linux/net/tipc/netlink.c
<<
>>
Prefs 
   1/*
   2 * net/tipc/netlink.c: TIPC configuration handling
   3 *
   4 * Copyright (c) 2005-2006, 2014, Ericsson AB
   5 * Copyright (c) 2005-2007, Wind River Systems
   6 * All rights reserved.
   7 *
   8 * Redistribution and use in source and binary forms, with or without
   9 * modification, are permitted provided that the following conditions are met:
  10 *
  11 * 1. Redistributions of source code must retain the above copyright
  12 *    notice, this list of conditions and the following disclaimer.
  13 * 2. Redistributions in binary form must reproduce the above copyright
  14 *    notice, this list of conditions and the following disclaimer in the
  15 *    documentation and/or other materials provided with the distribution.
  16 * 3. Neither the names of the copyright holders nor the names of its
  17 *    contributors may be used to endorse or promote products derived from
  18 *    this software without specific prior written permission.
  19 *
  20 * Alternatively, this software may be distributed under the terms of the
  21 * GNU General Public License ("GPL") version 2 as published by the Free
  22 * Software Foundation.
  23 *
  24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34 * POSSIBILITY OF SUCH DAMAGE.
  35 */
  36
  37#include "core.h"
  38#include "socket.h"
  39#include "name_table.h"
  40#include "bearer.h"
  41#include "link.h"
  42#include "node.h"
  43#include "net.h"
  44#include "udp_media.h"
  45#include <net/genetlink.h>
  46
  47static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {
  48        [TIPC_NLA_UNSPEC]       = { .type = NLA_UNSPEC, },
  49        [TIPC_NLA_BEARER]       = { .type = NLA_NESTED, },
  50        [TIPC_NLA_SOCK]         = { .type = NLA_NESTED, },
  51        [TIPC_NLA_PUBL]         = { .type = NLA_NESTED, },
  52        [TIPC_NLA_LINK]         = { .type = NLA_NESTED, },
  53        [TIPC_NLA_MEDIA]        = { .type = NLA_NESTED, },
  54        [TIPC_NLA_NODE]         = { .type = NLA_NESTED, },
  55        [TIPC_NLA_NET]          = { .type = NLA_NESTED, },
  56        [TIPC_NLA_NAME_TABLE]   = { .type = NLA_NESTED, },
  57        [TIPC_NLA_MON]          = { .type = NLA_NESTED, },
  58};
  59
  60const struct nla_policy
  61tipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = {
  62        [TIPC_NLA_NAME_TABLE_UNSPEC]    = { .type = NLA_UNSPEC },
  63        [TIPC_NLA_NAME_TABLE_PUBL]      = { .type = NLA_NESTED }
  64};
  65
  66const struct nla_policy tipc_nl_monitor_policy[TIPC_NLA_MON_MAX + 1] = {
  67        [TIPC_NLA_MON_UNSPEC]                   = { .type = NLA_UNSPEC },
  68        [TIPC_NLA_MON_REF]                      = { .type = NLA_U32 },
  69        [TIPC_NLA_MON_ACTIVATION_THRESHOLD]     = { .type = NLA_U32 },
  70};
  71
  72const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = {
  73        [TIPC_NLA_SOCK_UNSPEC]          = { .type = NLA_UNSPEC },
  74        [TIPC_NLA_SOCK_ADDR]            = { .type = NLA_U32 },
  75        [TIPC_NLA_SOCK_REF]             = { .type = NLA_U32 },
  76        [TIPC_NLA_SOCK_CON]             = { .type = NLA_NESTED },
  77        [TIPC_NLA_SOCK_HAS_PUBL]        = { .type = NLA_FLAG }
  78};
  79
  80const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = {
