drivers/infiniband/core/nldev.c

   1 /*
   2  * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are met:
   6  *
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  * 3. Neither the names of the copyright holders nor the names of its
  13  *    contributors may be used to endorse or promote products derived from
  14  *    this software without specific prior written permission.
  15  *
  16  * Alternatively, this software may be distributed under the terms of the
  17  * GNU General Public License ("GPL") version 2 as published by the Free
  18  * Software Foundation.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/pid.h>
  35 #include <linux/pid_namespace.h>
  36 #include <net/netlink.h>
  37 #include <rdma/rdma_cm.h>
  38 #include <rdma/rdma_netlink.h>
  39
  40 #include "core_priv.h"
  41 #include "cma_priv.h"
  42
  43 static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
  44         [RDMA_NLDEV_ATTR_DEV_INDEX]     = { .type = NLA_U32 },
  45         [RDMA_NLDEV_ATTR_DEV_NAME]      = { .type = NLA_NUL_STRING,
  46                                             .len = IB_DEVICE_NAME_MAX - 1},
  47         [RDMA_NLDEV_ATTR_PORT_INDEX]    = { .type = NLA_U32 },
  48         [RDMA_NLDEV_ATTR_FW_VERSION]    = { .type = NLA_NUL_STRING,
  49                                             .len = IB_FW_VERSION_NAME_MAX - 1},
  50         [RDMA_NLDEV_ATTR_NODE_GUID]     = { .type = NLA_U64 },
  51         [RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 },
  52         [RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 },
  53         [RDMA_NLDEV_ATTR_LID]           = { .type = NLA_U32 },
  54         [RDMA_NLDEV_ATTR_SM_LID]        = { .type = NLA_U32 },
  55         [RDMA_NLDEV_ATTR_LMC]           = { .type = NLA_U8 },
  56         [RDMA_NLDEV_ATTR_PORT_STATE]    = { .type = NLA_U8 },
  57         [RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = { .type = NLA_U8 },
  58         [RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = { .type = NLA_U8 },
  59         [RDMA_NLDEV_ATTR_RES_SUMMARY]   = { .type = NLA_NESTED },
  60         [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY]     = { .type = NLA_NESTED },
  61         [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME] = { .type = NLA_NUL_STRING,
  62                                              .len = 16 },
  63         [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR] = { .type = NLA_U64 },
  64         [RDMA_NLDEV_ATTR_RES_QP]                = { .type = NLA_NESTED },
  65         [RDMA_NLDEV_ATTR_RES_QP_ENTRY]          = { .type = NLA_NESTED },
  66         [RDMA_NLDEV_ATTR_RES_LQPN]              = { .type = NLA_U32 },
  67         [RDMA_NLDEV_ATTR_RES_RQPN]              = { .type = NLA_U32 },
  68         [RDMA_NLDEV_ATTR_RES_RQ_PSN]            = { .type = NLA_U32 },
  69         [RDMA_NLDEV_ATTR_RES_SQ_PSN]            = { .type = NLA_U32 },
  70         [RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = { .type = NLA_U8 },
  71         [RDMA_NLDEV_ATTR_RES_TYPE]              = { .type = NLA_U8 },
  72         [RDMA_NLDEV_ATTR_RES_STATE]             = { .type = NLA_U8 },
  73         [RDMA_NLDEV_ATTR_RES_PID]               = { .type = NLA_U32 },
  74         [RDMA_NLDEV_ATTR_RES_KERN_NAME]         = { .type = NLA_NUL_STRING,
  75                                                     .len = TASK_COMM_LEN },
  76         [RDMA_NLDEV_ATTR_RES_CM_ID]             = { .type = NLA_NESTED },
  77         [RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY]       = { .type = NLA_NESTED },
  78         [RDMA_NLDEV_ATTR_RES_PS]                = { .type = NLA_U32 },
  79         [RDMA_NLDEV_ATTR_RES_SRC_ADDR]  = {
  80                         .len = sizeof(struct __kernel_sockaddr_storage) },
  81         [RDMA_NLDEV_ATTR_RES_DST_ADDR]  = {
  82                         .len = sizeof(struct __kernel_sockaddr_storage) },
  83         [RDMA_NLDEV_ATTR_RES_CQ]                = { .type = NLA_NESTED },
  84         [RDMA_NLDEV_ATTR_RES_CQ_ENTRY]          = { .type = NLA_NESTED },
  85         [RDMA_NLDEV_ATTR_RES_CQE]               = { .type = NLA_U32 },
  86         [RDMA_NLDEV_ATTR_RES_USECNT]            = { .type = NLA_U64 },
  87         [RDMA_NLDEV_ATTR_RES_POLL_CTX]          = { .type = NLA_U8 },
  88         [RDMA_NLDEV_ATTR_RES_MR]                = { .type = NLA_NESTED },
  89         [RDMA_NLDEV_ATTR_RES_MR_ENTRY]          = { .type = NLA_NESTED },
  90         [RDMA_NLDEV_ATTR_RES_RKEY]              = { .type = NLA_U32 },
  91         [RDMA_NLDEV_ATTR_RES_LKEY]              = { .type = NLA_U32 },
  92         [RDMA_NLDEV_ATTR_RES_IOVA]              = { .type = NLA_U64 },
  93         [RDMA_NLDEV_ATTR_RES_MRLEN]             = { .type = NLA_U64 },
  94         [RDMA_NLDEV_ATTR_RES_PD]                = { .type = NLA_NESTED },
  95         [RDMA_NLDEV_ATTR_RES_PD_ENTRY]          = { .type = NLA_NESTED },
  96         [RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]    = { .type = NLA_U32 },
  97         [RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY] = { .type = NLA_U32 },
  98         [RDMA_NLDEV_ATTR_NDEV_INDEX]            = { .type = NLA_U32 },
