sys/dev/mlx4/mlx4_ib/mlx4_ib_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 #define LINUXKPI_PARAM_PREFIX mlx4_
  35
  36 #include <linux/module.h>
  37 #include <linux/slab.h>
  38 #include <linux/errno.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/if_vlan.h>
  42 #include <linux/fs.h>
  43 #include <linux/rcupdate.h>
  44 #include <linux/notifier.h>
  45 #include <linux/delay.h>
  46
  47 #include <net/ipv6.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 <dev/mlx4/driver.h>
  55 #include <dev/mlx4/cmd.h>
  56 #include <dev/mlx4/qp.h>
  57 #include <linux/sched.h>
  58 #include <linux/page.h>
  59 #include <linux/printk.h>
  60 #include "mlx4_ib.h"
  61 #include <rdma/mlx4-abi.h>
  62 #include "wc.h"
  63
  64 #define DRV_NAME        MLX4_IB_DRV_NAME
  65 #ifndef DRV_VERSION
  66 #define DRV_VERSION     "3.6.0"
  67 #endif
  68 #define DRV_RELDATE     "December 2020"
  69
  70 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  71 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  72 #define MLX4_IB_CARD_REV_A0   0xA0
  73
  74 MODULE_AUTHOR("Roland Dreier");
  75 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  76 MODULE_LICENSE("Dual BSD/GPL");
  77
  78 int mlx4_ib_sm_guid_assign = 0;
  79 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  80 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  81
  82 static const char mlx4_ib_version[] =
  83         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  84         DRV_VERSION " (" DRV_RELDATE ")\n";
  85
  86 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  87
  88 static struct workqueue_struct *wq;
  89
  90 static void init_query_mad(struct ib_smp *mad)
  91 {
  92         mad->base_version  = 1;
  93         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  94         mad->class_version = 1;
  95         mad->method        = IB_MGMT_METHOD_GET;
  96 }
  97
  98 static int check_flow_steering_support(struct mlx4_dev *dev)
  99 {
 100         int eth_num_ports = 0;
 101         int ib_num_ports = 0;
 102
 103         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
 104
 105         if (dmfs) {
 106                 int i;
 107                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 108                         eth_num_ports++;
 109                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 110                         ib_num_ports++;
 111                 dmfs &= (!ib_num_ports ||
 112                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 113                         (!eth_num_ports ||
 114                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 115                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 116                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 117                         dmfs = 0;
 118                 }
 119         }
 120         return dmfs;
 121 }
 122
 123 static int num_ib_ports(struct mlx4_dev *dev)
 124 {
 125         int ib_ports = 0;
 126         int i;
 127
 128         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 129                 ib_ports++;
 130
 131         return ib_ports;
 132 }
 133
 134 static struct ifnet *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 135 {
 136         struct mlx4_ib_dev *ibdev = to_mdev(device);
 137         struct ifnet *dev;
 138
 139         rcu_read_lock();
 140         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 141
 142 #if 0
 143         if (dev) {
 144                 if (mlx4_is_bonded(ibdev->dev)) {
 145                         struct ifnet *upper = NULL;
 146
 147                         upper = netdev_master_upper_dev_get_rcu(dev);
 148                         if (upper) {
 149                                 struct ifnet *active;
 150
 151                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 152                                 if (active)
 153                                         dev = active;
 154                         }
 155                 }
 156         }
 157 #endif
 158         if (dev)
 159                 if_ref(dev);
 160
 161         rcu_read_unlock();
 162         return dev;
 163 }
 164
 165 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 166                                   struct mlx4_ib_dev *ibdev,
 167                                   u8 port_num)
 168 {
 169         struct mlx4_cmd_mailbox *mailbox;
 170         int err;
 171         struct mlx4_dev *dev = ibdev->dev;
 172         int i;
 173         union ib_gid *gid_tbl;
 174
 175         mailbox = mlx4_alloc_cmd_mailbox(dev);
 176         if (IS_ERR(mailbox))
 177                 return -ENOMEM;
 178
 179         gid_tbl = mailbox->buf;
 180
 181         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 182                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 183
 184         err = mlx4_cmd(dev, mailbox->dma,
 185                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 186                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 187                        MLX4_CMD_WRAPPED);
 188         if (mlx4_is_bonded(dev))
 189                 err += mlx4_cmd(dev, mailbox->dma,
 190                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 191                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 192                                 MLX4_CMD_WRAPPED);
 193
 194         mlx4_free_cmd_mailbox(dev, mailbox);
 195         return err;
 196 }
 197
 198 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 199                                      struct mlx4_ib_dev *ibdev,
 200                                      u8 port_num)
 201 {
 202         struct mlx4_cmd_mailbox *mailbox;
 203         int err;
 204         struct mlx4_dev *dev = ibdev->dev;
 205         int i;
 206         struct {
 207                 union ib_gid    gid;
 208                 __be32          rsrvd1[2];
 209                 __be16          rsrvd2;
 210                 u8              type;
 211                 u8              version;
 212                 __be32          rsrvd3;
 213         } *gid_tbl;
 214
 215         mailbox = mlx4_alloc_cmd_mailbox(dev);
 216         if (IS_ERR(mailbox))
 217                 return -ENOMEM;
 218
 219         gid_tbl = mailbox->buf;
 220         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 221                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 222                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 223                         gid_tbl[i].version = 2;
 224                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 225                                 gid_tbl[i].type = 1;
 226                         else
 227                                 memset(&gid_tbl[i].gid, 0, 12);
 228                 }
 229         }
 230
 231         err = mlx4_cmd(dev, mailbox->dma,
 232                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 233                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 234                        MLX4_CMD_WRAPPED);
 235         if (mlx4_is_bonded(dev))
 236                 err += mlx4_cmd(dev, mailbox->dma,
 237                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 238                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 239                                 MLX4_CMD_WRAPPED);
 240
 241         mlx4_free_cmd_mailbox(dev, mailbox);
 242         return err;
 243 }
 244
 245 static int mlx4_ib_update_gids(struct gid_entry *gids,
 246                                struct mlx4_ib_dev *ibdev,
 247                                u8 port_num)
 248 {
 249         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 250                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 251
 252         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 253 }
 254
 255 static int mlx4_ib_add_gid(struct ib_device *device,
 256                            u8 port_num,
 257                            unsigned int index,
 258                            const union ib_gid *gid,
 259                            const struct ib_gid_attr *attr,
 260                            void **context)
 261 {
 262         struct mlx4_ib_dev *ibdev = to_mdev(device);
 263         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 264         struct mlx4_port_gid_table   *port_gid_table;
 265         int free = -1, found = -1;
 266         int ret = 0;
 267         int hw_update = 0;
 268         int i;
 269         struct gid_entry *gids = NULL;
 270
 271         if (!rdma_cap_roce_gid_table(device, port_num))
 272                 return -EINVAL;
 273
 274         if (port_num > MLX4_MAX_PORTS)
 275                 return -EINVAL;
 276
 277         if (!context)
 278                 return -EINVAL;
 279
 280         port_gid_table = &iboe->gids[port_num - 1];
 281         spin_lock_bh(&iboe->lock);
 282         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 283                 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
 284                     (port_gid_table->gids[i].gid_type == attr->gid_type))  {
 285                         found = i;
 286                         break;
 287                 }
 288                 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
 289                         free = i; /* HW has space */
 290         }
 291
 292         if (found < 0) {
 293                 if (free < 0) {
 294                         ret = -ENOSPC;
 295                 } else {
 296                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 297                         if (!port_gid_table->gids[free].ctx) {
 298                                 ret = -ENOMEM;
 299                         } else {
 300                                 *context = port_gid_table->gids[free].ctx;
 301                                 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
 302                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 303                                 port_gid_table->gids[free].ctx->real_index = free;
 304                                 port_gid_table->gids[free].ctx->refcount = 1;
 305                                 hw_update = 1;
 306                         }
 307                 }
 308         } else {
 309                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 310                 *context = ctx;
 311                 ctx->refcount++;
 312         }
 313         if (!ret && hw_update) {
 314                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 315                 if (!gids) {
 316                         ret = -ENOMEM;
 317                 } else {
 318                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 319                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 320                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 321                         }
 322                 }
 323         }
 324         spin_unlock_bh(&iboe->lock);
 325
 326         if (!ret && hw_update) {
 327                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 328                 kfree(gids);
 329         }
 330
 331         return ret;
 332 }
 333
 334 static int mlx4_ib_del_gid(struct ib_device *device,
 335                            u8 port_num,
 336                            unsigned int index,
 337                            void **context)
 338 {
 339         struct gid_cache_context *ctx = *context;
 340         struct mlx4_ib_dev *ibdev = to_mdev(device);
 341         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 342         struct mlx4_port_gid_table   *port_gid_table;
 343         int ret = 0;
 344         int hw_update = 0;
 345         struct gid_entry *gids = NULL;
 346
 347         if (!rdma_cap_roce_gid_table(device, port_num))
 348                 return -EINVAL;
 349
 350         if (port_num > MLX4_MAX_PORTS)
 351                 return -EINVAL;
 352
 353         port_gid_table = &iboe->gids[port_num - 1];
 354         spin_lock_bh(&iboe->lock);
 355         if (ctx) {
 356                 ctx->refcount--;
 357                 if (!ctx->refcount) {
 358                         unsigned int real_index = ctx->real_index;
 359
 360                         memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
 361                         kfree(port_gid_table->gids[real_index].ctx);
 362                         port_gid_table->gids[real_index].ctx = NULL;
 363                         hw_update = 1;
 364                 }
 365         }
 366         if (!ret && hw_update) {
 367                 int i;
 368
 369                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 370                 if (!gids) {
 371                         ret = -ENOMEM;
 372                 } else {
 373                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 374                                 memcpy(&gids[i].gid,
 375                                        &port_gid_table->gids[i].gid,
 376                                        sizeof(union ib_gid));
 377                                 gids[i].gid_type =
 378                                     port_gid_table->gids[i].gid_type;
 379                         }
 380                 }
 381         }
 382         spin_unlock_bh(&iboe->lock);
 383
 384         if (!ret && hw_update) {
 385                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 386                 kfree(gids);
 387         }
 388         return ret;
 389 }
 390
 391 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 392                                     u8 port_num, int index)
 393 {
 394         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 395         struct gid_cache_context *ctx = NULL;
 396         union ib_gid gid;
 397         struct mlx4_port_gid_table   *port_gid_table;
 398         int real_index = -EINVAL;
 399         int i;
 400         int ret;
 401         unsigned long flags;
 402         struct ib_gid_attr attr;
 403
 404         if (port_num > MLX4_MAX_PORTS)
 405                 return -EINVAL;
 406
 407         if (mlx4_is_bonded(ibdev->dev))
 408                 port_num = 1;
 409
 410         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 411                 return index;
 412
 413         ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
 414         if (ret)
 415                 return ret;
 416
 417         if (attr.ndev)
 418                 if_rele(attr.ndev);
 419
 420         if (!memcmp(&gid, &zgid, sizeof(gid)))
 421                 return -EINVAL;
 422
 423         spin_lock_irqsave(&iboe->lock, flags);
 424         port_gid_table = &iboe->gids[port_num - 1];
 425
