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 void init_query_mad(struct ib_smp *mad)
  89 {
  90         mad->base_version  = 1;
  91         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  92         mad->class_version = 1;
  93         mad->method        = IB_MGMT_METHOD_GET;
  94 }
  95
  96 static int check_flow_steering_support(struct mlx4_dev *dev)
  97 {
  98         int eth_num_ports = 0;
  99         int ib_num_ports = 0;
 100
 101         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
 102
 103         if (dmfs) {
 104                 int i;
 105                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 106                         eth_num_ports++;
 107                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 108                         ib_num_ports++;
 109                 dmfs &= (!ib_num_ports ||
 110                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 111                         (!eth_num_ports ||
 112                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 113                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 114                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 115                         dmfs = 0;
 116                 }
 117         }
 118         return dmfs;
 119 }
 120
 121 static int num_ib_ports(struct mlx4_dev *dev)
 122 {
 123         int ib_ports = 0;
 124         int i;
 125
 126         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 127                 ib_ports++;
 128
 129         return ib_ports;
 130 }
 131
 132 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device,
 133                                              u32 port_num)
 134 {
 135         struct mlx4_ib_dev *ibdev = to_mdev(device);
 136         struct net_device *dev;
 137
 138         rcu_read_lock();
 139         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 140
 141         if (dev) {
 142                 if (mlx4_is_bonded(ibdev->dev)) {
 143                         struct net_device *upper = NULL;
 144
 145                         upper = netdev_master_upper_dev_get_rcu(dev);
 146                         if (upper) {
 147                                 struct net_device *active;
 148
 149                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 150                                 if (active)
 151                                         dev = active;
 152                         }
 153                 }
 154         }
 155         if (dev)
 156                 dev_hold(dev);
 157
 158         rcu_read_unlock();
 159         return dev;
 160 }
 161
 162 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 163                                   struct mlx4_ib_dev *ibdev,
 164                                   u32 port_num)
 165 {
 166         struct mlx4_cmd_mailbox *mailbox;
 167         int err;
 168         struct mlx4_dev *dev = ibdev->dev;
 169         int i;
 170         union ib_gid *gid_tbl;
 171
 172         mailbox = mlx4_alloc_cmd_mailbox(dev);
 173         if (IS_ERR(mailbox))
 174                 return -ENOMEM;
 175
 176         gid_tbl = mailbox->buf;
 177
 178         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 179                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 180
 181         err = mlx4_cmd(dev, mailbox->dma,
 182                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 183                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 184                        MLX4_CMD_WRAPPED);
 185         if (mlx4_is_bonded(dev))
 186                 err += mlx4_cmd(dev, mailbox->dma,
 187                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 188                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 189                                 MLX4_CMD_WRAPPED);
 190
 191         mlx4_free_cmd_mailbox(dev, mailbox);
 192         return err;
 193 }
 194
 195 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 196                                      struct mlx4_ib_dev *ibdev,
 197                                      u32 port_num)
 198 {
 199         struct mlx4_cmd_mailbox *mailbox;
 200         int err;
 201         struct mlx4_dev *dev = ibdev->dev;
 202         int i;
 203         struct {
 204                 union ib_gid    gid;
 205                 __be32          rsrvd1[2];
 206                 __be16          rsrvd2;
 207                 u8              type;
 208                 u8              version;
 209                 __be32          rsrvd3;
 210         } *gid_tbl;
 211
 212         mailbox = mlx4_alloc_cmd_mailbox(dev);
 213         if (IS_ERR(mailbox))
 214                 return -ENOMEM;
 215
 216         gid_tbl = mailbox->buf;
 217         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 218                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 219                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 220                         gid_tbl[i].version = 2;
 221                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 222                                 gid_tbl[i].type = 1;
 223                 }
 224         }
 225
 226         err = mlx4_cmd(dev, mailbox->dma,
 227                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 228                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 229                        MLX4_CMD_WRAPPED);
 230         if (mlx4_is_bonded(dev))
 231                 err += mlx4_cmd(dev, mailbox->dma,
 232                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 233                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 234                                 MLX4_CMD_WRAPPED);
 235
 236         mlx4_free_cmd_mailbox(dev, mailbox);
 237         return err;
 238 }
 239
 240 static int mlx4_ib_update_gids(struct gid_entry *gids,
 241                                struct mlx4_ib_dev *ibdev,
 242                                u32 port_num)
 243 {
 244         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 245                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 246
 247         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 248 }
 249
 250 static void free_gid_entry(struct gid_entry *entry)
 251 {
 252         memset(&entry->gid, 0, sizeof(entry->gid));
 253         kfree(entry->ctx);
 254         entry->ctx = NULL;
 255 }
 256
 257 static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context)
 258 {
 259         struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
 260         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 261         struct mlx4_port_gid_table   *port_gid_table;
 262         int free = -1, found = -1;
 263         int ret = 0;
 264         int hw_update = 0;
 265         int i;
 266         struct gid_entry *gids = NULL;
 267         u16 vlan_id = 0xffff;
 268         u8 mac[ETH_ALEN];
 269
 270         if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
 271                 return -EINVAL;
 272
 273         if (attr->port_num > MLX4_MAX_PORTS)
 274                 return -EINVAL;
 275
 276         if (!context)
 277                 return -EINVAL;
 278
 279         ret = rdma_read_gid_l2_fields(attr, &vlan_id, &mac[0]);
 280         if (ret)
 281                 return ret;
 282         port_gid_table = &iboe->gids[attr->port_num - 1];
 283         spin_lock_bh(&iboe->lock);
 284         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 285                 if (!memcmp(&port_gid_table->gids[i].gid,
 286                             &attr->gid, sizeof(attr->gid)) &&
 287                     port_gid_table->gids[i].gid_type == attr->gid_type &&
 288                     port_gid_table->gids[i].vlan_id == vlan_id)  {
 289                         found = i;
 290                         break;
 291                 }
 292                 if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid))
 293                         free = i; /* HW has space */
 294         }
 295
 296         if (found < 0) {
 297                 if (free < 0) {
 298                         ret = -ENOSPC;
 299                 } else {
 300                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 301                         if (!port_gid_table->gids[free].ctx) {
 302                                 ret = -ENOMEM;
 303                         } else {
 304                                 *context = port_gid_table->gids[free].ctx;
 305                                 memcpy(&port_gid_table->gids[free].gid,
 306                                        &attr->gid, sizeof(attr->gid));
 307                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 308                                 port_gid_table->gids[free].vlan_id = vlan_id;
 309                                 port_gid_table->gids[free].ctx->real_index = free;
 310                                 port_gid_table->gids[free].ctx->refcount = 1;
 311                                 hw_update = 1;
 312                         }
 313                 }
 314         } else {
 315                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 316                 *context = ctx;
 317                 ctx->refcount++;
 318         }
 319         if (!ret && hw_update) {
 320                 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
 321                                      GFP_ATOMIC);
 322                 if (!gids) {
 323                         ret = -ENOMEM;
 324                         *context = NULL;
 325                         free_gid_entry(&port_gid_table->gids[free]);
 326                 } else {
 327                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 328                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 329                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 330                         }
 331                 }
 332         }
 333         spin_unlock_bh(&iboe->lock);
 334
 335         if (!ret && hw_update) {
 336                 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
 337                 if (ret) {
 338                         spin_lock_bh(&iboe->lock);
 339                         *context = NULL;
 340                         free_gid_entry(&port_gid_table->gids[free]);
 341                         spin_unlock_bh(&iboe->lock);
 342                 }
 343                 kfree(gids);
 344         }
 345
 346         return ret;
 347 }
 348
 349 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context)
 350 {
 351         struct gid_cache_context *ctx = *context;
 352         struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
 353         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 354         struct mlx4_port_gid_table   *port_gid_table;
 355         int ret = 0;
 356         int hw_update = 0;
 357         struct gid_entry *gids = NULL;
 358
 359         if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
 360                 return -EINVAL;
 361
 362         if (attr->port_num > MLX4_MAX_PORTS)
 363                 return -EINVAL;
 364
 365         port_gid_table = &iboe->gids[attr->port_num - 1];
 366         spin_lock_bh(&iboe->lock);
 367         if (ctx) {
 368                 ctx->refcount--;
 369                 if (!ctx->refcount) {
 370                         unsigned int real_index = ctx->real_index;
 371
 372                         free_gid_entry(&port_gid_table->gids[real_index]);
 373                         hw_update = 1;
 374                 }
 375         }
 376         if (!ret && hw_update) {
 377                 int i;
 378
 379                 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
 380                                      GFP_ATOMIC);
 381                 if (!gids) {
 382                         ret = -ENOMEM;
 383                 } else {
 384                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 385                                 memcpy(&gids[i].gid,
 386                                        &port_gid_table->gids[i].gid,
 387                                        sizeof(union ib_gid));
 388                                 gids[i].gid_type =
 389                                     port_gid_table->gids[i].gid_type;
 390                         }
 391                 }
 392         }
 393         spin_unlock_bh(&iboe->lock);
 394
 395         if (!ret && hw_update) {
 396                 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
 397                 kfree(gids);
 398         }
 399         return ret;
 400 }
 401
 402 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 403                                     const struct ib_gid_attr *attr)
 404 {
 405         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 406         struct gid_cache_context *ctx = NULL;
 407         struct mlx4_port_gid_table   *port_gid_table;
 408         int real_index = -EINVAL;
 409         int i;
 410         unsigned long flags;
 411         u32 port_num = attr->port_num;
 412
 413         if (port_num > MLX4_MAX_PORTS)
 414                 return -EINVAL;
 415
 416         if (mlx4_is_bonded(ibdev->dev))
 417                 port_num = 1;
 418
 419         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 420                 return attr->index;
 421
 422         spin_lock_irqsave(&iboe->lock, flags);
 423         port_gid_table = &iboe->gids[port_num - 1];
 424
 425         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 426                 if (!memcmp(&port_gid_table->gids[i].gid,
 427                             &attr->gid, sizeof(attr->gid)) &&
 428                     attr->gid_type == port_gid_table->gids[i].gid_type) {
 429                         ctx = port_gid_table->gids[i].ctx;
 430                         break;
 431                 }
 432         if (ctx)
 433                 real_index = ctx->real_index;
 434         spin_unlock_irqrestore(&iboe->lock, flags);
 435         return real_index;
 436 }
 437
 438 static int mlx4_ib_query_device(struct ib_device *ibdev,
 439                                 struct ib_device_attr *props,
 440                                 struct ib_udata *uhw)
 441 {
 442         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 443         struct ib_smp *in_mad  = NULL;
 444         struct ib_smp *out_mad = NULL;
 445         int err;
 446         int have_ib_ports;
 447         struct mlx4_uverbs_ex_query_device cmd;
 448         struct mlx4_uverbs_ex_query_device_resp resp = {};
 449         struct mlx4_clock_params clock_params;
 450
 451         if (uhw->inlen) {
 452                 if (uhw->inlen < sizeof(cmd))
 453                         return -EINVAL;
 454
 455                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 456                 if (err)
 457                         return err;
 458
 459                 if (cmd.comp_mask)
 460                         return -EINVAL;
 461
 462                 if (cmd.reserved)
 463                         return -EINVAL;
 464         }
 465
 466         resp.response_length = offsetof(typeof(resp), response_length) +
 467                 sizeof(resp.response_length);
 468         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 469         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 470         err = -ENOMEM;
 471         if (!in_mad || !out_mad)
 472                 goto out;
 473
 474         init_query_mad(in_mad);
 475         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 476
 477         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 478                            1, NULL, NULL, in_mad, out_mad);
 479         if (err)
 480                 goto out;
 481
 482         memset(props, 0, sizeof *props);
 483
 484         have_ib_ports = num_ib_ports(dev->dev);
 485
 486         props->fw_ver = dev->dev->caps.fw_ver;
 487         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 488                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 489                 IB_DEVICE_SYS_IMAGE_GUID                |
 490                 IB_DEVICE_RC_RNR_NAK_GEN                |
 491                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 492         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 493                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 494         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 495                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 496         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 497                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 498         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 499                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 500         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 501                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 502         if (dev->dev->caps.max_gso_sz &&
 503             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 504             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 505                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 506         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 507                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 508         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 509             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 510             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 511                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 512         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 513                 props->device_cap_flags |= IB_DEVICE_XRC;
 514         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 515                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 516         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 517                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 518                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 519                 else
 520                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 521         }
 522         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 523                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 524
 525         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 526
 527         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 528                 0xffffff;
 529         props->vendor_part_id      = dev->dev->persist->pdev->device;
 530         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 531         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 532
 533         props->max_mr_size         = ~0ull;
 534         props->page_size_cap       = dev->dev->caps.page_size_cap;
 535         props->max_qp              = dev->dev->quotas.qp;
 536         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 537         props->max_send_sge =
 538                 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
 539         props->max_recv_sge =
 540                 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
 541         props->max_sge_rd = MLX4_MAX_SGE_RD;
 542         props->max_cq              = dev->dev->quotas.cq;
 543         props->max_cqe             = dev->dev->caps.max_cqes;
 544         props->max_mr              = dev->dev->quotas.mpt;
 545         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 546         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 547         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 548         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 549         props->max_srq             = dev->dev->quotas.srq;
