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
  63 MODULE_AUTHOR("Roland Dreier");
  64 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
  65 MODULE_LICENSE("Dual BSD/GPL");
  66 MODULE_VERSION(DRV_VERSION);
  67
  68 int mlx4_ib_sm_guid_assign = 1;
  69 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
  70 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)");
  71
  72 static const char mlx4_ib_version[] =
  73         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
  74         DRV_VERSION " (" DRV_RELDATE ")\n";
  75
  76 struct update_gid_work {
  77         struct work_struct      work;
  78         union ib_gid            gids[128];
  79         struct mlx4_ib_dev     *dev;
  80         int                     port;
  81 };
  82
  83 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
  84
  85 static struct workqueue_struct *wq;
  86
  87 static void init_query_mad(struct ib_smp *mad)
  88 {
  89         mad->base_version  = 1;
  90         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
  91         mad->class_version = 1;
  92         mad->method        = IB_MGMT_METHOD_GET;
  93 }
  94
  95 static union ib_gid zgid;
  96
  97 static int check_flow_steering_support(struct mlx4_dev *dev)
  98 {
  99         int eth_num_ports = 0;
 100         int ib_num_ports = 0;
 101
 102         int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED;
 103
 104         if (dmfs) {
 105                 int i;
 106                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 107                         eth_num_ports++;
 108                 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
 109                         ib_num_ports++;
 110                 dmfs &= (!ib_num_ports ||
 111                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) &&
 112                         (!eth_num_ports ||
 113                          (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN));
 114                 if (ib_num_ports && mlx4_is_mfunc(dev)) {
 115                         pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n");
 116                         dmfs = 0;
 117                 }
 118         }
 119         return dmfs;
 120 }
 121
 122 static int mlx4_ib_query_device(struct ib_device *ibdev,
 123                                 struct ib_device_attr *props)
 124 {
 125         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 126         struct ib_smp *in_mad  = NULL;
 127         struct ib_smp *out_mad = NULL;
 128         int err = -ENOMEM;
 129
 130         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 131         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 132         if (!in_mad || !out_mad)
 133                 goto out;
 134
 135         init_query_mad(in_mad);
 136         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
 137
 138         err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
 139                            1, NULL, NULL, in_mad, out_mad);
 140         if (err)
 141                 goto out;
 142
 143         memset(props, 0, sizeof *props);
 144
 145         props->fw_ver = dev->dev->caps.fw_ver;
 146         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
 147                 IB_DEVICE_PORT_ACTIVE_EVENT             |
 148                 IB_DEVICE_SYS_IMAGE_GUID                |
 149                 IB_DEVICE_RC_RNR_NAK_GEN                |
 150                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
 151         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
 152                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
 153         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
 154                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
 155         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
 156                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
 157         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
 158                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
 159         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
 160                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
 161         if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
 162                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
 163         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
 164                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
 165         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
 166             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
 167             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
 168                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 169         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
 170                 props->device_cap_flags |= IB_DEVICE_XRC;
 171         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
 172                 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
 173         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
 174                 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
 175                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
 176                 else
 177                         props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
 178         if (dev->steering_support ==  MLX4_STEERING_MODE_DEVICE_MANAGED)
 179                 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 180         }
 181
 182         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 183                 0xffffff;
 184         props->vendor_part_id      = dev->dev->pdev->device;
 185         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
 186         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 187
 188         props->max_mr_size         = ~0ull;
 189         props->page_size_cap       = dev->dev->caps.page_size_cap;
 190         props->max_qp              = dev->dev->quotas.qp;
 191         props->max_qp_wr           = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
 192         props->max_sge             = min(dev->dev->caps.max_sq_sg,
 193                                          dev->dev->caps.max_rq_sg);
 194         props->max_cq              = dev->dev->quotas.cq;
 195         props->max_cqe             = dev->dev->caps.max_cqes;
 196         props->max_mr              = dev->dev->quotas.mpt;
 197         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
 198         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
 199         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
 200         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
 201         props->max_srq             = dev->dev->quotas.srq;
 202         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
 203         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
 204         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
 205         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
 206         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
 207                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
 208         props->masked_atomic_cap   = props->atomic_cap;
 209         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
 210         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
 211         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
 212         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 213                                            props->max_mcast_grp;
 214         props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
 215
 216 out:
 217         kfree(in_mad);
 218         kfree(out_mad);
 219
 220         return err;
 221 }
 222
 223 static enum rdma_link_layer
 224 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 225 {
 226         struct mlx4_dev *dev = to_mdev(device)->dev;
 227
 228         return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 229                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 230 }
 231
 232 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
 233                               struct ib_port_attr *props, int netw_view)
 234 {
 235         struct ib_smp *in_mad  = NULL;
 236         struct ib_smp *out_mad = NULL;
 237         int ext_active_speed;
 238         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 239         int err = -ENOMEM;
 240
 241         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 242         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 243         if (!in_mad || !out_mad)
 244                 goto out;
 245
 246         init_query_mad(in_mad);
 247         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 248         in_mad->attr_mod = cpu_to_be32(port);
 249
 250         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 251                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 252
 253         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 254                                 in_mad, out_mad);
 255         if (err)
 256                 goto out;
 257
 258
 259         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
 260         props->lmc              = out_mad->data[34] & 0x7;
 261         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
 262         props->sm_sl            = out_mad->data[36] & 0xf;
 263         props->state            = out_mad->data[32] & 0xf;
 264         props->phys_state       = out_mad->data[33] >> 4;
 265         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
 266         if (netw_view)
 267                 props->gid_tbl_len = out_mad->data[50];
 268         else
 269                 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
 270         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
 271         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
 272         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
 273         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
 274         props->active_width     = out_mad->data[31] & 0xf;
 275         props->active_speed     = out_mad->data[35] >> 4;
 276         props->max_mtu          = out_mad->data[41] & 0xf;
 277         props->active_mtu       = out_mad->data[36] >> 4;
 278         props->subnet_timeout   = out_mad->data[51] & 0x1f;
 279         props->max_vl_num       = out_mad->data[37] >> 4;
 280         props->init_type_reply  = out_mad->data[41] >> 4;
 281
 282         /* Check if extended speeds (EDR/FDR/...) are supported */
 283         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
 284                 ext_active_speed = out_mad->data[62] >> 4;
 285
 286                 switch (ext_active_speed) {
 287                 case 1:
 288                         props->active_speed = IB_SPEED_FDR;
 289                         break;
 290                 case 2:
 291                         props->active_speed = IB_SPEED_EDR;
 292                         break;
 293                 }
 294         }
 295
 296         /* If reported active speed is QDR, check if is FDR-10 */
 297         if (props->active_speed == IB_SPEED_QDR) {
 298                 init_query_mad(in_mad);
 299                 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
 300                 in_mad->attr_mod = cpu_to_be32(port);
 301
 302                 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
 303                                    NULL, NULL, in_mad, out_mad);
 304                 if (err)
 305                         goto out;
 306
 307                 /* Checking LinkSpeedActive for FDR-10 */
 308                 if (out_mad->data[15] & 0x1)
 309                         props->active_speed = IB_SPEED_FDR10;
 310         }
 311
 312         /* Avoid wrong speed value returned by FW if the IB link is down. */
 313         if (props->state == IB_PORT_DOWN)
 314                  props->active_speed = IB_SPEED_SDR;
 315
 316 out:
 317         kfree(in_mad);
 318         kfree(out_mad);
 319         return err;
 320 }
 321
 322 static u8 state_to_phys_state(enum ib_port_state state)
 323 {
 324         return state == IB_PORT_ACTIVE ? 5 : 3;
 325 }
 326
 327 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
 328                                struct ib_port_attr *props, int netw_view)
 329 {
 330
 331         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 332         struct mlx4_ib_iboe *iboe = &mdev->iboe;
 333         struct net_device *ndev;
 334         enum ib_mtu tmp;
 335         struct mlx4_cmd_mailbox *mailbox;
 336         int err = 0;
 337
 338         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
 339         if (IS_ERR(mailbox))
 340                 return PTR_ERR(mailbox);
 341
 342         err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
 343                            MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
 344                            MLX4_CMD_WRAPPED);
 345         if (err)
 346                 goto out;
 347
 348         props->active_width     =  (((u8 *)mailbox->buf)[5] == 0x40) ?
