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);
 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->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 446                 0xffffff;
 447         props->vendor_part_id      = dev->dev->persist->pdev->device;
 448         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 449         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 450
 451         props->max_mr_size         = ~0ull;
 452         props->page_size_cap       = dev->dev->caps.page_size_cap;
 453         props->max_qp              = dev->dev->quotas.qp;
 454         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 455         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 456                                          dev->dev->caps.max_rq_sg);
 457         props->max_sge_rd = props->max_sge;
 458         props->max_cq              = dev->dev->quotas.cq;
 459         props->max_cqe             = dev->dev->caps.max_cqes;
 460         props->max_mr              = dev->dev->quotas.mpt;
 461         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 462         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 463         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 464         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 465         props->max_srq             = dev->dev->quotas.srq;
 466         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 467         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 468         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 469         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 470         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 471                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 472         props->masked_atomic_cap   = props->atomic_cap;
 473         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 474         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 475         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 476         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 477                                            props->max_mcast_grp;
 478         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 479         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 480         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 481
 482         if (!mlx4_is_slave(dev->dev))
 483                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 484
 485         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 486                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 487                 if (!err && !mlx4_is_slave(dev->dev)) {
 488                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 489                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 490                 }
 491         }
 492
 493         if (uhw->outlen) {
 494                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 495                 if (err)
 496                         goto out;
 497         }
 498 out:
 499         kfree(in_mad);
 500         kfree(out_mad);
 501
 502         return err;
 503 }
 504
 505 static enum rdma_link_layer
 506 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 507 {
 508         struct mlx4_dev *dev = to_mdev(device)->dev;
 509
 510         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 511                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 512 }
 513
 514 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 515                               struct ib_port_attr *props, int netw_view)
 516 {
 517         struct ib_smp *in_mad  = NULL;
 518         struct ib_smp *out_mad = NULL;
 519         int ext_active_speed;
 520         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 521         int err = -ENOMEM;
 522
 523         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 524         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 525         if (!in_mad || !out_mad)
 526                 goto out;
 527
 528         init_query_mad(in_mad);
 529         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 530         in_mad->attr_mod = cpu_to_be32(port);
 531
 532         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 533                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 534
 535         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 536                                 in_mad, out_mad);
 537         if (err)
 538                 goto out;
 539
 540
 541         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 542         props->lmc              = out_mad->data[34] & 0x7;
 543         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 544         props->sm_sl            = out_mad->data[36] & 0xf;
 545         props->state            = out_mad->data[32] & 0xf;
 546         props->phys_state       = out_mad->data[33] >> 4;
 547         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 548         if (netw_view)
 549                 props->gid_tbl_len = out_mad->data[50];
 550         else
 551                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 552         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 553         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 554         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 555         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 556         props->active_width     = out_mad->data[31] & 0xf;
 557         props->active_speed     = out_mad->data[35] >> 4;
 558         props->max_mtu          = out_mad->data[41] & 0xf;
 559         props->active_mtu       = out_mad->data[36] >> 4;
 560         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 561         props->max_vl_num       = out_mad->data[37] >> 4;
 562         props->init_type_reply  = out_mad->data[41] >> 4;
 563
 564         /* Check if extended speeds (EDR/FDR/...) are supported */
 565         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 566                 ext_active_speed = out_mad->data[62] >> 4;
 567
 568                 switch (ext_active_speed) {
 569                 case 1:
 570                         props->active_speed = IB_SPEED_FDR;
 571                         break;
 572                 case 2:
 573                         props->active_speed = IB_SPEED_EDR;
 574                         break;
 575                 }
 576         }
 577
 578         /* If reported active speed is QDR, check if is FDR-10 */
 579         if (props->active_speed == IB_SPEED_QDR) {
 580                 init_query_mad(in_mad);
 581                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 582                 in_mad->attr_mod = cpu_to_be32(port);
 583
 584                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 585                                    NULL, NULL, in_mad, out_mad);
 586                 if (err)
 587                         goto out;
 588
 589                 /* Checking LinkSpeedActive for FDR-10 */
 590                 if (out_mad->data[15] & 0x1)
 591                         props->active_speed = IB_SPEED_FDR10;
 592         }
 593
 594         /* Avoid wrong speed value returned by FW if the IB link is down. */
 595         if (props->state == IB_PORT_DOWN)
 596                  props->active_speed = IB_SPEED_SDR;
 597
 598 out:
 599         kfree(in_mad);
 600         kfree(out_mad);
 601         return err;
 602 }
 603
 604 static u8 state_to_phys_state(enum ib_port_state state)
 605 {
 606         return state == IB_PORT_ACTIVE ? 5 : 3;
 607 }
 608
 609 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 610                                struct ib_port_attr *props, int netw_view)
 611 {
 612
 613         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 614         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 615         struct net_device *ndev;
 616         enum ib_mtu tmp;
 617         struct mlx4_cmd_mailbox *mailbox;
 618         int err = 0;
 619         int is_bonded = mlx4_is_bonded(mdev->dev);
 620
 621         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 622         if (IS_ERR(mailbox))
 623                 return PTR_ERR(mailbox);
 624
 625         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 626                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 627                            MLX4_CMD_WRAPPED);
 628         if (err)
 629                 goto out;
 630
 631         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ?
 632                                                 IB_WIDTH_4X : IB_WIDTH_1X;
 633         props->active_speed     = IB_SPEED_QDR;
 634         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 635         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 636         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 637         props->pkey_tbl_len     = 1;
 638         props->max_mtu          = IB_MTU_4096;
 639         props->max_vl_num       = 2;
 640         props->state            = IB_PORT_DOWN;
 641         props->phys_state       = state_to_phys_state(props->state);
 642         props->active_mtu       = IB_MTU_256;
 643         spin_lock_bh(&iboe->lock);
 644         ndev = iboe->netdevs[port - 1];
 645         if (ndev && is_bonded) {
 646                 rcu_read_lock(); /* required to get upper dev */
 647                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 648                 rcu_read_unlock();
 649         }
 650         if (!ndev)
 651                 goto out_unlock;
 652
 653         tmp = iboe_get_mtu(ndev->mtu);
 654         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 655
 656         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 657                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 658         props->phys_state       = state_to_phys_state(props->state);
 659 out_unlock:
 660         spin_unlock_bh(&iboe->lock);
 661 out:
 662         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 663         return err;
 664 }
 665
 666 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 667                          struct ib_port_attr *props, int netw_view)
 668 {
 669         int err;
 670
 671         memset(props, 0, sizeof *props);
 672
 673         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 674                 ib_link_query_port(ibdev, port, props, netw_view) :
 675                                 eth_link_query_port(ibdev, port, props, netw_view);
 676
 677         return err;
 678 }
 679
 680 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 681                               struct ib_port_attr *props)
 682 {
 683         /* returns host view */
 684         return __mlx4_ib_query_port(ibdev, port, props, 0);
 685 }
 686
 687 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 688                         union ib_gid *gid, int netw_view)
 689 {
 690         struct ib_smp *in_mad  = NULL;
 691         struct ib_smp *out_mad = NULL;
 692         int err = -ENOMEM;
 693         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 694         int clear = 0;
 695         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 696
 697         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 698         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 699         if (!in_mad || !out_mad)
 700                 goto out;
 701
 702         init_query_mad(in_mad);
 703         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 704         in_mad->attr_mod = cpu_to_be32(port);
 705
 706         if (mlx4_is_mfunc(dev->dev) && netw_view)
 707                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 708
 709         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 710         if (err)
 711                 goto out;
 712
 713         memcpy(gid->raw, out_mad->data + 8, 8);
 714
 715         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 716                 if (index) {
 717                         /* For any index > 0, return the null guid */
 718                         err = 0;
 719                         clear = 1;
 720                         goto out;
 721                 }
 722         }
 723
 724         init_query_mad(in_mad);
 725         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 726         in_mad->attr_mod = cpu_to_be32(index / 8);
 727
 728         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 729                            NULL, NULL, in_mad, out_mad);
 730         if (err)
 731                 goto out;
 732
 733         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 734
 735 out:
 736         if (clear)
 737                 memset(gid->raw + 8, 0, 8);
 738         kfree(in_mad);
 739         kfree(out_mad);
 740         return err;
 741 }
 742
 743 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 744                              union ib_gid *gid)
 745 {
 746         int ret;
 747
 748         if (rdma_protocol_ib(ibdev, port))
 749                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 750
 751         if (!rdma_protocol_roce(ibdev, port))
 752                 return -ENODEV;
 753
 754         if (!rdma_cap_roce_gid_table(ibdev, port))
 755                 return -ENODEV;
 756
 757         ret = ib_get_cached_gid(ibdev, port, index, gid);
 758         if (ret == -EAGAIN) {
 759                 memcpy(gid, &zgid, sizeof(*gid));
 760                 return 0;
 761         }
 762
 763         return ret;
 764 }
 765
 766 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 767                          u16 *pkey, int netw_view)
 768 {
 769         struct ib_smp *in_mad  = NULL;
 770         struct ib_smp *out_mad = NULL;
 771         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 772         int err = -ENOMEM;
 773
 774         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 775         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 776         if (!in_mad || !out_mad)
 777                 goto out;
 778
 779         init_query_mad(in_mad);
 780         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 781         in_mad->attr_mod = cpu_to_be32(index / 32);
 782
 783         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 784                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 785
 786         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 787                            in_mad, out_mad);
 788         if (err)
 789                 goto out;
 790
 791         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 792
 793 out:
 794         kfree(in_mad);
 795         kfree(out_mad);
 796         return err;
 797 }
 798
 799 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 800 {
 801         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 802 }
 803
 804 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 805                                  struct ib_device_modify *props)
 806 {
 807         struct mlx4_cmd_mailbox *mailbox;
 808         unsigned long flags;
 809
 810         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 811                 return -EOPNOTSUPP;
 812
 813         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 814                 return 0;
 815
 816         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 817                 return -EOPNOTSUPP;
 818
 819         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 820         memcpy(ibdev->node_desc, props->node_desc, 64);
 821         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 822
 823         /*
 824          * If possible, pass node desc to FW, so it can generate
 825          * a 144 trap.  If cmd fails, just ignore.