  81        [TIPC_NLA_NET_UNSPEC]           = { .type = NLA_UNSPEC },
  82        [TIPC_NLA_NET_ID]               = { .type = NLA_U32 },
  83        [TIPC_NLA_NET_ADDR]             = { .type = NLA_U32 },
  84        [TIPC_NLA_NET_NODEID]           = { .type = NLA_U64 },
  85        [TIPC_NLA_NET_NODEID_W1]        = { .type = NLA_U64 },
  86};
  87
  88const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = {
  89        [TIPC_NLA_LINK_UNSPEC]          = { .type = NLA_UNSPEC },
  90        [TIPC_NLA_LINK_NAME]            = { .type = NLA_STRING,
  91                                            .len = TIPC_MAX_LINK_NAME },
  92        [TIPC_NLA_LINK_MTU]             = { .type = NLA_U32 },
  93        [TIPC_NLA_LINK_BROADCAST]       = { .type = NLA_FLAG },
  94        [TIPC_NLA_LINK_UP]              = { .type = NLA_FLAG },
  95        [TIPC_NLA_LINK_ACTIVE]          = { .type = NLA_FLAG },
  96        [TIPC_NLA_LINK_PROP]            = { .type = NLA_NESTED },
  97        [TIPC_NLA_LINK_STATS]           = { .type = NLA_NESTED },
  98        [TIPC_NLA_LINK_RX]              = { .type = NLA_U32 },
  99        [TIPC_NLA_LINK_TX]              = { .type = NLA_U32 }
 100};
 101
 102const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = {
 103        [TIPC_NLA_NODE_UNSPEC]          = { .type = NLA_UNSPEC },
 104        [TIPC_NLA_NODE_ADDR]            = { .type = NLA_U32 },
 105        [TIPC_NLA_NODE_UP]              = { .type = NLA_FLAG }
 106};
 107
 108/* Properties valid for media, bearer and link */
 109const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = {
 110        [TIPC_NLA_PROP_UNSPEC]          = { .type = NLA_UNSPEC },
 111        [TIPC_NLA_PROP_PRIO]            = { .type = NLA_U32 },
 112        [TIPC_NLA_PROP_TOL]             = { .type = NLA_U32 },
 113        [TIPC_NLA_PROP_WIN]             = { .type = NLA_U32 },
 114        [TIPC_NLA_PROP_BROADCAST]       = { .type = NLA_U32 },
 115        [TIPC_NLA_PROP_BROADCAST_RATIO] = { .type = NLA_U32 }
 116};
 117
 118const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1]  = {
 119        [TIPC_NLA_BEARER_UNSPEC]        = { .type = NLA_UNSPEC },
 120        [TIPC_NLA_BEARER_NAME]          = { .type = NLA_STRING,
 121                                            .len = TIPC_MAX_BEARER_NAME },
 122        [TIPC_NLA_BEARER_PROP]          = { .type = NLA_NESTED },
 123        [TIPC_NLA_BEARER_DOMAIN]        = { .type = NLA_U32 }
 124};
 125
 126const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
 127        [TIPC_NLA_MEDIA_UNSPEC]         = { .type = NLA_UNSPEC },
 128        [TIPC_NLA_MEDIA_NAME]           = { .type = NLA_STRING },
 129        [TIPC_NLA_MEDIA_PROP]           = { .type = NLA_NESTED }
 130};
 131
 132const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = {
 133        [TIPC_NLA_UDP_UNSPEC]   = {.type = NLA_UNSPEC},
 134        [TIPC_NLA_UDP_LOCAL]    = {.type = NLA_BINARY,
 135                                   .len = sizeof(struct sockaddr_storage)},
 136        [TIPC_NLA_UDP_REMOTE]   = {.type = NLA_BINARY,
 137                                   .len = sizeof(struct sockaddr_storage)},
 138};
 139
 140/* Users of the legacy API (tipc-config) can't handle that we add operations,
 141 * so we have a separate genl handling for the new API.
