drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <linux/sched/mm.h>
  43 #include <linux/sched/task.h>
  44
  45 #include <net/ipv6.h>
  46 #include <net/addrconf.h>
  47 #include <net/devlink.h>
  48
  49 #include <rdma/ib_smi.h>
  50 #include <rdma/ib_user_verbs.h>
  51 #include <rdma/ib_addr.h>
  52 #include <rdma/ib_cache.h>
  53
  54 #include <net/bonding.h>
  55
  56 #include <linux/mlx4/driver.h>
  57 #include <linux/mlx4/cmd.h>
  58 #include <linux/mlx4/qp.h>
  59
  60 #include "mlx4_ib.h"
  61 #include <rdma/mlx4-abi.h>
  62
  63 #define DRV_NAME        MLX4_IB_DRV_NAME
  64 #define DRV_VERSION     "4.0-0"
  65
  66 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  67 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  68 #define MLX4_IB_CARD_REV_A0   0xA0
  69
  70 MODULE_AUTHOR("Roland Dreier");
  71 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  72 MODULE_LICENSE("Dual BSD/GPL");
  73
  74 int mlx4_ib_sm_guid_assign = 0;
  75 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  76 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  77
  78 static const char mlx4_ib_version[] =
  79         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  80         DRV_VERSION "\n";
  81
  82 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  83 static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device,
  84                                                     u8 port_num);
  85
  86 static struct workqueue_struct *wq;
  87
  88 static void init_query_mad(struct ib_smp *mad)
  89 {
  90         mad->base_version  = 1;
  91         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  92         mad->class_version = 1;
  93         mad->method        = IB_MGMT_METHOD_GET;
  94 }
  95
  96 static int check_flow_steering_support(struct mlx4_dev *dev)
  97 {
  98         int eth_num_ports = 0;
  99         int ib_num_ports = 0;
 100
 101         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
 102
 103         if (dmfs) {
 104                 int i;
 105                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 106                         eth_num_ports++;
 107                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 108                         ib_num_ports++;
 109                 dmfs &= (!ib_num_ports ||
 110                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 111                         (!eth_num_ports ||
 112                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 113                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 114                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 115                         dmfs = 0;
 116                 }
 117         }
 118         return dmfs;
 119 }
 120
 121 static int num_ib_ports(struct mlx4_dev *dev)
 122 {
 123         int ib_ports = 0;
 124         int i;
 125
 126         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 127                 ib_ports++;
 128
 129         return ib_ports;
 130 }
 131
 132 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 133 {
 134         struct mlx4_ib_dev *ibdev = to_mdev(device);
 135         struct net_device *dev;
 136
 137         rcu_read_lock();
 138         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 139
 140         if (dev) {
 141                 if (mlx4_is_bonded(ibdev->dev)) {
 142                         struct net_device *upper = NULL;
 143
 144                         upper = netdev_master_upper_dev_get_rcu(dev);
 145                         if (upper) {
 146                                 struct net_device *active;
 147
 148                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 149                                 if (active)
 150                                         dev = active;
 151                         }
 152                 }
 153         }
 154         if (dev)
 155                 dev_hold(dev);
 156
 157         rcu_read_unlock();
 158         return dev;
 159 }
 160
 161 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 162                                   struct mlx4_ib_dev *ibdev,
 163                                   u8 port_num)
 164 {
 165         struct mlx4_cmd_mailbox *mailbox;
 166         int err;
 167         struct mlx4_dev *dev = ibdev->dev;
 168         int i;
 169         union ib_gid *gid_tbl;
 170
 171         mailbox = mlx4_alloc_cmd_mailbox(dev);
 172         if (IS_ERR(mailbox))
 173                 return -ENOMEM;
 174
 175         gid_tbl = mailbox->buf;
 176
 177         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 178                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 179
 180         err = mlx4_cmd(dev, mailbox->dma,
 181                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 182                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 183                        MLX4_CMD_WRAPPED);
 184         if (mlx4_is_bonded(dev))
 185                 err += mlx4_cmd(dev, mailbox->dma,
 186                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 187                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 188                                 MLX4_CMD_WRAPPED);
 189
 190         mlx4_free_cmd_mailbox(dev, mailbox);
 191         return err;
 192 }
 193
 194 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 195                                      struct mlx4_ib_dev *ibdev,
 196                                      u8 port_num)
 197 {
 198         struct mlx4_cmd_mailbox *mailbox;
 199         int err;
 200         struct mlx4_dev *dev = ibdev->dev;
 201         int i;
 202         struct {
 203                 union ib_gid    gid;
 204                 __be32          rsrvd1[2];
 205                 __be16          rsrvd2;
 206                 u8              type;
 207                 u8              version;
 208                 __be32          rsrvd3;
 209         } *gid_tbl;
 210
 211         mailbox = mlx4_alloc_cmd_mailbox(dev);
 212         if (IS_ERR(mailbox))
 213                 return -ENOMEM;
 214
 215         gid_tbl = mailbox->buf;
 216         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 217                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 218                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 219                         gid_tbl[i].version = 2;
 220                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 221                                 gid_tbl[i].type = 1;
 222                 }
 223         }
 224
 225         err = mlx4_cmd(dev, mailbox->dma,
 226                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 227                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 228                        MLX4_CMD_WRAPPED);
 229         if (mlx4_is_bonded(dev))
 230                 err += mlx4_cmd(dev, mailbox->dma,
 231                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 232                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 233                                 MLX4_CMD_WRAPPED);
 234
 235         mlx4_free_cmd_mailbox(dev, mailbox);
 236         return err;
 237 }
 238
 239 static int mlx4_ib_update_gids(struct gid_entry *gids,
 240                                struct mlx4_ib_dev *ibdev,
 241                                u8 port_num)
 242 {
 243         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 244                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 245
 246         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 247 }
 248
 249 static int mlx4_ib_add_gid(const struct ib_gid_attr *attr, void **context)
 250 {
 251         struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
 252         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 253         struct mlx4_port_gid_table   *port_gid_table;
 254         int free = -1, found = -1;
 255         int ret = 0;
 256         int hw_update = 0;
 257         int i;
 258         struct gid_entry *gids = NULL;
 259
 260         if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
 261                 return -EINVAL;
 262
 263         if (attr->port_num > MLX4_MAX_PORTS)
 264                 return -EINVAL;
 265
 266         if (!context)
 267                 return -EINVAL;
 268
 269         port_gid_table = &iboe->gids[attr->port_num - 1];
 270         spin_lock_bh(&iboe->lock);
 271         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 272                 if (!memcmp(&port_gid_table->gids[i].gid,
 273                             &attr->gid, sizeof(attr->gid)) &&
 274                     port_gid_table->gids[i].gid_type == attr->gid_type)  {
 275                         found = i;
 276                         break;
 277                 }
 278                 if (free < 0 && rdma_is_zero_gid(&port_gid_table->gids[i].gid))
 279                         free = i; /* HW has space */
 280         }
 281
 282         if (found < 0) {
 283                 if (free < 0) {
 284                         ret = -ENOSPC;
 285                 } else {
 286                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 287                         if (!port_gid_table->gids[free].ctx) {
 288                                 ret = -ENOMEM;
 289                         } else {
 290                                 *context = port_gid_table->gids[free].ctx;
 291                                 memcpy(&port_gid_table->gids[free].gid,
 292                                        &attr->gid, sizeof(attr->gid));
 293                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 294                                 port_gid_table->gids[free].ctx->real_index = free;
 295                                 port_gid_table->gids[free].ctx->refcount = 1;
 296                                 hw_update = 1;
 297                         }
 298                 }
 299         } else {
 300                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 301                 *context = ctx;
 302                 ctx->refcount++;
 303         }
 304         if (!ret && hw_update) {
 305                 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
 306                                      GFP_ATOMIC);
 307                 if (!gids) {
 308                         ret = -ENOMEM;
 309                 } else {
 310                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 311                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 312                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 313                         }
 314                 }
 315         }
 316         spin_unlock_bh(&iboe->lock);
 317
 318         if (!ret && hw_update) {
 319                 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
 320                 kfree(gids);
 321         }
 322
 323         return ret;
 324 }
 325
 326 static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context)
 327 {
 328         struct gid_cache_context *ctx = *context;
 329         struct mlx4_ib_dev *ibdev = to_mdev(attr->device);
 330         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 331         struct mlx4_port_gid_table   *port_gid_table;
 332         int ret = 0;
 333         int hw_update = 0;
 334         struct gid_entry *gids = NULL;
 335
 336         if (!rdma_cap_roce_gid_table(attr->device, attr->port_num))
 337                 return -EINVAL;
 338
 339         if (attr->port_num > MLX4_MAX_PORTS)
 340                 return -EINVAL;
 341
 342         port_gid_table = &iboe->gids[attr->port_num - 1];
 343         spin_lock_bh(&iboe->lock);
 344         if (ctx) {
 345                 ctx->refcount--;
 346                 if (!ctx->refcount) {
 347                         unsigned int real_index = ctx->real_index;
 348
 349                         memset(&port_gid_table->gids[real_index].gid, 0,
 350                                sizeof(port_gid_table->gids[real_index].gid));
 351                         kfree(port_gid_table->gids[real_index].ctx);
 352                         port_gid_table->gids[real_index].ctx = NULL;
 353                         hw_update = 1;
 354                 }
 355         }
 356         if (!ret && hw_update) {
 357                 int i;
 358
 359                 gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids),
 360                                      GFP_ATOMIC);
 361                 if (!gids) {
 362                         ret = -ENOMEM;
 363                 } else {
 364                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 365                                 memcpy(&gids[i].gid,
 366                                        &port_gid_table->gids[i].gid,
 367                                        sizeof(union ib_gid));
 368                                 gids[i].gid_type =
 369                                     port_gid_table->gids[i].gid_type;
 370                         }
 371                 }
 372         }
 373         spin_unlock_bh(&iboe->lock);
 374
 375         if (!ret && hw_update) {
 376                 ret = mlx4_ib_update_gids(gids, ibdev, attr->port_num);
 377                 kfree(gids);
 378         }
 379         return ret;
 380 }
 381
 382 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 383                                     const struct ib_gid_attr *attr)
 384 {
 385         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 386         struct gid_cache_context *ctx = NULL;
 387         struct mlx4_port_gid_table   *port_gid_table;
 388         int real_index = -EINVAL;
 389         int i;
 390         unsigned long flags;
 391         u8 port_num = attr->port_num;
 392
 393         if (port_num > MLX4_MAX_PORTS)
 394                 return -EINVAL;
 395
 396         if (mlx4_is_bonded(ibdev->dev))
 397                 port_num = 1;
 398
 399         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 400                 return attr->index;
 401
 402         spin_lock_irqsave(&iboe->lock, flags);
 403         port_gid_table = &iboe->gids[port_num - 1];
 404
 405         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 406                 if (!memcmp(&port_gid_table->gids[i].gid,
 407                             &attr->gid, sizeof(attr->gid)) &&
 408                     attr->gid_type == port_gid_table->gids[i].gid_type) {
 409                         ctx = port_gid_table->gids[i].ctx;
 410                         break;
 411                 }
 412         if (ctx)
 413                 real_index = ctx->real_index;
 414         spin_unlock_irqrestore(&iboe->lock, flags);
 415         return real_index;
 416 }
 417
 418 #define field_avail(type, fld, sz) (offsetof(type, fld) + \
 419                                     sizeof(((type *)0)->fld) <= (sz))
 420
 421 static int mlx4_ib_query_device(struct ib_device *ibdev,
 422                                 struct ib_device_attr *props,
 423                                 struct ib_udata *uhw)
 424 {
 425         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 426         struct ib_smp *in_mad  = NULL;
 427         struct ib_smp *out_mad = NULL;
 428         int err;
 429         int have_ib_ports;
 430         struct mlx4_uverbs_ex_query_device cmd;
 431         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 432         struct mlx4_clock_params clock_params;
 433
 434         if (uhw->inlen) {
 435                 if (uhw->inlen < sizeof(cmd))
 436                         return -EINVAL;
 437
 438                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 439                 if (err)
 440                         return err;
 441
 442                 if (cmd.comp_mask)
 443                         return -EINVAL;
 444
 445                 if (cmd.reserved)
 446                         return -EINVAL;
 447         }
 448
 449         resp.response_length = offsetof(typeof(resp), response_length) +
 450                 sizeof(resp.response_length);
 451         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 452         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 453         err = -ENOMEM;
 454         if (!in_mad || !out_mad)
 455                 goto out;
 456
 457         init_query_mad(in_mad);
 458         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 459
 460         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 461                            1, NULL, NULL, in_mad, out_mad);
 462         if (err)
 463                 goto out;
 464
 465         memset(props, 0, sizeof *props);
 466
 467         have_ib_ports = num_ib_ports(dev->dev);
 468
 469         props->fw_ver = dev->dev->caps.fw_ver;
 470         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 471                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 472                 IB_DEVICE_SYS_IMAGE_GUID                |
 473                 IB_DEVICE_RC_RNR_NAK_GEN                |
 474                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 475         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 476                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 477         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 478                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 479         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 480                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 481         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 482                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 483         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 484                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 485         if (dev->dev->caps.max_gso_sz &&
 486             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 487             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 488                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 489         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 490                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 491         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 492             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 493             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 494                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 495         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 496                 props->device_cap_flags |= IB_DEVICE_XRC;
 497         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 498                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 499         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 500                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 501                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 502                 else
 503                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 504         }
 505         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 506                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 507
 508         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 509
 510         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 511                 0xffffff;
 512         props->vendor_part_id      = dev->dev->persist->pdev->device;
 513         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 514         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 515
 516         props->max_mr_size         = ~0ull;
 517         props->page_size_cap       = dev->dev->caps.page_size_cap;
 518         props->max_qp              = dev->dev->quotas.qp;
 519         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 520         props->max_send_sge =
 521                 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
 522         props->max_recv_sge =
 523                 min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg);
 524         props->max_sge_rd = MLX4_MAX_SGE_RD;
 525         props->max_cq              = dev->dev->quotas.cq;
 526         props->max_cqe             = dev->dev->caps.max_cqes;