  99         [RDMA_NLDEV_ATTR_NDEV_NAME]             = { .type = NLA_NUL_STRING,
 100                                                     .len = IFNAMSIZ },
 101         [RDMA_NLDEV_ATTR_DRIVER]                = { .type = NLA_NESTED },
 102         [RDMA_NLDEV_ATTR_DRIVER_ENTRY]          = { .type = NLA_NESTED },
 103         [RDMA_NLDEV_ATTR_DRIVER_STRING]         = { .type = NLA_NUL_STRING,
 104                                     .len = RDMA_NLDEV_ATTR_ENTRY_STRLEN },
 105         [RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE]     = { .type = NLA_U8 },
 106         [RDMA_NLDEV_ATTR_DRIVER_S32]            = { .type = NLA_S32 },
 107         [RDMA_NLDEV_ATTR_DRIVER_U32]            = { .type = NLA_U32 },
 108         [RDMA_NLDEV_ATTR_DRIVER_S64]            = { .type = NLA_S64 },
 109         [RDMA_NLDEV_ATTR_DRIVER_U64]            = { .type = NLA_U64 },
 110 };
 111
 112 static int put_driver_name_print_type(struct sk_buff *msg, const char *name,
 113                                       enum rdma_nldev_print_type print_type)
 114 {
 115         if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, name))
 116                 return -EMSGSIZE;
 117         if (print_type != RDMA_NLDEV_PRINT_TYPE_UNSPEC &&
 118             nla_put_u8(msg, RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE, print_type))
 119                 return -EMSGSIZE;
 120
 121         return 0;
 122 }
 123
 124 static int _rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name,
 125                                    enum rdma_nldev_print_type print_type,
 126                                    u32 value)
 127 {
 128         if (put_driver_name_print_type(msg, name, print_type))
 129                 return -EMSGSIZE;
 130         if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DRIVER_U32, value))
 131                 return -EMSGSIZE;
 132
 133         return 0;
 134 }
 135
 136 static int _rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name,
 137                                    enum rdma_nldev_print_type print_type,
 138                                    u64 value)
 139 {
 140         if (put_driver_name_print_type(msg, name, print_type))
 141                 return -EMSGSIZE;
 142         if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_DRIVER_U64, value,
 143                               RDMA_NLDEV_ATTR_PAD))
 144                 return -EMSGSIZE;
 145
 146         return 0;
 147 }
 148
 149 int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value)
 150 {
 151         return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC,
 152                                        value);
 153 }
 154 EXPORT_SYMBOL(rdma_nl_put_driver_u32);
 155
 156 int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name,
 157                                u32 value)
 158 {
 159         return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX,
 160                                        value);
 161 }
 162 EXPORT_SYMBOL(rdma_nl_put_driver_u32_hex);
 163
 164 int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value)
 165 {
 166         return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC,
 167                                        value);
 168 }
 169 EXPORT_SYMBOL(rdma_nl_put_driver_u64);
 170
 171 int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name, u64 value)
 172 {
 173         return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX,
 174                                        value);
 175 }
 176 EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex);
 177
 178 static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
 179 {
 180         if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index))
 181                 return -EMSGSIZE;
 182         if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, device->name))
 183                 return -EMSGSIZE;
 184
 185         return 0;
 186 }
 187
 188 static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
 189 {
 190         char fw[IB_FW_VERSION_NAME_MAX];
 191
 192         if (fill_nldev_handle(msg, device))
 193                 return -EMSGSIZE;
 194
 195         if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device)))
 196                 return -EMSGSIZE;
 197
 198         BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64));
 199         if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
 200                               device->attrs.device_cap_flags,
 201                               RDMA_NLDEV_ATTR_PAD))
 202                 return -EMSGSIZE;
 203
 204         ib_get_device_fw_str(device, fw);
 205         /* Device without FW has strlen(fw) = 0 */
 206         if (strlen(fw) && nla_put_string(msg, RDMA_NLDEV_ATTR_FW_VERSION, fw))
 207                 return -EMSGSIZE;
 208
 209         if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_NODE_GUID,
 210                               be64_to_cpu(device->node_guid),
 211                               RDMA_NLDEV_ATTR_PAD))
 212                 return -EMSGSIZE;
 213         if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SYS_IMAGE_GUID,
 214                               be64_to_cpu(device->attrs.sys_image_guid),
