drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <linux/sched/mm.h>
  43 #include <linux/sched/task.h>
  44
  45 #include <net/ipv6.h>
  46 #include <net/addrconf.h>
  47 #include <net/devlink.h>
  48
  49 #include <rdma/ib_smi.h>
  50 #include <rdma/ib_user_verbs.h>
  51 #include <rdma/ib_addr.h>
  52 #include <rdma/ib_cache.h>
  53
  54 #include <net/bonding.h>
  55
  56 #include <linux/mlx4/driver.h>
  57 #include <linux/mlx4/cmd.h>
  58 #include <linux/mlx4/qp.h>
  59
  60 #include "mlx4_ib.h"
  61 #include <rdma/mlx4-abi.h>
  62
  63 #define DRV_NAME        MLX4_IB_DRV_NAME
  64 #define DRV_VERSION     "4.0-0"
  65
  66 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  67 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  68 #define MLX4_IB_CARD_REV_A0   0xA0
  69
  70 MODULE_AUTHOR("Roland Dreier");
  71 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  72 MODULE_LICENSE("Dual BSD/GPL");
  73 MODULE_VERSION(DRV_VERSION);
  74
  75 int mlx4_ib_sm_guid_assign = 0;
  76 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  77 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  78
  79 static const char mlx4_ib_version[] =
  80         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  81         DRV_VERSION "\n";
  82
  83 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  84
  85 static struct workqueue_struct *wq;
  86
  87 static void init_query_mad(struct ib_smp *mad)
  88 {
  89         mad->base_version  = 1;
  90         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  91         mad->class_version = 1;
  92         mad->method        = IB_MGMT_METHOD_GET;
  93 }
  94
  95 static int check_flow_steering_support(struct mlx4_dev *dev)
  96 {
  97         int eth_num_ports = 0;
  98         int ib_num_ports = 0;
  99
 100         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
 101
 102         if (dmfs) {
 103                 int i;
 104                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 105                         eth_num_ports++;
 106                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 107                         ib_num_ports++;
 108                 dmfs &= (!ib_num_ports ||
 109                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 110                         (!eth_num_ports ||
 111                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 112                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 113                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 114                         dmfs = 0;
 115                 }
 116         }
 117         return dmfs;
 118 }
 119
 120 static int num_ib_ports(struct mlx4_dev *dev)
 121 {
 122         int ib_ports = 0;
 123         int i;
 124
 125         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 126                 ib_ports++;
 127
 128         return ib_ports;
 129 }
 130
 131 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 132 {
 133         struct mlx4_ib_dev *ibdev = to_mdev(device);
 134         struct net_device *dev;
 135
 136         rcu_read_lock();
 137         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 138
 139         if (dev) {
 140                 if (mlx4_is_bonded(ibdev->dev)) {
 141                         struct net_device *upper = NULL;
 142
 143                         upper = netdev_master_upper_dev_get_rcu(dev);
 144                         if (upper) {
 145                                 struct net_device *active;
 146
 147                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 148                                 if (active)
 149                                         dev = active;
 150                         }
 151                 }
 152         }
 153         if (dev)
 154                 dev_hold(dev);
 155
 156         rcu_read_unlock();
 157         return dev;
 158 }
 159
 160 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 161                                   struct mlx4_ib_dev *ibdev,
 162                                   u8 port_num)
 163 {
 164         struct mlx4_cmd_mailbox *mailbox;
 165         int err;
 166         struct mlx4_dev *dev = ibdev->dev;
 167         int i;
 168         union ib_gid *gid_tbl;
 169
 170         mailbox = mlx4_alloc_cmd_mailbox(dev);
 171         if (IS_ERR(mailbox))
 172                 return -ENOMEM;
 173
 174         gid_tbl = mailbox->buf;
 175
 176         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 177                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 178
 179         err = mlx4_cmd(dev, mailbox->dma,
 180                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 181                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 182                        MLX4_CMD_WRAPPED);
 183         if (mlx4_is_bonded(dev))
 184                 err += mlx4_cmd(dev, mailbox->dma,
 185                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 186                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 187                                 MLX4_CMD_WRAPPED);
 188
 189         mlx4_free_cmd_mailbox(dev, mailbox);
 190         return err;
 191 }
 192
 193 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 194                                      struct mlx4_ib_dev *ibdev,
 195                                      u8 port_num)
 196 {
 197         struct mlx4_cmd_mailbox *mailbox;
 198         int err;
 199         struct mlx4_dev *dev = ibdev->dev;
 200         int i;
 201         struct {
 202                 union ib_gid    gid;
 203                 __be32          rsrvd1[2];
 204                 __be16          rsrvd2;
 205                 u8              type;
 206                 u8              version;
 207                 __be32          rsrvd3;
 208         } *gid_tbl;
 209
 210         mailbox = mlx4_alloc_cmd_mailbox(dev);
 211         if (IS_ERR(mailbox))
 212                 return -ENOMEM;
 213
 214         gid_tbl = mailbox->buf;
 215         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 216                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 217                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 218                         gid_tbl[i].version = 2;
 219                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 220                                 gid_tbl[i].type = 1;
 221                         else
 222                                 memset(&gid_tbl[i].gid, 0, 12);
 223                 }
 224         }
 225
 226         err = mlx4_cmd(dev, mailbox->dma,
 227                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 228                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 229                        MLX4_CMD_WRAPPED);
 230         if (mlx4_is_bonded(dev))
 231                 err += mlx4_cmd(dev, mailbox->dma,
 232                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 233                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 234                                 MLX4_CMD_WRAPPED);
 235
 236         mlx4_free_cmd_mailbox(dev, mailbox);
 237         return err;
 238 }
 239
 240 static int mlx4_ib_update_gids(struct gid_entry *gids,
 241                                struct mlx4_ib_dev *ibdev,
 242                                u8 port_num)
 243 {
 244         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 245                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 246
 247         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 248 }
 249
 250 static int mlx4_ib_add_gid(struct ib_device *device,
 251                            u8 port_num,
 252                            unsigned int index,
 253                            const union ib_gid *gid,
 254                            const struct ib_gid_attr *attr,
 255                            void **context)
 256 {
 257         struct mlx4_ib_dev *ibdev = to_mdev(device);
 258         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 259         struct mlx4_port_gid_table   *port_gid_table;
 260         int free = -1, found = -1;
 261         int ret = 0;
 262         int hw_update = 0;
 263         int i;
 264         struct gid_entry *gids = NULL;
 265
 266         if (!rdma_cap_roce_gid_table(device, port_num))
 267                 return -EINVAL;
 268
 269         if (port_num > MLX4_MAX_PORTS)
 270                 return -EINVAL;
 271
 272         if (!context)
 273                 return -EINVAL;
 274
 275         port_gid_table = &iboe->gids[port_num - 1];
 276         spin_lock_bh(&iboe->lock);
 277         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 278                 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
 279                     (port_gid_table->gids[i].gid_type == attr->gid_type))  {
 280                         found = i;
 281                         break;
 282                 }
 283                 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
 284                         free = i; /* HW has space */
 285         }
 286
 287         if (found < 0) {
 288                 if (free < 0) {
 289                         ret = -ENOSPC;
 290                 } else {
 291                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 292                         if (!port_gid_table->gids[free].ctx) {
 293                                 ret = -ENOMEM;
 294                         } else {
 295                                 *context = port_gid_table->gids[free].ctx;
 296                                 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
 297                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 298                                 port_gid_table->gids[free].ctx->real_index = free;
 299                                 port_gid_table->gids[free].ctx->refcount = 1;
 300                                 hw_update = 1;
 301                         }
 302                 }
 303         } else {
 304                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 305                 *context = ctx;
 306                 ctx->refcount++;
 307         }
 308         if (!ret && hw_update) {
 309                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 310                 if (!gids) {
 311                         ret = -ENOMEM;
 312                 } else {
 313                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 314                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 315                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 316                         }
 317                 }
 318         }
 319         spin_unlock_bh(&iboe->lock);
 320
 321         if (!ret && hw_update) {
 322                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 323                 kfree(gids);
 324         }
 325
 326         return ret;
 327 }
 328
 329 static int mlx4_ib_del_gid(struct ib_device *device,
 330                            u8 port_num,
 331                            unsigned int index,
 332                            void **context)
 333 {
 334         struct gid_cache_context *ctx = *context;
 335         struct mlx4_ib_dev *ibdev = to_mdev(device);
 336         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 337         struct mlx4_port_gid_table   *port_gid_table;
 338         int ret = 0;
 339         int hw_update = 0;
 340         struct gid_entry *gids = NULL;
 341
 342         if (!rdma_cap_roce_gid_table(device, port_num))
 343                 return -EINVAL;
 344
 345         if (port_num > MLX4_MAX_PORTS)
 346                 return -EINVAL;
 347
 348         port_gid_table = &iboe->gids[port_num - 1];
 349         spin_lock_bh(&iboe->lock);
 350         if (ctx) {
 351                 ctx->refcount--;
 352                 if (!ctx->refcount) {
 353                         unsigned int real_index = ctx->real_index;
 354
 355                         memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
 356                         kfree(port_gid_table->gids[real_index].ctx);
 357                         port_gid_table->gids[real_index].ctx = NULL;
 358                         hw_update = 1;
 359                 }
 360         }
 361         if (!ret && hw_update) {
 362                 int i;
 363
 364                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 365                 if (!gids) {
 366                         ret = -ENOMEM;
 367                 } else {
 368                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
 369                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 370                 }
 371         }
 372         spin_unlock_bh(&iboe->lock);
 373
 374         if (!ret && hw_update) {
 375                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 376                 kfree(gids);
 377         }
 378         return ret;
 379 }
 380
 381 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 382                                     u8 port_num, int index)
 383 {
 384         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 385         struct gid_cache_context *ctx = NULL;
 386         union ib_gid gid;
 387         struct mlx4_port_gid_table   *port_gid_table;
 388         int real_index = -EINVAL;
 389         int i;
 390         int ret;
 391         unsigned long flags;
 392         struct ib_gid_attr attr;
 393
 394         if (port_num > MLX4_MAX_PORTS)
 395                 return -EINVAL;
 396
 397         if (mlx4_is_bonded(ibdev->dev))
 398                 port_num = 1;
 399
 400         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 401                 return index;
 402
 403         ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
 404         if (ret)
 405                 return ret;
 406
 407         if (attr.ndev)
 408                 dev_put(attr.ndev);
 409
 410         if (!memcmp(&gid, &zgid, sizeof(gid)))
 411                 return -EINVAL;
 412
 413         spin_lock_irqsave(&iboe->lock, flags);
 414         port_gid_table = &iboe->gids[port_num - 1];
 415
 416         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 417                 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
 418                     attr.gid_type == port_gid_table->gids[i].gid_type) {
 419                         ctx = port_gid_table->gids[i].ctx;
 420                         break;
 421                 }
 422         if (ctx)
 423                 real_index = ctx->real_index;
 424         spin_unlock_irqrestore(&iboe->lock, flags);
 425         return real_index;
 426 }
 427
 428 static int mlx4_ib_query_device(struct ib_device *ibdev,
 429                                 struct ib_device_attr *props,
 430                                 struct ib_udata *uhw)
 431 {
 432         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 433         struct ib_smp *in_mad  = NULL;
 434         struct ib_smp *out_mad = NULL;
 435         int err;
 436         int have_ib_ports;
 437         struct mlx4_uverbs_ex_query_device cmd;
 438         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 439         struct mlx4_clock_params clock_params;
 440
 441         if (uhw->inlen) {
 442                 if (uhw->inlen < sizeof(cmd))
 443                         return -EINVAL;
 444
 445                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 446                 if (err)
 447                         return err;
 448
 449                 if (cmd.comp_mask)
 450                         return -EINVAL;
 451
 452                 if (cmd.reserved)
 453                         return -EINVAL;
 454         }
 455
 456         resp.response_length = offsetof(typeof(resp), response_length) +
 457                 sizeof(resp.response_length);
 458         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 459         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 460         err = -ENOMEM;
 461         if (!in_mad || !out_mad)
 462                 goto out;
 463
 464         init_query_mad(in_mad);
 465         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 466
 467         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 468                            1, NULL, NULL, in_mad, out_mad);
 469         if (err)
 470                 goto out;
 471
 472         memset(props, 0, sizeof *props);
 473
 474         have_ib_ports = num_ib_ports(dev->dev);
 475
 476         props->fw_ver = dev->dev->caps.fw_ver;
 477         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 478                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 479                 IB_DEVICE_SYS_IMAGE_GUID                |
 480                 IB_DEVICE_RC_RNR_NAK_GEN                |
 481                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 482         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 483                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 484         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 485                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 486         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 487                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 488         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 489                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 490         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 491                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 492         if (dev->dev->caps.max_gso_sz &&
 493             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 494             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 495                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 496         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 497                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 498         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 499             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 500             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 501                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 502         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 503                 props->device_cap_flags |= IB_DEVICE_XRC;
