drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <net/ipv6.h>
  43 #include <net/addrconf.h>
  44
  45 #include <rdma/ib_smi.h>
  46 #include <rdma/ib_user_verbs.h>
  47 #include <rdma/ib_addr.h>
  48 #include <rdma/ib_cache.h>
  49
  50 #include <net/bonding.h>
  51
  52 #include <linux/mlx4/driver.h>
  53 #include <linux/mlx4/cmd.h>
  54 #include <linux/mlx4/qp.h>
  55
  56 #include "mlx4_ib.h"
  57 #include "user.h"
  58
  59 #define DRV_NAME        MLX4_IB_DRV_NAME
  60 #define DRV_VERSION     "2.2-1"
  61 #define DRV_RELDATE     "Feb 2014"
  62
  63 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  64 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  65 #define MLX4_IB_CARD_REV_A0   0xA0
  66
  67 MODULE_AUTHOR("Roland Dreier");
  68 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  69 MODULE_LICENSE("Dual BSD/GPL");
  70 MODULE_VERSION(DRV_VERSION);
  71
  72 int mlx4_ib_sm_guid_assign = 0;
  73 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  74 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  75
  76 static const char mlx4_ib_version[] =
  77         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  78         DRV_VERSION " (" DRV_RELDATE ")\n";
  79
  80 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  81
  82 static struct workqueue_struct *wq;
  83
  84 static void init_query_mad(struct ib_smp *mad)
  85 {
  86         mad->base_version  = 1;
  87         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  88         mad->class_version = 1;
  89         mad->method        = IB_MGMT_METHOD_GET;
  90 }
  91
  92 static int check_flow_steering_support(struct mlx4_dev *dev)
  93 {
  94         int eth_num_ports = 0;
  95         int ib_num_ports = 0;
  96
  97         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
  98
  99         if (dmfs) {
 100                 int i;
 101                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 102                         eth_num_ports++;
 103                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 104                         ib_num_ports++;
 105                 dmfs &= (!ib_num_ports ||
 106                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 107                         (!eth_num_ports ||
 108                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 109                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 110                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 111                         dmfs = 0;
 112                 }
 113         }
 114         return dmfs;
 115 }
 116
 117 static int num_ib_ports(struct mlx4_dev *dev)
 118 {
 119         int ib_ports = 0;
 120         int i;
 121
 122         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 123                 ib_ports++;
 124
 125         return ib_ports;
 126 }
 127
 128 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 129 {
 130         struct mlx4_ib_dev *ibdev = to_mdev(device);
 131         struct net_device *dev;
 132
 133         rcu_read_lock();
 134         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 135
 136         if (dev) {
 137                 if (mlx4_is_bonded(ibdev->dev)) {
 138                         struct net_device *upper = NULL;
 139
 140                         upper = netdev_master_upper_dev_get_rcu(dev);
 141                         if (upper) {
 142                                 struct net_device *active;
 143
 144                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 145                                 if (active)
 146                                         dev = active;
 147                         }
 148                 }
 149         }
 150         if (dev)
 151                 dev_hold(dev);
 152
 153         rcu_read_unlock();
 154         return dev;
 155 }
 156
 157 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 158                                   struct mlx4_ib_dev *ibdev,
 159                                   u8 port_num)
 160 {
 161         struct mlx4_cmd_mailbox *mailbox;
 162         int err;
 163         struct mlx4_dev *dev = ibdev->dev;
 164         int i;
 165         union ib_gid *gid_tbl;
 166
 167         mailbox = mlx4_alloc_cmd_mailbox(dev);
 168         if (IS_ERR(mailbox))
 169                 return -ENOMEM;
 170
 171         gid_tbl = mailbox->buf;
 172
 173         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 174                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 175
 176         err = mlx4_cmd(dev, mailbox->dma,
 177                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 178                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 179                        MLX4_CMD_WRAPPED);
 180         if (mlx4_is_bonded(dev))
 181                 err += mlx4_cmd(dev, mailbox->dma,
 182                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 183                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 184                                 MLX4_CMD_WRAPPED);
 185
 186         mlx4_free_cmd_mailbox(dev, mailbox);
 187         return err;
 188 }
 189
 190 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 191                                      struct mlx4_ib_dev *ibdev,
 192                                      u8 port_num)
 193 {
 194         struct mlx4_cmd_mailbox *mailbox;
 195         int err;
 196         struct mlx4_dev *dev = ibdev->dev;
 197         int i;
 198         struct {
 199                 union ib_gid    gid;
 200                 __be32          rsrvd1[2];
 201                 __be16          rsrvd2;
 202                 u8              type;
 203                 u8              version;
 204                 __be32          rsrvd3;
 205         } *gid_tbl;
 206
 207         mailbox = mlx4_alloc_cmd_mailbox(dev);
 208         if (IS_ERR(mailbox))
 209                 return -ENOMEM;
 210
 211         gid_tbl = mailbox->buf;
 212         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 213                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 214                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 215                         gid_tbl[i].version = 2;
 216                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 217                                 gid_tbl[i].type = 1;
 218                         else
 219                                 memset(&gid_tbl[i].gid, 0, 12);
 220                 }
 221         }
 222
 223         err = mlx4_cmd(dev, mailbox->dma,
 224                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 225                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 226                        MLX4_CMD_WRAPPED);
 227         if (mlx4_is_bonded(dev))
 228                 err += mlx4_cmd(dev, mailbox->dma,
 229                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 230                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 231                                 MLX4_CMD_WRAPPED);
 232
 233         mlx4_free_cmd_mailbox(dev, mailbox);
 234         return err;
 235 }
 236
 237 static int mlx4_ib_update_gids(struct gid_entry *gids,
 238                                struct mlx4_ib_dev *ibdev,
 239                                u8 port_num)
 240 {
 241         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 242                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 243
 244         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 245 }
 246
 247 static int mlx4_ib_add_gid(struct ib_device *device,
 248                            u8 port_num,
 249                            unsigned int index,
 250                            const union ib_gid *gid,
 251                            const struct ib_gid_attr *attr,
 252                            void **context)
 253 {
 254         struct mlx4_ib_dev *ibdev = to_mdev(device);
 255         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 256         struct mlx4_port_gid_table   *port_gid_table;
 257         int free = -1, found = -1;
 258         int ret = 0;
 259         int hw_update = 0;
 260         int i;
 261         struct gid_entry *gids = NULL;
 262
 263         if (!rdma_cap_roce_gid_table(device, port_num))
 264                 return -EINVAL;
 265
 266         if (port_num > MLX4_MAX_PORTS)
 267                 return -EINVAL;
 268
 269         if (!context)
 270                 return -EINVAL;
 271
 272         port_gid_table = &iboe->gids[port_num - 1];
 273         spin_lock_bh(&iboe->lock);
 274         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 275                 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
 276                     (port_gid_table->gids[i].gid_type == attr->gid_type))  {
 277                         found = i;
 278                         break;
 279                 }
 280                 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
 281                         free = i; /* HW has space */
 282         }
 283
 284         if (found < 0) {
 285                 if (free < 0) {
 286                         ret = -ENOSPC;
 287                 } else {
 288                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 289                         if (!port_gid_table->gids[free].ctx) {
 290                                 ret = -ENOMEM;
 291                         } else {
 292                                 *context = port_gid_table->gids[free].ctx;
 293                                 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
 294                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 295                                 port_gid_table->gids[free].ctx->real_index = free;
 296                                 port_gid_table->gids[free].ctx->refcount = 1;
 297                                 hw_update = 1;
 298                         }
 299                 }
 300         } else {
 301                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 302                 *context = ctx;
 303                 ctx->refcount++;
 304         }
 305         if (!ret && hw_update) {
 306                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 307                 if (!gids) {
 308                         ret = -ENOMEM;
 309                 } else {
 310                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 311                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 312                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 313                         }
 314                 }
 315         }
 316         spin_unlock_bh(&iboe->lock);
 317
 318         if (!ret && hw_update) {
 319                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 320                 kfree(gids);
 321         }
 322
 323         return ret;
 324 }
 325
 326 static int mlx4_ib_del_gid(struct ib_device *device,
 327                            u8 port_num,
 328                            unsigned int index,
 329                            void **context)
 330 {
 331         struct gid_cache_context *ctx = *context;
 332         struct mlx4_ib_dev *ibdev = to_mdev(device);
 333         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 334         struct mlx4_port_gid_table   *port_gid_table;
 335         int ret = 0;
 336         int hw_update = 0;
 337         struct gid_entry *gids = NULL;
 338
 339         if (!rdma_cap_roce_gid_table(device, port_num))
 340                 return -EINVAL;
 341
 342         if (port_num > MLX4_MAX_PORTS)
 343                 return -EINVAL;
 344
 345         port_gid_table = &iboe->gids[port_num - 1];
 346         spin_lock_bh(&iboe->lock);
 347         if (ctx) {
 348                 ctx->refcount--;
 349                 if (!ctx->refcount) {
 350                         unsigned int real_index = ctx->real_index;
 351
 352                         memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
 353                         kfree(port_gid_table->gids[real_index].ctx);
 354                         port_gid_table->gids[real_index].ctx = NULL;
 355                         hw_update = 1;
 356                 }
 357         }
 358         if (!ret && hw_update) {
 359                 int i;
 360
 361                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 362                 if (!gids) {
 363                         ret = -ENOMEM;
 364                 } else {
 365                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
 366                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 367                 }
 368         }
 369         spin_unlock_bh(&iboe->lock);
 370
 371         if (!ret && hw_update) {
 372                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 373                 kfree(gids);
 374         }
 375         return ret;
 376 }
 377
 378 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 379                                     u8 port_num, int index)
 380 {
 381         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 382         struct gid_cache_context *ctx = NULL;
 383         union ib_gid gid;
 384         struct mlx4_port_gid_table   *port_gid_table;
 385         int real_index = -EINVAL;
 386         int i;
 387         int ret;
 388         unsigned long flags;
 389         struct ib_gid_attr attr;
 390
 391         if (port_num > MLX4_MAX_PORTS)
 392                 return -EINVAL;
 393
 394         if (mlx4_is_bonded(ibdev->dev))
 395                 port_num = 1;
 396
 397         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 398                 return index;
 399
 400         ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
