drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <linux/sched/mm.h>
  43 #include <linux/sched/task.h>
  44
  45 #include <net/ipv6.h>
  46 #include <net/addrconf.h>
  47 #include <net/devlink.h>
  48
  49 #include <rdma/ib_smi.h>
  50 #include <rdma/ib_user_verbs.h>
  51 #include <rdma/ib_addr.h>
  52 #include <rdma/ib_cache.h>
  53
  54 #include <net/bonding.h>
  55
  56 #include <linux/mlx4/driver.h>
  57 #include <linux/mlx4/cmd.h>
  58 #include <linux/mlx4/qp.h>
  59
  60 #include "mlx4_ib.h"
  61 #include <rdma/mlx4-abi.h>
  62
  63 #define DRV_NAME        MLX4_IB_DRV_NAME
  64 #define DRV_VERSION     "4.0-0"
  65
  66 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  67 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  68 #define MLX4_IB_CARD_REV_A0   0xA0
  69
  70 MODULE_AUTHOR("Roland Dreier");
  71 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  72 MODULE_LICENSE("Dual BSD/GPL");
  73
  74 int mlx4_ib_sm_guid_assign = 0;
  75 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  76 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  77
  78 static const char mlx4_ib_version[] =
  79         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  80         DRV_VERSION "\n";
  81
  82 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  83 static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device,
  84                                                     u8 port_num);
  85
  86 static struct workqueue_struct *wq;
  87
  88 static void init_query_mad(struct ib_smp *mad)
  89 {
  90         mad->base_version  = 1;
  91         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  92         mad->class_version = 1;
  93         mad->method        = IB_MGMT_METHOD_GET;
  94 }
  95
  96 static int check_flow_steering_support(struct mlx4_dev *dev)
  97 {
  98         int eth_num_ports = 0;
  99         int ib_num_ports = 0;
 100
 101         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
 102
 103         if (dmfs) {
 104                 int i;
 105                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 106                         eth_num_ports++;
 107                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 108                         ib_num_ports++;
 109                 dmfs &= (!ib_num_ports ||
 110                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 111                         (!eth_num_ports ||
 112                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 113                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 114                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 115                         dmfs = 0;
 116                 }
 117         }
 118         return dmfs;
 119 }
 120
 121 static int num_ib_ports(struct mlx4_dev *dev)
 122 {
 123         int ib_ports = 0;
 124         int i;
 125
 126         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 127                 ib_ports++;
 128
 129         return ib_ports;
 130 }
 131
 132 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 133 {
 134         struct mlx4_ib_dev *ibdev = to_mdev(device);
 135         struct net_device *dev;
 136
 137         rcu_read_lock();
 138         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 139
 140         if (dev) {
 141                 if (mlx4_is_bonded(ibdev->dev)) {
 142                         struct net_device *upper = NULL;
 143
 144                         upper = netdev_master_upper_dev_get_rcu(dev);
 145                         if (upper) {
 146                                 struct net_device *active;
 147
 148                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 149                                 if (active)
 150                                         dev = active;
 151                         }
 152                 }
 153         }
 154         if (dev)
 155                 dev_hold(dev);
 156
 157         rcu_read_unlock();
 158         return dev;
 159 }
 160
 161 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 162                                   struct mlx4_ib_dev *ibdev,
 163                                   u8 port_num)
 164 {
 165         struct mlx4_cmd_mailbox *mailbox;
 166         int err;
 167         struct mlx4_dev *dev = ibdev->dev;
 168         int i;
 169         union ib_gid *gid_tbl;
 170
 171         mailbox = mlx4_alloc_cmd_mailbox(dev);
 172         if (IS_ERR(mailbox))
 173                 return -ENOMEM;
 174
 175         gid_tbl = mailbox->buf;
 176
 177         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 178                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 179
 180         err = mlx4_cmd(dev, mailbox->dma,
 181                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 182                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 183                        MLX4_CMD_WRAPPED);
 184         if (mlx4_is_bonded(dev))
 185                 err += mlx4_cmd(dev, mailbox->dma,
 186                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 187                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 188                                 MLX4_CMD_WRAPPED);
 189
 190         mlx4_free_cmd_mailbox(dev, mailbox);
 191         return err;
 192 }
 193
 194 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 195                                      struct mlx4_ib_dev *ibdev,
 196                                      u8 port_num)
 197 {
 198         struct mlx4_cmd_mailbox *mailbox;
 199         int err;
 200         struct mlx4_dev *dev = ibdev->dev;
 201         int i;
 202         struct {
 203                 union ib_gid    gid;
 204                 __be32          rsrvd1[2];
 205                 __be16          rsrvd2;
 206                 u8              type;
 207                 u8              version;
 208                 __be32          rsrvd3;
 209         } *gid_tbl;
 210
 211         mailbox = mlx4_alloc_cmd_mailbox(dev);
 212         if (IS_ERR(mailbox))
 213                 return -ENOMEM;
 214
 215         gid_tbl = mailbox->buf;
 216         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 217                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 218                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 219                         gid_tbl[i].version = 2;
 220                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 221                                 gid_tbl[i].type = 1;
 222                 }
 223         }
 224
 225         err = mlx4_cmd(dev, mailbox->dma,
 226                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 227                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 228                        MLX4_CMD_WRAPPED);
 229         if (mlx4_is_bonded(dev))
 230                 err += mlx4_cmd(dev, mailbox->dma,
 231                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 232                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 233                                 MLX4_CMD_WRAPPED);
 234
 235         mlx4_free_cmd_mailbox(dev, mailbox);
 236         return err;
 237 }
 238
 239 static int mlx4_ib_update_gids(struct gid_entry *gids,
 240                                struct mlx4_ib_dev *ibdev,
 241                                u8 port_num)
 242 {
 243         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 244                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 245
 246         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 247 }
 248
 249 static int mlx4_ib_add_gid(struct ib_device *device,
 250                            u8 port_num,
 251                            unsigned int index,
 252                            const union ib_gid *gid,
 253                            const struct ib_gid_attr *attr,
 254                            void **context)
 255 {
 256         struct mlx4_ib_dev *ibdev = to_mdev(device);
 257         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 258         struct mlx4_port_gid_table   *port_gid_table;
 259         int free = -1, found = -1;
 260         int ret = 0;
 261         int hw_update = 0;
 262         int i;
 263         struct gid_entry *gids = NULL;
 264
 265         if (!rdma_cap_roce_gid_table(device, port_num))
 266                 return -EINVAL;
 267
 268         if (port_num > MLX4_MAX_PORTS)
 269                 return -EINVAL;
 270
 271         if (!context)
 272                 return -EINVAL;
 273
 274         port_gid_table = &iboe->gids[port_num - 1];
 275         spin_lock_bh(&iboe->lock);
 276         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 277                 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
 278                     (port_gid_table->gids[i].gid_type == attr->gid_type))  {
 279                         found = i;
 280                         break;
 281                 }
 282                 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
 283                         free = i; /* HW has space */
 284         }
 285
 286         if (found < 0) {
 287                 if (free < 0) {
 288                         ret = -ENOSPC;
 289                 } else {
 290                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 291                         if (!port_gid_table->gids[free].ctx) {
 292                                 ret = -ENOMEM;
 293                         } else {
 294                                 *context = port_gid_table->gids[free].ctx;
 295                                 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
 296                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 297                                 port_gid_table->gids[free].ctx->real_index = free;
 298                                 port_gid_table->gids[free].ctx->refcount = 1;
 299                                 hw_update = 1;
 300                         }
 301                 }
 302         } else {
 303                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 304                 *context = ctx;
 305                 ctx->refcount++;
 306         }
 307         if (!ret && hw_update) {
 308                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 309                 if (!gids) {
 310                         ret = -ENOMEM;
 311                 } else {
 312                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 313                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 314                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 315                         }
 316                 }
 317         }
 318         spin_unlock_bh(&iboe->lock);
 319
 320         if (!ret && hw_update) {
 321                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 322                 kfree(gids);
 323         }
 324
 325         return ret;
 326 }
 327
 328 static int mlx4_ib_del_gid(struct ib_device *device,
 329                            u8 port_num,
 330                            unsigned int index,
 331                            void **context)
 332 {
 333         struct gid_cache_context *ctx = *context;
 334         struct mlx4_ib_dev *ibdev = to_mdev(device);
 335         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 336         struct mlx4_port_gid_table   *port_gid_table;
 337         int ret = 0;
 338         int hw_update = 0;
 339         struct gid_entry *gids = NULL;
 340
 341         if (!rdma_cap_roce_gid_table(device, port_num))
 342                 return -EINVAL;
 343
 344         if (port_num > MLX4_MAX_PORTS)
 345                 return -EINVAL;
 346
 347         port_gid_table = &iboe->gids[port_num - 1];
 348         spin_lock_bh(&iboe->lock);
 349         if (ctx) {
 350                 ctx->refcount--;
 351                 if (!ctx->refcount) {
 352                         unsigned int real_index = ctx->real_index;
 353
 354                         memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
 355                         kfree(port_gid_table->gids[real_index].ctx);
 356                         port_gid_table->gids[real_index].ctx = NULL;
 357                         hw_update = 1;
 358                 }
 359         }
 360         if (!ret && hw_update) {
 361                 int i;
 362
 363                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 364                 if (!gids) {
 365                         ret = -ENOMEM;
 366                 } else {
 367                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 368                                 memcpy(&gids[i].gid,
 369                                        &port_gid_table->gids[i].gid,
 370                                        sizeof(union ib_gid));
 371                                 gids[i].gid_type =
 372                                     port_gid_table->gids[i].gid_type;
 373                         }
 374                 }
 375         }
 376         spin_unlock_bh(&iboe->lock);
 377
 378         if (!ret && hw_update) {
 379                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 380                 kfree(gids);
 381         }
 382         return ret;
 383 }
 384
 385 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 386                                     u8 port_num, int index)
 387 {
 388         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 389         struct gid_cache_context *ctx = NULL;
 390         union ib_gid gid;
 391         struct mlx4_port_gid_table   *port_gid_table;
 392         int real_index = -EINVAL;
 393         int i;
 394         int ret;
 395         unsigned long flags;
 396         struct ib_gid_attr attr;
 397
 398         if (port_num > MLX4_MAX_PORTS)
 399                 return -EINVAL;
 400
 401         if (mlx4_is_bonded(ibdev->dev))
 402                 port_num = 1;
 403
 404         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 405                 return index;
 406
 407         ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
 408         if (ret)
 409                 return ret;
 410
 411         if (attr.ndev)
 412                 dev_put(attr.ndev);
 413
 414         if (!memcmp(&gid, &zgid, sizeof(gid)))
 415                 return -EINVAL;
 416
 417         spin_lock_irqsave(&iboe->lock, flags);
 418         port_gid_table = &iboe->gids[port_num - 1];
 419
 420         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 421                 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
 422                     attr.gid_type == port_gid_table->gids[i].gid_type) {
 423                         ctx = port_gid_table->gids[i].ctx;
 424                         break;
 425                 }
 426         if (ctx)
 427                 real_index = ctx->real_index;
 428         spin_unlock_irqrestore(&iboe->lock, flags);
 429         return real_index;
 430 }
 431
 432 static int mlx4_ib_query_device(struct ib_device *ibdev,
 433                                 struct ib_device_attr *props,
 434                                 struct ib_udata *uhw)
 435 {
 436         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 437         struct ib_smp *in_mad  = NULL;
 438         struct ib_smp *out_mad = NULL;
 439         int err;
 440         int have_ib_ports;
 441         struct mlx4_uverbs_ex_query_device cmd;
 442         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 443         struct mlx4_clock_params clock_params;
 444
 445         if (uhw->inlen) {
 446                 if (uhw->inlen < sizeof(cmd))
 447                         return -EINVAL;
 448
 449                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 450                 if (err)
 451                         return err;
 452
 453                 if (cmd.comp_mask)
 454                         return -EINVAL;
 455
 456                 if (cmd.reserved)
 457                         return -EINVAL;
 458         }
 459
 460         resp.response_length = offsetof(typeof(resp), response_length) +
 461                 sizeof(resp.response_length);
 462         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 463         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 464         err = -ENOMEM;
 465         if (!in_mad || !out_mad)
 466                 goto out;
 467
 468         init_query_mad(in_mad);
 469         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 470
 471         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 472                            1, NULL, NULL, in_mad, out_mad);
 473         if (err)
 474                 goto out;
 475
 476         memset(props, 0, sizeof *props);
 477
 478         have_ib_ports = num_ib_ports(dev->dev);
 479
 480         props->fw_ver = dev->dev->caps.fw_ver;
 481         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 482                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 483                 IB_DEVICE_SYS_IMAGE_GUID                |
 484                 IB_DEVICE_RC_RNR_NAK_GEN                |
 485                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 486         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 487                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 488         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 489                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 490         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 491                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 492         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 493                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 494         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 495                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 496         if (dev->dev->caps.max_gso_sz &&
 497             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 498             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 499                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 500         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 501                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 502         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 503             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 504             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 505                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 506         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 507                 props->device_cap_flags |= IB_DEVICE_XRC;
 508         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 509                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 510         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 511                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 512                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 513                 else
 514                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 515         }
 516         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 517                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 518
 519         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 520
 521         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 522                 0xffffff;
 523         props->vendor_part_id      = dev->dev->persist->pdev->device;
 524         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 525         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 526
 527         props->max_mr_size         = ~0ull;
 528         props->page_size_cap       = dev->dev->caps.page_size_cap;
 529         props->max_qp              = dev->dev->quotas.qp;
