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 47 static 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 60 const struct nla_policy 61 tipc_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 66 const 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 72 const 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 80 const 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 [TIPC_NLA_NET_ADDR_LEGACY] = { .type = NLA_FLAG } 87 }; 88 89 const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = { 90 [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC }, 91 [TIPC_NLA_LINK_NAME] = { .type = NLA_NUL_STRING, 92 .len = TIPC_MAX_LINK_NAME }, 93 [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 }, 94 [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG }, 95 [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG }, 96 [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG }, 97 [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED }, 98 [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED }, 99 [TIPC_NLA_LINK_RX] = { .type = NLA_U32 }, 100 [TIPC_NLA_LINK_TX] = { .type = NLA_U32 } 101 }; 102 103 const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = { 104 [TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC }, 105 [TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 }, 106 [TIPC_NLA_NODE_UP] = { .type = NLA_FLAG }, 107 [TIPC_NLA_NODE_ID] = { .type = NLA_BINARY, 108 .len = TIPC_NODEID_LEN}, 109 [TIPC_NLA_NODE_KEY] = { .type = NLA_BINARY, 110 .len = TIPC_AEAD_KEY_SIZE_MAX}, 111 [TIPC_NLA_NODE_KEY_MASTER] = { .type = NLA_FLAG }, 112 [TIPC_NLA_NODE_REKEYING] = { .type = NLA_U32 }, 113 }; 114 115 /* Properties valid for media, bearer and link */ 116 const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = { 117 [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC }, 118 [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 }, 119 [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 }, 120 [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 }, 121 [TIPC_NLA_PROP_MTU] = { .type = NLA_U32 }, 122 [TIPC_NLA_PROP_BROADCAST] = { .type = NLA_U32 }, 123 [TIPC_NLA_PROP_BROADCAST_RATIO] = { .type = NLA_U32 } 124 }; 125 126 const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = { 127 [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC }, 128 [TIPC_NLA_BEARER_NAME] = { .type = NLA_NUL_STRING, 129 .len = TIPC_MAX_BEARER_NAME }, 130 [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED }, 131 [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 } 132 }; 133 134 const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = { 135 [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC }, 136 [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING }, 137 [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED } 138 }; 139 140 const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = { 141 [TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC}, 142 [TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY, 143 .len = sizeof(struct sockaddr_storage)}, 144 [TIPC_NLA_UDP_REMOTE] = {.type = NLA_BINARY, 145 .len = sizeof(struct sockaddr_storage)}, 146 }; 147 148 /* Users of the legacy API (tipc-config) can't handle that we add operations, 149 * so we have a separate genl handling for the new API. 150 */ 151 static const struct genl_ops tipc_genl_v2_ops[] = { 152 { 153 .cmd = TIPC_NL_BEARER_DISABLE, 154 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 155 .doit = tipc_nl_bearer_disable, 156 }, 157 { 158 .cmd = TIPC_NL_BEARER_ENABLE, 159 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 160 .doit = tipc_nl_bearer_enable, 161 }, 162 { 163 .cmd = TIPC_NL_BEARER_GET, 164 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 165 .doit = tipc_nl_bearer_get, 166 .dumpit = tipc_nl_bearer_dump, 167 }, 168 { 169 .cmd = TIPC_NL_BEARER_ADD, 170 