 426         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 427                 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
 428                     attr.gid_type == port_gid_table->gids[i].gid_type) {
 429                         ctx = port_gid_table->gids[i].ctx;
 430                         break;
 431                 }
 432         if (ctx)
 433                 real_index = ctx->real_index;
 434         spin_unlock_irqrestore(&iboe->lock, flags);
 435         return real_index;
 436 }
 437
 438 static int mlx4_ib_query_device(struct ib_device *ibdev,
 439                                 struct ib_device_attr *props,
 440                                 struct ib_udata *uhw)
 441 {
 442         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 443         struct ib_smp *in_mad  = NULL;
 444         struct ib_smp *out_mad = NULL;
 445         int err = -ENOMEM;
 446         int have_ib_ports;
 447         struct mlx4_uverbs_ex_query_device cmd;
 448         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 449         struct mlx4_clock_params clock_params;
 450
 451         if (uhw->inlen) {
 452                 if (uhw->inlen < sizeof(cmd))
 453                         return -EINVAL;
 454
 455                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 456                 if (err)
 457                         return err;
 458
 459                 if (cmd.comp_mask)
 460                         return -EINVAL;
 461
 462                 if (cmd.reserved)
 463                         return -EINVAL;
 464         }
 465
 466         resp.response_length = offsetof(typeof(resp), response_length) +
 467                 sizeof(resp.response_length);
 468         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 469         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 470         if (!in_mad || !out_mad)
 471                 goto out;
 472
 473         init_query_mad(in_mad);
 474         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 475
 476         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 477                            1, NULL, NULL, in_mad, out_mad);
 478         if (err)
 479                 goto out;
 480
 481         memset(props, 0, sizeof *props);
 482
 483         have_ib_ports = num_ib_ports(dev->dev);
 484
 485         props->fw_ver = dev->dev->caps.fw_ver;
 486         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 487                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 488                 IB_DEVICE_SYS_IMAGE_GUID                |
 489                 IB_DEVICE_RC_RNR_NAK_GEN                |
 490                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 491         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 492                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 493         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 494                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 495         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 496                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 497         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 498                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 499         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 500                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 501         if (dev->dev->caps.max_gso_sz &&
 502             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 503             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 504                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 505         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 506                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 507         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 508             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 509             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 510                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 511         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 512                 props->device_cap_flags |= IB_DEVICE_XRC;
 513         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 514                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 515         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 516                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 517                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 518                 else
 519                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 520         }
 521         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 522                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 523
 524         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 525
 526         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 527                 0xffffff;
 528         props->vendor_part_id      = dev->dev->persist->pdev->device;
 529         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 530         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 531
 532         props->max_mr_size         = ~0ull;
 533         props->page_size_cap       = dev->dev->caps.page_size_cap;
 534         props->max_qp              = dev->dev->quotas.qp;
 535         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 536         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 537                                          dev->dev->caps.max_rq_sg);
 538         props->max_sge_rd          = MLX4_MAX_SGE_RD;
 539         props->max_cq              = dev->dev->quotas.cq;
 540         props->max_cqe             = dev->dev->caps.max_cqes;
 541         props->max_mr              = dev->dev->quotas.mpt;
 542         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 543         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 544         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 545         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 546         props->max_srq             = dev->dev->quotas.srq;
 547         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 548         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 549         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 550         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 551         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 552                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 553         props->masked_atomic_cap   = props->atomic_cap;
 554         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 555         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 556         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 557         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 558                                            props->max_mcast_grp;
 559         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 560         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 561         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 562
 563         if (!mlx4_is_slave(dev->dev))
 564                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 565
 566         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 567                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 568                 if (!err && !mlx4_is_slave(dev->dev)) {
 569                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 570                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 571                 }
 572         }
 573
 574         if (uhw->outlen) {
 575                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 576                 if (err)
 577                         goto out;
 578         }
 579 out:
 580         kfree(in_mad);
 581         kfree(out_mad);
 582
 583         return err;
 584 }
 585
 586 static enum rdma_link_layer
 587 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 588 {
 589         struct mlx4_dev *dev = to_mdev(device)->dev;
 590
 591         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 592                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 593 }
 594
 595 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 596                               struct ib_port_attr *props, int netw_view)
 597 {
 598         struct ib_smp *in_mad  = NULL;
 599         struct ib_smp *out_mad = NULL;
 600         int ext_active_speed;
 601         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 602         int err = -ENOMEM;
 603
 604         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 605         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 606         if (!in_mad || !out_mad)
 607                 goto out;
 608
 609         init_query_mad(in_mad);
 610         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 611         in_mad->attr_mod = cpu_to_be32(port);
 612
 613         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 614                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 615
 616         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 617                                 in_mad, out_mad);
 618         if (err)
 619                 goto out;
 620
 621
 622         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 623         props->lmc              = out_mad->data[34] & 0x7;
 624         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 625         props->sm_sl            = out_mad->data[36] & 0xf;
 626         props->state            = out_mad->data[32] & 0xf;
 627         props->phys_state       = out_mad->data[33] >> 4;
 628         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 629         if (netw_view)
 630                 props->gid_tbl_len = out_mad->data[50];
 631         else
 632                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 633         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 634         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 635         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 636         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 637         props->active_width     = out_mad->data[31] & 0xf;
 638         props->active_speed     = out_mad->data[35] >> 4;
 639         props->max_mtu          = out_mad->data[41] & 0xf;
 640         props->active_mtu       = out_mad->data[36] >> 4;
 641         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 642         props->max_vl_num       = out_mad->data[37] >> 4;
 643         props->init_type_reply  = out_mad->data[41] >> 4;
 644
 645         /* Check if extended speeds (EDR/FDR/...) are supported */
 646         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 647                 ext_active_speed = out_mad->data[62] >> 4;
 648
 649                 switch (ext_active_speed) {
 650                 case 1:
 651                         props->active_speed = IB_SPEED_FDR;
 652                         break;
 653                 case 2:
 654                         props->active_speed = IB_SPEED_EDR;
 655                         break;
 656                 }
 657         }
 658
 659         /* If reported active speed is QDR, check if is FDR-10 */
 660         if (props->active_speed == IB_SPEED_QDR) {
 661                 init_query_mad(in_mad);
 662                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 663                 in_mad->attr_mod = cpu_to_be32(port);
 664
 665                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 666                                    NULL, NULL, in_mad, out_mad);
 667                 if (err)
 668                         goto out;
 669
 670                 /* Checking LinkSpeedActive for FDR-10 */
 671                 if (out_mad->data[15] & 0x1)
 672                         props->active_speed = IB_SPEED_FDR10;
 673         }
 674
 675         /* Avoid wrong speed value returned by FW if the IB link is down. */
 676         if (props->state == IB_PORT_DOWN)
 677                  props->active_speed = IB_SPEED_SDR;
 678
 679 out:
 680         kfree(in_mad);
 681         kfree(out_mad);
 682         return err;
 683 }
 684
 685 static u8 state_to_phys_state(enum ib_port_state state)
 686 {
 687         return state == IB_PORT_ACTIVE ? 5 : 3;
 688 }
 689
 690 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 691                                struct ib_port_attr *props, int netw_view)
 692 {
 693
 694         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 695         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 696         struct ifnet *ndev;
 697         enum ib_mtu tmp;
 698         struct mlx4_cmd_mailbox *mailbox;
 699         int err = 0;
 700         int is_bonded = mlx4_is_bonded(mdev->dev);
 701
 702         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 703         if (IS_ERR(mailbox))
 704                 return PTR_ERR(mailbox);
 705
 706         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 707                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 708                            MLX4_CMD_WRAPPED);
 709         if (err)
 710                 goto out;
 711
 712         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ?
 713                                                 IB_WIDTH_4X : IB_WIDTH_1X;
 714         props->active_speed     = IB_SPEED_QDR;
 715         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 716         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 717         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 718         props->pkey_tbl_len     = 1;
 719         props->max_mtu          = IB_MTU_4096;
 720         props->max_vl_num       = 2;
 721         props->state            = IB_PORT_DOWN;
 722         props->phys_state       = state_to_phys_state(props->state);
 723         props->active_mtu       = IB_MTU_256;
 724         spin_lock_bh(&iboe->lock);
 725         ndev = iboe->netdevs[port - 1];
 726         if (ndev && is_bonded) {
 727 #if 0
 728                 rcu_read_lock(); /* required to get upper dev */
 729                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 730                 rcu_read_unlock();
 731 #endif
 732         }
 733         if (!ndev)
 734                 goto out_unlock;
 735
 736         tmp = iboe_get_mtu(ndev->if_mtu);
 737         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 738
 739         props->state            = ((ndev->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
 740                                    ndev->if_link_state == LINK_STATE_UP) ?