 504         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 505                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 506         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 507                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 508                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 509                 else
 510                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 511         }
 512         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 513                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 514
 515         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 516
 517         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 518                 0xffffff;
 519         props->vendor_part_id      = dev->dev->persist->pdev->device;
 520         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 521         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 522
 523         props->max_mr_size         = ~0ull;
 524         props->page_size_cap       = dev->dev->caps.page_size_cap;
 525         props->max_qp              = dev->dev->quotas.qp;
 526         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 527         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 528                                          dev->dev->caps.max_rq_sg);
 529         props->max_sge_rd          = MLX4_MAX_SGE_RD;
 530         props->max_cq              = dev->dev->quotas.cq;
 531         props->max_cqe             = dev->dev->caps.max_cqes;
 532         props->max_mr              = dev->dev->quotas.mpt;
 533         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 534         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 535         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 536         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 537         props->max_srq             = dev->dev->quotas.srq;
 538         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 539         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 540         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 541         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 542         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 543                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 544         props->masked_atomic_cap   = props->atomic_cap;
 545         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 546         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 547         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 548         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 549                                            props->max_mcast_grp;
 550         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 551         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 552         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 553         props->max_ah = INT_MAX;
 554
 555         if (!mlx4_is_slave(dev->dev))
 556                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 557
 558         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 559                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 560                 if (!err && !mlx4_is_slave(dev->dev)) {
 561                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 562                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 563                 }
 564         }
 565
 566         if (uhw->outlen) {
 567                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 568                 if (err)
 569                         goto out;
 570         }
 571 out:
 572         kfree(in_mad);
 573         kfree(out_mad);
 574
 575         return err;
 576 }
 577
 578 static enum rdma_link_layer
 579 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 580 {
 581         struct mlx4_dev *dev = to_mdev(device)->dev;
 582
 583         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 584                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 585 }
 586
 587 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 588                               struct ib_port_attr *props, int netw_view)
 589 {
 590         struct ib_smp *in_mad  = NULL;
 591         struct ib_smp *out_mad = NULL;
 592         int ext_active_speed;
 593         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 594         int err = -ENOMEM;
 595
 596         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 597         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 598         if (!in_mad || !out_mad)
 599                 goto out;
 600
 601         init_query_mad(in_mad);
 602         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 603         in_mad->attr_mod = cpu_to_be32(port);
 604
 605         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 606                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 607
 608         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 609                                 in_mad, out_mad);
 610         if (err)
 611                 goto out;
 612
 613
 614         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 615         props->lmc              = out_mad->data[34] & 0x7;
 616         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 617         props->sm_sl            = out_mad->data[36] & 0xf;
 618         props->state            = out_mad->data[32] & 0xf;
 619         props->phys_state       = out_mad->data[33] >> 4;
 620         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 621         if (netw_view)
 622                 props->gid_tbl_len = out_mad->data[50];
 623         else
 624                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 625         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 626         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 627         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 628         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 629         props->active_width     = out_mad->data[31] & 0xf;
 630         props->active_speed     = out_mad->data[35] >> 4;
 631         props->max_mtu          = out_mad->data[41] & 0xf;
 632         props->active_mtu       = out_mad->data[36] >> 4;
 633         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 634         props->max_vl_num       = out_mad->data[37] >> 4;
 635         props->init_type_reply  = out_mad->data[41] >> 4;
 636
 637         /* Check if extended speeds (EDR/FDR/...) are supported */
 638         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 639                 ext_active_speed = out_mad->data[62] >> 4;
 640
 641                 switch (ext_active_speed) {
 642                 case 1:
 643                         props->active_speed = IB_SPEED_FDR;
 644                         break;
 645                 case 2:
 646                         props->active_speed = IB_SPEED_EDR;
 647                         break;
 648                 }
 649         }
 650
 651         /* If reported active speed is QDR, check if is FDR-10 */
 652         if (props->active_speed == IB_SPEED_QDR) {
 653                 init_query_mad(in_mad);
 654                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 655                 in_mad->attr_mod = cpu_to_be32(port);
 656
 657                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 658                                    NULL, NULL, in_mad, out_mad);
 659                 if (err)
 660                         goto out;
 661
 662                 /* Checking LinkSpeedActive for FDR-10 */
 663                 if (out_mad->data[15] & 0x1)
 664                         props->active_speed = IB_SPEED_FDR10;
 665         }
 666
 667         /* Avoid wrong speed value returned by FW if the IB link is down. */
 668         if (props->state == IB_PORT_DOWN)
 669                  props->active_speed = IB_SPEED_SDR;
 670
 671 out:
 672         kfree(in_mad);
 673         kfree(out_mad);
 674         return err;
 675 }
 676
 677 static u8 state_to_phys_state(enum ib_port_state state)
 678 {
 679         return state == IB_PORT_ACTIVE ? 5 : 3;
 680 }
 681
 682 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 683                                struct ib_port_attr *props)
 684 {
 685
 686         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 687         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 688         struct net_device *ndev;
 689         enum ib_mtu tmp;
 690         struct mlx4_cmd_mailbox *mailbox;
 691         int err = 0;
 692         int is_bonded = mlx4_is_bonded(mdev->dev);
 693
 694         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 695         if (IS_ERR(mailbox))
 696                 return PTR_ERR(mailbox);
 697
 698         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 699                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 700                            MLX4_CMD_WRAPPED);
 701         if (err)
 702                 goto out;
 703
 704         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ||
 705                                    (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 706                                            IB_WIDTH_4X : IB_WIDTH_1X;
 707         props->active_speed     =  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 708                                            IB_SPEED_FDR : IB_SPEED_QDR;
 709         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 710         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 711         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 712         props->pkey_tbl_len     = 1;
 713         props->max_mtu          = IB_MTU_4096;
 714         props->max_vl_num       = 2;
 715         props->state            = IB_PORT_DOWN;
 716         props->phys_state       = state_to_phys_state(props->state);
 717         props->active_mtu       = IB_MTU_256;
 718         spin_lock_bh(&iboe->lock);
 719         ndev = iboe->netdevs[port - 1];
 720         if (ndev && is_bonded) {
 721                 rcu_read_lock(); /* required to get upper dev */
 722                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 723                 rcu_read_unlock();
 724         }
 725         if (!ndev)
 726                 goto out_unlock;
 727
 728         tmp = iboe_get_mtu(ndev->mtu);
 729         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 730
 731         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 732                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 733         props->phys_state       = state_to_phys_state(props->state);
 734 out_unlock:
 735         spin_unlock_bh(&iboe->lock);
 736 out:
 737         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 738         return err;
 739 }
 740
 741 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 742                          struct ib_port_attr *props, int netw_view)
 743 {
 744         int err;
 745
 746         /* props being zeroed by the caller, avoid zeroing it here */
 747
 748         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 749                 ib_link_query_port(ibdev, port, props, netw_view) :
 750                                 eth_link_query_port(ibdev, port, props);
 751
 752         return err;
 753 }
 754
 755 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 756                               struct ib_port_attr *props)
 757 {
 758         /* returns host view */
 759         return __mlx4_ib_query_port(ibdev, port, props, 0);
 760 }
 761
 762 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 763                         union ib_gid *gid, int netw_view)
 764 {
 765         struct ib_smp *in_mad  = NULL;
 766         struct ib_smp *out_mad = NULL;
 767         int err = -ENOMEM;
 768         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 769         int clear = 0;
 770         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 771
 772         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 773         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 774         if (!in_mad || !out_mad)
 775                 goto out;
 776
 777         init_query_mad(in_mad);
 778         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 779         in_mad->attr_mod = cpu_to_be32(port);
 780
 781         if (mlx4_is_mfunc(dev->dev) && netw_view)
 782                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 783
 784         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 785         if (err)
 786                 goto out;
 787
 788         memcpy(gid->raw, out_mad->data + 8, 8);
 789
 790         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 791                 if (index) {
 792                         /* For any index > 0, return the null guid */
 793                         err = 0;
 794                         clear = 1;
 795                         goto out;
 796                 }
 797         }
 798
 799         init_query_mad(in_mad);
 800         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 801         in_mad->attr_mod = cpu_to_be32(index / 8);
 802
 803         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 804                            NULL, NULL, in_mad, out_mad);
 805         if (err)
 806                 goto out;
 807
 808         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 809
 810 out:
 811         if (clear)
 812                 memset(gid->raw + 8, 0, 8);
 813         kfree(in_mad);
 814         kfree(out_mad);
 815         return err;
 816 }
 817
 818 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 819                              union ib_gid *gid)
 820 {
 821         int ret;
 822
 823         if (rdma_protocol_ib(ibdev, port))
 824                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 825
 826         if (!rdma_protocol_roce(ibdev, port))
 827                 return -ENODEV;
 828
 829         if (!rdma_cap_roce_gid_table(ibdev, port))
 830                 return -ENODEV;
 831
 832         ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
 833         if (ret == -EAGAIN) {
 834                 memcpy(gid, &zgid, sizeof(*gid));
 835                 return 0;
 836         }
 837
 838         return ret;
 839 }
 840
 841 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
 842 {
 843         union sl2vl_tbl_to_u64 sl2vl64;
 844         struct ib_smp *in_mad  = NULL;
 845         struct ib_smp *out_mad = NULL;
 846         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 847         int err = -ENOMEM;
 848         int jj;
 849
 850         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 851                 *sl2vl_tbl = 0;
 852                 return 0;
 853         }
 854
 855         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 856         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 857         if (!in_mad || !out_mad)
 858                 goto out;
 859
 860         init_query_mad(in_mad);
 861         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 862         in_mad->attr_mod = 0;
 863
 864         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 865                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 866
 867         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 868                            in_mad, out_mad);
 869         if (err)
 870                 goto out;
 871
 872         for (jj = 0; jj < 8; jj++)
 873                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 874         *sl2vl_tbl = sl2vl64.sl64;
 875
 876 out:
 877         kfree(in_mad);
 878         kfree(out_mad);
 879         return err;
 880 }
 881
 882 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 883 {
 884         u64 sl2vl;
 885         int i;
 886         int err;
 887
 888         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 889                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 890                         continue;
 891                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 892                 if (err) {
 893                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 894                                i, err);
 895                         sl2vl = 0;
 896                 }
 897                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 898         }
 899 }
 900
 901 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 902                          u16 *pkey, int netw_view)
 903 {
 904         struct ib_smp *in_mad  = NULL;
 905         struct ib_smp *out_mad = NULL;
 906         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 907         int err = -ENOMEM;
 908
 909         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 910         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 911         if (!in_mad || !out_mad)
 912                 goto out;
 913
 914         init_query_mad(in_mad);
 915         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 916         in_mad->attr_mod = cpu_to_be32(index / 32);
 917
 918         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 919                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 920
 921         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 922                            in_mad, out_mad);
 923         if (err)
 924                 goto out;
 925
 926         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 927
 928 out:
 929         kfree(in_mad);
 930         kfree(out_mad);
 931         return err;
 932 }
 933
 934 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 935 {
 936         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 937 }
 938
 939 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 940                                  struct ib_device_modify *props)
 941 {
 942         struct mlx4_cmd_mailbox *mailbox;
 943         unsigned long flags;
 944
 945         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 946                 return -EOPNOTSUPP;
 947
 948         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 949                 return 0;
 950
 951         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 952                 return -EOPNOTSUPP;
 953
 954         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 955         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 956         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 957
 958         /*
 959          * If possible, pass node desc to FW, so it can generate
 960          * a 144 trap.  If cmd fails, just ignore.
