kernel/drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <net/ipv6.h>
  43 #include <net/addrconf.h>
  44
  45 #include <rdma/ib_smi.h>
  46 #include <rdma/ib_user_verbs.h>
  47 #include <rdma/ib_addr.h>
  48 #include <rdma/ib_cache.h>
  49
  50 #include <net/bonding.h>
  51
  52 #include <linux/mlx4/driver.h>
  53 #include <linux/mlx4/cmd.h>
  54 #include <linux/mlx4/qp.h>
  55
  56 #include "mlx4_ib.h"
  57 #include "user.h"
  58
  59 #define DRV_NAME        MLX4_IB_DRV_NAME
  60 #define DRV_VERSION     "2.2-1"
  61 #define DRV_RELDATE     "Feb 2014"
  62
  63 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  64 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  65 #define MLX4_IB_CARD_REV_A0   0xA0
  66
  67 MODULE_AUTHOR("Roland Dreier");
  68 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  69 MODULE_LICENSE("Dual BSD/GPL");
  70 MODULE_VERSION(DRV_VERSION);
  71
  72 int mlx4_ib_sm_guid_assign = 0;
  73 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  74 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  75
  76 static const char mlx4_ib_version[] =
  77         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  78         DRV_VERSION " (" DRV_RELDATE ")\n";
  79
  80 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  81
  82 static struct workqueue_struct *wq;
  83
  84 static void init_query_mad(struct ib_smp *mad)
  85 {
  86         mad->base_version  = 1;
  87         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  88         mad->class_version = 1;
  89         mad->method        = IB_MGMT_METHOD_GET;
  90 }
  91
  92 static int check_flow_steering_support(struct mlx4_dev *dev)
  93 {
  94         int eth_num_ports = 0;
  95         int ib_num_ports = 0;
  96
  97         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
  98
  99         if (dmfs) {
 100                 int i;
 101                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 102                         eth_num_ports++;
 103                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 104                         ib_num_ports++;
 105                 dmfs &= (!ib_num_ports ||
 106                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 107                         (!eth_num_ports ||
 108                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 109                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 110                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 111                         dmfs = 0;
 112                 }
 113         }
 114         return dmfs;
 115 }
 116
 117 static int num_ib_ports(struct mlx4_dev *dev)
 118 {
 119         int ib_ports = 0;
 120         int i;
 121
 122         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 123                 ib_ports++;
 124
 125         return ib_ports;
 126 }
 127
 128 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 129 {
 130         struct mlx4_ib_dev *ibdev = to_mdev(device);
 131         struct net_device *dev;
 132
 133         rcu_read_lock();
 134         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 135
 136         if (dev) {
 137                 if (mlx4_is_bonded(ibdev->dev)) {
 138                         struct net_device *upper = NULL;
 139
 140                         upper = netdev_master_upper_dev_get_rcu(dev);
 141                         if (upper) {
 142                                 struct net_device *active;
 143
 144                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 145                                 if (active)
 146                                         dev = active;
 147                         }
 148                 }
 149         }
 150         if (dev)
 151                 dev_hold(dev);
 152
 153         rcu_read_unlock();
 154         return dev;
 155 }
 156
 157 static int mlx4_ib_update_gids(struct gid_entry *gids,
 158                                struct mlx4_ib_dev *ibdev,
 159                                u8 port_num)
 160 {
 161         struct mlx4_cmd_mailbox *mailbox;
 162         int err;
 163         struct mlx4_dev *dev = ibdev->dev;
 164         int i;
 165         union ib_gid *gid_tbl;
 166
 167         mailbox = mlx4_alloc_cmd_mailbox(dev);
 168         if (IS_ERR(mailbox))
 169                 return -ENOMEM;
 170
 171         gid_tbl = mailbox->buf;
 172
 173         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 174                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 175
 176         err = mlx4_cmd(dev, mailbox->dma,
 177                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 178                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 179                        MLX4_CMD_WRAPPED);
 180         if (mlx4_is_bonded(dev))
 181                 err += mlx4_cmd(dev, mailbox->dma,
 182                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 183                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 184                                 MLX4_CMD_WRAPPED);
 185
 186         mlx4_free_cmd_mailbox(dev, mailbox);
 187         return err;
 188 }
 189
 190 static int mlx4_ib_add_gid(struct ib_device *device,
 191                            u8 port_num,
 192                            unsigned int index,
 193                            const union ib_gid *gid,
 194                            const struct ib_gid_attr *attr,
 195                            void **context)
 196 {
 197         struct mlx4_ib_dev *ibdev = to_mdev(device);
 198         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 199         struct mlx4_port_gid_table   *port_gid_table;
 200         int free = -1, found = -1;
 201         int ret = 0;
 202         int hw_update = 0;
 203         int i;
 204         struct gid_entry *gids = NULL;
 205
 206         if (!rdma_cap_roce_gid_table(device, port_num))
 207                 return -EINVAL;
 208
 209         if (port_num > MLX4_MAX_PORTS)
 210                 return -EINVAL;
 211
 212         if (!context)
 213                 return -EINVAL;
 214
 215         port_gid_table = &iboe->gids[port_num - 1];
 216         spin_lock_bh(&iboe->lock);
 217         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 218                 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid))) {
 219                         found = i;
 220                         break;
 221                 }
 222                 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
 223                         free = i; /* HW has space */
 224         }
 225
 226         if (found < 0) {
 227                 if (free < 0) {
 228                         ret = -ENOSPC;
 229                 } else {
 230                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 231                         if (!port_gid_table->gids[free].ctx) {
 232                                 ret = -ENOMEM;
 233                         } else {
 234                                 *context = port_gid_table->gids[free].ctx;
 235                                 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
 236                                 port_gid_table->gids[free].ctx->real_index = free;
 237                                 port_gid_table->gids[free].ctx->refcount = 1;
 238                                 hw_update = 1;
 239                         }
 240                 }
 241         } else {
 242                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 243                 *context = ctx;
 244                 ctx->refcount++;
 245         }
 246         if (!ret && hw_update) {
 247                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 248                 if (!gids) {
 249                         ret = -ENOMEM;
 250                 } else {
 251                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
 252                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 253                 }
 254         }
 255         spin_unlock_bh(&iboe->lock);
 256
 257         if (!ret && hw_update) {
 258                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 259                 kfree(gids);
 260         }
 261
 262         return ret;
 263 }
 264
 265 static int mlx4_ib_del_gid(struct ib_device *device,
 266                            u8 port_num,
 267                            unsigned int index,
 268                            void **context)
 269 {
 270         struct gid_cache_context *ctx = *context;
 271         struct mlx4_ib_dev *ibdev = to_mdev(device);
 272         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 273         struct mlx4_port_gid_table   *port_gid_table;
 274         int ret = 0;
 275         int hw_update = 0;
 276         struct gid_entry *gids = NULL;
 277
 278         if (!rdma_cap_roce_gid_table(device, port_num))
 279                 return -EINVAL;
 280
 281         if (port_num > MLX4_MAX_PORTS)
 282                 return -EINVAL;
 283
 284         port_gid_table = &iboe->gids[port_num - 1];
 285         spin_lock_bh(&iboe->lock);
 286         if (ctx) {
 287                 ctx->refcount--;
 288                 if (!ctx->refcount) {
 289                         unsigned int real_index = ctx->real_index;
 290
 291                         memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
 292                         kfree(port_gid_table->gids[real_index].ctx);
 293                         port_gid_table->gids[real_index].ctx = NULL;
 294                         hw_update = 1;
 295                 }
 296         }
 297         if (!ret && hw_update) {
 298                 int i;
 299
 300                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 301                 if (!gids) {
 302                         ret = -ENOMEM;
 303                 } else {
 304                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
 305                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 306                 }
 307         }
 308         spin_unlock_bh(&iboe->lock);
 309
 310         if (!ret && hw_update) {
 311                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 312                 kfree(gids);
 313         }
 314         return ret;
 315 }
 316
 317 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 318                                     u8 port_num, int index)
 319 {
 320         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 321         struct gid_cache_context *ctx = NULL;
 322         union ib_gid gid;
 323         struct mlx4_port_gid_table   *port_gid_table;
 324         int real_index = -EINVAL;
 325         int i;
 326         int ret;
 327         unsigned long flags;
 328
 329         if (port_num > MLX4_MAX_PORTS)
 330                 return -EINVAL;
 331
 332         if (mlx4_is_bonded(ibdev->dev))
 333                 port_num = 1;
 334
 335         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 336                 return index;
 337
 338         ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, NULL);
 339         if (ret)
 340                 return ret;
 341
 342         if (!memcmp(&gid, &zgid, sizeof(gid)))
 343                 return -EINVAL;
 344
 345         spin_lock_irqsave(&iboe->lock, flags);
 346         port_gid_table = &iboe->gids[port_num - 1];
 347
 348         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 349                 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid))) {
 350                         ctx = port_gid_table->gids[i].ctx;
 351                         break;
 352                 }
 353         if (ctx)
 354                 real_index = ctx->real_index;
 355         spin_unlock_irqrestore(&iboe->lock, flags);
 356         return real_index;
 357 }
 358
 359 static int mlx4_ib_query_device(struct ib_device *ibdev,
 360                                 struct ib_device_attr *props,
 361                                 struct ib_udata *uhw)
 362 {
 363         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 364         struct ib_smp *in_mad  = NULL;
 365         struct ib_smp *out_mad = NULL;
 366         int err = -ENOMEM;
 367         int have_ib_ports;
 368         struct mlx4_uverbs_ex_query_device cmd;
 369         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 370         struct mlx4_clock_params clock_params;
 371
 372         if (uhw->inlen) {
 373                 if (uhw->inlen < sizeof(cmd))
 374                         return -EINVAL;
 375
 376                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 377                 if (err)
 378                         return err;
 379
 380                 if (cmd.comp_mask)
 381                         return -EINVAL;
 382
 383                 if (cmd.reserved)
 384                         return -EINVAL;
 385         }
 386
 387         resp.response_length = offsetof(typeof(resp), response_length) +
 388                 sizeof(resp.response_length);
 389         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 390         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 391         if (!in_mad || !out_mad)
 392                 goto out;
 393
 394         init_query_mad(in_mad);
 395         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 396
 397         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 398                            1, NULL, NULL, in_mad, out_mad);
 399         if (err)
 400                 goto out;
 401
 402         memset(props, 0, sizeof *props);
 403
 404         have_ib_ports = num_ib_ports(dev->dev);
 405
 406         props->fw_ver = dev->dev->caps.fw_ver;
 407         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 408                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 409                 IB_DEVICE_SYS_IMAGE_GUID                |
 410                 IB_DEVICE_RC_RNR_NAK_GEN                |
 411                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 412         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 413                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 414         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 415                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 416         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 417                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 418         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 419                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 420         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 421                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 422         if (dev->dev->caps.max_gso_sz &&
 423             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 424             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 425                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 426         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 427                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 428         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 429             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 430             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 431                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 432         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 433                 props->device_cap_flags |= IB_DEVICE_XRC;
 434         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 435                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 436         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 437                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 438                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 439                 else