 550         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 551         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 552         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 553         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 554         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 555                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 556         props->masked_atomic_cap   = props->atomic_cap;
 557         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 558         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 559         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 560         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 561                                            props->max_mcast_grp;
 562         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 563         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 564         props->max_ah = INT_MAX;
 565
 566         if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
 567             mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) {
 568                 if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) {
 569                         props->rss_caps.max_rwq_indirection_tables =
 570                                 props->max_qp;
 571                         props->rss_caps.max_rwq_indirection_table_size =
 572                                 dev->dev->caps.max_rss_tbl_sz;
 573                         props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
 574                         props->max_wq_type_rq = props->max_qp;
 575                 }
 576
 577                 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
 578                         props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
 579         }
 580
 581         props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
 582         props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
 583
 584         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 585                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 586                 if (!mlx4_get_internal_clock_params(dev->dev, &clock_params)) {
 587                         resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET;
 588                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 589                 }
 590         }
 591
 592         if (uhw->outlen >= resp.response_length +
 593             sizeof(resp.max_inl_recv_sz)) {
 594                 resp.response_length += sizeof(resp.max_inl_recv_sz);
 595                 resp.max_inl_recv_sz  = dev->dev->caps.max_rq_sg *
 596                         sizeof(struct mlx4_wqe_data_seg);
 597         }
 598
 599         if (offsetofend(typeof(resp), rss_caps) <= uhw->outlen) {
 600                 if (props->rss_caps.supported_qpts) {
 601                         resp.rss_caps.rx_hash_function =
 602                                 MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
 603
 604                         resp.rss_caps.rx_hash_fields_mask =
 605                                 MLX4_IB_RX_HASH_SRC_IPV4 |
 606                                 MLX4_IB_RX_HASH_DST_IPV4 |
 607                                 MLX4_IB_RX_HASH_SRC_IPV6 |
 608                                 MLX4_IB_RX_HASH_DST_IPV6 |
 609                                 MLX4_IB_RX_HASH_SRC_PORT_TCP |
 610                                 MLX4_IB_RX_HASH_DST_PORT_TCP |
 611                                 MLX4_IB_RX_HASH_SRC_PORT_UDP |
 612                                 MLX4_IB_RX_HASH_DST_PORT_UDP;
 613
 614                         if (dev->dev->caps.tunnel_offload_mode ==
 615                             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
 616                                 resp.rss_caps.rx_hash_fields_mask |=
 617                                         MLX4_IB_RX_HASH_INNER;
 618                 }
 619                 resp.response_length = offsetof(typeof(resp), rss_caps) +
 620                                        sizeof(resp.rss_caps);
 621         }
 622
 623         if (offsetofend(typeof(resp), tso_caps) <= uhw->outlen) {
 624                 if (dev->dev->caps.max_gso_sz &&
 625                     ((mlx4_ib_port_link_layer(ibdev, 1) ==
 626                     IB_LINK_LAYER_ETHERNET) ||
 627                     (mlx4_ib_port_link_layer(ibdev, 2) ==
 628                     IB_LINK_LAYER_ETHERNET))) {
 629                         resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz;
 630                         resp.tso_caps.supported_qpts |=
 631                                 1 << IB_QPT_RAW_PACKET;
 632                 }
 633                 resp.response_length = offsetof(typeof(resp), tso_caps) +
 634                                        sizeof(resp.tso_caps);
 635         }
 636
 637         if (uhw->outlen) {
 638                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 639                 if (err)
 640                         goto out;
 641         }
 642 out:
 643         kfree(in_mad);
 644         kfree(out_mad);
 645
 646         return err;
 647 }
 648
 649 static enum rdma_link_layer
 650 mlx4_ib_port_link_layer(struct ib_device *device, u32 port_num)
 651 {
 652         struct mlx4_dev *dev = to_mdev(device)->dev;
 653
 654         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 655                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 656 }
 657
 658 static int ib_link_query_port(struct ib_device *ibdev, u32 port,
 659                               struct ib_port_attr *props, int netw_view)
 660 {
 661         struct ib_smp *in_mad  = NULL;
 662         struct ib_smp *out_mad = NULL;
 663         int ext_active_speed;
 664         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 665         int err = -ENOMEM;
 666
 667         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 668         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 669         if (!in_mad || !out_mad)
 670                 goto out;
 671
 672         init_query_mad(in_mad);
 673         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 674         in_mad->attr_mod = cpu_to_be32(port);
 675
 676         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 677                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 678
 679         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 680                                 in_mad, out_mad);
 681         if (err)
 682                 goto out;
 683
 684
 685         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 686         props->lmc              = out_mad->data[34] & 0x7;
 687         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 688         props->sm_sl            = out_mad->data[36] & 0xf;
 689         props->state            = out_mad->data[32] & 0xf;
 690         props->phys_state       = out_mad->data[33] >> 4;
 691         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 692         if (netw_view)
 693                 props->gid_tbl_len = out_mad->data[50];
 694         else
 695                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 696         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 697         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 698         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 699         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 700         props->active_width     = out_mad->data[31] & 0xf;
 701         props->active_speed     = out_mad->data[35] >> 4;
 702         props->max_mtu          = out_mad->data[41] & 0xf;
 703         props->active_mtu       = out_mad->data[36] >> 4;
 704         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 705         props->max_vl_num       = out_mad->data[37] >> 4;
 706         props->init_type_reply  = out_mad->data[41] >> 4;
 707
 708         /* Check if extended speeds (EDR/FDR/...) are supported */
 709         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 710                 ext_active_speed = out_mad->data[62] >> 4;
 711
 712                 switch (ext_active_speed) {
 713                 case 1:
 714                         props->active_speed = IB_SPEED_FDR;
 715                         break;
 716                 case 2:
 717                         props->active_speed = IB_SPEED_EDR;
 718                         break;
 719                 }
 720         }
 721
 722         /* If reported active speed is QDR, check if is FDR-10 */
 723         if (props->active_speed == IB_SPEED_QDR) {
 724                 init_query_mad(in_mad);
 725                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 726                 in_mad->attr_mod = cpu_to_be32(port);
 727
 728                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 729                                    NULL, NULL, in_mad, out_mad);
 730                 if (err)
 731                         goto out;
 732
 733                 /* Checking LinkSpeedActive for FDR-10 */
 734                 if (out_mad->data[15] & 0x1)
 735                         props->active_speed = IB_SPEED_FDR10;
 736         }
 737
 738         /* Avoid wrong speed value returned by FW if the IB link is down. */
 739         if (props->state == IB_PORT_DOWN)
 740                  props->active_speed = IB_SPEED_SDR;
 741
 742 out:
 743         kfree(in_mad);
 744         kfree(out_mad);
 745         return err;
 746 }
 747
 748 static u8 state_to_phys_state(enum ib_port_state state)
 749 {
 750         return state == IB_PORT_ACTIVE ?
 751                 IB_PORT_PHYS_STATE_LINK_UP : IB_PORT_PHYS_STATE_DISABLED;
 752 }
 753
 754 static int eth_link_query_port(struct ib_device *ibdev, u32 port,
 755                                struct ib_port_attr *props)
 756 {
 757
 758         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 759         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 760         struct net_device *ndev;
 761         enum ib_mtu tmp;
 762         struct mlx4_cmd_mailbox *mailbox;
 763         int err = 0;
 764         int is_bonded = mlx4_is_bonded(mdev->dev);
 765
 766         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 767         if (IS_ERR(mailbox))
 768                 return PTR_ERR(mailbox);
 769
 770         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 771                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 772                            MLX4_CMD_WRAPPED);
 773         if (err)
 774                 goto out;
 775
 776         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ||
 777                                    (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 778                                            IB_WIDTH_4X : IB_WIDTH_1X;
 779         props->active_speed     =  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 780                                            IB_SPEED_FDR : IB_SPEED_QDR;
 781         props->port_cap_flags   = IB_PORT_CM_SUP;
 782         props->ip_gids = true;
 783         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 784         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 785         if (mdev->dev->caps.pkey_table_len[port])
 786                 props->pkey_tbl_len = 1;
 787         props->max_mtu          = IB_MTU_4096;
 788         props->max_vl_num       = 2;
 789         props->state            = IB_PORT_DOWN;
 790         props->phys_state       = state_to_phys_state(props->state);
 791         props->active_mtu       = IB_MTU_256;
 792         spin_lock_bh(&iboe->lock);
 793         ndev = iboe->netdevs[port - 1];
 794         if (ndev && is_bonded) {
 795                 rcu_read_lock(); /* required to get upper dev */
 796                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 797                 rcu_read_unlock();
 798         }
 799         if (!ndev)
 800                 goto out_unlock;
 801
 802         tmp = iboe_get_mtu(ndev->mtu);
 803         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 804
 805         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 806                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 807         props->phys_state       = state_to_phys_state(props->state);
 808 out_unlock:
 809         spin_unlock_bh(&iboe->lock);
 810 out:
 811         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 812         return err;
 813 }
 814
 815 int __mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
 816                          struct ib_port_attr *props, int netw_view)
 817 {
 818         int err;
 819
 820         /* props being zeroed by the caller, avoid zeroing it here */
 821
 822         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 823                 ib_link_query_port(ibdev, port, props, netw_view) :
 824                                 eth_link_query_port(ibdev, port, props);
 825
 826         return err;
 827 }
 828
 829 static int mlx4_ib_query_port(struct ib_device *ibdev, u32 port,
 830                               struct ib_port_attr *props)
 831 {
 832         /* returns host view */
 833         return __mlx4_ib_query_port(ibdev, port, props, 0);
 834 }
 835
 836 int __mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
 837                         union ib_gid *gid, int netw_view)
 838 {
 839         struct ib_smp *in_mad  = NULL;
 840         struct ib_smp *out_mad = NULL;
 841         int err = -ENOMEM;
 842         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 843         int clear = 0;
 844         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 845
 846         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 847         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 848         if (!in_mad || !out_mad)
 849                 goto out;
 850
 851         init_query_mad(in_mad);
 852         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 853         in_mad->attr_mod = cpu_to_be32(port);
 854
 855         if (mlx4_is_mfunc(dev->dev) && netw_view)
 856                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 857
 858         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 859         if (err)
 860                 goto out;
 861
 862         memcpy(gid->raw, out_mad->data + 8, 8);
 863
 864         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 865                 if (index) {
 866                         /* For any index > 0, return the null guid */
 867                         err = 0;
 868                         clear = 1;
 869                         goto out;
 870                 }
 871         }
 872
 873         init_query_mad(in_mad);
 874         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 875         in_mad->attr_mod = cpu_to_be32(index / 8);
 876
 877         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 878                            NULL, NULL, in_mad, out_mad);
 879         if (err)
 880                 goto out;
 881
 882         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 883
 884 out:
 885         if (clear)
 886                 memset(gid->raw + 8, 0, 8);
 887         kfree(in_mad);
 888         kfree(out_mad);
 889         return err;
 890 }
 891
 892 static int mlx4_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
 893                              union ib_gid *gid)
 894 {
 895         if (rdma_protocol_ib(ibdev, port))
 896                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 897         return 0;
 898 }
 899
 900 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u32 port,
 901                                u64 *sl2vl_tbl)
 902 {
 903         union sl2vl_tbl_to_u64 sl2vl64;
 904         struct ib_smp *in_mad  = NULL;
 905         struct ib_smp *out_mad = NULL;
 906         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 907         int err = -ENOMEM;
 908         int jj;
 909
 910         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 911                 *sl2vl_tbl = 0;
 912                 return 0;
 913         }
 914
 915         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 916         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 917         if (!in_mad || !out_mad)
 918                 goto out;
 919
 920         init_query_mad(in_mad);
 921         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 922         in_mad->attr_mod = 0;
 923
 924         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 925                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 926
 927         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 928                            in_mad, out_mad);
 929         if (err)
 930                 goto out;
 931
 932         for (jj = 0; jj < 8; jj++)
 933                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 934         *sl2vl_tbl = sl2vl64.sl64;
 935
 936 out:
 937         kfree(in_mad);
 938         kfree(out_mad);
 939         return err;
 940 }
 941
 942 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 943 {
 944         u64 sl2vl;
 945         int i;
 946         int err;
 947
 948         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 949                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 950                         continue;
 951                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 952                 if (err) {
 953                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 954                                i, err);
 955                         sl2vl = 0;
 956                 }
 957                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 958         }
 959 }
 960
 961 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
 962                          u16 *pkey, int netw_view)
 963 {
 964         struct ib_smp *in_mad  = NULL;
 965         struct ib_smp *out_mad = NULL;
 966         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 967         int err = -ENOMEM;
 968
 969         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 970         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 971         if (!in_mad || !out_mad)
 972                 goto out;
 973
 974         init_query_mad(in_mad);
 975         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 976         in_mad->attr_mod = cpu_to_be32(index / 32);
 977
 978         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 979                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 980
 981         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 982                            in_mad, out_mad);
 983         if (err)
 984                 goto out;
 985
 986         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 987
 988 out:
 989         kfree(in_mad);
 990         kfree(out_mad);
 991         return err;
 992 }
 993
 994 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
 995                               u16 *pkey)
 996 {
 997         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 998 }
 999
1000 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
1001                                  struct ib_device_modify *props)
1002 {
1003         struct mlx4_cmd_mailbox *mailbox;
1004         unsigned long flags;
1005
1006         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
1007                 return -EOPNOTSUPP;
1008
1009         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1010                 return 0;
1011
1012         if (mlx4_is_slave(to_mdev(ibdev)->dev))
1013                 return -EOPNOTSUPP;
1014
1015         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
1016         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1017         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
1018
1019         /*
1020          * If possible, pass node desc to FW, so it can generate
1021          * a 144 trap.  If cmd fails, just ignore.
