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