 142 */
 143static const struct genl_ops tipc_genl_v2_ops[] = {
 144        {
 145                .cmd    = TIPC_NL_BEARER_DISABLE,
 146                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 147                .doit   = tipc_nl_bearer_disable,
 148        },
 149        {
 150                .cmd    = TIPC_NL_BEARER_ENABLE,
 151                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 152                .doit   = tipc_nl_bearer_enable,
 153        },
 154        {
 155                .cmd    = TIPC_NL_BEARER_GET,
 156                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 157                .doit   = tipc_nl_bearer_get,
 158                .dumpit = tipc_nl_bearer_dump,
 159        },
 160        {
 161                .cmd    = TIPC_NL_BEARER_ADD,
 162                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 163                .doit   = tipc_nl_bearer_add,
 164        },
 165        {
 166                .cmd    = TIPC_NL_BEARER_SET,
 167                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 168                .doit   = tipc_nl_bearer_set,
 169        },
 170        {
 171                .cmd    = TIPC_NL_SOCK_GET,
 172                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 173                .start = tipc_dump_start,
 174                .dumpit = tipc_nl_sk_dump,
 175                .done   = tipc_dump_done,
 176        },
 177        {
 178                .cmd    = TIPC_NL_PUBL_GET,
 179                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 180                .dumpit = tipc_nl_publ_dump,
 181        },
 182        {
 183                .cmd    = TIPC_NL_LINK_GET,
 184                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 185                .doit   = tipc_nl_node_get_link,
 186                .dumpit = tipc_nl_node_dump_link,
 187        },
 188        {
 189                .cmd    = TIPC_NL_LINK_SET,
 190                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 191                .doit   = tipc_nl_node_set_link,
 192        },
 193        {
 194                .cmd    = TIPC_NL_LINK_RESET_STATS,
 195                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 196                .doit   = tipc_nl_node_reset_link_stats,
 197        },
 198        {
 199                .cmd    = TIPC_NL_MEDIA_GET,
 200                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 201                .doit   = tipc_nl_media_get,
 202                .dumpit = tipc_nl_media_dump,
 203        },
 204        {
 205                .cmd    = TIPC_NL_MEDIA_SET,
 206                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 207                .doit   = tipc_nl_media_set,
 208        },
 209        {
 210                .cmd    = TIPC_NL_NODE_GET,
 211                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 212                .dumpit = tipc_nl_node_dump,
 213        },
 214        {
 215                .cmd    = TIPC_NL_NET_GET,
 216                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 217                .dumpit = tipc_nl_net_dump,
 218        },
 219        {
 220                .cmd    = TIPC_NL_NET_SET,
 221                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 222                .doit   = tipc_nl_net_set,
 223        },
 224        {
 225                .cmd    = TIPC_NL_NAME_TABLE_GET,
 226                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 227                .dumpit = tipc_nl_name_table_dump,
 228        },
 229        {
 230                .cmd    = TIPC_NL_MON_SET,
 231                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 232                .doit   = tipc_nl_node_set_monitor,
 233        },
 234        {
 235                .cmd    = TIPC_NL_MON_GET,
 236                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 237                .doit   = tipc_nl_node_get_monitor,
 238                .dumpit = tipc_nl_node_dump_monitor,
 239        },
 240        {
 241                .cmd    = TIPC_NL_MON_PEER_GET,
 242                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 243                .dumpit = tipc_nl_node_dump_monitor_peer,
 244        },
 245        {
 246                .cmd    = TIPC_NL_PEER_REMOVE,
 247                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 248                .doit   = tipc_nl_peer_rm,
 249        },
 250#ifdef CONFIG_TIPC_MEDIA_UDP
 251        {
 252                .cmd    = TIPC_NL_UDP_GET_REMOTEIP,
 253                .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 254                .dumpit = tipc_udp_nl_dump_remoteip,
 255        },
 256#endif
 257};
 258
 259struct genl_family tipc_genl_family __ro_after_init = {
 260        .name           = TIPC_GENL_V2_NAME,
 261        .version        = TIPC_GENL_V2_VERSION,
 262        .hdrsize        = 0,
 263        .maxattr        = TIPC_NLA_MAX,
 264        .policy         = tipc_nl_policy,
 265        .netnsok        = true,
 266        .module         = THIS_MODULE,
 267        .ops            = tipc_genl_v2_ops,
 268        .n_ops          = ARRAY_SIZE(tipc_genl_v2_ops),
 269};
 270
 271int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr)
 272{
 273        u32 maxattr = tipc_genl_family.maxattr;
 274
 275        *attr = genl_family_attrbuf(&tipc_genl_family);
 276        if (!*attr)
 277                return -EOPNOTSUPP;
 278
 279        return nlmsg_parse_deprecated(nlh, GENL_HDRLEN, *attr, maxattr,
 280                                      tipc_nl_policy, NULL);
 281}
 282
 283int __init tipc_netlink_start(void)
 284{
 285        int res;
 286
 287        res = genl_register_family(&tipc_genl_family);
 288        if (res) {
 289                pr_err("Failed to register netlink interface\n");
 290                return res;
 291        }
 292        return 0;
 293}
 294
 295void tipc_netlink_stop(void)
 296{
 297        genl_unregister_family(&tipc_genl_family);
 298}
 299
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.