 401         if (ret)
 402                 return ret;
 403
 404         if (attr.ndev)
 405                 dev_put(attr.ndev);
 406
 407         if (!memcmp(&gid, &zgid, sizeof(gid)))
 408                 return -EINVAL;
 409
 410         spin_lock_irqsave(&iboe->lock, flags);
 411         port_gid_table = &iboe->gids[port_num - 1];
 412
 413         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 414                 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
 415                     attr.gid_type == port_gid_table->gids[i].gid_type) {
 416                         ctx = port_gid_table->gids[i].ctx;
 417                         break;
 418                 }
 419         if (ctx)
 420                 real_index = ctx->real_index;
 421         spin_unlock_irqrestore(&iboe->lock, flags);
 422         return real_index;
 423 }
 424
 425 static int mlx4_ib_query_device(struct ib_device *ibdev,
 426                                 struct ib_device_attr *props,
 427                                 struct ib_udata *uhw)
 428 {
 429         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 430         struct ib_smp *in_mad  = NULL;
 431         struct ib_smp *out_mad = NULL;
 432         int err = -ENOMEM;
 433         int have_ib_ports;
 434         struct mlx4_uverbs_ex_query_device cmd;
 435         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 436         struct mlx4_clock_params clock_params;
 437
 438         if (uhw->inlen) {
 439                 if (uhw->inlen < sizeof(cmd))
 440                         return -EINVAL;
 441
 442                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 443                 if (err)
 444                         return err;
 445
 446                 if (cmd.comp_mask)
 447                         return -EINVAL;
 448
 449                 if (cmd.reserved)
 450                         return -EINVAL;
 451         }
 452
 453         resp.response_length = offsetof(typeof(resp), response_length) +
 454                 sizeof(resp.response_length);
 455         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 456         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 457         if (!in_mad || !out_mad)
 458                 goto out;
 459
 460         init_query_mad(in_mad);
 461         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 462
 463         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 464                            1, NULL, NULL, in_mad, out_mad);
 465         if (err)
 466                 goto out;
 467
 468         memset(props, 0, sizeof *props);
 469
 470         have_ib_ports = num_ib_ports(dev->dev);
 471
 472         props->fw_ver = dev->dev->caps.fw_ver;
 473         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 474                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 475                 IB_DEVICE_SYS_IMAGE_GUID                |
 476                 IB_DEVICE_RC_RNR_NAK_GEN                |
 477                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 478         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 479                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 480         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 481                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 482         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 483                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 484         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 485                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 486         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 487                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 488         if (dev->dev->caps.max_gso_sz &&
 489             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 490             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 491                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 492         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 493                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 494         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 495             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 496             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 497                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 498         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 499                 props->device_cap_flags |= IB_DEVICE_XRC;
 500         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 501                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 502         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 503                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 504                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 505                 else
 506                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 507         if (dev->steering_support ==  MLX4_STEERING_MODE_DEVICE_MANAGED)
 508                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 509         }
 510
 511         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 512
 513         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 514                 0xffffff;
 515         props->vendor_part_id      = dev->dev->persist->pdev->device;
 516         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 517         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 518
 519         props->max_mr_size         = ~0ull;
 520         props->page_size_cap       = dev->dev->caps.page_size_cap;
 521         props->max_qp              = dev->dev->quotas.qp;
 522         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 523         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 524                                          dev->dev->caps.max_rq_sg);
 525         props->max_sge_rd          = MLX4_MAX_SGE_RD;
 526         props->max_cq              = dev->dev->quotas.cq;
 527         props->max_cqe             = dev->dev->caps.max_cqes;
 528         props->max_mr              = dev->dev->quotas.mpt;
 529         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 530         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 531         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 532         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 533         props->max_srq             = dev->dev->quotas.srq;
 534         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 535         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 536         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 537         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 538         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 539                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 540         props->masked_atomic_cap   = props->atomic_cap;
 541         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 542         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 543         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 544         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 545                                            props->max_mcast_grp;
 546         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 547         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 548         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 549
 550         if (!mlx4_is_slave(dev->dev))
 551                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 552
 553         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 554                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 555                 if (!err && !mlx4_is_slave(dev->dev)) {
 556                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 557                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 558                 }
 559         }
 560
 561         if (uhw->outlen) {
 562                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 563                 if (err)
 564                         goto out;
 565         }
 566 out:
 567         kfree(in_mad);
 568         kfree(out_mad);
 569
 570         return err;
 571 }
 572
 573 static enum rdma_link_layer
 574 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 575 {
 576         struct mlx4_dev *dev = to_mdev(device)->dev;
 577
 578         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 579                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 580 }
 581
 582 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 583                               struct ib_port_attr *props, int netw_view)
 584 {
 585         struct ib_smp *in_mad  = NULL;
 586         struct ib_smp *out_mad = NULL;
 587         int ext_active_speed;
 588         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 589         int err = -ENOMEM;
 590
 591         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 592         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 593         if (!in_mad || !out_mad)
 594                 goto out;
 595
 596         init_query_mad(in_mad);
 597         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 598         in_mad->attr_mod = cpu_to_be32(port);
 599
 600         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 601                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 602
 603         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 604                                 in_mad, out_mad);
 605         if (err)
 606                 goto out;
 607
 608
 609         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 610         props->lmc              = out_mad->data[34] & 0x7;
 611         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 612         props->sm_sl            = out_mad->data[36] & 0xf;
 613         props->state            = out_mad->data[32] & 0xf;
 614         props->phys_state       = out_mad->data[33] >> 4;
 615         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 616         if (netw_view)
 617                 props->gid_tbl_len = out_mad->data[50];
 618         else
 619                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 620         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 621         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 622         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 623         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 624         props->active_width     = out_mad->data[31] & 0xf;
 625         props->active_speed     = out_mad->data[35] >> 4;
 626         props->max_mtu          = out_mad->data[41] & 0xf;
 627         props->active_mtu       = out_mad->data[36] >> 4;
 628         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 629         props->max_vl_num       = out_mad->data[37] >> 4;
 630         props->init_type_reply  = out_mad->data[41] >> 4;
 631
 632         /* Check if extended speeds (EDR/FDR/...) are supported */
 633         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 634                 ext_active_speed = out_mad->data[62] >> 4;
 635
 636                 switch (ext_active_speed) {
 637                 case 1:
 638                         props->active_speed = IB_SPEED_FDR;
 639                         break;
 640                 case 2:
 641                         props->active_speed = IB_SPEED_EDR;
 642                         break;
 643                 }
 644         }
 645
 646         /* If reported active speed is QDR, check if is FDR-10 */
 647         if (props->active_speed == IB_SPEED_QDR) {
 648                 init_query_mad(in_mad);
 649                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 650                 in_mad->attr_mod = cpu_to_be32(port);
 651
 652                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 653                                    NULL, NULL, in_mad, out_mad);
 654                 if (err)
 655                         goto out;
 656
 657                 /* Checking LinkSpeedActive for FDR-10 */
 658                 if (out_mad->data[15] & 0x1)
 659                         props->active_speed = IB_SPEED_FDR10;
 660         }
 661
 662         /* Avoid wrong speed value returned by FW if the IB link is down. */
 663         if (props->state == IB_PORT_DOWN)
 664                  props->active_speed = IB_SPEED_SDR;
 665
 666 out:
 667         kfree(in_mad);
 668         kfree(out_mad);
 669         return err;
 670 }
 671
 672 static u8 state_to_phys_state(enum ib_port_state state)
 673 {
 674         return state == IB_PORT_ACTIVE ? 5 : 3;
 675 }
 676
 677 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 678                                struct ib_port_attr *props, int netw_view)
 679 {
 680
 681         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 682         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 683         struct net_device *ndev;
 684         enum ib_mtu tmp;
 685         struct mlx4_cmd_mailbox *mailbox;
 686         int err = 0;
 687         int is_bonded = mlx4_is_bonded(mdev->dev);
 688
 689         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 690         if (IS_ERR(mailbox))
 691                 return PTR_ERR(mailbox);
 692
 693         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 694                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 695                            MLX4_CMD_WRAPPED);
 696         if (err)
 697                 goto out;
 698
 699         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ?
