drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <net/ipv6.h>
  43 #include <net/addrconf.h>
  44 #include <net/devlink.h>
  45
  46 #include <rdma/ib_smi.h>
  47 #include <rdma/ib_user_verbs.h>
  48 #include <rdma/ib_addr.h>
  49 #include <rdma/ib_cache.h>
  50
  51 #include <net/bonding.h>
  52
  53 #include <linux/mlx4/driver.h>
  54 #include <linux/mlx4/cmd.h>
  55 #include <linux/mlx4/qp.h>
  56
  57 #include "mlx4_ib.h"
  58 #include <rdma/mlx4-abi.h>
  59
  60 #define DRV_NAME        MLX4_IB_DRV_NAME
  61 #define DRV_VERSION     "2.2-1"
  62 #define DRV_RELDATE     "Feb 2014"
  63
  64 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  65 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  66 #define MLX4_IB_CARD_REV_A0   0xA0
  67
  68 MODULE_AUTHOR("Roland Dreier");
  69 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  70 MODULE_LICENSE("Dual BSD/GPL");
  71 MODULE_VERSION(DRV_VERSION);
  72
  73 int mlx4_ib_sm_guid_assign = 0;
  74 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  75 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  76
  77 static const char mlx4_ib_version[] =
  78         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  79         DRV_VERSION " (" DRV_RELDATE ")\n";
  80
  81 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  82
  83 static struct workqueue_struct *wq;
  84
  85 static void init_query_mad(struct ib_smp *mad)
  86 {
  87         mad->base_version  = 1;
  88         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  89         mad->class_version = 1;
  90         mad->method        = IB_MGMT_METHOD_GET;
  91 }
  92
  93 static int check_flow_steering_support(struct mlx4_dev *dev)
  94 {
  95         int eth_num_ports = 0;
  96         int ib_num_ports = 0;
  97
  98         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
  99
 100         if (dmfs) {
 101                 int i;
 102                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 103                         eth_num_ports++;
 104                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 105                         ib_num_ports++;
 106                 dmfs &= (!ib_num_ports ||
 107                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 108                         (!eth_num_ports ||
 109                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 110                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 111                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 112                         dmfs = 0;
 113                 }
 114         }
 115         return dmfs;
 116 }
 117
 118 static int num_ib_ports(struct mlx4_dev *dev)
 119 {
 120         int ib_ports = 0;
 121         int i;
 122
 123         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 124                 ib_ports++;
 125
 126         return ib_ports;
 127 }
 128
 129 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 130 {
 131         struct mlx4_ib_dev *ibdev = to_mdev(device);
 132         struct net_device *dev;
 133
 134         rcu_read_lock();
 135         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 136
 137         if (dev) {
 138                 if (mlx4_is_bonded(ibdev->dev)) {
 139                         struct net_device *upper = NULL;
 140
 141                         upper = netdev_master_upper_dev_get_rcu(dev);
 142                         if (upper) {
 143                                 struct net_device *active;
 144
 145                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 146                                 if (active)
 147                                         dev = active;
 148                         }
 149                 }
 150         }
 151         if (dev)
 152                 dev_hold(dev);
 153
 154         rcu_read_unlock();
 155         return dev;
 156 }
 157
 158 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 159                                   struct mlx4_ib_dev *ibdev,
 160                                   u8 port_num)
 161 {
 162         struct mlx4_cmd_mailbox *mailbox;
 163         int err;
 164         struct mlx4_dev *dev = ibdev->dev;
 165         int i;
 166         union ib_gid *gid_tbl;
 167
 168         mailbox = mlx4_alloc_cmd_mailbox(dev);
 169         if (IS_ERR(mailbox))
 170                 return -ENOMEM;
 171
 172         gid_tbl = mailbox->buf;
 173
 174         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 175                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 176
 177         err = mlx4_cmd(dev, mailbox->dma,
 178                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 179                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 180                        MLX4_CMD_WRAPPED);
 181         if (mlx4_is_bonded(dev))
 182                 err += mlx4_cmd(dev, mailbox->dma,
 183                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 184                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 185                                 MLX4_CMD_WRAPPED);
 186
 187         mlx4_free_cmd_mailbox(dev, mailbox);
 188         return err;
 189 }
 190
 191 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 192                                      struct mlx4_ib_dev *ibdev,
 193                                      u8 port_num)
 194 {
 195         struct mlx4_cmd_mailbox *mailbox;
 196         int err;
 197         struct mlx4_dev *dev = ibdev->dev;
 198         int i;
 199         struct {
 200                 union ib_gid    gid;
 201                 __be32          rsrvd1[2];
 202                 __be16          rsrvd2;
 203                 u8              type;
 204                 u8              version;
 205                 __be32          rsrvd3;
 206         } *gid_tbl;
 207
 208         mailbox = mlx4_alloc_cmd_mailbox(dev);
 209         if (IS_ERR(mailbox))
 210                 return -ENOMEM;
 211
 212         gid_tbl = mailbox->buf;
 213         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 214                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 215                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 216                         gid_tbl[i].version = 2;
 217                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 218                                 gid_tbl[i].type = 1;
 219                         else
 220                                 memset(&gid_tbl[i].gid, 0, 12);
 221                 }
 222         }
 223
 224         err = mlx4_cmd(dev, mailbox->dma,
 225                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 226                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 227                        MLX4_CMD_WRAPPED);
 228         if (mlx4_is_bonded(dev))
 229                 err += mlx4_cmd(dev, mailbox->dma,
 230                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 231                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 232                                 MLX4_CMD_WRAPPED);
 233
 234         mlx4_free_cmd_mailbox(dev, mailbox);
 235         return err;
 236 }
 237
 238 static int mlx4_ib_update_gids(struct gid_entry *gids,
 239                                struct mlx4_ib_dev *ibdev,
 240                                u8 port_num)
 241 {
 242         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 243                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 244
 245         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 246 }
 247
 248 static int mlx4_ib_add_gid(struct ib_device *device,
 249                            u8 port_num,
 250                            unsigned int index,
 251                            const union ib_gid *gid,
 252                            const struct ib_gid_attr *attr,
 253                            void **context)
 254 {
 255         struct mlx4_ib_dev *ibdev = to_mdev(device);
 256         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 257         struct mlx4_port_gid_table   *port_gid_table;
 258         int free = -1, found = -1;
 259         int ret = 0;
 260         int hw_update = 0;
 261         int i;
 262         struct gid_entry *gids = NULL;
 263
 264         if (!rdma_cap_roce_gid_table(device, port_num))
 265                 return -EINVAL;
 266
 267         if (port_num > MLX4_MAX_PORTS)
 268                 return -EINVAL;
 269
 270         if (!context)
 271                 return -EINVAL;
 272
 273         port_gid_table = &iboe->gids[port_num - 1];
 274         spin_lock_bh(&iboe->lock);
 275         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 276                 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
 277                     (port_gid_table->gids[i].gid_type == attr->gid_type))  {
 278                         found = i;
 279                         break;
 280                 }
 281                 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
 282                         free = i; /* HW has space */
 283         }
 284
 285         if (found < 0) {
 286                 if (free < 0) {
 287                         ret = -ENOSPC;
 288                 } else {
 289                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 290                         if (!port_gid_table->gids[free].ctx) {
 291                                 ret = -ENOMEM;
 292                         } else {
 293                                 *context = port_gid_table->gids[free].ctx;
 294                                 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
 295                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 296                                 port_gid_table->gids[free].ctx->real_index = free;
 297                                 port_gid_table->gids[free].ctx->refcount = 1;
 298                                 hw_update = 1;
 299                         }
 300                 }
 301         } else {
 302                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 303                 *context = ctx;
 304                 ctx->refcount++;
 305         }
 306         if (!ret && hw_update) {
 307                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 308                 if (!gids) {
 309                         ret = -ENOMEM;
 310                 } else {
 311                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 312                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 313                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 314                         }
 315                 }
 316         }
 317         spin_unlock_bh(&iboe->lock);
 318
 319         if (!ret && hw_update) {
 320                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 321                 kfree(gids);
 322         }
 323
 324         return ret;
 325 }
 326
 327 static int mlx4_ib_del_gid(struct ib_device *device,
 328                            u8 port_num,
 329                            unsigned int index,
 330                            void **context)
 331 {
 332         struct gid_cache_context *ctx = *context;
 333         struct mlx4_ib_dev *ibdev = to_mdev(device);
 334         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 335         struct mlx4_port_gid_table   *port_gid_table;
 336         int ret = 0;
 337         int hw_update = 0;
 338         struct gid_entry *gids = NULL;
 339
 340         if (!rdma_cap_roce_gid_table(device, port_num))
 341                 return -EINVAL;
 342
 343         if (port_num > MLX4_MAX_PORTS)
 344                 return -EINVAL;
 345
 346         port_gid_table = &iboe->gids[port_num - 1];
 347         spin_lock_bh(&iboe->lock);
 348         if (ctx) {
 349                 ctx->refcount--;
 350                 if (!ctx->refcount) {
 351                         unsigned int real_index = ctx->real_index;
 352
 353                         memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
 354                         kfree(port_gid_table->gids[real_index].ctx);
 355                         port_gid_table->gids[real_index].ctx = NULL;
 356                         hw_update = 1;
 357                 }
 358         }
 359         if (!ret && hw_update) {
 360                 int i;
 361
 362                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 363                 if (!gids) {
 364                         ret = -ENOMEM;
 365                 } else {
 366                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
 367                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 368                 }
 369         }
 370         spin_unlock_bh(&iboe->lock);
 371
 372         if (!ret && hw_update) {
 373                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 374                 kfree(gids);
 375         }
 376         return ret;
 377 }
 378
 379 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 380                                     u8 port_num, int index)
 381 {
 382         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 383         struct gid_cache_context *ctx = NULL;
 384         union ib_gid gid;
 385         struct mlx4_port_gid_table   *port_gid_table;
 386         int real_index = -EINVAL;
 387         int i;
 388         int ret;
 389         unsigned long flags;
 390         struct ib_gid_attr attr;
 391
 392         if (port_num > MLX4_MAX_PORTS)
 393                 return -EINVAL;
 394
 395         if (mlx4_is_bonded(ibdev->dev))
 396                 port_num = 1;
 397
 398         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 399                 return index;
 400
 401         ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
 402         if (ret)
 403                 return ret;
 404
 405         if (attr.ndev)
 406                 dev_put(attr.ndev);
 407
 408         if (!memcmp(&gid, &zgid, sizeof(gid)))
 409                 return -EINVAL;
 410
 411         spin_lock_irqsave(&iboe->lock, flags);
 412         port_gid_table = &iboe->gids[port_num - 1];
 413
 414         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 415                 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
 416                     attr.gid_type == port_gid_table->gids[i].gid_type) {
 417                         ctx = port_gid_table->gids[i].ctx;
 418                         break;
 419                 }
 420         if (ctx)
 421                 real_index = ctx->real_index;
 422         spin_unlock_irqrestore(&iboe->lock, flags);
 423         return real_index;
 424 }
 425
 426 static int mlx4_ib_query_device(struct ib_device *ibdev,
 427                                 struct ib_device_attr *props,
 428                                 struct ib_udata *uhw)
 429 {
 430         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 431         struct ib_smp *in_mad  = NULL;
 432         struct ib_smp *out_mad = NULL;
 433         int err = -ENOMEM;
 434         int have_ib_ports;
 435         struct mlx4_uverbs_ex_query_device cmd;
 436         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 437         struct mlx4_clock_params clock_params;
 438
 439         if (uhw->inlen) {
 440                 if (uhw->inlen < sizeof(cmd))
 441                         return -EINVAL;
 442
 443                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 444                 if (err)
 445                         return err;
 446
 447                 if (cmd.comp_mask)
 448                         return -EINVAL;
 449
 450                 if (cmd.reserved)
 451                         return -EINVAL;
 452         }
 453
 454         resp.response_length = offsetof(typeof(resp), response_length) +
 455                 sizeof(resp.response_length);
 456         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 457         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 458         if (!in_mad || !out_mad)
 459                 goto out;
 460
 461         init_query_mad(in_mad);
 462         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 463
 464         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 465                            1, NULL, NULL, in_mad, out_mad);
 466         if (err)
 467                 goto out;
 468
 469         memset(props, 0, sizeof *props);
 470
 471         have_ib_ports = num_ib_ports(dev->dev);
 472
 473         props->fw_ver = dev->dev->caps.fw_ver;
 474         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 475                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 476                 IB_DEVICE_SYS_IMAGE_GUID                |
 477                 IB_DEVICE_RC_RNR_NAK_GEN                |
 478                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 479         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 480                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 481         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 482                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 483         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 484                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 485         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 486                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 487         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 488                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 489         if (dev->dev->caps.max_gso_sz &&
 490             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 491             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 492                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 493         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 494                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 495         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 496             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 497             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 498                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 499         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 500                 props->device_cap_flags |= IB_DEVICE_XRC;
 501         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 502                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 503         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 504                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 505                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 506                 else