 215                               RDMA_NLDEV_ATTR_PAD))
 216                 return -EMSGSIZE;
 217         if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type))
 218                 return -EMSGSIZE;
 219         return 0;
 220 }
 221
 222 static int fill_port_info(struct sk_buff *msg,
 223                           struct ib_device *device, u32 port,
 224                           const struct net *net)
 225 {
 226         struct net_device *netdev = NULL;
 227         struct ib_port_attr attr;
 228         int ret;
 229
 230         if (fill_nldev_handle(msg, device))
 231                 return -EMSGSIZE;
 232
 233         if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
 234                 return -EMSGSIZE;
 235
 236         ret = ib_query_port(device, port, &attr);
 237         if (ret)
 238                 return ret;
 239
 240         if (rdma_protocol_ib(device, port)) {
 241                 BUILD_BUG_ON(sizeof(attr.port_cap_flags) > sizeof(u64));
 242                 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
 243                                       (u64)attr.port_cap_flags,
 244                                       RDMA_NLDEV_ATTR_PAD))
 245                         return -EMSGSIZE;
 246                 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX,
 247                                       attr.subnet_prefix, RDMA_NLDEV_ATTR_PAD))
 248                         return -EMSGSIZE;
 249                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid))
 250                         return -EMSGSIZE;
 251                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_SM_LID, attr.sm_lid))
 252                         return -EMSGSIZE;
 253                 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_LMC, attr.lmc))
 254                         return -EMSGSIZE;
 255         }
 256         if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_STATE, attr.state))
 257                 return -EMSGSIZE;
 258         if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_PHYS_STATE, attr.phys_state))
 259                 return -EMSGSIZE;
 260
 261         if (device->get_netdev)
 262                 netdev = device->get_netdev(device, port);
 263
 264         if (netdev && net_eq(dev_net(netdev), net)) {
 265                 ret = nla_put_u32(msg,
 266                                   RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex);
 267                 if (ret)
 268                         goto out;
 269                 ret = nla_put_string(msg,
 270                                      RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name);
 271         }
 272
 273 out:
 274         if (netdev)
 275                 dev_put(netdev);
 276         return ret;
 277 }
 278
 279 static int fill_res_info_entry(struct sk_buff *msg,
 280                                const char *name, u64 curr)
 281 {
 282         struct nlattr *entry_attr;
 283
 284         entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY);
 285         if (!entry_attr)
 286                 return -EMSGSIZE;
 287
 288         if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME, name))
 289                 goto err;
 290         if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr,
 291                               RDMA_NLDEV_ATTR_PAD))
 292                 goto err;
 293
 294         nla_nest_end(msg, entry_attr);
 295         return 0;
 296
 297 err:
 298         nla_nest_cancel(msg, entry_attr);
 299         return -EMSGSIZE;
 300 }
 301
 302 static int fill_res_info(struct sk_buff *msg, struct ib_device *device)
 303 {
 304         static const char * const names[RDMA_RESTRACK_MAX] = {
 305                 [RDMA_RESTRACK_PD] = "pd",
 306                 [RDMA_RESTRACK_CQ] = "cq",
 307                 [RDMA_RESTRACK_QP] = "qp",
 308                 [RDMA_RESTRACK_CM_ID] = "cm_id",
 309                 [RDMA_RESTRACK_MR] = "mr",
 310         };
 311
 312         struct rdma_restrack_root *res = &device->res;
 313         struct nlattr *table_attr;
 314         int ret, i, curr;
 315
 316         if (fill_nldev_handle(msg, device))
 317                 return -EMSGSIZE;
 318
 319         table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_SUMMARY);
 320         if (!table_attr)
 321                 return -EMSGSIZE;
 322
 323         for (i = 0; i < RDMA_RESTRACK_MAX; i++) {
 324                 if (!names[i])
 325                         continue;
 326                 curr = rdma_restrack_count(res, i, task_active_pid_ns(current));
 327                 ret = fill_res_info_entry(msg, names[i], curr);
 328                 if (ret)
 329                         goto err;
 330         }
 331
 332         nla_nest_end(msg, table_attr);
 333         return 0;
 334
 335 err:
 336         nla_nest_cancel(msg, table_attr);
 337         return ret;
 338 }
 339
 340 static int fill_res_name_pid(struct sk_buff *msg,
 341                              struct rdma_restrack_entry *res)
 342 {
 343         /*
 344          * For user resources, user is should read /proc/PID/comm to get the
 345          * name of the task file.