 700                                                 IB_WIDTH_4X : IB_WIDTH_1X;
 701         props->active_speed     = IB_SPEED_QDR;
 702         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 703         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 704         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 705         props->pkey_tbl_len     = 1;
 706         props->max_mtu          = IB_MTU_4096;
 707         props->max_vl_num       = 2;
 708         props->state            = IB_PORT_DOWN;
 709         props->phys_state       = state_to_phys_state(props->state);
 710         props->active_mtu       = IB_MTU_256;
 711         spin_lock_bh(&iboe->lock);
 712         ndev = iboe->netdevs[port - 1];
 713         if (ndev && is_bonded) {
 714                 rcu_read_lock(); /* required to get upper dev */
 715                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 716                 rcu_read_unlock();
 717         }
 718         if (!ndev)
 719                 goto out_unlock;
 720
 721         tmp = iboe_get_mtu(ndev->mtu);
 722         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 723
 724         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 725                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 726         props->phys_state       = state_to_phys_state(props->state);
 727 out_unlock:
 728         spin_unlock_bh(&iboe->lock);
 729 out:
 730         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 731         return err;
 732 }
 733
 734 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 735                          struct ib_port_attr *props, int netw_view)
 736 {
 737         int err;
 738
 739         memset(props, 0, sizeof *props);
 740
 741         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 742                 ib_link_query_port(ibdev, port, props, netw_view) :
 743                                 eth_link_query_port(ibdev, port, props, netw_view);
 744
 745         return err;
 746 }
 747
 748 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 749                               struct ib_port_attr *props)
 750 {
 751         /* returns host view */
 752         return __mlx4_ib_query_port(ibdev, port, props, 0);
 753 }
 754
 755 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 756                         union ib_gid *gid, int netw_view)
 757 {
 758         struct ib_smp *in_mad  = NULL;
 759         struct ib_smp *out_mad = NULL;
 760         int err = -ENOMEM;
 761         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 762         int clear = 0;
 763         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 764
 765         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 766         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 767         if (!in_mad || !out_mad)
 768                 goto out;
 769
 770         init_query_mad(in_mad);
 771         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 772         in_mad->attr_mod = cpu_to_be32(port);
 773
 774         if (mlx4_is_mfunc(dev->dev) && netw_view)
 775                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 776
 777         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 778         if (err)
 779                 goto out;
 780
 781         memcpy(gid->raw, out_mad->data + 8, 8);
 782
 783         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 784                 if (index) {
 785                         /* For any index > 0, return the null guid */
 786                         err = 0;
 787                         clear = 1;
 788                         goto out;
 789                 }
 790         }
 791
 792         init_query_mad(in_mad);
 793         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 794         in_mad->attr_mod = cpu_to_be32(index / 8);
 795
 796         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 797                            NULL, NULL, in_mad, out_mad);
 798         if (err)
 799                 goto out;
 800
 801         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 802
 803 out:
 804         if (clear)
 805                 memset(gid->raw + 8, 0, 8);
 806         kfree(in_mad);
 807         kfree(out_mad);
 808         return err;
 809 }
 810
 811 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 812                              union ib_gid *gid)
 813 {
 814         int ret;
 815
 816         if (rdma_protocol_ib(ibdev, port))
 817                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 818
 819         if (!rdma_protocol_roce(ibdev, port))
 820                 return -ENODEV;
 821
 822         if (!rdma_cap_roce_gid_table(ibdev, port))
 823                 return -ENODEV;
 824
 825         ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
 826         if (ret == -EAGAIN) {
 827                 memcpy(gid, &zgid, sizeof(*gid));
 828                 return 0;
 829         }
 830
 831         return ret;
 832 }
 833
 834 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 835                          u16 *pkey, int netw_view)
 836 {
 837         struct ib_smp *in_mad  = NULL;
 838         struct ib_smp *out_mad = NULL;
 839         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 840         int err = -ENOMEM;
 841
 842         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 843         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 844         if (!in_mad || !out_mad)
 845                 goto out;
 846
 847         init_query_mad(in_mad);
 848         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 849         in_mad->attr_mod = cpu_to_be32(index / 32);
 850
 851         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 852                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 853
 854         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 855                            in_mad, out_mad);
 856         if (err)
 857                 goto out;
 858
 859         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 860
 861 out:
 862         kfree(in_mad);
 863         kfree(out_mad);
 864         return err;
 865 }
 866
 867 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 868 {
 869         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 870 }
 871
 872 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 873                                  struct ib_device_modify *props)
 874 {
 875         struct mlx4_cmd_mailbox *mailbox;
 876         unsigned long flags;
 877
 878         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 879                 return -EOPNOTSUPP;
 880
 881         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 882                 return 0;
 883
 884         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 885                 return -EOPNOTSUPP;
 886
 887         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 888         memcpy(ibdev->node_desc, props->node_desc, 64);
 889         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 890
 891         /*
 892          * If possible, pass node desc to FW, so it can generate
 893          * a 144 trap.  If cmd fails, just ignore.
 894          */
 895         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 896         if (IS_ERR(mailbox))
 897                 return 0;
 898
 899         memcpy(mailbox->buf, props->node_desc, 64);
 900         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 901                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 902
 903         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 904
 905         return 0;
 906 }
 907
 908 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 909                             u32 cap_mask)
 910 {
 911         struct mlx4_cmd_mailbox *mailbox;
 912         int err;
 913
 914         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 915         if (IS_ERR(mailbox))
 916                 return PTR_ERR(mailbox);
 917
 918         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 919                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 920                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 921         } else {
 922                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 923                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 924         }
 925
 926         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
 927                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 928                        MLX4_CMD_WRAPPED);
 929
 930         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 931         return err;
 932 }
 933
 934 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 935                                struct ib_port_modify *props)
 936 {
 937         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 938         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 939         struct ib_port_attr attr;
 940         u32 cap_mask;
 941         int err;
 942
 943         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
 944          * of whether port link layer is ETH or IB. For ETH ports, qkey
 945          * violations and port capabilities are not meaningful.
 946          */
 947         if (is_eth)
 948                 return 0;
 949
 950         mutex_lock(&mdev->cap_mask_mutex);
 951
 952         err = mlx4_ib_query_port(ibdev, port, &attr);
 953         if (err)
 954                 goto out;
 955
 956         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 957                 ~props->clr_port_cap_mask;
 958
 959         err = mlx4_ib_SET_PORT(mdev, port,
 960                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
 961                                cap_mask);
 962
 963 out:
 964         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 965         return err;
 966 }
 967
 968 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 969                                                   struct ib_udata *udata)
 970 {
 971         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 972         struct mlx4_ib_ucontext *context;
 973         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
 974         struct mlx4_ib_alloc_ucontext_resp resp;
 975         int err;
 976
 977         if (!dev->ib_active)
 978                 return ERR_PTR(-EAGAIN);
 979
 980         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
 981                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
 982                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
 983                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 984         } else {
 985                 resp.dev_caps         = dev->dev->caps.userspace_caps;
 986                 resp.qp_tab_size      = dev->dev->caps.num_qps;
 987                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 988                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 989                 resp.cqe_size         = dev->dev->caps.cqe_size;
 990         }
 991
 992         context = kzalloc(sizeof(*context), GFP_KERNEL);
 993         if (!context)
 994                 return ERR_PTR(-ENOMEM);
 995
 996         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 997         if (err) {
 998                 kfree(context);
 999                 return ERR_PTR(err);
1000         }
1001
1002         INIT_LIST_HEAD(&context->db_page_list);
1003         mutex_init(&context->db_page_mutex);
1004
1005         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1006                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1007         else
1008                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1009
1010         if (err) {
1011                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1012                 kfree(context);
1013                 return ERR_PTR(-EFAULT);
1014         }
1015
1016         return &context->ibucontext;
1017 }
1018
1019 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1020 {
1021         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1022
1023         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1024         kfree(context);
1025
1026         return 0;
1027 }
1028
1029 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
1030 {
1031         /* vma_open is called when a new VMA is created on top of our VMA.
1032          * This is done through either mremap flow or split_vma (usually due
1033          * to mlock, madvise, munmap, etc.). We do not support a clone of the
1034          * vma, as this VMA is strongly hardware related. Therefore we set the
1035          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1036          * calling us again and trying to do incorrect actions. We assume that
1037          * the original vma size is exactly a single page that there will be no
1038          * "splitting" operations on.
1039          */
1040         area->vm_ops = NULL;
1041 }
1042
1043 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
1044 {
1045         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1046
1047         /* It's guaranteed that all VMAs opened on a FD are closed before the
1048          * file itself is closed, therefore no sync is needed with the regular
1049          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1050          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1051          * The close operation is usually called under mm->mmap_sem except when
1052          * process is exiting.  The exiting case is handled explicitly as part
1053          * of mlx4_ib_disassociate_ucontext.
1054          */
1055         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1056                                 area->vm_private_data;
1057
1058         /* set the vma context pointer to null in the mlx4_ib driver's private
1059          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1060          */
1061         mlx4_ib_vma_priv_data->vma = NULL;
1062 }
1063
1064 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1065         .open = mlx4_ib_vma_open,
1066         .close = mlx4_ib_vma_close
1067 };
1068
1069 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1070 {
1071         int i;
1072         int ret = 0;
1073         struct vm_area_struct *vma;
1074         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1075         struct task_struct *owning_process  = NULL;
1076         struct mm_struct   *owning_mm       = NULL;
1077
1078         owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1079         if (!owning_process)
1080                 return;
1081
1082         owning_mm = get_task_mm(owning_process);
1083         if (!owning_mm) {
1084                 pr_info("no mm, disassociate ucontext is pending task termination\n");
1085                 while (1) {
1086                         /* make sure that task is dead before returning, it may
1087                          * prevent a rare case of module down in parallel to a
1088                          * call to mlx4_ib_vma_close.
1089                          */
1090                         put_task_struct(owning_process);
1091                         msleep(1);
1092                         owning_process = get_pid_task(ibcontext->tgid,
1093                                                       PIDTYPE_PID);
1094                         if (!owning_process ||
1095                             owning_process->state == TASK_DEAD) {
1096                                 pr_info("disassociate ucontext done, task was terminated\n");
1097                                 /* in case task was dead need to release the task struct */
1098                                 if (owning_process)
1099                                         put_task_struct(owning_process);
1100                                 return;
1101                         }
1102                 }
1103         }
1104
1105         /* need to protect from a race on closing the vma as part of
1106          * mlx4_ib_vma_close().