 507                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 508         }
 509         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 510                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 511
 512         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 513
 514         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 515                 0xffffff;
 516         props->vendor_part_id      = dev->dev->persist->pdev->device;
 517         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 518         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 519
 520         props->max_mr_size         = ~0ull;
 521         props->page_size_cap       = dev->dev->caps.page_size_cap;
 522         props->max_qp              = dev->dev->quotas.qp;
 523         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 524         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 525                                          dev->dev->caps.max_rq_sg);
 526         props->max_sge_rd          = MLX4_MAX_SGE_RD;
 527         props->max_cq              = dev->dev->quotas.cq;
 528         props->max_cqe             = dev->dev->caps.max_cqes;
 529         props->max_mr              = dev->dev->quotas.mpt;
 530         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 531         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 532         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 533         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 534         props->max_srq             = dev->dev->quotas.srq;
 535         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 536         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 537         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 538         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 539         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 540                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 541         props->masked_atomic_cap   = props->atomic_cap;
 542         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 543         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 544         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 545         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 546                                            props->max_mcast_grp;
 547         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 548         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 549         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 550         props->max_ah = INT_MAX;
 551
 552         if (!mlx4_is_slave(dev->dev))
 553                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 554
 555         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 556                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 557                 if (!err && !mlx4_is_slave(dev->dev)) {
 558                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 559                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 560                 }
 561         }
 562
 563         if (uhw->outlen) {
 564                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 565                 if (err)
 566                         goto out;
 567         }
 568 out:
 569         kfree(in_mad);
 570         kfree(out_mad);
 571
 572         return err;
 573 }
 574
 575 static enum rdma_link_layer
 576 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 577 {
 578         struct mlx4_dev *dev = to_mdev(device)->dev;
 579
 580         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 581                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 582 }
 583
 584 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 585                               struct ib_port_attr *props, int netw_view)
 586 {
 587         struct ib_smp *in_mad  = NULL;
 588         struct ib_smp *out_mad = NULL;
 589         int ext_active_speed;
 590         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 591         int err = -ENOMEM;
 592
 593         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 594         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 595         if (!in_mad || !out_mad)
 596                 goto out;
 597
 598         init_query_mad(in_mad);
 599         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 600         in_mad->attr_mod = cpu_to_be32(port);
 601
 602         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 603                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 604
 605         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 606                                 in_mad, out_mad);
 607         if (err)
 608                 goto out;
 609
 610
 611         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 612         props->lmc              = out_mad->data[34] & 0x7;
 613         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 614         props->sm_sl            = out_mad->data[36] & 0xf;
 615         props->state            = out_mad->data[32] & 0xf;
 616         props->phys_state       = out_mad->data[33] >> 4;
 617         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 618         if (netw_view)
 619                 props->gid_tbl_len = out_mad->data[50];
 620         else
 621                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 622         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 623         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 624         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 625         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 626         props->active_width     = out_mad->data[31] & 0xf;
 627         props->active_speed     = out_mad->data[35] >> 4;
 628         props->max_mtu          = out_mad->data[41] & 0xf;
 629         props->active_mtu       = out_mad->data[36] >> 4;
 630         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 631         props->max_vl_num       = out_mad->data[37] >> 4;
 632         props->init_type_reply  = out_mad->data[41] >> 4;
 633
 634         /* Check if extended speeds (EDR/FDR/...) are supported */
 635         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 636                 ext_active_speed = out_mad->data[62] >> 4;
 637
 638                 switch (ext_active_speed) {
 639                 case 1:
 640                         props->active_speed = IB_SPEED_FDR;
 641                         break;
 642                 case 2:
 643                         props->active_speed = IB_SPEED_EDR;
 644                         break;
 645                 }
 646         }
 647
 648         /* If reported active speed is QDR, check if is FDR-10 */
 649         if (props->active_speed == IB_SPEED_QDR) {
 650                 init_query_mad(in_mad);
 651                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 652                 in_mad->attr_mod = cpu_to_be32(port);
 653
 654                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 655                                    NULL, NULL, in_mad, out_mad);
 656                 if (err)
 657                         goto out;
 658
 659                 /* Checking LinkSpeedActive for FDR-10 */
 660                 if (out_mad->data[15] & 0x1)
 661                         props->active_speed = IB_SPEED_FDR10;
 662         }
 663
 664         /* Avoid wrong speed value returned by FW if the IB link is down. */
 665         if (props->state == IB_PORT_DOWN)
 666                  props->active_speed = IB_SPEED_SDR;
 667
 668 out:
 669         kfree(in_mad);
 670         kfree(out_mad);
 671         return err;
 672 }
 673
 674 static u8 state_to_phys_state(enum ib_port_state state)
 675 {
 676         return state == IB_PORT_ACTIVE ? 5 : 3;
 677 }
 678
 679 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 680                                struct ib_port_attr *props, int netw_view)
 681 {
 682
 683         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 684         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 685         struct net_device *ndev;
 686         enum ib_mtu tmp;
 687         struct mlx4_cmd_mailbox *mailbox;
 688         int err = 0;
 689         int is_bonded = mlx4_is_bonded(mdev->dev);
 690
 691         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 692         if (IS_ERR(mailbox))
 693                 return PTR_ERR(mailbox);
 694
 695         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 696                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 697                            MLX4_CMD_WRAPPED);
 698         if (err)
 699                 goto out;
 700
 701         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ||
 702                                    (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 703                                            IB_WIDTH_4X : IB_WIDTH_1X;
 704         props->active_speed     =  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 705                                            IB_SPEED_FDR : IB_SPEED_QDR;
 706         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 707         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 708         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 709         props->pkey_tbl_len     = 1;
 710         props->max_mtu          = IB_MTU_4096;
 711         props->max_vl_num       = 2;
 712         props->state            = IB_PORT_DOWN;
 713         props->phys_state       = state_to_phys_state(props->state);
 714         props->active_mtu       = IB_MTU_256;
 715         spin_lock_bh(&iboe->lock);
 716         ndev = iboe->netdevs[port - 1];
 717         if (ndev && is_bonded) {
 718                 rcu_read_lock(); /* required to get upper dev */
 719                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 720                 rcu_read_unlock();
 721         }
 722         if (!ndev)
 723                 goto out_unlock;
 724
 725         tmp = iboe_get_mtu(ndev->mtu);
 726         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 727
 728         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 729                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 730         props->phys_state       = state_to_phys_state(props->state);
 731 out_unlock:
 732         spin_unlock_bh(&iboe->lock);
 733 out:
 734         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 735         return err;
 736 }
 737
 738 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 739                          struct ib_port_attr *props, int netw_view)
 740 {
 741         int err;
 742
 743         memset(props, 0, sizeof *props);
 744
 745         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 746                 ib_link_query_port(ibdev, port, props, netw_view) :
 747                                 eth_link_query_port(ibdev, port, props, netw_view);
 748
 749         return err;
 750 }
 751
 752 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 753                               struct ib_port_attr *props)
 754 {
 755         /* returns host view */
 756         return __mlx4_ib_query_port(ibdev, port, props, 0);
 757 }
 758
 759 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 760                         union ib_gid *gid, int netw_view)
 761 {
 762         struct ib_smp *in_mad  = NULL;
 763         struct ib_smp *out_mad = NULL;
 764         int err = -ENOMEM;
 765         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 766         int clear = 0;
 767         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 768
 769         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 770         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 771         if (!in_mad || !out_mad)
 772                 goto out;
 773
 774         init_query_mad(in_mad);
 775         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 776         in_mad->attr_mod = cpu_to_be32(port);
 777
 778         if (mlx4_is_mfunc(dev->dev) && netw_view)
 779                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 780
 781         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 782         if (err)
 783                 goto out;
 784
 785         memcpy(gid->raw, out_mad->data + 8, 8);
 786
 787         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 788                 if (index) {
 789                         /* For any index > 0, return the null guid */
 790                         err = 0;
 791                         clear = 1;
 792                         goto out;
 793                 }
 794         }
 795
 796         init_query_mad(in_mad);
 797         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 798         in_mad->attr_mod = cpu_to_be32(index / 8);
 799
 800         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 801                            NULL, NULL, in_mad, out_mad);
 802         if (err)
 803                 goto out;
 804
 805         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 806
 807 out:
 808         if (clear)
 809                 memset(gid->raw + 8, 0, 8);
 810         kfree(in_mad);
 811         kfree(out_mad);
 812         return err;
 813 }
 814
 815 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 816                              union ib_gid *gid)
 817 {
 818         int ret;
 819
 820         if (rdma_protocol_ib(ibdev, port))
 821                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 822
 823         if (!rdma_protocol_roce(ibdev, port))
 824                 return -ENODEV;
 825
 826         if (!rdma_cap_roce_gid_table(ibdev, port))
 827                 return -ENODEV;
 828
 829         ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
 830         if (ret == -EAGAIN) {
 831                 memcpy(gid, &zgid, sizeof(*gid));
 832                 return 0;
 833         }
 834
 835         return ret;
 836 }
 837
 838 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
 839 {
 840         union sl2vl_tbl_to_u64 sl2vl64;
 841         struct ib_smp *in_mad  = NULL;
 842         struct ib_smp *out_mad = NULL;
 843         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 844         int err = -ENOMEM;
 845         int jj;
 846
 847         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 848                 *sl2vl_tbl = 0;
 849                 return 0;
 850         }
 851
 852         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 853         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 854         if (!in_mad || !out_mad)
 855                 goto out;
 856
 857         init_query_mad(in_mad);
 858         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 859         in_mad->attr_mod = 0;
 860
 861         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 862                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 863
 864         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 865                            in_mad, out_mad);
 866         if (err)
 867                 goto out;
 868
 869         for (jj = 0; jj < 8; jj++)
 870                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 871         *sl2vl_tbl = sl2vl64.sl64;
 872
 873 out:
 874         kfree(in_mad);
 875         kfree(out_mad);
 876         return err;
 877 }
 878
 879 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 880 {
 881         u64 sl2vl;
 882         int i;
 883         int err;
 884
 885         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 886                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 887                         continue;
 888                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 889                 if (err) {
 890                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 891                                i, err);
 892                         sl2vl = 0;
 893                 }
 894                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 895         }
 896 }
 897
 898 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 899                          u16 *pkey, int netw_view)
 900 {
 901         struct ib_smp *in_mad  = NULL;
 902         struct ib_smp *out_mad = NULL;
 903         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 904         int err = -ENOMEM;
 905
 906         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 907         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 908         if (!in_mad || !out_mad)
 909                 goto out;
 910
 911         init_query_mad(in_mad);
 912         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 913         in_mad->attr_mod = cpu_to_be32(index / 32);
 914
 915         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 916                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 917
 918         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 919                            in_mad, out_mad);
 920         if (err)
 921                 goto out;
 922
 923         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 924
 925 out:
 926         kfree(in_mad);
 927         kfree(out_mad);
 928         return err;
 929 }
 930
 931 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 932 {
 933         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 934 }
 935
 936 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 937                                  struct ib_device_modify *props)
 938 {
 939         struct mlx4_cmd_mailbox *mailbox;
 940         unsigned long flags;
 941
 942         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 943                 return -EOPNOTSUPP;
 944
 945         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 946                 return 0;
 947
 948         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 949                 return -EOPNOTSUPP;
 950
 951         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 952         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 953         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 954
 955         /*
 956          * If possible, pass node desc to FW, so it can generate
 957          * a 144 trap.  If cmd fails, just ignore.
