drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <net/ipv6.h>
  43 #include <net/addrconf.h>
  44 #include <net/devlink.h>
  45
  46 #include <rdma/ib_smi.h>
  47 #include <rdma/ib_user_verbs.h>
  48 #include <rdma/ib_addr.h>
  49 #include <rdma/ib_cache.h>
  50
  51 #include <net/bonding.h>
  52
  53 #include <linux/mlx4/driver.h>
  54 #include <linux/mlx4/cmd.h>
  55 #include <linux/mlx4/qp.h>
  56
  57 #include "mlx4_ib.h"
  58 #include <rdma/mlx4-abi.h>
  59
  60 #define DRV_NAME        MLX4_IB_DRV_NAME
  61 #define DRV_VERSION     "2.2-1"
  62 #define DRV_RELDATE     "Feb 2014"
  63
  64 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  65 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  66 #define MLX4_IB_CARD_REV_A0   0xA0
  67
  68 MODULE_AUTHOR("Roland Dreier");
  69 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  70 MODULE_LICENSE("Dual BSD/GPL");
  71 MODULE_VERSION(DRV_VERSION);
  72
  73 int mlx4_ib_sm_guid_assign = 0;
  74 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  75 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  76
  77 static const char mlx4_ib_version[] =
  78         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  79         DRV_VERSION " (" DRV_RELDATE ")\n";
  80
  81 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  82
  83 static struct workqueue_struct *wq;
  84
  85 static void init_query_mad(struct ib_smp *mad)
  86 {
  87         mad->base_version  = 1;
  88         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  89         mad->class_version = 1;
  90         mad->method        = IB_MGMT_METHOD_GET;
  91 }
  92
  93 static int check_flow_steering_support(struct mlx4_dev *dev)
  94 {
  95         int eth_num_ports = 0;
  96         int ib_num_ports = 0;
  97
  98         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
  99
 100         if (dmfs) {
 101                 int i;
 102                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 103                         eth_num_ports++;
 104                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 105                         ib_num_ports++;
 106                 dmfs &= (!ib_num_ports ||
 107                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 108                         (!eth_num_ports ||
 109                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 110                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 111                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 112                         dmfs = 0;
 113                 }
 114         }
 115         return dmfs;
 116 }
 117
 118 static int num_ib_ports(struct mlx4_dev *dev)
 119 {
 120         int ib_ports = 0;
 121         int i;
 122
 123         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 124                 ib_ports++;
 125
 126         return ib_ports;
 127 }
 128
 129 static struct net_device *mlx4_ib_get_netdev(struct ib_device *device, u8 port_num)
 130 {
 131         struct mlx4_ib_dev *ibdev = to_mdev(device);
 132         struct net_device *dev;
 133
 134         rcu_read_lock();
 135         dev = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port_num);
 136
 137         if (dev) {
 138                 if (mlx4_is_bonded(ibdev->dev)) {
 139                         struct net_device *upper = NULL;
 140
 141                         upper = netdev_master_upper_dev_get_rcu(dev);
 142                         if (upper) {
 143                                 struct net_device *active;
 144
 145                                 active = bond_option_active_slave_get_rcu(netdev_priv(upper));
 146                                 if (active)
 147                                         dev = active;
 148                         }
 149                 }
 150         }
 151         if (dev)
 152                 dev_hold(dev);
 153
 154         rcu_read_unlock();
 155         return dev;
 156 }
 157
 158 static int mlx4_ib_update_gids_v1(struct gid_entry *gids,
 159                                   struct mlx4_ib_dev *ibdev,
 160                                   u8 port_num)
 161 {
 162         struct mlx4_cmd_mailbox *mailbox;
 163         int err;
 164         struct mlx4_dev *dev = ibdev->dev;
 165         int i;
 166         union ib_gid *gid_tbl;
 167
 168         mailbox = mlx4_alloc_cmd_mailbox(dev);
 169         if (IS_ERR(mailbox))
 170                 return -ENOMEM;
 171
 172         gid_tbl = mailbox->buf;
 173
 174         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 175                 memcpy(&gid_tbl[i], &gids[i].gid, sizeof(union ib_gid));
 176
 177         err = mlx4_cmd(dev, mailbox->dma,
 178                        MLX4_SET_PORT_GID_TABLE << 8 | port_num,
 179                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 180                        MLX4_CMD_WRAPPED);
 181         if (mlx4_is_bonded(dev))
 182                 err += mlx4_cmd(dev, mailbox->dma,
 183                                 MLX4_SET_PORT_GID_TABLE << 8 | 2,
 184                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 185                                 MLX4_CMD_WRAPPED);
 186
 187         mlx4_free_cmd_mailbox(dev, mailbox);
 188         return err;
 189 }
 190
 191 static int mlx4_ib_update_gids_v1_v2(struct gid_entry *gids,
 192                                      struct mlx4_ib_dev *ibdev,
 193                                      u8 port_num)
 194 {
 195         struct mlx4_cmd_mailbox *mailbox;
 196         int err;
 197         struct mlx4_dev *dev = ibdev->dev;
 198         int i;
 199         struct {
 200                 union ib_gid    gid;
 201                 __be32          rsrvd1[2];
 202                 __be16          rsrvd2;
 203                 u8              type;
 204                 u8              version;
 205                 __be32          rsrvd3;
 206         } *gid_tbl;
 207
 208         mailbox = mlx4_alloc_cmd_mailbox(dev);
 209         if (IS_ERR(mailbox))
 210                 return -ENOMEM;
 211
 212         gid_tbl = mailbox->buf;
 213         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 214                 memcpy(&gid_tbl[i].gid, &gids[i].gid, sizeof(union ib_gid));
 215                 if (gids[i].gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
 216                         gid_tbl[i].version = 2;
 217                         if (!ipv6_addr_v4mapped((struct in6_addr *)&gids[i].gid))
 218                                 gid_tbl[i].type = 1;
 219                         else
 220                                 memset(&gid_tbl[i].gid, 0, 12);
 221                 }
 222         }
 223
 224         err = mlx4_cmd(dev, mailbox->dma,
 225                        MLX4_SET_PORT_ROCE_ADDR << 8 | port_num,
 226                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 227                        MLX4_CMD_WRAPPED);
 228         if (mlx4_is_bonded(dev))
 229                 err += mlx4_cmd(dev, mailbox->dma,
 230                                 MLX4_SET_PORT_ROCE_ADDR << 8 | 2,
 231                                 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 232                                 MLX4_CMD_WRAPPED);
 233
 234         mlx4_free_cmd_mailbox(dev, mailbox);
 235         return err;
 236 }
 237
 238 static int mlx4_ib_update_gids(struct gid_entry *gids,
 239                                struct mlx4_ib_dev *ibdev,
 240                                u8 port_num)
 241 {
 242         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 243                 return mlx4_ib_update_gids_v1_v2(gids, ibdev, port_num);
 244
 245         return mlx4_ib_update_gids_v1(gids, ibdev, port_num);
 246 }
 247
 248 static int mlx4_ib_add_gid(struct ib_device *device,
 249                            u8 port_num,
 250                            unsigned int index,
 251                            const union ib_gid *gid,
 252                            const struct ib_gid_attr *attr,
 253                            void **context)
 254 {
 255         struct mlx4_ib_dev *ibdev = to_mdev(device);
 256         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 257         struct mlx4_port_gid_table   *port_gid_table;
 258         int free = -1, found = -1;
 259         int ret = 0;
 260         int hw_update = 0;
 261         int i;
 262         struct gid_entry *gids = NULL;
 263
 264         if (!rdma_cap_roce_gid_table(device, port_num))
 265                 return -EINVAL;
 266
 267         if (port_num > MLX4_MAX_PORTS)
 268                 return -EINVAL;
 269
 270         if (!context)
 271                 return -EINVAL;
 272
 273         port_gid_table = &iboe->gids[port_num - 1];
 274         spin_lock_bh(&iboe->lock);
 275         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i) {
 276                 if (!memcmp(&port_gid_table->gids[i].gid, gid, sizeof(*gid)) &&
 277                     (port_gid_table->gids[i].gid_type == attr->gid_type))  {
 278                         found = i;
 279                         break;
 280                 }
 281                 if (free < 0 && !memcmp(&port_gid_table->gids[i].gid, &zgid, sizeof(*gid)))
 282                         free = i; /* HW has space */
 283         }
 284
 285         if (found < 0) {
 286                 if (free < 0) {
 287                         ret = -ENOSPC;
 288                 } else {
 289                         port_gid_table->gids[free].ctx = kmalloc(sizeof(*port_gid_table->gids[free].ctx), GFP_ATOMIC);
 290                         if (!port_gid_table->gids[free].ctx) {
 291                                 ret = -ENOMEM;
 292                         } else {
 293                                 *context = port_gid_table->gids[free].ctx;
 294                                 memcpy(&port_gid_table->gids[free].gid, gid, sizeof(*gid));
 295                                 port_gid_table->gids[free].gid_type = attr->gid_type;
 296                                 port_gid_table->gids[free].ctx->real_index = free;
 297                                 port_gid_table->gids[free].ctx->refcount = 1;
 298                                 hw_update = 1;
 299                         }
 300                 }
 301         } else {
 302                 struct gid_cache_context *ctx = port_gid_table->gids[found].ctx;
 303                 *context = ctx;
 304                 ctx->refcount++;
 305         }
 306         if (!ret && hw_update) {
 307                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 308                 if (!gids) {
 309                         ret = -ENOMEM;
 310                 } else {
 311                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++) {
 312                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 313                                 gids[i].gid_type = port_gid_table->gids[i].gid_type;
 314                         }
 315                 }
 316         }
 317         spin_unlock_bh(&iboe->lock);
 318
 319         if (!ret && hw_update) {
 320                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 321                 kfree(gids);
 322         }
 323
 324         return ret;
 325 }
 326
 327 static int mlx4_ib_del_gid(struct ib_device *device,
 328                            u8 port_num,
 329                            unsigned int index,
 330                            void **context)
 331 {
 332         struct gid_cache_context *ctx = *context;
 333         struct mlx4_ib_dev *ibdev = to_mdev(device);
 334         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 335         struct mlx4_port_gid_table   *port_gid_table;
 336         int ret = 0;
 337         int hw_update = 0;
 338         struct gid_entry *gids = NULL;
 339
 340         if (!rdma_cap_roce_gid_table(device, port_num))
 341                 return -EINVAL;
 342
 343         if (port_num > MLX4_MAX_PORTS)
 344                 return -EINVAL;
 345
 346         port_gid_table = &iboe->gids[port_num - 1];
 347         spin_lock_bh(&iboe->lock);
 348         if (ctx) {
 349                 ctx->refcount--;
 350                 if (!ctx->refcount) {
 351                         unsigned int real_index = ctx->real_index;
 352
 353                         memcpy(&port_gid_table->gids[real_index].gid, &zgid, sizeof(zgid));
 354                         kfree(port_gid_table->gids[real_index].ctx);
 355                         port_gid_table->gids[real_index].ctx = NULL;
 356                         hw_update = 1;
 357                 }
 358         }
 359         if (!ret && hw_update) {
 360                 int i;
 361
 362                 gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
 363                 if (!gids) {
 364                         ret = -ENOMEM;
 365                 } else {
 366                         for (i = 0; i < MLX4_MAX_PORT_GIDS; i++)
 367                                 memcpy(&gids[i].gid, &port_gid_table->gids[i].gid, sizeof(union ib_gid));
 368                 }
 369         }
 370         spin_unlock_bh(&iboe->lock);
 371
 372         if (!ret && hw_update) {
 373                 ret = mlx4_ib_update_gids(gids, ibdev, port_num);
 374                 kfree(gids);
 375         }
 376         return ret;
 377 }
 378
 379 int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
 380                                     u8 port_num, int index)
 381 {
 382         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
 383         struct gid_cache_context *ctx = NULL;
 384         union ib_gid gid;
 385         struct mlx4_port_gid_table   *port_gid_table;
 386         int real_index = -EINVAL;
 387         int i;
 388         int ret;
 389         unsigned long flags;
 390         struct ib_gid_attr attr;
 391
 392         if (port_num > MLX4_MAX_PORTS)
 393                 return -EINVAL;
 394
 395         if (mlx4_is_bonded(ibdev->dev))
 396                 port_num = 1;
 397
 398         if (!rdma_cap_roce_gid_table(&ibdev->ib_dev, port_num))
 399                 return index;
 400
 401         ret = ib_get_cached_gid(&ibdev->ib_dev, port_num, index, &gid, &attr);
 402         if (ret)
 403                 return ret;
 404
 405         if (attr.ndev)
 406                 dev_put(attr.ndev);
 407
 408         if (!memcmp(&gid, &zgid, sizeof(gid)))
 409                 return -EINVAL;
 410
 411         spin_lock_irqsave(&iboe->lock, flags);
 412         port_gid_table = &iboe->gids[port_num - 1];
 413
 414         for (i = 0; i < MLX4_MAX_PORT_GIDS; ++i)
 415                 if (!memcmp(&port_gid_table->gids[i].gid, &gid, sizeof(gid)) &&
 416                     attr.gid_type == port_gid_table->gids[i].gid_type) {
 417                         ctx = port_gid_table->gids[i].ctx;
 418                         break;
 419                 }
 420         if (ctx)
 421                 real_index = ctx->real_index;
 422         spin_unlock_irqrestore(&iboe->lock, flags);
 423         return real_index;
 424 }
 425
 426 static int mlx4_ib_query_device(struct ib_device *ibdev,
 427                                 struct ib_device_attr *props,
 428                                 struct ib_udata *uhw)
 429 {
 430         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 431         struct ib_smp *in_mad  = NULL;
 432         struct ib_smp *out_mad = NULL;
 433         int err = -ENOMEM;
 434         int have_ib_ports;
 435         struct mlx4_uverbs_ex_query_device cmd;
 436         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 437         struct mlx4_clock_params clock_params;
 438
 439         if (uhw->inlen) {
 440                 if (uhw->inlen < sizeof(cmd))
 441                         return -EINVAL;
 442
 443                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 444                 if (err)
 445                         return err;
 446
 447                 if (cmd.comp_mask)
 448                         return -EINVAL;
 449
 450                 if (cmd.reserved)
 451                         return -EINVAL;
 452         }
 453
 454         resp.response_length = offsetof(typeof(resp), response_length) +
 455                 sizeof(resp.response_length);
 456         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 457         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 458         if (!in_mad || !out_mad)
 459                 goto out;
 460
 461         init_query_mad(in_mad);
 462         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 463
 464         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 465                            1, NULL, NULL, in_mad, out_mad);
 466         if (err)
 467                 goto out;
 468
 469         memset(props, 0, sizeof *props);
 470
 471         have_ib_ports = num_ib_ports(dev->dev);
 472
 473         props->fw_ver = dev->dev->caps.fw_ver;
 474         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 475                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 476                 IB_DEVICE_SYS_IMAGE_GUID                |
 477                 IB_DEVICE_RC_RNR_NAK_GEN                |
 478                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 479         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 480                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 481         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 482                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 483         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 484                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 485         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 486                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 487         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 488                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 489         if (dev->dev->caps.max_gso_sz &&
 490             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 491             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 492                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 493         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 494                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 495         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 496             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 497             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 498                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 499         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 500                 props->device_cap_flags |= IB_DEVICE_XRC;