1022          */
1023         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
1024         if (IS_ERR(mailbox))
1025                 return 0;
1026
1027         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1028         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
1029                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1030
1031         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
1032
1033         return 0;
1034 }
1035
1036 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u32 port,
1037                             int reset_qkey_viols, u32 cap_mask)
1038 {
1039         struct mlx4_cmd_mailbox *mailbox;
1040         int err;
1041
1042         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
1043         if (IS_ERR(mailbox))
1044                 return PTR_ERR(mailbox);
1045
1046         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1047                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
1048                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
1049         } else {
1050                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
1051                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
1052         }
1053
1054         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
1055                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1056                        MLX4_CMD_WRAPPED);
1057
1058         mlx4_free_cmd_mailbox(dev->dev, mailbox);
1059         return err;
1060 }
1061
1062 static int mlx4_ib_modify_port(struct ib_device *ibdev, u32 port, int mask,
1063                                struct ib_port_modify *props)
1064 {
1065         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1066         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1067         struct ib_port_attr attr;
1068         u32 cap_mask;
1069         int err;
1070
1071         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1072          * of whether port link layer is ETH or IB. For ETH ports, qkey
1073          * violations and port capabilities are not meaningful.
1074          */
1075         if (is_eth)
1076                 return 0;
1077
1078         mutex_lock(&mdev->cap_mask_mutex);
1079
1080         err = ib_query_port(ibdev, port, &attr);
1081         if (err)
1082                 goto out;
1083
1084         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1085                 ~props->clr_port_cap_mask;
1086
1087         err = mlx4_ib_SET_PORT(mdev, port,
1088                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1089                                cap_mask);
1090
1091 out:
1092         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1093         return err;
1094 }
1095
1096 static int mlx4_ib_alloc_ucontext(struct ib_ucontext *uctx,
1097                                   struct ib_udata *udata)
1098 {
1099         struct ib_device *ibdev = uctx->device;
1100         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1101         struct mlx4_ib_ucontext *context = to_mucontext(uctx);
1102         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1103         struct mlx4_ib_alloc_ucontext_resp resp;
1104         int err;
1105
1106         if (!dev->ib_active)
1107                 return -EAGAIN;
1108
1109         if (ibdev->ops.uverbs_abi_ver ==
1110             MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1111                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1112                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1113                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1114         } else {
1115                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1116                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1117                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1118                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1119                 resp.cqe_size         = dev->dev->caps.cqe_size;
1120         }
1121
1122         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1123         if (err)
1124                 return err;
1125
1126         INIT_LIST_HEAD(&context->db_page_list);
1127         mutex_init(&context->db_page_mutex);
1128
1129         INIT_LIST_HEAD(&context->wqn_ranges_list);
1130         mutex_init(&context->wqn_ranges_mutex);
1131
1132         if (ibdev->ops.uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1133                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1134         else
1135                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1136
1137         if (err) {
1138                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1139                 return -EFAULT;
1140         }
1141
1142         return err;
1143 }
1144
1145 static void mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1146 {
1147         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1148
1149         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1150 }
1151
1152 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1153 {
1154 }
1155
1156 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1157 {
1158         struct mlx4_ib_dev *dev = to_mdev(context->device);
1159
1160         switch (vma->vm_pgoff) {
1161         case 0:
1162                 return rdma_user_mmap_io(context, vma,
1163                                          to_mucontext(context)->uar.pfn,
1164                                          PAGE_SIZE,
1165                                          pgprot_noncached(vma->vm_page_prot),
1166                                          NULL);
1167
1168         case 1:
1169                 if (dev->dev->caps.bf_reg_size == 0)
1170                         return -EINVAL;
1171                 return rdma_user_mmap_io(
1172                         context, vma,
1173                         to_mucontext(context)->uar.pfn +
1174                                 dev->dev->caps.num_uars,
1175                         PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot),
1176                         NULL);
1177
1178         case 3: {
1179                 struct mlx4_clock_params params;
1180                 int ret;
1181
1182                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1183                 if (ret)
1184                         return ret;
1185
1186                 return rdma_user_mmap_io(
1187                         context, vma,
1188                         (pci_resource_start(dev->dev->persist->pdev,
1189                                             params.bar) +
1190                          params.offset) >>
1191                                 PAGE_SHIFT,
1192                         PAGE_SIZE, pgprot_noncached(vma->vm_page_prot),
1193                         NULL);
1194         }
1195
1196         default:
1197                 return -EINVAL;
1198         }
1199 }
1200
1201 static int mlx4_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
1202 {
1203         struct mlx4_ib_pd *pd = to_mpd(ibpd);
1204         struct ib_device *ibdev = ibpd->device;
1205         int err;
1206
1207         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1208         if (err)
1209                 return err;
1210
1211         if (udata && ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) {
1212                 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1213                 return -EFAULT;
1214         }
1215         return 0;
1216 }
1217
1218 static int mlx4_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
1219 {
1220         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1221         return 0;
1222 }
1223
1224 static int mlx4_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
1225 {
1226         struct mlx4_ib_dev *dev = to_mdev(ibxrcd->device);
1227         struct mlx4_ib_xrcd *xrcd = to_mxrcd(ibxrcd);
1228         struct ib_cq_init_attr cq_attr = {};
1229         int err;
1230
1231         if (!(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1232                 return -EOPNOTSUPP;
1233
1234         err = mlx4_xrcd_alloc(dev->dev, &xrcd->xrcdn);
1235         if (err)
1236                 return err;
1237
1238         xrcd->pd = ib_alloc_pd(ibxrcd->device, 0);
1239         if (IS_ERR(xrcd->pd)) {
1240                 err = PTR_ERR(xrcd->pd);
1241                 goto err2;
1242         }
1243
1244         cq_attr.cqe = 1;
1245         xrcd->cq = ib_create_cq(ibxrcd->device, NULL, NULL, xrcd, &cq_attr);
1246         if (IS_ERR(xrcd->cq)) {
1247                 err = PTR_ERR(xrcd->cq);
1248                 goto err3;
1249         }
1250
1251         return 0;
1252
1253 err3:
1254         ib_dealloc_pd(xrcd->pd);
1255 err2:
1256         mlx4_xrcd_free(dev->dev, xrcd->xrcdn);
1257         return err;
1258 }
1259
1260 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
1261 {
1262         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1263         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1264         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1265         return 0;
1266 }
1267
1268 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1269 {
1270         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1271         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1272         struct mlx4_ib_gid_entry *ge;
1273
1274         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1275         if (!ge)
1276                 return -ENOMEM;
1277
1278         ge->gid = *gid;
1279         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1280                 ge->port = mqp->port;
1281                 ge->added = 1;
1282         }
1283
1284         mutex_lock(&mqp->mutex);
1285         list_add_tail(&ge->list, &mqp->gid_list);
1286         mutex_unlock(&mqp->mutex);
1287
1288         return 0;
1289 }
1290
1291 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1292                                           struct mlx4_ib_counters *ctr_table)
1293 {
1294         struct counter_index *counter, *tmp_count;
1295
1296         mutex_lock(&ctr_table->mutex);
1297         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1298                                  list) {
1299                 if (counter->allocated)
1300                         mlx4_counter_free(ibdev->dev, counter->index);
1301                 list_del(&counter->list);
1302                 kfree(counter);
1303         }
1304         mutex_unlock(&ctr_table->mutex);
1305 }
1306
1307 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1308                    union ib_gid *gid)
1309 {
1310         struct net_device *ndev;
1311         int ret = 0;
1312
1313         if (!mqp->port)
1314                 return 0;
1315
1316         spin_lock_bh(&mdev->iboe.lock);
1317         ndev = mdev->iboe.netdevs[mqp->port - 1];
1318         if (ndev)
1319                 dev_hold(ndev);
1320         spin_unlock_bh(&mdev->iboe.lock);
1321
1322         if (ndev) {
1323                 ret = 1;
1324                 dev_put(ndev);
1325         }
1326
1327         return ret;
1328 }
1329
1330 struct mlx4_ib_steering {
1331         struct list_head list;
1332         struct mlx4_flow_reg_id reg_id;
1333         union ib_gid gid;
1334 };
1335
1336 #define LAST_ETH_FIELD vlan_tag
1337 #define LAST_IB_FIELD sl
1338 #define LAST_IPV4_FIELD dst_ip
1339 #define LAST_TCP_UDP_FIELD src_port
1340
1341 /* Field is the last supported field */
1342 #define FIELDS_NOT_SUPPORTED(filter, field)\
1343         memchr_inv((void *)&filter.field  +\
1344                    sizeof(filter.field), 0,\
1345                    sizeof(filter) -\
1346                    offsetof(typeof(filter), field) -\
1347                    sizeof(filter.field))
1348
1349 static int parse_flow_attr(struct mlx4_dev *dev,
1350                            u32 qp_num,
1351                            union ib_flow_spec *ib_spec,
1352                            struct _rule_hw *mlx4_spec)
1353 {
1354         enum mlx4_net_trans_rule_id type;
1355
1356         switch (ib_spec->type) {
1357         case IB_FLOW_SPEC_ETH:
1358                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1359                         return -ENOTSUPP;
1360
1361                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1362                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1363                        ETH_ALEN);
1364                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1365                        ETH_ALEN);
1366                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1367                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1368                 break;
1369         case IB_FLOW_SPEC_IB:
1370                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1371                         return -ENOTSUPP;
1372
1373                 type = MLX4_NET_TRANS_RULE_ID_IB;
1374                 mlx4_spec->ib.l3_qpn =
1375                         cpu_to_be32(qp_num);
1376                 mlx4_spec->ib.qpn_mask =
1377                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1378                 break;
1379
1380