 958          */
 959         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 960         if (IS_ERR(mailbox))
 961                 return 0;
 962
 963         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 964         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 965                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 966
 967         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 968
 969         return 0;
 970 }
 971
 972 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 973                             u32 cap_mask)
 974 {
 975         struct mlx4_cmd_mailbox *mailbox;
 976         int err;
 977
 978         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 979         if (IS_ERR(mailbox))
 980                 return PTR_ERR(mailbox);
 981
 982         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 983                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 984                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 985         } else {
 986                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 987                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 988         }
 989
 990         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
 991                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 992                        MLX4_CMD_WRAPPED);
 993
 994         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 995         return err;
 996 }
 997
 998 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 999                                struct ib_port_modify *props)
1000 {
1001         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1002         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1003         struct ib_port_attr attr;
1004         u32 cap_mask;
1005         int err;
1006
1007         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1008          * of whether port link layer is ETH or IB. For ETH ports, qkey
1009          * violations and port capabilities are not meaningful.
1010          */
1011         if (is_eth)
1012                 return 0;
1013
1014         mutex_lock(&mdev->cap_mask_mutex);
1015
1016         err = mlx4_ib_query_port(ibdev, port, &attr);
1017         if (err)
1018                 goto out;
1019
1020         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1021                 ~props->clr_port_cap_mask;
1022
1023         err = mlx4_ib_SET_PORT(mdev, port,
1024                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1025                                cap_mask);
1026
1027 out:
1028         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1029         return err;
1030 }
1031
1032 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
1033                                                   struct ib_udata *udata)
1034 {
1035         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1036         struct mlx4_ib_ucontext *context;
1037         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1038         struct mlx4_ib_alloc_ucontext_resp resp;
1039         int err;
1040
1041         if (!dev->ib_active)
1042                 return ERR_PTR(-EAGAIN);
1043
1044         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1045                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1046                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1047                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1048         } else {
1049                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1050                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1051                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1052                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1053                 resp.cqe_size         = dev->dev->caps.cqe_size;
1054         }
1055
1056         context = kzalloc(sizeof(*context), GFP_KERNEL);
1057         if (!context)
1058                 return ERR_PTR(-ENOMEM);
1059
1060         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1061         if (err) {
1062                 kfree(context);
1063                 return ERR_PTR(err);
1064         }
1065
1066         INIT_LIST_HEAD(&context->db_page_list);
1067         mutex_init(&context->db_page_mutex);
1068
1069         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1070                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1071         else
1072                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1073
1074         if (err) {
1075                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1076                 kfree(context);
1077                 return ERR_PTR(-EFAULT);
1078         }
1079
1080         return &context->ibucontext;
1081 }
1082
1083 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1084 {
1085         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1086
1087         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1088         kfree(context);
1089
1090         return 0;
1091 }
1092
1093 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
1094 {
1095         /* vma_open is called when a new VMA is created on top of our VMA.
1096          * This is done through either mremap flow or split_vma (usually due
1097          * to mlock, madvise, munmap, etc.). We do not support a clone of the
1098          * vma, as this VMA is strongly hardware related. Therefore we set the
1099          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1100          * calling us again and trying to do incorrect actions. We assume that
1101          * the original vma size is exactly a single page that there will be no
1102          * "splitting" operations on.
1103          */
1104         area->vm_ops = NULL;
1105 }
1106
1107 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
1108 {
1109         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1110
1111         /* It's guaranteed that all VMAs opened on a FD are closed before the
1112          * file itself is closed, therefore no sync is needed with the regular
1113          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1114          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1115          * The close operation is usually called under mm->mmap_sem except when
1116          * process is exiting.  The exiting case is handled explicitly as part
1117          * of mlx4_ib_disassociate_ucontext.
1118          */
1119         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1120                                 area->vm_private_data;
1121
1122         /* set the vma context pointer to null in the mlx4_ib driver's private
1123          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1124          */
1125         mlx4_ib_vma_priv_data->vma = NULL;
1126 }
1127
1128 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1129         .open = mlx4_ib_vma_open,
1130         .close = mlx4_ib_vma_close
1131 };
1132
1133 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1134 {
1135         int i;
1136         int ret = 0;
1137         struct vm_area_struct *vma;
1138         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1139         struct task_struct *owning_process  = NULL;
1140         struct mm_struct   *owning_mm       = NULL;
1141
1142         owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1143         if (!owning_process)
1144                 return;
1145
1146         owning_mm = get_task_mm(owning_process);
1147         if (!owning_mm) {
1148                 pr_info("no mm, disassociate ucontext is pending task termination\n");
1149                 while (1) {
1150                         /* make sure that task is dead before returning, it may
1151                          * prevent a rare case of module down in parallel to a
1152                          * call to mlx4_ib_vma_close.
1153                          */
1154                         put_task_struct(owning_process);
1155                         msleep(1);
1156                         owning_process = get_pid_task(ibcontext->tgid,
1157                                                       PIDTYPE_PID);
1158                         if (!owning_process ||
1159                             owning_process->state == TASK_DEAD) {
1160                                 pr_info("disassociate ucontext done, task was terminated\n");
1161                                 /* in case task was dead need to release the task struct */
1162                                 if (owning_process)
1163                                         put_task_struct(owning_process);
1164                                 return;
1165                         }
1166                 }
1167         }
1168
1169         /* need to protect from a race on closing the vma as part of
1170          * mlx4_ib_vma_close().
1171          */
1172         down_read(&owning_mm->mmap_sem);
1173         for (i = 0; i < HW_BAR_COUNT; i++) {
1174                 vma = context->hw_bar_info[i].vma;
1175                 if (!vma)
1176                         continue;
1177
1178                 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1179                                    context->hw_bar_info[i].vma->vm_start,
1180                                    PAGE_SIZE);
1181                 if (ret) {
1182                         pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1183                         BUG_ON(1);
1184                 }
1185
1186                 /* context going to be destroyed, should not access ops any more */
1187                 context->hw_bar_info[i].vma->vm_ops = NULL;
1188         }
1189
1190         up_read(&owning_mm->mmap_sem);
1191         mmput(owning_mm);
1192         put_task_struct(owning_process);
1193 }
1194
1195 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1196                                  struct mlx4_ib_vma_private_data *vma_private_data)
1197 {
1198         vma_private_data->vma = vma;
1199         vma->vm_private_data = vma_private_data;
1200         vma->vm_ops =  &mlx4_ib_vm_ops;
1201 }
1202
1203 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1204 {
1205         struct mlx4_ib_dev *dev = to_mdev(context->device);
1206         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1207
1208         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1209                 return -EINVAL;
1210
1211         if (vma->vm_pgoff == 0) {
1212                 /* We prevent double mmaping on same context */
1213                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1214                         return -EINVAL;
1215
1216                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1217
1218                 if (io_remap_pfn_range(vma, vma->vm_start,
1219                                        to_mucontext(context)->uar.pfn,
1220                                        PAGE_SIZE, vma->vm_page_prot))
1221                         return -EAGAIN;
1222
1223                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1224
1225         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1226                 /* We prevent double mmaping on same context */
1227                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1228                         return -EINVAL;
1229
1230                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1231
1232                 if (io_remap_pfn_range(vma, vma->vm_start,
1233                                        to_mucontext(context)->uar.pfn +
1234                                        dev->dev->caps.num_uars,
1235                                        PAGE_SIZE, vma->vm_page_prot))
1236                         return -EAGAIN;
1237
1238                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1239
1240         } else if (vma->vm_pgoff == 3) {
1241                 struct mlx4_clock_params params;
1242                 int ret;
1243
1244                 /* We prevent double mmaping on same context */
1245                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1246                         return -EINVAL;
1247
1248                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1249
1250                 if (ret)
1251                         return ret;
1252
1253                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1254                 if (io_remap_pfn_range(vma, vma->vm_start,
1255                                        (pci_resource_start(dev->dev->persist->pdev,
1256                                                            params.bar) +
1257                                         params.offset)
1258                                        >> PAGE_SHIFT,
1259                                        PAGE_SIZE, vma->vm_page_prot))
1260                         return -EAGAIN;
1261
1262                 mlx4_ib_set_vma_data(vma,
1263                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1264         } else {
1265                 return -EINVAL;
1266         }
1267
1268         return 0;
1269 }
1270
1271 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1272                                       struct ib_ucontext *context,
1273                                       struct ib_udata *udata)
1274 {
1275         struct mlx4_ib_pd *pd;
1276         int err;
1277
1278         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1279         if (!pd)
1280                 return ERR_PTR(-ENOMEM);
1281
1282         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1283         if (err) {
1284                 kfree(pd);
1285                 return ERR_PTR(err);
1286         }
1287
1288         if (context)
1289                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1290                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1291                         kfree(pd);
1292                         return ERR_PTR(-EFAULT);
1293                 }
1294
1295         return &pd->ibpd;
1296 }
1297
1298 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1299 {
1300         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1301         kfree(pd);
1302
1303         return 0;
1304 }
1305
1306 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1307                                           struct ib_ucontext *context,
1308                                           struct ib_udata *udata)
1309 {
1310         struct mlx4_ib_xrcd *xrcd;
1311         struct ib_cq_init_attr cq_attr = {};
1312         int err;
1313
1314         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1315                 return ERR_PTR(-ENOSYS);
1316
1317         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1318         if (!xrcd)
1319                 return ERR_PTR(-ENOMEM);
1320
1321         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1322         if (err)
1323                 goto err1;
1324
1325         xrcd->pd = ib_alloc_pd(ibdev, 0);
1326         if (IS_ERR(xrcd->pd)) {
1327                 err = PTR_ERR(xrcd->pd);
1328                 goto err2;
1329         }
1330
1331         cq_attr.cqe = 1;
1332         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1333         if (IS_ERR(xrcd->cq)) {
1334                 err = PTR_ERR(xrcd->cq);
1335                 goto err3;
1336         }
1337
1338         return &xrcd->ibxrcd;
1339
1340 err3:
1341         ib_dealloc_pd(xrcd->pd);
1342 err2:
1343         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1344 err1:
1345         kfree(xrcd);
1346         return ERR_PTR(err);
1347 }
1348
1349 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1350 {
1351         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1352         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1353         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1354         kfree(xrcd);
1355
1356         return 0;
1357 }
1358
1359 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1360 {
1361         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1362         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1363         struct mlx4_ib_gid_entry *ge;
1364
1365         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1366         if (!ge)
1367                 return -ENOMEM;
1368
1369         ge->gid = *gid;
1370         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1371                 ge->port = mqp->port;
1372                 ge->added = 1;
1373         }
1374
1375         mutex_lock(&mqp->mutex);
1376         list_add_tail(&ge->list, &mqp->gid_list);
1377         mutex_unlock(&mqp->mutex);
1378
