drivers/infiniband/hw/mlx4/main.c

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/inetdevice.h>
  40 #include <linux/rtnetlink.h>
  41 #include <linux/if_vlan.h>
  42 #include <net/ipv6.h>
  43 #include <net/addrconf.h>
  44
  45 #include <rdma/ib_smi.h>
  46 #include <rdma/ib_user_verbs.h>
  47 #include <rdma/ib_addr.h>
  48
  49 #include <linux/mlx4/driver.h>
  50 #include <linux/mlx4/cmd.h>
  51 #include <linux/mlx4/qp.h>
  52
  53 #include "mlx4_ib.h"
  54 #include "user.h"
  55
  56 #define DRV_NAME        MLX4_IB_DRV_NAME
  57 #define DRV_VERSION     "2.2-1"
  58 #define DRV_RELDATE     "Feb 2014"
  59
  60 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
  61 #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF
  62 #define MLX4_IB_CARD_REV_A0   0xA0
  63
  64 MODULE_AUTHOR("Roland Dreier");
  65 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  66 MODULE_LICENSE("Dual BSD/GPL");
  67 MODULE_VERSION(DRV_VERSION);
  68
  69 int mlx4_ib_sm_guid_assign = 0;
  70 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  71 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)");
  72
  73 static const char mlx4_ib_version[] =
  74         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  75         DRV_VERSION " (" DRV_RELDATE ")\n";
  76
  77 struct update_gid_work {
  78         struct work_struct      work;
  79         union ib_gid            gids[128];
  80         struct mlx4_ib_dev     *dev;
  81         int                     port;
  82 };
  83
  84 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  85
  86 static struct workqueue_struct *wq;
  87
  88 static void init_query_mad(struct ib_smp *mad)
  89 {
  90         mad->base_version  = 1;
  91         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  92         mad->class_version = 1;
  93         mad->method        = IB_MGMT_METHOD_GET;
  94 }
  95
  96 static union ib_gid zgid;
  97
  98 static int check_flow_steering_support(struct mlx4_dev *dev)
  99 {
 100         int eth_num_ports = 0;
 101         int ib_num_ports = 0;
 102
 103         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
 104
 105         if (dmfs) {
 106                 int i;
 107                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 108                         eth_num_ports++;
 109                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 110                         ib_num_ports++;
 111                 dmfs &= (!ib_num_ports ||
 112                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 113                         (!eth_num_ports ||
 114                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 115                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 116                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 117                         dmfs = 0;
 118                 }
 119         }
 120         return dmfs;
 121 }
 122
 123 static int num_ib_ports(struct mlx4_dev *dev)
 124 {
 125         int ib_ports = 0;
 126         int i;
 127
 128         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 129                 ib_ports++;
 130
 131         return ib_ports;
 132 }
 133
 134 static int mlx4_ib_query_device(struct ib_device *ibdev,
 135                                 struct ib_device_attr *props,
 136                                 struct ib_udata *uhw)
 137 {
 138         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 139         struct ib_smp *in_mad  = NULL;
 140         struct ib_smp *out_mad = NULL;
 141         int err = -ENOMEM;
 142         int have_ib_ports;
 143         struct mlx4_uverbs_ex_query_device cmd;
 144         struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
 145         struct mlx4_clock_params clock_params;
 146
 147         if (uhw->inlen) {
 148                 if (uhw->inlen < sizeof(cmd))
 149                         return -EINVAL;
 150
 151                 err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
 152                 if (err)
 153                         return err;
 154
 155                 if (cmd.comp_mask)
 156                         return -EINVAL;
 157
 158                 if (cmd.reserved)
 159                         return -EINVAL;
 160         }
 161
 162         resp.response_length = offsetof(typeof(resp), response_length) +
 163                 sizeof(resp.response_length);
 164         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 165         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 166         if (!in_mad || !out_mad)
 167                 goto out;
 168
 169         init_query_mad(in_mad);
 170         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 171
 172         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 173                            1, NULL, NULL, in_mad, out_mad);
 174         if (err)
 175                 goto out;
 176
 177         memset(props, 0, sizeof *props);
 178
 179         have_ib_ports = num_ib_ports(dev->dev);
 180
 181         props->fw_ver = dev->dev->caps.fw_ver;
 182         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 183                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 184                 IB_DEVICE_SYS_IMAGE_GUID                |
 185                 IB_DEVICE_RC_RNR_NAK_GEN                |
 186                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 187         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 188                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 189         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 190                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 191         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports)
 192                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 193         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 194                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 195         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 196                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 197         if (dev->dev->caps.max_gso_sz &&
 198             (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) &&
 199             (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH))
 200                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 201         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 202                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 203         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 204             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 205             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 206                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 207         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 208                 props->device_cap_flags |= IB_DEVICE_XRC;
 209         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 210                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 211         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 212                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 213                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 214                 else
 215                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 216         if (dev->steering_support ==  MLX4_STEERING_MODE_DEVICE_MANAGED)
 217                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 218         }
 219
 220         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 221                 0xffffff;
 222         props->vendor_part_id      = dev->dev->persist->pdev->device;
 223         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 224         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 225
 226         props->max_mr_size         = ~0ull;
 227         props->page_size_cap       = dev->dev->caps.page_size_cap;
 228         props->max_qp              = dev->dev->quotas.qp;
 229         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 230         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 231                                          dev->dev->caps.max_rq_sg);
 232         props->max_cq              = dev->dev->quotas.cq;
 233         props->max_cqe             = dev->dev->caps.max_cqes;
 234         props->max_mr              = dev->dev->quotas.mpt;
 235         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 236         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 237         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 238         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 239         props->max_srq             = dev->dev->quotas.srq;
 240         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 241         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 242         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 243         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 244         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 245                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 246         props->masked_atomic_cap   = props->atomic_cap;
 247         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 248         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 249         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 250         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 251                                            props->max_mcast_grp;
 252         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 253         props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
 254         props->timestamp_mask = 0xFFFFFFFFFFFFULL;
 255
 256         if (!mlx4_is_slave(dev->dev))
 257                 err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
 258
 259         if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
 260                 resp.response_length += sizeof(resp.hca_core_clock_offset);
 261                 if (!err && !mlx4_is_slave(dev->dev)) {
 262                         resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
 263                         resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
 264                 }
 265         }
 266
 267         if (uhw->outlen) {
 268                 err = ib_copy_to_udata(uhw, &resp, resp.response_length);
 269                 if (err)
 270                         goto out;
 271         }
 272 out:
 273         kfree(in_mad);
 274         kfree(out_mad);
 275
 276         return err;
 277 }
 278
 279 static enum rdma_link_layer
 280 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 281 {
 282         struct mlx4_dev *dev = to_mdev(device)->dev;
 283
 284         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 285                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 286 }
 287
 288 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 289                               struct ib_port_attr *props, int netw_view)
 290 {
 291         struct ib_smp *in_mad  = NULL;
 292         struct ib_smp *out_mad = NULL;
 293         int ext_active_speed;
 294         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 295         int err = -ENOMEM;
 296
 297         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 298         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 299         if (!in_mad || !out_mad)
 300                 goto out;
 301
 302         init_query_mad(in_mad);
 303         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 304         in_mad->attr_mod = cpu_to_be32(port);
 305
 306         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 307                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 308
 309         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 310                                 in_mad, out_mad);
 311         if (err)
 312                 goto out;
 313
 314
 315         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 316         props->lmc              = out_mad->data[34] & 0x7;
 317         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 318         props->sm_sl            = out_mad->data[36] & 0xf;
 319         props->state            = out_mad->data[32] & 0xf;
 320         props->phys_state       = out_mad->data[33] >> 4;
 321         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 322         if (netw_view)
 323                 props->gid_tbl_len = out_mad->data[50];
 324         else
 325                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 326         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 327         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 328         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 329         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 330         props->active_width     = out_mad->data[31] & 0xf;
 331         props->active_speed     = out_mad->data[35] >> 4;
 332         props->max_mtu          = out_mad->data[41] & 0xf;
 333         props->active_mtu       = out_mad->data[36] >> 4;
 334         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 335         props->max_vl_num       = out_mad->data[37] >> 4;
 336         props->init_type_reply  = out_mad->data[41] >> 4;
 337
 338         /* Check if extended speeds (EDR/FDR/...) are supported */
 339         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 340                 ext_active_speed = out_mad->data[62] >> 4;
 341
 342                 switch (ext_active_speed) {
 343                 case 1:
 344                         props->active_speed = IB_SPEED_FDR;
 345                         break;
 346                 case 2:
 347                         props->active_speed = IB_SPEED_EDR;
 348                         break;
 349                 }
 350         }
 351
 352         /* If reported active speed is QDR, check if is FDR-10 */
 353         if (props->active_speed == IB_SPEED_QDR) {
 354                 init_query_mad(in_mad);
 355                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 356                 in_mad->attr_mod = cpu_to_be32(port);
 357
 358                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 359                                    NULL, NULL, in_mad, out_mad);
 360                 if (err)
 361                         goto out;
 362
 363                 /* Checking LinkSpeedActive for FDR-10 */
 364                 if (out_mad->data[15] & 0x1)
 365                         props->active_speed = IB_SPEED_FDR10;
 366         }
 367
 368         /* Avoid wrong speed value returned by FW if the IB link is down. */
 369         if (props->state == IB_PORT_DOWN)
 370                  props->active_speed = IB_SPEED_SDR;
 371
 372 out:
 373         kfree(in_mad);
 374         kfree(out_mad);
 375         return err;
 376 }
 377
 378 static u8 state_to_phys_state(enum ib_port_state state)
 379 {
 380         return state == IB_PORT_ACTIVE ? 5 : 3;
 381 }
 382
 383 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 384                                struct ib_port_attr *props, int netw_view)
 385 {
 386
 387         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 388         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 389         struct net_device *ndev;
 390         enum ib_mtu tmp;
 391         struct mlx4_cmd_mailbox *mailbox;
 392         int err = 0;
 393         int is_bonded = mlx4_is_bonded(mdev->dev);
 394
 395         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 396         if (IS_ERR(mailbox))
 397                 return PTR_ERR(mailbox);
 398
 399         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 400                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 401                            MLX4_CMD_WRAPPED);
 402         if (err)
 403                 goto out;
 404
 405         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ?
