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