 741                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 742         props->phys_state       = state_to_phys_state(props->state);
 743 out_unlock:
 744         spin_unlock_bh(&iboe->lock);
 745 out:
 746         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 747         return err;
 748 }
 749
 750 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 751                          struct ib_port_attr *props, int netw_view)
 752 {
 753         int err;
 754
 755         memset(props, 0, sizeof *props);
 756
 757         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 758                 ib_link_query_port(ibdev, port, props, netw_view) :
 759                                 eth_link_query_port(ibdev, port, props, netw_view);
 760
 761         return err;
 762 }
 763
 764 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 765                               struct ib_port_attr *props)
 766 {
 767         /* returns host view */
 768         return __mlx4_ib_query_port(ibdev, port, props, 0);
 769 }
 770
 771 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 772                         union ib_gid *gid, int netw_view)
 773 {
 774         struct ib_smp *in_mad  = NULL;
 775         struct ib_smp *out_mad = NULL;
 776         int err = -ENOMEM;
 777         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 778         int clear = 0;
 779         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 780
 781         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 782         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 783         if (!in_mad || !out_mad)
 784                 goto out;
 785
 786         init_query_mad(in_mad);
 787         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 788         in_mad->attr_mod = cpu_to_be32(port);
 789
 790         if (mlx4_is_mfunc(dev->dev) && netw_view)
 791                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 792
 793         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 794         if (err)
 795                 goto out;
 796
 797         memcpy(gid->raw, out_mad->data + 8, 8);
 798
 799         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 800                 if (index) {
 801                         /* For any index > 0, return the null guid */
 802                         err = 0;
 803                         clear = 1;
 804                         goto out;
 805                 }
 806         }
 807
 808         init_query_mad(in_mad);
 809         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 810         in_mad->attr_mod = cpu_to_be32(index / 8);
 811
 812         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 813                            NULL, NULL, in_mad, out_mad);
 814         if (err)
 815                 goto out;
 816
 817         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 818
 819 out:
 820         if (clear)
 821                 memset(gid->raw + 8, 0, 8);
 822         kfree(in_mad);
 823         kfree(out_mad);
 824         return err;
 825 }
 826
 827 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 828                              union ib_gid *gid)
 829 {
 830         int ret;
 831
 832         if (rdma_protocol_ib(ibdev, port))
 833                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 834
 835         if (!rdma_protocol_roce(ibdev, port))
 836                 return -ENODEV;
 837
 838         if (!rdma_cap_roce_gid_table(ibdev, port))
 839                 return -ENODEV;
 840
 841         ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
 842         if (ret == -EAGAIN) {
 843                 memcpy(gid, &zgid, sizeof(*gid));
 844                 return 0;
 845         }
 846
 847         return ret;
 848 }
 849
 850 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
 851 {
 852         union sl2vl_tbl_to_u64 sl2vl64;
 853         struct ib_smp *in_mad  = NULL;
 854         struct ib_smp *out_mad = NULL;
 855         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 856         int err = -ENOMEM;
 857         int jj;
 858
 859         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 860                 *sl2vl_tbl = 0;
 861                 return 0;
 862         }
 863
 864         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 865         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 866         if (!in_mad || !out_mad)
 867                 goto out;
 868
 869         init_query_mad(in_mad);
 870         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 871         in_mad->attr_mod = 0;
 872
 873         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 874                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 875
 876         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 877                            in_mad, out_mad);
 878         if (err)
 879                 goto out;
 880
 881         for (jj = 0; jj < 8; jj++)
 882                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 883         *sl2vl_tbl = sl2vl64.sl64;
 884
 885 out:
 886         kfree(in_mad);
 887         kfree(out_mad);
 888         return err;
 889 }
 890
 891 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 892 {
 893         u64 sl2vl;
 894         int i;
 895         int err;
 896
 897         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 898                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 899                         continue;
 900                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 901                 if (err) {
 902                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 903                                i, err);
 904                         sl2vl = 0;
 905                 }
 906                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 907         }
 908 }
 909
 910 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 911                          u16 *pkey, int netw_view)
 912 {
 913         struct ib_smp *in_mad  = NULL;
 914         struct ib_smp *out_mad = NULL;
 915         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 916         int err = -ENOMEM;
 917
 918         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 919         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 920         if (!in_mad || !out_mad)
 921                 goto out;
 922
 923         init_query_mad(in_mad);
 924         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 925         in_mad->attr_mod = cpu_to_be32(index / 32);
 926
 927         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 928                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 929
 930         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 931                            in_mad, out_mad);
 932         if (err)
 933                 goto out;
 934
 935         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 936
 937 out:
 938         kfree(in_mad);
 939         kfree(out_mad);
 940         return err;
 941 }
 942
 943 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 944 {
 945         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 946 }
 947
 948 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 949                                  struct ib_device_modify *props)
 950 {
 951         struct mlx4_cmd_mailbox *mailbox;
 952         unsigned long flags;
 953
 954         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 955                 return -EOPNOTSUPP;
 956
 957         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 958                 return 0;
 959
 960         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 961                 return -EOPNOTSUPP;
 962
 963         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 964         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 965         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 966
 967         /*
 968          * If possible, pass node desc to FW, so it can generate
 969          * a 144 trap.  If cmd fails, just ignore.
 970          */
 971         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 972         if (IS_ERR(mailbox))
 973                 return 0;
 974
 975         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 976         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 977                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 978
 979         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 980
 981         return 0;
 982 }
 983
 984 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 985                             u32 cap_mask)
 986 {
 987         struct mlx4_cmd_mailbox *mailbox;
 988         int err;
 989
 990         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 991         if (IS_ERR(mailbox))
 992                 return PTR_ERR(mailbox);
 993
 994         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 995                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 996                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 997         } else {
 998                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 999                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
1000         }
1001
1002         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
1003                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1004                        MLX4_CMD_WRAPPED);
1005
1006         mlx4_free_cmd_mailbox(dev->dev, mailbox);
1007         return err;
1008 }
1009
1010 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
1011                                struct ib_port_modify *props)
1012 {
1013         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1014         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1015         struct ib_port_attr attr;
1016         u32 cap_mask;
1017         int err;
1018
1019         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1020          * of whether port link layer is ETH or IB. For ETH ports, qkey
1021          * violations and port capabilities are not meaningful.
1022          */
1023         if (is_eth)
1024                 return 0;
1025
1026         mutex_lock(&mdev->cap_mask_mutex);
1027
1028         err = mlx4_ib_query_port(ibdev, port, &attr);
1029         if (err)
1030                 goto out;
1031
1032         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1033                 ~props->clr_port_cap_mask;
1034
1035         err = mlx4_ib_SET_PORT(mdev, port,
1036                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1037                                cap_mask);
1038
1039 out:
1040         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1041         return err;
1042 }
1043
1044 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
1045                                                   struct ib_udata *udata)
1046 {
1047         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1048         struct mlx4_ib_ucontext *context;
1049         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1050         struct mlx4_ib_alloc_ucontext_resp resp;
1051         int err;
1052
1053         if (!dev->ib_active)
1054                 return ERR_PTR(-EAGAIN);
1055
1056         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1057                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1058                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1059                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1060         } else {
1061                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1062                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1063                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1064                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1065                 resp.cqe_size         = dev->dev->caps.cqe_size;
1066         }
1067
1068         context = kzalloc(sizeof(*context), GFP_KERNEL);
1069         if (!context)
1070                 return ERR_PTR(-ENOMEM);
1071
1072         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1073         if (err) {
1074                 kfree(context);
1075                 return ERR_PTR(err);
1076         }
1077
1078         INIT_LIST_HEAD(&context->db_page_list);
1079         mutex_init(&context->db_page_mutex);
1080
1081         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1082                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1083         else
1084                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1085
1086         if (err) {
1087                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1088                 kfree(context);
1089                 return ERR_PTR(-EFAULT);
1090         }
1091
1092         return &context->ibucontext;
1093 }
1094
1095 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1096 {
1097         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1098
1099         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1100         kfree(context);
1101
1102         return 0;
1103 }
1104
1105 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
1106 {
1107         /* vma_open is called when a new VMA is created on top of our VMA.
1108          * This is done through either mremap flow or split_vma (usually due
1109          * to mlock, madvise, munmap, etc.). We do not support a clone of the
1110          * vma, as this VMA is strongly hardware related. Therefore we set the
1111          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1112          * calling us again and trying to do incorrect actions. We assume that
1113          * the original vma size is exactly a single page that there will be no
1114          * "splitting" operations on.
1115          */
1116         area->vm_ops = NULL;
1117 }
1118
1119 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
1120 {
1121         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1122
1123         /* It's guaranteed that all VMAs opened on a FD are closed before the
1124          * file itself is closed, therefore no sync is needed with the regular
1125          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1126          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1127          * The close operation is usually called under mm->mmap_sem except when
1128          * process is exiting.  The exiting case is handled explicitly as part
1129          * of mlx4_ib_disassociate_ucontext.
1130          */
1131         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1132                                 area->vm_private_data;
1133
1134         /* set the vma context pointer to null in the mlx4_ib driver's private
1135          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1136          */
1137         mlx4_ib_vma_priv_data->vma = NULL;
1138 }
1139
1140 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1141         .open = mlx4_ib_vma_open,
1142         .close = mlx4_ib_vma_close
1143 };
1144
1145 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1146                                  struct mlx4_ib_vma_private_data *vma_private_data)
1147 {
1148         vma_private_data->vma = vma;
1149         vma->vm_private_data = vma_private_data;
1150         vma->vm_ops =  &mlx4_ib_vm_ops;
1151 }
1152
1153 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1154 {
1155         struct mlx4_ib_dev *dev = to_mdev(context->device);
1156         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1157
1158         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1159                 return -EINVAL;
1160
1161         if (vma->vm_pgoff == 0) {
1162                 /* We prevent double mmaping on same context */
1163                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1164                         return -EINVAL;
1165
1166                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1167
1168                 if (io_remap_pfn_range(vma, vma->vm_start,
1169                                        to_mucontext(context)->uar.pfn,
1170                                        PAGE_SIZE, vma->vm_page_prot))
1171                         return -EAGAIN;
1172
1173                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1174
1175         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1176                 /* We prevent double mmaping on same context */
1177                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1178                         return -EINVAL;
1179
1180                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1181
1182                 if (io_remap_pfn_range(vma, vma->vm_start,
1183                                        to_mucontext(context)->uar.pfn +
1184                                        dev->dev->caps.num_uars,
1185                                        PAGE_SIZE, vma->vm_page_prot))
1186                         return -EAGAIN;
1187
1188                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1189
1190         } else if (vma->vm_pgoff == 3) {
1191                 struct mlx4_clock_params params;
1192                 int ret;
1193
1194                 /* We prevent double mmaping on same context */
1195                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1196                         return -EINVAL;
1197
1198                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1199
1200                 if (ret)
1201                         return ret;
1202
1203                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1204                 if (io_remap_pfn_range(vma, vma->vm_start,
1205                                        (pci_resource_start(dev->dev->persist->pdev,
1206                                                            params.bar) +
1207                                         params.offset)
1208                                        >> PAGE_SHIFT,
1209                                        PAGE_SIZE, vma->vm_page_prot))
1210                         return -EAGAIN;
1211
1212                 mlx4_ib_set_vma_data(vma,
1213                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1214         } else {
1215                 return -EINVAL;
1216         }
1217
1218         return 0;
1219 }
1220
1221 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1222                                       struct ib_ucontext *context,
1223                                       struct ib_udata *udata)
1224 {
1225         struct mlx4_ib_pd *pd;
1226         int err;
1227
1228         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1229         if (!pd)
1230                 return ERR_PTR(-ENOMEM);
1231
1232         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1233         if (err) {
1234                 kfree(pd);
1235                 return ERR_PTR(err);
1236         }
1237
1238         if (context)
1239                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1240                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1241                         kfree(pd);
1242                         return ERR_PTR(-EFAULT);
1243                 }
1244
1245         return &pd->ibpd;