 961          */
 962         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 963         if (IS_ERR(mailbox))
 964                 return 0;
 965
 966         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 967         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 968                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 969
 970         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 971
 972         return 0;
 973 }
 974
 975 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 976                             u32 cap_mask)
 977 {
 978         struct mlx4_cmd_mailbox *mailbox;
 979         int err;
 980
 981         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 982         if (IS_ERR(mailbox))
 983                 return PTR_ERR(mailbox);
 984
 985         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 986                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 987                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 988         } else {
 989                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 990                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 991         }
 992
 993         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
 994                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 995                        MLX4_CMD_WRAPPED);
 996
 997         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 998         return err;
 999 }
1000
1001 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1002                                struct ib_port_modify *props)
1003 {
1004         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1005         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1006         struct ib_port_attr attr;
1007         u32 cap_mask;
1008         int err;
1009
1010         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1011          * of whether port link layer is ETH or IB. For ETH ports, qkey
1012          * violations and port capabilities are not meaningful.
1013          */
1014         if (is_eth)
1015                 return 0;
1016
1017         mutex_lock(&mdev->cap_mask_mutex);
1018
1019         err = ib_query_port(ibdev, port, &attr);
1020         if (err)
1021                 goto out;
1022
1023         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1024                 ~props->clr_port_cap_mask;
1025
1026         err = mlx4_ib_SET_PORT(mdev, port,
1027                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1028                                cap_mask);
1029
1030 out:
1031         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1032         return err;
1033 }
1034
1035 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
1036                                                   struct ib_udata *udata)
1037 {
1038         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1039         struct mlx4_ib_ucontext *context;
1040         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1041         struct mlx4_ib_alloc_ucontext_resp resp;
1042         int err;
1043
1044         if (!dev->ib_active)
1045                 return ERR_PTR(-EAGAIN);
1046
1047         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1048                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1049                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1050                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1051         } else {
1052                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1053                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1054                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1055                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1056                 resp.cqe_size         = dev->dev->caps.cqe_size;
1057         }
1058
1059         context = kzalloc(sizeof(*context), GFP_KERNEL);
1060         if (!context)
1061                 return ERR_PTR(-ENOMEM);
1062
1063         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1064         if (err) {
1065                 kfree(context);
1066                 return ERR_PTR(err);
1067         }
1068
1069         INIT_LIST_HEAD(&context->db_page_list);
1070         mutex_init(&context->db_page_mutex);
1071
1072         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1073                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1074         else
1075                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1076
1077         if (err) {
1078                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1079                 kfree(context);
1080                 return ERR_PTR(-EFAULT);
1081         }
1082
1083         return &context->ibucontext;
1084 }
1085
1086 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1087 {
1088         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1089
1090         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1091         kfree(context);
1092
1093         return 0;
1094 }
1095
1096 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
1097 {
1098         /* vma_open is called when a new VMA is created on top of our VMA.
1099          * This is done through either mremap flow or split_vma (usually due
1100          * to mlock, madvise, munmap, etc.). We do not support a clone of the
1101          * vma, as this VMA is strongly hardware related. Therefore we set the
1102          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1103          * calling us again and trying to do incorrect actions. We assume that
1104          * the original vma size is exactly a single page that there will be no
1105          * "splitting" operations on.
1106          */
1107         area->vm_ops = NULL;
1108 }
1109
1110 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
1111 {
1112         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1113
1114         /* It's guaranteed that all VMAs opened on a FD are closed before the
1115          * file itself is closed, therefore no sync is needed with the regular
1116          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1117          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1118          * The close operation is usually called under mm->mmap_sem except when
1119          * process is exiting.  The exiting case is handled explicitly as part
1120          * of mlx4_ib_disassociate_ucontext.
1121          */
1122         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1123                                 area->vm_private_data;
1124
1125         /* set the vma context pointer to null in the mlx4_ib driver's private
1126          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1127          */
1128         mlx4_ib_vma_priv_data->vma = NULL;
1129 }
1130
1131 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1132         .open = mlx4_ib_vma_open,
1133         .close = mlx4_ib_vma_close
1134 };
1135
1136 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1137 {
1138         int i;
1139         int ret = 0;
1140         struct vm_area_struct *vma;
1141         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1142         struct task_struct *owning_process  = NULL;
1143         struct mm_struct   *owning_mm       = NULL;
1144
1145         owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1146         if (!owning_process)
1147                 return;
1148
1149         owning_mm = get_task_mm(owning_process);
1150         if (!owning_mm) {
1151                 pr_info("no mm, disassociate ucontext is pending task termination\n");
1152                 while (1) {
1153                         /* make sure that task is dead before returning, it may
1154                          * prevent a rare case of module down in parallel to a
1155                          * call to mlx4_ib_vma_close.
1156                          */
1157                         put_task_struct(owning_process);
1158                         usleep_range(1000, 2000);
1159                         owning_process = get_pid_task(ibcontext->tgid,
1160                                                       PIDTYPE_PID);
1161                         if (!owning_process ||
1162                             owning_process->state == TASK_DEAD) {
1163                                 pr_info("disassociate ucontext done, task was terminated\n");
1164                                 /* in case task was dead need to release the task struct */
1165                                 if (owning_process)
1166                                         put_task_struct(owning_process);
1167                                 return;
1168                         }
1169                 }
1170         }
1171
1172         /* need to protect from a race on closing the vma as part of
1173          * mlx4_ib_vma_close().
1174          */
1175         down_write(&owning_mm->mmap_sem);
1176         for (i = 0; i < HW_BAR_COUNT; i++) {
1177                 vma = context->hw_bar_info[i].vma;
1178                 if (!vma)
1179                         continue;
1180
1181                 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1182                                    context->hw_bar_info[i].vma->vm_start,
1183                                    PAGE_SIZE);
1184                 if (ret) {
1185                         pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1186                         BUG_ON(1);
1187                 }
1188
1189                 context->hw_bar_info[i].vma->vm_flags &=
1190                         ~(VM_SHARED | VM_MAYSHARE);
1191                 /* context going to be destroyed, should not access ops any more */
1192                 context->hw_bar_info[i].vma->vm_ops = NULL;
1193         }
1194
1195         up_write(&owning_mm->mmap_sem);
1196         mmput(owning_mm);
1197         put_task_struct(owning_process);
1198 }
1199
1200 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1201                                  struct mlx4_ib_vma_private_data *vma_private_data)
1202 {
1203         vma_private_data->vma = vma;
1204         vma->vm_private_data = vma_private_data;
1205         vma->vm_ops =  &mlx4_ib_vm_ops;
1206 }
1207
1208 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1209 {
1210         struct mlx4_ib_dev *dev = to_mdev(context->device);
1211         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1212
1213         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1214                 return -EINVAL;
1215
1216         if (vma->vm_pgoff == 0) {
1217                 /* We prevent double mmaping on same context */
1218                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1219                         return -EINVAL;
1220
1221                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1222
1223                 if (io_remap_pfn_range(vma, vma->vm_start,
1224                                        to_mucontext(context)->uar.pfn,
1225                                        PAGE_SIZE, vma->vm_page_prot))
1226                         return -EAGAIN;
1227
1228                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1229
1230         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1231                 /* We prevent double mmaping on same context */
1232                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1233                         return -EINVAL;
1234
1235                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1236
1237                 if (io_remap_pfn_range(vma, vma->vm_start,
1238                                        to_mucontext(context)->uar.pfn +
1239                                        dev->dev->caps.num_uars,
1240                                        PAGE_SIZE, vma->vm_page_prot))
1241                         return -EAGAIN;
1242
1243                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1244
1245         } else if (vma->vm_pgoff == 3) {
1246                 struct mlx4_clock_params params;
1247                 int ret;
1248
1249                 /* We prevent double mmaping on same context */
1250                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1251                         return -EINVAL;
1252
1253                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1254
1255                 if (ret)
1256                         return ret;
1257
1258                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1259                 if (io_remap_pfn_range(vma, vma->vm_start,
1260                                        (pci_resource_start(dev->dev->persist->pdev,
1261                                                            params.bar) +
1262                                         params.offset)
1263                                        >> PAGE_SHIFT,
1264                                        PAGE_SIZE, vma->vm_page_prot))
1265                         return -EAGAIN;
1266
1267                 mlx4_ib_set_vma_data(vma,
1268                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1269         } else {
1270                 return -EINVAL;
1271         }
1272
1273         return 0;
1274 }
1275
1276 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1277                                       struct ib_ucontext *context,
1278                                       struct ib_udata *udata)
1279 {
1280         struct mlx4_ib_pd *pd;
1281         int err;
1282
1283         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1284         if (!pd)
1285                 return ERR_PTR(-ENOMEM);
1286
1287         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1288         if (err) {
1289                 kfree(pd);
1290                 return ERR_PTR(err);
1291         }
1292
1293         if (context)
1294                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1295                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1296                         kfree(pd);
1297                         return ERR_PTR(-EFAULT);
1298                 }
1299
1300         return &pd->ibpd;
1301 }
1302
1303 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1304 {
1305         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1306         kfree(pd);
1307
1308         return 0;
1309 }
1310
1311 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1312                                           struct ib_ucontext *context,
1313                                           struct ib_udata *udata)
1314 {
1315         struct mlx4_ib_xrcd *xrcd;
1316         struct ib_cq_init_attr cq_attr = {};
1317         int err;
1318
1319         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1320                 return ERR_PTR(-ENOSYS);
1321
1322         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1323         if (!xrcd)
1324                 return ERR_PTR(-ENOMEM);
1325
1326         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1327         if (err)
1328                 goto err1;
1329
1330         xrcd->pd = ib_alloc_pd(ibdev, 0);
1331         if (IS_ERR(xrcd->pd)) {
1332                 err = PTR_ERR(xrcd->pd);
1333                 goto err2;
1334         }
1335
1336         cq_attr.cqe = 1;
1337         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1338         if (IS_ERR(xrcd->cq)) {
1339                 err = PTR_ERR(xrcd->cq);
1340                 goto err3;
1341         }
1342
1343         return &xrcd->ibxrcd;
1344
1345 err3:
1346         ib_dealloc_pd(xrcd->pd);
1347 err2:
1348         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1349 err1:
1350         kfree(xrcd);
1351         return ERR_PTR(err);
1352 }
1353
1354 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1355 {
1356         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1357         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1358         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1359         kfree(xrcd);
1360
1361         return 0;
1362 }
1363
1364 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1365 {
1366         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1367         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1368         struct mlx4_ib_gid_entry *ge;
1369
1370         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1371         if (!ge)
1372                 return -ENOMEM;
1373
1374         ge->gid = *gid;
1375         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1376                 ge->port = mqp->port;
1377                 ge->added = 1;
1378         }
1379
1380         mutex_lock(&mqp->mutex);
1381         list_add_tail(&ge->list, &mqp->gid_list);
1382         mutex_unlock(&mqp->mutex);
1383
1384         return 0;
1385 }
1386
1387 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1388                                           struct mlx4_ib_counters *ctr_table)
1389 {
