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                                                     u8 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, u8 port_num)
 133 {
 134         struct mlx4_ib_dev *ibdev = to_mdev(device);
 135         struct net_device *dev;
 136
 137         rcu_read_lock();
 138         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 139
 140         if (dev) {
 141                 if (mlx4_is_bonded(ibdev->dev)) {
 142                         struct net_device *upper = NULL;
 143
 144                         upper = netdev_master_upper_dev_get_rcu(dev);
 145                         if (upper) {
 146                                 struct net_device *active;
 147
 148                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 149                                 if (active)
 150                                         dev = active;
 151                         }
 152                 }
 153         }
 154         if (dev)
 155                 dev_hold(dev);
 156
 157         rcu_read_unlock();
 158         return dev;
 159 }
 160
 161 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 162                                   struct mlx4_ib_dev *ibdev,
 163                                   u8 port_num)
 164 {
 165         struct mlx4_cmd_mailbox *mailbox;
 166         int err;
 167         struct mlx4_dev *dev = ibdev->dev;
 168         int i;
 169         union ib_gid *gid_tbl;
 170
 171         mailbox = mlx4_alloc_cmd_mailbox(dev);
 172         if (IS_ERR(mailbox))
 173                 return -ENOMEM;
 174
 175         gid_tbl = mailbox->buf;
 176
 177         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 178                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 179
 180         err = mlx4_cmd(dev, mailbox->dma,
 181                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 182                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 183                        MLX4_CMD_WRAPPED);
 184         if (mlx4_is_bonded(dev))
 185                 err += mlx4_cmd(dev, mailbox->dma,
 186                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 187                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 188                                 MLX4_CMD_WRAPPED);
 189
 190         mlx4_free_cmd_mailbox(dev, mailbox);
 191         return err;
 192 }
 193
 194 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 195                                      struct mlx4_ib_dev *ibdev,
 196                                      u8 port_num)
 197 {
 198         struct mlx4_cmd_mailbox *mailbox;
 199         int err;
 200         struct mlx4_dev *dev = ibdev->dev;
 201         int i;
 202         struct {
 203                 union ib_gid    gid;
 204                 __be32          rsrvd1[2];
 205                 __be16          rsrvd2;
 206                 u8              type;
 207                 u8              version;
 208                 __be32          rsrvd3;
 209         } *gid_tbl;
 210
 211         mailbox = mlx4_alloc_cmd_mailbox(dev);
 212         if (IS_ERR(mailbox))
 213                 return -ENOMEM;
 214
 215         gid_tbl = mailbox->buf;
 216         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 217                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 218                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 219                         gid_tbl[i].version = 2;
 220                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 221                                 gid_tbl[i].type = 1;
 222                 }
 223         }
 224
 225         err = mlx4_cmd(dev, mailbox->dma,
 226                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 227                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 228                        MLX4_CMD_WRAPPED);
 229         if (mlx4_is_bonded(dev))
 230                 err += mlx4_cmd(dev, mailbox->dma,
 231                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 232                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 233                                 MLX4_CMD_WRAPPED);
 234
 235         mlx4_free_cmd_mailbox(dev, mailbox);
 236         return err;
 237 }
 238
 239 static int mlx4_ib_update_gids(struct gid_entry *gids,
 240                                struct mlx4_ib_dev *ibdev,
 241                                u8 port_num)
 242 {
 243         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 244                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 245
 246         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 247 }
 248
 249 static void free_gid_entry(struct gid_entry *entry)
 250 {
 251         memset(&entry->gid, 0, sizeof(entry->gid));
 252         kfree(entry->ctx);
 253         entry->ctx = NULL;
 254 }
 255
 256 static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context)
 257 {
 258         struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
 259         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 260         struct mlx4_port_gid_table   *port_gid_table;
 261         int free = -1, found = -1;
 262         int ret = 0;
 263         int hw_update = 0;
 264         int i;
 265         struct gid_entry *gids = NULL;
 266
 267         if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
 268                 return -EINVAL;
 269
 270         if (attr->port_num > MLX4_MAX_PORTS)
 271                 return -EINVAL;
 272
 273         if (!context)
 274                 return -EINVAL;
 275
 276         port_gid_table = &iboe->gids[attr->port_num - 1];
 277         spin_lock_bh(&iboe->lock);
 278         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 279                 if (!memcmp(&port_gid_table->gids[i].gid,
 280                             &attr->gid, sizeof(attr->gid)) &&
 281                     port_gid_table->gids[i].gid_type == attr->gid_type)  {
 282                         found = i;
 283                         break;
 284                 }
 285                 if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid))
 286                         free = i; /* HW has space */
 287         }
 288
 289         if (found < 0) {
 290                 if (free < 0) {
 291                         ret = -ENOSPC;
 292                 } else {
 293                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 294                         if (!port_gid_table->gids[free].ctx) {
 295                                 ret = -ENOMEM;
 296                         } else {
 297                                 *context = port_gid_table->gids[free].ctx;
 298                                 memcpy(&port_gid_table->gids[free].gid,
 299                                        &attr->gid, sizeof(attr->gid));
 300                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 301                                 port_gid_table->gids[free].ctx->real_index = free;
 302                                 port_gid_table->gids[free].ctx->refcount = 1;
 303                                 hw_update = 1;
 304                         }
 305                 }
 306         } else {
 307                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 308                 *context = ctx;
 309                 ctx->refcount++;
 310         }
 311         if (!ret && hw_update) {
 312                 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
 313                                      GFP_ATOMIC);
 314                 if (!gids) {
 315                         ret = -ENOMEM;
 316                         *context = NULL;
 317                         free_gid_entry(&port_gid_table->gids[free]);
 318                 } else {
 319                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 320                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 321                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 322                         }
 323                 }
 324         }
 325         spin_unlock_bh(&iboe->lock);
 326
 327         if (!ret && hw_update) {
 328                 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
 329                 if (ret) {
 330                         spin_lock_bh(&iboe->lock);
 331                         *context = NULL;
 332                         free_gid_entry(&port_gid_table->gids[free]);
 333                         spin_unlock_bh(&iboe->lock);
 334                 }
 335                 kfree(gids);
 336         }
 337
 338         return ret;
 339 }
 340
 341 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context)
 342 {
 343         struct gid_cache_context *ctx = *context;
 344         struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
 345         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 346         struct mlx4_port_gid_table   *port_gid_table;
 347         int ret = 0;
 348         int hw_update = 0;
 349         struct gid_entry *gids = NULL;
 350
 351         if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
 352                 return -EINVAL;
 353
 354         if (attr->port_num > MLX4_MAX_PORTS)
 355                 return -EINVAL;
 356
 357         port_gid_table = &iboe->gids[attr->port_num - 1];
 358         spin_lock_bh(&iboe->lock);
 359         if (ctx) {
 360                 ctx->refcount--;
 361                 if (!ctx->refcount) {
 362                         unsigned int real_index = ctx->real_index;
 363
 364                         free_gid_entry(&port_gid_table->gids[real_index]);
 365                         hw_update = 1;
 366                 }
 367         }
 368         if (!ret && hw_update) {
 369                 int i;
 370
 371                 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
 372                                      GFP_ATOMIC);
 373                 if (!gids) {
 374                         ret = -ENOMEM;
 375                 } else {
 376                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 377                                 memcpy(&gids[i].gid,
 378                                        &port_gid_table->gids[i].gid,
 379                                        sizeof(union ib_gid));
 380                                 gids[i].gid_type =
 381                                     port_gid_table->gids[i].gid_type;
 382                         }
 383                 }
 384         }
 385         spin_unlock_bh(&iboe->lock);
 386
 387         if (!ret && hw_update) {
 388                 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
 389                 kfree(gids);
 390         }
 391         return ret;
 392 }
 393
 394 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 395                                     const struct ib_gid_attr *attr)
 396 {
 397         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 398         struct gid_cache_context *ctx = NULL;
 399         struct mlx4_port_gid_table   *port_gid_table;
 400         int real_index = -EINVAL;
 401         int i;
 402         unsigned long flags;
 403         u8 port_num = attr->port_num;
 404
 405         if (port_num > MLX4_MAX_PORTS)
 406                 return -EINVAL;
 407
 408         if (mlx4_is_bonded(ibdev->dev))
 409                 port_num = 1;
 410
 411         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 412                 return attr->index;
 413
 414         spin_lock_irqsave(&iboe->lock, flags);
 415         port_gid_table = &iboe->gids[port_num - 1];
 416
 417         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 418                 if (!memcmp(&port_gid_table->gids[i].gid,
 419                             &attr->gid, sizeof(attr->gid)) &&
 420                     attr->gid_type == port_gid_table->gids[i].gid_type) {
 421                         ctx = port_gid_table->gids[i].ctx;
 422                         break;
 423                 }
 424         if (ctx)
 425                 real_index = ctx->real_index;
 426         spin_unlock_irqrestore(&iboe->lock, flags);
 427         return real_index;
 428 }
 429
 430 #define field_avail(type, fld, sz) (offsetof(type, fld) + \
 431                                     sizeof(((type *)0)->fld) <= (sz))
 432
 433 static int mlx4_ib_query_device(struct ib_device *ibdev,
 434                                 struct ib_device_attr *props,
 435                                 struct ib_udata *uhw)
 436 {
 437         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 438         struct ib_smp *in_mad  = NULL;
 439         struct ib_smp *out_mad = NULL;
 440         int err;
 441         int have_ib_ports;
 442         struct mlx4_uverbs_ex_query_device cmd;
 443         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 444         struct mlx4_clock_params clock_params;
 445
 446         if (uhw->inlen) {
 447                 if (uhw->inlen < sizeof(cmd))
 448                         return -EINVAL;
 449
 450                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 451                 if (err)
 452                         return err;
 453
 454                 if (cmd.comp_mask)
 455                         return -EINVAL;
 456
 457                 if (cmd.reserved)
 458                         return -EINVAL;
 459         }
 460
 461         resp.response_length = offsetof(typeof(resp), response_length) +
 462                 sizeof(resp.response_length);
 463         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 464         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 465         err = -ENOMEM;
 466         if (!in_mad || !out_mad)
 467                 goto out;
 468
 469         init_query_mad(in_mad);
 470         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 471
 472         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 473                            1, NULL, NULL, in_mad, out_mad);
 474         if (err)
 475                 goto out;
 476
 477         memset(props, 0, sizeof *props);
 478
 479         have_ib_ports = num_ib_ports(dev->dev);
 480
 481         props->fw_ver = dev->dev->caps.fw_ver;
 482         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 483                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 484                 IB_DEVICE_SYS_IMAGE_GUID                |
 485                 IB_DEVICE_RC_RNR_NAK_GEN                |
 486                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 487         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 488                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 489         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 490                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 491         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 492                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 493         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 494                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 495         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 496                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 497         if (dev->dev->caps.max_gso_sz &&
 498             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 499             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 500                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 501         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 502                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 503         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 504             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 505             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 506                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 507         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 508                 props->device_cap_flags |= IB_DEVICE_XRC;
 509         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 510                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 511         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 512                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 513                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 514                 else
 515                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 516         }
 517         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 518                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 519
 520         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 521
 522         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 523                 0xffffff;
 524         props->vendor_part_id      = dev->dev->persist->pdev->device;
 525         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 526         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 527
 528         props->max_mr_size         = ~0ull;
 529         props->page_size_cap       = dev->dev->caps.page_size_cap;
 530         props->max_qp              = dev->dev->quotas.qp;
 531         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 532         props->max_send_sge =
 533                 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
 534         props->max_recv_sge =
 535                 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
 536         props->max_sge_rd = MLX4_MAX_SGE_RD;
 537         props->max_cq              = dev->dev->quotas.cq;
 538         props->max_cqe             = dev->dev->caps.max_cqes;
 539         props->max_mr              = dev->dev->quotas.mpt;
 540         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 541         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 542         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 543         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 544         props->max_srq             = dev->dev->quotas.srq;
 545         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 546         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 547         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 548         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 549         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 550                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 551         props->masked_atomic_cap   = props->atomic_cap;
 552         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 553         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 554         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 555         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 556                                            props->max_mcast_grp;