 440                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 441         if (dev->steering_support ==  MLX4_STEERING_MODE_DEVICE_MANAGED)
 442                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 443         }
 444
 445         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 446
 447         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 448                 0xffffff;
 449         props->vendor_part_id      = dev->dev->persist->pdev->device;
 450         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 451         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 452
 453         props->max_mr_size         = ~0ull;
 454         props->page_size_cap       = dev->dev->caps.page_size_cap;
 455         props->max_qp              = dev->dev->quotas.qp;
 456         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 457         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 458                                          dev->dev->caps.max_rq_sg);
 459         props->max_sge_rd          = MLX4_MAX_SGE_RD;
 460         props->max_cq              = dev->dev->quotas.cq;
 461         props->max_cqe             = dev->dev->caps.max_cqes;
 462         props->max_mr              = dev->dev->quotas.mpt;
 463         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 464         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 465         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 466         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 467         props->max_srq             = dev->dev->quotas.srq;
 468         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 469         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 470         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 471         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 472         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 473                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 474         props->masked_atomic_cap   = props->atomic_cap;
 475         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 476         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 477         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 478         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 479                                            props->max_mcast_grp;
 480         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 481         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 482         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 483
 484         if (!mlx4_is_slave(dev->dev))
 485                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 486
 487         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 488                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 489                 if (!err && !mlx4_is_slave(dev->dev)) {
 490                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 491                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 492                 }
 493         }
 494
 495         if (uhw->outlen) {
 496                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 497                 if (err)
 498                         goto out;
 499         }
 500 out:
 501         kfree(in_mad);
 502         kfree(out_mad);
 503
 504         return err;
 505 }
 506
 507 static enum rdma_link_layer
 508 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 509 {
 510         struct mlx4_dev *dev = to_mdev(device)->dev;
 511
 512         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 513                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 514 }
 515
 516 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 517                               struct ib_port_attr *props, int netw_view)
 518 {
 519         struct ib_smp *in_mad  = NULL;
 520         struct ib_smp *out_mad = NULL;
 521         int ext_active_speed;
 522         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 523         int err = -ENOMEM;
 524
 525         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 526         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 527         if (!in_mad || !out_mad)
 528                 goto out;
 529
 530         init_query_mad(in_mad);
 531         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 532         in_mad->attr_mod = cpu_to_be32(port);
 533
 534         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 535                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 536
 537         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 538                                 in_mad, out_mad);
 539         if (err)
 540                 goto out;
 541
 542
 543         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 544         props->lmc              = out_mad->data[34] & 0x7;
 545         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 546         props->sm_sl            = out_mad->data[36] & 0xf;
 547         props->state            = out_mad->data[32] & 0xf;
 548         props->phys_state       = out_mad->data[33] >> 4;
 549         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 550         if (netw_view)
 551                 props->gid_tbl_len = out_mad->data[50];
 552         else
 553                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 554         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 555         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 556         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 557         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 558         props->active_width     = out_mad->data[31] & 0xf;
 559         props->active_speed     = out_mad->data[35] >> 4;
 560         props->max_mtu          = out_mad->data[41] & 0xf;
 561         props->active_mtu       = out_mad->data[36] >> 4;
 562         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 563         props->max_vl_num       = out_mad->data[37] >> 4;
 564         props->init_type_reply  = out_mad->data[41] >> 4;
 565
 566         /* Check if extended speeds (EDR/FDR/...) are supported */
 567         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 568                 ext_active_speed = out_mad->data[62] >> 4;
 569
 570                 switch (ext_active_speed) {
 571                 case 1:
 572                         props->active_speed = IB_SPEED_FDR;
 573                         break;
 574                 case 2:
 575                         props->active_speed = IB_SPEED_EDR;
 576                         break;
 577                 }
 578         }
 579
 580         /* If reported active speed is QDR, check if is FDR-10 */
 581         if (props->active_speed == IB_SPEED_QDR) {
 582                 init_query_mad(in_mad);
 583                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 584                 in_mad->attr_mod = cpu_to_be32(port);
 585
 586                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 587                                    NULL, NULL, in_mad, out_mad);
 588                 if (err)
 589                         goto out;
 590
 591                 /* Checking LinkSpeedActive for FDR-10 */
 592                 if (out_mad->data[15] & 0x1)
 593                         props->active_speed = IB_SPEED_FDR10;
 594         }
 595
 596         /* Avoid wrong speed value returned by FW if the IB link is down. */
 597         if (props->state == IB_PORT_DOWN)
 598                  props->active_speed = IB_SPEED_SDR;
 599
 600 out:
 601         kfree(in_mad);
 602         kfree(out_mad);
 603         return err;
 604 }
 605
 606 static u8 state_to_phys_state(enum ib_port_state state)
 607 {
 608         return state == IB_PORT_ACTIVE ? 5 : 3;
 609 }
 610
 611 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 612                                struct ib_port_attr *props, int netw_view)
 613 {
 614
 615         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 616         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 617         struct net_device *ndev;
 618         enum ib_mtu tmp;
 619         struct mlx4_cmd_mailbox *mailbox;
 620         int err = 0;
 621         int is_bonded = mlx4_is_bonded(mdev->dev);
 622
 623         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 624         if (IS_ERR(mailbox))
 625                 return PTR_ERR(mailbox);
 626
 627         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 628                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 629                            MLX4_CMD_WRAPPED);
 630         if (err)
 631                 goto out;
 632
 633         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ?
 634                                                 IB_WIDTH_4X : IB_WIDTH_1X;
 635         props->active_speed     = IB_SPEED_QDR;
 636         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 637         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 638         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 639         props->pkey_tbl_len     = 1;
 640         props->max_mtu          = IB_MTU_4096;
 641         props->max_vl_num       = 2;
 642         props->state            = IB_PORT_DOWN;
 643         props->phys_state       = state_to_phys_state(props->state);
 644         props->active_mtu       = IB_MTU_256;
 645         spin_lock_bh(&iboe->lock);
 646         ndev = iboe->netdevs[port - 1];
 647         if (ndev && is_bonded) {
 648                 rcu_read_lock(); /* required to get upper dev */
 649                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 650                 rcu_read_unlock();
 651         }
 652         if (!ndev)
 653                 goto out_unlock;
 654
 655         tmp = iboe_get_mtu(ndev->mtu);
 656         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 657
 658         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 659                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 660         props->phys_state       = state_to_phys_state(props->state);
 661 out_unlock:
 662         spin_unlock_bh(&iboe->lock);
 663 out:
 664         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 665         return err;
 666 }
 667
 668 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 669                          struct ib_port_attr *props, int netw_view)
 670 {
 671         int err;
 672
 673         memset(props, 0, sizeof *props);
 674
 675         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 676                 ib_link_query_port(ibdev, port, props, netw_view) :
 677                                 eth_link_query_port(ibdev, port, props, netw_view);
 678
 679         return err;
 680 }
 681
 682 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 683                               struct ib_port_attr *props)
 684 {
 685         /* returns host view */
 686         return __mlx4_ib_query_port(ibdev, port, props, 0);
 687 }
 688
 689 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 690                         union ib_gid *gid, int netw_view)
 691 {
 692         struct ib_smp *in_mad  = NULL;
 693         struct ib_smp *out_mad = NULL;
 694         int err = -ENOMEM;
 695         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 696         int clear = 0;
 697         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 698
 699         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 700         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 701         if (!in_mad || !out_mad)
 702                 goto out;
 703
 704         init_query_mad(in_mad);
 705         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 706         in_mad->attr_mod = cpu_to_be32(port);
 707
 708         if (mlx4_is_mfunc(dev->dev) && netw_view)
 709                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 710
 711         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 712         if (err)
 713                 goto out;
 714
 715         memcpy(gid->raw, out_mad->data + 8, 8);
 716
 717         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 718                 if (index) {
 719                         /* For any index > 0, return the null guid */
 720                         err = 0;
 721                         clear = 1;
 722                         goto out;
 723                 }
 724         }
 725
 726         init_query_mad(in_mad);
 727         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 728         in_mad->attr_mod = cpu_to_be32(index / 8);
 729
 730         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 731                            NULL, NULL, in_mad, out_mad);
 732         if (err)
 733                 goto out;
 734
 735         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 736
 737 out:
 738         if (clear)
 739                 memset(gid->raw + 8, 0, 8);
 740         kfree(in_mad);
 741         kfree(out_mad);
 742         return err;
 743 }
 744
 745 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 746                              union ib_gid *gid)
 747 {
 748         int ret;
 749
 750         if (rdma_protocol_ib(ibdev, port))
 751                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 752
 753         if (!rdma_protocol_roce(ibdev, port))
 754                 return -ENODEV;
 755
 756         if (!rdma_cap_roce_gid_table(ibdev, port))
 757                 return -ENODEV;
 758
 759         ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
 760         if (ret == -EAGAIN) {
 761                 memcpy(gid, &zgid, sizeof(*gid));
 762                 return 0;
 763         }
 764
 765         return ret;
 766 }
 767
 768 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 769                          u16 *pkey, int netw_view)
 770 {
 771         struct ib_smp *in_mad  = NULL;
 772         struct ib_smp *out_mad = NULL;
 773         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 774         int err = -ENOMEM;
 775
 776         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 777         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 778         if (!in_mad || !out_mad)
 779                 goto out;
 780
 781         init_query_mad(in_mad);
 782         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 783         in_mad->attr_mod = cpu_to_be32(index / 32);
 784
 785         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 786                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 787
 788         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 789                            in_mad, out_mad);
 790         if (err)
 791                 goto out;
 792
 793         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 794
 795 out:
 796         kfree(in_mad);
 797         kfree(out_mad);
 798         return err;
 799 }
 800
 801 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 802 {
 803         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 804 }
 805
 806 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 807                                  struct ib_device_modify *props)
 808 {
 809         struct mlx4_cmd_mailbox *mailbox;
 810         unsigned long flags;
 811
 812         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 813                 return -EOPNOTSUPP;
 814
 815         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 816                 return 0;
 817
 818         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 819                 return -EOPNOTSUPP;
 820
 821         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 822         memcpy(ibdev->node_desc, props->node_desc, 64);
 823         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 824
 825         /*
 826          * If possible, pass node desc to FW, so it can generate
 827          * a 144 trap.  If cmd fails, just ignore.