 406                                                 IB_WIDTH_4X : IB_WIDTH_1X;
 407         props->active_speed     = IB_SPEED_QDR;
 408         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 409         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 410         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 411         props->pkey_tbl_len     = 1;
 412         props->max_mtu          = IB_MTU_4096;
 413         props->max_vl_num       = 2;
 414         props->state            = IB_PORT_DOWN;
 415         props->phys_state       = state_to_phys_state(props->state);
 416         props->active_mtu       = IB_MTU_256;
 417         if (is_bonded)
 418                 rtnl_lock(); /* required to get upper dev */
 419         spin_lock_bh(&iboe->lock);
 420         ndev = iboe->netdevs[port - 1];
 421         if (ndev && is_bonded)
 422                 ndev = netdev_master_upper_dev_get(ndev);
 423         if (!ndev)
 424                 goto out_unlock;
 425
 426         tmp = iboe_get_mtu(ndev->mtu);
 427         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 428
 429         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 430                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 431         props->phys_state       = state_to_phys_state(props->state);
 432 out_unlock:
 433         spin_unlock_bh(&iboe->lock);
 434         if (is_bonded)
 435                 rtnl_unlock();
 436 out:
 437         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 438         return err;
 439 }
 440
 441 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 442                          struct ib_port_attr *props, int netw_view)
 443 {
 444         int err;
 445
 446         memset(props, 0, sizeof *props);
 447
 448         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 449                 ib_link_query_port(ibdev, port, props, netw_view) :
 450                                 eth_link_query_port(ibdev, port, props, netw_view);
 451
 452         return err;
 453 }
 454
 455 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 456                               struct ib_port_attr *props)
 457 {
 458         /* returns host view */
 459         return __mlx4_ib_query_port(ibdev, port, props, 0);
 460 }
 461
 462 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 463                         union ib_gid *gid, int netw_view)
 464 {
 465         struct ib_smp *in_mad  = NULL;
 466         struct ib_smp *out_mad = NULL;
 467         int err = -ENOMEM;
 468         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 469         int clear = 0;
 470         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 471
 472         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 473         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 474         if (!in_mad || !out_mad)
 475                 goto out;
 476
 477         init_query_mad(in_mad);
 478         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 479         in_mad->attr_mod = cpu_to_be32(port);
 480
 481         if (mlx4_is_mfunc(dev->dev) && netw_view)
 482                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 483
 484         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 485         if (err)
 486                 goto out;
 487
 488         memcpy(gid->raw, out_mad->data + 8, 8);
 489
 490         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 491                 if (index) {
 492                         /* For any index > 0, return the null guid */
 493                         err = 0;
 494                         clear = 1;
 495                         goto out;
 496                 }
 497         }
 498
 499         init_query_mad(in_mad);
 500         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 501         in_mad->attr_mod = cpu_to_be32(index / 8);
 502
 503         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 504                            NULL, NULL, in_mad, out_mad);
 505         if (err)
 506                 goto out;
 507
 508         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 509
 510 out:
 511         if (clear)
 512                 memset(gid->raw + 8, 0, 8);
 513         kfree(in_mad);
 514         kfree(out_mad);
 515         return err;
 516 }
 517
 518 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
 519                           union ib_gid *gid)
 520 {
 521         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 522
 523         *gid = dev->iboe.gid_table[port - 1][index];
 524
 525         return 0;
 526 }
 527
 528 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 529                              union ib_gid *gid)
 530 {
 531         if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
 532                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 533         else
 534                 return iboe_query_gid(ibdev, port, index, gid);
 535 }
 536
 537 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 538                          u16 *pkey, int netw_view)
 539 {
 540         struct ib_smp *in_mad  = NULL;
 541         struct ib_smp *out_mad = NULL;
 542         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 543         int err = -ENOMEM;
 544
 545         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 546         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 547         if (!in_mad || !out_mad)
 548                 goto out;
 549
 550         init_query_mad(in_mad);
 551         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 552         in_mad->attr_mod = cpu_to_be32(index / 32);
 553
 554         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 555                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 556
 557         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 558                            in_mad, out_mad);
 559         if (err)
 560                 goto out;
 561
 562         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 563
 564 out:
 565         kfree(in_mad);
 566         kfree(out_mad);
 567         return err;
 568 }
 569
 570 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 571 {
 572         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 573 }
 574
 575 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 576                                  struct ib_device_modify *props)
 577 {
 578         struct mlx4_cmd_mailbox *mailbox;
 579         unsigned long flags;
 580
 581         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 582                 return -EOPNOTSUPP;
 583
 584         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 585                 return 0;
 586
 587         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 588                 return -EOPNOTSUPP;
 589
 590         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 591         memcpy(ibdev->node_desc, props->node_desc, 64);
 592         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 593
 594         /*
 595          * If possible, pass node desc to FW, so it can generate
 596          * a 144 trap.  If cmd fails, just ignore.
 597          */
 598         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 599         if (IS_ERR(mailbox))
 600                 return 0;
 601
 602         memcpy(mailbox->buf, props->node_desc, 64);
 603         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 604                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 605
 606         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 607
 608         return 0;
 609 }
 610
 611 static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 612                             u32 cap_mask)
 613 {
 614         struct mlx4_cmd_mailbox *mailbox;
 615         int err;
 616
 617         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 618         if (IS_ERR(mailbox))
 619                 return PTR_ERR(mailbox);
 620
 621         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 622                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 623                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 624         } else {
 625                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 626                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 627         }
 628
 629         err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE,
 630                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 631                        MLX4_CMD_WRAPPED);
 632
 633         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 634         return err;
 635 }
 636
 637 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 638                                struct ib_port_modify *props)
 639 {
 640         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 641         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 642         struct ib_port_attr attr;
 643         u32 cap_mask;
 644         int err;
 645
 646         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
 647          * of whether port link layer is ETH or IB. For ETH ports, qkey
 648          * violations and port capabilities are not meaningful.
 649          */
 650         if (is_eth)
 651                 return 0;
 652
 653         mutex_lock(&mdev->cap_mask_mutex);
 654
 655         err = mlx4_ib_query_port(ibdev, port, &attr);
 656         if (err)
 657                 goto out;
 658
 659         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 660                 ~props->clr_port_cap_mask;
 661
 662         err = mlx4_ib_SET_PORT(mdev, port,
 663                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
 664                                cap_mask);
 665
 666 out:
 667         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 668         return err;
 669 }
 670
 671 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 672                                                   struct ib_udata *udata)
 673 {
 674         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 675         struct mlx4_ib_ucontext *context;
 676         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
 677         struct mlx4_ib_alloc_ucontext_resp resp;
 678         int err;
 679
 680         if (!dev->ib_active)
 681                 return ERR_PTR(-EAGAIN);
 682
 683         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
 684                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
 685                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
 686                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 687         } else {
 688                 resp.dev_caps         = dev->dev->caps.userspace_caps;
 689                 resp.qp_tab_size      = dev->dev->caps.num_qps;
 690                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 691                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 692                 resp.cqe_size         = dev->dev->caps.cqe_size;
 693         }
 694
 695         context = kmalloc(sizeof *context, GFP_KERNEL);
 696         if (!context)
 697                 return ERR_PTR(-ENOMEM);
 698
 699         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 700         if (err) {
 701                 kfree(context);
 702                 return ERR_PTR(err);
 703         }
 704
 705         INIT_LIST_HEAD(&context->db_page_list);
 706         mutex_init(&context->db_page_mutex);
 707
 708         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
 709                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
 710         else
 711                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
 712
 713         if (err) {
 714                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 715                 kfree(context);
 716                 return ERR_PTR(-EFAULT);
 717         }
 718
 719         return &context->ibucontext;
 720 }
 721
 722 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 723 {
 724         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 725
 726         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 727         kfree(context);
 728
 729         return 0;
 730 }
 731
 732 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 733 {
 734         struct mlx4_ib_dev *dev = to_mdev(context->device);
 735
 736         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 737                 return -EINVAL;
 738
 739         if (vma->vm_pgoff == 0) {
 740                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 741
 742                 if (io_remap_pfn_range(vma, vma->vm_start,
 743                                        to_mucontext(context)->uar.pfn,
 744                                        PAGE_SIZE, vma->vm_page_prot))
 745                         return -EAGAIN;
 746         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 747                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 748
 749                 if (io_remap_pfn_range(vma, vma->vm_start,
 750                                        to_mucontext(context)->uar.pfn +
 751                                        dev->dev->caps.num_uars,
 752                                        PAGE_SIZE, vma->vm_page_prot))
 753                         return -EAGAIN;
 754         } else if (vma->vm_pgoff == 3) {
 755                 struct mlx4_clock_params params;
 756                 int ret = mlx4_get_internal_clock_params(dev->dev, &params);
 757
 758                 if (ret)
 759                         return ret;
 760
 761                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 762                 if (io_remap_pfn_range(vma, vma->vm_start,
 763                                        (pci_resource_start(dev->dev->persist->pdev,
 764                                                            params.bar) +
 765                                         params.offset)
 766                                        >> PAGE_SHIFT,
 767                                        PAGE_SIZE, vma->vm_page_prot))
 768                         return -EAGAIN;
 769         } else {
 770                 return -EINVAL;
 771         }
 772
 773         return 0;
 774 }
 775
 776 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 777                                       struct ib_ucontext *context,
 778                                       struct ib_udata *udata)
 779 {
 780         struct mlx4_ib_pd *pd;
 781         int err;
 782
 783         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 784         if (!pd)
 785                 return ERR_PTR(-ENOMEM);
 786
 787         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 788         if (err) {
 789                 kfree(pd);
 790                 return ERR_PTR(err);
 791         }
 792
 793         if (context)
 794                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 795                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 796                         kfree(pd);
 797                         return ERR_PTR(-EFAULT);
 798                 }
 799
 800         return &pd->ibpd;
 801 }
 802
 803 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 804 {
 805         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 806         kfree(pd);
 807
 808         return 0;
 809 }
 810
 811 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
 812                                           struct ib_ucontext *context,