1381         case IB_FLOW_SPEC_IPV4:
1382                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1383                         return -ENOTSUPP;
1384
1385                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1386                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1387                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1388                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1389                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1390                 break;
1391
1392         case IB_FLOW_SPEC_TCP:
1393         case IB_FLOW_SPEC_UDP:
1394                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1395                         return -ENOTSUPP;
1396
1397                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1398                                         MLX4_NET_TRANS_RULE_ID_TCP :
1399                                         MLX4_NET_TRANS_RULE_ID_UDP;
1400                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1401                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1402                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1403                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1404                 break;
1405
1406         default:
1407                 return -EINVAL;
1408         }
1409         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1410             mlx4_hw_rule_sz(dev, type) < 0)
1411                 return -EINVAL;
1412         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1413         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1414         return mlx4_hw_rule_sz(dev, type);
1415 }
1416
1417 struct default_rules {
1418         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1419         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1420         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1421         __u8  link_layer;
1422 };
1423 static const struct default_rules default_table[] = {
1424         {
1425                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1426                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1427                 .rules_create_list = {IB_FLOW_SPEC_IB},
1428                 .link_layer = IB_LINK_LAYER_INFINIBAND
1429         }
1430 };
1431
1432 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1433                                          struct ib_flow_attr *flow_attr)
1434 {
1435         int i, j, k;
1436         void *ib_flow;
1437         const struct default_rules *pdefault_rules = default_table;
1438         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1439
1440         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1441                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1442                 memset(&field_types, 0, sizeof(field_types));
1443
1444                 if (link_layer != pdefault_rules->link_layer)
1445                         continue;
1446
1447                 ib_flow = flow_attr + 1;
1448                 /* we assume the specs are sorted */
1449                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1450                      j < flow_attr->num_of_specs; k++) {
1451                         union ib_flow_spec *current_flow =
1452                                 (union ib_flow_spec *)ib_flow;
1453
1454                         /* same layer but different type */
1455                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1456                              (pdefault_rules->mandatory_fields[k] &
1457                               IB_FLOW_SPEC_LAYER_MASK)) &&
1458                             (current_flow->type !=
1459                              pdefault_rules->mandatory_fields[k]))
1460                                 goto out;
1461
1462                         /* same layer, try match next one */
1463                         if (current_flow->type ==
1464                             pdefault_rules->mandatory_fields[k]) {
1465                                 j++;
1466                                 ib_flow +=
1467                                         ((union ib_flow_spec *)ib_flow)->size;
1468                         }
1469                 }
1470
1471                 ib_flow = flow_attr + 1;
1472                 for (j = 0; j < flow_attr->num_of_specs;
1473                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1474                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1475                                 /* same layer and same type */
1476                                 if (((union ib_flow_spec *)ib_flow)->type ==
1477                                     pdefault_rules->mandatory_not_fields[k])
1478                                         goto out;
1479
1480                 return i;
1481         }
1482 out:
1483         return -1;
1484 }
1485
1486 static int __mlx4_ib_create_default_rules(
1487                 struct mlx4_ib_dev *mdev,
1488                 struct ib_qp *qp,
1489                 const struct default_rules *pdefault_rules,
1490                 struct _rule_hw *mlx4_spec) {
1491         int size = 0;
1492         int i;
1493
1494         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1495                 union ib_flow_spec ib_spec = {};
1496                 int ret;
1497
1498                 switch (pdefault_rules->rules_create_list[i]) {
1499                 case 0:
1500                         /* no rule */
1501                         continue;
1502                 case IB_FLOW_SPEC_IB:
1503                         ib_spec.type = IB_FLOW_SPEC_IB;
1504                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1505
1506                         break;
1507                 default:
1508                         /* invalid rule */
1509                         return -EINVAL;
1510                 }
1511                 /* We must put empty rule, qpn is being ignored */
1512                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1513                                       mlx4_spec);
1514                 if (ret < 0) {
1515                         pr_info("invalid parsing\n");
1516                         return -EINVAL;
1517                 }
1518
1519                 mlx4_spec = (void *)mlx4_spec + ret;
1520                 size += ret;
1521         }
1522         return size;
1523 }
1524
1525 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1526                           int domain,
1527                           enum mlx4_net_trans_promisc_mode flow_type,
1528                           u64 *reg_id)
1529 {
1530         int ret, i;
1531         int size = 0;
1532         void *ib_flow;
1533         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1534         struct mlx4_cmd_mailbox *mailbox;
1535         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1536         int default_flow;
1537
1538         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1539                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1540                 return -EINVAL;
1541         }
1542
1543         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1544                 return -EINVAL;
1545
1546         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1547         if (IS_ERR(mailbox))
1548                 return PTR_ERR(mailbox);
1549         ctrl = mailbox->buf;
1550
1551         ctrl->prio = cpu_to_be16(domain | flow_attr->priority);
1552         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1553         ctrl->port = flow_attr->port;
1554         ctrl->qpn = cpu_to_be32(qp->qp_num);
1555
1556         ib_flow = flow_attr + 1;
1557         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1558         /* Add default flows */
1559         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1560         if (default_flow >= 0) {
1561                 ret = __mlx4_ib_create_default_rules(
1562                                 mdev, qp, default_table + default_flow,
1563                                 mailbox->buf + size);
1564                 if (ret < 0) {
1565                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1566                         return -EINVAL;
1567                 }
1568                 size += ret;
1569         }
1570         for (i = 0; i < flow_attr->num_of_specs; i++) {
1571                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1572                                       mailbox->buf + size);
1573                 if (ret < 0) {
1574                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1575                         return -EINVAL;
1576                 }
1577                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1578                 size += ret;
1579         }
1580
1581         if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1582             flow_attr->num_of_specs == 1) {
1583                 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1584                 enum ib_flow_spec_type header_spec =
1585                         ((union ib_flow_spec *)(flow_attr + 1))->type;
1586
1587                 if (header_spec == IB_FLOW_SPEC_ETH)
1588                         mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1589         }
1590
1591         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1592                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1593                            MLX4_CMD_NATIVE);
1594         if (ret == -ENOMEM)
1595                 pr_err("mcg table is full. Fail to register network rule.\n");
1596         else if (ret == -ENXIO)
1597                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1598         else if (ret)
1599                 pr_err("Invalid argument. Fail to register network rule.\n");
1600
1601         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1602         return ret;
1603 }
1604
1605 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1606 {
1607         int err;
1608         err = mlx4_cmd(dev, reg_id, 0, 0,
1609                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1610                        MLX4_CMD_NATIVE);
1611         if (err)
1612                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1613                        reg_id);
1614         return err;
1615 }
1616
1617 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1618                                     u64 *reg_id)
1619 {
1620         void *ib_flow;
1621         union ib_flow_spec *ib_spec;
1622         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1623         int err = 0;
1624
1625         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1626             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1627                 return 0; /* do nothing */
1628
1629         ib_flow = flow_attr + 1;
1630         ib_spec = (union ib_flow_spec *)ib_flow;
1631
1632         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1633                 return 0; /* do nothing */
1634
1635         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1636                                     flow_attr->port, qp->qp_num,
1637                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1638                                     reg_id);
1639         return err;
1640 }
1641
1642 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1643                                       struct ib_flow_attr *flow_attr,
1644                                       enum mlx4_net_trans_promisc_mode *type)
1645 {
1646         int err = 0;
1647
1648         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1649             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1650             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1651                 return -EOPNOTSUPP;
1652         }
1653
1654         if (flow_attr->num_of_specs == 0) {
1655                 type[0] = MLX4_FS_MC_SNIFFER;
1656                 type[1] = MLX4_FS_UC_SNIFFER;
1657         } else {
1658                 union ib_flow_spec *ib_spec;
1659
1660                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1661                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1662                         return -EINVAL;
1663
1664                 /* if all is zero than MC and UC */
1665                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1666                         type[0] = MLX4_FS_MC_SNIFFER;
1667                         type[1] = MLX4_FS_UC_SNIFFER;
1668                 } else {
1669                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1670                                             ib_spec->eth.mask.dst_mac[1],
1671                                             ib_spec->eth.mask.dst_mac[2],
1672                                             ib_spec->eth.mask.dst_mac[3],
1673                                             ib_spec->eth.mask.dst_mac[4],
1674                                             ib_spec->eth.mask.dst_mac[5]};
1675
1676                         /* Above xor was only on MC bit, non empty mask is valid
1677                          * only if this bit is set and rest are zero.