1107          */
1108         down_read(&owning_mm->mmap_sem);
1109         for (i = 0; i < HW_BAR_COUNT; i++) {
1110                 vma = context->hw_bar_info[i].vma;
1111                 if (!vma)
1112                         continue;
1113
1114                 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1115                                    context->hw_bar_info[i].vma->vm_start,
1116                                    PAGE_SIZE);
1117                 if (ret) {
1118                         pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1119                         BUG_ON(1);
1120                 }
1121
1122                 /* context going to be destroyed, should not access ops any more */
1123                 context->hw_bar_info[i].vma->vm_ops = NULL;
1124         }
1125
1126         up_read(&owning_mm->mmap_sem);
1127         mmput(owning_mm);
1128         put_task_struct(owning_process);
1129 }
1130
1131 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1132                                  struct mlx4_ib_vma_private_data *vma_private_data)
1133 {
1134         vma_private_data->vma = vma;
1135         vma->vm_private_data = vma_private_data;
1136         vma->vm_ops =  &mlx4_ib_vm_ops;
1137 }
1138
1139 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1140 {
1141         struct mlx4_ib_dev *dev = to_mdev(context->device);
1142         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1143
1144         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1145                 return -EINVAL;
1146
1147         if (vma->vm_pgoff == 0) {
1148                 /* We prevent double mmaping on same context */
1149                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1150                         return -EINVAL;
1151
1152                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1153
1154                 if (io_remap_pfn_range(vma, vma->vm_start,
1155                                        to_mucontext(context)->uar.pfn,
1156                                        PAGE_SIZE, vma->vm_page_prot))
1157                         return -EAGAIN;
1158
1159                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1160
1161         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1162                 /* We prevent double mmaping on same context */
1163                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1164                         return -EINVAL;
1165
1166                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1167
1168                 if (io_remap_pfn_range(vma, vma->vm_start,
1169                                        to_mucontext(context)->uar.pfn +
1170                                        dev->dev->caps.num_uars,
1171                                        PAGE_SIZE, vma->vm_page_prot))
1172                         return -EAGAIN;
1173
1174                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1175
1176         } else if (vma->vm_pgoff == 3) {
1177                 struct mlx4_clock_params params;
1178                 int ret;
1179
1180                 /* We prevent double mmaping on same context */
1181                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1182                         return -EINVAL;
1183
1184                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1185
1186                 if (ret)
1187                         return ret;
1188
1189                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1190                 if (io_remap_pfn_range(vma, vma->vm_start,
1191                                        (pci_resource_start(dev->dev->persist->pdev,
1192                                                            params.bar) +
1193                                         params.offset)
1194                                        >> PAGE_SHIFT,
1195                                        PAGE_SIZE, vma->vm_page_prot))
1196                         return -EAGAIN;
1197
1198                 mlx4_ib_set_vma_data(vma,
1199                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1200         } else {
1201                 return -EINVAL;
1202         }
1203
1204         return 0;
1205 }
1206
1207 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1208                                       struct ib_ucontext *context,
1209                                       struct ib_udata *udata)
1210 {
1211         struct mlx4_ib_pd *pd;
1212         int err;
1213
1214         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1215         if (!pd)
1216                 return ERR_PTR(-ENOMEM);
1217
1218         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1219         if (err) {
1220                 kfree(pd);
1221                 return ERR_PTR(err);
1222         }
1223
1224         if (context)
1225                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1226                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1227                         kfree(pd);
1228                         return ERR_PTR(-EFAULT);
1229                 }
1230
1231         return &pd->ibpd;
1232 }
1233
1234 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1235 {
1236         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1237         kfree(pd);
1238
1239         return 0;
1240 }
1241
1242 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1243                                           struct ib_ucontext *context,
1244                                           struct ib_udata *udata)
1245 {
1246         struct mlx4_ib_xrcd *xrcd;
1247         struct ib_cq_init_attr cq_attr = {};
1248         int err;
1249
1250         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1251                 return ERR_PTR(-ENOSYS);
1252
1253         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1254         if (!xrcd)
1255                 return ERR_PTR(-ENOMEM);
1256
1257         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1258         if (err)
1259                 goto err1;
1260
1261         xrcd->pd = ib_alloc_pd(ibdev);
1262         if (IS_ERR(xrcd->pd)) {
1263                 err = PTR_ERR(xrcd->pd);
1264                 goto err2;
1265         }
1266
1267         cq_attr.cqe = 1;
1268         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1269         if (IS_ERR(xrcd->cq)) {
1270                 err = PTR_ERR(xrcd->cq);
1271                 goto err3;
1272         }
1273
1274         return &xrcd->ibxrcd;
1275
1276 err3:
1277         ib_dealloc_pd(xrcd->pd);
1278 err2:
1279         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1280 err1:
1281         kfree(xrcd);
1282         return ERR_PTR(err);
1283 }
1284
1285 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1286 {
1287         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1288         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1289         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1290         kfree(xrcd);
1291
1292         return 0;
1293 }
1294
1295 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1296 {
1297         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1298         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1299         struct mlx4_ib_gid_entry *ge;
1300
1301         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1302         if (!ge)
1303                 return -ENOMEM;
1304
1305         ge->gid = *gid;
1306         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1307                 ge->port = mqp->port;
1308                 ge->added = 1;
1309         }
1310
1311         mutex_lock(&mqp->mutex);
1312         list_add_tail(&ge->list, &mqp->gid_list);
1313         mutex_unlock(&mqp->mutex);
1314
1315         return 0;
1316 }
1317
1318 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1319                                           struct mlx4_ib_counters *ctr_table)
1320 {
1321         struct counter_index *counter, *tmp_count;
1322
1323         mutex_lock(&ctr_table->mutex);
1324         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1325                                  list) {
1326                 if (counter->allocated)
1327                         mlx4_counter_free(ibdev->dev, counter->index);
1328                 list_del(&counter->list);
1329                 kfree(counter);
1330         }
1331         mutex_unlock(&ctr_table->mutex);
1332 }
1333
1334 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1335                    union ib_gid *gid)
1336 {
1337         struct net_device *ndev;
1338         int ret = 0;
1339
1340         if (!mqp->port)
1341                 return 0;
1342
1343         spin_lock_bh(&mdev->iboe.lock);
1344         ndev = mdev->iboe.netdevs[mqp->port - 1];
1345         if (ndev)
1346                 dev_hold(ndev);
1347         spin_unlock_bh(&mdev->iboe.lock);
1348
1349         if (ndev) {
1350                 ret = 1;
1351                 dev_put(ndev);
1352         }
1353
1354         return ret;
1355 }
1356
1357 struct mlx4_ib_steering {
1358         struct list_head list;
1359         struct mlx4_flow_reg_id reg_id;
1360         union ib_gid gid;
1361 };
1362
1363 static int parse_flow_attr(struct mlx4_dev *dev,
1364                            u32 qp_num,
1365                            union ib_flow_spec *ib_spec,
1366                            struct _rule_hw *mlx4_spec)
1367 {
1368         enum mlx4_net_trans_rule_id type;
1369
1370         switch (ib_spec->type) {
1371         case IB_FLOW_SPEC_ETH:
1372                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1373                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1374                        ETH_ALEN);
1375                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1376                        ETH_ALEN);
1377                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1378                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1379                 break;
1380         case IB_FLOW_SPEC_IB:
1381                 type = MLX4_NET_TRANS_RULE_ID_IB;
1382                 mlx4_spec->ib.l3_qpn =
1383                         cpu_to_be32(qp_num);
1384                 mlx4_spec->ib.qpn_mask =
1385                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1386                 break;
1387
1388
1389         case IB_FLOW_SPEC_IPV4:
1390                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1391                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1392                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1393                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1394                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1395                 break;
1396
1397         case IB_FLOW_SPEC_TCP:
1398         case IB_FLOW_SPEC_UDP:
1399                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1400                                         MLX4_NET_TRANS_RULE_ID_TCP :
1401                                         MLX4_NET_TRANS_RULE_ID_UDP;
1402                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1403                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1404                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1405                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1406                 break;
1407
1408         default:
1409                 return -EINVAL;
1410         }
1411         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1412             mlx4_hw_rule_sz(dev, type) < 0)
1413                 return -EINVAL;
1414         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1415         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1416         return mlx4_hw_rule_sz(dev, type);
1417 }
1418
1419 struct default_rules {
1420         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1421         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1422         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1423         __u8  link_layer;
1424 };
1425 static const struct default_rules default_table[] = {
1426         {
1427                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1428                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1429                 .rules_create_list = {IB_FLOW_SPEC_IB},
1430                 .link_layer = IB_LINK_LAYER_INFINIBAND
1431         }
1432 };
1433
1434 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1435                                          struct ib_flow_attr *flow_attr)
1436 {
1437         int i, j, k;
1438         void *ib_flow;
1439         const struct default_rules *pdefault_rules = default_table;
1440         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1441
1442         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1443                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1444                 memset(&field_types, 0, sizeof(field_types));
1445
1446                 if (link_layer != pdefault_rules->link_layer)
1447                         continue;
1448
1449                 ib_flow = flow_attr + 1;
1450                 /* we assume the specs are sorted */
1451                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1452                      j < flow_attr->num_of_specs; k++) {
1453                         union ib_flow_spec *current_flow =
1454                                 (union ib_flow_spec *)ib_flow;
1455
1456                         /* same layer but different type */
1457                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1458                              (pdefault_rules->mandatory_fields[k] &
1459                               IB_FLOW_SPEC_LAYER_MASK)) &&
1460                             (current_flow->type !=
1461                              pdefault_rules->mandatory_fields[k]))
1462                                 goto out;
1463
1464                         /* same layer, try match next one */
1465                         if (current_flow->type ==
1466                             pdefault_rules->mandatory_fields[k]) {
1467                                 j++;
1468                                 ib_flow +=
1469                                         ((union ib_flow_spec *)ib_flow)->size;
1470                         }
1471                 }
1472
1473                 ib_flow = flow_attr + 1;
1474                 for (j = 0; j < flow_attr->num_of_specs;
1475                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1476                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1477                                 /* same layer and same type */
1478                                 if (((union ib_flow_spec *)ib_flow)->type ==
1479                                     pdefault_rules->mandatory_not_fields[k])
1480                                         goto out;
1481
1482                 return i;
1483         }
1484 out:
1485         return -1;
1486 }
1487
1488 static int __mlx4_ib_create_default_rules(
1489                 struct mlx4_ib_dev *mdev,
1490                 struct ib_qp *qp,
1491                 const struct default_rules *pdefault_rules,
1492                 struct _rule_hw *mlx4_spec) {
1493         int size = 0;
1494         int i;
1495
1496         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1497                 int ret;
1498                 union ib_flow_spec ib_spec;
1499                 switch (pdefault_rules->rules_create_list[i]) {
1500                 case 0:
1501                         /* no rule */
1502                         continue;
1503                 case IB_FLOW_SPEC_IB:
1504                         ib_spec.type = IB_FLOW_SPEC_IB;
1505                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1506
1507                         break;
1508                 default:
1509                         /* invalid rule */
1510                         return -EINVAL;
1511                 }
1512                 /* We must put empty rule, qpn is being ignored */
1513                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1514                                       mlx4_spec);