 826          */
 827         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 828         if (IS_ERR(mailbox))
 829                 return 0;
 830
 831         memcpy(mailbox->buf, props->node_desc, 64);
 832         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 833                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 834
 835         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 836
 837         return 0;
 838 }
 839
 840 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 841                             u32 cap_mask)
 842 {
 843         struct mlx4_cmd_mailbox *mailbox;
 844         int err;
 845
 846         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 847         if (IS_ERR(mailbox))
 848                 return PTR_ERR(mailbox);
 849
 850         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 851                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 852                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 853         } else {
 854                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 855                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 856         }
 857
 858         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
 859                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 860                        MLX4_CMD_WRAPPED);
 861
 862         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 863         return err;
 864 }
 865
 866 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 867                                struct ib_port_modify *props)
 868 {
 869         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 870         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 871         struct ib_port_attr attr;
 872         u32 cap_mask;
 873         int err;
 874
 875         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
 876          * of whether port link layer is ETH or IB. For ETH ports, qkey
 877          * violations and port capabilities are not meaningful.
 878          */
 879         if (is_eth)
 880                 return 0;
 881
 882         mutex_lock(&mdev->cap_mask_mutex);
 883
 884         err = mlx4_ib_query_port(ibdev, port, &attr);
 885         if (err)
 886                 goto out;
 887
 888         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 889                 ~props->clr_port_cap_mask;
 890
 891         err = mlx4_ib_SET_PORT(mdev, port,
 892                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
 893                                cap_mask);
 894
 895 out:
 896         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 897         return err;
 898 }
 899
 900 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 901                                                   struct ib_udata *udata)
 902 {
 903         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 904         struct mlx4_ib_ucontext *context;
 905         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
 906         struct mlx4_ib_alloc_ucontext_resp resp;
 907         int err;
 908
 909         if (!dev->ib_active)
 910                 return ERR_PTR(-EAGAIN);
 911
 912         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
 913                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
 914                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
 915                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 916         } else {
 917                 resp.dev_caps         = dev->dev->caps.userspace_caps;
 918                 resp.qp_tab_size      = dev->dev->caps.num_qps;
 919                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 920                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 921                 resp.cqe_size         = dev->dev->caps.cqe_size;
 922         }
 923
 924         context = kzalloc(sizeof(*context), GFP_KERNEL);
 925         if (!context)
 926                 return ERR_PTR(-ENOMEM);
 927
 928         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 929         if (err) {
 930                 kfree(context);
 931                 return ERR_PTR(err);
 932         }
 933
 934         INIT_LIST_HEAD(&context->db_page_list);
 935         mutex_init(&context->db_page_mutex);
 936
 937         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
 938                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
 939         else
 940                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
 941
 942         if (err) {
 943                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 944                 kfree(context);
 945                 return ERR_PTR(-EFAULT);
 946         }
 947
 948         return &context->ibucontext;
 949 }
 950
 951 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 952 {
 953         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 954
 955         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 956         kfree(context);
 957
 958         return 0;
 959 }
 960
 961 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
 962 {
 963         /* vma_open is called when a new VMA is created on top of our VMA.
 964          * This is done through either mremap flow or split_vma (usually due
 965          * to mlock, madvise, munmap, etc.). We do not support a clone of the
 966          * vma, as this VMA is strongly hardware related. Therefore we set the
 967          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
 968          * calling us again and trying to do incorrect actions. We assume that
 969          * the original vma size is exactly a single page that there will be no
 970          * "splitting" operations on.
 971          */
 972         area->vm_ops = NULL;
 973 }
 974
 975 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
 976 {
 977         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
 978
 979         /* It's guaranteed that all VMAs opened on a FD are closed before the
 980          * file itself is closed, therefore no sync is needed with the regular
 981          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
 982          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
 983          * The close operation is usually called under mm->mmap_sem except when
 984          * process is exiting.  The exiting case is handled explicitly as part
 985          * of mlx4_ib_disassociate_ucontext.
 986          */
 987         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
 988                                 area->vm_private_data;
 989
 990         /* set the vma context pointer to null in the mlx4_ib driver's private
 991          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
 992          */
 993         mlx4_ib_vma_priv_data->vma = NULL;
 994 }
 995
 996 static const struct vm_operations_struct mlx4_ib_vm_ops = {
 997         .open = mlx4_ib_vma_open,
 998         .close = mlx4_ib_vma_close
 999 };
1000
1001 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1002 {
1003         int i;
1004         int ret = 0;
1005         struct vm_area_struct *vma;
1006         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1007         struct task_struct *owning_process  = NULL;
1008         struct mm_struct   *owning_mm       = NULL;
1009
1010         owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1011         if (!owning_process)
1012                 return;
1013
1014         owning_mm = get_task_mm(owning_process);
1015         if (!owning_mm) {
1016                 pr_info("no mm, disassociate ucontext is pending task termination\n");
1017                 while (1) {
1018                         /* make sure that task is dead before returning, it may
1019                          * prevent a rare case of module down in parallel to a
1020                          * call to mlx4_ib_vma_close.
1021                          */
1022                         put_task_struct(owning_process);
1023                         msleep(1);
1024                         owning_process = get_pid_task(ibcontext->tgid,
1025                                                       PIDTYPE_PID);
1026                         if (!owning_process ||
1027                             owning_process->state == TASK_DEAD) {
1028                                 pr_info("disassociate ucontext done, task was terminated\n");
1029                                 /* in case task was dead need to release the task struct */
1030                                 if (owning_process)
1031                                         put_task_struct(owning_process);
1032                                 return;
1033                         }
1034                 }
1035         }
1036
1037         /* need to protect from a race on closing the vma as part of
1038          * mlx4_ib_vma_close().