 527         props->max_mr              = dev->dev->quotas.mpt;
 528         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 529         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 530         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 531         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 532         props->max_srq             = dev->dev->quotas.srq;
 533         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 534         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 535         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 536         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 537         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 538                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 539         props->masked_atomic_cap   = props->atomic_cap;
 540         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 541         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 542         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 543         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 544                                            props->max_mcast_grp;
 545         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 546         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 547         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 548         props->max_ah = INT_MAX;
 549
 550         if (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
 551             mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET) {
 552                 if (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) {
 553                         props->rss_caps.max_rwq_indirection_tables =
 554                                 props->max_qp;
 555                         props->rss_caps.max_rwq_indirection_table_size =
 556                                 dev->dev->caps.max_rss_tbl_sz;
 557                         props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
 558                         props->max_wq_type_rq = props->max_qp;
 559                 }
 560
 561                 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
 562                         props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS;
 563         }
 564
 565         props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
 566         props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
 567
 568         if (!mlx4_is_slave(dev->dev))
 569                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 570
 571         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 572                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 573                 if (!err && !mlx4_is_slave(dev->dev)) {
 574                         resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET;
 575                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 576                 }
 577         }
 578
 579         if (uhw->outlen >= resp.response_length +
 580             sizeof(resp.max_inl_recv_sz)) {
 581                 resp.response_length += sizeof(resp.max_inl_recv_sz);
 582                 resp.max_inl_recv_sz  = dev->dev->caps.max_rq_sg *
 583                         sizeof(struct mlx4_wqe_data_seg);
 584         }
 585
 586         if (field_avail(typeof(resp), rss_caps, uhw->outlen)) {
 587                 if (props->rss_caps.supported_qpts) {
 588                         resp.rss_caps.rx_hash_function =
 589                                 MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
 590
 591                         resp.rss_caps.rx_hash_fields_mask =
 592                                 MLX4_IB_RX_HASH_SRC_IPV4 |
 593                                 MLX4_IB_RX_HASH_DST_IPV4 |
 594                                 MLX4_IB_RX_HASH_SRC_IPV6 |
 595                                 MLX4_IB_RX_HASH_DST_IPV6 |
 596                                 MLX4_IB_RX_HASH_SRC_PORT_TCP |
 597                                 MLX4_IB_RX_HASH_DST_PORT_TCP |
 598                                 MLX4_IB_RX_HASH_SRC_PORT_UDP |
 599                                 MLX4_IB_RX_HASH_DST_PORT_UDP;
 600
 601                         if (dev->dev->caps.tunnel_offload_mode ==
 602                             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
 603                                 resp.rss_caps.rx_hash_fields_mask |=
 604                                         MLX4_IB_RX_HASH_INNER;
 605                 }
 606                 resp.response_length = offsetof(typeof(resp), rss_caps) +
 607                                        sizeof(resp.rss_caps);
 608         }
 609
 610         if (field_avail(typeof(resp), tso_caps, uhw->outlen)) {
 611                 if (dev->dev->caps.max_gso_sz &&
 612                     ((mlx4_ib_port_link_layer(ibdev, 1) ==
 613                     IB_LINK_LAYER_ETHERNET) ||
 614                     (mlx4_ib_port_link_layer(ibdev, 2) ==
 615                     IB_LINK_LAYER_ETHERNET))) {
 616                         resp.tso_caps.max_tso = dev->dev->caps.max_gso_sz;
 617                         resp.tso_caps.supported_qpts |=
 618                                 1 << IB_QPT_RAW_PACKET;
 619                 }
 620                 resp.response_length = offsetof(typeof(resp), tso_caps) +
 621                                        sizeof(resp.tso_caps);
 622         }
 623
 624         if (uhw->outlen) {
 625                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 626                 if (err)
 627                         goto out;
 628         }
 629 out:
 630         kfree(in_mad);
 631         kfree(out_mad);
 632
 633         return err;
 634 }
 635
 636 static enum rdma_link_layer
 637 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 638 {
 639         struct mlx4_dev *dev = to_mdev(device)->dev;
 640
 641         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 642                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 643 }
 644
 645 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 646                               struct ib_port_attr *props, int netw_view)
 647 {
 648         struct ib_smp *in_mad  = NULL;
 649         struct ib_smp *out_mad = NULL;
 650         int ext_active_speed;
 651         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 652         int err = -ENOMEM;
 653
 654         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 655         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 656         if (!in_mad || !out_mad)
 657                 goto out;
 658
 659         init_query_mad(in_mad);
 660         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 661         in_mad->attr_mod = cpu_to_be32(port);
 662
 663         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 664                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 665
 666         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 667                                 in_mad, out_mad);
 668         if (err)
 669                 goto out;
 670
 671
 672         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 673         props->lmc              = out_mad->data[34] & 0x7;
 674         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 675         props->sm_sl            = out_mad->data[36] & 0xf;
 676         props->state            = out_mad->data[32] & 0xf;
 677         props->phys_state       = out_mad->data[33] >> 4;
 678         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 679         if (netw_view)
 680                 props->gid_tbl_len = out_mad->data[50];
 681         else
 682                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 683         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 684         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 685         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 686         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 687         props->active_width     = out_mad->data[31] & 0xf;
 688         props->active_speed     = out_mad->data[35] >> 4;
 689         props->max_mtu          = out_mad->data[41] & 0xf;
 690         props->active_mtu       = out_mad->data[36] >> 4;
 691         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 692         props->max_vl_num       = out_mad->data[37] >> 4;
 693         props->init_type_reply  = out_mad->data[41] >> 4;
 694
 695         /* Check if extended speeds (EDR/FDR/...) are supported */
 696         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 697                 ext_active_speed = out_mad->data[62] >> 4;
 698
 699                 switch (ext_active_speed) {
 700                 case 1:
 701                         props->active_speed = IB_SPEED_FDR;
 702                         break;
 703                 case 2:
 704                         props->active_speed = IB_SPEED_EDR;
 705                         break;
 706                 }
 707         }
 708
 709         /* If reported active speed is QDR, check if is FDR-10 */
 710         if (props->active_speed == IB_SPEED_QDR) {
 711                 init_query_mad(in_mad);
 712                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 713                 in_mad->attr_mod = cpu_to_be32(port);
 714
 715                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 716                                    NULL, NULL, in_mad, out_mad);
 717                 if (err)
 718                         goto out;
 719
 720                 /* Checking LinkSpeedActive for FDR-10 */
 721                 if (out_mad->data[15] & 0x1)
 722                         props->active_speed = IB_SPEED_FDR10;
 723         }
 724
 725         /* Avoid wrong speed value returned by FW if the IB link is down. */
 726         if (props->state == IB_PORT_DOWN)
 727                  props->active_speed = IB_SPEED_SDR;
 728
 729 out:
 730         kfree(in_mad);
 731         kfree(out_mad);
 732         return err;
 733 }
 734
 735 static u8 state_to_phys_state(enum ib_port_state state)
 736 {
 737         return state == IB_PORT_ACTIVE ? 5 : 3;
 738 }
 739
 740 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 741                                struct ib_port_attr *props)
 742 {
 743
 744         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 745         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 746         struct net_device *ndev;
 747         enum ib_mtu tmp;
 748         struct mlx4_cmd_mailbox *mailbox;
 749         int err = 0;
 750         int is_bonded = mlx4_is_bonded(mdev->dev);
 751
 752         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 753         if (IS_ERR(mailbox))
 754                 return PTR_ERR(mailbox);
 755
 756         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 757                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 758                            MLX4_CMD_WRAPPED);
 759         if (err)
 760                 goto out;
 761
 762         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ||
 763                                    (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 764                                            IB_WIDTH_4X : IB_WIDTH_1X;
 765         props->active_speed     =  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 766                                            IB_SPEED_FDR : IB_SPEED_QDR;
 767         props->port_cap_flags   = IB_PORT_CM_SUP;
 768         props->ip_gids = true;
 769         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 770         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 771         props->pkey_tbl_len     = 1;
 772         props->max_mtu          = IB_MTU_4096;
 773         props->max_vl_num       = 2;
 774         props->state            = IB_PORT_DOWN;
 775         props->phys_state       = state_to_phys_state(props->state);
 776         props->active_mtu       = IB_MTU_256;
 777         spin_lock_bh(&iboe->lock);
 778         ndev = iboe->netdevs[port - 1];
 779         if (ndev && is_bonded) {
 780                 rcu_read_lock(); /* required to get upper dev */
 781                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 782                 rcu_read_unlock();
 783         }
 784         if (!ndev)
 785                 goto out_unlock;
 786
 787         tmp = iboe_get_mtu(ndev->mtu);
 788         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 789
 790         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 791                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 792         props->phys_state       = state_to_phys_state(props->state);
 793 out_unlock:
 794         spin_unlock_bh(&iboe->lock);
 795 out:
 796         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 797         return err;
 798 }
 799
 800 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 801                          struct ib_port_attr *props, int netw_view)
 802 {
 803         int err;
 804
 805         /* props being zeroed by the caller, avoid zeroing it here */
 806
 807         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 808                 ib_link_query_port(ibdev, port, props, netw_view) :
 809                                 eth_link_query_port(ibdev, port, props);
 810
 811         return err;
 812 }
 813
 814 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 815                               struct ib_port_attr *props)
 816 {
 817         /* returns host view */
 818         return __mlx4_ib_query_port(ibdev, port, props, 0);
 819 }
 820
 821 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 822                         union ib_gid *gid, int netw_view)
 823 {
 824         struct ib_smp *in_mad  = NULL;
 825         struct ib_smp *out_mad = NULL;
 826         int err = -ENOMEM;
 827         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 828         int clear = 0;
 829         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 830
 831         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 832         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 833         if (!in_mad || !out_mad)
 834                 goto out;
 835
 836         init_query_mad(in_mad);
 837         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 838         in_mad->attr_mod = cpu_to_be32(port);
 839
 840         if (mlx4_is_mfunc(dev->dev) && netw_view)
 841                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 842
 843         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 844         if (err)
 845                 goto out;
 846
 847         memcpy(gid->raw, out_mad->data + 8, 8);
 848
 849         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 850                 if (index) {
 851                         /* For any index > 0, return the null guid */
 852                         err = 0;
 853                         clear = 1;
 854                         goto out;
 855                 }
 856         }
 857
 858         init_query_mad(in_mad);
 859         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 860         in_mad->attr_mod = cpu_to_be32(index / 8);
 861
 862         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 863                            NULL, NULL, in_mad, out_mad);
 864         if (err)
 865                 goto out;
 866
 867         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 868
 869 out:
 870         if (clear)
 871                 memset(gid->raw + 8, 0, 8);
 872         kfree(in_mad);
 873         kfree(out_mad);
 874         return err;
 875 }
 876
 877 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 878                              union ib_gid *gid)
 879 {
 880         if (rdma_protocol_ib(ibdev, port))
 881                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 882         return 0;
 883 }
 884
 885 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
 886 {
 887         union sl2vl_tbl_to_u64 sl2vl64;
 888         struct ib_smp *in_mad  = NULL;
 889         struct ib_smp *out_mad = NULL;
 890         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 891         int err = -ENOMEM;
 892         int jj;
 893
 894         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 895                 *sl2vl_tbl = 0;
 896                 return 0;
 897         }
 898
 899         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 900         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 901         if (!in_mad || !out_mad)
 902                 goto out;
 903
 904         init_query_mad(in_mad);
 905         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 906         in_mad->attr_mod = 0;
 907
 908         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 909                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 910
 911         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 912                            in_mad, out_mad);
 913         if (err)
 914                 goto out;
 915
 916         for (jj = 0; jj < 8; jj++)
 917                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 918         *sl2vl_tbl = sl2vl64.sl64;
 919
 920 out:
 921         kfree(in_mad);
 922         kfree(out_mad);
 923         return err;
 924 }
 925
 926 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 927 {
 928         u64 sl2vl;
 929         int i;
 930         int err;
 931
 932         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 933                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 934                         continue;
 935                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 936                 if (err) {
 937                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 938                                i, err);
 939                         sl2vl = 0;
 940                 }
 941                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 942         }
 943 }
 944
 945 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 946                          u16 *pkey, int netw_view)
 947 {
 948         struct ib_smp *in_mad  = NULL;
 949         struct ib_smp *out_mad = NULL;
 950         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 951         int err = -ENOMEM;
 952
 953         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 954         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 955         if (!in_mad || !out_mad)
 956                 goto out;
 957
 958         init_query_mad(in_mad);
 959         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 960         in_mad->attr_mod = cpu_to_be32(index / 32);
 961
 962         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 963                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 964
 965         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 966                            in_mad, out_mad);
 967         if (err)
 968                 goto out;
 969
 970         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 971
 972 out:
 973         kfree(in_mad);
 974         kfree(out_mad);
 975         return err;
 976 }
 977
 978 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 979 {
 980         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 981 }
 982
 983 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 984                                  struct ib_device_modify *props)
 985 {
 986         struct mlx4_cmd_mailbox *mailbox;
 987         unsigned long flags;
 988
 989         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 990                 return -EOPNOTSUPP;
 991
 992         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 993                 return 0;
 994
 995         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 996                 return -EOPNOTSUPP;
 997
 998         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 999         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1000         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
1001
1002         /*
1003          * If possible, pass node desc to FW, so it can generate
1004          * a 144 trap.  If cmd fails, just ignore.
