);
2814                 if (err) {
2815                         iboe->nb.notifier_call = NULL;
2816                         goto err_notif;
2817                 }
2818         }
2819         if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2820                 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2821                 if (err)
2822                         goto err_notif;
2823         }
2824
2825         ibdev->ib_active = true;
2826         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2827                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2828                                          &ibdev->ib_dev);
2829
2830         if (mlx4_is_mfunc(ibdev->dev))
2831                 init_pkeys(ibdev);
2832
2833         /* create paravirt contexts for any VFs which are active */
2834         if (mlx4_is_master(ibdev->dev)) {
2835                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2836                         if (j == mlx4_master_func_num(ibdev->dev))
2837                                 continue;
2838                         if (mlx4_is_slave_active(ibdev->dev, j))
2839                                 do_slave_init(ibdev, j, 1);
2840                 }
2841         }
2842         return ibdev;
2843
2844 err_notif:
2845         if (ibdev->iboe.nb.notifier_call) {
2846                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2847                         pr_warn("failure unregistering notifier\n");
2848                 ibdev->iboe.nb.notifier_call = NULL;
2849         }
2850         flush_workqueue(wq);
2851
2852         mlx4_ib_close_sriov(ibdev);
2853
2854 err_mad:
2855         mlx4_ib_mad_cleanup(ibdev);
2856
2857 err_reg:
2858         ib_unregister_device(&ibdev->ib_dev);
2859
2860 err_diag_counters:
2861         mlx4_ib_diag_cleanup(ibdev);
2862
2863 err_steer_free_bitmap:
2864         bitmap_free(ibdev->ib_uc_qpns_bitmap);
2865
2866 err_steer_qp_release:
2867         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2868                               ibdev->steer_qpn_count);
2869 err_counter:
2870         for (i = 0; i < ibdev->num_ports; ++i)
2871                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2872
2873 err_map:
2874         mlx4_ib_free_eqs(dev, ibdev);
2875         iounmap(ibdev->uar_map);
2876
2877 err_uar:
2878         mlx4_uar_free(dev, &ibdev->priv_uar);
2879
2880 err_pd:
2881         mlx4_pd_free(dev, ibdev->priv_pdn);
2882
2883 err_dealloc:
2884         ib_dealloc_device(&ibdev->ib_dev);
2885
2886         return NULL;
2887 }
2888
2889 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2890 {
2891         int offset;
2892
2893         WARN_ON(!dev->ib_uc_qpns_bitmap);
2894
2895         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2896                                          dev->steer_qpn_count,
2897                                          get_count_order(count));
2898         if (offset < 0)
2899                 return offset;
2900
2901         *qpn = dev->steer_qpn_base + offset;
2902         return 0;
2903 }
2904
2905 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2906 {
2907         if (!qpn ||
2908             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2909                 return;
2910
2911         if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n",
2912                  qpn, dev->steer_qpn_base))
2913                 /* not supposed to be here */
2914                 return;
2915
2916         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2917                               qpn - dev->steer_qpn_base,
2918                               get_count_order(count));
2919 }
2920
2921 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2922                          int is_attach)
2923 {
2924         int err;
2925         size_t flow_size;
2926         struct ib_flow_attr *flow = NULL;
2927         struct ib_flow_spec_ib *ib_spec;
2928
2929         if (is_attach) {
2930                 flow_size = sizeof(struct ib_flow_attr) +
2931                             sizeof(struct ib_flow_spec_ib);
2932                 flow = kzalloc(flow_size, GFP_KERNEL);
2933                 if (!flow)
2934                         return -ENOMEM;
2935                 flow->port = mqp->port;
2936                 flow->num_of_specs = 1;
2937                 flow->size = flow_size;
2938                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2939                 ib_spec->type = IB_FLOW_SPEC_IB;
2940                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2941                 /* Add an empty rule for IB L2 */
2942                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2943
2944                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, MLX4_DOMAIN_NIC,
2945                                             MLX4_FS_REGULAR, &mqp->reg_id);
2946         } else {
2947                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2948         }
2949         kfree(flow);
2950         return err;
2951 }
2952
2953 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2954 {
2955         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2956         int p;
2957         int i;
2958