1678                          */
1679                         if (!is_zero_ether_addr(&mac[0]))
1680                                 return -EINVAL;
1681
1682                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1683                                 type[0] = MLX4_FS_MC_SNIFFER;
1684                         else
1685                                 type[0] = MLX4_FS_UC_SNIFFER;
1686                 }
1687         }
1688
1689         return err;
1690 }
1691
1692 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1693                                            struct ib_flow_attr *flow_attr,
1694                                            struct ib_udata *udata)
1695 {
1696         int err = 0, i = 0, j = 0;
1697         struct mlx4_ib_flow *mflow;
1698         enum mlx4_net_trans_promisc_mode type[2];
1699         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1700         int is_bonded = mlx4_is_bonded(dev);
1701
1702         if (!rdma_is_port_valid(qp->device, flow_attr->port))
1703                 return ERR_PTR(-EINVAL);
1704
1705         if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)
1706                 return ERR_PTR(-EOPNOTSUPP);
1707
1708         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1709             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1710                 return ERR_PTR(-EOPNOTSUPP);
1711
1712         if (udata &&
1713             udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen))
1714                 return ERR_PTR(-EOPNOTSUPP);
1715
1716         memset(type, 0, sizeof(type));
1717
1718         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1719         if (!mflow) {
1720                 err = -ENOMEM;
1721                 goto err_free;
1722         }
1723
1724         switch (flow_attr->type) {
1725         case IB_FLOW_ATTR_NORMAL:
1726                 /* If dont trap flag (continue match) is set, under specific
1727                  * condition traffic be replicated to given qp,
1728                  * without stealing it
1729                  */
1730                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1731                         err = mlx4_ib_add_dont_trap_rule(dev,
1732                                                          flow_attr,
1733                                                          type);
1734                         if (err)
1735                                 goto err_free;
1736                 } else {
1737                         type[0] = MLX4_FS_REGULAR;
1738                 }
1739                 break;
1740
1741         case IB_FLOW_ATTR_ALL_DEFAULT:
1742                 type[0] = MLX4_FS_ALL_DEFAULT;
1743                 break;
1744
1745         case IB_FLOW_ATTR_MC_DEFAULT:
1746                 type[0] = MLX4_FS_MC_DEFAULT;
1747                 break;
1748
1749         case IB_FLOW_ATTR_SNIFFER:
1750                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1751                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1752                 break;
1753
1754         default:
1755                 err = -EINVAL;
1756                 goto err_free;
1757         }
1758
1759         while (i < ARRAY_SIZE(type) && type[i]) {
1760                 err = __mlx4_ib_create_flow(qp, flow_attr, MLX4_DOMAIN_UVERBS,
1761                                             type[i], &mflow->reg_id[i].id);
1762                 if (err)
1763                         goto err_create_flow;
1764                 if (is_bonded) {
1765                         /* Application always sees one port so the mirror rule
1766                          * must be on port #2
1767                          */
1768                         flow_attr->port = 2;
1769                         err = __mlx4_ib_create_flow(qp, flow_attr,
1770                                                     MLX4_DOMAIN_UVERBS, type[j],
1771                                                     &mflow->reg_id[j].mirror);
1772                         flow_attr->port = 1;
1773                         if (err)
1774                                 goto err_create_flow;
1775                         j++;
1776                 }
1777
1778                 i++;
1779         }
1780
1781         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1782                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1783                                                &mflow->reg_id[i].id);
1784                 if (err)
1785                         goto err_create_flow;
1786
1787                 if (is_bonded) {
1788                         flow_attr->port = 2;
1789                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1790                                                        &mflow->reg_id[j].mirror);
1791                         flow_attr->port = 1;
1792                         if (err)
1793                                 goto err_create_flow;
1794                         j++;
1795                 }
1796                 /* function to create mirror rule */
1797                 i++;
1798         }
1799
1800         return &mflow->ibflow;
1801
1802 err_create_flow:
1803         while (i) {
1804                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1805                                              mflow->reg_id[i].id);
1806                 i--;
1807         }
1808
1809         while (j) {
1810                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1811                                              mflow->reg_id[j].mirror);
1812                 j--;
1813         }
1814 err_free:
1815         kfree(mflow);
1816         return ERR_PTR(err);
1817 }
1818
1819 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1820 {
1821         int err, ret = 0;
1822         int i = 0;
1823         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1824         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1825
1826         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1827                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1828                 if (err)
1829                         ret = err;
1830                 if (mflow->reg_id[i].mirror) {
1831                         err = __mlx4_ib_destroy_flow(mdev->dev,
1832                                                      mflow->reg_id[i].mirror);
1833                         if (err)
1834                                 ret = err;
1835                 }
1836                 i++;
1837         }
1838
1839         kfree(mflow);
1840         return ret;
1841 }
1842
1843 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1844 {
1845         int err;
1846         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1847         struct mlx4_dev *dev = mdev->dev;
1848         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1849         struct mlx4_ib_steering *ib_steering = NULL;
1850         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1851         struct mlx4_flow_reg_id reg_id;
1852
1853         if (mdev->dev->caps.steering_mode ==
1854             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1855                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1856                 if (!ib_steering)
1857                         return -ENOMEM;
1858         }
1859
1860         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1861                                     !!(mqp->flags &
1862                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1863                                     prot, &reg_id.id);
1864         if (err) {
1865                 pr_err("multicast attach op failed, err %d\n", err);
1866                 goto err_malloc;
1867         }
1868
1869         reg_id.mirror = 0;
1870         if (mlx4_is_bonded(dev)) {
1871                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1872                                             (mqp->port == 1) ? 2 : 1,
1873                                             !!(mqp->flags &
1874                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1875                                             prot, &reg_id.mirror);
1876                 if (err)
1877                         goto err_add;
1878         }
1879
1880         err = add_gid_entry(ibqp, gid);
1881         if (err)
1882                 goto err_add;
1883
1884         if (ib_steering) {
1885                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1886                 ib_steering->reg_id = reg_id;
1887                 mutex_lock(&mqp->mutex);
1888                 list_add(&ib_steering->list, &mqp->steering_rules);
1889                 mutex_unlock(&mqp->mutex);
1890         }
1891         return 0;
1892
1893 err_add:
1894         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1895                               prot, reg_id.id);
1896         if (reg_id.mirror)
1897                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1898                                       prot, reg_id.mirror);
1899 err_malloc:
1900         kfree(ib_steering);
1901
1902         return err;
1903 }
1904
1905 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1906 {
1907         struct mlx4_ib_gid_entry *ge;
1908         struct mlx4_ib_gid_entry *tmp;
1909         struct mlx4_ib_gid_entry *ret = NULL;
1910
1911         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1912                 if (!memcmp(raw, ge->gid.raw, 16)) {
1913                         ret = ge;
1914                         break;
1915                 }
1916         }
1917
1918         return ret;
1919 }
1920
1921 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1922 {
1923         int err;
1924         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1925         struct mlx4_dev *dev = mdev->dev;
1926         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1927         struct net_device *ndev;
1928         struct mlx4_ib_gid_entry *ge;
1929         struct mlx4_flow_reg_id reg_id = {0, 0};
1930         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1931
1932         if (mdev->dev->caps.steering_mode ==
1933             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1934                 struct mlx4_ib_steering *ib_steering;
1935
1936                 mutex_lock(&mqp->mutex);
1937                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1938                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1939                                 list_del(&ib_steering->list);
1940                                 break;
1941                         }
1942                 }
1943                 mutex_unlock(&mqp->mutex);
1944                 if (&ib_steering->list == &mqp->steering_rules) {
1945                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1946                         return -EINVAL;
1947                 }
1948                 reg_id = ib_steering->reg_id;
1949                 kfree(ib_steering);
1950         }
1951
1952         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1953                                     prot, reg_id.id);
1954         if (err)
1955                 return err;
1956
1957         if (mlx4_is_bonded(dev)) {
1958                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1959                                             prot, reg_id.mirror);
1960                 if (err)
1961                         return err;
1962         }
1963
1964         mutex_lock(&mqp->mutex);
1965         ge = find_gid_entry(mqp, gid->raw);
1966         if (ge) {
1967                 spin_lock_bh(&mdev->iboe.lock);
1968                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1969                 if (ndev)
1970                         dev_hold(ndev);
1971                 spin_unlock_bh(&mdev->iboe.lock);
1972                 if (ndev)
1973                         dev_put(ndev);
1974                 list_del(&ge->list);
1975                 kfree(ge);
1976         } else
1977                 pr_warn("could not find mgid entry\n");
1978
1979         mutex_unlock(&mqp->mutex);
1980
1981         return 0;
1982 }
1983
1984 static int init_node_data(struct mlx4_ib_dev *dev)
1985 {
1986         struct ib_smp *in_mad  = NULL;
1987         struct ib_smp *out_mad = NULL;
1988         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1989         int err = -ENOMEM;
1990
1991         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1992         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1993         if (!in_mad || !out_mad)
1994                 goto out;
1995
1996         init_query_mad(in_mad);
1997         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1998         if (mlx4_is_master(dev->dev))
1999                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2000
2001         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2002         if (err)
2003                 goto out;
2004
2005         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2006
2007         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2008
2009         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2010         if (err)
2011                 goto out;
2012
2013         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2014         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2015
2016 out:
2017         kfree(in_mad);
2018         kfree(out_mad);
2019         return err;
2020 }
2021
2022 static ssize_t hca_type_show(struct device *device,
2023                              struct device_attribute *attr, char *buf)
2024 {
2025         struct mlx4_ib_dev *dev =
2026                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2027
2028         return sysfs_emit(buf, "MT%d\n", dev->dev->persist->pdev->device);
2029 }
2030 static DEVICE_ATTR_RO(hca_type);
2031
2032 static ssize_t hw_rev_show(struct device *device,
2033                            struct device_attribute *attr, char *buf)
2034 {
2035         struct mlx4_ib_dev *dev =
2036                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2037
2038         return sysfs_emit(buf, "%x\n", dev->dev->rev_id);
2039 }
2040 static DEVICE_ATTR_RO(hw_rev);
2041
2042 static ssize_t board_id_show(struct device *device,
2043                              struct device_attribute *attr, char *buf)
2044 {
2045         struct mlx4_ib_dev *dev =
2046                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2047
2048         return sysfs_emit(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id);
2049 }
2050 static DEVICE_ATTR_RO(board_id);
2051
2052 static struct attribute *mlx4_class_attributes[] = {
2053         &dev_attr_hw_rev.attr,
2054         &dev_attr_hca_type.attr,
2055         &dev_attr_board_id.attr,
2056         NULL
2057 };
2058
2059 static const struct attribute_group mlx4_attr_group = {
2060         .attrs = mlx4_class_attributes,
2061 };
2062
2063 struct diag_counter {
2064         const char *name;
2065         u32 offset;
2066 };
2067
2068 #define DIAG_COUNTER(_name, _offset)                    \
2069         { .name = #_name, .offset = _offset }
2070
2071 static const struct diag_counter diag_basic[] = {
2072         DIAG_COUNTER(rq_num_lle, 0x00),
2073         DIAG_COUNTER(sq_num_lle, 0x04),
2074         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2075         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2076         DIAG_COUNTER(rq_num_lpe, 0x18),
2077         DIAG_COUNTER(sq_num_lpe, 0x1C),
2078         DIAG_COUNTER(rq_num_wrfe, 0x20),
2079         DIAG_COUNTER(sq_num_wrfe, 0x24),
2080         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2081         DIAG_COUNTER(sq_num_bre, 0x34),
2082         DIAG_COUNTER(sq_num_rire, 0x44),
2083         DIAG_COUNTER(rq_num_rire, 0x48),
2084         DIAG_COUNTER(sq_num_rae, 0x4C),
2085         DIAG_COUNTER(rq_num_rae, 0x50),
2086         DIAG_COUNTER(sq_num_roe, 0x54),
2087         DIAG_COUNTER(sq_num_tree, 0x5C),
2088         DIAG_COUNTER(sq_num_rree, 0x64),
2089         DIAG_COUNTER(rq_num_rnr, 0x68),
2090         DIAG_COUNTER(sq_num_rnr, 0x6C),
2091         DIAG_COUNTER(rq_num_oos, 0x100),
2092         DIAG_COUNTER(sq_num_oos, 0x104),
2093 };
2094
2095 static const struct diag_counter diag_ext[] = {
2096         DIAG_COUNTER(rq_num_dup, 0x130),
2097         DIAG_COUNTER(sq_num_to, 0x134),
2098 };
2099
2100 static const struct diag_counter diag_device_only[] = {
2101         DIAG_COUNTER(num_cqovf, 0x1A0),
2102         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2103 };
2104
2105 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2106                                                     u32 port_num)
2107 {
