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_ib_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
 554         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 555         if (IS_ERR(mailbox))
 556                 return PTR_ERR(mailbox);
 557
 558         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
 559                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
 560                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
 561         } else {
 562                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
 563                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 564         }
 565
 566         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 567                        MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
 568
 569         mlx4_free_cmd_mailbox(dev->dev, mailbox);
 570         return err;
 571 }
 572
 573 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 574                                struct ib_port_modify *props)
 575 {
 576         struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 577         u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 578         struct ib_port_attr attr;
 579         u32 cap_mask;
 580         int err;
 581
 582         /* return OK if this is RoCE. CM calls ib_modify_port() regardless
 583          * of whether port link layer is ETH or IB. For ETH ports, qkey
 584          * violations and port capabilities are not meaningful.
 585          */
 586         if (is_eth)
 587                 return 0;
 588
 589         mutex_lock(&mdev->cap_mask_mutex);
 590
 591         err = mlx4_ib_query_port(ibdev, port, &attr);
 592         if (err)
 593                 goto out;
 594
 595         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 596                 ~props->clr_port_cap_mask;
 597
 598         err = mlx4_ib_SET_PORT(mdev, port,
 599                                !!(mask & IB_PORT_RESET_QKEY_CNTR),
 600                                cap_mask);
 601
 602 out:
 603         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
 604         return err;
 605 }
 606
 607 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 608                                                   struct ib_udata *udata)
 609 {
 610         struct mlx4_ib_dev *dev = to_mdev(ibdev);
 611         struct mlx4_ib_ucontext *context;
 612         struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
 613         struct mlx4_ib_alloc_ucontext_resp resp;
 614         int err;
 615
 616         if (!dev->ib_active)
 617                 return ERR_PTR(-EAGAIN);
 618
 619         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
 620                 resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
 621                 resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
 622                 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 623         } else {
 624                 resp.dev_caps         = dev->dev->caps.userspace_caps;
 625                 resp.qp_tab_size      = dev->dev->caps.num_qps;
 626                 resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
 627                 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
 628                 resp.cqe_size         = dev->dev->caps.cqe_size;
 629         }
 630
 631         context = kmalloc(sizeof *context, GFP_KERNEL);
 632         if (!context)
 633                 return ERR_PTR(-ENOMEM);
 634
 635         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
 636         if (err) {
 637                 kfree(context);
 638                 return ERR_PTR(err);
 639         }
 640
 641         INIT_LIST_HEAD(&context->db_page_list);
 642         mutex_init(&context->db_page_mutex);
 643
 644         if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
 645                 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
 646         else
 647                 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
 648
 649         if (err) {
 650                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 651                 kfree(context);
 652                 return ERR_PTR(-EFAULT);
 653         }
 654
 655         return &context->ibucontext;
 656 }
 657
 658 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 659 {
 660         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
 661
 662         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
 663         kfree(context);
 664
 665         return 0;
 666 }
 667
 668 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 669 {
 670         struct mlx4_ib_dev *dev = to_mdev(context->device);
 671
 672         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
 673                 return -EINVAL;
 674
 675         if (vma->vm_pgoff == 0) {
 676                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 677
 678                 if (io_remap_pfn_range(vma, vma->vm_start,
 679                                        to_mucontext(context)->uar.pfn,
 680                                        PAGE_SIZE, vma->vm_page_prot))
 681                         return -EAGAIN;
 682         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
 683                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 684
 685                 if (io_remap_pfn_range(vma, vma->vm_start,
 686                                        to_mucontext(context)->uar.pfn +
 687                                        dev->dev->caps.num_uars,
 688                                        PAGE_SIZE, vma->vm_page_prot))
 689                         return -EAGAIN;
 690         } else
 691                 return -EINVAL;
 692
 693         return 0;
 694 }
 695
 696 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
 697                                       struct ib_ucontext *context,
 698                                       struct ib_udata *udata)
 699 {
 700         struct mlx4_ib_pd *pd;
 701         int err;
 702
 703         pd = kmalloc(sizeof *pd, GFP_KERNEL);
 704         if (!pd)
 705                 return ERR_PTR(-ENOMEM);
 706
 707         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
 708         if (err) {
 709                 kfree(pd);
 710                 return ERR_PTR(err);
 711         }
 712
 713         if (context)
 714                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
 715                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
 716                         kfree(pd);
 717                         return ERR_PTR(-EFAULT);
 718                 }
 719
 720         return &pd->ibpd;
 721 }
 722
 723 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
 724 {
 725         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
 726         kfree(pd);
 727
 728         return 0;
 729 }
 730
 731 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
 732                                           struct ib_ucontext *context,
 733                                           struct ib_udata *udata)
 734 {
 735         struct mlx4_ib_xrcd *xrcd;
 736         int err;
 737
 738         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
 739                 return ERR_PTR(-ENOSYS);
 740
 741         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
 742         if (!xrcd)
 743                 return ERR_PTR(-ENOMEM);
 744
 745         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
 746         if (err)
 747                 goto err1;
 748
 749         xrcd->pd = ib_alloc_pd(ibdev);
 750         if (IS_ERR(xrcd->pd)) {
 751                 err = PTR_ERR(xrcd->pd);
 752                 goto err2;
 753         }
 754
 755         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
 756         if (IS_ERR(xrcd->cq)) {
 757                 err = PTR_ERR(xrcd->cq);
 758                 goto err3;
 759         }
 760
 761         return &xrcd->ibxrcd;
 762
 763 err3:
 764         ib_dealloc_pd(xrcd->pd);
 765 err2:
 766         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
 767 err1:
 768         kfree(xrcd);
 769         return ERR_PTR(err);
 770 }
 771
 772 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
 773 {
 774         ib_destroy_cq(to_mxrcd(xrcd)->cq);
 775         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
 776         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
 777         kfree(xrcd);
 778
 779         return 0;
 780 }
 781
 782 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
 783 {
 784         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
 785         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
 786         struct mlx4_ib_gid_entry *ge;
 787
 788         ge = kzalloc(sizeof *ge, GFP_KERNEL);
 789         if (!ge)
 790                 return -ENOMEM;
 791
 792         ge->gid = *gid;
 793         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
 794                 ge->port = mqp->port;
 795                 ge->added = 1;
 796         }
 797
 798         mutex_lock(&mqp->mutex);
 799         list_add_tail(&ge->list, &mqp->gid_list);
 800         mutex_unlock(&mqp->mutex);
 801
 802         return 0;
 803 }
 804
 805 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
 806                    union ib_gid *gid)
 807 {
 808         struct net_device *ndev;
 809         int ret = 0;
 810
 811         if (!mqp->port)
 812                 return 0;
 813
 814         spin_lock(&mdev->iboe.lock);
 815         ndev = mdev->iboe.netdevs[mqp->port - 1];
 816         if (ndev)
 817                 dev_hold(ndev);
 818         spin_unlock(&mdev->iboe.lock);
 819
 820         if (ndev) {
 821                 ret = 1;
 822                 dev_put(ndev);
 823         }