 346          */
 347         if (rdma_is_kernel_res(res)) {
 348                 if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_KERN_NAME,
 349                     res->kern_name))
 350                         return -EMSGSIZE;
 351         } else {
 352                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PID,
 353                     task_pid_vnr(res->task)))
 354                         return -EMSGSIZE;
 355         }
 356         return 0;
 357 }
 358
 359 static int fill_res_qp_entry(struct sk_buff *msg, struct netlink_callback *cb,
 360                              struct rdma_restrack_entry *res, uint32_t port)
 361 {
 362         struct ib_qp *qp = container_of(res, struct ib_qp, res);
 363         struct rdma_restrack_root *resroot = &qp->device->res;
 364         struct ib_qp_init_attr qp_init_attr;
 365         struct nlattr *entry_attr;
 366         struct ib_qp_attr qp_attr;
 367         int ret;
 368
 369         ret = ib_query_qp(qp, &qp_attr, 0, &qp_init_attr);
 370         if (ret)
 371                 return ret;
 372
 373         if (port && port != qp_attr.port_num)
 374                 return 0;
 375
 376         entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY);
 377         if (!entry_attr)
 378                 goto out;
 379
 380         /* In create_qp() port is not set yet */
 381         if (qp_attr.port_num &&
 382             nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp_attr.port_num))
 383                 goto err;
 384
 385         if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num))
 386                 goto err;
 387         if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC) {
 388                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQPN,
 389                                 qp_attr.dest_qp_num))
 390                         goto err;
 391                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQ_PSN,
 392                                 qp_attr.rq_psn))
 393                         goto err;
 394         }
 395
 396         if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SQ_PSN, qp_attr.sq_psn))
 397                 goto err;
 398
 399         if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC ||
 400             qp->qp_type == IB_QPT_XRC_INI || qp->qp_type == IB_QPT_XRC_TGT) {
 401                 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE,
 402                                qp_attr.path_mig_state))
 403                         goto err;
 404         }
 405         if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, qp->qp_type))
 406                 goto err;
 407         if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, qp_attr.qp_state))
 408                 goto err;
 409
 410         if (fill_res_name_pid(msg, res))
 411                 goto err;
 412
 413         if (resroot->fill_res_entry(msg, res))
 414                 goto err;
 415
 416         nla_nest_end(msg, entry_attr);
 417         return 0;
 418
 419 err:
 420         nla_nest_cancel(msg, entry_attr);
 421 out:
 422         return -EMSGSIZE;
 423 }
 424
 425 static int fill_res_cm_id_entry(struct sk_buff *msg,
 426                                 struct netlink_callback *cb,
 427                                 struct rdma_restrack_entry *res, uint32_t port)
 428 {
 429         struct rdma_id_private *id_priv =
 430                                 container_of(res, struct rdma_id_private, res);
 431         struct rdma_restrack_root *resroot = &id_priv->id.device->res;
 432         struct rdma_cm_id *cm_id = &id_priv->id;
 433         struct nlattr *entry_attr;
 434
 435         if (port && port != cm_id->port_num)
 436                 return 0;
 437
 438         entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY);
 439         if (!entry_attr)
 440                 goto out;
 441
 442         if (cm_id->port_num &&
 443             nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, cm_id->port_num))
 444                 goto err;
 445
 446         if (id_priv->qp_num) {
 447                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, id_priv->qp_num))
 448                         goto err;
 449                 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, cm_id->qp_type))
 450                         goto err;
 451         }
 452
 453         if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PS, cm_id->ps))
 454                 goto err;
 455
 456         if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, id_priv->state))
 457                 goto err;
 458
 459         if (cm_id->route.addr.src_addr.ss_family &&
 460             nla_put(msg, RDMA_NLDEV_ATTR_RES_SRC_ADDR,
 461                     sizeof(cm_id->route.addr.src_addr),
 462                     &cm_id->route.addr.src_addr))
 463                 goto err;
 464         if (cm_id->route.addr.dst_addr.ss_family &&
 465             nla_put(msg, RDMA_NLDEV_ATTR_RES_DST_ADDR,
 466                     sizeof(cm_id->route.addr.dst_addr),
 467                     &cm_id->route.addr.dst_addr))
 468                 goto err;
 469
 470         if (fill_res_name_pid(msg, res))
 471                 goto err;
 472
 473         if (resroot->fill_res_entry(msg, res))
 474                 goto err;
 475
 476         nla_nest_end(msg, entry_attr);
 477         return 0;
 478
 479 err:
 480         nla_nest_cancel(msg, entry_attr);
 481 out:
 482         return -EMSGSIZE;
 483 }
 484
 485 static int fill_res_cq_entry(struct sk_buff *msg, struct netlink_callback *cb,
 486                              struct rdma_restrack_entry *res, uint32_t port)
 487 {
 488         struct ib_cq *cq = container_of(res, struct ib_cq, res);
 489         struct rdma_restrack_root *resroot = &cq->device->res;
 490         struct nlattr *entry_attr;
 491
 492         entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_CQ_ENTRY);
 493         if (!entry_attr)
 494                 goto out;
 495
 496         if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
 497                 goto err;
 498         if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