2108         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2109         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2110
2111         if (!diag[!!port_num].name)
2112                 return NULL;
2113
2114         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2115                                           diag[!!port_num].num_counters,
2116                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2117 }
2118
2119 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2120                                 struct rdma_hw_stats *stats,
2121                                 u32 port, int index)
2122 {
2123         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2124         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2125         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2126                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2127         int ret;
2128         int i;
2129
2130         ret = mlx4_query_diag_counters(dev->dev,
2131                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2132                                        diag[!!port].offset, hw_value,
2133                                        diag[!!port].num_counters, port);
2134
2135         if (ret)
2136                 return ret;
2137
2138         for (i = 0; i < diag[!!port].num_counters; i++)
2139                 stats->value[i] = hw_value[i];
2140
2141         return diag[!!port].num_counters;
2142 }
2143
2144 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2145                                          const char ***name,
2146                                          u32 **offset,
2147                                          u32 *num,
2148                                          bool port)
2149 {
2150         u32 num_counters;
2151
2152         num_counters = ARRAY_SIZE(diag_basic);
2153
2154         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2155                 num_counters += ARRAY_SIZE(diag_ext);
2156
2157         if (!port)
2158                 num_counters += ARRAY_SIZE(diag_device_only);
2159
2160         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2161         if (!*name)
2162                 return -ENOMEM;
2163
2164         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2165         if (!*offset)
2166                 goto err_name;
2167
2168         *num = num_counters;
2169
2170         return 0;
2171
2172 err_name:
2173         kfree(*name);
2174         return -ENOMEM;
2175 }
2176
2177 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2178                                        const char **name,
2179                                        u32 *offset,
2180                                        bool port)
2181 {
2182         int i;
2183         int j;
2184
2185         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2186                 name[i] = diag_basic[i].name;
2187                 offset[i] = diag_basic[i].offset;
2188         }
2189
2190         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2191                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2192                         name[j] = diag_ext[i].name;
2193                         offset[j] = diag_ext[i].offset;
2194                 }
2195         }
2196
2197         if (!port) {
2198                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2199                         name[j] = diag_device_only[i].name;
2200                         offset[j] = diag_device_only[i].offset;
2201                 }
2202         }
2203 }
2204
2205 static const struct ib_device_ops mlx4_ib_hw_stats_ops = {
2206         .alloc_hw_stats = mlx4_ib_alloc_hw_stats,
2207         .get_hw_stats = mlx4_ib_get_hw_stats,
2208 };
2209
2210 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2211 {
2212         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2213         int i;
2214         int ret;
2215         bool per_port = !!(ibdev->dev->caps.flags2 &
2216                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2217
2218         if (mlx4_is_slave(ibdev->dev))
2219                 return 0;
2220
2221         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2222                 /* i == 1 means we are building port counters */
2223                 if (i && !per_port)
2224                         continue;
2225
2226                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2227                                                     &diag[i].offset,
2228                                                     &diag[i].num_counters, i);
2229                 if (ret)
2230                         goto err_alloc;
2231
2232                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2233                                            diag[i].offset, i);
2234         }
2235
2236         ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops);
2237
2238         return 0;
2239
2240 err_alloc:
2241         if (i) {
2242                 kfree(diag[i - 1].name);
2243                 kfree(diag[i - 1].offset);
2244         }
2245
2246         return ret;
2247 }
2248
2249 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2250 {
2251         int i;
2252
2253         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2254                 kfree(ibdev->diag_counters[i].offset);
2255                 kfree(ibdev->diag_counters[i].name);
2256         }
2257 }
2258
2259 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2260 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2261                                struct net_device *dev,
2262                                int port)
2263 {
2264         u64 new_smac = 0;
2265         u64 release_mac = MLX4_IB_INVALID_MAC;
2266         struct mlx4_ib_qp *qp;
2267
2268         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2269         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2270
2271         /* no need for update QP1 and mac registration in non-SRIOV */
2272         if (!mlx4_is_mfunc(ibdev->dev))
2273                 return;
2274
2275         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2276         qp = ibdev->qp1_proxy[port - 1];
2277         if (qp) {
2278                 int new_smac_index;
2279                 u64 old_smac;
2280                 struct mlx4_update_qp_params update_params;
2281
2282                 mutex_lock(&qp->mutex);
2283                 old_smac = qp->pri.smac;
2284                 if (new_smac == old_smac)
2285                         goto unlock;
2286
2287                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2288
2289                 if (new_smac_index < 0)
2290                         goto unlock;
2291
2292                 update_params.smac_index = new_smac_index;
2293                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2294                                    &update_params)) {
2295                         release_mac = new_smac;
2296                         goto unlock;
2297                 }
2298                 /* if old port was zero, no mac was yet registered for this QP */
2299                 if (qp->pri.smac_port)
2300                         release_mac = old_smac;
2301                 qp->pri.smac = new_smac;
2302                 qp->pri.smac_port = port;
2303                 qp->pri.smac_index = new_smac_index;
2304         }
2305
2306 unlock:
2307         if (release_mac != MLX4_IB_INVALID_MAC)
2308                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2309         if (qp)
2310                 mutex_unlock(&qp->mutex);
2311         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2312 }
2313
2314 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2315                                  struct net_device *dev,
2316                                  unsigned long event)
2317
2318 {
2319         struct mlx4_ib_iboe *iboe;
2320         int update_qps_port = -1;
2321         int port;
2322
2323         ASSERT_RTNL();
2324
2325         iboe = &ibdev->iboe;
2326
2327         spin_lock_bh(&iboe->lock);
2328         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2329
2330                 iboe->netdevs[port - 1] =
2331                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2332
2333                 if (dev == iboe->netdevs[port - 1] &&
2334                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2335                      event == NETDEV_UP || event == NETDEV_CHANGE))
2336                         update_qps_port = port;
2337
2338                 if (dev == iboe->netdevs[port - 1] &&
2339                     (event == NETDEV_UP || event == NETDEV_DOWN)) {
2340                         enum ib_port_state port_state;
2341                         struct ib_event ibev = { };
2342
2343                         if (ib_get_cached_port_state(&ibdev->ib_dev, port,
2344                                                      &port_state))
2345                                 continue;
2346
2347                         if (event == NETDEV_UP &&
2348                             (port_state != IB_PORT_ACTIVE ||
2349                              iboe->last_port_state[port - 1] != IB_PORT_DOWN))
2350                                 continue;
2351                         if (event == NETDEV_DOWN &&
2352                             (port_state != IB_PORT_DOWN ||
2353                              iboe->last_port_state[port - 1] != IB_PORT_ACTIVE))
2354                                 continue;
2355                         iboe->last_port_state[port - 1] = port_state;
2356
2357                         ibev.device = &ibdev->ib_dev;
2358                         ibev.element.port_num = port;
2359                         ibev.event = event == NETDEV_UP ? IB_EVENT_PORT_ACTIVE :
2360                                                           IB_EVENT_PORT_ERR;
2361                         ib_dispatch_event(&ibev);
2362                 }
2363
2364         }
2365         spin_unlock_bh(&iboe->lock);
2366
2367         if (update_qps_port > 0)
2368                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2369 }
2370
2371 static int mlx4_ib_netdev_event(struct notifier_block *this,
2372                                 unsigned long event, void *ptr)
2373 {
2374         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2375         struct mlx4_ib_dev *ibdev;
2376
2377         if (!net_eq(dev_net(dev), &init_net))
2378                 return NOTIFY_DONE;
2379
2380         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2381         mlx4_ib_scan_netdevs(ibdev, dev, event);
2382
2383         return NOTIFY_DONE;
2384 }
2385
2386 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2387 {
2388         int port;
2389         int slave;
2390         int i;
2391
2392         if (mlx4_is_master(ibdev->dev)) {
2393                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2394                      ++slave) {
2395                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2396                                 for (i = 0;
2397                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2398                                      ++i) {
2399                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2400                                         /* master has the identity virt2phys pkey mapping */
2401                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2402                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2403                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2404                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2405                                 }
2406                         }
2407                 }
2408                 /* initialize pkey cache */
2409                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2410                         for (i = 0;
2411                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2412                              ++i)
2413                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2414                                         (i) ? 0 : 0xFFFF;
2415                 }
2416         }
2417 }
2418
2419 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2420 {
2421         int i, j, eq = 0, total_eqs = 0;
2422
2423         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2424                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2425         if (!ibdev->eq_table)
2426                 return;
2427
2428         for (i = 1; i <= dev->caps.num_ports; i++) {
2429                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2430                      j++, total_eqs++) {
2431                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2432                                 continue;
2433                         ibdev->eq_table[eq] = total_eqs;
2434                         if (!mlx4_assign_eq(dev, i,
2435                                             &ibdev->eq_table[eq]))
2436                                 eq++;
2437                         else
2438                                 ibdev->eq_table[eq] = -1;
2439                 }
2440         }
2441
2442         for (i = eq; i < dev->caps.num_comp_vectors;
2443              ibdev->eq_table[i++] = -1)
2444                 ;
2445
2446         /* Advertise the new number of EQs to clients */
2447         ibdev->ib_dev.num_comp_vectors = eq;
2448 }
2449
2450 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2451 {
2452         int i;
2453         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2454
2455         /* no eqs were allocated */
2456         if (!ibdev->eq_table)
2457                 return;
2458
2459         /* Reset the advertised EQ number */
2460         ibdev->ib_dev.num_comp_vectors = 0;
2461
2462         for (i = 0; i < total_eqs; i++)
2463                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2464
2465         kfree(ibdev->eq_table);
2466         ibdev->eq_table = NULL;
2467 }
2468
2469 static int mlx4_port_immutable(struct ib_device *ibdev, u32 port_num,
2470                                struct ib_port_immutable *immutable)
2471 {
2472         struct ib_port_attr attr;
2473         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2474         int err;
2475
2476         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2477                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2478                 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2479         } else {
2480                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2481                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2482                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2483                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2484                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2485                 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2486                 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2487                     RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2488                         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2489         }
2490
2491         err = ib_query_port(ibdev, port_num, &attr);
2492         if (err)
2493                 return err;
2494
2495         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2496         immutable->gid_tbl_len = attr.gid_tbl_len;
2497
2498         return 0;
2499 }
2500
2501 static void get_fw_ver_str(struct ib_device *device, char *str)
2502 {
2503         struct mlx4_ib_dev *dev =
2504                 container_of(device, struct mlx4_ib_dev, ib_dev);
2505         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
2506                  (int) (dev->dev->caps.fw_ver >> 32),
2507                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2508                  (int) dev->dev->caps.fw_ver & 0xffff);
2509 }
2510
2511 static const struct ib_device_ops mlx4_ib_dev_ops = {
2512         .owner = THIS_MODULE,
2513         .driver_id = RDMA_DRIVER_MLX4,
2514         .uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION,
2515
2516         .add_gid = mlx4_ib_add_gid,
2517         .alloc_mr = mlx4_ib_alloc_mr,
2518         .alloc_pd = mlx4_ib_alloc_pd,
2519         .alloc_ucontext = mlx4_ib_alloc_ucontext,
2520         .attach_mcast = mlx4_ib_mcg_attach,
2521         .create_ah = mlx4_ib_create_ah,
2522         .create_cq = mlx4_ib_create_cq,
2523         .create_qp = mlx4_ib_create_qp,
2524         .create_srq = mlx4_ib_create_srq,
2525         .dealloc_pd = mlx4_ib_dealloc_pd,
2526         .dealloc_ucontext = mlx4_ib_dealloc_ucontext,
2527         .del_gid = mlx4_ib_del_gid,