 824
 825         return ret;
 826 }
 827
 828 struct mlx4_ib_steering {
 829         struct list_head list;
 830         u64 reg_id;
 831         union ib_gid gid;
 832 };
 833
 834 static int parse_flow_attr(struct mlx4_dev *dev,
 835                            u32 qp_num,
 836                            union ib_flow_spec *ib_spec,
 837                            struct _rule_hw *mlx4_spec)
 838 {
 839         enum mlx4_net_trans_rule_id type;
 840
 841         switch (ib_spec->type) {
 842         case IB_FLOW_SPEC_ETH:
 843                 type = MLX4_NET_TRANS_RULE_ID_ETH;
 844                 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
 845                        ETH_ALEN);
 846                 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
 847                        ETH_ALEN);
 848                 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
 849                 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
 850                 break;
 851         case IB_FLOW_SPEC_IB:
 852                 type = MLX4_NET_TRANS_RULE_ID_IB;
 853                 mlx4_spec->ib.l3_qpn =
 854                         cpu_to_be32(qp_num);
 855                 mlx4_spec->ib.qpn_mask =
 856                         cpu_to_be32(MLX4_IB_FLOW_QPN_MASK);
 857                 break;
 858
 859
 860         case IB_FLOW_SPEC_IPV4:
 861                 type = MLX4_NET_TRANS_RULE_ID_IPV4;
 862                 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
 863                 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
 864                 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
 865                 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
 866                 break;
 867
 868         case IB_FLOW_SPEC_TCP:
 869         case IB_FLOW_SPEC_UDP:
 870                 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
 871                                         MLX4_NET_TRANS_RULE_ID_TCP :
 872                                         MLX4_NET_TRANS_RULE_ID_UDP;
 873                 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
 874                 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
 875                 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
 876                 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
 877                 break;
 878
 879         default:
 880                 return -EINVAL;
 881         }
 882         if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
 883             mlx4_hw_rule_sz(dev, type) < 0)
 884                 return -EINVAL;
 885         mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
 886         mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
 887         return mlx4_hw_rule_sz(dev, type);
 888 }
 889
 890 struct default_rules {
 891         __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
 892         __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS];
 893         __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS];
 894         __u8  link_layer;
 895 };
 896 static const struct default_rules default_table[] = {
 897         {
 898                 .mandatory_fields = {IB_FLOW_SPEC_IPV4},
 899                 .mandatory_not_fields = {IB_FLOW_SPEC_ETH},
 900                 .rules_create_list = {IB_FLOW_SPEC_IB},
 901                 .link_layer = IB_LINK_LAYER_INFINIBAND
 902         }
 903 };
 904
 905 static int __mlx4_ib_default_rules_match(struct ib_qp *qp,
 906                                          struct ib_flow_attr *flow_attr)
 907 {
 908         int i, j, k;
 909         void *ib_flow;
 910         const struct default_rules *pdefault_rules = default_table;
 911         u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port);
 912
 913         for (i = 0; i < sizeof(default_table)/sizeof(default_table[0]); i++,
 914              pdefault_rules++) {
 915                 __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS];
 916                 memset(&field_types, 0, sizeof(field_types));
 917
 918                 if (link_layer != pdefault_rules->link_layer)
 919                         continue;
 920
 921                 ib_flow = flow_attr + 1;
 922                 /* we assume the specs are sorted */
 923                 for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS &&
 924                      j < flow_attr->num_of_specs; k++) {
 925                         union ib_flow_spec *current_flow =
 926                                 (union ib_flow_spec *)ib_flow;
 927
 928                         /* same layer but different type */
 929                         if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) ==
 930                              (pdefault_rules->mandatory_fields[k] &
 931                               IB_FLOW_SPEC_LAYER_MASK)) &&
 932                             (current_flow->type !=
 933                              pdefault_rules->mandatory_fields[k]))
 934                                 goto out;
 935
 936                         /* same layer, try match next one */
 937                         if (current_flow->type ==
 938                             pdefault_rules->mandatory_fields[k]) {
 939                                 j++;
 940                                 ib_flow +=
 941                                         ((union ib_flow_spec *)ib_flow)->size;
 942                         }
 943                 }
 944
 945                 ib_flow = flow_attr + 1;
 946                 for (j = 0; j < flow_attr->num_of_specs;
 947                      j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size)
 948                         for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++)
 949                                 /* same layer and same type */
 950                                 if (((union ib_flow_spec *)ib_flow)->type ==
 951                                     pdefault_rules->mandatory_not_fields[k])
 952                                         goto out;
 953
 954                 return i;
 955         }
 956 out:
 957         return -1;
 958 }
 959
 960 static int __mlx4_ib_create_default_rules(
 961                 struct mlx4_ib_dev *mdev,
 962                 struct ib_qp *qp,
 963                 const struct default_rules *pdefault_rules,
 964                 struct _rule_hw *mlx4_spec) {
 965         int size = 0;
 966         int i;
 967
 968         for (i = 0; i < sizeof(pdefault_rules->rules_create_list)/
 969                         sizeof(pdefault_rules->rules_create_list[0]); i++) {
 970                 int ret;
 971                 union ib_flow_spec ib_spec;
 972                 switch (pdefault_rules->rules_create_list[i]) {
 973                 case 0:
 974                         /* no rule */
 975                         continue;
 976                 case IB_FLOW_SPEC_IB:
 977                         ib_spec.type = IB_FLOW_SPEC_IB;
 978                         ib_spec.size = sizeof(struct ib_flow_spec_ib);
 979
 980                         break;
 981                 default:
 982                         /* invalid rule */
 983                         return -EINVAL;
 984                 }
 985                 /* We must put empty rule, qpn is being ignored */
 986                 ret = parse_flow_attr(mdev->dev, 0, &ib_spec,
 987                                       mlx4_spec);
 988                 if (ret < 0) {
 989                         pr_info("invalid parsing\n");
 990                         return -EINVAL;
 991                 }
 992
 993                 mlx4_spec = (void *)mlx4_spec + ret;
 994                 size += ret;
 995         }
 996         return size;
 997 }
 998
 999 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
1000                           int domain,
1001                           enum mlx4_net_trans_promisc_mode flow_type,
1002                           u64 *reg_id)
1003 {
1004         int ret, i;
1005         int size = 0;
1006         void *ib_flow;
1007         struct mlx4_ib_dev *mdev = to_mdev(qp->device);
1008         struct mlx4_cmd_mailbox *mailbox;
1009         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
1010         int default_flow;
1011
1012         static const u16 __mlx4_domain[] = {
1013                 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
1014                 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
1015                 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
1016                 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
1017         };
1018
1019         if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
1020                 pr_err("Invalid priority value %d\n", flow_attr->priority);
1021                 return -EINVAL;
1022         }
1023
1024         if (domain >= IB_FLOW_DOMAIN_NUM) {
1025                 pr_err("Invalid domain value %d\n", domain);
1026                 return -EINVAL;
1027         }
1028
1029         if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
1030                 return -EINVAL;
1031
1032         mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
1033         if (IS_ERR(mailbox))
1034                 return PTR_ERR(mailbox);
1035         ctrl = mailbox->buf;
1036
1037         ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
1038                                  flow_attr->priority);
1039         ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
1040         ctrl->port = flow_attr->port;
1041         ctrl->qpn = cpu_to_be32(qp->qp_num);
1042
1043         ib_flow = flow_attr + 1;
1044         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
1045         /* Add default flows */