1379         return 0;
1380 }
1381
1382 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1383                                           struct mlx4_ib_counters *ctr_table)
1384 {
1385         struct counter_index *counter, *tmp_count;
1386
1387         mutex_lock(&ctr_table->mutex);
1388         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1389                                  list) {
1390                 if (counter->allocated)
1391                         mlx4_counter_free(ibdev->dev, counter->index);
1392                 list_del(&counter->list);
1393                 kfree(counter);
1394         }
1395         mutex_unlock(&ctr_table->mutex);
1396 }
1397
1398 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1399                    union ib_gid *gid)
1400 {
1401         struct net_device *ndev;
1402         int ret = 0;
1403
1404         if (!mqp->port)
1405                 return 0;
1406
1407         spin_lock_bh(&mdev->iboe.lock);
1408         ndev = mdev->iboe.netdevs[mqp->port - 1];
1409         if (ndev)
1410                 dev_hold(ndev);
1411         spin_unlock_bh(&mdev->iboe.lock);
1412
1413         if (ndev) {
1414                 ret = 1;
1415                 dev_put(ndev);
1416         }
1417
1418         return ret;
1419 }
1420
1421 struct mlx4_ib_steering {
1422         struct list_head list;
1423         struct mlx4_flow_reg_id reg_id;
1424         union ib_gid gid;
1425 };
1426
1427 #define LAST_ETH_FIELD vlan_tag
1428 #define LAST_IB_FIELD sl
1429 #define LAST_IPV4_FIELD dst_ip
1430 #define LAST_TCP_UDP_FIELD src_port
1431
1432 /* Field is the last supported field */
1433 #define FIELDS_NOT_SUPPORTED(filter, field)\
1434         memchr_inv((void *)&filter.field  +\
1435                    sizeof(filter.field), 0,\
1436                    sizeof(filter) -\
1437                    offsetof(typeof(filter), field) -\
1438                    sizeof(filter.field))
1439
1440 static int parse_flow_attr(struct mlx4_dev *dev,
1441                            u32 qp_num,
1442                            union ib_flow_spec *ib_spec,
1443                            struct _rule_hw *mlx4_spec)
1444 {
1445         enum mlx4_net_trans_rule_id type;
1446
1447         switch (ib_spec->type) {
1448         case IB_FLOW_SPEC_ETH:
1449                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1450                         return -ENOTSUPP;
1451
1452                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1453                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1454                        ETH_ALEN);
1455                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1456                        ETH_ALEN);
1457                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1458                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1459                 break;
1460         case IB_FLOW_SPEC_IB:
1461                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1462                         return -ENOTSUPP;
1463
1464                 type = MLX4_NET_TRANS_RULE_ID_IB;
1465                 mlx4_spec->ib.l3_qpn =
1466                         cpu_to_be32(qp_num);
1467                 mlx4_spec->ib.qpn_mask =
1468                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1469                 break;
1470
1471
1472         case IB_FLOW_SPEC_IPV4:
1473                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1474                         return -ENOTSUPP;
1475
1476                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1477                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1478                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1479                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1480                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1481                 break;
1482
1483         case IB_FLOW_SPEC_TCP:
1484         case IB_FLOW_SPEC_UDP:
1485                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1486                         return -ENOTSUPP;
1487
1488                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1489                                         MLX4_NET_TRANS_RULE_ID_TCP :
1490                                         MLX4_NET_TRANS_RULE_ID_UDP;
1491                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1492                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1493                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1494                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1495                 break;
1496
1497         default:
1498                 return -EINVAL;
1499         }
1500         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1501             mlx4_hw_rule_sz(dev, type) < 0)
1502                 return -EINVAL;
1503         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1504         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1505         return mlx4_hw_rule_sz(dev, type);
1506 }
1507
1508 struct default_rules {
1509         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1510         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1511         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1512         __u8  link_layer;
1513 };
1514 static const struct default_rules default_table[] = {
1515         {
1516                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1517                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1518                 .rules_create_list = {IB_FLOW_SPEC_IB},
1519                 .link_layer = IB_LINK_LAYER_INFINIBAND
1520         }
1521 };
1522
1523 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1524                                          struct ib_flow_attr *flow_attr)
1525 {
1526         int i, j, k;
1527         void *ib_flow;
1528         const struct default_rules *pdefault_rules = default_table;
1529         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1530
1531         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1532                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1533                 memset(&field_types, 0, sizeof(field_types));
1534
1535                 if (link_layer != pdefault_rules->link_layer)
1536                         continue;
1537
1538                 ib_flow = flow_attr + 1;
1539                 /* we assume the specs are sorted */
1540                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1541                      j < flow_attr->num_of_specs; k++) {
1542                         union ib_flow_spec *current_flow =
1543                                 (union ib_flow_spec *)ib_flow;
1544
1545                         /* same layer but different type */
1546                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1547                              (pdefault_rules->mandatory_fields[k] &
1548                               IB_FLOW_SPEC_LAYER_MASK)) &&
1549                             (current_flow->type !=
1550                              pdefault_rules->mandatory_fields[k]))
1551                                 goto out;
1552
1553                         /* same layer, try match next one */
1554                         if (current_flow->type ==
1555                             pdefault_rules->mandatory_fields[k]) {
1556                                 j++;
1557                                 ib_flow +=
1558                                         ((union ib_flow_spec *)ib_flow)->size;
1559                         }
1560                 }
1561
1562                 ib_flow = flow_attr + 1;
1563                 for (j = 0; j < flow_attr->num_of_specs;
1564                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1565                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1566                                 /* same layer and same type */
1567                                 if (((union ib_flow_spec *)ib_flow)->type ==
1568                                     pdefault_rules->mandatory_not_fields[k])
1569                                         goto out;
1570
1571                 return i;
1572         }
1573 out:
1574         return -1;
1575 }
1576
1577 static int __mlx4_ib_create_default_rules(
1578                 struct mlx4_ib_dev *mdev,
1579                 struct ib_qp *qp,
1580                 const struct default_rules *pdefault_rules,
1581                 struct _rule_hw *mlx4_spec) {
1582         int size = 0;
1583         int i;
1584
1585         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1586                 int ret;
1587                 union ib_flow_spec ib_spec;
1588                 switch (pdefault_rules->rules_create_list[i]) {
1589                 case 0:
1590                         /* no rule */
1591                         continue;
1592                 case IB_FLOW_SPEC_IB:
1593                         ib_spec.type = IB_FLOW_SPEC_IB;
1594                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1595
1596                         break;
1597                 default:
1598                         /* invalid rule */
1599                         return -EINVAL;
1600                 }
1601                 /* We must put empty rule, qpn is being ignored */
1602                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1603                                       mlx4_spec);
1604                 if (ret < 0) {
1605                         pr_info("invalid parsing\n");
1606                         return -EINVAL;
1607                 }
1608
1609                 mlx4_spec = (void *)mlx4_spec + ret;
1610                 size += ret;
1611         }
1612         return size;
1613 }
1614
1615 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1616                           int domain,
1617                           enum mlx4_net_trans_promisc_mode flow_type,
1618                           u64 *reg_id)
1619 {
1620         int ret, i;
1621         int size = 0;
1622         void *ib_flow;
1623         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1624         struct mlx4_cmd_mailbox *mailbox;
1625         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1626         int default_flow;
1627
1628         static const u16 __mlx4_domain[] = {
1629                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1630                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1631                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1632                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1633         };
1634
1635         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1636                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1637                 return -EINVAL;
1638         }
1639
1640         if (domain >= IB_FLOW_DOMAIN_NUM) {
1641                 pr_err("Invalid domain value %d\n", domain);
1642                 return -EINVAL;
1643         }
1644
1645         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1646                 return -EINVAL;
1647
1648         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1649         if (IS_ERR(mailbox))
1650                 return PTR_ERR(mailbox);
1651         ctrl = mailbox->buf;
1652
1653         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1654                                  flow_attr->priority);
1655         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1656         ctrl->port = flow_attr->port;
1657         ctrl->qpn = cpu_to_be32(qp->qp_num);
1658
1659         ib_flow = flow_attr + 1;
1660         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1661         /* Add default flows */
1662         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1663         if (default_flow >= 0) {
1664                 ret = __mlx4_ib_create_default_rules(
1665                                 mdev, qp, default_table + default_flow,
1666                                 mailbox->buf + size);
1667                 if (ret < 0) {
1668                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1669                         return -EINVAL;
1670                 }
1671                 size += ret;
1672         }
1673         for (i = 0; i < flow_attr->num_of_specs; i++) {
1674                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1675                                       mailbox->buf + size);
1676                 if (ret < 0) {
1677                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1678                         return -EINVAL;
1679                 }
1680                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1681                 size += ret;
1682         }
1683
1684         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1685                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1686                            MLX4_CMD_WRAPPED);
1687         if (ret == -ENOMEM)
1688                 pr_err("mcg table is full. Fail to register network rule.\n");
1689         else if (ret == -ENXIO)
1690                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1691         else if (ret)
1692                 pr_err("Invalid argument. Fail to register network rule.\n");
1693
1694         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1695         return ret;
1696 }
1697
1698 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1699 {
1700         int err;
1701         err = mlx4_cmd(dev, reg_id, 0, 0,
1702                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1703                        MLX4_CMD_WRAPPED);
1704         if (err)
1705                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1706                        reg_id);
1707         return err;
1708 }
1709
1710 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1711                                     u64 *reg_id)
1712 {
1713         void *ib_flow;
1714         union ib_flow_spec *ib_spec;
1715         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1716         int err = 0;
1717
1718         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1719             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1720                 return 0; /* do nothing */
1721
1722         ib_flow = flow_attr + 1;
1723         ib_spec = (union ib_flow_spec *)ib_flow;
1724
1725         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1726                 return 0; /* do nothing */
1727
1728         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1729                                     flow_attr->port, qp->qp_num,
1730                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1731                                     reg_id);
1732         return err;
1733 }
1734
1735 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1736                                       struct ib_flow_attr *flow_attr,
1737                                       enum mlx4_net_trans_promisc_mode *type)
1738 {
1739         int err = 0;
1740
1741         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1742             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1743             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1744                 return -EOPNOTSUPP;
1745         }
1746
1747         if (flow_attr->num_of_specs == 0) {
1748                 type[0] = MLX4_FS_MC_SNIFFER;
1749                 type[1] = MLX4_FS_UC_SNIFFER;
1750         } else {
1751                 union ib_flow_spec *ib_spec;
1752
1753                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1754                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1755                         return -EINVAL;
1756
1757                 /* if all is zero than MC and UC */
1758                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1759                         type[0] = MLX4_FS_MC_SNIFFER;
1760                         type[1] = MLX4_FS_UC_SNIFFER;
1761                 } else {
1762                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1763                                             ib_spec->eth.mask.dst_mac[1],
1764                                             ib_spec->eth.mask.dst_mac[2],
1765                                             ib_spec->eth.mask.dst_mac[3],
1766                                             ib_spec->eth.mask.dst_mac[4],
1767                                             ib_spec->eth.mask.dst_mac[5]};
1768
1769                         /* Above xor was only on MC bit, non empty mask is valid
1770                          * only if this bit is set and rest are zero.