1005          */
1006         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
1007         if (IS_ERR(mailbox))
1008                 return 0;
1009
1010         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1011         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
1012                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1013
1014         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
1015
1016         return 0;
1017 }
1018
1019 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
1020                             u32 cap_mask)
1021 {
1022         struct mlx4_cmd_mailbox *mailbox;
1023         int err;
1024
1025         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
1026         if (IS_ERR(mailbox))
1027                 return PTR_ERR(mailbox);
1028
1029         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1030                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
1031                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
1032         } else {
1033                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
1034                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
1035         }
1036
1037         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
1038                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1039                        MLX4_CMD_WRAPPED);
1040
1041         mlx4_free_cmd_mailbox(dev->dev, mailbox);
1042         return err;
1043 }
1044
1045 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1046                                struct ib_port_modify *props)
1047 {
1048         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1049         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1050         struct ib_port_attr attr;
1051         u32 cap_mask;
1052         int err;
1053
1054         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1055          * of whether port link layer is ETH or IB. For ETH ports, qkey
1056          * violations and port capabilities are not meaningful.
1057          */
1058         if (is_eth)
1059                 return 0;
1060
1061         mutex_lock(&mdev->cap_mask_mutex);
1062
1063         err = ib_query_port(ibdev, port, &attr);
1064         if (err)
1065                 goto out;
1066
1067         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1068                 ~props->clr_port_cap_mask;
1069
1070         err = mlx4_ib_SET_PORT(mdev, port,
1071                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1072                                cap_mask);
1073
1074 out:
1075         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1076         return err;
1077 }
1078
1079 static int mlx4_ib_alloc_ucontext(struct ib_ucontext *uctx,
1080                                   struct ib_udata *udata)
1081 {
1082         struct ib_device *ibdev = uctx->device;
1083         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1084         struct mlx4_ib_ucontext *context = to_mucontext(uctx);
1085         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1086         struct mlx4_ib_alloc_ucontext_resp resp;
1087         int err;
1088
1089         if (!dev->ib_active)
1090                 return -EAGAIN;
1091
1092         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1093                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1094                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1095                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1096         } else {
1097                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1098                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1099                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1100                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1101                 resp.cqe_size         = dev->dev->caps.cqe_size;
1102         }
1103
1104         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1105         if (err)
1106                 return err;
1107
1108         INIT_LIST_HEAD(&context->db_page_list);
1109         mutex_init(&context->db_page_mutex);
1110
1111         INIT_LIST_HEAD(&context->wqn_ranges_list);
1112         mutex_init(&context->wqn_ranges_mutex);
1113
1114         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1115                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1116         else
1117                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1118
1119         if (err) {
1120                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1121                 return -EFAULT;
1122         }
1123
1124         return err;
1125 }
1126
1127 static void mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1128 {
1129         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1130
1131         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1132 }
1133
1134 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1135 {
1136 }
1137
1138 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1139 {
1140         struct mlx4_ib_dev *dev = to_mdev(context->device);
1141
1142         switch (vma->vm_pgoff) {
1143         case 0:
1144                 return rdma_user_mmap_io(context, vma,
1145                                          to_mucontext(context)->uar.pfn,
1146                                          PAGE_SIZE,
1147                                          pgprot_noncached(vma->vm_page_prot));
1148
1149         case 1:
1150                 if (dev->dev->caps.bf_reg_size == 0)
1151                         return -EINVAL;
1152                 return rdma_user_mmap_io(
1153                         context, vma,
1154                         to_mucontext(context)->uar.pfn +
1155                                 dev->dev->caps.num_uars,
1156                         PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot));
1157
1158         case 3: {
1159                 struct mlx4_clock_params params;
1160                 int ret;
1161
1162                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1163                 if (ret)
1164                         return ret;
1165
1166                 return rdma_user_mmap_io(
1167                         context, vma,
1168                         (pci_resource_start(dev->dev->persist->pdev,
1169                                             params.bar) +
1170                          params.offset) >>
1171                                 PAGE_SHIFT,
1172                         PAGE_SIZE, pgprot_noncached(vma->vm_page_prot));
1173         }
1174
1175         default:
1176                 return -EINVAL;
1177         }
1178 }
1179
1180 static int mlx4_ib_alloc_pd(struct ib_pd *ibpd, struct ib_ucontext *context,
1181                             struct ib_udata *udata)
1182 {
1183         struct mlx4_ib_pd *pd = to_mpd(ibpd);
1184         struct ib_device *ibdev = ibpd->device;
1185         int err;
1186
1187         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1188         if (err)
1189                 return err;
1190
1191         if (context && ib_copy_to_udata(udata, &pd->pdn, sizeof(__u32))) {
1192                 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1193                 return -EFAULT;
1194         }
1195         return 0;
1196 }
1197
1198 static void mlx4_ib_dealloc_pd(struct ib_pd *pd)
1199 {
1200         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1201 }
1202
1203 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1204                                           struct ib_ucontext *context,
1205                                           struct ib_udata *udata)
1206 {
1207         struct mlx4_ib_xrcd *xrcd;
1208         struct ib_cq_init_attr cq_attr = {};
1209         int err;
1210
1211         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1212                 return ERR_PTR(-ENOSYS);
1213
1214         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1215         if (!xrcd)
1216                 return ERR_PTR(-ENOMEM);
1217
1218         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1219         if (err)
1220                 goto err1;
1221
1222         xrcd->pd = ib_alloc_pd(ibdev, 0);
1223         if (IS_ERR(xrcd->pd)) {
1224                 err = PTR_ERR(xrcd->pd);
1225                 goto err2;
1226         }
1227
1228         cq_attr.cqe = 1;
1229         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1230         if (IS_ERR(xrcd->cq)) {
1231                 err = PTR_ERR(xrcd->cq);
1232                 goto err3;
1233         }
1234
1235         return &xrcd->ibxrcd;
1236
1237 err3:
1238         ib_dealloc_pd(xrcd->pd);
1239 err2:
1240         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1241 err1:
1242         kfree(xrcd);
1243         return ERR_PTR(err);
1244 }
1245
1246 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1247 {
1248         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1249         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1250         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1251         kfree(xrcd);
1252
1253         return 0;
1254 }
1255
1256 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1257 {
1258         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1259         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1260         struct mlx4_ib_gid_entry *ge;
1261
1262         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1263         if (!ge)
1264                 return -ENOMEM;
1265
1266         ge->gid = *gid;
1267         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1268                 ge->port = mqp->port;
1269                 ge->added = 1;
1270         }
1271
1272         mutex_lock(&mqp->mutex);
1273         list_add_tail(&ge->list, &mqp->gid_list);
1274         mutex_unlock(&mqp->mutex);
1275
1276         return 0;
1277 }
1278
1279 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1280                                           struct mlx4_ib_counters *ctr_table)
1281 {
1282         struct counter_index *counter, *tmp_count;
1283
1284         mutex_lock(&ctr_table->mutex);
1285         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1286                                  list) {
1287                 if (counter->allocated)
1288                         mlx4_counter_free(ibdev->dev, counter->index);
1289                 list_del(&counter->list);
1290                 kfree(counter);
1291         }
1292         mutex_unlock(&ctr_table->mutex);
1293 }
1294
1295 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1296                    union ib_gid *gid)
1297 {
1298         struct net_device *ndev;
1299         int ret = 0;
1300
1301         if (!mqp->port)
1302                 return 0;
1303
1304         spin_lock_bh(&mdev->iboe.lock);
1305         ndev = mdev->iboe.netdevs[mqp->port - 1];
1306         if (ndev)
1307                 dev_hold(ndev);
1308         spin_unlock_bh(&mdev->iboe.lock);
1309
1310         if (ndev) {
1311                 ret = 1;
1312                 dev_put(ndev);
1313         }
1314
1315         return ret;
1316 }
1317
1318 struct mlx4_ib_steering {
1319         struct list_head list;
1320         struct mlx4_flow_reg_id reg_id;
1321         union ib_gid gid;
1322 };
1323
1324 #define LAST_ETH_FIELD vlan_tag
1325 #define LAST_IB_FIELD sl
1326 #define LAST_IPV4_FIELD dst_ip
1327 #define LAST_TCP_UDP_FIELD src_port
1328
1329 /* Field is the last supported field */
1330 #define FIELDS_NOT_SUPPORTED(filter, field)\
1331         memchr_inv((void *)&filter.field  +\
1332                    sizeof(filter.field), 0,\
1333                    sizeof(filter) -\
1334                    offsetof(typeof(filter), field) -\
1335                    sizeof(filter.field))
1336
1337 static int parse_flow_attr(struct mlx4_dev *dev,
1338                            u32 qp_num,
1339                            union ib_flow_spec *ib_spec,
1340                            struct _rule_hw *mlx4_spec)
1341 {
1342         enum mlx4_net_trans_rule_id type;
1343
1344         switch (ib_spec->type) {
1345         case IB_FLOW_SPEC_ETH:
1346                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1347                         return -ENOTSUPP;
1348
1349                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1350                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1351                        ETH_ALEN);
1352                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1353                        ETH_ALEN);
1354                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1355                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1356                 break;
1357         case IB_FLOW_SPEC_IB:
1358                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1359                         return -ENOTSUPP;
1360
1361                 type = MLX4_NET_TRANS_RULE_ID_IB;
1362                 mlx4_spec->ib.l3_qpn =
1363                         cpu_to_be32(qp_num);
1364                 mlx4_spec->ib.qpn_mask =
1365                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1366                 break;
1367
1368
1369         case IB_FLOW_SPEC_IPV4:
1370                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1371                         return -ENOTSUPP;
1372