 349                                                 IB_WIDTH_4X : IB_WIDTH_1X;
 350         props->active_speed     = IB_SPEED_QDR;
 351         props->port_cap_flags   = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS;
 352         props->gid_tbl_len      = mdev->dev->caps.gid_table_len[port];
 353         props->max_msg_sz       = mdev->dev->caps.max_msg_sz;
 354         props->pkey_tbl_len     = 1;
 355         props->max_mtu          = IB_MTU_4096;
 356         props->max_vl_num       = 2;
 357         props->state            = IB_PORT_DOWN;
 358         props->phys_state       = state_to_phys_state(props->state);
 359         props->active_mtu       = IB_MTU_256;
 360         spin_lock(&iboe->lock);
 361         ndev = iboe->netdevs[port - 1];
 362         if (!ndev)
 363                 goto out_unlock;
 364
 365         tmp = iboe_get_mtu(ndev->mtu);
 366         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
 367
 368         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
 369                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
 370         props->phys_state       = state_to_phys_state(props->state);
 371 out_unlock:
 372         spin_unlock(&iboe->lock);
 373 out:
 374         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 375         return err;
 376 }
 377
 378 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 379                          struct ib_port_attr *props, int netw_view)
 380 {
 381         int err;
 382
 383         memset(props, 0, sizeof *props);
 384
 385         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 386                 ib_link_query_port(ibdev, port, props, netw_view) :
 387                                 eth_link_query_port(ibdev, port, props, netw_view);
 388
 389         return err;
 390 }
 391
 392 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 393                               struct ib_port_attr *props)
 394 {
 395         /* returns host view */
 396         return __mlx4_ib_query_port(ibdev, port, props, 0);
 397 }
 398
 399 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 400                         union ib_gid *gid, int netw_view)
 401 {
 402         struct ib_smp *in_mad  = NULL;
 403         struct ib_smp *out_mad = NULL;
 404         int err = -ENOMEM;
 405         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 406         int clear = 0;
 407         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 408
 409         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 410         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 411         if (!in_mad || !out_mad)
 412                 goto out;
 413
 414         init_query_mad(in_mad);
 415         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
 416         in_mad->attr_mod = cpu_to_be32(port);
 417
 418         if (mlx4_is_mfunc(dev->dev) && netw_view)
 419                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 420
 421         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
 422         if (err)
 423                 goto out;
 424
 425         memcpy(gid->raw, out_mad->data + 8, 8);
 426
 427         if (mlx4_is_mfunc(dev->dev) && !netw_view) {
 428                 if (index) {
 429                         /* For any index > 0, return the null guid */
 430                         err = 0;
 431                         clear = 1;
 432                         goto out;
 433                 }
 434         }
 435
 436         init_query_mad(in_mad);
 437         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
 438         in_mad->attr_mod = cpu_to_be32(index / 8);
 439
 440         err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
 441                            NULL, NULL, in_mad, out_mad);
 442         if (err)
 443                 goto out;
 444
 445         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
 446
 447 out:
 448         if (clear)
 449                 memset(gid->raw + 8, 0, 8);
 450         kfree(in_mad);
 451         kfree(out_mad);
 452         return err;
 453 }
 454
 455 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
 456                           union ib_gid *gid)
 457 {
 458         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 459
 460         *gid = dev->iboe.gid_table[port - 1][index];
 461
 462         return 0;
 463 }
 464
 465 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 466                              union ib_gid *gid)
 467 {
 468         if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
 469                 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
 470         else
 471                 return iboe_query_gid(ibdev, port, index, gid);
 472 }
 473
 474 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 475                          u16 *pkey, int netw_view)
 476 {
 477         struct ib_smp *in_mad  = NULL;
 478         struct ib_smp *out_mad = NULL;
 479         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
 480         int err = -ENOMEM;
 481
 482         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 483         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 484         if (!in_mad || !out_mad)
 485                 goto out;
 486
 487         init_query_mad(in_mad);
 488         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
 489         in_mad->attr_mod = cpu_to_be32(index / 32);
 490
 491         if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
 492                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
 493
 494         err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
 495                            in_mad, out_mad);
 496         if (err)
 497                 goto out;
 498
 499         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 500
 501 out:
 502         kfree(in_mad);
 503         kfree(out_mad);
 504         return err;
 505 }
 506
 507 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 508 {
 509         return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
 510 }
 511
 512 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 513                                  struct ib_device_modify *props)
 514 {
 515         struct mlx4_cmd_mailbox *mailbox;
 516         unsigned long flags;
 517
 518         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
 519                 return -EOPNOTSUPP;
 520
 521         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
 522                 return 0;
 523
 524         if (mlx4_is_slave(to_mdev(ibdev)->dev))
 525                 return -EOPNOTSUPP;
 526
 527         spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
 528         memcpy(ibdev->node_desc, props->node_desc, 64);
 529         spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
 530
 531         /*
 532          * If possible, pass node desc to FW, so it can generate
 533          * a 144 trap.  If cmd fails, just ignore.
 534          */
 535         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
 536         if (IS_ERR(mailbox))
 537                 return 0;
 538
 539         memcpy(mailbox->buf, props->node_desc, 64);
 540         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
 541                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 542
 543         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
 544
 545         return 0;
 546 }
 547
 548 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 549                          u32 cap_mask)
 550 {
 551         struct mlx4_cmd_mailbox *mailbox;
 552         int err;
 553         u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 554
 555         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 556         if (IS_ERR(mailbox))
 557                 return PTR_ERR(mailbox);
 558
 559         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 560                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 561                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 562         } else {
 563                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 564                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 565         }
 566
 567         err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
 568                        MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
 569
 570         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 571         return err;
 572 }
 573
 574 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 575                                struct ib_port_modify *props)
 576 {
 577         struct ib_port_attr attr;
 578         u32 cap_mask;
 579         int err;
 580
 581         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
 582
 583         err = mlx4_ib_query_port(ibdev, port, &attr);
 584         if (err)
 585                 goto out;
 586
 587         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 588                 ~props->clr_port_cap_mask;
 589
 590         err = mlx4_SET_PORT(to_mdev(ibdev), port,
 591                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
 592                             cap_mask);
 593
 594 out:
 595         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 596         return err;
 597 }
 598
 599 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 600                                                   struct ib_udata *udata)
 601 {
 602         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 603         struct mlx4_ib_ucontext *context;
 604         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
 605         struct mlx4_ib_alloc_ucontext_resp resp;
 606         int err;
 607
 608         if (!dev->ib_active)
 609                 return ERR_PTR(-EAGAIN);
 610
 611         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
 612                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
 613                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
 614                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 615         } else {
 616                 resp.dev_caps         = dev->dev->caps.userspace_caps;
 617                 resp.qp_tab_size      = dev->dev->caps.num_qps;
 618                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 619                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 620                 resp.cqe_size         = dev->dev->caps.cqe_size;
 621         }
 622
 623         context = kmalloc(sizeof *context, GFP_KERNEL);
 624         if (!context)
 625                 return ERR_PTR(-ENOMEM);
 626
 627         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 628         if (err) {
 629                 kfree(context);
 630                 return ERR_PTR(err);
 631         }
 632
 633         INIT_LIST_HEAD(&context->db_page_list);
 634         mutex_init(&context->db_page_mutex);
 635
 636         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
 637                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
 638         else
 639                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
 640
 641         if (err) {
 642                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 643                 kfree(context);
 644                 return ERR_PTR(-EFAULT);
 645         }
 646
 647         return &context->ibucontext;
 648 }
 649
 650 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 651 {
 652         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 653
 654         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 655         kfree(context);