1246 }
1247
1248 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1249 {
1250         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1251         kfree(pd);
1252
1253         return 0;
1254 }
1255
1256 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1257                                           struct ib_ucontext *context,
1258                                           struct ib_udata *udata)
1259 {
1260         struct mlx4_ib_xrcd *xrcd;
1261         struct ib_cq_init_attr cq_attr = {};
1262         int err;
1263
1264         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1265                 return ERR_PTR(-ENOSYS);
1266
1267         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1268         if (!xrcd)
1269                 return ERR_PTR(-ENOMEM);
1270
1271         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1272         if (err)
1273                 goto err1;
1274
1275         xrcd->pd = ib_alloc_pd(ibdev, 0);
1276         if (IS_ERR(xrcd->pd)) {
1277                 err = PTR_ERR(xrcd->pd);
1278                 goto err2;
1279         }
1280
1281         cq_attr.cqe = 1;
1282         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1283         if (IS_ERR(xrcd->cq)) {
1284                 err = PTR_ERR(xrcd->cq);
1285                 goto err3;
1286         }
1287
1288         return &xrcd->ibxrcd;
1289
1290 err3:
1291         ib_dealloc_pd(xrcd->pd);
1292 err2:
1293         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1294 err1:
1295         kfree(xrcd);
1296         return ERR_PTR(err);
1297 }
1298
1299 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1300 {
1301         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1302         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1303         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1304         kfree(xrcd);
1305
1306         return 0;
1307 }
1308
1309 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1310 {
1311         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1312         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1313         struct mlx4_ib_gid_entry *ge;
1314
1315         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1316         if (!ge)
1317                 return -ENOMEM;
1318
1319         ge->gid = *gid;
1320         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1321                 ge->port = mqp->port;
1322                 ge->added = 1;
1323         }
1324
1325         mutex_lock(&mqp->mutex);
1326         list_add_tail(&ge->list, &mqp->gid_list);
1327         mutex_unlock(&mqp->mutex);
1328
1329         return 0;
1330 }
1331
1332 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1333                                           struct mlx4_ib_counters *ctr_table)
1334 {
1335         struct counter_index *counter, *tmp_count;
1336
1337         mutex_lock(&ctr_table->mutex);
1338         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1339                                  list) {
1340                 if (counter->allocated)
1341                         mlx4_counter_free(ibdev->dev, counter->index);
1342                 list_del(&counter->list);
1343                 kfree(counter);
1344         }
1345         mutex_unlock(&ctr_table->mutex);
1346 }
1347
1348 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1349                    union ib_gid *gid)
1350 {
1351         struct ifnet *ndev;
1352         int ret = 0;
1353
1354         if (!mqp->port)
1355                 return 0;
1356
1357         spin_lock_bh(&mdev->iboe.lock);
1358         ndev = mdev->iboe.netdevs[mqp->port - 1];
1359         if (ndev)
1360                 if_ref(ndev);
1361         spin_unlock_bh(&mdev->iboe.lock);
1362
1363         if (ndev) {
1364                 ret = 1;
1365                 if_rele(ndev);
1366         }
1367
1368         return ret;
1369 }
1370
1371 struct mlx4_ib_steering {
1372         struct list_head list;
1373         struct mlx4_flow_reg_id reg_id;
1374         union ib_gid gid;
1375 };
1376
1377 #define LAST_ETH_FIELD vlan_tag
1378 #define LAST_IB_FIELD sl
1379 #define LAST_IPV4_FIELD dst_ip
1380 #define LAST_TCP_UDP_FIELD src_port
1381
1382 /* Field is the last supported field */
1383 #define FIELDS_NOT_SUPPORTED(filter, field)\
1384         memchr_inv((void *)&filter.field  +\
1385                    sizeof(filter.field), 0,\
1386                    sizeof(filter) -\
1387                    offsetof(typeof(filter), field) -\
1388                    sizeof(filter.field))
1389
1390 static int parse_flow_attr(struct mlx4_dev *dev,
1391                            u32 qp_num,
1392                            union ib_flow_spec *ib_spec,
1393                            struct _rule_hw *mlx4_spec)
1394 {
1395         enum mlx4_net_trans_rule_id type;
1396
1397         switch (ib_spec->type) {
1398         case IB_FLOW_SPEC_ETH:
1399                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1400                         return -ENOTSUPP;
1401
1402                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1403                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1404                        ETH_ALEN);
1405                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1406                        ETH_ALEN);
1407                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1408                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1409                 break;
1410         case IB_FLOW_SPEC_IB:
1411                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1412                         return -ENOTSUPP;
1413
1414                 type = MLX4_NET_TRANS_RULE_ID_IB;
1415                 mlx4_spec->ib.l3_qpn =
1416                         cpu_to_be32(qp_num);
1417                 mlx4_spec->ib.qpn_mask =
1418                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1419                 break;
1420
1421
1422         case IB_FLOW_SPEC_IPV4:
1423                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1424                         return -ENOTSUPP;
1425
1426                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1427                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1428                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1429                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1430                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1431                 break;
1432
1433         case IB_FLOW_SPEC_TCP:
1434         case IB_FLOW_SPEC_UDP:
1435                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1436                         return -ENOTSUPP;
1437
1438                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1439                                         MLX4_NET_TRANS_RULE_ID_TCP :
1440                                         MLX4_NET_TRANS_RULE_ID_UDP;
1441                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1442                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1443                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1444                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1445                 break;
1446
1447         default:
1448                 return -EINVAL;
1449         }
1450         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1451             mlx4_hw_rule_sz(dev, type) < 0)
1452                 return -EINVAL;
1453         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1454         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1455         return mlx4_hw_rule_sz(dev, type);
1456 }
1457
1458 struct default_rules {
1459         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1460         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1461         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1462         __u8  link_layer;
1463 };
1464 static const struct default_rules default_table[] = {
1465         {
1466                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1467                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1468                 .rules_create_list = {IB_FLOW_SPEC_IB},
1469                 .link_layer = IB_LINK_LAYER_INFINIBAND
1470         }
1471 };
1472
1473 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1474                                          struct ib_flow_attr *flow_attr)
1475 {
1476         int i, j, k;
1477         void *ib_flow;
1478         const struct default_rules *pdefault_rules = default_table;
1479         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1480
1481         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1482                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1483                 memset(&field_types, 0, sizeof(field_types));
1484
1485                 if (link_layer != pdefault_rules->link_layer)
1486                         continue;
1487
1488                 ib_flow = flow_attr + 1;
1489                 /* we assume the specs are sorted */
1490                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1491                      j < flow_attr->num_of_specs; k++) {
1492                         union ib_flow_spec *current_flow =
1493                                 (union ib_flow_spec *)ib_flow;
1494
1495                         /* same layer but different type */
1496                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1497                              (pdefault_rules->mandatory_fields[k] &
1498                               IB_FLOW_SPEC_LAYER_MASK)) &&
1499                             (current_flow->type !=
1500                              pdefault_rules->mandatory_fields[k]))
1501                                 goto out;
1502
1503                         /* same layer, try match next one */
1504                         if (current_flow->type ==
1505                             pdefault_rules->mandatory_fields[k]) {
1506                                 j++;
1507                                 ib_flow +=
1508                                         ((union ib_flow_spec *)ib_flow)->size;
1509                         }
1510                 }
1511
1512                 ib_flow = flow_attr + 1;
1513                 for (j = 0; j < flow_attr->num_of_specs;
1514                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1515                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1516                                 /* same layer and same type */
1517                                 if (((union ib_flow_spec *)ib_flow)->type ==
1518                                     pdefault_rules->mandatory_not_fields[k])
1519                                         goto out;
1520
1521                 return i;
1522         }
1523 out:
1524         return -1;
1525 }
1526
1527 static int __mlx4_ib_create_default_rules(
1528                 struct mlx4_ib_dev *mdev,
1529                 struct ib_qp *qp,
1530                 const struct default_rules *pdefault_rules,
1531                 struct _rule_hw *mlx4_spec) {
1532         int size = 0;
1533         int i;
1534
1535         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1536                 int ret;
1537                 union ib_flow_spec ib_spec;
1538                 switch (pdefault_rules->rules_create_list[i]) {
1539                 case 0:
1540                         /* no rule */
1541                         continue;
1542                 case IB_FLOW_SPEC_IB:
1543                         ib_spec.type = IB_FLOW_SPEC_IB;
1544                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1545
1546                         break;
1547                 default:
1548                         /* invalid rule */
1549                         return -EINVAL;
1550                 }
1551                 /* We must put empty rule, qpn is being ignored */
1552                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1553                                       mlx4_spec);
1554                 if (ret < 0) {
1555                         pr_info("invalid parsing\n");
1556                         return -EINVAL;
1557                 }
1558
1559                 mlx4_spec = (void *)mlx4_spec + ret;
1560                 size += ret;
1561         }
1562         return size;
1563 }
1564
1565 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1566                           int domain,
1567                           enum mlx4_net_trans_promisc_mode flow_type,
1568                           u64 *reg_id)
1569 {
1570         int ret, i;
1571         int size = 0;
1572         void *ib_flow;
1573         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1574         struct mlx4_cmd_mailbox *mailbox;
1575         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1576         int default_flow;
1577
1578         static const u16 __mlx4_domain[] = {
1579                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1580                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1581                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1582                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1583         };
1584
1585         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1586                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1587                 return -EINVAL;
1588         }
1589
1590         if (domain >= IB_FLOW_DOMAIN_NUM) {
1591                 pr_err("Invalid domain value %d\n", domain);
1592                 return -EINVAL;
1593         }
1594
1595         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1596                 return -EINVAL;
1597
1598         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1599         if (IS_ERR(mailbox))
1600                 return PTR_ERR(mailbox);
1601         ctrl = mailbox->buf;
1602
1603         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1604                                  flow_attr->priority);
1605         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1606         ctrl->port = flow_attr->port;
1607         ctrl->qpn = cpu_to_be32(qp->qp_num);
1608
1609         ib_flow = flow_attr + 1;
1610         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1611         /* Add default flows */
1612         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1613         if (default_flow >= 0) {
1614                 ret = __mlx4_ib_create_default_rules(
1615                                 mdev, qp, default_table + default_flow,
1616                                 mailbox->buf + size);
1617                 if (ret < 0) {
1618                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1619                         return -EINVAL;
1620                 }
1621                 size += ret;
1622         }
1623         for (i = 0; i < flow_attr->num_of_specs; i++) {
1624                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1625                                       mailbox->buf + size);
1626                 if (ret < 0) {
1627                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1628                         return -EINVAL;
1629                 }
1630                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1631                 size += ret;
1632         }
1633
1634         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1635                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1636                            MLX4_CMD_WRAPPED);
1637         if (ret == -ENOMEM)
1638                 pr_err("mcg table is full. Fail to register network rule.\n");
1639         else if (ret == -ENXIO)
1640                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1641         else if (ret)
1642                 pr_err("Invalid argument. Fail to register network rule.\n");
1643
1644         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1645         return ret;
1646 }
1647
1648 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1649 {
1650         int err;
1651         err = mlx4_cmd(dev, reg_id, 0, 0,
1652                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1653                        MLX4_CMD_WRAPPED);
1654         if (err)
1655                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1656                        (long long)reg_id);
1657         return err;
1658 }
1659
1660 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1661                                     u64 *reg_id)
1662 {
1663         void *ib_flow;
1664         union ib_flow_spec *ib_spec;
1665         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1666         int err = 0;
1667
1668         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1669             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1670                 return 0; /* do nothing */
1671
1672         ib_flow = flow_attr + 1;
1673         ib_spec = (union ib_flow_spec *)ib_flow;
1674
1675         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1676                 return 0; /* do nothing */
1677
1678         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1679                                     flow_attr->port, qp->qp_num,
1680                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1681                                     reg_id);
1682         return err;
1683 }
1684
1685 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1686                                       struct ib_flow_attr *flow_attr,
1687                                       enum mlx4_net_trans_promisc_mode *type)
1688 {
1689         int err = 0;
1690
1691         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1692             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1693             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1694                 return -EOPNOTSUPP;
1695         }
1696
1697         if (flow_attr->num_of_specs == 0) {
1698                 type[0] = MLX4_FS_MC_SNIFFER;
1699                 type[1] = MLX4_FS_UC_SNIFFER;
1700         } else {
1701                 union ib_flow_spec *ib_spec;
1702
1703                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1704                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1705                         return -EINVAL;
1706
1707                 /* if all is zero than MC and UC */
1708                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1709                         type[0] = MLX4_FS_MC_SNIFFER;
1710                         type[1] = MLX4_FS_UC_SNIFFER;
1711                 } else {
1712                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1713                                             ib_spec->eth.mask.dst_mac[1],
1714                                             ib_spec->eth.mask.dst_mac[2],
1715                                             ib_spec->eth.mask.dst_mac[3],
1716                                             ib_spec->eth.mask.dst_mac[4],
1717                                             ib_spec->eth.mask.dst_mac[5]};
1718
1719                         /* Above xor was only on MC bit, non empty mask is valid
1720                          * only if this bit is set and rest are zero.