 501         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 502                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 503         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 504                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 505                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 506                 else
 507                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 508         }
 509         if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
 510                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 511
 512         props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
 513
 514         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 515                 0xffffff;
 516         props->vendor_part_id      = dev->dev->persist->pdev->device;
 517         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 518         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 519
 520         props->max_mr_size         = ~0ull;
 521         props->page_size_cap       = dev->dev->caps.page_size_cap;
 522         props->max_qp              = dev->dev->quotas.qp;
 523         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 524         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 525                                          dev->dev->caps.max_rq_sg);
 526         props->max_sge_rd          = MLX4_MAX_SGE_RD;
 527         props->max_cq              = dev->dev->quotas.cq;
 528         props->max_cqe             = dev->dev->caps.max_cqes;
 529         props->max_mr              = dev->dev->quotas.mpt;
 530         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 531         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 532         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 533         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 534         props->max_srq             = dev->dev->quotas.srq;
 535         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 536         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 537         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 538         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 539         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 540                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 541         props->masked_atomic_cap   = props->atomic_cap;
 542         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 543         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 544         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 545         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 546                                            props->max_mcast_grp;
 547         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 548         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 549         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 550
 551         if (!mlx4_is_slave(dev->dev))
 552                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 553
 554         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 555                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 556                 if (!err && !mlx4_is_slave(dev->dev)) {
 557                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 558                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 559                 }
 560         }
 561
 562         if (uhw->outlen) {
 563                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 564                 if (err)
 565                         goto out;
 566         }
 567 out:
 568         kfree(in_mad);
 569         kfree(out_mad);
 570
 571         return err;
 572 }
 573
 574 static enum rdma_link_layer
 575 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 576 {
 577         struct mlx4_dev *dev = to_mdev(device)->dev;
 578
 579         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 580                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 581 }
 582
 583 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 584                               struct ib_port_attr *props, int netw_view)
 585 {
 586         struct ib_smp *in_mad  = NULL;
 587         struct ib_smp *out_mad = NULL;
 588         int ext_active_speed;
 589         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 590         int err = -ENOMEM;
 591
 592         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 593         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 594         if (!in_mad || !out_mad)
 595                 goto out;
 596
 597         init_query_mad(in_mad);
 598         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 599         in_mad->attr_mod = cpu_to_be32(port);
 600
 601         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 602                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 603
 604         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 605                                 in_mad, out_mad);
 606         if (err)
 607                 goto out;
 608
 609
 610         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 611         props->lmc              = out_mad->data[34] & 0x7;
 612         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 613         props->sm_sl            = out_mad->data[36] & 0xf;
 614         props->state            = out_mad->data[32] & 0xf;
 615         props->phys_state       = out_mad->data[33] >> 4;
 616         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 617         if (netw_view)
 618                 props->gid_tbl_len = out_mad->data[50];
 619         else
 620                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 621         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 622         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 623         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 624         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 625         props->active_width     = out_mad->data[31] & 0xf;
 626         props->active_speed     = out_mad->data[35] >> 4;
 627         props->max_mtu          = out_mad->data[41] & 0xf;
 628         props->active_mtu       = out_mad->data[36] >> 4;
 629         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 630         props->max_vl_num       = out_mad->data[37] >> 4;
 631         props->init_type_reply  = out_mad->data[41] >> 4;
 632
 633         /* Check if extended speeds (EDR/FDR/...) are supported */
 634         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 635                 ext_active_speed = out_mad->data[62] >> 4;
 636
 637                 switch (ext_active_speed) {
 638                 case 1:
 639                         props->active_speed = IB_SPEED_FDR;
 640                         break;
 641                 case 2:
 642                         props->active_speed = IB_SPEED_EDR;
 643                         break;
 644                 }
 645         }
 646
 647         /* If reported active speed is QDR, check if is FDR-10 */
 648         if (props->active_speed == IB_SPEED_QDR) {
 649                 init_query_mad(in_mad);
 650                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 651                 in_mad->attr_mod = cpu_to_be32(port);
 652
 653                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 654                                    NULL, NULL, in_mad, out_mad);
 655                 if (err)
 656                         goto out;
 657
 658                 /* Checking LinkSpeedActive for FDR-10 */
 659                 if (out_mad->data[15] & 0x1)
 660                         props->active_speed = IB_SPEED_FDR10;
 661         }
 662
 663         /* Avoid wrong speed value returned by FW if the IB link is down. */
 664         if (props->state == IB_PORT_DOWN)
 665                  props->active_speed = IB_SPEED_SDR;
 666
 667 out:
 668         kfree(in_mad);
 669         kfree(out_mad);
 670         return err;
 671 }
 672
 673 static u8 state_to_phys_state(enum ib_port_state state)
 674 {
 675         return state == IB_PORT_ACTIVE ? 5 : 3;
 676 }
 677
 678 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 679                                struct ib_port_attr *props, int netw_view)
 680 {
 681
 682         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 683         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 684         struct net_device *ndev;
 685         enum ib_mtu tmp;
 686         struct mlx4_cmd_mailbox *mailbox;
 687         int err = 0;
 688         int is_bonded = mlx4_is_bonded(mdev->dev);
 689
 690         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 691         if (IS_ERR(mailbox))
 692                 return PTR_ERR(mailbox);
 693
 694         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 695                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 696                            MLX4_CMD_WRAPPED);
 697         if (err)
 698                 goto out;
 699
 700         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ||
 701                                    (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 702                                            IB_WIDTH_4X : IB_WIDTH_1X;
 703         props->active_speed     =  (((u8 *)mailbox->buf)[5] == 0x20 /*56Gb*/) ?
 704                                            IB_SPEED_FDR : IB_SPEED_QDR;
 705         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 706         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 707         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 708         props->pkey_tbl_len     = 1;
 709         props->max_mtu          = IB_MTU_4096;
 710         props->max_vl_num       = 2;
 711         props->state            = IB_PORT_DOWN;
 712         props->phys_state       = state_to_phys_state(props->state);
 713         props->active_mtu       = IB_MTU_256;
 714         spin_lock_bh(&iboe->lock);
 715         ndev = iboe->netdevs[port - 1];
 716         if (ndev && is_bonded) {
 717                 rcu_read_lock(); /* required to get upper dev */
 718                 ndev = netdev_master_upper_dev_get_rcu(ndev);
 719                 rcu_read_unlock();
 720         }
 721         if (!ndev)
 722                 goto out_unlock;
 723
 724         tmp = iboe_get_mtu(ndev->mtu);
 725         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 726
 727         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 728                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 729         props->phys_state       = state_to_phys_state(props->state);
 730 out_unlock:
 731         spin_unlock_bh(&iboe->lock);
 732 out:
 733         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 734         return err;
 735 }
 736
 737 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 738                          struct ib_port_attr *props, int netw_view)
 739 {
 740         int err;
 741
 742         memset(props, 0, sizeof *props);
 743
 744         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 745                 ib_link_query_port(ibdev, port, props, netw_view) :
 746                                 eth_link_query_port(ibdev, port, props, netw_view);
 747
 748         return err;
 749 }
 750
 751 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 752                               struct ib_port_attr *props)
 753 {
 754         /* returns host view */
 755         return __mlx4_ib_query_port(ibdev, port, props, 0);
 756 }
 757
 758 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 759                         union ib_gid *gid, int netw_view)
 760 {
 761         struct ib_smp *in_mad  = NULL;
 762         struct ib_smp *out_mad = NULL;
 763         int err = -ENOMEM;
 764         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 765         int clear = 0;
 766         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 767
 768         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 769         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 770         if (!in_mad || !out_mad)
 771                 goto out;
 772
 773         init_query_mad(in_mad);
 774         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 775         in_mad->attr_mod = cpu_to_be32(port);
 776
 777         if (mlx4_is_mfunc(dev->dev) && netw_view)
 778                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 779
 780         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 781         if (err)
 782                 goto out;
 783
 784         memcpy(gid->raw, out_mad->data + 8, 8);
 785
 786         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 787                 if (index) {
 788                         /* For any index > 0, return the null guid */
 789                         err = 0;
 790                         clear = 1;
 791                         goto out;
 792                 }
 793         }
 794
 795         init_query_mad(in_mad);
 796         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 797         in_mad->attr_mod = cpu_to_be32(index / 8);
 798
 799         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 800                            NULL, NULL, in_mad, out_mad);
 801         if (err)
 802                 goto out;
 803
 804         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 805
 806 out:
 807         if (clear)
 808                 memset(gid->raw + 8, 0, 8);
 809         kfree(in_mad);
 810         kfree(out_mad);
 811         return err;
 812 }
 813
 814 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 815                              union ib_gid *gid)
 816 {
 817         int ret;
 818
 819         if (rdma_protocol_ib(ibdev, port))
 820                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 821
 822         if (!rdma_protocol_roce(ibdev, port))
 823                 return -ENODEV;
 824
 825         if (!rdma_cap_roce_gid_table(ibdev, port))
 826                 return -ENODEV;
 827
 828         ret = ib_get_cached_gid(ibdev, port, index, gid, NULL);
 829         if (ret == -EAGAIN) {
 830                 memcpy(gid, &zgid, sizeof(*gid));
 831                 return 0;
 832         }
 833
 834         return ret;
 835 }
 836
 837 static int mlx4_ib_query_sl2vl(struct ib_device *ibdev, u8 port, u64 *sl2vl_tbl)
 838 {
 839         union sl2vl_tbl_to_u64 sl2vl64;
 840         struct ib_smp *in_mad  = NULL;
 841         struct ib_smp *out_mad = NULL;
 842         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 843         int err = -ENOMEM;
 844         int jj;
 845
 846         if (mlx4_is_slave(to_mdev(ibdev)->dev)) {
 847                 *sl2vl_tbl = 0;
 848                 return 0;
 849         }
 850
 851         in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
 852         out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
 853         if (!in_mad || !out_mad)
 854                 goto out;
 855
 856         init_query_mad(in_mad);
 857         in_mad->attr_id  = IB_SMP_ATTR_SL_TO_VL_TABLE;
 858         in_mad->attr_mod = 0;
 859
 860         if (mlx4_is_mfunc(to_mdev(ibdev)->dev))
 861                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 862
 863         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 864                            in_mad, out_mad);
 865         if (err)
 866                 goto out;
 867
 868         for (jj = 0; jj < 8; jj++)
 869                 sl2vl64.sl8[jj] = ((struct ib_smp *)out_mad)->data[jj];
 870         *sl2vl_tbl = sl2vl64.sl64;
 871
 872 out:
 873         kfree(in_mad);
 874         kfree(out_mad);
 875         return err;
 876 }
 877
 878 static void mlx4_init_sl2vl_tbl(struct mlx4_ib_dev *mdev)
 879 {
 880         u64 sl2vl;
 881         int i;
 882         int err;
 883
 884         for (i = 1; i <= mdev->dev->caps.num_ports; i++) {
 885                 if (mdev->dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
 886                         continue;
 887                 err = mlx4_ib_query_sl2vl(&mdev->ib_dev, i, &sl2vl);
 888                 if (err) {
 889                         pr_err("Unable to get default sl to vl mapping for port %d.  Using all zeroes (%d)\n",
 890                                i, err);
 891                         sl2vl = 0;
 892                 }
 893                 atomic64_set(&mdev->sl2vl[i - 1], sl2vl);
 894         }
 895 }
 896
 897 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 898                          u16 *pkey, int netw_view)
 899 {
 900         struct ib_smp *in_mad  = NULL;
 901         struct ib_smp *out_mad = NULL;
 902         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 903         int err = -ENOMEM;
 904
 905         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 906         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 907         if (!in_mad || !out_mad)
 908                 goto out;
 909
 910         init_query_mad(in_mad);
 911         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 912         in_mad->attr_mod = cpu_to_be32(index / 32);
 913
 914         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 915                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 916
 917         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 918                            in_mad, out_mad);
 919         if (err)
 920                 goto out;
 921
 922         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 923
 924 out:
 925         kfree(in_mad);
 926         kfree(out_mad);
 927         return err;
 928 }
 929
 930 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 931 {
 932         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 933 }
 934
 935 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 936                                  struct ib_device_modify *props)
 937 {
 938         struct mlx4_cmd_mailbox *mailbox;
 939         unsigned long flags;
 940
 941         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 942                 return -EOPNOTSUPP;
 943
 944         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 945                 return 0;
 946
 947         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 948                 return -EOPNOTSUPP;
 949
 950         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 951         memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 952         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 953
 954         /*
 955          * If possible, pass node desc to FW, so it can generate
 956          * a 144 trap.  If cmd fails, just ignore.