 656
 657         return 0;
 658 }
 659
 660 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 661 {
 662         struct mlx4_ib_dev *dev = to_mdev(context->device);
 663
 664         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 665                 return -EINVAL;
 666
 667         if (vma->vm_pgoff == 0) {
 668                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 669
 670                 if (io_remap_pfn_range(vma, vma->vm_start,
 671                                        to_mucontext(context)->uar.pfn,
 672                                        PAGE_SIZE, vma->vm_page_prot))
 673                         return -EAGAIN;
 674         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 675                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 676
 677                 if (io_remap_pfn_range(vma, vma->vm_start,
 678                                        to_mucontext(context)->uar.pfn +
 679                                        dev->dev->caps.num_uars,
 680                                        PAGE_SIZE, vma->vm_page_prot))
 681                         return -EAGAIN;
 682         } else
 683                 return -EINVAL;
 684
 685         return 0;
 686 }
 687
 688 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 689                                       struct ib_ucontext *context,
 690                                       struct ib_udata *udata)
 691 {
 692         struct mlx4_ib_pd *pd;
 693         int err;
 694
 695         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 696         if (!pd)
 697                 return ERR_PTR(-ENOMEM);
 698
 699         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 700         if (err) {
 701                 kfree(pd);
 702                 return ERR_PTR(err);
 703         }
 704
 705         if (context)
 706                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 707                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 708                         kfree(pd);
 709                         return ERR_PTR(-EFAULT);
 710                 }
 711
 712         return &pd->ibpd;
 713 }
 714
 715 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 716 {
 717         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 718         kfree(pd);
 719
 720         return 0;
 721 }
 722
 723 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
 724                                           struct ib_ucontext *context,
 725                                           struct ib_udata *udata)
 726 {
 727         struct mlx4_ib_xrcd *xrcd;
 728         int err;
 729
 730         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
 731                 return ERR_PTR(-ENOSYS);
 732
 733         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
 734         if (!xrcd)
 735                 return ERR_PTR(-ENOMEM);
 736
 737         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
 738         if (err)
 739                 goto err1;
 740
 741         xrcd->pd = ib_alloc_pd(ibdev);
 742         if (IS_ERR(xrcd->pd)) {
 743                 err = PTR_ERR(xrcd->pd);
 744                 goto err2;
 745         }
 746
 747         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
 748         if (IS_ERR(xrcd->cq)) {
 749                 err = PTR_ERR(xrcd->cq);
 750                 goto err3;
 751         }
 752
 753         return &xrcd->ibxrcd;
 754
 755 err3:
 756         ib_dealloc_pd(xrcd->pd);
 757 err2:
 758         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
 759 err1:
 760         kfree(xrcd);
 761         return ERR_PTR(err);
 762 }
 763
 764 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
 765 {
 766         ib_destroy_cq(to_mxrcd(xrcd)->cq);
 767         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
 768         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
 769         kfree(xrcd);
 770
 771         return 0;
 772 }
 773
 774 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
 775 {
 776         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 777         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 778         struct mlx4_ib_gid_entry *ge;
 779
 780         ge = kzalloc(sizeof *ge, GFP_KERNEL);
 781         if (!ge)
 782                 return -ENOMEM;
 783
 784         ge->gid = *gid;
 785         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
 786                 ge->port = mqp->port;
 787                 ge->added = 1;
 788         }
 789
 790         mutex_lock(&mqp->mutex);
 791         list_add_tail(&ge->list, &mqp->gid_list);
 792         mutex_unlock(&mqp->mutex);
 793
 794         return 0;
 795 }
 796
 797 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
 798                    union ib_gid *gid)
 799 {
 800         struct net_device *ndev;
 801         int ret = 0;
 802
 803         if (!mqp->port)
 804                 return 0;
 805
 806         spin_lock(&mdev->iboe.lock);
 807         ndev = mdev->iboe.netdevs[mqp->port - 1];
 808         if (ndev)
 809                 dev_hold(ndev);
 810         spin_unlock(&mdev->iboe.lock);
 811
 812         if (ndev) {
 813                 ret = 1;
 814                 dev_put(ndev);
 815         }
 816
 817         return ret;
 818 }
 819
 820 struct mlx4_ib_steering {
 821         struct list_head list;
 822         u64 reg_id;
 823         union ib_gid gid;
 824 };
 825
 826 static int parse_flow_attr(struct mlx4_dev *dev,
 827                            u32 qp_num,
 828                            union ib_flow_spec *ib_spec,
 829                            struct _rule_hw *mlx4_spec)
 830 {
 831         enum mlx4_net_trans_rule_id type;
 832
 833         switch (ib_spec->type) {
 834         case IB_FLOW_SPEC_ETH:
 835                 type = MLX4_NET_TRANS_RULE_ID_ETH;
 836                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
 837                        ETH_ALEN);
 838                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
 839                        ETH_ALEN);
 840                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
 841                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
 842                 break;
 843         case IB_FLOW_SPEC_IB:
 844                 type = MLX4_NET_TRANS_RULE_ID_IB;
 845                 mlx4_spec->ib.l3_qpn =
 846                         cpu_to_be32(qp_num);
 847                 mlx4_spec->ib.qpn_mask =
 848                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
 849                 break;
 850
 851
 852         case IB_FLOW_SPEC_IPV4:
 853                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
 854                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
 855                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
 856                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
 857                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
 858                 break;
 859
 860         case IB_FLOW_SPEC_TCP:
 861         case IB_FLOW_SPEC_UDP:
 862                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
 863                                         MLX4_NET_TRANS_RULE_ID_TCP :
 864                                         MLX4_NET_TRANS_RULE_ID_UDP;
 865                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
 866                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
 867                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
 868                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
 869                 break;
 870
 871         default:
 872                 return -EINVAL;
 873         }
 874         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
 875             mlx4_hw_rule_sz(dev, type) < 0)
 876                 return -EINVAL;
 877         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
 878         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
 879         return mlx4_hw_rule_sz(dev, type);
 880 }
 881
 882 struct default_rules {
 883         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
 884         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
 885         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
 886         __u8  link_layer;
 887 };
 888 static const struct default_rules default_table[] = {
 889         {
 890                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
 891                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
 892                 .rules_create_list = {IB_FLOW_SPEC_IB},
 893                 .link_layer = IB_LINK_LAYER_INFINIBAND
 894         }
 895 };
 896
 897 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
 898                                          struct ib_flow_attr *flow_attr)
 899 {
 900         int i, j, k;
 901         void *ib_flow;
 902         const struct default_rules *pdefault_rules = default_table;
 903         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
 904
 905         for (i = 0; i < sizeof(default_table)/sizeof(default_table[0]); i++,
 906              pdefault_rules++) {
 907                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
 908                 memset(&field_types, 0, sizeof(field_types));
 909
 910                 if (link_layer != pdefault_rules->link_layer)
 911                         continue;
 912
 913                 ib_flow = flow_attr + 1;
 914                 /* we assume the specs are sorted */
 915                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
 916                      j < flow_attr->num_of_specs; k++) {
 917                         union ib_flow_spec *current_flow =
 918                                 (union ib_flow_spec *)ib_flow;
 919
 920                         /* same layer but different type */
 921                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
 922                              (pdefault_rules->mandatory_fields[k] &
 923                               IB_FLOW_SPEC_LAYER_MASK)) &&
 924                             (current_flow->type !=
 925                              pdefault_rules->mandatory_fields[k]))
 926                                 goto out;
 927
 928                         /* same layer, try match next one */
 929                         if (current_flow->type ==
 930                             pdefault_rules->mandatory_fields[k]) {
 931                                 j++;
 932                                 ib_flow +=
 933                                         ((union ib_flow_spec *)ib_flow)->size;
 934                         }
 935                 }
 936
 937                 ib_flow = flow_attr + 1;
 938                 for (j = 0; j < flow_attr->num_of_specs;
 939                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
 940                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
 941                                 /* same layer and same type */
 942                                 if (((union ib_flow_spec *)ib_flow)->type ==
 943                                     pdefault_rules->mandatory_not_fields[k])
 944                                         goto out;
 945
 946                 return i;
 947         }
 948 out:
 949         return -1;
 950 }
 951
 952 static int __mlx4_ib_create_default_rules(
 953                 struct mlx4_ib_dev *mdev,
 954                 struct ib_qp *qp,
 955                 const struct default_rules *pdefault_rules,
 956                 struct _rule_hw *mlx4_spec) {