 813                                           struct ib_udata *udata)
 814 {
 815         struct mlx4_ib_xrcd *xrcd;
 816         struct ib_cq_init_attr cq_attr = {};
 817         int err;
 818
 819         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
 820                 return ERR_PTR(-ENOSYS);
 821
 822         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
 823         if (!xrcd)
 824                 return ERR_PTR(-ENOMEM);
 825
 826         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
 827         if (err)
 828                 goto err1;
 829
 830         xrcd->pd = ib_alloc_pd(ibdev);
 831         if (IS_ERR(xrcd->pd)) {
 832                 err = PTR_ERR(xrcd->pd);
 833                 goto err2;
 834         }
 835
 836         cq_attr.cqe = 1;
 837         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
 838         if (IS_ERR(xrcd->cq)) {
 839                 err = PTR_ERR(xrcd->cq);
 840                 goto err3;
 841         }
 842
 843         return &xrcd->ibxrcd;
 844
 845 err3:
 846         ib_dealloc_pd(xrcd->pd);
 847 err2:
 848         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
 849 err1:
 850         kfree(xrcd);
 851         return ERR_PTR(err);
 852 }
 853
 854 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
 855 {
 856         ib_destroy_cq(to_mxrcd(xrcd)->cq);
 857         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
 858         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
 859         kfree(xrcd);
 860
 861         return 0;
 862 }
 863
 864 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
 865 {
 866         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 867         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 868         struct mlx4_ib_gid_entry *ge;
 869
 870         ge = kzalloc(sizeof *ge, GFP_KERNEL);
 871         if (!ge)
 872                 return -ENOMEM;
 873
 874         ge->gid = *gid;
 875         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
 876                 ge->port = mqp->port;
 877                 ge->added = 1;
 878         }
 879
 880         mutex_lock(&mqp->mutex);
 881         list_add_tail(&ge->list, &mqp->gid_list);
 882         mutex_unlock(&mqp->mutex);
 883
 884         return 0;
 885 }
 886
 887 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
 888                    union ib_gid *gid)
 889 {
 890         struct net_device *ndev;
 891         int ret = 0;
 892
 893         if (!mqp->port)
 894                 return 0;
 895
 896         spin_lock_bh(&mdev->iboe.lock);
 897         ndev = mdev->iboe.netdevs[mqp->port - 1];
 898         if (ndev)
 899                 dev_hold(ndev);
 900         spin_unlock_bh(&mdev->iboe.lock);
 901
 902         if (ndev) {
 903                 ret = 1;
 904                 dev_put(ndev);
 905         }
 906
 907         return ret;
 908 }
 909
 910 struct mlx4_ib_steering {
 911         struct list_head list;
 912         struct mlx4_flow_reg_id reg_id;
 913         union ib_gid gid;
 914 };
 915
 916 static int parse_flow_attr(struct mlx4_dev *dev,
 917                            u32 qp_num,
 918                            union ib_flow_spec *ib_spec,
 919                            struct _rule_hw *mlx4_spec)
 920 {
 921         enum mlx4_net_trans_rule_id type;
 922
 923         switch (ib_spec->type) {
 924         case IB_FLOW_SPEC_ETH:
 925                 type = MLX4_NET_TRANS_RULE_ID_ETH;
 926                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
 927                        ETH_ALEN);
 928                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
 929                        ETH_ALEN);
 930                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
 931                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
 932                 break;
 933         case IB_FLOW_SPEC_IB:
 934                 type = MLX4_NET_TRANS_RULE_ID_IB;
 935                 mlx4_spec->ib.l3_qpn =
 936                         cpu_to_be32(qp_num);
 937                 mlx4_spec->ib.qpn_mask =
 938                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
 939                 break;
 940
 941
 942         case IB_FLOW_SPEC_IPV4:
 943                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
 944                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
 945                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
 946                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
 947                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
 948                 break;
 949
 950         case IB_FLOW_SPEC_TCP:
 951         case IB_FLOW_SPEC_UDP:
 952                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
 953                                         MLX4_NET_TRANS_RULE_ID_TCP :
 954                                         MLX4_NET_TRANS_RULE_ID_UDP;
 955                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
 956                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
 957                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
 958                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
 959                 break;
 960
 961         default:
 962                 return -EINVAL;
 963         }
 964         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
 965             mlx4_hw_rule_sz(dev, type) < 0)
 966                 return -EINVAL;
 967         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
 968         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
 969         return mlx4_hw_rule_sz(dev, type);
 970 }
 971
 972 struct default_rules {
 973         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
 974         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
 975         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
 976         __u8  link_layer;
 977 };
 978 static const struct default_rules default_table[] = {
 979         {
 980                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
 981                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
 982                 .rules_create_list = {IB_FLOW_SPEC_IB},
 983                 .link_layer = IB_LINK_LAYER_INFINIBAND
 984         }
 985 };
 986
 987 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
 988                                          struct ib_flow_attr *flow_attr)
 989 {
 990         int i, j, k;
 991         void *ib_flow;
 992         const struct default_rules *pdefault_rules = default_table;
 993         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
 994
 995         for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) {
 996                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
 997                 memset(&field_types, 0, sizeof(field_types));
 998
 999                 if (link_layer != pdefault_rules->link_layer)
1000                         continue;
1001
1002                 ib_flow = flow_attr + 1;
1003                 /* we assume the specs are sorted */
1004                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
1005                      j < flow_attr->num_of_specs; k++) {
1006                         union ib_flow_spec *current_flow =
1007                                 (union ib_flow_spec *)ib_flow;
1008
1009                         /* same layer but different type */
1010                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
1011                              (pdefault_rules->mandatory_fields[k] &
1012                               IB_FLOW_SPEC_LAYER_MASK)) &&
1013                             (current_flow->type !=
1014                              pdefault_rules->mandatory_fields[k]))
1015                                 goto out;
1016
1017                         /* same layer, try match next one */
1018                         if (current_flow->type ==
1019                             pdefault_rules->mandatory_fields[k]) {
1020                                 j++;
1021                                 ib_flow +=
1022                                         ((union ib_flow_spec *)ib_flow)->size;
1023                         }
1024                 }
1025
1026                 ib_flow = flow_attr + 1;
1027                 for (j = 0; j < flow_attr->num_of_specs;
1028                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
1029                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
1030                                 /* same layer and same type */
1031                                 if (((union ib_flow_spec *)ib_flow)->type ==
1032                                     pdefault_rules->mandatory_not_fields[k])
1033                                         goto out;
1034
1035                 return i;
1036         }
1037 out:
1038         return -1;
1039 }
1040
1041 static int __mlx4_ib_create_default_rules(
1042                 struct mlx4_ib_dev *mdev,
1043                 struct ib_qp *qp,
1044                 const struct default_rules *pdefault_rules,
1045                 struct _rule_hw *mlx4_spec) {
1046         int size = 0;
1047         int i;
1048
1049         for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
1050                 int ret;
1051                 union ib_flow_spec ib_spec;
1052                 switch (pdefault_rules->rules_create_list[i]) {
1053                 case 0:
1054                         /* no rule */
1055                         continue;
1056                 case IB_FLOW_SPEC_IB:
1057                         ib_spec.type = IB_FLOW_SPEC_IB;
1058                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
1059
1060                         break;
1061                 default:
1062                         /* invalid rule */
1063                         return -EINVAL;
1064                 }
1065                 /* We must put empty rule, qpn is being ignored */
1066                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
1067                                       mlx4_spec);
1068                 if (ret < 0) {
1069                         pr_info("invalid parsing\n");
1070                         return -EINVAL;
1071                 }
1072
1073                 mlx4_spec = (void *)mlx4_spec + ret;
1074                 size += ret;
1075         }
1076         return size;
1077 }
1078
1079 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1080                           int domain,
1081                           enum mlx4_net_trans_promisc_mode flow_type,
1082                           u64 *reg_id)
1083 {
1084         int ret, i;
1085         int size = 0;
1086         void *ib_flow;
1087         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1088         struct mlx4_cmd_mailbox *mailbox;
1089         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1090         int default_flow;
1091
1092         static const u16 __mlx4_domain[] = {
1093                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1094                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1095                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1096                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1097         };
1098
1099         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1100                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1101                 return -EINVAL;
1102         }
1103
1104         if (domain >= IB_FLOW_DOMAIN_NUM) {
1105                 pr_err("Invalid domain value %d\n", domain);
1106                 return -EINVAL;
1107         }
1108
1109         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1110                 return -EINVAL;
1111
1112         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1113         if (IS_ERR(mailbox))
1114                 return PTR_ERR(mailbox);
1115         ctrl = mailbox->buf;
1116
1117         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1118                                  flow_attr->priority);
1119         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1120         ctrl->port = flow_attr->port;
1121         ctrl->qpn = cpu_to_be32(qp->qp_num);
1122
1123         ib_flow = flow_attr + 1;
1124         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1125         /* Add default flows */
1126         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1127         if (default_flow >= 0) {
1128                 ret = __mlx4_ib_create_default_rules(
1129                                 mdev, qp, default_table + default_flow,
1130                                 mailbox->buf + size);
1131                 if (ret < 0) {
1132                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1133                         return -EINVAL;
1134                 }
1135                 size += ret;
1136         }
1137         for (i = 0; i < flow_attr->num_of_specs; i++) {
1138                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1139                                       mailbox->buf + size);
1140                 if (ret < 0) {
1141                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1142                         return -EINVAL;
1143                 }
1144                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1145                 size += ret;
1146         }
1147
1148         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1149                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1150                            MLX4_CMD_WRAPPED);
1151         if (ret == -ENOMEM)
1152                 pr_err("mcg table is full. Fail to register network rule.\n");
1153         else if (ret == -ENXIO)
1154                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1155         else if (ret)
1156                 pr_err("Invalid argumant. Fail to register network rule.\n");
1157
1158         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1159         return ret;
1160 }
1161
1162 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1163 {
1164         int err;
1165         err = mlx4_cmd(dev, reg_id, 0, 0,
1166                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1167                        MLX4_CMD_WRAPPED);
1168         if (err)
1169                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1170                        reg_id);
1171         return err;
1172 }
1173
1174 static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1175                                     u64 *reg_id)
1176 {
1177         void *ib_flow;
1178         union ib_flow_spec *ib_spec;
1179         struct mlx4_dev *dev = to_mdev(qp->device)->dev;
1180         int err = 0;
1181
1182         if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
1183             dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
1184                 return 0; /* do nothing */
1185
1186         ib_flow = flow_attr + 1;
1187         ib_spec = (union ib_flow_spec *)ib_flow;
1188
1189         if (ib_spec->type !=  IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1)
1190                 return 0; /* do nothing */
1191
1192         err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac,
1193                                     flow_attr->port, qp->qp_num,
1194                                     MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff),
1195                                     reg_id);
1196         return err;
1197 }
1198