1771                          */
1772                         if (!is_zero_ether_addr(&mac[0]))
1773                                 return -EINVAL;
1774
1775                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1776                                 type[0] = MLX4_FS_MC_SNIFFER;
1777                         else
1778                                 type[0] = MLX4_FS_UC_SNIFFER;
1779                 }
1780         }
1781
1782         return err;
1783 }
1784
1785 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1786                                     struct ib_flow_attr *flow_attr,
1787                                     int domain)
1788 {
1789         int err = 0, i = 0, j = 0;
1790         struct mlx4_ib_flow *mflow;
1791         enum mlx4_net_trans_promisc_mode type[2];
1792         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1793         int is_bonded = mlx4_is_bonded(dev);
1794
1795         if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1796                 return ERR_PTR(-EINVAL);
1797
1798         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1799             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1800                 return ERR_PTR(-EOPNOTSUPP);
1801
1802         memset(type, 0, sizeof(type));
1803
1804         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1805         if (!mflow) {
1806                 err = -ENOMEM;
1807                 goto err_free;
1808         }
1809
1810         switch (flow_attr->type) {
1811         case IB_FLOW_ATTR_NORMAL:
1812                 /* If dont trap flag (continue match) is set, under specific
1813                  * condition traffic be replicated to given qp,
1814                  * without stealing it
1815                  */
1816                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1817                         err = mlx4_ib_add_dont_trap_rule(dev,
1818                                                          flow_attr,
1819                                                          type);
1820                         if (err)
1821                                 goto err_free;
1822                 } else {
1823                         type[0] = MLX4_FS_REGULAR;
1824                 }
1825                 break;
1826
1827         case IB_FLOW_ATTR_ALL_DEFAULT:
1828                 type[0] = MLX4_FS_ALL_DEFAULT;
1829                 break;
1830
1831         case IB_FLOW_ATTR_MC_DEFAULT:
1832                 type[0] = MLX4_FS_MC_DEFAULT;
1833                 break;
1834
1835         case IB_FLOW_ATTR_SNIFFER:
1836                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1837                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1838                 break;
1839
1840         default:
1841                 err = -EINVAL;
1842                 goto err_free;
1843         }
1844
1845         while (i < ARRAY_SIZE(type) && type[i]) {
1846                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1847                                             &mflow->reg_id[i].id);
1848                 if (err)
1849                         goto err_create_flow;
1850                 if (is_bonded) {
1851                         /* Application always sees one port so the mirror rule
1852                          * must be on port #2
1853                          */
1854                         flow_attr->port = 2;
1855                         err = __mlx4_ib_create_flow(qp, flow_attr,
1856                                                     domain, type[j],
1857                                                     &mflow->reg_id[j].mirror);
1858                         flow_attr->port = 1;
1859                         if (err)
1860                                 goto err_create_flow;
1861                         j++;
1862                 }
1863
1864                 i++;
1865         }
1866
1867         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1868                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1869                                                &mflow->reg_id[i].id);
1870                 if (err)
1871                         goto err_create_flow;
1872
1873                 if (is_bonded) {
1874                         flow_attr->port = 2;
1875                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1876                                                        &mflow->reg_id[j].mirror);
1877                         flow_attr->port = 1;
1878                         if (err)
1879                                 goto err_create_flow;
1880                         j++;
1881                 }
1882                 /* function to create mirror rule */
1883                 i++;
1884         }
1885
1886         return &mflow->ibflow;
1887
1888 err_create_flow:
1889         while (i) {
1890                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1891                                              mflow->reg_id[i].id);
1892                 i--;
1893         }
1894
1895         while (j) {
1896                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1897                                              mflow->reg_id[j].mirror);
1898                 j--;
1899         }
1900 err_free:
1901         kfree(mflow);
1902         return ERR_PTR(err);
1903 }
1904
1905 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1906 {
1907         int err, ret = 0;
1908         int i = 0;
1909         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1910         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1911
1912         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1913                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1914                 if (err)
1915                         ret = err;
1916                 if (mflow->reg_id[i].mirror) {
1917                         err = __mlx4_ib_destroy_flow(mdev->dev,
1918                                                      mflow->reg_id[i].mirror);
1919                         if (err)
1920                                 ret = err;
1921                 }
1922                 i++;
1923         }
1924
1925         kfree(mflow);
1926         return ret;
1927 }
1928
1929 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1930 {
1931         int err;
1932         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1933         struct mlx4_dev *dev = mdev->dev;
1934         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1935         struct mlx4_ib_steering *ib_steering = NULL;
1936         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1937         struct mlx4_flow_reg_id reg_id;
1938
1939         if (mdev->dev->caps.steering_mode ==
1940             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1941                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1942                 if (!ib_steering)
1943                         return -ENOMEM;
1944         }
1945
1946         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1947                                     !!(mqp->flags &
1948                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1949                                     prot, &reg_id.id);
1950         if (err) {
1951                 pr_err("multicast attach op failed, err %d\n", err);
1952                 goto err_malloc;
1953         }
1954
1955         reg_id.mirror = 0;
1956         if (mlx4_is_bonded(dev)) {
1957                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1958                                             (mqp->port == 1) ? 2 : 1,
1959                                             !!(mqp->flags &
1960                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1961                                             prot, &reg_id.mirror);
1962                 if (err)
1963                         goto err_add;
1964         }
1965
1966         err = add_gid_entry(ibqp, gid);
1967         if (err)
1968                 goto err_add;
1969
1970         if (ib_steering) {
1971                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1972                 ib_steering->reg_id = reg_id;
1973                 mutex_lock(&mqp->mutex);
1974                 list_add(&ib_steering->list, &mqp->steering_rules);
1975                 mutex_unlock(&mqp->mutex);
1976         }
1977         return 0;
1978
1979 err_add:
1980         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1981                               prot, reg_id.id);
1982         if (reg_id.mirror)
1983                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1984                                       prot, reg_id.mirror);
1985 err_malloc:
1986         kfree(ib_steering);
1987
1988         return err;
1989 }
1990
1991 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1992 {
1993         struct mlx4_ib_gid_entry *ge;
1994         struct mlx4_ib_gid_entry *tmp;
1995         struct mlx4_ib_gid_entry *ret = NULL;
1996
1997         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1998                 if (!memcmp(raw, ge->gid.raw, 16)) {
1999                         ret = ge;
2000                         break;
2001                 }
2002         }
2003
2004         return ret;
2005 }
2006
2007 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2008 {
2009         int err;
2010         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
2011         struct mlx4_dev *dev = mdev->dev;
2012         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
2013         struct net_device *ndev;
2014         struct mlx4_ib_gid_entry *ge;
2015         struct mlx4_flow_reg_id reg_id = {0, 0};
2016         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
2017
2018         if (mdev->dev->caps.steering_mode ==
2019             MLX4_STEERING_MODE_DEVICE_MANAGED) {
2020                 struct mlx4_ib_steering *ib_steering;
2021
2022                 mutex_lock(&mqp->mutex);
2023                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
2024                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
2025                                 list_del(&ib_steering->list);
2026                                 break;
2027                         }
2028                 }
2029                 mutex_unlock(&mqp->mutex);
2030                 if (&ib_steering->list == &mqp->steering_rules) {
2031                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
2032                         return -EINVAL;
2033                 }
2034                 reg_id = ib_steering->reg_id;
2035                 kfree(ib_steering);
2036         }
2037
2038         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2039                                     prot, reg_id.id);
2040         if (err)
2041                 return err;
2042
2043         if (mlx4_is_bonded(dev)) {
2044                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2045                                             prot, reg_id.mirror);
2046                 if (err)
2047                         return err;
2048         }
2049
2050         mutex_lock(&mqp->mutex);
2051         ge = find_gid_entry(mqp, gid->raw);
2052         if (ge) {
2053                 spin_lock_bh(&mdev->iboe.lock);
2054                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
2055                 if (ndev)
2056                         dev_hold(ndev);
2057                 spin_unlock_bh(&mdev->iboe.lock);
2058                 if (ndev)
2059                         dev_put(ndev);
2060                 list_del(&ge->list);
2061                 kfree(ge);
2062         } else
2063                 pr_warn("could not find mgid entry\n");
2064
2065         mutex_unlock(&mqp->mutex);
2066
2067         return 0;
2068 }
2069
2070 static int init_node_data(struct mlx4_ib_dev *dev)
2071 {
2072         struct ib_smp *in_mad  = NULL;
2073         struct ib_smp *out_mad = NULL;
2074         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
2075         int err = -ENOMEM;
2076
2077         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
2078         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
2079         if (!in_mad || !out_mad)
2080                 goto out;
2081
2082         init_query_mad(in_mad);
2083         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
2084         if (mlx4_is_master(dev->dev))
2085                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2086
2087         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2088         if (err)
2089                 goto out;
2090
2091         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2092
2093         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2094
2095         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2096         if (err)
2097                 goto out;
2098
2099         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2100         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2101
2102 out:
2103         kfree(in_mad);
2104         kfree(out_mad);
2105         return err;
2106 }
2107
2108 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2109                         char *buf)
2110 {
2111         struct mlx4_ib_dev *dev =
2112                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2113         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2114 }
2115
2116 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2117                         char *buf)
2118 {
2119         struct mlx4_ib_dev *dev =
2120                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2121         return sprintf(buf, "%x\n", dev->dev->rev_id);
2122 }
2123
2124 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2125                           char *buf)
2126 {
2127         struct mlx4_ib_dev *dev =
2128                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2129         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2130                        dev->dev->board_id);
2131 }
2132
2133 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
2134 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
2135 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
2136
2137 static struct device_attribute *mlx4_class_attributes[] = {
2138         &dev_attr_hw_rev,
2139         &dev_attr_hca_type,
2140         &dev_attr_board_id
2141 };
2142
2143 struct diag_counter {
2144         const char *name;
2145         u32 offset;
2146 };
2147
2148 #define DIAG_COUNTER(_name, _offset)                    \
2149         { .name = #_name, .offset = _offset }
2150
2151 static const struct diag_counter diag_basic[] = {
2152         DIAG_COUNTER(rq_num_lle, 0x00),
2153         DIAG_COUNTER(sq_num_lle, 0x04),
2154         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2155         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2156         DIAG_COUNTER(rq_num_lpe, 0x18),
2157         DIAG_COUNTER(sq_num_lpe, 0x1C),
2158         DIAG_COUNTER(rq_num_wrfe, 0x20),
2159         DIAG_COUNTER(sq_num_wrfe, 0x24),
2160         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2161         DIAG_COUNTER(sq_num_bre, 0x34),
2162         DIAG_COUNTER(sq_num_rire, 0x44),
2163         DIAG_COUNTER(rq_num_rire, 0x48),
2164         DIAG_COUNTER(sq_num_rae, 0x4C),
2165         DIAG_COUNTER(rq_num_rae, 0x50),
2166         DIAG_COUNTER(sq_num_roe, 0x54),
2167         DIAG_COUNTER(sq_num_tree, 0x5C),
2168         DIAG_COUNTER(sq_num_rree, 0x64),
2169         DIAG_COUNTER(rq_num_rnr, 0x68),
2170         DIAG_COUNTER(sq_num_rnr, 0x6C),
2171         DIAG_COUNTER(rq_num_oos, 0x100),
2172         DIAG_COUNTER(sq_num_oos, 0x104),
2173 };
2174
2175 static const struct diag_counter diag_ext[] = {
2176         DIAG_COUNTER(rq_num_dup, 0x130),
2177         DIAG_COUNTER(sq_num_to, 0x134),
2178 };
2179
2180 static const struct diag_counter diag_device_only[] = {
2181         DIAG_COUNTER(num_cqovf, 0x1A0),
2182         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2183 };
2184
2185 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2186                                                     u8 port_num)
2187 {
2188         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2189         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2190
2191         if (!diag[!!port_num].name)
2192                 return NULL;
2193
2194         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2195                                           diag[!!port_num].num_counters,
2196                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2197 }
2198
2199 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2200                                 struct rdma_hw_stats *stats,
2201                                 u8 port, int index)