 530         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 531         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 532                                          dev->dev->caps.max_rq_sg);
 533         props->max_sge_rd          = MLX4_MAX_SGE_RD;
 534         props->max_cq              = dev->dev->quotas.cq;
 535         props->max_cqe             = dev->dev->caps.max_cqes;
 536         props->max_mr              = dev->dev->quotas.mpt;
 537         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 538         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 539         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 540         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 541         props->max_srq             = dev->dev->quotas.srq;
 542         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 543         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 544         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 545         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 546         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 547                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 548         props->masked_atomic_cap   = props->atomic_cap;
 549         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 550         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 551         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 552         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 553                                            props->max_mcast_grp;
 554         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 555         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 556         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 557         props->max_ah = INT_MAX;
 558
 559         if ((dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
 560             (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
 561              mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET)) {
 562                 props->rss_caps.max_rwq_indirection_tables = props->max_qp;
 563                 props->rss_caps.max_rwq_indirection_table_size =
 564                         dev->dev->caps.max_rss_tbl_sz;
 565                 props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
 566                 props->max_wq_type_rq = props->max_qp;
 567         }
 568
 569         props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
 570         props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
 571
 572         if (!mlx4_is_slave(dev->dev))
 573                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 574
 575         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 576                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 577                 if (!err && !mlx4_is_slave(dev->dev)) {
 578                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 579                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 580                 }
 581         }
 582
 583         if (uhw->outlen >= resp.response_length +
 584             sizeof(resp.max_inl_recv_sz)) {
 585                 resp.response_length += sizeof(resp.max_inl_recv_sz);
 586                 resp.max_inl_recv_sz  = dev->dev->caps.max_rq_sg *
 587                         sizeof(struct mlx4_wqe_data_seg);
 588         }
 589
 590         if (uhw->outlen >= resp.response_length + sizeof(resp.rss_caps)) {
 591                 resp.response_length += sizeof(resp.rss_caps);
 592                 if (props->rss_caps.supported_qpts) {
 593                         resp.rss_caps.rx_hash_function =
 594                                 MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
 595
 596                         resp.rss_caps.rx_hash_fields_mask =
 597                                 MLX4_IB_RX_HASH_SRC_IPV4 |
 598                                 MLX4_IB_RX_HASH_DST_IPV4 |
 599                                 MLX4_IB_RX_HASH_SRC_IPV6 |
 600                                 MLX4_IB_RX_HASH_DST_IPV6 |
 601                                 MLX4_IB_RX_HASH_SRC_PORT_TCP |
 602                                 MLX4_IB_RX_HASH_DST_PORT_TCP |
 603                                 MLX4_IB_RX_HASH_SRC_PORT_UDP |
 604                                 MLX4_IB_RX_HASH_DST_PORT_UDP;
 605
 606                         if (dev->dev->caps.tunnel_offload_mode ==
 607                             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
 608                                 resp.rss_caps.rx_hash_fields_mask |=
 609                                         MLX4_IB_RX_HASH_INNER;
 610                 }
 611         }
 612
 613         if (uhw->outlen) {
 614                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 615                 if (err)
 616                         goto out;
 617         }
 618 out:
 619         kfree(in_mad);
 620         kfree(out_mad);
 621
 622         return err;
 623 }
 624
 625 static enum rdma_link_layer
 626 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 627 {
 628         struct mlx4_dev *dev = to_mdev(device)->dev;
 629
 630         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 631                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 632 }
 633
 634 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 635                               struct ib_port_attr *props, int netw_view)
 636 {
 637         struct ib_smp *in_mad  = NULL;
 638         struct ib_smp *out_mad = NULL;
 639         int ext_active_speed;
 640         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 641         int err = -ENOMEM;
 642
 643         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 644         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 645         if (!in_mad || !out_mad)
 646                 goto out;
 647
 648         init_query_mad(in_mad);
 649         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 650         in_mad->attr_mod = cpu_to_be32(port);
 651
 652         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 653                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 654
 655         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 656                                 in_mad, out_mad);
 657         if (err)
 658                 goto out;
 659
 660
 661         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 662         props->lmc              = out_mad->data[34] & 0x7;
 663         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 664         props->sm_sl            = out_mad->data[36] & 0xf;
 665         props->state            = out_mad->data[32] & 0xf;
 666         props->phys_state       = out_mad->data[33] >> 4;
 667         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 668         if (netw_view)
 669                 props->gid_tbl_len = out_mad->data[50];
 670         else
 671                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 672         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 673         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 674         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 675         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 676         props->active_width     = out_mad->data[31] & 0xf;
 677         props->active_speed     = out_mad->data[35] >> 4;
 678         props->max_mtu          = out_mad->data[41] & 0xf;
 679         props->active_mtu       = out_mad->data[36] >> 4;
 680         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 681         props->max_vl_num       = out_mad->data[37] >> 4;
 682         props->init_type_reply  = out_mad->data[41] >> 4;
 683
 684         /* Check if extended speeds (EDR/FDR/...) are supported */
 685         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 686                 ext_active_speed = out_mad->data[62] >> 4;
 687
 688                 switch (ext_active_speed) {
 689                 case 1:
 690                         props->active_speed = IB_SPEED_FDR;
 691                         break;
 692                 case 2:
 693                         props->active_speed = IB_SPEED_EDR;
 694                         break;
 695                 }
 696         }
 697
 698         /* If reported active speed is QDR, check if is FDR-10 */
 699         if (props->active_speed == IB_SPEED_QDR) {
 700                 init_query_mad(in_mad);
 701                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 702                 in_mad->attr_mod = cpu_to_be32(port);
 703
 704                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 705                                    NULL, NULL, in_mad, out_mad);
 706                 if (err)
 707                         goto out;
 708
 709                 /* Checking LinkSpeedActive for FDR-10 */
 710                 if (out_mad->data[15] & 0x1)
 711                         props->active_speed = IB_SPEED_FDR10;
 712         }
 713
 714         /* Avoid wrong speed value returned by FW if the IB link is down. */
 715         if (props->state == IB_PORT_DOWN)
 716                  props->active_speed = IB_SPEED_SDR;
 717
 718 out:
 719         kfree(in_mad);
 720         kfree(out_mad);
 721         return err;
 722 }
 723
 724 static u8 state_to_phys_state(enum ib_port_state state)
 725 {
 726         return state == IB_PORT_ACTIVE ? 5 : 3;
 727 }
 728
 729 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 730                                struct ib_port_attr *props)
 731 {
 732
 733         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 734         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 735         struct net_device *ndev;
 736         enum ib_mtu tmp;
 737         struct mlx4_cmd_mailbox *mailbox;
 738         int err = 0;
 739         int is_bonded = mlx4_is_bonded(mdev->dev);
 740
 741         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 742         if (IS_ERR(mailbox))
 743                 return PTR_ERR(mailbox);
 744
 745         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 746                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 747                            MLX4_CMD_WRAPPED);
 748         if (err)
 749                 goto out;
 750
 751         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ||
 752                                    (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 753                                            IB_WIDTH_4X : IB_WIDTH_1X;
 754         props->active_speed     =  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 755                                            IB_SPEED_FDR : IB_SPEED_QDR;
 756         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 757         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 758         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 759         props->pkey_tbl_len     = 1;
 760         props->max_mtu          = IB_MTU_4096;
 761         props->max_vl_num       = 2;
 762         props->state            = IB_PORT_DOWN;
 763         props->phys_state       = state_to_phys_state(props->state);
 764         props->active_mtu       = IB_MTU_256;
 765         spin_lock_bh(&iboe->lock);
 766         ndev = iboe->netdevs[port - 1];
 767         if (ndev && is_bonded) {
 768                 rcu_read_lock(); /* required to get upper dev */
 769                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 770                 rcu_read_unlock();
 771         }
 772         if (!ndev)
 773                 goto out_unlock;
 774
 775         tmp = iboe_get_mtu(ndev->mtu);
 776         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 777
 778         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 779                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 780         props->phys_state       = state_to_phys_state(props->state);
 781 out_unlock:
 782         spin_unlock_bh(&iboe->lock);
 783 out:
 784         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 785         return err;
 786 }
 787
 788 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 789                          struct ib_port_attr *props, int netw_view)
 790 {
 791         int err;
 792
 793         /* props being zeroed by the caller, avoid zeroing it here */
 794
 795         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 796                 ib_link_query_port(ibdev, port, props, netw_view) :
 797                                 eth_link_query_port(ibdev, port, props);
 798
 799         return err;
 800 }
 801
 802 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 803                               struct ib_port_attr *props)
 804 {
 805         /* returns host view */
 806         return __mlx4_ib_query_port(ibdev, port, props, 0);
 807 }
 808
 809 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 810                         union ib_gid *gid, int netw_view)
 811 {
 812         struct ib_smp *in_mad  = NULL;
 813         struct ib_smp *out_mad = NULL;
 814         int err = -ENOMEM;
 815         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 816         int clear = 0;
 817         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 818
 819         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 820         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 821         if (!in_mad || !out_mad)
 822                 goto out;
 823
 824         init_query_mad(in_mad);
 825         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 826         in_mad->attr_mod = cpu_to_be32(port);
 827
 828         if (mlx4_is_mfunc(dev->dev) && netw_view)
 829                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 830
 831         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 832         if (err)
 833                 goto out;
 834
 835         memcpy(gid->raw, out_mad->data + 8, 8);
 836
 837         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 838                 if (index) {
 839                         /* For any index > 0, return the null guid */
 840                         err = 0;
 841                         clear = 1;
 842                         goto out;
 843                 }
 844         }
 845
 846         init_query_mad(in_mad);
 847         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 848         in_mad->attr_mod = cpu_to_be32(index / 8);
 849
 850         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 851                            NULL, NULL, in_mad, out_mad);
 852         if (err)
 853                 goto out;
 854
 855         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 856
 857 out:
 858         if (clear)
 859                 memset(gid->raw + 8, 0, 8);
 860         kfree(in_mad);
 861         kfree(out_mad);
 862         return err;
 863 }
 864
 865 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 866                              union ib_gid *gid)
 867 {
 868         int ret;
 869
 870         if (rdma_protocol_ib(ibdev, port))
 871                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 872
 873         if (!rdma_protocol_roce(ibdev, port))
 874                 return -ENODEV;
 875
 876         if (!rdma_cap_roce_gid_table(ibdev, port))
 877                 return -ENODEV;
 878
 879         ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
 880         if (ret == -EAGAIN) {
 881                 memcpy(gid, &zgid, sizeof(*gid));
 882                 return 0;
 883         }
 884
 885         return ret;
 886 }
 887
 888 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
 889 {
 890         union sl2vl_tbl_to_u64 sl2vl64;
 891         struct ib_smp *in_mad  = NULL;
 892         struct ib_smp *out_mad = NULL;
 893         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 894         int err = -ENOMEM;
 895         int jj;
 896
 897         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 898                 *sl2vl_tbl = 0;
 899                 return 0;
 900         }
 901
 902         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 903         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 904         if (!in_mad || !out_mad)
 905                 goto out;
 906
 907         init_query_mad(in_mad);
 908         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 909         in_mad->attr_mod = 0;
 910
 911         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 912                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 913
 914         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 915                            in_mad, out_mad);
 916         if (err)
 917                 goto out;
 918
 919         for (jj = 0; jj < 8; jj++)
 920                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 921         *sl2vl_tbl = sl2vl64.sl64;
 922
 923 out:
 924         kfree(in_mad);
 925         kfree(out_mad);
 926         return err;
 927 }
 928
 929 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 930 {
 931         u64 sl2vl;
 932         int i;
 933         int err;
 934
 935         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 936                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 937                         continue;
 938                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 939                 if (err) {
 940                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 941                                i, err);
 942                         sl2vl = 0;
 943                 }
 944                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 945         }
 946 }
 947
 948 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 949                          u16 *pkey, int netw_view)
 950 {
 951         struct ib_smp *in_mad  = NULL;
 952         struct ib_smp *out_mad = NULL;
 953         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 954         int err = -ENOMEM;
 955
 956         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 957         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 958         if (!in_mad || !out_mad)
 959                 goto out;
 960
 961         init_query_mad(in_mad);
 962         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 963         in_mad->attr_mod = cpu_to_be32(index / 32);
 964
 965         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 966                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 967
 968         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 969                            in_mad, out_mad);
 970         if (err)
 971                 goto out;
 972
 973         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 974
 975 out:
 976         kfree(in_mad);
 977         kfree(out_mad);
 978         return err;
 979 }
 980
 981 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 982 {
 983         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 984 }
 985
 986 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 987                                  struct ib_device_modify *props)
 988 {
 989         struct mlx4_cmd_mailbox *mailbox;
 990         unsigned long flags;
 991
 992         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 993                 return -EOPNOTSUPP;
 994
 995         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 996                 return 0;
 997
 998         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 999                 return -EOPNOTSUPP;
1000
1001         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
1002         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1003         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
1004
1005         /*
1006          * If possible, pass node desc to FW, so it can generate
1007          * a 144 trap.  If cmd fails, just ignore.