 957          */
 958         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 959         if (IS_ERR(mailbox))
 960                 return 0;
 961
 962         memcpy(mailbox->buf, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
 963         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 964                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 965
 966         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 967
 968         return 0;
 969 }
 970
 971 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 972                             u32 cap_mask)
 973 {
 974         struct mlx4_cmd_mailbox *mailbox;
 975         int err;
 976
 977         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 978         if (IS_ERR(mailbox))
 979                 return PTR_ERR(mailbox);
 980
 981         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 982                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 983                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 984         } else {
 985                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 986                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 987         }
 988
 989         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
 990                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 991                        MLX4_CMD_WRAPPED);
 992
 993         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 994         return err;
 995 }
 996
 997 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 998                                struct ib_port_modify *props)
 999 {
1000         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
1001         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
1002         struct ib_port_attr attr;
1003         u32 cap_mask;
1004         int err;
1005
1006         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
1007          * of whether port link layer is ETH or IB. For ETH ports, qkey
1008          * violations and port capabilities are not meaningful.
1009          */
1010         if (is_eth)
1011                 return 0;
1012
1013         mutex_lock(&mdev->cap_mask_mutex);
1014
1015         err = mlx4_ib_query_port(ibdev, port, &attr);
1016         if (err)
1017                 goto out;
1018
1019         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
1020                 ~props->clr_port_cap_mask;
1021
1022         err = mlx4_ib_SET_PORT(mdev, port,
1023                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
1024                                cap_mask);
1025
1026 out:
1027         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
1028         return err;
1029 }
1030
1031 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
1032                                                   struct ib_udata *udata)
1033 {
1034         struct mlx4_ib_dev *dev = to_mdev(ibdev);
1035         struct mlx4_ib_ucontext *context;
1036         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
1037         struct mlx4_ib_alloc_ucontext_resp resp;
1038         int err;
1039
1040         if (!dev->ib_active)
1041                 return ERR_PTR(-EAGAIN);
1042
1043         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
1044                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
1045                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
1046                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1047         } else {
1048                 resp.dev_caps         = dev->dev->caps.userspace_caps;
1049                 resp.qp_tab_size      = dev->dev->caps.num_qps;
1050                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
1051                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
1052                 resp.cqe_size         = dev->dev->caps.cqe_size;
1053         }
1054
1055         context = kzalloc(sizeof(*context), GFP_KERNEL);
1056         if (!context)
1057                 return ERR_PTR(-ENOMEM);
1058
1059         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
1060         if (err) {
1061                 kfree(context);
1062                 return ERR_PTR(err);
1063         }
1064
1065         INIT_LIST_HEAD(&context->db_page_list);
1066         mutex_init(&context->db_page_mutex);
1067
1068         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
1069                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
1070         else
1071                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
1072
1073         if (err) {
1074                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
1075                 kfree(context);
1076                 return ERR_PTR(-EFAULT);
1077         }
1078
1079         return &context->ibucontext;
1080 }
1081
1082 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
1083 {
1084         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1085
1086         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
1087         kfree(context);
1088
1089         return 0;
1090 }
1091
1092 static void  mlx4_ib_vma_open(struct vm_area_struct *area)
1093 {
1094         /* vma_open is called when a new VMA is created on top of our VMA.
1095          * This is done through either mremap flow or split_vma (usually due
1096          * to mlock, madvise, munmap, etc.). We do not support a clone of the
1097          * vma, as this VMA is strongly hardware related. Therefore we set the
1098          * vm_ops of the newly created/cloned VMA to NULL, to prevent it from
1099          * calling us again and trying to do incorrect actions. We assume that
1100          * the original vma size is exactly a single page that there will be no
1101          * "splitting" operations on.
1102          */
1103         area->vm_ops = NULL;
1104 }
1105
1106 static void  mlx4_ib_vma_close(struct vm_area_struct *area)
1107 {
1108         struct mlx4_ib_vma_private_data *mlx4_ib_vma_priv_data;
1109
1110         /* It's guaranteed that all VMAs opened on a FD are closed before the
1111          * file itself is closed, therefore no sync is needed with the regular
1112          * closing flow. (e.g. mlx4_ib_dealloc_ucontext) However need a sync
1113          * with accessing the vma as part of mlx4_ib_disassociate_ucontext.
1114          * The close operation is usually called under mm->mmap_sem except when
1115          * process is exiting.  The exiting case is handled explicitly as part
1116          * of mlx4_ib_disassociate_ucontext.
1117          */
1118         mlx4_ib_vma_priv_data = (struct mlx4_ib_vma_private_data *)
1119                                 area->vm_private_data;
1120
1121         /* set the vma context pointer to null in the mlx4_ib driver's private
1122          * data to protect against a race condition in mlx4_ib_dissassociate_ucontext().
1123          */
1124         mlx4_ib_vma_priv_data->vma = NULL;
1125 }
1126
1127 static const struct vm_operations_struct mlx4_ib_vm_ops = {
1128         .open = mlx4_ib_vma_open,
1129         .close = mlx4_ib_vma_close
1130 };
1131
1132 static void mlx4_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
1133 {
1134         int i;
1135         int ret = 0;
1136         struct vm_area_struct *vma;
1137         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
1138         struct task_struct *owning_process  = NULL;
1139         struct mm_struct   *owning_mm       = NULL;
1140
1141         owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID);
1142         if (!owning_process)
1143                 return;
1144
1145         owning_mm = get_task_mm(owning_process);
1146         if (!owning_mm) {
1147                 pr_info("no mm, disassociate ucontext is pending task termination\n");
1148                 while (1) {
1149                         /* make sure that task is dead before returning, it may
1150                          * prevent a rare case of module down in parallel to a
1151                          * call to mlx4_ib_vma_close.
1152                          */
1153                         put_task_struct(owning_process);
1154                         msleep(1);
1155                         owning_process = get_pid_task(ibcontext->tgid,
1156                                                       PIDTYPE_PID);
1157                         if (!owning_process ||
1158                             owning_process->state == TASK_DEAD) {
1159                                 pr_info("disassociate ucontext done, task was terminated\n");
1160                                 /* in case task was dead need to release the task struct */
1161                                 if (owning_process)
1162                                         put_task_struct(owning_process);
1163                                 return;
1164                         }
1165                 }
1166         }
1167
1168         /* need to protect from a race on closing the vma as part of
1169          * mlx4_ib_vma_close().
1170          */
1171         down_read(&owning_mm->mmap_sem);
1172         for (i = 0; i < HW_BAR_COUNT; i++) {
1173                 vma = context->hw_bar_info[i].vma;
1174                 if (!vma)
1175                         continue;
1176
1177                 ret = zap_vma_ptes(context->hw_bar_info[i].vma,
1178                                    context->hw_bar_info[i].vma->vm_start,
1179                                    PAGE_SIZE);
1180                 if (ret) {
1181                         pr_err("Error: zap_vma_ptes failed for index=%d, ret=%d\n", i, ret);
1182                         BUG_ON(1);
1183                 }
1184
1185                 /* context going to be destroyed, should not access ops any more */
1186                 context->hw_bar_info[i].vma->vm_ops = NULL;
1187         }
1188
1189         up_read(&owning_mm->mmap_sem);
1190         mmput(owning_mm);
1191         put_task_struct(owning_process);
1192 }
1193
1194 static void mlx4_ib_set_vma_data(struct vm_area_struct *vma,
1195                                  struct mlx4_ib_vma_private_data *vma_private_data)
1196 {
1197         vma_private_data->vma = vma;
1198         vma->vm_private_data = vma_private_data;
1199         vma->vm_ops =  &mlx4_ib_vm_ops;
1200 }
1201
1202 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
1203 {
1204         struct mlx4_ib_dev *dev = to_mdev(context->device);
1205         struct mlx4_ib_ucontext *mucontext = to_mucontext(context);
1206
1207         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
1208                 return -EINVAL;
1209
1210         if (vma->vm_pgoff == 0) {
1211                 /* We prevent double mmaping on same context */
1212                 if (mucontext->hw_bar_info[HW_BAR_DB].vma)
1213                         return -EINVAL;
1214
1215                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1216
1217                 if (io_remap_pfn_range(vma, vma->vm_start,
1218                                        to_mucontext(context)->uar.pfn,
1219                                        PAGE_SIZE, vma->vm_page_prot))
1220                         return -EAGAIN;
1221
1222                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_DB]);
1223
1224         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
1225                 /* We prevent double mmaping on same context */
1226                 if (mucontext->hw_bar_info[HW_BAR_BF].vma)
1227                         return -EINVAL;
1228
1229                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1230
1231                 if (io_remap_pfn_range(vma, vma->vm_start,
1232                                        to_mucontext(context)->uar.pfn +
1233                                        dev->dev->caps.num_uars,
1234                                        PAGE_SIZE, vma->vm_page_prot))
1235                         return -EAGAIN;
1236
1237                 mlx4_ib_set_vma_data(vma, &mucontext->hw_bar_info[HW_BAR_BF]);
1238
1239         } else if (vma->vm_pgoff == 3) {
1240                 struct mlx4_clock_params params;
1241                 int ret;
1242
1243                 /* We prevent double mmaping on same context */
1244                 if (mucontext->hw_bar_info[HW_BAR_CLOCK].vma)
1245                         return -EINVAL;
1246
1247                 ret = mlx4_get_internal_clock_params(dev->dev, &params);
1248
1249                 if (ret)
1250                         return ret;
1251
1252                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1253                 if (io_remap_pfn_range(vma, vma->vm_start,
1254                                        (pci_resource_start(dev->dev->persist->pdev,
1255                                                            params.bar) +
1256                                         params.offset)
1257                                        >> PAGE_SHIFT,
1258                                        PAGE_SIZE, vma->vm_page_prot))
1259                         return -EAGAIN;
1260
1261                 mlx4_ib_set_vma_data(vma,
1262                                      &mucontext->hw_bar_info[HW_BAR_CLOCK]);
1263         } else {
1264                 return -EINVAL;
1265         }
1266
1267         return 0;
1268 }
1269
1270 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
1271                                       struct ib_ucontext *context,
1272                                       struct ib_udata *udata)
1273 {
1274         struct mlx4_ib_pd *pd;
1275         int err;
1276
1277         pd = kmalloc(sizeof *pd, GFP_KERNEL);
1278         if (!pd)
1279                 return ERR_PTR(-ENOMEM);
1280
1281         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
1282         if (err) {
1283                 kfree(pd);
1284                 return ERR_PTR(err);
1285         }
1286
1287         if (context)
1288                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
1289                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
1290                         kfree(pd);
1291                         return ERR_PTR(-EFAULT);
1292                 }
1293
1294         return &pd->ibpd;
1295 }
1296
1297 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
1298 {
1299         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
1300         kfree(pd);
1301
1302         return 0;
1303 }
1304
1305 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
1306                                           struct ib_ucontext *context,
1307                                           struct ib_udata *udata)
1308 {
1309         struct mlx4_ib_xrcd *xrcd;
1310         struct ib_cq_init_attr cq_attr = {};
1311         int err;
1312
1313         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1314                 return ERR_PTR(-ENOSYS);
1315
1316         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
1317         if (!xrcd)
1318                 return ERR_PTR(-ENOMEM);
1319
1320         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
1321         if (err)
1322                 goto err1;
1323
1324         xrcd->pd = ib_alloc_pd(ibdev, 0);
1325         if (IS_ERR(xrcd->pd)) {
1326                 err = PTR_ERR(xrcd->pd);
1327                 goto err2;
1328         }
1329
1330         cq_attr.cqe = 1;
1331         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
1332         if (IS_ERR(xrcd->cq)) {
1333                 err = PTR_ERR(xrcd->cq);
1334                 goto err3;
1335         }
1336
1337         return &xrcd->ibxrcd;
1338
1339 err3:
1340         ib_dealloc_pd(xrcd->pd);
1341 err2:
1342         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
1343 err1:
1344         kfree(xrcd);
1345         return ERR_PTR(err);
1346 }
1347
1348 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1349 {
1350         ib_destroy_cq(to_mxrcd(xrcd)->cq);
1351         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
1352         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
1353         kfree(xrcd);
1354
1355         return 0;
1356 }
1357
1358 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
1359 {
1360         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1361         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1362         struct mlx4_ib_gid_entry *ge;
1363
1364         ge = kzalloc(sizeof *ge, GFP_KERNEL);
1365         if (!ge)
1366                 return -ENOMEM;
1367
1368         ge->gid = *gid;
1369         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
1370                 ge->port = mqp->port;
1371                 ge->added = 1;
1372         }
1373
1374         mutex_lock(&mqp->mutex);
1375         list_add_tail(&ge->list, &mqp->gid_list);
1376         mutex_unlock(&mqp->mutex);
