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