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