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 <net/ipv6.h>
  43 #include <net/addrconf.h>
  44 #include <net/devlink.h>
  45
  46 #include <rdma/ib_smi.h>
  47 #include <rdma/ib_user_verbs.h>
  48 #include <rdma/ib_addr.h>
  49 #include <rdma/ib_cache.h>
  50
  51 #include <net/bonding.h>
  52
  53 #include <linux/mlx4/driver.h>
  54 #include <linux/mlx4/cmd.h>
  55 #include <linux/mlx4/qp.h>
  56
  57 #include "mlx4_ib.h"
  58 #include <rdma/mlx4-abi.h>
  59
  60 #define DRV_NAME        MLX4_IB_DRV_NAME
  61 #define DRV_VERSION     "2.2-1"
  62 #define DRV_RELDATE     "Feb 2014"
  63
  64 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  65 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  66 #define MLX4_IB_CARD_REV_A0   0xA0
  67
  68 MODULE_AUTHOR("Roland Dreier");
  69 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  70 MODULE_LICENSE("Dual BSD/GPL");
  71 MODULE_VERSION(DRV_VERSION);
  72
  73 int mlx4_ib_sm_guid_assign = 0;
  74 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  75 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  76
  77 static const char mlx4_ib_version[] =
  78         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  79         DRV_VERSION " (" DRV_RELDATE ")\n";
  80
  81 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  82
  83 static struct workqueue_struct *wq;
  84
  85 static void init_query_mad(struct ib_smp *mad)
  86 {
  87         mad->base_version  = 1;
  88         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  89         mad->class_version = 1;
  90         mad->method        = IB_MGMT_METHOD_GET;
  91 }
  92
  93 static int check_flow_steering_support(struct mlx4_dev *dev)
  94 {
  95         int eth_num_ports = 0;
  96         int ib_num_ports = 0;
  97
  98         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
  99
 100         if (dmfs) {
 101                 int i;
 102                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 103                         eth_num_ports++;
 104                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 105                         ib_num_ports++;
 106                 dmfs &= (!ib_num_ports ||
 107                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 108                         (!eth_num_ports ||
 109                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 110                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 111                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 112                         dmfs = 0;
 113                 }
 114         }
 115         return dmfs;
 116 }
 117
 118 static int num_ib_ports(struct mlx4_dev *dev)
 119 {
 120         int ib_ports = 0;
 121         int i;
 122
 123         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 124                 ib_ports++;
 125
 126         return ib_ports;
 127 }
 128
 129 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 130 {
 131         struct mlx4_ib_dev *ibdev = to_mdev(device);
 132         struct net_device *dev;
 133
 134         rcu_read_lock();
 135         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 136
 137         if (dev) {
 138                 if (mlx4_is_bonded(ibdev->dev)) {
 139                         struct net_device *upper = NULL;
 140
 141                         upper = netdev_master_upper_dev_get_rcu(dev);
 142                         if (upper) {
 143                                 struct net_device *active;
 144
 145                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 146                                 if (active)
 147                                         dev = active;
 148                         }
 149                 }
 150         }
 151         if (dev)
 152                 dev_hold(dev);
 153
 154         rcu_read_unlock();
 155         return dev;
 156 }
 157
 158 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 159                                   struct mlx4_ib_dev *ibdev,
 160                                   u8 port_num)
 161 {
 162         struct mlx4_cmd_mailbox *mailbox;
 163         int err;
 164         struct mlx4_dev *dev = ibdev->dev;
 165         int i;
 166         union ib_gid *gid_tbl;
 167
 168         mailbox = mlx4_alloc_cmd_mailbox(dev);
 169         if (IS_ERR(mailbox))
 170                 return -ENOMEM;
 171
 172         gid_tbl = mailbox->buf;
 173
 174         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 175                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 176
 177         err = mlx4_cmd(dev, mailbox->dma,
 178                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 179                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 180                        MLX4_CMD_WRAPPED);
 181         if (mlx4_is_bonded(dev))
 182                 err += mlx4_cmd(dev, mailbox->dma,
 183                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 184                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 185                                 MLX4_CMD_WRAPPED);
 186
 187         mlx4_free_cmd_mailbox(dev, mailbox);
 188         return err;
 189 }
 190
 191 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 192                                      struct mlx4_ib_dev *ibdev,
 193                                      u8 port_num)
 194 {
 195         struct mlx4_cmd_mailbox *mailbox;
 196         int err;
 197         struct mlx4_dev *dev = ibdev->dev;
 198         int i;
 199         struct {
 200                 union ib_gid    gid;
 201                 __be32          rsrvd1[2];
 202                 __be16          rsrvd2;
 203                 u8              type;
 204                 u8              version;
 205                 __be32          rsrvd3;
 206         } *gid_tbl;
 207
 208         mailbox = mlx4_alloc_cmd_mailbox(dev);
 209         if (IS_ERR(mailbox))
 210                 return -ENOMEM;
 211
 212         gid_tbl = mailbox->buf;
 213         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 214                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 215                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 216                         gid_tbl[i].version = 2;
 217                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 218                                 gid_tbl[i].type = 1;
 219                         else
 220                                 memset(&gid_tbl[i].gid, 0, 12);
 221                 }
 222         }
 223
 224         err = mlx4_cmd(dev, mailbox->dma,
 225                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 226                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 227                        MLX4_CMD_WRAPPED);
 228         if (mlx4_is_bonded(dev))
 229                 err += mlx4_cmd(dev, mailbox->dma,
 230                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 231                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 232                                 MLX4_CMD_WRAPPED);
 233
 234         mlx4_free_cmd_mailbox(dev, mailbox);
 235         return err;
 236 }
 237
 238 static int mlx4_ib_update_gids(struct gid_entry *gids,
 239                                struct mlx4_ib_dev *ibdev,
 240                                u8 port_num)
 241 {
 242         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 243                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 244
 245         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 246 }
 247
 248 static int mlx4_ib_add_gid(struct ib_device *device,
 249                            u8 port_num,
 250                            unsigned int index,
 251                            const union ib_gid *gid,
 252                            const struct ib_gid_attr *attr,
 253                            void **context)
 254 {
 255         struct mlx4_ib_dev *ibdev = to_mdev(device);
 256         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 257         struct mlx4_port_gid_table   *port_gid_table;
 258         int free = -1, found = -1;
 259         int ret = 0;
 260         int hw_update = 0;
 261         int i;
 262         struct gid_entry *gids = NULL;
 263
 264         if (!rdma_cap_roce_gid_table(device, port_num))
 265                 return -EINVAL;
 266
 267         if (port_num > MLX4_MAX_PORTS)
 268                 return -EINVAL;
 269
 270         if (!context)
 271                 return -EINVAL;
 272
 273         port_gid_table = &iboe->gids[port_num - 1];
 274         spin_lock_bh(&iboe->lock);
 275         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 276                 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
 277                     (port_gid_table->gids[i].gid_type == attr->gid_type))  {
 278                         found = i;
 279                         break;
 280                 }
 281                 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
 282                         free = i; /* HW has space */
 283         }
 284
 285         if (found < 0) {
 286                 if (free < 0) {
 287                         ret = -ENOSPC;
 288                 } else {
 289                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 290                         if (!port_gid_table->gids[free].ctx) {
 291                                 ret = -ENOMEM;
 292                         } else {
 293                                 *context = port_gid_table->gids[free].ctx;
 294                                 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
 295                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 296                                 port_gid_table->gids[free].ctx->real_index = free;
 297                                 port_gid_table->gids[free].ctx->refcount = 1;
 298                                 hw_update = 1;
 299                         }
 300                 }
 301         } else {
 302                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 303                 *context = ctx;
 304                 ctx->refcount++;
 305         }
 306         if (!ret && hw_update) {
 307                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 308                 if (!gids) {
 309                         ret = -ENOMEM;
 310                 } else {
 311                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 312                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 313                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 314                         }
 315                 }
 316         }
 317         spin_unlock_bh(&iboe->lock);
 318
 319         if (!ret && hw_update) {
 320                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 321                 kfree(gids);
 322         }
 323
 324         return ret;
 325 }
 326
 327 static int mlx4_ib_del_gid(struct ib_device *device,
 328                            u8 port_num,
 329                            unsigned int index,
 330                            void **context)
 331 {
 332         struct gid_cache_context *ctx = *context;
 333         struct mlx4_ib_dev *ibdev = to_mdev(device);
 334         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 335         struct mlx4_port_gid_table   *port_gid_table;
 336         int ret = 0;
 337         int hw_update = 0;
 338         struct gid_entry *gids = NULL;
 339
 340         if (!rdma_cap_roce_gid_table(device, port_num))
 341                 return -EINVAL;
 342
 343         if (port_num > MLX4_MAX_PORTS)
 344                 return -EINVAL;
 345
 346         port_gid_table = &iboe->gids[port_num - 1];
 347         spin_lock_bh(&iboe->lock);
 348         if (ctx) {
 349                 ctx->refcount--;
 350                 if (!ctx->refcount) {
 351                         unsigned int real_index = ctx->real_index;
 352
 353                         memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
 354                         kfree(port_gid_table->gids[real_index].ctx);
 355                         port_gid_table->gids[real_index].ctx = NULL;
 356                         hw_update = 1;
 357                 }
 358         }
 359         if (!ret && hw_update) {
 360                 int i;
 361
 362                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 363                 if (!gids) {
 364                         ret = -ENOMEM;
 365                 } else {
 366                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
 367                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 368                 }
 369         }
 370         spin_unlock_bh(&iboe->lock);
 371
 372         if (!ret && hw_update) {
 373                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 374                 kfree(gids);
 375         }
 376         return ret;
 377 }
 378
 379 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 380                                     u8 port_num, int index)
 381 {
 382         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 383         struct gid_cache_context *ctx = NULL;
 384         union ib_gid gid;
 385         struct mlx4_port_gid_table   *port_gid_table;
 386         int real_index = -EINVAL;
 387         int i;
 388         int ret;
 389         unsigned long flags;
 390         struct ib_gid_attr attr;
 391
 392         if (port_num > MLX4_MAX_PORTS)
 393                 return -EINVAL;
 394
 395         if (mlx4_is_bonded(ibdev->dev))
 396                 port_num = 1;
 397
 398         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 399                 return index;
 400
 401         ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
 402         if (ret)
 403                 return ret;
 404
 405         if (attr.ndev)
 406                 dev_put(attr.ndev);
 407
 408         if (!memcmp(&gid, &zgid, sizeof(gid)))
 409                 return -EINVAL;
 410
 411         spin_lock_irqsave(&iboe->lock, flags);
 412         port_gid_table = &iboe->gids[port_num - 1];
 413
 414         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 415                 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
 416                     attr.gid_type == port_gid_table->gids[i].gid_type) {
 417                         ctx = port_gid_table->gids[i].ctx;
 418                         break;
 419                 }
 420         if (ctx)
 421                 real_index = ctx->real_index;
 422         spin_unlock_irqrestore(&iboe->lock, flags);
 423         return real_index;
 424 }
 425
 426 static int mlx4_ib_query_device(struct ib_device *ibdev,
 427                                 struct ib_device_attr *props,
 428                                 struct ib_udata *uhw)
 429 {
 430         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 431         struct ib_smp *in_mad  = NULL;
 432         struct ib_smp *out_mad = NULL;
 433         int err = -ENOMEM;
 434         int have_ib_ports;
 435         struct mlx4_uverbs_ex_query_device cmd;
 436         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 437         struct mlx4_clock_params clock_params;
 438
 439         if (uhw->inlen) {
 440                 if (uhw->inlen < sizeof(cmd))
 441                         return -EINVAL;
 442
 443                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 444                 if (err)
 445                         return err;
 446
 447                 if (cmd.comp_mask)
 448                         return -EINVAL;
 449
 450                 if (cmd.reserved)
 451                         return -EINVAL;
 452         }
 453
 454         resp.response_length = offsetof(typeof(resp), response_length) +
 455                 sizeof(resp.response_length);
 456         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 457         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 458         if (!in_mad || !out_mad)
 459                 goto out;
 460
 461         init_query_mad(in_mad);
 462         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 463
 464         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 465                            1, NULL, NULL, in_mad, out_mad);
 466         if (err)
 467                 goto out;
 468
 469         memset(props, 0, sizeof *props);
 470
 471         have_ib_ports = num_ib_ports(dev->dev);
 472
 473         props->fw_ver = dev->dev->caps.fw_ver;
 474         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 475                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 476                 IB_DEVICE_SYS_IMAGE_GUID                |
 477                 IB_DEVICE_RC_RNR_NAK_GEN                |
 478                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 479         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 480                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 481         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 482                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 483         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 484                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 485         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 486                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 487         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 488                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 489         if (dev->dev->caps.max_gso_sz &&
 490             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 491             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 492                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 493         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 494                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 495         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 496             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 497             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 498                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 499         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 500                 props->device_cap_flags |= IB_DEVICE_XRC;