1008          */
1009         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
1010         if (IS_ERR(mailbox))
1011                 return 0;
1012
1013         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
1014         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
1015                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1016
1017         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
1018
1019         return 0;
1020 }
1021
1022 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
1023                             u32 cap_mask)
1024 {
1025         struct mlx4_cmd_mailbox *mailbox;
1026         int err;
1027
1028         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
1029         if (IS_ERR(mailbox))
1030                 return PTR_ERR(mailbox);
1031
1032         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1033                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
1034                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
1035         } else {
1036                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
1037                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
1038         }
1039
1040         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
1041                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1042                        MLX4_CMD_WRAPPED);
1043
1044         mlx4_free_cmd_mailbox(dev->dev, mailbox);
1045         return err;
1046 }
1047
1048 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1049                                struct ib_port_modify *props)
1050 {
1051         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1052         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1053         struct ib_port_attr attr;
1054         u32 cap_mask;
1055         int err;
1056
1057         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1058          * of whether port link layer is ETH or IB. For ETH ports, qkey
1059          * violations and port capabilities are not meaningful.
1060          */
1061         if (is_eth)
1062                 return 0;
1063
1064         mutex_lock(&mdev->cap_mask_mutex);
1065
1066         err = ib_query_port(ibdev, port, &attr);
1067         if (err)
1068                 goto out;
1069
1070         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1071                 ~props->clr_port_cap_mask;
1072
1073         err = mlx4_ib_SET_PORT(mdev, port,
1074                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1075                                cap_mask);
1076
1077 out:
1078         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1079         return err;
1080 }
1081
1082 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
1083                                                   struct ib_udata *udata)
1084 {
1085         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1086         struct mlx4_ib_ucontext *context;
1087         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1088         struct mlx4_ib_alloc_ucontext_resp resp;
1089         int err;
1090
1091         if (!dev->ib_active)
1092                 return ERR_PTR(-EAGAIN);
1093
1094         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1095                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1096                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1097                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1098         } else {
1099                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1100                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1101                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1102                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1103                 resp.cqe_size         = dev->dev->caps.cqe_size;
1104         }
1105
1106         context = kzalloc(sizeof(*context), GFP_KERNEL);
1107         if (!context)
1108                 return ERR_PTR(-ENOMEM);
1109
1110         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1111         if (err) {
1112                 kfree(context);
1113                 return ERR_PTR(err);
1114         }
1115
1116         INIT_LIST_HEAD(&context->db_page_list);
1117         mutex_init(&context->db_page_mutex);
1118
1119         INIT_LIST_HEAD(&context->wqn_ranges_list);
1120         mutex_init(&context->wqn_ranges_mutex);
1121
1122         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1123                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1124         else
1125                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1126
1127         if (err) {
1128                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1129                 kfree(context);
1130                 return ERR_PTR(-EFAULT);
1131         }
1132
1133         return &context->ibucontext;
1134 }
1135
1136 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1137 {
1138         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1139
1140         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1141         kfree(context);
1142
1143         return 0;
1144 }
1145
1146 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
1147 {
1148         /* vma_open is called when a new VMA is created on top of our VMA.
1149          * This is done through either mremap flow or split_vma (usually due
1150          * to mlock, madvise, munmap, etc.). We do not support a clone of the
1151          * vma, as this VMA is strongly hardware related. Therefore we set the
1152          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1153          * calling us again and trying to do incorrect actions. We assume that
1154          * the original vma size is exactly a single page that there will be no
1155          * "splitting" operations on.
1156          */
1157         area->vm_ops = NULL;
1158 }
1159
1160 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
1161 {
1162         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1163
1164         /* It's guaranteed that all VMAs opened on a FD are closed before the
1165          * file itself is closed, therefore no sync is needed with the regular
1166          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1167          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1168          * The close operation is usually called under mm->mmap_sem except when
1169          * process is exiting.  The exiting case is handled explicitly as part
1170          * of mlx4_ib_disassociate_ucontext.
1171          */
1172         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1173                                 area->vm_private_data;
1174
1175         /* set the vma context pointer to null in the mlx4_ib driver's private
1176          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1177          */
1178         mlx4_ib_vma_priv_data->vma = NULL;
1179 }
1180
1181 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1182         .open = mlx4_ib_vma_open,
1183         .close = mlx4_ib_vma_close
1184 };
1185
1186 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1187 {
1188         int i;
1189         int ret = 0;
1190         struct vm_area_struct *vma;
1191         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1192         struct task_struct *owning_process  = NULL;
1193         struct mm_struct   *owning_mm       = NULL;
1194
1195         owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1196         if (!owning_process)
1197                 return;
1198
1199         owning_mm = get_task_mm(owning_process);
1200         if (!owning_mm) {
1201                 pr_info("no mm, disassociate ucontext is pending task termination\n");
1202                 while (1) {
1203                         /* make sure that task is dead before returning, it may
1204                          * prevent a rare case of module down in parallel to a
1205                          * call to mlx4_ib_vma_close.
1206                          */
1207                         put_task_struct(owning_process);
1208                         usleep_range(1000, 2000);
1209                         owning_process = get_pid_task(ibcontext->tgid,
1210                                                       PIDTYPE_PID);
1211                         if (!owning_process ||
1212                             owning_process->state == TASK_DEAD) {
1213                                 pr_info("disassociate ucontext done, task was terminated\n");
1214                                 /* in case task was dead need to release the task struct */
1215                                 if (owning_process)
1216                                         put_task_struct(owning_process);
1217                                 return;
1218                         }
1219                 }
1220         }
1221
1222         /* need to protect from a race on closing the vma as part of
1223          * mlx4_ib_vma_close().