 499                               atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD))
 500                 goto err;
 501
 502         /* Poll context is only valid for kernel CQs */
 503         if (rdma_is_kernel_res(res) &&
 504             nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx))
 505                 goto err;
 506
 507         if (fill_res_name_pid(msg, res))
 508                 goto err;
 509
 510         if (resroot->fill_res_entry(msg, res))
 511                 goto err;
 512
 513         nla_nest_end(msg, entry_attr);
 514         return 0;
 515
 516 err:
 517         nla_nest_cancel(msg, entry_attr);
 518 out:
 519         return -EMSGSIZE;
 520 }
 521
 522 static int fill_res_mr_entry(struct sk_buff *msg, struct netlink_callback *cb,
 523                              struct rdma_restrack_entry *res, uint32_t port)
 524 {
 525         struct ib_mr *mr = container_of(res, struct ib_mr, res);
 526         struct rdma_restrack_root *resroot = &mr->pd->device->res;
 527         struct nlattr *entry_attr;
 528
 529         entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_MR_ENTRY);
 530         if (!entry_attr)
 531                 goto out;
 532
 533         if (netlink_capable(cb->skb, CAP_NET_ADMIN)) {
 534                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RKEY, mr->rkey))
 535                         goto err;
 536                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey))
 537                         goto err;
 538         }
 539
 540         if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length,
 541                               RDMA_NLDEV_ATTR_PAD))
 542                 goto err;
 543
 544         if (fill_res_name_pid(msg, res))
 545                 goto err;
 546
 547         if (resroot->fill_res_entry(msg, res))
 548                 goto err;
 549
 550         nla_nest_end(msg, entry_attr);
 551         return 0;
 552
 553 err:
 554         nla_nest_cancel(msg, entry_attr);
 555 out:
 556         return -EMSGSIZE;
 557 }
 558
 559 static int fill_res_pd_entry(struct sk_buff *msg, struct netlink_callback *cb,
 560                              struct rdma_restrack_entry *res, uint32_t port)
 561 {
 562         struct ib_pd *pd = container_of(res, struct ib_pd, res);
 563         struct rdma_restrack_root *resroot = &pd->device->res;
 564         struct nlattr *entry_attr;
 565
 566         entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_PD_ENTRY);
 567         if (!entry_attr)
 568                 goto out;
 569
 570         if (netlink_capable(cb->skb, CAP_NET_ADMIN)) {
 571                 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY,
 572                                 pd->local_dma_lkey))
 573                         goto err;
 574                 if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) &&
 575                     nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY,
 576                                 pd->unsafe_global_rkey))
 577                         goto err;
 578         }
 579         if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
 580                               atomic_read(&pd->usecnt), RDMA_NLDEV_ATTR_PAD))
 581                 goto err;
 582         if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) &&
 583             nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY,
 584                         pd->unsafe_global_rkey))
 585                 goto err;
 586
 587         if (fill_res_name_pid(msg, res))
 588                 goto err;
 589
 590         if (resroot->fill_res_entry(msg, res))
 591                 goto err;
 592
 593         nla_nest_end(msg, entry_attr);
 594         return 0;
 595
 596 err:
 597         nla_nest_cancel(msg, entry_attr);
 598 out:
 599         return -EMSGSIZE;
 600 }
 601
 602 static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 603                           struct netlink_ext_ack *extack)
 604 {
 605         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
 606         struct ib_device *device;
 607         struct sk_buff *msg;
 608         u32 index;
 609         int err;
 610
 611         err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
 612                           nldev_policy, extack);
 613         if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
 614                 return -EINVAL;
 615
 616         index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 617
 618         device = ib_device_get_by_index(index);
 619         if (!device)
 620                 return -EINVAL;
 621
 622         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 623         if (!msg) {
 624                 err = -ENOMEM;
 625                 goto err;
 626         }
 627
 628         nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
 629                         RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
 630                         0, 0);
 631
 632         err = fill_dev_info(msg, device);
 633         if (err)
 634                 goto err_free;
 635
 636         nlmsg_end(msg, nlh);
 637
 638         put_device(&device->dev);
 639         return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
 640
 641 err_free:
 642         nlmsg_free(msg);
 643 err:
 644         put_device(&device->dev);
 645         return err;
 646 }
 647
 648 static int _nldev_get_dumpit(struct ib_device *device,
 649                              struct sk_buff *skb,
 650                              struct netlink_callback *cb,
 651                              unsigned int idx)
 652 {
 653         int start = cb->args[0];
 654         struct nlmsghdr *nlh;
 655
 656         if (idx < start)
 657                 return 0;
 658
 659         nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
 660                         RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
 661                         0, NLM_F_MULTI);
 662
 663         if (fill_dev_info(skb, device)) {
 664                 nlmsg_cancel(skb, nlh);
 665                 goto out;
 666         }
 667
 668         nlmsg_end(skb, nlh);
 669
 670         idx++;
 671
 672 out:    cb->args[0] = idx;
 673         return skb->len;