1046         default_flow = __mlx4_ib_default_rules_match(qp, flow_attr);
1047         if (default_flow >= 0) {
1048                 ret = __mlx4_ib_create_default_rules(
1049                                 mdev, qp, default_table + default_flow,
1050                                 mailbox->buf + size);
1051                 if (ret < 0) {
1052                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1053                         return -EINVAL;
1054                 }
1055                 size += ret;
1056         }
1057         for (i = 0; i < flow_attr->num_of_specs; i++) {
1058                 ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow,
1059                                       mailbox->buf + size);
1060                 if (ret < 0) {
1061                         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1062                         return -EINVAL;
1063                 }
1064                 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
1065                 size += ret;
1066         }
1067
1068         ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
1069                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
1070                            MLX4_CMD_NATIVE);
1071         if (ret == -ENOMEM)
1072                 pr_err("mcg table is full. Fail to register network rule.\n");
1073         else if (ret == -ENXIO)
1074                 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
1075         else if (ret)
1076                 pr_err("Invalid argumant. Fail to register network rule.\n");
1077
1078         mlx4_free_cmd_mailbox(mdev->dev, mailbox);
1079         return ret;
1080 }
1081
1082 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
1083 {
1084         int err;
1085         err = mlx4_cmd(dev, reg_id, 0, 0,
1086                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
1087                        MLX4_CMD_NATIVE);
1088         if (err)
1089                 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
1090                        reg_id);
1091         return err;
1092 }
1093
1094 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
1095                                     struct ib_flow_attr *flow_attr,
1096                                     int domain)
1097 {
1098         int err = 0, i = 0;
1099         struct mlx4_ib_flow *mflow;
1100         enum mlx4_net_trans_promisc_mode type[2];
1101
1102         memset(type, 0, sizeof(type));
1103
1104         mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
1105         if (!mflow) {
1106                 err = -ENOMEM;
1107                 goto err_free;
1108         }
1109
1110         switch (flow_attr->type) {
1111         case IB_FLOW_ATTR_NORMAL:
1112                 type[0] = MLX4_FS_REGULAR;
1113                 break;
1114
1115         case IB_FLOW_ATTR_ALL_DEFAULT:
1116                 type[0] = MLX4_FS_ALL_DEFAULT;
1117                 break;
1118
1119         case IB_FLOW_ATTR_MC_DEFAULT:
1120                 type[0] = MLX4_FS_MC_DEFAULT;
1121                 break;
1122
1123         case IB_FLOW_ATTR_SNIFFER:
1124                 type[0] = MLX4_FS_UC_SNIFFER;
1125                 type[1] = MLX4_FS_MC_SNIFFER;
1126                 break;
1127
1128         default:
1129                 err = -EINVAL;
1130                 goto err_free;
1131         }
1132
1133         while (i < ARRAY_SIZE(type) && type[i]) {
1134                 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
1135                                             &mflow->reg_id[i]);
1136                 if (err)
1137                         goto err_free;
1138                 i++;
1139         }
1140
1141         return &mflow->ibflow;
1142
1143 err_free:
1144         kfree(mflow);
1145         return ERR_PTR(err);
1146 }
1147
1148 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1149 {
1150         int err, ret = 0;
1151         int i = 0;
1152         struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1153         struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1154
1155         while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) {
1156                 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]);
1157                 if (err)
1158                         ret = err;
1159                 i++;
1160         }
1161
1162         kfree(mflow);
1163         return ret;
1164 }
1165
1166 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1167 {
1168         int err;
1169         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1170         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1171         u64 reg_id;
1172         struct mlx4_ib_steering *ib_steering = NULL;
1173         enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
1174                 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
1175
1176         if (mdev->dev->caps.steering_mode ==
1177             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1178                 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1179                 if (!ib_steering)
1180                         return -ENOMEM;
1181         }
1182
1183         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1184                                     !!(mqp->flags &
1185                                        MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1186                                     prot, &reg_id);
1187         if (err)
1188                 goto err_malloc;
1189
1190         err = add_gid_entry(ibqp, gid);
1191         if (err)
1192                 goto err_add;
1193
1194         if (ib_steering) {
1195                 memcpy(ib_steering->gid.raw, gid->raw, 16);
1196                 ib_steering->reg_id = reg_id;
1197                 mutex_lock(&mqp->mutex);
1198                 list_add(&ib_steering->list, &mqp->steering_rules);
1199                 mutex_unlock(&mqp->mutex);
1200         }
1201         return 0;
1202
1203 err_add:
1204         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1205                               prot, reg_id);
1206 err_malloc:
1207         kfree(ib_steering);
1208
1209         return err;
1210 }
1211
1212 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1213 {
1214         struct mlx4_ib_gid_entry *ge;
1215         struct mlx4_ib_gid_entry *tmp;
1216         struct mlx4_ib_gid_entry *ret = NULL;
1217
1218         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1219                 if (!memcmp(raw, ge->gid.raw, 16)) {
1220                         ret = ge;
1221                         break;
1222                 }
1223         }
1224
1225         return ret;
1226 }
1227
1228 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1229 {
1230         int err;
1231         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1232         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1233         struct net_device *ndev;
1234         struct mlx4_ib_gid_entry *ge;
1235         u64 reg_id = 0;
1236         enum mlx4_protocol prot = (gid->raw[1] == 0x0e) ?
1237                 MLX4_PROT_IB_IPV4 : MLX4_PROT_IB_IPV6;
1238
1239         if (mdev->dev->caps.steering_mode ==
1240             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1241                 struct mlx4_ib_steering *ib_steering;
1242
1243                 mutex_lock(&mqp->mutex);
1244                 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1245                         if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1246                                 list_del(&ib_steering->list);
1247                                 break;
1248                         }
1249                 }
1250                 mutex_unlock(&mqp->mutex);
1251                 if (&ib_steering->list == &mqp->steering_rules) {
1252                         pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1253                         return -EINVAL;
1254                 }
1255                 reg_id = ib_steering->reg_id;
1256                 kfree(ib_steering);
1257         }
1258
1259         err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1260                                     prot, reg_id);
1261         if (err)
1262                 return err;
1263
1264         mutex_lock(&mqp->mutex);
1265         ge = find_gid_entry(mqp, gid->raw);
1266         if (ge) {
1267                 spin_lock(&mdev->iboe.lock);
1268                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1269                 if (ndev)
1270                         dev_hold(ndev);
1271                 spin_unlock(&mdev->iboe.lock);
1272                 if (ndev)
1273                         dev_put(ndev);
1274                 list_del(&ge->list);
1275                 kfree(ge);
1276         } else
1277                 pr_warn("could not find mgid entry\n");
1278
1279         mutex_unlock(&mqp->mutex);
1280
1281         return 0;
1282 }
1283
1284 static int init_node_data(struct mlx4_ib_dev *dev)
1285 {
1286         struct ib_smp *in_mad  = NULL;
1287         struct ib_smp *out_mad = NULL;
1288         int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1289         int err = -ENOMEM;
1290
1291         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
1292         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1293         if (!in_mad || !out_mad)
1294                 goto out;
1295
1296         init_query_mad(in_mad);
1297         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1298         if (mlx4_is_master(dev->dev))
1299                 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
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         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1306