1199 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1200                                     struct ib_flow_attr *flow_attr,
1201                                     int domain)
1202 {
1203         int err = 0, i = 0, j = 0;
1204         struct mlx4_ib_flow *mflow;
1205         enum mlx4_net_trans_promisc_mode type[2];
1206         struct mlx4_dev *dev = (to_mdev(qp->device))->dev;
1207         int is_bonded = mlx4_is_bonded(dev);
1208
1209         memset(type, 0, sizeof(type));
1210
1211         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1212         if (!mflow) {
1213                 err = -ENOMEM;
1214                 goto err_free;
1215         }
1216
1217         switch (flow_attr->type) {
1218         case IB_FLOW_ATTR_NORMAL:
1219                 type[0] = MLX4_FS_REGULAR;
1220                 break;
1221
1222         case IB_FLOW_ATTR_ALL_DEFAULT:
1223                 type[0] = MLX4_FS_ALL_DEFAULT;
1224                 break;
1225
1226         case IB_FLOW_ATTR_MC_DEFAULT:
1227                 type[0] = MLX4_FS_MC_DEFAULT;
1228                 break;
1229
1230         case IB_FLOW_ATTR_SNIFFER:
1231                 type[0] = MLX4_FS_UC_SNIFFER;
1232                 type[1] = MLX4_FS_MC_SNIFFER;
1233                 break;
1234
1235         default:
1236                 err = -EINVAL;
1237                 goto err_free;
1238         }
1239
1240         while (i < ARRAY_SIZE(type) && type[i]) {
1241                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1242                                             &mflow->reg_id[i].id);
1243                 if (err)
1244                         goto err_create_flow;
1245                 if (is_bonded) {
1246                         /* Application always sees one port so the mirror rule
1247                          * must be on port #2
1248                          */
1249                         flow_attr->port = 2;
1250                         err = __mlx4_ib_create_flow(qp, flow_attr,
1251                                                     domain, type[j],
1252                                                     &mflow->reg_id[j].mirror);
1253                         flow_attr->port = 1;
1254                         if (err)
1255                                 goto err_create_flow;
1256                         j++;
1257                 }
1258
1259                 i++;
1260         }
1261
1262         if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) {
1263                 err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1264                                                &mflow->reg_id[i].id);
1265                 if (err)
1266                         goto err_create_flow;
1267
1268                 if (is_bonded) {
1269                         flow_attr->port = 2;
1270                         err = mlx4_ib_tunnel_steer_add(qp, flow_attr,
1271                                                        &mflow->reg_id[j].mirror);
1272                         flow_attr->port = 1;
1273                         if (err)
1274                                 goto err_create_flow;
1275                         j++;
1276                 }
1277                 /* function to create mirror rule */
1278                 i++;
1279         }
1280
1281         return &mflow->ibflow;
1282
1283 err_create_flow:
1284         while (i) {
1285                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1286                                              mflow->reg_id[i].id);
1287                 i--;
1288         }
1289
1290         while (j) {
1291                 (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev,
1292                                              mflow->reg_id[j].mirror);
1293                 j--;
1294         }
1295 err_free:
1296         kfree(mflow);
1297         return ERR_PTR(err);
1298 }
1299
1300 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1301 {
1302         int err, ret = 0;
1303         int i = 0;
1304         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1305         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1306
1307         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) {
1308                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id);
1309                 if (err)
1310                         ret = err;
1311                 if (mflow->reg_id[i].mirror) {
1312                         err = __mlx4_ib_destroy_flow(mdev->dev,
1313                                                      mflow->reg_id[i].mirror);
1314                         if (err)
1315                                 ret = err;
1316                 }
1317                 i++;
1318         }
1319
1320         kfree(mflow);
1321         return ret;
1322 }
1323
1324 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1325 {
1326         int err;
1327         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1328         struct mlx4_dev *dev = mdev->dev;
1329         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1330         struct mlx4_ib_steering *ib_steering = NULL;
1331         enum mlx4_protocol prot = MLX4_PROT_IB_IPV6;
1332         struct mlx4_flow_reg_id reg_id;
1333
1334         if (mdev->dev->caps.steering_mode ==
1335             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1336                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1337                 if (!ib_steering)
1338                         return -ENOMEM;
1339         }
1340
1341         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1342                                     !!(mqp->flags &
1343                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1344                                     prot, &reg_id.id);
1345         if (err) {
1346                 pr_err("multicast attach op failed, err %d\n", err);
1347                 goto err_malloc;
1348         }
1349
1350         reg_id.mirror = 0;
1351         if (mlx4_is_bonded(dev)) {
1352                 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
1353                                             (mqp->port == 1) ? 2 : 1,
1354                                             !!(mqp->flags &
1355                                             MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1356                                             prot, &reg_id.mirror);
1357                 if (err)
1358                         goto err_add;
1359         }
1360
1361         err = add_gid_entry(ibqp, gid);
1362         if (err)
1363                 goto err_add;
1364
1365         if (ib_steering) {
1366                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1367                 ib_steering->reg_id = reg_id;
1368                 mutex_lock(&mqp->mutex);
1369                 list_add(&ib_steering->list, &mqp->steering_rules);
1370                 mutex_unlock(&mqp->mutex);
1371         }
1372         return 0;
1373
1374 err_add:
1375         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1376                               prot, reg_id.id);
1377         if (reg_id.mirror)
1378                 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1379                                       prot, reg_id.mirror);
1380 err_malloc:
1381         kfree(ib_steering);
1382
1383         return err;
1384 }
1385
1386 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1387 {
1388         struct mlx4_ib_gid_entry *ge;
1389         struct mlx4_ib_gid_entry *tmp;
1390         struct mlx4_ib_gid_entry *ret = NULL;
1391
1392         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1393                 if (!memcmp(raw, ge->gid.raw, 16)) {
1394                         ret = ge;
1395                         break;
1396                 }
1397         }
1398
1399         return ret;
1400 }
1401
1402 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1403 {
1404         int err;
1405         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1406         struct mlx4_dev *dev = mdev->dev;
1407         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1408         struct net_device *ndev;
1409         struct mlx4_ib_gid_entry *ge;
1410         struct mlx4_flow_reg_id reg_id = {0, 0};
1411         enum mlx4_protocol prot =  MLX4_PROT_IB_IPV6;
1412
1413         if (mdev->dev->caps.steering_mode ==
1414             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1415                 struct mlx4_ib_steering *ib_steering;
1416
1417                 mutex_lock(&mqp->mutex);
1418                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1419                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1420                                 list_del(&ib_steering->list);
1421                                 break;
1422                         }
1423                 }
1424                 mutex_unlock(&mqp->mutex);
1425                 if (&ib_steering->list == &mqp->steering_rules) {
1426                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1427                         return -EINVAL;
1428                 }
1429                 reg_id = ib_steering->reg_id;
1430                 kfree(ib_steering);
1431         }
1432
1433         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1434                                     prot, reg_id.id);
1435         if (err)
1436                 return err;
1437
1438         if (mlx4_is_bonded(dev)) {
1439                 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1440                                             prot, reg_id.mirror);
1441                 if (err)
1442                         return err;
1443         }
1444
1445         mutex_lock(&mqp->mutex);
1446         ge = find_gid_entry(mqp, gid->raw);
1447         if (ge) {
1448                 spin_lock_bh(&mdev->iboe.lock);
1449                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1450                 if (ndev)
1451                         dev_hold(ndev);
1452                 spin_unlock_bh(&mdev->iboe.lock);
1453                 if (ndev)
1454                         dev_put(ndev);
1455                 list_del(&ge->list);
1456                 kfree(ge);
1457         } else
1458                 pr_warn("could not find mgid entry\n");
1459
1460         mutex_unlock(&mqp->mutex);
1461
1462         return 0;
1463 }
1464
1465 static int init_node_data(struct mlx4_ib_dev *dev)
1466 {
1467         struct ib_smp *in_mad  = NULL;
1468         struct ib_smp *out_mad = NULL;
1469         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1470         int err = -ENOMEM;
1471
1472         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1473         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1474         if (!in_mad || !out_mad)
1475                 goto out;
1476
1477         init_query_mad(in_mad);
1478         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1479         if (mlx4_is_master(dev->dev))
1480                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1481
1482         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1483         if (err)
1484                 goto out;
1485
1486         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1487
1488         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1489
1490         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1491         if (err)
1492                 goto out;
1493
1494         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1495         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1496
1497 out:
1498         kfree(in_mad);
1499         kfree(out_mad);
1500         return err;
1501 }
1502
1503 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1504                         char *buf)
1505 {
1506         struct mlx4_ib_dev *dev =
1507                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1508         return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device);
1509 }
1510
1511 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1512                            char *buf)
1513 {
1514         struct mlx4_ib_dev *dev =
1515                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1516         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
1517                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
1518                        (int) dev->dev->caps.fw_ver & 0xffff);
1519 }
1520
1521 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1522                         char *buf)
1523 {
1524         struct mlx4_ib_dev *dev =
1525                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1526         return sprintf(buf, "%x\n", dev->dev->rev_id);
1527 }
1528
1529 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1530                           char *buf)
1531 {
1532         struct mlx4_ib_dev *dev =
1533                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1534         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
1535                        dev->dev->board_id);
1536 }
1537
1538 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1539 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1540 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1541 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1542
1543 static struct device_attribute *mlx4_class_attributes[] = {
1544         &dev_attr_hw_rev,
1545         &dev_attr_fw_ver,
1546         &dev_attr_hca_type,
1547         &dev_attr_board_id
1548 };
1549
1550 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id,
1551                                      struct net_device *dev)
1552 {
1553         memcpy(eui, dev->dev_addr, 3);
1554         memcpy(eui + 5, dev->dev_addr + 3, 3);
1555         if (vlan_id < 0x1000) {
1556                 eui[3] = vlan_id >> 8;
1557                 eui[4] = vlan_id & 0xff;
1558         } else {
1559                 eui[3] = 0xff;
1560                 eui[4] = 0xfe;
1561         }
1562         eui[0] ^= 2;
1563 }
1564
1565 static void update_gids_task(struct work_struct *work)
1566 {
1567         struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
1568         struct mlx4_cmd_mailbox *mailbox;
1569         union ib_gid *gids;
1570         int err;
1571         struct mlx4_dev *dev = gw->dev->dev;
1572         int is_bonded = mlx4_is_bonded(dev);
1573
1574         if (!gw->dev->ib_active)
1575                 return;
1576
1577         mailbox = mlx4_alloc_cmd_mailbox(dev);
1578         if (IS_ERR(mailbox)) {
1579                 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
1580                 return;
1581         }
1582
1583         gids = mailbox->buf;
1584         memcpy(gids, gw->gids, sizeof gw->gids);
1585
1586         err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1587                        MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT,
1588                        MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
1589         if (err)
1590                 pr_warn("set port command failed\n");
1591         else
1592                 if ((gw->port == 1) || !is_bonded)
1593                         mlx4_ib_dispatch_event(gw->dev,
1594                                                is_bonded ? 1 : gw->port,
1595                                                IB_EVENT_GID_CHANGE);
1596
1597         mlx4_free_cmd_mailbox(dev, mailbox);
1598         kfree(gw);
1599 }
1600
1601 static void reset_gids_task(struct work_struct *work)
1602 {
1603         struct update_gid_work *gw =