 957         int size = 0;
 958         int i;
 959
 960         for (i = 0; i < sizeof(pdefault_rules->rules_create_list)/
 961                         sizeof(pdefault_rules->rules_create_list[0]); i++) {
 962                 int ret;
 963                 union ib_flow_spec ib_spec;
 964                 switch (pdefault_rules->rules_create_list[i]) {
 965                 case 0:
 966                         /* no rule */
 967                         continue;
 968                 case IB_FLOW_SPEC_IB:
 969                         ib_spec.type = IB_FLOW_SPEC_IB;
 970                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
 971
 972                         break;
 973                 default:
 974                         /* invalid rule */
 975                         return -EINVAL;
 976                 }
 977                 /* We must put empty rule, qpn is being ignored */
 978                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
 979                                       mlx4_spec);
 980                 if (ret < 0) {
 981                         pr_info("invalid parsing\n");
 982                         return -EINVAL;
 983                 }
 984
 985                 mlx4_spec = (void *)mlx4_spec + ret;
 986                 size += ret;
 987         }
 988         return size;
 989 }
 990
 991 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
 992                           int domain,
 993                           enum mlx4_net_trans_promisc_mode flow_type,
 994                           u64 *reg_id)
 995 {
 996         int ret, i;
 997         int size = 0;
 998         void *ib_flow;
 999         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1000         struct mlx4_cmd_mailbox *mailbox;
1001         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1002         int default_flow;
1003
1004         static const u16 __mlx4_domain[] = {
1005                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1006                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1007                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1008                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1009         };
1010
1011         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1012                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1013                 return -EINVAL;
1014         }
1015
1016         if (domain >= IB_FLOW_DOMAIN_NUM) {
1017                 pr_err("Invalid domain value %d\n", domain);
1018                 return -EINVAL;
1019         }
1020
1021         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1022                 return -EINVAL;
1023
1024         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1025         if (IS_ERR(mailbox))
1026                 return PTR_ERR(mailbox);
1027         ctrl = mailbox->buf;
1028
1029         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1030                                  flow_attr->priority);
1031         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1032         ctrl->port = flow_attr->port;
1033         ctrl->qpn = cpu_to_be32(qp->qp_num);
1034
1035         ib_flow = flow_attr + 1;
1036         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1037         /* Add default flows */
1038         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1039         if (default_flow >= 0) {
1040                 ret = __mlx4_ib_create_default_rules(
1041                                 mdev, qp, default_table + default_flow,
1042                                 mailbox->buf + size);
1043                 if (ret < 0) {
1044                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1045                         return -EINVAL;
1046                 }
1047                 size += ret;
1048         }
1049         for (i = 0; i < flow_attr->num_of_specs; i++) {
1050                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1051                                       mailbox->buf + size);
1052                 if (ret < 0) {
1053                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1054                         return -EINVAL;
1055                 }
1056                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1057                 size += ret;
1058         }
1059
1060         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1061                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1062                            MLX4_CMD_NATIVE);
1063         if (ret == -ENOMEM)
1064                 pr_err("mcg table is full. Fail to register network rule.\n");
1065         else if (ret == -ENXIO)
1066                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1067         else if (ret)
1068                 pr_err("Invalid argumant. Fail to register network rule.\n");
1069
1070         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1071         return ret;
1072 }
1073
1074 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1075 {
1076         int err;
1077         err = mlx4_cmd(dev, reg_id, 0, 0,
1078                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1079                        MLX4_CMD_NATIVE);
1080         if (err)
1081                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1082                        reg_id);
1083         return err;
1084 }
1085
1086 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1087                                     struct ib_flow_attr *flow_attr,
1088                                     int domain)
1089 {
1090         int err = 0, i = 0;
1091         struct mlx4_ib_flow *mflow;
1092         enum mlx4_net_trans_promisc_mode type[2];
1093
1094         memset(type, 0, sizeof(type));
1095
1096         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1097         if (!mflow) {
1098                 err = -ENOMEM;
1099                 goto err_free;
1100         }
1101
1102         switch (flow_attr->type) {
1103         case IB_FLOW_ATTR_NORMAL:
1104                 type[0] = MLX4_FS_REGULAR;
1105                 break;
1106
1107         case IB_FLOW_ATTR_ALL_DEFAULT:
1108                 type[0] = MLX4_FS_ALL_DEFAULT;
1109                 break;
1110
1111         case IB_FLOW_ATTR_MC_DEFAULT:
1112                 type[0] = MLX4_FS_MC_DEFAULT;
1113                 break;
1114
1115         case IB_FLOW_ATTR_SNIFFER:
1116                 type[0] = MLX4_FS_UC_SNIFFER;
1117                 type[1] = MLX4_FS_MC_SNIFFER;
1118                 break;
1119
1120         default:
1121                 err = -EINVAL;
1122                 goto err_free;
1123         }
1124
1125         while (i < ARRAY_SIZE(type) && type[i]) {
1126                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1127                                             &mflow->reg_id[i]);
1128                 if (err)
1129                         goto err_free;
1130                 i++;
1131         }
1132
1133         return &mflow->ibflow;
1134
1135 err_free:
1136         kfree(mflow);
1137         return ERR_PTR(err);
1138 }
1139
1140 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1141 {
1142         int err, ret = 0;
1143         int i = 0;
1144         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1145         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1146
1147         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) {
1148                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]);
1149                 if (err)
1150                         ret = err;
1151                 i++;
1152         }
1153
1154         kfree(mflow);
1155         return ret;
1156 }
1157
1158 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1159 {
1160         int err;
1161         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1162         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1163         u64 reg_id;
1164         struct mlx4_ib_steering *ib_steering = NULL;
1165         enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
1166                 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
1167
1168         if (mdev->dev->caps.steering_mode ==
1169             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1170                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1171                 if (!ib_steering)
1172                         return -ENOMEM;
1173         }
1174
1175         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1176                                     !!(mqp->flags &
1177                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1178                                     prot, &reg_id);
1179         if (err)
1180                 goto err_malloc;
1181
1182         err = add_gid_entry(ibqp, gid);
1183         if (err)
1184                 goto err_add;
1185
1186         if (ib_steering) {
1187                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1188                 ib_steering->reg_id = reg_id;
1189                 mutex_lock(&mqp->mutex);
1190                 list_add(&ib_steering->list, &mqp->steering_rules);
1191                 mutex_unlock(&mqp->mutex);
1192         }
1193         return 0;
1194
1195 err_add:
1196         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1197                               prot, reg_id);
1198 err_malloc:
1199         kfree(ib_steering);
1200
1201         return err;
1202 }
1203
1204 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1205 {
1206         struct mlx4_ib_gid_entry *ge;
1207         struct mlx4_ib_gid_entry *tmp;
1208         struct mlx4_ib_gid_entry *ret = NULL;
1209
1210         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1211                 if (!memcmp(raw, ge->gid.raw, 16)) {
1212                         ret = ge;
1213                         break;
1214                 }
1215         }
1216
1217         return ret;
1218 }
1219
1220 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1221 {
1222         int err;
1223         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1224         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1225         struct net_device *ndev;
1226         struct mlx4_ib_gid_entry *ge;
1227         u64 reg_id = 0;
1228         enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
1229                 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
1230
1231         if (mdev->dev->caps.steering_mode ==
1232             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1233                 struct mlx4_ib_steering *ib_steering;
1234
1235                 mutex_lock(&mqp->mutex);
1236                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1237                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1238                                 list_del(&ib_steering->list);
1239                                 break;
1240                         }
1241                 }
1242                 mutex_unlock(&mqp->mutex);
1243                 if (&ib_steering->list == &mqp->steering_rules) {
1244                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1245                         return -EINVAL;
1246                 }
1247                 reg_id = ib_steering->reg_id;
1248                 kfree(ib_steering);
1249         }
1250
1251         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1252                                     prot, reg_id);
1253         if (err)
1254                 return err;
1255
1256         mutex_lock(&mqp->mutex);