2202 {
2203         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2204         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2205         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2206                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2207         int ret;
2208         int i;
2209
2210         ret = mlx4_query_diag_counters(dev->dev,
2211                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2212                                        diag[!!port].offset, hw_value,
2213                                        diag[!!port].num_counters, port);
2214
2215         if (ret)
2216                 return ret;
2217
2218         for (i = 0; i < diag[!!port].num_counters; i++)
2219                 stats->value[i] = hw_value[i];
2220
2221         return diag[!!port].num_counters;
2222 }
2223
2224 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2225                                          const char ***name,
2226                                          u32 **offset,
2227                                          u32 *num,
2228                                          bool port)
2229 {
2230         u32 num_counters;
2231
2232         num_counters = ARRAY_SIZE(diag_basic);
2233
2234         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2235                 num_counters += ARRAY_SIZE(diag_ext);
2236
2237         if (!port)
2238                 num_counters += ARRAY_SIZE(diag_device_only);
2239
2240         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2241         if (!*name)
2242                 return -ENOMEM;
2243
2244         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2245         if (!*offset)
2246                 goto err_name;
2247
2248         *num = num_counters;
2249
2250         return 0;
2251
2252 err_name:
2253         kfree(*name);
2254         return -ENOMEM;
2255 }
2256
2257 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2258                                        const char **name,
2259                                        u32 *offset,
2260                                        bool port)
2261 {
2262         int i;
2263         int j;
2264
2265         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2266                 name[i] = diag_basic[i].name;
2267                 offset[i] = diag_basic[i].offset;
2268         }
2269
2270         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2271                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2272                         name[j] = diag_ext[i].name;
2273                         offset[j] = diag_ext[i].offset;
2274                 }
2275         }
2276
2277         if (!port) {
2278                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2279                         name[j] = diag_device_only[i].name;
2280                         offset[j] = diag_device_only[i].offset;
2281                 }
2282         }
2283 }
2284
2285 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2286 {
2287         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2288         int i;
2289         int ret;
2290         bool per_port = !!(ibdev->dev->caps.flags2 &
2291                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2292
2293         if (mlx4_is_slave(ibdev->dev))
2294                 return 0;
2295
2296         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2297                 /* i == 1 means we are building port counters */
2298                 if (i && !per_port)
2299                         continue;
2300
2301                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2302                                                     &diag[i].offset,
2303                                                     &diag[i].num_counters, i);
2304                 if (ret)
2305                         goto err_alloc;
2306
2307                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2308                                            diag[i].offset, i);
2309         }
2310
2311         ibdev->ib_dev.get_hw_stats      = mlx4_ib_get_hw_stats;
2312         ibdev->ib_dev.alloc_hw_stats    = mlx4_ib_alloc_hw_stats;
2313
2314         return 0;
2315
2316 err_alloc:
2317         if (i) {
2318                 kfree(diag[i - 1].name);
2319                 kfree(diag[i - 1].offset);
2320         }
2321
2322         return ret;
2323 }
2324
2325 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2326 {
2327         int i;
2328
2329         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2330                 kfree(ibdev->diag_counters[i].offset);
2331                 kfree(ibdev->diag_counters[i].name);
2332         }
2333 }
2334
2335 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2336 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2337                                struct net_device *dev,
2338                                int port)
2339 {
2340         u64 new_smac = 0;
2341         u64 release_mac = MLX4_IB_INVALID_MAC;
2342         struct mlx4_ib_qp *qp;
2343
2344         read_lock(&dev_base_lock);
2345         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2346         read_unlock(&dev_base_lock);
2347
2348         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2349
2350         /* no need for update QP1 and mac registration in non-SRIOV */
2351         if (!mlx4_is_mfunc(ibdev->dev))
2352                 return;
2353
2354         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2355         qp = ibdev->qp1_proxy[port - 1];
2356         if (qp) {
2357                 int new_smac_index;
2358                 u64 old_smac;
2359                 struct mlx4_update_qp_params update_params;
2360
2361                 mutex_lock(&qp->mutex);
2362                 old_smac = qp->pri.smac;
2363                 if (new_smac == old_smac)
2364                         goto unlock;
2365
2366                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2367
2368                 if (new_smac_index < 0)
2369                         goto unlock;
2370
2371                 update_params.smac_index = new_smac_index;
2372                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2373                                    &update_params)) {
2374                         release_mac = new_smac;
2375                         goto unlock;
2376                 }
2377                 /* if old port was zero, no mac was yet registered for this QP */
2378                 if (qp->pri.smac_port)
2379                         release_mac = old_smac;
2380                 qp->pri.smac = new_smac;
2381                 qp->pri.smac_port = port;
2382                 qp->pri.smac_index = new_smac_index;
2383         }
2384
2385 unlock:
2386         if (release_mac != MLX4_IB_INVALID_MAC)
2387                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2388         if (qp)
2389                 mutex_unlock(&qp->mutex);
2390         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2391 }
2392
2393 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2394                                  struct net_device *dev,
2395                                  unsigned long event)
2396
2397 {
2398         struct mlx4_ib_iboe *iboe;
2399         int update_qps_port = -1;
2400         int port;
2401
2402         ASSERT_RTNL();
2403
2404         iboe = &ibdev->iboe;
2405
2406         spin_lock_bh(&iboe->lock);
2407         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2408
2409                 iboe->netdevs[port - 1] =
2410                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2411
2412                 if (dev == iboe->netdevs[port - 1] &&
2413                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2414                      event == NETDEV_UP || event == NETDEV_CHANGE))
2415                         update_qps_port = port;
2416
2417         }
2418         spin_unlock_bh(&iboe->lock);
2419
2420         if (update_qps_port > 0)
2421                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2422 }
2423
2424 static int mlx4_ib_netdev_event(struct notifier_block *this,
2425                                 unsigned long event, void *ptr)
2426 {
2427         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2428         struct mlx4_ib_dev *ibdev;
2429
2430         if (!net_eq(dev_net(dev), &init_net))
2431                 return NOTIFY_DONE;
2432
2433         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2434         mlx4_ib_scan_netdevs(ibdev, dev, event);
2435
2436         return NOTIFY_DONE;
2437 }
2438
2439 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2440 {
2441         int port;
2442         int slave;
2443         int i;
2444
2445         if (mlx4_is_master(ibdev->dev)) {
2446                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2447                      ++slave) {
2448                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2449                                 for (i = 0;
2450                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2451                                      ++i) {
2452                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2453                                         /* master has the identity virt2phys pkey mapping */
2454                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2455                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2456                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2457                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2458                                 }
2459                         }
2460                 }
2461                 /* initialize pkey cache */
2462                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2463                         for (i = 0;
2464                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2465                              ++i)
2466                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2467                                         (i) ? 0 : 0xFFFF;
2468                 }
2469         }
2470 }
2471
2472 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2473 {
2474         int i, j, eq = 0, total_eqs = 0;
2475
2476         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2477                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2478         if (!ibdev->eq_table)
2479                 return;
2480
2481         for (i = 1; i <= dev->caps.num_ports; i++) {
2482                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2483                      j++, total_eqs++) {
2484                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2485                                 continue;
2486                         ibdev->eq_table[eq] = total_eqs;
2487                         if (!mlx4_assign_eq(dev, i,
2488                                             &ibdev->eq_table[eq]))
2489                                 eq++;
2490                         else
2491                                 ibdev->eq_table[eq] = -1;
2492                 }
2493         }
2494
2495         for (i = eq; i < dev->caps.num_comp_vectors;
2496              ibdev->eq_table[i++] = -1)
2497                 ;
2498
2499         /* Advertise the new number of EQs to clients */
2500         ibdev->ib_dev.num_comp_vectors = eq;
2501 }
2502
2503 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2504 {
2505         int i;
2506         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2507
2508         /* no eqs were allocated */
2509         if (!ibdev->eq_table)
2510                 return;
2511
2512         /* Reset the advertised EQ number */
2513         ibdev->ib_dev.num_comp_vectors = 0;
2514
2515         for (i = 0; i < total_eqs; i++)
2516                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2517
2518         kfree(ibdev->eq_table);
2519         ibdev->eq_table = NULL;
2520 }
2521
2522 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2523                                struct ib_port_immutable *immutable)
2524 {
2525         struct ib_port_attr attr;
2526         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2527         int err;
2528
2529         err = mlx4_ib_query_port(ibdev, port_num, &attr);
2530         if (err)
2531                 return err;
2532
2533         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2534         immutable->gid_tbl_len = attr.gid_tbl_len;
2535
2536         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2537                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2538         } else {
2539                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2540                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2541                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2542                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2543                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2544         }
2545
2546         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2547
2548         return 0;
2549 }
2550
2551 static void get_fw_ver_str(struct ib_device *device, char *str,
2552                            size_t str_len)
2553 {
2554         struct mlx4_ib_dev *dev =
2555                 container_of(device, struct mlx4_ib_dev, ib_dev);
2556         snprintf(str, str_len, "%d.%d.%d",
2557                  (int) (dev->dev->caps.fw_ver >> 32),
2558                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2559                  (int) dev->dev->caps.fw_ver & 0xffff);
2560 }
2561
2562 static void *mlx4_ib_add(struct mlx4_dev *dev)
2563 {
2564         struct mlx4_ib_dev *ibdev;
2565         int num_ports = 0;
2566         int i, j;
2567         int err;
2568         struct mlx4_ib_iboe *iboe;
2569         int ib_num_ports = 0;
2570         int num_req_counters;
2571         int allocated;
2572         u32 counter_index;
2573         struct counter_index *new_counter_index = NULL;
2574
2575         pr_info_once("%s", mlx4_ib_version);
2576
2577         num_ports = 0;
2578         mlx4_foreach_ib_transport_port(i, dev)
2579                 num_ports++;
2580
2581         /* No point in registering a device with no ports... */
2582         if (num_ports == 0)
2583                 return NULL;
2584
2585         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2586         if (!ibdev) {
2587                 dev_err(&dev->persist->pdev->dev,
2588                         "Device struct alloc failed\n");
2589                 return NULL;
2590         }
2591
2592         iboe = &ibdev->iboe;
2593
2594         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2595                 goto err_dealloc;
2596
2597         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2598                 goto err_pd;
2599
2600         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2601                                  PAGE_SIZE);
2602         if (!ibdev->uar_map)
2603                 goto err_uar;
2604         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2605
2606         ibdev->dev = dev;
2607         ibdev->bond_next_port   = 0;
2608
2609         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2610         ibdev->ib_dev.owner             = THIS_MODULE;
2611         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2612         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2613         ibdev->num_ports                = num_ports;
2614         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2615                                                 1 : ibdev->num_ports;
2616         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2617         ibdev->ib_dev.dma_device        = &dev->persist->pdev->dev;
2618         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2619         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2620         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2621
2622         if (dev->caps.userspace_caps)
2623                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2624         else
2625                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2626
2627         ibdev->ib_dev.uverbs_cmd_mask   =