1224          */
1225         down_write(&owning_mm->mmap_sem);
1226         for (i = 0; i < HW_BAR_COUNT; i++) {
1227                 vma = context->hw_bar_info[i].vma;
1228                 if (!vma)
1229                         continue;
1230
1231                 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1232                                    context->hw_bar_info[i].vma->vm_start,
1233                                    PAGE_SIZE);
1234                 if (ret) {
1235                         pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1236                         BUG_ON(1);
1237                 }
1238
1239                 context->hw_bar_info[i].vma->vm_flags &=
1240                         ~(VM_SHARED | VM_MAYSHARE);
1241                 /* context going to be destroyed, should not access ops any more */
1242                 context->hw_bar_info[i].vma->vm_ops = NULL;
1243         }
1244
1245         up_write(&owning_mm->mmap_sem);
1246         mmput(owning_mm);
1247         put_task_struct(owning_process);
1248 }
1249
1250 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1251                                  struct mlx4_ib_vma_private_data *vma_private_data)
1252 {
1253         vma_private_data->vma = vma;
1254         vma->vm_private_data = vma_private_data;
1255         vma->vm_ops =  &mlx4_ib_vm_ops;
1256 }
1257
1258 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1259 {
1260         struct mlx4_ib_dev *dev = to_mdev(context->device);
1261         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1262
1263         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1264                 return -EINVAL;
1265
1266         if (vma->vm_pgoff == 0) {
1267                 /* We prevent double mmaping on same context */
1268                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1269                         return -EINVAL;
1270
1271                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1272
1273                 if (io_remap_pfn_range(vma, vma->vm_start,
1274                                        to_mucontext(context)->uar.pfn,
1275                                        PAGE_SIZE, vma->vm_page_prot))
1276                         return -EAGAIN;
1277
1278                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1279
1280         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1281                 /* We prevent double mmaping on same context */
1282                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1283                         return -EINVAL;
1284
1285                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1286
1287                 if (io_remap_pfn_range(vma, vma->vm_start,
1288                                        to_mucontext(context)->uar.pfn +
1289                                        dev->dev->caps.num_uars,
1290                                        PAGE_SIZE, vma->vm_page_prot))
1291                         return -EAGAIN;
1292
1293                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1294
1295         } else if (vma->vm_pgoff == 3) {
1296                 struct mlx4_clock_params params;
1297                 int ret;
1298
1299                 /* We prevent double mmaping on same context */
1300                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1301                         return -EINVAL;
1302
1303                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1304
1305                 if (ret)
1306                         return ret;
1307
1308                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1309                 if (io_remap_pfn_range(vma, vma->vm_start,
1310                                        (pci_resource_start(dev->dev->persist->pdev,
1311                                                            params.bar) +
1312                                         params.offset)
1313                                        >> PAGE_SHIFT,
1314                                        PAGE_SIZE, vma->vm_page_prot))
1315                         return -EAGAIN;
1316
1317                 mlx4_ib_set_vma_data(vma,
1318                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1319         } else {
1320                 return -EINVAL;
1321         }
1322
1323         return 0;
1324 }
1325
1326 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1327                                       struct ib_ucontext *context,
1328                                       struct ib_udata *udata)
1329 {
1330         struct mlx4_ib_pd *pd;
1331         int err;
1332
1333         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1334         if (!pd)
1335                 return ERR_PTR(-ENOMEM);
1336
1337         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1338         if (err) {
1339                 kfree(pd);
1340                 return ERR_PTR(err);
1341         }
1342
1343         if (context)
1344                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1345                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1346                         kfree(pd);
1347                         return ERR_PTR(-EFAULT);
1348                 }
1349
1350         return &pd->ibpd;
1351 }
1352
1353 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1354 {
1355         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1356         kfree(pd);
1357
1358         return 0;
1359 }
1360
1361 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1362                                           struct ib_ucontext *context,
1363                                           struct ib_udata *udata)
1364 {
1365         struct mlx4_ib_xrcd *xrcd;
1366         struct ib_cq_init_attr cq_attr = {};
1367         int err;
1368
1369         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1370                 return ERR_PTR(-ENOSYS);
1371
1372         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1373         if (!xrcd)
1374                 return ERR_PTR(-ENOMEM);
1375
1376         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1377         if (err)
1378                 goto err1;
1379
1380         xrcd->pd = ib_alloc_pd(ibdev, 0);
1381         if (IS_ERR(xrcd->pd)) {
1382                 err = PTR_ERR(xrcd->pd);
1383                 goto err2;
1384         }
1385
1386         cq_attr.cqe = 1;
1387         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1388         if (IS_ERR(xrcd->cq)) {
1389                 err = PTR_ERR(xrcd->cq);
1390                 goto err3;
1391         }
1392
1393         return &xrcd->ibxrcd;
1394
1395 err3:
1396         ib_dealloc_pd(xrcd->pd);
1397 err2:
1398         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1399 err1:
1400         kfree(xrcd);
1401         return ERR_PTR(err);
1402 }
1403
1404 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1405 {
1406         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1407         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1408         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1409         kfree(xrcd);
1410
1411         return 0;
1412 }
1413
1414 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1415 {
1416         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1417         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1418         struct mlx4_ib_gid_entry *ge;
1419
1420         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1421         if (!ge)
1422                 return -ENOMEM;
1423
1424         ge->gid = *gid;
1425         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1426                 ge->port = mqp->port;
1427                 ge->added = 1;
1428         }
1429
1430         mutex_lock(&mqp->mutex);
1431         list_add_tail(&ge->list, &mqp->gid_list);
1432         mutex_unlock(&mqp->mutex);
1433
1434         return 0;
1435 }
1436
1437 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1438                                           struct mlx4_ib_counters *ctr_table)
1439 {
1440         struct counter_index *counter, *tmp_count;
1441
1442         mutex_lock(&ctr_table->mutex);
1443         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1444                                  list) {
1445                 if (counter->allocated)
1446                         mlx4_counter_free(ibdev->dev, counter->index);
1447                 list_del(&counter->list);
1448                 kfree(counter);
1449         }
1450         mutex_unlock(&ctr_table->mutex);
1451 }
1452
1453 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1454                    union ib_gid *gid)
1455 {
1456         struct net_device *ndev;
1457         int ret = 0;
1458
1459         if (!mqp->port)
1460                 return 0;
1461
1462         spin_lock_bh(&mdev->iboe.lock);
1463         ndev = mdev->iboe.netdevs[mqp->port - 1];
1464         if (ndev)
1465                 dev_hold(ndev);
1466         spin_unlock_bh(&mdev->iboe.lock);
1467
1468         if (ndev) {
1469                 ret = 1;
1470                 dev_put(ndev);
1471         }
1472
1473         return ret;
1474 }
1475
1476 struct mlx4_ib_steering {
1477         struct list_head list;
1478         struct mlx4_flow_reg_id reg_id;
1479         union ib_gid gid;
1480 };
1481
1482 #define LAST_ETH_FIELD vlan_tag
1483 #define LAST_IB_FIELD sl
1484 #define LAST_IPV4_FIELD dst_ip
1485 #define LAST_TCP_UDP_FIELD src_port
1486
1487 /* Field is the last supported field */
1488 #define FIELDS_NOT_SUPPORTED(filter, field)\
1489         memchr_inv((void *)&filter.field  +\
1490                    sizeof(filter.field), 0,\
1491                    sizeof(filter) -\
1492                    offsetof(typeof(filter), field) -\
1493                    sizeof(filter.field))
1494
1495 static int parse_flow_attr(struct mlx4_dev *dev,
1496                            u32 qp_num,
1497                            union ib_flow_spec *ib_spec,
1498                            struct _rule_hw *mlx4_spec)
1499 {
1500         enum mlx4_net_trans_rule_id type;
1501
1502         switch (ib_spec->type) {
1503         case IB_FLOW_SPEC_ETH:
1504                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1505                         return -ENOTSUPP;
1506
1507                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1508                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1509                        ETH_ALEN);
1510                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1511                        ETH_ALEN);
1512                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1513                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1514                 break;
1515         case IB_FLOW_SPEC_IB:
1516                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1517                         return -ENOTSUPP;
1518
1519                 type = MLX4_NET_TRANS_RULE_ID_IB;
1520                 mlx4_spec->ib.l3_qpn =
1521                         cpu_to_be32(qp_num);
1522                 mlx4_spec->ib.qpn_mask =
1523                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1524                 break;
1525
1526
1527         case IB_FLOW_SPEC_IPV4:
1528                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1529                         return -ENOTSUPP;
1530
1531                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1532                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1533                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1534                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1535                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1536                 break;
1537
1538         case IB_FLOW_SPEC_TCP:
1539         case IB_FLOW_SPEC_UDP:
1540                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1541                         return -ENOTSUPP;
1542
1543                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1544                                         MLX4_NET_TRANS_RULE_ID_TCP :
1545                                         MLX4_NET_TRANS_RULE_ID_UDP;
1546                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1547                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1548                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1549                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1550                 break;
1551
1552         default:
1553                 return -EINVAL;
1554         }
1555         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1556             mlx4_hw_rule_sz(dev, type) < 0)
1557                 return -EINVAL;
1558         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1559         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1560         return mlx4_hw_rule_sz(dev, type);
1561 }
1562
1563 struct default_rules {
1564         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1565         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1566         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1567         __u8  link_layer;
1568 };
1569 static const struct default_rules default_table[] = {
1570         {
1571                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1572                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1573                 .rules_create_list = {IB_FLOW_SPEC_IB},
1574                 .link_layer = IB_LINK_LAYER_INFINIBAND
1575         }
1576 };
1577
1578 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1579                                          struct ib_flow_attr *flow_attr)
1580 {
1581         int i, j, k;
1582         void *ib_flow;
1583         const struct default_rules *pdefault_rules = default_table;
1584         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1585
1586         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1587                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1588                 memset(&field_types, 0, sizeof(field_types));
1589
1590                 if (link_layer != pdefault_rules->link_layer)
1591                         continue;
1592
1593                 ib_flow = flow_attr + 1;
1594                 /* we assume the specs are sorted */
1595                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1596                      j < flow_attr->num_of_specs; k++) {
1597                         union ib_flow_spec *current_flow =
1598                                 (union ib_flow_spec *)ib_flow;
1599
1600                         /* same layer but different type */
1601                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1602                              (pdefault_rules->mandatory_fields[k] &
1603                               IB_FLOW_SPEC_LAYER_MASK)) &&
1604                             (current_flow->type !=
1605                              pdefault_rules->mandatory_fields[k]))
1606                                 goto out;
1607
1608                         /* same layer, try match next one */
1609                         if (current_flow->type ==
1610                             pdefault_rules->mandatory_fields[k]) {
1611                                 j++;
1612                                 ib_flow +=
1613                                         ((union ib_flow_spec *)ib_flow)->size;
1614                         }
1615                 }
1616
1617                 ib_flow = flow_attr + 1;
1618                 for (j = 0; j < flow_attr->num_of_specs;
1619                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1620                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1621                                 /* same layer and same type */
1622                                 if (((union ib_flow_spec *)ib_flow)->type ==
1623                                     pdefault_rules->mandatory_not_fields[k])
1624                                         goto out;
1625
1626                 return i;
1627         }
1628 out:
1629         return -1;
1630 }
1631
1632 static int __mlx4_ib_create_default_rules(
1633                 struct mlx4_ib_dev *mdev,
1634                 struct ib_qp *qp,
1635                 const struct default_rules *pdefault_rules,
1636                 struct _rule_hw *mlx4_spec) {
1637         int size = 0;
1638         int i;
1639
1640         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1641                 int ret;
1642                 union ib_flow_spec ib_spec;
1643                 switch (pdefault_rules->rules_create_list[i]) {
1644                 case 0:
1645                         /* no rule */
1646                         continue;
1647                 case IB_FLOW_SPEC_IB:
1648                         ib_spec.type = IB_FLOW_SPEC_IB;
1649                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1650
1651                         break;
1652                 default:
1653                         /* invalid rule */
1654                         return -EINVAL;
1655                 }
1656                 /* We must put empty rule, qpn is being ignored */
1657                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1658                                       mlx4_spec);
1659                 if (ret < 0) {
1660                         pr_info("invalid parsing\n");
1661                         return -EINVAL;
1662                 }
1663
1664                 mlx4_spec = (void *)mlx4_spec + ret;
1665                 size += ret;
1666         }
1667         return size;
1668 }
1669
1670 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1671                           int domain,
1672                           enum mlx4_net_trans_promisc_mode flow_type,
1673                           u64 *reg_id)
1674 {
1675         int ret, i;
1676         int size = 0;
1677         void *ib_flow;
1678         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1679         struct mlx4_cmd_mailbox *mailbox;
1680         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1681         int default_flow;
1682
1683         static const u16 __mlx4_domain[] = {
1684                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1685                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1686                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1687                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1688         };
1689
1690         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1691                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1692                 return -EINVAL;
1693         }
1694
1695         if (domain >= IB_FLOW_DOMAIN_NUM) {
1696                 pr_err("Invalid domain value %d\n", domain);
1697                 return -EINVAL;
1698         }
1699
1700         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1701                 return -EINVAL;
1702
1703         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1704         if (IS_ERR(mailbox))
1705                 return PTR_ERR(mailbox);
1706         ctrl = mailbox->buf;
1707
1708         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1709                                  flow_attr->priority);
1710         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1711         ctrl->port = flow_attr->port;
1712         ctrl->qpn = cpu_to_be32(qp->qp_num);
1713
1714         ib_flow = flow_attr + 1;
1715         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1716         /* Add default flows */
1717         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1718         if (default_flow >= 0) {
1719                 ret = __mlx4_ib_create_default_rules(
1720                                 mdev, qp, default_table + default_flow,
1721                                 mailbox->buf + size);
1722                 if (ret < 0) {
1723                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1724                         return -EINVAL;
1725                 }
1726                 size += ret;
1727         }
1728         for (i = 0; i < flow_attr->num_of_specs; i++) {
1729                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1730                                       mailbox->buf + size);
1731                 if (ret < 0) {
1732                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1733                         return -EINVAL;
1734                 }
1735                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1736                 size += ret;
1737         }
1738
1739         if (mlx4_is_master(mdev->dev) && flow_type == MLX4_FS_REGULAR &&
1740             flow_attr->num_of_specs == 1) {
1741                 struct _rule_hw *rule_header = (struct _rule_hw *)(ctrl + 1);
1742                 enum ib_flow_spec_type header_spec =
1743                         ((union ib_flow_spec *)(flow_attr + 1))->type;
1744
1745                 if (header_spec == IB_FLOW_SPEC_ETH)
1746                         mlx4_handle_eth_header_mcast_prio(ctrl, rule_header);
1747         }
1748
1749         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1750                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1751                            MLX4_CMD_NATIVE);
1752         if (ret == -ENOMEM)
1753                 pr_err("mcg table is full. Fail to register network rule.\n");
1754         else if (ret == -ENXIO)
1755                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1756         else if (ret)
1757                 pr_err("Invalid argument. Fail to register network rule.\n");
1758
1759         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1760         return ret;
1761 }
1762
1763 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1764 {
1765         int err;
1766         err = mlx4_cmd(dev, reg_id, 0, 0,
1767                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1768                        MLX4_CMD_NATIVE);
1769         if (err)
1770                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1771                        reg_id);
1772         return err;
1773 }
1774
1775 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1776                                     u64 *reg_id)
1777 {
1778         void *ib_flow;
1779         union ib_flow_spec *ib_spec;
1780         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1781         int err = 0;
1782
1783         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1784             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1785                 return 0; /* do nothing */
1786
1787         ib_flow = flow_attr + 1;
1788         ib_spec = (union ib_flow_spec *)ib_flow;
1789
1790         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1791                 return 0; /* do nothing */
1792
1793         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1794                                     flow_attr->port, qp->qp_num,
1795                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1796                                     reg_id);
1797         return err;
1798 }
1799
1800 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1801                                       struct ib_flow_attr *flow_attr,
1802                                       enum mlx4_net_trans_promisc_mode *type)
1803 {
1804         int err = 0;
1805
1806         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1807             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1808             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1809                 return -EOPNOTSUPP;
1810         }
1811
1812         if (flow_attr->num_of_specs == 0) {
1813                 type[0] = MLX4_FS_MC_SNIFFER;
1814                 type[1] = MLX4_FS_UC_SNIFFER;
1815         } else {
1816                 union ib_flow_spec *ib_spec;
1817
1818                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1819                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1820                         return -EINVAL;
1821
1822                 /* if all is zero than MC and UC */
1823                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1824                         type[0] = MLX4_FS_MC_SNIFFER;
1825                         type[1] = MLX4_FS_UC_SNIFFER;
1826                 } else {
1827                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1828                                             ib_spec->eth.mask.dst_mac[1],
1829                                             ib_spec->eth.mask.dst_mac[2],
1830                                             ib_spec->eth.mask.dst_mac[3],
1831                                             ib_spec->eth.mask.dst_mac[4],
1832                                             ib_spec->eth.mask.dst_mac[5]};
1833
1834                         /* Above xor was only on MC bit, non empty mask is valid
1835                          * only if this bit is set and rest are zero.