1390         struct counter_index *counter, *tmp_count;
1391
1392         mutex_lock(&ctr_table->mutex);
1393         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1394                                  list) {
1395                 if (counter->allocated)
1396                         mlx4_counter_free(ibdev->dev, counter->index);
1397                 list_del(&counter->list);
1398                 kfree(counter);
1399         }
1400         mutex_unlock(&ctr_table->mutex);
1401 }
1402
1403 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1404                    union ib_gid *gid)
1405 {
1406         struct net_device *ndev;
1407         int ret = 0;
1408
1409         if (!mqp->port)
1410                 return 0;
1411
1412         spin_lock_bh(&mdev->iboe.lock);
1413         ndev = mdev->iboe.netdevs[mqp->port - 1];
1414         if (ndev)
1415                 dev_hold(ndev);
1416         spin_unlock_bh(&mdev->iboe.lock);
1417
1418         if (ndev) {
1419                 ret = 1;
1420                 dev_put(ndev);
1421         }
1422
1423         return ret;
1424 }
1425
1426 struct mlx4_ib_steering {
1427         struct list_head list;
1428         struct mlx4_flow_reg_id reg_id;
1429         union ib_gid gid;
1430 };
1431
1432 #define LAST_ETH_FIELD vlan_tag
1433 #define LAST_IB_FIELD sl
1434 #define LAST_IPV4_FIELD dst_ip
1435 #define LAST_TCP_UDP_FIELD src_port
1436
1437 /* Field is the last supported field */
1438 #define FIELDS_NOT_SUPPORTED(filter, field)\
1439         memchr_inv((void *)&filter.field  +\
1440                    sizeof(filter.field), 0,\
1441                    sizeof(filter) -\
1442                    offsetof(typeof(filter), field) -\
1443                    sizeof(filter.field))
1444
1445 static int parse_flow_attr(struct mlx4_dev *dev,
1446                            u32 qp_num,
1447                            union ib_flow_spec *ib_spec,
1448                            struct _rule_hw *mlx4_spec)
1449 {
1450         enum mlx4_net_trans_rule_id type;
1451
1452         switch (ib_spec->type) {
1453         case IB_FLOW_SPEC_ETH:
1454                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1455                         return -ENOTSUPP;
1456
1457                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1458                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1459                        ETH_ALEN);
1460                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1461                        ETH_ALEN);
1462                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1463                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1464                 break;
1465         case IB_FLOW_SPEC_IB:
1466                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1467                         return -ENOTSUPP;
1468
1469                 type = MLX4_NET_TRANS_RULE_ID_IB;
1470                 mlx4_spec->ib.l3_qpn =
1471                         cpu_to_be32(qp_num);
1472                 mlx4_spec->ib.qpn_mask =
1473                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1474                 break;
1475
1476
1477         case IB_FLOW_SPEC_IPV4:
1478                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1479                         return -ENOTSUPP;
1480
1481                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1482                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1483                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1484                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1485                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1486                 break;
1487
1488         case IB_FLOW_SPEC_TCP:
1489         case IB_FLOW_SPEC_UDP:
1490                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1491                         return -ENOTSUPP;
1492
1493                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1494                                         MLX4_NET_TRANS_RULE_ID_TCP :
1495                                         MLX4_NET_TRANS_RULE_ID_UDP;
1496                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1497                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1498                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1499                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1500                 break;
1501
1502         default:
1503                 return -EINVAL;
1504         }
1505         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1506             mlx4_hw_rule_sz(dev, type) < 0)
1507                 return -EINVAL;
1508         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1509         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1510         return mlx4_hw_rule_sz(dev, type);
1511 }
1512
1513 struct default_rules {
1514         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1515         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1516         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1517         __u8  link_layer;
1518 };
1519 static const struct default_rules default_table[] = {
1520         {
1521                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1522                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1523                 .rules_create_list = {IB_FLOW_SPEC_IB},
1524                 .link_layer = IB_LINK_LAYER_INFINIBAND
1525         }
1526 };
1527
1528 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1529                                          struct ib_flow_attr *flow_attr)
1530 {
1531         int i, j, k;
1532         void *ib_flow;
1533         const struct default_rules *pdefault_rules = default_table;
1534         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1535
1536         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1537                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1538                 memset(&field_types, 0, sizeof(field_types));
1539
1540                 if (link_layer != pdefault_rules->link_layer)
1541                         continue;
1542
1543                 ib_flow = flow_attr + 1;
1544                 /* we assume the specs are sorted */
1545                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1546                      j < flow_attr->num_of_specs; k++) {
1547                         union ib_flow_spec *current_flow =
1548                                 (union ib_flow_spec *)ib_flow;
1549
1550                         /* same layer but different type */
1551                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1552                              (pdefault_rules->mandatory_fields[k] &
1553                               IB_FLOW_SPEC_LAYER_MASK)) &&
1554                             (current_flow->type !=
1555                              pdefault_rules->mandatory_fields[k]))
1556                                 goto out;
1557
1558                         /* same layer, try match next one */
1559                         if (current_flow->type ==
1560                             pdefault_rules->mandatory_fields[k]) {
1561                                 j++;
1562                                 ib_flow +=
1563                                         ((union ib_flow_spec *)ib_flow)->size;
1564                         }
1565                 }
1566
1567                 ib_flow = flow_attr + 1;
1568                 for (j = 0; j < flow_attr->num_of_specs;
1569                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1570                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1571                                 /* same layer and same type */
1572                                 if (((union ib_flow_spec *)ib_flow)->type ==
1573                                     pdefault_rules->mandatory_not_fields[k])
1574                                         goto out;
1575
1576                 return i;
1577         }
1578 out:
1579         return -1;
1580 }
1581
1582 static int __mlx4_ib_create_default_rules(
1583                 struct mlx4_ib_dev *mdev,
1584                 struct ib_qp *qp,
1585                 const struct default_rules *pdefault_rules,
1586                 struct _rule_hw *mlx4_spec) {
1587         int size = 0;
1588         int i;
1589
1590         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1591                 int ret;
1592                 union ib_flow_spec ib_spec;
1593                 switch (pdefault_rules->rules_create_list[i]) {
1594                 case 0:
1595                         /* no rule */
1596                         continue;
1597                 case IB_FLOW_SPEC_IB:
1598                         ib_spec.type = IB_FLOW_SPEC_IB;
1599                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1600
1601                         break;
1602                 default:
1603                         /* invalid rule */
1604                         return -EINVAL;
1605                 }
1606                 /* We must put empty rule, qpn is being ignored */
1607                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1608                                       mlx4_spec);
1609                 if (ret < 0) {
1610                         pr_info("invalid parsing\n");
1611                         return -EINVAL;
1612                 }
1613
1614                 mlx4_spec = (void *)mlx4_spec + ret;
1615                 size += ret;
1616         }
1617         return size;
1618 }
1619
1620 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1621                           int domain,
1622                           enum mlx4_net_trans_promisc_mode flow_type,
1623                           u64 *reg_id)
1624 {
1625         int ret, i;
1626         int size = 0;
1627         void *ib_flow;
1628         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1629         struct mlx4_cmd_mailbox *mailbox;
1630         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1631         int default_flow;
1632
1633         static const u16 __mlx4_domain[] = {
1634                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1635                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1636                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1637                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1638         };
1639
1640         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1641                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1642                 return -EINVAL;
1643         }
1644
1645         if (domain >= IB_FLOW_DOMAIN_NUM) {
1646                 pr_err("Invalid domain value %d\n", domain);
1647                 return -EINVAL;
1648         }
1649
1650         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1651                 return -EINVAL;
1652
1653         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1654         if (IS_ERR(mailbox))
1655                 return PTR_ERR(mailbox);
1656         ctrl = mailbox->buf;
1657
1658         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1659                                  flow_attr->priority);
1660         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1661         ctrl->port = flow_attr->port;
1662         ctrl->qpn = cpu_to_be32(qp->qp_num);
1663
1664         ib_flow = flow_attr + 1;
1665         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1666         /* Add default flows */
1667         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1668         if (default_flow >= 0) {
1669                 ret = __mlx4_ib_create_default_rules(
1670                                 mdev, qp, default_table + default_flow,
1671                                 mailbox->buf + size);
1672                 if (ret < 0) {
1673                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1674                         return -EINVAL;
1675                 }
1676                 size += ret;
1677         }
1678         for (i = 0; i < flow_attr->num_of_specs; i++) {
1679                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1680                                       mailbox->buf + size);
1681                 if (ret < 0) {
1682                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1683                         return -EINVAL;
1684                 }
1685                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1686                 size += ret;
1687         }
1688
1689         if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1690             flow_attr->num_of_specs == 1) {
1691                 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1692                 enum ib_flow_spec_type header_spec =
1693                         ((union ib_flow_spec *)(flow_attr + 1))->type;
1694
1695                 if (header_spec == IB_FLOW_SPEC_ETH)
1696                         mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1697         }
1698
1699         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1700                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1701                            MLX4_CMD_NATIVE);
1702         if (ret == -ENOMEM)
1703                 pr_err("mcg table is full. Fail to register network rule.\n");
1704         else if (ret == -ENXIO)
1705                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1706         else if (ret)
1707                 pr_err("Invalid argument. Fail to register network rule.\n");
1708
1709         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1710         return ret;
1711 }
1712
1713 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1714 {
1715         int err;
1716         err = mlx4_cmd(dev, reg_id, 0, 0,
1717                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1718                        MLX4_CMD_NATIVE);
1719         if (err)
1720                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1721                        reg_id);
1722         return err;
1723 }
1724
1725 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1726                                     u64 *reg_id)
1727 {
1728         void *ib_flow;
1729         union ib_flow_spec *ib_spec;
1730         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1731         int err = 0;
1732
1733         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1734             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1735                 return 0; /* do nothing */
1736
1737         ib_flow = flow_attr + 1;
1738         ib_spec = (union ib_flow_spec *)ib_flow;
1739
1740         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1741                 return 0; /* do nothing */
1742
1743         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1744                                     flow_attr->port, qp->qp_num,
1745                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1746                                     reg_id);
1747         return err;
1748 }
1749
1750 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1751                                       struct ib_flow_attr *flow_attr,
1752                                       enum mlx4_net_trans_promisc_mode *type)
1753 {
1754         int err = 0;
1755
1756         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1757             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1758             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1759                 return -EOPNOTSUPP;
1760         }
1761
1762         if (flow_attr->num_of_specs == 0) {
1763                 type[0] = MLX4_FS_MC_SNIFFER;
1764                 type[1] = MLX4_FS_UC_SNIFFER;
1765         } else {
1766                 union ib_flow_spec *ib_spec;
1767
1768                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1769                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1770                         return -EINVAL;
1771
1772                 /* if all is zero than MC and UC */
1773                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1774                         type[0] = MLX4_FS_MC_SNIFFER;
1775                         type[1] = MLX4_FS_UC_SNIFFER;
1776                 } else {
1777                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1778                                             ib_spec->eth.mask.dst_mac[1],
1779                                             ib_spec->eth.mask.dst_mac[2],
1780                                             ib_spec->eth.mask.dst_mac[3],
1781                                             ib_spec->eth.mask.dst_mac[4],
1782                                             ib_spec->eth.mask.dst_mac[5]};
1783
1784                         /* Above xor was only on MC bit, non empty mask is valid
1785                          * only if this bit is set and rest are zero.