1515                 if (ret < 0) {
1516                         pr_info("invalid parsing\n");
1517                         return -EINVAL;
1518                 }
1519
1520                 mlx4_spec = (void *)mlx4_spec + ret;
1521                 size += ret;
1522         }
1523         return size;
1524 }
1525
1526 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1527                           int domain,
1528                           enum mlx4_net_trans_promisc_mode flow_type,
1529                           u64 *reg_id)
1530 {
1531         int ret, i;
1532         int size = 0;
1533         void *ib_flow;
1534         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1535         struct mlx4_cmd_mailbox *mailbox;
1536         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1537         int default_flow;
1538
1539         static const u16 __mlx4_domain[] = {
1540                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1541                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1542                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1543                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1544         };
1545
1546         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1547                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1548                 return -EINVAL;
1549         }
1550
1551         if (domain >= IB_FLOW_DOMAIN_NUM) {
1552                 pr_err("Invalid domain value %d\n", domain);
1553                 return -EINVAL;
1554         }
1555
1556         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1557                 return -EINVAL;
1558
1559         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1560         if (IS_ERR(mailbox))
1561                 return PTR_ERR(mailbox);
1562         ctrl = mailbox->buf;
1563
1564         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1565                                  flow_attr->priority);
1566         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1567         ctrl->port = flow_attr->port;
1568         ctrl->qpn = cpu_to_be32(qp->qp_num);
1569
1570         ib_flow = flow_attr + 1;
1571         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1572         /* Add default flows */
1573         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1574         if (default_flow >= 0) {
1575                 ret = __mlx4_ib_create_default_rules(
1576                                 mdev, qp, default_table + default_flow,
1577                                 mailbox->buf + size);
1578                 if (ret < 0) {
1579                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1580                         return -EINVAL;
1581                 }
1582                 size += ret;
1583         }
1584         for (i = 0; i < flow_attr->num_of_specs; i++) {
1585                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1586                                       mailbox->buf + size);
1587                 if (ret < 0) {
1588                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1589                         return -EINVAL;
1590                 }
1591                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1592                 size += ret;
1593         }
1594
1595         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1596                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1597                            MLX4_CMD_WRAPPED);
1598         if (ret == -ENOMEM)
1599                 pr_err("mcg table is full. Fail to register network rule.\n");
1600         else if (ret == -ENXIO)
1601                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1602         else if (ret)
1603                 pr_err("Invalid argumant. Fail to register network rule.\n");
1604
1605         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1606         return ret;
1607 }
1608
1609 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1610 {
1611         int err;
1612         err = mlx4_cmd(dev, reg_id, 0, 0,
1613                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1614                        MLX4_CMD_WRAPPED);
1615         if (err)
1616                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1617                        reg_id);
1618         return err;
1619 }
1620
1621 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1622                                     u64 *reg_id)
1623 {
1624         void *ib_flow;
1625         union ib_flow_spec *ib_spec;
1626         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1627         int err = 0;
1628
1629         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1630             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1631                 return 0; /* do nothing */
1632
1633         ib_flow = flow_attr + 1;
1634         ib_spec = (union ib_flow_spec *)ib_flow;
1635
1636         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1637                 return 0; /* do nothing */
1638
1639         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1640                                     flow_attr->port, qp->qp_num,
1641                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1642                                     reg_id);
1643         return err;
1644 }
1645
1646 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1647                                       struct ib_flow_attr *flow_attr,
1648                                       enum mlx4_net_trans_promisc_mode *type)
1649 {
1650         int err = 0;
1651
1652         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1653             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1654             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1655                 return -EOPNOTSUPP;
1656         }
1657
1658         if (flow_attr->num_of_specs == 0) {
1659                 type[0] = MLX4_FS_MC_SNIFFER;
1660                 type[1] = MLX4_FS_UC_SNIFFER;
1661         } else {
1662                 union ib_flow_spec *ib_spec;
1663
1664                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1665                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1666                         return -EINVAL;
1667
1668                 /* if all is zero than MC and UC */
1669                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1670                         type[0] = MLX4_FS_MC_SNIFFER;
1671                         type[1] = MLX4_FS_UC_SNIFFER;
1672                 } else {
1673                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1674                                             ib_spec->eth.mask.dst_mac[1],
1675                                             ib_spec->eth.mask.dst_mac[2],
1676                                             ib_spec->eth.mask.dst_mac[3],
1677                                             ib_spec->eth.mask.dst_mac[4],
1678                                             ib_spec->eth.mask.dst_mac[5]};
1679
1680                         /* Above xor was only on MC bit, non empty mask is valid
1681                          * only if this bit is set and rest are zero.
1682                          */
1683                         if (!is_zero_ether_addr(&mac[0]))
1684                                 return -EINVAL;
1685
1686                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1687                                 type[0] = MLX4_FS_MC_SNIFFER;
1688                         else
1689                                 type[0] = MLX4_FS_UC_SNIFFER;
1690                 }
1691         }
1692
1693         return err;
1694 }
1695
1696 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1697                                     struct ib_flow_attr *flow_attr,
1698                                     int domain)
1699 {
1700         int err = 0, i = 0, j = 0;
1701         struct mlx4_ib_flow *mflow;
1702         enum mlx4_net_trans_promisc_mode type[2];
1703         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1704         int is_bonded = mlx4_is_bonded(dev);
1705
1706         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1707             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1708                 return ERR_PTR(-EOPNOTSUPP);
1709
1710         memset(type, 0, sizeof(type));
1711
1712         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1713         if (!mflow) {
1714                 err = -ENOMEM;
1715                 goto err_free;
1716         }
1717
1718         switch (flow_attr->type) {
1719         case IB_FLOW_ATTR_NORMAL:
1720                 /* If dont trap flag (continue match) is set, under specific
1721                  * condition traffic be replicated to given qp,
1722                  * without stealing it
1723                  */
1724                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1725                         err = mlx4_ib_add_dont_trap_rule(dev,
1726                                                          flow_attr,
1727                                                          type);
1728                         if (err)
1729                                 goto err_free;
1730                 } else {
1731                         type[0] = MLX4_FS_REGULAR;
1732                 }
1733                 break;
1734
1735         case IB_FLOW_ATTR_ALL_DEFAULT:
1736                 type[0] = MLX4_FS_ALL_DEFAULT;
1737                 break;
1738
1739         case IB_FLOW_ATTR_MC_DEFAULT:
1740                 type[0] = MLX4_FS_MC_DEFAULT;
1741                 break;
1742
1743         case IB_FLOW_ATTR_SNIFFER:
1744                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1745                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1746                 break;
1747
1748         default:
1749                 err = -EINVAL;
1750                 goto err_free;
1751         }
1752
1753         while (i < ARRAY_SIZE(type) && type[i]) {
1754                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1755                                             &mflow->reg_id[i].id);
1756                 if (err)
1757                         goto err_create_flow;
1758                 if (is_bonded) {
1759                         /* Application always sees one port so the mirror rule
1760                          * must be on port #2
1761                          */
1762                         flow_attr->port = 2;
1763                         err = __mlx4_ib_create_flow(qp, flow_attr,
1764                                                     domain, type[j],
1765                                                     &mflow->reg_id[j].mirror);
1766                         flow_attr->port = 1;
1767                         if (err)
1768                                 goto err_create_flow;
1769                         j++;
1770                 }
1771
1772                 i++;
1773         }
1774
1775         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1776                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1777                                                &mflow->reg_id[i].id);
1778                 if (err)
1779                         goto err_create_flow;
1780
1781                 if (is_bonded) {
1782                         flow_attr->port = 2;
1783                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1784                                                        &mflow->reg_id[j].mirror);
1785                         flow_attr->port = 1;
1786                         if (err)
1787                                 goto err_create_flow;
1788                         j++;
1789                 }
1790                 /* function to create mirror rule */
1791                 i++;
1792         }
1793
1794         return &mflow->ibflow;
1795
1796 err_create_flow:
1797         while (i) {
1798                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1799                                              mflow->reg_id[i].id);
1800                 i--;
1801         }
1802
1803         while (j) {
1804                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1805                                              mflow->reg_id[j].mirror);
1806                 j--;
1807         }
1808 err_free:
1809         kfree(mflow);
1810         return ERR_PTR(err);
1811 }
1812
1813 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1814 {
1815         int err, ret = 0;
1816         int i = 0;
1817         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1818         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1819
1820         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1821                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1822                 if (err)
1823                         ret = err;
1824                 if (mflow->reg_id[i].mirror) {
1825                         err = __mlx4_ib_destroy_flow(mdev->dev,
1826                                                      mflow->reg_id[i].mirror);
1827                         if (err)
1828                                 ret = err;
1829                 }
1830                 i++;
1831         }
1832
1833         kfree(mflow);
1834         return ret;
1835 }
1836
1837 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1838 {
1839         int err;
1840         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1841         struct mlx4_dev *dev = mdev->dev;
1842         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1843         struct mlx4_ib_steering *ib_steering = NULL;
1844         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1845         struct mlx4_flow_reg_id reg_id;
1846
1847         if (mdev->dev->caps.steering_mode ==
1848             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1849                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1850                 if (!ib_steering)
1851                         return -ENOMEM;
1852         }
1853
1854         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1855                                     !!(mqp->flags &
1856                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1857                                     prot, &reg_id.id);
1858         if (err) {
1859                 pr_err("multicast attach op failed, err %d\n", err);
1860                 goto err_malloc;
1861         }
1862
1863         reg_id.mirror = 0;
1864         if (mlx4_is_bonded(dev)) {
1865                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1866                                             (mqp->port == 1) ? 2 : 1,
1867                                             !!(mqp->flags &
1868                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1869                                             prot, &reg_id.mirror);
1870                 if (err)
1871                         goto err_add;
1872         }
1873
1874         err = add_gid_entry(ibqp, gid);
1875         if (err)
1876                 goto err_add;
1877
1878         if (ib_steering) {
1879                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1880                 ib_steering->reg_id = reg_id;
1881                 mutex_lock(&mqp->mutex);
1882                 list_add(&ib_steering->list, &mqp->steering_rules);
1883                 mutex_unlock(&mqp->mutex);
1884         }
1885         return 0;
1886
1887 err_add:
1888         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1889                               prot, reg_id.id);
1890         if (reg_id.mirror)
1891                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1892                                       prot, reg_id.mirror);
1893 err_malloc:
1894         kfree(ib_steering);
1895
1896         return err;
1897 }
1898
1899 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1900 {
1901         struct mlx4_ib_gid_entry *ge;
1902         struct mlx4_ib_gid_entry *tmp;
1903         struct mlx4_ib_gid_entry *ret = NULL;
1904
1905         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1906                 if (!memcmp(raw, ge->gid.raw, 16)) {