1836                          */
1837                         if (!is_zero_ether_addr(&mac[0]))
1838                                 return -EINVAL;
1839
1840                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1841                                 type[0] = MLX4_FS_MC_SNIFFER;
1842                         else
1843                                 type[0] = MLX4_FS_UC_SNIFFER;
1844                 }
1845         }
1846
1847         return err;
1848 }
1849
1850 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1851                                     struct ib_flow_attr *flow_attr,
1852                                     int domain)
1853 {
1854         int err = 0, i = 0, j = 0;
1855         struct mlx4_ib_flow *mflow;
1856         enum mlx4_net_trans_promisc_mode type[2];
1857         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1858         int is_bonded = mlx4_is_bonded(dev);
1859
1860         if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1861                 return ERR_PTR(-EINVAL);
1862
1863         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1864             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1865                 return ERR_PTR(-EOPNOTSUPP);
1866
1867         memset(type, 0, sizeof(type));
1868
1869         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1870         if (!mflow) {
1871                 err = -ENOMEM;
1872                 goto err_free;
1873         }
1874
1875         switch (flow_attr->type) {
1876         case IB_FLOW_ATTR_NORMAL:
1877                 /* If dont trap flag (continue match) is set, under specific
1878                  * condition traffic be replicated to given qp,
1879                  * without stealing it
1880                  */
1881                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1882                         err = mlx4_ib_add_dont_trap_rule(dev,
1883                                                          flow_attr,
1884                                                          type);
1885                         if (err)
1886                                 goto err_free;
1887                 } else {
1888                         type[0] = MLX4_FS_REGULAR;
1889                 }
1890                 break;
1891
1892         case IB_FLOW_ATTR_ALL_DEFAULT:
1893                 type[0] = MLX4_FS_ALL_DEFAULT;
1894                 break;
1895
1896         case IB_FLOW_ATTR_MC_DEFAULT:
1897                 type[0] = MLX4_FS_MC_DEFAULT;
1898                 break;
1899
1900         case IB_FLOW_ATTR_SNIFFER:
1901                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1902                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1903                 break;
1904
1905         default:
1906                 err = -EINVAL;
1907                 goto err_free;
1908         }
1909
1910         while (i < ARRAY_SIZE(type) && type[i]) {
1911                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1912                                             &mflow->reg_id[i].id);
1913                 if (err)
1914                         goto err_create_flow;
1915                 if (is_bonded) {
1916                         /* Application always sees one port so the mirror rule
1917                          * must be on port #2
1918                          */
1919                         flow_attr->port = 2;
1920                         err = __mlx4_ib_create_flow(qp, flow_attr,
1921                                                     domain, type[j],
1922                                                     &mflow->reg_id[j].mirror);
1923                         flow_attr->port = 1;
1924                         if (err)
1925                                 goto err_create_flow;
1926                         j++;
1927                 }
1928
1929                 i++;
1930         }
1931
1932         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1933                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1934                                                &mflow->reg_id[i].id);
1935                 if (err)
1936                         goto err_create_flow;
1937
1938                 if (is_bonded) {
1939                         flow_attr->port = 2;
1940                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1941                                                        &mflow->reg_id[j].mirror);
1942                         flow_attr->port = 1;
1943                         if (err)
1944                                 goto err_create_flow;
1945                         j++;
1946                 }
1947                 /* function to create mirror rule */
1948                 i++;
1949         }
1950
1951         return &mflow->ibflow;
1952
1953 err_create_flow:
1954         while (i) {
1955                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1956                                              mflow->reg_id[i].id);
1957                 i--;
1958         }
1959
1960         while (j) {
1961                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1962                                              mflow->reg_id[j].mirror);
1963                 j--;
1964         }
1965 err_free:
1966         kfree(mflow);
1967         return ERR_PTR(err);
1968 }
1969
1970 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1971 {
1972         int err, ret = 0;
1973         int i = 0;
1974         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1975         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1976
1977         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1978                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1979                 if (err)
1980                         ret = err;
1981                 if (mflow->reg_id[i].mirror) {
1982                         err = __mlx4_ib_destroy_flow(mdev->dev,
1983                                                      mflow->reg_id[i].mirror);
1984                         if (err)
1985                                 ret = err;
1986                 }
1987                 i++;
1988         }
1989
1990         kfree(mflow);
1991         return ret;
1992 }
1993
1994 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1995 {
1996         int err;
1997         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1998         struct mlx4_dev *dev = mdev->dev;
1999         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
2000         struct mlx4_ib_steering *ib_steering = NULL;
2001         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
2002         struct mlx4_flow_reg_id reg_id;
2003
2004         if (mdev->dev->caps.steering_mode ==
2005             MLX4_STEERING_MODE_DEVICE_MANAGED) {
2006                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
2007                 if (!ib_steering)
2008                         return -ENOMEM;
2009         }
2010
2011         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
2012                                     !!(mqp->flags &
2013                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
2014                                     prot, &reg_id.id);
2015         if (err) {
2016                 pr_err("multicast attach op failed, err %d\n", err);
2017                 goto err_malloc;
2018         }
2019
2020         reg_id.mirror = 0;
2021         if (mlx4_is_bonded(dev)) {
2022                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
2023                                             (mqp->port == 1) ? 2 : 1,
2024                                             !!(mqp->flags &
2025                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
2026                                             prot, &reg_id.mirror);
2027                 if (err)
2028                         goto err_add;
2029         }
2030
2031         err = add_gid_entry(ibqp, gid);
2032         if (err)
2033                 goto err_add;
2034
2035         if (ib_steering) {
2036                 memcpy(ib_steering->gid.raw, gid->raw, 16);
2037                 ib_steering->reg_id = reg_id;
2038                 mutex_lock(&mqp->mutex);
2039                 list_add(&ib_steering->list, &mqp->steering_rules);
2040                 mutex_unlock(&mqp->mutex);
2041         }
2042         return 0;
2043
2044 err_add:
2045         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2046                               prot, reg_id.id);
2047         if (reg_id.mirror)
2048                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2049                                       prot, reg_id.mirror);
2050 err_malloc:
2051         kfree(ib_steering);
2052
2053         return err;
2054 }
2055
2056 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
2057 {
2058         struct mlx4_ib_gid_entry *ge;
2059         struct mlx4_ib_gid_entry *tmp;
2060         struct mlx4_ib_gid_entry *ret = NULL;
2061
2062         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
2063                 if (!memcmp(raw, ge->gid.raw, 16)) {
2064                         ret = ge;
2065                         break;
2066                 }
2067         }
2068
2069         return ret;
2070 }
2071
2072 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2073 {
2074         int err;
2075         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
2076         struct mlx4_dev *dev = mdev->dev;
2077         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
2078         struct net_device *ndev;
2079         struct mlx4_ib_gid_entry *ge;
2080         struct mlx4_flow_reg_id reg_id = {0, 0};
2081         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
2082
2083         if (mdev->dev->caps.steering_mode ==
2084             MLX4_STEERING_MODE_DEVICE_MANAGED) {
2085                 struct mlx4_ib_steering *ib_steering;
2086
2087                 mutex_lock(&mqp->mutex);
2088                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
2089                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
2090                                 list_del(&ib_steering->list);
2091                                 break;
2092                         }
2093                 }
2094                 mutex_unlock(&mqp->mutex);
2095                 if (&ib_steering->list == &mqp->steering_rules) {
2096                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
2097                         return -EINVAL;
2098                 }
2099                 reg_id = ib_steering->reg_id;
2100                 kfree(ib_steering);
2101         }
2102
2103         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2104                                     prot, reg_id.id);
2105         if (err)
2106                 return err;
2107
2108         if (mlx4_is_bonded(dev)) {
2109                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2110                                             prot, reg_id.mirror);
2111                 if (err)
2112                         return err;
2113         }
2114
2115         mutex_lock(&mqp->mutex);
2116         ge = find_gid_entry(mqp, gid->raw);
2117         if (ge) {
2118                 spin_lock_bh(&mdev->iboe.lock);
2119                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
2120                 if (ndev)
2121                         dev_hold(ndev);
2122                 spin_unlock_bh(&mdev->iboe.lock);
2123                 if (ndev)
2124                         dev_put(ndev);
2125                 list_del(&ge->list);
2126                 kfree(ge);
2127         } else
2128                 pr_warn("could not find mgid entry\n");
2129
2130         mutex_unlock(&mqp->mutex);
2131
2132         return 0;
2133 }
2134
2135 static int init_node_data(struct mlx4_ib_dev *dev)
2136 {
2137         struct ib_smp *in_mad  = NULL;
2138         struct ib_smp *out_mad = NULL;
2139         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
2140         int err = -ENOMEM;
2141
2142         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
2143         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
2144         if (!in_mad || !out_mad)
2145                 goto out;
2146
2147         init_query_mad(in_mad);
2148         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
2149         if (mlx4_is_master(dev->dev))
2150                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2151
2152         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2153         if (err)
2154                 goto out;
2155
2156         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2157
2158         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2159
2160         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2161         if (err)
2162                 goto out;
2163
2164         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2165         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2166
2167 out:
2168         kfree(in_mad);
2169         kfree(out_mad);
2170         return err;
2171 }
2172
2173 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2174                         char *buf)
2175 {
2176         struct mlx4_ib_dev *dev =
2177                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2178         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2179 }
2180
2181 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2182                         char *buf)
2183 {
2184         struct mlx4_ib_dev *dev =
2185                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2186         return sprintf(buf, "%x\n", dev->dev->rev_id);
2187 }
2188
2189 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2190                           char *buf)
2191 {
2192         struct mlx4_ib_dev *dev =
2193                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2194         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2195                        dev->dev->board_id);
2196 }
2197
2198 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
2199 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
2200 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
2201
2202 static struct device_attribute *mlx4_class_attributes[] = {
2203         &dev_attr_hw_rev,
2204         &dev_attr_hca_type,
2205         &dev_attr_board_id
2206 };
2207
2208 struct diag_counter {
2209         const char *name;
2210         u32 offset;
2211 };
2212
2213 #define DIAG_COUNTER(_name, _offset)                    \
2214         { .name = #_name, .offset = _offset }
2215
2216 static const struct diag_counter diag_basic[] = {
2217         DIAG_COUNTER(rq_num_lle, 0x00),
2218         DIAG_COUNTER(sq_num_lle, 0x04),
2219         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2220         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2221         DIAG_COUNTER(rq_num_lpe, 0x18),
2222         DIAG_COUNTER(sq_num_lpe, 0x1C),
2223         DIAG_COUNTER(rq_num_wrfe, 0x20),
2224         DIAG_COUNTER(sq_num_wrfe, 0x24),
2225         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2226         DIAG_COUNTER(sq_num_bre, 0x34),
2227         DIAG_COUNTER(sq_num_rire, 0x44),
2228         DIAG_COUNTER(rq_num_rire, 0x48),
2229         DIAG_COUNTER(sq_num_rae, 0x4C),
2230         DIAG_COUNTER(rq_num_rae, 0x50),
2231         DIAG_COUNTER(sq_num_roe, 0x54),
2232         DIAG_COUNTER(sq_num_tree, 0x5C),
2233         DIAG_COUNTER(sq_num_rree, 0x64),
2234         DIAG_COUNTER(rq_num_rnr, 0x68),
2235         DIAG_COUNTER(sq_num_rnr, 0x6C),
2236         DIAG_COUNTER(rq_num_oos, 0x100),
2237         DIAG_COUNTER(sq_num_oos, 0x104),
2238 };
2239
2240 static const struct diag_counter diag_ext[] = {
2241         DIAG_COUNTER(rq_num_dup, 0x130),
2242         DIAG_COUNTER(sq_num_to, 0x134),
2243 };
2244
2245 static const struct diag_counter diag_device_only[] = {
2246         DIAG_COUNTER(num_cqovf, 0x1A0),
2247         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2248 };
2249
2250 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2251                                                     u8 port_num)
2252 {
2253         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2254         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2255
2256         if (!diag[!!port_num].name)
2257                 return NULL;
2258
2259         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2260                                           diag[!!port_num].num_counters,
2261                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2262 }
2263
2264 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2265                                 struct rdma_hw_stats *stats,
2266                                 u8 port, int index)
2267 {
2268         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2269         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2270         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2271                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2272         int ret;
2273         int i;