 674 }
 675
 676 static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
 677 {
 678         /*
 679          * There is no need to take lock, because
 680          * we are relying on ib_core's lists_rwsem
 681          */
 682         return ib_enum_all_devs(_nldev_get_dumpit, skb, cb);
 683 }
 684
 685 static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 686                                struct netlink_ext_ack *extack)
 687 {
 688         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
 689         struct ib_device *device;
 690         struct sk_buff *msg;
 691         u32 index;
 692         u32 port;
 693         int err;
 694
 695         err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
 696                           nldev_policy, extack);
 697         if (err ||
 698             !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
 699             !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
 700                 return -EINVAL;
 701
 702         index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 703         device = ib_device_get_by_index(index);
 704         if (!device)
 705                 return -EINVAL;
 706
 707         port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
 708         if (!rdma_is_port_valid(device, port)) {
 709                 err = -EINVAL;
 710                 goto err;
 711         }
 712
 713         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 714         if (!msg) {
 715                 err = -ENOMEM;
 716                 goto err;
 717         }
 718
 719         nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
 720                         RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
 721                         0, 0);
 722
 723         err = fill_port_info(msg, device, port, sock_net(skb->sk));
 724         if (err)
 725                 goto err_free;
 726
 727         nlmsg_end(msg, nlh);
 728         put_device(&device->dev);
 729
 730         return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
 731
 732 err_free:
 733         nlmsg_free(msg);
 734 err:
 735         put_device(&device->dev);
 736         return err;
 737 }
 738
 739 static int nldev_port_get_dumpit(struct sk_buff *skb,
 740                                  struct netlink_callback *cb)
 741 {
 742         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
 743         struct ib_device *device;
 744         int start = cb->args[0];
 745         struct nlmsghdr *nlh;
 746         u32 idx = 0;
 747         u32 ifindex;
 748         int err;
 749         u32 p;
 750
 751         err = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
 752                           nldev_policy, NULL);
 753         if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
 754                 return -EINVAL;
 755
 756         ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 757         device = ib_device_get_by_index(ifindex);
 758         if (!device)
 759                 return -EINVAL;
 760
 761         for (p = rdma_start_port(device); p <= rdma_end_port(device); ++p) {
 762                 /*
 763                  * The dumpit function returns all information from specific
 764                  * index. This specific index is taken from the netlink
 765                  * messages request sent by user and it is available
 766                  * in cb->args[0].
 767                  *
 768                  * Usually, the user doesn't fill this field and it causes
 769                  * to return everything.
 770                  *
 771                  */
 772                 if (idx < start) {
 773                         idx++;
 774                         continue;
 775                 }
 776
 777                 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid,
 778                                 cb->nlh->nlmsg_seq,
 779                                 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
 780                                                  RDMA_NLDEV_CMD_PORT_GET),
 781                                 0, NLM_F_MULTI);
 782
 783                 if (fill_port_info(skb, device, p, sock_net(skb->sk))) {
 784                         nlmsg_cancel(skb, nlh);
 785                         goto out;
 786                 }
 787                 idx++;
 788                 nlmsg_end(skb, nlh);
 789         }
 790
 791 out:
 792         put_device(&device->dev);
 793         cb->args[0] = idx;
 794         return skb->len;
 795 }
 796
 797 static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 798                               struct netlink_ext_ack *extack)
 799 {
 800         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
 801         struct ib_device *device;
 802         struct sk_buff *msg;
 803         u32 index;
 804         int ret;
 805
 806         ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
 807                           nldev_policy, extack);
 808         if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
 809                 return -EINVAL;
 810
 811         index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 812         device = ib_device_get_by_index(index);
 813         if (!device)
 814                 return -EINVAL;
 815
 816         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 817         if (!msg) {
 818                 ret = -ENOMEM;
 819                 goto err;
 820         }
 821
 822         nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
 823                         RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
 824                         0, 0);
 825
 826         ret = fill_res_info(msg, device);
 827         if (ret)
 828                 goto err_free;
 829
 830         nlmsg_end(msg, nlh);
 831         put_device(&device->dev);
 832         return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
 833
 834 err_free:
 835         nlmsg_free(msg);
 836 err:
 837         put_device(&device->dev);
 838         return ret;
 839 }
 840
 841 static int _nldev_res_get_dumpit(struct ib_device *device,
 842                                  struct sk_buff *skb,
 843                                  struct netlink_callback *cb,