1307         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1308
1309         err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1310         if (err)
1311                 goto out;
1312
1313         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1314         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1315
1316 out:
1317         kfree(in_mad);
1318         kfree(out_mad);
1319         return err;
1320 }
1321
1322 static ssize_t show_hca(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, "MT%d\n", dev->dev->pdev->device);
1328 }
1329
1330 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1331                            char *buf)
1332 {
1333         struct mlx4_ib_dev *dev =
1334                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1335         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
1336                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
1337                        (int) dev->dev->caps.fw_ver & 0xffff);
1338 }
1339
1340 static ssize_t show_rev(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, "%x\n", dev->dev->rev_id);
1346 }
1347
1348 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1349                           char *buf)
1350 {
1351         struct mlx4_ib_dev *dev =
1352                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1353         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
1354                        dev->dev->board_id);
1355 }
1356
1357 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
1358 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
1359 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
1360 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
1361
1362 static struct device_attribute *mlx4_class_attributes[] = {
1363         &dev_attr_hw_rev,
1364         &dev_attr_fw_ver,
1365         &dev_attr_hca_type,
1366         &dev_attr_board_id
1367 };
1368
1369 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id,
1370                                      struct net_device *dev)
1371 {
1372         memcpy(eui, dev->dev_addr, 3);
1373         memcpy(eui + 5, dev->dev_addr + 3, 3);
1374         if (vlan_id < 0x1000) {
1375                 eui[3] = vlan_id >> 8;
1376                 eui[4] = vlan_id & 0xff;
1377         } else {
1378                 eui[3] = 0xff;
1379                 eui[4] = 0xfe;
1380         }
1381         eui[0] ^= 2;
1382 }
1383
1384 static void update_gids_task(struct work_struct *work)
1385 {
1386         struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
1387         struct mlx4_cmd_mailbox *mailbox;
1388         union ib_gid *gids;
1389         int err;
1390         struct mlx4_dev *dev = gw->dev->dev;
1391
1392         mailbox = mlx4_alloc_cmd_mailbox(dev);
1393         if (IS_ERR(mailbox)) {
1394                 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
1395                 return;
1396         }
1397
1398         gids = mailbox->buf;
1399         memcpy(gids, gw->gids, sizeof gw->gids);
1400
1401         err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1402                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1403                        MLX4_CMD_WRAPPED);
1404         if (err)
1405                 pr_warn("set port command failed\n");
1406         else
1407                 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
1408
1409         mlx4_free_cmd_mailbox(dev, mailbox);
1410         kfree(gw);
1411 }
1412
1413 static void reset_gids_task(struct work_struct *work)
1414 {
1415         struct update_gid_work *gw =
1416                         container_of(work, struct update_gid_work, work);
1417         struct mlx4_cmd_mailbox *mailbox;
1418         union ib_gid *gids;
1419         int err;
1420         struct mlx4_dev *dev = gw->dev->dev;
1421
1422         mailbox = mlx4_alloc_cmd_mailbox(dev);
1423         if (IS_ERR(mailbox)) {
1424                 pr_warn("reset gid table failed\n");
1425                 goto free;
1426         }
1427
1428         gids = mailbox->buf;
1429         memcpy(gids, gw->gids, sizeof(gw->gids));
1430
1431         if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) ==
1432                                     IB_LINK_LAYER_ETHERNET) {
1433                 err = mlx4_cmd(dev, mailbox->dma,
1434                                MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1435                                1, MLX4_CMD_SET_PORT,
1436                                MLX4_CMD_TIME_CLASS_B,
1437                                MLX4_CMD_WRAPPED);
1438                 if (err)
1439                         pr_warn(KERN_WARNING
1440                                 "set port %d command failed\n", gw->port);
1441         }
1442
1443         mlx4_free_cmd_mailbox(dev, mailbox);
1444 free:
1445         kfree(gw);
1446 }
1447
1448 static int update_gid_table(struct mlx4_ib_dev *dev, int port,
1449                             union ib_gid *gid, int clear,
1450                             int default_gid)
1451 {
1452         struct update_gid_work *work;
1453         int i;
1454         int need_update = 0;
1455         int free = -1;
1456         int found = -1;
1457         int max_gids;
1458
1459         if (default_gid) {
1460                 free = 0;
1461         } else {
1462                 max_gids = dev->dev->caps.gid_table_len[port];
1463                 for (i = 1; i < max_gids; ++i) {
1464                         if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid,
1465                                     sizeof(*gid)))
1466                                 found = i;
1467
1468                         if (clear) {
1469                                 if (found >= 0) {
1470                                         need_update = 1;
1471                                         dev->iboe.gid_table[port - 1][found] =
1472                                                 zgid;
1473                                         break;
1474                                 }
1475                         } else {
1476                                 if (found >= 0)
1477                                         break;
1478
1479                                 if (free < 0 &&
1480                                     !memcmp(&dev->iboe.gid_table[port - 1][i],
1481                                             &zgid, sizeof(*gid)))
1482                                         free = i;
1483                         }
1484                 }
1485         }
1486
1487         if (found == -1 && !clear && free >= 0) {
1488                 dev->iboe.gid_table[port - 1][free] = *gid;
1489                 need_update = 1;
1490         }
1491
1492         if (!need_update)
1493                 return 0;
1494
1495         work = kzalloc(sizeof(*work), GFP_ATOMIC);
1496         if (!work)
1497                 return -ENOMEM;
1498
1499         memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids));
1500         INIT_WORK(&work->work, update_gids_task);
1501         work->port = port;
1502         work->dev = dev;
1503         queue_work(wq, &work->work);
1504
1505         return 0;
1506 }
1507
1508 static void mlx4_make_default_gid(struct  net_device *dev, union ib_gid *gid)
1509 {
1510         gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1511         mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev);
1512 }
1513
1514
1515 static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port)
1516 {
1517         struct update_gid_work *work;
1518
1519         work = kzalloc(sizeof(*work), GFP_ATOMIC);
1520         if (!work)
1521                 return -ENOMEM;
1522
1523         memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids));
1524         memset(work->gids, 0, sizeof(work->gids));
1525         INIT_WORK(&work->work, reset_gids_task);
1526         work->dev = dev;
1527         work->port = port;
1528         queue_work(wq, &work->work);
1529         return 0;
1530 }
1531
1532 static int mlx4_ib_addr_event(int event, struct net_device *event_netdev,
1533                               struct mlx4_ib_dev *ibdev, union ib_gid *gid)
1534 {
1535         struct mlx4_ib_iboe *iboe;
1536         int port = 0;
1537         struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ?
1538                                 rdma_vlan_dev_real_dev(event_netdev) :
1539                                 event_netdev;
1540         union ib_gid default_gid;
1541
1542         mlx4_make_default_gid(real_dev, &default_gid);
1543
1544         if (!memcmp(gid, &default_gid, sizeof(*gid)))
1545                 return 0;
1546
1547         if (event != NETDEV_DOWN && event != NETDEV_UP)
1548                 return 0;
1549
1550         if ((real_dev != event_netdev) &&
1551             (event == NETDEV_DOWN) &&
1552             rdma_link_local_addr((struct in6_addr *)gid))
1553                 return 0;
1554
1555         iboe = &ibdev->iboe;
1556         spin_lock(&iboe->lock);
1557
1558         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1559                 if ((netif_is_bond_master(real_dev) &&
1560                      (real_dev == iboe->masters[port - 1])) ||
1561                      (!netif_is_bond_master(real_dev) &&
1562                      (real_dev == iboe->netdevs[port - 1])))
1563                         update_gid_table(ibdev, port, gid,
1564                                          event == NETDEV_DOWN, 0);
1565
1566         spin_unlock(&iboe->lock);
1567         return 0;
1568
1569 }
1570
1571 static u8 mlx4_ib_get_dev_port(struct net_device *dev,
1572                                struct mlx4_ib_dev *ibdev)
1573 {
1574         u8 port = 0;
1575         struct mlx4_ib_iboe *iboe;
1576         struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ?