1377
1378         return 0;
1379 }
1380
1381 static void mlx4_ib_delete_counters_table(struct mlx4_ib_dev *ibdev,
1382                                           struct mlx4_ib_counters *ctr_table)
1383 {
1384         struct counter_index *counter, *tmp_count;
1385
1386         mutex_lock(&ctr_table->mutex);
1387         list_for_each_entry_safe(counter, tmp_count, &ctr_table->counters_list,
1388                                  list) {
1389                 if (counter->allocated)
1390                         mlx4_counter_free(ibdev->dev, counter->index);
1391                 list_del(&counter->list);
1392                 kfree(counter);
1393         }
1394         mutex_unlock(&ctr_table->mutex);
1395 }
1396
1397 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
1398                    union ib_gid *gid)
1399 {
1400         struct net_device *ndev;
1401         int ret = 0;
1402
1403         if (!mqp->port)
1404                 return 0;
1405
1406         spin_lock_bh(&mdev->iboe.lock);
1407         ndev = mdev->iboe.netdevs[mqp->port - 1];
1408         if (ndev)
1409                 dev_hold(ndev);
1410         spin_unlock_bh(&mdev->iboe.lock);
1411
1412         if (ndev) {
1413                 ret = 1;
1414                 dev_put(ndev);
1415         }
1416
1417         return ret;
1418 }
1419
1420 struct mlx4_ib_steering {
1421         struct list_head list;
1422         struct mlx4_flow_reg_id reg_id;
1423         union ib_gid gid;
1424 };
1425
1426 #define LAST_ETH_FIELD vlan_tag
1427 #define LAST_IB_FIELD sl
1428 #define LAST_IPV4_FIELD dst_ip
1429 #define LAST_TCP_UDP_FIELD src_port
1430
1431 /* Field is the last supported field */
1432 #define FIELDS_NOT_SUPPORTED(filter, field)\
1433         memchr_inv((void *)&filter.field  +\
1434                    sizeof(filter.field), 0,\
1435                    sizeof(filter) -\
1436                    offsetof(typeof(filter), field) -\
1437                    sizeof(filter.field))
1438
1439 static int parse_flow_attr(struct mlx4_dev *dev,
1440                            u32 qp_num,
1441                            union ib_flow_spec *ib_spec,
1442                            struct _rule_hw *mlx4_spec)
1443 {
1444         enum mlx4_net_trans_rule_id type;
1445
1446         switch (ib_spec->type) {
1447         case IB_FLOW_SPEC_ETH:
1448                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
1449                         return -ENOTSUPP;
1450
1451                 type = MLX4_NET_TRANS_RULE_ID_ETH;
1452                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
1453                        ETH_ALEN);
1454                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
1455                        ETH_ALEN);
1456                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
1457                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
1458                 break;
1459         case IB_FLOW_SPEC_IB:
1460                 if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD))
1461                         return -ENOTSUPP;
1462
1463                 type = MLX4_NET_TRANS_RULE_ID_IB;
1464                 mlx4_spec->ib.l3_qpn =
1465                         cpu_to_be32(qp_num);
1466                 mlx4_spec->ib.qpn_mask =
1467                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
1468                 break;
1469
1470
1471         case IB_FLOW_SPEC_IPV4:
1472                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
1473                         return -ENOTSUPP;
1474
1475                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
1476                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
1477                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
1478                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
1479                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
1480                 break;
1481
1482         case IB_FLOW_SPEC_TCP:
1483         case IB_FLOW_SPEC_UDP:
1484                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD))
1485                         return -ENOTSUPP;
1486
1487                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
1488                                         MLX4_NET_TRANS_RULE_ID_TCP :
1489                                         MLX4_NET_TRANS_RULE_ID_UDP;
1490                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
1491                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
1492                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
1493                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
1494                 break;
1495
1496         default:
1497                 return -EINVAL;
1498         }
1499         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
1500             mlx4_hw_rule_sz(dev, type) < 0)
1501                 return -EINVAL;
1502         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
1503         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
1504         return mlx4_hw_rule_sz(dev, type);
1505 }
1506
1507 struct default_rules {
1508         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1509         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
1510         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
1511         __u8  link_layer;
1512 };
1513 static const struct default_rules default_table[] = {
1514         {
1515                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
1516                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
1517                 .rules_create_list = {IB_FLOW_SPEC_IB},
1518                 .link_layer = IB_LINK_LAYER_INFINIBAND
1519         }
1520 };
1521
1522 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
1523                                          struct ib_flow_attr *flow_attr)
1524 {
1525         int i, j, k;
1526         void *ib_flow;
1527         const struct default_rules *pdefault_rules = default_table;
1528         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
1529
1530         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
1531                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
1532                 memset(&field_types, 0, sizeof(field_types));
1533
1534                 if (link_layer != pdefault_rules->link_layer)
1535                         continue;
1536
1537                 ib_flow = flow_attr + 1;
1538                 /* we assume the specs are sorted */
1539                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1540                      j < flow_attr->num_of_specs; k++) {
1541                         union ib_flow_spec *current_flow =
1542                                 (union ib_flow_spec *)ib_flow;
1543
1544                         /* same layer but different type */
1545                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1546                              (pdefault_rules->mandatory_fields[k] &
1547                               IB_FLOW_SPEC_LAYER_MASK)) &&
1548                             (current_flow->type !=
1549                              pdefault_rules->mandatory_fields[k]))
1550                                 goto out;
1551
1552                         /* same layer, try match next one */
1553                         if (current_flow->type ==
1554                             pdefault_rules->mandatory_fields[k]) {
1555                                 j++;
1556                                 ib_flow +=
1557                                         ((union ib_flow_spec *)ib_flow)->size;
1558                         }
1559                 }
1560
1561                 ib_flow = flow_attr + 1;
1562                 for (j = 0; j < flow_attr->num_of_specs;
1563                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1564                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1565                                 /* same layer and same type */
1566                                 if (((union ib_flow_spec *)ib_flow)->type ==
1567                                     pdefault_rules->mandatory_not_fields[k])
1568                                         goto out;
1569
1570                 return i;
1571         }
1572 out:
1573         return -1;
1574 }
1575
1576 static int __mlx4_ib_create_default_rules(
1577                 struct mlx4_ib_dev *mdev,
1578                 struct ib_qp *qp,
1579                 const struct default_rules *pdefault_rules,
1580                 struct _rule_hw *mlx4_spec) {
1581         int size = 0;
1582         int i;
1583
1584         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1585                 int ret;
1586                 union ib_flow_spec ib_spec;
1587                 switch (pdefault_rules->rules_create_list[i]) {
1588                 case 0:
1589                         /* no rule */
1590                         continue;
1591                 case IB_FLOW_SPEC_IB:
1592                         ib_spec.type = IB_FLOW_SPEC_IB;
1593                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1594
1595                         break;
1596                 default:
1597                         /* invalid rule */
1598                         return -EINVAL;
1599                 }
1600                 /* We must put empty rule, qpn is being ignored */
1601                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1602                                       mlx4_spec);
1603                 if (ret < 0) {
1604                         pr_info("invalid parsing\n");
1605                         return -EINVAL;
1606                 }
1607
1608                 mlx4_spec = (void *)mlx4_spec + ret;
1609                 size += ret;
1610         }
1611         return size;
1612 }
1613
1614 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1615                           int domain,
1616                           enum mlx4_net_trans_promisc_mode flow_type,
1617                           u64 *reg_id)
1618 {
1619         int ret, i;
1620         int size = 0;
1621         void *ib_flow;
1622         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1623         struct mlx4_cmd_mailbox *mailbox;
1624         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1625         int default_flow;
1626
1627         static const u16 __mlx4_domain[] = {
1628                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1629                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1630                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1631                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1632         };
1633
1634         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1635                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1636                 return -EINVAL;
1637         }
1638
1639         if (domain >= IB_FLOW_DOMAIN_NUM) {
1640                 pr_err("Invalid domain value %d\n", domain);
1641                 return -EINVAL;
1642         }
1643
1644         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1645                 return -EINVAL;
1646
1647         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1648         if (IS_ERR(mailbox))
1649                 return PTR_ERR(mailbox);
1650         ctrl = mailbox->buf;
1651
1652         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1653                                  flow_attr->priority);
1654         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1655         ctrl->port = flow_attr->port;
1656         ctrl->qpn = cpu_to_be32(qp->qp_num);
1657
1658         ib_flow = flow_attr + 1;
1659         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1660         /* Add default flows */
1661         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1662         if (default_flow >= 0) {
1663                 ret = __mlx4_ib_create_default_rules(
1664                                 mdev, qp, default_table + default_flow,
1665                                 mailbox->buf + size);
1666                 if (ret < 0) {
1667                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1668                         return -EINVAL;
1669                 }
1670                 size += ret;
1671         }
1672         for (i = 0; i < flow_attr->num_of_specs; i++) {
1673                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1674                                       mailbox->buf + size);
1675                 if (ret < 0) {
1676                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1677                         return -EINVAL;
1678                 }
1679                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1680                 size += ret;
1681         }
1682
1683         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1684                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1685                            MLX4_CMD_WRAPPED);
1686         if (ret == -ENOMEM)
1687                 pr_err("mcg table is full. Fail to register network rule.\n");
1688         else if (ret == -ENXIO)
1689                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1690         else if (ret)
1691                 pr_err("Invalid argument. Fail to register network rule.\n");
1692
1693         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1694         return ret;
1695 }
1696
1697 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1698 {
1699         int err;
1700         err = mlx4_cmd(dev, reg_id, 0, 0,
1701                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1702                        MLX4_CMD_WRAPPED);
1703         if (err)
1704                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1705                        reg_id);
1706         return err;
1707 }
1708
1709 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1710                                     u64 *reg_id)
1711 {
1712         void *ib_flow;
1713         union ib_flow_spec *ib_spec;
1714         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1715         int err = 0;
1716
1717         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1718             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1719                 return 0; /* do nothing */
1720
1721         ib_flow = flow_attr + 1;
1722         ib_spec = (union ib_flow_spec *)ib_flow;
1723
1724         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1725                 return 0; /* do nothing */
1726
1727         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1728                                     flow_attr->port, qp->qp_num,
1729                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1730                                     reg_id);
1731         return err;
1732 }
1733
1734 static int mlx4_ib_add_dont_trap_rule(struct mlx4_dev *dev,
1735                                       struct ib_flow_attr *flow_attr,
1736                                       enum mlx4_net_trans_promisc_mode *type)
1737 {
1738         int err = 0;
1739
1740         if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER) ||
1741             (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) ||
1742             (flow_attr->num_of_specs > 1) || (flow_attr->priority != 0)) {
1743                 return -EOPNOTSUPP;
1744         }
1745
1746         if (flow_attr->num_of_specs == 0) {
1747                 type[0] = MLX4_FS_MC_SNIFFER;
1748                 type[1] = MLX4_FS_UC_SNIFFER;
1749         } else {
1750                 union ib_flow_spec *ib_spec;
1751
1752                 ib_spec = (union ib_flow_spec *)(flow_attr + 1);
1753                 if (ib_spec->type !=  IB_FLOW_SPEC_ETH)
1754                         return -EINVAL;
1755
1756                 /* if all is zero than MC and UC */
1757                 if (is_zero_ether_addr(ib_spec->eth.mask.dst_mac)) {
1758                         type[0] = MLX4_FS_MC_SNIFFER;
1759                         type[1] = MLX4_FS_UC_SNIFFER;
1760                 } else {
1761                         u8 mac[ETH_ALEN] = {ib_spec->eth.mask.dst_mac[0] ^ 0x01,
1762                                             ib_spec->eth.mask.dst_mac[1],
1763                                             ib_spec->eth.mask.dst_mac[2],
1764                                             ib_spec->eth.mask.dst_mac[3],
1765                                             ib_spec->eth.mask.dst_mac[4],
1766                                             ib_spec->eth.mask.dst_mac[5]};
1767
1768                         /* Above xor was only on MC bit, non empty mask is valid
1769                          * only if this bit is set and rest are zero.