 501         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 502                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 503         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 504                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 505                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 506                 else
 507                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 508         }
 509         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 510                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 511
 512         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 513
 514         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 515                 0xffffff;
 516         props->vendor_part_id      = dev->dev->persist->pdev->device;
 517         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 518         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 519
 520         props->max_mr_size         = ~0ull;
 521         props->page_size_cap       = dev->dev->caps.page_size_cap;
 522         props->max_qp              = dev->dev->quotas.qp;
 523         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 524         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 525                                          dev->dev->caps.max_rq_sg);
 526         props->max_sge_rd          = MLX4_MAX_SGE_RD;
 527         props->max_cq              = dev->dev->quotas.cq;
 528         props->max_cqe             = dev->dev->caps.max_cqes;
 529         props->max_mr              = dev->dev->quotas.mpt;
 530         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 531         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 532         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 533         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 534         props->max_srq             = dev->dev->quotas.srq;
 535         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 536         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 537         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 538         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 539         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 540                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 541         props->masked_atomic_cap   = props->atomic_cap;
 542         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 543         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 544         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 545         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 546                                            props->max_mcast_grp;
 547         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 548         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 549         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 550
 551         if (!mlx4_is_slave(dev->dev))
 552                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 553
 554         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 555                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 556                 if (!err && !mlx4_is_slave(dev->dev)) {
 557                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 558                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 559                 }
 560         }
 561
 562         if (uhw->outlen) {
 563                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 564                 if (err)
 565                         goto out;
 566         }
 567 out:
 568         kfree(in_mad);
 569         kfree(out_mad);
 570
 571         return err;
 572 }
 573
 574 static enum rdma_link_layer
 575 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 576 {
 577         struct mlx4_dev *dev = to_mdev(device)->dev;
 578
 579         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 580                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 581 }
 582
 583 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 584                               struct ib_port_attr *props, int netw_view)
 585 {
 586         struct ib_smp *in_mad  = NULL;
 587         struct ib_smp *out_mad = NULL;
 588         int ext_active_speed;
 589         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 590         int err = -ENOMEM;
 591
 592         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 593         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 594         if (!in_mad || !out_mad)
 595                 goto out;
 596
 597         init_query_mad(in_mad);
 598         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 599         in_mad->attr_mod = cpu_to_be32(port);
 600
 601         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 602                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 603
 604         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 605                                 in_mad, out_mad);
 606         if (err)
 607                 goto out;
 608
 609
 610         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 611         props->lmc              = out_mad->data[34] & 0x7;
 612         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 613         props->sm_sl            = out_mad->data[36] & 0xf;
 614         props->state            = out_mad->data[32] & 0xf;
 615         props->phys_state       = out_mad->data[33] >> 4;
 616         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 617         if (netw_view)
 618                 props->gid_tbl_len = out_mad->data[50];
 619         else
 620                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 621         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 622         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 623         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 624         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 625         props->active_width     = out_mad->data[31] & 0xf;
 626         props->active_speed     = out_mad->data[35] >> 4;
 627         props->max_mtu          = out_mad->data[41] & 0xf;
 628         props->active_mtu       = out_mad->data[36] >> 4;
 629         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 630         props->max_vl_num       = out_mad->data[37] >> 4;
 631         props->init_type_reply  = out_mad->data[41] >> 4;
 632
 633         /* Check if extended speeds (EDR/FDR/...) are supported */
 634         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 635                 ext_active_speed = out_mad->data[62] >> 4;
 636
 637                 switch (ext_active_speed) {
 638                 case 1:
 639                         props->active_speed = IB_SPEED_FDR;
 640                         break;
 641                 case 2:
 642                         props->active_speed = IB_SPEED_EDR;
 643                         break;
 644                 }
 645         }
 646
 647         /* If reported active speed is QDR, check if is FDR-10 */
 648         if (props->active_speed == IB_SPEED_QDR) {
 649                 init_query_mad(in_mad);
 650                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 651                 in_mad->attr_mod = cpu_to_be32(port);
 652
 653                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 654                                    NULL, NULL, in_mad, out_mad);
 655                 if (err)
 656                         goto out;
 657
 658                 /* Checking LinkSpeedActive for FDR-10 */
 659                 if (out_mad->data[15] & 0x1)
 660                         props->active_speed = IB_SPEED_FDR10;
 661         }
 662
 663         /* Avoid wrong speed value returned by FW if the IB link is down. */
 664         if (props->state == IB_PORT_DOWN)
 665                  props->active_speed = IB_SPEED_SDR;
 666
 667 out:
 668         kfree(in_mad);
 669         kfree(out_mad);
 670         return err;
 671 }
 672
 673 static u8 state_to_phys_state(enum ib_port_state state)
 674 {
 675         return state == IB_PORT_ACTIVE ? 5 : 3;
 676 }
 677
 678 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 679                                struct ib_port_attr *props, int netw_view)
 680 {
 681
 682         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 683         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 684         struct net_device *ndev;
 685         enum ib_mtu tmp;
 686         struct mlx4_cmd_mailbox *mailbox;
 687         int err = 0;
 688         int is_bonded = mlx4_is_bonded(mdev->dev);
 689
 690         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 691         if (IS_ERR(mailbox))
 692                 return PTR_ERR(mailbox);
 693
 694         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 695                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 696                            MLX4_CMD_WRAPPED);
 697         if (err)
 698                 goto out;
 699
 700         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ?
 701                                                 IB_WIDTH_4X : IB_WIDTH_1X;
 702         props->active_speed     = IB_SPEED_QDR;
 703         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 704         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 705         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 706         props->pkey_tbl_len     = 1;
 707         props->max_mtu          = IB_MTU_4096;
 708         props->max_vl_num       = 2;
 709         props->state            = IB_PORT_DOWN;
 710         props->phys_state       = state_to_phys_state(props->state);
 711         props->active_mtu       = IB_MTU_256;
 712         spin_lock_bh(&iboe->lock);
 713         ndev = iboe->netdevs[port - 1];
 714         if (ndev && is_bonded) {
 715                 rcu_read_lock(); /* required to get upper dev */
 716                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 717                 rcu_read_unlock();
 718         }
 719         if (!ndev)
 720                 goto out_unlock;
 721
 722         tmp = iboe_get_mtu(ndev->mtu);
 723         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 724
 725         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 726                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 727         props->phys_state       = state_to_phys_state(props->state);
 728 out_unlock:
 729         spin_unlock_bh(&iboe->lock);
 730 out:
 731         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 732         return err;
 733 }
 734
 735 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 736                          struct ib_port_attr *props, int netw_view)
 737 {
 738         int err;
 739
 740         memset(props, 0, sizeof *props);
 741
 742         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 743                 ib_link_query_port(ibdev, port, props, netw_view) :
 744                                 eth_link_query_port(ibdev, port, props, netw_view);
 745
 746         return err;
 747 }
 748
 749 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 750                               struct ib_port_attr *props)
 751 {
 752         /* returns host view */
 753         return __mlx4_ib_query_port(ibdev, port, props, 0);
 754 }
 755
 756 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 757                         union ib_gid *gid, int netw_view)
 758 {
 759         struct ib_smp *in_mad  = NULL;
 760         struct ib_smp *out_mad = NULL;
 761         int err = -ENOMEM;
 762         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 763         int clear = 0;
 764         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 765
 766         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 767         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 768         if (!in_mad || !out_mad)
 769                 goto out;
 770
 771         init_query_mad(in_mad);
 772         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 773         in_mad->attr_mod = cpu_to_be32(port);
 774
 775         if (mlx4_is_mfunc(dev->dev) && netw_view)
 776                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 777
 778         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 779         if (err)
 780                 goto out;
 781
 782         memcpy(gid->raw, out_mad->data + 8, 8);
 783
 784         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 785                 if (index) {
 786                         /* For any index > 0, return the null guid */
 787                         err = 0;
 788                         clear = 1;
 789                         goto out;
 790                 }
 791         }
 792
 793         init_query_mad(in_mad);
 794         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 795         in_mad->attr_mod = cpu_to_be32(index / 8);
 796
 797         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 798                            NULL, NULL, in_mad, out_mad);
 799         if (err)
 800                 goto out;
 801
 802         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 803
 804 out:
 805         if (clear)
 806                 memset(gid->raw + 8, 0, 8);
 807         kfree(in_mad);
 808         kfree(out_mad);
 809         return err;
 810 }
 811
 812 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 813                              union ib_gid *gid)
 814 {
 815         int ret;
 816
 817         if (rdma_protocol_ib(ibdev, port))
 818                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 819
 820         if (!rdma_protocol_roce(ibdev, port))
 821                 return -ENODEV;
 822
 823         if (!rdma_cap_roce_gid_table(ibdev, port))
 824                 return -ENODEV;
 825
 826         ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
 827         if (ret == -EAGAIN) {
 828                 memcpy(gid, &zgid, sizeof(*gid));
 829                 return 0;
 830         }
 831
 832         return ret;
 833 }
 834
 835 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
 836 {
 837         union sl2vl_tbl_to_u64 sl2vl64;
 838         struct ib_smp *in_mad  = NULL;
 839         struct ib_smp *out_mad = NULL;
 840         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 841         int err = -ENOMEM;
 842         int jj;
 843
 844         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 845                 *sl2vl_tbl = 0;
 846                 return 0;
 847         }
 848
 849         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 850         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 851         if (!in_mad || !out_mad)
 852                 goto out;
 853
 854         init_query_mad(in_mad);
 855         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 856         in_mad->attr_mod = 0;
 857
 858         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 859                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 860
 861         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 862                            in_mad, out_mad);
 863         if (err)
 864                 goto out;
 865
 866         for (jj = 0; jj < 8; jj++)
 867                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 868         *sl2vl_tbl = sl2vl64.sl64;
 869
 870 out:
 871         kfree(in_mad);
 872         kfree(out_mad);
 873         return err;
 874 }
 875
 876 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 877 {
 878         u64 sl2vl;
 879         int i;
 880         int err;
 881
 882         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 883                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 884                         continue;
 885                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 886                 if (err) {
 887                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 888                                i, err);
 889                         sl2vl = 0;
 890                 }
 891                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 892         }
 893 }
 894
 895 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 896                          u16 *pkey, int netw_view)
 897 {
 898         struct ib_smp *in_mad  = NULL;
 899         struct ib_smp *out_mad = NULL;
 900         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 901         int err = -ENOMEM;
 902
 903         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 904         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 905         if (!in_mad || !out_mad)
 906                 goto out;
 907
 908         init_query_mad(in_mad);
 909         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 910         in_mad->attr_mod = cpu_to_be32(index / 32);
 911
 912         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 913                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 914
 915         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 916                            in_mad, out_mad);
 917         if (err)
 918                 goto out;
 919
 920         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 921
 922 out:
 923         kfree(in_mad);
 924         kfree(out_mad);
 925         return err;
 926 }
 927
 928 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 929 {
 930         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 931 }
 932
 933 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 934                                  struct ib_device_modify *props)
 935 {
 936         struct mlx4_cmd_mailbox *mailbox;
 937         unsigned long flags;
 938
 939         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 940                 return -EOPNOTSUPP;
 941
 942         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 943                 return 0;
 944
 945         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 946                 return -EOPNOTSUPP;
 947
 948         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 949         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 950         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 951
 952         /*
 953          * If possible, pass node desc to FW, so it can generate
 954          * a 144 trap.  If cmd fails, just ignore.