2959         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2960                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
2961         ibdev->ib_active = false;
2962         flush_workqueue(wq);
2963
2964         if (ibdev->iboe.nb.notifier_call) {
2965                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2966                         pr_warn("failure unregistering notifier\n");
2967                 ibdev->iboe.nb.notifier_call = NULL;
2968         }
2969
2970         mlx4_ib_close_sriov(ibdev);
2971         mlx4_ib_mad_cleanup(ibdev);
2972         ib_unregister_device(&ibdev->ib_dev);
2973         mlx4_ib_diag_cleanup(ibdev);
2974
2975         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2976                               ibdev->steer_qpn_count);
2977         bitmap_free(ibdev->ib_uc_qpns_bitmap);
2978
2979         iounmap(ibdev->uar_map);
2980         for (p = 0; p < ibdev->num_ports; ++p)
2981                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
2982
2983         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2984                 mlx4_CLOSE_PORT(dev, p);
2985
2986         mlx4_ib_free_eqs(dev, ibdev);
2987
2988         mlx4_uar_free(dev, &ibdev->priv_uar);
2989         mlx4_pd_free(dev, ibdev->priv_pdn);
2990         ib_dealloc_device(&ibdev->ib_dev);
2991 }
2992
2993 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2994 {
2995         struct mlx4_ib_demux_work **dm = NULL;
2996         struct mlx4_dev *dev = ibdev->dev;
2997         int i;
2998         unsigned long flags;
2999         struct mlx4_active_ports actv_ports;
3000         unsigned int ports;
3001         unsigned int first_port;
3002
3003         if (!mlx4_is_master(dev))
3004                 return;
3005
3006         actv_ports = mlx4_get_active_ports(dev, slave);
3007         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3008         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3009
3010         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3011         if (!dm)
3012                 return;
3013
3014         for (i = 0; i < ports; i++) {
3015                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3016                 if (!dm[i]) {
3017                         while (--i >= 0)
3018                                 kfree(dm[i]);
3019                         goto out;
3020                 }
3021                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3022                 dm[i]->port = first_port + i + 1;
3023                 dm[i]->slave = slave;
3024                 dm[i]->do_init = do_init;
3025                 dm[i]->dev = ibdev;
3026         }
3027         /* initialize or tear down tunnel QPs for the slave */
3028         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3029         if (!ibdev->sriov.is_going_down) {
3030                 for (i = 0; i < ports; i++)
3031                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3032                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3033         } else {
3034                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3035                 for (i = 0; i < ports; i++)
3036                         kfree(dm[i]);
3037         }
3038 out:
3039         kfree(dm);
3040         return;
3041 }
3042
3043 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3044 {
3045         struct mlx4_ib_qp *mqp;
3046         unsigned long flags_qp;
3047         unsigned long flags_cq;
3048         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3049         struct list_head    cq_notify_list;
3050         struct mlx4_cq *mcq;
3051         unsigned long flags;
3052
3053         pr_warn("mlx4_ib_handle_catas_error was started\n");
3054         INIT_LIST_HEAD(&cq_notify_list);
3055
3056         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3057         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3058
3059         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3060                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3061                 if (mqp->sq.tail != mqp->sq.head) {
3062                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3063                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3064                         if (send_mcq->mcq.comp &&
3065                             mqp->ibqp.send_cq->comp_handler) {
3066                                 if (!send_mcq->mcq.reset_notify_added) {
3067                                         send_mcq->mcq.reset_notify_added = 1;
3068                                         list_add_tail(&send_mcq->mcq.reset_notify,
3069                                                       &cq_notify_list);
3070                                 }
3071                         }
3072                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3073                 }
3074                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3075                 /* Now, handle the QP's receive queue */
3076                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3077                 /* no handling is needed for SRQ */
3078                 if (!mqp->ibqp.srq) {