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 171 .doit = tipc_nl_bearer_add, 172 }, 173 { 174 .cmd = TIPC_NL_BEARER_SET, 175 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 176 .doit = tipc_nl_bearer_set, 177 }, 178 { 179 .cmd = TIPC_NL_SOCK_GET, 180 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 181 .start = tipc_dump_start, 182 .dumpit = tipc_nl_sk_dump, 183 .done = tipc_dump_done, 184 }, 185 { 186 .cmd = TIPC_NL_PUBL_GET, 187 .validate = GENL_DONT_VALIDATE_STRICT | 188 GENL_DONT_VALIDATE_DUMP_STRICT, 189 .dumpit = tipc_nl_publ_dump, 190 }, 191 { 192 .cmd = TIPC_NL_LINK_GET, 193 .validate = GENL_DONT_VALIDATE_STRICT, 194 .doit = tipc_nl_node_get_link, 195 .dumpit = tipc_nl_node_dump_link, 196 }, 197 { 198 .cmd = TIPC_NL_LINK_SET, 199 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 200 .doit = tipc_nl_node_set_link, 201 }, 202 { 203 .cmd = TIPC_NL_LINK_RESET_STATS, 204 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 205 .doit = tipc_nl_node_reset_link_stats, 206 }, 207 { 208 .cmd = TIPC_NL_MEDIA_GET, 209 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 210 .doit = tipc_nl_media_get, 211 .dumpit = tipc_nl_media_dump, 212 }, 213 { 214 .cmd = TIPC_NL_MEDIA_SET, 215 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 216 .doit = tipc_nl_media_set, 217 }, 218 { 219 .cmd = TIPC_NL_NODE_GET, 220 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 221 .dumpit = tipc_nl_node_dump, 222 }, 223 { 224 .cmd = TIPC_NL_NET_GET, 225 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 226 .dumpit = tipc_nl_net_dump, 227 }, 228 { 229 .cmd = TIPC_NL_NET_SET, 230 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 231 .doit = tipc_nl_net_set, 232 }, 233 { 234 .cmd = TIPC_NL_NAME_TABLE_GET, 235 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 236 .dumpit = tipc_nl_name_table_dump, 237 }, 238 { 239 .cmd = TIPC_NL_MON_SET, 240 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 241 .doit = tipc_nl_node_set_monitor, 242 }, 243 { 244 .cmd = TIPC_NL_MON_GET, 245 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 246 .doit = tipc_nl_node_get_monitor, 247 .dumpit = tipc_nl_node_dump_monitor, 248 }, 249 { 250 .cmd = TIPC_NL_MON_PEER_GET, 251 .validate = GENL_DONT_VALIDATE_STRICT | 252 GENL_DONT_VALIDATE_DUMP_STRICT, 253 .dumpit = tipc_nl_node_dump_monitor_peer, 254 }, 255 { 256 .cmd = TIPC_NL_PEER_REMOVE, 257 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 258 .doit = tipc_nl_peer_rm, 259 }, 260 #ifdef CONFIG_TIPC_MEDIA_UDP 261 { 262 .cmd = TIPC_NL_UDP_GET_REMOTEIP, 263 .validate = GENL_DONT_VALIDATE_STRICT | 264 GENL_DONT_VALIDATE_DUMP_STRICT, 265 .dumpit = tipc_udp_nl_dump_remoteip, 266 }, 267 #endif 268 #ifdef CONFIG_TIPC_CRYPTO 269 { 270 .cmd = TIPC_NL_KEY_SET, 271 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 272 .doit = tipc_nl_node_set_key, 273 }, 274 { 275 .cmd = TIPC_NL_KEY_FLUSH, 276 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 277 .doit = tipc_nl_node_flush_key, 278 }, 279 #endif 280 { 281 .cmd = TIPC_NL_ADDR_LEGACY_GET, 282 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 283 .doit = tipc_nl_net_addr_legacy_get, 284 }, 285 }; 286 287 struct genl_family tipc_genl_family __ro_after_init = { 288 .name = TIPC_GENL_V2_NAME, 289 .version = TIPC_GENL_V2_VERSION, 290 .hdrsize = 0, 291 .maxattr = TIPC_NLA_MAX, 292 .policy = tipc_nl_policy, 293 .netnsok = true, 294 .module = THIS_MODULE, 295 .ops = tipc_genl_v2_ops, 296 .n_ops = ARRAY_SIZE(tipc_genl_v2_ops), 297 .resv_start_op = TIPC_NL_ADDR_LEGACY_GET + 1, 298 }; 299 300 int __init tipc_netlink_start(void) 301 { 302 int res; 303 304 res = genl_register_family(&tipc_genl_family); 305 if (res) { 306 pr_err("Failed to register netlink interface\n"); 307 return res; 308 } 309 return 0; 310 } 311 312 void tipc_netlink_stop(void) 313 { 314 genl_unregister_family(&tipc_genl_family); 315 } 316