 828          */
 829         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 830         if (IS_ERR(mailbox))
 831                 return 0;
 832
 833         memcpy(mailbox->buf, props->node_desc, 64);
 834         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 835                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 836
 837         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 838
 839         return 0;
 840 }
 841
 842 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 843                             u32 cap_mask)
 844 {
 845         struct mlx4_cmd_mailbox *mailbox;
 846         int err;
 847
 848         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 849         if (IS_ERR(mailbox))
 850                 return PTR_ERR(mailbox);
 851
 852         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 853                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 854                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 855         } else {
 856                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 857                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 858         }
 859
 860         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
 861                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 862                        MLX4_CMD_WRAPPED);
 863
 864         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 865         return err;
 866 }
 867
 868 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 869                                struct ib_port_modify *props)
 870 {
 871         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 872         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 873         struct ib_port_attr attr;
 874         u32 cap_mask;
 875         int err;
 876
 877         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
 878          * of whether port link layer is ETH or IB. For ETH ports, qkey
 879          * violations and port capabilities are not meaningful.
 880          */
 881         if (is_eth)
 882                 return 0;
 883
 884         mutex_lock(&mdev->cap_mask_mutex);
 885
 886         err = mlx4_ib_query_port(ibdev, port, &attr);
 887         if (err)
 888                 goto out;
 889
 890         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 891                 ~props->clr_port_cap_mask;
 892
 893         err = mlx4_ib_SET_PORT(mdev, port,
 894                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
 895                                cap_mask);
 896
 897 out:
 898         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 899         return err;
 900 }
 901
 902 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 903                                                   struct ib_udata *udata)
 904 {
 905         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 906         struct mlx4_ib_ucontext *context;
 907         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
 908         struct mlx4_ib_alloc_ucontext_resp resp;
 909         int err;
 910
 911         if (!dev->ib_active)
 912                 return ERR_PTR(-EAGAIN);
 913
 914         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
 915                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
 916                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
 917                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 918         } else {
 919                 resp.dev_caps         = dev->dev->caps.userspace_caps;
 920                 resp.qp_tab_size      = dev->dev->caps.num_qps;
 921                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 922                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 923                 resp.cqe_size         = dev->dev->caps.cqe_size;
 924         }
 925
 926         context = kzalloc(sizeof(*context), GFP_KERNEL);
 927         if (!context)
 928                 return ERR_PTR(-ENOMEM);
 929
 930         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 931         if (err) {
 932                 kfree(context);
 933                 return ERR_PTR(err);
 934         }
 935
 936         INIT_LIST_HEAD(&context->db_page_list);
 937         mutex_init(&context->db_page_mutex);
 938
 939         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
 940                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
 941         else
 942                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
 943
 944         if (err) {
 945                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 946                 kfree(context);
 947                 return ERR_PTR(-EFAULT);
 948         }
 949
 950         return &context->ibucontext;
 951 }
 952
 953 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 954 {
 955         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 956
 957         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 958         kfree(context);
 959
 960         return 0;
 961 }
 962
 963 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
 964 {
 965         /* vma_open is called when a new VMA is created on top of our VMA.
 966          * This is done through either mremap flow or split_vma (usually due
 967          * to mlock, madvise, munmap, etc.). We do not support a clone of the
 968          * vma, as this VMA is strongly hardware related. Therefore we set the
 969          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
 970          * calling us again and trying to do incorrect actions. We assume that
 971          * the original vma size is exactly a single page that there will be no
 972          * "splitting" operations on.
 973          */
 974         area->vm_ops = NULL;
 975 }
 976
 977 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
 978 {
 979         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
 980
 981         /* It's guaranteed that all VMAs opened on a FD are closed before the
 982          * file itself is closed, therefore no sync is needed with the regular
 983          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
 984          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
 985          * The close operation is usually called under mm->mmap_sem except when
 986          * process is exiting.  The exiting case is handled explicitly as part
 987          * of mlx4_ib_disassociate_ucontext.
 988          */
 989         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
 990                                 area->vm_private_data;
 991
 992         /* set the vma context pointer to null in the mlx4_ib driver's private
 993          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
 994          */
 995         mlx4_ib_vma_priv_data->vma = NULL;
 996 }
 997
 998 static const struct vm_operations_struct mlx4_ib_vm_ops = {
 999         .open = mlx4_ib_vma_open,
1000         .close = mlx4_ib_vma_close
1001 };
1002
1003 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1004 {
1005         int i;
1006         int ret = 0;
1007         struct vm_area_struct *vma;
1008         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1009         struct task_struct *owning_process  = NULL;
1010         struct mm_struct   *owning_mm       = NULL;
1011
1012         owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1013         if (!owning_process)
1014                 return;
1015
1016         owning_mm = get_task_mm(owning_process);
1017         if (!owning_mm) {
1018                 pr_info("no mm, disassociate ucontext is pending task termination\n");
1019                 while (1) {
1020                         /* make sure that task is dead before returning, it may
1021                          * prevent a rare case of module down in parallel to a
1022                          * call to mlx4_ib_vma_close.
1023                          */
1024                         put_task_struct(owning_process);
1025                         msleep(1);
1026                         owning_process = get_pid_task(ibcontext->tgid,
1027                                                       PIDTYPE_PID);
1028                         if (!owning_process ||
1029                             owning_process->state == TASK_DEAD) {
1030                                 pr_info("disassociate ucontext done, task was terminated\n");
1031                                 /* in case task was dead need to release the task struct */
1032                                 if (owning_process)
1033                                         put_task_struct(owning_process);
1034                                 return;
1035                         }
1036                 }
1037         }
1038
1039         /* need to protect from a race on closing the vma as part of
1040          * mlx4_ib_vma_close().