1373                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1374                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1375                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1376                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1377                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1378                 break;
1379
1380         case IB_FLOW_SPEC_TCP:
1381         case IB_FLOW_SPEC_UDP:
1382                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1383                         return -ENOTSUPP;
1384
1385                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1386                                         MLX4_NET_TRANS_RULE_ID_TCP :
1387                                         MLX4_NET_TRANS_RULE_ID_UDP;
1388                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1389                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1390                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1391                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1392                 break;
1393
1394         default:
1395                 return -EINVAL;
1396         }
1397         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1398             mlx4_hw_rule_sz(dev, type) < 0)
1399                 return -EINVAL;
1400         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1401         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1402         return mlx4_hw_rule_sz(dev, type);
1403 }
1404
1405 struct default_rules {
1406         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1407         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1408         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1409         __u8  link_layer;
1410 };
1411 static const struct default_rules default_table[] = {
1412         {
1413                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1414                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1415                 .rules_create_list = {IB_FLOW_SPEC_IB},
1416                 .link_layer = IB_LINK_LAYER_INFINIBAND
1417         }
1418 };
1419
1420 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1421                                          struct ib_flow_attr *flow_attr)
1422 {
1423         int i, j, k;
1424         void *ib_flow;
1425         const struct default_rules *pdefault_rules = default_table;
1426         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1427
1428         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1429                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1430                 memset(&field_types, 0, sizeof(field_types));
1431
1432                 if (link_layer != pdefault_rules->link_layer)
1433                         continue;
1434
1435                 ib_flow = flow_attr + 1;
1436                 /* we assume the specs are sorted */
1437                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1438                      j < flow_attr->num_of_specs; k++) {
1439                         union ib_flow_spec *current_flow =
1440                                 (union ib_flow_spec *)ib_flow;
1441
1442                         /* same layer but different type */
1443                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1444                              (pdefault_rules->mandatory_fields[k] &
1445                               IB_FLOW_SPEC_LAYER_MASK)) &&
1446                             (current_flow->type !=
1447                              pdefault_rules->mandatory_fields[k]))
1448                                 goto out;
1449
1450                         /* same layer, try match next one */
1451                         if (current_flow->type ==
1452                             pdefault_rules->mandatory_fields[k]) {
1453                                 j++;
1454                                 ib_flow +=
1455                                         ((union ib_flow_spec *)ib_flow)->size;
1456                         }
1457                 }
1458
1459                 ib_flow = flow_attr + 1;
1460                 for (j = 0; j < flow_attr->num_of_specs;
1461                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1462                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1463                                 /* same layer and same type */
1464                                 if (((union ib_flow_spec *)ib_flow)->type ==
1465                                     pdefault_rules->mandatory_not_fields[k])
1466                                         goto out;
1467
1468                 return i;
1469         }
1470 out:
1471         return -1;
1472 }
1473
1474 static int __mlx4_ib_create_default_rules(
1475                 struct mlx4_ib_dev *mdev,
1476                 struct ib_qp *qp,
1477                 const struct default_rules *pdefault_rules,
1478                 struct _rule_hw *mlx4_spec) {
1479         int size = 0;
1480         int i;
1481
1482         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1483                 int ret;
1484                 union ib_flow_spec ib_spec;
1485                 switch (pdefault_rules->rules_create_list[i]) {
1486                 case 0:
1487                         /* no rule */
1488                         continue;
1489                 case IB_FLOW_SPEC_IB:
1490                         ib_spec.type = IB_FLOW_SPEC_IB;
1491                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1492
1493                         break;
1494                 default:
1495                         /* invalid rule */
1496                         return -EINVAL;
1497                 }
1498                 /* We must put empty rule, qpn is being ignored */
1499                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1500                                       mlx4_spec);
1501                 if (ret < 0) {
1502                         pr_info("invalid parsing\n");
1503                         return -EINVAL;
1504                 }
1505
1506                 mlx4_spec = (void *)mlx4_spec + ret;
1507                 size += ret;
1508         }
1509         return size;
1510 }
1511
1512 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1513                           int domain,
1514                           enum mlx4_net_trans_promisc_mode flow_type,
1515                           u64 *reg_id)
1516 {
1517         int ret, i;
1518         int size = 0;
1519         void *ib_flow;
1520         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1521         struct mlx4_cmd_mailbox *mailbox;
1522         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1523         int default_flow;
1524
1525         static const u16 __mlx4_domain[] = {
1526                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1527                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1528                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1529                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1530         };
1531
1532         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1533                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1534                 return -EINVAL;
1535         }
1536
1537         if (domain >= IB_FLOW_DOMAIN_NUM) {
1538                 pr_err("Invalid domain value %d\n", domain);
1539                 return -EINVAL;
1540         }
1541
1542         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1543                 return -EINVAL;
1544
1545         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1546         if (IS_ERR(mailbox))
1547                 return PTR_ERR(mailbox);
1548         ctrl = mailbox->buf;
1549
1550         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1551                                  flow_attr->priority);
1552         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1553         ctrl->port = flow_attr->port;
1554         ctrl->qpn = cpu_to_be32(qp->qp_num);
1555
1556         ib_flow = flow_attr + 1;
1557         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1558         /* Add default flows */
1559         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1560         if (default_flow >= 0) {
1561                 ret = __mlx4_ib_create_default_rules(
1562                                 mdev, qp, default_table + default_flow,
1563                                 mailbox->buf + size);
1564                 if (ret < 0) {
1565                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1566                         return -EINVAL;
1567                 }
1568                 size += ret;
1569         }
1570         for (i = 0; i < flow_attr->num_of_specs; i++) {
1571                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1572                                       mailbox->buf + size);
1573                 if (ret < 0) {
1574                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1575                         return -EINVAL;
1576                 }
1577                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1578                 size += ret;
1579         }
1580
1581         if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1582             flow_attr->num_of_specs == 1) {
1583                 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1584                 enum ib_flow_spec_type header_spec =
1585                         ((union ib_flow_spec *)(flow_attr + 1))->type;
1586
1587                 if (header_spec == IB_FLOW_SPEC_ETH)
1588                         mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1589         }
1590
1591         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1592                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1593                            MLX4_CMD_NATIVE);
1594         if (ret == -ENOMEM)
1595                 pr_err("mcg table is full. Fail to register network rule.\n");
1596         else if (ret == -ENXIO)
1597                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1598         else if (ret)
1599                 pr_err("Invalid argument. Fail to register network rule.\n");
1600
1601         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1602         return ret;
1603 }
1604
1605 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1606 {
1607         int err;
1608         err = mlx4_cmd(dev, reg_id, 0, 0,
1609                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1610                        MLX4_CMD_NATIVE);
1611         if (err)
1612                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1613                        reg_id);
1614         return err;
1615 }
1616
1617 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1618                                     u64 *reg_id)
1619 {
1620         void *ib_flow;
1621         union ib_flow_spec *ib_spec;
1622         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1623         int err = 0;
1624
1625         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1626             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1627                 return 0; /* do nothing */
1628
1629         ib_flow = flow_attr + 1;
1630         ib_spec = (union ib_flow_spec *)ib_flow;
1631
1632         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1633                 return 0; /* do nothing */
1634
1635         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1636                                     flow_attr->port, qp->qp_num,
1637                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1638                                     reg_id);
1639         return err;
1640 }
1641
1642 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1643                                       struct ib_flow_attr *flow_attr,
1644                                       enum mlx4_net_trans_promisc_mode *type)
1645 {
1646         int err = 0;
1647
1648         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1649             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1650             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1651                 return -EOPNOTSUPP;
1652         }
1653
1654         if (flow_attr->num_of_specs == 0) {
1655                 type[0] = MLX4_FS_MC_SNIFFER;
1656                 type[1] = MLX4_FS_UC_SNIFFER;
1657         } else {
1658                 union ib_flow_spec *ib_spec;
1659
1660                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1661                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1662                         return -EINVAL;
1663
1664                 /* if all is zero than MC and UC */
1665                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1666                         type[0] = MLX4_FS_MC_SNIFFER;
1667                         type[1] = MLX4_FS_UC_SNIFFER;
1668                 } else {
1669                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1670                                             ib_spec->eth.mask.dst_mac[1],
1671                                             ib_spec->eth.mask.dst_mac[2],
1672                                             ib_spec->eth.mask.dst_mac[3],
1673                                             ib_spec->eth.mask.dst_mac[4],
1674                                             ib_spec->eth.mask.dst_mac[5]};
1675
1676                         /* Above xor was only on MC bit, non empty mask is valid
1677                          * only if this bit is set and rest are zero.