1786                          */
1787                         if (!is_zero_ether_addr(&mac[0]))
1788                                 return -EINVAL;
1789
1790                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1791                                 type[0] = MLX4_FS_MC_SNIFFER;
1792                         else
1793                                 type[0] = MLX4_FS_UC_SNIFFER;
1794                 }
1795         }
1796
1797         return err;
1798 }
1799
1800 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1801                                     struct ib_flow_attr *flow_attr,
1802                                     int domain)
1803 {
1804         int err = 0, i = 0, j = 0;
1805         struct mlx4_ib_flow *mflow;
1806         enum mlx4_net_trans_promisc_mode type[2];
1807         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1808         int is_bonded = mlx4_is_bonded(dev);
1809
1810         if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1811                 return ERR_PTR(-EINVAL);
1812
1813         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1814             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1815                 return ERR_PTR(-EOPNOTSUPP);
1816
1817         memset(type, 0, sizeof(type));
1818
1819         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1820         if (!mflow) {
1821                 err = -ENOMEM;
1822                 goto err_free;
1823         }
1824
1825         switch (flow_attr->type) {
1826         case IB_FLOW_ATTR_NORMAL:
1827                 /* If dont trap flag (continue match) is set, under specific
1828                  * condition traffic be replicated to given qp,
1829                  * without stealing it
1830                  */
1831                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1832                         err = mlx4_ib_add_dont_trap_rule(dev,
1833                                                          flow_attr,
1834                                                          type);
1835                         if (err)
1836                                 goto err_free;
1837                 } else {
1838                         type[0] = MLX4_FS_REGULAR;
1839                 }
1840                 break;
1841
1842         case IB_FLOW_ATTR_ALL_DEFAULT:
1843                 type[0] = MLX4_FS_ALL_DEFAULT;
1844                 break;
1845
1846         case IB_FLOW_ATTR_MC_DEFAULT:
1847                 type[0] = MLX4_FS_MC_DEFAULT;
1848                 break;
1849
1850         case IB_FLOW_ATTR_SNIFFER:
1851                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1852                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1853                 break;
1854
1855         default:
1856                 err = -EINVAL;
1857                 goto err_free;
1858         }
1859
1860         while (i < ARRAY_SIZE(type) && type[i]) {
1861                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1862                                             &mflow->reg_id[i].id);
1863                 if (err)
1864                         goto err_create_flow;
1865                 if (is_bonded) {
1866                         /* Application always sees one port so the mirror rule
1867                          * must be on port #2
1868                          */
1869                         flow_attr->port = 2;
1870                         err = __mlx4_ib_create_flow(qp, flow_attr,
1871                                                     domain, type[j],
1872                                                     &mflow->reg_id[j].mirror);
1873                         flow_attr->port = 1;
1874                         if (err)
1875                                 goto err_create_flow;
1876                         j++;
1877                 }
1878
1879                 i++;
1880         }
1881
1882         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1883                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1884                                                &mflow->reg_id[i].id);
1885                 if (err)
1886                         goto err_create_flow;
1887
1888                 if (is_bonded) {
1889                         flow_attr->port = 2;
1890                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1891                                                        &mflow->reg_id[j].mirror);
1892                         flow_attr->port = 1;
1893                         if (err)
1894                                 goto err_create_flow;
1895                         j++;
1896                 }
1897                 /* function to create mirror rule */
1898                 i++;
1899         }
1900
1901         return &mflow->ibflow;
1902
1903 err_create_flow:
1904         while (i) {
1905                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1906                                              mflow->reg_id[i].id);
1907                 i--;
1908         }
1909
1910         while (j) {
1911                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1912                                              mflow->reg_id[j].mirror);
1913                 j--;
1914         }
1915 err_free:
1916         kfree(mflow);
1917         return ERR_PTR(err);
1918 }
1919
1920 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1921 {
1922         int err, ret = 0;
1923         int i = 0;
1924         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1925         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1926
1927         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1928                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1929                 if (err)
1930                         ret = err;
1931                 if (mflow->reg_id[i].mirror) {
1932                         err = __mlx4_ib_destroy_flow(mdev->dev,
1933                                                      mflow->reg_id[i].mirror);
1934                         if (err)
1935                                 ret = err;
1936                 }
1937                 i++;
1938         }
1939
1940         kfree(mflow);
1941         return ret;
1942 }
1943
1944 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1945 {
1946         int err;
1947         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1948         struct mlx4_dev *dev = mdev->dev;
1949         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1950         struct mlx4_ib_steering *ib_steering = NULL;
1951         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1952         struct mlx4_flow_reg_id reg_id;
1953
1954         if (mdev->dev->caps.steering_mode ==
1955             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1956                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1957                 if (!ib_steering)
1958                         return -ENOMEM;
1959         }
1960
1961         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1962                                     !!(mqp->flags &
1963                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1964                                     prot, &reg_id.id);
1965         if (err) {
1966                 pr_err("multicast attach op failed, err %d\n", err);
1967                 goto err_malloc;
1968         }
1969
1970         reg_id.mirror = 0;
1971         if (mlx4_is_bonded(dev)) {
1972                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1973                                             (mqp->port == 1) ? 2 : 1,
1974                                             !!(mqp->flags &
1975                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1976                                             prot, &reg_id.mirror);
1977                 if (err)
1978                         goto err_add;
1979         }
1980
1981         err = add_gid_entry(ibqp, gid);
1982         if (err)
1983                 goto err_add;
1984
1985         if (ib_steering) {
1986                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1987                 ib_steering->reg_id = reg_id;
1988                 mutex_lock(&mqp->mutex);
1989                 list_add(&ib_steering->list, &mqp->steering_rules);
1990                 mutex_unlock(&mqp->mutex);
1991         }
1992         return 0;
1993
1994 err_add:
1995         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1996                               prot, reg_id.id);
1997         if (reg_id.mirror)
1998                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1999                                       prot, reg_id.mirror);
2000 err_malloc:
2001         kfree(ib_steering);
2002
2003         return err;
2004 }
2005
2006 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
2007 {
2008         struct mlx4_ib_gid_entry *ge;
2009         struct mlx4_ib_gid_entry *tmp;
2010         struct mlx4_ib_gid_entry *ret = NULL;
2011
2012         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
2013                 if (!memcmp(raw, ge->gid.raw, 16)) {
2014                         ret = ge;
2015                         break;
2016                 }
2017         }
2018
2019         return ret;
2020 }
2021
2022 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2023 {
2024         int err;
2025         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
2026         struct mlx4_dev *dev = mdev->dev;
2027         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
2028         struct net_device *ndev;
2029         struct mlx4_ib_gid_entry *ge;
2030         struct mlx4_flow_reg_id reg_id = {0, 0};
2031         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
2032
2033         if (mdev->dev->caps.steering_mode ==
2034             MLX4_STEERING_MODE_DEVICE_MANAGED) {
2035                 struct mlx4_ib_steering *ib_steering;
2036
2037                 mutex_lock(&mqp->mutex);
2038                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
2039                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
2040                                 list_del(&ib_steering->list);
2041                                 break;
2042                         }
2043                 }
2044                 mutex_unlock(&mqp->mutex);
2045                 if (&ib_steering->list == &mqp->steering_rules) {
2046                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
2047                         return -EINVAL;
2048                 }
2049                 reg_id = ib_steering->reg_id;
2050                 kfree(ib_steering);
2051         }
2052
2053         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2054                                     prot, reg_id.id);
2055         if (err)
2056                 return err;
2057
2058         if (mlx4_is_bonded(dev)) {
2059                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2060                                             prot, reg_id.mirror);
2061                 if (err)
2062                         return err;
2063         }
2064
2065         mutex_lock(&mqp->mutex);
2066         ge = find_gid_entry(mqp, gid->raw);
2067         if (ge) {
2068                 spin_lock_bh(&mdev->iboe.lock);
2069                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
2070                 if (ndev)
2071                         dev_hold(ndev);
2072                 spin_unlock_bh(&mdev->iboe.lock);
2073                 if (ndev)
2074                         dev_put(ndev);
2075                 list_del(&ge->list);
2076                 kfree(ge);
2077         } else
2078                 pr_warn("could not find mgid entry\n");
2079
2080         mutex_unlock(&mqp->mutex);
2081
2082         return 0;
2083 }
2084
2085 static int init_node_data(struct mlx4_ib_dev *dev)
2086 {
2087         struct ib_smp *in_mad  = NULL;
2088         struct ib_smp *out_mad = NULL;
2089         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
2090         int err = -ENOMEM;
2091
2092         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
2093         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
2094         if (!in_mad || !out_mad)
2095                 goto out;
2096
2097         init_query_mad(in_mad);
2098         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
2099         if (mlx4_is_master(dev->dev))
2100                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2101
2102         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2103         if (err)
2104                 goto out;
2105
2106         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2107
2108         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2109
2110         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2111         if (err)
2112                 goto out;
2113
2114         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2115         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2116
2117 out:
2118         kfree(in_mad);
2119         kfree(out_mad);
2120         return err;
2121 }
2122
2123 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2124                         char *buf)
2125 {
2126         struct mlx4_ib_dev *dev =
2127                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2128         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2129 }
2130
2131 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2132                         char *buf)
2133 {
2134         struct mlx4_ib_dev *dev =
2135                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2136         return sprintf(buf, "%x\n", dev->dev->rev_id);
2137 }
2138
2139 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2140                           char *buf)
2141 {
2142         struct mlx4_ib_dev *dev =
2143                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2144         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2145                        dev->dev->board_id);
2146 }
2147
2148 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
2149 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
2150 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
2151
2152 static struct device_attribute *mlx4_class_attributes[] = {
2153         &dev_attr_hw_rev,
2154         &dev_attr_hca_type,
2155         &dev_attr_board_id
2156 };
2157
2158 struct diag_counter {
2159         const char *name;
2160         u32 offset;
2161 };
2162
2163 #define DIAG_COUNTER(_name, _offset)                    \
2164         { .name = #_name, .offset = _offset }
2165
2166 static const struct diag_counter diag_basic[] = {
2167         DIAG_COUNTER(rq_num_lle, 0x00),
2168         DIAG_COUNTER(sq_num_lle, 0x04),
2169         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2170         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2171         DIAG_COUNTER(rq_num_lpe, 0x18),
2172         DIAG_COUNTER(sq_num_lpe, 0x1C),
2173         DIAG_COUNTER(rq_num_wrfe, 0x20),
2174         DIAG_COUNTER(sq_num_wrfe, 0x24),
2175         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2176         DIAG_COUNTER(sq_num_bre, 0x34),
2177         DIAG_COUNTER(sq_num_rire, 0x44),
2178         DIAG_COUNTER(rq_num_rire, 0x48),
2179         DIAG_COUNTER(sq_num_rae, 0x4C),
2180         DIAG_COUNTER(rq_num_rae, 0x50),
2181         DIAG_COUNTER(sq_num_roe, 0x54),
2182         DIAG_COUNTER(sq_num_tree, 0x5C),
2183         DIAG_COUNTER(sq_num_rree, 0x64),
2184         DIAG_COUNTER(rq_num_rnr, 0x68),
2185         DIAG_COUNTER(sq_num_rnr, 0x6C),
2186         DIAG_COUNTER(rq_num_oos, 0x100),
2187         DIAG_COUNTER(sq_num_oos, 0x104),
2188 };
2189
2190 static const struct diag_counter diag_ext[] = {
2191         DIAG_COUNTER(rq_num_dup, 0x130),
2192         DIAG_COUNTER(sq_num_to, 0x134),
2193 };
2194
2195 static const struct diag_counter diag_device_only[] = {
2196         DIAG_COUNTER(num_cqovf, 0x1A0),
2197         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2198 };
2199
2200 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2201                                                     u8 port_num)
2202 {
2203         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2204         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2205
2206         if (!diag[!!port_num].name)
2207                 return NULL;
2208
2209         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2210                                           diag[!!port_num].num_counters,
2211                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2212 }
2213
2214 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2215                                 struct rdma_hw_stats *stats,
2216                                 u8 port, int index)