1721                          */
1722                         if (!is_zero_ether_addr(&mac[0]))
1723                                 return -EINVAL;
1724
1725                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1726                                 type[0] = MLX4_FS_MC_SNIFFER;
1727                         else
1728                                 type[0] = MLX4_FS_UC_SNIFFER;
1729                 }
1730         }
1731
1732         return err;
1733 }
1734
1735 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1736                                     struct ib_flow_attr *flow_attr,
1737                                     int domain)
1738 {
1739         int err = 0, i = 0, j = 0;
1740         struct mlx4_ib_flow *mflow;
1741         enum mlx4_net_trans_promisc_mode type[2];
1742         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1743         int is_bonded = mlx4_is_bonded(dev);
1744
1745         if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1746                 return ERR_PTR(-EINVAL);
1747
1748         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1749             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1750                 return ERR_PTR(-EOPNOTSUPP);
1751
1752         memset(type, 0, sizeof(type));
1753
1754         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1755         if (!mflow) {
1756                 err = -ENOMEM;
1757                 goto err_free;
1758         }
1759
1760         switch (flow_attr->type) {
1761         case IB_FLOW_ATTR_NORMAL:
1762                 /* If dont trap flag (continue match) is set, under specific
1763                  * condition traffic be replicated to given qp,
1764                  * without stealing it
1765                  */
1766                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1767                         err = mlx4_ib_add_dont_trap_rule(dev,
1768                                                          flow_attr,
1769                                                          type);
1770                         if (err)
1771                                 goto err_free;
1772                 } else {
1773                         type[0] = MLX4_FS_REGULAR;
1774                 }
1775                 break;
1776
1777         case IB_FLOW_ATTR_ALL_DEFAULT:
1778                 type[0] = MLX4_FS_ALL_DEFAULT;
1779                 break;
1780
1781         case IB_FLOW_ATTR_MC_DEFAULT:
1782                 type[0] = MLX4_FS_MC_DEFAULT;
1783                 break;
1784
1785         case IB_FLOW_ATTR_SNIFFER:
1786                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1787                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1788                 break;
1789
1790         default:
1791                 err = -EINVAL;
1792                 goto err_free;
1793         }
1794
1795         while (i < ARRAY_SIZE(type) && type[i]) {
1796                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1797                                             &mflow->reg_id[i].id);
1798                 if (err)
1799                         goto err_create_flow;
1800                 if (is_bonded) {
1801                         /* Application always sees one port so the mirror rule
1802                          * must be on port #2
1803                          */
1804                         flow_attr->port = 2;
1805                         err = __mlx4_ib_create_flow(qp, flow_attr,
1806                                                     domain, type[j],
1807                                                     &mflow->reg_id[j].mirror);
1808                         flow_attr->port = 1;
1809                         if (err)
1810                                 goto err_create_flow;
1811                         j++;
1812                 }
1813
1814                 i++;
1815         }
1816
1817         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1818                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1819                                                &mflow->reg_id[i].id);
1820                 if (err)
1821                         goto err_create_flow;
1822
1823                 if (is_bonded) {
1824                         flow_attr->port = 2;
1825                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1826                                                        &mflow->reg_id[j].mirror);
1827                         flow_attr->port = 1;
1828                         if (err)
1829                                 goto err_create_flow;
1830                         j++;
1831                 }
1832                 /* function to create mirror rule */
1833                 i++;
1834         }
1835
1836         return &mflow->ibflow;
1837
1838 err_create_flow:
1839         while (i) {
1840                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1841                                              mflow->reg_id[i].id);
1842                 i--;
1843         }
1844
1845         while (j) {
1846                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1847                                              mflow->reg_id[j].mirror);
1848                 j--;
1849         }
1850 err_free:
1851         kfree(mflow);
1852         return ERR_PTR(err);
1853 }
1854
1855 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1856 {
1857         int err, ret = 0;
1858         int i = 0;
1859         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1860         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1861
1862         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1863                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1864                 if (err)
1865                         ret = err;
1866                 if (mflow->reg_id[i].mirror) {
1867                         err = __mlx4_ib_destroy_flow(mdev->dev,
1868                                                      mflow->reg_id[i].mirror);
1869                         if (err)
1870                                 ret = err;
1871                 }
1872                 i++;
1873         }
1874
1875         kfree(mflow);
1876         return ret;
1877 }
1878
1879 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1880 {
1881         int err;
1882         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1883         struct mlx4_dev *dev = mdev->dev;
1884         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1885         struct mlx4_ib_steering *ib_steering = NULL;
1886         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1887         struct mlx4_flow_reg_id reg_id;
1888
1889         if (mdev->dev->caps.steering_mode ==
1890             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1891                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1892                 if (!ib_steering)
1893                         return -ENOMEM;
1894         }
1895
1896         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1897                                     !!(mqp->flags &
1898                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1899                                     prot, &reg_id.id);
1900         if (err) {
1901                 pr_err("multicast attach op failed, err %d\n", err);
1902                 goto err_malloc;
1903         }
1904
1905         reg_id.mirror = 0;
1906         if (mlx4_is_bonded(dev)) {
1907                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1908                                             (mqp->port == 1) ? 2 : 1,
1909                                             !!(mqp->flags &
1910                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1911                                             prot, &reg_id.mirror);
1912                 if (err)
1913                         goto err_add;
1914         }
1915
1916         err = add_gid_entry(ibqp, gid);
1917         if (err)
1918                 goto err_add;
1919
1920         if (ib_steering) {
1921                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1922                 ib_steering->reg_id = reg_id;
1923                 mutex_lock(&mqp->mutex);
1924                 list_add(&ib_steering->list, &mqp->steering_rules);
1925                 mutex_unlock(&mqp->mutex);
1926         }
1927         return 0;
1928
1929 err_add:
1930         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1931                               prot, reg_id.id);
1932         if (reg_id.mirror)
1933                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1934                                       prot, reg_id.mirror);
1935 err_malloc:
1936         kfree(ib_steering);
1937
1938         return err;
1939 }
1940
1941 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1942 {
1943         struct mlx4_ib_gid_entry *ge;
1944         struct mlx4_ib_gid_entry *tmp;
1945         struct mlx4_ib_gid_entry *ret = NULL;
1946
1947         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1948                 if (!memcmp(raw, ge->gid.raw, 16)) {
1949                         ret = ge;
1950                         break;
1951                 }
1952         }
1953
1954         return ret;
1955 }
1956
1957 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1958 {
1959         int err;
1960         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1961         struct mlx4_dev *dev = mdev->dev;
1962         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1963         struct ifnet *ndev;
1964         struct mlx4_ib_gid_entry *ge;
1965         struct mlx4_flow_reg_id reg_id = {0, 0};
1966         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1967
1968         if (mdev->dev->caps.steering_mode ==
1969             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1970                 struct mlx4_ib_steering *ib_steering;
1971
1972                 mutex_lock(&mqp->mutex);
1973                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1974                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1975                                 list_del(&ib_steering->list);
1976                                 break;
1977                         }
1978                 }
1979                 mutex_unlock(&mqp->mutex);
1980                 if (&ib_steering->list == &mqp->steering_rules) {
1981                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1982                         return -EINVAL;
1983                 }
1984                 reg_id = ib_steering->reg_id;
1985                 kfree(ib_steering);
1986         }
1987
1988         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1989                                     prot, reg_id.id);
1990         if (err)
1991                 return err;
1992
1993         if (mlx4_is_bonded(dev)) {
1994                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1995                                             prot, reg_id.mirror);
1996                 if (err)
1997                         return err;
1998         }
1999
2000         mutex_lock(&mqp->mutex);
2001         ge = find_gid_entry(mqp, gid->raw);
2002         if (ge) {
2003                 spin_lock_bh(&mdev->iboe.lock);
2004                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
2005                 if (ndev)
2006                         if_ref(ndev);
2007                 spin_unlock_bh(&mdev->iboe.lock);
2008                 if (ndev)
2009                         if_rele(ndev);
2010                 list_del(&ge->list);
2011                 kfree(ge);
2012         } else
2013                 pr_warn("could not find mgid entry\n");
2014
2015         mutex_unlock(&mqp->mutex);
2016
2017         return 0;
2018 }
2019
2020 static int init_node_data(struct mlx4_ib_dev *dev)
2021 {
2022         struct ib_smp *in_mad  = NULL;
2023         struct ib_smp *out_mad = NULL;
2024         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
2025         int err = -ENOMEM;
2026
2027         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
2028         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
2029         if (!in_mad || !out_mad)
2030                 goto out;
2031
2032         init_query_mad(in_mad);
2033         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
2034         if (mlx4_is_master(dev->dev))
2035                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2036
2037         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2038         if (err)
2039                 goto out;
2040
2041         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2042
2043         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2044
2045         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2046         if (err)
2047                 goto out;
2048
2049         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2050         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2051
2052 out:
2053         kfree(in_mad);
2054         kfree(out_mad);
2055         return err;
2056 }
2057
2058 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2059                         char *buf)
2060 {
2061         struct mlx4_ib_dev *dev =
2062                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2063         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2064 }
2065
2066 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2067                         char *buf)
2068 {
2069         struct mlx4_ib_dev *dev =
2070                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2071         return sprintf(buf, "%x\n", dev->dev->rev_id);
2072 }
2073
2074 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2075                           char *buf)
2076 {
2077         struct mlx4_ib_dev *dev =
2078                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2079         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2080                        dev->dev->board_id);
2081 }
2082
2083 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
2084 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
2085 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
2086
2087 static struct device_attribute *mlx4_class_attributes[] = {
2088         &dev_attr_hw_rev,
2089         &dev_attr_hca_type,
2090         &dev_attr_board_id
2091 };
2092
2093 struct diag_counter {
2094         const char *name;
2095         u32 offset;
2096 };
2097
2098 #define DIAG_COUNTER(_name, _offset)                    \
2099         { .name = #_name, .offset = _offset }
2100
2101 static const struct diag_counter diag_basic[] = {
2102         DIAG_COUNTER(rq_num_lle, 0x00),
2103         DIAG_COUNTER(sq_num_lle, 0x04),
2104         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2105         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2106         DIAG_COUNTER(rq_num_lpe, 0x18),
2107         DIAG_COUNTER(sq_num_lpe, 0x1C),
2108         DIAG_COUNTER(rq_num_wrfe, 0x20),
2109         DIAG_COUNTER(sq_num_wrfe, 0x24),
2110         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2111         DIAG_COUNTER(sq_num_bre, 0x34),
2112         DIAG_COUNTER(sq_num_rire, 0x44),
2113         DIAG_COUNTER(rq_num_rire, 0x48),
2114         DIAG_COUNTER(sq_num_rae, 0x4C),
2115         DIAG_COUNTER(rq_num_rae, 0x50),
2116         DIAG_COUNTER(sq_num_roe, 0x54),
2117         DIAG_COUNTER(sq_num_tree, 0x5C),
2118         DIAG_COUNTER(sq_num_rree, 0x64),
2119         DIAG_COUNTER(rq_num_rnr, 0x68),
2120         DIAG_COUNTER(sq_num_rnr, 0x6C),
2121         DIAG_COUNTER(rq_num_oos, 0x100),
2122         DIAG_COUNTER(sq_num_oos, 0x104),
2123 };
2124
2125 static const struct diag_counter diag_ext[] = {
2126         DIAG_COUNTER(rq_num_dup, 0x130),
2127         DIAG_COUNTER(sq_num_to, 0x134),
2128 };
2129
2130 static const struct diag_counter diag_device_only[] = {
2131         DIAG_COUNTER(num_cqovf, 0x1A0),
2132         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2133 };
2134
2135 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2136                                                     u8 port_num)
2137 {
2138         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2139         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2140
2141         if (!diag[!!port_num].name)
2142                 return NULL;
2143
2144         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2145                                           diag[!!port_num].num_counters,
2146                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2147 }
2148
2149 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2150                                 struct rdma_hw_stats *stats,
2151                                 u8 port, int index)