1907                         ret = ge;
1908                         break;
1909                 }
1910         }
1911
1912         return ret;
1913 }
1914
1915 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1916 {
1917         int err;
1918         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1919         struct mlx4_dev *dev = mdev->dev;
1920         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1921         struct net_device *ndev;
1922         struct mlx4_ib_gid_entry *ge;
1923         struct mlx4_flow_reg_id reg_id = {0, 0};
1924         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1925
1926         if (mdev->dev->caps.steering_mode ==
1927             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1928                 struct mlx4_ib_steering *ib_steering;
1929
1930                 mutex_lock(&mqp->mutex);
1931                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1932                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1933                                 list_del(&ib_steering->list);
1934                                 break;
1935                         }
1936                 }
1937                 mutex_unlock(&mqp->mutex);
1938                 if (&ib_steering->list == &mqp->steering_rules) {
1939                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1940                         return -EINVAL;
1941                 }
1942                 reg_id = ib_steering->reg_id;
1943                 kfree(ib_steering);
1944         }
1945
1946         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1947                                     prot, reg_id.id);
1948         if (err)
1949                 return err;
1950
1951         if (mlx4_is_bonded(dev)) {
1952                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1953                                             prot, reg_id.mirror);
1954                 if (err)
1955                         return err;
1956         }
1957
1958         mutex_lock(&mqp->mutex);
1959         ge = find_gid_entry(mqp, gid->raw);
1960         if (ge) {
1961                 spin_lock_bh(&mdev->iboe.lock);
1962                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1963                 if (ndev)
1964                         dev_hold(ndev);
1965                 spin_unlock_bh(&mdev->iboe.lock);
1966                 if (ndev)
1967                         dev_put(ndev);
1968                 list_del(&ge->list);
1969                 kfree(ge);
1970         } else
1971                 pr_warn("could not find mgid entry\n");
1972
1973         mutex_unlock(&mqp->mutex);
1974
1975         return 0;
1976 }
1977
1978 static int init_node_data(struct mlx4_ib_dev *dev)
1979 {
1980         struct ib_smp *in_mad  = NULL;
1981         struct ib_smp *out_mad = NULL;
1982         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1983         int err = -ENOMEM;
1984
1985         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1986         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1987         if (!in_mad || !out_mad)
1988                 goto out;
1989
1990         init_query_mad(in_mad);
1991         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1992         if (mlx4_is_master(dev->dev))
1993                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1994
1995         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1996         if (err)
1997                 goto out;
1998
1999         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
2000
2001         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2002
2003         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2004         if (err)
2005                 goto out;
2006
2007         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2008         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2009
2010 out:
2011         kfree(in_mad);
2012         kfree(out_mad);
2013         return err;
2014 }
2015
2016 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2017                         char *buf)
2018 {
2019         struct mlx4_ib_dev *dev =
2020                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2021         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2022 }
2023
2024 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
2025                            char *buf)
2026 {
2027         struct mlx4_ib_dev *dev =
2028                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2029         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
2030                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2031                        (int) dev->dev->caps.fw_ver & 0xffff);
2032 }
2033
2034 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2035                         char *buf)
2036 {
2037         struct mlx4_ib_dev *dev =
2038                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2039         return sprintf(buf, "%x\n", dev->dev->rev_id);
2040 }
2041
2042 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2043                           char *buf)
2044 {
2045         struct mlx4_ib_dev *dev =
2046                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2047         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2048                        dev->dev->board_id);
2049 }
2050
2051 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
2052 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
2053 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
2054 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
2055
2056 static struct device_attribute *mlx4_class_attributes[] = {
2057         &dev_attr_hw_rev,
2058         &dev_attr_fw_ver,
2059         &dev_attr_hca_type,
2060         &dev_attr_board_id
2061 };
2062
2063 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2064 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2065                                struct net_device *dev,
2066                                int port)
2067 {
2068         u64 new_smac = 0;
2069         u64 release_mac = MLX4_IB_INVALID_MAC;
2070         struct mlx4_ib_qp *qp;
2071
2072         read_lock(&dev_base_lock);
2073         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2074         read_unlock(&dev_base_lock);
2075
2076         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2077
2078         /* no need for update QP1 and mac registration in non-SRIOV */
2079         if (!mlx4_is_mfunc(ibdev->dev))
2080                 return;
2081
2082         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2083         qp = ibdev->qp1_proxy[port - 1];
2084         if (qp) {
2085                 int new_smac_index;
2086                 u64 old_smac;
2087                 struct mlx4_update_qp_params update_params;
2088
2089                 mutex_lock(&qp->mutex);
2090                 old_smac = qp->pri.smac;
2091                 if (new_smac == old_smac)
2092                         goto unlock;
2093
2094                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2095
2096                 if (new_smac_index < 0)
2097                         goto unlock;
2098
2099                 update_params.smac_index = new_smac_index;
2100                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2101                                    &update_params)) {
2102                         release_mac = new_smac;
2103                         goto unlock;
2104                 }
2105                 /* if old port was zero, no mac was yet registered for this QP */
2106                 if (qp->pri.smac_port)
2107                         release_mac = old_smac;
2108                 qp->pri.smac = new_smac;
2109                 qp->pri.smac_port = port;
2110                 qp->pri.smac_index = new_smac_index;
2111         }
2112
2113 unlock:
2114         if (release_mac != MLX4_IB_INVALID_MAC)
2115                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2116         if (qp)
2117                 mutex_unlock(&qp->mutex);
2118         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2119 }
2120
2121 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2122                                  struct net_device *dev,
2123                                  unsigned long event)
2124
2125 {
2126         struct mlx4_ib_iboe *iboe;
2127         int update_qps_port = -1;
2128         int port;
2129
2130         ASSERT_RTNL();
2131
2132         iboe = &ibdev->iboe;
2133
2134         spin_lock_bh(&iboe->lock);
2135         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2136
2137                 iboe->netdevs[port - 1] =
2138                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2139
2140                 if (dev == iboe->netdevs[port - 1] &&
2141                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2142                      event == NETDEV_UP || event == NETDEV_CHANGE))
2143                         update_qps_port = port;
2144
2145         }
2146         spin_unlock_bh(&iboe->lock);
2147
2148         if (update_qps_port > 0)
2149                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2150 }
2151
2152 static int mlx4_ib_netdev_event(struct notifier_block *this,
2153                                 unsigned long event, void *ptr)
2154 {
2155         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2156         struct mlx4_ib_dev *ibdev;
2157
2158         if (!net_eq(dev_net(dev), &init_net))
2159                 return NOTIFY_DONE;
2160
2161         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2162         mlx4_ib_scan_netdevs(ibdev, dev, event);
2163
2164         return NOTIFY_DONE;
2165 }
2166
2167 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2168 {
2169         int port;
2170         int slave;
2171         int i;
2172
2173         if (mlx4_is_master(ibdev->dev)) {
2174                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2175                      ++slave) {
2176                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2177                                 for (i = 0;
2178                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2179                                      ++i) {
2180                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2181                                         /* master has the identity virt2phys pkey mapping */
2182                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2183                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2184                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2185                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2186                                 }
2187                         }
2188                 }
2189                 /* initialize pkey cache */
2190                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2191                         for (i = 0;
2192                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2193                              ++i)
2194                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2195                                         (i) ? 0 : 0xFFFF;
2196                 }
2197         }
2198 }
2199
2200 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2201 {
2202         int i, j, eq = 0, total_eqs = 0;
2203
2204         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2205                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2206         if (!ibdev->eq_table)
2207                 return;
2208
2209         for (i = 1; i <= dev->caps.num_ports; i++) {
2210                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2211                      j++, total_eqs++) {
2212                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2213                                 continue;
2214                         ibdev->eq_table[eq] = total_eqs;
2215                         if (!mlx4_assign_eq(dev, i,
2216                                             &ibdev->eq_table[eq]))
2217                                 eq++;
2218                         else
2219                                 ibdev->eq_table[eq] = -1;
2220                 }
2221         }
2222
2223         for (i = eq; i < dev->caps.num_comp_vectors;
2224              ibdev->eq_table[i++] = -1)
2225                 ;
2226
2227         /* Advertise the new number of EQs to clients */
2228         ibdev->ib_dev.num_comp_vectors = eq;
2229 }
2230
2231 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2232 {
2233         int i;
2234         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2235
2236         /* no eqs were allocated */
2237         if (!ibdev->eq_table)
2238                 return;
2239
2240         /* Reset the advertised EQ number */
2241         ibdev->ib_dev.num_comp_vectors = 0;
2242
2243         for (i = 0; i < total_eqs; i++)
2244                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2245
2246         kfree(ibdev->eq_table);
2247         ibdev->eq_table = NULL;
2248 }
2249
2250 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2251                                struct ib_port_immutable *immutable)
2252 {
2253         struct ib_port_attr attr;
2254         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2255         int err;
2256
2257         err = mlx4_ib_query_port(ibdev, port_num, &attr);
2258         if (err)
2259                 return err;
2260
2261         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2262         immutable->gid_tbl_len = attr.gid_tbl_len;
2263
2264         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2265                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2266         } else {
2267                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2268                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2269                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2270                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2271                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2272         }
2273
2274         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2275
2276         return 0;
2277 }
2278
2279 static void *mlx4_ib_add(struct mlx4_dev *dev)
2280 {
2281         struct mlx4_ib_dev *ibdev;
2282         int num_ports = 0;
2283         int i, j;
2284         int err;
2285         struct mlx4_ib_iboe *iboe;
2286         int ib_num_ports = 0;
2287         int num_req_counters;
2288         int allocated;
2289         u32 counter_index;
2290         struct counter_index *new_counter_index = NULL;
2291
2292         pr_info_once("%s", mlx4_ib_version);
2293
2294         num_ports = 0;
2295         mlx4_foreach_ib_transport_port(i, dev)
2296                 num_ports++;
2297
2298         /* No point in registering a device with no ports... */
2299         if (num_ports == 0)
2300                 return NULL;
2301
2302         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2303         if (!ibdev) {
2304                 dev_err(&dev->persist->pdev->dev,
2305                         "Device struct alloc failed\n");
2306                 return NULL;
2307         }
2308
2309         iboe = &ibdev->iboe;
2310
2311         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2312                 goto err_dealloc;
2313
2314         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2315                 goto err_pd;
2316
2317         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2318                                  PAGE_SIZE);
2319         if (!ibdev->uar_map)
2320                 goto err_uar;
2321         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2322
2323         ibdev->dev = dev;
2324         ibdev->bond_next_port   = 0;
2325
2326         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2327         ibdev->ib_dev.owner             = THIS_MODULE;
2328         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2329         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2330         ibdev->num_ports                = num_ports;