 557         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 558         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 559         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 560         props->max_ah = INT_MAX;
 561
 562         if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
 563             mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) {
 564                 if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) {
 565                         props->rss_caps.max_rwq_indirection_tables =
 566                                 props->max_qp;
 567                         props->rss_caps.max_rwq_indirection_table_size =
 568                                 dev->dev->caps.max_rss_tbl_sz;
 569                         props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
 570                         props->max_wq_type_rq = props->max_qp;
 571                 }
 572
 573                 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
 574                         props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
 575         }
 576
 577         props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
 578         props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
 579
 580         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 581                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 582                 if (!mlx4_get_internal_clock_params(dev->dev, &clock_params)) {
 583                         resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET;
 584                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 585                 }
 586         }
 587
 588         if (uhw->outlen >= resp.response_length +
 589             sizeof(resp.max_inl_recv_sz)) {
 590                 resp.response_length += sizeof(resp.max_inl_recv_sz);
 591                 resp.max_inl_recv_sz  = dev->dev->caps.max_rq_sg *
 592                         sizeof(struct mlx4_wqe_data_seg);
 593         }
 594
 595         if (field_avail(typeof(resp), rss_caps, uhw->outlen)) {
 596                 if (props->rss_caps.supported_qpts) {
 597                         resp.rss_caps.rx_hash_function =
 598                                 MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
 599
 600                         resp.rss_caps.rx_hash_fields_mask =
 601                                 MLX4_IB_RX_HASH_SRC_IPV4 |
 602                                 MLX4_IB_RX_HASH_DST_IPV4 |
 603                                 MLX4_IB_RX_HASH_SRC_IPV6 |
 604                                 MLX4_IB_RX_HASH_DST_IPV6 |
 605                                 MLX4_IB_RX_HASH_SRC_PORT_TCP |
 606                                 MLX4_IB_RX_HASH_DST_PORT_TCP |
 607                                 MLX4_IB_RX_HASH_SRC_PORT_UDP |
 608                                 MLX4_IB_RX_HASH_DST_PORT_UDP;
 609
 610                         if (dev->dev->caps.tunnel_offload_mode ==
 611                             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
 612                                 resp.rss_caps.rx_hash_fields_mask |=
 613                                         MLX4_IB_RX_HASH_INNER;
 614                 }
 615                 resp.response_length = offsetof(typeof(resp), rss_caps) +
 616                                        sizeof(resp.rss_caps);
 617         }
 618
 619         if (field_avail(typeof(resp), tso_caps, uhw->outlen)) {
 620                 if (dev->dev->caps.max_gso_sz &&
 621                     ((mlx4_ib_port_link_layer(ibdev, 1) ==
 622                     IB_LINK_LAYER_ETHERNET) ||
 623                     (mlx4_ib_port_link_layer(ibdev, 2) ==
 624                     IB_LINK_LAYER_ETHERNET))) {
 625                         resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz;
 626                         resp.tso_caps.supported_qpts |=
 627                                 1 << IB_QPT_RAW_PACKET;
 628                 }
 629                 resp.response_length = offsetof(typeof(resp), tso_caps) +
 630                                        sizeof(resp.tso_caps);
 631         }
 632
 633         if (uhw->outlen) {
 634                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 635                 if (err)
 636                         goto out;
 637         }
 638 out:
 639         kfree(in_mad);
 640         kfree(out_mad);
 641
 642         return err;
 643 }
 644
 645 static enum rdma_link_layer
 646 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 647 {
 648         struct mlx4_dev *dev = to_mdev(device)->dev;
 649
 650         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 651                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 652 }
 653
 654 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 655                               struct ib_port_attr *props, int netw_view)
 656 {
 657         struct ib_smp *in_mad  = NULL;
 658         struct ib_smp *out_mad = NULL;
 659         int ext_active_speed;
 660         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 661         int err = -ENOMEM;
 662
 663         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 664         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 665         if (!in_mad || !out_mad)
 666                 goto out;
 667
 668         init_query_mad(in_mad);
 669         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 670         in_mad->attr_mod = cpu_to_be32(port);
 671
 672         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 673                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 674
 675         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 676                                 in_mad, out_mad);
 677         if (err)
 678                 goto out;
 679
 680
 681         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 682         props->lmc              = out_mad->data[34] & 0x7;
 683         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 684         props->sm_sl            = out_mad->data[36] & 0xf;
 685         props->state            = out_mad->data[32] & 0xf;
 686         props->phys_state       = out_mad->data[33] >> 4;
 687         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 688         if (netw_view)
 689                 props->gid_tbl_len = out_mad->data[50];
 690         else
 691                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 692         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 693         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 694         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 695         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 696         props->active_width     = out_mad->data[31] & 0xf;
 697         props->active_speed     = out_mad->data[35] >> 4;
 698         props->max_mtu          = out_mad->data[41] & 0xf;
 699         props->active_mtu       = out_mad->data[36] >> 4;
 700         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 701         props->max_vl_num       = out_mad->data[37] >> 4;
 702         props->init_type_reply  = out_mad->data[41] >> 4;
 703
 704         /* Check if extended speeds (EDR/FDR/...) are supported */
 705         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 706                 ext_active_speed = out_mad->data[62] >> 4;
 707
 708                 switch (ext_active_speed) {
 709                 case 1:
 710                         props->active_speed = IB_SPEED_FDR;
 711                         break;
 712                 case 2:
 713                         props->active_speed = IB_SPEED_EDR;
 714                         break;
 715                 }
 716         }
 717
 718         /* If reported active speed is QDR, check if is FDR-10 */
 719         if (props->active_speed == IB_SPEED_QDR) {
 720                 init_query_mad(in_mad);
 721                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 722                 in_mad->attr_mod = cpu_to_be32(port);
 723
 724                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 725                                    NULL, NULL, in_mad, out_mad);
 726                 if (err)
 727                         goto out;
 728
 729                 /* Checking LinkSpeedActive for FDR-10 */
 730                 if (out_mad->data[15] & 0x1)
 731                         props->active_speed = IB_SPEED_FDR10;
 732         }
 733
 734         /* Avoid wrong speed value returned by FW if the IB link is down. */
 735         if (props->state == IB_PORT_DOWN)
 736                  props->active_speed = IB_SPEED_SDR;
 737
 738 out:
 739         kfree(in_mad);
 740         kfree(out_mad);
 741         return err;
 742 }
 743
 744 static u8 state_to_phys_state(enum ib_port_state state)
 745 {
 746         return state == IB_PORT_ACTIVE ? 5 : 3;
 747 }
 748
 749 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 750                                struct ib_port_attr *props)
 751 {
 752
 753         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 754         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 755         struct net_device *ndev;
 756         enum ib_mtu tmp;
 757         struct mlx4_cmd_mailbox *mailbox;
 758         int err = 0;
 759         int is_bonded = mlx4_is_bonded(mdev->dev);
 760
 761         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 762         if (IS_ERR(mailbox))
 763                 return PTR_ERR(mailbox);
 764
 765         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 766                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 767                            MLX4_CMD_WRAPPED);
 768         if (err)
 769                 goto out;
 770
 771         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ||
 772                                    (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 773                                            IB_WIDTH_4X : IB_WIDTH_1X;
 774         props->active_speed     =  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 775                                            IB_SPEED_FDR : IB_SPEED_QDR;
 776         props->port_cap_flags   = IB_PORT_CM_SUP;
 777         props->ip_gids = true;
 778         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 779         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 780         props->pkey_tbl_len     = 1;
 781         props->max_mtu          = IB_MTU_4096;
 782         props->max_vl_num       = 2;
 783         props->state            = IB_PORT_DOWN;
 784         props->phys_state       = state_to_phys_state(props->state);
 785         props->active_mtu       = IB_MTU_256;
 786         spin_lock_bh(&iboe->lock);
 787         ndev = iboe->netdevs[port - 1];
 788         if (ndev && is_bonded) {
 789                 rcu_read_lock(); /* required to get upper dev */
 790                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 791                 rcu_read_unlock();
 792         }
 793         if (!ndev)
 794                 goto out_unlock;
 795
 796         tmp = iboe_get_mtu(ndev->mtu);
 797         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 798
 799         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 800                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 801         props->phys_state       = state_to_phys_state(props->state);
 802 out_unlock:
 803         spin_unlock_bh(&iboe->lock);
 804 out:
 805         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 806         return err;
 807 }
 808
 809 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 810                          struct ib_port_attr *props, int netw_view)
 811 {
 812         int err;
 813
 814         /* props being zeroed by the caller, avoid zeroing it here */
 815
 816         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 817                 ib_link_query_port(ibdev, port, props, netw_view) :
 818                                 eth_link_query_port(ibdev, port, props);
 819
 820         return err;
 821 }
 822
 823 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 824                               struct ib_port_attr *props)
 825 {
 826         /* returns host view */
 827         return __mlx4_ib_query_port(ibdev, port, props, 0);
 828 }
 829
 830 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 831                         union ib_gid *gid, int netw_view)
 832 {
 833         struct ib_smp *in_mad  = NULL;
 834         struct ib_smp *out_mad = NULL;
 835         int err = -ENOMEM;
 836         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 837         int clear = 0;
 838         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 839
 840         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 841         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 842         if (!in_mad || !out_mad)
 843                 goto out;
 844
 845         init_query_mad(in_mad);
 846         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 847         in_mad->attr_mod = cpu_to_be32(port);
 848
 849         if (mlx4_is_mfunc(dev->dev) && netw_view)
 850                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 851
 852         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 853         if (err)
 854                 goto out;
 855
 856         memcpy(gid->raw, out_mad->data + 8, 8);
 857
 858         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 859                 if (index) {
 860                         /* For any index > 0, return the null guid */
 861                         err = 0;
 862                         clear = 1;
 863                         goto out;
 864                 }
 865         }
 866
 867         init_query_mad(in_mad);
 868         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 869         in_mad->attr_mod = cpu_to_be32(index / 8);
 870
 871         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 872                            NULL, NULL, in_mad, out_mad);
 873         if (err)
 874                 goto out;
 875
 876         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 877
 878 out:
 879         if (clear)
 880                 memset(gid->raw + 8, 0, 8);
 881         kfree(in_mad);
 882         kfree(out_mad);
 883         return err;
 884 }
 885
 886 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 887                              union ib_gid *gid)
 888 {
 889         if (rdma_protocol_ib(ibdev, port))
 890                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 891         return 0;
 892 }
 893
 894 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
 895 {
 896         union sl2vl_tbl_to_u64 sl2vl64;
 897         struct ib_smp *in_mad  = NULL;
 898         struct ib_smp *out_mad = NULL;
 899         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 900         int err = -ENOMEM;
 901         int jj;
 902
 903         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 904                 *sl2vl_tbl = 0;
 905                 return 0;
 906         }
 907
 908         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 909         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 910         if (!in_mad || !out_mad)
 911                 goto out;
 912
 913         init_query_mad(in_mad);
 914         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 915         in_mad->attr_mod = 0;
 916
 917         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 918                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 919
 920         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 921                            in_mad, out_mad);
 922         if (err)
 923                 goto out;
 924
 925         for (jj = 0; jj < 8; jj++)
 926                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 927         *sl2vl_tbl = sl2vl64.sl64;
 928
 929 out:
 930         kfree(in_mad);
 931         kfree(out_mad);
 932         return err;
 933 }
 934
 935 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 936 {
 937         u64 sl2vl;
 938         int i;
 939         int err;
 940
 941         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 942                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 943                         continue;
 944                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 945                 if (err) {
 946                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 947                                i, err);
 948                         sl2vl = 0;
 949                 }
 950                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 951         }
 952 }
 953
 954 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 955                          u16 *pkey, int netw_view)
 956 {
 957         struct ib_smp *in_mad  = NULL;
 958         struct ib_smp *out_mad = NULL;
 959         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 960         int err = -ENOMEM;
 961
 962         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 963         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 964         if (!in_mad || !out_mad)
 965                 goto out;
 966
 967         init_query_mad(in_mad);
 968         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 969         in_mad->attr_mod = cpu_to_be32(index / 32);
 970
 971         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 972                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 973
 974         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 975                            in_mad, out_mad);
 976         if (err)
 977                 goto out;
 978
 979         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 980
 981 out:
 982         kfree(in_mad);
 983         kfree(out_mad);
 984         return err;
 985 }
 986
 987 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 988 {
 989         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 990 }
 991
 992 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 993                                  struct ib_device_modify *props)
 994 {
 995         struct mlx4_cmd_mailbox *mailbox;
 996         unsigned long flags;
 997
 998         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 999                 return -EOPNOTSUPP;
1000
1001         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
1002                 return 0;
1003
1004         if (mlx4_is_slave(to_mdev(ibdev)->dev))
1005                 return -EOPNOTSUPP;
1006
1007         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
1008         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1009         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
1010
1011         /*
1012          * If possible, pass node desc to FW, so it can generate
1013          * a 144 trap.  If cmd fails, just ignore.