1039          */
1040         down_read(&owning_mm->mmap_sem);
1041         for (i = 0; i < HW_BAR_COUNT; i++) {
1042                 vma = context->hw_bar_info[i].vma;
1043                 if (!vma)
1044                         continue;
1045
1046                 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1047                                    context->hw_bar_info[i].vma->vm_start,
1048                                    PAGE_SIZE);
1049                 if (ret) {
1050                         pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1051                         BUG_ON(1);
1052                 }
1053
1054                 /* context going to be destroyed, should not access ops any more */
1055                 context->hw_bar_info[i].vma->vm_ops = NULL;
1056         }
1057
1058         up_read(&owning_mm->mmap_sem);
1059         mmput(owning_mm);
1060         put_task_struct(owning_process);
1061 }
1062
1063 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1064                                  struct mlx4_ib_vma_private_data *vma_private_data)
1065 {
1066         vma_private_data->vma = vma;
1067         vma->vm_private_data = vma_private_data;
1068         vma->vm_ops =  &mlx4_ib_vm_ops;
1069 }
1070
1071 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1072 {
1073         struct mlx4_ib_dev *dev = to_mdev(context->device);
1074         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1075
1076         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1077                 return -EINVAL;
1078
1079         if (vma->vm_pgoff == 0) {
1080                 /* We prevent double mmaping on same context */
1081                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1082                         return -EINVAL;
1083
1084                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1085
1086                 if (io_remap_pfn_range(vma, vma->vm_start,
1087                                        to_mucontext(context)->uar.pfn,
1088                                        PAGE_SIZE, vma->vm_page_prot))
1089                         return -EAGAIN;
1090
1091                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1092
1093         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1094                 /* We prevent double mmaping on same context */
1095                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1096                         return -EINVAL;
1097
1098                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1099
1100                 if (io_remap_pfn_range(vma, vma->vm_start,
1101                                        to_mucontext(context)->uar.pfn +
1102                                        dev->dev->caps.num_uars,
1103                                        PAGE_SIZE, vma->vm_page_prot))
1104                         return -EAGAIN;
1105
1106                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1107
1108         } else if (vma->vm_pgoff == 3) {
1109                 struct mlx4_clock_params params;
1110                 int ret;
1111
1112                 /* We prevent double mmaping on same context */
1113                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1114                         return -EINVAL;
1115
1116                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1117
1118                 if (ret)
1119                         return ret;
1120
1121                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1122                 if (io_remap_pfn_range(vma, vma->vm_start,
1123                                        (pci_resource_start(dev->dev->persist->pdev,
1124                                                            params.bar) +
1125                                         params.offset)
1126                                        >> PAGE_SHIFT,
1127                                        PAGE_SIZE, vma->vm_page_prot))
1128                         return -EAGAIN;
1129
1130                 mlx4_ib_set_vma_data(vma,
1131                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1132         } else {
1133                 return -EINVAL;
1134         }
1135
1136         return 0;
1137 }
1138
1139 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1140                                       struct ib_ucontext *context,
1141                                       struct ib_udata *udata)
1142 {
1143         struct mlx4_ib_pd *pd;
1144         int err;
1145
1146         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1147         if (!pd)
1148                 return ERR_PTR(-ENOMEM);
1149
1150         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1151         if (err) {
1152                 kfree(pd);
1153                 return ERR_PTR(err);
1154         }
1155
1156         if (context)
1157                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1158                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1159                         kfree(pd);
1160                         return ERR_PTR(-EFAULT);
1161                 }
1162
1163         return &pd->ibpd;
1164 }
1165
1166 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1167 {
1168         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1169         kfree(pd);
1170
1171         return 0;
1172 }
1173
1174 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1175                                           struct ib_ucontext *context,
1176                                           struct ib_udata *udata)
1177 {
1178         struct mlx4_ib_xrcd *xrcd;
1179         struct ib_cq_init_attr cq_attr = {};
1180         int err;
1181
1182         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1183                 return ERR_PTR(-ENOSYS);
1184
1185         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1186         if (!xrcd)
1187                 return ERR_PTR(-ENOMEM);
1188
1189         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1190         if (err)
1191                 goto err1;
1192
1193         xrcd->pd = ib_alloc_pd(ibdev);
1194         if (IS_ERR(xrcd->pd)) {
1195                 err = PTR_ERR(xrcd->pd);
1196                 goto err2;
1197         }
1198
1199         cq_attr.cqe = 1;
1200         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1201         if (IS_ERR(xrcd->cq)) {
1202                 err = PTR_ERR(xrcd->cq);
1203                 goto err3;
1204         }
1205
1206         return &xrcd->ibxrcd;
1207
1208 err3:
1209         ib_dealloc_pd(xrcd->pd);
1210 err2:
1211         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1212 err1:
1213         kfree(xrcd);
1214         return ERR_PTR(err);
1215 }
1216
1217 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1218 {
1219         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1220         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1221         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1222         kfree(xrcd);
1223
1224         return 0;
1225 }
1226
1227 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1228 {
1229         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1230         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1231         struct mlx4_ib_gid_entry *ge;
1232
1233         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1234         if (!ge)
1235                 return -ENOMEM;
1236
1237         ge->gid = *gid;
1238         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1239                 ge->port = mqp->port;
1240                 ge->added = 1;
1241         }
1242
1243         mutex_lock(&mqp->mutex);
1244         list_add_tail(&ge->list, &mqp->gid_list);
1245         mutex_unlock(&mqp->mutex);
1246
1247         return 0;
1248 }
1249
1250 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1251                    union ib_gid *gid)
1252 {
1253         struct net_device *ndev;
1254         int ret = 0;
1255
1256         if (!mqp->port)
1257                 return 0;
1258
1259         spin_lock_bh(&mdev->iboe.lock);
1260         ndev = mdev->iboe.netdevs[mqp->port - 1];
1261         if (ndev)
1262                 dev_hold(ndev);
1263         spin_unlock_bh(&mdev->iboe.lock);
1264
1265         if (ndev) {
1266                 ret = 1;
1267                 dev_put(ndev);
1268         }
1269
1270         return ret;
1271 }
1272
1273 struct mlx4_ib_steering {
1274         struct list_head list;
1275         struct mlx4_flow_reg_id reg_id;
1276         union ib_gid gid;
1277 };
1278
1279 static int parse_flow_attr(struct mlx4_dev *dev,
1280                            u32 qp_num,
1281                            union ib_flow_spec *ib_spec,
1282                            struct _rule_hw *mlx4_spec)
1283 {
1284         enum mlx4_net_trans_rule_id type;
1285
1286         switch (ib_spec->type) {
1287         case IB_FLOW_SPEC_ETH:
1288                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1289                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1290                        ETH_ALEN);
1291                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1292                        ETH_ALEN);
1293                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1294                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1295                 break;
1296         case IB_FLOW_SPEC_IB:
1297                 type = MLX4_NET_TRANS_RULE_ID_IB;
1298                 mlx4_spec->ib.l3_qpn =
1299                         cpu_to_be32(qp_num);
1300                 mlx4_spec->ib.qpn_mask =
1301                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1302                 break;
1303
1304
1305         case IB_FLOW_SPEC_IPV4:
1306                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1307                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1308                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1309                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1310                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1311                 break;
1312
1313         case IB_FLOW_SPEC_TCP:
1314         case IB_FLOW_SPEC_UDP:
1315                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1316                                         MLX4_NET_TRANS_RULE_ID_TCP :
1317                                         MLX4_NET_TRANS_RULE_ID_UDP;
1318                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1319                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1320                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1321                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1322                 break;
1323
1324         default:
1325                 return -EINVAL;
1326         }
1327         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1328             mlx4_hw_rule_sz(dev, type) < 0)
1329                 return -EINVAL;
1330         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1331         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1332         return mlx4_hw_rule_sz(dev, type);
1333 }
1334
1335 struct default_rules {
1336         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1337         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1338         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1339         __u8  link_layer;
1340 };
1341 static const struct default_rules default_table[] = {
1342         {
1343                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1344                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1345                 .rules_create_list = {IB_FLOW_SPEC_IB},
1346                 .link_layer = IB_LINK_LAYER_INFINIBAND
1347         }
1348 };
1349
1350 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1351                                          struct ib_flow_attr *flow_attr)
1352 {
1353         int i, j, k;
1354         void *ib_flow;
1355         const struct default_rules *pdefault_rules = default_table;
1356         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1357
1358         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1359                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1360                 memset(&field_types, 0, sizeof(field_types));
1361
1362                 if (link_layer != pdefault_rules->link_layer)
1363                         continue;
1364