2274
2275         ret = mlx4_query_diag_counters(dev->dev,
2276                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2277                                        diag[!!port].offset, hw_value,
2278                                        diag[!!port].num_counters, port);
2279
2280         if (ret)
2281                 return ret;
2282
2283         for (i = 0; i < diag[!!port].num_counters; i++)
2284                 stats->value[i] = hw_value[i];
2285
2286         return diag[!!port].num_counters;
2287 }
2288
2289 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2290                                          const char ***name,
2291                                          u32 **offset,
2292                                          u32 *num,
2293                                          bool port)
2294 {
2295         u32 num_counters;
2296
2297         num_counters = ARRAY_SIZE(diag_basic);
2298
2299         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2300                 num_counters += ARRAY_SIZE(diag_ext);
2301
2302         if (!port)
2303                 num_counters += ARRAY_SIZE(diag_device_only);
2304
2305         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2306         if (!*name)
2307                 return -ENOMEM;
2308
2309         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2310         if (!*offset)
2311                 goto err_name;
2312
2313         *num = num_counters;
2314
2315         return 0;
2316
2317 err_name:
2318         kfree(*name);
2319         return -ENOMEM;
2320 }
2321
2322 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2323                                        const char **name,
2324                                        u32 *offset,
2325                                        bool port)
2326 {
2327         int i;
2328         int j;
2329
2330         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2331                 name[i] = diag_basic[i].name;
2332                 offset[i] = diag_basic[i].offset;
2333         }
2334
2335         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2336                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2337                         name[j] = diag_ext[i].name;
2338                         offset[j] = diag_ext[i].offset;
2339                 }
2340         }
2341
2342         if (!port) {
2343                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2344                         name[j] = diag_device_only[i].name;
2345                         offset[j] = diag_device_only[i].offset;
2346                 }
2347         }
2348 }
2349
2350 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2351 {
2352         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2353         int i;
2354         int ret;
2355         bool per_port = !!(ibdev->dev->caps.flags2 &
2356                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2357
2358         if (mlx4_is_slave(ibdev->dev))
2359                 return 0;
2360
2361         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2362                 /* i == 1 means we are building port counters */
2363                 if (i && !per_port)
2364                         continue;
2365
2366                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2367                                                     &diag[i].offset,
2368                                                     &diag[i].num_counters, i);
2369                 if (ret)
2370                         goto err_alloc;
2371
2372                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2373                                            diag[i].offset, i);
2374         }
2375
2376         ibdev->ib_dev.get_hw_stats      = mlx4_ib_get_hw_stats;
2377         ibdev->ib_dev.alloc_hw_stats    = mlx4_ib_alloc_hw_stats;
2378
2379         return 0;
2380
2381 err_alloc:
2382         if (i) {
2383                 kfree(diag[i - 1].name);
2384                 kfree(diag[i - 1].offset);
2385         }
2386
2387         return ret;
2388 }
2389
2390 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2391 {
2392         int i;
2393
2394         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2395                 kfree(ibdev->diag_counters[i].offset);
2396                 kfree(ibdev->diag_counters[i].name);
2397         }
2398 }
2399
2400 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2401 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2402                                struct net_device *dev,
2403                                int port)
2404 {
2405         u64 new_smac = 0;
2406         u64 release_mac = MLX4_IB_INVALID_MAC;
2407         struct mlx4_ib_qp *qp;
2408
2409         read_lock(&dev_base_lock);
2410         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2411         read_unlock(&dev_base_lock);
2412
2413         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2414
2415         /* no need for update QP1 and mac registration in non-SRIOV */
2416         if (!mlx4_is_mfunc(ibdev->dev))
2417                 return;
2418
2419         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2420         qp = ibdev->qp1_proxy[port - 1];
2421         if (qp) {
2422                 int new_smac_index;
2423                 u64 old_smac;
2424                 struct mlx4_update_qp_params update_params;
2425
2426                 mutex_lock(&qp->mutex);
2427                 old_smac = qp->pri.smac;
2428                 if (new_smac == old_smac)
2429                         goto unlock;
2430
2431                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2432
2433                 if (new_smac_index < 0)
2434                         goto unlock;
2435
2436                 update_params.smac_index = new_smac_index;
2437                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2438                                    &update_params)) {
2439                         release_mac = new_smac;
2440                         goto unlock;
2441                 }
2442                 /* if old port was zero, no mac was yet registered for this QP */
2443                 if (qp->pri.smac_port)
2444                         release_mac = old_smac;
2445                 qp->pri.smac = new_smac;
2446                 qp->pri.smac_port = port;
2447                 qp->pri.smac_index = new_smac_index;
2448         }
2449
2450 unlock:
2451         if (release_mac != MLX4_IB_INVALID_MAC)
2452                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2453         if (qp)
2454                 mutex_unlock(&qp->mutex);
2455         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2456 }
2457
2458 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2459                                  struct net_device *dev,
2460                                  unsigned long event)
2461
2462 {
2463         struct mlx4_ib_iboe *iboe;
2464         int update_qps_port = -1;
2465         int port;
2466
2467         ASSERT_RTNL();
2468
2469         iboe = &ibdev->iboe;
2470
2471         spin_lock_bh(&iboe->lock);
2472         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2473
2474                 iboe->netdevs[port - 1] =
2475                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2476
2477                 if (dev == iboe->netdevs[port - 1] &&
2478                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2479                      event == NETDEV_UP || event == NETDEV_CHANGE))
2480                         update_qps_port = port;
2481
2482         }
2483         spin_unlock_bh(&iboe->lock);
2484
2485         if (update_qps_port > 0)
2486                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2487 }
2488
2489 static int mlx4_ib_netdev_event(struct notifier_block *this,
2490                                 unsigned long event, void *ptr)
2491 {
2492         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2493         struct mlx4_ib_dev *ibdev;
2494
2495         if (!net_eq(dev_net(dev), &init_net))
2496                 return NOTIFY_DONE;
2497
2498         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2499         mlx4_ib_scan_netdevs(ibdev, dev, event);
2500
2501         return NOTIFY_DONE;
2502 }
2503
2504 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2505 {
2506         int port;
2507         int slave;
2508         int i;
2509
2510         if (mlx4_is_master(ibdev->dev)) {
2511                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2512                      ++slave) {
2513                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2514                                 for (i = 0;
2515                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2516                                      ++i) {
2517                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2518                                         /* master has the identity virt2phys pkey mapping */
2519                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2520                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2521                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2522                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2523                                 }
2524                         }
2525                 }
2526                 /* initialize pkey cache */
2527                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2528                         for (i = 0;
2529                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2530                              ++i)
2531                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2532                                         (i) ? 0 : 0xFFFF;
2533                 }
2534         }
2535 }
2536
2537 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2538 {
2539         int i, j, eq = 0, total_eqs = 0;
2540
2541         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2542                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2543         if (!ibdev->eq_table)
2544                 return;
2545
2546         for (i = 1; i <= dev->caps.num_ports; i++) {
2547                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2548                      j++, total_eqs++) {
2549                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2550                                 continue;
2551                         ibdev->eq_table[eq] = total_eqs;
2552                         if (!mlx4_assign_eq(dev, i,
2553                                             &ibdev->eq_table[eq]))
2554                                 eq++;
2555                         else
2556                                 ibdev->eq_table[eq] = -1;
2557                 }
2558         }
2559
2560         for (i = eq; i < dev->caps.num_comp_vectors;
2561              ibdev->eq_table[i++] = -1)
2562                 ;
2563
2564         /* Advertise the new number of EQs to clients */
2565         ibdev->ib_dev.num_comp_vectors = eq;
2566 }
2567
2568 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2569 {
2570         int i;
2571         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2572
2573         /* no eqs were allocated */
2574         if (!ibdev->eq_table)
2575                 return;
2576
2577         /* Reset the advertised EQ number */
2578         ibdev->ib_dev.num_comp_vectors = 0;
2579
2580         for (i = 0; i < total_eqs; i++)
2581                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2582
2583         kfree(ibdev->eq_table);
2584         ibdev->eq_table = NULL;
2585 }
2586
2587 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2588                                struct ib_port_immutable *immutable)
2589 {
2590         struct ib_port_attr attr;
2591         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2592         int err;
2593
2594         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2595                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2596                 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2597         } else {
2598                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2599                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2600                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2601                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2602                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2603                 immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
2604                 if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
2605                     RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
2606                         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2607         }
2608
2609         err = ib_query_port(ibdev, port_num, &attr);
2610         if (err)
2611                 return err;
2612
2613         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2614         immutable->gid_tbl_len = attr.gid_tbl_len;
2615
2616         return 0;
2617 }
2618
2619 static void get_fw_ver_str(struct ib_device *device, char *str)
2620 {
2621         struct mlx4_ib_dev *dev =
2622                 container_of(device, struct mlx4_ib_dev, ib_dev);
2623         snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d",
2624                  (int) (dev->dev->caps.fw_ver >> 32),
2625                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2626                  (int) dev->dev->caps.fw_ver & 0xffff);
2627 }
2628
2629 static void *mlx4_ib_add(struct mlx4_dev *dev)
2630 {
2631         struct mlx4_ib_dev *ibdev;
2632         int num_ports = 0;
2633         int i, j;
2634         int err;
2635         struct mlx4_ib_iboe *iboe;
2636         int ib_num_ports = 0;
2637         int num_req_counters;
2638         int allocated;
2639         u32 counter_index;
2640         struct counter_index *new_counter_index = NULL;
2641
2642         pr_info_once("%s", mlx4_ib_version);
2643
2644         num_ports = 0;
2645         mlx4_foreach_ib_transport_port(i, dev)
2646                 num_ports++;
2647
2648         /* No point in registering a device with no ports... */
2649         if (num_ports == 0)
2650                 return NULL;
2651
2652         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2653         if (!ibdev) {
2654                 dev_err(&dev->persist->pdev->dev,
2655                         "Device struct alloc failed\n");
2656                 return NULL;
2657         }
2658
2659         iboe = &ibdev->iboe;
2660
2661         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2662                 goto err_dealloc;
2663
2664         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2665                 goto err_pd;
2666
2667         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2668                                  PAGE_SIZE);
2669         if (!ibdev->uar_map)
2670                 goto err_uar;
2671         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2672
2673         ibdev->dev = dev;
2674         ibdev->bond_next_port   = 0;
2675
2676         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2677         ibdev->ib_dev.owner             = THIS_MODULE;
2678         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2679         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2680         ibdev->num_ports                = num_ports;
2681         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2682                                                 1 : ibdev->num_ports;
2683         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2684         ibdev->ib_dev.dev.parent        = &dev->persist->pdev->dev;
2685         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2686         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2687         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2688
2689         if (dev->caps.userspace_caps)
2690                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2691         else
2692                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2693
2694         ibdev->ib_dev.uverbs_cmd_mask   =