1678                          */
1679                         if (!is_zero_ether_addr(&mac[0]))
1680                                 return -EINVAL;
1681
1682                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1683                                 type[0] = MLX4_FS_MC_SNIFFER;
1684                         else
1685                                 type[0] = MLX4_FS_UC_SNIFFER;
1686                 }
1687         }
1688
1689         return err;
1690 }
1691
1692 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1693                                     struct ib_flow_attr *flow_attr,
1694                                     int domain, struct ib_udata *udata)
1695 {
1696         int err = 0, i = 0, j = 0;
1697         struct mlx4_ib_flow *mflow;
1698         enum mlx4_net_trans_promisc_mode type[2];
1699         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1700         int is_bonded = mlx4_is_bonded(dev);
1701
1702         if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1703                 return ERR_PTR(-EINVAL);
1704
1705         if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)
1706                 return ERR_PTR(-EOPNOTSUPP);
1707
1708         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1709             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1710                 return ERR_PTR(-EOPNOTSUPP);
1711
1712         if (udata &&
1713             udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen))
1714                 return ERR_PTR(-EOPNOTSUPP);
1715
1716         memset(type, 0, sizeof(type));
1717
1718         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1719         if (!mflow) {
1720                 err = -ENOMEM;
1721                 goto err_free;
1722         }
1723
1724         switch (flow_attr->type) {
1725         case IB_FLOW_ATTR_NORMAL:
1726                 /* If dont trap flag (continue match) is set, under specific
1727                  * condition traffic be replicated to given qp,
1728                  * without stealing it
1729                  */
1730                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1731                         err = mlx4_ib_add_dont_trap_rule(dev,
1732                                                          flow_attr,
1733                                                          type);
1734                         if (err)
1735                                 goto err_free;
1736                 } else {
1737                         type[0] = MLX4_FS_REGULAR;
1738                 }
1739                 break;
1740
1741         case IB_FLOW_ATTR_ALL_DEFAULT:
1742                 type[0] = MLX4_FS_ALL_DEFAULT;
1743                 break;
1744
1745         case IB_FLOW_ATTR_MC_DEFAULT:
1746                 type[0] = MLX4_FS_MC_DEFAULT;
1747                 break;
1748
1749         case IB_FLOW_ATTR_SNIFFER:
1750                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1751                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1752                 break;
1753
1754         default:
1755                 err = -EINVAL;
1756                 goto err_free;
1757         }
1758
1759         while (i < ARRAY_SIZE(type) && type[i]) {
1760                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1761                                             &mflow->reg_id[i].id);
1762                 if (err)
1763                         goto err_create_flow;
1764                 if (is_bonded) {
1765                         /* Application always sees one port so the mirror rule
1766                          * must be on port #2
1767                          */
1768                         flow_attr->port = 2;
1769                         err = __mlx4_ib_create_flow(qp, flow_attr,
1770                                                     domain, type[j],
1771                                                     &mflow->reg_id[j].mirror);
1772                         flow_attr->port = 1;
1773                         if (err)
1774                                 goto err_create_flow;
1775                         j++;
1776                 }
1777
1778                 i++;
1779         }
1780
1781         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1782                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1783                                                &mflow->reg_id[i].id);
1784                 if (err)
1785                         goto err_create_flow;
1786
1787                 if (is_bonded) {
1788                         flow_attr->port = 2;
1789                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1790                                                        &mflow->reg_id[j].mirror);
1791                         flow_attr->port = 1;
1792                         if (err)
1793                                 goto err_create_flow;
1794                         j++;
1795                 }
1796                 /* function to create mirror rule */
1797                 i++;
1798         }
1799
1800         return &mflow->ibflow;
1801
1802 err_create_flow:
1803         while (i) {
1804                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1805                                              mflow->reg_id[i].id);
1806                 i--;
1807         }
1808
1809         while (j) {
1810                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1811                                              mflow->reg_id[j].mirror);
1812                 j--;
1813         }
1814 err_free:
1815         kfree(mflow);
1816         return ERR_PTR(err);
1817 }
1818
1819 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1820 {
1821         int err, ret = 0;
1822         int i = 0;
1823         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1824         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1825
1826         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1827                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1828                 if (err)
1829                         ret = err;
1830                 if (mflow->reg_id[i].mirror) {
1831                         err = __mlx4_ib_destroy_flow(mdev->dev,
1832                                                      mflow->reg_id[i].mirror);
1833                         if (err)
1834                                 ret = err;
1835                 }
1836                 i++;
1837         }
1838
1839         kfree(mflow);
1840         return ret;
1841 }
1842
1843 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1844 {
1845         int err;
1846         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1847         struct mlx4_dev *dev = mdev->dev;
1848         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1849         struct mlx4_ib_steering *ib_steering = NULL;
1850         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1851         struct mlx4_flow_reg_id reg_id;
1852
1853         if (mdev->dev->caps.steering_mode ==
1854             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1855                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1856                 if (!ib_steering)
1857                         return -ENOMEM;
1858         }
1859
1860         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1861                                     !!(mqp->flags &
1862                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1863                                     prot, &reg_id.id);
1864         if (err) {
1865                 pr_err("multicast attach op failed, err %d\n", err);
1866                 goto err_malloc;
1867         }
1868
1869         reg_id.mirror = 0;
1870         if (mlx4_is_bonded(dev)) {
1871                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1872                                             (mqp->port == 1) ? 2 : 1,
1873                                             !!(mqp->flags &
1874                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1875                                             prot, &reg_id.mirror);
1876                 if (err)
1877                         goto err_add;
1878         }
1879
1880         err = add_gid_entry(ibqp, gid);
1881         if (err)
1882                 goto err_add;
1883
1884         if (ib_steering) {
1885                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1886                 ib_steering->reg_id = reg_id;
1887                 mutex_lock(&mqp->mutex);
1888                 list_add(&ib_steering->list, &mqp->steering_rules);
1889                 mutex_unlock(&mqp->mutex);
1890         }
1891         return 0;
1892
1893 err_add:
1894         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1895                               prot, reg_id.id);
1896         if (reg_id.mirror)
1897                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1898                                       prot, reg_id.mirror);
1899 err_malloc:
1900         kfree(ib_steering);
1901
1902         return err;
1903 }
1904
1905 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1906 {
1907         struct mlx4_ib_gid_entry *ge;
1908         struct mlx4_ib_gid_entry *tmp;
1909         struct mlx4_ib_gid_entry *ret = NULL;
1910
1911         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1912                 if (!memcmp(raw, ge->gid.raw, 16)) {
1913                         ret = ge;
1914                         break;
1915                 }
1916         }
1917
1918         return ret;
1919 }
1920
1921 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1922 {
1923         int err;
1924         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1925         struct mlx4_dev *dev = mdev->dev;
1926         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1927         struct net_device *ndev;
1928         struct mlx4_ib_gid_entry *ge;
1929         struct mlx4_flow_reg_id reg_id = {0, 0};
1930         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1931
1932         if (mdev->dev->caps.steering_mode ==
1933             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1934                 struct mlx4_ib_steering *ib_steering;
1935
1936                 mutex_lock(&mqp->mutex);
1937                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1938                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1939                                 list_del(&ib_steering->list);
1940                                 break;
1941                         }
1942                 }
1943                 mutex_unlock(&mqp->mutex);
1944                 if (&ib_steering->list == &mqp->steering_rules) {
1945                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1946                         return -EINVAL;
1947                 }
1948                 reg_id = ib_steering->reg_id;
1949                 kfree(ib_steering);
1950         }
1951
1952         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1953                                     prot, reg_id.id);
1954         if (err)
1955                 return err;
1956
1957         if (mlx4_is_bonded(dev)) {
1958                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1959                                             prot, reg_id.mirror);
1960                 if (err)
1961                         return err;
1962         }
1963
1964         mutex_lock(&mqp->mutex);
1965         ge = find_gid_entry(mqp, gid->raw);
1966         if (ge) {
1967                 spin_lock_bh(&mdev->iboe.lock);
1968                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1969                 if (ndev)
1970                         dev_hold(ndev);
1971                 spin_unlock_bh(&mdev->iboe.lock);
1972                 if (ndev)
1973                         dev_put(ndev);
1974                 list_del(&ge->list);
1975                 kfree(ge);
1976         } else
1977                 pr_warn("could not find mgid entry\n");
1978
1979         mutex_unlock(&mqp->mutex);
1980
1981         return 0;
1982 }
1983
1984 static int init_node_data(struct mlx4_ib_dev *dev)
1985 {
1986         struct ib_smp *in_mad  = NULL;
1987         struct ib_smp *out_mad = NULL;
1988         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1989         int err = -ENOMEM;
1990
1991         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1992         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1993         if (!in_mad || !out_mad)
1994                 goto out;
1995
1996         init_query_mad(in_mad);
1997         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1998         if (mlx4_is_master(dev->dev))
1999                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2000
2001         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2002         if (err)
2003                 goto out;
2004
2005         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2006
2007         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2008
2009         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2010         if (err)
2011                 goto out;
2012
2013         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2014         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2015
2016 out:
2017         kfree(in_mad);
2018         kfree(out_mad);
2019         return err;
2020 }
2021
2022 static ssize_t hca_type_show(struct device *device,
2023                              struct device_attribute *attr, char *buf)
2024 {
2025         struct mlx4_ib_dev *dev =
2026                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2027         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2028 }
2029 static DEVICE_ATTR_RO(hca_type);
2030
2031 static ssize_t hw_rev_show(struct device *device,
2032                            struct device_attribute *attr, char *buf)
2033 {
2034         struct mlx4_ib_dev *dev =
2035                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2036         return sprintf(buf, "%x\n", dev->dev->rev_id);
2037 }
2038 static DEVICE_ATTR_RO(hw_rev);
2039
2040 static ssize_t board_id_show(struct device *device,
2041                              struct device_attribute *attr, char *buf)
2042 {
2043         struct mlx4_ib_dev *dev =
2044                 rdma_device_to_drv_device(device, struct mlx4_ib_dev, ib_dev);
2045
2046         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2047                        dev->dev->board_id);
2048 }
2049 static DEVICE_ATTR_RO(board_id);
2050
2051 static struct attribute *mlx4_class_attributes[] = {
2052         &dev_attr_hw_rev.attr,
2053         &dev_attr_hca_type.attr,
2054         &dev_attr_board_id.attr,
2055         NULL
2056 };
2057
2058 static const struct attribute_group mlx4_attr_group = {
2059         .attrs = mlx4_class_attributes,
2060 };
2061
2062 struct diag_counter {
2063         const char *name;
2064         u32 offset;
2065 };
2066
2067 #define DIAG_COUNTER(_name, _offset)                    \
2068         { .name = #_name, .offset = _offset }
2069
2070 static const struct diag_counter diag_basic[] = {
2071         DIAG_COUNTER(rq_num_lle, 0x00),
2072         DIAG_COUNTER(sq_num_lle, 0x04),
2073         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2074         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2075         DIAG_COUNTER(rq_num_lpe, 0x18),
2076         DIAG_COUNTER(sq_num_lpe, 0x1C),
2077         DIAG_COUNTER(rq_num_wrfe, 0x20),
2078         DIAG_COUNTER(sq_num_wrfe, 0x24),
2079         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2080         DIAG_COUNTER(sq_num_bre, 0x34),
2081         DIAG_COUNTER(sq_num_rire, 0x44),
2082         DIAG_COUNTER(rq_num_rire, 0x48),
2083         DIAG_COUNTER(sq_num_rae, 0x4C),
2084         DIAG_COUNTER(rq_num_rae, 0x50),
2085         DIAG_COUNTER(sq_num_roe, 0x54),
2086         DIAG_COUNTER(sq_num_tree, 0x5C),
2087         DIAG_COUNTER(sq_num_rree, 0x64),
2088         DIAG_COUNTER(rq_num_rnr, 0x68),
2089         DIAG_COUNTER(sq_num_rnr, 0x6C),
2090         DIAG_COUNTER(rq_num_oos, 0x100),
2091         DIAG_COUNTER(sq_num_oos, 0x104),
2092 };
2093
2094 static const struct diag_counter diag_ext[] = {
2095         DIAG_COUNTER(rq_num_dup, 0x130),
2096         DIAG_COUNTER(sq_num_to, 0x134),
2097 };
2098
2099 static const struct diag_counter diag_device_only[] = {
2100         DIAG_COUNTER(num_cqovf, 0x1A0),
2101         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2102 };
2103
2104 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2105                                                     u8 port_num)
2106 {
2107         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2108         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2109
2110         if (!diag[!!port_num].name)
2111                 return NULL;
2112
2113         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2114                                           diag[!!port_num].num_counters,
2115                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2116 }
2117
2118 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2119                                 struct rdma_hw_stats *stats,
2120                                 u8 port, int index)
2121 {
2122         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2123         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2124         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2125                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2126         int ret;