 955          */
 956         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 957         if (IS_ERR(mailbox))
 958                 return 0;
 959
 960         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 961         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 962                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 963
 964         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 965
 966         return 0;
 967 }
 968
 969 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 970                             u32 cap_mask)
 971 {
 972         struct mlx4_cmd_mailbox *mailbox;
 973         int err;
 974
 975         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 976         if (IS_ERR(mailbox))
 977                 return PTR_ERR(mailbox);
 978
 979         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 980                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 981                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 982         } else {
 983                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 984                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 985         }
 986
 987         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
 988                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 989                        MLX4_CMD_WRAPPED);
 990
 991         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 992         return err;
 993 }
 994
 995 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 996                                struct ib_port_modify *props)
 997 {
 998         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 999         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1000         struct ib_port_attr attr;
1001         u32 cap_mask;
1002         int err;
1003
1004         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1005          * of whether port link layer is ETH or IB. For ETH ports, qkey
1006          * violations and port capabilities are not meaningful.
1007          */
1008         if (is_eth)
1009                 return 0;
1010
1011         mutex_lock(&mdev->cap_mask_mutex);
1012
1013         err = mlx4_ib_query_port(ibdev, port, &attr);
1014         if (err)
1015                 goto out;
1016
1017         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1018                 ~props->clr_port_cap_mask;
1019
1020         err = mlx4_ib_SET_PORT(mdev, port,
1021                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1022                                cap_mask);
1023
1024 out:
1025         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1026         return err;
1027 }
1028
1029 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
1030                                                   struct ib_udata *udata)
1031 {
1032         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1033         struct mlx4_ib_ucontext *context;
1034         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1035         struct mlx4_ib_alloc_ucontext_resp resp;
1036         int err;
1037
1038         if (!dev->ib_active)
1039                 return ERR_PTR(-EAGAIN);
1040
1041         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1042                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1043                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1044                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1045         } else {
1046                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1047                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1048                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1049                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1050                 resp.cqe_size         = dev->dev->caps.cqe_size;
1051         }
1052
1053         context = kzalloc(sizeof(*context), GFP_KERNEL);
1054         if (!context)
1055                 return ERR_PTR(-ENOMEM);
1056
1057         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1058         if (err) {
1059                 kfree(context);
1060                 return ERR_PTR(err);
1061         }
1062
1063         INIT_LIST_HEAD(&context->db_page_list);
1064         mutex_init(&context->db_page_mutex);
1065
1066         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1067                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1068         else
1069                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1070
1071         if (err) {
1072                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1073                 kfree(context);
1074                 return ERR_PTR(-EFAULT);
1075         }
1076
1077         return &context->ibucontext;
1078 }
1079
1080 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1081 {
1082         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1083
1084         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1085         kfree(context);
1086
1087         return 0;
1088 }
1089
1090 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
1091 {
1092         /* vma_open is called when a new VMA is created on top of our VMA.
1093          * This is done through either mremap flow or split_vma (usually due
1094          * to mlock, madvise, munmap, etc.). We do not support a clone of the
1095          * vma, as this VMA is strongly hardware related. Therefore we set the
1096          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1097          * calling us again and trying to do incorrect actions. We assume that
1098          * the original vma size is exactly a single page that there will be no
1099          * "splitting" operations on.
1100          */
1101         area->vm_ops = NULL;
1102 }
1103
1104 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
1105 {
1106         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1107
1108         /* It's guaranteed that all VMAs opened on a FD are closed before the
1109          * file itself is closed, therefore no sync is needed with the regular
1110          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1111          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1112          * The close operation is usually called under mm->mmap_sem except when
1113          * process is exiting.  The exiting case is handled explicitly as part
1114          * of mlx4_ib_disassociate_ucontext.
1115          */
1116         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1117                                 area->vm_private_data;
1118
1119         /* set the vma context pointer to null in the mlx4_ib driver's private
1120          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1121          */
1122         mlx4_ib_vma_priv_data->vma = NULL;
1123 }
1124
1125 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1126         .open = mlx4_ib_vma_open,
1127         .close = mlx4_ib_vma_close
1128 };
1129
1130 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1131 {
1132         int i;
1133         int ret = 0;
1134         struct vm_area_struct *vma;
1135         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1136         struct task_struct *owning_process  = NULL;
1137         struct mm_struct   *owning_mm       = NULL;
1138
1139         owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1140         if (!owning_process)
1141                 return;
1142
1143         owning_mm = get_task_mm(owning_process);
1144         if (!owning_mm) {
1145                 pr_info("no mm, disassociate ucontext is pending task termination\n");
1146                 while (1) {
1147                         /* make sure that task is dead before returning, it may
1148                          * prevent a rare case of module down in parallel to a
1149                          * call to mlx4_ib_vma_close.
1150                          */
1151                         put_task_struct(owning_process);
1152                         msleep(1);
1153                         owning_process = get_pid_task(ibcontext->tgid,
1154                                                       PIDTYPE_PID);
1155                         if (!owning_process ||
1156                             owning_process->state == TASK_DEAD) {
1157                                 pr_info("disassociate ucontext done, task was terminated\n");
1158                                 /* in case task was dead need to release the task struct */
1159                                 if (owning_process)
1160                                         put_task_struct(owning_process);
1161                                 return;
1162                         }
1163                 }
1164         }
1165
1166         /* need to protect from a race on closing the vma as part of
1167          * mlx4_ib_vma_close().
1168          */
1169         down_read(&owning_mm->mmap_sem);
1170         for (i = 0; i < HW_BAR_COUNT; i++) {
1171                 vma = context->hw_bar_info[i].vma;
1172                 if (!vma)
1173                         continue;
1174
1175                 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1176                                    context->hw_bar_info[i].vma->vm_start,
1177                                    PAGE_SIZE);
1178                 if (ret) {
1179                         pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1180                         BUG_ON(1);
1181                 }
1182
1183                 /* context going to be destroyed, should not access ops any more */
1184                 context->hw_bar_info[i].vma->vm_ops = NULL;
1185         }
1186
1187         up_read(&owning_mm->mmap_sem);
1188         mmput(owning_mm);
1189         put_task_struct(owning_process);
1190 }
1191
1192 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1193                                  struct mlx4_ib_vma_private_data *vma_private_data)
1194 {
1195         vma_private_data->vma = vma;
1196         vma->vm_private_data = vma_private_data;
1197         vma->vm_ops =  &mlx4_ib_vm_ops;
1198 }
1199
1200 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1201 {
1202         struct mlx4_ib_dev *dev = to_mdev(context->device);
1203         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1204
1205         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1206                 return -EINVAL;
1207
1208         if (vma->vm_pgoff == 0) {
1209                 /* We prevent double mmaping on same context */
1210                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1211                         return -EINVAL;
1212
1213                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1214
1215                 if (io_remap_pfn_range(vma, vma->vm_start,
1216                                        to_mucontext(context)->uar.pfn,
1217                                        PAGE_SIZE, vma->vm_page_prot))
1218                         return -EAGAIN;
1219
1220                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1221
1222         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1223                 /* We prevent double mmaping on same context */
1224                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1225                         return -EINVAL;
1226
1227                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1228
1229                 if (io_remap_pfn_range(vma, vma->vm_start,
1230                                        to_mucontext(context)->uar.pfn +
1231                                        dev->dev->caps.num_uars,
1232                                        PAGE_SIZE, vma->vm_page_prot))
1233                         return -EAGAIN;
1234
1235                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1236
1237         } else if (vma->vm_pgoff == 3) {
1238                 struct mlx4_clock_params params;
1239                 int ret;
1240
1241                 /* We prevent double mmaping on same context */
1242                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1243                         return -EINVAL;
1244
1245                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1246
1247                 if (ret)
1248                         return ret;
1249
1250                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1251                 if (io_remap_pfn_range(vma, vma->vm_start,
1252                                        (pci_resource_start(dev->dev->persist->pdev,
1253                                                            params.bar) +
1254                                         params.offset)
1255                                        >> PAGE_SHIFT,
1256                                        PAGE_SIZE, vma->vm_page_prot))
1257                         return -EAGAIN;
1258
1259                 mlx4_ib_set_vma_data(vma,
1260                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1261         } else {
1262                 return -EINVAL;
1263         }
1264
1265         return 0;
1266 }
1267
1268 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1269                                       struct ib_ucontext *context,
1270                                       struct ib_udata *udata)
1271 {
1272         struct mlx4_ib_pd *pd;
1273         int err;
1274
1275         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1276         if (!pd)
1277                 return ERR_PTR(-ENOMEM);
1278
1279         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1280         if (err) {
1281                 kfree(pd);
1282                 return ERR_PTR(err);
1283         }
1284
1285         if (context)
1286                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1287                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1288                         kfree(pd);
1289                         return ERR_PTR(-EFAULT);
1290                 }
1291
1292         return &pd->ibpd;
1293 }
1294
1295 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1296 {
1297         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1298         kfree(pd);
1299
1300         return 0;
1301 }
1302
1303 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1304                                           struct ib_ucontext *context,
1305                                           struct ib_udata *udata)
1306 {
1307         struct mlx4_ib_xrcd *xrcd;
1308         struct ib_cq_init_attr cq_attr = {};
1309         int err;
1310
1311         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1312                 return ERR_PTR(-ENOSYS);
1313
1314         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1315         if (!xrcd)
1316                 return ERR_PTR(-ENOMEM);
1317
1318         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1319         if (err)
1320                 goto err1;
1321
1322         xrcd->pd = ib_alloc_pd(ibdev, 0);
1323         if (IS_ERR(xrcd->pd)) {
1324                 err = PTR_ERR(xrcd->pd);
1325                 goto err2;
1326         }
1327
1328         cq_attr.cqe = 1;
1329         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1330         if (IS_ERR(xrcd->cq)) {
1331                 err = PTR_ERR(xrcd->cq);
1332                 goto err3;
1333         }
1334
1335         return &xrcd->ibxrcd;
1336
1337 err3:
1338         ib_dealloc_pd(xrcd->pd);
1339 err2:
1340         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1341 err1:
1342         kfree(xrcd);
1343         return ERR_PTR(err);
1344 }
1345
1346 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1347 {
1348         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1349         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1350         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1351         kfree(xrcd);
1352
1353         return 0;
1354 }
1355
1356 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1357 {
1358         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1359         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1360         struct mlx4_ib_gid_entry *ge;
1361
1362         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1363         if (!ge)
1364                 return -ENOMEM;
1365
1366         ge->gid = *gid;
1367         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1368                 ge->port = mqp->port;
1369                 ge->added = 1;
1370         }
1371
1372         mutex_lock(&mqp->mutex);
1373         list_add_tail(&ge->list, &mqp->gid_list);
1374         mutex_unlock(&mqp->mutex);
1375