2528         .dereg_mr = mlx4_ib_dereg_mr,
2529         .destroy_ah = mlx4_ib_destroy_ah,
2530         .destroy_cq = mlx4_ib_destroy_cq,
2531         .destroy_qp = mlx4_ib_destroy_qp,
2532         .destroy_srq = mlx4_ib_destroy_srq,
2533         .detach_mcast = mlx4_ib_mcg_detach,
2534         .disassociate_ucontext = mlx4_ib_disassociate_ucontext,
2535         .drain_rq = mlx4_ib_drain_rq,
2536         .drain_sq = mlx4_ib_drain_sq,
2537         .get_dev_fw_str = get_fw_ver_str,
2538         .get_dma_mr = mlx4_ib_get_dma_mr,
2539         .get_link_layer = mlx4_ib_port_link_layer,
2540         .get_netdev = mlx4_ib_get_netdev,
2541         .get_port_immutable = mlx4_port_immutable,
2542         .map_mr_sg = mlx4_ib_map_mr_sg,
2543         .mmap = mlx4_ib_mmap,
2544         .modify_cq = mlx4_ib_modify_cq,
2545         .modify_device = mlx4_ib_modify_device,
2546         .modify_port = mlx4_ib_modify_port,
2547         .modify_qp = mlx4_ib_modify_qp,
2548         .modify_srq = mlx4_ib_modify_srq,
2549         .poll_cq = mlx4_ib_poll_cq,
2550         .post_recv = mlx4_ib_post_recv,
2551         .post_send = mlx4_ib_post_send,
2552         .post_srq_recv = mlx4_ib_post_srq_recv,
2553         .process_mad = mlx4_ib_process_mad,
2554         .query_ah = mlx4_ib_query_ah,
2555         .query_device = mlx4_ib_query_device,
2556         .query_gid = mlx4_ib_query_gid,
2557         .query_pkey = mlx4_ib_query_pkey,
2558         .query_port = mlx4_ib_query_port,
2559         .query_qp = mlx4_ib_query_qp,
2560         .query_srq = mlx4_ib_query_srq,
2561         .reg_user_mr = mlx4_ib_reg_user_mr,
2562         .req_notify_cq = mlx4_ib_arm_cq,
2563         .rereg_user_mr = mlx4_ib_rereg_user_mr,
2564         .resize_cq = mlx4_ib_resize_cq,
2565
2566         INIT_RDMA_OBJ_SIZE(ib_ah, mlx4_ib_ah, ibah),
2567         INIT_RDMA_OBJ_SIZE(ib_cq, mlx4_ib_cq, ibcq),
2568         INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd),
2569         INIT_RDMA_OBJ_SIZE(ib_srq, mlx4_ib_srq, ibsrq),
2570         INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext),
2571 };
2572
2573 static const struct ib_device_ops mlx4_ib_dev_wq_ops = {
2574         .create_rwq_ind_table = mlx4_ib_create_rwq_ind_table,
2575         .create_wq = mlx4_ib_create_wq,
2576         .destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table,
2577         .destroy_wq = mlx4_ib_destroy_wq,
2578         .modify_wq = mlx4_ib_modify_wq,
2579
2580         INIT_RDMA_OBJ_SIZE(ib_rwq_ind_table, mlx4_ib_rwq_ind_table,
2581                            ib_rwq_ind_tbl),
2582 };
2583
2584 static const struct ib_device_ops mlx4_ib_dev_mw_ops = {
2585         .alloc_mw = mlx4_ib_alloc_mw,
2586         .dealloc_mw = mlx4_ib_dealloc_mw,
2587
2588         INIT_RDMA_OBJ_SIZE(ib_mw, mlx4_ib_mw, ibmw),
2589 };
2590
2591 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = {
2592         .alloc_xrcd = mlx4_ib_alloc_xrcd,
2593         .dealloc_xrcd = mlx4_ib_dealloc_xrcd,
2594
2595         INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx4_ib_xrcd, ibxrcd),
2596 };
2597
2598 static const struct ib_device_ops mlx4_ib_dev_fs_ops = {
2599         .create_flow = mlx4_ib_create_flow,
2600         .destroy_flow = mlx4_ib_destroy_flow,
2601 };
2602
2603 static void *mlx4_ib_add(struct mlx4_dev *dev)
2604 {
2605         struct mlx4_ib_dev *ibdev;
2606         int num_ports = 0;
2607         int i, j;
2608         int err;
2609         struct mlx4_ib_iboe *iboe;
2610         int ib_num_ports = 0;
2611         int num_req_counters;
2612         int allocated;
2613         u32 counter_index;
2614         struct counter_index *new_counter_index = NULL;
2615
2616         pr_info_once("%s", mlx4_ib_version);
2617
2618         num_ports = 0;
2619         mlx4_foreach_ib_transport_port(i, dev)
2620                 num_ports++;
2621
2622         /* No point in registering a device with no ports... */
2623         if (num_ports == 0)
2624                 return NULL;
2625
2626         ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev);
2627         if (!ibdev) {
2628                 dev_err(&dev->persist->pdev->dev,
2629                         "Device struct alloc failed\n");
2630                 return NULL;
2631         }
2632
2633         iboe = &ibdev->iboe;
2634
2635         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2636                 goto err_dealloc;
2637
2638         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2639                 goto err_pd;
2640
2641         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2642                                  PAGE_SIZE);
2643         if (!ibdev->uar_map)
2644                 goto err_uar;
2645         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2646
2647         ibdev->dev = dev;
2648         ibdev->bond_next_port   = 0;
2649
2650         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2651         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2652         ibdev->num_ports                = num_ports;
2653         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2654                                                 1 : ibdev->num_ports;
2655         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2656         ibdev->ib_dev.dev.parent        = &dev->persist->pdev->dev;
2657
2658         ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops);
2659
2660         if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
2661             ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) ==
2662             IB_LINK_LAYER_ETHERNET) ||
2663             (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) ==
2664             IB_LINK_LAYER_ETHERNET)))
2665                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops);
2666
2667         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2668             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2669                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops);
2670
2671         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2672                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops);
2673         }
2674
2675         if (check_flow_steering_support(dev)) {
2676                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2677                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops);
2678         }
2679
2680         if (!dev->caps.userspace_caps)
2681                 ibdev->ib_dev.ops.uverbs_abi_ver =
2682                         MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2683
2684         mlx4_ib_alloc_eqs(dev, ibdev);
2685
2686         spin_lock_init(&iboe->lock);
2687
2688         if (init_node_data(ibdev))
2689                 goto err_map;
2690         mlx4_init_sl2vl_tbl(ibdev);
2691
2692         for (i = 0; i < ibdev->num_ports; ++i) {
2693                 mutex_init(&ibdev->counters_table[i].mutex);
2694                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2695                 iboe->last_port_state[i] = IB_PORT_DOWN;
2696         }
2697
2698         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2699         for (i = 0; i < num_req_counters; ++i) {
2700                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2701                 allocated = 0;
2702                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2703                                                 IB_LINK_LAYER_ETHERNET) {
2704                         err = mlx4_counter_alloc(ibdev->dev, &counter_index,
2705                                                  MLX4_RES_USAGE_DRIVER);
2706                         /* if failed to allocate a new counter, use default */
2707                         if (err)
2708                                 counter_index =
2709                                         mlx4_get_default_counter_index(dev,
2710                                                                        i + 1);
2711                         else
2712                                 allocated = 1;
2713                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2714                         counter_index = mlx4_get_default_counter_index(dev,
2715                                                                        i + 1);
2716                 }
2717                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2718                                             GFP_KERNEL);
2719                 if (!new_counter_index) {
2720                         if (allocated)
2721                                 mlx4_counter_free(ibdev->dev, counter_index);
2722                         goto err_counter;
2723                 }
2724                 new_counter_index->index = counter_index;
2725                 new_counter_index->allocated = allocated;
2726                 list_add_tail(&new_counter_index->list,
2727                               &ibdev->counters_table[i].counters_list);
2728                 ibdev->counters_table[i].default_counter = counter_index;
2729                 pr_info("counter index %d for port %d allocated %d\n",
2730                         counter_index, i + 1, allocated);
2731         }
2732         if (mlx4_is_bonded(dev))
2733                 for (i = 1; i < ibdev->num_ports ; ++i) {
2734                         new_counter_index =
2735                                         kmalloc(sizeof(struct counter_index),
2736                                                 GFP_KERNEL);
2737                         if (!new_counter_index)
2738                                 goto err_counter;
2739                         new_counter_index->index = counter_index;
2740                         new_counter_index->allocated = 0;
2741                         list_add_tail(&new_counter_index->list,
2742                                       &ibdev->counters_table[i].counters_list);
2743                         ibdev->counters_table[i].default_counter =
2744                                                                 counter_index;
2745                 }
2746
2747         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2748                 ib_num_ports++;
2749
2750         spin_lock_init(&ibdev->sm_lock);
2751         mutex_init(&ibdev->cap_mask_mutex);
2752         INIT_LIST_HEAD(&ibdev->qp_list);
2753         spin_lock_init(&ibdev->reset_flow_resource_lock);
2754
2755         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2756             ib_num_ports) {
2757                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2758                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2759                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2760                                             &ibdev->steer_qpn_base, 0,
2761                                             MLX4_RES_USAGE_DRIVER);
2762                 if (err)
2763                         goto err_counter;
2764
2765                 ibdev->ib_uc_qpns_bitmap =
2766                         kmalloc_array(BITS_TO_LONGS(ibdev->steer_qpn_count),
2767                                       sizeof(long),
2768                                       GFP_KERNEL);
2769                 if (!ibdev->ib_uc_qpns_bitmap)
2770                         goto err_steer_qp_release;
2771
2772                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2773                         bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2774                                     ibdev->steer_qpn_count);
2775                         err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2776                                         dev, ibdev->steer_qpn_base,
2777                                         ibdev->steer_qpn_base +
2778                                         ibdev->steer_qpn_count - 1);
2779                         if (err)
2780                                 goto err_steer_free_bitmap;
2781                 } else {
2782                         bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2783                                     ibdev->steer_qpn_count);
2784                 }
2785         }
2786
2787         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2788                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2789
2790         if (mlx4_ib_alloc_diag_counters(ibdev))
2791                 goto err_steer_free_bitmap;
2792
2793         rdma_set_device_sysfs_group(&ibdev->ib_dev, &mlx4_attr_group);
2794         if (ib_register_device(&ibdev->ib_dev, "mlx4_%d",
2795                                &dev->persist->pdev->dev))
2796                 goto err_diag_counters;
2797
2798         if (mlx4_ib_mad_init(ibdev))
2799                 goto err_reg;
2800
2801         if (mlx4_ib_init_sriov(ibdev))
2802                 goto err_mad;
2803
2804         if (!iboe->nb.notifier_call) {
2805                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2806                 err = register_netdevice_notifier(&iboe->nb);
2807                 if (err) {
2808                         iboe->nb.notifier_call = NULL;
2809                         goto err_notif;
2810                 }
2811         }
2812         if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2813                 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2814                 if (err)
2815                         goto err_notif;
2816         }
2817
2818         ibdev->ib_active = true;
2819         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2820                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2821                                          &ibdev->ib_dev);
2822
2823         if (mlx4_is_mfunc(ibdev->dev))
2824                 init_pkeys(ibdev);
2825
2826         /* create paravirt contexts for any VFs which are active */
2827         if (mlx4_is_master(ibdev->dev)) {
2828                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2829                         if (j == mlx4_master_func_num(ibdev->dev))
2830                                 continue;
2831                         if (mlx4_is_slave_active(ibdev->dev, j))
2832                                 do_slave_init(ibdev, j, 1);
2833                 }
2834         }
2835         return ibdev;
2836
2837 err_notif:
2838         if (ibdev->iboe.nb.notifier_call) {
2839                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2840                         pr_warn("failure unregistering notifier\n");
2841                 ibdev->iboe.nb.notifier_call = NULL;
2842         }
2843         flush_workqueue(wq);
2844
2845         mlx4_ib_close_sriov(ibdev);
2846
2847 err_mad:
2848         mlx4_ib_mad_cleanup(ibdev);
2849
2850 err_reg:
2851         ib_unregister_device(&ibdev->ib_dev);
2852
2853 err_diag_counters:
2854         mlx4_ib_diag_cleanup(ibdev);
2855
2856 err_steer_free_bitmap:
2857         kfree(ibdev->ib_uc_qpns_bitmap);
2858
2859 err_steer_qp_release:
2860         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2861                               ibdev->steer_qpn_count);
2862 err_counter:
2863         for (i = 0; i < ibdev->num_ports; ++i)
2864                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2865
2866 err_map:
2867         mlx4_ib_free_eqs(dev, ibdev);
2868         iounmap(ibdev->uar_map);
2869
2870 err_uar:
2871         mlx4_uar_free(dev, &ibdev->priv_uar);
2872
2873 err_pd:
2874         mlx4_pd_free(dev, ibdev->priv_pdn);
2875
2876 err_dealloc:
2877         ib_dealloc_device(&ibdev->ib_dev);
2878
2879         return NULL;
2880 }
2881
2882 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2883 {
2884         int offset;
2885
2886         WARN_ON(!dev->ib_uc_qpns_bitmap);
2887
2888         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2889                                          dev->steer_qpn_count,
2890                                          get_count_order(count));
2891         if (offset < 0)
2892                 return offset;
2893
2894         *qpn = dev->steer_qpn_base + offset;
2895         return 0;
2896 }
2897
2898 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2899 {
2900         if (!qpn ||
2901             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2902                 return;
2903
2904         if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n",
2905                  qpn, dev->steer_qpn_base))
2906                 /* not supposed to be here */
2907                 return;
2908
2909         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2910                               qpn - dev->steer_qpn_base,
2911                               get_count_order(count));
2912 }
2913
2914 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2915                          int is_attach)