2127         int i;
2128
2129         ret = mlx4_query_diag_counters(dev->dev,
2130                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2131                                        diag[!!port].offset, hw_value,
2132                                        diag[!!port].num_counters, port);
2133
2134         if (ret)
2135                 return ret;
2136
2137         for (i = 0; i < diag[!!port].num_counters; i++)
2138                 stats->value[i] = hw_value[i];
2139
2140         return diag[!!port].num_counters;
2141 }
2142
2143 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2144                                          const char ***name,
2145                                          u32 **offset,
2146                                          u32 *num,
2147                                          bool port)
2148 {
2149         u32 num_counters;
2150
2151         num_counters = ARRAY_SIZE(diag_basic);
2152
2153         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2154                 num_counters += ARRAY_SIZE(diag_ext);
2155
2156         if (!port)
2157                 num_counters += ARRAY_SIZE(diag_device_only);
2158
2159         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2160         if (!*name)
2161                 return -ENOMEM;
2162
2163         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2164         if (!*offset)
2165                 goto err_name;
2166
2167         *num = num_counters;
2168
2169         return 0;
2170
2171 err_name:
2172         kfree(*name);
2173         return -ENOMEM;
2174 }
2175
2176 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2177                                        const char **name,
2178                                        u32 *offset,
2179                                        bool port)
2180 {
2181         int i;
2182         int j;
2183
2184         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2185                 name[i] = diag_basic[i].name;
2186                 offset[i] = diag_basic[i].offset;
2187         }
2188
2189         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2190                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2191                         name[j] = diag_ext[i].name;
2192                         offset[j] = diag_ext[i].offset;
2193                 }
2194         }
2195
2196         if (!port) {
2197                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2198                         name[j] = diag_device_only[i].name;
2199                         offset[j] = diag_device_only[i].offset;
2200                 }
2201         }
2202 }
2203
2204 static const struct ib_device_ops mlx4_ib_hw_stats_ops = {
2205         .alloc_hw_stats = mlx4_ib_alloc_hw_stats,
2206         .get_hw_stats = mlx4_ib_get_hw_stats,
2207 };
2208
2209 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2210 {
2211         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2212         int i;
2213         int ret;
2214         bool per_port = !!(ibdev->dev->caps.flags2 &
2215                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2216
2217         if (mlx4_is_slave(ibdev->dev))
2218                 return 0;
2219
2220         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2221                 /* i == 1 means we are building port counters */
2222                 if (i && !per_port)
2223                         continue;
2224
2225                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2226                                                     &diag[i].offset,
2227                                                     &diag[i].num_counters, i);
2228                 if (ret)
2229                         goto err_alloc;
2230
2231                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2232                                            diag[i].offset, i);
2233         }
2234
2235         ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_hw_stats_ops);
2236
2237         return 0;
2238
2239 err_alloc:
2240         if (i) {
2241                 kfree(diag[i - 1].name);
2242                 kfree(diag[i - 1].offset);
2243         }
2244
2245         return ret;
2246 }
2247
2248 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2249 {
2250         int i;
2251
2252         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2253                 kfree(ibdev->diag_counters[i].offset);
2254                 kfree(ibdev->diag_counters[i].name);
2255         }
2256 }
2257
2258 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2259 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2260                                struct net_device *dev,
2261                                int port)
2262 {
2263         u64 new_smac = 0;
2264         u64 release_mac = MLX4_IB_INVALID_MAC;
2265         struct mlx4_ib_qp *qp;
2266
2267         read_lock(&dev_base_lock);
2268         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2269         read_unlock(&dev_base_lock);
2270
2271         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2272
2273         /* no need for update QP1 and mac registration in non-SRIOV */
2274         if (!mlx4_is_mfunc(ibdev->dev))
2275                 return;
2276
2277         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2278         qp = ibdev->qp1_proxy[port - 1];
2279         if (qp) {
2280                 int new_smac_index;
2281                 u64 old_smac;
2282                 struct mlx4_update_qp_params update_params;
2283
2284                 mutex_lock(&qp->mutex);
2285                 old_smac = qp->pri.smac;
2286                 if (new_smac == old_smac)
2287                         goto unlock;
2288
2289                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2290
2291                 if (new_smac_index < 0)
2292                         goto unlock;
2293
2294                 update_params.smac_index = new_smac_index;
2295                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2296                                    &update_params)) {
2297                         release_mac = new_smac;
2298                         goto unlock;
2299                 }
2300                 /* if old port was zero, no mac was yet registered for this QP */
2301                 if (qp->pri.smac_port)
2302                         release_mac = old_smac;
2303                 qp->pri.smac = new_smac;
2304                 qp->pri.smac_port = port;
2305                 qp->pri.smac_index = new_smac_index;
2306         }
2307
2308 unlock:
2309         if (release_mac != MLX4_IB_INVALID_MAC)
2310                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2311         if (qp)
2312                 mutex_unlock(&qp->mutex);
2313         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2314 }
2315
2316 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2317                                  struct net_device *dev,
2318                                  unsigned long event)
2319
2320 {
2321         struct mlx4_ib_iboe *iboe;
2322         int update_qps_port = -1;
2323         int port;
2324
2325         ASSERT_RTNL();
2326
2327         iboe = &ibdev->iboe;
2328
2329         spin_lock_bh(&iboe->lock);
2330         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2331
2332                 iboe->netdevs[port - 1] =
2333                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2334
2335                 if (dev == iboe->netdevs[port - 1] &&
2336                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2337                      event == NETDEV_UP || event == NETDEV_CHANGE))
2338                         update_qps_port = port;
2339
2340                 if (dev == iboe->netdevs[port - 1] &&
2341                     (event == NETDEV_UP || event == NETDEV_DOWN)) {
2342                         enum ib_port_state port_state;
2343                         struct ib_event ibev = { };
2344
2345                         if (ib_get_cached_port_state(&ibdev->ib_dev, port,
2346                                                      &port_state))
2347                                 continue;
2348
2349                         if (event == NETDEV_UP &&
2350                             (port_state != IB_PORT_ACTIVE ||
2351                              iboe->last_port_state[port - 1] != IB_PORT_DOWN))
2352                                 continue;
2353                         if (event == NETDEV_DOWN &&
2354                             (port_state != IB_PORT_DOWN ||
2355                              iboe->last_port_state[port - 1] != IB_PORT_ACTIVE))
2356                                 continue;
2357                         iboe->last_port_state[port - 1] = port_state;
2358
2359                         ibev.device = &ibdev->ib_dev;
2360                         ibev.element.port_num = port;
2361                         ibev.event = event == NETDEV_UP ? IB_EVENT_PORT_ACTIVE :
2362                                                           IB_EVENT_PORT_ERR;
2363                         ib_dispatch_event(&ibev);
2364                 }
2365
2366         }
2367         spin_unlock_bh(&iboe->lock);
2368
2369         if (update_qps_port > 0)
2370                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2371 }
2372
2373 static int mlx4_ib_netdev_event(struct notifier_block *this,
2374                                 unsigned long event, void *ptr)
2375 {
2376         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2377         struct mlx4_ib_dev *ibdev;
2378
2379         if (!net_eq(dev_net(dev), &init_net))
2380                 return NOTIFY_DONE;
2381
2382         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2383         mlx4_ib_scan_netdevs(ibdev, dev, event);
2384
2385         return NOTIFY_DONE;
2386 }
2387
2388 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2389 {
2390         int port;
2391         int slave;
2392         int i;
2393
2394         if (mlx4_is_master(ibdev->dev)) {
2395                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2396                      ++slave) {
2397                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2398                                 for (i = 0;
2399                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2400                                      ++i) {
2401                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2402                                         /* master has the identity virt2phys pkey mapping */
2403                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2404                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2405                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2406                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2407                                 }
2408                         }
2409                 }
2410                 /* initialize pkey cache */
2411                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2412                         for (i = 0;
2413                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2414                              ++i)
2415                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2416                                         (i) ? 0 : 0xFFFF;
2417                 }
2418         }
2419 }
2420
2421 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2422 {
2423         int i, j, eq = 0, total_eqs = 0;
2424
2425         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2426                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2427         if (!ibdev->eq_table)
2428                 return;
2429
2430         for (i = 1; i <= dev->caps.num_ports; i++) {
2431                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2432                      j++, total_eqs++) {
2433                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2434                                 continue;
2435                         ibdev->eq_table[eq] = total_eqs;
2436                         if (!mlx4_assign_eq(dev, i,
2437                                             &ibdev->eq_table[eq]))
2438                                 eq++;
2439                         else
2440                                 ibdev->eq_table[eq] = -1;
2441                 }
2442         }
2443
2444         for (i = eq; i < dev->caps.num_comp_vectors;
2445              ibdev->eq_table[i++] = -1)
2446                 ;
2447
2448         /* Advertise the new number of EQs to clients */
2449         ibdev->ib_dev.num_comp_vectors = eq;
2450 }
2451
2452 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2453 {
2454         int i;
2455         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2456
2457         /* no eqs were allocated */
2458         if (!ibdev->eq_table)
2459                 return;
2460
2461         /* Reset the advertised EQ number */
2462         ibdev->ib_dev.num_comp_vectors = 0;
2463
2464         for (i = 0; i < total_eqs; i++)
2465                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2466
2467         kfree(ibdev->eq_table);
2468         ibdev->eq_table = NULL;
2469 }
2470
2471 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2472                                struct ib_port_immutable *immutable)
2473 {
2474         struct ib_port_attr attr;
2475         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2476         int err;
2477
2478         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2479                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2480                 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2481         } else {
2482                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2483                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2484                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2485                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2486                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2487                 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2488                 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2489                     RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2490                         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2491         }
2492
2493         err = ib_query_port(ibdev, port_num, &attr);
2494         if (err)
2495                 return err;
2496
2497         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2498         immutable->gid_tbl_len = attr.gid_tbl_len;
2499
2500         return 0;
2501 }
2502
2503 static void get_fw_ver_str(struct ib_device *device, char *str)
2504 {
2505         struct mlx4_ib_dev *dev =
2506                 container_of(device, struct mlx4_ib_dev, ib_dev);
2507         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
2508                  (int) (dev->dev->caps.fw_ver >> 32),
2509                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2510                  (int) dev->dev->caps.fw_ver & 0xffff);
2511 }
2512
2513 static const struct ib_device_ops mlx4_ib_dev_ops = {
2514         .add_gid = mlx4_ib_add_gid,
2515         .alloc_mr = mlx4_ib_alloc_mr,
2516         .alloc_pd = mlx4_ib_alloc_pd,
2517         .alloc_ucontext = mlx4_ib_alloc_ucontext,
2518         .attach_mcast = mlx4_ib_mcg_attach,
2519         .create_ah = mlx4_ib_create_ah,
2520         .create_cq = mlx4_ib_create_cq,
2521         .create_qp = mlx4_ib_create_qp,
2522         .create_srq = mlx4_ib_create_srq,
2523         .dealloc_pd = mlx4_ib_dealloc_pd,
2524         .dealloc_ucontext = mlx4_ib_dealloc_ucontext,
2525         .del_gid = mlx4_ib_del_gid,
2526         .dereg_mr = mlx4_ib_dereg_mr,
2527         .destroy_ah = mlx4_ib_destroy_ah,
2528         .destroy_cq = mlx4_ib_destroy_cq,
2529         .destroy_qp = mlx4_ib_destroy_qp,
2530         .destroy_srq = mlx4_ib_destroy_srq,
2531         .detach_mcast = mlx4_ib_mcg_detach,
2532         .disassociate_ucontext = mlx4_ib_disassociate_ucontext,
2533         .drain_rq = mlx4_ib_drain_rq,
2534         .drain_sq = mlx4_ib_drain_sq,
2535         .get_dev_fw_str = get_fw_ver_str,
2536         .get_dma_mr = mlx4_ib_get_dma_mr,
2537         .get_link_layer = mlx4_ib_port_link_layer,
2538         .get_netdev = mlx4_ib_get_netdev,
2539         .get_port_immutable = mlx4_port_immutable,
2540         .map_mr_sg = mlx4_ib_map_mr_sg,
2541         .mmap = mlx4_ib_mmap,
2542         .modify_cq = mlx4_ib_modify_cq,
2543         .modify_device = mlx4_ib_modify_device,
2544         .modify_port = mlx4_ib_modify_port,
2545         .modify_qp = mlx4_ib_modify_qp,
2546         .modify_srq = mlx4_ib_modify_srq,
2547         .poll_cq = mlx4_ib_poll_cq,
2548         .post_recv = mlx4_ib_post_recv,
2549         .post_send = mlx4_ib_post_send,
2550         .post_srq_recv = mlx4_ib_post_srq_recv,
2551         .process_mad = mlx4_ib_process_mad,
2552         .query_ah = mlx4_ib_query_ah,
2553         .query_device = mlx4_ib_query_device,
2554         .query_gid = mlx4_ib_query_gid,
2555         .query_pkey = mlx4_ib_query_pkey,
2556         .query_port = mlx4_ib_query_port,
2557         .query_qp = mlx4_ib_query_qp,
2558         .query_srq = mlx4_ib_query_srq,
2559         .reg_user_mr = mlx4_ib_reg_user_mr,
2560         .req_notify_cq = mlx4_ib_arm_cq,
2561         .rereg_user_mr = mlx4_ib_rereg_user_mr,
2562         .resize_cq = mlx4_ib_resize_cq,