1041          */
1042         down_read(&owning_mm->mmap_sem);
1043         for (i = 0; i < HW_BAR_COUNT; i++) {
1044                 vma = context->hw_bar_info[i].vma;
1045                 if (!vma)
1046                         continue;
1047
1048                 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1049                                    context->hw_bar_info[i].vma->vm_start,
1050                                    PAGE_SIZE);
1051                 if (ret) {
1052                         pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1053                         BUG_ON(1);
1054                 }
1055
1056                 /* context going to be destroyed, should not access ops any more */
1057                 context->hw_bar_info[i].vma->vm_ops = NULL;
1058         }
1059
1060         up_read(&owning_mm->mmap_sem);
1061         mmput(owning_mm);
1062         put_task_struct(owning_process);
1063 }
1064
1065 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1066                                  struct mlx4_ib_vma_private_data *vma_private_data)
1067 {
1068         vma_private_data->vma = vma;
1069         vma->vm_private_data = vma_private_data;
1070         vma->vm_ops =  &mlx4_ib_vm_ops;
1071 }
1072
1073 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1074 {
1075         struct mlx4_ib_dev *dev = to_mdev(context->device);
1076         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1077
1078         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1079                 return -EINVAL;
1080
1081         if (vma->vm_pgoff == 0) {
1082                 /* We prevent double mmaping on same context */
1083                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1084                         return -EINVAL;
1085
1086                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1087
1088                 if (io_remap_pfn_range(vma, vma->vm_start,
1089                                        to_mucontext(context)->uar.pfn,
1090                                        PAGE_SIZE, vma->vm_page_prot))
1091                         return -EAGAIN;
1092
1093                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1094
1095         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1096                 /* We prevent double mmaping on same context */
1097                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1098                         return -EINVAL;
1099
1100                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1101
1102                 if (io_remap_pfn_range(vma, vma->vm_start,
1103                                        to_mucontext(context)->uar.pfn +
1104                                        dev->dev->caps.num_uars,
1105                                        PAGE_SIZE, vma->vm_page_prot))
1106                         return -EAGAIN;
1107
1108                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1109
1110         } else if (vma->vm_pgoff == 3) {
1111                 struct mlx4_clock_params params;
1112                 int ret;
1113
1114                 /* We prevent double mmaping on same context */
1115                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1116                         return -EINVAL;
1117
1118                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1119
1120                 if (ret)
1121                         return ret;
1122
1123                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1124                 if (io_remap_pfn_range(vma, vma->vm_start,
1125                                        (pci_resource_start(dev->dev->persist->pdev,
1126                                                            params.bar) +
1127                                         params.offset)
1128                                        >> PAGE_SHIFT,
1129                                        PAGE_SIZE, vma->vm_page_prot))
1130                         return -EAGAIN;
1131
1132                 mlx4_ib_set_vma_data(vma,
1133                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1134         } else {
1135                 return -EINVAL;
1136         }
1137
1138         return 0;
1139 }
1140
1141 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1142                                       struct ib_ucontext *context,
1143                                       struct ib_udata *udata)
1144 {
1145         struct mlx4_ib_pd *pd;
1146         int err;
1147
1148         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1149         if (!pd)
1150                 return ERR_PTR(-ENOMEM);
1151
1152         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1153         if (err) {
1154                 kfree(pd);
1155                 return ERR_PTR(err);
1156         }
1157
1158         if (context)
1159                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1160                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1161                         kfree(pd);
1162                         return ERR_PTR(-EFAULT);
1163                 }
1164
1165         return &pd->ibpd;
1166 }
1167
1168 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1169 {
1170         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1171         kfree(pd);
1172
1173         return 0;
1174 }
1175
1176 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1177                                           struct ib_ucontext *context,
1178                                           struct ib_udata *udata)
1179 {
1180         struct mlx4_ib_xrcd *xrcd;
1181         struct ib_cq_init_attr cq_attr = {};
1182         int err;
1183
1184         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1185                 return ERR_PTR(-ENOSYS);
1186
1187         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1188         if (!xrcd)
1189                 return ERR_PTR(-ENOMEM);
1190
1191         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1192         if (err)
1193                 goto err1;
1194
1195         xrcd->pd = ib_alloc_pd(ibdev);
1196         if (IS_ERR(xrcd->pd)) {
1197                 err = PTR_ERR(xrcd->pd);
1198                 goto err2;
1199         }
1200
1201         cq_attr.cqe = 1;
1202         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1203         if (IS_ERR(xrcd->cq)) {
1204                 err = PTR_ERR(xrcd->cq);
1205                 goto err3;
1206         }
1207
1208         return &xrcd->ibxrcd;
1209
1210 err3:
1211         ib_dealloc_pd(xrcd->pd);
1212 err2:
1213         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1214 err1:
1215         kfree(xrcd);
1216         return ERR_PTR(err);
1217 }
1218
1219 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1220 {
1221         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1222         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1223         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1224         kfree(xrcd);
1225
1226         return 0;
1227 }
1228
1229 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1230 {
1231         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1232         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1233         struct mlx4_ib_gid_entry *ge;
1234
1235         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1236         if (!ge)
1237                 return -ENOMEM;
1238
1239         ge->gid = *gid;
1240         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1241                 ge->port = mqp->port;
1242                 ge->added = 1;
1243         }
1244
1245         mutex_lock(&mqp->mutex);
1246         list_add_tail(&ge->list, &mqp->gid_list);
1247         mutex_unlock(&mqp->mutex);
1248
1249         return 0;
1250 }
1251
1252 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1253                                           struct mlx4_ib_counters *ctr_table)
1254 {
1255         struct counter_index *counter, *tmp_count;
1256
1257         mutex_lock(&ctr_table->mutex);
1258         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1259                                  list) {
1260                 if (counter->allocated)
1261                         mlx4_counter_free(ibdev->dev, counter->index);
1262                 list_del(&counter->list);
1263                 kfree(counter);
1264         }
1265         mutex_unlock(&ctr_table->mutex);
1266 }
1267
1268 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1269                    union ib_gid *gid)
1270 {
1271         struct net_device *ndev;
1272         int ret = 0;
1273
1274         if (!mqp->port)
1275                 return 0;
1276
1277         spin_lock_bh(&mdev->iboe.lock);
1278         ndev = mdev->iboe.netdevs[mqp->port - 1];
1279         if (ndev)
1280                 dev_hold(ndev);
1281         spin_unlock_bh(&mdev->iboe.lock);
1282
1283         if (ndev) {
1284                 ret = 1;
1285                 dev_put(ndev);
1286         }
1287
1288         return ret;
1289 }
1290
1291 struct mlx4_ib_steering {
1292         struct list_head list;
1293         struct mlx4_flow_reg_id reg_id;
1294         union ib_gid gid;
1295 };
1296
1297 static int parse_flow_attr(struct mlx4_dev *dev,
1298                            u32 qp_num,
1299                            union ib_flow_spec *ib_spec,
1300                            struct _rule_hw *mlx4_spec)
1301 {
1302         enum mlx4_net_trans_rule_id type;
1303
1304         switch (ib_spec->type) {
1305         case IB_FLOW_SPEC_ETH:
1306                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1307                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1308                        ETH_ALEN);
1309                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1310                        ETH_ALEN);
1311                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1312                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1313                 break;
1314         case IB_FLOW_SPEC_IB:
1315                 type = MLX4_NET_TRANS_RULE_ID_IB;
1316                 mlx4_spec->ib.l3_qpn =
1317                         cpu_to_be32(qp_num);
1318                 mlx4_spec->ib.qpn_mask =
1319                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1320                 break;
1321
1322
1323         case IB_FLOW_SPEC_IPV4:
1324                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1325                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1326                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1327                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1328                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1329                 break;
1330
1331         case IB_FLOW_SPEC_TCP:
1332         case IB_FLOW_SPEC_UDP:
1333                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1334                                         MLX4_NET_TRANS_RULE_ID_TCP :
1335                                         MLX4_NET_TRANS_RULE_ID_UDP;
1336                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1337                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1338                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1339                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1340                 break;
1341
1342         default:
1343                 return -EINVAL;
1344         }
1345         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1346             mlx4_hw_rule_sz(dev, type) < 0)
1347                 return -EINVAL;
1348         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1349         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1350         return mlx4_hw_rule_sz(dev, type);
1351 }
1352
1353 struct default_rules {
1354         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1355         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1356         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1357         __u8  link_layer;
1358 };
1359 static const struct default_rules default_table[] = {
1360         {
1361                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1362                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1363                 .rules_create_list = {IB_FLOW_SPEC_IB},
1364                 .link_layer = IB_LINK_LAYER_INFINIBAND
1365         }
1366 };
1367
1368 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1369                                          struct ib_flow_attr *flow_attr)
1370 {
1371         int i, j, k;
1372         void *ib_flow;
1373         const struct default_rules *pdefault_rules = default_table;
1374         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1375
1376         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1377                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1378                 memset(&field_types, 0, sizeof(field_types));
1379
1380                 if (link_layer != pdefault_rules->link_layer)
1381                         continue;
1382
1383                 ib_flow = flow_attr + 1;
1384                 /* we assume the specs are sorted */
1385                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1386                      j < flow_attr->num_of_specs; k++) {
1387                         union ib_flow_spec *current_flow =
1388                                 (union ib_flow_spec *)ib_flow;
1389
1390                         /* same layer but different type */
1391                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1392                              (pdefault_rules->mandatory_fields[k] &
1393                               IB_FLOW_SPEC_LAYER_MASK)) &&
1394                             (current_flow->type !=
1395                              pdefault_rules->mandatory_fields[k]))
1396                                 goto out;
1397
1398                         /* same layer, try match next one */
1399                         if (current_flow->type ==
1400                             pdefault_rules->mandatory_fields[k]) {
1401                                 j++;
1402                                 ib_flow +=
1403                                         ((union ib_flow_spec *)ib_flow)->size;
1404                         }
1405                 }
1406
1407                 ib_flow = flow_attr + 1;
1408                 for (j = 0; j < flow_attr->num_of_specs;
1409                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1410                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1411                                 /* same layer and same type */
1412                                 if (((union ib_flow_spec *)ib_flow)->type ==
1413                                     pdefault_rules->mandatory_not_fields[k])
1414                                         goto out;
1415
1416                 return i;
1417         }
1418 out:
1419         return -1;
1420 }
1421
1422 static int __mlx4_ib_create_default_rules(
1423                 struct mlx4_ib_dev *mdev,
1424                 struct ib_qp *qp,
1425                 const struct default_rules *pdefault_rules,
1426                 struct _rule_hw *mlx4_spec) {
1427         int size = 0;
1428         int i;
1429
1430         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1431                 int ret;