2331         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2332                                                 1 : ibdev->num_ports;
2333         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2334         ibdev->ib_dev.dma_device        = &dev->persist->pdev->dev;
2335         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2336         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2337         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2338
2339         if (dev->caps.userspace_caps)
2340                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2341         else
2342                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2343
2344         ibdev->ib_dev.uverbs_cmd_mask   =
2345                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2346                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2347                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2348                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2349                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2350                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2351                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2352                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2353                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2354                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2355                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2356                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2357                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2358                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2359                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2360                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2361                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2362                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2363                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2364                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2365                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2366                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2367                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2368                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2369
2370         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2371         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2372         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2373         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2374         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2375         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2376         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2377         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2378         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2379         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2380         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2381         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2382         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2383         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2384         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2385         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2386         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2387         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2388         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2389         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2390         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2391         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2392         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2393         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2394         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2395         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2396         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2397         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2398         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2399         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2400         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2401         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2402         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2403         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2404         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2405         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2406         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2407         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2408         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2409         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2410         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2411         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2412         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2413
2414         if (!mlx4_is_slave(ibdev->dev)) {
2415                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2416                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2417                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2418                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2419         }
2420
2421         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2422             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2423                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2424                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2425
2426                 ibdev->ib_dev.uverbs_cmd_mask |=
2427                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2428                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2429         }
2430
2431         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2432                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2433                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2434                 ibdev->ib_dev.uverbs_cmd_mask |=
2435                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2436                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2437         }
2438
2439         if (check_flow_steering_support(dev)) {
2440                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2441                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2442                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2443
2444                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2445                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2446                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2447         }
2448
2449         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2450                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2451                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2452                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2453
2454         mlx4_ib_alloc_eqs(dev, ibdev);
2455
2456         spin_lock_init(&iboe->lock);
2457
2458         if (init_node_data(ibdev))
2459                 goto err_map;
2460
2461         for (i = 0; i < ibdev->num_ports; ++i) {
2462                 mutex_init(&ibdev->counters_table[i].mutex);
2463                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2464         }
2465
2466         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2467         for (i = 0; i < num_req_counters; ++i) {
2468                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2469                 allocated = 0;
2470                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2471                                                 IB_LINK_LAYER_ETHERNET) {
2472                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2473                         /* if failed to allocate a new counter, use default */
2474                         if (err)
2475                                 counter_index =
2476                                         mlx4_get_default_counter_index(dev,
2477                                                                        i + 1);
2478                         else
2479                                 allocated = 1;
2480                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2481                         counter_index = mlx4_get_default_counter_index(dev,
2482                                                                        i + 1);
2483                 }
2484                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2485                                             GFP_KERNEL);
2486                 if (!new_counter_index) {
2487                         if (allocated)
2488                                 mlx4_counter_free(ibdev->dev, counter_index);
2489                         goto err_counter;
2490                 }
2491                 new_counter_index->index = counter_index;
2492                 new_counter_index->allocated = allocated;
2493                 list_add_tail(&new_counter_index->list,
2494                               &ibdev->counters_table[i].counters_list);
2495                 ibdev->counters_table[i].default_counter = counter_index;
2496                 pr_info("counter index %d for port %d allocated %d\n",
2497                         counter_index, i + 1, allocated);
2498         }
2499         if (mlx4_is_bonded(dev))
2500                 for (i = 1; i < ibdev->num_ports ; ++i) {
2501                         new_counter_index =
2502                                         kmalloc(sizeof(struct counter_index),
2503                                                 GFP_KERNEL);
2504                         if (!new_counter_index)
2505                                 goto err_counter;
2506                         new_counter_index->index = counter_index;
2507                         new_counter_index->allocated = 0;
2508                         list_add_tail(&new_counter_index->list,
2509                                       &ibdev->counters_table[i].counters_list);
2510                         ibdev->counters_table[i].default_counter =
2511                                                                 counter_index;
2512                 }
2513
2514         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2515                 ib_num_ports++;
2516
2517         spin_lock_init(&ibdev->sm_lock);
2518         mutex_init(&ibdev->cap_mask_mutex);
2519         INIT_LIST_HEAD(&ibdev->qp_list);
2520         spin_lock_init(&ibdev->reset_flow_resource_lock);
2521
2522         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2523             ib_num_ports) {
2524                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2525                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2526                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2527                                             &ibdev->steer_qpn_base, 0);
2528                 if (err)
2529                         goto err_counter;
2530
2531                 ibdev->ib_uc_qpns_bitmap =
2532                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2533                                 sizeof(long),
2534                                 GFP_KERNEL);
2535                 if (!ibdev->ib_uc_qpns_bitmap) {
2536                         dev_err(&dev->persist->pdev->dev,
2537                                 "bit map alloc failed\n");
2538                         goto err_steer_qp_release;
2539                 }
2540
2541                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2542
2543                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2544                                 dev, ibdev->steer_qpn_base,
2545                                 ibdev->steer_qpn_base +
2546                                 ibdev->steer_qpn_count - 1);
2547                 if (err)
2548                         goto err_steer_free_bitmap;
2549         }
2550
2551         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2552                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2553
2554         if (ib_register_device(&ibdev->ib_dev, NULL))
2555                 goto err_steer_free_bitmap;
2556
2557         if (mlx4_ib_mad_init(ibdev))
2558                 goto err_reg;
2559
2560         if (mlx4_ib_init_sriov(ibdev))
2561                 goto err_mad;
2562
2563         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE ||
2564             dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2565                 if (!iboe->nb.notifier_call) {
2566                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2567                         err = register_netdevice_notifier(&iboe->nb);
2568                         if (err) {
2569                                 iboe->nb.notifier_call = NULL;
2570                                 goto err_notif;
2571                         }
2572                 }
2573                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2574                         err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2575                         if (err) {
2576                                 goto err_notif;
2577                         }
2578                 }
2579         }
2580
2581         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2582                 if (device_create_file(&ibdev->ib_dev.dev,
2583                                        mlx4_class_attributes[j]))
2584                         goto err_notif;
2585         }
2586
2587         ibdev->ib_active = true;
2588
2589         if (mlx4_is_mfunc(ibdev->dev))
2590                 init_pkeys(ibdev);
2591
2592         /* create paravirt contexts for any VFs which are active */
2593         if (mlx4_is_master(ibdev->dev)) {
2594                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2595                         if (j == mlx4_master_func_num(ibdev->dev))
2596                                 continue;
2597                         if (mlx4_is_slave_active(ibdev->dev, j))
2598                                 do_slave_init(ibdev, j, 1);
2599                 }
2600         }
2601         return ibdev;
2602
2603 err_notif:
2604         if (ibdev->iboe.nb.notifier_call) {
2605                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2606                         pr_warn("failure unregistering notifier\n");
2607                 ibdev->iboe.nb.notifier_call = NULL;
2608         }
2609         flush_workqueue(wq);
2610
2611         mlx4_ib_close_sriov(ibdev);
2612
2613 err_mad:
2614         mlx4_ib_mad_cleanup(ibdev);
2615
2616 err_reg:
2617         ib_unregister_device(&ibdev->ib_dev);
2618
2619 err_steer_free_bitmap:
2620         kfree(ibdev->ib_uc_qpns_bitmap);
2621
2622 err_steer_qp_release:
2623         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2624                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2625                                       ibdev->steer_qpn_count);
2626 err_counter:
2627         for (i = 0; i < ibdev->num_ports; ++i)
2628                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2629
2630 err_map:
2631         iounmap(ibdev->uar_map);
2632
2633 err_uar:
2634         mlx4_uar_free(dev, &ibdev->priv_uar);
2635
2636 err_pd:
2637         mlx4_pd_free(dev, ibdev->priv_pdn);
2638
2639 err_dealloc:
2640         ib_dealloc_device(&ibdev->ib_dev);
2641
2642         return NULL;
2643 }
2644
2645 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2646 {
2647         int offset;
2648
2649         WARN_ON(!dev->ib_uc_qpns_bitmap);
2650
2651         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2652                                          dev->steer_qpn_count,