2563         INIT_RDMA_OBJ_SIZE(ib_pd, mlx4_ib_pd, ibpd),
2564         INIT_RDMA_OBJ_SIZE(ib_ucontext, mlx4_ib_ucontext, ibucontext),
2565 };
2566
2567 static const struct ib_device_ops mlx4_ib_dev_wq_ops = {
2568         .create_rwq_ind_table = mlx4_ib_create_rwq_ind_table,
2569         .create_wq = mlx4_ib_create_wq,
2570         .destroy_rwq_ind_table = mlx4_ib_destroy_rwq_ind_table,
2571         .destroy_wq = mlx4_ib_destroy_wq,
2572         .modify_wq = mlx4_ib_modify_wq,
2573 };
2574
2575 static const struct ib_device_ops mlx4_ib_dev_fmr_ops = {
2576         .alloc_fmr = mlx4_ib_fmr_alloc,
2577         .dealloc_fmr = mlx4_ib_fmr_dealloc,
2578         .map_phys_fmr = mlx4_ib_map_phys_fmr,
2579         .unmap_fmr = mlx4_ib_unmap_fmr,
2580 };
2581
2582 static const struct ib_device_ops mlx4_ib_dev_mw_ops = {
2583         .alloc_mw = mlx4_ib_alloc_mw,
2584         .dealloc_mw = mlx4_ib_dealloc_mw,
2585 };
2586
2587 static const struct ib_device_ops mlx4_ib_dev_xrc_ops = {
2588         .alloc_xrcd = mlx4_ib_alloc_xrcd,
2589         .dealloc_xrcd = mlx4_ib_dealloc_xrcd,
2590 };
2591
2592 static const struct ib_device_ops mlx4_ib_dev_fs_ops = {
2593         .create_flow = mlx4_ib_create_flow,
2594         .destroy_flow = mlx4_ib_destroy_flow,
2595 };
2596
2597 static void *mlx4_ib_add(struct mlx4_dev *dev)
2598 {
2599         struct mlx4_ib_dev *ibdev;
2600         int num_ports = 0;
2601         int i, j;
2602         int err;
2603         struct mlx4_ib_iboe *iboe;
2604         int ib_num_ports = 0;
2605         int num_req_counters;
2606         int allocated;
2607         u32 counter_index;
2608         struct counter_index *new_counter_index = NULL;
2609
2610         pr_info_once("%s", mlx4_ib_version);
2611
2612         num_ports = 0;
2613         mlx4_foreach_ib_transport_port(i, dev)
2614                 num_ports++;
2615
2616         /* No point in registering a device with no ports... */
2617         if (num_ports == 0)
2618                 return NULL;
2619
2620         ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev);
2621         if (!ibdev) {
2622                 dev_err(&dev->persist->pdev->dev,
2623                         "Device struct alloc failed\n");
2624                 return NULL;
2625         }
2626
2627         iboe = &ibdev->iboe;
2628
2629         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2630                 goto err_dealloc;
2631
2632         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2633                 goto err_pd;
2634
2635         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2636                                  PAGE_SIZE);
2637         if (!ibdev->uar_map)
2638                 goto err_uar;
2639         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2640
2641         ibdev->dev = dev;
2642         ibdev->bond_next_port   = 0;
2643
2644         ibdev->ib_dev.owner             = THIS_MODULE;
2645         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2646         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2647         ibdev->num_ports                = num_ports;
2648         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2649                                                 1 : ibdev->num_ports;
2650         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2651         ibdev->ib_dev.dev.parent        = &dev->persist->pdev->dev;
2652
2653         if (dev->caps.userspace_caps)
2654                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2655         else
2656                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2657
2658         ibdev->ib_dev.uverbs_cmd_mask   =
2659                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2660                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2661                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2662                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2663                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2664                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2665                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2666                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2667                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2668                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2669                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2670                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2671                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2672                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2673                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2674                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2675                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2676                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2677                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2678                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2679                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2680                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2681                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2682                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2683
2684         ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_ops);
2685         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2686                 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ) |
2687                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2688                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2689                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2690
2691         if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
2692             ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) ==
2693             IB_LINK_LAYER_ETHERNET) ||
2694             (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) ==
2695             IB_LINK_LAYER_ETHERNET))) {
2696                 ibdev->ib_dev.uverbs_ex_cmd_mask |=
2697                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ)          |
2698                         (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ)          |
2699                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ)         |
2700                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
2701                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
2702                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops);
2703         }
2704
2705         if (!mlx4_is_slave(ibdev->dev))
2706                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fmr_ops);
2707
2708         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2709             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2710                 ibdev->ib_dev.uverbs_cmd_mask |=
2711                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2712                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2713                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_mw_ops);
2714         }
2715
2716         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2717                 ibdev->ib_dev.uverbs_cmd_mask |=
2718                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2719                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2720                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_xrc_ops);
2721         }
2722
2723         if (check_flow_steering_support(dev)) {
2724                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2725                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2726                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2727                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2728                 ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fs_ops);
2729         }
2730
2731         mlx4_ib_alloc_eqs(dev, ibdev);
2732
2733         spin_lock_init(&iboe->lock);
2734
2735         if (init_node_data(ibdev))
2736                 goto err_map;
2737         mlx4_init_sl2vl_tbl(ibdev);
2738
2739         for (i = 0; i < ibdev->num_ports; ++i) {
2740                 mutex_init(&ibdev->counters_table[i].mutex);
2741                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2742                 iboe->last_port_state[i] = IB_PORT_DOWN;
2743         }
2744
2745         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2746         for (i = 0; i < num_req_counters; ++i) {
2747                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2748                 allocated = 0;
2749                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2750                                                 IB_LINK_LAYER_ETHERNET) {
2751                         err = mlx4_counter_alloc(ibdev->dev, &counter_index,
2752                                                  MLX4_RES_USAGE_DRIVER);
2753                         /* if failed to allocate a new counter, use default */
2754                         if (err)
2755                                 counter_index =
2756                                         mlx4_get_default_counter_index(dev,
2757                                                                        i + 1);
2758                         else
2759                                 allocated = 1;
2760                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2761                         counter_index = mlx4_get_default_counter_index(dev,
2762                                                                        i + 1);
2763                 }
2764                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2765                                             GFP_KERNEL);
2766                 if (!new_counter_index) {
2767                         if (allocated)
2768                                 mlx4_counter_free(ibdev->dev, counter_index);
2769                         goto err_counter;
2770                 }
2771                 new_counter_index->index = counter_index;
2772                 new_counter_index->allocated = allocated;
2773                 list_add_tail(&new_counter_index->list,
2774                               &ibdev->counters_table[i].counters_list);
2775                 ibdev->counters_table[i].default_counter = counter_index;
2776                 pr_info("counter index %d for port %d allocated %d\n",
2777                         counter_index, i + 1, allocated);
2778         }
2779         if (mlx4_is_bonded(dev))
2780                 for (i = 1; i < ibdev->num_ports ; ++i) {
2781                         new_counter_index =
2782                                         kmalloc(sizeof(struct counter_index),
2783                                                 GFP_KERNEL);
2784                         if (!new_counter_index)
2785                                 goto err_counter;
2786                         new_counter_index->index = counter_index;
2787                         new_counter_index->allocated = 0;
2788                         list_add_tail(&new_counter_index->list,
2789                                       &ibdev->counters_table[i].counters_list);
2790                         ibdev->counters_table[i].default_counter =
2791                                                                 counter_index;
2792                 }
2793
2794         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2795                 ib_num_ports++;
2796
2797         spin_lock_init(&ibdev->sm_lock);
2798         mutex_init(&ibdev->cap_mask_mutex);
2799         INIT_LIST_HEAD(&ibdev->qp_list);
2800         spin_lock_init(&ibdev->reset_flow_resource_lock);
2801
2802         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2803             ib_num_ports) {
2804                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2805                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2806                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2807                                             &ibdev->steer_qpn_base, 0,
2808                                             MLX4_RES_USAGE_DRIVER);
2809                 if (err)
2810                         goto err_counter;
2811
2812                 ibdev->ib_uc_qpns_bitmap =
2813                         kmalloc_array(BITS_TO_LONGS(ibdev->steer_qpn_count),
2814                                       sizeof(long),
2815                                       GFP_KERNEL);
2816                 if (!ibdev->ib_uc_qpns_bitmap)
2817                         goto err_steer_qp_release;
2818
2819                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2820                         bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2821                                     ibdev->steer_qpn_count);
2822                         err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2823                                         dev, ibdev->steer_qpn_base,
2824                                         ibdev->steer_qpn_base +
2825                                         ibdev->steer_qpn_count - 1);
2826                         if (err)
2827                                 goto err_steer_free_bitmap;
2828                 } else {
2829                         bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2830                                     ibdev->steer_qpn_count);
2831                 }
2832         }
2833
2834         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2835                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2836
2837         if (mlx4_ib_alloc_diag_counters(ibdev))
2838                 goto err_steer_free_bitmap;
2839
2840         rdma_set_device_sysfs_group(&ibdev->ib_dev, &mlx4_attr_group);
2841         ibdev->ib_dev.driver_id = RDMA_DRIVER_MLX4;
2842         if (ib_register_device(&ibdev->ib_dev, "mlx4_%d"))
2843                 goto err_diag_counters;
2844
2845         if (mlx4_ib_mad_init(ibdev))
2846                 goto err_reg;
2847
2848         if (mlx4_ib_init_sriov(ibdev))
2849                 goto err_mad;
2850
2851         if (!iboe->nb.notifier_call) {
2852                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2853                 err = register_netdevice_notifier(&iboe->nb);
2854                 if (err) {
2855                         iboe->nb.notifier_call = NULL;
2856                         goto err_notif;
2857                 }
2858         }
2859         if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2860                 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2861                 if (err)
2862                         goto err_notif;
2863         }
2864
2865         ibdev->ib_active = true;
2866         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2867                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2868                                          &ibdev->ib_dev);
2869
2870         if (mlx4_is_mfunc(ibdev->dev))
2871                 init_pkeys(ibdev);
2872
2873         /* create paravirt contexts for any VFs which are active */
2874         if (mlx4_is_master(ibdev->dev)) {
2875                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2876                         if (j == mlx4_master_func_num(ibdev->dev))
2877                                 continue;
2878                         if (mlx4_is_slave_active(ibdev->dev, j))
2879                                 do_slave_init(ibdev, j, 1);
2880                 }
2881         }
2882         return ibdev;
2883
2884 err_notif:
2885         if (ibdev->iboe.nb.notifier_call) {
2886                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2887                         pr_warn("failure unregistering notifier\n");
2888                 ibdev->iboe.nb.notifier_call = NULL;
2889         }
2890         flush_workqueue(wq);
2891
2892         mlx4_ib_close_sriov(ibdev);
2893
2894 err_mad:
2895         mlx4_ib_mad_cleanup(ibdev);
2896
2897 err_reg:
2898         ib_unregister_device(&ibdev->ib_dev);
2899
2900 err_diag_counters:
2901         mlx4_ib_diag_cleanup(ibdev);
2902
2903 err_steer_free_bitmap:
2904         kfree(ibdev->ib_uc_qpns_bitmap);
2905
2906 err_steer_qp_release:
2907         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2908                               ibdev->steer_qpn_count);
2909 err_counter:
2910         for (i = 0; i < ibdev->num_ports; ++i)
2911                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2912
2913 err_map:
2914         mlx4_ib_free_eqs(dev, ibdev);
2915         iounmap(ibdev->uar_map);
2916
2917 err_uar:
2918         mlx4_uar_free(dev, &ibdev->priv_uar);
2919
2920 err_pd:
2921         mlx4_pd_free(dev, ibdev->priv_pdn);
2922
2923 err_dealloc:
2924         ib_dealloc_device(&ibdev->ib_dev);
2925
2926         return NULL;
2927 }
2928
2929 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2930 {
2931         int offset;
2932
2933         WARN_ON(!dev->ib_uc_qpns_bitmap);
2934
2935         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2936                                          dev->steer_qpn_count,
2937                                          get_count_order(count));
2938         if (offset < 0)
2939                 return offset;
2940
2941         *qpn = dev->steer_qpn_base + offset;