1432                 union ib_flow_spec ib_spec;
1433                 switch (pdefault_rules->rules_create_list[i]) {
1434                 case 0:
1435                         /* no rule */
1436                         continue;
1437                 case IB_FLOW_SPEC_IB:
1438                         ib_spec.type = IB_FLOW_SPEC_IB;
1439                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1440
1441                         break;
1442                 default:
1443                         /* invalid rule */
1444                         return -EINVAL;
1445                 }
1446                 /* We must put empty rule, qpn is being ignored */
1447                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1448                                       mlx4_spec);
1449                 if (ret < 0) {
1450                         pr_info("invalid parsing\n");
1451                         return -EINVAL;
1452                 }
1453
1454                 mlx4_spec = (void *)mlx4_spec + ret;
1455                 size += ret;
1456         }
1457         return size;
1458 }
1459
1460 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1461                           int domain,
1462                           enum mlx4_net_trans_promisc_mode flow_type,
1463                           u64 *reg_id)
1464 {
1465         int ret, i;
1466         int size = 0;
1467         void *ib_flow;
1468         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1469         struct mlx4_cmd_mailbox *mailbox;
1470         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1471         int default_flow;
1472
1473         static const u16 __mlx4_domain[] = {
1474                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1475                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1476                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1477                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1478         };
1479
1480         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1481                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1482                 return -EINVAL;
1483         }
1484
1485         if (domain >= IB_FLOW_DOMAIN_NUM) {
1486                 pr_err("Invalid domain value %d\n", domain);
1487                 return -EINVAL;
1488         }
1489
1490         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1491                 return -EINVAL;
1492
1493         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1494         if (IS_ERR(mailbox))
1495                 return PTR_ERR(mailbox);
1496         ctrl = mailbox->buf;
1497
1498         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1499                                  flow_attr->priority);
1500         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1501         ctrl->port = flow_attr->port;
1502         ctrl->qpn = cpu_to_be32(qp->qp_num);
1503
1504         ib_flow = flow_attr + 1;
1505         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1506         /* Add default flows */
1507         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1508         if (default_flow >= 0) {
1509                 ret = __mlx4_ib_create_default_rules(
1510                                 mdev, qp, default_table + default_flow,
1511                                 mailbox->buf + size);
1512                 if (ret < 0) {
1513                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1514                         return -EINVAL;
1515                 }
1516                 size += ret;
1517         }
1518         for (i = 0; i < flow_attr->num_of_specs; i++) {
1519                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1520                                       mailbox->buf + size);
1521                 if (ret < 0) {
1522                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1523                         return -EINVAL;
1524                 }
1525                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1526                 size += ret;
1527         }
1528
1529         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1530                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1531                            MLX4_CMD_WRAPPED);
1532         if (ret == -ENOMEM)
1533                 pr_err("mcg table is full. Fail to register network rule.\n");
1534         else if (ret == -ENXIO)
1535                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1536         else if (ret)
1537                 pr_err("Invalid argumant. Fail to register network rule.\n");
1538
1539         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1540         return ret;
1541 }
1542
1543 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1544 {
1545         int err;
1546         err = mlx4_cmd(dev, reg_id, 0, 0,
1547                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1548                        MLX4_CMD_WRAPPED);
1549         if (err)
1550                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1551                        reg_id);
1552         return err;
1553 }
1554
1555 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1556                                     u64 *reg_id)
1557 {
1558         void *ib_flow;
1559         union ib_flow_spec *ib_spec;
1560         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1561         int err = 0;
1562
1563         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1564             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1565                 return 0; /* do nothing */
1566
1567         ib_flow = flow_attr + 1;
1568         ib_spec = (union ib_flow_spec *)ib_flow;
1569
1570         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1571                 return 0; /* do nothing */
1572
1573         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1574                                     flow_attr->port, qp->qp_num,
1575                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1576                                     reg_id);
1577         return err;
1578 }
1579
1580 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1581                                     struct ib_flow_attr *flow_attr,
1582                                     int domain)
1583 {
1584         int err = 0, i = 0, j = 0;
1585         struct mlx4_ib_flow *mflow;
1586         enum mlx4_net_trans_promisc_mode type[2];
1587         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1588         int is_bonded = mlx4_is_bonded(dev);
1589
1590         memset(type, 0, sizeof(type));
1591
1592         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1593         if (!mflow) {
1594                 err = -ENOMEM;
1595                 goto err_free;
1596         }
1597
1598         switch (flow_attr->type) {
1599         case IB_FLOW_ATTR_NORMAL:
1600                 type[0] = MLX4_FS_REGULAR;
1601                 break;
1602
1603         case IB_FLOW_ATTR_ALL_DEFAULT:
1604                 type[0] = MLX4_FS_ALL_DEFAULT;
1605                 break;
1606
1607         case IB_FLOW_ATTR_MC_DEFAULT:
1608                 type[0] = MLX4_FS_MC_DEFAULT;
1609                 break;
1610
1611         case IB_FLOW_ATTR_SNIFFER:
1612                 type[0] = MLX4_FS_UC_SNIFFER;
1613                 type[1] = MLX4_FS_MC_SNIFFER;
1614                 break;
1615
1616         default:
1617                 err = -EINVAL;
1618                 goto err_free;
1619         }
1620
1621         while (i < ARRAY_SIZE(type) && type[i]) {
1622                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1623                                             &mflow->reg_id[i].id);
1624                 if (err)
1625                         goto err_create_flow;
1626                 if (is_bonded) {
1627                         /* Application always sees one port so the mirror rule
1628                          * must be on port #2
1629                          */
1630                         flow_attr->port = 2;
1631                         err = __mlx4_ib_create_flow(qp, flow_attr,
1632                                                     domain, type[j],
1633                                                     &mflow->reg_id[j].mirror);
1634                         flow_attr->port = 1;
1635                         if (err)
1636                                 goto err_create_flow;
1637                         j++;
1638                 }
1639
1640                 i++;
1641         }
1642
1643         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1644                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1645                                                &mflow->reg_id[i].id);
1646                 if (err)
1647                         goto err_create_flow;
1648
1649                 if (is_bonded) {
1650                         flow_attr->port = 2;
1651                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1652                                                        &mflow->reg_id[j].mirror);
1653                         flow_attr->port = 1;
1654                         if (err)
1655                                 goto err_create_flow;
1656                         j++;
1657                 }
1658                 /* function to create mirror rule */
1659                 i++;
1660         }
1661
1662         return &mflow->ibflow;
1663
1664 err_create_flow:
1665         while (i) {
1666                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1667                                              mflow->reg_id[i].id);
1668                 i--;
1669         }
1670
1671         while (j) {
1672                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1673                                              mflow->reg_id[j].mirror);
1674                 j--;
1675         }
1676 err_free:
1677         kfree(mflow);
1678         return ERR_PTR(err);
1679 }
1680
1681 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1682 {
1683         int err, ret = 0;
1684         int i = 0;
1685         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1686         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1687
1688         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1689                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1690                 if (err)
1691                         ret = err;
1692                 if (mflow->reg_id[i].mirror) {
1693                         err = __mlx4_ib_destroy_flow(mdev->dev,
1694                                                      mflow->reg_id[i].mirror);
1695                         if (err)
1696                                 ret = err;
1697                 }
1698                 i++;
1699         }
1700
1701         kfree(mflow);
1702         return ret;
1703 }
1704
1705 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1706 {
1707         int err;
1708         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1709         struct mlx4_dev *dev = mdev->dev;
1710         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1711         struct mlx4_ib_steering *ib_steering = NULL;
1712         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1713         struct mlx4_flow_reg_id reg_id;
1714
1715         if (mdev->dev->caps.steering_mode ==
1716             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1717                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1718                 if (!ib_steering)
1719                         return -ENOMEM;
1720         }
1721
1722         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1723                                     !!(mqp->flags &
1724                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1725                                     prot, &reg_id.id);
1726         if (err) {
1727                 pr_err("multicast attach op failed, err %d\n", err);
1728                 goto err_malloc;
1729         }
1730
1731         reg_id.mirror = 0;
1732         if (mlx4_is_bonded(dev)) {
1733                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1734                                             (mqp->port == 1) ? 2 : 1,
1735                                             !!(mqp->flags &
1736                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1737                                             prot, &reg_id.mirror);
1738                 if (err)
1739                         goto err_add;
1740         }
1741
1742         err = add_gid_entry(ibqp, gid);
1743         if (err)
1744                 goto err_add;
1745
1746         if (ib_steering) {
1747                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1748                 ib_steering->reg_id = reg_id;
1749                 mutex_lock(&mqp->mutex);
1750                 list_add(&ib_steering->list, &mqp->steering_rules);
1751                 mutex_unlock(&mqp->mutex);
1752         }
1753         return 0;
1754
1755 err_add:
1756         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1757                               prot, reg_id.id);
1758         if (reg_id.mirror)
1759                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1760                                       prot, reg_id.mirror);
1761 err_malloc:
1762         kfree(ib_steering);
1763
1764         return err;
1765 }
1766
1767 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1768 {
1769         struct mlx4_ib_gid_entry *ge;
1770         struct mlx4_ib_gid_entry *tmp;
1771         struct mlx4_ib_gid_entry *ret = NULL;
1772
1773         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1774                 if (!memcmp(raw, ge->gid.raw, 16)) {
1775                         ret = ge;
1776                         break;
1777                 }
1778         }
1779
1780         return ret;
1781 }
1782
1783 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1784 {
1785         int err;
1786         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1787         struct mlx4_dev *dev = mdev->dev;
1788         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1789         struct net_device *ndev;
1790         struct mlx4_ib_gid_entry *ge;
1791         struct mlx4_flow_reg_id reg_id = {0, 0};
1792         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1793
1794         if (mdev->dev->caps.steering_mode ==
1795             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1796                 struct mlx4_ib_steering *ib_steering;
1797
1798                 mutex_lock(&mqp->mutex);
1799                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1800                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1801                                 list_del(&ib_steering->list);
1802                                 break;
1803                         }
1804                 }
1805                 mutex_unlock(&mqp->mutex);
1806                 if (&ib_steering->list == &mqp->steering_rules) {
1807                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1808                         return -EINVAL;
1809                 }
1810                 reg_id = ib_steering->reg_id;
1811                 kfree(ib_steering);
1812         }
1813
1814         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1815                                     prot, reg_id.id);