2628                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2629                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2630                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2631                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2632                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2633                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2634                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2635                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2636                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2637                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2638                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2639                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2640                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2641                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2642                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2643                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2644                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2645                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2646                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2647                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2648                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2649                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2650                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2651                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2652
2653         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2654         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2655         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2656         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2657         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2658         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2659         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2660         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2661         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2662         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2663         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2664         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2665         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2666         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2667         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2668         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2669         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2670         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2671         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2672         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2673         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2674         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2675         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2676         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2677         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2678         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2679         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2680         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2681         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2682         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2683         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2684         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2685         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2686         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2687         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2688         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2689         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2690         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2691         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2692         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2693         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2694         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2695         ibdev->ib_dev.get_dev_fw_str    = get_fw_ver_str;
2696         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2697
2698         if (!mlx4_is_slave(ibdev->dev)) {
2699                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2700                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2701                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2702                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2703         }
2704
2705         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2706             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2707                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2708                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2709
2710                 ibdev->ib_dev.uverbs_cmd_mask |=
2711                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2712                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2713         }
2714
2715         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2716                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2717                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2718                 ibdev->ib_dev.uverbs_cmd_mask |=
2719                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2720                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2721         }
2722
2723         if (check_flow_steering_support(dev)) {
2724                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2725                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2726                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2727
2728                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2729                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2730                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2731         }
2732
2733         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2734                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2735                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2736                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2737
2738         mlx4_ib_alloc_eqs(dev, ibdev);
2739
2740         spin_lock_init(&iboe->lock);
2741
2742         if (init_node_data(ibdev))
2743                 goto err_map;
2744         mlx4_init_sl2vl_tbl(ibdev);
2745
2746         for (i = 0; i < ibdev->num_ports; ++i) {
2747                 mutex_init(&ibdev->counters_table[i].mutex);
2748                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2749         }
2750
2751         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2752         for (i = 0; i < num_req_counters; ++i) {
2753                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2754                 allocated = 0;
2755                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2756                                                 IB_LINK_LAYER_ETHERNET) {
2757                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2758                         /* if failed to allocate a new counter, use default */
2759                         if (err)
2760                                 counter_index =
2761                                         mlx4_get_default_counter_index(dev,
2762                                                                        i + 1);
2763                         else
2764                                 allocated = 1;
2765                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2766                         counter_index = mlx4_get_default_counter_index(dev,
2767                                                                        i + 1);
2768                 }
2769                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2770                                             GFP_KERNEL);
2771                 if (!new_counter_index) {
2772                         if (allocated)
2773                                 mlx4_counter_free(ibdev->dev, counter_index);
2774                         goto err_counter;
2775                 }
2776                 new_counter_index->index = counter_index;
2777                 new_counter_index->allocated = allocated;
2778                 list_add_tail(&new_counter_index->list,
2779                               &ibdev->counters_table[i].counters_list);
2780                 ibdev->counters_table[i].default_counter = counter_index;
2781                 pr_info("counter index %d for port %d allocated %d\n",
2782                         counter_index, i + 1, allocated);
2783         }
2784         if (mlx4_is_bonded(dev))
2785                 for (i = 1; i < ibdev->num_ports ; ++i) {
2786                         new_counter_index =
2787                                         kmalloc(sizeof(struct counter_index),
2788                                                 GFP_KERNEL);
2789                         if (!new_counter_index)
2790                                 goto err_counter;
2791                         new_counter_index->index = counter_index;
2792                         new_counter_index->allocated = 0;
2793                         list_add_tail(&new_counter_index->list,
2794                                       &ibdev->counters_table[i].counters_list);
2795                         ibdev->counters_table[i].default_counter =
2796                                                                 counter_index;
2797                 }
2798
2799         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2800                 ib_num_ports++;
2801
2802         spin_lock_init(&ibdev->sm_lock);
2803         mutex_init(&ibdev->cap_mask_mutex);
2804         INIT_LIST_HEAD(&ibdev->qp_list);
2805         spin_lock_init(&ibdev->reset_flow_resource_lock);
2806
2807         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2808             ib_num_ports) {
2809                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2810                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2811                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2812                                             &ibdev->steer_qpn_base, 0);
2813                 if (err)
2814                         goto err_counter;
2815
2816                 ibdev->ib_uc_qpns_bitmap =
2817                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2818                                 sizeof(long),
2819                                 GFP_KERNEL);
2820                 if (!ibdev->ib_uc_qpns_bitmap) {
2821                         dev_err(&dev->persist->pdev->dev,
2822                                 "bit map alloc failed\n");
2823                         goto err_steer_qp_release;
2824                 }
2825
2826                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2827
2828                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2829                                 dev, ibdev->steer_qpn_base,
2830                                 ibdev->steer_qpn_base +
2831                                 ibdev->steer_qpn_count - 1);
2832                 if (err)
2833                         goto err_steer_free_bitmap;
2834         }
2835
2836         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2837                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2838
2839         if (mlx4_ib_alloc_diag_counters(ibdev))
2840                 goto err_steer_free_bitmap;
2841
2842         if (ib_register_device(&ibdev->ib_dev, NULL))
2843                 goto err_diag_counters;
2844
2845         if (mlx4_ib_mad_init(ibdev))
2846                 goto err_reg;
2847
2848         if (mlx4_ib_init_sriov(ibdev))
2849                 goto err_mad;
2850
2851         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE ||
2852             dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2853                 if (!iboe->nb.notifier_call) {
2854                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2855                         err = register_netdevice_notifier(&iboe->nb);
2856                         if (err) {
2857                                 iboe->nb.notifier_call = NULL;
2858                                 goto err_notif;
2859                         }
2860                 }
2861                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2862                         err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2863                         if (err) {
2864                                 goto err_notif;
2865                         }
2866                 }
2867         }
2868
2869         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2870                 if (device_create_file(&ibdev->ib_dev.dev,
2871                                        mlx4_class_attributes[j]))
2872                         goto err_notif;
2873         }
2874
2875         ibdev->ib_active = true;
2876         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2877                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2878                                          &ibdev->ib_dev);
2879
2880         if (mlx4_is_mfunc(ibdev->dev))
2881                 init_pkeys(ibdev);
2882
2883         /* create paravirt contexts for any VFs which are active */
2884         if (mlx4_is_master(ibdev->dev)) {
2885                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2886                         if (j == mlx4_master_func_num(ibdev->dev))
2887                                 continue;
2888                         if (mlx4_is_slave_active(ibdev->dev, j))
2889                                 do_slave_init(ibdev, j, 1);
2890                 }
2891         }
2892         return ibdev;
2893
2894 err_notif:
2895         if (ibdev->iboe.nb.notifier_call) {
2896                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2897                         pr_warn("failure unregistering notifier\n");
2898                 ibdev->iboe.nb.notifier_call = NULL;
2899         }
2900         flush_workqueue(wq);
2901
2902         mlx4_ib_close_sriov(ibdev);
2903
2904 err_mad:
2905         mlx4_ib_mad_cleanup(ibdev);
2906
2907 err_reg:
2908         ib_unregister_device(&ibdev->ib_dev);
2909
2910 err_diag_counters:
2911         mlx4_ib_diag_cleanup(ibdev);
2912
2913 err_steer_free_bitmap:
2914         kfree(ibdev->ib_uc_qpns_bitmap);
2915
2916 err_steer_qp_release:
2917         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2918                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2919                                       ibdev->steer_qpn_count);
2920 err_counter:
2921         for (i = 0; i < ibdev->num_ports; ++i)
2922                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2923
2924 err_map:
2925         iounmap(ibdev->uar_map);
2926
2927 err_uar:
2928         mlx4_uar_free(dev, &ibdev->priv_uar);
2929
2930 err_pd:
2931         mlx4_pd_free(dev, ibdev->priv_pdn);
2932
2933 err_dealloc:
2934         ib_dealloc_device(&ibdev->ib_dev);
2935
2936         return NULL;
2937 }
2938
2939 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2940 {
2941         int offset;
2942
2943         WARN_ON(!dev->ib_uc_qpns_bitmap);
2944
2945         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2946                                          dev->steer_qpn_count,
2947                                          get_count_order(count));
2948         if (offset < 0)
2949                 return offset;
2950
2951         *qpn = dev->steer_qpn_base + offset;
2952         return 0;
2953 }
2954
2955 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2956 {
2957         if (!qpn ||
2958             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2959                 return;
2960
2961         BUG_ON(qpn < dev->steer_qpn_base);
2962
2963         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2964                               qpn - dev->steer_qpn_base,
2965                               get_count_order(count));
2966 }
2967
2968 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2969                          int is_attach)
2970 {
2971         int err;
2972         size_t flow_size;
2973         struct ib_flow_attr *flow = NULL;
2974         struct ib_flow_spec_ib *ib_spec;
2975
2976         if (is_attach) {
2977                 flow_size = sizeof(struct ib_flow_attr) +
2978                             sizeof(struct ib_flow_spec_ib);
2979                 flow = kzalloc(flow_size, GFP_KERNEL);
2980                 if (!flow)
2981                         return -ENOMEM;
2982                 flow->port = mqp->port;