2942         return 0;
2943 }
2944
2945 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2946 {
2947         if (!qpn ||
2948             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2949                 return;
2950
2951         if (WARN(qpn < dev->steer_qpn_base, "qpn = %u, steer_qpn_base = %u\n",
2952                  qpn, dev->steer_qpn_base))
2953                 /* not supposed to be here */
2954                 return;
2955
2956         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2957                               qpn - dev->steer_qpn_base,
2958                               get_count_order(count));
2959 }
2960
2961 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2962                          int is_attach)
2963 {
2964         int err;
2965         size_t flow_size;
2966         struct ib_flow_attr *flow = NULL;
2967         struct ib_flow_spec_ib *ib_spec;
2968
2969         if (is_attach) {
2970                 flow_size = sizeof(struct ib_flow_attr) +
2971                             sizeof(struct ib_flow_spec_ib);
2972                 flow = kzalloc(flow_size, GFP_KERNEL);
2973                 if (!flow)
2974                         return -ENOMEM;
2975                 flow->port = mqp->port;
2976                 flow->num_of_specs = 1;
2977                 flow->size = flow_size;
2978                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2979                 ib_spec->type = IB_FLOW_SPEC_IB;
2980                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2981                 /* Add an empty rule for IB L2 */
2982                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2983
2984                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2985                                             IB_FLOW_DOMAIN_NIC,
2986                                             MLX4_FS_REGULAR,
2987                                             &mqp->reg_id);
2988         } else {
2989                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2990         }
2991         kfree(flow);
2992         return err;
2993 }
2994
2995 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2996 {
2997         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2998         int p;
2999         int i;
3000
3001         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
3002                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
3003         ibdev->ib_active = false;
3004         flush_workqueue(wq);
3005
3006         mlx4_ib_close_sriov(ibdev);
3007         mlx4_ib_mad_cleanup(ibdev);
3008         ib_unregister_device(&ibdev->ib_dev);
3009         mlx4_ib_diag_cleanup(ibdev);
3010         if (ibdev->iboe.nb.notifier_call) {
3011                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
3012                         pr_warn("failure unregistering notifier\n");
3013                 ibdev->iboe.nb.notifier_call = NULL;
3014         }
3015
3016         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3017                               ibdev->steer_qpn_count);
3018         kfree(ibdev->ib_uc_qpns_bitmap);
3019
3020         iounmap(ibdev->uar_map);
3021         for (p = 0; p < ibdev->num_ports; ++p)
3022                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3023
3024         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3025                 mlx4_CLOSE_PORT(dev, p);
3026
3027         mlx4_ib_free_eqs(dev, ibdev);
3028
3029         mlx4_uar_free(dev, &ibdev->priv_uar);
3030         mlx4_pd_free(dev, ibdev->priv_pdn);
3031         ib_dealloc_device(&ibdev->ib_dev);
3032 }
3033
3034 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3035 {
3036         struct mlx4_ib_demux_work **dm = NULL;
3037         struct mlx4_dev *dev = ibdev->dev;
3038         int i;
3039         unsigned long flags;
3040         struct mlx4_active_ports actv_ports;
3041         unsigned int ports;
3042         unsigned int first_port;
3043
3044         if (!mlx4_is_master(dev))
3045                 return;
3046
3047         actv_ports = mlx4_get_active_ports(dev, slave);
3048         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3049         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3050
3051         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3052         if (!dm)
3053                 return;
3054
3055         for (i = 0; i < ports; i++) {
3056                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3057                 if (!dm[i]) {
3058                         while (--i >= 0)
3059                                 kfree(dm[i]);
3060                         goto out;
3061                 }
3062                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3063                 dm[i]->port = first_port + i + 1;
3064                 dm[i]->slave = slave;
3065                 dm[i]->do_init = do_init;
3066                 dm[i]->dev = ibdev;
3067         }
3068         /* initialize or tear down tunnel QPs for the slave */
3069         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3070         if (!ibdev->sriov.is_going_down) {
3071                 for (i = 0; i < ports; i++)
3072                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3073                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3074         } else {
3075                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3076                 for (i = 0; i < ports; i++)
3077                         kfree(dm[i]);
3078         }
3079 out:
3080         kfree(dm);
3081         return;
3082 }
3083
3084 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3085 {
3086         struct mlx4_ib_qp *mqp;
3087         unsigned long flags_qp;
3088         unsigned long flags_cq;
3089         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3090         struct list_head    cq_notify_list;
3091         struct mlx4_cq *mcq;
3092         unsigned long flags;
3093
3094         pr_warn("mlx4_ib_handle_catas_error was started\n");
3095         INIT_LIST_HEAD(&cq_notify_list);
3096
3097         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3098         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3099
3100         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3101                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3102                 if (mqp->sq.tail != mqp->sq.head) {
3103                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3104                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3105                         if (send_mcq->mcq.comp &&
3106                             mqp->ibqp.send_cq->comp_handler) {
3107                                 if (!send_mcq->mcq.reset_notify_added) {
3108                                         send_mcq->mcq.reset_notify_added = 1;
3109                                         list_add_tail(&send_mcq->mcq.reset_notify,
3110                                                       &cq_notify_list);
3111                                 }
3112                         }
3113                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3114                 }
3115                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3116                 /* Now, handle the QP's receive queue */
3117                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3118                 /* no handling is needed for SRQ */
3119                 if (!mqp->ibqp.srq) {
3120                         if (mqp->rq.tail != mqp->rq.head) {
3121                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3122                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3123                                 if (recv_mcq->mcq.comp &&
3124                                     mqp->ibqp.recv_cq->comp_handler) {
3125                                         if (!recv_mcq->mcq.reset_notify_added) {
3126                                                 recv_mcq->mcq.reset_notify_added = 1;
3127                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3128                                                               &cq_notify_list);
3129                                         }
3130                                 }
3131                                 spin_unlock_irqrestore(&recv_mcq->lock,
3132                                                        flags_cq);
3133                         }
3134                 }
3135                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3136         }
3137
3138         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3139                 mcq->comp(mcq);
3140         }
3141         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3142         pr_warn("mlx4_ib_handle_catas_error ended\n");
3143 }
3144
3145 static void handle_bonded_port_state_event(struct work_struct *work)
3146 {
3147         struct ib_event_work *ew =
3148                 container_of(work, struct ib_event_work, work);
3149         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3150         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3151         int i;
3152         struct ib_event ibev;
3153
3154         kfree(ew);
3155         spin_lock_bh(&ibdev->iboe.lock);
3156         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3157                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3158                 enum ib_port_state curr_port_state;
3159
3160                 if (!curr_netdev)
3161                         continue;
3162
3163                 curr_port_state =
3164                         (netif_running(curr_netdev) &&
3165                          netif_carrier_ok(curr_netdev)) ?
3166                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3167
3168                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3169                         curr_port_state : IB_PORT_ACTIVE;
3170         }
3171         spin_unlock_bh(&ibdev->iboe.lock);
3172
3173         ibev.device = &ibdev->ib_dev;
3174         ibev.element.port_num = 1;
3175         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3176                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3177
3178         ib_dispatch_event(&ibev);
3179 }
3180
3181 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3182 {
3183         u64 sl2vl;
3184         int err;
3185
3186         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3187         if (err) {
3188                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3189                        port, err);
3190                 sl2vl = 0;
3191         }
3192         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3193 }
3194
3195 static void ib_sl2vl_update_work(struct work_struct *work)
3196 {
3197         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3198         struct mlx4_ib_dev *mdev = ew->ib_dev;
3199         int port = ew->port;
3200
3201         mlx4_ib_sl2vl_update(mdev, port);
3202
3203         kfree(ew);
3204 }
3205
3206 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3207                                      int port)
3208 {
3209         struct ib_event_work *ew;
3210
3211         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3212         if (ew) {
3213                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3214                 ew->port = port;
3215                 ew->ib_dev = ibdev;
3216                 queue_work(wq, &ew->work);
3217         }
3218 }
3219
3220 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3221                           enum mlx4_dev_event event, unsigned long param)
3222 {
3223         struct ib_event ibev;
3224         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3225         struct mlx4_eqe *eqe = NULL;
3226         struct ib_event_work *ew;
3227         int p = 0;
3228
3229         if (mlx4_is_bonded(dev) &&
3230             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3231             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3232                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3233                 if (!ew)
3234                         return;
3235                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3236                 ew->ib_dev = ibdev;
3237                 queue_work(wq, &ew->work);
3238                 return;
3239         }
3240
3241         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3242                 eqe = (struct mlx4_eqe *)param;
3243         else
3244                 p = (int) param;
3245
3246         switch (event) {
3247         case MLX4_DEV_EVENT_PORT_UP:
3248                 if (p > ibdev->num_ports)
3249                         return;
3250                 if (!mlx4_is_slave(dev) &&
3251                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3252                         IB_LINK_LAYER_INFINIBAND) {
3253                         if (mlx4_is_master(dev))
3254                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3255                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3256                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3257                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3258                 }
3259                 ibev.event = IB_EVENT_PORT_ACTIVE;
3260                 break;
3261
3262         case MLX4_DEV_EVENT_PORT_DOWN:
3263                 if (p > ibdev->num_ports)
3264                         return;
3265                 ibev.event = IB_EVENT_PORT_ERR;
3266                 break;
3267
3268         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3269                 ibdev->ib_active = false;
3270                 ibev.event = IB_EVENT_DEVICE_FATAL;
3271                 mlx4_ib_handle_catas_error(ibdev);
3272                 break;
3273
3274         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3275                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3276                 if (!ew)
3277                         break;
3278
3279                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3280                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3281                 ew->ib_dev = ibdev;
3282                 /* need to queue only for port owner, which uses GEN_EQE */
3283                 if (mlx4_is_master(dev))
3284                         queue_work(wq, &ew->work);
3285                 else
3286                         handle_port_mgmt_change_event(&ew->work);
3287                 return;
3288
3289         case MLX4_DEV_EVENT_SLAVE_INIT:
3290                 /* here, p is the slave id */
3291                 do_slave_init(ibdev, p, 1);
3292                 if (mlx4_is_master(dev)) {
3293                         int i;
3294
3295                         for (i = 1; i <= ibdev->num_ports; i++) {
3296                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3297                                         == IB_LINK_LAYER_INFINIBAND)
3298                                         mlx4_ib_slave_alias_guid_event(ibdev,
3299                                                                        p, i,
3300                                                                        1);
3301                         }
3302                 }
3303                 return;
3304
3305         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3306                 if (mlx4_is_master(dev)) {
3307                         int i;
3308
3309                         for (i = 1; i <= ibdev->num_ports; i++) {
3310                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3311                                         == IB_LINK_LAYER_INFINIBAND)
3312                                         mlx4_ib_slave_alias_guid_event(ibdev,
3313                                                                        p, i,
3314                                                                        0);
3315                         }
3316                 }
3317                 /* here, p is the slave id */
3318                 do_slave_init(ibdev, p, 0);
3319                 return;
3320
3321         default:
3322                 return;
3323         }
3324
3325         ibev.device           = ibdev_ptr;
3326         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3327
3328         ib_dispatch_event(&ibev);
3329 }
3330
3331 static struct mlx4_interface mlx4_ib_interface = {
3332         .add            = mlx4_ib_add,
3333         .remove         = mlx4_ib_remove,
3334         .event          = mlx4_ib_event,
3335         .protocol       = MLX4_PROT_IB_IPV6,
3336         .flags          = MLX4_INTFF_BONDING
3337 };
3338
3339 static int __init mlx4_ib_init(void)
3340 {
3341         int err;
3342
3343         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3344         if (!wq)
3345                 return -ENOMEM;
3346
3347         err = mlx4_ib_mcg_init();
3348         if (err)
3349                 goto clean_wq;
3350
3351         err = mlx4_register_interface(&mlx4_ib_interface);
3352         if (err)
3353                 goto clean_mcg;
3354
3355         return 0;
3356
3357 clean_mcg:
3358         mlx4_ib_mcg_destroy();
3359
3360 clean_wq:
3361         destroy_workqueue(wq);
3362         return err;
3363 }
3364
3365 static void __exit mlx4_ib_cleanup(void)
3366 {
3367         mlx4_unregister_interface(&mlx4_ib_interface);
3368         mlx4_ib_mcg_destroy();
3369         destroy_workqueue(wq);
3370 }
3371
3372 module_init(mlx4_ib_init);
3373 module_exit(mlx4_ib_cleanup);