2653                                          get_count_order(count));
2654         if (offset < 0)
2655                 return offset;
2656
2657         *qpn = dev->steer_qpn_base + offset;
2658         return 0;
2659 }
2660
2661 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2662 {
2663         if (!qpn ||
2664             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2665                 return;
2666
2667         BUG_ON(qpn < dev->steer_qpn_base);
2668
2669         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2670                               qpn - dev->steer_qpn_base,
2671                               get_count_order(count));
2672 }
2673
2674 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2675                          int is_attach)
2676 {
2677         int err;
2678         size_t flow_size;
2679         struct ib_flow_attr *flow = NULL;
2680         struct ib_flow_spec_ib *ib_spec;
2681
2682         if (is_attach) {
2683                 flow_size = sizeof(struct ib_flow_attr) +
2684                             sizeof(struct ib_flow_spec_ib);
2685                 flow = kzalloc(flow_size, GFP_KERNEL);
2686                 if (!flow)
2687                         return -ENOMEM;
2688                 flow->port = mqp->port;
2689                 flow->num_of_specs = 1;
2690                 flow->size = flow_size;
2691                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2692                 ib_spec->type = IB_FLOW_SPEC_IB;
2693                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2694                 /* Add an empty rule for IB L2 */
2695                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2696
2697                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2698                                             IB_FLOW_DOMAIN_NIC,
2699                                             MLX4_FS_REGULAR,
2700                                             &mqp->reg_id);
2701         } else {
2702                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2703         }
2704         kfree(flow);
2705         return err;
2706 }
2707
2708 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2709 {
2710         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2711         int p;
2712
2713         ibdev->ib_active = false;
2714         flush_workqueue(wq);
2715
2716         mlx4_ib_close_sriov(ibdev);
2717         mlx4_ib_mad_cleanup(ibdev);
2718         ib_unregister_device(&ibdev->ib_dev);
2719         if (ibdev->iboe.nb.notifier_call) {
2720                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2721                         pr_warn("failure unregistering notifier\n");
2722                 ibdev->iboe.nb.notifier_call = NULL;
2723         }
2724
2725         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2726                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2727                                       ibdev->steer_qpn_count);
2728                 kfree(ibdev->ib_uc_qpns_bitmap);
2729         }
2730
2731         iounmap(ibdev->uar_map);
2732         for (p = 0; p < ibdev->num_ports; ++p)
2733                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
2734
2735         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2736                 mlx4_CLOSE_PORT(dev, p);
2737
2738         mlx4_ib_free_eqs(dev, ibdev);
2739
2740         mlx4_uar_free(dev, &ibdev->priv_uar);
2741         mlx4_pd_free(dev, ibdev->priv_pdn);
2742         ib_dealloc_device(&ibdev->ib_dev);
2743 }
2744
2745 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2746 {
2747         struct mlx4_ib_demux_work **dm = NULL;
2748         struct mlx4_dev *dev = ibdev->dev;
2749         int i;
2750         unsigned long flags;
2751         struct mlx4_active_ports actv_ports;
2752         unsigned int ports;
2753         unsigned int first_port;
2754
2755         if (!mlx4_is_master(dev))
2756                 return;
2757
2758         actv_ports = mlx4_get_active_ports(dev, slave);
2759         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2760         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2761
2762         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
2763         if (!dm) {
2764                 pr_err("failed to allocate memory for tunneling qp update\n");
2765                 return;
2766         }
2767
2768         for (i = 0; i < ports; i++) {
2769                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
2770                 if (!dm[i]) {
2771                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
2772                         while (--i >= 0)
2773                                 kfree(dm[i]);
2774                         goto out;
2775                 }
2776                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
2777                 dm[i]->port = first_port + i + 1;
2778                 dm[i]->slave = slave;
2779                 dm[i]->do_init = do_init;
2780                 dm[i]->dev = ibdev;
2781         }
2782         /* initialize or tear down tunnel QPs for the slave */
2783         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
2784         if (!ibdev->sriov.is_going_down) {
2785                 for (i = 0; i < ports; i++)
2786                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
2787                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2788         } else {
2789                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2790                 for (i = 0; i < ports; i++)
2791                         kfree(dm[i]);
2792         }
2793 out:
2794         kfree(dm);
2795         return;
2796 }
2797
2798 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
2799 {
2800         struct mlx4_ib_qp *mqp;
2801         unsigned long flags_qp;
2802         unsigned long flags_cq;
2803         struct mlx4_ib_cq *send_mcq, *recv_mcq;
2804         struct list_head    cq_notify_list;
2805         struct mlx4_cq *mcq;
2806         unsigned long flags;
2807
2808         pr_warn("mlx4_ib_handle_catas_error was started\n");
2809         INIT_LIST_HEAD(&cq_notify_list);
2810
2811         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
2812         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
2813
2814         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
2815                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
2816                 if (mqp->sq.tail != mqp->sq.head) {
2817                         send_mcq = to_mcq(mqp->ibqp.send_cq);
2818                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
2819                         if (send_mcq->mcq.comp &&
2820                             mqp->ibqp.send_cq->comp_handler) {
2821                                 if (!send_mcq->mcq.reset_notify_added) {
2822                                         send_mcq->mcq.reset_notify_added = 1;
2823                                         list_add_tail(&send_mcq->mcq.reset_notify,
2824                                                       &cq_notify_list);
2825                                 }
2826                         }
2827                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
2828                 }
2829                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
2830                 /* Now, handle the QP's receive queue */
2831                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
2832                 /* no handling is needed for SRQ */
2833                 if (!mqp->ibqp.srq) {
2834                         if (mqp->rq.tail != mqp->rq.head) {
2835                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
2836                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
2837                                 if (recv_mcq->mcq.comp &&
2838                                     mqp->ibqp.recv_cq->comp_handler) {
2839                                         if (!recv_mcq->mcq.reset_notify_added) {
2840                                                 recv_mcq->mcq.reset_notify_added = 1;
2841                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
2842                                                               &cq_notify_list);
2843                                         }
2844                                 }
2845                                 spin_unlock_irqrestore(&recv_mcq->lock,
2846                                                        flags_cq);
2847                         }
2848                 }
2849                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
2850         }
2851
2852         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
2853                 mcq->comp(mcq);
2854         }
2855         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
2856         pr_warn("mlx4_ib_handle_catas_error ended\n");
2857 }
2858
2859 static void handle_bonded_port_state_event(struct work_struct *work)
2860 {
2861         struct ib_event_work *ew =
2862                 container_of(work, struct ib_event_work, work);
2863         struct mlx4_ib_dev *ibdev = ew->ib_dev;
2864         enum ib_port_state bonded_port_state = IB_PORT_NOP;
2865         int i;
2866         struct ib_event ibev;
2867
2868         kfree(ew);
2869         spin_lock_bh(&ibdev->iboe.lock);
2870         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
2871                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
2872                 enum ib_port_state curr_port_state;
2873
2874                 if (!curr_netdev)
2875                         continue;
2876
2877                 curr_port_state =
2878                         (netif_running(curr_netdev) &&
2879                          netif_carrier_ok(curr_netdev)) ?
2880                         IB_PORT_ACTIVE : IB_PORT_DOWN;
2881
2882                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
2883                         curr_port_state : IB_PORT_ACTIVE;
2884         }
2885         spin_unlock_bh(&ibdev->iboe.lock);
2886
2887         ibev.device = &ibdev->ib_dev;
2888         ibev.element.port_num = 1;
2889         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
2890                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2891
2892         ib_dispatch_event(&ibev);
2893 }
2894
2895 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2896                           enum mlx4_dev_event event, unsigned long param)
2897 {
2898         struct ib_event ibev;
2899         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2900         struct mlx4_eqe *eqe = NULL;
2901         struct ib_event_work *ew;
2902         int p = 0;
2903
2904         if (mlx4_is_bonded(dev) &&
2905             ((event == MLX4_DEV_EVENT_PORT_UP) ||
2906             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
2907                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
2908                 if (!ew)
2909                         return;
2910                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
2911                 ew->ib_dev = ibdev;
2912                 queue_work(wq, &ew->work);
2913                 return;
2914         }
2915
2916         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
2917                 eqe = (struct mlx4_eqe *)param;
2918         else
2919                 p = (int) param;
2920
2921         switch (event) {
2922         case MLX4_DEV_EVENT_PORT_UP:
2923                 if (p > ibdev->num_ports)
2924                         return;
2925                 if (mlx4_is_master(dev) &&
2926                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
2927                         IB_LINK_LAYER_INFINIBAND) {
2928                         mlx4_ib_invalidate_all_guid_record(ibdev, p);
2929                 }
2930                 ibev.event = IB_EVENT_PORT_ACTIVE;
2931                 break;
2932
2933         case MLX4_DEV_EVENT_PORT_DOWN:
2934                 if (p > ibdev->num_ports)
2935                         return;
2936                 ibev.event = IB_EVENT_PORT_ERR;
2937                 break;
2938
2939         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2940                 ibdev->ib_active = false;
2941                 ibev.event = IB_EVENT_DEVICE_FATAL;
2942                 mlx4_ib_handle_catas_error(ibdev);
2943                 break;
2944
2945         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
2946                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
2947                 if (!ew) {
2948                         pr_err("failed to allocate memory for events work\n");
2949                         break;
2950                 }
2951
2952                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
2953                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
2954                 ew->ib_dev = ibdev;
2955                 /* need to queue only for port owner, which uses GEN_EQE */
2956                 if (mlx4_is_master(dev))
2957                         queue_work(wq, &ew->work);
2958                 else
2959                         handle_port_mgmt_change_event(&ew->work);
2960                 return;
2961
2962         case MLX4_DEV_EVENT_SLAVE_INIT:
2963                 /* here, p is the slave id */
2964                 do_slave_init(ibdev, p, 1);
2965                 if (mlx4_is_master(dev)) {
2966                         int i;
2967
2968                         for (i = 1; i <= ibdev->num_ports; i++) {
2969                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
2970                                         == IB_LINK_LAYER_INFINIBAND)
2971                                         mlx4_ib_slave_alias_guid_event(ibdev,
2972                                                                        p, i,
2973                                                                        1);
2974                         }
2975                 }
2976                 return;
2977
2978         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
2979                 if (mlx4_is_master(dev)) {
2980                         int i;
2981
2982                         for (i = 1; i <= ibdev->num_ports; i++) {
2983                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
2984                                         == IB_LINK_LAYER_INFINIBAND)
2985                                         mlx4_ib_slave_alias_guid_event(ibdev,
2986                                                                        p, i,
2987                                                                        0);
2988                         }
2989                 }
2990                 /* here, p is the slave id */
2991                 do_slave_init(ibdev, p, 0);
2992                 return;
2993
2994         default:
2995                 return;
2996         }
2997
2998         ibev.device           = ibdev_ptr;
2999         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3000
3001         ib_dispatch_event(&ibev);
3002 }
3003
3004 static struct mlx4_interface mlx4_ib_interface = {
3005         .add            = mlx4_ib_add,
3006         .remove         = mlx4_ib_remove,
3007         .event          = mlx4_ib_event,
3008         .protocol       = MLX4_PROT_IB_IPV6,
3009         .flags          = MLX4_INTFF_BONDING
3010 };
3011
3012 static int __init mlx4_ib_init(void)
3013 {
3014         int err;
3015
3016         wq = create_singlethread_workqueue("mlx4_ib");
3017         if (!wq)
3018                 return -ENOMEM;
3019
3020         err = mlx4_ib_mcg_init();
3021         if (err)
3022                 goto clean_wq;
3023
3024         err = mlx4_register_interface(&mlx4_ib_interface);
3025         if (err)
3026                 goto clean_mcg;
3027
3028         return 0;
3029
3030 clean_mcg:
3031         mlx4_ib_mcg_destroy();
3032
3033 clean_wq:
3034         destroy_workqueue(wq);
3035         return err;
3036 }
3037
3038 static void __exit mlx4_ib_cleanup(void)
3039 {
3040         mlx4_unregister_interface(&mlx4_ib_interface);
3041         mlx4_ib_mcg_destroy();
3042         destroy_workqueue(wq);
3043 }
3044
3045 module_init(mlx4_ib_init);
3046 module_exit(mlx4_ib_cleanup);