1365                 ib_flow = flow_attr + 1;
1366                 /* we assume the specs are sorted */
1367                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1368                      j < flow_attr->num_of_specs; k++) {
1369                         union ib_flow_spec *current_flow =
1370                                 (union ib_flow_spec *)ib_flow;
1371
1372                         /* same layer but different type */
1373                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1374                              (pdefault_rules->mandatory_fields[k] &
1375                               IB_FLOW_SPEC_LAYER_MASK)) &&
1376                             (current_flow->type !=
1377                              pdefault_rules->mandatory_fields[k]))
1378                                 goto out;
1379
1380                         /* same layer, try match next one */
1381                         if (current_flow->type ==
1382                             pdefault_rules->mandatory_fields[k]) {
1383                                 j++;
1384                                 ib_flow +=
1385                                         ((union ib_flow_spec *)ib_flow)->size;
1386                         }
1387                 }
1388
1389                 ib_flow = flow_attr + 1;
1390                 for (j = 0; j < flow_attr->num_of_specs;
1391                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1392                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1393                                 /* same layer and same type */
1394                                 if (((union ib_flow_spec *)ib_flow)->type ==
1395                                     pdefault_rules->mandatory_not_fields[k])
1396                                         goto out;
1397
1398                 return i;
1399         }
1400 out:
1401         return -1;
1402 }
1403
1404 static int __mlx4_ib_create_default_rules(
1405                 struct mlx4_ib_dev *mdev,
1406                 struct ib_qp *qp,
1407                 const struct default_rules *pdefault_rules,
1408                 struct _rule_hw *mlx4_spec) {
1409         int size = 0;
1410         int i;
1411
1412         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1413                 int ret;
1414                 union ib_flow_spec ib_spec;
1415                 switch (pdefault_rules->rules_create_list[i]) {
1416                 case 0:
1417                         /* no rule */
1418                         continue;
1419                 case IB_FLOW_SPEC_IB:
1420                         ib_spec.type = IB_FLOW_SPEC_IB;
1421                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1422
1423                         break;
1424                 default:
1425                         /* invalid rule */
1426                         return -EINVAL;
1427                 }
1428                 /* We must put empty rule, qpn is being ignored */
1429                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1430                                       mlx4_spec);
1431                 if (ret < 0) {
1432                         pr_info("invalid parsing\n");
1433                         return -EINVAL;
1434                 }
1435
1436                 mlx4_spec = (void *)mlx4_spec + ret;
1437                 size += ret;
1438         }
1439         return size;
1440 }
1441
1442 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1443                           int domain,
1444                           enum mlx4_net_trans_promisc_mode flow_type,
1445                           u64 *reg_id)
1446 {
1447         int ret, i;
1448         int size = 0;
1449         void *ib_flow;
1450         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1451         struct mlx4_cmd_mailbox *mailbox;
1452         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1453         int default_flow;
1454
1455         static const u16 __mlx4_domain[] = {
1456                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1457                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1458                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1459                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1460         };
1461
1462         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1463                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1464                 return -EINVAL;
1465         }
1466
1467         if (domain >= IB_FLOW_DOMAIN_NUM) {
1468                 pr_err("Invalid domain value %d\n", domain);
1469                 return -EINVAL;
1470         }
1471
1472         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1473                 return -EINVAL;
1474
1475         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1476         if (IS_ERR(mailbox))
1477                 return PTR_ERR(mailbox);
1478         ctrl = mailbox->buf;
1479
1480         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1481                                  flow_attr->priority);
1482         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1483         ctrl->port = flow_attr->port;
1484         ctrl->qpn = cpu_to_be32(qp->qp_num);
1485
1486         ib_flow = flow_attr + 1;
1487         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1488         /* Add default flows */
1489         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1490         if (default_flow >= 0) {
1491                 ret = __mlx4_ib_create_default_rules(
1492                                 mdev, qp, default_table + default_flow,
1493                                 mailbox->buf + size);
1494                 if (ret < 0) {
1495                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1496                         return -EINVAL;
1497                 }
1498                 size += ret;
1499         }
1500         for (i = 0; i < flow_attr->num_of_specs; i++) {
1501                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1502                                       mailbox->buf + size);
1503                 if (ret < 0) {
1504                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1505                         return -EINVAL;
1506                 }
1507                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1508                 size += ret;
1509         }
1510
1511         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1512                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1513                            MLX4_CMD_WRAPPED);
1514         if (ret == -ENOMEM)
1515                 pr_err("mcg table is full. Fail to register network rule.\n");
1516         else if (ret == -ENXIO)
1517                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1518         else if (ret)
1519                 pr_err("Invalid argumant. Fail to register network rule.\n");
1520
1521         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1522         return ret;
1523 }
1524
1525 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1526 {
1527         int err;
1528         err = mlx4_cmd(dev, reg_id, 0, 0,
1529                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1530                        MLX4_CMD_WRAPPED);
1531         if (err)
1532                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1533                        reg_id);
1534         return err;
1535 }
1536
1537 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1538                                     u64 *reg_id)
1539 {
1540         void *ib_flow;
1541         union ib_flow_spec *ib_spec;
1542         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1543         int err = 0;
1544
1545         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1546             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1547                 return 0; /* do nothing */
1548
1549         ib_flow = flow_attr + 1;
1550         ib_spec = (union ib_flow_spec *)ib_flow;
1551
1552         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1553                 return 0; /* do nothing */
1554
1555         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1556                                     flow_attr->port, qp->qp_num,
1557                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1558                                     reg_id);
1559         return err;
1560 }
1561
1562 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1563                                     struct ib_flow_attr *flow_attr,
1564                                     int domain)
1565 {
1566         int err = 0, i = 0, j = 0;
1567         struct mlx4_ib_flow *mflow;
1568         enum mlx4_net_trans_promisc_mode type[2];
1569         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1570         int is_bonded = mlx4_is_bonded(dev);
1571
1572         memset(type, 0, sizeof(type));
1573
1574         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1575         if (!mflow) {
1576                 err = -ENOMEM;
1577                 goto err_free;
1578         }
1579
1580         switch (flow_attr->type) {
1581         case IB_FLOW_ATTR_NORMAL:
1582                 type[0] = MLX4_FS_REGULAR;
1583                 break;
1584
1585         case IB_FLOW_ATTR_ALL_DEFAULT:
1586                 type[0] = MLX4_FS_ALL_DEFAULT;
1587                 break;
1588
1589         case IB_FLOW_ATTR_MC_DEFAULT:
1590                 type[0] = MLX4_FS_MC_DEFAULT;
1591                 break;
1592
1593         case IB_FLOW_ATTR_SNIFFER:
1594                 type[0] = MLX4_FS_UC_SNIFFER;
1595                 type[1] = MLX4_FS_MC_SNIFFER;
1596                 break;
1597
1598         default:
1599                 err = -EINVAL;
1600                 goto err_free;
1601         }
1602
1603         while (i < ARRAY_SIZE(type) && type[i]) {
1604                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1605                                             &mflow->reg_id[i].id);
1606                 if (err)
1607                         goto err_create_flow;
1608                 if (is_bonded) {
1609                         /* Application always sees one port so the mirror rule
1610                          * must be on port #2
1611                          */
1612                         flow_attr->port = 2;
1613                         err = __mlx4_ib_create_flow(qp, flow_attr,
1614                                                     domain, type[j],
1615                                                     &mflow->reg_id[j].mirror);
1616                         flow_attr->port = 1;
1617                         if (err)
1618                                 goto err_create_flow;
1619                         j++;
1620                 }
1621
1622                 i++;
1623         }
1624
1625         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1626                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1627                                                &mflow->reg_id[i].id);
1628                 if (err)
1629                         goto err_create_flow;
1630
1631                 if (is_bonded) {
1632                         flow_attr->port = 2;
1633                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1634                                                        &mflow->reg_id[j].mirror);
1635                         flow_attr->port = 1;
1636                         if (err)
1637                                 goto err_create_flow;
1638                         j++;
1639                 }
1640                 /* function to create mirror rule */
1641                 i++;
1642         }
1643
1644         return &mflow->ibflow;
1645
1646 err_create_flow:
1647         while (i) {
1648                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1649                                              mflow->reg_id[i].id);
1650                 i--;
1651         }
1652
1653         while (j) {
1654                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1655                                              mflow->reg_id[j].mirror);
1656                 j--;
1657         }
1658 err_free:
1659         kfree(mflow);
1660         return ERR_PTR(err);
1661 }
1662
1663 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1664 {
1665         int err, ret = 0;
1666         int i = 0;
1667         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1668         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1669