1816         if (err)
1817                 return err;
1818
1819         if (mlx4_is_bonded(dev)) {
1820                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1821                                             prot, reg_id.mirror);
1822                 if (err)
1823                         return err;
1824         }
1825
1826         mutex_lock(&mqp->mutex);
1827         ge = find_gid_entry(mqp, gid->raw);
1828         if (ge) {
1829                 spin_lock_bh(&mdev->iboe.lock);
1830                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1831                 if (ndev)
1832                         dev_hold(ndev);
1833                 spin_unlock_bh(&mdev->iboe.lock);
1834                 if (ndev)
1835                         dev_put(ndev);
1836                 list_del(&ge->list);
1837                 kfree(ge);
1838         } else
1839                 pr_warn("could not find mgid entry\n");
1840
1841         mutex_unlock(&mqp->mutex);
1842
1843         return 0;
1844 }
1845
1846 static int init_node_data(struct mlx4_ib_dev *dev)
1847 {
1848         struct ib_smp *in_mad  = NULL;
1849         struct ib_smp *out_mad = NULL;
1850         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1851         int err = -ENOMEM;
1852
1853         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1854         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1855         if (!in_mad || !out_mad)
1856                 goto out;
1857
1858         init_query_mad(in_mad);
1859         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1860         if (mlx4_is_master(dev->dev))
1861                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1862
1863         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1864         if (err)
1865                 goto out;
1866
1867         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1868
1869         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1870
1871         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1872         if (err)
1873                 goto out;
1874
1875         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1876         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1877
1878 out:
1879         kfree(in_mad);
1880         kfree(out_mad);
1881         return err;
1882 }
1883
1884 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1885                         char *buf)
1886 {
1887         struct mlx4_ib_dev *dev =
1888                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1889         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
1890 }
1891
1892 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1893                            char *buf)
1894 {
1895         struct mlx4_ib_dev *dev =
1896                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1897         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
1898                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
1899                        (int) dev->dev->caps.fw_ver & 0xffff);
1900 }
1901
1902 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1903                         char *buf)
1904 {
1905         struct mlx4_ib_dev *dev =
1906                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1907         return sprintf(buf, "%x\n", dev->dev->rev_id);
1908 }
1909
1910 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1911                           char *buf)
1912 {
1913         struct mlx4_ib_dev *dev =
1914                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1915         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
1916                        dev->dev->board_id);
1917 }
1918
1919 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1920 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1921 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1922 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1923
1924 static struct device_attribute *mlx4_class_attributes[] = {
1925         &dev_attr_hw_rev,
1926         &dev_attr_fw_ver,
1927         &dev_attr_hca_type,
1928         &dev_attr_board_id
1929 };
1930
1931 #define MLX4_IB_INVALID_MAC     ((u64)-1)
1932 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
1933                                struct net_device *dev,
1934                                int port)
1935 {
1936         u64 new_smac = 0;
1937         u64 release_mac = MLX4_IB_INVALID_MAC;
1938         struct mlx4_ib_qp *qp;
1939
1940         read_lock(&dev_base_lock);
1941         new_smac = mlx4_mac_to_u64(dev->dev_addr);
1942         read_unlock(&dev_base_lock);
1943
1944         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
1945
1946         /* no need for update QP1 and mac registration in non-SRIOV */
1947         if (!mlx4_is_mfunc(ibdev->dev))
1948                 return;
1949
1950         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
1951         qp = ibdev->qp1_proxy[port - 1];
1952         if (qp) {
1953                 int new_smac_index;
1954                 u64 old_smac;
1955                 struct mlx4_update_qp_params update_params;
1956
1957                 mutex_lock(&qp->mutex);
1958                 old_smac = qp->pri.smac;
1959                 if (new_smac == old_smac)
1960                         goto unlock;
1961
1962                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
1963
1964                 if (new_smac_index < 0)
1965                         goto unlock;
1966
1967                 update_params.smac_index = new_smac_index;
1968                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
1969                                    &update_params)) {
1970                         release_mac = new_smac;
1971                         goto unlock;
1972                 }
1973                 /* if old port was zero, no mac was yet registered for this QP */
1974                 if (qp->pri.smac_port)
1975                         release_mac = old_smac;
1976                 qp->pri.smac = new_smac;
1977                 qp->pri.smac_port = port;
1978                 qp->pri.smac_index = new_smac_index;
1979         }
1980
1981 unlock:
1982         if (release_mac != MLX4_IB_INVALID_MAC)
1983                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
1984         if (qp)
1985                 mutex_unlock(&qp->mutex);
1986         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
1987 }
1988
1989 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
1990                                  struct net_device *dev,
1991                                  unsigned long event)
1992
1993 {
1994         struct mlx4_ib_iboe *iboe;
1995         int update_qps_port = -1;
1996         int port;
1997
1998         ASSERT_RTNL();
1999
2000         iboe = &ibdev->iboe;
2001
2002         spin_lock_bh(&iboe->lock);
2003         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2004
2005                 iboe->netdevs[port - 1] =
2006                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2007
2008                 if (dev == iboe->netdevs[port - 1] &&
2009                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2010                      event == NETDEV_UP || event == NETDEV_CHANGE))
2011                         update_qps_port = port;
2012
2013         }
2014         spin_unlock_bh(&iboe->lock);
2015
2016         if (update_qps_port > 0)
2017                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2018 }
2019
2020 static int mlx4_ib_netdev_event(struct notifier_block *this,
2021                                 unsigned long event, void *ptr)
2022 {
2023         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2024         struct mlx4_ib_dev *ibdev;
2025
2026         if (!net_eq(dev_net(dev), &init_net))
2027                 return NOTIFY_DONE;
2028
2029         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2030         mlx4_ib_scan_netdevs(ibdev, dev, event);
2031
2032         return NOTIFY_DONE;
2033 }
2034
2035 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2036 {
2037         int port;
2038         int slave;
2039         int i;
2040
2041         if (mlx4_is_master(ibdev->dev)) {
2042                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2043                      ++slave) {
2044                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2045                                 for (i = 0;
2046                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2047                                      ++i) {
2048                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2049                                         /* master has the identity virt2phys pkey mapping */
2050                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2051                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2052                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2053                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2054                                 }
2055                         }
2056                 }
2057                 /* initialize pkey cache */
2058                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2059                         for (i = 0;
2060                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2061                              ++i)
2062                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2063                                         (i) ? 0 : 0xFFFF;
2064                 }
2065         }
2066 }
2067
2068 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2069 {
2070         int i, j, eq = 0, total_eqs = 0;
2071
2072         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2073                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2074         if (!ibdev->eq_table)
2075                 return;
2076
2077         for (i = 1; i <= dev->caps.num_ports; i++) {
2078                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2079                      j++, total_eqs++) {
2080                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2081                                 continue;
2082                         ibdev->eq_table[eq] = total_eqs;
2083                         if (!mlx4_assign_eq(dev, i,
2084                                             &ibdev->eq_table[eq]))
2085                                 eq++;
2086                         else
2087                                 ibdev->eq_table[eq] = -1;
2088                 }
2089         }
2090
2091         for (i = eq; i < dev->caps.num_comp_vectors;
2092              ibdev->eq_table[i++] = -1)
2093                 ;
2094
2095         /* Advertise the new number of EQs to clients */
2096         ibdev->ib_dev.num_comp_vectors = eq;
2097 }
2098
2099 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2100 {
2101         int i;
2102         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2103
2104         /* no eqs were allocated */
2105         if (!ibdev->eq_table)
2106                 return;
2107
2108         /* Reset the advertised EQ number */
2109         ibdev->ib_dev.num_comp_vectors = 0;
2110
2111         for (i = 0; i < total_eqs; i++)
2112                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2113
2114         kfree(ibdev->eq_table);
2115         ibdev->eq_table = NULL;
2116 }
2117
2118 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2119                                struct ib_port_immutable *immutable)
2120 {
2121         struct ib_port_attr attr;
2122         int err;
2123
2124         err = mlx4_ib_query_port(ibdev, port_num, &attr);
2125         if (err)
2126                 return err;
2127
2128         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2129         immutable->gid_tbl_len = attr.gid_tbl_len;
2130
2131         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND)
2132                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2133         else
2134                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2135
2136         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2137
2138         return 0;
2139 }
2140
2141 static void *mlx4_ib_add(struct mlx4_dev *dev)
2142 {
2143         struct mlx4_ib_dev *ibdev;
2144         int num_ports = 0;
2145         int i, j;
2146         int err;
2147         struct mlx4_ib_iboe *iboe;
2148         int ib_num_ports = 0;
2149         int num_req_counters;
2150         int allocated;
2151         u32 counter_index;
2152         struct counter_index *new_counter_index = NULL;
2153
2154         pr_info_once("%s", mlx4_ib_version);
2155
2156         num_ports = 0;
2157         mlx4_foreach_ib_transport_port(i, dev)
2158                 num_ports++;
2159
2160         /* No point in registering a device with no ports... */
2161         if (num_ports == 0)
2162                 return NULL;
2163
2164         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2165         if (!ibdev) {
2166                 dev_err(&dev->persist->pdev->dev,
2167                         "Device struct alloc failed\n");
2168                 return NULL;
2169         }
2170
2171         iboe = &ibdev->iboe;
2172
2173         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2174                 goto err_dealloc;
2175
2176         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2177                 goto err_pd;
2178
2179         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2180                                  PAGE_SIZE);
2181         if (!ibdev->uar_map)
2182                 goto err_uar;
2183         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2184
2185         ibdev->dev = dev;
2186         ibdev->bond_next_port   = 0;
2187
2188         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2189         ibdev->ib_dev.owner             = THIS_MODULE;
2190         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2191         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2192         ibdev->num_ports                = num_ports;
2193         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2194                                                 1 : ibdev->num_ports;
2195         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2196         ibdev->ib_dev.dma_device        = &dev->persist->pdev->dev;
2197         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2198         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2199         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2200
2201         if (dev->caps.userspace_caps)
2202                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2203         else
2204                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2205
2206         ibdev->ib_dev.uverbs_cmd_mask   =