1770                          */
1771                         if (!is_zero_ether_addr(&mac[0]))
1772                                 return -EINVAL;
1773
1774                         if (is_multicast_ether_addr(ib_spec->eth.val.dst_mac))
1775                                 type[0] = MLX4_FS_MC_SNIFFER;
1776                         else
1777                                 type[0] = MLX4_FS_UC_SNIFFER;
1778                 }
1779         }
1780
1781         return err;
1782 }
1783
1784 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1785                                     struct ib_flow_attr *flow_attr,
1786                                     int domain)
1787 {
1788         int err = 0, i = 0, j = 0;
1789         struct mlx4_ib_flow *mflow;
1790         enum mlx4_net_trans_promisc_mode type[2];
1791         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1792         int is_bonded = mlx4_is_bonded(dev);
1793
1794         if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
1795                 return ERR_PTR(-EINVAL);
1796
1797         if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
1798             (flow_attr->type != IB_FLOW_ATTR_NORMAL))
1799                 return ERR_PTR(-EOPNOTSUPP);
1800
1801         memset(type, 0, sizeof(type));
1802
1803         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1804         if (!mflow) {
1805                 err = -ENOMEM;
1806                 goto err_free;
1807         }
1808
1809         switch (flow_attr->type) {
1810         case IB_FLOW_ATTR_NORMAL:
1811                 /* If dont trap flag (continue match) is set, under specific
1812                  * condition traffic be replicated to given qp,
1813                  * without stealing it
1814                  */
1815                 if (unlikely(flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)) {
1816                         err = mlx4_ib_add_dont_trap_rule(dev,
1817                                                          flow_attr,
1818                                                          type);
1819                         if (err)
1820                                 goto err_free;
1821                 } else {
1822                         type[0] = MLX4_FS_REGULAR;
1823                 }
1824                 break;
1825
1826         case IB_FLOW_ATTR_ALL_DEFAULT:
1827                 type[0] = MLX4_FS_ALL_DEFAULT;
1828                 break;
1829
1830         case IB_FLOW_ATTR_MC_DEFAULT:
1831                 type[0] = MLX4_FS_MC_DEFAULT;
1832                 break;
1833
1834         case IB_FLOW_ATTR_SNIFFER:
1835                 type[0] = MLX4_FS_MIRROR_RX_PORT;
1836                 type[1] = MLX4_FS_MIRROR_SX_PORT;
1837                 break;
1838
1839         default:
1840                 err = -EINVAL;
1841                 goto err_free;
1842         }
1843
1844         while (i < ARRAY_SIZE(type) && type[i]) {
1845                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1846                                             &mflow->reg_id[i].id);
1847                 if (err)
1848                         goto err_create_flow;
1849                 if (is_bonded) {
1850                         /* Application always sees one port so the mirror rule
1851                          * must be on port #2
1852                          */
1853                         flow_attr->port = 2;
1854                         err = __mlx4_ib_create_flow(qp, flow_attr,
1855                                                     domain, type[j],
1856                                                     &mflow->reg_id[j].mirror);
1857                         flow_attr->port = 1;
1858                         if (err)
1859                                 goto err_create_flow;
1860                         j++;
1861                 }
1862
1863                 i++;
1864         }
1865
1866         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1867                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1868                                                &mflow->reg_id[i].id);
1869                 if (err)
1870                         goto err_create_flow;
1871
1872                 if (is_bonded) {
1873                         flow_attr->port = 2;
1874                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1875                                                        &mflow->reg_id[j].mirror);
1876                         flow_attr->port = 1;
1877                         if (err)
1878                                 goto err_create_flow;
1879                         j++;
1880                 }
1881                 /* function to create mirror rule */
1882                 i++;
1883         }
1884
1885         return &mflow->ibflow;
1886
1887 err_create_flow:
1888         while (i) {
1889                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1890                                              mflow->reg_id[i].id);
1891                 i--;
1892         }
1893
1894         while (j) {
1895                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1896                                              mflow->reg_id[j].mirror);
1897                 j--;
1898         }
1899 err_free:
1900         kfree(mflow);
1901         return ERR_PTR(err);
1902 }
1903
1904 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1905 {
1906         int err, ret = 0;
1907         int i = 0;
1908         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1909         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1910
1911         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1912                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1913                 if (err)
1914                         ret = err;
1915                 if (mflow->reg_id[i].mirror) {
1916                         err = __mlx4_ib_destroy_flow(mdev->dev,
1917                                                      mflow->reg_id[i].mirror);
1918                         if (err)
1919                                 ret = err;
1920                 }
1921                 i++;
1922         }
1923
1924         kfree(mflow);
1925         return ret;
1926 }
1927
1928 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1929 {
1930         int err;
1931         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1932         struct mlx4_dev *dev = mdev->dev;
1933         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1934         struct mlx4_ib_steering *ib_steering = NULL;
1935         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1936         struct mlx4_flow_reg_id reg_id;
1937
1938         if (mdev->dev->caps.steering_mode ==
1939             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1940                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1941                 if (!ib_steering)
1942                         return -ENOMEM;
1943         }
1944
1945         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1946                                     !!(mqp->flags &
1947                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1948                                     prot, &reg_id.id);
1949         if (err) {
1950                 pr_err("multicast attach op failed, err %d\n", err);
1951                 goto err_malloc;
1952         }
1953
1954         reg_id.mirror = 0;
1955         if (mlx4_is_bonded(dev)) {
1956                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1957                                             (mqp->port == 1) ? 2 : 1,
1958                                             !!(mqp->flags &
1959                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1960                                             prot, &reg_id.mirror);
1961                 if (err)
1962                         goto err_add;
1963         }
1964
1965         err = add_gid_entry(ibqp, gid);
1966         if (err)
1967                 goto err_add;
1968
1969         if (ib_steering) {
1970                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1971                 ib_steering->reg_id = reg_id;
1972                 mutex_lock(&mqp->mutex);
1973                 list_add(&ib_steering->list, &mqp->steering_rules);
1974                 mutex_unlock(&mqp->mutex);
1975         }
1976         return 0;
1977
1978 err_add:
1979         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1980                               prot, reg_id.id);
1981         if (reg_id.mirror)
1982                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1983                                       prot, reg_id.mirror);
1984 err_malloc:
1985         kfree(ib_steering);
1986
1987         return err;
1988 }
1989
1990 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1991 {
1992         struct mlx4_ib_gid_entry *ge;
1993         struct mlx4_ib_gid_entry *tmp;
1994         struct mlx4_ib_gid_entry *ret = NULL;
1995
1996         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1997                 if (!memcmp(raw, ge->gid.raw, 16)) {
1998                         ret = ge;
1999                         break;
2000                 }
2001         }
2002
2003         return ret;
2004 }
2005
2006 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
2007 {
2008         int err;
2009         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
2010         struct mlx4_dev *dev = mdev->dev;
2011         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
2012         struct net_device *ndev;
2013         struct mlx4_ib_gid_entry *ge;
2014         struct mlx4_flow_reg_id reg_id = {0, 0};
2015         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
2016
2017         if (mdev->dev->caps.steering_mode ==
2018             MLX4_STEERING_MODE_DEVICE_MANAGED) {
2019                 struct mlx4_ib_steering *ib_steering;
2020
2021                 mutex_lock(&mqp->mutex);
2022                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
2023                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
2024                                 list_del(&ib_steering->list);
2025                                 break;
2026                         }
2027                 }
2028                 mutex_unlock(&mqp->mutex);
2029                 if (&ib_steering->list == &mqp->steering_rules) {
2030                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
2031                         return -EINVAL;
2032                 }
2033                 reg_id = ib_steering->reg_id;
2034                 kfree(ib_steering);
2035         }
2036
2037         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2038                                     prot, reg_id.id);
2039         if (err)
2040                 return err;
2041
2042         if (mlx4_is_bonded(dev)) {
2043                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
2044                                             prot, reg_id.mirror);
2045                 if (err)
2046                         return err;
2047         }
2048
2049         mutex_lock(&mqp->mutex);
2050         ge = find_gid_entry(mqp, gid->raw);
2051         if (ge) {
2052                 spin_lock_bh(&mdev->iboe.lock);
2053                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
2054                 if (ndev)
2055                         dev_hold(ndev);
2056                 spin_unlock_bh(&mdev->iboe.lock);
2057                 if (ndev)
2058                         dev_put(ndev);
2059                 list_del(&ge->list);
2060                 kfree(ge);
2061         } else
2062                 pr_warn("could not find mgid entry\n");
2063
2064         mutex_unlock(&mqp->mutex);
2065
2066         return 0;
2067 }
2068
2069 static int init_node_data(struct mlx4_ib_dev *dev)
2070 {
2071         struct ib_smp *in_mad  = NULL;
2072         struct ib_smp *out_mad = NULL;
2073         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
2074         int err = -ENOMEM;
2075
2076         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
2077         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
2078         if (!in_mad || !out_mad)
2079                 goto out;
2080
2081         init_query_mad(in_mad);
2082         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
2083         if (mlx4_is_master(dev->dev))
2084                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
2085
2086         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2087         if (err)
2088                 goto out;
2089
2090         memcpy(dev->ib_dev.node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
2091
2092         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
2093
2094         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
2095         if (err)
2096                 goto out;
2097
2098         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
2099         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
2100
2101 out:
2102         kfree(in_mad);
2103         kfree(out_mad);
2104         return err;
2105 }
2106
2107 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
2108                         char *buf)
2109 {
2110         struct mlx4_ib_dev *dev =
2111                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2112         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
2113 }
2114
2115 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
2116                         char *buf)
2117 {
2118         struct mlx4_ib_dev *dev =
2119                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2120         return sprintf(buf, "%x\n", dev->dev->rev_id);
2121 }
2122
2123 static ssize_t show_board(struct device *device, struct device_attribute *attr,
2124                           char *buf)
2125 {
2126         struct mlx4_ib_dev *dev =
2127                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
2128         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
2129                        dev->dev->board_id);
2130 }
2131
2132 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
2133 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
2134 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
2135
2136 static struct device_attribute *mlx4_class_attributes[] = {
2137         &dev_attr_hw_rev,
2138         &dev_attr_hca_type,
2139         &dev_attr_board_id
2140 };
2141
2142 struct diag_counter {
2143         const char *name;
2144         u32 offset;
2145 };
2146
2147 #define DIAG_COUNTER(_name, _offset)                    \
2148         { .name = #_name, .offset = _offset }
2149
2150 static const struct diag_counter diag_basic[] = {
2151         DIAG_COUNTER(rq_num_lle, 0x00),
2152         DIAG_COUNTER(sq_num_lle, 0x04),
2153         DIAG_COUNTER(rq_num_lqpoe, 0x08),
2154         DIAG_COUNTER(sq_num_lqpoe, 0x0C),
2155         DIAG_COUNTER(rq_num_lpe, 0x18),
2156         DIAG_COUNTER(sq_num_lpe, 0x1C),
2157         DIAG_COUNTER(rq_num_wrfe, 0x20),
2158         DIAG_COUNTER(sq_num_wrfe, 0x24),
2159         DIAG_COUNTER(sq_num_mwbe, 0x2C),
2160         DIAG_COUNTER(sq_num_bre, 0x34),
2161         DIAG_COUNTER(sq_num_rire, 0x44),
2162         DIAG_COUNTER(rq_num_rire, 0x48),
2163         DIAG_COUNTER(sq_num_rae, 0x4C),
2164         DIAG_COUNTER(rq_num_rae, 0x50),
2165         DIAG_COUNTER(sq_num_roe, 0x54),
2166         DIAG_COUNTER(sq_num_tree, 0x5C),
2167         DIAG_COUNTER(sq_num_rree, 0x64),
2168         DIAG_COUNTER(rq_num_rnr, 0x68),
2169         DIAG_COUNTER(sq_num_rnr, 0x6C),
2170         DIAG_COUNTER(rq_num_oos, 0x100),
2171         DIAG_COUNTER(sq_num_oos, 0x104),
2172 };
2173
2174 static const struct diag_counter diag_ext[] = {
2175         DIAG_COUNTER(rq_num_dup, 0x130),
2176         DIAG_COUNTER(sq_num_to, 0x134),
2177 };
2178
2179 static const struct diag_counter diag_device_only[] = {
2180         DIAG_COUNTER(num_cqovf, 0x1A0),
2181         DIAG_COUNTER(rq_num_udsdprd, 0x118),
2182 };
2183
2184 static struct rdma_hw_stats *mlx4_ib_alloc_hw_stats(struct ib_device *ibdev,
2185                                                     u8 port_num)
2186 {
2187         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2188         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2189
2190         if (!diag[!!port_num].name)
2191                 return NULL;
2192
2193         return rdma_alloc_hw_stats_struct(diag[!!port_num].name,
2194                                           diag[!!port_num].num_counters,
2195                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
2196 }
2197
2198 static int mlx4_ib_get_hw_stats(struct ib_device *ibdev,
2199                                 struct rdma_hw_stats *stats,
2200                                 u8 port, int index)
2201 {
2202         struct mlx4_ib_dev *dev = to_mdev(ibdev);
2203         struct mlx4_ib_diag_counters *diag = dev->diag_counters;