1577                                 rdma_vlan_dev_real_dev(dev) : dev;
1578
1579         iboe = &ibdev->iboe;
1580
1581         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port)
1582                 if ((netif_is_bond_master(real_dev) &&
1583                      (real_dev == iboe->masters[port - 1])) ||
1584                      (!netif_is_bond_master(real_dev) &&
1585                      (real_dev == iboe->netdevs[port - 1])))
1586                         break;
1587
1588         if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1589                 return 0;
1590         else
1591                 return port;
1592 }
1593
1594 static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event,
1595                                 void *ptr)
1596 {
1597         struct mlx4_ib_dev *ibdev;
1598         struct in_ifaddr *ifa = ptr;
1599         union ib_gid gid;
1600         struct net_device *event_netdev = ifa->ifa_dev->dev;
1601
1602         ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid);
1603
1604         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet);
1605
1606         mlx4_ib_addr_event(event, event_netdev, ibdev, &gid);
1607         return NOTIFY_DONE;
1608 }
1609
1610 #if IS_ENABLED(CONFIG_IPV6)
1611 static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event,
1612                                 void *ptr)
1613 {
1614         struct mlx4_ib_dev *ibdev;
1615         struct inet6_ifaddr *ifa = ptr;
1616         union  ib_gid *gid = (union ib_gid *)&ifa->addr;
1617         struct net_device *event_netdev = ifa->idev->dev;
1618
1619         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6);
1620
1621         mlx4_ib_addr_event(event, event_netdev, ibdev, gid);
1622         return NOTIFY_DONE;
1623 }
1624 #endif
1625
1626 #define MLX4_IB_INVALID_MAC     ((u64)-1)
1627 static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev,
1628                                struct net_device *dev,
1629                                int port)
1630 {
1631         u64 new_smac = 0;
1632         u64 release_mac = MLX4_IB_INVALID_MAC;
1633         struct mlx4_ib_qp *qp;
1634
1635         read_lock(&dev_base_lock);
1636         new_smac = mlx4_mac_to_u64(dev->dev_addr);
1637         read_unlock(&dev_base_lock);
1638
1639         mutex_lock(&ibdev->qp1_proxy_lock[port - 1]);
1640         qp = ibdev->qp1_proxy[port - 1];
1641         if (qp) {
1642                 int new_smac_index;
1643                 u64 old_smac = qp->pri.smac;
1644                 struct mlx4_update_qp_params update_params;
1645
1646                 if (new_smac == old_smac)
1647                         goto unlock;
1648
1649                 new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac);
1650
1651                 if (new_smac_index < 0)
1652                         goto unlock;
1653
1654                 update_params.smac_index = new_smac_index;
1655                 if (mlx4_update_qp(ibdev->dev, &qp->mqp, MLX4_UPDATE_QP_SMAC,
1656                                    &update_params)) {
1657                         release_mac = new_smac;
1658                         goto unlock;
1659                 }
1660
1661                 qp->pri.smac = new_smac;
1662                 qp->pri.smac_index = new_smac_index;
1663
1664                 release_mac = old_smac;
1665         }
1666
1667 unlock:
1668         mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]);
1669         if (release_mac != MLX4_IB_INVALID_MAC)
1670                 mlx4_unregister_mac(ibdev->dev, port, release_mac);
1671 }
1672
1673 static void mlx4_ib_get_dev_addr(struct net_device *dev,
1674                                  struct mlx4_ib_dev *ibdev, u8 port)
1675 {
1676         struct in_device *in_dev;
1677 #if IS_ENABLED(CONFIG_IPV6)
1678         struct inet6_dev *in6_dev;
1679         union ib_gid  *pgid;
1680         struct inet6_ifaddr *ifp;
1681 #endif
1682         union ib_gid gid;
1683
1684
1685         if ((port == 0) || (port > ibdev->dev->caps.num_ports))
1686                 return;
1687
1688         /* IPv4 gids */
1689         in_dev = in_dev_get(dev);
1690         if (in_dev) {
1691                 for_ifa(in_dev) {
1692                         /*ifa->ifa_address;*/
1693                         ipv6_addr_set_v4mapped(ifa->ifa_address,
1694                                                (struct in6_addr *)&gid);
1695                         update_gid_table(ibdev, port, &gid, 0, 0);
1696                 }
1697                 endfor_ifa(in_dev);
1698                 in_dev_put(in_dev);
1699         }
1700 #if IS_ENABLED(CONFIG_IPV6)
1701         /* IPv6 gids */
1702         in6_dev = in6_dev_get(dev);
1703         if (in6_dev) {
1704                 read_lock_bh(&in6_dev->lock);
1705                 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) {
1706                         pgid = (union ib_gid *)&ifp->addr;
1707                         update_gid_table(ibdev, port, pgid, 0, 0);
1708                 }
1709                 read_unlock_bh(&in6_dev->lock);
1710                 in6_dev_put(in6_dev);
1711         }
1712 #endif
1713 }
1714
1715 static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev,
1716                                  struct  net_device *dev, u8 port)
1717 {
1718         union ib_gid gid;
1719         mlx4_make_default_gid(dev, &gid);
1720         update_gid_table(ibdev, port, &gid, 0, 1);
1721 }
1722
1723 static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev)
1724 {
1725         struct  net_device *dev;
1726         struct mlx4_ib_iboe *iboe = &ibdev->iboe;
1727         int i;
1728
1729         for (i = 1; i <= ibdev->num_ports; ++i)
1730                 if (reset_gid_table(ibdev, i))
1731                         return -1;
1732
1733         read_lock(&dev_base_lock);
1734         spin_lock(&iboe->lock);
1735
1736         for_each_netdev(&init_net, dev) {
1737                 u8 port = mlx4_ib_get_dev_port(dev, ibdev);
1738                 if (port)
1739                         mlx4_ib_get_dev_addr(dev, ibdev, port);
1740         }
1741
1742         spin_unlock(&iboe->lock);
1743         read_unlock(&dev_base_lock);
1744
1745         return 0;
1746 }
1747
1748 static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev,
1749                                  struct net_device *dev,
1750                                  unsigned long event)
1751
1752 {
1753         struct mlx4_ib_iboe *iboe;
1754         int update_qps_port = -1;
1755         int port;
1756
1757         iboe = &ibdev->iboe;
1758
1759         spin_lock(&iboe->lock);
1760         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1761                 enum ib_port_state      port_state = IB_PORT_NOP;
1762                 struct net_device *old_master = iboe->masters[port - 1];
1763                 struct net_device *curr_netdev;
1764                 struct net_device *curr_master;
1765
1766                 iboe->netdevs[port - 1] =
1767                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1768                 if (iboe->netdevs[port - 1])
1769                         mlx4_ib_set_default_gid(ibdev,
1770                                                 iboe->netdevs[port - 1], port);
1771                 curr_netdev = iboe->netdevs[port - 1];
1772
1773                 if (iboe->netdevs[port - 1] &&
1774                     netif_is_bond_slave(iboe->netdevs[port - 1])) {
1775                         iboe->masters[port - 1] = netdev_master_upper_dev_get(
1776                                 iboe->netdevs[port - 1]);
1777                 } else {
1778                         iboe->masters[port - 1] = NULL;
1779                 }
1780                 curr_master = iboe->masters[port - 1];
1781
1782                 if (dev == iboe->netdevs[port - 1] &&
1783                     (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER ||
1784                      event == NETDEV_UP || event == NETDEV_CHANGE))
1785                         update_qps_port = port;
1786
1787                 if (curr_netdev) {
1788                         port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ?
1789                                                 IB_PORT_ACTIVE : IB_PORT_DOWN;
1790                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1791                 } else {
1792                         reset_gid_table(ibdev, port);
1793                 }
1794                 /* if using bonding/team and a slave port is down, we don't the bond IP
1795                  * based gids in the table since flows that select port by gid may get
1796                  * the down port.
1797                  */
1798                 if (curr_master && (port_state == IB_PORT_DOWN)) {
1799                         reset_gid_table(ibdev, port);
1800                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1801                 }
1802                 /* if bonding is used it is possible that we add it to masters
1803                  * only after IP address is assigned to the net bonding
1804                  * interface.