2207                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2208                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2209                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2210                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2211                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2212                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2213                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2214                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2215                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2216                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2217                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2218                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2219                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2220                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2221                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2222                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2223                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2224                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2225                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2226                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2227                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2228                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2229                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2230                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2231
2232         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2233         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2234         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2235         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2236         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2237         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2238         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2239         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2240         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2241         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2242         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2243         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2244         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2245         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2246         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2247         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2248         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2249         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2250         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2251         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2252         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2253         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2254         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2255         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2256         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2257         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2258         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2259         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2260         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2261         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2262         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2263         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2264         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2265         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2266         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2267         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2268         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2269         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2270         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2271         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2272         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2273         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2274         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2275
2276         if (!mlx4_is_slave(ibdev->dev)) {
2277                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2278                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2279                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2280                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2281         }
2282
2283         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2284             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2285                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2286                 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
2287                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2288
2289                 ibdev->ib_dev.uverbs_cmd_mask |=
2290                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2291                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2292         }
2293
2294         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2295                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2296                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2297                 ibdev->ib_dev.uverbs_cmd_mask |=
2298                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2299                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2300         }
2301
2302         if (check_flow_steering_support(dev)) {
2303                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2304                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2305                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2306
2307                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2308                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2309                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2310         }
2311
2312         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2313                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2314                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2315                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2316
2317         mlx4_ib_alloc_eqs(dev, ibdev);
2318
2319         spin_lock_init(&iboe->lock);
2320
2321         if (init_node_data(ibdev))
2322                 goto err_map;
2323
2324         for (i = 0; i < ibdev->num_ports; ++i) {
2325                 mutex_init(&ibdev->counters_table[i].mutex);
2326                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2327         }
2328
2329         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2330         for (i = 0; i < num_req_counters; ++i) {
2331                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2332                 allocated = 0;
2333                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2334                                                 IB_LINK_LAYER_ETHERNET) {
2335                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2336                         /* if failed to allocate a new counter, use default */
2337                         if (err)
2338                                 counter_index =
2339                                         mlx4_get_default_counter_index(dev,
2340                                                                        i + 1);
2341                         else
2342                                 allocated = 1;
2343                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2344                         counter_index = mlx4_get_default_counter_index(dev,
2345                                                                        i + 1);
2346                 }
2347                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2348                                             GFP_KERNEL);
2349                 if (!new_counter_index) {
2350                         if (allocated)
2351                                 mlx4_counter_free(ibdev->dev, counter_index);
2352                         goto err_counter;
2353                 }
2354                 new_counter_index->index = counter_index;
2355                 new_counter_index->allocated = allocated;
2356                 list_add_tail(&new_counter_index->list,
2357                               &ibdev->counters_table[i].counters_list);
2358                 ibdev->counters_table[i].default_counter = counter_index;
2359                 pr_info("counter index %d for port %d allocated %d\n",
2360                         counter_index, i + 1, allocated);
2361         }
2362         if (mlx4_is_bonded(dev))
2363                 for (i = 1; i < ibdev->num_ports ; ++i) {
2364                         new_counter_index =
2365                                         kmalloc(sizeof(struct counter_index),
2366                                                 GFP_KERNEL);
2367                         if (!new_counter_index)
2368                                 goto err_counter;
2369                         new_counter_index->index = counter_index;
2370                         new_counter_index->allocated = 0;
2371                         list_add_tail(&new_counter_index->list,
2372                                       &ibdev->counters_table[i].counters_list);
2373                         ibdev->counters_table[i].default_counter =
2374                                                                 counter_index;
2375                 }
2376
2377         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2378                 ib_num_ports++;
2379
2380         spin_lock_init(&ibdev->sm_lock);
2381         mutex_init(&ibdev->cap_mask_mutex);
2382         INIT_LIST_HEAD(&ibdev->qp_list);
2383         spin_lock_init(&ibdev->reset_flow_resource_lock);
2384
2385         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2386             ib_num_ports) {
2387                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2388                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2389                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2390                                             &ibdev->steer_qpn_base, 0);
2391                 if (err)
2392                         goto err_counter;
2393
2394                 ibdev->ib_uc_qpns_bitmap =
2395                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2396                                 sizeof(long),
2397                                 GFP_KERNEL);
2398                 if (!ibdev->ib_uc_qpns_bitmap) {
2399                         dev_err(&dev->persist->pdev->dev,
2400                                 "bit map alloc failed\n");
2401                         goto err_steer_qp_release;
2402                 }
2403
2404                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2405
2406                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2407                                 dev, ibdev->steer_qpn_base,
2408                                 ibdev->steer_qpn_base +
2409                                 ibdev->steer_qpn_count - 1);
2410                 if (err)
2411                         goto err_steer_free_bitmap;
2412         }
2413
2414         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2415                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2416
2417         if (ib_register_device(&ibdev->ib_dev, NULL))
2418                 goto err_steer_free_bitmap;
2419
2420         if (mlx4_ib_mad_init(ibdev))
2421                 goto err_reg;
2422
2423         if (mlx4_ib_init_sriov(ibdev))
2424                 goto err_mad;
2425
2426         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) {
2427                 if (!iboe->nb.notifier_call) {
2428                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2429                         err = register_netdevice_notifier(&iboe->nb);
2430                         if (err) {
2431                                 iboe->nb.notifier_call = NULL;
2432                                 goto err_notif;
2433                         }
2434                 }
2435         }
2436
2437         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2438                 if (device_create_file(&ibdev->ib_dev.dev,
2439                                        mlx4_class_attributes[j]))
2440                         goto err_notif;
2441         }
2442
2443         ibdev->ib_active = true;
2444
2445         if (mlx4_is_mfunc(ibdev->dev))
2446                 init_pkeys(ibdev);
2447
2448         /* create paravirt contexts for any VFs which are active */
2449         if (mlx4_is_master(ibdev->dev)) {
2450                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2451                         if (j == mlx4_master_func_num(ibdev->dev))
2452                                 continue;
2453                         if (mlx4_is_slave_active(ibdev->dev, j))
2454                                 do_slave_init(ibdev, j, 1);
2455                 }
2456         }
2457         return ibdev;
2458
2459 err_notif:
2460         if (ibdev->iboe.nb.notifier_call) {
2461                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2462                         pr_warn("failure unregistering notifier\n");
2463                 ibdev->iboe.nb.notifier_call = NULL;
2464         }
2465         flush_workqueue(wq);
2466
2467         mlx4_ib_close_sriov(ibdev);
2468
2469 err_mad:
2470         mlx4_ib_mad_cleanup(ibdev);
2471
2472 err_reg:
2473         ib_unregister_device(&ibdev->ib_dev);
2474
2475 err_steer_free_bitmap:
2476         kfree(ibdev->ib_uc_qpns_bitmap);
2477
2478 err_steer_qp_release:
2479         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2480                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2481                                       ibdev->steer_qpn_count);
2482 err_counter:
2483         for (i = 0; i < ibdev->num_ports; ++i)
2484                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2485
2486 err_map:
2487         iounmap(ibdev->uar_map);
2488
2489 err_uar:
2490         mlx4_uar_free(dev, &ibdev->priv_uar);
2491
2492 err_pd:
2493         mlx4_pd_free(dev, ibdev->priv_pdn);
2494
2495 err_dealloc:
2496         ib_dealloc_device(&ibdev->ib_dev);
2497
2498         return NULL;
2499 }
2500
2501 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2502 {
2503         int offset;
2504
2505         WARN_ON(!dev->ib_uc_qpns_bitmap);
2506
2507         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2508                                          dev->steer_qpn_count,
2509                                          get_count_order(count));
2510         if (offset < 0)
2511                 return offset;
2512
2513         *qpn = dev->steer_qpn_base + offset;
2514         return 0;
2515 }
2516
2517 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2518 {
2519         if (!qpn ||
2520             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2521                 return;
2522
2523         BUG_ON(qpn < dev->steer_qpn_base);
2524
2525         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2526                               qpn - dev->steer_qpn_base,
2527                               get_count_order(count));
2528 }
2529
2530 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2531                          int is_attach)
2532 {
2533         int err;