1014          */
1015         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
1016         if (IS_ERR(mailbox))
1017                 return 0;
1018
1019         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1020         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
1021                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1022
1023         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
1024
1025         return 0;
1026 }
1027
1028 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
1029                             u32 cap_mask)
1030 {
1031         struct mlx4_cmd_mailbox *mailbox;
1032         int err;
1033
1034         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
1035         if (IS_ERR(mailbox))
1036                 return PTR_ERR(mailbox);
1037
1038         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1039                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
1040                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
1041         } else {
1042                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
1043                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
1044         }
1045
1046         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
1047                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1048                        MLX4_CMD_WRAPPED);
1049
1050         mlx4_free_cmd_mailbox(dev->dev, mailbox);
1051         return err;
1052 }
1053
1054 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1055                                struct ib_port_modify *props)
1056 {
1057         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1058         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1059         struct ib_port_attr attr;
1060         u32 cap_mask;
1061         int err;
1062
1063         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1064          * of whether port link layer is ETH or IB. For ETH ports, qkey
1065          * violations and port capabilities are not meaningful.
1066          */
1067         if (is_eth)
1068                 return 0;
1069
1070         mutex_lock(&mdev->cap_mask_mutex);
1071
1072         err = ib_query_port(ibdev, port, &attr);
1073         if (err)
1074                 goto out;
1075
1076         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1077                 ~props->clr_port_cap_mask;
1078
1079         err = mlx4_ib_SET_PORT(mdev, port,
1080                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1081                                cap_mask);
1082
1083 out:
1084         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1085         return err;
1086 }
1087
1088 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
1089                                                   struct ib_udata *udata)
1090 {
1091         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1092         struct mlx4_ib_ucontext *context;
1093         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1094         struct mlx4_ib_alloc_ucontext_resp resp;
1095         int err;
1096
1097         if (!dev->ib_active)
1098                 return ERR_PTR(-EAGAIN);
1099
1100         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1101                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1102                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1103                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1104         } else {
1105                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1106                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1107                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1108                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1109                 resp.cqe_size         = dev->dev->caps.cqe_size;
1110         }
1111
1112         context = kzalloc(sizeof(*context), GFP_KERNEL);
1113         if (!context)
1114                 return ERR_PTR(-ENOMEM);
1115
1116         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1117         if (err) {
1118                 kfree(context);
1119                 return ERR_PTR(err);
1120         }
1121
1122         INIT_LIST_HEAD(&context->db_page_list);
1123         mutex_init(&context->db_page_mutex);
1124
1125         INIT_LIST_HEAD(&context->wqn_ranges_list);
1126         mutex_init(&context->wqn_ranges_mutex);
1127
1128         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1129                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1130         else
1131                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1132
1133         if (err) {
1134                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1135                 kfree(context);
1136                 return ERR_PTR(-EFAULT);
1137         }
1138
1139         return &context->ibucontext;
1140 }
1141
1142 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1143 {
1144         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1145
1146         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1147         kfree(context);
1148
1149         return 0;
1150 }
1151
1152 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
1153 {
1154         /* vma_open is called when a new VMA is created on top of our VMA.
1155          * This is done through either mremap flow or split_vma (usually due
1156          * to mlock, madvise, munmap, etc.). We do not support a clone of the
1157          * vma, as this VMA is strongly hardware related. Therefore we set the
1158          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1159          * calling us again and trying to do incorrect actions. We assume that
1160          * the original vma size is exactly a single page that there will be no
1161          * "splitting" operations on.
1162          */
1163         area->vm_ops = NULL;
1164 }
1165
1166 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
1167 {
1168         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1169
1170         /* It's guaranteed that all VMAs opened on a FD are closed before the
1171          * file itself is closed, therefore no sync is needed with the regular
1172          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1173          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1174          * The close operation is usually called under mm->mmap_sem except when
1175          * process is exiting.  The exiting case is handled explicitly as part
1176          * of mlx4_ib_disassociate_ucontext.
1177          */
1178         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1179                                 area->vm_private_data;
1180
1181         /* set the vma context pointer to null in the mlx4_ib driver's private
1182          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1183          */
1184         mlx4_ib_vma_priv_data->vma = NULL;
1185 }
1186
1187 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1188         .open = mlx4_ib_vma_open,
1189         .close = mlx4_ib_vma_close
1190 };
1191
1192 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1193 {
1194         int i;
1195         struct vm_area_struct *vma;
1196         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1197
1198         /* need to protect from a race on closing the vma as part of
1199          * mlx4_ib_vma_close().
1200          */
1201         for (i = 0; i < HW_BAR_COUNT; i++) {
1202                 vma = context->hw_bar_info[i].vma;
1203                 if (!vma)
1204                         continue;
1205
1206                 zap_vma_ptes(context->hw_bar_info[i].vma,
1207                              context->hw_bar_info[i].vma->vm_start, PAGE_SIZE);
1208
1209                 context->hw_bar_info[i].vma->vm_flags &=
1210                         ~(VM_SHARED | VM_MAYSHARE);
1211                 /* context going to be destroyed, should not access ops any more */
1212                 context->hw_bar_info[i].vma->vm_ops = NULL;
1213         }
1214 }
1215
1216 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1217                                  struct mlx4_ib_vma_private_data *vma_private_data)
1218 {
1219         vma_private_data->vma = vma;
1220         vma->vm_private_data = vma_private_data;
1221         vma->vm_ops =  &mlx4_ib_vm_ops;
1222 }
1223
1224 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1225 {
1226         struct mlx4_ib_dev *dev = to_mdev(context->device);
1227         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1228
1229         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1230                 return -EINVAL;
1231
1232         if (vma->vm_pgoff == 0) {
1233                 /* We prevent double mmaping on same context */
1234                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1235                         return -EINVAL;
1236
1237                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1238
1239                 if (io_remap_pfn_range(vma, vma->vm_start,
1240                                        to_mucontext(context)->uar.pfn,
1241                                        PAGE_SIZE, vma->vm_page_prot))
1242                         return -EAGAIN;
1243
1244                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1245
1246         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1247                 /* We prevent double mmaping on same context */
1248                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1249                         return -EINVAL;
1250
1251                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1252
1253                 if (io_remap_pfn_range(vma, vma->vm_start,
1254                                        to_mucontext(context)->uar.pfn +
1255                                        dev->dev->caps.num_uars,
1256                                        PAGE_SIZE, vma->vm_page_prot))
1257                         return -EAGAIN;
1258
1259                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1260
1261         } else if (vma->vm_pgoff == 3) {
1262                 struct mlx4_clock_params params;
1263                 int ret;
1264
1265                 /* We prevent double mmaping on same context */
1266                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1267                         return -EINVAL;
1268
1269                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1270
1271                 if (ret)
1272                         return ret;
1273
1274                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1275                 if (io_remap_pfn_range(vma, vma->vm_start,
1276                                        (pci_resource_start(dev->dev->persist->pdev,
1277                                                            params.bar) +
1278                                         params.offset)
1279                                        >> PAGE_SHIFT,
1280                                        PAGE_SIZE, vma->vm_page_prot))
1281                         return -EAGAIN;
1282
1283                 mlx4_ib_set_vma_data(vma,
1284                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1285         } else {
1286                 return -EINVAL;
1287         }
1288
1289         return 0;
1290 }
1291
1292 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1293                                       struct ib_ucontext *context,
1294                                       struct ib_udata *udata)
1295 {
1296         struct mlx4_ib_pd *pd;
1297         int err;
1298
1299         pd = kzalloc(sizeof(*pd), GFP_KERNEL);
1300         if (!pd)
1301                 return ERR_PTR(-ENOMEM);
1302
1303         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1304         if (err) {
1305                 kfree(pd);
1306                 return ERR_PTR(err);
1307         }
1308
1309         if (context)
1310                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1311                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1312                         kfree(pd);
1313                         return ERR_PTR(-EFAULT);
1314                 }
1315         return &pd->ibpd;
1316 }
1317
1318 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1319 {
1320         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1321         kfree(pd);
1322
1323         return 0;
1324 }
1325
1326 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1327                                           struct ib_ucontext *context,
1328                                           struct ib_udata *udata)
1329 {
1330         struct mlx4_ib_xrcd *xrcd;
1331         struct ib_cq_init_attr cq_attr = {};
1332         int err;
1333
1334         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1335                 return ERR_PTR(-ENOSYS);
1336
1337         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1338         if (!xrcd)
1339                 return ERR_PTR(-ENOMEM);
1340
1341         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1342         if (err)
1343                 goto err1;
1344
1345         xrcd->pd = ib_alloc_pd(ibdev, 0);
1346         if (IS_ERR(xrcd->pd)) {
1347                 err = PTR_ERR(xrcd->pd);
1348                 goto err2;
1349         }
1350
1351         cq_attr.cqe = 1;
1352         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1353         if (IS_ERR(xrcd->cq)) {
1354                 err = PTR_ERR(xrcd->cq);
1355                 goto err3;
1356         }
1357
1358         return &xrcd->ibxrcd;
1359
1360 err3:
1361         ib_dealloc_pd(xrcd->pd);
1362 err2:
1363         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1364 err1:
1365         kfree(xrcd);
1366         return ERR_PTR(err);
1367 }
1368
1369 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1370 {
1371         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1372         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1373         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1374         kfree(xrcd);
1375
1376         return 0;
1377 }
1378
1379 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1380 {
1381         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1382         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1383         struct mlx4_ib_gid_entry *ge;
1384
1385         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1386         if (!ge)
1387                 return -ENOMEM;
1388
1389         ge->gid = *gid;
1390         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1391                 ge->port = mqp->port;
1392                 ge->added = 1;
1393         }
1394
1395         mutex_lock(&mqp->mutex);
1396         list_add_tail(&ge->list, &mqp->gid_list);
1397         mutex_unlock(&mqp->mutex);
1398
1399         return 0;
1400 }
1401
1402 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1403                                           struct mlx4_ib_counters *ctr_table)
1404 {
1405         struct counter_index *counter, *tmp_count;
1406
1407         mutex_lock(&ctr_table->mutex);
1408         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1409                                  list) {
1410                 if (counter->allocated)
1411                         mlx4_counter_free(ibdev->dev, counter->index);
1412                 list_del(&counter->list);
1413                 kfree(counter);
1414         }
1415         mutex_unlock(&ctr_table->mutex);
1416 }
1417
1418 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1419                    union ib_gid *gid)
1420 {
1421         struct net_device *ndev;
1422         int ret = 0;
1423
1424         if (!mqp->port)
1425                 return 0;
1426
1427         spin_lock_bh(&mdev->iboe.lock);
1428         ndev = mdev->iboe.netdevs[mqp->port - 1];
1429         if (ndev)
1430                 dev_hold(ndev);
1431         spin_unlock_bh(&mdev->iboe.lock);
1432
1433         if (ndev) {