 844                                  unsigned int idx)
 845 {
 846         int start = cb->args[0];
 847         struct nlmsghdr *nlh;
 848
 849         if (idx < start)
 850                 return 0;
 851
 852         nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
 853                         RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
 854                         0, NLM_F_MULTI);
 855
 856         if (fill_res_info(skb, device)) {
 857                 nlmsg_cancel(skb, nlh);
 858                 goto out;
 859         }
 860
 861         nlmsg_end(skb, nlh);
 862
 863         idx++;
 864
 865 out:
 866         cb->args[0] = idx;
 867         return skb->len;
 868 }
 869
 870 static int nldev_res_get_dumpit(struct sk_buff *skb,
 871                                 struct netlink_callback *cb)
 872 {
 873         return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb);
 874 }
 875
 876 struct nldev_fill_res_entry {
 877         int (*fill_res_func)(struct sk_buff *msg, struct netlink_callback *cb,
 878                              struct rdma_restrack_entry *res, u32 port);
 879         enum rdma_nldev_attr nldev_attr;
 880         enum rdma_nldev_command nldev_cmd;
 881 };
 882
 883 static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
 884         [RDMA_RESTRACK_QP] = {
 885                 .fill_res_func = fill_res_qp_entry,
 886                 .nldev_cmd = RDMA_NLDEV_CMD_RES_QP_GET,
 887                 .nldev_attr = RDMA_NLDEV_ATTR_RES_QP,
 888         },
 889         [RDMA_RESTRACK_CM_ID] = {
 890                 .fill_res_func = fill_res_cm_id_entry,
 891                 .nldev_cmd = RDMA_NLDEV_CMD_RES_CM_ID_GET,
 892                 .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
 893         },
 894         [RDMA_RESTRACK_CQ] = {
 895                 .fill_res_func = fill_res_cq_entry,
 896                 .nldev_cmd = RDMA_NLDEV_CMD_RES_CQ_GET,
 897                 .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
 898         },
 899         [RDMA_RESTRACK_MR] = {
 900                 .fill_res_func = fill_res_mr_entry,
 901                 .nldev_cmd = RDMA_NLDEV_CMD_RES_MR_GET,
 902                 .nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
 903         },
 904         [RDMA_RESTRACK_PD] = {
 905                 .fill_res_func = fill_res_pd_entry,
 906                 .nldev_cmd = RDMA_NLDEV_CMD_RES_PD_GET,
 907                 .nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
 908         },
 909 };
 910
 911 static int res_get_common_dumpit(struct sk_buff *skb,
 912                                  struct netlink_callback *cb,
 913                                  enum rdma_restrack_type res_type)
 914 {
 915         const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
 916         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
 917         struct rdma_restrack_entry *res;
 918         int err, ret = 0, idx = 0;
 919         struct nlattr *table_attr;
 920         struct ib_device *device;
 921         int start = cb->args[0];
 922         struct nlmsghdr *nlh;
 923         u32 index, port = 0;
 924         bool filled = false;
 925
 926         err = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
 927                           nldev_policy, NULL);
 928         /*
 929          * Right now, we are expecting the device index to get res information,
 930          * but it is possible to extend this code to return all devices in
 931          * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX.
 932          * if it doesn't exist, we will iterate over all devices.
 933          *
 934          * But it is not needed for now.
 935          */
 936         if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
 937                 return -EINVAL;
 938
 939         index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 940         device = ib_device_get_by_index(index);
 941         if (!device)
 942                 return -EINVAL;
 943
 944         /*
 945          * If no PORT_INDEX is supplied, we will return all QPs from that device
 946          */
 947         if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
 948                 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
 949                 if (!rdma_is_port_valid(device, port)) {
 950                         ret = -EINVAL;
 951                         goto err_index;
 952                 }
 953         }
 954
 955         nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
 956                         RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, fe->nldev_cmd),
 957                         0, NLM_F_MULTI);
 958
 959         if (fill_nldev_handle(skb, device)) {
 960                 ret = -EMSGSIZE;
 961                 goto err;
 962         }
 963
 964         table_attr = nla_nest_start(skb, fe->nldev_attr);
 965         if (!table_attr) {
 966                 ret = -EMSGSIZE;
 967                 goto err;
 968         }
 969
 970         down_read(&device->res.rwsem);
 971         hash_for_each_possible(device->res.hash, res, node, res_type) {
 972                 if (idx < start)
 973                         goto next;
 974
 975                 if ((rdma_is_kernel_res(res) &&
 976                      task_active_pid_ns(current) != &init_pid_ns) ||
 977                     (!rdma_is_kernel_res(res) && task_active_pid_ns(current) !=
 978                      task_active_pid_ns(res->task)))
 979                         /*
 980                          * 1. Kern resources should be visible in init
 981                          *    namspace only
 982                          * 2. Present only resources visible in the current
 983                          *    namespace
 984                          */
 985                         goto next;
 986
 987                 if (!rdma_restrack_get(res))
 988                         /*
 989                          * Resource is under release now, but we are not
 990                          * relesing lock now, so it will be released in
 991                          * our next pass, once we will get ->next pointer.