1805                 */
1806                 if (curr_master && (old_master != curr_master)) {
1807                         reset_gid_table(ibdev, port);
1808                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1809                         mlx4_ib_get_dev_addr(curr_master, ibdev, port);
1810                 }
1811
1812                 if (!curr_master && (old_master != curr_master)) {
1813                         reset_gid_table(ibdev, port);
1814                         mlx4_ib_set_default_gid(ibdev, curr_netdev, port);
1815                         mlx4_ib_get_dev_addr(curr_netdev, ibdev, port);
1816                 }
1817         }
1818
1819         spin_unlock(&iboe->lock);
1820
1821         if (update_qps_port > 0)
1822                 mlx4_ib_update_qps(ibdev, dev, update_qps_port);
1823 }
1824
1825 static int mlx4_ib_netdev_event(struct notifier_block *this,
1826                                 unsigned long event, void *ptr)
1827 {
1828         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1829         struct mlx4_ib_dev *ibdev;
1830
1831         if (!net_eq(dev_net(dev), &init_net))
1832                 return NOTIFY_DONE;
1833
1834         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1835         mlx4_ib_scan_netdevs(ibdev, dev, event);
1836
1837         return NOTIFY_DONE;
1838 }
1839
1840 static void init_pkeys(struct mlx4_ib_dev *ibdev)
1841 {
1842         int port;
1843         int slave;
1844         int i;
1845
1846         if (mlx4_is_master(ibdev->dev)) {
1847                 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) {
1848                         for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1849                                 for (i = 0;
1850                                      i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1851                                      ++i) {
1852                                         ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
1853                                         /* master has the identity virt2phys pkey mapping */
1854                                                 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
1855                                                         ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
1856                                         mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
1857                                                              ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
1858                                 }
1859                         }
1860                 }
1861                 /* initialize pkey cache */
1862                 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1863                         for (i = 0;
1864                              i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1865                              ++i)
1866                                 ibdev->pkeys.phys_pkey_cache[port-1][i] =
1867                                         (i) ? 0 : 0xFFFF;
1868                 }
1869         }
1870 }
1871
1872 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1873 {
1874         char name[80];
1875         int eq_per_port = 0;
1876         int added_eqs = 0;
1877         int total_eqs = 0;
1878         int i, j, eq;
1879
1880         /* Legacy mode or comp_pool is not large enough */
1881         if (dev->caps.comp_pool == 0 ||
1882             dev->caps.num_ports > dev->caps.comp_pool)
1883                 return;
1884
1885         eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
1886                                         dev->caps.num_ports);
1887
1888         /* Init eq table */
1889         added_eqs = 0;
1890         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
1891                 added_eqs += eq_per_port;
1892
1893         total_eqs = dev->caps.num_comp_vectors + added_eqs;
1894
1895         ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
1896         if (!ibdev->eq_table)
1897                 return;
1898
1899         ibdev->eq_added = added_eqs;
1900
1901         eq = 0;
1902         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
1903                 for (j = 0; j < eq_per_port; j++) {
1904                         snprintf(name, sizeof(name), "mlx4-ib-%d-%d@%s",
1905                                  i, j, dev->pdev->bus->name);
1906                         /* Set IRQ for specific name (per ring) */
1907                         if (mlx4_assign_eq(dev, name, NULL,
1908                                            &ibdev->eq_table[eq])) {
1909                                 /* Use legacy (same as mlx4_en driver) */
1910                                 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
1911                                 ibdev->eq_table[eq] =
1912                                         (eq % dev->caps.num_comp_vectors);
1913                         }
1914                         eq++;
1915                 }
1916         }
1917
1918         /* Fill the reset of the vector with legacy EQ */
1919         for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
1920                 ibdev->eq_table[eq++] = i;
1921
1922         /* Advertise the new number of EQs to clients */
1923         ibdev->ib_dev.num_comp_vectors = total_eqs;
1924 }
1925
1926 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1927 {
1928         int i;
1929
1930         /* no additional eqs were added */
1931         if (!ibdev->eq_table)
1932                 return;
1933
1934         /* Reset the advertised EQ number */
1935         ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1936
1937         /* Free only the added eqs */
1938         for (i = 0; i < ibdev->eq_added; i++) {
1939                 /* Don't free legacy eqs if used */
1940                 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
1941                         continue;
1942                 mlx4_release_eq(dev, ibdev->eq_table[i]);
1943         }
1944
1945         kfree(ibdev->eq_table);
1946 }
1947
1948 static void *mlx4_ib_add(struct mlx4_dev *dev)
1949 {
1950         struct mlx4_ib_dev *ibdev;
1951         int num_ports = 0;
1952         int i, j;
1953         int err;
1954         struct mlx4_ib_iboe *iboe;
1955         int ib_num_ports = 0;
1956
1957         pr_info_once("%s", mlx4_ib_version);
1958
1959         num_ports = 0;
1960         mlx4_foreach_ib_transport_port(i, dev)
1961                 num_ports++;
1962
1963         /* No point in registering a device with no ports... */
1964         if (num_ports == 0)
1965                 return NULL;
1966
1967         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1968         if (!ibdev) {
1969                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1970                 return NULL;
1971         }
1972
1973         iboe = &ibdev->iboe;
1974
1975         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1976                 goto err_dealloc;
1977
1978         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1979                 goto err_pd;
1980
1981         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1982                                  PAGE_SIZE);
1983         if (!ibdev->uar_map)
1984                 goto err_uar;
1985         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1986
1987         ibdev->dev = dev;
1988
1989         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1990         ibdev->ib_dev.owner             = THIS_MODULE;
1991         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
1992         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
1993         ibdev->num_ports                = num_ports;
1994         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1995         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
1996         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
1997
1998         if (dev->caps.userspace_caps)
1999                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
2000         else
2001                 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
2002
2003         ibdev->ib_dev.uverbs_cmd_mask   =
2004                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
2005                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
2006                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
2007                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
2008                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
2009                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
2010                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
2011                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
2012                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
2013                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
2014                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
2015                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
2016                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
2017                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
2018                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
2019                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
2020                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
2021                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
2022                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
2023                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
2024                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
2025                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
2026                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
2027
2028         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
2029         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
2030         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
2031         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
2032         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
2033         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
2034         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
2035         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
2036         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
2037         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
2038         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
2039         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
2040         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
2041         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