1604                         container_of(work, struct update_gid_work, work);
1605         struct mlx4_cmd_mailbox *mailbox;
1606         union ib_gid *gids;
1607         int err;
1608         struct mlx4_dev *dev = gw->dev->dev;
1609
1610         if (!gw->dev->ib_active)
1611                 return;
1612
1613         mailbox = mlx4_alloc_cmd_mailbox(dev);
1614         if (IS_ERR(mailbox)) {
1615                 pr_warn("reset gid table failed\n");
1616                 goto free;
1617         }
1618
1619         gids = mailbox->buf;
1620         memcpy(gids, gw->gids, sizeof(gw->gids));
1621
1622         if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) ==
1623                                     IB_LINK_LAYER_ETHERNET) {
1624                 err = mlx4_cmd(dev, mailbox->dma,
1625                                MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1626                                MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT,
1627                                MLX4_CMD_TIME_CLASS_B,
1628                                MLX4_CMD_WRAPPED);
1629                 if (err)
1630                         pr_warn("set port %d command failed\n", gw->port);
1631         }
1632
1633         mlx4_free_cmd_mailbox(dev, mailbox);
1634 free:
1635         kfree(gw);
1636 }
1637
1638 static int update_gid_table(struct mlx4_ib_dev *dev, int port,
1639                             union ib_gid *gid, int clear,
1640                             int default_gid)
1641 {
1642         struct update_gid_work *work;
1643         int i;
1644         int need_update = 0;
1645         int free = -1;
1646         int found = -1;
1647         int max_gids;
1648
1649         if (default_gid) {
1650                 free = 0;
1651         } else {
1652                 max_gids = dev->dev->caps.gid_table_len[port];
1653                 for (i = 1; i < max_gids; ++i) {
1654                         if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid,
1655                                     sizeof(*gid)))
1656                                 found = i;
1657
1658                         if (clear) {
1659                                 if (found >= 0) {
1660                                         need_update = 1;
1661                                         dev->iboe.gid_table[port - 1][found] =
1662                                                 zgid;
1663                                         break;
1664                                 }
1665                         } else {
1666                                 if (found >= 0)
1667                                         break;
1668
1669                                 if (free < 0 &&
1670                                     !memcmp(&dev->iboe.gid_table[port - 1][i],
1671                                             &zgid, sizeof(*gid)))
1672                                         free = i;
1673                         }
1674                 }
1675         }
1676
1677         if (found == -1 && !clear && free >= 0) {
1678                 dev->iboe.gid_table[port - 1][free] = *gid;
1679                 need_update = 1;
1680         }
1681
1682         if (!need_update)
1683                 return 0;
1684
1685         work = kzalloc(sizeof(*work), GFP_ATOMIC);
1686         if (!work)
1687                 return -ENOMEM;
1688
1689         memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids));
1690         INIT_WORK(&work->work, update_gids_task);
1691         work->port = port;
1692         work->dev = dev;
1693         queue_work(wq, &work->work);
1694
1695         return 0;
1696 }
1697
1698 static void mlx4_make_default_gid(struct  net_device *dev, union ib_gid *gid)
1699 {
1700         gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1701         mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev);
1702 }
1703
1704
1705 static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port)
1706 {
1707         struct update_gid_work *work;
1708
1709         work = kzalloc(sizeof(*work), GFP_ATOMIC);
1710         if (!work)
1711                 return -ENOMEM;
1712
1713         memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids));
1714         memset(work->gids, 0, sizeof(work->gids));
1715         INIT_WORK(&work->work, reset_gids_task);
1716         work->dev = dev;
1717         work->port = port;
1718         queue_work(wq, &work->work);
1719         return 0;
1720 }
1721
1722 static int mlx4_ib_addr_event(int event, struct net_device *event_netdev,
1723                               struct mlx4_ib_dev *ibdev, union ib_gid *gid)
1724 {
1725         struct mlx4_ib_iboe *iboe;
1726         int port = 0;
1727         struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ?
1728                                 rdma_vlan_dev_real_dev(event_netdev) :
1729                                 event_netdev;
1730         union ib_gid default_gid;
1731
1732         mlx4_make_default_gid(real_dev, &default_gid);
1733
1734         if (!memcmp(gid, &default_gid, sizeof(*gid)))
1735                 return 0;
1736
1737         if (event != NETDEV_DOWN && event != NETDEV_UP)
1738                 return 0;
1739
1740         if ((real_dev != event_netdev) &&
1741             (event == NETDEV_DOWN) &&
1742             rdma_link_local_addr((struct in6_addr *)gid))
1743                 return 0;
1744
1745         iboe = &ibdev->iboe;
1746         spin_lock_bh(&iboe->lock);
1747
1748         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1749                 if ((netif_is_bond_master(real_dev) &&
1750                      (real_dev == iboe->masters[port - 1])) ||
1751                      (!netif_is_bond_master(real_dev) &&
1752                      (real_dev == iboe->netdevs[port - 1])))
1753                         update_gid_table(ibdev, port, gid,
1754                                          event == NETDEV_DOWN, 0);
1755
1756         spin_unlock_bh(&iboe->lock);
1757         return 0;
1758
1759 }
1760
1761 static u8 mlx4_ib_get_dev_port(struct net_device *dev,
1762                                struct mlx4_ib_dev *ibdev)
1763 {
1764         u8 port = 0;
1765         struct mlx4_ib_iboe *iboe;
1766         struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ?
1767                                 rdma_vlan_dev_real_dev(dev) : dev;
1768
1769         iboe = &ibdev->iboe;
1770
1771         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1772                 if ((netif_is_bond_master(real_dev) &&
1773                      (real_dev == iboe->masters[port - 1])) ||
1774                      (!netif_is_bond_master(real_dev) &&
1775                      (real_dev == iboe->netdevs[port - 1])))
1776                         break;
1777
1778         if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1779                 return 0;
1780         else
1781                 return port;
1782 }
1783
1784 static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event,
1785                                 void *ptr)
1786 {
1787         struct mlx4_ib_dev *ibdev;
1788         struct in_ifaddr *ifa = ptr;
1789         union ib_gid gid;
1790         struct net_device *event_netdev = ifa->ifa_dev->dev;
1791
1792         ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
1793
1794         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet);
1795
1796         mlx4_ib_addr_event(event, event_netdev, ibdev, &gid);
1797         return NOTIFY_DONE;
1798 }
1799
1800 #if IS_ENABLED(CONFIG_IPV6)
1801 static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event,
1802                                 void *ptr)
1803 {
1804         struct mlx4_ib_dev *ibdev;
1805         struct inet6_ifaddr *ifa = ptr;
1806         union  ib_gid *gid = (union ib_gid *)&ifa->addr;
1807         struct net_device *event_netdev = ifa->idev->dev;
1808
1809         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6);
1810
1811         mlx4_ib_addr_event(event, event_netdev, ibdev, gid);
1812         return NOTIFY_DONE;
1813 }
1814 #endif
1815
1816 #define MLX4_IB_INVALID_MAC     ((u64)-1)
1817 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
1818                                struct net_device *dev,
1819                                int port)
1820 {
1821         u64 new_smac = 0;
1822         u64 release_mac = MLX4_IB_INVALID_MAC;
1823         struct mlx4_ib_qp *qp;
1824
1825         read_lock(&dev_base_lock);
1826         new_smac = mlx4_mac_to_u64(dev->dev_addr);
1827         read_unlock(&dev_base_lock);
1828
1829         atomic64_set(&ibdev->iboe.mac[port - 1], new_smac);
1830
1831         /* no need for update QP1 and mac registration in non-SRIOV */
1832         if (!mlx4_is_mfunc(ibdev->dev))
1833                 return;
1834
1835         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
1836         qp = ibdev->qp1_proxy[port - 1];
1837         if (qp) {
1838                 int new_smac_index;
1839                 u64 old_smac;
1840                 struct mlx4_update_qp_params update_params;
1841
1842                 mutex_lock(&qp->mutex);
1843                 old_smac = qp->pri.smac;
1844                 if (new_smac == old_smac)
1845                         goto unlock;
1846
1847                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
1848
1849                 if (new_smac_index < 0)
1850                         goto unlock;
1851
1852                 update_params.smac_index = new_smac_index;
1853                 if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC,
1854                                    &update_params)) {
1855                         release_mac = new_smac;
1856                         goto unlock;
1857                 }
1858                 /* if old port was zero, no mac was yet registered for this QP */
1859                 if (qp->pri.smac_port)
1860                         release_mac = old_smac;
1861                 qp->pri.smac = new_smac;
1862                 qp->pri.smac_port = port;
1863                 qp->pri.smac_index = new_smac_index;
1864         }
1865
1866 unlock:
1867         if (release_mac != MLX4_IB_INVALID_MAC)
1868                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
1869         if (qp)
1870                 mutex_unlock(&qp->mutex);
1871         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
1872 }
1873
1874 static void mlx4_ib_get_dev_addr(struct net_device *dev,
1875                                  struct mlx4_ib_dev *ibdev, u8 port)
1876 {
1877         struct in_device *in_dev;
1878 #if IS_ENABLED(CONFIG_IPV6)
1879         struct inet6_dev *in6_dev;
1880         union ib_gid  *pgid;
1881         struct inet6_ifaddr *ifp;
1882         union ib_gid default_gid;
1883 #endif
1884         union ib_gid gid;
1885
1886
1887         if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1888                 return;
1889
1890         /* IPv4 gids */
1891         in_dev = in_dev_get(dev);
1892         if (in_dev) {
1893                 for_ifa(in_dev) {
1894                         /*ifa->ifa_address;*/
1895                         ipv6_addr_set_v4mapped(ifa->ifa_address,
1896                                                (struct in6_addr *)&gid);
1897                         update_gid_table(ibdev, port, &gid, 0, 0);
1898                 }
1899                 endfor_ifa(in_dev);
1900                 in_dev_put(in_dev);
1901         }
1902 #if IS_ENABLED(CONFIG_IPV6)
1903         mlx4_make_default_gid(dev, &default_gid);
1904         /* IPv6 gids */
1905         in6_dev = in6_dev_get(dev);
1906         if (in6_dev) {
1907                 read_lock_bh(&in6_dev->lock);
1908                 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) {
1909                         pgid = (union ib_gid *)&ifp->addr;
1910                         if (!memcmp(pgid, &default_gid, sizeof(*pgid)))
1911                                 continue;
1912                         update_gid_table(ibdev, port, pgid, 0, 0);
1913                 }
1914                 read_unlock_bh(&in6_dev->lock);
1915                 in6_dev_put(in6_dev);
1916         }
1917 #endif
1918 }
1919
1920 static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev,
1921                                  struct  net_device *dev, u8 port)
1922 {
1923         union ib_gid gid;
1924         mlx4_make_default_gid(dev, &gid);
1925         update_gid_table(ibdev, port, &gid, 0, 1);
1926 }
1927
1928 static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev)
1929 {
1930         struct  net_device *dev;
1931         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
1932         int i;
1933         int err = 0;
1934
1935         for (i = 1; i <= ibdev->num_ports; ++i) {
1936                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i) ==
1937                     IB_LINK_LAYER_ETHERNET) {
1938                         err = reset_gid_table(ibdev, i);
1939                         if (err)
1940                                 goto out;
1941                 }
1942         }
1943
1944         read_lock(&dev_base_lock);
1945         spin_lock_bh(&iboe->lock);
1946
1947         for_each_netdev(&init_net, dev) {
1948                 u8 port = mlx4_ib_get_dev_port(dev, ibdev);
1949                 /* port will be non-zero only for ETH ports */
1950                 if (port) {
1951                         mlx4_ib_set_default_gid(ibdev, dev, port);
1952                         mlx4_ib_get_dev_addr(dev, ibdev, port);
1953                 }
1954         }
1955
1956         spin_unlock_bh(&iboe->lock);
1957         read_unlock(&dev_base_lock);
1958 out:
1959         return err;
1960 }
1961
1962 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
1963                                  struct net_device *dev,
1964                                  unsigned long event)
1965
1966 {
1967         struct mlx4_ib_iboe *iboe;
1968         int update_qps_port = -1;
1969         int port;
1970
1971         iboe = &ibdev->iboe;
1972
1973         spin_lock_bh(&iboe->lock);
1974         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1975                 enum ib_port_state      port_state = IB_PORT_NOP;
1976                 struct net_device *old_master = iboe->masters[port - 1];
1977                 struct net_device *curr_netdev;
1978                 struct net_device *curr_master;
1979
1980                 iboe->netdevs[port - 1] =
1981                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1982                 if (iboe->netdevs[port - 1])
1983                         mlx4_ib_set_default_gid(ibdev,
1984                                                 iboe->netdevs[port - 1], port);
1985                 curr_netdev = iboe->netdevs[port - 1];
1986
1987                 if (iboe->netdevs[port - 1] &&
1988                     netif_is_bond_slave(iboe->netdevs[port - 1])) {
1989                         iboe->masters[port - 1] = netdev_master_upper_dev_get(
1990                                 iboe->netdevs[port - 1]);
1991                 } else {
1992                         iboe->masters[port - 1] = NULL;
1993                 }
1994                 curr_master = iboe->masters[port - 1];
1995
1996                 if (dev == iboe->netdevs[port - 1] &&
1997                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
1998                      event == NETDEV_UP || event == NETDEV_CHANGE))
1999                         update_qps_port = port;
2000
2001                 if (curr_netdev) {
2002                         port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ?