2217 {
2218         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2219         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2220         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2221                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2222         int ret;
2223         int i;
2224
2225         ret = mlx4_query_diag_counters(dev->dev,
2226                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2227                                        diag[!!port].offset, hw_value,
2228                                        diag[!!port].num_counters, port);
2229
2230         if (ret)
2231                 return ret;
2232
2233         for (i = 0; i < diag[!!port].num_counters; i++)
2234                 stats->value[i] = hw_value[i];
2235
2236         return diag[!!port].num_counters;
2237 }
2238
2239 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2240                                          const char ***name,
2241                                          u32 **offset,
2242                                          u32 *num,
2243                                          bool port)
2244 {
2245         u32 num_counters;
2246
2247         num_counters = ARRAY_SIZE(diag_basic);
2248
2249         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2250                 num_counters += ARRAY_SIZE(diag_ext);
2251
2252         if (!port)
2253                 num_counters += ARRAY_SIZE(diag_device_only);
2254
2255         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2256         if (!*name)
2257                 return -ENOMEM;
2258
2259         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2260         if (!*offset)
2261                 goto err_name;
2262
2263         *num = num_counters;
2264
2265         return 0;
2266
2267 err_name:
2268         kfree(*name);
2269         return -ENOMEM;
2270 }
2271
2272 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2273                                        const char **name,
2274                                        u32 *offset,
2275                                        bool port)
2276 {
2277         int i;
2278         int j;
2279
2280         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2281                 name[i] = diag_basic[i].name;
2282                 offset[i] = diag_basic[i].offset;
2283         }
2284
2285         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2286                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2287                         name[j] = diag_ext[i].name;
2288                         offset[j] = diag_ext[i].offset;
2289                 }
2290         }
2291
2292         if (!port) {
2293                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2294                         name[j] = diag_device_only[i].name;
2295                         offset[j] = diag_device_only[i].offset;
2296                 }
2297         }
2298 }
2299
2300 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2301 {
2302         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2303         int i;
2304         int ret;
2305         bool per_port = !!(ibdev->dev->caps.flags2 &
2306                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2307
2308         if (mlx4_is_slave(ibdev->dev))
2309                 return 0;
2310
2311         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2312                 /* i == 1 means we are building port counters */
2313                 if (i && !per_port)
2314                         continue;
2315
2316                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2317                                                     &diag[i].offset,
2318                                                     &diag[i].num_counters, i);
2319                 if (ret)
2320                         goto err_alloc;
2321
2322                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2323                                            diag[i].offset, i);
2324         }
2325
2326         ibdev->ib_dev.get_hw_stats      = mlx4_ib_get_hw_stats;
2327         ibdev->ib_dev.alloc_hw_stats    = mlx4_ib_alloc_hw_stats;
2328
2329         return 0;
2330
2331 err_alloc:
2332         if (i) {
2333                 kfree(diag[i - 1].name);
2334                 kfree(diag[i - 1].offset);
2335         }
2336
2337         return ret;
2338 }
2339
2340 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2341 {
2342         int i;
2343
2344         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2345                 kfree(ibdev->diag_counters[i].offset);
2346                 kfree(ibdev->diag_counters[i].name);
2347         }
2348 }
2349
2350 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2351 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2352                                struct net_device *dev,
2353                                int port)
2354 {
2355         u64 new_smac = 0;
2356         u64 release_mac = MLX4_IB_INVALID_MAC;
2357         struct mlx4_ib_qp *qp;
2358
2359         read_lock(&dev_base_lock);
2360         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2361         read_unlock(&dev_base_lock);
2362
2363         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2364
2365         /* no need for update QP1 and mac registration in non-SRIOV */
2366         if (!mlx4_is_mfunc(ibdev->dev))
2367                 return;
2368
2369         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2370         qp = ibdev->qp1_proxy[port - 1];
2371         if (qp) {
2372                 int new_smac_index;
2373                 u64 old_smac;
2374                 struct mlx4_update_qp_params update_params;
2375
2376                 mutex_lock(&qp->mutex);
2377                 old_smac = qp->pri.smac;
2378                 if (new_smac == old_smac)
2379                         goto unlock;
2380
2381                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2382
2383                 if (new_smac_index < 0)
2384                         goto unlock;
2385
2386                 update_params.smac_index = new_smac_index;
2387                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2388                                    &update_params)) {
2389                         release_mac = new_smac;
2390                         goto unlock;
2391                 }
2392                 /* if old port was zero, no mac was yet registered for this QP */
2393                 if (qp->pri.smac_port)
2394                         release_mac = old_smac;
2395                 qp->pri.smac = new_smac;
2396                 qp->pri.smac_port = port;
2397                 qp->pri.smac_index = new_smac_index;
2398         }
2399
2400 unlock:
2401         if (release_mac != MLX4_IB_INVALID_MAC)
2402                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2403         if (qp)
2404                 mutex_unlock(&qp->mutex);
2405         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2406 }
2407
2408 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2409                                  struct net_device *dev,
2410                                  unsigned long event)
2411
2412 {
2413         struct mlx4_ib_iboe *iboe;
2414         int update_qps_port = -1;
2415         int port;
2416
2417         ASSERT_RTNL();
2418
2419         iboe = &ibdev->iboe;
2420
2421         spin_lock_bh(&iboe->lock);
2422         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2423
2424                 iboe->netdevs[port - 1] =
2425                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2426
2427                 if (dev == iboe->netdevs[port - 1] &&
2428                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2429                      event == NETDEV_UP || event == NETDEV_CHANGE))
2430                         update_qps_port = port;
2431
2432         }
2433         spin_unlock_bh(&iboe->lock);
2434
2435         if (update_qps_port > 0)
2436                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2437 }
2438
2439 static int mlx4_ib_netdev_event(struct notifier_block *this,
2440                                 unsigned long event, void *ptr)
2441 {
2442         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2443         struct mlx4_ib_dev *ibdev;
2444
2445         if (!net_eq(dev_net(dev), &init_net))
2446                 return NOTIFY_DONE;
2447
2448         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2449         mlx4_ib_scan_netdevs(ibdev, dev, event);
2450
2451         return NOTIFY_DONE;
2452 }
2453
2454 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2455 {
2456         int port;
2457         int slave;
2458         int i;
2459
2460         if (mlx4_is_master(ibdev->dev)) {
2461                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2462                      ++slave) {
2463                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2464                                 for (i = 0;
2465                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2466                                      ++i) {
2467                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2468                                         /* master has the identity virt2phys pkey mapping */
2469                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2470                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2471                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2472                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2473                                 }
2474                         }
2475                 }
2476                 /* initialize pkey cache */
2477                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2478                         for (i = 0;
2479                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2480                              ++i)
2481                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2482                                         (i) ? 0 : 0xFFFF;
2483                 }
2484         }
2485 }
2486
2487 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2488 {
2489         int i, j, eq = 0, total_eqs = 0;
2490
2491         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2492                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2493         if (!ibdev->eq_table)
2494                 return;
2495
2496         for (i = 1; i <= dev->caps.num_ports; i++) {
2497                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2498                      j++, total_eqs++) {
2499                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2500                                 continue;
2501                         ibdev->eq_table[eq] = total_eqs;
2502                         if (!mlx4_assign_eq(dev, i,
2503                                             &ibdev->eq_table[eq]))
2504                                 eq++;
2505                         else
2506                                 ibdev->eq_table[eq] = -1;
2507                 }
2508         }
2509
2510         for (i = eq; i < dev->caps.num_comp_vectors;
2511              ibdev->eq_table[i++] = -1)
2512                 ;
2513
2514         /* Advertise the new number of EQs to clients */
2515         ibdev->ib_dev.num_comp_vectors = eq;
2516 }
2517
2518 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2519 {
2520         int i;
2521         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2522
2523         /* no eqs were allocated */
2524         if (!ibdev->eq_table)
2525                 return;
2526
2527         /* Reset the advertised EQ number */
2528         ibdev->ib_dev.num_comp_vectors = 0;
2529
2530         for (i = 0; i < total_eqs; i++)
2531                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2532
2533         kfree(ibdev->eq_table);
2534         ibdev->eq_table = NULL;
2535 }
2536
2537 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2538                                struct ib_port_immutable *immutable)
2539 {
2540         struct ib_port_attr attr;
2541         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2542         int err;
2543
2544         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2545                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2546                 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2547         } else {
2548                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2549                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2550                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2551                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2552                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2553                 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2554                 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2555                     RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2556                         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2557         }
2558
2559         err = ib_query_port(ibdev, port_num, &attr);
2560         if (err)
2561                 return err;
2562
2563         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2564         immutable->gid_tbl_len = attr.gid_tbl_len;
2565
2566         return 0;
2567 }
2568
2569 static void get_fw_ver_str(struct ib_device *device, char *str,
2570                            size_t str_len)
2571 {
2572         struct mlx4_ib_dev *dev =
2573                 container_of(device, struct mlx4_ib_dev, ib_dev);
2574         snprintf(str, str_len, "%d.%d.%d",
2575                  (int) (dev->dev->caps.fw_ver >> 32),
2576                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2577                  (int) dev->dev->caps.fw_ver & 0xffff);
2578 }
2579
2580 static void *mlx4_ib_add(struct mlx4_dev *dev)
2581 {
2582         struct mlx4_ib_dev *ibdev;
2583         int num_ports = 0;
2584         int i, j;
2585         int err;
2586         struct mlx4_ib_iboe *iboe;
2587         int ib_num_ports = 0;
2588         int num_req_counters;
2589         int allocated;
2590         u32 counter_index;
2591         struct counter_index *new_counter_index = NULL;
2592
2593         pr_info_once("%s", mlx4_ib_version);
2594
2595         num_ports = 0;
2596         mlx4_foreach_ib_transport_port(i, dev)
2597                 num_ports++;
2598
2599         /* No point in registering a device with no ports... */
2600         if (num_ports == 0)
2601                 return NULL;
2602
2603         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2604         if (!ibdev) {
2605                 dev_err(&dev->persist->pdev->dev,
2606                         "Device struct alloc failed\n");
2607                 return NULL;
2608         }
2609
2610         iboe = &ibdev->iboe;
2611
2612         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2613                 goto err_dealloc;
2614
2615         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2616                 goto err_pd;
2617
2618         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2619                                  PAGE_SIZE);
2620         if (!ibdev->uar_map)
2621                 goto err_uar;
2622         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2623
2624         ibdev->dev = dev;
2625         ibdev->bond_next_port   = 0;
2626
2627         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2628         ibdev->ib_dev.owner             = THIS_MODULE;
2629         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2630         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2631         ibdev->num_ports                = num_ports;
2632         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2633                                                 1 : ibdev->num_ports;
2634         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2635         ibdev->ib_dev.dev.parent        = &dev->persist->pdev->dev;
2636         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2637         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2638         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2639
2640         if (dev->caps.userspace_caps)
2641                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2642         else
2643                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2644
2645         ibdev->ib_dev.uverbs_cmd_mask   =