1434                 ret = 1;
1435                 dev_put(ndev);
1436         }
1437
1438         return ret;
1439 }
1440
1441 struct mlx4_ib_steering {
1442         struct list_head list;
1443         struct mlx4_flow_reg_id reg_id;
1444         union ib_gid gid;
1445 };
1446
1447 #define LAST_ETH_FIELD vlan_tag
1448 #define LAST_IB_FIELD sl
1449 #define LAST_IPV4_FIELD dst_ip
1450 #define LAST_TCP_UDP_FIELD src_port
1451
1452 /* Field is the last supported field */
1453 #define FIELDS_NOT_SUPPORTED(filter, field)\
1454         memchr_inv((void *)&filter.field  +\
1455                    sizeof(filter.field), 0,\
1456                    sizeof(filter) -\
1457                    offsetof(typeof(filter), field) -\
1458                    sizeof(filter.field))
1459
1460 static int parse_flow_attr(struct mlx4_dev *dev,
1461                            u32 qp_num,
1462                            union ib_flow_spec *ib_spec,
1463                            struct _rule_hw *mlx4_spec)
1464 {
1465         enum mlx4_net_trans_rule_id type;
1466
1467         switch (ib_spec->type) {
1468         case IB_FLOW_SPEC_ETH:
1469                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1470                         return -ENOTSUPP;
1471
1472                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1473                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1474                        ETH_ALEN);
1475                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1476                        ETH_ALEN);
1477                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1478                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1479                 break;
1480         case IB_FLOW_SPEC_IB:
1481                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1482                         return -ENOTSUPP;
1483
1484                 type = MLX4_NET_TRANS_RULE_ID_IB;
1485                 mlx4_spec->ib.l3_qpn =
1486                         cpu_to_be32(qp_num);
1487                 mlx4_spec->ib.qpn_mask =
1488                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1489                 break;
1490
1491
1492         case IB_FLOW_SPEC_IPV4:
1493                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1494                         return -ENOTSUPP;
1495
1496                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1497                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1498                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1499                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1500                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1501                 break;
1502
1503         case IB_FLOW_SPEC_TCP:
1504         case IB_FLOW_SPEC_UDP:
1505                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1506                         return -ENOTSUPP;
1507
1508                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1509                                         MLX4_NET_TRANS_RULE_ID_TCP :
1510                                         MLX4_NET_TRANS_RULE_ID_UDP;
1511                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1512                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1513                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1514                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1515                 break;
1516
1517         default:
1518                 return -EINVAL;
1519         }
1520         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1521             mlx4_hw_rule_sz(dev, type) < 0)
1522                 return -EINVAL;
1523         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1524         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1525         return mlx4_hw_rule_sz(dev, type);
1526 }
1527
1528 struct default_rules {
1529         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1530         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1531         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1532         __u8  link_layer;
1533 };
1534 static const struct default_rules default_table[] = {
1535         {
1536                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1537                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1538                 .rules_create_list = {IB_FLOW_SPEC_IB},
1539                 .link_layer = IB_LINK_LAYER_INFINIBAND
1540         }
1541 };
1542
1543 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1544                                          struct ib_flow_attr *flow_attr)
1545 {
1546         int i, j, k;
1547         void *ib_flow;
1548         const struct default_rules *pdefault_rules = default_table;
1549         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1550
1551         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1552                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1553                 memset(&field_types, 0, sizeof(field_types));
1554
1555                 if (link_layer != pdefault_rules->link_layer)
1556                         continue;
1557
1558                 ib_flow = flow_attr + 1;
1559                 /* we assume the specs are sorted */
1560                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1561                      j < flow_attr->num_of_specs; k++) {
1562                         union ib_flow_spec *current_flow =
1563                                 (union ib_flow_spec *)ib_flow;
1564
1565                         /* same layer but different type */
1566                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1567                              (pdefault_rules->mandatory_fields[k] &
1568                               IB_FLOW_SPEC_LAYER_MASK)) &&
1569                             (current_flow->type !=
1570                              pdefault_rules->mandatory_fields[k]))
1571                                 goto out;
1572
1573                         /* same layer, try match next one */
1574                         if (current_flow->type ==
1575                             pdefault_rules->mandatory_fields[k]) {
1576                                 j++;
1577                                 ib_flow +=
1578                                         ((union ib_flow_spec *)ib_flow)->size;
1579                         }
1580                 }
1581
1582                 ib_flow = flow_attr + 1;
1583                 for (j = 0; j < flow_attr->num_of_specs;
1584                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1585                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1586                                 /* same layer and same type */
1587                                 if (((union ib_flow_spec *)ib_flow)->type ==
1588                                     pdefault_rules->mandatory_not_fields[k])
1589                                         goto out;
1590
1591                 return i;
1592         }
1593 out:
1594         return -1;
1595 }
1596
1597 static int __mlx4_ib_create_default_rules(
1598                 struct mlx4_ib_dev *mdev,
1599                 struct ib_qp *qp,
1600                 const struct default_rules *pdefault_rules,
1601                 struct _rule_hw *mlx4_spec) {
1602         int size = 0;
1603         int i;
1604
1605         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1606                 union ib_flow_spec ib_spec = {};
1607                 int ret;
1608
1609                 switch (pdefault_rules->rules_create_list[i]) {
1610                 case 0:
1611                         /* no rule */
1612                         continue;
1613                 case IB_FLOW_SPEC_IB:
1614                         ib_spec.type = IB_FLOW_SPEC_IB;
1615                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1616
1617                         break;
1618                 default:
1619                         /* invalid rule */
1620                         return -EINVAL;
1621                 }
1622                 /* We must put empty rule, qpn is being ignored */
1623                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1624                                       mlx4_spec);
1625                 if (ret < 0) {
1626                         pr_info("invalid parsing\n");
1627                         return -EINVAL;
1628                 }
1629
1630                 mlx4_spec = (void *)mlx4_spec + ret;
1631                 size += ret;
1632         }
1633         return size;
1634 }
1635
1636 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1637                           int domain,
1638                           enum mlx4_net_trans_promisc_mode flow_type,
1639                           u64 *reg_id)
1640 {
1641         int ret, i;
1642         int size = 0;
1643         void *ib_flow;
1644         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1645         struct mlx4_cmd_mailbox *mailbox;
1646         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1647         int default_flow;
1648
1649         static const u16 __mlx4_domain[] = {
1650                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1651                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1652                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1653                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1654         };
1655
1656         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1657                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1658                 return -EINVAL;
1659         }
1660
1661         if (domain >= IB_FLOW_DOMAIN_NUM) {
1662                 pr_err("Invalid domain value %d\n", domain);
1663                 return -EINVAL;
1664         }
1665
1666         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1667                 return -EINVAL;
1668
1669         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1670         if (IS_ERR(mailbox))
1671                 return PTR_ERR(mailbox);
1672         ctrl = mailbox->buf;
1673
1674         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1675                                  flow_attr->priority);
1676         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1677         ctrl->port = flow_attr->port;
1678         ctrl->qpn = cpu_to_be32(qp->qp_num);
1679
1680         ib_flow = flow_attr + 1;
1681         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1682         /* Add default flows */
1683         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1684         if (default_flow >= 0) {
1685                 ret = __mlx4_ib_create_default_rules(
1686                                 mdev, qp, default_table + default_flow,
1687                                 mailbox->buf + size);
1688                 if (ret < 0) {
1689                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1690                         return -EINVAL;
1691                 }
1692                 size += ret;
1693         }
1694         for (i = 0; i < flow_attr->num_of_specs; i++) {
1695                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1696                                       mailbox->buf + size);
1697                 if (ret < 0) {
1698                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1699                         return -EINVAL;
1700                 }
1701                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1702                 size += ret;
1703         }
1704
1705         if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1706             flow_attr->num_of_specs == 1) {
1707                 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1708                 enum ib_flow_spec_type header_spec =
1709                         ((union ib_flow_spec *)(flow_attr + 1))->type;
1710
1711                 if (header_spec == IB_FLOW_SPEC_ETH)
1712                         mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1713         }
1714
1715         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1716                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1717                            MLX4_CMD_NATIVE);
1718         if (ret == -ENOMEM)
1719                 pr_err("mcg table is full. Fail to register network rule.\n");
1720         else if (ret == -ENXIO)
1721                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1722         else if (ret)
1723                 pr_err("Invalid argument. Fail to register network rule.\n");
1724
1725         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1726         return ret;
1727 }
1728
1729 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1730 {
1731         int err;
1732         err = mlx4_cmd(dev, reg_id, 0, 0,
1733                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1734                        MLX4_CMD_NATIVE);
1735         if (err)
1736                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1737                        reg_id);
1738         return err;
1739 }
1740
1741 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1742                                     u64 *reg_id)
1743 {
1744         void *ib_flow;
1745         union ib_flow_spec *ib_spec;
1746         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1747         int err = 0;
1748
1749         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1750             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1751                 return 0; /* do nothing */
1752
1753         ib_flow = flow_attr + 1;
1754         ib_spec = (union ib_flow_spec *)ib_flow;
1755
1756         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1757                 return 0; /* do nothing */
1758
1759         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1760                                     flow_attr->port, qp->qp_num,
1761                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1762                                     reg_id);
1763         return err;
1764 }
1765
1766 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1767                                       struct ib_flow_attr *flow_attr,
1768                                       enum mlx4_net_trans_promisc_mode *type)
1769 {
1770         int err = 0;
1771
1772         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1773             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1774             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1775                 return -EOPNOTSUPP;
1776         }
1777
1778         if (flow_attr->num_of_specs == 0) {
1779                 type[0] = MLX4_FS_MC_SNIFFER;
1780                 type[1] = MLX4_FS_UC_SNIFFER;
1781         } else {
1782                 union ib_flow_spec *ib_spec;
1783
1784                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1785                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1786                         return -EINVAL;
1787
1788                 /* if all is zero than MC and UC */
1789                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1790                         type[0] = MLX4_FS_MC_SNIFFER;
1791                         type[1] = MLX4_FS_UC_SNIFFER;
1792                 } else {
1793                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1794                                             ib_spec->eth.mask.dst_mac[1],
1795                                             ib_spec->eth.mask.dst_mac[2],
1796                                             ib_spec->eth.mask.dst_mac[3],
1797                                             ib_spec->eth.mask.dst_mac[4],
1798                                             ib_spec->eth.mask.dst_mac[5]};
1799
1800                         /* Above xor was only on MC bit, non empty mask is valid
1801                          * only if this bit is set and rest are zero.