2204         u32 hw_value[ARRAY_SIZE(diag_device_only) +
2205                 ARRAY_SIZE(diag_ext) + ARRAY_SIZE(diag_basic)] = {};
2206         int ret;
2207         int i;
2208
2209         ret = mlx4_query_diag_counters(dev->dev,
2210                                        MLX4_OP_MOD_QUERY_TRANSPORT_CI_ERRORS,
2211                                        diag[!!port].offset, hw_value,
2212                                        diag[!!port].num_counters, port);
2213
2214         if (ret)
2215                 return ret;
2216
2217         for (i = 0; i < diag[!!port].num_counters; i++)
2218                 stats->value[i] = hw_value[i];
2219
2220         return diag[!!port].num_counters;
2221 }
2222
2223 static int __mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev,
2224                                          const char ***name,
2225                                          u32 **offset,
2226                                          u32 *num,
2227                                          bool port)
2228 {
2229         u32 num_counters;
2230
2231         num_counters = ARRAY_SIZE(diag_basic);
2232
2233         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT)
2234                 num_counters += ARRAY_SIZE(diag_ext);
2235
2236         if (!port)
2237                 num_counters += ARRAY_SIZE(diag_device_only);
2238
2239         *name = kcalloc(num_counters, sizeof(**name), GFP_KERNEL);
2240         if (!*name)
2241                 return -ENOMEM;
2242
2243         *offset = kcalloc(num_counters, sizeof(**offset), GFP_KERNEL);
2244         if (!*offset)
2245                 goto err_name;
2246
2247         *num = num_counters;
2248
2249         return 0;
2250
2251 err_name:
2252         kfree(*name);
2253         return -ENOMEM;
2254 }
2255
2256 static void mlx4_ib_fill_diag_counters(struct mlx4_ib_dev *ibdev,
2257                                        const char **name,
2258                                        u32 *offset,
2259                                        bool port)
2260 {
2261         int i;
2262         int j;
2263
2264         for (i = 0, j = 0; i < ARRAY_SIZE(diag_basic); i++, j++) {
2265                 name[i] = diag_basic[i].name;
2266                 offset[i] = diag_basic[i].offset;
2267         }
2268
2269         if (ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT) {
2270                 for (i = 0; i < ARRAY_SIZE(diag_ext); i++, j++) {
2271                         name[j] = diag_ext[i].name;
2272                         offset[j] = diag_ext[i].offset;
2273                 }
2274         }
2275
2276         if (!port) {
2277                 for (i = 0; i < ARRAY_SIZE(diag_device_only); i++, j++) {
2278                         name[j] = diag_device_only[i].name;
2279                         offset[j] = diag_device_only[i].offset;
2280                 }
2281         }
2282 }
2283
2284 static int mlx4_ib_alloc_diag_counters(struct mlx4_ib_dev *ibdev)
2285 {
2286         struct mlx4_ib_diag_counters *diag = ibdev->diag_counters;
2287         int i;
2288         int ret;
2289         bool per_port = !!(ibdev->dev->caps.flags2 &
2290                 MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT);
2291
2292         if (mlx4_is_slave(ibdev->dev))
2293                 return 0;
2294
2295         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2296                 /* i == 1 means we are building port counters */
2297                 if (i && !per_port)
2298                         continue;
2299
2300                 ret = __mlx4_ib_alloc_diag_counters(ibdev, &diag[i].name,
2301                                                     &diag[i].offset,
2302                                                     &diag[i].num_counters, i);
2303                 if (ret)
2304                         goto err_alloc;
2305
2306                 mlx4_ib_fill_diag_counters(ibdev, diag[i].name,
2307                                            diag[i].offset, i);
2308         }
2309
2310         ibdev->ib_dev.get_hw_stats      = mlx4_ib_get_hw_stats;
2311         ibdev->ib_dev.alloc_hw_stats    = mlx4_ib_alloc_hw_stats;
2312
2313         return 0;
2314
2315 err_alloc:
2316         if (i) {
2317                 kfree(diag[i - 1].name);
2318                 kfree(diag[i - 1].offset);
2319         }
2320
2321         return ret;
2322 }
2323
2324 static void mlx4_ib_diag_cleanup(struct mlx4_ib_dev *ibdev)
2325 {
2326         int i;
2327
2328         for (i = 0; i < MLX4_DIAG_COUNTERS_TYPES; i++) {
2329                 kfree(ibdev->diag_counters[i].offset);
2330                 kfree(ibdev->diag_counters[i].name);
2331         }
2332 }
2333
2334 #define MLX4_IB_INVALID_MAC     ((u64)-1)
2335 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
2336                                struct net_device *dev,
2337                                int port)
2338 {
2339         u64 new_smac = 0;
2340         u64 release_mac = MLX4_IB_INVALID_MAC;
2341         struct mlx4_ib_qp *qp;
2342
2343         read_lock(&dev_base_lock);
2344         new_smac = mlx4_mac_to_u64(dev->dev_addr);
2345         read_unlock(&dev_base_lock);
2346
2347         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
2348
2349         /* no need for update QP1 and mac registration in non-SRIOV */
2350         if (!mlx4_is_mfunc(ibdev->dev))
2351                 return;
2352
2353         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
2354         qp = ibdev->qp1_proxy[port - 1];
2355         if (qp) {
2356                 int new_smac_index;
2357                 u64 old_smac;
2358                 struct mlx4_update_qp_params update_params;
2359
2360                 mutex_lock(&qp->mutex);
2361                 old_smac = qp->pri.smac;
2362                 if (new_smac == old_smac)
2363                         goto unlock;
2364
2365                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
2366
2367                 if (new_smac_index < 0)
2368                         goto unlock;
2369
2370                 update_params.smac_index = new_smac_index;
2371                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
2372                                    &update_params)) {
2373                         release_mac = new_smac;
2374                         goto unlock;
2375                 }
2376                 /* if old port was zero, no mac was yet registered for this QP */
2377                 if (qp->pri.smac_port)
2378                         release_mac = old_smac;
2379                 qp->pri.smac = new_smac;
2380                 qp->pri.smac_port = port;
2381                 qp->pri.smac_index = new_smac_index;
2382         }
2383
2384 unlock:
2385         if (release_mac != MLX4_IB_INVALID_MAC)
2386                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
2387         if (qp)
2388                 mutex_unlock(&qp->mutex);
2389         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
2390 }
2391
2392 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
2393                                  struct net_device *dev,
2394                                  unsigned long event)
2395
2396 {
2397         struct mlx4_ib_iboe *iboe;
2398         int update_qps_port = -1;
2399         int port;
2400
2401         ASSERT_RTNL();
2402
2403         iboe = &ibdev->iboe;
2404
2405         spin_lock_bh(&iboe->lock);
2406         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
2407
2408                 iboe->netdevs[port - 1] =
2409                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
2410
2411                 if (dev == iboe->netdevs[port - 1] &&
2412                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
2413                      event == NETDEV_UP || event == NETDEV_CHANGE))
2414                         update_qps_port = port;
2415
2416         }
2417         spin_unlock_bh(&iboe->lock);
2418
2419         if (update_qps_port > 0)
2420                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2421 }
2422
2423 static int mlx4_ib_netdev_event(struct notifier_block *this,
2424                                 unsigned long event, void *ptr)
2425 {
2426         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2427         struct mlx4_ib_dev *ibdev;
2428
2429         if (!net_eq(dev_net(dev), &init_net))
2430                 return NOTIFY_DONE;
2431
2432         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2433         mlx4_ib_scan_netdevs(ibdev, dev, event);
2434
2435         return NOTIFY_DONE;
2436 }
2437
2438 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2439 {
2440         int port;
2441         int slave;
2442         int i;
2443
2444         if (mlx4_is_master(ibdev->dev)) {
2445                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2446                      ++slave) {
2447                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2448                                 for (i = 0;
2449                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2450                                      ++i) {
2451                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2452                                         /* master has the identity virt2phys pkey mapping */
2453                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2454                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2455                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2456                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2457                                 }
2458                         }
2459                 }
2460                 /* initialize pkey cache */
2461                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2462                         for (i = 0;
2463                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2464                              ++i)
2465                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2466                                         (i) ? 0 : 0xFFFF;
2467                 }
2468         }
2469 }
2470
2471 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2472 {
2473         int i, j, eq = 0, total_eqs = 0;
2474
2475         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2476                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2477         if (!ibdev->eq_table)
2478                 return;
2479
2480         for (i = 1; i <= dev->caps.num_ports; i++) {
2481                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2482                      j++, total_eqs++) {
2483                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2484                                 continue;
2485                         ibdev->eq_table[eq] = total_eqs;
2486                         if (!mlx4_assign_eq(dev, i,
2487                                             &ibdev->eq_table[eq]))
2488                                 eq++;
2489                         else
2490                                 ibdev->eq_table[eq] = -1;
2491                 }
2492         }
2493
2494         for (i = eq; i < dev->caps.num_comp_vectors;
2495              ibdev->eq_table[i++] = -1)
2496                 ;
2497
2498         /* Advertise the new number of EQs to clients */
2499         ibdev->ib_dev.num_comp_vectors = eq;
2500 }
2501
2502 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2503 {
2504         int i;
2505         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2506
2507         /* no eqs were allocated */
2508         if (!ibdev->eq_table)
2509                 return;
2510
2511         /* Reset the advertised EQ number */
2512         ibdev->ib_dev.num_comp_vectors = 0;
2513
2514         for (i = 0; i < total_eqs; i++)
2515                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2516
2517         kfree(ibdev->eq_table);
2518         ibdev->eq_table = NULL;
2519 }
2520
2521 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2522                                struct ib_port_immutable *immutable)
2523 {
2524         struct ib_port_attr attr;
2525         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
2526         int err;
2527
2528         err = mlx4_ib_query_port(ibdev, port_num, &attr);
2529         if (err)
2530                 return err;
2531
2532         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2533         immutable->gid_tbl_len = attr.gid_tbl_len;
2534
2535         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
2536                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2537         } else {
2538                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
2539                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2540                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
2541                         immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
2542                                 RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
2543         }
2544
2545         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2546
2547         return 0;
2548 }
2549
2550 static void get_fw_ver_str(struct ib_device *device, char *str,
2551                            size_t str_len)
2552 {
2553         struct mlx4_ib_dev *dev =
2554                 container_of(device, struct mlx4_ib_dev, ib_dev);
2555         snprintf(str, str_len, "%d.%d.%d",
2556                  (int) (dev->dev->caps.fw_ver >> 32),
2557                  (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
2558                  (int) dev->dev->caps.fw_ver & 0xffff);
2559 }
2560
2561 static void *mlx4_ib_add(struct mlx4_dev *dev)
2562 {
2563         struct mlx4_ib_dev *ibdev;
2564         int num_ports = 0;
2565         int i, j;
2566         int err;
2567         struct mlx4_ib_iboe *iboe;
2568         int ib_num_ports = 0;
2569         int num_req_counters;
2570         int allocated;
2571         u32 counter_index;
2572         struct counter_index *new_counter_index = NULL;
2573
2574         pr_info_once("%s", mlx4_ib_version);
2575
2576         num_ports = 0;
2577         mlx4_foreach_ib_transport_port(i, dev)
2578                 num_ports++;
2579
2580         /* No point in registering a device with no ports... */
2581         if (num_ports == 0)
2582                 return NULL;
2583
2584         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2585         if (!ibdev) {
2586                 dev_err(&dev->persist->pdev->dev,
2587                         "Device struct alloc failed\n");
2588                 return NULL;
2589         }
2590
2591         iboe = &ibdev->iboe;
2592
2593         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2594                 goto err_dealloc;
2595
2596         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2597                 goto err_pd;
2598
2599         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2600                                  PAGE_SIZE);
2601         if (!ibdev->uar_map)
2602                 goto err_uar;
2603         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2604
2605         ibdev->dev = dev;
2606         ibdev->bond_next_port   = 0;
2607
2608         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2609         ibdev->ib_dev.owner             = THIS_MODULE;
2610         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2611         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2612         ibdev->num_ports                = num_ports;
2613         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2614                                                 1 : ibdev->num_ports;
2615         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2616         ibdev->ib_dev.dma_device        = &dev->persist->pdev->dev;
2617         ibdev->ib_dev.get_netdev        = mlx4_ib_get_netdev;
2618         ibdev->ib_dev.add_gid           = mlx4_ib_add_gid;
2619         ibdev->ib_dev.del_gid           = mlx4_ib_del_gid;
2620
2621         if (dev->caps.userspace_caps)
2622                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2623         else
2624                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2625
2626         ibdev->ib_dev.uverbs_cmd_mask   =