1670         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1671                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1672                 if (err)
1673                         ret = err;
1674                 if (mflow->reg_id[i].mirror) {
1675                         err = __mlx4_ib_destroy_flow(mdev->dev,
1676                                                      mflow->reg_id[i].mirror);
1677                         if (err)
1678                                 ret = err;
1679                 }
1680                 i++;
1681         }
1682
1683         kfree(mflow);
1684         return ret;
1685 }
1686
1687 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1688 {
1689         int err;
1690         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1691         struct mlx4_dev *dev = mdev->dev;
1692         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1693         struct mlx4_ib_steering *ib_steering = NULL;
1694         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1695         struct mlx4_flow_reg_id reg_id;
1696
1697         if (mdev->dev->caps.steering_mode ==
1698             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1699                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1700                 if (!ib_steering)
1701                         return -ENOMEM;
1702         }
1703
1704         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1705                                     !!(mqp->flags &
1706                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1707                                     prot, &reg_id.id);
1708         if (err) {
1709                 pr_err("multicast attach op failed, err %d\n", err);
1710                 goto err_malloc;
1711         }
1712
1713         reg_id.mirror = 0;
1714         if (mlx4_is_bonded(dev)) {
1715                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1716                                             (mqp->port == 1) ? 2 : 1,
1717                                             !!(mqp->flags &
1718                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1719                                             prot, &reg_id.mirror);
1720                 if (err)
1721                         goto err_add;
1722         }
1723
1724         err = add_gid_entry(ibqp, gid);
1725         if (err)
1726                 goto err_add;
1727
1728         if (ib_steering) {
1729                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1730                 ib_steering->reg_id = reg_id;
1731                 mutex_lock(&mqp->mutex);
1732                 list_add(&ib_steering->list, &mqp->steering_rules);
1733                 mutex_unlock(&mqp->mutex);
1734         }
1735         return 0;
1736
1737 err_add:
1738         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1739                               prot, reg_id.id);
1740         if (reg_id.mirror)
1741                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1742                                       prot, reg_id.mirror);
1743 err_malloc:
1744         kfree(ib_steering);
1745
1746         return err;
1747 }
1748
1749 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1750 {
1751         struct mlx4_ib_gid_entry *ge;
1752         struct mlx4_ib_gid_entry *tmp;
1753         struct mlx4_ib_gid_entry *ret = NULL;
1754
1755         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1756                 if (!memcmp(raw, ge->gid.raw, 16)) {
1757                         ret = ge;
1758                         break;
1759                 }
1760         }
1761
1762         return ret;
1763 }
1764
1765 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1766 {
1767         int err;
1768         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1769         struct mlx4_dev *dev = mdev->dev;
1770         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1771         struct net_device *ndev;
1772         struct mlx4_ib_gid_entry *ge;
1773         struct mlx4_flow_reg_id reg_id = {0, 0};
1774         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1775
1776         if (mdev->dev->caps.steering_mode ==
1777             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1778                 struct mlx4_ib_steering *ib_steering;
1779
1780                 mutex_lock(&mqp->mutex);
1781                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1782                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1783                                 list_del(&ib_steering->list);
1784                                 break;
1785                         }
1786                 }
1787                 mutex_unlock(&mqp->mutex);
1788                 if (&ib_steering->list == &mqp->steering_rules) {
1789                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1790                         return -EINVAL;
1791                 }
1792                 reg_id = ib_steering->reg_id;
1793                 kfree(ib_steering);
1794         }
1795
1796         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1797                                     prot, reg_id.id);
1798         if (err)
1799                 return err;
1800
1801         if (mlx4_is_bonded(dev)) {
1802                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1803                                             prot, reg_id.mirror);
1804                 if (err)
1805                         return err;
1806         }
1807
1808         mutex_lock(&mqp->mutex);
1809         ge = find_gid_entry(mqp, gid->raw);
1810         if (ge) {
1811                 spin_lock_bh(&mdev->iboe.lock);
1812                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1813                 if (ndev)
1814                         dev_hold(ndev);
1815                 spin_unlock_bh(&mdev->iboe.lock);
1816                 if (ndev)
1817                         dev_put(ndev);
1818                 list_del(&ge->list);
1819                 kfree(ge);
1820         } else
1821                 pr_warn("could not find mgid entry\n");
1822
1823         mutex_unlock(&mqp->mutex);
1824
1825         return 0;
1826 }
1827
1828 static int init_node_data(struct mlx4_ib_dev *dev)
1829 {
1830         struct ib_smp *in_mad  = NULL;
1831         struct ib_smp *out_mad = NULL;
1832         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1833         int err = -ENOMEM;
1834
1835         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1836         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1837         if (!in_mad || !out_mad)
1838                 goto out;
1839
1840         init_query_mad(in_mad);
1841         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1842         if (mlx4_is_master(dev->dev))
1843                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1844
1845         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1846         if (err)
1847                 goto out;
1848
1849         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1850
1851         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1852
1853         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1854         if (err)
1855                 goto out;
1856
1857         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1858         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1859
1860 out:
1861         kfree(in_mad);
1862         kfree(out_mad);
1863         return err;
1864 }
1865
1866 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1867                         char *buf)
1868 {
1869         struct mlx4_ib_dev *dev =
1870                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1871         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
1872 }
1873
1874 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1875                            char *buf)
1876 {
1877         struct mlx4_ib_dev *dev =
1878                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1879         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
1880                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
1881                        (int) dev->dev->caps.fw_ver & 0xffff);
1882 }
1883
1884 static ssize_t show_rev(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, "%x\n", dev->dev->rev_id);
1890 }
1891
1892 static ssize_t show_board(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, "%.*s\n", MLX4_BOARD_ID_LEN,
1898                        dev->dev->board_id);
1899 }
1900
1901 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1902 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1903 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1904 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1905
1906 static struct device_attribute *mlx4_class_attributes[] = {
1907         &dev_attr_hw_rev,
1908         &dev_attr_fw_ver,
1909         &dev_attr_hca_type,
1910         &dev_attr_board_id
1911 };
1912
1913 #define MLX4_IB_INVALID_MAC     ((u64)-1)
1914 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
1915                                struct net_device *dev,
1916                                int port)
1917 {
1918         u64 new_smac = 0;
1919         u64 release_mac = MLX4_IB_INVALID_MAC;
1920         struct mlx4_ib_qp *qp;
1921
1922         read_lock(&dev_base_lock);
1923         new_smac = mlx4_mac_to_u64(dev->dev_addr);
1924         read_unlock(&dev_base_lock);
1925
1926         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
1927
1928         /* no need for update QP1 and mac registration in non-SRIOV */
1929         if (!mlx4_is_mfunc(ibdev->dev))
1930                 return;
1931
1932         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
1933         qp = ibdev->qp1_proxy[port - 1];
1934         if (qp) {
1935                 int new_smac_index;
1936                 u64 old_smac;
1937                 struct mlx4_update_qp_params update_params;
1938
1939                 mutex_lock(&qp->mutex);
1940                 old_smac = qp->pri.smac;
1941                 if (new_smac == old_smac)
1942                         goto unlock;
1943
1944                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
1945
1946                 if (new_smac_index < 0)
1947                         goto unlock;
1948
1949                 update_params.smac_index = new_smac_index;
1950                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
1951                                    &update_params)) {
1952                         release_mac = new_smac;
1953                         goto unlock;
1954                 }
1955                 /* if old port was zero, no mac was yet registered for this QP */
1956                 if (qp->pri.smac_port)
1957                         release_mac = old_smac;
1958                 qp->pri.smac = new_smac;
1959                 qp->pri.smac_port = port;
1960                 qp->pri.smac_index = new_smac_index;
1961         }
1962
1963 unlock:
1964         if (release_mac != MLX4_IB_INVALID_MAC)
1965                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
1966         if (qp)
1967                 mutex_unlock(&qp->mutex);
1968         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
1969 }
1970
1971 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
1972                                  struct net_device *dev,
1973                                  unsigned long event)
1974
1975 {
1976         struct mlx4_ib_iboe *iboe;
1977         int update_qps_port = -1;
1978         int port;
1979
1980         ASSERT_RTNL();
1981
1982         iboe = &ibdev->iboe;
1983
1984         spin_lock_bh(&iboe->lock);
1985         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1986
1987                 iboe->netdevs[port - 1] =
1988                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1989
1990                 if (dev == iboe->netdevs[port - 1] &&
1991                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
1992                      event == NETDEV_UP || event == NETDEV_CHANGE))
1993                         update_qps_port = port;
1994
1995         }
1996         spin_unlock_bh(&iboe->lock);
1997
1998         if (update_qps_port > 0)
1999                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2000 }
2001
2002 static int mlx4_ib_netdev_event(struct notifier_block *this,
2003                                 unsigned long event, void *ptr)