1802                          */
1803                         if (!is_zero_ether_addr(&mac[0]))
1804                                 return -EINVAL;
1805
1806                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1807                                 type[0] = MLX4_FS_MC_SNIFFER;
1808                         else
1809                                 type[0] = MLX4_FS_UC_SNIFFER;
1810                 }
1811         }
1812
1813         return err;
1814 }
1815
1816 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1817                                     struct ib_flow_attr *flow_attr,
1818                                     int domain, struct ib_udata *udata)
1819 {
1820         int err = 0, i = 0, j = 0;
1821         struct mlx4_ib_flow *mflow;
1822         enum mlx4_net_trans_promisc_mode type[2];
1823         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1824         int is_bonded = mlx4_is_bonded(dev);
1825
1826         if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1827                 return ERR_PTR(-EINVAL);
1828
1829         if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)
1830                 return ERR_PTR(-EOPNOTSUPP);
1831
1832         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1833             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1834                 return ERR_PTR(-EOPNOTSUPP);
1835
1836         if (udata &&
1837             udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen))
1838                 return ERR_PTR(-EOPNOTSUPP);
1839
1840         memset(type, 0, sizeof(type));
1841
1842         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1843         if (!mflow) {
1844                 err = -ENOMEM;
1845                 goto err_free;
1846         }
1847
1848         switch (flow_attr->type) {
1849         case IB_FLOW_ATTR_NORMAL:
1850                 /* If dont trap flag (continue match) is set, under specific
1851                  * condition traffic be replicated to given qp,
1852                  * without stealing it
1853                  */
1854                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1855                         err = mlx4_ib_add_dont_trap_rule(dev,
1856                                                          flow_attr,
1857                                                          type);
1858                         if (err)
1859                                 goto err_free;
1860                 } else {
1861                         type[0] = MLX4_FS_REGULAR;
1862                 }
1863                 break;
1864
1865         case IB_FLOW_ATTR_ALL_DEFAULT:
1866                 type[0] = MLX4_FS_ALL_DEFAULT;
1867                 break;
1868
1869         case IB_FLOW_ATTR_MC_DEFAULT:
1870                 type[0] = MLX4_FS_MC_DEFAULT;
1871                 break;
1872
1873         case IB_FLOW_ATTR_SNIFFER:
1874                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1875                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1876                 break;
1877
1878         default:
1879                 err = -EINVAL;
1880                 goto err_free;
1881         }
1882
1883         while (i < ARRAY_SIZE(type) && type[i]) {
1884                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1885                                             &mflow->reg_id[i].id);
1886                 if (err)
1887                         goto err_create_flow;
1888                 if (is_bonded) {
1889                         /* Application always sees one port so the mirror rule
1890                          * must be on port #2
1891                          */
1892                         flow_attr->port = 2;
1893                         err = __mlx4_ib_create_flow(qp, flow_attr,
1894                                                     domain, type[j],
1895                                                     &mflow->reg_id[j].mirror);
1896                         flow_attr->port = 1;
1897                         if (err)
1898                                 goto err_create_flow;
1899                         j++;
1900                 }
1901
1902                 i++;
1903         }
1904
1905         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1906                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1907                                                &mflow->reg_id[i].id);
1908                 if (err)
1909                         goto err_create_flow;
1910
1911                 if (is_bonded) {
1912                         flow_attr->port = 2;
1913                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1914                                                        &mflow->reg_id[j].mirror);
1915                         flow_attr->port = 1;
1916                         if (err)
1917                                 goto err_create_flow;
1918                         j++;
1919                 }
1920                 /* function to create mirror rule */
1921                 i++;
1922         }
1923
1924         return &mflow->ibflow;
1925
1926 err_create_flow:
1927         while (i) {
1928                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1929                                              mflow->reg_id[i].id);
1930                 i--;
1931         }
1932
1933         while (j) {
1934                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1935                                              mflow->reg_id[j].mirror);
1936                 j--;
1937         }
1938 err_free:
1939         kfree(mflow);
1940         return ERR_PTR(err);
1941 }
1942
1943 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1944 {
1945         int err, ret = 0;
1946         int i = 0;
1947         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1948         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1949
1950         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1951                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1952                 if (err)
1953                         ret = err;
1954                 if (mflow->reg_id[i].mirror) {
1955                         err = __mlx4_ib_destroy_flow(mdev->dev,
1956                                                      mflow->reg_id[i].mirror);
1957                         if (err)
1958                                 ret = err;
1959                 }
1960                 i++;
1961         }
1962
1963         kfree(mflow);
1964         return ret;
1965 }
1966
1967 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1968 {
1969         int err;
1970         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1971         struct mlx4_dev *dev = mdev->dev;
1972         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1973         struct mlx4_ib_steering *ib_steering = NULL;
1974         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1975         struct mlx4_flow_reg_id reg_id;
1976
1977         if (mdev->dev->caps.steering_mode ==
1978             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1979                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1980                 if (!ib_steering)
1981                         return -ENOMEM;
1982         }
1983
1984         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1985                                     !!(mqp->flags &
1986                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1987                                     prot, &reg_id.id);
1988         if (err) {
1989                 pr_err("multicast attach op failed, err %d\n", err);
1990                 goto err_malloc;
1991         }
1992
1993         reg_id.mirror = 0;
1994         if (mlx4_is_bonded(dev)) {
1995                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1996                                             (mqp->port == 1) ? 2 : 1,
1997                                             !!(mqp->flags &
1998                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1999                                             prot, &reg_id.mirror);
2000                 if (err)
2001                         goto err_add;
2002         }
2003
2004         err = add_gid_entry(ibqp, gid);
2005         if (err)
2006                 goto err_add;
2007
2008         if (ib_steering) {
2009                 memcpy(ib_steering->gid.raw, gid->raw, 16);
2010                 ib_steering->reg_id = reg_id;
2011                 mutex_lock(&mqp->mutex);
2012                 list_add(&ib_steering->list, &mqp->steering_rules);
2013                 mutex_unlock(&mqp->mutex);
2014         }
2015         return 0;
2016
2017 err_add:
2018         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2019                               prot, reg_id.id);
2020         if (reg_id.mirror)
2021                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2022                                       prot, reg_id.mirror);
2023 err_malloc:
2024         kfree(ib_steering);
2025
2026         return err;
2027 }
2028
2029 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
2030 {
2031         struct mlx4_ib_gid_entry *ge;
2032         struct mlx4_ib_gid_entry *tmp;
2033         struct mlx4_ib_gid_entry *ret = NULL;
2034
2035         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
2036                 if (!memcmp(raw, ge->gid.raw, 16)) {
2037                         ret = ge;
2038                         break;
2039                 }
2040         }
2041
2042         return ret;
2043 }
2044
2045 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2046 {
2047         int err;
2048         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
2049         struct mlx4_dev *dev = mdev->dev;
2050         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
2051         struct net_device *ndev;
2052         struct mlx4_ib_gid_entry *ge;
2053         struct mlx4_flow_reg_id reg_id = {0, 0};
2054         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
2055
2056         if (mdev->dev->caps.steering_mode ==
2057             MLX4_STEERING_MODE_DEVICE_MANAGED) {
2058                 struct mlx4_ib_steering *ib_steering;
2059
2060                 mutex_lock(&mqp->mutex);
2061                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
2062                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
2063                                 list_del(&ib_steering->list);
2064                                 break;
2065                         }
2066                 }
2067                 mutex_unlock(&mqp->mutex);
2068                 if (&ib_steering->list == &mqp->steering_rules) {
2069                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
2070                         return -EINVAL;
2071                 }
2072                 reg_id = ib_steering->reg_id;
2073                 kfree(ib_steering);
2074         }
2075
2076         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2077                                     prot, reg_id.id);
2078         if (err)
2079                 return err;
2080
2081         if (mlx4_is_bonded(dev)) {
2082                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2083                                             prot, reg_id.mirror);
2084                 if (err)
2085                         return err;
2086         }
2087
2088         mutex_lock(&mqp->mutex);
2089         ge = find_gid_entry(mqp, gid->raw);
2090         if (ge) {
2091                 spin_lock_bh(&mdev->iboe.lock);
2092                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
2093                 if (ndev)
2094                         dev_hold(ndev);
2095                 spin_unlock_bh(&mdev->iboe.lock);
2096                 if (ndev)
2097                         dev_put(ndev);
2098                 list_del(&ge->list);
2099                 kfree(ge);
2100         } else
2101                 pr_warn("could not find mgid entry\n");
2102
2103         mutex_unlock(&mqp->mutex);
2104
2105         return 0;
2106 }
2107
2108 static int init_node_data(struct mlx4_ib_dev *dev)
2109 {
2110         struct ib_smp *in_mad  = NULL;
2111         struct ib_smp *out_mad = NULL;
2112         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
2113         int err = -ENOMEM;
2114
2115         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
2116         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
2117         if (!in_mad || !out_mad)
2118                 goto out;
2119
2120         init_query_mad(in_mad);
2121         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
2122         if (mlx4_is_master(dev->dev))
2123                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2124
2125         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2126         if (err)
2127                 goto out;
2128
2129         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2130
2131         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2132
2133         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2134         if (err)
2135                 goto out;
2136
2137         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2138         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2139
2140 out:
2141         kfree(in_mad);
2142         kfree(out_mad);
2143         return err;
2144 }
2145
2146 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2147                         char *buf)
2148 {
2149         struct mlx4_ib_dev *dev =
2150                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2151         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2152 }
2153
2154 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2155                         char *buf)
2156 {
2157         struct mlx4_ib_dev *dev =
2158                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2159         return sprintf(buf, "%x\n", dev->dev->rev_id);
2160 }
2161
2162 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2163                           char *buf)
2164 {
2165         struct mlx4_ib_dev *dev =
2166                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2167         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2168                        dev->dev->board_id);
2169 }
2170
2171 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
2172 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
2173 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
2174
2175 static struct device_attribute *mlx4_class_attributes[] = {
2176         &dev_attr_hw_rev,
2177         &dev_attr_hca_type,
2178         &dev_attr_board_id
2179 };
2180
2181 struct diag_counter {
2182         const char *name;
2183         u32 offset;
2184 };
2185
2186 #define DIAG_COUNTER(_name, _offset)                    \
2187         { .name = #_name, .offset = _offset }
2188
2189 static const struct diag_counter diag_basic[] = {
2190         DIAG_COUNTER(rq_num_lle, 0x00),
2191         DIAG_COUNTER(sq_num_lle, 0x04),
2192         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2193         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2194         DIAG_COUNTER(rq_num_lpe, 0x18),
2195         DIAG_COUNTER(sq_num_lpe, 0x1C),
2196         DIAG_COUNTER(rq_num_wrfe, 0x20),
2197         DIAG_COUNTER(sq_num_wrfe, 0x24),
2198         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2199         DIAG_COUNTER(sq_num_bre, 0x34),
2200         DIAG_COUNTER(sq_num_rire, 0x44),
2201         DIAG_COUNTER(rq_num_rire, 0x48),
2202         DIAG_COUNTER(sq_num_rae, 0x4C),
2203         DIAG_COUNTER(rq_num_rae, 0x50),
2204         DIAG_COUNTER(sq_num_roe, 0x54),
2205         DIAG_COUNTER(sq_num_tree, 0x5C),
2206         DIAG_COUNTER(sq_num_rree, 0x64),
2207         DIAG_COUNTER(rq_num_rnr, 0x68),
2208         DIAG_COUNTER(sq_num_rnr, 0x6C),
2209         DIAG_COUNTER(rq_num_oos, 0x100),
2210         DIAG_COUNTER(sq_num_oos, 0x104),
2211 };
2212
2213 static const struct diag_counter diag_ext[] = {
2214         DIAG_COUNTER(rq_num_dup, 0x130),
2215         DIAG_COUNTER(sq_num_to, 0x134),
2216 };
2217
2218 static const struct diag_counter diag_device_only[] = {
2219         DIAG_COUNTER(num_cqovf, 0x1A0),
2220         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2221 };
2222
2223 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2224                                                     u8 port_num)
2225 {
2226         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2227         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2228
2229         if (!diag[!!port_num].name)
2230                 return NULL;
2231
2232         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2233                                           diag[!!port_num].num_counters,
2234                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2235 }
2236
2237 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2238                                 struct rdma_hw_stats *stats,
2239                                 u8 port, int index)
2240 {
2241         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2242         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2243         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2244                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2245         int ret;
