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 }; 84 85 const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = { 86 [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC }, 87 [TIPC_NLA_LINK_NAME] = { .type = NLA_STRING, 88 .len = TIPC_MAX_LINK_NAME }, 89 [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 }, 90 [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG }, 91 [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG }, 92 [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG }, 93 [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED }, 94 [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED }, 95 [TIPC_NLA_LINK_RX] = { .type = NLA_U32 }, 96 [TIPC_NLA_LINK_TX] = { .type = NLA_U32 } 97 }; 98 99 const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = { 100 [TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC }, 101 [TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 }, 102 [TIPC_NLA_NODE_UP] = { .type = NLA_FLAG } 103 }; 104 105 /* Properties valid for media, bearer and link */ 106 const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = { 107 [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC }, 108 [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 }, 109 [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 }, 110 [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 } 111 }; 112 113 const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = { 114 [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC }, 115 [TIPC_NLA_BEARER_NAME] = { .type = NLA_STRING, 116 .len = TIPC_MAX_BEARER_NAME }, 117 [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED }, 118 [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 } 119 }; 120 121 const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = { 122 [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC }, 123 [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING }, 124 [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED } 125 }; 126 127 const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = { 128 [TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC}, 129 [TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY, 130 .len = sizeof(struct sockaddr_storage)}, 131 [TIPC_NLA_UDP_REMOTE] = {.type = NLA_BINARY, 132 .len = sizeof(struct sockaddr_storage)}, 133 }; 134 135 /* Users of the legacy API (tipc-config) can't handle that we add operations, 136 * so we have a separate genl handling for the new API. 137 */ 138 static const struct genl_ops tipc_genl_v2_ops[] = { 139 { 140 .cmd = TIPC_NL_BEARER_DISABLE, 141 .doit = tipc_nl_bearer_disable, 142 .policy = tipc_nl_policy, 143 }, 144 { 145 .cmd = TIPC_NL_BEARER_ENABLE, 146 .doit = tipc_nl_bearer_enable, 147 .policy = tipc_nl_policy, 148 }, 149 { 150 .cmd = TIPC_NL_BEARER_GET, 151 .doit = tipc_nl_bearer_get, 152 .dumpit = tipc_nl_bearer_dump, 153 .policy = tipc_nl_policy, 154 }, 155 { 156 .cmd = TIPC_NL_BEARER_ADD, 157 .doit = tipc_nl_bearer_add, 158 .policy = tipc_nl_policy, 159 }, 160 { 161 .cmd = TIPC_NL_BEARER_SET, 162 .doit = tipc_nl_bearer_set, 163 .policy = tipc_nl_policy, 164 }, 165 { 166 .cmd = TIPC_NL_SOCK_GET, 167 .dumpit = tipc_nl_sk_dump, 168 .policy = tipc_nl_policy, 169 }, 170 { 171 .cmd = TIPC_NL_PUBL_GET, 172 .dumpit = tipc_nl_publ_dump, 173 .policy = tipc_nl_policy, 174 }, 175 { 176 .cmd = TIPC_NL_LINK_GET, 177 .doit = tipc_nl_node_get_link, 178 .dumpit = tipc_nl_node_dump_link, 179 .policy = tipc_nl_policy, 180 }, 181 { 182 .cmd = TIPC_NL_LINK_SET, 183 .doit = tipc_nl_node_set_link, 184 .policy = tipc_nl_policy, 185 }, 186 { 187 .cmd = TIPC_NL_LINK_RESET_STATS, 188 .doit = tipc_nl_node_reset_link_stats, 189 .policy = tipc_nl_policy, 190 }, 191 { 192 .cmd = TIPC_NL_MEDIA_GET, 193 .doit = tipc_nl_media_get, 194 .dumpit = tipc_nl_media_dump, 195 .policy = tipc_nl_policy, 196 }, 197 { 198 .cmd = TIPC_NL_MEDIA_SET, 199 .doit = tipc_nl_media_set, 200 .policy = tipc_nl_policy, 201 }, 202 { 203 .cmd = TIPC_NL_NODE_GET, 204 .dumpit = tipc_nl_node_dump, 205 .policy = tipc_nl_policy, 206 }, 207 { 208 .cmd = TIPC_NL_NET_GET, 209 .dumpit = tipc_nl_net_dump, 210 .policy = tipc_nl_policy, 211 }, 212 { 213 .cmd = TIPC_NL_NET_SET, 214 .doit = tipc_nl_net_set, 215 .policy = tipc_nl_policy, 216 }, 217 { 218 .cmd = TIPC_NL_NAME_TABLE_GET, 219 .dumpit = tipc_nl_name_table_dump, 220 .policy = tipc_nl_policy, 221 }, 222 { 223 .cmd = TIPC_NL_MON_SET, 224 .doit = tipc_nl_node_set_monitor, 225 .policy = tipc_nl_policy, 226 }, 227 { 228 .cmd = TIPC_NL_MON_GET, 229 .doit = tipc_nl_node_get_monitor, 230 .dumpit = tipc_nl_node_dump_monitor, 231 .policy = tipc_nl_policy, 232 }, 233 { 234 .cmd = TIPC_NL_MON_PEER_GET, 235 .dumpit = tipc_nl_node_dump_monitor_peer, 236 .policy = tipc_nl_policy, 237 }, 238 { 239 .cmd = TIPC_NL_PEER_REMOVE, 240 .doit = tipc_nl_peer_rm, 241 .policy = tipc_nl_policy, 242 }, 243 #ifdef CONFIG_TIPC_MEDIA_UDP 244 { 245 .cmd = TIPC_NL_UDP_GET_REMOTEIP, 246 .dumpit = tipc_udp_nl_dump_remoteip, 247 .policy = tipc_nl_policy, 248 }, 249 #endif 250 }; 251 252 struct genl_family tipc_genl_family __ro_after_init = { 253 .name = TIPC_GENL_V2_NAME, 254 .version = TIPC_GENL_V2_VERSION, 255 .hdrsize = 0, 256 .maxattr = TIPC_NLA_MAX, 257 .netnsok = true, 258 .module = THIS_MODULE, 259 .ops = tipc_genl_v2_ops, 260 .n_ops = ARRAY_SIZE(tipc_genl_v2_ops), 261 }; 262 263 int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr) 264 { 265 u32 maxattr = tipc_genl_family.maxattr; 266 267 *attr = genl_family_attrbuf(&tipc_genl_family); 268 if (!*attr) 269 return -EOPNOTSUPP; 270 271 return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy, 272 NULL); 273 } 274 275 int __init tipc_netlink_start(void) 276 { 277 int res; 278 279 res = genl_register_family(&tipc_genl_family); 280 if (res) { 281 pr_err("Failed to register netlink interface\n"); 282 return res; 283 } 284 return 0; 285 } 286 287 void tipc_netlink_stop(void) 288 { 289 genl_unregister_family(&tipc_genl_family); 290 } 291