2004 {
2005         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2006         struct mlx4_ib_dev *ibdev;
2007
2008         if (!net_eq(dev_net(dev), &init_net))
2009                 return NOTIFY_DONE;
2010
2011         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2012         mlx4_ib_scan_netdevs(ibdev, dev, event);
2013
2014         return NOTIFY_DONE;
2015 }
2016
2017 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2018 {
2019         int port;
2020         int slave;
2021         int i;
2022
2023         if (mlx4_is_master(ibdev->dev)) {
2024                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2025                      ++slave) {
2026                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2027                                 for (i = 0;
2028                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2029                                      ++i) {
2030                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2031                                         /* master has the identity virt2phys pkey mapping */
2032                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2033                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2034                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2035                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2036                                 }
2037                         }
2038                 }
2039                 /* initialize pkey cache */
2040                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2041                         for (i = 0;
2042                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2043                              ++i)
2044                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2045                                         (i) ? 0 : 0xFFFF;
2046                 }
2047         }
2048 }
2049
2050 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2051 {
2052         int i, j, eq = 0, total_eqs = 0;
2053
2054         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2055                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2056         if (!ibdev->eq_table)
2057                 return;
2058
2059         for (i = 1; i <= dev->caps.num_ports; i++) {
2060                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2061                      j++, total_eqs++) {
2062                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2063                                 continue;
2064                         ibdev->eq_table[eq] = total_eqs;
2065                         if (!mlx4_assign_eq(dev, i,
2066                                             &ibdev->eq_table[eq]))
2067                                 eq++;
2068                         else
2069                                 ibdev->eq_table[eq] = -1;
2070                 }
2071         }
2072
2073         for (i = eq; i < dev->caps.num_comp_vectors;
2074              ibdev->eq_table[i++] = -1)
2075                 ;
2076
2077         /* Advertise the new number of EQs to clients */
2078         ibdev->ib_dev.num_comp_vectors = eq;
2079 }
2080
2081 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2082 {
2083         int i;
2084         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2085
2086         /* no eqs were allocated */
2087         if (!ibdev->eq_table)
2088                 return;
2089
2090         /* Reset the advertised EQ number */
2091         ibdev->ib_dev.num_comp_vectors = 0;
2092
2093         for (i = 0; i < total_eqs; i++)
2094                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2095
2096         kfree(ibdev->eq_table);
2097         ibdev->eq_table = NULL;
2098 }
2099
2100 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2101                                struct ib_port_immutable *immutable)
2102 {
2103         struct ib_port_attr attr;
2104         int err;
2105
2106         err = mlx4_ib_query_port(ibdev, port_num, &attr);
2107         if (err)
2108                 return err;
2109
2110         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2111         immutable->gid_tbl_len = attr.gid_tbl_len;
2112
2113         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND)
2114                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2115         else
2116                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2117
2118         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2119
2120         return 0;
2121 }
2122
2123 static void *mlx4_ib_add(struct mlx4_dev *dev)
2124 {
2125         struct mlx4_ib_dev *ibdev;
2126         int num_ports = 0;
2127         int i, j;
2128         int err;
2129         struct mlx4_ib_iboe *iboe;
2130         int ib_num_ports = 0;
2131         int num_req_counters;
2132         int allocated;
2133         u32 counter_index;
2134
2135         pr_info_once("%s", mlx4_ib_version);
2136
2137         num_ports = 0;
2138         mlx4_foreach_ib_transport_port(i, dev)
2139                 num_ports++;
2140
2141         /* No point in registering a device with no ports... */
2142         if (num_ports == 0)
2143                 return NULL;
2144
2145         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2146         if (!ibdev) {
2147                 dev_err(&dev->persist->pdev->dev,
2148                         "Device struct alloc failed\n");
2149                 return NULL;
2150         }
2151
2152         iboe = &ibdev->iboe;
2153
2154         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2155                 goto err_dealloc;
2156
2157         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2158                 goto err_pd;
2159
2160         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2161                                  PAGE_SIZE);
2162         if (!ibdev->uar_map)
2163                 goto err_uar;
2164         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2165
2166         ibdev->dev = dev;
2167         ibdev->bond_next_port   = 0;
2168
2169         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2170         ibdev->ib_dev.owner             = THIS_MODULE;
2171         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2172         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2173         ibdev->num_ports                = num_ports;
2174         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2175                                                 1 : ibdev->num_ports;
2176         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2177         ibdev->ib_dev.dma_device        = &dev->persist->pdev->dev;
2178         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2179         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2180         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2181
2182         if (dev->caps.userspace_caps)
2183                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2184         else
2185                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2186
2187         ibdev->ib_dev.uverbs_cmd_mask   =
2188                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2189                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2190                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2191                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2192                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2193                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2194                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2195                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2196                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2197                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2198                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2199                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2200                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2201                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2202                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2203                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2204                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2205                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2206                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2207                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2208                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2209                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2210                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2211                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2212
2213         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2214         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2215         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2216         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2217         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2218         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2219         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2220         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2221         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2222         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2223         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2224         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2225         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2226         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2227         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2228         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2229         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2230         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2231         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2232         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2233         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2234         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2235         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2236         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2237         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2238         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2239         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2240         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2241         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2242         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2243         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2244         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2245         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2246         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2247         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2248         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2249         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2250         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
2251         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
2252         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2253         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2254         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2255         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2256         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2257
2258         if (!mlx4_is_slave(ibdev->dev)) {
2259                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2260                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2261                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2262                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2263         }
2264
2265         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2266             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2267                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2268                 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