2695                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2696                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2697                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2698                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2699                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2700                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2701                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2702                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2703                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2704                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2705                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2706                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2707                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2708                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2709                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2710                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2711                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2712                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2713                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2714                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2715                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2716                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2717                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2718                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2719
2720         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2721         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2722         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2723         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2724         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2725         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2726         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2727         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2728         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2729         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2730         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2731         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2732         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2733         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2734         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2735         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2736         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2737         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2738         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2739         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2740         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2741         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2742         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2743         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2744         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2745         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2746         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2747         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2748         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2749         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2750         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2751         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2752         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2753         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2754         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2755         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2756         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2757         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2758         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2759         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2760         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2761         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2762         ibdev->ib_dev.get_dev_fw_str    = get_fw_ver_str;
2763         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2764
2765         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2766                 (1ull << IB_USER_VERBS_EX_CMD_MODIFY_CQ);
2767
2768         if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
2769             ((mlx4_ib_port_link_layer(&ibdev->ib_dev, 1) ==
2770             IB_LINK_LAYER_ETHERNET) ||
2771             (mlx4_ib_port_link_layer(&ibdev->ib_dev, 2) ==
2772             IB_LINK_LAYER_ETHERNET))) {
2773                 ibdev->ib_dev.create_wq         = mlx4_ib_create_wq;
2774                 ibdev->ib_dev.modify_wq         = mlx4_ib_modify_wq;
2775                 ibdev->ib_dev.destroy_wq        = mlx4_ib_destroy_wq;
2776                 ibdev->ib_dev.create_rwq_ind_table  =
2777                         mlx4_ib_create_rwq_ind_table;
2778                 ibdev->ib_dev.destroy_rwq_ind_table =
2779                         mlx4_ib_destroy_rwq_ind_table;
2780                 ibdev->ib_dev.uverbs_ex_cmd_mask |=
2781                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ)          |
2782                         (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ)          |
2783                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ)         |
2784                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
2785                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
2786         }
2787
2788         if (!mlx4_is_slave(ibdev->dev)) {
2789                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2790                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2791                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2792                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2793         }
2794
2795         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2796             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2797                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2798                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2799
2800                 ibdev->ib_dev.uverbs_cmd_mask |=
2801                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2802                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2803         }
2804
2805         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2806                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2807                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2808                 ibdev->ib_dev.uverbs_cmd_mask |=
2809                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2810                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2811         }
2812
2813         if (check_flow_steering_support(dev)) {
2814                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2815                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2816                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2817
2818                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2819                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2820                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2821         }
2822
2823         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2824                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2825                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2826                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2827
2828         mlx4_ib_alloc_eqs(dev, ibdev);
2829
2830         spin_lock_init(&iboe->lock);
2831
2832         if (init_node_data(ibdev))
2833                 goto err_map;
2834         mlx4_init_sl2vl_tbl(ibdev);
2835
2836         for (i = 0; i < ibdev->num_ports; ++i) {
2837                 mutex_init(&ibdev->counters_table[i].mutex);
2838                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2839         }
2840
2841         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2842         for (i = 0; i < num_req_counters; ++i) {
2843                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2844                 allocated = 0;
2845                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2846                                                 IB_LINK_LAYER_ETHERNET) {
2847                         err = mlx4_counter_alloc(ibdev->dev, &counter_index,
2848                                                  MLX4_RES_USAGE_DRIVER);
2849                         /* if failed to allocate a new counter, use default */
2850                         if (err)
2851                                 counter_index =
2852                                         mlx4_get_default_counter_index(dev,
2853                                                                        i + 1);
2854                         else
2855                                 allocated = 1;
2856                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2857                         counter_index = mlx4_get_default_counter_index(dev,
2858                                                                        i + 1);
2859                 }
2860                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2861                                             GFP_KERNEL);
2862                 if (!new_counter_index) {
2863                         if (allocated)
2864                                 mlx4_counter_free(ibdev->dev, counter_index);
2865                         goto err_counter;
2866                 }
2867                 new_counter_index->index = counter_index;
2868                 new_counter_index->allocated = allocated;
2869                 list_add_tail(&new_counter_index->list,
2870                               &ibdev->counters_table[i].counters_list);
2871                 ibdev->counters_table[i].default_counter = counter_index;
2872                 pr_info("counter index %d for port %d allocated %d\n",
2873                         counter_index, i + 1, allocated);
2874         }
2875         if (mlx4_is_bonded(dev))
2876                 for (i = 1; i < ibdev->num_ports ; ++i) {
2877                         new_counter_index =
2878                                         kmalloc(sizeof(struct counter_index),
2879                                                 GFP_KERNEL);
2880                         if (!new_counter_index)
2881                                 goto err_counter;
2882                         new_counter_index->index = counter_index;
2883                         new_counter_index->allocated = 0;
2884                         list_add_tail(&new_counter_index->list,
2885                                       &ibdev->counters_table[i].counters_list);
2886                         ibdev->counters_table[i].default_counter =
2887                                                                 counter_index;
2888                 }
2889
2890         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2891                 ib_num_ports++;
2892
2893         spin_lock_init(&ibdev->sm_lock);
2894         mutex_init(&ibdev->cap_mask_mutex);
2895         INIT_LIST_HEAD(&ibdev->qp_list);
2896         spin_lock_init(&ibdev->reset_flow_resource_lock);
2897
2898         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2899             ib_num_ports) {
2900                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2901                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2902                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2903                                             &ibdev->steer_qpn_base, 0,
2904                                             MLX4_RES_USAGE_DRIVER);
2905                 if (err)
2906                         goto err_counter;
2907
2908                 ibdev->ib_uc_qpns_bitmap =
2909                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2910                                 sizeof(long),
2911                                 GFP_KERNEL);
2912                 if (!ibdev->ib_uc_qpns_bitmap)
2913                         goto err_steer_qp_release;
2914
2915                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2916                         bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2917                                     ibdev->steer_qpn_count);
2918                         err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2919                                         dev, ibdev->steer_qpn_base,
2920                                         ibdev->steer_qpn_base +
2921                                         ibdev->steer_qpn_count - 1);
2922                         if (err)
2923                                 goto err_steer_free_bitmap;
2924                 } else {
2925                         bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2926                                     ibdev->steer_qpn_count);
2927                 }
2928         }
2929
2930         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2931                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2932
2933         if (mlx4_ib_alloc_diag_counters(ibdev))
2934                 goto err_steer_free_bitmap;
2935
2936         if (ib_register_device(&ibdev->ib_dev, NULL))
2937                 goto err_diag_counters;
2938
2939         if (mlx4_ib_mad_init(ibdev))
2940                 goto err_reg;
2941
2942         if (mlx4_ib_init_sriov(ibdev))
2943                 goto err_mad;
2944
2945         if (!iboe->nb.notifier_call) {
2946                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
2947                 err = register_netdevice_notifier(&iboe->nb);
2948                 if (err) {
2949                         iboe->nb.notifier_call = NULL;
2950                         goto err_notif;
2951                 }
2952         }
2953         if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2954                 err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2955                 if (err)
2956                         goto err_notif;
2957         }
2958
2959         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2960                 if (device_create_file(&ibdev->ib_dev.dev,
2961                                        mlx4_class_attributes[j]))
2962                         goto err_notif;
2963         }
2964
2965         ibdev->ib_active = true;
2966         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2967                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2968                                          &ibdev->ib_dev);
2969
2970         if (mlx4_is_mfunc(ibdev->dev))
2971                 init_pkeys(ibdev);
2972
2973         /* create paravirt contexts for any VFs which are active */
2974         if (mlx4_is_master(ibdev->dev)) {
2975                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2976                         if (j == mlx4_master_func_num(ibdev->dev))
2977                                 continue;
2978                         if (mlx4_is_slave_active(ibdev->dev, j))
2979                                 do_slave_init(ibdev, j, 1);
2980                 }
2981         }
2982         return ibdev;
2983
2984 err_notif:
2985         if (ibdev->iboe.nb.notifier_call) {
2986                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2987                         pr_warn("failure unregistering notifier\n");
2988                 ibdev->iboe.nb.notifier_call = NULL;
2989         }
2990         flush_workqueue(wq);
2991
2992         mlx4_ib_close_sriov(ibdev);
2993
2994 err_mad:
2995         mlx4_ib_mad_cleanup(ibdev);
2996
2997 err_reg:
2998         ib_unregister_device(&ibdev->ib_dev);
2999
3000 err_diag_counters:
3001         mlx4_ib_diag_cleanup(ibdev);
3002
3003 err_steer_free_bitmap:
3004         kfree(ibdev->ib_uc_qpns_bitmap);
3005
3006 err_steer_qp_release:
3007         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3008                               ibdev->steer_qpn_count);
3009 err_counter:
3010         for (i = 0; i < ibdev->num_ports; ++i)
3011                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
3012
3013 err_map:
3014         mlx4_ib_free_eqs(dev, ibdev);
3015         iounmap(ibdev->uar_map);
3016
3017 err_uar:
3018         mlx4_uar_free(dev, &ibdev->priv_uar);
3019
3020 err_pd:
3021         mlx4_pd_free(dev, ibdev->priv_pdn);
3022
3023 err_dealloc:
3024         ib_dealloc_device(&ibdev->ib_dev);
3025
3026         return NULL;
3027 }
3028
3029 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
3030 {
3031         int offset;
3032
3033         WARN_ON(!dev->ib_uc_qpns_bitmap);
3034
3035         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
3036                                          dev->steer_qpn_count,
3037                                          get_count_order(count));
3038         if (offset < 0)
3039                 return offset;
3040
3041         *qpn = dev->steer_qpn_base + offset;
3042         return 0;
3043 }
3044
3045 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
3046 {
3047         if (!qpn ||
3048             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
3049                 return;
3050
3051         BUG_ON(qpn < dev->steer_qpn_base);
3052