1257         ge = find_gid_entry(mqp, gid->raw);
1258         if (ge) {
1259                 spin_lock(&mdev->iboe.lock);
1260                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1261                 if (ndev)
1262                         dev_hold(ndev);
1263                 spin_unlock(&mdev->iboe.lock);
1264                 if (ndev)
1265                         dev_put(ndev);
1266                 list_del(&ge->list);
1267                 kfree(ge);
1268         } else
1269                 pr_warn("could not find mgid entry\n");
1270
1271         mutex_unlock(&mqp->mutex);
1272
1273         return 0;
1274 }
1275
1276 static int init_node_data(struct mlx4_ib_dev *dev)
1277 {
1278         struct ib_smp *in_mad  = NULL;
1279         struct ib_smp *out_mad = NULL;
1280         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1281         int err = -ENOMEM;
1282
1283         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1284         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1285         if (!in_mad || !out_mad)
1286                 goto out;
1287
1288         init_query_mad(in_mad);
1289         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1290         if (mlx4_is_master(dev->dev))
1291                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1292
1293         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1294         if (err)
1295                 goto out;
1296
1297         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1298
1299         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1300
1301         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1302         if (err)
1303                 goto out;
1304
1305         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1306         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1307
1308 out:
1309         kfree(in_mad);
1310         kfree(out_mad);
1311         return err;
1312 }
1313
1314 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1315                         char *buf)
1316 {
1317         struct mlx4_ib_dev *dev =
1318                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1319         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
1320 }
1321
1322 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1323                            char *buf)
1324 {
1325         struct mlx4_ib_dev *dev =
1326                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1327         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
1328                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
1329                        (int) dev->dev->caps.fw_ver & 0xffff);
1330 }
1331
1332 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1333                         char *buf)
1334 {
1335         struct mlx4_ib_dev *dev =
1336                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1337         return sprintf(buf, "%x\n", dev->dev->rev_id);
1338 }
1339
1340 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1341                           char *buf)
1342 {
1343         struct mlx4_ib_dev *dev =
1344                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1345         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
1346                        dev->dev->board_id);
1347 }
1348
1349 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1350 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1351 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1352 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1353
1354 static struct device_attribute *mlx4_class_attributes[] = {
1355         &dev_attr_hw_rev,
1356         &dev_attr_fw_ver,
1357         &dev_attr_hca_type,
1358         &dev_attr_board_id
1359 };
1360
1361 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id,
1362                                      struct net_device *dev)
1363 {
1364         memcpy(eui, dev->dev_addr, 3);
1365         memcpy(eui + 5, dev->dev_addr + 3, 3);
1366         if (vlan_id < 0x1000) {
1367                 eui[3] = vlan_id >> 8;
1368                 eui[4] = vlan_id & 0xff;
1369         } else {
1370                 eui[3] = 0xff;
1371                 eui[4] = 0xfe;
1372         }
1373         eui[0] ^= 2;
1374 }
1375
1376 static void update_gids_task(struct work_struct *work)
1377 {
1378         struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
1379         struct mlx4_cmd_mailbox *mailbox;
1380         union ib_gid *gids;
1381         int err;
1382         struct mlx4_dev *dev = gw->dev->dev;
1383
1384         mailbox = mlx4_alloc_cmd_mailbox(dev);
1385         if (IS_ERR(mailbox)) {
1386                 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
1387                 return;
1388         }
1389
1390         gids = mailbox->buf;
1391         memcpy(gids, gw->gids, sizeof gw->gids);
1392
1393         err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1394                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1395                        MLX4_CMD_WRAPPED);
1396         if (err)
1397                 pr_warn("set port command failed\n");
1398         else
1399                 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
1400
1401         mlx4_free_cmd_mailbox(dev, mailbox);
1402         kfree(gw);
1403 }
1404
1405 static void reset_gids_task(struct work_struct *work)
1406 {
1407         struct update_gid_work *gw =
1408                         container_of(work, struct update_gid_work, work);
1409         struct mlx4_cmd_mailbox *mailbox;
1410         union ib_gid *gids;
1411         int err;
1412         struct mlx4_dev *dev = gw->dev->dev;
1413
1414         mailbox = mlx4_alloc_cmd_mailbox(dev);
1415         if (IS_ERR(mailbox)) {
1416                 pr_warn("reset gid table failed\n");
1417                 goto free;
1418         }
1419
1420         gids = mailbox->buf;
1421         memcpy(gids, gw->gids, sizeof(gw->gids));
1422
1423         if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) ==
1424                                     IB_LINK_LAYER_ETHERNET) {
1425                 err = mlx4_cmd(dev, mailbox->dma,
1426                                MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1427                                1, MLX4_CMD_SET_PORT,
1428                                MLX4_CMD_TIME_CLASS_B,
1429                                MLX4_CMD_WRAPPED);
1430                 if (err)
1431                         pr_warn(KERN_WARNING
1432                                 "set port %d command failed\n", gw->port);
1433         }
1434
1435         mlx4_free_cmd_mailbox(dev, mailbox);
1436 free:
1437         kfree(gw);
1438 }
1439
1440 static int update_gid_table(struct mlx4_ib_dev *dev, int port,
1441                             union ib_gid *gid, int clear,
1442                             int default_gid)
1443 {
1444         struct update_gid_work *work;
1445         int i;
1446         int need_update = 0;
1447         int free = -1;
1448         int found = -1;
1449         int max_gids;
1450
1451         if (default_gid) {
1452                 free = 0;
1453         } else {
1454                 max_gids = dev->dev->caps.gid_table_len[port];
1455                 for (i = 1; i < max_gids; ++i) {
1456                         if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid,
1457                                     sizeof(*gid)))
1458                                 found = i;
1459
1460                         if (clear) {
1461                                 if (found >= 0) {
1462                                         need_update = 1;
1463                                         dev->iboe.gid_table[port - 1][found] =
1464                                                 zgid;
1465                                         break;
1466                                 }
1467                         } else {
1468                                 if (found >= 0)
1469                                         break;
1470
1471                                 if (free < 0 &&
1472                                     !memcmp(&dev->iboe.gid_table[port - 1][i],
1473                                             &zgid, sizeof(*gid)))
1474                                         free = i;
1475                         }
1476                 }
1477         }
1478
1479         if (found == -1 && !clear && free >= 0) {
1480                 dev->iboe.gid_table[port - 1][free] = *gid;
1481                 need_update = 1;
1482         }
1483
1484         if (!need_update)
1485                 return 0;
1486
1487         work = kzalloc(sizeof(*work), GFP_ATOMIC);
1488         if (!work)
1489                 return -ENOMEM;
1490
1491         memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids));
1492         INIT_WORK(&work->work, update_gids_task);
1493         work->port = port;
1494         work->dev = dev;
1495         queue_work(wq, &work->work);
1496
1497         return 0;
1498 }
1499
1500 static void mlx4_make_default_gid(struct  net_device *dev, union ib_gid *gid)
1501 {
1502         gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1503         mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev);
1504 }
1505
1506
1507 static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port)
1508 {
1509         struct update_gid_work *work;
1510
1511         work = kzalloc(sizeof(*work), GFP_ATOMIC);
1512         if (!work)
1513                 return -ENOMEM;
1514
1515         memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids));
1516         memset(work->gids, 0, sizeof(work->gids));
1517         INIT_WORK(&work->work, reset_gids_task);
1518         work->dev = dev;
1519         work->port = port;
1520         queue_work(wq, &work->work);
1521         return 0;
1522 }
1523
1524 static int mlx4_ib_addr_event(int event, struct net_device *event_netdev,
1525                               struct mlx4_ib_dev *ibdev, union ib_gid *gid)
1526 {
1527         struct mlx4_ib_iboe *iboe;
1528         int port = 0;
1529         struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ?
1530                                 rdma_vlan_dev_real_dev(event_netdev) :
1531                                 event_netdev;
1532         union ib_gid default_gid;
1533
1534         mlx4_make_default_gid(real_dev, &default_gid);
1535
1536         if (!memcmp(gid, &default_gid, sizeof(*gid)))
1537                 return 0;
1538
1539         if (event != NETDEV_DOWN && event != NETDEV_UP)
1540                 return 0;
1541
1542         if ((real_dev != event_netdev) &&
1543             (event == NETDEV_DOWN) &&
1544             rdma_link_local_addr((struct in6_addr *)gid))
1545                 return 0;
1546
1547         iboe = &ibdev->iboe;
1548         spin_lock(&iboe->lock);
1549
1550         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1551                 if ((netif_is_bond_master(real_dev) &&
1552                      (real_dev == iboe->masters[port - 1])) ||
1553                      (!netif_is_bond_master(real_dev) &&
1554                      (real_dev == iboe->netdevs[port - 1])))
1555                         update_gid_table(ibdev, port, gid,
1556                                          event == NETDEV_DOWN, 0);
1557
1558         spin_unlock(&iboe->lock);
1559         return 0;
1560
1561 }
1562
1563 static u8 mlx4_ib_get_dev_port(struct net_device *dev,
1564                                struct mlx4_ib_dev *ibdev)
1565 {
1566         u8 port = 0;
1567         struct mlx4_ib_iboe *iboe;
1568         struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ?