2646                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2647                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2648                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2649                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2650                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2651                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2652                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2653                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2654                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2655                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2656                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2657                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2658                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2659                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2660                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2661                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2662                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2663                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2664                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2665                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2666                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2667                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2668                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2669                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2670
2671         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2672         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2673         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2674         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2675         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2676         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2677         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2678         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2679         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2680         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2681         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2682         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2683         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2684         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2685         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2686         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2687         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2688         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2689         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2690         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2691         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2692         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2693         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2694         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2695         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2696         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2697         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2698         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2699         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2700         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2701         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2702         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2703         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2704         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2705         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2706         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2707         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2708         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2709         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2710         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2711         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2712         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2713         ibdev->ib_dev.get_dev_fw_str    = get_fw_ver_str;
2714         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2715
2716         if (!mlx4_is_slave(ibdev->dev)) {
2717                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2718                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2719                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2720                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2721         }
2722
2723         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2724             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2725                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2726                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2727
2728                 ibdev->ib_dev.uverbs_cmd_mask |=
2729                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2730                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2731         }
2732
2733         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2734                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2735                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2736                 ibdev->ib_dev.uverbs_cmd_mask |=
2737                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2738                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2739         }
2740
2741         if (check_flow_steering_support(dev)) {
2742                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2743                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2744                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2745
2746                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2747                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2748                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2749         }
2750
2751         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2752                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2753                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2754                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2755
2756         mlx4_ib_alloc_eqs(dev, ibdev);
2757
2758         spin_lock_init(&iboe->lock);
2759
2760         if (init_node_data(ibdev))
2761                 goto err_map;
2762         mlx4_init_sl2vl_tbl(ibdev);
2763
2764         for (i = 0; i < ibdev->num_ports; ++i) {
2765                 mutex_init(&ibdev->counters_table[i].mutex);
2766                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2767         }
2768
2769         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2770         for (i = 0; i < num_req_counters; ++i) {
2771                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2772                 allocated = 0;
2773                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2774                                                 IB_LINK_LAYER_ETHERNET) {
2775                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2776                         /* if failed to allocate a new counter, use default */
2777                         if (err)
2778                                 counter_index =
2779                                         mlx4_get_default_counter_index(dev,
2780                                                                        i + 1);
2781                         else
2782                                 allocated = 1;
2783                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2784                         counter_index = mlx4_get_default_counter_index(dev,
2785                                                                        i + 1);
2786                 }
2787                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2788                                             GFP_KERNEL);
2789                 if (!new_counter_index) {
2790                         if (allocated)
2791                                 mlx4_counter_free(ibdev->dev, counter_index);
2792                         goto err_counter;
2793                 }
2794                 new_counter_index->index = counter_index;
2795                 new_counter_index->allocated = allocated;
2796                 list_add_tail(&new_counter_index->list,
2797                               &ibdev->counters_table[i].counters_list);
2798                 ibdev->counters_table[i].default_counter = counter_index;
2799                 pr_info("counter index %d for port %d allocated %d\n",
2800                         counter_index, i + 1, allocated);
2801         }
2802         if (mlx4_is_bonded(dev))
2803                 for (i = 1; i < ibdev->num_ports ; ++i) {
2804                         new_counter_index =
2805                                         kmalloc(sizeof(struct counter_index),
2806                                                 GFP_KERNEL);
2807                         if (!new_counter_index)
2808                                 goto err_counter;
2809                         new_counter_index->index = counter_index;
2810                         new_counter_index->allocated = 0;
2811                         list_add_tail(&new_counter_index->list,
2812                                       &ibdev->counters_table[i].counters_list);
2813                         ibdev->counters_table[i].default_counter =
2814                                                                 counter_index;
2815                 }
2816
2817         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2818                 ib_num_ports++;
2819
2820         spin_lock_init(&ibdev->sm_lock);
2821         mutex_init(&ibdev->cap_mask_mutex);
2822         INIT_LIST_HEAD(&ibdev->qp_list);
2823         spin_lock_init(&ibdev->reset_flow_resource_lock);
2824
2825         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2826             ib_num_ports) {
2827                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2828                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2829                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2830                                             &ibdev->steer_qpn_base, 0);
2831                 if (err)
2832                         goto err_counter;
2833
2834                 ibdev->ib_uc_qpns_bitmap =
2835                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2836                                 sizeof(long),
2837                                 GFP_KERNEL);
2838                 if (!ibdev->ib_uc_qpns_bitmap)
2839                         goto err_steer_qp_release;
2840
2841                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2842                         bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2843                                     ibdev->steer_qpn_count);
2844                         err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2845                                         dev, ibdev->steer_qpn_base,
2846                                         ibdev->steer_qpn_base +
2847                                         ibdev->steer_qpn_count - 1);
2848                         if (err)
2849                                 goto err_steer_free_bitmap;
2850                 } else {
2851                         bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2852                                     ibdev->steer_qpn_count);
2853                 }
2854         }
2855
2856         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2857                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2858
2859         if (mlx4_ib_alloc_diag_counters(ibdev))
2860                 goto err_steer_free_bitmap;
2861
2862         if (ib_register_device(&ibdev->ib_dev, NULL))
2863                 goto err_diag_counters;
2864
2865         if (mlx4_ib_mad_init(ibdev))
2866                 goto err_reg;
2867
2868         if (mlx4_ib_init_sriov(ibdev))
2869                 goto err_mad;
2870
2871         if (!iboe->nb.notifier_call) {
2872                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2873                 err = register_netdevice_notifier(&iboe->nb);
2874                 if (err) {
2875                         iboe->nb.notifier_call = NULL;
2876                         goto err_notif;
2877                 }
2878         }
2879         if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2880                 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2881                 if (err)
2882                         goto err_notif;
2883         }
2884
2885         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2886                 if (device_create_file(&ibdev->ib_dev.dev,
2887                                        mlx4_class_attributes[j]))
2888                         goto err_notif;
2889         }
2890
2891         ibdev->ib_active = true;
2892         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2893                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2894                                          &ibdev->ib_dev);
2895
2896         if (mlx4_is_mfunc(ibdev->dev))
2897                 init_pkeys(ibdev);
2898
2899         /* create paravirt contexts for any VFs which are active */
2900         if (mlx4_is_master(ibdev->dev)) {
2901                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2902                         if (j == mlx4_master_func_num(ibdev->dev))
2903                                 continue;
2904                         if (mlx4_is_slave_active(ibdev->dev, j))
2905                                 do_slave_init(ibdev, j, 1);
2906                 }
2907         }
2908         return ibdev;
2909
2910 err_notif:
2911         if (ibdev->iboe.nb.notifier_call) {
2912                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2913                         pr_warn("failure unregistering notifier\n");
2914                 ibdev->iboe.nb.notifier_call = NULL;
2915         }
2916         flush_workqueue(wq);
2917
2918         mlx4_ib_close_sriov(ibdev);
2919
2920 err_mad:
2921         mlx4_ib_mad_cleanup(ibdev);
2922
2923 err_reg:
2924         ib_unregister_device(&ibdev->ib_dev);
2925
2926 err_diag_counters:
2927         mlx4_ib_diag_cleanup(ibdev);
2928
2929 err_steer_free_bitmap:
2930         kfree(ibdev->ib_uc_qpns_bitmap);
2931
2932 err_steer_qp_release:
2933         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2934                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2935                                       ibdev->steer_qpn_count);
2936 err_counter:
2937         for (i = 0; i < ibdev->num_ports; ++i)
2938                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2939
2940 err_map:
2941         mlx4_ib_free_eqs(dev, ibdev);
2942         iounmap(ibdev->uar_map);
2943
2944 err_uar:
2945         mlx4_uar_free(dev, &ibdev->priv_uar);
2946
2947 err_pd:
2948         mlx4_pd_free(dev, ibdev->priv_pdn);
2949
2950 err_dealloc:
2951         ib_dealloc_device(&ibdev->ib_dev);
2952
2953         return NULL;
2954 }
2955
2956 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2957 {
2958         int offset;
2959
2960         WARN_ON(!dev->ib_uc_qpns_bitmap);
2961
2962         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2963                                          dev->steer_qpn_count,
2964                                          get_count_order(count));
2965         if (offset < 0)
2966                 return offset;
2967
2968         *qpn = dev->steer_qpn_base + offset;
2969         return 0;
2970 }
2971
2972 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2973 {
2974         if (!qpn ||
2975             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2976                 return;
2977
2978         BUG_ON(qpn < dev->steer_qpn_base);
2979
2980         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2981                               qpn - dev->steer_qpn_base,
2982                               get_count_order(count));
2983 }
2984
2985 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2986                          int is_attach)
2987 {
2988         int err;
2989         size_t flow_size;
2990         struct ib_flow_attr *flow = NULL;
2991         struct ib_flow_spec_ib *ib_spec;