2152 {
2153         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2154         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2155         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2156                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2157         int ret;
2158         int i;
2159
2160         ret = mlx4_query_diag_counters(dev->dev,
2161                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2162                                        diag[!!port].offset, hw_value,
2163                                        diag[!!port].num_counters, port);
2164
2165         if (ret)
2166                 return ret;
2167
2168         for (i = 0; i < diag[!!port].num_counters; i++)
2169                 stats->value[i] = hw_value[i];
2170
2171         return diag[!!port].num_counters;
2172 }
2173
2174 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2175                                          const char ***name,
2176                                          u32 **offset,
2177                                          u32 *num,
2178                                          bool port)
2179 {
2180         u32 num_counters;
2181
2182         num_counters = ARRAY_SIZE(diag_basic);
2183
2184         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2185                 num_counters += ARRAY_SIZE(diag_ext);
2186
2187         if (!port)
2188                 num_counters += ARRAY_SIZE(diag_device_only);
2189
2190         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2191         if (!*name)
2192                 return -ENOMEM;
2193
2194         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2195         if (!*offset)
2196                 goto err_name;
2197
2198         *num = num_counters;
2199
2200         return 0;
2201
2202 err_name:
2203         kfree(*name);
2204         return -ENOMEM;
2205 }
2206
2207 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2208                                        const char **name,
2209                                        u32 *offset,
2210                                        bool port)
2211 {
2212         int i;
2213         int j;
2214
2215         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2216                 name[i] = diag_basic[i].name;
2217                 offset[i] = diag_basic[i].offset;
2218         }
2219
2220         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2221                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2222                         name[j] = diag_ext[i].name;
2223                         offset[j] = diag_ext[i].offset;
2224                 }
2225         }
2226
2227         if (!port) {
2228                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2229                         name[j] = diag_device_only[i].name;
2230                         offset[j] = diag_device_only[i].offset;
2231                 }
2232         }
2233 }
2234
2235 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2236 {
2237         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2238         int i;
2239         int ret;
2240         bool per_port = !!(ibdev->dev->caps.flags2 &
2241                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2242
2243         if (mlx4_is_slave(ibdev->dev))
2244                 return 0;
2245
2246         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2247                 /* i == 1 means we are building port counters */
2248                 if (i && !per_port)
2249                         continue;
2250
2251                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2252                                                     &diag[i].offset,
2253                                                     &diag[i].num_counters, i);
2254                 if (ret)
2255                         goto err_alloc;
2256
2257                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2258                                            diag[i].offset, i);
2259         }
2260
2261         ibdev->ib_dev.get_hw_stats      = mlx4_ib_get_hw_stats;
2262         ibdev->ib_dev.alloc_hw_stats    = mlx4_ib_alloc_hw_stats;
2263
2264         return 0;
2265
2266 err_alloc:
2267         if (i) {
2268                 kfree(diag[i - 1].name);
2269                 kfree(diag[i - 1].offset);
2270         }
2271
2272         return ret;
2273 }
2274
2275 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2276 {
2277         int i;
2278
2279         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2280                 kfree(ibdev->diag_counters[i].offset);
2281                 kfree(ibdev->diag_counters[i].name);
2282         }
2283 }
2284
2285 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2286 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2287                                struct ifnet *dev,
2288                                int port)
2289 {
2290         u64 new_smac = 0;
2291         u64 release_mac = MLX4_IB_INVALID_MAC;
2292         struct mlx4_ib_qp *qp;
2293
2294         new_smac = mlx4_mac_to_u64(IF_LLADDR(dev));
2295
2296         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2297
2298         /* no need for update QP1 and mac registration in non-SRIOV */
2299         if (!mlx4_is_mfunc(ibdev->dev))
2300                 return;
2301
2302         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2303         qp = ibdev->qp1_proxy[port - 1];
2304         if (qp) {
2305                 int new_smac_index;
2306                 u64 old_smac;
2307                 struct mlx4_update_qp_params update_params;
2308
2309                 mutex_lock(&qp->mutex);
2310                 old_smac = qp->pri.smac;
2311                 if (new_smac == old_smac)
2312                         goto unlock;
2313
2314                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2315
2316                 if (new_smac_index < 0)
2317                         goto unlock;
2318
2319                 update_params.smac_index = new_smac_index;
2320                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2321                                    &update_params)) {
2322                         release_mac = new_smac;
2323                         goto unlock;
2324                 }
2325                 /* if old port was zero, no mac was yet registered for this QP */
2326                 if (qp->pri.smac_port)
2327                         release_mac = old_smac;
2328                 qp->pri.smac = new_smac;
2329                 qp->pri.smac_port = port;
2330                 qp->pri.smac_index = new_smac_index;
2331         }
2332
2333 unlock:
2334         if (release_mac != MLX4_IB_INVALID_MAC)
2335                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2336         if (qp)
2337                 mutex_unlock(&qp->mutex);
2338         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2339 }
2340
2341 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2342                                  struct ifnet *dev,
2343                                  unsigned long event)
2344
2345 {
2346         struct mlx4_ib_iboe *iboe;
2347         int update_qps_port = -1;
2348         int port;
2349
2350         iboe = &ibdev->iboe;
2351
2352         spin_lock_bh(&iboe->lock);
2353         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2354
2355                 iboe->netdevs[port - 1] =
2356                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2357
2358                 if (dev == iboe->netdevs[port - 1] &&
2359                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2360                      event == NETDEV_UP || event == NETDEV_CHANGE))
2361                         update_qps_port = port;
2362
2363         }
2364         spin_unlock_bh(&iboe->lock);
2365
2366         if (update_qps_port > 0)
2367                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2368 }
2369
2370 static int mlx4_ib_netdev_event(struct notifier_block *this,
2371                                 unsigned long event, void *ptr)
2372 {
2373         struct ifnet *dev = netdev_notifier_info_to_ifp(ptr);
2374         struct mlx4_ib_dev *ibdev;
2375
2376         if (dev->if_vnet != &init_net)
2377                 return NOTIFY_DONE;
2378
2379         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2380         mlx4_ib_scan_netdevs(ibdev, dev, event);
2381
2382         return NOTIFY_DONE;
2383 }
2384
2385 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2386 {
2387         int port;
2388         int slave;
2389         int i;
2390
2391         if (mlx4_is_master(ibdev->dev)) {
2392                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2393                      ++slave) {
2394                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2395                                 for (i = 0;
2396                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2397                                      ++i) {
2398                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2399                                         /* master has the identity virt2phys pkey mapping */
2400                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2401                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2402                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2403                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2404                                 }
2405                         }
2406                 }
2407                 /* initialize pkey cache */
2408                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2409                         for (i = 0;
2410                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2411                              ++i)
2412                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2413                                         (i) ? 0 : 0xFFFF;
2414                 }
2415         }
2416 }
2417
2418 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2419 {
2420         int i, j, eq = 0, total_eqs = 0;
2421
2422         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2423                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2424         if (!ibdev->eq_table)
2425                 return;
2426
2427         for (i = 1; i <= dev->caps.num_ports; i++) {
2428                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2429                      j++, total_eqs++) {
2430                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2431                                 continue;
2432                         ibdev->eq_table[eq] = total_eqs;
2433                         if (!mlx4_assign_eq(dev, i,
2434                                             &ibdev->eq_table[eq]))
2435                                 eq++;
2436                         else
2437                                 ibdev->eq_table[eq] = -1;
2438                 }
2439         }
2440
2441         for (i = eq; i < dev->caps.num_comp_vectors;
2442              ibdev->eq_table[i++] = -1)
2443                 ;
2444
2445         /* Advertise the new number of EQs to clients */
2446         ibdev->ib_dev.num_comp_vectors = eq;
2447 }
2448
2449 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2450 {
2451         int i;
2452         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2453
2454         /* no eqs were allocated */
2455         if (!ibdev->eq_table)
2456                 return;
2457
2458         /* Reset the advertised EQ number */
2459         ibdev->ib_dev.num_comp_vectors = 0;
2460
2461         for (i = 0; i < total_eqs; i++)
2462                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2463
2464         kfree(ibdev->eq_table);
2465         ibdev->eq_table = NULL;
2466 }
2467
2468 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2469                                struct ib_port_immutable *immutable)
2470 {
2471         struct ib_port_attr attr;
2472         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2473         int err;
2474
2475         err = mlx4_ib_query_port(ibdev, port_num, &attr);
2476         if (err)
2477                 return err;
2478
2479         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2480         immutable->gid_tbl_len = attr.gid_tbl_len;
2481
2482         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2483                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2484         } else {
2485                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2486                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2487                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2488                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2489                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2490         }
2491
2492         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2493
2494         return 0;
2495 }
2496
2497 static void get_fw_ver_str(struct ib_device *device, char *str,
2498                            size_t str_len)
2499 {
2500         struct mlx4_ib_dev *dev =
2501                 container_of(device, struct mlx4_ib_dev, ib_dev);
2502         snprintf(str, str_len, "%d.%d.%d",
2503                  (int) (dev->dev->caps.fw_ver >> 32),
2504                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2505                  (int) dev->dev->caps.fw_ver & 0xffff);
2506 }
2507
2508 static void *mlx4_ib_add(struct mlx4_dev *dev)
2509 {
2510         struct mlx4_ib_dev *ibdev;
2511         int num_ports;
2512         int i, j;
2513         int err;
2514         struct mlx4_ib_iboe *iboe;
2515         int ib_num_ports = 0;
2516         int num_req_counters;
2517         int allocated;
2518         u32 counter_index;
2519         struct counter_index *new_counter_index = NULL;
2520
2521         pr_info_once("%s", mlx4_ib_version);
2522
2523         num_ports = 0;
2524         mlx4_foreach_ib_transport_port(i, dev)
2525                 num_ports++;
2526
2527         /* No point in registering a device with no ports... */
2528         if (num_ports == 0)
2529                 return NULL;
2530
2531         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2532         if (!ibdev) {
2533                 dev_err(&dev->persist->pdev->dev,
2534                         "Device struct alloc failed\n");
2535                 return NULL;
2536         }
2537
2538         iboe = &ibdev->iboe;
2539
2540         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2541                 goto err_dealloc;
2542
2543         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2544                 goto err_pd;
2545
2546         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2547                                  PAGE_SIZE);
2548         if (!ibdev->uar_map)
2549                 goto err_uar;
2550         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2551
2552         ibdev->dev = dev;
2553         ibdev->bond_next_port   = 0;
2554
2555         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2556         ibdev->ib_dev.owner             = THIS_MODULE;
2557         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2558         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2559         ibdev->num_ports                = num_ports;
2560         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2561                                                 1 : ibdev->num_ports;
2562         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2563         ibdev->ib_dev.dma_device        = &dev->persist->pdev->dev;
2564         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2565         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2566         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2567
2568         if (dev->caps.userspace_caps)
2569                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2570         else
2571                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2572
2573         ibdev->ib_dev.uverbs_cmd_mask   =