1569                                 rdma_vlan_dev_real_dev(dev) : dev;
1570
1571         iboe = &ibdev->iboe;
1572
1573         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1574                 if ((netif_is_bond_master(real_dev) &&
1575                      (real_dev == iboe->masters[port - 1])) ||
1576                      (!netif_is_bond_master(real_dev) &&
1577                      (real_dev == iboe->netdevs[port - 1])))
1578                         break;
1579
1580         if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1581                 return 0;
1582         else
1583                 return port;
1584 }
1585
1586 static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event,
1587                                 void *ptr)
1588 {
1589         struct mlx4_ib_dev *ibdev;
1590         struct in_ifaddr *ifa = ptr;
1591         union ib_gid gid;
1592         struct net_device *event_netdev = ifa->ifa_dev->dev;
1593
1594         ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
1595
1596         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet);
1597
1598         mlx4_ib_addr_event(event, event_netdev, ibdev, &gid);
1599         return NOTIFY_DONE;
1600 }
1601
1602 #if IS_ENABLED(CONFIG_IPV6)
1603 static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event,
1604                                 void *ptr)
1605 {
1606         struct mlx4_ib_dev *ibdev;
1607         struct inet6_ifaddr *ifa = ptr;
1608         union  ib_gid *gid = (union ib_gid *)&ifa->addr;
1609         struct net_device *event_netdev = ifa->idev->dev;
1610
1611         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6);
1612
1613         mlx4_ib_addr_event(event, event_netdev, ibdev, gid);
1614         return NOTIFY_DONE;
1615 }
1616 #endif
1617
1618 #define MLX4_IB_INVALID_MAC     ((u64)-1)
1619 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
1620                                struct net_device *dev,
1621                                int port)
1622 {
1623         u64 new_smac = 0;
1624         u64 release_mac = MLX4_IB_INVALID_MAC;
1625         struct mlx4_ib_qp *qp;
1626
1627         read_lock(&dev_base_lock);
1628         new_smac = mlx4_mac_to_u64(dev->dev_addr);
1629         read_unlock(&dev_base_lock);
1630
1631         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
1632         qp = ibdev->qp1_proxy[port - 1];
1633         if (qp) {
1634                 int new_smac_index;
1635                 u64 old_smac = qp->pri.smac;
1636                 struct mlx4_update_qp_params update_params;
1637
1638                 if (new_smac == old_smac)
1639                         goto unlock;
1640
1641                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
1642
1643                 if (new_smac_index < 0)
1644                         goto unlock;
1645
1646                 update_params.smac_index = new_smac_index;
1647                 if (mlx4_update_qp(ibdev->dev, &qp->mqp, MLX4_UPDATE_QP_SMAC,
1648                                    &update_params)) {
1649                         release_mac = new_smac;
1650                         goto unlock;
1651                 }
1652
1653                 qp->pri.smac = new_smac;
1654                 qp->pri.smac_index = new_smac_index;
1655
1656                 release_mac = old_smac;
1657         }
1658
1659 unlock:
1660         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
1661         if (release_mac != MLX4_IB_INVALID_MAC)
1662                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
1663 }
1664
1665 static void mlx4_ib_get_dev_addr(struct net_device *dev,
1666                                  struct mlx4_ib_dev *ibdev, u8 port)
1667 {
1668         struct in_device *in_dev;
1669 #if IS_ENABLED(CONFIG_IPV6)
1670         struct inet6_dev *in6_dev;
1671         union ib_gid  *pgid;
1672         struct inet6_ifaddr *ifp;
1673 #endif
1674         union ib_gid gid;
1675
1676
1677         if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1678                 return;
1679
1680         /* IPv4 gids */
1681         in_dev = in_dev_get(dev);
1682         if (in_dev) {
1683                 for_ifa(in_dev) {
1684                         /*ifa->ifa_address;*/
1685                         ipv6_addr_set_v4mapped(ifa->ifa_address,
1686                                                (struct in6_addr *)&gid);
1687                         update_gid_table(ibdev, port, &gid, 0, 0);
1688                 }
1689                 endfor_ifa(in_dev);
1690                 in_dev_put(in_dev);
1691         }
1692 #if IS_ENABLED(CONFIG_IPV6)
1693         /* IPv6 gids */
1694         in6_dev = in6_dev_get(dev);
1695         if (in6_dev) {
1696                 read_lock_bh(&in6_dev->lock);
1697                 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) {
1698                         pgid = (union ib_gid *)&ifp->addr;
1699                         update_gid_table(ibdev, port, pgid, 0, 0);
1700                 }
1701                 read_unlock_bh(&in6_dev->lock);
1702                 in6_dev_put(in6_dev);
1703         }
1704 #endif
1705 }
1706
1707 static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev,
1708                                  struct  net_device *dev, u8 port)
1709 {
1710         union ib_gid gid;
1711         mlx4_make_default_gid(dev, &gid);
1712         update_gid_table(ibdev, port, &gid, 0, 1);
1713 }
1714
1715 static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev)
1716 {
1717         struct  net_device *dev;
1718         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
1719         int i;
1720
1721         for (i = 1; i <= ibdev->num_ports; ++i)
1722                 if (reset_gid_table(ibdev, i))
1723                         return -1;
1724
1725         read_lock(&dev_base_lock);
1726         spin_lock(&iboe->lock);
1727
1728         for_each_netdev(&init_net, dev) {
1729                 u8 port = mlx4_ib_get_dev_port(dev, ibdev);
1730                 if (port)
1731                         mlx4_ib_get_dev_addr(dev, ibdev, port);
1732         }
1733
1734         spin_unlock(&iboe->lock);
1735         read_unlock(&dev_base_lock);
1736
1737         return 0;
1738 }
1739
1740 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
1741                                  struct net_device *dev,
1742                                  unsigned long event)
1743
1744 {
1745         struct mlx4_ib_iboe *iboe;
1746         int update_qps_port = -1;
1747         int port;
1748
1749         iboe = &ibdev->iboe;
1750
1751         spin_lock(&iboe->lock);
1752         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1753                 enum ib_port_state      port_state = IB_PORT_NOP;
1754                 struct net_device *old_master = iboe->masters[port - 1];
1755                 struct net_device *curr_netdev;
1756                 struct net_device *curr_master;
1757
1758                 iboe->netdevs[port - 1] =
1759                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1760                 if (iboe->netdevs[port - 1])
1761                         mlx4_ib_set_default_gid(ibdev,
1762                                                 iboe->netdevs[port - 1], port);
1763                 curr_netdev = iboe->netdevs[port - 1];
1764
1765                 if (iboe->netdevs[port - 1] &&
1766                     netif_is_bond_slave(iboe->netdevs[port - 1])) {
1767                         iboe->masters[port - 1] = netdev_master_upper_dev_get(
1768                                 iboe->netdevs[port - 1]);
1769                 } else {
1770                         iboe->masters[port - 1] = NULL;
1771                 }
1772                 curr_master = iboe->masters[port - 1];
1773
1774                 if (dev == iboe->netdevs[port - 1] &&
1775                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
1776                      event == NETDEV_UP || event == NETDEV_CHANGE))
1777                         update_qps_port = port;
1778
1779                 if (curr_netdev) {
1780                         port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ?
1781                                                 IB_PORT_ACTIVE : IB_PORT_DOWN;
1782                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1783                 } else {
1784                         reset_gid_table(ibdev, port);
1785                 }
1786                 /* if using bonding/team and a slave port is down, we don't the bond IP
1787                  * based gids in the table since flows that select port by gid may get
1788                  * the down port.
1789                  */
1790                 if (curr_master && (port_state == IB_PORT_DOWN)) {
1791                         reset_gid_table(ibdev, port);
1792                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1793                 }
1794                 /* if bonding is used it is possible that we add it to masters
1795                  * only after IP address is assigned to the net bonding
1796                  * interface.
1797                 */
1798                 if (curr_master && (old_master != curr_master)) {
1799                         reset_gid_table(ibdev, port);
1800                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1801                         mlx4_ib_get_dev_addr(curr_master, ibdev, port);
1802                 }
1803
1804                 if (!curr_master && (old_master != curr_master)) {
1805                         reset_gid_table(ibdev, port);
1806                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1807                         mlx4_ib_get_dev_addr(curr_netdev, ibdev, port);
1808                 }
1809         }
1810
1811         spin_unlock(&iboe->lock);
1812
1813         if (update_qps_port > 0)
1814                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
1815 }
1816
1817 static int mlx4_ib_netdev_event(struct notifier_block *this,
1818                                 unsigned long event, void *ptr)
1819 {
1820         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1821         struct mlx4_ib_dev *ibdev;
1822
1823         if (!net_eq(dev_net(dev), &init_net))
1824                 return NOTIFY_DONE;
1825
1826         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1827         mlx4_ib_scan_netdevs(ibdev, dev, event);
1828
1829         return NOTIFY_DONE;
1830 }
1831
1832 static void init_pkeys(struct mlx4_ib_dev *ibdev)
1833 {
1834         int port;
1835         int slave;
1836         int i;
1837
1838         if (mlx4_is_master(ibdev->dev)) {
1839                 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) {
1840                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1841                                 for (i = 0;
1842                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1843                                      ++i) {
1844                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
1845                                         /* master has the identity virt2phys pkey mapping */
1846                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
1847                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
1848                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
1849                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
1850                                 }
1851                         }
1852                 }
1853                 /* initialize pkey cache */
1854                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1855                         for (i = 0;
1856                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1857                              ++i)
1858                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
1859                                         (i) ? 0 : 0xFFFF;
1860                 }
1861         }
1862 }
1863
1864 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1865 {
1866         char name[80];
1867         int eq_per_port = 0;
1868         int added_eqs = 0;
1869         int total_eqs = 0;
1870         int i, j, eq;
1871
1872         /* Legacy mode or comp_pool is not large enough */
1873         if (dev->caps.comp_pool == 0 ||
1874             dev->caps.num_ports > dev->caps.comp_pool)
1875                 return;
1876
1877         eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
1878                                         dev->caps.num_ports);
1879
1880         /* Init eq table */
1881         added_eqs = 0;
1882         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
1883                 added_eqs += eq_per_port;
1884
1885         total_eqs = dev->caps.num_comp_vectors + added_eqs;
1886
1887         ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
1888         if (!ibdev->eq_table)
1889                 return;
1890
1891         ibdev->eq_added = added_eqs;
1892
1893         eq = 0;
1894         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
1895                 for (j = 0; j < eq_per_port; j++) {
1896                         snprintf(name, sizeof(name), "mlx4-ib-%d-%d@%s",
1897                                  i, j, dev->pdev->bus->name);
1898                         /* Set IRQ for specific name (per ring) */
1899                         if (mlx4_assign_eq(dev, name, NULL,
1900                                            &ibdev->eq_table[eq])) {
1901                                 /* Use legacy (same as mlx4_en driver) */
1902                                 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
1903                                 ibdev->eq_table[eq] =