2534         size_t flow_size;
2535         struct ib_flow_attr *flow = NULL;
2536         struct ib_flow_spec_ib *ib_spec;
2537
2538         if (is_attach) {
2539                 flow_size = sizeof(struct ib_flow_attr) +
2540                             sizeof(struct ib_flow_spec_ib);
2541                 flow = kzalloc(flow_size, GFP_KERNEL);
2542                 if (!flow)
2543                         return -ENOMEM;
2544                 flow->port = mqp->port;
2545                 flow->num_of_specs = 1;
2546                 flow->size = flow_size;
2547                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2548                 ib_spec->type = IB_FLOW_SPEC_IB;
2549                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2550                 /* Add an empty rule for IB L2 */
2551                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2552
2553                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2554                                             IB_FLOW_DOMAIN_NIC,
2555                                             MLX4_FS_REGULAR,
2556                                             &mqp->reg_id);
2557         } else {
2558                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2559         }
2560         kfree(flow);
2561         return err;
2562 }
2563
2564 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2565 {
2566         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2567         int p;
2568
2569         ibdev->ib_active = false;
2570         flush_workqueue(wq);
2571
2572         mlx4_ib_close_sriov(ibdev);
2573         mlx4_ib_mad_cleanup(ibdev);
2574         ib_unregister_device(&ibdev->ib_dev);
2575         if (ibdev->iboe.nb.notifier_call) {
2576                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2577                         pr_warn("failure unregistering notifier\n");
2578                 ibdev->iboe.nb.notifier_call = NULL;
2579         }
2580
2581         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2582                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2583                                       ibdev->steer_qpn_count);
2584                 kfree(ibdev->ib_uc_qpns_bitmap);
2585         }
2586
2587         iounmap(ibdev->uar_map);
2588         for (p = 0; p < ibdev->num_ports; ++p)
2589                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
2590
2591         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2592                 mlx4_CLOSE_PORT(dev, p);
2593
2594         mlx4_ib_free_eqs(dev, ibdev);
2595
2596         mlx4_uar_free(dev, &ibdev->priv_uar);
2597         mlx4_pd_free(dev, ibdev->priv_pdn);
2598         ib_dealloc_device(&ibdev->ib_dev);
2599 }
2600
2601 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2602 {
2603         struct mlx4_ib_demux_work **dm = NULL;
2604         struct mlx4_dev *dev = ibdev->dev;
2605         int i;
2606         unsigned long flags;
2607         struct mlx4_active_ports actv_ports;
2608         unsigned int ports;
2609         unsigned int first_port;
2610
2611         if (!mlx4_is_master(dev))
2612                 return;
2613
2614         actv_ports = mlx4_get_active_ports(dev, slave);
2615         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2616         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2617
2618         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
2619         if (!dm) {
2620                 pr_err("failed to allocate memory for tunneling qp update\n");
2621                 return;
2622         }
2623
2624         for (i = 0; i < ports; i++) {
2625                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
2626                 if (!dm[i]) {
2627                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
2628                         while (--i >= 0)
2629                                 kfree(dm[i]);
2630                         goto out;
2631                 }
2632                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
2633                 dm[i]->port = first_port + i + 1;
2634                 dm[i]->slave = slave;
2635                 dm[i]->do_init = do_init;
2636                 dm[i]->dev = ibdev;
2637         }
2638         /* initialize or tear down tunnel QPs for the slave */
2639         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
2640         if (!ibdev->sriov.is_going_down) {
2641                 for (i = 0; i < ports; i++)
2642                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
2643                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2644         } else {
2645                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2646                 for (i = 0; i < ports; i++)
2647                         kfree(dm[i]);
2648         }
2649 out:
2650         kfree(dm);
2651         return;
2652 }
2653
2654 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
2655 {
2656         struct mlx4_ib_qp *mqp;
2657         unsigned long flags_qp;
2658         unsigned long flags_cq;
2659         struct mlx4_ib_cq *send_mcq, *recv_mcq;
2660         struct list_head    cq_notify_list;
2661         struct mlx4_cq *mcq;
2662         unsigned long flags;
2663
2664         pr_warn("mlx4_ib_handle_catas_error was started\n");
2665         INIT_LIST_HEAD(&cq_notify_list);
2666
2667         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
2668         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
2669
2670         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
2671                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
2672                 if (mqp->sq.tail != mqp->sq.head) {
2673                         send_mcq = to_mcq(mqp->ibqp.send_cq);
2674                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
2675                         if (send_mcq->mcq.comp &&
2676                             mqp->ibqp.send_cq->comp_handler) {
2677                                 if (!send_mcq->mcq.reset_notify_added) {
2678                                         send_mcq->mcq.reset_notify_added = 1;
2679                                         list_add_tail(&send_mcq->mcq.reset_notify,
2680                                                       &cq_notify_list);
2681                                 }
2682                         }
2683                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
2684                 }
2685                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
2686                 /* Now, handle the QP's receive queue */
2687                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
2688                 /* no handling is needed for SRQ */
2689                 if (!mqp->ibqp.srq) {
2690                         if (mqp->rq.tail != mqp->rq.head) {
2691                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
2692                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
2693                                 if (recv_mcq->mcq.comp &&
2694                                     mqp->ibqp.recv_cq->comp_handler) {
2695                                         if (!recv_mcq->mcq.reset_notify_added) {
2696                                                 recv_mcq->mcq.reset_notify_added = 1;
2697                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
2698                                                               &cq_notify_list);
2699                                         }
2700                                 }
2701                                 spin_unlock_irqrestore(&recv_mcq->lock,
2702                                                        flags_cq);
2703                         }
2704                 }
2705                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
2706         }
2707
2708         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
2709                 mcq->comp(mcq);
2710         }
2711         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
2712         pr_warn("mlx4_ib_handle_catas_error ended\n");
2713 }
2714
2715 static void handle_bonded_port_state_event(struct work_struct *work)
2716 {
2717         struct ib_event_work *ew =
2718                 container_of(work, struct ib_event_work, work);
2719         struct mlx4_ib_dev *ibdev = ew->ib_dev;
2720         enum ib_port_state bonded_port_state = IB_PORT_NOP;
2721         int i;
2722         struct ib_event ibev;
2723
2724         kfree(ew);
2725         spin_lock_bh(&ibdev->iboe.lock);
2726         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
2727                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
2728                 enum ib_port_state curr_port_state;
2729
2730                 if (!curr_netdev)
2731                         continue;
2732
2733                 curr_port_state =
2734                         (netif_running(curr_netdev) &&
2735                          netif_carrier_ok(curr_netdev)) ?
2736                         IB_PORT_ACTIVE : IB_PORT_DOWN;
2737
2738                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
2739                         curr_port_state : IB_PORT_ACTIVE;
2740         }
2741         spin_unlock_bh(&ibdev->iboe.lock);
2742
2743         ibev.device = &ibdev->ib_dev;
2744         ibev.element.port_num = 1;
2745         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
2746                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2747
2748         ib_dispatch_event(&ibev);
2749 }
2750
2751 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2752                           enum mlx4_dev_event event, unsigned long param)
2753 {
2754         struct ib_event ibev;
2755         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2756         struct mlx4_eqe *eqe = NULL;
2757         struct ib_event_work *ew;
2758         int p = 0;
2759
2760         if (mlx4_is_bonded(dev) &&
2761             ((event == MLX4_DEV_EVENT_PORT_UP) ||
2762             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
2763                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
2764                 if (!ew)
2765                         return;
2766                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
2767                 ew->ib_dev = ibdev;
2768                 queue_work(wq, &ew->work);
2769                 return;
2770         }
2771
2772         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
2773                 eqe = (struct mlx4_eqe *)param;
2774         else
2775                 p = (int) param;
2776
2777         switch (event) {
2778         case MLX4_DEV_EVENT_PORT_UP:
2779                 if (p > ibdev->num_ports)
2780                         return;
2781                 if (mlx4_is_master(dev) &&
2782                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
2783                         IB_LINK_LAYER_INFINIBAND) {
2784                         mlx4_ib_invalidate_all_guid_record(ibdev, p);
2785                 }
2786                 ibev.event = IB_EVENT_PORT_ACTIVE;
2787                 break;
2788
2789         case MLX4_DEV_EVENT_PORT_DOWN:
2790                 if (p > ibdev->num_ports)
2791                         return;
2792                 ibev.event = IB_EVENT_PORT_ERR;
2793                 break;
2794
2795         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2796                 ibdev->ib_active = false;
2797                 ibev.event = IB_EVENT_DEVICE_FATAL;
2798                 mlx4_ib_handle_catas_error(ibdev);
2799                 break;
2800
2801         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
2802                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
2803                 if (!ew) {
2804                         pr_err("failed to allocate memory for events work\n");
2805                         break;
2806                 }
2807
2808                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
2809                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
2810                 ew->ib_dev = ibdev;
2811                 /* need to queue only for port owner, which uses GEN_EQE */
2812                 if (mlx4_is_master(dev))
2813                         queue_work(wq, &ew->work);
2814                 else
2815                         handle_port_mgmt_change_event(&ew->work);
2816                 return;
2817
2818         case MLX4_DEV_EVENT_SLAVE_INIT:
2819                 /* here, p is the slave id */
2820                 do_slave_init(ibdev, p, 1);
2821                 if (mlx4_is_master(dev)) {
2822                         int i;
2823
2824                         for (i = 1; i <= ibdev->num_ports; i++) {
2825                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
2826                                         == IB_LINK_LAYER_INFINIBAND)
2827                                         mlx4_ib_slave_alias_guid_event(ibdev,
2828                                                                        p, i,
2829                                                                        1);
2830                         }
2831                 }
2832                 return;
2833
2834         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
2835                 if (mlx4_is_master(dev)) {
2836                         int i;
2837
2838                         for (i = 1; i <= ibdev->num_ports; i++) {
2839                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
2840                                         == IB_LINK_LAYER_INFINIBAND)
2841                                         mlx4_ib_slave_alias_guid_event(ibdev,
2842                                                                        p, i,
2843                                                                        0);
2844                         }
2845                 }
2846                 /* here, p is the slave id */
2847                 do_slave_init(ibdev, p, 0);
2848                 return;
2849
2850         default:
2851                 return;
2852         }
2853
2854         ibev.device           = ibdev_ptr;
2855         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
2856
2857         ib_dispatch_event(&ibev);
2858 }
2859
2860 static struct mlx4_interface mlx4_ib_interface = {
2861         .add            = mlx4_ib_add,
2862         .remove         = mlx4_ib_remove,
2863         .event          = mlx4_ib_event,
2864         .protocol       = MLX4_PROT_IB_IPV6,
2865         .flags          = MLX4_INTFF_BONDING
2866 };
2867
2868 static int __init mlx4_ib_init(void)
2869 {
2870         int err;
2871
2872         wq = create_singlethread_workqueue("mlx4_ib");
2873         if (!wq)
2874                 return -ENOMEM;
2875
2876         err = mlx4_ib_mcg_init();
2877         if (err)
2878                 goto clean_wq;
2879
2880         err = mlx4_register_interface(&mlx4_ib_interface);
2881         if (err)
2882                 goto clean_mcg;
2883
2884         return 0;
2885
2886 clean_mcg:
2887         mlx4_ib_mcg_destroy();
2888
2889 clean_wq:
2890         destroy_workqueue(wq);
2891         return err;
2892 }
2893
2894 static void __exit mlx4_ib_cleanup(void)
2895 {
2896         mlx4_unregister_interface(&mlx4_ib_interface);
2897         mlx4_ib_mcg_destroy();
2898         destroy_workqueue(wq);
2899 }
2900
2901 module_init(mlx4_ib_init);
2902 module_exit(mlx4_ib_cleanup);