3079                         if (mqp->rq.tail != mqp->rq.head) {
3080                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3081                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3082                                 if (recv_mcq->mcq.comp &&
3083                                     mqp->ibqp.recv_cq->comp_handler) {
3084                                         if (!recv_mcq->mcq.reset_notify_added) {
3085                                                 recv_mcq->mcq.reset_notify_added = 1;
3086                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3087                                                               &cq_notify_list);
3088                                         }
3089                                 }
3090                                 spin_unlock_irqrestore(&recv_mcq->lock,
3091                                                        flags_cq);
3092                         }
3093                 }
3094                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3095         }
3096
3097         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3098                 mcq->comp(mcq);
3099         }
3100         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3101         pr_warn("mlx4_ib_handle_catas_error ended\n");
3102 }
3103
3104 static void handle_bonded_port_state_event(struct work_struct *work)
3105 {
3106         struct ib_event_work *ew =
3107                 container_of(work, struct ib_event_work, work);
3108         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3109         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3110         int i;
3111         struct ib_event ibev;
3112
3113         kfree(ew);
3114         spin_lock_bh(&ibdev->iboe.lock);
3115         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3116                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3117                 enum ib_port_state curr_port_state;
3118
3119                 if (!curr_netdev)
3120                         continue;
3121
3122                 curr_port_state =
3123                         (netif_running(curr_netdev) &&
3124                          netif_carrier_ok(curr_netdev)) ?
3125                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3126
3127                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3128                         curr_port_state : IB_PORT_ACTIVE;
3129         }
3130         spin_unlock_bh(&ibdev->iboe.lock);
3131
3132         ibev.device = &ibdev->ib_dev;
3133         ibev.element.port_num = 1;
3134         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3135                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3136
3137         ib_dispatch_event(&ibev);
3138 }
3139
3140 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3141 {
3142         u64 sl2vl;
3143         int err;
3144
3145         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3146         if (err) {
3147                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3148                        port, err);
3149                 sl2vl = 0;
3150         }
3151         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3152 }
3153
3154 static void ib_sl2vl_update_work(struct work_struct *work)
3155 {
3156         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3157         struct mlx4_ib_dev *mdev = ew->ib_dev;
3158         int port = ew->port;
3159
3160         mlx4_ib_sl2vl_update(mdev, port);
3161
3162         kfree(ew);
3163 }
3164
3165 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3166                                      int port)
3167 {
3168         struct ib_event_work *ew;
3169
3170         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3171         if (ew) {
3172                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3173                 ew->port = port;
3174                 ew->ib_dev = ibdev;
3175                 queue_work(wq, &ew->work);
3176         }
3177 }
3178
3179 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3180                           enum mlx4_dev_event event, unsigned long param)
3181 {
3182         struct ib_event ibev;
3183         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3184         struct mlx4_eqe *eqe = NULL;
3185         struct ib_event_work *ew;
3186         int p = 0;
3187
3188         if (mlx4_is_bonded(dev) &&
3189             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3190             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3191                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3192                 if (!ew)
3193                         return;
3194                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3195                 ew->ib_dev = ibdev;
3196                 queue_work(wq, &ew->work);
3197                 return;
3198         }
3199
3200         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3201                 eqe = (struct mlx4_eqe *)param;
3202         else
3203                 p = (int) param;
3204
3205         switch (event) {
3206         case MLX4_DEV_EVENT_PORT_UP:
3207                 if (p > ibdev->num_ports)
3208                         return;