1904                                         (eq % dev->caps.num_comp_vectors);
1905                         }
1906                         eq++;
1907                 }
1908         }
1909
1910         /* Fill the reset of the vector with legacy EQ */
1911         for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
1912                 ibdev->eq_table[eq++] = i;
1913
1914         /* Advertise the new number of EQs to clients */
1915         ibdev->ib_dev.num_comp_vectors = total_eqs;
1916 }
1917
1918 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1919 {
1920         int i;
1921
1922         /* no additional eqs were added */
1923         if (!ibdev->eq_table)
1924                 return;
1925
1926         /* Reset the advertised EQ number */
1927         ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1928
1929         /* Free only the added eqs */
1930         for (i = 0; i < ibdev->eq_added; i++) {
1931                 /* Don't free legacy eqs if used */
1932                 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
1933                         continue;
1934                 mlx4_release_eq(dev, ibdev->eq_table[i]);
1935         }
1936
1937         kfree(ibdev->eq_table);
1938 }
1939
1940 static void *mlx4_ib_add(struct mlx4_dev *dev)
1941 {
1942         struct mlx4_ib_dev *ibdev;
1943         int num_ports = 0;
1944         int i, j;
1945         int err;
1946         struct mlx4_ib_iboe *iboe;
1947         int ib_num_ports = 0;
1948
1949         pr_info_once("%s", mlx4_ib_version);
1950
1951         num_ports = 0;
1952         mlx4_foreach_ib_transport_port(i, dev)
1953                 num_ports++;
1954
1955         /* No point in registering a device with no ports... */
1956         if (num_ports == 0)
1957                 return NULL;
1958
1959         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1960         if (!ibdev) {
1961                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1962                 return NULL;
1963         }
1964
1965         iboe = &ibdev->iboe;
1966
1967         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1968                 goto err_dealloc;
1969
1970         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1971                 goto err_pd;
1972
1973         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1974                                  PAGE_SIZE);
1975         if (!ibdev->uar_map)
1976                 goto err_uar;
1977         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1978
1979         ibdev->dev = dev;
1980
1981         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1982         ibdev->ib_dev.owner             = THIS_MODULE;
1983         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
1984         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
1985         ibdev->num_ports                = num_ports;
1986         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1987         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
1988         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
1989
1990         if (dev->caps.userspace_caps)
1991                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
1992         else
1993                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
1994
1995         ibdev->ib_dev.uverbs_cmd_mask   =
1996                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1997                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1998                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1999                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2000                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2001                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2002                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2003                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2004                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2005                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2006                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2007                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2008                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2009                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2010                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2011                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2012                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2013                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2014                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2015                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2016                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2017                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2018                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2019
2020         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2021         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2022         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2023         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2024         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2025         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2026         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2027         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2028         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2029         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2030         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2031         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2032         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2033         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2034         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2035         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2036         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2037         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2038         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2039         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2040         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2041         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2042         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2043         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2044         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2045         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2046         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2047         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2048         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2049         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2050         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2051         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2052         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2053         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2054         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2055         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
2056         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
2057         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
2058         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2059         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2060         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2061
2062         if (!mlx4_is_slave(ibdev->dev)) {
2063                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2064                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2065                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2066                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2067         }
2068
2069         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2070             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2071                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2072                 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
2073                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2074
2075                 ibdev->ib_dev.uverbs_cmd_mask |=
2076                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2077                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2078         }
2079
2080         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2081                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2082                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2083                 ibdev->ib_dev.uverbs_cmd_mask |=
2084                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2085                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2086         }
2087
2088         if (check_flow_steering_support(dev)) {
2089                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2090                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2091                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2092
2093                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2094                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2095                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2096         }
2097
2098         mlx4_ib_alloc_eqs(dev, ibdev);
2099
2100         spin_lock_init(&iboe->lock);
2101
2102         if (init_node_data(ibdev))
2103                 goto err_map;
2104
2105         for (i = 0; i < ibdev->num_ports; ++i) {
2106                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2107                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2108                                                 IB_LINK_LAYER_ETHERNET) {
2109                         err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
2110                         if (err)
2111                                 ibdev->counters[i] = -1;
2112                 } else {
2113                         ibdev->counters[i] = -1;
2114                 }
2115         }
2116
2117         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2118                 ib_num_ports++;
2119
2120         spin_lock_init(&ibdev->sm_lock);
2121         mutex_init(&ibdev->cap_mask_mutex);
2122
2123         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2124             ib_num_ports) {
2125                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2126                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2127                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2128                                             &ibdev->steer_qpn_base);
2129                 if (err)
2130                         goto err_counter;
2131
2132                 ibdev->ib_uc_qpns_bitmap =
2133                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2134                                 sizeof(long),
2135                                 GFP_KERNEL);
2136                 if (!ibdev->ib_uc_qpns_bitmap) {
2137                         dev_err(&dev->pdev->dev, "bit map alloc failed\n");
2138                         goto err_steer_qp_release;
2139                 }
2140
2141                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2142
2143                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2144                                 dev, ibdev->steer_qpn_base,
2145                                 ibdev->steer_qpn_base +
2146                                 ibdev->steer_qpn_count - 1);
2147                 if (err)
2148                         goto err_steer_free_bitmap;
2149         }
2150
2151         if (ib_register_device(&ibdev->ib_dev, NULL))
2152                 goto err_steer_free_bitmap;
2153
2154         if (mlx4_ib_mad_init(ibdev))
2155                 goto err_reg;
2156
2157         if (mlx4_ib_init_sriov(ibdev))
2158                 goto err_mad;
2159
2160         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) {
2161                 if (!iboe->nb.notifier_call) {
2162                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2163                         err = register_netdevice_notifier(&iboe->nb);
2164                         if (err) {
2165                                 iboe->nb.notifier_call = NULL;
2166                                 goto err_notif;
2167                         }
2168                 }
2169                 if (!iboe->nb_inet.notifier_call) {
2170                         iboe->nb_inet.notifier_call = mlx4_ib_inet_event;
2171                         err = register_inetaddr_notifier(&iboe->nb_inet);
2172                         if (err) {
2173                                 iboe->nb_inet.notifier_call = NULL;
2174                                 goto err_notif;
2175                         }
2176                 }
2177 #if IS_ENABLED(CONFIG_IPV6)
2178                 if (!iboe->nb_inet6.notifier_call) {
2179                         iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event;
2180                         err = register_inet6addr_notifier(&iboe->nb_inet6);
2181                         if (err) {
2182                                 iboe->nb_inet6.notifier_call = NULL;
2183                                 goto err_notif;
2184                         }
2185                 }
2186 #endif