1376         return 0;
1377 }
1378
1379 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1380                                           struct mlx4_ib_counters *ctr_table)
1381 {
1382         struct counter_index *counter, *tmp_count;
1383
1384         mutex_lock(&ctr_table->mutex);
1385         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1386                                  list) {
1387                 if (counter->allocated)
1388                         mlx4_counter_free(ibdev->dev, counter->index);
1389                 list_del(&counter->list);
1390                 kfree(counter);
1391         }
1392         mutex_unlock(&ctr_table->mutex);
1393 }
1394
1395 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1396                    union ib_gid *gid)
1397 {
1398         struct net_device *ndev;
1399         int ret = 0;
1400
1401         if (!mqp->port)
1402                 return 0;
1403
1404         spin_lock_bh(&mdev->iboe.lock);
1405         ndev = mdev->iboe.netdevs[mqp->port - 1];
1406         if (ndev)
1407                 dev_hold(ndev);
1408         spin_unlock_bh(&mdev->iboe.lock);
1409
1410         if (ndev) {
1411                 ret = 1;
1412                 dev_put(ndev);
1413         }
1414
1415         return ret;
1416 }
1417
1418 struct mlx4_ib_steering {
1419         struct list_head list;
1420         struct mlx4_flow_reg_id reg_id;
1421         union ib_gid gid;
1422 };
1423
1424 #define LAST_ETH_FIELD vlan_tag
1425 #define LAST_IB_FIELD sl
1426 #define LAST_IPV4_FIELD dst_ip
1427 #define LAST_TCP_UDP_FIELD src_port
1428
1429 /* Field is the last supported field */
1430 #define FIELDS_NOT_SUPPORTED(filter, field)\
1431         memchr_inv((void *)&filter.field  +\
1432                    sizeof(filter.field), 0,\
1433                    sizeof(filter) -\
1434                    offsetof(typeof(filter), field) -\
1435                    sizeof(filter.field))
1436
1437 static int parse_flow_attr(struct mlx4_dev *dev,
1438                            u32 qp_num,
1439                            union ib_flow_spec *ib_spec,
1440                            struct _rule_hw *mlx4_spec)
1441 {
1442         enum mlx4_net_trans_rule_id type;
1443
1444         switch (ib_spec->type) {
1445         case IB_FLOW_SPEC_ETH:
1446                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1447                         return -ENOTSUPP;
1448
1449                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1450                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1451                        ETH_ALEN);
1452                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1453                        ETH_ALEN);
1454                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1455                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1456                 break;
1457         case IB_FLOW_SPEC_IB:
1458                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1459                         return -ENOTSUPP;
1460
1461                 type = MLX4_NET_TRANS_RULE_ID_IB;
1462                 mlx4_spec->ib.l3_qpn =
1463                         cpu_to_be32(qp_num);
1464                 mlx4_spec->ib.qpn_mask =
1465                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1466                 break;
1467
1468
1469         case IB_FLOW_SPEC_IPV4:
1470                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1471                         return -ENOTSUPP;
1472
1473                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1474                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1475                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1476                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1477                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1478                 break;
1479
1480         case IB_FLOW_SPEC_TCP:
1481         case IB_FLOW_SPEC_UDP:
1482                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1483                         return -ENOTSUPP;
1484
1485                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1486                                         MLX4_NET_TRANS_RULE_ID_TCP :
1487                                         MLX4_NET_TRANS_RULE_ID_UDP;
1488                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1489                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1490                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1491                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1492                 break;
1493
1494         default:
1495                 return -EINVAL;
1496         }
1497         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1498             mlx4_hw_rule_sz(dev, type) < 0)
1499                 return -EINVAL;
1500         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1501         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1502         return mlx4_hw_rule_sz(dev, type);
1503 }
1504
1505 struct default_rules {
1506         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1507         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1508         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1509         __u8  link_layer;
1510 };
1511 static const struct default_rules default_table[] = {
1512         {
1513                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1514                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1515                 .rules_create_list = {IB_FLOW_SPEC_IB},
1516                 .link_layer = IB_LINK_LAYER_INFINIBAND
1517         }
1518 };
1519
1520 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1521                                          struct ib_flow_attr *flow_attr)
1522 {
1523         int i, j, k;
1524         void *ib_flow;
1525         const struct default_rules *pdefault_rules = default_table;
1526         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1527
1528         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1529                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1530                 memset(&field_types, 0, sizeof(field_types));
1531
1532                 if (link_layer != pdefault_rules->link_layer)
1533                         continue;
1534
1535                 ib_flow = flow_attr + 1;
1536                 /* we assume the specs are sorted */
1537                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1538                      j < flow_attr->num_of_specs; k++) {
1539                         union ib_flow_spec *current_flow =
1540                                 (union ib_flow_spec *)ib_flow;
1541
1542                         /* same layer but different type */
1543                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1544                              (pdefault_rules->mandatory_fields[k] &
1545                               IB_FLOW_SPEC_LAYER_MASK)) &&
1546                             (current_flow->type !=
1547                              pdefault_rules->mandatory_fields[k]))
1548                                 goto out;
1549
1550                         /* same layer, try match next one */
1551                         if (current_flow->type ==
1552                             pdefault_rules->mandatory_fields[k]) {
1553                                 j++;
1554                                 ib_flow +=
1555                                         ((union ib_flow_spec *)ib_flow)->size;
1556                         }
1557                 }
1558
1559                 ib_flow = flow_attr + 1;
1560                 for (j = 0; j < flow_attr->num_of_specs;
1561                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1562                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1563                                 /* same layer and same type */
1564                                 if (((union ib_flow_spec *)ib_flow)->type ==
1565                                     pdefault_rules->mandatory_not_fields[k])
1566                                         goto out;
1567
1568                 return i;
1569         }
1570 out:
1571         return -1;
1572 }
1573
1574 static int __mlx4_ib_create_default_rules(
1575                 struct mlx4_ib_dev *mdev,
1576                 struct ib_qp *qp,
1577                 const struct default_rules *pdefault_rules,
1578                 struct _rule_hw *mlx4_spec) {
1579         int size = 0;
1580         int i;
1581
1582         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1583                 int ret;
1584                 union ib_flow_spec ib_spec;
1585                 switch (pdefault_rules->rules_create_list[i]) {
1586                 case 0:
1587                         /* no rule */
1588                         continue;
1589                 case IB_FLOW_SPEC_IB:
1590                         ib_spec.type = IB_FLOW_SPEC_IB;
1591                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1592
1593                         break;
1594                 default:
1595                         /* invalid rule */
1596                         return -EINVAL;
1597                 }
1598                 /* We must put empty rule, qpn is being ignored */
1599                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1600                                       mlx4_spec);
1601                 if (ret < 0) {
1602                         pr_info("invalid parsing\n");
1603                         return -EINVAL;
1604                 }
1605
1606                 mlx4_spec = (void *)mlx4_spec + ret;
1607                 size += ret;
1608         }
1609         return size;
1610 }
1611
1612 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1613                           int domain,
1614                           enum mlx4_net_trans_promisc_mode flow_type,
1615                           u64 *reg_id)
1616 {
1617         int ret, i;
1618         int size = 0;
1619         void *ib_flow;
1620         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1621         struct mlx4_cmd_mailbox *mailbox;
1622         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1623         int default_flow;
1624
1625         static const u16 __mlx4_domain[] = {
1626                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1627                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1628                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1629                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1630         };
1631
1632         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1633                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1634                 return -EINVAL;
1635         }
1636
1637         if (domain >= IB_FLOW_DOMAIN_NUM) {
1638                 pr_err("Invalid domain value %d\n", domain);
1639                 return -EINVAL;
1640         }
1641
1642         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1643                 return -EINVAL;
1644
1645         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1646         if (IS_ERR(mailbox))
1647                 return PTR_ERR(mailbox);
1648         ctrl = mailbox->buf;
1649
1650         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1651                                  flow_attr->priority);
1652         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1653         ctrl->port = flow_attr->port;
1654         ctrl->qpn = cpu_to_be32(qp->qp_num);
1655
1656         ib_flow = flow_attr + 1;
1657         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1658         /* Add default flows */
1659         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1660         if (default_flow >= 0) {
1661                 ret = __mlx4_ib_create_default_rules(
1662                                 mdev, qp, default_table + default_flow,
1663                                 mailbox->buf + size);
1664                 if (ret < 0) {
1665                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1666                         return -EINVAL;
1667                 }
1668                 size += ret;
1669         }
1670         for (i = 0; i < flow_attr->num_of_specs; i++) {
1671                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1672                                       mailbox->buf + size);
1673                 if (ret < 0) {
1674                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1675                         return -EINVAL;
1676                 }
1677                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1678                 size += ret;
1679         }
1680
1681         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1682                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1683                            MLX4_CMD_WRAPPED);
1684         if (ret == -ENOMEM)
1685                 pr_err("mcg table is full. Fail to register network rule.\n");
1686         else if (ret == -ENXIO)
1687                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1688         else if (ret)
1689                 pr_err("Invalid argument. Fail to register network rule.\n");
1690
1691         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1692         return ret;
1693 }
1694
1695 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1696 {
1697         int err;
1698         err = mlx4_cmd(dev, reg_id, 0, 0,
1699                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1700                        MLX4_CMD_WRAPPED);
1701         if (err)
1702                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1703                        reg_id);
1704         return err;
1705 }
1706
1707 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1708                                     u64 *reg_id)
1709 {
1710         void *ib_flow;
1711         union ib_flow_spec *ib_spec;
1712         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1713         int err = 0;
1714
1715         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1716             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1717                 return 0; /* do nothing */
1718
1719         ib_flow = flow_attr + 1;
1720         ib_spec = (union ib_flow_spec *)ib_flow;
1721
1722         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1723                 return 0; /* do nothing */
1724
1725         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1726                                     flow_attr->port, qp->qp_num,
1727                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1728                                     reg_id);
1729         return err;
1730 }
1731
1732 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1733                                       struct ib_flow_attr *flow_attr,
1734                                       enum mlx4_net_trans_promisc_mode *type)
1735 {
1736         int err = 0;
1737
1738         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1739             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1740             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1741                 return -EOPNOTSUPP;
1742         }
1743
1744         if (flow_attr->num_of_specs == 0) {
1745                 type[0] = MLX4_FS_MC_SNIFFER;
1746                 type[1] = MLX4_FS_UC_SNIFFER;
1747         } else {
1748                 union ib_flow_spec *ib_spec;
1749
1750                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1751                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1752                         return -EINVAL;
1753
1754                 /* if all is zero than MC and UC */
1755                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1756                         type[0] = MLX4_FS_MC_SNIFFER;
1757                         type[1] = MLX4_FS_UC_SNIFFER;
1758                 } else {
1759                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1760                                             ib_spec->eth.mask.dst_mac[1],
1761                                             ib_spec->eth.mask.dst_mac[2],
1762                                             ib_spec->eth.mask.dst_mac[3],
1763                                             ib_spec->eth.mask.dst_mac[4],
1764                                             ib_spec->eth.mask.dst_mac[5]};
1765
1766                         /* Above xor was only on MC bit, non empty mask is valid
1767                          * only if this bit is set and rest are zero.