2627                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2628                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2629                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2630                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2631                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2632                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2633                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2634                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2635                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2636                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2637                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2638                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2639                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2640                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2641                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2642                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2643                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2644                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2645                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2646                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2647                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2648                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2649                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2650                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2651
2652         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2653         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2654         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2655         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2656         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2657         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2658         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2659         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2660         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2661         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2662         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2663         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2664         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2665         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2666         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2667         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2668         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2669         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2670         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2671         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2672         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2673         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2674         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2675         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2676         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2677         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2678         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2679         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2680         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2681         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2682         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2683         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2684         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2685         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2686         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2687         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2688         ibdev->ib_dev.alloc_mr          = mlx4_ib_alloc_mr;
2689         ibdev->ib_dev.map_mr_sg         = mlx4_ib_map_mr_sg;
2690         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2691         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2692         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2693         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2694         ibdev->ib_dev.get_dev_fw_str    = get_fw_ver_str;
2695         ibdev->ib_dev.disassociate_ucontext = mlx4_ib_disassociate_ucontext;
2696
2697         if (!mlx4_is_slave(ibdev->dev)) {
2698                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2699                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2700                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2701                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2702         }
2703
2704         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2705             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2706                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2707                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2708
2709                 ibdev->ib_dev.uverbs_cmd_mask |=
2710                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2711                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2712         }
2713
2714         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2715                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2716                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2717                 ibdev->ib_dev.uverbs_cmd_mask |=
2718                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2719                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2720         }
2721
2722         if (check_flow_steering_support(dev)) {
2723                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2724                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2725                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2726
2727                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2728                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2729                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2730         }
2731
2732         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2733                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2734                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
2735                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
2736
2737         mlx4_ib_alloc_eqs(dev, ibdev);
2738
2739         spin_lock_init(&iboe->lock);
2740
2741         if (init_node_data(ibdev))
2742                 goto err_map;
2743         mlx4_init_sl2vl_tbl(ibdev);
2744
2745         for (i = 0; i < ibdev->num_ports; ++i) {
2746                 mutex_init(&ibdev->counters_table[i].mutex);
2747                 INIT_LIST_HEAD(&ibdev->counters_table[i].counters_list);
2748         }
2749
2750         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2751         for (i = 0; i < num_req_counters; ++i) {
2752                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2753                 allocated = 0;
2754                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2755                                                 IB_LINK_LAYER_ETHERNET) {
2756                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2757                         /* if failed to allocate a new counter, use default */
2758                         if (err)
2759                                 counter_index =
2760                                         mlx4_get_default_counter_index(dev,
2761                                                                        i + 1);
2762                         else
2763                                 allocated = 1;
2764                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2765                         counter_index = mlx4_get_default_counter_index(dev,
2766                                                                        i + 1);
2767                 }
2768                 new_counter_index = kmalloc(sizeof(*new_counter_index),
2769                                             GFP_KERNEL);
2770                 if (!new_counter_index) {
2771                         if (allocated)
2772                                 mlx4_counter_free(ibdev->dev, counter_index);
2773                         goto err_counter;
2774                 }
2775                 new_counter_index->index = counter_index;
2776                 new_counter_index->allocated = allocated;
2777                 list_add_tail(&new_counter_index->list,
2778                               &ibdev->counters_table[i].counters_list);
2779                 ibdev->counters_table[i].default_counter = counter_index;
2780                 pr_info("counter index %d for port %d allocated %d\n",
2781                         counter_index, i + 1, allocated);
2782         }
2783         if (mlx4_is_bonded(dev))
2784                 for (i = 1; i < ibdev->num_ports ; ++i) {
2785                         new_counter_index =
2786                                         kmalloc(sizeof(struct counter_index),
2787                                                 GFP_KERNEL);
2788                         if (!new_counter_index)
2789                                 goto err_counter;
2790                         new_counter_index->index = counter_index;
2791                         new_counter_index->allocated = 0;
2792                         list_add_tail(&new_counter_index->list,
2793                                       &ibdev->counters_table[i].counters_list);
2794                         ibdev->counters_table[i].default_counter =
2795                                                                 counter_index;
2796                 }
2797
2798         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2799                 ib_num_ports++;
2800
2801         spin_lock_init(&ibdev->sm_lock);
2802         mutex_init(&ibdev->cap_mask_mutex);
2803         INIT_LIST_HEAD(&ibdev->qp_list);
2804         spin_lock_init(&ibdev->reset_flow_resource_lock);
2805
2806         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2807             ib_num_ports) {
2808                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2809                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2810                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2811                                             &ibdev->steer_qpn_base, 0);
2812                 if (err)
2813                         goto err_counter;
2814
2815                 ibdev->ib_uc_qpns_bitmap =
2816                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2817                                 sizeof(long),
2818                                 GFP_KERNEL);
2819                 if (!ibdev->ib_uc_qpns_bitmap) {
2820                         dev_err(&dev->persist->pdev->dev,
2821                                 "bit map alloc failed\n");
2822                         goto err_steer_qp_release;
2823                 }
2824
2825                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
2826                         bitmap_zero(ibdev->ib_uc_qpns_bitmap,
2827                                     ibdev->steer_qpn_count);
2828                         err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2829                                         dev, ibdev->steer_qpn_base,
2830                                         ibdev->steer_qpn_base +
2831                                         ibdev->steer_qpn_count - 1);
2832                         if (err)
2833                                 goto err_steer_free_bitmap;
2834                 } else {
2835                         bitmap_fill(ibdev->ib_uc_qpns_bitmap,
2836                                     ibdev->steer_qpn_count);
2837                 }
2838         }
2839
2840         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2841                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2842
2843         if (mlx4_ib_alloc_diag_counters(ibdev))
2844                 goto err_steer_free_bitmap;
2845
2846         if (ib_register_device(&ibdev->ib_dev, NULL))
2847                 goto err_diag_counters;
2848
2849         if (mlx4_ib_mad_init(ibdev))
2850                 goto err_reg;
2851
2852         if (mlx4_ib_init_sriov(ibdev))
2853                 goto err_mad;
2854
2855         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE ||
2856             dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2857                 if (!iboe->nb.notifier_call) {
2858                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2859                         err = register_netdevice_notifier(&iboe->nb);
2860                         if (err) {
2861                                 iboe->nb.notifier_call = NULL;
2862                                 goto err_notif;
2863                         }
2864                 }
2865                 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
2866                         err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
2867                         if (err) {
2868                                 goto err_notif;
2869                         }
2870                 }
2871         }
2872
2873         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2874                 if (device_create_file(&ibdev->ib_dev.dev,
2875                                        mlx4_class_attributes[j]))
2876                         goto err_notif;
2877         }
2878
2879         ibdev->ib_active = true;
2880         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2881                 devlink_port_type_ib_set(mlx4_get_devlink_port(dev, i),
2882                                          &ibdev->ib_dev);
2883
2884         if (mlx4_is_mfunc(ibdev->dev))
2885                 init_pkeys(ibdev);
2886
2887         /* create paravirt contexts for any VFs which are active */
2888         if (mlx4_is_master(ibdev->dev)) {
2889                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2890                         if (j == mlx4_master_func_num(ibdev->dev))
2891                                 continue;
2892                         if (mlx4_is_slave_active(ibdev->dev, j))
2893                                 do_slave_init(ibdev, j, 1);
2894                 }
2895         }
2896         return ibdev;
2897
2898 err_notif:
2899         if (ibdev->iboe.nb.notifier_call) {
2900                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2901                         pr_warn("failure unregistering notifier\n");
2902                 ibdev->iboe.nb.notifier_call = NULL;
2903         }
2904         flush_workqueue(wq);
2905
2906         mlx4_ib_close_sriov(ibdev);
2907
2908 err_mad:
2909         mlx4_ib_mad_cleanup(ibdev);
2910
2911 err_reg:
2912         ib_unregister_device(&ibdev->ib_dev);
2913
2914 err_diag_counters:
2915         mlx4_ib_diag_cleanup(ibdev);
2916
2917 err_steer_free_bitmap:
2918         kfree(ibdev->ib_uc_qpns_bitmap);
2919
2920 err_steer_qp_release:
2921         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2922                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2923                                       ibdev->steer_qpn_count);
2924 err_counter:
2925         for (i = 0; i < ibdev->num_ports; ++i)
2926                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
2927
2928 err_map:
2929         mlx4_ib_free_eqs(dev, ibdev);
2930         iounmap(ibdev->uar_map);
2931
2932 err_uar:
2933         mlx4_uar_free(dev, &ibdev->priv_uar);
2934
2935 err_pd:
2936         mlx4_pd_free(dev, ibdev->priv_pdn);
2937
2938 err_dealloc:
2939         ib_dealloc_device(&ibdev->ib_dev);
2940
2941         return NULL;
2942 }
2943
2944 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2945 {
2946         int offset;
2947
2948         WARN_ON(!dev->ib_uc_qpns_bitmap);
2949
2950         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2951                                          dev->steer_qpn_count,
2952                                          get_count_order(count));
2953         if (offset < 0)
2954                 return offset;
2955
2956         *qpn = dev->steer_qpn_base + offset;
2957         return 0;
2958 }
2959
2960 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2961 {
2962         if (!qpn ||
2963             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2964                 return;
2965
2966         BUG_ON(qpn < dev->steer_qpn_base);
2967
2968         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2969                               qpn - dev->steer_qpn_base,
2970                               get_count_order(count));
2971 }
2972
2973 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2974                          int is_attach)
2975 {
2976         int err;
2977         size_t flow_size;
2978         struct ib_flow_attr *flow = NULL;
2979         struct ib_flow_spec_ib *ib_spec;
2980
2981         if (is_attach) {
2982                 flow_size = sizeof(struct ib_flow_attr) +
2983                             sizeof(struct ib_flow_spec_ib);
2984                 flow = kzalloc(flow_size, GFP_KERNEL);
2985                 if (!flow)
2986                         return -ENOMEM;