2246         int i;
2247
2248         ret = mlx4_query_diag_counters(dev->dev,
2249                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2250                                        diag[!!port].offset, hw_value,
2251                                        diag[!!port].num_counters, port);
2252
2253         if (ret)
2254                 return ret;
2255
2256         for (i = 0; i < diag[!!port].num_counters; i++)
2257                 stats->value[i] = hw_value[i];
2258
2259         return diag[!!port].num_counters;
2260 }
2261
2262 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2263                                          const char ***name,
2264                                          u32 **offset,
2265                                          u32 *num,
2266                                          bool port)
2267 {
2268         u32 num_counters;
2269
2270         num_counters = ARRAY_SIZE(diag_basic);
2271
2272         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2273                 num_counters += ARRAY_SIZE(diag_ext);
2274
2275         if (!port)
2276                 num_counters += ARRAY_SIZE(diag_device_only);
2277
2278         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2279         if (!*name)
2280                 return -ENOMEM;
2281
2282         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2283         if (!*offset)
2284                 goto err_name;
2285
2286         *num = num_counters;
2287
2288         return 0;
2289
2290 err_name:
2291         kfree(*name);
2292         return -ENOMEM;
2293 }
2294
2295 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2296                                        const char **name,
2297                                        u32 *offset,
2298                                        bool port)
2299 {
2300         int i;
2301         int j;
2302
2303         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2304                 name[i] = diag_basic[i].name;
2305                 offset[i] = diag_basic[i].offset;
2306         }
2307
2308         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2309                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2310                         name[j] = diag_ext[i].name;
2311                         offset[j] = diag_ext[i].offset;
2312                 }
2313         }
2314
2315         if (!port) {
2316                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2317                         name[j] = diag_device_only[i].name;
2318                         offset[j] = diag_device_only[i].offset;
2319                 }
2320         }
2321 }
2322
2323 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2324 {
2325         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2326         int i;
2327         int ret;
2328         bool per_port = !!(ibdev->dev->caps.flags2 &
2329                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2330
2331         if (mlx4_is_slave(ibdev->dev))
2332                 return 0;
2333
2334         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2335                 /* i == 1 means we are building port counters */
2336                 if (i && !per_port)
2337                         continue;
2338
2339                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2340                                                     &diag[i].offset,
2341                                                     &diag[i].num_counters, i);
2342                 if (ret)
2343                         goto err_alloc;
2344
2345                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2346                                            diag[i].offset, i);
2347         }
2348
2349         ibdev->ib_dev.get_hw_stats      = mlx4_ib_get_hw_stats;
2350         ibdev->ib_dev.alloc_hw_stats    = mlx4_ib_alloc_hw_stats;
2351
2352         return 0;
2353
2354 err_alloc:
2355         if (i) {
2356                 kfree(diag[i - 1].name);
2357                 kfree(diag[i - 1].offset);
2358         }
2359
2360         return ret;
2361 }
2362
2363 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2364 {
2365         int i;
2366
2367         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2368                 kfree(ibdev->diag_counters[i].offset);
2369                 kfree(ibdev->diag_counters[i].name);
2370         }
2371 }
2372
2373 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2374 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2375                                struct net_device *dev,
2376                                int port)
2377 {
2378         u64 new_smac = 0;
2379         u64 release_mac = MLX4_IB_INVALID_MAC;
2380         struct mlx4_ib_qp *qp;
2381
2382         read_lock(&dev_base_lock);
2383         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2384         read_unlock(&dev_base_lock);
2385
2386         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2387
2388         /* no need for update QP1 and mac registration in non-SRIOV */
2389         if (!mlx4_is_mfunc(ibdev->dev))
2390                 return;
2391
2392         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2393         qp = ibdev->qp1_proxy[port - 1];
2394         if (qp) {
2395                 int new_smac_index;
2396                 u64 old_smac;
2397                 struct mlx4_update_qp_params update_params;
2398
2399                 mutex_lock(&qp->mutex);
2400                 old_smac = qp->pri.smac;
2401                 if (new_smac == old_smac)
2402                         goto unlock;
2403
2404                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2405
2406                 if (new_smac_index < 0)
2407                         goto unlock;
2408
2409                 update_params.smac_index = new_smac_index;
2410                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2411                                    &update_params)) {
2412                         release_mac = new_smac;
2413                         goto unlock;
2414                 }
2415                 /* if old port was zero, no mac was yet registered for this QP */
2416                 if (qp->pri.smac_port)
2417                         release_mac = old_smac;
2418                 qp->pri.smac = new_smac;
2419                 qp->pri.smac_port = port;
2420                 qp->pri.smac_index = new_smac_index;
2421         }
2422
2423 unlock:
2424         if (release_mac != MLX4_IB_INVALID_MAC)
2425                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2426         if (qp)
2427                 mutex_unlock(&qp->mutex);
2428         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2429 }
2430
2431 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2432                                  struct net_device *dev,
2433                                  unsigned long event)
2434
2435 {
2436         struct mlx4_ib_iboe *iboe;
2437         int update_qps_port = -1;
2438         int port;
2439
2440         ASSERT_RTNL();
2441
2442         iboe = &ibdev->iboe;
2443
2444         spin_lock_bh(&iboe->lock);
2445         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2446
2447                 iboe->netdevs[port - 1] =
2448                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2449
2450                 if (dev == iboe->netdevs[port - 1] &&
2451                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2452                      event == NETDEV_UP || event == NETDEV_CHANGE))
2453                         update_qps_port = port;
2454
2455         }
2456         spin_unlock_bh(&iboe->lock);
2457
2458         if (update_qps_port > 0)
2459                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2460 }
2461
2462 static int mlx4_ib_netdev_event(struct notifier_block *this,
2463                                 unsigned long event, void *ptr)
2464 {
2465         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2466         struct mlx4_ib_dev *ibdev;
2467
2468         if (!net_eq(dev_net(dev), &init_net))
2469                 return NOTIFY_DONE;
2470
2471         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2472         mlx4_ib_scan_netdevs(ibdev, dev, event);
2473
2474         return NOTIFY_DONE;
2475 }
2476
2477 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2478 {
2479         int port;
2480         int slave;
2481         int i;
2482
2483         if (mlx4_is_master(ibdev->dev)) {
2484                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2485                      ++slave) {
2486                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2487                                 for (i = 0;
2488                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2489                                      ++i) {
2490                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2491                                         /* master has the identity virt2phys pkey mapping */
2492                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2493                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2494                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2495                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2496                                 }
2497                         }
2498                 }
2499                 /* initialize pkey cache */
2500                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2501                         for (i = 0;
2502                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2503                              ++i)
2504                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2505                                         (i) ? 0 : 0xFFFF;
2506                 }
2507         }
2508 }
2509
2510 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2511 {
2512         int i, j, eq = 0, total_eqs = 0;
2513
2514         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2515                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2516         if (!ibdev->eq_table)
2517                 return;
2518
2519         for (i = 1; i <= dev->caps.num_ports; i++) {
2520                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2521                      j++, total_eqs++) {
2522                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2523                                 continue;
2524                         ibdev->eq_table[eq] = total_eqs;
2525                         if (!mlx4_assign_eq(dev, i,
2526                                             &ibdev->eq_table[eq]))
2527                                 eq++;
2528                         else
2529                                 ibdev->eq_table[eq] = -1;
2530                 }
2531         }
2532
2533         for (i = eq; i < dev->caps.num_comp_vectors;
2534              ibdev->eq_table[i++] = -1)
2535                 ;
2536
2537         /* Advertise the new number of EQs to clients */
2538         ibdev->ib_dev.num_comp_vectors = eq;
2539 }
2540
2541 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2542 {
2543         int i;
2544         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2545
2546         /* no eqs were allocated */
2547         if (!ibdev->eq_table)
2548                 return;
2549
2550         /* Reset the advertised EQ number */
2551         ibdev->ib_dev.num_comp_vectors = 0;
2552
2553         for (i = 0; i < total_eqs; i++)
2554                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2555
2556         kfree(ibdev->eq_table);
2557         ibdev->eq_table = NULL;
2558 }
2559
2560 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2561                                struct ib_port_immutable *immutable)
2562 {
2563         struct ib_port_attr attr;
2564         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2565         int err;
2566
2567         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2568                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2569                 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2570         } else {
2571                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2572                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2573                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2574                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2575                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2576                 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2577                 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2578                     RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2579                         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2580         }
2581
2582         err = ib_query_port(ibdev, port_num, &attr);
2583         if (err)
2584                 return err;
2585
2586         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2587         immutable->gid_tbl_len = attr.gid_tbl_len;
2588
2589         return 0;
2590 }
2591
2592 static void get_fw_ver_str(struct ib_device *device, char *str)
2593 {
2594         struct mlx4_ib_dev *dev =
2595                 container_of(device, struct mlx4_ib_dev, ib_dev);
2596         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
2597                  (int) (dev->dev->caps.fw_ver >> 32),
2598                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2599                  (int) dev->dev->caps.fw_ver & 0xffff);
2600 }
2601
2602 static void *mlx4_ib_add(struct mlx4_dev *dev)
2603 {
2604         struct mlx4_ib_dev *ibdev;
2605         int num_ports = 0;
2606         int i, j;
2607         int err;
2608         struct mlx4_ib_iboe *iboe;
2609         int ib_num_ports = 0;
2610         int num_req_counters;
2611         int allocated;
2612         u32 counter_index;
2613         struct counter_index *new_counter_index = NULL;
2614
2615         pr_info_once("%s", mlx4_ib_version);
2616
2617         num_ports = 0;
2618         mlx4_foreach_ib_transport_port(i, dev)
2619                 num_ports++;
2620
2621         /* No point in registering a device with no ports... */
2622         if (num_ports == 0)
2623                 return NULL;
2624
2625         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2626         if (!ibdev) {
2627                 dev_err(&dev->persist->pdev->dev,
2628                         "Device struct alloc failed\n");
2629                 return NULL;
2630         }
2631
2632         iboe = &ibdev->iboe;
2633
2634         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2635                 goto err_dealloc;
2636
2637         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2638                 goto err_pd;
2639
2640         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2641                                  PAGE_SIZE);
2642         if (!ibdev->uar_map)
2643                 goto err_uar;
2644         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2645
2646         ibdev->dev = dev;
2647         ibdev->bond_next_port   = 0;
2648
2649         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2650         ibdev->ib_dev.owner             = THIS_MODULE;
2651         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2652         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2653         ibdev->num_ports                = num_ports;
2654         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2655                                                 1 : ibdev->num_ports;
2656         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2657         ibdev->ib_dev.dev.parent        = &dev->persist->pdev->dev;
2658         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2659         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2660         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2661
2662         if (dev->caps.userspace_caps)
2663                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2664         else
2665                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2666
2667         ibdev->ib_dev.uverbs_cmd_mask   =
2668                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2669                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2670                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2671                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2672                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2673                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2674                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2675                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2676                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2677                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2678                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2679                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2680                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2681                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2682                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2683                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2684                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2685                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2686                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2687                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2688                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2689                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2690                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2691                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2692