1768                          */
1769                         if (!is_zero_ether_addr(&mac[0]))
1770                                 return -EINVAL;
1771
1772                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1773                                 type[0] = MLX4_FS_MC_SNIFFER;
1774                         else
1775                                 type[0] = MLX4_FS_UC_SNIFFER;
1776                 }
1777         }
1778
1779         return err;
1780 }
1781
1782 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1783                                     struct ib_flow_attr *flow_attr,
1784                                     int domain)
1785 {
1786         int err = 0, i = 0, j = 0;
1787         struct mlx4_ib_flow *mflow;
1788         enum mlx4_net_trans_promisc_mode type[2];
1789         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1790         int is_bonded = mlx4_is_bonded(dev);
1791
1792         if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1793                 return ERR_PTR(-EINVAL);
1794
1795         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1796             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1797                 return ERR_PTR(-EOPNOTSUPP);
1798
1799         memset(type, 0, sizeof(type));
1800
1801         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1802         if (!mflow) {
1803                 err = -ENOMEM;
1804                 goto err_free;
1805         }
1806
1807         switch (flow_attr->type) {
1808         case IB_FLOW_ATTR_NORMAL:
1809                 /* If dont trap flag (continue match) is set, under specific
1810                  * condition traffic be replicated to given qp,
1811                  * without stealing it
1812                  */
1813                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1814                         err = mlx4_ib_add_dont_trap_rule(dev,
1815                                                          flow_attr,
1816                                                          type);
1817                         if (err)
1818                                 goto err_free;
1819                 } else {
1820                         type[0] = MLX4_FS_REGULAR;
1821                 }
1822                 break;
1823
1824         case IB_FLOW_ATTR_ALL_DEFAULT:
1825                 type[0] = MLX4_FS_ALL_DEFAULT;
1826                 break;
1827
1828         case IB_FLOW_ATTR_MC_DEFAULT:
1829                 type[0] = MLX4_FS_MC_DEFAULT;
1830                 break;
1831
1832         case IB_FLOW_ATTR_SNIFFER:
1833                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1834                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1835                 break;
1836
1837         default:
1838                 err = -EINVAL;
1839                 goto err_free;
1840         }
1841
1842         while (i < ARRAY_SIZE(type) && type[i]) {
1843                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1844                                             &mflow->reg_id[i].id);
1845                 if (err)
1846                         goto err_create_flow;
1847                 if (is_bonded) {
1848                         /* Application always sees one port so the mirror rule
1849                          * must be on port #2
1850                          */
1851                         flow_attr->port = 2;
1852                         err = __mlx4_ib_create_flow(qp, flow_attr,
1853                                                     domain, type[j],
1854                                                     &mflow->reg_id[j].mirror);
1855                         flow_attr->port = 1;
1856                         if (err)
1857                                 goto err_create_flow;
1858                         j++;
1859                 }
1860
1861                 i++;
1862         }
1863
1864         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1865                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1866                                                &mflow->reg_id[i].id);
1867                 if (err)
1868                         goto err_create_flow;
1869
1870                 if (is_bonded) {
1871                         flow_attr->port = 2;
1872                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1873                                                        &mflow->reg_id[j].mirror);
1874                         flow_attr->port = 1;
1875                         if (err)
1876                                 goto err_create_flow;
1877                         j++;
1878                 }
1879                 /* function to create mirror rule */
1880                 i++;
1881         }
1882
1883         return &mflow->ibflow;
1884
1885 err_create_flow:
1886         while (i) {
1887                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1888                                              mflow->reg_id[i].id);
1889                 i--;
1890         }
1891
1892         while (j) {
1893                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1894                                              mflow->reg_id[j].mirror);
1895                 j--;
1896         }
1897 err_free:
1898         kfree(mflow);
1899         return ERR_PTR(err);
1900 }
1901
1902 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1903 {
1904         int err, ret = 0;
1905         int i = 0;
1906         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1907         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1908
1909         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1910                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1911                 if (err)
1912                         ret = err;
1913                 if (mflow->reg_id[i].mirror) {
1914                         err = __mlx4_ib_destroy_flow(mdev->dev,
1915                                                      mflow->reg_id[i].mirror);
1916                         if (err)
1917                                 ret = err;
1918                 }
1919                 i++;
1920         }
1921
1922         kfree(mflow);
1923         return ret;
1924 }
1925
1926 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1927 {
1928         int err;
1929         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1930         struct mlx4_dev *dev = mdev->dev;
1931         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1932         struct mlx4_ib_steering *ib_steering = NULL;
1933         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1934         struct mlx4_flow_reg_id reg_id;
1935
1936         if (mdev->dev->caps.steering_mode ==
1937             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1938                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1939                 if (!ib_steering)
1940                         return -ENOMEM;
1941         }
1942
1943         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1944                                     !!(mqp->flags &
1945                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1946                                     prot, &reg_id.id);
1947         if (err) {
1948                 pr_err("multicast attach op failed, err %d\n", err);
1949                 goto err_malloc;
1950         }
1951
1952         reg_id.mirror = 0;
1953         if (mlx4_is_bonded(dev)) {
1954                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1955                                             (mqp->port == 1) ? 2 : 1,
1956                                             !!(mqp->flags &
1957                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1958                                             prot, &reg_id.mirror);
1959                 if (err)
1960                         goto err_add;
1961         }
1962
1963         err = add_gid_entry(ibqp, gid);
1964         if (err)
1965                 goto err_add;
1966
1967         if (ib_steering) {
1968                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1969                 ib_steering->reg_id = reg_id;
1970                 mutex_lock(&mqp->mutex);
1971                 list_add(&ib_steering->list, &mqp->steering_rules);
1972                 mutex_unlock(&mqp->mutex);
1973         }
1974         return 0;
1975
1976 err_add:
1977         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1978                               prot, reg_id.id);
1979         if (reg_id.mirror)
1980                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1981                                       prot, reg_id.mirror);
1982 err_malloc:
1983         kfree(ib_steering);
1984
1985         return err;
1986 }
1987
1988 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1989 {
1990         struct mlx4_ib_gid_entry *ge;
1991         struct mlx4_ib_gid_entry *tmp;
1992         struct mlx4_ib_gid_entry *ret = NULL;
1993
1994         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1995                 if (!memcmp(raw, ge->gid.raw, 16)) {
1996                         ret = ge;
1997                         break;
1998                 }
1999         }
2000
2001         return ret;
2002 }
2003
2004 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2005 {
2006         int err;
2007         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
2008         struct mlx4_dev *dev = mdev->dev;
2009         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
2010         struct net_device *ndev;
2011         struct mlx4_ib_gid_entry *ge;
2012         struct mlx4_flow_reg_id reg_id = {0, 0};
2013         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
2014
2015         if (mdev->dev->caps.steering_mode ==
2016             MLX4_STEERING_MODE_DEVICE_MANAGED) {
2017                 struct mlx4_ib_steering *ib_steering;
2018
2019                 mutex_lock(&mqp->mutex);
2020                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
2021                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
2022                                 list_del(&ib_steering->list);
2023                                 break;
2024                         }
2025                 }
2026                 mutex_unlock(&mqp->mutex);
2027                 if (&ib_steering->list == &mqp->steering_rules) {
2028                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
2029                         return -EINVAL;
2030                 }
2031                 reg_id = ib_steering->reg_id;
2032                 kfree(ib_steering);
2033         }
2034
2035         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2036                                     prot, reg_id.id);
2037         if (err)
2038                 return err;
2039
2040         if (mlx4_is_bonded(dev)) {
2041                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2042                                             prot, reg_id.mirror);
2043                 if (err)
2044                         return err;
2045         }
2046
2047         mutex_lock(&mqp->mutex);
2048         ge = find_gid_entry(mqp, gid->raw);
2049         if (ge) {
2050                 spin_lock_bh(&mdev->iboe.lock);
2051                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
2052                 if (ndev)
2053                         dev_hold(ndev);
2054                 spin_unlock_bh(&mdev->iboe.lock);
2055                 if (ndev)
2056                         dev_put(ndev);
2057                 list_del(&ge->list);
2058                 kfree(ge);
2059         } else
2060                 pr_warn("could not find mgid entry\n");
2061
2062         mutex_unlock(&mqp->mutex);
2063
2064         return 0;
2065 }
2066
2067 static int init_node_data(struct mlx4_ib_dev *dev)
2068 {
2069         struct ib_smp *in_mad  = NULL;
2070         struct ib_smp *out_mad = NULL;
2071         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
2072         int err = -ENOMEM;
2073
2074         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
2075         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
2076         if (!in_mad || !out_mad)
2077                 goto out;
2078
2079         init_query_mad(in_mad);
2080         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
2081         if (mlx4_is_master(dev->dev))
2082                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2083
2084         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2085         if (err)
2086                 goto out;
2087
2088         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2089
2090         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2091
2092         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2093         if (err)
2094                 goto out;
2095
2096         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2097         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2098
2099 out:
2100         kfree(in_mad);
2101         kfree(out_mad);
2102         return err;
2103 }
2104
2105 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2106                         char *buf)
2107 {
2108         struct mlx4_ib_dev *dev =
2109                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2110         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2111 }
2112
2113 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2114                         char *buf)
2115 {
2116         struct mlx4_ib_dev *dev =
2117                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2118         return sprintf(buf, "%x\n", dev->dev->rev_id);
2119 }
2120
2121 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2122                           char *buf)
2123 {
2124         struct mlx4_ib_dev *dev =
2125                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2126         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2127                        dev->dev->board_id);
2128 }
2129
2130 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
2131 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
2132 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
2133
2134 static struct device_attribute *mlx4_class_attributes[] = {
2135         &dev_attr_hw_rev,
2136         &dev_attr_hca_type,
2137         &dev_attr_board_id
2138 };
2139
2140 struct diag_counter {
2141         const char *name;
2142         u32 offset;
2143 };
2144
2145 #define DIAG_COUNTER(_name, _offset)                    \
2146         { .name = #_name, .offset = _offset }
2147
2148 static const struct diag_counter diag_basic[] = {
2149         DIAG_COUNTER(rq_num_lle, 0x00),
2150         DIAG_COUNTER(sq_num_lle, 0x04),
2151         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2152         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2153         DIAG_COUNTER(rq_num_lpe, 0x18),
2154         DIAG_COUNTER(sq_num_lpe, 0x1C),
2155         DIAG_COUNTER(rq_num_wrfe, 0x20),
2156         DIAG_COUNTER(sq_num_wrfe, 0x24),
2157         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2158         DIAG_COUNTER(sq_num_bre, 0x34),
2159         DIAG_COUNTER(sq_num_rire, 0x44),
2160         DIAG_COUNTER(rq_num_rire, 0x48),
2161         DIAG_COUNTER(sq_num_rae, 0x4C),
2162         DIAG_COUNTER(rq_num_rae, 0x50),
2163         DIAG_COUNTER(sq_num_roe, 0x54),
2164         DIAG_COUNTER(sq_num_tree, 0x5C),
2165         DIAG_COUNTER(sq_num_rree, 0x64),
2166         DIAG_COUNTER(rq_num_rnr, 0x68),
2167         DIAG_COUNTER(sq_num_rnr, 0x6C),
2168         DIAG_COUNTER(rq_num_oos, 0x100),
2169         DIAG_COUNTER(sq_num_oos, 0x104),
2170 };
2171
2172 static const struct diag_counter diag_ext[] = {
2173         DIAG_COUNTER(rq_num_dup, 0x130),
2174         DIAG_COUNTER(sq_num_to, 0x134),
2175 };
2176
2177 static const struct diag_counter diag_device_only[] = {
2178         DIAG_COUNTER(num_cqovf, 0x1A0),
2179         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2180 };
2181
2182 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2183                                                     u8 port_num)
2184 {
2185         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2186         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2187
2188         if (!diag[!!port_num].name)
2189                 return NULL;
2190
2191         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2192                                           diag[!!port_num].num_counters,
2193                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2194 }
2195
2196 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2197                                 struct rdma_hw_stats *stats,
2198                                 u8 port, int index)