2574                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2575                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2576                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2577                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2578                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2579                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2580                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2581                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2582                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2583                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2584                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2585                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2586                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2587                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2588                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2589                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2590                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2591                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2592                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2593                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2594                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2595                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2596                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2597                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2598
2599         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2600         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2601         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2602         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2603         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2604         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2605         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2606         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2607         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2608         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2609         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2610         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2611         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2612         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2613         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2614         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2615         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2616         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2617         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2618         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2619         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2620         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2621         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2622         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2623         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2624         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2625         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2626         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2627         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2628         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2629         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2630         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2631         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2632         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2633         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2634         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2635         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2636         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2637         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2638         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2639         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2640         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2641         ibdev->ib_dev.get_dev_fw_str    = get_fw_ver_str;
2642
2643         if (!mlx4_is_slave(ibdev->dev)) {
2644                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2645                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2646                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2647                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2648         }
2649
2650         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2651             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2652                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2653                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2654
2655                 ibdev->ib_dev.uverbs_cmd_mask |=
2656                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2657                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2658         }
2659
2660         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2661                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2662                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2663                 ibdev->ib_dev.uverbs_cmd_mask |=
2664                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2665                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2666         }
2667
2668         if (check_flow_steering_support(dev)) {
2669                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2670                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2671                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2672
2673                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2674                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2675                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2676         }
2677
2678         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2679                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2680                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2681                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2682
2683         mlx4_ib_alloc_eqs(dev, ibdev);
2684
2685         spin_lock_init(&iboe->lock);
2686
2687         if (init_node_data(ibdev))
2688                 goto err_map;
2689         mlx4_init_sl2vl_tbl(ibdev);
2690
2691         for (i = 0; i < ibdev->num_ports; ++i) {
2692                 mutex_init(&ibdev->counters_table[i].mutex);
2693                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2694         }
2695
2696         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2697         for (i = 0; i < num_req_counters; ++i) {
2698                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2699                 allocated = 0;
2700                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2701                                                 IB_LINK_LAYER_ETHERNET) {
2702                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2703                         /* if failed to allocate a new counter, use default */
2704                         if (err)
2705                                 counter_index =
2706                                         mlx4_get_default_counter_index(dev,
2707                                                                        i + 1);
2708                         else
2709                                 allocated = 1;
2710                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2711                         counter_index = mlx4_get_default_counter_index(dev,
2712                                                                        i + 1);
2713                 }
2714                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2715                                             GFP_KERNEL);
2716                 if (!new_counter_index) {
2717                         if (allocated)
2718                                 mlx4_counter_free(ibdev->dev, counter_index);
2719                         goto err_counter;
2720                 }
2721                 new_counter_index->index = counter_index;
2722                 new_counter_index->allocated = allocated;
2723                 list_add_tail(&new_counter_index->list,
2724                               &ibdev->counters_table[i].counters_list);
2725                 ibdev->counters_table[i].default_counter = counter_index;
2726                 pr_info("counter index %d for port %d allocated %d\n",
2727                         counter_index, i + 1, allocated);
2728         }
2729         if (mlx4_is_bonded(dev))
2730                 for (i = 1; i < ibdev->num_ports ; ++i) {
2731                         new_counter_index =
2732                                         kmalloc(sizeof(struct counter_index),
2733                                                 GFP_KERNEL);
2734                         if (!new_counter_index)
2735                                 goto err_counter;
2736                         new_counter_index->index = counter_index;
2737                         new_counter_index->allocated = 0;
2738                         list_add_tail(&new_counter_index->list,
2739                                       &ibdev->counters_table[i].counters_list);
2740                         ibdev->counters_table[i].default_counter =
2741                                                                 counter_index;
2742                 }
2743
2744         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2745                 ib_num_ports++;
2746
2747         spin_lock_init(&ibdev->sm_lock);
2748         mutex_init(&ibdev->cap_mask_mutex);
2749         INIT_LIST_HEAD(&ibdev->qp_list);
2750         spin_lock_init(&ibdev->reset_flow_resource_lock);
2751
2752         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2753             ib_num_ports) {
2754                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2755                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2756                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2757                                             &ibdev->steer_qpn_base, 0);
2758                 if (err)
2759                         goto err_counter;
2760
2761                 ibdev->ib_uc_qpns_bitmap =
2762                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2763                                 sizeof(long),
2764                                 GFP_KERNEL);
2765                 if (!ibdev->ib_uc_qpns_bitmap) {
2766                         dev_err(&dev->persist->pdev->dev,
2767                                 "bit map alloc failed\n");
2768                         goto err_steer_qp_release;
2769                 }
2770
2771                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2772
2773                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2774                                 dev, ibdev->steer_qpn_base,
2775                                 ibdev->steer_qpn_base +
2776                                 ibdev->steer_qpn_count - 1);
2777                 if (err)
2778                         goto err_steer_free_bitmap;
2779         }
2780
2781         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2782                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2783
2784         if (mlx4_ib_alloc_diag_counters(ibdev))
2785                 goto err_steer_free_bitmap;
2786
2787         if (ib_register_device(&ibdev->ib_dev, NULL))
2788                 goto err_diag_counters;
2789
2790         if (mlx4_ib_mad_init(ibdev))
2791                 goto err_reg;
2792
2793         if (mlx4_ib_init_sriov(ibdev))
2794                 goto err_mad;
2795
2796         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE ||
2797             dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2798                 if (!iboe->nb.notifier_call) {
2799                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2800                         err = register_netdevice_notifier(&iboe->nb);
2801                         if (err) {
2802                                 iboe->nb.notifier_call = NULL;
2803                                 goto err_notif;
2804                         }
2805                 }
2806                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2807                         err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2808                         if (err) {
2809                                 goto err_notif;
2810                         }
2811                 }
2812         }
2813
2814         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2815                 if (device_create_file(&ibdev->ib_dev.dev,
2816                                        mlx4_class_attributes[j]))
2817                         goto err_notif;
2818         }
2819
2820         ibdev->ib_active = true;
2821
2822         if (mlx4_is_mfunc(ibdev->dev))
2823                 init_pkeys(ibdev);
2824
2825         /* create paravirt contexts for any VFs which are active */
2826         if (mlx4_is_master(ibdev->dev)) {
2827                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2828                         if (j == mlx4_master_func_num(ibdev->dev))
2829                                 continue;
2830                         if (mlx4_is_slave_active(ibdev->dev, j))
2831                                 do_slave_init(ibdev, j, 1);
2832                 }
2833         }
2834         return ibdev;
2835
2836 err_notif:
2837         if (ibdev->iboe.nb.notifier_call) {
2838                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2839                         pr_warn("failure unregistering notifier\n");
2840                 ibdev->iboe.nb.notifier_call = NULL;
2841         }
2842         flush_workqueue(wq);
2843
2844         mlx4_ib_close_sriov(ibdev);
2845
2846 err_mad:
2847         mlx4_ib_mad_cleanup(ibdev);
2848
2849 err_reg:
2850         ib_unregister_device(&ibdev->ib_dev);
2851
2852 err_diag_counters:
2853         mlx4_ib_diag_cleanup(ibdev);
2854
2855 err_steer_free_bitmap:
2856         kfree(ibdev->ib_uc_qpns_bitmap);
2857
2858 err_steer_qp_release:
2859         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2860                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2861                                       ibdev->steer_qpn_count);
2862 err_counter:
2863         for (i = 0; i < ibdev->num_ports; ++i)
2864                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2865
2866 err_map:
2867         iounmap(ibdev->uar_map);
2868
2869 err_uar:
2870         mlx4_uar_free(dev, &ibdev->priv_uar);
2871
2872 err_pd:
2873         mlx4_pd_free(dev, ibdev->priv_pdn);
2874
2875 err_dealloc:
2876         ib_dealloc_device(&ibdev->ib_dev);
2877
2878         return NULL;
2879 }
2880
2881 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2882 {
2883         int offset;
2884
2885         WARN_ON(!dev->ib_uc_qpns_bitmap);
2886
2887         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2888                                          dev->steer_qpn_count,
2889                                          get_count_order(count));
2890         if (offset < 0)
2891                 return offset;
2892
2893         *qpn = dev->steer_qpn_base + offset;
2894         return 0;
2895 }
2896
2897 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2898 {
2899         if (!qpn ||
2900             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2901                 return;
2902
2903         BUG_ON(qpn < dev->steer_qpn_base);
2904
2905         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2906                               qpn - dev->steer_qpn_base,
2907                               get_count_order(count));
2908 }
2909
2910 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2911                          int is_attach)
2912 {
2913         int err;
2914         size_t flow_size;
2915         struct ib_flow_attr *flow = NULL;
2916         struct ib_flow_spec_ib *ib_spec;
2917
2918         if (is_attach) {
2919                 flow_size = sizeof(struct ib_flow_attr) +
2920                             sizeof(struct ib_flow_spec_ib);
2921                 flow = kzalloc(flow_size, GFP_KERNEL);
2922                 if (!flow)
2923                         return -ENOMEM;
2924                 flow->port = mqp->port;
2925                 flow->num_of_specs = 1;
2926                 flow->size = flow_size;
2927                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2928                 ib_spec->type = IB_FLOW_SPEC_IB;
2929                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2930                 /* Add an empty rule for IB L2 */
2931                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2932