2992
2993         if (is_attach) {
2994                 flow_size = sizeof(struct ib_flow_attr) +
2995                             sizeof(struct ib_flow_spec_ib);
2996                 flow = kzalloc(flow_size, GFP_KERNEL);
2997                 if (!flow)
2998                         return -ENOMEM;
2999                 flow->port = mqp->port;
3000                 flow->num_of_specs = 1;
3001                 flow->size = flow_size;
3002                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
3003                 ib_spec->type = IB_FLOW_SPEC_IB;
3004                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
3005                 /* Add an empty rule for IB L2 */
3006                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
3007
3008                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
3009                                             IB_FLOW_DOMAIN_NIC,
3010                                             MLX4_FS_REGULAR,
3011                                             &mqp->reg_id);
3012         } else {
3013                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
3014         }
3015         kfree(flow);
3016         return err;
3017 }
3018
3019 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
3020 {
3021         struct mlx4_ib_dev *ibdev = ibdev_ptr;
3022         int p;
3023         int i;
3024
3025         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
3026                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
3027         ibdev->ib_active = false;
3028         flush_workqueue(wq);
3029
3030         mlx4_ib_close_sriov(ibdev);
3031         mlx4_ib_mad_cleanup(ibdev);
3032         ib_unregister_device(&ibdev->ib_dev);
3033         mlx4_ib_diag_cleanup(ibdev);
3034         if (ibdev->iboe.nb.notifier_call) {
3035                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
3036                         pr_warn("failure unregistering notifier\n");
3037                 ibdev->iboe.nb.notifier_call = NULL;
3038         }
3039
3040         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
3041                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3042                                       ibdev->steer_qpn_count);
3043                 kfree(ibdev->ib_uc_qpns_bitmap);
3044         }
3045
3046         iounmap(ibdev->uar_map);
3047         for (p = 0; p < ibdev->num_ports; ++p)
3048                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3049
3050         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3051                 mlx4_CLOSE_PORT(dev, p);
3052
3053         mlx4_ib_free_eqs(dev, ibdev);
3054
3055         mlx4_uar_free(dev, &ibdev->priv_uar);
3056         mlx4_pd_free(dev, ibdev->priv_pdn);
3057         ib_dealloc_device(&ibdev->ib_dev);
3058 }
3059
3060 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3061 {
3062         struct mlx4_ib_demux_work **dm = NULL;
3063         struct mlx4_dev *dev = ibdev->dev;
3064         int i;
3065         unsigned long flags;
3066         struct mlx4_active_ports actv_ports;
3067         unsigned int ports;
3068         unsigned int first_port;
3069
3070         if (!mlx4_is_master(dev))
3071                 return;
3072
3073         actv_ports = mlx4_get_active_ports(dev, slave);
3074         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3075         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3076
3077         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3078         if (!dm)
3079                 return;
3080
3081         for (i = 0; i < ports; i++) {
3082                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3083                 if (!dm[i]) {
3084                         while (--i >= 0)
3085                                 kfree(dm[i]);
3086                         goto out;
3087                 }
3088                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3089                 dm[i]->port = first_port + i + 1;
3090                 dm[i]->slave = slave;
3091                 dm[i]->do_init = do_init;
3092                 dm[i]->dev = ibdev;
3093         }
3094         /* initialize or tear down tunnel QPs for the slave */
3095         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3096         if (!ibdev->sriov.is_going_down) {
3097                 for (i = 0; i < ports; i++)
3098                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3099                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3100         } else {
3101                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3102                 for (i = 0; i < ports; i++)
3103                         kfree(dm[i]);
3104         }
3105 out:
3106         kfree(dm);
3107         return;
3108 }
3109
3110 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3111 {
3112         struct mlx4_ib_qp *mqp;
3113         unsigned long flags_qp;
3114         unsigned long flags_cq;
3115         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3116         struct list_head    cq_notify_list;
3117         struct mlx4_cq *mcq;
3118         unsigned long flags;
3119
3120         pr_warn("mlx4_ib_handle_catas_error was started\n");
3121         INIT_LIST_HEAD(&cq_notify_list);
3122
3123         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3124         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3125
3126         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3127                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3128                 if (mqp->sq.tail != mqp->sq.head) {
3129                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3130                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3131                         if (send_mcq->mcq.comp &&
3132                             mqp->ibqp.send_cq->comp_handler) {
3133                                 if (!send_mcq->mcq.reset_notify_added) {
3134                                         send_mcq->mcq.reset_notify_added = 1;
3135                                         list_add_tail(&send_mcq->mcq.reset_notify,
3136                                                       &cq_notify_list);
3137                                 }
3138                         }
3139                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3140                 }
3141                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3142                 /* Now, handle the QP's receive queue */
3143                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3144                 /* no handling is needed for SRQ */
3145                 if (!mqp->ibqp.srq) {
3146                         if (mqp->rq.tail != mqp->rq.head) {
3147                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3148                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3149                                 if (recv_mcq->mcq.comp &&
3150                                     mqp->ibqp.recv_cq->comp_handler) {
3151                                         if (!recv_mcq->mcq.reset_notify_added) {
3152                                                 recv_mcq->mcq.reset_notify_added = 1;
3153                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3154                                                               &cq_notify_list);
3155                                         }
3156                                 }
3157                                 spin_unlock_irqrestore(&recv_mcq->lock,
3158                                                        flags_cq);
3159                         }
3160                 }
3161                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3162         }
3163
3164         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3165                 mcq->comp(mcq);
3166         }
3167         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3168         pr_warn("mlx4_ib_handle_catas_error ended\n");
3169 }
3170
3171 static void handle_bonded_port_state_event(struct work_struct *work)
3172 {
3173         struct ib_event_work *ew =
3174                 container_of(work, struct ib_event_work, work);
3175         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3176         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3177         int i;
3178         struct ib_event ibev;
3179
3180         kfree(ew);
3181         spin_lock_bh(&ibdev->iboe.lock);
3182         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3183                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3184                 enum ib_port_state curr_port_state;
3185
3186                 if (!curr_netdev)
3187                         continue;
3188
3189                 curr_port_state =
3190                         (netif_running(curr_netdev) &&
3191                          netif_carrier_ok(curr_netdev)) ?
3192                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3193
3194                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3195                         curr_port_state : IB_PORT_ACTIVE;
3196         }
3197         spin_unlock_bh(&ibdev->iboe.lock);
3198
3199         ibev.device = &ibdev->ib_dev;
3200         ibev.element.port_num = 1;
3201         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3202                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3203
3204         ib_dispatch_event(&ibev);
3205 }
3206
3207 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3208 {
3209         u64 sl2vl;
3210         int err;
3211
3212         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3213         if (err) {
3214                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3215                        port, err);
3216                 sl2vl = 0;
3217         }
3218         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3219 }
3220
3221 static void ib_sl2vl_update_work(struct work_struct *work)
3222 {
3223         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3224         struct mlx4_ib_dev *mdev = ew->ib_dev;
3225         int port = ew->port;
3226
3227         mlx4_ib_sl2vl_update(mdev, port);
3228
3229         kfree(ew);
3230 }
3231
3232 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3233                                      int port)
3234 {
3235         struct ib_event_work *ew;
3236
3237         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3238         if (ew) {
3239                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3240                 ew->port = port;
3241                 ew->ib_dev = ibdev;
3242                 queue_work(wq, &ew->work);
3243         }
3244 }
3245
3246 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3247                           enum mlx4_dev_event event, unsigned long param)
3248 {
3249         struct ib_event ibev;
3250         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3251         struct mlx4_eqe *eqe = NULL;
3252         struct ib_event_work *ew;
3253         int p = 0;
3254
3255         if (mlx4_is_bonded(dev) &&
3256             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3257             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3258                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3259                 if (!ew)
3260                         return;
3261                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3262                 ew->ib_dev = ibdev;
3263                 queue_work(wq, &ew->work);
3264                 return;
3265         }
3266
3267         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3268                 eqe = (struct mlx4_eqe *)param;
3269         else
3270                 p = (int) param;
3271
3272         switch (event) {
3273         case MLX4_DEV_EVENT_PORT_UP:
3274                 if (p > ibdev->num_ports)
3275                         return;
3276                 if (!mlx4_is_slave(dev) &&
3277                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3278                         IB_LINK_LAYER_INFINIBAND) {
3279                         if (mlx4_is_master(dev))
3280                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3281                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3282                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3283                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3284                 }
3285                 ibev.event = IB_EVENT_PORT_ACTIVE;
3286                 break;
3287
3288         case MLX4_DEV_EVENT_PORT_DOWN:
3289                 if (p > ibdev->num_ports)
3290                         return;
3291                 ibev.event = IB_EVENT_PORT_ERR;
3292                 break;
3293
3294         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3295                 ibdev->ib_active = false;
3296                 ibev.event = IB_EVENT_DEVICE_FATAL;
3297                 mlx4_ib_handle_catas_error(ibdev);
3298                 break;
3299
3300         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3301                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3302                 if (!ew)
3303                         break;
3304
3305                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3306                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3307                 ew->ib_dev = ibdev;
3308                 /* need to queue only for port owner, which uses GEN_EQE */
3309                 if (mlx4_is_master(dev))
3310                         queue_work(wq, &ew->work);
3311                 else
3312                         handle_port_mgmt_change_event(&ew->work);
3313                 return;
3314
3315         case MLX4_DEV_EVENT_SLAVE_INIT:
3316                 /* here, p is the slave id */
3317                 do_slave_init(ibdev, p, 1);
3318                 if (mlx4_is_master(dev)) {
3319                         int i;
3320
3321                         for (i = 1; i <= ibdev->num_ports; i++) {
3322                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3323                                         == IB_LINK_LAYER_INFINIBAND)
3324                                         mlx4_ib_slave_alias_guid_event(ibdev,
3325                                                                        p, i,
3326                                                                        1);
3327                         }
3328                 }
3329                 return;
3330
3331         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3332                 if (mlx4_is_master(dev)) {
3333                         int i;
3334
3335                         for (i = 1; i <= ibdev->num_ports; i++) {
3336                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3337                                         == IB_LINK_LAYER_INFINIBAND)
3338                                         mlx4_ib_slave_alias_guid_event(ibdev,
3339                                                                        p, i,
3340                                                                        0);
3341                         }
3342                 }
3343                 /* here, p is the slave id */
3344                 do_slave_init(ibdev, p, 0);
3345                 return;
3346
3347         default:
3348                 return;
3349         }
3350
3351         ibev.device           = ibdev_ptr;
3352         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3353
3354         ib_dispatch_event(&ibev);
3355 }
3356
3357 static struct mlx4_interface mlx4_ib_interface = {
3358         .add            = mlx4_ib_add,
3359         .remove         = mlx4_ib_remove,
3360         .event          = mlx4_ib_event,
3361         .protocol       = MLX4_PROT_IB_IPV6,
3362         .flags          = MLX4_INTFF_BONDING
3363 };
3364
3365 static int __init mlx4_ib_init(void)
3366 {
3367         int err;
3368
3369         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3370         if (!wq)
3371                 return -ENOMEM;
3372
3373         err = mlx4_ib_mcg_init();
3374         if (err)
3375                 goto clean_wq;
3376
3377         err = mlx4_register_interface(&mlx4_ib_interface);
3378         if (err)
3379                 goto clean_mcg;
3380
3381         return 0;
3382
3383 clean_mcg:
3384         mlx4_ib_mcg_destroy();
3385
3386 clean_wq:
3387         destroy_workqueue(wq);
3388         return err;
3389 }
3390
3391 static void __exit mlx4_ib_cleanup(void)
3392 {
3393         mlx4_unregister_interface(&mlx4_ib_interface);
3394         mlx4_ib_mcg_destroy();
3395         destroy_workqueue(wq);
3396 }
3397
3398 module_init(mlx4_ib_init);
3399 module_exit(mlx4_ib_cleanup);