2269                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2270
2271                 ibdev->ib_dev.uverbs_cmd_mask |=
2272                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2273                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2274         }
2275
2276         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2277                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2278                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2279                 ibdev->ib_dev.uverbs_cmd_mask |=
2280                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2281                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2282         }
2283
2284         if (check_flow_steering_support(dev)) {
2285                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2286                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2287                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2288
2289                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2290                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2291                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2292         }
2293
2294         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2295                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2296                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ);
2297
2298         mlx4_ib_alloc_eqs(dev, ibdev);
2299
2300         spin_lock_init(&iboe->lock);
2301
2302         if (init_node_data(ibdev))
2303                 goto err_map;
2304
2305         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2306         for (i = 0; i < num_req_counters; ++i) {
2307                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2308                 allocated = 0;
2309                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2310                                                 IB_LINK_LAYER_ETHERNET) {
2311                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2312                         /* if failed to allocate a new counter, use default */
2313                         if (err)
2314                                 counter_index =
2315                                         mlx4_get_default_counter_index(dev,
2316                                                                        i + 1);
2317                         else
2318                                 allocated = 1;
2319                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2320                         counter_index = mlx4_get_default_counter_index(dev,
2321                                                                        i + 1);
2322                 }
2323                 ibdev->counters[i].index = counter_index;
2324                 ibdev->counters[i].allocated = allocated;
2325                 pr_info("counter index %d for port %d allocated %d\n",
2326                         counter_index, i + 1, allocated);
2327         }
2328         if (mlx4_is_bonded(dev))
2329                 for (i = 1; i < ibdev->num_ports ; ++i) {
2330                         ibdev->counters[i].index = ibdev->counters[0].index;
2331                         ibdev->counters[i].allocated = 0;
2332                 }
2333
2334         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2335                 ib_num_ports++;
2336
2337         spin_lock_init(&ibdev->sm_lock);
2338         mutex_init(&ibdev->cap_mask_mutex);
2339         INIT_LIST_HEAD(&ibdev->qp_list);
2340         spin_lock_init(&ibdev->reset_flow_resource_lock);
2341
2342         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2343             ib_num_ports) {
2344                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2345                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2346                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2347                                             &ibdev->steer_qpn_base, 0);
2348                 if (err)
2349                         goto err_counter;
2350
2351                 ibdev->ib_uc_qpns_bitmap =
2352                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2353                                 sizeof(long),
2354                                 GFP_KERNEL);
2355                 if (!ibdev->ib_uc_qpns_bitmap) {
2356                         dev_err(&dev->persist->pdev->dev,
2357                                 "bit map alloc failed\n");
2358                         goto err_steer_qp_release;
2359                 }
2360
2361                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2362
2363                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2364                                 dev, ibdev->steer_qpn_base,
2365                                 ibdev->steer_qpn_base +
2366                                 ibdev->steer_qpn_count - 1);
2367                 if (err)
2368                         goto err_steer_free_bitmap;
2369         }
2370
2371         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2372                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2373
2374         if (ib_register_device(&ibdev->ib_dev, NULL))
2375                 goto err_steer_free_bitmap;
2376
2377         if (mlx4_ib_mad_init(ibdev))
2378                 goto err_reg;
2379
2380         if (mlx4_ib_init_sriov(ibdev))
2381                 goto err_mad;
2382
2383         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) {
2384                 if (!iboe->nb.notifier_call) {
2385                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2386                         err = register_netdevice_notifier(&iboe->nb);
2387                         if (err) {
2388                                 iboe->nb.notifier_call = NULL;
2389                                 goto err_notif;
2390                         }
2391                 }
2392         }
2393
2394         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2395                 if (device_create_file(&ibdev->ib_dev.dev,
2396                                        mlx4_class_attributes[j]))
2397                         goto err_notif;
2398         }
2399
2400         ibdev->ib_active = true;
2401
2402         if (mlx4_is_mfunc(ibdev->dev))
2403                 init_pkeys(ibdev);
2404
2405         /* create paravirt contexts for any VFs which are active */
2406         if (mlx4_is_master(ibdev->dev)) {
2407                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2408                         if (j == mlx4_master_func_num(ibdev->dev))
2409                                 continue;
2410                         if (mlx4_is_slave_active(ibdev->dev, j))
2411                                 do_slave_init(ibdev, j, 1);
2412                 }
2413         }
2414         return ibdev;
2415
2416 err_notif:
2417         if (ibdev->iboe.nb.notifier_call) {
2418                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2419                         pr_warn("failure unregistering notifier\n");
2420                 ibdev->iboe.nb.notifier_call = NULL;
2421         }
2422         flush_workqueue(wq);
2423
2424         mlx4_ib_close_sriov(ibdev);
2425
2426 err_mad:
2427         mlx4_ib_mad_cleanup(ibdev);
2428
2429 err_reg:
2430         ib_unregister_device(&ibdev->ib_dev);
2431
2432 err_steer_free_bitmap:
2433         kfree(ibdev->ib_uc_qpns_bitmap);
2434
2435 err_steer_qp_release:
2436         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2437                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2438                                       ibdev->steer_qpn_count);
2439 err_counter:
2440         for (i = 0; i < ibdev->num_ports; ++i) {
2441                 if (ibdev->counters[i].index != -1 &&
2442                     ibdev->counters[i].allocated)
2443                         mlx4_counter_free(ibdev->dev,
2444                                           ibdev->counters[i].index);
2445         }
2446 err_map:
2447         iounmap(ibdev->uar_map);
2448
2449 err_uar:
2450         mlx4_uar_free(dev, &ibdev->priv_uar);
2451
2452 err_pd:
2453         mlx4_pd_free(dev, ibdev->priv_pdn);
2454
2455 err_dealloc:
2456         ib_dealloc_device(&ibdev->ib_dev);
2457
2458         return NULL;
2459 }
2460
2461 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2462 {
2463         int offset;
2464
2465         WARN_ON(!dev->ib_uc_qpns_bitmap);
2466
2467         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2468                                          dev->steer_qpn_count,
2469                                          get_count_order(count));
2470         if (offset < 0)
2471                 return offset;
2472
2473         *qpn = dev->steer_qpn_base + offset;
2474         return 0;
2475 }
2476
2477 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2478 {
2479         if (!qpn ||
2480             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2481                 return;
2482
2483         BUG_ON(qpn < dev->steer_qpn_base);
2484
2485         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2486                               qpn - dev->steer_qpn_base,
2487                               get_count_order(count));
2488 }
2489
2490 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2491                          int is_attach)
2492 {
2493         int err;
2494         size_t flow_size;
2495         struct ib_flow_attr *flow = NULL;
2496         struct ib_flow_spec_ib *ib_spec;
2497
2498         if (is_attach) {
2499                 flow_size = sizeof(struct ib_flow_attr) +
2500                             sizeof(struct ib_flow_spec_ib);
2501                 flow = kzalloc(flow_size, GFP_KERNEL);
2502                 if (!flow)
2503                         return -ENOMEM;
2504                 flow->port = mqp->port;
2505                 flow->num_of_specs = 1;
2506                 flow->size = flow_size;
2507                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2508                 ib_spec->type = IB_FLOW_SPEC_IB;
2509                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2510                 /* Add an empty rule for IB L2 */
2511                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2512
2513                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2514                                             IB_FLOW_DOMAIN_NIC,
2515                                             MLX4_FS_REGULAR,
2516                                             &mqp->reg_id);
2517         } else {
2518                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2519         }
2520         kfree(flow);
2521         return err;
2522 }
2523
2524 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2525 {
2526         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2527         int p;
2528
2529         ibdev->ib_active = false;
2530         flush_workqueue(wq);
2531
2532         mlx4_ib_close_sriov(ibdev);
2533         mlx4_ib_mad_cleanup(ibdev);
2534         ib_unregister_device(&ibdev->ib_dev);
2535         if (ibdev->iboe.nb.notifier_call) {
2536                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2537                         pr_warn("failure unregistering notifier\n");
2538                 ibdev->iboe.nb.notifier_call = NULL;
2539         }
2540
2541         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2542                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2543                                       ibdev->steer_qpn_count);
2544                 kfree(ibdev->ib_uc_qpns_bitmap);
2545         }
2546
2547         iounmap(ibdev->uar_map);
2548         for (p = 0; p < ibdev->num_ports; ++p)
2549                 if (ibdev->counters[p].index != -1 &&
2550                     ibdev->counters[p].allocated)
2551                         mlx4_counter_free(ibdev->dev, ibdev->counters[p].index);
2552         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2553                 mlx4_CLOSE_PORT(dev, p);
2554
2555         mlx4_ib_free_eqs(dev, ibdev);
2556
2557         mlx4_uar_free(dev, &ibdev->priv_uar);
2558         mlx4_pd_free(dev, ibdev->priv_pdn);
2559         ib_dealloc_device(&ibdev->ib_dev);
2560 }
2561
2562 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2563 {
2564         struct mlx4_ib_demux_work **dm = NULL;
2565         struct mlx4_dev *dev = ibdev->dev;
2566         int i;