2916 {
2917         int err;
2918         size_t flow_size;
2919         struct ib_flow_attr *flow = NULL;
2920         struct ib_flow_spec_ib *ib_spec;
2921
2922         if (is_attach) {
2923                 flow_size = sizeof(struct ib_flow_attr) +
2924                             sizeof(struct ib_flow_spec_ib);
2925                 flow = kzalloc(flow_size, GFP_KERNEL);
2926                 if (!flow)
2927                         return -ENOMEM;
2928                 flow->port = mqp->port;
2929                 flow->num_of_specs = 1;
2930                 flow->size = flow_size;
2931                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2932                 ib_spec->type = IB_FLOW_SPEC_IB;
2933                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2934                 /* Add an empty rule for IB L2 */
2935                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2936
2937                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow, MLX4_DOMAIN_NIC,
2938                                             MLX4_FS_REGULAR, &mqp->reg_id);
2939         } else {
2940                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2941         }
2942         kfree(flow);
2943         return err;
2944 }
2945
2946 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2947 {
2948         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2949         int p;
2950         int i;
2951
2952         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2953                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
2954         ibdev->ib_active = false;
2955         flush_workqueue(wq);
2956
2957         if (ibdev->iboe.nb.notifier_call) {
2958                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2959                         pr_warn("failure unregistering notifier\n");
2960                 ibdev->iboe.nb.notifier_call = NULL;
2961         }
2962
2963         mlx4_ib_close_sriov(ibdev);
2964         mlx4_ib_mad_cleanup(ibdev);
2965         ib_unregister_device(&ibdev->ib_dev);
2966         mlx4_ib_diag_cleanup(ibdev);
2967
2968         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2969                               ibdev->steer_qpn_count);
2970         kfree(ibdev->ib_uc_qpns_bitmap);
2971
2972         iounmap(ibdev->uar_map);
2973         for (p = 0; p < ibdev->num_ports; ++p)
2974                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
2975
2976         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2977                 mlx4_CLOSE_PORT(dev, p);
2978
2979         mlx4_ib_free_eqs(dev, ibdev);
2980
2981         mlx4_uar_free(dev, &ibdev->priv_uar);
2982         mlx4_pd_free(dev, ibdev->priv_pdn);
2983         ib_dealloc_device(&ibdev->ib_dev);
2984 }
2985
2986 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2987 {
2988         struct mlx4_ib_demux_work **dm = NULL;
2989         struct mlx4_dev *dev = ibdev->dev;
2990         int i;
2991         unsigned long flags;
2992         struct mlx4_active_ports actv_ports;
2993         unsigned int ports;
2994         unsigned int first_port;
2995
2996         if (!mlx4_is_master(dev))
2997                 return;
2998
2999         actv_ports = mlx4_get_active_ports(dev, slave);
3000         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3001         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3002
3003         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3004         if (!dm)
3005                 return;
3006
3007         for (i = 0; i < ports; i++) {
3008                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3009                 if (!dm[i]) {
3010                         while (--i >= 0)
3011                                 kfree(dm[i]);
3012                         goto out;
3013                 }
3014                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3015                 dm[i]->port = first_port + i + 1;
3016                 dm[i]->slave = slave;
3017                 dm[i]->do_init = do_init;
3018                 dm[i]->dev = ibdev;
3019         }
3020         /* initialize or tear down tunnel QPs for the slave */
3021         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3022         if (!ibdev->sriov.is_going_down) {
3023                 for (i = 0; i < ports; i++)
3024                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3025                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3026         } else {
3027                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3028                 for (i = 0; i < ports; i++)
3029                         kfree(dm[i]);
3030         }
3031 out:
3032         kfree(dm);
3033         return;
3034 }
3035
3036 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3037 {
3038         struct mlx4_ib_qp *mqp;
3039         unsigned long flags_qp;
3040         unsigned long flags_cq;
3041         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3042         struct list_head    cq_notify_list;
3043         struct mlx4_cq *mcq;
3044         unsigned long flags;
3045
3046         pr_warn("mlx4_ib_handle_catas_error was started\n");
3047         INIT_LIST_HEAD(&cq_notify_list);
3048
3049         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3050         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3051
3052         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3053                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3054                 if (mqp->sq.tail != mqp->sq.head) {
3055                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3056                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3057                         if (send_mcq->mcq.comp &&
3058                             mqp->ibqp.send_cq->comp_handler) {
3059                                 if (!send_mcq->mcq.reset_notify_added) {
3060                                         send_mcq->mcq.reset_notify_added = 1;
3061                                         list_add_tail(&send_mcq->mcq.reset_notify,
3062                                                       &cq_notify_list);
3063                                 }
3064                         }
3065                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3066                 }
3067                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3068                 /* Now, handle the QP's receive queue */
3069                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3070                 /* no handling is needed for SRQ */
3071                 if (!mqp->ibqp.srq) {
3072                         if (mqp->rq.tail != mqp->rq.head) {
3073                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3074                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3075                                 if (recv_mcq->mcq.comp &&
3076                                     mqp->ibqp.recv_cq->comp_handler) {
3077                                         if (!recv_mcq->mcq.reset_notify_added) {
3078                                                 recv_mcq->mcq.reset_notify_added = 1;
3079                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3080                                                               &cq_notify_list);
3081                                         }
3082                                 }
3083                                 spin_unlock_irqrestore(&recv_mcq->lock,
3084                                                        flags_cq);
3085                         }
3086                 }
3087                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3088         }
3089
3090         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3091                 mcq->comp(mcq);
3092         }
3093         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3094         pr_warn("mlx4_ib_handle_catas_error ended\n");
3095 }
3096
3097 static void handle_bonded_port_state_event(struct work_struct *work)
3098 {
3099         struct ib_event_work *ew =
3100                 container_of(work, struct ib_event_work, work);
3101         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3102         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3103         int i;
3104         struct ib_event ibev;
3105
3106         kfree(ew);
3107         spin_lock_bh(&ibdev->iboe.lock);
3108         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3109                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3110                 enum ib_port_state curr_port_state;
3111
3112                 if (!curr_netdev)
3113                         continue;
3114
3115                 curr_port_state =
3116                         (netif_running(curr_netdev) &&
3117                          netif_carrier_ok(curr_netdev)) ?
3118                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3119
3120                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3121                         curr_port_state : IB_PORT_ACTIVE;
3122         }
3123         spin_unlock_bh(&ibdev->iboe.lock);
3124
3125         ibev.device = &ibdev->ib_dev;
3126         ibev.element.port_num = 1;
3127         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3128                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3129
3130         ib_dispatch_event(&ibev);
3131 }
3132
3133 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3134 {
3135         u64 sl2vl;
3136         int err;
3137
3138         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3139         if (err) {
3140                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3141                        port, err);
3142                 sl2vl = 0;
3143         }
3144         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3145 }
3146
3147 static void ib_sl2vl_update_work(struct work_struct *work)
3148 {
3149         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3150         struct mlx4_ib_dev *mdev = ew->ib_dev;
3151         int port = ew->port;
3152
3153         mlx4_ib_sl2vl_update(mdev, port);
3154
3155         kfree(ew);
3156 }
3157
3158 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3159                                      int port)
3160 {
3161         struct ib_event_work *ew;
3162
3163         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3164         if (ew) {
3165                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3166                 ew->port = port;
3167                 ew->ib_dev = ibdev;
3168                 queue_work(wq, &ew->work);
3169         }
3170 }
3171
3172 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3173                           enum mlx4_dev_event event, unsigned long param)
3174 {
3175         struct ib_event ibev;
3176         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3177         struct mlx4_eqe *eqe = NULL;
3178         struct ib_event_work *ew;
3179         int p = 0;
3180
3181         if (mlx4_is_bonded(dev) &&
3182             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3183             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3184                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3185                 if (!ew)
3186                         return;
3187                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3188                 ew->ib_dev = ibdev;
3189                 queue_work(wq, &ew->work);
3190                 return;
3191         }
3192
3193         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3194                 eqe = (struct mlx4_eqe *)param;
3195         else
3196                 p = (int) param;
3197
3198         switch (event) {
3199         case MLX4_DEV_EVENT_PORT_UP:
3200                 if (p > ibdev->num_ports)
3201                         return;
3202                 if (!mlx4_is_slave(dev) &&
3203                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3204                         IB_LINK_LAYER_INFINIBAND) {
3205                         if (mlx4_is_master(dev))
3206                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3207                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3208                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3209                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3210                 }
3211                 ibev.event = IB_EVENT_PORT_ACTIVE;
3212                 break;
3213
3214         case MLX4_DEV_EVENT_PORT_DOWN:
3215                 if (p > ibdev->num_ports)
3216                         return;
3217                 ibev.event = IB_EVENT_PORT_ERR;
3218                 break;
3219
3220         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3221                 ibdev->ib_active = false;
3222                 ibev.event = IB_EVENT_DEVICE_FATAL;
3223                 mlx4_ib_handle_catas_error(ibdev);
3224                 break;
3225
3226         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3227                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3228                 if (!ew)
3229                         break;
3230
3231                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3232                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3233                 ew->ib_dev = ibdev;
3234                 /* need to queue only for port owner, which uses GEN_EQE */
3235                 if (mlx4_is_master(dev))
3236                         queue_work(wq, &ew->work);
3237                 else
3238                         handle_port_mgmt_change_event(&ew->work);
3239                 return;
3240
3241         case MLX4_DEV_EVENT_SLAVE_INIT:
3242                 /* here, p is the slave id */
3243                 do_slave_init(ibdev, p, 1);
3244                 if (mlx4_is_master(dev)) {
3245                         int i;
3246
3247                         for (i = 1; i <= ibdev->num_ports; i++) {
3248                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3249                                         == IB_LINK_LAYER_INFINIBAND)
3250                                         mlx4_ib_slave_alias_guid_event(ibdev,
3251                                                                        p, i,
3252                                                                        1);
3253                         }
3254                 }
3255                 return;
3256
3257         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3258                 if (mlx4_is_master(dev)) {
3259                         int i;
3260
3261                         for (i = 1; i <= ibdev->num_ports; i++) {
3262                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3263                                         == IB_LINK_LAYER_INFINIBAND)
3264                                         mlx4_ib_slave_alias_guid_event(ibdev,
3265                                                                        p, i,
3266                                                                        0);
3267                         }
3268                 }
3269                 /* here, p is the slave id */
3270                 do_slave_init(ibdev, p, 0);
3271                 return;
3272
3273         default:
3274                 return;
3275         }
3276
3277         ibev.device           = ibdev_ptr;
3278         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3279
3280         ib_dispatch_event(&ibev);
3281 }
3282
3283 static struct mlx4_interface mlx4_ib_interface = {
3284         .add            = mlx4_ib_add,
3285         .remove         = mlx4_ib_remove,
3286         .event          = mlx4_ib_event,
3287         .protocol       = MLX4_PROT_IB_IPV6,
3288         .flags          = MLX4_INTFF_BONDING
3289 };
3290
3291 static int __init mlx4_ib_init(void)
3292 {
3293         int err;
3294
3295         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3296         if (!wq)
3297                 return -ENOMEM;
3298
3299         err = mlx4_ib_mcg_init();
3300         if (err)
3301                 goto clean_wq;
3302
3303         err = mlx4_register_interface(&mlx4_ib_interface);
3304         if (err)
3305                 goto clean_mcg;
3306
3307         return 0;
3308
3309 clean_mcg:
3310         mlx4_ib_mcg_destroy();
3311
3312 clean_wq:
3313         destroy_workqueue(wq);
3314         return err;
3315 }
3316
3317 static void __exit mlx4_ib_cleanup(void)
3318 {
3319         mlx4_unregister_interface(&mlx4_ib_interface);
3320         mlx4_ib_mcg_destroy();
3321         destroy_workqueue(wq);
3322 }
3323
3324 module_init(mlx4_ib_init);
3325 module_exit(mlx4_ib_cleanup);