2042         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
2043         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
2044         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
2045         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
2046         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
2047         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
2048         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
2049         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
2050         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
2051         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
2052         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
2053         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
2054         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
2055         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
2056         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
2057         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
2058         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
2059         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
2060         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
2061         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
2062         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
2063         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
2064         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
2065         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
2066         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
2067         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
2068         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
2069
2070         if (!mlx4_is_slave(ibdev->dev)) {
2071                 ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
2072                 ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
2073                 ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
2074                 ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
2075         }
2076
2077         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2078             dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
2079                 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
2080                 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
2081                 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
2082
2083                 ibdev->ib_dev.uverbs_cmd_mask |=
2084                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
2085                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
2086         }
2087
2088         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
2089                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
2090                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
2091                 ibdev->ib_dev.uverbs_cmd_mask |=
2092                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
2093                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
2094         }
2095
2096         if (check_flow_steering_support(dev)) {
2097                 ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED;
2098                 ibdev->ib_dev.create_flow       = mlx4_ib_create_flow;
2099                 ibdev->ib_dev.destroy_flow      = mlx4_ib_destroy_flow;
2100
2101                 ibdev->ib_dev.uverbs_ex_cmd_mask        |=
2102                         (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
2103                         (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
2104         }
2105
2106         mlx4_ib_alloc_eqs(dev, ibdev);
2107
2108         spin_lock_init(&iboe->lock);
2109
2110         if (init_node_data(ibdev))
2111                 goto err_map;
2112
2113         for (i = 0; i < ibdev->num_ports; ++i) {
2114                 mutex_init(&ibdev->qp1_proxy_lock[i]);
2115                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
2116                                                 IB_LINK_LAYER_ETHERNET) {
2117                         err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
2118                         if (err)
2119                                 ibdev->counters[i] = -1;
2120                 } else {
2121                         ibdev->counters[i] = -1;
2122                 }
2123         }
2124
2125         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2126                 ib_num_ports++;
2127
2128         spin_lock_init(&ibdev->sm_lock);
2129         mutex_init(&ibdev->cap_mask_mutex);
2130
2131         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2132             ib_num_ports) {
2133                 ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
2134                 err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
2135                                             MLX4_IB_UC_STEER_QPN_ALIGN,
2136                                             &ibdev->steer_qpn_base);
2137                 if (err)
2138                         goto err_counter;
2139
2140                 ibdev->ib_uc_qpns_bitmap =
2141                         kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
2142                                 sizeof(long),
2143                                 GFP_KERNEL);
2144                 if (!ibdev->ib_uc_qpns_bitmap) {
2145                         dev_err(&dev->pdev->dev, "bit map alloc failed\n");
2146                         goto err_steer_qp_release;
2147                 }
2148
2149                 bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count);
2150
2151                 err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE(
2152                                 dev, ibdev->steer_qpn_base,
2153                                 ibdev->steer_qpn_base +
2154                                 ibdev->steer_qpn_count - 1);
2155                 if (err)
2156                         goto err_steer_free_bitmap;
2157         }
2158
2159         if (ib_register_device(&ibdev->ib_dev, NULL))
2160                 goto err_steer_free_bitmap;
2161
2162         if (mlx4_ib_mad_init(ibdev))
2163                 goto err_reg;
2164
2165         if (mlx4_ib_init_sriov(ibdev))
2166                 goto err_mad;
2167
2168         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) {
2169                 if (!iboe->nb.notifier_call) {
2170                         iboe->nb.notifier_call = mlx4_ib_netdev_event;
2171                         err = register_netdevice_notifier(&iboe->nb);
2172                         if (err) {
2173                                 iboe->nb.notifier_call = NULL;
2174                                 goto err_notif;
2175                         }
2176                 }
2177                 if (!iboe->nb_inet.notifier_call) {
2178                         iboe->nb_inet.notifier_call = mlx4_ib_inet_event;
2179                         err = register_inetaddr_notifier(&iboe->nb_inet);
2180                         if (err) {
2181                                 iboe->nb_inet.notifier_call = NULL;
2182                                 goto err_notif;
2183                         }
2184                 }
2185 #if IS_ENABLED(CONFIG_IPV6)
2186                 if (!iboe->nb_inet6.notifier_call) {
2187                         iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event;
2188                         err = register_inet6addr_notifier(&iboe->nb_inet6);
2189                         if (err) {
2190                                 iboe->nb_inet6.notifier_call = NULL;
2191                                 goto err_notif;
2192                         }
2193                 }
2194 #endif
2195                 for (i = 1 ; i <= ibdev->num_ports ; ++i)
2196                         reset_gid_table(ibdev, i);
2197                 rtnl_lock();
2198                 mlx4_ib_scan_netdevs(ibdev, NULL, 0);
2199                 rtnl_unlock();
2200                 mlx4_ib_init_gid_table(ibdev);
2201         }
2202
2203         for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
2204                 if (device_create_file(&ibdev->ib_dev.dev,
2205                                        mlx4_class_attributes[j]))
2206                         goto err_notif;
2207         }
2208
2209         ibdev->ib_active = true;
2210
2211         if (mlx4_is_mfunc(ibdev->dev))
2212                 init_pkeys(ibdev);
2213
2214         /* create paravirt contexts for any VFs which are active */
2215         if (mlx4_is_master(ibdev->dev)) {
2216                 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
2217                         if (j == mlx4_master_func_num(ibdev->dev))
2218                                 continue;
2219                         if (mlx4_is_slave_active(ibdev->dev, j))
2220                                 do_slave_init(ibdev, j, 1);
2221                 }
2222         }
2223         return ibdev;
2224
2225 err_notif:
2226         if (ibdev->iboe.nb.notifier_call) {
2227                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2228                         pr_warn("failure unregistering notifier\n");
2229                 ibdev->iboe.nb.notifier_call = NULL;
2230         }
2231         if (ibdev->iboe.nb_inet.notifier_call) {
2232                 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2233                         pr_warn("failure unregistering notifier\n");
2234                 ibdev->iboe.nb_inet.notifier_call = NULL;
2235         }
2236 #if IS_ENABLED(CONFIG_IPV6)
2237         if (ibdev->iboe.nb_inet6.notifier_call) {
2238                 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2239                         pr_warn("failure unregistering notifier\n");
2240                 ibdev->iboe.nb_inet6.notifier_call = NULL;
2241         }
2242 #endif
2243         flush_workqueue(wq);
2244
2245         mlx4_ib_close_sriov(ibdev);
2246
2247 err_mad:
2248         mlx4_ib_mad_cleanup(ibdev);
2249
2250 err_reg:
2251         ib_unregister_device(&ibdev->ib_dev);
2252
2253 err_steer_free_bitmap:
2254         kfree(ibdev->ib_uc_qpns_bitmap);
2255
2256 err_steer_qp_release:
2257         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED)
2258                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2259                                       ibdev->steer_qpn_count);
2260 err_counter:
2261         for (; i; --i)
2262                 if (ibdev->counters[i - 1] != -1)
2263                         mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
2264
2265 err_map:
2266         iounmap(ibdev->uar_map);
2267
2268 err_uar:
2269         mlx4_uar_free(dev, &ibdev->priv_uar);
2270