2567         unsigned long flags;
2568         struct mlx4_active_ports actv_ports;
2569         unsigned int ports;
2570         unsigned int first_port;
2571
2572         if (!mlx4_is_master(dev))
2573                 return;
2574
2575         actv_ports = mlx4_get_active_ports(dev, slave);
2576         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2577         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2578
2579         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
2580         if (!dm) {
2581                 pr_err("failed to allocate memory for tunneling qp update\n");
2582                 return;
2583         }
2584
2585         for (i = 0; i < ports; i++) {
2586                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
2587                 if (!dm[i]) {
2588                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
2589                         while (--i >= 0)
2590                                 kfree(dm[i]);
2591                         goto out;
2592                 }
2593                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
2594                 dm[i]->port = first_port + i + 1;
2595                 dm[i]->slave = slave;
2596                 dm[i]->do_init = do_init;
2597                 dm[i]->dev = ibdev;
2598         }
2599         /* initialize or tear down tunnel QPs for the slave */
2600         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
2601         if (!ibdev->sriov.is_going_down) {
2602                 for (i = 0; i < ports; i++)
2603                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
2604                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2605         } else {
2606                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2607                 for (i = 0; i < ports; i++)
2608                         kfree(dm[i]);
2609         }
2610 out:
2611         kfree(dm);
2612         return;
2613 }
2614
2615 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
2616 {
2617         struct mlx4_ib_qp *mqp;
2618         unsigned long flags_qp;
2619         unsigned long flags_cq;
2620         struct mlx4_ib_cq *send_mcq, *recv_mcq;
2621         struct list_head    cq_notify_list;
2622         struct mlx4_cq *mcq;
2623         unsigned long flags;
2624
2625         pr_warn("mlx4_ib_handle_catas_error was started\n");
2626         INIT_LIST_HEAD(&cq_notify_list);
2627
2628         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
2629         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
2630
2631         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
2632                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
2633                 if (mqp->sq.tail != mqp->sq.head) {
2634                         send_mcq = to_mcq(mqp->ibqp.send_cq);
2635                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
2636                         if (send_mcq->mcq.comp &&
2637                             mqp->ibqp.send_cq->comp_handler) {
2638                                 if (!send_mcq->mcq.reset_notify_added) {
2639                                         send_mcq->mcq.reset_notify_added = 1;
2640                                         list_add_tail(&send_mcq->mcq.reset_notify,
2641                                                       &cq_notify_list);
2642                                 }
2643                         }
2644                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
2645                 }
2646                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
2647                 /* Now, handle the QP's receive queue */
2648                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
2649                 /* no handling is needed for SRQ */
2650                 if (!mqp->ibqp.srq) {
2651                         if (mqp->rq.tail != mqp->rq.head) {
2652                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
2653                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
2654                                 if (recv_mcq->mcq.comp &&
2655                                     mqp->ibqp.recv_cq->comp_handler) {
2656                                         if (!recv_mcq->mcq.reset_notify_added) {
2657                                                 recv_mcq->mcq.reset_notify_added = 1;
2658                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
2659                                                               &cq_notify_list);
2660                                         }
2661                                 }
2662                                 spin_unlock_irqrestore(&recv_mcq->lock,
2663                                                        flags_cq);
2664                         }
2665                 }
2666                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
2667         }
2668
2669         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
2670                 mcq->comp(mcq);
2671         }
2672         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
2673         pr_warn("mlx4_ib_handle_catas_error ended\n");
2674 }
2675
2676 static void handle_bonded_port_state_event(struct work_struct *work)
2677 {
2678         struct ib_event_work *ew =
2679                 container_of(work, struct ib_event_work, work);
2680         struct mlx4_ib_dev *ibdev = ew->ib_dev;
2681         enum ib_port_state bonded_port_state = IB_PORT_NOP;
2682         int i;
2683         struct ib_event ibev;
2684
2685         kfree(ew);
2686         spin_lock_bh(&ibdev->iboe.lock);
2687         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
2688                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
2689                 enum ib_port_state curr_port_state;
2690
2691                 if (!curr_netdev)
2692                         continue;
2693
2694                 curr_port_state =
2695                         (netif_running(curr_netdev) &&
2696                          netif_carrier_ok(curr_netdev)) ?
2697                         IB_PORT_ACTIVE : IB_PORT_DOWN;
2698
2699                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
2700                         curr_port_state : IB_PORT_ACTIVE;
2701         }
2702         spin_unlock_bh(&ibdev->iboe.lock);
2703
2704         ibev.device = &ibdev->ib_dev;
2705         ibev.element.port_num = 1;
2706         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
2707                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2708
2709         ib_dispatch_event(&ibev);
2710 }
2711
2712 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2713                           enum mlx4_dev_event event, unsigned long param)
2714 {
2715         struct ib_event ibev;
2716         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2717         struct mlx4_eqe *eqe = NULL;
2718         struct ib_event_work *ew;
2719         int p = 0;
2720
2721         if (mlx4_is_bonded(dev) &&
2722             ((event == MLX4_DEV_EVENT_PORT_UP) ||
2723             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
2724                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
2725                 if (!ew)
2726                         return;
2727                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
2728                 ew->ib_dev = ibdev;
2729                 queue_work(wq, &ew->work);
2730                 return;
2731         }
2732
2733         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
2734                 eqe = (struct mlx4_eqe *)param;
2735         else
2736                 p = (int) param;
2737
2738         switch (event) {
2739         case MLX4_DEV_EVENT_PORT_UP:
2740                 if (p > ibdev->num_ports)
2741                         return;
2742                 if (mlx4_is_master(dev) &&
2743                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
2744                         IB_LINK_LAYER_INFINIBAND) {
2745                         mlx4_ib_invalidate_all_guid_record(ibdev, p);
2746                 }
2747                 ibev.event = IB_EVENT_PORT_ACTIVE;
2748                 break;
2749
2750         case MLX4_DEV_EVENT_PORT_DOWN:
2751                 if (p > ibdev->num_ports)
2752                         return;
2753                 ibev.event = IB_EVENT_PORT_ERR;
2754                 break;
2755
2756         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2757                 ibdev->ib_active = false;
2758                 ibev.event = IB_EVENT_DEVICE_FATAL;
2759                 mlx4_ib_handle_catas_error(ibdev);
2760                 break;
2761
2762         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
2763                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
2764                 if (!ew) {
2765                         pr_err("failed to allocate memory for events work\n");
2766                         break;
2767                 }
2768
2769                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
2770                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
2771                 ew->ib_dev = ibdev;
2772                 /* need to queue only for port owner, which uses GEN_EQE */
2773                 if (mlx4_is_master(dev))
2774                         queue_work(wq, &ew->work);
2775                 else
2776                         handle_port_mgmt_change_event(&ew->work);
2777                 return;
2778
2779         case MLX4_DEV_EVENT_SLAVE_INIT:
2780                 /* here, p is the slave id */
2781                 do_slave_init(ibdev, p, 1);
2782                 if (mlx4_is_master(dev)) {
2783                         int i;
2784
2785                         for (i = 1; i <= ibdev->num_ports; i++) {
2786                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
2787                                         == IB_LINK_LAYER_INFINIBAND)
2788                                         mlx4_ib_slave_alias_guid_event(ibdev,
2789                                                                        p, i,
2790                                                                        1);
2791                         }
2792                 }
2793                 return;
2794
2795         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
2796                 if (mlx4_is_master(dev)) {
2797                         int i;
2798
2799                         for (i = 1; i <= ibdev->num_ports; i++) {
2800                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
2801                                         == IB_LINK_LAYER_INFINIBAND)
2802                                         mlx4_ib_slave_alias_guid_event(ibdev,
2803                                                                        p, i,
2804                                                                        0);
2805                         }
2806                 }
2807                 /* here, p is the slave id */
2808                 do_slave_init(ibdev, p, 0);
2809                 return;
2810
2811         default:
2812                 return;
2813         }
2814
2815         ibev.device           = ibdev_ptr;
2816         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
2817
2818         ib_dispatch_event(&ibev);
2819 }
2820
2821 static struct mlx4_interface mlx4_ib_interface = {
2822         .add            = mlx4_ib_add,
2823         .remove         = mlx4_ib_remove,
2824         .event          = mlx4_ib_event,
2825         .protocol       = MLX4_PROT_IB_IPV6,
2826         .flags          = MLX4_INTFF_BONDING
2827 };
2828
2829 static int __init mlx4_ib_init(void)
2830 {
2831         int err;
2832
2833         wq = create_singlethread_workqueue("mlx4_ib");
2834         if (!wq)
2835                 return -ENOMEM;
2836
2837         err = mlx4_ib_mcg_init();
2838         if (err)
2839                 goto clean_wq;
2840
2841         err = mlx4_register_interface(&mlx4_ib_interface);
2842         if (err)
2843                 goto clean_mcg;
2844
2845         return 0;
2846
2847 clean_mcg:
2848         mlx4_ib_mcg_destroy();
2849
2850 clean_wq:
2851         destroy_workqueue(wq);
2852         return err;
2853 }
2854
2855 static void __exit mlx4_ib_cleanup(void)
2856 {
2857         mlx4_unregister_interface(&mlx4_ib_interface);
2858         mlx4_ib_mcg_destroy();
2859         destroy_workqueue(wq);
2860 }
2861
2862 module_init(mlx4_ib_init);
2863 module_exit(mlx4_ib_cleanup);