2693         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2694         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2695         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2696         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2697         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2698         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2699         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2700         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2701         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2702         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2703         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2704         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2705         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2706         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2707         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2708         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2709         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2710         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2711         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2712         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2713         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2714         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2715         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2716         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2717         ibdev->ib_dev.drain_sq          = mlx4_ib_drain_sq;
2718         ibdev->ib_dev.drain_rq          = mlx4_ib_drain_rq;
2719         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2720         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2721         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2722         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2723         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2724         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2725         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2726         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2727         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2728         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2729         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2730         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2731         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2732         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2733         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2734         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2735         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2736         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2737         ibdev->ib_dev.get_dev_fw_str    = get_fw_ver_str;
2738         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2739
2740         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2741                 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ);
2742
2743         if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
2744             ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) ==
2745             IB_LINK_LAYER_ETHERNET) ||
2746             (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) ==
2747             IB_LINK_LAYER_ETHERNET))) {
2748                 ibdev->ib_dev.create_wq         = mlx4_ib_create_wq;
2749                 ibdev->ib_dev.modify_wq         = mlx4_ib_modify_wq;
2750                 ibdev->ib_dev.destroy_wq        = mlx4_ib_destroy_wq;
2751                 ibdev->ib_dev.create_rwq_ind_table  =
2752                         mlx4_ib_create_rwq_ind_table;
2753                 ibdev->ib_dev.destroy_rwq_ind_table =
2754                         mlx4_ib_destroy_rwq_ind_table;
2755                 ibdev->ib_dev.uverbs_ex_cmd_mask |=
2756                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ)          |
2757                         (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ)          |
2758                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ)         |
2759                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
2760                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
2761         }
2762
2763         if (!mlx4_is_slave(ibdev->dev)) {
2764                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2765                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2766                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2767                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2768         }
2769
2770         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2771             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2772                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2773                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2774
2775                 ibdev->ib_dev.uverbs_cmd_mask |=
2776                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2777                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2778         }
2779
2780         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2781                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2782                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2783                 ibdev->ib_dev.uverbs_cmd_mask |=
2784                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2785                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2786         }
2787
2788         if (check_flow_steering_support(dev)) {
2789                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2790                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2791                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2792
2793                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2794                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2795                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2796         }
2797
2798         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2799                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2800                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2801                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2802
2803         mlx4_ib_alloc_eqs(dev, ibdev);
2804
2805         spin_lock_init(&iboe->lock);
2806
2807         if (init_node_data(ibdev))
2808                 goto err_map;
2809         mlx4_init_sl2vl_tbl(ibdev);
2810
2811         for (i = 0; i < ibdev->num_ports; ++i) {
2812                 mutex_init(&ibdev->counters_table[i].mutex);
2813                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2814         }
2815
2816         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2817         for (i = 0; i < num_req_counters; ++i) {
2818                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2819                 allocated = 0;
2820                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2821                                                 IB_LINK_LAYER_ETHERNET) {
2822                         err = mlx4_counter_alloc(ibdev->dev, &counter_index,
2823                                                  MLX4_RES_USAGE_DRIVER);
2824                         /* if failed to allocate a new counter, use default */
2825                         if (err)
2826                                 counter_index =
2827                                         mlx4_get_default_counter_index(dev,
2828                                                                        i + 1);
2829                         else
2830                                 allocated = 1;
2831                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2832                         counter_index = mlx4_get_default_counter_index(dev,
2833                                                                        i + 1);
2834                 }
2835                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2836                                             GFP_KERNEL);
2837                 if (!new_counter_index) {
2838                         if (allocated)
2839                                 mlx4_counter_free(ibdev->dev, counter_index);
2840                         goto err_counter;
2841                 }
2842                 new_counter_index->index = counter_index;
2843                 new_counter_index->allocated = allocated;
2844                 list_add_tail(&new_counter_index->list,
2845                               &ibdev->counters_table[i].counters_list);
2846                 ibdev->counters_table[i].default_counter = counter_index;
2847                 pr_info("counter index %d for port %d allocated %d\n",
2848                         counter_index, i + 1, allocated);
2849         }
2850         if (mlx4_is_bonded(dev))
2851                 for (i = 1; i < ibdev->num_ports ; ++i) {
2852                         new_counter_index =
2853                                         kmalloc(sizeof(struct counter_index),
2854                                                 GFP_KERNEL);
2855                         if (!new_counter_index)
2856                                 goto err_counter;
2857                         new_counter_index->index = counter_index;
2858                         new_counter_index->allocated = 0;
2859                         list_add_tail(&new_counter_index->list,
2860                                       &ibdev->counters_table[i].counters_list);
2861                         ibdev->counters_table[i].default_counter =
2862                                                                 counter_index;
2863                 }
2864
2865         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2866                 ib_num_ports++;
2867
2868         spin_lock_init(&ibdev->sm_lock);
2869         mutex_init(&ibdev->cap_mask_mutex);
2870         INIT_LIST_HEAD(&ibdev->qp_list);
2871         spin_lock_init(&ibdev->reset_flow_resource_lock);
2872
2873         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2874             ib_num_ports) {
2875                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2876                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2877                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2878                                             &ibdev->steer_qpn_base, 0,
2879                                             MLX4_RES_USAGE_DRIVER);
2880                 if (err)
2881                         goto err_counter;
2882
2883                 ibdev->ib_uc_qpns_bitmap =
2884                         kmalloc_array(BITS_TO_LONGS(ibdev->steer_qpn_count),
2885                                       sizeof(long),
2886                                       GFP_KERNEL);
2887                 if (!ibdev->ib_uc_qpns_bitmap)
2888                         goto err_steer_qp_release;
2889
2890                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2891                         bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2892                                     ibdev->steer_qpn_count);
2893                         err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2894                                         dev, ibdev->steer_qpn_base,
2895                                         ibdev->steer_qpn_base +
2896                                         ibdev->steer_qpn_count - 1);
2897                         if (err)
2898                                 goto err_steer_free_bitmap;
2899                 } else {
2900                         bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2901                                     ibdev->steer_qpn_count);
2902                 }
2903         }
2904
2905         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2906                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2907
2908         if (mlx4_ib_alloc_diag_counters(ibdev))
2909                 goto err_steer_free_bitmap;
2910
2911         ibdev->ib_dev.driver_id = RDMA_DRIVER_MLX4;
2912         if (ib_register_device(&ibdev->ib_dev, NULL))
2913                 goto err_diag_counters;
2914
2915         if (mlx4_ib_mad_init(ibdev))
2916                 goto err_reg;
2917
2918         if (mlx4_ib_init_sriov(ibdev))
2919                 goto err_mad;
2920
2921         if (!iboe->nb.notifier_call) {
2922                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2923                 err = register_netdevice_notifier(&iboe->nb);
2924                 if (err) {
2925                         iboe->nb.notifier_call = NULL;
2926                         goto err_notif;
2927                 }
2928         }
2929         if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2930                 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2931                 if (err)
2932                         goto err_notif;
2933         }
2934
2935         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2936                 if (device_create_file(&ibdev->ib_dev.dev,
2937                                        mlx4_class_attributes[j]))
2938                         goto err_notif;
2939         }
2940
2941         ibdev->ib_active = true;
2942         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2943                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2944                                          &ibdev->ib_dev);
2945
2946         if (mlx4_is_mfunc(ibdev->dev))
2947                 init_pkeys(ibdev);
2948
2949         /* create paravirt contexts for any VFs which are active */
2950         if (mlx4_is_master(ibdev->dev)) {
2951                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2952                         if (j == mlx4_master_func_num(ibdev->dev))
2953                                 continue;
2954                         if (mlx4_is_slave_active(ibdev->dev, j))
2955                                 do_slave_init(ibdev, j, 1);
2956                 }
2957         }
2958         return ibdev;
2959
2960 err_notif:
2961         if (ibdev->iboe.nb.notifier_call) {
2962                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2963                         pr_warn("failure unregistering notifier\n");
2964                 ibdev->iboe.nb.notifier_call = NULL;
2965         }
2966         flush_workqueue(wq);
2967
2968         mlx4_ib_close_sriov(ibdev);
2969
2970 err_mad:
2971         mlx4_ib_mad_cleanup(ibdev);
2972
2973 err_reg:
2974         ib_unregister_device(&ibdev->ib_dev);
2975
2976 err_diag_counters:
2977         mlx4_ib_diag_cleanup(ibdev);
2978
2979 err_steer_free_bitmap:
2980         kfree(ibdev->ib_uc_qpns_bitmap);
2981
2982 err_steer_qp_release:
2983         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2984                               ibdev->steer_qpn_count);
2985 err_counter:
2986         for (i = 0; i < ibdev->num_ports; ++i)
2987                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2988
2989 err_map:
2990         mlx4_ib_free_eqs(dev, ibdev);
2991         iounmap(ibdev->uar_map);
2992
2993 err_uar:
2994         mlx4_uar_free(dev, &ibdev->priv_uar);
2995
2996 err_pd:
2997         mlx4_pd_free(dev, ibdev->priv_pdn);
2998
2999 err_dealloc:
3000         ib_dealloc_device(&ibdev->ib_dev);
3001
3002         return NULL;
3003 }
3004
3005 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
3006 {
3007         int offset;
3008
3009         WARN_ON(!dev->ib_uc_qpns_bitmap);
3010
3011         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
3012                                          dev->steer_qpn_count,
3013                                          get_count_order(count));
3014         if (offset < 0)
3015                 return offset;
3016
3017         *qpn = dev->steer_qpn_base + offset;
3018         return 0;
3019 }
3020
3021 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
3022 {
3023         if (!qpn ||
3024             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
3025                 return;
3026
3027         if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n",