3053         bitmap_release_region(dev->ib_uc_qpns_bitmap,
3054                               qpn - dev->steer_qpn_base,
3055                               get_count_order(count));
3056 }
3057
3058 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
3059                          int is_attach)
3060 {
3061         int err;
3062         size_t flow_size;
3063         struct ib_flow_attr *flow = NULL;
3064         struct ib_flow_spec_ib *ib_spec;
3065
3066         if (is_attach) {
3067                 flow_size = sizeof(struct ib_flow_attr) +
3068                             sizeof(struct ib_flow_spec_ib);
3069                 flow = kzalloc(flow_size, GFP_KERNEL);
3070                 if (!flow)
3071                         return -ENOMEM;
3072                 flow->port = mqp->port;
3073                 flow->num_of_specs = 1;
3074                 flow->size = flow_size;
3075                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
3076                 ib_spec->type = IB_FLOW_SPEC_IB;
3077                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
3078                 /* Add an empty rule for IB L2 */
3079                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
3080
3081                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
3082                                             IB_FLOW_DOMAIN_NIC,
3083                                             MLX4_FS_REGULAR,
3084                                             &mqp->reg_id);
3085         } else {
3086                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
3087         }
3088         kfree(flow);
3089         return err;
3090 }
3091
3092 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
3093 {
3094         struct mlx4_ib_dev *ibdev = ibdev_ptr;
3095         int p;
3096         int i;
3097
3098         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
3099                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
3100         ibdev->ib_active = false;
3101         flush_workqueue(wq);
3102
3103         mlx4_ib_close_sriov(ibdev);
3104         mlx4_ib_mad_cleanup(ibdev);
3105         ib_unregister_device(&ibdev->ib_dev);
3106         mlx4_ib_diag_cleanup(ibdev);
3107         if (ibdev->iboe.nb.notifier_call) {
3108                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
3109                         pr_warn("failure unregistering notifier\n");
3110                 ibdev->iboe.nb.notifier_call = NULL;
3111         }
3112
3113         mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3114                               ibdev->steer_qpn_count);
3115         kfree(ibdev->ib_uc_qpns_bitmap);
3116
3117         iounmap(ibdev->uar_map);
3118         for (p = 0; p < ibdev->num_ports; ++p)
3119                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3120
3121         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3122                 mlx4_CLOSE_PORT(dev, p);
3123
3124         mlx4_ib_free_eqs(dev, ibdev);
3125
3126         mlx4_uar_free(dev, &ibdev->priv_uar);
3127         mlx4_pd_free(dev, ibdev->priv_pdn);
3128         ib_dealloc_device(&ibdev->ib_dev);
3129 }
3130
3131 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3132 {
3133         struct mlx4_ib_demux_work **dm = NULL;
3134         struct mlx4_dev *dev = ibdev->dev;
3135         int i;
3136         unsigned long flags;
3137         struct mlx4_active_ports actv_ports;
3138         unsigned int ports;
3139         unsigned int first_port;
3140
3141         if (!mlx4_is_master(dev))
3142                 return;
3143
3144         actv_ports = mlx4_get_active_ports(dev, slave);
3145         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3146         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3147
3148         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3149         if (!dm)
3150                 return;
3151
3152         for (i = 0; i < ports; i++) {
3153                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3154                 if (!dm[i]) {
3155                         while (--i >= 0)
3156                                 kfree(dm[i]);
3157                         goto out;
3158                 }
3159                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3160                 dm[i]->port = first_port + i + 1;
3161                 dm[i]->slave = slave;
3162                 dm[i]->do_init = do_init;
3163                 dm[i]->dev = ibdev;
3164         }
3165         /* initialize or tear down tunnel QPs for the slave */
3166         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3167         if (!ibdev->sriov.is_going_down) {
3168                 for (i = 0; i < ports; i++)
3169                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3170                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3171         } else {
3172                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3173                 for (i = 0; i < ports; i++)
3174                         kfree(dm[i]);
3175         }
3176 out:
3177         kfree(dm);
3178         return;
3179 }
3180
3181 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3182 {
3183         struct mlx4_ib_qp *mqp;
3184         unsigned long flags_qp;
3185         unsigned long flags_cq;
3186         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3187         struct list_head    cq_notify_list;
3188         struct mlx4_cq *mcq;
3189         unsigned long flags;
3190
3191         pr_warn("mlx4_ib_handle_catas_error was started\n");
3192         INIT_LIST_HEAD(&cq_notify_list);
3193
3194         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3195         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3196
3197         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3198                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3199                 if (mqp->sq.tail != mqp->sq.head) {
3200                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3201                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3202                         if (send_mcq->mcq.comp &&
3203                             mqp->ibqp.send_cq->comp_handler) {
3204                                 if (!send_mcq->mcq.reset_notify_added) {
3205                                         send_mcq->mcq.reset_notify_added = 1;
3206                                         list_add_tail(&send_mcq->mcq.reset_notify,
3207                                                       &cq_notify_list);
3208                                 }
3209                         }
3210                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3211                 }
3212                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3213                 /* Now, handle the QP's receive queue */
3214                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3215                 /* no handling is needed for SRQ */
3216                 if (!mqp->ibqp.srq) {
3217                         if (mqp->rq.tail != mqp->rq.head) {
3218                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3219                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3220                                 if (recv_mcq->mcq.comp &&
3221                                     mqp->ibqp.recv_cq->comp_handler) {
3222                                         if (!recv_mcq->mcq.reset_notify_added) {
3223                                                 recv_mcq->mcq.reset_notify_added = 1;
3224                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3225                                                               &cq_notify_list);
3226                                         }
3227                                 }
3228                                 spin_unlock_irqrestore(&recv_mcq->lock,
3229                                                        flags_cq);
3230                         }
3231                 }
3232                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3233         }
3234
3235         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3236                 mcq->comp(mcq);
3237         }
3238         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3239         pr_warn("mlx4_ib_handle_catas_error ended\n");
3240 }
3241
3242 static void handle_bonded_port_state_event(struct work_struct *work)
3243 {
3244         struct ib_event_work *ew =
3245                 container_of(work, struct ib_event_work, work);
3246         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3247         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3248         int i;
3249         struct ib_event ibev;
3250
3251         kfree(ew);
3252         spin_lock_bh(&ibdev->iboe.lock);
3253         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3254                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3255                 enum ib_port_state curr_port_state;
3256
3257                 if (!curr_netdev)
3258                         continue;
3259
3260                 curr_port_state =
3261                         (netif_running(curr_netdev) &&
3262                          netif_carrier_ok(curr_netdev)) ?
3263                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3264
3265                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3266                         curr_port_state : IB_PORT_ACTIVE;
3267         }
3268         spin_unlock_bh(&ibdev->iboe.lock);
3269
3270         ibev.device = &ibdev->ib_dev;
3271         ibev.element.port_num = 1;
3272         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3273                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3274
3275         ib_dispatch_event(&ibev);
3276 }
3277
3278 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3279 {
3280         u64 sl2vl;
3281         int err;
3282
3283         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3284         if (err) {
3285                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3286                        port, err);
3287                 sl2vl = 0;
3288         }
3289         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3290 }
3291
3292 static void ib_sl2vl_update_work(struct work_struct *work)
3293 {
3294         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3295         struct mlx4_ib_dev *mdev = ew->ib_dev;
3296         int port = ew->port;
3297
3298         mlx4_ib_sl2vl_update(mdev, port);
3299
3300         kfree(ew);
3301 }
3302
3303 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3304                                      int port)
3305 {
3306         struct ib_event_work *ew;
3307
3308         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3309         if (ew) {
3310                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3311                 ew->port = port;
3312                 ew->ib_dev = ibdev;
3313                 queue_work(wq, &ew->work);
3314         }
3315 }
3316
3317 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3318                           enum mlx4_dev_event event, unsigned long param)
3319 {
3320         struct ib_event ibev;
3321         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3322         struct mlx4_eqe *eqe = NULL;
3323         struct ib_event_work *ew;
3324         int p = 0;
3325
3326         if (mlx4_is_bonded(dev) &&
3327             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3328             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3329                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3330                 if (!ew)
3331                         return;
3332                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3333                 ew->ib_dev = ibdev;
3334                 queue_work(wq, &ew->work);
3335                 return;
3336         }
3337
3338         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3339                 eqe = (struct mlx4_eqe *)param;
3340         else
3341                 p = (int) param;
3342
3343         switch (event) {
3344         case MLX4_DEV_EVENT_PORT_UP:
3345                 if (p > ibdev->num_ports)
3346                         return;
3347                 if (!mlx4_is_slave(dev) &&
3348                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3349                         IB_LINK_LAYER_INFINIBAND) {
3350                         if (mlx4_is_master(dev))
3351                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3352                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3353                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3354                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3355                 }
3356                 ibev.event = IB_EVENT_PORT_ACTIVE;
3357                 break;
3358
3359         case MLX4_DEV_EVENT_PORT_DOWN:
3360                 if (p > ibdev->num_ports)
3361                         return;
3362                 ibev.event = IB_EVENT_PORT_ERR;
3363                 break;
3364
3365         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3366                 ibdev->ib_active = false;
3367                 ibev.event = IB_EVENT_DEVICE_FATAL;
3368                 mlx4_ib_handle_catas_error(ibdev);
3369                 break;
3370
3371         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3372                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3373                 if (!ew)
3374                         break;
3375
3376                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3377                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3378                 ew->ib_dev = ibdev;
3379                 /* need to queue only for port owner, which uses GEN_EQE */
3380                 if (mlx4_is_master(dev))
3381                         queue_work(wq, &ew->work);
3382                 else
3383                         handle_port_mgmt_change_event(&ew->work);
3384                 return;
3385
3386         case MLX4_DEV_EVENT_SLAVE_INIT:
3387                 /* here, p is the slave id */
3388                 do_slave_init(ibdev, p, 1);
3389                 if (mlx4_is_master(dev)) {
3390                         int i;
3391
3392                         for (i = 1; i <= ibdev->num_ports; i++) {
3393                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3394                                         == IB_LINK_LAYER_INFINIBAND)
3395                                         mlx4_ib_slave_alias_guid_event(ibdev,
3396                                                                        p, i,
3397                                                                        1);
3398                         }
3399                 }
3400                 return;
3401
3402         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3403                 if (mlx4_is_master(dev)) {
3404                         int i;
3405
3406                         for (i = 1; i <= ibdev->num_ports; i++) {
3407                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3408                                         == IB_LINK_LAYER_INFINIBAND)
3409                                         mlx4_ib_slave_alias_guid_event(ibdev,
3410                                                                        p, i,
3411                                                                        0);
3412                         }
3413                 }
3414                 /* here, p is the slave id */
3415                 do_slave_init(ibdev, p, 0);
3416                 return;
3417
3418         default:
3419                 return;
3420         }
3421
3422         ibev.device           = ibdev_ptr;
3423         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3424
3425         ib_dispatch_event(&ibev);
3426 }
3427
3428 static struct mlx4_interface mlx4_ib_interface = {
3429         .add            = mlx4_ib_add,
3430         .remove         = mlx4_ib_remove,
3431         .event          = mlx4_ib_event,
3432         .protocol       = MLX4_PROT_IB_IPV6,
3433         .flags          = MLX4_INTFF_BONDING
3434 };
3435
3436 static int __init mlx4_ib_init(void)
3437 {
3438         int err;
3439
3440         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3441         if (!wq)
3442                 return -ENOMEM;
3443
3444         err = mlx4_ib_mcg_init();
3445         if (err)
3446                 goto clean_wq;
3447
3448         err = mlx4_register_interface(&mlx4_ib_interface);
3449         if (err)
3450                 goto clean_mcg;
3451
3452         return 0;
3453
3454 clean_mcg:
3455         mlx4_ib_mcg_destroy();
3456
3457 clean_wq:
3458         destroy_workqueue(wq);
3459         return err;
3460 }
3461
3462 static void __exit mlx4_ib_cleanup(void)
3463 {
3464         mlx4_unregister_interface(&mlx4_ib_interface);
3465         mlx4_ib_mcg_destroy();
3466         destroy_workqueue(wq);
3467 }
3468
3469 module_init(mlx4_ib_init);
3470 module_exit(mlx4_ib_cleanup);