2003                                                 IB_PORT_ACTIVE : IB_PORT_DOWN;
2004                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
2005                         if (curr_master) {
2006                                 /* if using bonding/team and a slave port is down, we
2007                                  * don't want the bond IP based gids in the table since
2008                                  * flows that select port by gid may get the down port.
2009                                 */
2010                                 if (port_state == IB_PORT_DOWN &&
2011                                     !mlx4_is_bonded(ibdev->dev)) {
2012                                         reset_gid_table(ibdev, port);
2013                                         mlx4_ib_set_default_gid(ibdev,
2014                                                                 curr_netdev,
2015                                                                 port);
2016                                 } else {
2017                                         /* gids from the upper dev (bond/team)
2018                                          * should appear in port's gid table
2019                                         */
2020                                         mlx4_ib_get_dev_addr(curr_master,
2021                                                              ibdev, port);
2022                                 }
2023                         }
2024                         /* if bonding is used it is possible that we add it to
2025                          * masters only after IP address is assigned to the
2026                          * net bonding interface.
2027                         */
2028                         if (curr_master && (old_master != curr_master)) {
2029                                 reset_gid_table(ibdev, port);
2030                                 mlx4_ib_set_default_gid(ibdev,
2031                                                         curr_netdev, port);
2032                                 mlx4_ib_get_dev_addr(curr_master, ibdev, port);
2033                         }
2034
2035                         if (!curr_master && (old_master != curr_master)) {
2036                                 reset_gid_table(ibdev, port);
2037                                 mlx4_ib_set_default_gid(ibdev,
2038                                                         curr_netdev, port);
2039                                 mlx4_ib_get_dev_addr(curr_netdev, ibdev, port);
2040                         }
2041                 } else {
2042                         reset_gid_table(ibdev, port);
2043                 }
2044         }
2045
2046         spin_unlock_bh(&iboe->lock);
2047
2048         if (update_qps_port > 0)
2049                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
2050 }
2051
2052 static int mlx4_ib_netdev_event(struct notifier_block *this,
2053                                 unsigned long event, void *ptr)
2054 {
2055         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2056         struct mlx4_ib_dev *ibdev;
2057
2058         if (!net_eq(dev_net(dev), &init_net))
2059                 return NOTIFY_DONE;
2060
2061         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
2062         mlx4_ib_scan_netdevs(ibdev, dev, event);
2063
2064         return NOTIFY_DONE;
2065 }
2066
2067 static void init_pkeys(struct mlx4_ib_dev *ibdev)
2068 {
2069         int port;
2070         int slave;
2071         int i;
2072
2073         if (mlx4_is_master(ibdev->dev)) {
2074                 for (slave = 0; slave <= ibdev->dev->persist->num_vfs;
2075                      ++slave) {
2076                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2077                                 for (i = 0;
2078                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2079                                      ++i) {
2080                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
2081                                         /* master has the identity virt2phys pkey mapping */
2082                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
2083                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
2084                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
2085                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
2086                                 }
2087                         }
2088                 }
2089                 /* initialize pkey cache */
2090                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
2091                         for (i = 0;
2092                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
2093                              ++i)
2094                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
2095                                         (i) ? 0 : 0xFFFF;
2096                 }
2097         }
2098 }
2099
2100 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2101 {
2102         int i, j, eq = 0, total_eqs = 0;
2103
2104         ibdev->eq_table = kcalloc(dev->caps.num_comp_vectors,
2105                                   sizeof(ibdev->eq_table[0]), GFP_KERNEL);
2106         if (!ibdev->eq_table)
2107                 return;
2108
2109         for (i = 1; i <= dev->caps.num_ports; i++) {
2110                 for (j = 0; j < mlx4_get_eqs_per_port(dev, i);
2111                      j++, total_eqs++) {
2112                         if (i > 1 &&  mlx4_is_eq_shared(dev, total_eqs))
2113                                 continue;
2114                         ibdev->eq_table[eq] = total_eqs;
2115                         if (!mlx4_assign_eq(dev, i,
2116                                             &ibdev->eq_table[eq]))
2117                                 eq++;
2118                         else
2119                                 ibdev->eq_table[eq] = -1;
2120                 }
2121         }
2122
2123         for (i = eq; i < dev->caps.num_comp_vectors;
2124              ibdev->eq_table[i++] = -1)
2125                 ;
2126
2127         /* Advertise the new number of EQs to clients */
2128         ibdev->ib_dev.num_comp_vectors = eq;
2129 }
2130
2131 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
2132 {
2133         int i;
2134         int total_eqs = ibdev->ib_dev.num_comp_vectors;
2135
2136         /* no eqs were allocated */
2137         if (!ibdev->eq_table)
2138                 return;
2139
2140         /* Reset the advertised EQ number */
2141         ibdev->ib_dev.num_comp_vectors = 0;
2142
2143         for (i = 0; i < total_eqs; i++)
2144                 mlx4_release_eq(dev, ibdev->eq_table[i]);
2145
2146         kfree(ibdev->eq_table);
2147         ibdev->eq_table = NULL;
2148 }
2149
2150 static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
2151                                struct ib_port_immutable *immutable)
2152 {
2153         struct ib_port_attr attr;
2154         int err;
2155
2156         err = mlx4_ib_query_port(ibdev, port_num, &attr);
2157         if (err)
2158                 return err;
2159
2160         immutable->pkey_tbl_len = attr.pkey_tbl_len;
2161         immutable->gid_tbl_len = attr.gid_tbl_len;
2162
2163         if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND)
2164                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
2165         else
2166                 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
2167
2168         immutable->max_mad_size = IB_MGMT_MAD_SIZE;
2169
2170         return 0;
2171 }
2172
2173 static void *mlx4_ib_add(struct mlx4_dev *dev)
2174 {
2175         struct mlx4_ib_dev *ibdev;
2176         int num_ports = 0;
2177         int i, j;
2178         int err;
2179         struct mlx4_ib_iboe *iboe;
2180         int ib_num_ports = 0;
2181         int num_req_counters;
2182         int allocated;
2183         u32 counter_index;
2184
2185         pr_info_once("%s", mlx4_ib_version);
2186
2187         num_ports = 0;
2188         mlx4_foreach_ib_transport_port(i, dev)
2189                 num_ports++;
2190
2191         /* No point in registering a device with no ports... */
2192         if (num_ports == 0)
2193                 return NULL;
2194
2195         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
2196         if (!ibdev) {
2197                 dev_err(&dev->persist->pdev->dev,
2198                         "Device struct alloc failed\n");
2199                 return NULL;
2200         }
2201
2202         iboe = &ibdev->iboe;
2203
2204         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
2205                 goto err_dealloc;
2206
2207         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
2208                 goto err_pd;
2209
2210         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
2211                                  PAGE_SIZE);
2212         if (!ibdev->uar_map)
2213                 goto err_uar;
2214         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
2215
2216         ibdev->dev = dev;
2217         ibdev->bond_next_port   = 0;
2218
2219         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
2220         ibdev->ib_dev.owner             = THIS_MODULE;
2221         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
2222         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
2223         ibdev->num_ports                = num_ports;
2224         ibdev->ib_dev.phys_port_cnt     = mlx4_is_bonded(dev) ?