3209                 if (!mlx4_is_slave(dev) &&
3210                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3211                         IB_LINK_LAYER_INFINIBAND) {
3212                         if (mlx4_is_master(dev))
3213                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3214                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3215                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3216                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3217                 }
3218                 ibev.event = IB_EVENT_PORT_ACTIVE;
3219                 break;
3220
3221         case MLX4_DEV_EVENT_PORT_DOWN:
3222                 if (p > ibdev->num_ports)
3223                         return;
3224                 ibev.event = IB_EVENT_PORT_ERR;
3225                 break;
3226
3227         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3228                 ibdev->ib_active = false;
3229                 ibev.event = IB_EVENT_DEVICE_FATAL;
3230                 mlx4_ib_handle_catas_error(ibdev);
3231                 break;
3232
3233         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3234                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3235                 if (!ew)
3236                         return;
3237
3238                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3239                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3240                 ew->ib_dev = ibdev;
3241                 /* need to queue only for port owner, which uses GEN_EQE */
3242                 if (mlx4_is_master(dev))
3243                         queue_work(wq, &ew->work);
3244                 else
3245                         handle_port_mgmt_change_event(&ew->work);
3246                 return;
3247
3248         case MLX4_DEV_EVENT_SLAVE_INIT:
3249                 /* here, p is the slave id */
3250                 do_slave_init(ibdev, p, 1);
3251                 if (mlx4_is_master(dev)) {
3252                         int i;
3253
3254                         for (i = 1; i <= ibdev->num_ports; i++) {
3255                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3256                                         == IB_LINK_LAYER_INFINIBAND)
3257                                         mlx4_ib_slave_alias_guid_event(ibdev,
3258                                                                        p, i,
3259                                                                        1);
3260                         }
3261                 }
3262                 return;
3263
3264         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3265                 if (mlx4_is_master(dev)) {
3266                         int i;
3267
3268                         for (i = 1; i <= ibdev->num_ports; i++) {
3269                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3270                                         == IB_LINK_LAYER_INFINIBAND)
3271                                         mlx4_ib_slave_alias_guid_event(ibdev,
3272                                                                        p, i,
3273                                                                        0);
3274                         }
3275                 }
3276                 /* here, p is the slave id */
3277                 do_slave_init(ibdev, p, 0);
3278                 return;
3279
3280         default:
3281                 return;
3282         }
3283
3284         ibev.device           = ibdev_ptr;
3285         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3286
3287         ib_dispatch_event(&ibev);
3288 }
3289
3290 static struct mlx4_interface mlx4_ib_interface = {
3291         .add            = mlx4_ib_add,
3292         .remove         = mlx4_ib_remove,
3293         .event          = mlx4_ib_event,
3294         .protocol       = MLX4_PROT_IB_IPV6,
3295         .flags          = MLX4_INTFF_BONDING
3296 };
3297
3298 static int __init mlx4_ib_init(void)
3299 {
3300         int err;
3301
3302         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3303         if (!wq)
3304                 return -ENOMEM;
3305
3306         err = mlx4_ib_qp_event_init();
3307         if (err)
3308                 goto clean_qp_event;
3309
3310         err = mlx4_ib_cm_init();
3311         if (err)
3312                 goto clean_wq;
3313
3314         err = mlx4_ib_mcg_init();
3315         if (err)
3316                 goto clean_cm;
3317
3318         err = mlx4_register_interface(&mlx4_ib_interface);
3319         if (err)
3320                 goto clean_mcg;
3321
3322         return 0;
3323
3324 clean_mcg:
3325         mlx4_ib_mcg_destroy();
3326
3327 clean_cm:
3328         mlx4_ib_cm_destroy();
3329
3330 clean_wq:
3331         mlx4_ib_qp_event_cleanup();
3332
3333 clean_qp_event:
3334         destroy_workqueue(wq);
3335         return err;
3336 }
3337
3338 static void __exit mlx4_ib_cleanup(void)
3339 {
3340         mlx4_unregister_interface(&mlx4_ib_interface);
3341         mlx4_ib_mcg_destroy();
3342         mlx4_ib_cm_destroy();
3343         mlx4_ib_qp_event_cleanup();
3344         destroy_workqueue(wq);
3345 }
3346
3347 module_init(mlx4_ib_init);
3348 module_exit(mlx4_ib_cleanup);