2933                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2934                                             IB_FLOW_DOMAIN_NIC,
2935                                             MLX4_FS_REGULAR,
2936                                             &mqp->reg_id);
2937         } else {
2938                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2939         }
2940         kfree(flow);
2941         return err;
2942 }
2943
2944 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2945 {
2946         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2947         int p;
2948
2949         ibdev->ib_active = false;
2950         flush_workqueue(wq);
2951
2952         mlx4_ib_close_sriov(ibdev);
2953         mlx4_ib_mad_cleanup(ibdev);
2954         ib_unregister_device(&ibdev->ib_dev);
2955         mlx4_ib_diag_cleanup(ibdev);
2956         if (ibdev->iboe.nb.notifier_call) {
2957                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2958                         pr_warn("failure unregistering notifier\n");
2959                 ibdev->iboe.nb.notifier_call = NULL;
2960         }
2961
2962         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2963                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2964                                       ibdev->steer_qpn_count);
2965                 kfree(ibdev->ib_uc_qpns_bitmap);
2966         }
2967
2968         iounmap(ibdev->uar_map);
2969         for (p = 0; p < ibdev->num_ports; ++p)
2970                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
2971
2972         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2973                 mlx4_CLOSE_PORT(dev, p);
2974
2975         mlx4_ib_free_eqs(dev, ibdev);
2976
2977         mlx4_uar_free(dev, &ibdev->priv_uar);
2978         mlx4_pd_free(dev, ibdev->priv_pdn);
2979         ib_dealloc_device(&ibdev->ib_dev);
2980 }
2981
2982 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2983 {
2984         struct mlx4_ib_demux_work **dm = NULL;
2985         struct mlx4_dev *dev = ibdev->dev;
2986         int i;
2987         unsigned long flags;
2988         struct mlx4_active_ports actv_ports;
2989         unsigned int ports;
2990         unsigned int first_port;
2991
2992         if (!mlx4_is_master(dev))
2993                 return;
2994
2995         actv_ports = mlx4_get_active_ports(dev, slave);
2996         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2997         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2998
2999         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3000         if (!dm) {
3001                 pr_err("failed to allocate memory for tunneling qp update\n");
3002                 return;
3003         }
3004
3005         for (i = 0; i < ports; i++) {
3006                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3007                 if (!dm[i]) {
3008                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
3009                         while (--i >= 0)
3010                                 kfree(dm[i]);
3011                         goto out;
3012                 }
3013                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3014                 dm[i]->port = first_port + i + 1;
3015                 dm[i]->slave = slave;
3016                 dm[i]->do_init = do_init;
3017                 dm[i]->dev = ibdev;
3018         }
3019         /* initialize or tear down tunnel QPs for the slave */
3020         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3021         if (!ibdev->sriov.is_going_down) {
3022                 for (i = 0; i < ports; i++)
3023                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3024                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3025         } else {
3026                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3027                 for (i = 0; i < ports; i++)
3028                         kfree(dm[i]);
3029         }
3030 out:
3031         kfree(dm);
3032         return;
3033 }
3034
3035 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3036 {
3037         struct mlx4_ib_qp *mqp;
3038         unsigned long flags_qp;
3039         unsigned long flags_cq;
3040         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3041         struct list_head    cq_notify_list;
3042         struct mlx4_cq *mcq;
3043         unsigned long flags;
3044
3045         pr_warn("mlx4_ib_handle_catas_error was started\n");
3046         INIT_LIST_HEAD(&cq_notify_list);
3047
3048         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3049         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3050
3051         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3052                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3053                 if (mqp->sq.tail != mqp->sq.head) {
3054                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3055                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3056                         if (send_mcq->mcq.comp &&
3057                             mqp->ibqp.send_cq->comp_handler) {
3058                                 if (!send_mcq->mcq.reset_notify_added) {
3059                                         send_mcq->mcq.reset_notify_added = 1;
3060                                         list_add_tail(&send_mcq->mcq.reset_notify,
3061                                                       &cq_notify_list);
3062                                 }
3063                         }
3064                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3065                 }
3066                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3067                 /* Now, handle the QP's receive queue */
3068                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3069                 /* no handling is needed for SRQ */
3070                 if (!mqp->ibqp.srq) {
3071                         if (mqp->rq.tail != mqp->rq.head) {
3072                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3073                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3074                                 if (recv_mcq->mcq.comp &&
3075                                     mqp->ibqp.recv_cq->comp_handler) {
3076                                         if (!recv_mcq->mcq.reset_notify_added) {
3077                                                 recv_mcq->mcq.reset_notify_added = 1;
3078                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3079                                                               &cq_notify_list);
3080                                         }
3081                                 }
3082                                 spin_unlock_irqrestore(&recv_mcq->lock,
3083                                                        flags_cq);
3084                         }
3085                 }
3086                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3087         }
3088
3089         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3090                 mcq->comp(mcq);
3091         }
3092         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3093         pr_warn("mlx4_ib_handle_catas_error ended\n");
3094 }
3095
3096 static void handle_bonded_port_state_event(struct work_struct *work)
3097 {
3098         struct ib_event_work *ew =
3099                 container_of(work, struct ib_event_work, work);
3100         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3101         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3102         int i;
3103         struct ib_event ibev;
3104
3105         kfree(ew);
3106         spin_lock_bh(&ibdev->iboe.lock);
3107         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3108                 struct ifnet *curr_netdev = ibdev->iboe.netdevs[i];
3109                 enum ib_port_state curr_port_state;
3110
3111                 if (!curr_netdev)
3112                         continue;
3113
3114                 curr_port_state =
3115                         ((curr_netdev->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
3116                          curr_netdev->if_link_state == LINK_STATE_UP) ?
3117                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3118
3119                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3120                         curr_port_state : IB_PORT_ACTIVE;
3121         }
3122         spin_unlock_bh(&ibdev->iboe.lock);
3123
3124         ibev.device = &ibdev->ib_dev;
3125         ibev.element.port_num = 1;
3126         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3127                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3128
3129         ib_dispatch_event(&ibev);
3130 }
3131
3132 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3133 {
3134         u64 sl2vl;
3135         int err;
3136
3137         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3138         if (err) {
3139                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3140                        port, err);
3141                 sl2vl = 0;
3142         }
3143         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3144 }
3145
3146 static void ib_sl2vl_update_work(struct work_struct *work)
3147 {
3148         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3149         struct mlx4_ib_dev *mdev = ew->ib_dev;
3150         int port = ew->port;
3151
3152         mlx4_ib_sl2vl_update(mdev, port);
3153
3154         kfree(ew);
3155 }
3156
3157 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3158                                      int port)
3159 {
3160         struct ib_event_work *ew;
3161
3162         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3163         if (ew) {
3164                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3165                 ew->port = port;
3166                 ew->ib_dev = ibdev;
3167                 queue_work(wq, &ew->work);
3168         } else {
3169                 pr_err("failed to allocate memory for sl2vl update work\n");
3170         }
3171 }
3172
3173 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3174                           enum mlx4_dev_event event, unsigned long param)
3175 {
3176         struct ib_event ibev;
3177         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3178         struct mlx4_eqe *eqe = NULL;
3179         struct ib_event_work *ew;
3180         int p = 0;
3181
3182         if (mlx4_is_bonded(dev) &&
3183             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3184             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3185                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3186                 if (!ew)
3187                         return;
3188                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3189                 ew->ib_dev = ibdev;
3190                 queue_work(wq, &ew->work);
3191                 return;
3192         }
3193
3194         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3195                 eqe = (struct mlx4_eqe *)param;
3196         else
3197                 p = (int) param;
3198
3199         switch (event) {
3200         case MLX4_DEV_EVENT_PORT_UP:
3201                 if (p > ibdev->num_ports)
3202                         return;
3203                 if (!mlx4_is_slave(dev) &&
3204                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3205                         IB_LINK_LAYER_INFINIBAND) {
3206                         if (mlx4_is_master(dev))
3207                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3208                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3209                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3210                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3211                 }
3212                 ibev.event = IB_EVENT_PORT_ACTIVE;
3213                 break;
3214
3215         case MLX4_DEV_EVENT_PORT_DOWN:
3216                 if (p > ibdev->num_ports)
3217                         return;
3218                 ibev.event = IB_EVENT_PORT_ERR;
3219                 break;
3220
3221         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3222                 ibdev->ib_active = false;
3223                 ibev.event = IB_EVENT_DEVICE_FATAL;
3224                 mlx4_ib_handle_catas_error(ibdev);
3225                 break;
3226
3227         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3228                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3229                 if (!ew) {
3230                         pr_err("failed to allocate memory for events work\n");
3231                         break;
3232                 }
3233
3234                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3235                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3236                 ew->ib_dev = ibdev;
3237                 /* need to queue only for port owner, which uses GEN_EQE */
3238                 if (mlx4_is_master(dev))
3239                         queue_work(wq, &ew->work);
3240                 else
3241                         handle_port_mgmt_change_event(&ew->work);
3242                 return;
3243
3244         case MLX4_DEV_EVENT_SLAVE_INIT:
3245                 /* here, p is the slave id */
3246                 do_slave_init(ibdev, p, 1);
3247                 if (mlx4_is_master(dev)) {
3248                         int i;
3249
3250                         for (i = 1; i <= ibdev->num_ports; i++) {
3251                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3252                                         == IB_LINK_LAYER_INFINIBAND)
3253                                         mlx4_ib_slave_alias_guid_event(ibdev,
3254                                                                        p, i,
3255                                                                        1);
3256                         }
3257                 }
3258                 return;
3259
3260         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3261                 if (mlx4_is_master(dev)) {
3262                         int i;
3263
3264                         for (i = 1; i <= ibdev->num_ports; i++) {
3265                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3266                                         == IB_LINK_LAYER_INFINIBAND)
3267                                         mlx4_ib_slave_alias_guid_event(ibdev,
3268                                                                        p, i,
3269                                                                        0);
3270                         }
3271                 }
3272                 /* here, p is the slave id */
3273                 do_slave_init(ibdev, p, 0);
3274                 return;
3275
3276         default:
3277                 return;
3278         }
3279
3280         ibev.device           = ibdev_ptr;
3281         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3282
3283         ib_dispatch_event(&ibev);
3284 }
3285
3286 static struct mlx4_interface mlx4_ib_interface = {
3287         .add            = mlx4_ib_add,
3288         .remove         = mlx4_ib_remove,
3289         .event          = mlx4_ib_event,
3290         .protocol       = MLX4_PROT_IB_IPV6,
3291         .flags          = MLX4_INTFF_BONDING
3292 };
3293
3294 static int __init mlx4_ib_init(void)
3295 {
3296         int err;
3297
3298         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3299         if (!wq)
3300                 return -ENOMEM;
3301
3302         err = mlx4_ib_mcg_init();
3303         if (err)
3304                 goto clean_wq;
3305
3306         err = mlx4_register_interface(&mlx4_ib_interface);
3307         if (err)
3308                 goto clean_mcg;
3309
3310         return 0;
3311
3312 clean_mcg:
3313         mlx4_ib_mcg_destroy();
3314
3315 clean_wq:
3316         destroy_workqueue(wq);
3317         return err;
3318 }
3319
3320 static void __exit mlx4_ib_cleanup(void)
3321 {
3322         mlx4_unregister_interface(&mlx4_ib_interface);
3323         mlx4_ib_mcg_destroy();
3324         destroy_workqueue(wq);
3325 }
3326
3327 module_init_order(mlx4_ib_init, SI_ORDER_SEVENTH);
3328 module_exit_order(mlx4_ib_cleanup, SI_ORDER_SEVENTH);
3329
3330 static int
3331 mlx4ib_evhand(module_t mod, int event, void *arg)
3332 {
3333         return (0);
3334 }
3335
3336 static moduledata_t mlx4ib_mod = {
3337         .name = "mlx4ib",
3338         .evhand = mlx4ib_evhand,
3339 };
3340
3341 DECLARE_MODULE(mlx4ib, mlx4ib_mod, SI_SUB_LAST, SI_ORDER_ANY);
3342 MODULE_DEPEND(mlx4ib, mlx4, 1, 1, 1);
3343 MODULE_DEPEND(mlx4ib, ibcore, 1, 1, 1);
3344 MODULE_DEPEND(mlx4ib, linuxkpi, 1, 1, 1);