3028                  qpn, dev->steer_qpn_base))
3029                 /* not supposed to be here */
3030                 return;
3031
3032         bitmap_release_region(dev->ib_uc_qpns_bitmap,
3033                               qpn - dev->steer_qpn_base,
3034                               get_count_order(count));
3035 }
3036
3037 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
3038                          int is_attach)
3039 {
3040         int err;
3041         size_t flow_size;
3042         struct ib_flow_attr *flow = NULL;
3043         struct ib_flow_spec_ib *ib_spec;
3044
3045         if (is_attach) {
3046                 flow_size = sizeof(struct ib_flow_attr) +
3047                             sizeof(struct ib_flow_spec_ib);
3048                 flow = kzalloc(flow_size, GFP_KERNEL);
3049                 if (!flow)
3050                         return -ENOMEM;
3051                 flow->port = mqp->port;
3052                 flow->num_of_specs = 1;
3053                 flow->size = flow_size;
3054                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
3055                 ib_spec->type = IB_FLOW_SPEC_IB;
3056                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
3057                 /* Add an empty rule for IB L2 */
3058                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
3059
3060                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
3061                                             IB_FLOW_DOMAIN_NIC,
3062                                             MLX4_FS_REGULAR,
3063                                             &mqp->reg_id);
3064         } else {
3065                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
3066         }
3067         kfree(flow);
3068         return err;
3069 }
3070
3071 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
3072 {
3073         struct mlx4_ib_dev *ibdev = ibdev_ptr;
3074         int p;
3075         int i;
3076
3077         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
3078                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
3079         ibdev->ib_active = false;
3080         flush_workqueue(wq);
3081
3082         if (ibdev->iboe.nb.notifier_call) {
3083                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
3084                         pr_warn("failure unregistering notifier\n");
3085                 ibdev->iboe.nb.notifier_call = NULL;
3086         }
3087
3088         mlx4_ib_close_sriov(ibdev);
3089         mlx4_ib_mad_cleanup(ibdev);
3090         ib_unregister_device(&ibdev->ib_dev);
3091         mlx4_ib_diag_cleanup(ibdev);
3092
3093         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3094                               ibdev->steer_qpn_count);
3095         kfree(ibdev->ib_uc_qpns_bitmap);
3096
3097         iounmap(ibdev->uar_map);
3098         for (p = 0; p < ibdev->num_ports; ++p)
3099                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3100
3101         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3102                 mlx4_CLOSE_PORT(dev, p);
3103
3104         mlx4_ib_free_eqs(dev, ibdev);
3105
3106         mlx4_uar_free(dev, &ibdev->priv_uar);
3107         mlx4_pd_free(dev, ibdev->priv_pdn);
3108         ib_dealloc_device(&ibdev->ib_dev);
3109 }
3110
3111 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3112 {
3113         struct mlx4_ib_demux_work **dm = NULL;
3114         struct mlx4_dev *dev = ibdev->dev;
3115         int i;
3116         unsigned long flags;
3117         struct mlx4_active_ports actv_ports;
3118         unsigned int ports;
3119         unsigned int first_port;
3120
3121         if (!mlx4_is_master(dev))
3122                 return;
3123
3124         actv_ports = mlx4_get_active_ports(dev, slave);
3125         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3126         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3127
3128         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3129         if (!dm)
3130                 return;
3131
3132         for (i = 0; i < ports; i++) {
3133                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3134                 if (!dm[i]) {
3135                         while (--i >= 0)
3136                                 kfree(dm[i]);
3137                         goto out;
3138                 }
3139                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3140                 dm[i]->port = first_port + i + 1;
3141                 dm[i]->slave = slave;
3142                 dm[i]->do_init = do_init;
3143                 dm[i]->dev = ibdev;
3144         }
3145         /* initialize or tear down tunnel QPs for the slave */
3146         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3147         if (!ibdev->sriov.is_going_down) {
3148                 for (i = 0; i < ports; i++)
3149                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3150                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3151         } else {
3152                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3153                 for (i = 0; i < ports; i++)
3154                         kfree(dm[i]);
3155         }
3156 out:
3157         kfree(dm);
3158         return;
3159 }
3160
3161 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3162 {
3163         struct mlx4_ib_qp *mqp;
3164         unsigned long flags_qp;
3165         unsigned long flags_cq;
3166         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3167         struct list_head    cq_notify_list;
3168         struct mlx4_cq *mcq;
3169         unsigned long flags;
3170
3171         pr_warn("mlx4_ib_handle_catas_error was started\n");
3172         INIT_LIST_HEAD(&cq_notify_list);
3173
3174         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3175         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3176
3177         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3178                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3179                 if (mqp->sq.tail != mqp->sq.head) {
3180                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3181                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3182                         if (send_mcq->mcq.comp &&
3183                             mqp->ibqp.send_cq->comp_handler) {
3184                                 if (!send_mcq->mcq.reset_notify_added) {
3185                                         send_mcq->mcq.reset_notify_added = 1;
3186                                         list_add_tail(&send_mcq->mcq.reset_notify,
3187                                                       &cq_notify_list);
3188                                 }
3189                         }
3190                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3191                 }
3192                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3193                 /* Now, handle the QP's receive queue */
3194                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3195                 /* no handling is needed for SRQ */
3196                 if (!mqp->ibqp.srq) {
3197                         if (mqp->rq.tail != mqp->rq.head) {
3198                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3199                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3200                                 if (recv_mcq->mcq.comp &&
3201                                     mqp->ibqp.recv_cq->comp_handler) {
3202                                         if (!recv_mcq->mcq.reset_notify_added) {
3203                                                 recv_mcq->mcq.reset_notify_added = 1;
3204                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3205                                                               &cq_notify_list);
3206                                         }
3207                                 }
3208                                 spin_unlock_irqrestore(&recv_mcq->lock,
3209                                                        flags_cq);
3210                         }
3211                 }
3212                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3213         }
3214
3215         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3216                 mcq->comp(mcq);
3217         }
3218         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3219         pr_warn("mlx4_ib_handle_catas_error ended\n");
3220 }
3221
3222 static void handle_bonded_port_state_event(struct work_struct *work)
3223 {
3224         struct ib_event_work *ew =
3225                 container_of(work, struct ib_event_work, work);
3226         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3227         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3228         int i;
3229         struct ib_event ibev;
3230
3231         kfree(ew);
3232         spin_lock_bh(&ibdev->iboe.lock);
3233         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3234                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3235                 enum ib_port_state curr_port_state;
3236
3237                 if (!curr_netdev)
3238                         continue;
3239
3240                 curr_port_state =
3241                         (netif_running(curr_netdev) &&
3242                          netif_carrier_ok(curr_netdev)) ?
3243                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3244
3245                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3246                         curr_port_state : IB_PORT_ACTIVE;
3247         }
3248         spin_unlock_bh(&ibdev->iboe.lock);
3249
3250         ibev.device = &ibdev->ib_dev;
3251         ibev.element.port_num = 1;
3252         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3253                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3254
3255         ib_dispatch_event(&ibev);
3256 }
3257
3258 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3259 {
3260         u64 sl2vl;
3261         int err;
3262
3263         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3264         if (err) {
3265                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3266                        port, err);
3267                 sl2vl = 0;
3268         }
3269         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3270 }
3271
3272 static void ib_sl2vl_update_work(struct work_struct *work)
3273 {
3274         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3275         struct mlx4_ib_dev *mdev = ew->ib_dev;
3276         int port = ew->port;
3277
3278         mlx4_ib_sl2vl_update(mdev, port);
3279
3280         kfree(ew);
3281 }
3282
3283 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3284                                      int port)
3285 {
3286         struct ib_event_work *ew;
3287
3288         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3289         if (ew) {
3290                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3291                 ew->port = port;
3292                 ew->ib_dev = ibdev;
3293                 queue_work(wq, &ew->work);
3294         }
3295 }
3296
3297 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3298                           enum mlx4_dev_event event, unsigned long param)
3299 {
3300         struct ib_event ibev;
3301         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3302         struct mlx4_eqe *eqe = NULL;
3303         struct ib_event_work *ew;
3304         int p = 0;
3305
3306         if (mlx4_is_bonded(dev) &&
3307             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3308             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3309                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3310                 if (!ew)
3311                         return;
3312                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3313                 ew->ib_dev = ibdev;
3314                 queue_work(wq, &ew->work);
3315                 return;
3316         }
3317
3318         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3319                 eqe = (struct mlx4_eqe *)param;
3320         else
3321                 p = (int) param;
3322
3323         switch (event) {
3324         case MLX4_DEV_EVENT_PORT_UP:
3325                 if (p > ibdev->num_ports)
3326                         return;
3327                 if (!mlx4_is_slave(dev) &&
3328                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3329                         IB_LINK_LAYER_INFINIBAND) {
3330                         if (mlx4_is_master(dev))
3331                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3332                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3333                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3334                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3335                 }
3336                 ibev.event = IB_EVENT_PORT_ACTIVE;
3337                 break;
3338
3339         case MLX4_DEV_EVENT_PORT_DOWN:
3340                 if (p > ibdev->num_ports)
3341                         return;
3342                 ibev.event = IB_EVENT_PORT_ERR;
3343                 break;
3344
3345         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3346                 ibdev->ib_active = false;
3347                 ibev.event = IB_EVENT_DEVICE_FATAL;
3348                 mlx4_ib_handle_catas_error(ibdev);
3349                 break;
3350
3351         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3352                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3353                 if (!ew)
3354                         return;
3355
3356                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3357                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3358                 ew->ib_dev = ibdev;
3359                 /* need to queue only for port owner, which uses GEN_EQE */
3360                 if (mlx4_is_master(dev))
3361                         queue_work(wq, &ew->work);
3362                 else
3363                         handle_port_mgmt_change_event(&ew->work);
3364                 return;
3365
3366         case MLX4_DEV_EVENT_SLAVE_INIT:
3367                 /* here, p is the slave id */
3368                 do_slave_init(ibdev, p, 1);
3369                 if (mlx4_is_master(dev)) {
3370                         int i;
3371
3372                         for (i = 1; i <= ibdev->num_ports; i++) {
3373                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3374                                         == IB_LINK_LAYER_INFINIBAND)
3375                                         mlx4_ib_slave_alias_guid_event(ibdev,
3376                                                                        p, i,
3377                                                                        1);
3378                         }
3379                 }
3380                 return;
3381
3382         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3383                 if (mlx4_is_master(dev)) {
3384                         int i;
3385
3386                         for (i = 1; i <= ibdev->num_ports; i++) {
3387                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3388                                         == IB_LINK_LAYER_INFINIBAND)
3389                                         mlx4_ib_slave_alias_guid_event(ibdev,
3390                                                                        p, i,
3391                                                                        0);
3392                         }
3393                 }
3394                 /* here, p is the slave id */
3395                 do_slave_init(ibdev, p, 0);
3396                 return;
3397
3398         default:
3399                 return;
3400         }
3401
3402         ibev.device           = ibdev_ptr;
3403         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3404
3405         ib_dispatch_event(&ibev);
3406 }
3407
3408 static struct mlx4_interface mlx4_ib_interface = {
3409         .add            = mlx4_ib_add,
3410         .remove         = mlx4_ib_remove,
3411         .event          = mlx4_ib_event,
3412         .protocol       = MLX4_PROT_IB_IPV6,
3413         .flags          = MLX4_INTFF_BONDING
3414 };
3415
3416 static int __init mlx4_ib_init(void)
3417 {
3418         int err;
3419
3420         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3421         if (!wq)
3422                 return -ENOMEM;
3423
3424         err = mlx4_ib_mcg_init();
3425         if (err)
3426                 goto clean_wq;
3427
3428         err = mlx4_register_interface(&mlx4_ib_interface);
3429         if (err)
3430                 goto clean_mcg;
3431
3432         return 0;
3433
3434 clean_mcg:
3435         mlx4_ib_mcg_destroy();
3436
3437 clean_wq:
3438         destroy_workqueue(wq);
3439         return err;
3440 }
3441
3442 static void __exit mlx4_ib_cleanup(void)
3443 {
3444         mlx4_unregister_interface(&mlx4_ib_interface);
3445         mlx4_ib_mcg_destroy();
3446         destroy_workqueue(wq);
3447 }
3448
3449 module_init(mlx4_ib_init);
3450 module_exit(mlx4_ib_cleanup);