2187                 for (i = 1 ; i <= ibdev->num_ports ; ++i)
2188                         reset_gid_table(ibdev, i);
2189                 rtnl_lock();
2190                 mlx4_ib_scan_netdevs(ibdev, NULL, 0);
2191                 rtnl_unlock();
2192                 mlx4_ib_init_gid_table(ibdev);
2193         }
2194
2195         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2196                 if (device_create_file(&ibdev->ib_dev.dev,
2197                                        mlx4_class_attributes[j]))
2198                         goto err_notif;
2199         }
2200
2201         ibdev->ib_active = true;
2202
2203         if (mlx4_is_mfunc(ibdev->dev))
2204                 init_pkeys(ibdev);
2205
2206         /* create paravirt contexts for any VFs which are active */
2207         if (mlx4_is_master(ibdev->dev)) {
2208                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2209                         if (j == mlx4_master_func_num(ibdev->dev))
2210                                 continue;
2211                         if (mlx4_is_slave_active(ibdev->dev, j))
2212                                 do_slave_init(ibdev, j, 1);
2213                 }
2214         }
2215         return ibdev;
2216
2217 err_notif:
2218         if (ibdev->iboe.nb.notifier_call) {
2219                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2220                         pr_warn("failure unregistering notifier\n");
2221                 ibdev->iboe.nb.notifier_call = NULL;
2222         }
2223         if (ibdev->iboe.nb_inet.notifier_call) {
2224                 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2225                         pr_warn("failure unregistering notifier\n");
2226                 ibdev->iboe.nb_inet.notifier_call = NULL;
2227         }
2228 #if IS_ENABLED(CONFIG_IPV6)
2229         if (ibdev->iboe.nb_inet6.notifier_call) {
2230                 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2231                         pr_warn("failure unregistering notifier\n");
2232                 ibdev->iboe.nb_inet6.notifier_call = NULL;
2233         }
2234 #endif
2235         flush_workqueue(wq);
2236
2237         mlx4_ib_close_sriov(ibdev);
2238
2239 err_mad:
2240         mlx4_ib_mad_cleanup(ibdev);
2241
2242 err_reg:
2243         ib_unregister_device(&ibdev->ib_dev);
2244
2245 err_steer_free_bitmap:
2246         kfree(ibdev->ib_uc_qpns_bitmap);
2247
2248 err_steer_qp_release:
2249         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2250                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2251                                       ibdev->steer_qpn_count);
2252 err_counter:
2253         for (; i; --i)
2254                 if (ibdev->counters[i - 1] != -1)
2255                         mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
2256
2257 err_map:
2258         iounmap(ibdev->uar_map);
2259
2260 err_uar:
2261         mlx4_uar_free(dev, &ibdev->priv_uar);
2262
2263 err_pd:
2264         mlx4_pd_free(dev, ibdev->priv_pdn);
2265
2266 err_dealloc:
2267         ib_dealloc_device(&ibdev->ib_dev);
2268
2269         return NULL;
2270 }
2271
2272 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2273 {
2274         int offset;
2275
2276         WARN_ON(!dev->ib_uc_qpns_bitmap);
2277
2278         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2279                                          dev->steer_qpn_count,
2280                                          get_count_order(count));
2281         if (offset < 0)
2282                 return offset;
2283
2284         *qpn = dev->steer_qpn_base + offset;
2285         return 0;
2286 }
2287
2288 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2289 {
2290         if (!qpn ||
2291             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2292                 return;
2293
2294         BUG_ON(qpn < dev->steer_qpn_base);
2295
2296         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2297                               qpn - dev->steer_qpn_base,
2298                               get_count_order(count));
2299 }
2300
2301 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2302                          int is_attach)
2303 {
2304         int err;
2305         size_t flow_size;
2306         struct ib_flow_attr *flow = NULL;
2307         struct ib_flow_spec_ib *ib_spec;
2308
2309         if (is_attach) {
2310                 flow_size = sizeof(struct ib_flow_attr) +
2311                             sizeof(struct ib_flow_spec_ib);
2312                 flow = kzalloc(flow_size, GFP_KERNEL);
2313                 if (!flow)
2314                         return -ENOMEM;
2315                 flow->port = mqp->port;
2316                 flow->num_of_specs = 1;
2317                 flow->size = flow_size;
2318                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2319                 ib_spec->type = IB_FLOW_SPEC_IB;
2320                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2321                 /* Add an empty rule for IB L2 */
2322                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2323
2324                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2325                                             IB_FLOW_DOMAIN_NIC,
2326                                             MLX4_FS_REGULAR,
2327                                             &mqp->reg_id);
2328         } else {
2329                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2330         }
2331         kfree(flow);
2332         return err;
2333 }
2334
2335 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2336 {
2337         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2338         int p;
2339
2340         mlx4_ib_close_sriov(ibdev);
2341         mlx4_ib_mad_cleanup(ibdev);
2342         ib_unregister_device(&ibdev->ib_dev);
2343         if (ibdev->iboe.nb.notifier_call) {
2344                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2345                         pr_warn("failure unregistering notifier\n");
2346                 ibdev->iboe.nb.notifier_call = NULL;
2347         }
2348
2349         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2350                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2351                                       ibdev->steer_qpn_count);
2352                 kfree(ibdev->ib_uc_qpns_bitmap);
2353         }
2354
2355         if (ibdev->iboe.nb_inet.notifier_call) {
2356                 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2357                         pr_warn("failure unregistering notifier\n");
2358                 ibdev->iboe.nb_inet.notifier_call = NULL;
2359         }
2360 #if IS_ENABLED(CONFIG_IPV6)
2361         if (ibdev->iboe.nb_inet6.notifier_call) {
2362                 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2363                         pr_warn("failure unregistering notifier\n");
2364                 ibdev->iboe.nb_inet6.notifier_call = NULL;
2365         }
2366 #endif
2367
2368         iounmap(ibdev->uar_map);
2369         for (p = 0; p < ibdev->num_ports; ++p)
2370                 if (ibdev->counters[p] != -1)
2371                         mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
2372         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2373                 mlx4_CLOSE_PORT(dev, p);
2374
2375         mlx4_ib_free_eqs(dev, ibdev);
2376
2377         mlx4_uar_free(dev, &ibdev->priv_uar);
2378         mlx4_pd_free(dev, ibdev->priv_pdn);
2379         ib_dealloc_device(&ibdev->ib_dev);
2380 }
2381
2382 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2383 {
2384         struct mlx4_ib_demux_work **dm = NULL;
2385         struct mlx4_dev *dev = ibdev->dev;
2386         int i;
2387         unsigned long flags;
2388         struct mlx4_active_ports actv_ports;
2389         unsigned int ports;
2390         unsigned int first_port;
2391
2392         if (!mlx4_is_master(dev))
2393                 return;
2394
2395         actv_ports = mlx4_get_active_ports(dev, slave);
2396         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2397         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2398
2399         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
2400         if (!dm) {
2401                 pr_err("failed to allocate memory for tunneling qp update\n");
2402                 goto out;
2403         }
2404
2405         for (i = 0; i < ports; i++) {
2406                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
2407                 if (!dm[i]) {
2408                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
2409                         for (i = 0; i < dev->caps.num_ports; i++) {
2410                                 if (dm[i])
2411                                         kfree(dm[i]);
2412                         }
2413                         goto out;
2414                 }
2415         }
2416         /* initialize or tear down tunnel QPs for the slave */
2417         for (i = 0; i < ports; i++) {
2418                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
2419                 dm[i]->port = first_port + i + 1;
2420                 dm[i]->slave = slave;
2421                 dm[i]->do_init = do_init;
2422                 dm[i]->dev = ibdev;
2423                 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
2424                 if (!ibdev->sriov.is_going_down)
2425                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
2426                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2427         }
2428 out:
2429         kfree(dm);
2430         return;
2431 }
2432
2433 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2434                           enum mlx4_dev_event event, unsigned long param)
2435 {
2436         struct ib_event ibev;
2437         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2438         struct mlx4_eqe *eqe = NULL;
2439         struct ib_event_work *ew;
2440         int p = 0;
2441
2442         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
2443                 eqe = (struct mlx4_eqe *)param;
2444         else
2445                 p = (int) param;
2446
2447         switch (event) {
2448         case MLX4_DEV_EVENT_PORT_UP:
2449                 if (p > ibdev->num_ports)
2450                         return;
2451                 if (mlx4_is_master(dev) &&
2452                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
2453                         IB_LINK_LAYER_INFINIBAND) {
2454                         mlx4_ib_invalidate_all_guid_record(ibdev, p);
2455                 }
2456                 ibev.event = IB_EVENT_PORT_ACTIVE;
2457                 break;
2458
2459         case MLX4_DEV_EVENT_PORT_DOWN:
2460                 if (p > ibdev->num_ports)
2461                         return;
2462                 ibev.event = IB_EVENT_PORT_ERR;
2463                 break;
2464
2465         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2466                 ibdev->ib_active = false;
2467                 ibev.event = IB_EVENT_DEVICE_FATAL;
2468                 break;
2469
2470         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
2471                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
2472                 if (!ew) {
2473                         pr_err("failed to allocate memory for events work\n");
2474                         break;
2475                 }
2476
2477                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
2478                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
2479                 ew->ib_dev = ibdev;
2480                 /* need to queue only for port owner, which uses GEN_EQE */
2481                 if (mlx4_is_master(dev))
2482                         queue_work(wq, &ew->work);
2483                 else
2484                         handle_port_mgmt_change_event(&ew->work);
2485                 return;
2486
2487         case MLX4_DEV_EVENT_SLAVE_INIT:
2488                 /* here, p is the slave id */
2489                 do_slave_init(ibdev, p, 1);
2490                 return;
2491
2492         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
2493                 /* here, p is the slave id */
2494                 do_slave_init(ibdev, p, 0);
2495                 return;
2496
2497         default:
2498                 return;
2499         }
2500
2501         ibev.device           = ibdev_ptr;
2502         ibev.element.port_num = (u8) p;
2503
2504         ib_dispatch_event(&ibev);
2505 }
2506
2507 static struct mlx4_interface mlx4_ib_interface = {
2508         .add            = mlx4_ib_add,
2509         .remove         = mlx4_ib_remove,
2510         .event          = mlx4_ib_event,
2511         .protocol       = MLX4_PROT_IB_IPV6
2512 };
2513
2514 static int __init mlx4_ib_init(void)
2515 {
2516         int err;
2517
2518         wq = create_singlethread_workqueue("mlx4_ib");
2519         if (!wq)
2520                 return -ENOMEM;
2521
2522         err = mlx4_ib_mcg_init();
2523         if (err)
2524                 goto clean_wq;
2525
2526         err = mlx4_register_interface(&mlx4_ib_interface);
2527         if (err)
2528                 goto clean_mcg;
2529
2530         return 0;
2531
2532 clean_mcg:
2533         mlx4_ib_mcg_destroy();
2534
2535 clean_wq:
2536         destroy_workqueue(wq);
2537         return err;
2538 }
2539
2540 static void __exit mlx4_ib_cleanup(void)
2541 {
2542         mlx4_unregister_interface(&mlx4_ib_interface);
2543         mlx4_ib_mcg_destroy();
2544         destroy_workqueue(wq);
2545 }
2546
2547 module_init(mlx4_ib_init);
2548 module_exit(mlx4_ib_cleanup);