2271 err_pd:
2272         mlx4_pd_free(dev, ibdev->priv_pdn);
2273
2274 err_dealloc:
2275         ib_dealloc_device(&ibdev->ib_dev);
2276
2277         return NULL;
2278 }
2279
2280 int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
2281 {
2282         int offset;
2283
2284         WARN_ON(!dev->ib_uc_qpns_bitmap);
2285
2286         offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap,
2287                                          dev->steer_qpn_count,
2288                                          get_count_order(count));
2289         if (offset < 0)
2290                 return offset;
2291
2292         *qpn = dev->steer_qpn_base + offset;
2293         return 0;
2294 }
2295
2296 void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count)
2297 {
2298         if (!qpn ||
2299             dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED)
2300                 return;
2301
2302         BUG_ON(qpn < dev->steer_qpn_base);
2303
2304         bitmap_release_region(dev->ib_uc_qpns_bitmap,
2305                               qpn - dev->steer_qpn_base,
2306                               get_count_order(count));
2307 }
2308
2309 int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
2310                          int is_attach)
2311 {
2312         int err;
2313         size_t flow_size;
2314         struct ib_flow_attr *flow = NULL;
2315         struct ib_flow_spec_ib *ib_spec;
2316
2317         if (is_attach) {
2318                 flow_size = sizeof(struct ib_flow_attr) +
2319                             sizeof(struct ib_flow_spec_ib);
2320                 flow = kzalloc(flow_size, GFP_KERNEL);
2321                 if (!flow)
2322                         return -ENOMEM;
2323                 flow->port = mqp->port;
2324                 flow->num_of_specs = 1;
2325                 flow->size = flow_size;
2326                 ib_spec = (struct ib_flow_spec_ib *)(flow + 1);
2327                 ib_spec->type = IB_FLOW_SPEC_IB;
2328                 ib_spec->size = sizeof(struct ib_flow_spec_ib);
2329                 /* Add an empty rule for IB L2 */
2330                 memset(&ib_spec->mask, 0, sizeof(ib_spec->mask));
2331
2332                 err = __mlx4_ib_create_flow(&mqp->ibqp, flow,
2333                                             IB_FLOW_DOMAIN_NIC,
2334                                             MLX4_FS_REGULAR,
2335                                             &mqp->reg_id);
2336         } else {
2337                 err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id);
2338         }
2339         kfree(flow);
2340         return err;
2341 }
2342
2343 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
2344 {
2345         struct mlx4_ib_dev *ibdev = ibdev_ptr;
2346         int p;
2347
2348         mlx4_ib_close_sriov(ibdev);
2349         mlx4_ib_mad_cleanup(ibdev);
2350         ib_unregister_device(&ibdev->ib_dev);
2351         if (ibdev->iboe.nb.notifier_call) {
2352                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
2353                         pr_warn("failure unregistering notifier\n");
2354                 ibdev->iboe.nb.notifier_call = NULL;
2355         }
2356
2357         if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) {
2358                 mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
2359                                       ibdev->steer_qpn_count);
2360                 kfree(ibdev->ib_uc_qpns_bitmap);
2361         }
2362
2363         if (ibdev->iboe.nb_inet.notifier_call) {
2364                 if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet))
2365                         pr_warn("failure unregistering notifier\n");
2366                 ibdev->iboe.nb_inet.notifier_call = NULL;
2367         }
2368 #if IS_ENABLED(CONFIG_IPV6)
2369         if (ibdev->iboe.nb_inet6.notifier_call) {
2370                 if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6))
2371                         pr_warn("failure unregistering notifier\n");
2372                 ibdev->iboe.nb_inet6.notifier_call = NULL;
2373         }
2374 #endif
2375
2376         iounmap(ibdev->uar_map);
2377         for (p = 0; p < ibdev->num_ports; ++p)
2378                 if (ibdev->counters[p] != -1)
2379                         mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
2380         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
2381                 mlx4_CLOSE_PORT(dev, p);
2382
2383         mlx4_ib_free_eqs(dev, ibdev);
2384
2385         mlx4_uar_free(dev, &ibdev->priv_uar);
2386         mlx4_pd_free(dev, ibdev->priv_pdn);
2387         ib_dealloc_device(&ibdev->ib_dev);
2388 }
2389
2390 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
2391 {
2392         struct mlx4_ib_demux_work **dm = NULL;
2393         struct mlx4_dev *dev = ibdev->dev;
2394         int i;
2395         unsigned long flags;
2396         struct mlx4_active_ports actv_ports;
2397         unsigned int ports;
2398         unsigned int first_port;
2399
2400         if (!mlx4_is_master(dev))
2401                 return;
2402
2403         actv_ports = mlx4_get_active_ports(dev, slave);
2404         ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2405         first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2406
2407         dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC);
2408         if (!dm) {
2409                 pr_err("failed to allocate memory for tunneling qp update\n");
2410                 goto out;
2411         }
2412
2413         for (i = 0; i < ports; i++) {
2414                 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
2415                 if (!dm[i]) {
2416                         pr_err("failed to allocate memory for tunneling qp update work struct\n");
2417                         for (i = 0; i < dev->caps.num_ports; i++) {
2418                                 if (dm[i])
2419                                         kfree(dm[i]);
2420                         }
2421                         goto out;
2422                 }
2423         }
2424         /* initialize or tear down tunnel QPs for the slave */
2425         for (i = 0; i < ports; i++) {
2426                 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
2427                 dm[i]->port = first_port + i + 1;
2428                 dm[i]->slave = slave;
2429                 dm[i]->do_init = do_init;
2430                 dm[i]->dev = ibdev;
2431                 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
2432                 if (!ibdev->sriov.is_going_down)
2433                         queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
2434                 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
2435         }
2436 out:
2437         kfree(dm);
2438         return;
2439 }
2440
2441 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
2442                           enum mlx4_dev_event event, unsigned long param)
2443 {
2444         struct ib_event ibev;
2445         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
2446         struct mlx4_eqe *eqe = NULL;
2447         struct ib_event_work *ew;
2448         int p = 0;
2449
2450         if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
2451                 eqe = (struct mlx4_eqe *)param;
2452         else
2453                 p = (int) param;
2454
2455         switch (event) {
2456         case MLX4_DEV_EVENT_PORT_UP:
2457                 if (p > ibdev->num_ports)
2458                         return;
2459                 if (mlx4_is_master(dev) &&
2460                     rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
2461                         IB_LINK_LAYER_INFINIBAND) {
2462                         mlx4_ib_invalidate_all_guid_record(ibdev, p);
2463                 }
2464                 ibev.event = IB_EVENT_PORT_ACTIVE;
2465                 break;
2466
2467         case MLX4_DEV_EVENT_PORT_DOWN:
2468                 if (p > ibdev->num_ports)
2469                         return;
2470                 ibev.event = IB_EVENT_PORT_ERR;
2471                 break;
2472
2473         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
2474                 ibdev->ib_active = false;
2475                 ibev.event = IB_EVENT_DEVICE_FATAL;
2476                 break;
2477
2478         case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
2479                 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
2480                 if (!ew) {
2481                         pr_err("failed to allocate memory for events work\n");
2482                         break;
2483                 }
2484
2485                 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
2486                 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
2487                 ew->ib_dev = ibdev;
2488                 /* need to queue only for port owner, which uses GEN_EQE */
2489                 if (mlx4_is_master(dev))
2490                         queue_work(wq, &ew->work);
2491                 else
2492                         handle_port_mgmt_change_event(&ew->work);
2493                 return;
2494
2495         case MLX4_DEV_EVENT_SLAVE_INIT:
2496                 /* here, p is the slave id */
2497                 do_slave_init(ibdev, p, 1);
2498                 return;
2499
2500         case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
2501                 /* here, p is the slave id */
2502                 do_slave_init(ibdev, p, 0);
2503                 return;
2504
2505         default:
2506                 return;
2507         }
2508
2509         ibev.device           = ibdev_ptr;
2510         ibev.element.port_num = (u8) p;
2511
2512         ib_dispatch_event(&ibev);
2513 }
2514
2515 static struct mlx4_interface mlx4_ib_interface = {
2516         .add            = mlx4_ib_add,
2517         .remove         = mlx4_ib_remove,
2518         .event          = mlx4_ib_event,
2519         .protocol       = MLX4_PROT_IB_IPV6
2520 };
2521
2522 static int __init mlx4_ib_init(void)
2523 {
2524         int err;
2525
2526         wq = create_singlethread_workqueue("mlx4_ib");
2527         if (!wq)
2528                 return -ENOMEM;
2529
2530         err = mlx4_ib_mcg_init();
2531         if (err)
2532                 goto clean_wq;
2533
2534         err = mlx4_register_interface(&mlx4_ib_interface);
2535         if (err)
2536                 goto clean_mcg;
2537
2538         return 0;
2539
2540 clean_mcg:
2541         mlx4_ib_mcg_destroy();
2542
2543 clean_wq:
2544         destroy_workqueue(wq);
2545         return err;
2546 }
2547
2548 static void __exit mlx4_ib_cleanup(void)
2549 {
2550         mlx4_unregister_interface(&mlx4_ib_interface);
2551         mlx4_ib_mcg_destroy();
2552         destroy_workqueue(wq);
2553 }
2554
2555 module_init(mlx4_ib_init);
2556 module_exit(mlx4_ib_cleanup);