2199 {
2200         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2201         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2202         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2203                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2204         int ret;
2205         int i;
2206
2207         ret = mlx4_query_diag_counters(dev->dev,
2208                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2209                                        diag[!!port].offset, hw_value,
2210                                        diag[!!port].num_counters, port);
2211
2212         if (ret)
2213                 return ret;
2214
2215         for (i = 0; i < diag[!!port].num_counters; i++)
2216                 stats->value[i] = hw_value[i];
2217
2218         return diag[!!port].num_counters;
2219 }
2220
2221 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2222                                          const char ***name,
2223                                          u32 **offset,
2224                                          u32 *num,
2225                                          bool port)
2226 {
2227         u32 num_counters;
2228
2229         num_counters = ARRAY_SIZE(diag_basic);
2230
2231         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2232                 num_counters += ARRAY_SIZE(diag_ext);
2233
2234         if (!port)
2235                 num_counters += ARRAY_SIZE(diag_device_only);
2236
2237         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2238         if (!*name)
2239                 return -ENOMEM;
2240
2241         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2242         if (!*offset)
2243                 goto err_name;
2244
2245         *num = num_counters;
2246
2247         return 0;
2248
2249 err_name:
2250         kfree(*name);
2251         return -ENOMEM;
2252 }
2253
2254 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2255                                        const char **name,
2256                                        u32 *offset,
2257                                        bool port)
2258 {
2259         int i;
2260         int j;
2261
2262         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2263                 name[i] = diag_basic[i].name;
2264                 offset[i] = diag_basic[i].offset;
2265         }
2266
2267         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2268                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2269                         name[j] = diag_ext[i].name;
2270                         offset[j] = diag_ext[i].offset;
2271                 }
2272         }
2273
2274         if (!port) {
2275                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2276                         name[j] = diag_device_only[i].name;
2277                         offset[j] = diag_device_only[i].offset;
2278                 }
2279         }
2280 }
2281
2282 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2283 {
2284         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2285         int i;
2286         int ret;
2287         bool per_port = !!(ibdev->dev->caps.flags2 &
2288                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2289
2290         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2291                 /* i == 1 means we are building port counters */
2292                 if (i && !per_port)
2293                         continue;
2294
2295                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2296                                                     &diag[i].offset,
2297                                                     &diag[i].num_counters, i);
2298                 if (ret)
2299                         goto err_alloc;
2300
2301                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2302                                            diag[i].offset, i);
2303         }
2304
2305         ibdev->ib_dev.get_hw_stats      = mlx4_ib_get_hw_stats;
2306         ibdev->ib_dev.alloc_hw_stats    = mlx4_ib_alloc_hw_stats;
2307
2308         return 0;
2309
2310 err_alloc:
2311         if (i) {
2312                 kfree(diag[i - 1].name);
2313                 kfree(diag[i - 1].offset);
2314         }
2315
2316         return ret;
2317 }
2318
2319 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2320 {
2321         int i;
2322
2323         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2324                 kfree(ibdev->diag_counters[i].offset);
2325                 kfree(ibdev->diag_counters[i].name);
2326         }
2327 }
2328
2329 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2330 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2331                                struct net_device *dev,
2332                                int port)
2333 {
2334         u64 new_smac = 0;
2335         u64 release_mac = MLX4_IB_INVALID_MAC;
2336         struct mlx4_ib_qp *qp;
2337
2338         read_lock(&dev_base_lock);
2339         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2340         read_unlock(&dev_base_lock);
2341
2342         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2343
2344         /* no need for update QP1 and mac registration in non-SRIOV */
2345         if (!mlx4_is_mfunc(ibdev->dev))
2346                 return;
2347
2348         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2349         qp = ibdev->qp1_proxy[port - 1];
2350         if (qp) {
2351                 int new_smac_index;
2352                 u64 old_smac;
2353                 struct mlx4_update_qp_params update_params;
2354
2355                 mutex_lock(&qp->mutex);
2356                 old_smac = qp->pri.smac;
2357                 if (new_smac == old_smac)
2358                         goto unlock;
2359
2360                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2361
2362                 if (new_smac_index < 0)
2363                         goto unlock;
2364
2365                 update_params.smac_index = new_smac_index;
2366                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2367                                    &update_params)) {
2368                         release_mac = new_smac;
2369                         goto unlock;
2370                 }
2371                 /* if old port was zero, no mac was yet registered for this QP */
2372                 if (qp->pri.smac_port)
2373                         release_mac = old_smac;
2374                 qp->pri.smac = new_smac;
2375                 qp->pri.smac_port = port;
2376                 qp->pri.smac_index = new_smac_index;
2377         }
2378
2379 unlock:
2380         if (release_mac != MLX4_IB_INVALID_MAC)
2381                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2382         if (qp)
2383                 mutex_unlock(&qp->mutex);
2384         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2385 }
2386
2387 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2388                                  struct net_device *dev,
2389                                  unsigned long event)
2390
2391 {
2392         struct mlx4_ib_iboe *iboe;
2393         int update_qps_port = -1;
2394         int port;
2395
2396         ASSERT_RTNL();
2397
2398         iboe = &ibdev->iboe;
2399
2400         spin_lock_bh(&iboe->lock);
2401         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2402
2403                 iboe->netdevs[port - 1] =
2404                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2405
2406                 if (dev == iboe->netdevs[port - 1] &&
2407                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2408                      event == NETDEV_UP || event == NETDEV_CHANGE))
2409                         update_qps_port = port;
2410
2411         }
2412         spin_unlock_bh(&iboe->lock);
2413
2414         if (update_qps_port > 0)
2415                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2416 }
2417
2418 static int mlx4_ib_netdev_event(struct notifier_block *this,
2419                                 unsigned long event, void *ptr)
2420 {
2421         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2422         struct mlx4_ib_dev *ibdev;
2423
2424         if (!net_eq(dev_net(dev), &init_net))
2425                 return NOTIFY_DONE;
2426
2427         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2428         mlx4_ib_scan_netdevs(ibdev, dev, event);
2429
2430         return NOTIFY_DONE;
2431 }
2432
2433 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2434 {
2435         int port;
2436         int slave;
2437         int i;
2438
2439         if (mlx4_is_master(ibdev->dev)) {
2440                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2441                      ++slave) {
2442                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2443                                 for (i = 0;
2444                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2445                                      ++i) {
2446                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2447                                         /* master has the identity virt2phys pkey mapping */
2448                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2449                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2450                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2451                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2452                                 }
2453                         }
2454                 }
2455                 /* initialize pkey cache */
2456                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2457                         for (i = 0;
2458                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2459                              ++i)
2460                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2461                                         (i) ? 0 : 0xFFFF;
2462                 }
2463         }
2464 }
2465
2466 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2467 {
2468         int i, j, eq = 0, total_eqs = 0;
2469
2470         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2471                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2472         if (!ibdev->eq_table)
2473                 return;
2474
2475         for (i = 1; i <= dev->caps.num_ports; i++) {
2476                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2477                      j++, total_eqs++) {
2478                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2479                                 continue;
2480                         ibdev->eq_table[eq] = total_eqs;
2481                         if (!mlx4_assign_eq(dev, i,
2482                                             &ibdev->eq_table[eq]))
2483                                 eq++;
2484                         else
2485                                 ibdev->eq_table[eq] = -1;
2486                 }
2487         }
2488
2489         for (i = eq; i < dev->caps.num_comp_vectors;
2490              ibdev->eq_table[i++] = -1)
2491                 ;
2492
2493         /* Advertise the new number of EQs to clients */
2494         ibdev->ib_dev.num_comp_vectors = eq;
2495 }
2496
2497 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2498 {
2499         int i;
2500         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2501
2502         /* no eqs were allocated */
2503         if (!ibdev->eq_table)
2504                 return;
2505
2506         /* Reset the advertised EQ number */
2507         ibdev->ib_dev.num_comp_vectors = 0;
2508
2509         for (i = 0; i < total_eqs; i++)
2510                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2511
2512         kfree(ibdev->eq_table);
2513         ibdev->eq_table = NULL;
2514 }
2515
2516 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2517                                struct ib_port_immutable *immutable)
2518 {
2519         struct ib_port_attr attr;
2520         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2521         int err;
2522
2523         err = mlx4_ib_query_port(ibdev, port_num, &attr);
2524         if (err)
2525                 return err;
2526
2527         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2528         immutable->gid_tbl_len = attr.gid_tbl_len;
2529
2530         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2531                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2532         } else {
2533                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2534                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2535                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2536                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2537                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2538         }
2539
2540         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2541
2542         return 0;
2543 }
2544
2545 static void get_fw_ver_str(struct ib_device *device, char *str,
2546                            size_t str_len)
2547 {
2548         struct mlx4_ib_dev *dev =
2549                 container_of(device, struct mlx4_ib_dev, ib_dev);
2550         snprintf(str, str_len, "%d.%d.%d",
2551                  (int) (dev->dev->caps.fw_ver >> 32),
2552                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2553                  (int) dev->dev->caps.fw_ver & 0xffff);
2554 }
2555
2556 static void *mlx4_ib_add(struct mlx4_dev *dev)
2557 {
2558         struct mlx4_ib_dev *ibdev;
2559         int num_ports = 0;
2560         int i, j;
2561         int err;
2562         struct mlx4_ib_iboe *iboe;
2563         int ib_num_ports = 0;
2564         int num_req_counters;
2565         int allocated;
2566         u32 counter_index;
2567         struct counter_index *new_counter_index = NULL;
2568
2569         pr_info_once("%s", mlx4_ib_version);
2570
2571         num_ports = 0;
2572         mlx4_foreach_ib_transport_port(i, dev)
2573                 num_ports++;
2574
2575         /* No point in registering a device with no ports... */
2576         if (num_ports == 0)
2577                 return NULL;
2578
2579         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2580         if (!ibdev) {
2581                 dev_err(&dev->persist->pdev->dev,
2582                         "Device struct alloc failed\n");
2583                 return NULL;
2584         }
2585
2586         iboe = &ibdev->iboe;
2587
2588         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2589                 goto err_dealloc;
2590
2591         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2592                 goto err_pd;
2593
2594         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2595                                  PAGE_SIZE);
2596         if (!ibdev->uar_map)
2597                 goto err_uar;
2598         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2599
2600         ibdev->dev = dev;
2601         ibdev->bond_next_port   = 0;
2602
2603         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2604         ibdev->ib_dev.owner             = THIS_MODULE;
2605         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2606         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2607         ibdev->num_ports                = num_ports;
2608         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2609                                                 1 : ibdev->num_ports;
2610         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2611         ibdev->ib_dev.dma_device        = &dev->persist->pdev->dev;
2612         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2613         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2614         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2615
2616         if (dev->caps.userspace_caps)
2617                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2618         else
2619                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2620
2621         ibdev->ib_dev.uverbs_cmd_mask   =