2225                                                 1 : ibdev->num_ports;
2226         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
2227         ibdev->ib_dev.dma_device        = &dev->persist->pdev->dev;
2228
2229         if (dev->caps.userspace_caps)
2230                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2231         else
2232                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2233
2234         ibdev->ib_dev.uverbs_cmd_mask   =
2235                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2236                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2237                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2238                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2239                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2240                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2241                 (1ull << IB_USER_VERBS_CMD_REREG_MR)            |
2242                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2243                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2244                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2245                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2246                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2247                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2248                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2249                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2250                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2251                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2252                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2253                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2254                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2255                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2256                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2257                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2258                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2259
2260         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2261         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2262         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2263         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2264         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2265         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2266         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2267         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2268         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2269         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2270         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2271         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2272         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2273         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2274         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2275         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2276         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2277         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2278         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2279         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2280         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2281         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2282         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2283         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2284         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2285         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2286         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2287         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2288         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2289         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2290         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2291         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2292         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2293         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2294         ibdev->ib_dev.rereg_user_mr     = mlx4_ib_rereg_user_mr;
2295         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2296         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
2297         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
2298         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
2299         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2300         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2301         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2302         ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
2303
2304         if (!mlx4_is_slave(ibdev->dev)) {
2305                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2306                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2307                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2308                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2309         }
2310
2311         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2312             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2313                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2314                 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
2315                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2316
2317                 ibdev->ib_dev.uverbs_cmd_mask |=
2318                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2319                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2320         }
2321
2322         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2323                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2324                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2325                 ibdev->ib_dev.uverbs_cmd_mask |=
2326                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2327                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2328         }
2329
2330         if (check_flow_steering_support(dev)) {
2331                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2332                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2333                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2334
2335                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2336                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2337                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2338         }
2339
2340         ibdev->ib_dev.uverbs_ex_cmd_mask |=
2341                 (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
2342                 (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ);
2343
2344         mlx4_ib_alloc_eqs(dev, ibdev);
2345
2346         spin_lock_init(&iboe->lock);
2347
2348         if (init_node_data(ibdev))
2349                 goto err_map;
2350
2351         num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
2352         for (i = 0; i < num_req_counters; ++i) {
2353                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2354                 allocated = 0;
2355                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2356                                                 IB_LINK_LAYER_ETHERNET) {
2357                         err = mlx4_counter_alloc(ibdev->dev, &counter_index);
2358                         /* if failed to allocate a new counter, use default */
2359                         if (err)
2360                                 counter_index =
2361                                         mlx4_get_default_counter_index(dev,
2362                                                                        i + 1);
2363                         else
2364                                 allocated = 1;
2365                 } else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
2366                         counter_index = mlx4_get_default_counter_index(dev,
2367                                                                        i + 1);
2368                 }
2369                 ibdev->counters[i].index = counter_index;
2370                 ibdev->counters[i].allocated = allocated;
2371                 pr_info("counter index %d for port %d allocated %d\n",
2372                         counter_index, i + 1, allocated);
2373         }
2374         if (mlx4_is_bonded(dev))
2375                 for (i = 1; i < ibdev->num_ports ; ++i) {
2376                         ibdev->counters[i].index = ibdev->counters[0].index;
2377                         ibdev->counters[i].allocated = 0;
2378                 }
2379
2380         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2381                 ib_num_ports++;
2382
2383         spin_lock_init(&ibdev->sm_lock);
2384         mutex_init(&ibdev->cap_mask_mutex);
2385         INIT_LIST_HEAD(&ibdev->qp_list);
2386         spin_lock_init(&ibdev->reset_flow_resource_lock);
2387
2388         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2389             ib_num_ports) {
2390                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2391                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2392                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2393                                             &ibdev->steer_qpn_base, 0);
2394                 if (err)
2395                         goto err_counter;
2396
2397                 ibdev->ib_uc_qpns_bitmap =
2398                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2399                                 sizeof(long),
2400                                 GFP_KERNEL);
2401                 if (!ibdev->ib_uc_qpns_bitmap) {
2402                         dev_err(&dev->persist->pdev->dev,
2403                                 "bit map alloc failed\n");
2404                         goto err_steer_qp_release;
2405                 }
2406
2407                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2408
2409                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2410                                 dev, ibdev->steer_qpn_base,
2411                                 ibdev->steer_qpn_base +
2412                                 ibdev->steer_qpn_count - 1);
2413                 if (err)
2414                         goto err_steer_free_bitmap;
2415         }
2416
2417         for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
2418                 atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
2419
2420         if (ib_register_device(&ibdev->ib_dev, NULL))
2421                 goto err_steer_free_bitmap;
2422
2423         if (mlx4_ib_mad_init(ibdev))
2424                 goto err_reg;
2425
2426         if (mlx4_ib_init_sriov(ibdev))
2427                 goto err_mad;
2428
2429         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) {
2430                 if (!iboe->nb.notifier_call) {
2431                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2432                         err = register_netdevice_notifier(&iboe->nb);
2433                         if (err) {
2434                                 iboe->nb.notifier_call = NULL;
2435                                 goto err_notif;
2436                         }
2437                 }
2438                 if (!iboe->nb_inet.notifier_call) {
2439                         iboe->nb_inet.notifier_call = mlx4_ib_inet_event;
2440                         err = register_inetaddr_notifier(&iboe->nb_inet);
2441                         if (err) {
2442                                 iboe->nb_inet.notifier_call = NULL;
2443                                 goto err_notif;
2444                         }
2445                 }
2446 #if IS_ENABLED(CONFIG_IPV6)
2447                 if (!iboe->nb_inet6.notifier_call) {
2448                         iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event;
2449                         err = register_inet6addr_notifier(&iboe->nb_inet6);
2450                         if (err) {
2451                                 iboe->nb_inet6.notifier_call = NULL;
2452                                 goto err_notif;
2453                         }
2454                 }
2455 #endif
2456                 if (mlx4_ib_init_gid_table(ibdev))
2457                         goto err_notif;
2458         }
2459
2460         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2461                 if (device_create_file(&ibdev->ib_dev.dev,
2462                                        mlx4_class_attributes[j]))
2463                         goto err_notif;
2464         }
2465
2466         ibdev->ib_active = true;
2467
2468         if (mlx4_is_mfunc(ibdev->dev))
2469                 init_pkeys(ibdev);
2470
2471         /* create paravirt contexts for any VFs which are active */
2472         if (mlx4_is_master(ibdev->dev)) {
2473                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2474                         if (j == mlx4_master_func_num(ibdev->dev))
2475                                 continue;
2476                         if (mlx4_is_slave_active(ibdev->dev, j))
2477                                 do_slave_init(ibdev, j, 1);
2478                 }
2479         }
2480         return ibdev;
2481
2482 err_notif:
2483         if (ibdev->iboe.nb.notifier_call) {
2484                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2485                         pr_warn("failure unregistering notifier\n");
2486                 ibdev->iboe.nb.notifier_call = NULL;
2487         }
2488         if (ibdev->iboe.nb_inet.notifier_call) {
2489                 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2490                         pr_warn("failure unregistering notifier\n");
2491                 ibdev->iboe.nb_inet.notifier_call = NULL;
2492         }
2493 #if IS_ENABLED(CONFIG_IPV6)
2494         if (ibdev->iboe.nb_inet6.notifier_call) {
2495                 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2496                         pr_warn("failure unregistering notifier\n");
2497                 ibdev->iboe.nb_inet6.notifier_call = NULL;
2498         }
2499 #endif
2500         flush_workqueue(wq);
2501
2502         mlx4_ib_close_sriov(ibdev);
2503
2504 err_mad:
2505         mlx4_ib_mad_cleanup(ibdev);
2506
2507 err_reg:
2508         ib_unregister_device(&ibdev->ib_dev);
2509
2510 err_steer_free_bitmap:
2511         kfree(ibdev->ib_uc_qpns_bitmap);
2512
2513 err_steer_qp_release:
2514         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2515                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2516                                       ibdev->steer_qpn_count);
2517 err_counter:
2518         for (i = 0; i < ibdev->num_ports; ++i) {
2519                 if (ibdev->counters[i].index != -1 &&
2520                     ibdev->counters[i].allocated)
2521                         mlx4_counter_free(ibdev->dev,
2522                                           ibdev->counters[i].index);
2523         }
2524 err_map:
2525         iounmap(ibdev->uar_map);
2526
2527 err_uar:
2528         mlx4_uar_free(dev, &ibdev->priv_uar);
2529
2530 err_pd:
2531         mlx4_pd_free(dev, ibdev->priv_pdn);
2532
2533 err_dealloc:
2534         ib_dealloc_device(&ibdev->ib_dev);
2535
2536         return NULL;
2537 }
2538
2539 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2540 {
2541         int offset;
2542
2543         WARN_ON(!dev->ib_uc_qpns_bitmap);
2544
2545         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2546                                          dev->steer_qpn_count,
2547                                          get_count_order(count));
2548         if (offset < 0)
2549                 return offset;
2550
2551         *qpn = dev->steer_qpn_base + offset;
2552         return 0;
2553 }
2554
2555 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2556 {
2557         if (!qpn ||
2558             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2559                 return;
2560
2561         BUG_ON(qpn < dev->steer_qpn_base);
2562