 992                          */
 993                         goto next;
 994
 995                 filled = true;
 996
 997                 up_read(&device->res.rwsem);
 998                 ret = fe->fill_res_func(skb, cb, res, port);
 999                 down_read(&device->res.rwsem);
1000                 /*
1001                  * Return resource back, but it won't be released till
1002                  * the &device->res.rwsem will be released for write.
1003                  */
1004                 rdma_restrack_put(res);
1005
1006                 if (ret == -EMSGSIZE)
1007                         /*
1008                          * There is a chance to optimize here.
1009                          * It can be done by using list_prepare_entry
1010                          * and list_for_each_entry_continue afterwards.
1011                          */
1012                         break;
1013                 if (ret)
1014                         goto res_err;
1015 next:           idx++;
1016         }
1017         up_read(&device->res.rwsem);
1018
1019         nla_nest_end(skb, table_attr);
1020         nlmsg_end(skb, nlh);
1021         cb->args[0] = idx;
1022
1023         /*
1024          * No more entries to fill, cancel the message and
1025          * return 0 to mark end of dumpit.
1026          */
1027         if (!filled)
1028                 goto err;
1029
1030         put_device(&device->dev);
1031         return skb->len;
1032
1033 res_err:
1034         nla_nest_cancel(skb, table_attr);
1035         up_read(&device->res.rwsem);
1036
1037 err:
1038         nlmsg_cancel(skb, nlh);
1039
1040 err_index:
1041         put_device(&device->dev);
1042         return ret;
1043 }
1044
1045 static int nldev_res_get_qp_dumpit(struct sk_buff *skb,
1046                                    struct netlink_callback *cb)
1047 {
1048         return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_QP);
1049 }
1050
1051 static int nldev_res_get_cm_id_dumpit(struct sk_buff *skb,
1052                                       struct netlink_callback *cb)
1053 {
1054         return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CM_ID);
1055 }
1056
1057 static int nldev_res_get_cq_dumpit(struct sk_buff *skb,
1058                                    struct netlink_callback *cb)
1059 {
1060         return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CQ);
1061 }
1062
1063 static int nldev_res_get_mr_dumpit(struct sk_buff *skb,
1064                                    struct netlink_callback *cb)
1065 {
1066         return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR);
1067 }
1068
1069 static int nldev_res_get_pd_dumpit(struct sk_buff *skb,
1070                                    struct netlink_callback *cb)
1071 {
1072         return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_PD);
1073 }
1074
1075 static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
1076         [RDMA_NLDEV_CMD_GET] = {
1077                 .doit = nldev_get_doit,
1078                 .dump = nldev_get_dumpit,
1079         },
1080         [RDMA_NLDEV_CMD_PORT_GET] = {
1081                 .doit = nldev_port_get_doit,
1082                 .dump = nldev_port_get_dumpit,
1083         },
1084         [RDMA_NLDEV_CMD_RES_GET] = {
1085                 .doit = nldev_res_get_doit,
1086                 .dump = nldev_res_get_dumpit,
1087         },
1088         [RDMA_NLDEV_CMD_RES_QP_GET] = {
1089                 .dump = nldev_res_get_qp_dumpit,
1090                 /*
1091                  * .doit is not implemented yet for two reasons:
1092                  * 1. It is not needed yet.
1093                  * 2. There is a need to provide identifier, while it is easy
1094                  * for the QPs (device index + port index + LQPN), it is not
1095                  * the case for the rest of resources (PD and CQ). Because it
1096                  * is better to provide similar interface for all resources,
1097                  * let's wait till we will have other resources implemented
1098                  * too.
1099                  */
1100         },
1101         [RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
1102                 .dump = nldev_res_get_cm_id_dumpit,
1103         },
1104         [RDMA_NLDEV_CMD_RES_CQ_GET] = {
1105                 .dump = nldev_res_get_cq_dumpit,
1106         },
1107         [RDMA_NLDEV_CMD_RES_MR_GET] = {
1108                 .dump = nldev_res_get_mr_dumpit,
1109         },
1110         [RDMA_NLDEV_CMD_RES_PD_GET] = {
1111                 .dump = nldev_res_get_pd_dumpit,
1112         },
1113 };
1114
1115 void __init nldev_init(void)
1116 {
1117         rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table);
1118 }
1119
1120 void __exit nldev_exit(void)
1121 {
1122         rdma_nl_unregister(RDMA_NL_NLDEV);
1123 }
1124
1125 MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5);