2622                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2623                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2624                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2625                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2626                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2627                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2628                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2629                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2630                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2631                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2632                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2633                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2634                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2635                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2636                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2637                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2638                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2639                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2640                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2641                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2642                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2643                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2644                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2645                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2646
2647         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2648         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2649         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2650         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2651         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2652         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2653         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2654         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2655         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2656         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2657         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2658         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2659         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2660         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2661         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2662         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2663         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2664         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2665         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2666         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2667         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2668         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2669         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2670         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2671         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2672         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2673         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2674         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2675         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2676         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2677         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2678         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2679         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2680         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2681         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2682         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2683         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2684         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2685         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2686         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2687         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2688         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2689         ibdev->ib_dev.get_dev_fw_str    = get_fw_ver_str;
2690         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2691
2692         if (!mlx4_is_slave(ibdev->dev)) {
2693                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2694                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2695                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2696                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2697         }
2698
2699         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2700             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2701                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2702                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2703
2704                 ibdev->ib_dev.uverbs_cmd_mask |=
2705                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2706                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2707         }
2708
2709         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2710                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2711                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2712                 ibdev->ib_dev.uverbs_cmd_mask |=
2713                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2714                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2715         }
2716
2717         if (check_flow_steering_support(dev)) {
2718                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2719                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2720                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2721
2722                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2723                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2724                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2725         }
2726
2727         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2728                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2729                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2730                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2731
2732         mlx4_ib_alloc_eqs(dev, ibdev);
2733
2734         spin_lock_init(&iboe->lock);
2735
2736         if (init_node_data(ibdev))
2737                 goto err_map;
2738         mlx4_init_sl2vl_tbl(ibdev);
2739
2740         for (i = 0; i < ibdev->num_ports; ++i) {
2741                 mutex_init(&ibdev->counters_table[i].mutex);
2742                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2743         }
2744
2745         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2746         for (i = 0; i < num_req_counters; ++i) {
2747                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2748                 allocated = 0;
2749                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2750                                                 IB_LINK_LAYER_ETHERNET) {
2751                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2752                         /* if failed to allocate a new counter, use default */
2753                         if (err)
2754                                 counter_index =
2755                                         mlx4_get_default_counter_index(dev,
2756                                                                        i + 1);
2757                         else
2758                                 allocated = 1;
2759                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2760                         counter_index = mlx4_get_default_counter_index(dev,
2761                                                                        i + 1);
2762                 }
2763                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2764                                             GFP_KERNEL);
2765                 if (!new_counter_index) {
2766                         if (allocated)
2767                                 mlx4_counter_free(ibdev->dev, counter_index);
2768                         goto err_counter;
2769                 }
2770                 new_counter_index->index = counter_index;
2771                 new_counter_index->allocated = allocated;
2772                 list_add_tail(&new_counter_index->list,
2773                               &ibdev->counters_table[i].counters_list);
2774                 ibdev->counters_table[i].default_counter = counter_index;
2775                 pr_info("counter index %d for port %d allocated %d\n",
2776                         counter_index, i + 1, allocated);
2777         }
2778         if (mlx4_is_bonded(dev))
2779                 for (i = 1; i < ibdev->num_ports ; ++i) {
2780                         new_counter_index =
2781                                         kmalloc(sizeof(struct counter_index),
2782                                                 GFP_KERNEL);
2783                         if (!new_counter_index)
2784                                 goto err_counter;
2785                         new_counter_index->index = counter_index;
2786                         new_counter_index->allocated = 0;
2787                         list_add_tail(&new_counter_index->list,
2788                                       &ibdev->counters_table[i].counters_list);
2789                         ibdev->counters_table[i].default_counter =
2790                                                                 counter_index;
2791                 }
2792
2793         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2794                 ib_num_ports++;
2795
2796         spin_lock_init(&ibdev->sm_lock);
2797         mutex_init(&ibdev->cap_mask_mutex);
2798         INIT_LIST_HEAD(&ibdev->qp_list);
2799         spin_lock_init(&ibdev->reset_flow_resource_lock);
2800
2801         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2802             ib_num_ports) {
2803                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2804                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2805                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2806                                             &ibdev->steer_qpn_base, 0);
2807                 if (err)
2808                         goto err_counter;
2809
2810                 ibdev->ib_uc_qpns_bitmap =
2811                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2812                                 sizeof(long),
2813                                 GFP_KERNEL);
2814                 if (!ibdev->ib_uc_qpns_bitmap) {
2815                         dev_err(&dev->persist->pdev->dev,
2816                                 "bit map alloc failed\n");
2817                         goto err_steer_qp_release;
2818                 }
2819
2820                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2821
2822                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2823                                 dev, ibdev->steer_qpn_base,
2824                                 ibdev->steer_qpn_base +
2825                                 ibdev->steer_qpn_count - 1);
2826                 if (err)
2827                         goto err_steer_free_bitmap;
2828         }
2829
2830         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2831                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2832
2833         if (mlx4_ib_alloc_diag_counters(ibdev))
2834                 goto err_steer_free_bitmap;
2835
2836         if (ib_register_device(&ibdev->ib_dev, NULL))
2837                 goto err_diag_counters;
2838
2839         if (mlx4_ib_mad_init(ibdev))
2840                 goto err_reg;
2841
2842         if (mlx4_ib_init_sriov(ibdev))
2843                 goto err_mad;
2844
2845         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE ||
2846             dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2847                 if (!iboe->nb.notifier_call) {
2848                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2849                         err = register_netdevice_notifier(&iboe->nb);
2850                         if (err) {
2851                                 iboe->nb.notifier_call = NULL;
2852                                 goto err_notif;
2853                         }
2854                 }
2855                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2856                         err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2857                         if (err) {
2858                                 goto err_notif;
2859                         }
2860                 }
2861         }
2862
2863         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2864                 if (device_create_file(&ibdev->ib_dev.dev,
2865                                        mlx4_class_attributes[j]))
2866                         goto err_notif;
2867         }
2868
2869         ibdev->ib_active = true;
2870         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2871                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2872                                          &ibdev->ib_dev);
2873
2874         if (mlx4_is_mfunc(ibdev->dev))
2875                 init_pkeys(ibdev);
2876
2877         /* create paravirt contexts for any VFs which are active */
2878         if (mlx4_is_master(ibdev->dev)) {
2879                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2880                         if (j == mlx4_master_func_num(ibdev->dev))
2881                                 continue;
2882                         if (mlx4_is_slave_active(ibdev->dev, j))
2883                                 do_slave_init(ibdev, j, 1);
2884                 }
2885         }
2886         return ibdev;
2887
2888 err_notif:
2889         if (ibdev->iboe.nb.notifier_call) {
2890                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2891                         pr_warn("failure unregistering notifier\n");
2892                 ibdev->iboe.nb.notifier_call = NULL;
2893         }
2894         flush_workqueue(wq);
2895
2896         mlx4_ib_close_sriov(ibdev);
2897
2898 err_mad:
2899         mlx4_ib_mad_cleanup(ibdev);
2900
2901 err_reg:
2902         ib_unregister_device(&ibdev->ib_dev);
2903
2904 err_diag_counters:
2905         mlx4_ib_diag_cleanup(ibdev);
2906
2907 err_steer_free_bitmap:
2908         kfree(ibdev->ib_uc_qpns_bitmap);
2909
2910 err_steer_qp_release:
2911         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2912                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2913                                       ibdev->steer_qpn_count);
2914 err_counter:
2915         for (i = 0; i < ibdev->num_ports; ++i)
2916                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2917
2918 err_map:
2919         iounmap(ibdev->uar_map);
2920
2921 err_uar:
2922         mlx4_uar_free(dev, &ibdev->priv_uar);
2923
2924 err_pd:
2925         mlx4_pd_free(dev, ibdev->priv_pdn);
2926
2927 err_dealloc:
2928         ib_dealloc_device(&ibdev->ib_dev);
2929
2930         return NULL;
2931 }
2932
2933 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2934 {
2935         int offset;
2936
2937         WARN_ON(!dev->ib_uc_qpns_bitmap);
2938
2939         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2940                                          dev->steer_qpn_count,
2941                                          get_count_order(count));
2942         if (offset < 0)
2943                 return offset;
2944
2945         *qpn = dev->steer_qpn_base + offset;
2946         return 0;
2947 }
2948
2949 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2950 {
2951         if (!qpn ||
2952             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2953                 return;
2954
2955         BUG_ON(qpn < dev->steer_qpn_base);
2956
2957         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2958                               qpn - dev->steer_qpn_base,
2959                               get_count_order(count));
2960 }
2961
2962 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2963                          int is_attach)
2964 {
2965         int err;
2966         size_t flow_size;
2967         struct ib_flow_attr *flow = NULL;
2968         struct ib_flow_spec_ib *ib_spec;
2969
2970         if (is_attach) {
2971                 flow_size = sizeof(struct ib_flow_attr) +
2972                             sizeof(struct ib_flow_spec_ib);
2973                 flow = kzalloc(flow_size, GFP_KERNEL);
2974                 if (!flow)
2975                         return -ENOMEM;
2976                 flow->port = mqp->port;
2977                 flow->num_of_specs = 1;