2983                 flow->num_of_specs = 1;
2984                 flow->size = flow_size;
2985                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2986                 ib_spec->type = IB_FLOW_SPEC_IB;
2987                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2988                 /* Add an empty rule for IB L2 */
2989                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2990
2991                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2992                                             IB_FLOW_DOMAIN_NIC,
2993                                             MLX4_FS_REGULAR,
2994                                             &mqp->reg_id);
2995         } else {
2996                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2997         }
2998         kfree(flow);
2999         return err;
3000 }
3001
3002 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
3003 {
3004         struct mlx4_ib_dev *ibdev = ibdev_ptr;
3005         int p;
3006         int i;
3007
3008         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
3009                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
3010         ibdev->ib_active = false;
3011         flush_workqueue(wq);
3012
3013         mlx4_ib_close_sriov(ibdev);
3014         mlx4_ib_mad_cleanup(ibdev);
3015         ib_unregister_device(&ibdev->ib_dev);
3016         mlx4_ib_diag_cleanup(ibdev);
3017         if (ibdev->iboe.nb.notifier_call) {
3018                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
3019                         pr_warn("failure unregistering notifier\n");
3020                 ibdev->iboe.nb.notifier_call = NULL;
3021         }
3022
3023         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
3024                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3025                                       ibdev->steer_qpn_count);
3026                 kfree(ibdev->ib_uc_qpns_bitmap);
3027         }
3028
3029         iounmap(ibdev->uar_map);
3030         for (p = 0; p < ibdev->num_ports; ++p)
3031                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3032
3033         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3034                 mlx4_CLOSE_PORT(dev, p);
3035
3036         mlx4_ib_free_eqs(dev, ibdev);
3037
3038         mlx4_uar_free(dev, &ibdev->priv_uar);
3039         mlx4_pd_free(dev, ibdev->priv_pdn);
3040         ib_dealloc_device(&ibdev->ib_dev);
3041 }
3042
3043 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3044 {
3045         struct mlx4_ib_demux_work **dm = NULL;
3046         struct mlx4_dev *dev = ibdev->dev;
3047         int i;
3048         unsigned long flags;
3049         struct mlx4_active_ports actv_ports;
3050         unsigned int ports;
3051         unsigned int first_port;
3052
3053         if (!mlx4_is_master(dev))
3054                 return;
3055
3056         actv_ports = mlx4_get_active_ports(dev, slave);
3057         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3058         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3059
3060         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3061         if (!dm) {
3062                 pr_err("failed to allocate memory for tunneling qp update\n");
3063                 return;
3064         }
3065
3066         for (i = 0; i < ports; i++) {
3067                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3068                 if (!dm[i]) {
3069                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
3070                         while (--i >= 0)
3071                                 kfree(dm[i]);
3072                         goto out;
3073                 }
3074                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3075                 dm[i]->port = first_port + i + 1;
3076                 dm[i]->slave = slave;
3077                 dm[i]->do_init = do_init;
3078                 dm[i]->dev = ibdev;
3079         }
3080         /* initialize or tear down tunnel QPs for the slave */
3081         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3082         if (!ibdev->sriov.is_going_down) {
3083                 for (i = 0; i < ports; i++)
3084                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3085                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3086         } else {
3087                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3088                 for (i = 0; i < ports; i++)
3089                         kfree(dm[i]);
3090         }
3091 out:
3092         kfree(dm);
3093         return;
3094 }
3095
3096 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3097 {
3098         struct mlx4_ib_qp *mqp;
3099         unsigned long flags_qp;
3100         unsigned long flags_cq;
3101         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3102         struct list_head    cq_notify_list;
3103         struct mlx4_cq *mcq;
3104         unsigned long flags;
3105
3106         pr_warn("mlx4_ib_handle_catas_error was started\n");
3107         INIT_LIST_HEAD(&cq_notify_list);
3108
3109         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3110         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3111
3112         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3113                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3114                 if (mqp->sq.tail != mqp->sq.head) {
3115                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3116                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3117                         if (send_mcq->mcq.comp &&
3118                             mqp->ibqp.send_cq->comp_handler) {
3119                                 if (!send_mcq->mcq.reset_notify_added) {
3120                                         send_mcq->mcq.reset_notify_added = 1;
3121                                         list_add_tail(&send_mcq->mcq.reset_notify,
3122                                                       &cq_notify_list);
3123                                 }
3124                         }
3125                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3126                 }
3127                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3128                 /* Now, handle the QP's receive queue */
3129                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3130                 /* no handling is needed for SRQ */
3131                 if (!mqp->ibqp.srq) {
3132                         if (mqp->rq.tail != mqp->rq.head) {
3133                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3134                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3135                                 if (recv_mcq->mcq.comp &&
3136                                     mqp->ibqp.recv_cq->comp_handler) {
3137                                         if (!recv_mcq->mcq.reset_notify_added) {
3138                                                 recv_mcq->mcq.reset_notify_added = 1;
3139                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3140                                                               &cq_notify_list);
3141                                         }
3142                                 }
3143                                 spin_unlock_irqrestore(&recv_mcq->lock,
3144                                                        flags_cq);
3145                         }
3146                 }
3147                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3148         }
3149
3150         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3151                 mcq->comp(mcq);
3152         }
3153         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3154         pr_warn("mlx4_ib_handle_catas_error ended\n");
3155 }
3156
3157 static void handle_bonded_port_state_event(struct work_struct *work)
3158 {
3159         struct ib_event_work *ew =
3160                 container_of(work, struct ib_event_work, work);
3161         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3162         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3163         int i;
3164         struct ib_event ibev;
3165
3166         kfree(ew);
3167         spin_lock_bh(&ibdev->iboe.lock);
3168         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3169                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3170                 enum ib_port_state curr_port_state;
3171
3172                 if (!curr_netdev)
3173                         continue;
3174
3175                 curr_port_state =
3176                         (netif_running(curr_netdev) &&
3177                          netif_carrier_ok(curr_netdev)) ?
3178                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3179
3180                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3181                         curr_port_state : IB_PORT_ACTIVE;
3182         }
3183         spin_unlock_bh(&ibdev->iboe.lock);
3184
3185         ibev.device = &ibdev->ib_dev;
3186         ibev.element.port_num = 1;
3187         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3188                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3189
3190         ib_dispatch_event(&ibev);
3191 }
3192
3193 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3194 {
3195         u64 sl2vl;
3196         int err;
3197
3198         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3199         if (err) {
3200                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3201                        port, err);
3202                 sl2vl = 0;
3203         }
3204         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3205 }
3206
3207 static void ib_sl2vl_update_work(struct work_struct *work)
3208 {
3209         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3210         struct mlx4_ib_dev *mdev = ew->ib_dev;
3211         int port = ew->port;
3212
3213         mlx4_ib_sl2vl_update(mdev, port);
3214
3215         kfree(ew);
3216 }
3217
3218 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3219                                      int port)
3220 {
3221         struct ib_event_work *ew;
3222
3223         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3224         if (ew) {
3225                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3226                 ew->port = port;
3227                 ew->ib_dev = ibdev;
3228                 queue_work(wq, &ew->work);
3229         } else {
3230                 pr_err("failed to allocate memory for sl2vl update work\n");
3231         }
3232 }
3233
3234 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3235                           enum mlx4_dev_event event, unsigned long param)
3236 {
3237         struct ib_event ibev;
3238         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3239         struct mlx4_eqe *eqe = NULL;
3240         struct ib_event_work *ew;
3241         int p = 0;
3242
3243         if (mlx4_is_bonded(dev) &&
3244             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3245             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3246                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3247                 if (!ew)
3248                         return;
3249                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3250                 ew->ib_dev = ibdev;
3251                 queue_work(wq, &ew->work);
3252                 return;
3253         }
3254
3255         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3256                 eqe = (struct mlx4_eqe *)param;
3257         else
3258                 p = (int) param;
3259
3260         switch (event) {
3261         case MLX4_DEV_EVENT_PORT_UP:
3262                 if (p > ibdev->num_ports)
3263                         return;
3264                 if (!mlx4_is_slave(dev) &&
3265                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3266                         IB_LINK_LAYER_INFINIBAND) {
3267                         if (mlx4_is_master(dev))
3268                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3269                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3270                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3271                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3272                 }
3273                 ibev.event = IB_EVENT_PORT_ACTIVE;
3274                 break;
3275
3276         case MLX4_DEV_EVENT_PORT_DOWN:
3277                 if (p > ibdev->num_ports)
3278                         return;
3279                 ibev.event = IB_EVENT_PORT_ERR;
3280                 break;
3281
3282         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3283                 ibdev->ib_active = false;
3284                 ibev.event = IB_EVENT_DEVICE_FATAL;
3285                 mlx4_ib_handle_catas_error(ibdev);
3286                 break;
3287
3288         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3289                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3290                 if (!ew) {
3291                         pr_err("failed to allocate memory for events work\n");
3292                         break;
3293                 }
3294
3295                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3296                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3297                 ew->ib_dev = ibdev;
3298                 /* need to queue only for port owner, which uses GEN_EQE */
3299                 if (mlx4_is_master(dev))
3300                         queue_work(wq, &ew->work);
3301                 else
3302                         handle_port_mgmt_change_event(&ew->work);
3303                 return;
3304
3305         case MLX4_DEV_EVENT_SLAVE_INIT:
3306                 /* here, p is the slave id */
3307                 do_slave_init(ibdev, p, 1);
3308                 if (mlx4_is_master(dev)) {
3309                         int i;
3310
3311                         for (i = 1; i <= ibdev->num_ports; i++) {
3312                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3313                                         == IB_LINK_LAYER_INFINIBAND)
3314                                         mlx4_ib_slave_alias_guid_event(ibdev,
3315                                                                        p, i,
3316                                                                        1);
3317                         }
3318                 }
3319                 return;
3320
3321         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3322                 if (mlx4_is_master(dev)) {
3323                         int i;
3324
3325                         for (i = 1; i <= ibdev->num_ports; i++) {
3326                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3327                                         == IB_LINK_LAYER_INFINIBAND)
3328                                         mlx4_ib_slave_alias_guid_event(ibdev,
3329                                                                        p, i,
3330                                                                        0);
3331                         }
3332                 }
3333                 /* here, p is the slave id */
3334                 do_slave_init(ibdev, p, 0);
3335                 return;
3336
3337         default:
3338                 return;
3339         }
3340
3341         ibev.device           = ibdev_ptr;
3342         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3343
3344         ib_dispatch_event(&ibev);
3345 }
3346
3347 static struct mlx4_interface mlx4_ib_interface = {
3348         .add            = mlx4_ib_add,
3349         .remove         = mlx4_ib_remove,
3350         .event          = mlx4_ib_event,
3351         .protocol       = MLX4_PROT_IB_IPV6,
3352         .flags          = MLX4_INTFF_BONDING
3353 };
3354
3355 static int __init mlx4_ib_init(void)
3356 {
3357         int err;
3358
3359         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3360         if (!wq)
3361                 return -ENOMEM;
3362
3363         err = mlx4_ib_mcg_init();
3364         if (err)
3365                 goto clean_wq;
3366
3367         err = mlx4_register_interface(&mlx4_ib_interface);
3368         if (err)
3369                 goto clean_mcg;
3370
3371         return 0;
3372
3373 clean_mcg:
3374         mlx4_ib_mcg_destroy();
3375
3376 clean_wq:
3377         destroy_workqueue(wq);
3378         return err;
3379 }
3380
3381 static void __exit mlx4_ib_cleanup(void)
3382 {
3383         mlx4_unregister_interface(&mlx4_ib_interface);
3384         mlx4_ib_mcg_destroy();
3385         destroy_workqueue(wq);
3386 }
3387
3388 module_init(mlx4_ib_init);
3389 module_exit(mlx4_ib_cleanup);