2563         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2564                               qpn - dev->steer_qpn_base,
2565                               get_count_order(count));
2566 }
2567
2568 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2569                          int is_attach)
2570 {
2571         int err;
2572         size_t flow_size;
2573         struct ib_flow_attr *flow = NULL;
2574         struct ib_flow_spec_ib *ib_spec;
2575
2576         if (is_attach) {
2577                 flow_size = sizeof(struct ib_flow_attr) +
2578                             sizeof(struct ib_flow_spec_ib);
2579                 flow = kzalloc(flow_size, GFP_KERNEL);
2580                 if (!flow)
2581                         return -ENOMEM;
2582                 flow->port = mqp->port;
2583                 flow->num_of_specs = 1;
2584                 flow->size = flow_size;
2585                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2586                 ib_spec->type = IB_FLOW_SPEC_IB;
2587                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2588                 /* Add an empty rule for IB L2 */
2589                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2590
2591                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2592                                             IB_FLOW_DOMAIN_NIC,
2593                                             MLX4_FS_REGULAR,
2594                                             &mqp->reg_id);
2595         } else {
2596                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2597         }
2598         kfree(flow);
2599         return err;
2600 }
2601
2602 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2603 {
2604         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2605         int p;
2606
2607         ibdev->ib_active = false;
2608         flush_workqueue(wq);
2609
2610         mlx4_ib_close_sriov(ibdev);
2611         mlx4_ib_mad_cleanup(ibdev);
2612         ib_unregister_device(&ibdev->ib_dev);
2613         if (ibdev->iboe.nb.notifier_call) {
2614                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2615                         pr_warn("failure unregistering notifier\n");
2616                 ibdev->iboe.nb.notifier_call = NULL;
2617         }
2618
2619         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2620                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2621                                       ibdev->steer_qpn_count);
2622                 kfree(ibdev->ib_uc_qpns_bitmap);
2623         }
2624
2625         if (ibdev->iboe.nb_inet.notifier_call) {
2626                 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2627                         pr_warn("failure unregistering notifier\n");
2628                 ibdev->iboe.nb_inet.notifier_call = NULL;
2629         }
2630 #if IS_ENABLED(CONFIG_IPV6)
2631         if (ibdev->iboe.nb_inet6.notifier_call) {
2632                 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2633                         pr_warn("failure unregistering notifier\n");
2634                 ibdev->iboe.nb_inet6.notifier_call = NULL;
2635         }
2636 #endif
2637
2638         iounmap(ibdev->uar_map);
2639         for (p = 0; p < ibdev->num_ports; ++p)
2640                 if (ibdev->counters[p].index != -1 &&
2641                     ibdev->counters[p].allocated)
2642                         mlx4_counter_free(ibdev->dev, ibdev->counters[p].index);
2643         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2644                 mlx4_CLOSE_PORT(dev, p);
2645
2646         mlx4_ib_free_eqs(dev, ibdev);
2647
2648         mlx4_uar_free(dev, &ibdev->priv_uar);
2649         mlx4_pd_free(dev, ibdev->priv_pdn);
2650         ib_dealloc_device(&ibdev->ib_dev);
2651 }
2652
2653 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2654 {
2655         struct mlx4_ib_demux_work **dm = NULL;
2656         struct mlx4_dev *dev = ibdev->dev;
2657         int i;
2658         unsigned long flags;
2659         struct mlx4_active_ports actv_ports;
2660         unsigned int ports;
2661         unsigned int first_port;
2662
2663         if (!mlx4_is_master(dev))
2664                 return;
2665
2666         actv_ports = mlx4_get_active_ports(dev, slave);
2667         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2668         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2669
2670         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
2671         if (!dm) {
2672                 pr_err("failed to allocate memory for tunneling qp update\n");
2673                 return;
2674         }
2675
2676         for (i = 0; i < ports; i++) {
2677                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
2678                 if (!dm[i]) {
2679                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
2680                         while (--i >= 0)
2681                                 kfree(dm[i]);
2682                         goto out;
2683                 }
2684                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
2685                 dm[i]->port = first_port + i + 1;
2686                 dm[i]->slave = slave;
2687                 dm[i]->do_init = do_init;
2688                 dm[i]->dev = ibdev;
2689         }
2690         /* initialize or tear down tunnel QPs for the slave */
2691         spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
2692         if (!ibdev->sriov.is_going_down) {
2693                 for (i = 0; i < ports; i++)
2694                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
2695                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2696         } else {
2697                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2698                 for (i = 0; i < ports; i++)
2699                         kfree(dm[i]);
2700         }
2701 out:
2702         kfree(dm);
2703         return;
2704 }
2705
2706 static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev)
2707 {
2708         struct mlx4_ib_qp *mqp;
2709         unsigned long flags_qp;
2710         unsigned long flags_cq;
2711         struct mlx4_ib_cq *send_mcq, *recv_mcq;
2712         struct list_head    cq_notify_list;
2713         struct mlx4_cq *mcq;
2714         unsigned long flags;
2715
2716         pr_warn("mlx4_ib_handle_catas_error was started\n");
2717         INIT_LIST_HEAD(&cq_notify_list);
2718
2719         /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/
2720         spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
2721
2722         list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
2723                 spin_lock_irqsave(&mqp->sq.lock, flags_qp);
2724                 if (mqp->sq.tail != mqp->sq.head) {
2725                         send_mcq = to_mcq(mqp->ibqp.send_cq);
2726                         spin_lock_irqsave(&send_mcq->lock, flags_cq);
2727                         if (send_mcq->mcq.comp &&
2728                             mqp->ibqp.send_cq->comp_handler) {
2729                                 if (!send_mcq->mcq.reset_notify_added) {
2730                                         send_mcq->mcq.reset_notify_added = 1;
2731                                         list_add_tail(&send_mcq->mcq.reset_notify,
2732                                                       &cq_notify_list);
2733                                 }
2734                         }
2735                         spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
2736                 }
2737                 spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
2738                 /* Now, handle the QP's receive queue */
2739                 spin_lock_irqsave(&mqp->rq.lock, flags_qp);
2740                 /* no handling is needed for SRQ */
2741                 if (!mqp->ibqp.srq) {
2742                         if (mqp->rq.tail != mqp->rq.head) {
2743                                 recv_mcq = to_mcq(mqp->ibqp.recv_cq);
2744                                 spin_lock_irqsave(&recv_mcq->lock, flags_cq);
2745                                 if (recv_mcq->mcq.comp &&
2746                                     mqp->ibqp.recv_cq->comp_handler) {
2747                                         if (!recv_mcq->mcq.reset_notify_added) {
2748                                                 recv_mcq->mcq.reset_notify_added = 1;
2749                                                 list_add_tail(&recv_mcq->mcq.reset_notify,
2750                                                               &cq_notify_list);
2751                                         }
2752                                 }
2753                                 spin_unlock_irqrestore(&recv_mcq->lock,
2754                                                        flags_cq);
2755                         }
2756                 }
2757                 spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
2758         }
2759
2760         list_for_each_entry(mcq, &cq_notify_list, reset_notify) {
2761                 mcq->comp(mcq);
2762         }
2763         spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
2764         pr_warn("mlx4_ib_handle_catas_error ended\n");
2765 }
2766
2767 static void handle_bonded_port_state_event(struct work_struct *work)
2768 {
2769         struct ib_event_work *ew =
2770                 container_of(work, struct ib_event_work, work);
2771         struct mlx4_ib_dev *ibdev = ew->ib_dev;
2772         enum ib_port_state bonded_port_state = IB_PORT_NOP;
2773         int i;
2774         struct ib_event ibev;
2775
2776         kfree(ew);
2777         spin_lock_bh(&ibdev->iboe.lock);
2778         for (i = 0; i < MLX4_MAX_PORTS; ++i) {
2779                 struct net_device *curr_netdev = ibdev->iboe.netdevs[i];
2780                 enum ib_port_state curr_port_state;
2781
2782                 if (!curr_netdev)
2783                         continue;
2784
2785                 curr_port_state =
2786                         (netif_running(curr_netdev) &&
2787                          netif_carrier_ok(curr_netdev)) ?
2788                         IB_PORT_ACTIVE : IB_PORT_DOWN;
2789
2790                 bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ?
2791                         curr_port_state : IB_PORT_ACTIVE;
2792         }
2793         spin_unlock_bh(&ibdev->iboe.lock);
2794
2795         ibev.device = &ibdev->ib_dev;
2796         ibev.element.port_num = 1;
2797         ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ?
2798                 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
2799
2800         ib_dispatch_event(&ibev);
2801 }
2802
2803 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2804                           enum mlx4_dev_event event, unsigned long param)
2805 {
2806         struct ib_event ibev;
2807         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2808         struct mlx4_eqe *eqe = NULL;
2809         struct ib_event_work *ew;
2810         int p = 0;
2811
2812         if (mlx4_is_bonded(dev) &&
2813             ((event == MLX4_DEV_EVENT_PORT_UP) ||
2814             (event == MLX4_DEV_EVENT_PORT_DOWN))) {
2815                 ew = kmalloc(sizeof(*ew), GFP_ATOMIC);
2816                 if (!ew)
2817                         return;
2818                 INIT_WORK(&ew->work, handle_bonded_port_state_event);
2819                 ew->ib_dev = ibdev;
2820                 queue_work(wq, &ew->work);
2821                 return;
2822         }
2823
2824         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
2825                 eqe = (struct mlx4_eqe *)param;
2826         else
2827                 p = (int) param;
2828
2829         switch (event) {
2830         case MLX4_DEV_EVENT_PORT_UP:
2831                 if (p > ibdev->num_ports)
2832                         return;
2833                 if (mlx4_is_master(dev) &&
2834                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
2835                         IB_LINK_LAYER_INFINIBAND) {
2836                         mlx4_ib_invalidate_all_guid_record(ibdev, p);
2837                 }
2838                 ibev.event = IB_EVENT_PORT_ACTIVE;
2839                 break;
2840
2841         case MLX4_DEV_EVENT_PORT_DOWN:
2842                 if (p > ibdev->num_ports)
2843                         return;
2844                 ibev.event = IB_EVENT_PORT_ERR;
2845                 break;
2846
2847         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2848                 ibdev->ib_active = false;
2849                 ibev.event = IB_EVENT_DEVICE_FATAL;
2850                 mlx4_ib_handle_catas_error(ibdev);
2851                 break;
2852
2853         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
2854                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
2855                 if (!ew) {
2856                         pr_err("failed to allocate memory for events work\n");
2857                         break;
2858                 }
2859
2860                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
2861                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
2862                 ew->ib_dev = ibdev;
2863                 /* need to queue only for port owner, which uses GEN_EQE */
2864                 if (mlx4_is_master(dev))
2865                         queue_work(wq, &ew->work);
2866                 else
2867                         handle_port_mgmt_change_event(&ew->work);
2868                 return;
2869
2870         case MLX4_DEV_EVENT_SLAVE_INIT:
2871                 /* here, p is the slave id */
2872                 do_slave_init(ibdev, p, 1);
2873                 if (mlx4_is_master(dev)) {
2874                         int i;
2875
2876                         for (i = 1; i <= ibdev->num_ports; i++) {
2877                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
2878                                         == IB_LINK_LAYER_INFINIBAND)
2879                                         mlx4_ib_slave_alias_guid_event(ibdev,
2880                                                                        p, i,
2881                                                                        1);
2882                         }
2883                 }
2884                 return;
2885
2886         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
2887                 if (mlx4_is_master(dev)) {
2888                         int i;
2889
2890                         for (i = 1; i <= ibdev->num_ports; i++) {
2891                                 if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
2892                                         == IB_LINK_LAYER_INFINIBAND)
2893                                         mlx4_ib_slave_alias_guid_event(ibdev,
2894                                                                        p, i,
2895                                                                        0);
2896                         }
2897                 }
2898                 /* here, p is the slave id */
2899                 do_slave_init(ibdev, p, 0);
2900                 return;
2901
2902         default:
2903                 return;
2904         }
2905
2906         ibev.device           = ibdev_ptr;
2907         ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p;
2908
2909         ib_dispatch_event(&ibev);
2910 }
2911
2912 static struct mlx4_interface mlx4_ib_interface = {
2913         .add            = mlx4_ib_add,
2914         .remove         = mlx4_ib_remove,
2915         .event          = mlx4_ib_event,
2916         .protocol       = MLX4_PROT_IB_IPV6,
2917         .flags          = MLX4_INTFF_BONDING
2918 };
2919
2920 static int __init mlx4_ib_init(void)
2921 {
2922         int err;
2923
2924         wq = create_singlethread_workqueue("mlx4_ib");
2925         if (!wq)
2926                 return -ENOMEM;
2927
2928         err = mlx4_ib_mcg_init();
2929         if (err)
2930                 goto clean_wq;
2931
2932         err = mlx4_register_interface(&mlx4_ib_interface);
2933         if (err)
2934                 goto clean_mcg;
2935
2936         return 0;
2937
2938 clean_mcg:
2939         mlx4_ib_mcg_destroy();
2940
2941 clean_wq:
2942         destroy_workqueue(wq);
2943         return err;
2944 }
2945
2946 static void __exit mlx4_ib_cleanup(void)
2947 {
2948         mlx4_unregister_interface(&mlx4_ib_interface);
2949         mlx4_ib_mcg_destroy();
2950         destroy_workqueue(wq);
2951 }
2952
2953 module_init(mlx4_ib_init);
2954 module_exit(mlx4_ib_cleanup);