2978                 flow->size = flow_size;
2979                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2980                 ib_spec->type = IB_FLOW_SPEC_IB;
2981                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2982                 /* Add an empty rule for IB L2 */
2983                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2984
2985                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2986                                             IB_FLOW_DOMAIN_NIC,
2987                                             MLX4_FS_REGULAR,
2988                                             &mqp->reg_id);
2989         } else {
2990                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2991         }
2992         kfree(flow);
2993         return err;
2994 }
2995
2996 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2997 {
2998         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2999         int p;
3000         int i;
3001
3002         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
3003                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
3004         ibdev->ib_active = false;
3005         flush_workqueue(wq);
3006
3007         mlx4_ib_close_sriov(ibdev);
3008         mlx4_ib_mad_cleanup(ibdev);
3009         ib_unregister_device(&ibdev->ib_dev);
3010         mlx4_ib_diag_cleanup(ibdev);
3011         if (ibdev->iboe.nb.notifier_call) {
3012                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
3013                         pr_warn("failure unregistering notifier\n");
3014                 ibdev->iboe.nb.notifier_call = NULL;
3015         }
3016
3017         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
3018                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3019                                       ibdev->steer_qpn_count);
3020                 kfree(ibdev->ib_uc_qpns_bitmap);
3021         }
3022
3023         iounmap(ibdev->uar_map);
3024         for (p = 0; p < ibdev->num_ports; ++p)
3025                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3026
3027         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3028                 mlx4_CLOSE_PORT(dev, p);
3029
3030         mlx4_ib_free_eqs(dev, ibdev);
3031
3032         mlx4_uar_free(dev, &ibdev->priv_uar);
3033         mlx4_pd_free(dev, ibdev->priv_pdn);
3034         ib_dealloc_device(&ibdev->ib_dev);
3035 }
3036
3037 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3038 {
3039         struct mlx4_ib_demux_work **dm = NULL;
3040         struct mlx4_dev *dev = ibdev->dev;
3041         int i;
3042         unsigned long flags;
3043         struct mlx4_active_ports actv_ports;
3044         unsigned int ports;
3045         unsigned int first_port;
3046
3047         if (!mlx4_is_master(dev))
3048                 return;
3049
3050         actv_ports = mlx4_get_active_ports(dev, slave);
3051         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3052         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3053
3054         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3055         if (!dm) {
3056                 pr_err("failed to allocate memory for tunneling qp update\n");
3057                 return;
3058         }
3059
3060         for (i = 0; i < ports; i++) {
3061                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3062                 if (!dm[i]) {
3063                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
3064                         while (--i >= 0)
3065                                 kfree(dm[i]);
3066                         goto out;
3067                 }
3068                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3069                 dm[i]->port = first_port + i + 1;
3070                 dm[i]->slave = slave;
3071                 dm[i]->do_init = do_init;
3072                 dm[i]->dev = ibdev;
3073         }
3074         /* initialize or tear down tunnel QPs for the slave */
3075         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3076         if (!ibdev->sriov.is_going_down) {
3077                 for (i = 0; i < ports; i++)
3078                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3079                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3080         } else {
3081                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3082                 for (i = 0; i < ports; i++)
3083                         kfree(dm[i]);
3084         }
3085 out:
3086         kfree(dm);
3087         return;
3088 }
3089
3090 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3091 {
3092         struct mlx4_ib_qp *mqp;
3093         unsigned long flags_qp;
3094         unsigned long flags_cq;
3095         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3096         struct list_head    cq_notify_list;
3097         struct mlx4_cq *mcq;
3098         unsigned long flags;
3099
3100         pr_warn("mlx4_ib_handle_catas_error was started\n");
3101         INIT_LIST_HEAD(&cq_notify_list);
3102
3103         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3104         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3105
3106         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3107                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3108                 if (mqp->sq.tail != mqp->sq.head) {
3109                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3110                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3111                         if (send_mcq->mcq.comp &&
3112                             mqp->ibqp.send_cq->comp_handler) {
3113                                 if (!send_mcq->mcq.reset_notify_added) {
3114                                         send_mcq->mcq.reset_notify_added = 1;
3115                                         list_add_tail(&send_mcq->mcq.reset_notify,
3116                                                       &cq_notify_list);
3117                                 }
3118                         }
3119                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3120                 }
3121                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3122                 /* Now, handle the QP's receive queue */
3123                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3124                 /* no handling is needed for SRQ */
3125                 if (!mqp->ibqp.srq) {
3126                         if (mqp->rq.tail != mqp->rq.head) {
3127                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3128                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3129                                 if (recv_mcq->mcq.comp &&
3130                                     mqp->ibqp.recv_cq->comp_handler) {
3131                                         if (!recv_mcq->mcq.reset_notify_added) {
3132                                                 recv_mcq->mcq.reset_notify_added = 1;
3133                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3134                                                               &cq_notify_list);
3135                                         }
3136                                 }
3137                                 spin_unlock_irqrestore(&recv_mcq->lock,
3138                                                        flags_cq);
3139                         }
3140                 }
3141                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3142         }
3143
3144         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3145                 mcq->comp(mcq);
3146         }
3147         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3148         pr_warn("mlx4_ib_handle_catas_error ended\n");
3149 }
3150
3151 static void handle_bonded_port_state_event(struct work_struct *work)
3152 {
3153         struct ib_event_work *ew =
3154                 container_of(work, struct ib_event_work, work);
3155         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3156         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3157         int i;
3158         struct ib_event ibev;
3159
3160         kfree(ew);
3161         spin_lock_bh(&ibdev->iboe.lock);
3162         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3163                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3164                 enum ib_port_state curr_port_state;
3165
3166                 if (!curr_netdev)
3167                         continue;
3168
3169                 curr_port_state =
3170                         (netif_running(curr_netdev) &&
3171                          netif_carrier_ok(curr_netdev)) ?
3172                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3173
3174                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3175                         curr_port_state : IB_PORT_ACTIVE;
3176         }
3177         spin_unlock_bh(&ibdev->iboe.lock);
3178
3179         ibev.device = &ibdev->ib_dev;
3180         ibev.element.port_num = 1;
3181         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3182                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3183
3184         ib_dispatch_event(&ibev);
3185 }
3186
3187 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3188 {
3189         u64 sl2vl;
3190         int err;
3191
3192         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3193         if (err) {
3194                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3195                        port, err);
3196                 sl2vl = 0;
3197         }
3198         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3199 }
3200
3201 static void ib_sl2vl_update_work(struct work_struct *work)
3202 {
3203         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3204         struct mlx4_ib_dev *mdev = ew->ib_dev;
3205         int port = ew->port;
3206
3207         mlx4_ib_sl2vl_update(mdev, port);
3208
3209         kfree(ew);
3210 }
3211
3212 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3213                                      int port)
3214 {
3215         struct ib_event_work *ew;
3216
3217         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3218         if (ew) {
3219                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3220                 ew->port = port;
3221                 ew->ib_dev = ibdev;
3222                 queue_work(wq, &ew->work);
3223         } else {
3224                 pr_err("failed to allocate memory for sl2vl update work\n");
3225         }
3226 }
3227
3228 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3229                           enum mlx4_dev_event event, unsigned long param)
3230 {
3231         struct ib_event ibev;
3232         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3233         struct mlx4_eqe *eqe = NULL;
3234         struct ib_event_work *ew;
3235         int p = 0;
3236
3237         if (mlx4_is_bonded(dev) &&
3238             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3239             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3240                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3241                 if (!ew)
3242                         return;
3243                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3244                 ew->ib_dev = ibdev;
3245                 queue_work(wq, &ew->work);
3246                 return;
3247         }
3248
3249         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3250                 eqe = (struct mlx4_eqe *)param;
3251         else
3252                 p = (int) param;
3253
3254         switch (event) {
3255         case MLX4_DEV_EVENT_PORT_UP:
3256                 if (p > ibdev->num_ports)
3257                         return;
3258                 if (!mlx4_is_slave(dev) &&
3259                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3260                         IB_LINK_LAYER_INFINIBAND) {
3261                         if (mlx4_is_master(dev))
3262                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3263                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3264                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3265                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3266                 }
3267                 ibev.event = IB_EVENT_PORT_ACTIVE;
3268                 break;
3269
3270         case MLX4_DEV_EVENT_PORT_DOWN:
3271                 if (p > ibdev->num_ports)
3272                         return;
3273                 ibev.event = IB_EVENT_PORT_ERR;
3274                 break;
3275
3276         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3277                 ibdev->ib_active = false;
3278                 ibev.event = IB_EVENT_DEVICE_FATAL;
3279                 mlx4_ib_handle_catas_error(ibdev);
3280                 break;
3281
3282         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3283                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3284                 if (!ew) {
3285                         pr_err("failed to allocate memory for events work\n");
3286                         break;
3287                 }
3288
3289                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3290                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3291                 ew->ib_dev = ibdev;
3292                 /* need to queue only for port owner, which uses GEN_EQE */
3293                 if (mlx4_is_master(dev))
3294                         queue_work(wq, &ew->work);
3295                 else
3296                         handle_port_mgmt_change_event(&ew->work);
3297                 return;
3298
3299         case MLX4_DEV_EVENT_SLAVE_INIT:
3300                 /* here, p is the slave id */
3301                 do_slave_init(ibdev, p, 1);
3302                 if (mlx4_is_master(dev)) {
3303                         int i;
3304
3305                         for (i = 1; i <= ibdev->num_ports; i++) {
3306                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3307                                         == IB_LINK_LAYER_INFINIBAND)
3308                                         mlx4_ib_slave_alias_guid_event(ibdev,
3309                                                                        p, i,
3310                                                                        1);
3311                         }
3312                 }
3313                 return;
3314
3315         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3316                 if (mlx4_is_master(dev)) {
3317                         int i;
3318
3319                         for (i = 1; i <= ibdev->num_ports; i++) {
3320                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3321                                         == IB_LINK_LAYER_INFINIBAND)
3322                                         mlx4_ib_slave_alias_guid_event(ibdev,
3323                                                                        p, i,
3324                                                                        0);
3325                         }
3326                 }
3327                 /* here, p is the slave id */
3328                 do_slave_init(ibdev, p, 0);
3329                 return;
3330
3331         default:
3332                 return;
3333         }
3334
3335         ibev.device           = ibdev_ptr;
3336         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3337
3338         ib_dispatch_event(&ibev);
3339 }
3340
3341 static struct mlx4_interface mlx4_ib_interface = {
3342         .add            = mlx4_ib_add,
3343         .remove         = mlx4_ib_remove,
3344         .event          = mlx4_ib_event,
3345         .protocol       = MLX4_PROT_IB_IPV6,
3346         .flags          = MLX4_INTFF_BONDING
3347 };
3348
3349 static int __init mlx4_ib_init(void)
3350 {
3351         int err;
3352
3353         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3354         if (!wq)
3355                 return -ENOMEM;
3356
3357         err = mlx4_ib_mcg_init();
3358         if (err)
3359                 goto clean_wq;
3360
3361         err = mlx4_register_interface(&mlx4_ib_interface);
3362         if (err)
3363                 goto clean_mcg;
3364
3365         return 0;
3366
3367 clean_mcg:
3368         mlx4_ib_mcg_destroy();
3369
3370 clean_wq:
3371         destroy_workqueue(wq);
3372         return err;
3373 }
3374
3375 static void __exit mlx4_ib_cleanup(void)
3376 {
3377         mlx4_unregister_interface(&mlx4_ib_interface);
3378         mlx4_ib_mcg_destroy();
3379         destroy_workqueue(wq);
3380 }
3381
3382 module_init(mlx4_ib_init);
3383 module_exit(mlx4_ib_cleanup);