2987                 flow->port = mqp->port;
2988                 flow->num_of_specs = 1;
2989                 flow->size = flow_size;
2990                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2991                 ib_spec->type = IB_FLOW_SPEC_IB;
2992                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2993                 /* Add an empty rule for IB L2 */
2994                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2995
2996                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2997                                             IB_FLOW_DOMAIN_NIC,
2998                                             MLX4_FS_REGULAR,
2999                                             &mqp->reg_id);
3000         } else {
3001                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
3002         }
3003         kfree(flow);
3004         return err;
3005 }
3006
3007 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
3008 {
3009         struct mlx4_ib_dev *ibdev = ibdev_ptr;
3010         int p;
3011         int i;
3012
3013         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
3014                 devlink_port_type_clear(mlx4_get_devlink_port(dev, i));
3015         ibdev->ib_active = false;
3016         flush_workqueue(wq);
3017
3018         mlx4_ib_close_sriov(ibdev);
3019         mlx4_ib_mad_cleanup(ibdev);
3020         ib_unregister_device(&ibdev->ib_dev);
3021         mlx4_ib_diag_cleanup(ibdev);
3022         if (ibdev->iboe.nb.notifier_call) {
3023                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
3024                         pr_warn("failure unregistering notifier\n");
3025                 ibdev->iboe.nb.notifier_call = NULL;
3026         }
3027
3028         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
3029                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
3030                                       ibdev->steer_qpn_count);
3031                 kfree(ibdev->ib_uc_qpns_bitmap);
3032         }
3033
3034         iounmap(ibdev->uar_map);
3035         for (p = 0; p < ibdev->num_ports; ++p)
3036                 mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[p]);
3037
3038         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
3039                 mlx4_CLOSE_PORT(dev, p);
3040
3041         mlx4_ib_free_eqs(dev, ibdev);
3042
3043         mlx4_uar_free(dev, &ibdev->priv_uar);
3044         mlx4_pd_free(dev, ibdev->priv_pdn);
3045         ib_dealloc_device(&ibdev->ib_dev);
3046 }
3047
3048 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
3049 {
3050         struct mlx4_ib_demux_work **dm = NULL;
3051         struct mlx4_dev *dev = ibdev->dev;
3052         int i;
3053         unsigned long flags;
3054         struct mlx4_active_ports actv_ports;
3055         unsigned int ports;
3056         unsigned int first_port;
3057
3058         if (!mlx4_is_master(dev))
3059                 return;
3060
3061         actv_ports = mlx4_get_active_ports(dev, slave);
3062         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
3063         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
3064
3065         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
3066         if (!dm) {
3067                 pr_err("failed to allocate memory for tunneling qp update\n");
3068                 return;
3069         }
3070
3071         for (i = 0; i < ports; i++) {
3072                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
3073                 if (!dm[i]) {
3074                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
3075                         while (--i >= 0)
3076                                 kfree(dm[i]);
3077                         goto out;
3078                 }
3079                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
3080                 dm[i]->port = first_port + i + 1;
3081                 dm[i]->slave = slave;
3082                 dm[i]->do_init = do_init;
3083                 dm[i]->dev = ibdev;
3084         }
3085         /* initialize or tear down tunnel QPs for the slave */
3086         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
3087         if (!ibdev->sriov.is_going_down) {
3088                 for (i = 0; i < ports; i++)
3089                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
3090                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3091         } else {
3092                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
3093                 for (i = 0; i < ports; i++)
3094                         kfree(dm[i]);
3095         }
3096 out:
3097         kfree(dm);
3098         return;
3099 }
3100
3101 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
3102 {
3103         struct mlx4_ib_qp *mqp;
3104         unsigned long flags_qp;
3105         unsigned long flags_cq;
3106         struct mlx4_ib_cq *send_mcq, *recv_mcq;
3107         struct list_head    cq_notify_list;
3108         struct mlx4_cq *mcq;
3109         unsigned long flags;
3110
3111         pr_warn("mlx4_ib_handle_catas_error was started\n");
3112         INIT_LIST_HEAD(&cq_notify_list);
3113
3114         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
3115         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
3116
3117         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
3118                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
3119                 if (mqp->sq.tail != mqp->sq.head) {
3120                         send_mcq = to_mcq(mqp->ibqp.send_cq);
3121                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
3122                         if (send_mcq->mcq.comp &&
3123                             mqp->ibqp.send_cq->comp_handler) {
3124                                 if (!send_mcq->mcq.reset_notify_added) {
3125                                         send_mcq->mcq.reset_notify_added = 1;
3126                                         list_add_tail(&send_mcq->mcq.reset_notify,
3127                                                       &cq_notify_list);
3128                                 }
3129                         }
3130                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
3131                 }
3132                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
3133                 /* Now, handle the QP's receive queue */
3134                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
3135                 /* no handling is needed for SRQ */
3136                 if (!mqp->ibqp.srq) {
3137                         if (mqp->rq.tail != mqp->rq.head) {
3138                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
3139                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
3140                                 if (recv_mcq->mcq.comp &&
3141                                     mqp->ibqp.recv_cq->comp_handler) {
3142                                         if (!recv_mcq->mcq.reset_notify_added) {
3143                                                 recv_mcq->mcq.reset_notify_added = 1;
3144                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
3145                                                               &cq_notify_list);
3146                                         }
3147                                 }
3148                                 spin_unlock_irqrestore(&recv_mcq->lock,
3149                                                        flags_cq);
3150                         }
3151                 }
3152                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
3153         }
3154
3155         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
3156                 mcq->comp(mcq);
3157         }
3158         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
3159         pr_warn("mlx4_ib_handle_catas_error ended\n");
3160 }
3161
3162 static void handle_bonded_port_state_event(struct work_struct *work)
3163 {
3164         struct ib_event_work *ew =
3165                 container_of(work, struct ib_event_work, work);
3166         struct mlx4_ib_dev *ibdev = ew->ib_dev;
3167         enum ib_port_state bonded_port_state = IB_PORT_NOP;
3168         int i;
3169         struct ib_event ibev;
3170
3171         kfree(ew);
3172         spin_lock_bh(&ibdev->iboe.lock);
3173         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
3174                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
3175                 enum ib_port_state curr_port_state;
3176
3177                 if (!curr_netdev)
3178                         continue;
3179
3180                 curr_port_state =
3181                         (netif_running(curr_netdev) &&
3182                          netif_carrier_ok(curr_netdev)) ?
3183                         IB_PORT_ACTIVE : IB_PORT_DOWN;
3184
3185                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
3186                         curr_port_state : IB_PORT_ACTIVE;
3187         }
3188         spin_unlock_bh(&ibdev->iboe.lock);
3189
3190         ibev.device = &ibdev->ib_dev;
3191         ibev.element.port_num = 1;
3192         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
3193                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3194
3195         ib_dispatch_event(&ibev);
3196 }
3197
3198 void mlx4_ib_sl2vl_update(struct mlx4_ib_dev *mdev, int port)
3199 {
3200         u64 sl2vl;
3201         int err;
3202
3203         err = mlx4_ib_query_sl2vl(&mdev->ib_dev, port, &sl2vl);
3204         if (err) {
3205                 pr_err("Unable to get current sl to vl mapping for port %d.  Using all zeroes (%d)\n",
3206                        port, err);
3207                 sl2vl = 0;
3208         }
3209         atomic64_set(&mdev->sl2vl[port - 1], sl2vl);
3210 }
3211
3212 static void ib_sl2vl_update_work(struct work_struct *work)
3213 {
3214         struct ib_event_work *ew = container_of(work, struct ib_event_work, work);
3215         struct mlx4_ib_dev *mdev = ew->ib_dev;
3216         int port = ew->port;
3217
3218         mlx4_ib_sl2vl_update(mdev, port);
3219
3220         kfree(ew);
3221 }
3222
3223 void mlx4_sched_ib_sl2vl_update_work(struct mlx4_ib_dev *ibdev,
3224                                      int port)
3225 {
3226         struct ib_event_work *ew;
3227
3228         ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3229         if (ew) {
3230                 INIT_WORK(&ew->work, ib_sl2vl_update_work);
3231                 ew->port = port;
3232                 ew->ib_dev = ibdev;
3233                 queue_work(wq, &ew->work);
3234         } else {
3235                 pr_err("failed to allocate memory for sl2vl update work\n");
3236         }
3237 }
3238
3239 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
3240                           enum mlx4_dev_event event, unsigned long param)
3241 {
3242         struct ib_event ibev;
3243         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
3244         struct mlx4_eqe *eqe = NULL;
3245         struct ib_event_work *ew;
3246         int p = 0;
3247
3248         if (mlx4_is_bonded(dev) &&
3249             ((event == MLX4_DEV_EVENT_PORT_UP) ||
3250             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
3251                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
3252                 if (!ew)
3253                         return;
3254                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
3255                 ew->ib_dev = ibdev;
3256                 queue_work(wq, &ew->work);
3257                 return;
3258         }
3259
3260         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
3261                 eqe = (struct mlx4_eqe *)param;
3262         else
3263                 p = (int) param;
3264
3265         switch (event) {
3266         case MLX4_DEV_EVENT_PORT_UP:
3267                 if (p > ibdev->num_ports)
3268                         return;
3269                 if (!mlx4_is_slave(dev) &&
3270                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
3271                         IB_LINK_LAYER_INFINIBAND) {
3272                         if (mlx4_is_master(dev))
3273                                 mlx4_ib_invalidate_all_guid_record(ibdev, p);
3274                         if (ibdev->dev->flags & MLX4_FLAG_SECURE_HOST &&
3275                             !(ibdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT))
3276                                 mlx4_sched_ib_sl2vl_update_work(ibdev, p);
3277                 }
3278                 ibev.event = IB_EVENT_PORT_ACTIVE;
3279                 break;
3280
3281         case MLX4_DEV_EVENT_PORT_DOWN:
3282                 if (p > ibdev->num_ports)
3283                         return;
3284                 ibev.event = IB_EVENT_PORT_ERR;
3285                 break;
3286
3287         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3288                 ibdev->ib_active = false;
3289                 ibev.event = IB_EVENT_DEVICE_FATAL;
3290                 mlx4_ib_handle_catas_error(ibdev);
3291                 break;
3292
3293         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
3294                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
3295                 if (!ew) {
3296                         pr_err("failed to allocate memory for events work\n");
3297                         break;
3298                 }
3299
3300                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
3301                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
3302                 ew->ib_dev = ibdev;
3303                 /* need to queue only for port owner, which uses GEN_EQE */
3304                 if (mlx4_is_master(dev))
3305                         queue_work(wq, &ew->work);
3306                 else
3307                         handle_port_mgmt_change_event(&ew->work);
3308                 return;
3309
3310         case MLX4_DEV_EVENT_SLAVE_INIT:
3311                 /* here, p is the slave id */
3312                 do_slave_init(ibdev, p, 1);
3313                 if (mlx4_is_master(dev)) {
3314                         int i;
3315
3316                         for (i = 1; i <= ibdev->num_ports; i++) {
3317                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3318                                         == IB_LINK_LAYER_INFINIBAND)
3319                                         mlx4_ib_slave_alias_guid_event(ibdev,
3320                                                                        p, i,
3321                                                                        1);
3322                         }
3323                 }
3324                 return;
3325
3326         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
3327                 if (mlx4_is_master(dev)) {
3328                         int i;
3329
3330                         for (i = 1; i <= ibdev->num_ports; i++) {
3331                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
3332                                         == IB_LINK_LAYER_INFINIBAND)
3333                                         mlx4_ib_slave_alias_guid_event(ibdev,
3334                                                                        p, i,
3335                                                                        0);
3336                         }
3337                 }
3338                 /* here, p is the slave id */
3339                 do_slave_init(ibdev, p, 0);
3340                 return;
3341
3342         default:
3343                 return;
3344         }
3345
3346         ibev.device           = ibdev_ptr;
3347         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
3348
3349         ib_dispatch_event(&ibev);
3350 }
3351
3352 static struct mlx4_interface mlx4_ib_interface = {
3353         .add            = mlx4_ib_add,
3354         .remove         = mlx4_ib_remove,
3355         .event          = mlx4_ib_event,
3356         .protocol       = MLX4_PROT_IB_IPV6,
3357         .flags          = MLX4_INTFF_BONDING
3358 };
3359
3360 static int __init mlx4_ib_init(void)
3361 {
3362         int err;
3363
3364         wq = alloc_ordered_workqueue("mlx4_ib", WQ_MEM_RECLAIM);
3365         if (!wq)
3366                 return -ENOMEM;
3367
3368         err = mlx4_ib_mcg_init();
3369         if (err)
3370                 goto clean_wq;
3371
3372         err = mlx4_register_interface(&mlx4_ib_interface);
3373         if (err)
3374                 goto clean_mcg;
3375
3376         return 0;
3377
3378 clean_mcg:
3379         mlx4_ib_mcg_destroy();
3380
3381 clean_wq:
3382         destroy_workqueue(wq);
3383         return err;
3384 }
3385
3386 static void __exit mlx4_ib_cleanup(void)
3387 {
3388         mlx4_unregister_interface(&mlx4_ib_interface);
3389         mlx4_ib_mcg_destroy();
3390         destroy_workqueue(wq);
3391 }
3392
3393 module_init(mlx4_ib_init);
3394 module_exit(mlx4_ib_cleanup);