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 <net/genetlink.h> 45 46 static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = { 47 [TIPC_NLA_UNSPEC] = { .type = NLA_UNSPEC, }, 48 [TIPC_NLA_BEARER] = { .type = NLA_NESTED, }, 49 [TIPC_NLA_SOCK] = { .type = NLA_NESTED, }, 50 [TIPC_NLA_PUBL] = { .type = NLA_NESTED, }, 51 [TIPC_NLA_LINK] = { .type = NLA_NESTED, }, 52 [TIPC_NLA_MEDIA] = { .type = NLA_NESTED, }, 53 [TIPC_NLA_NODE] = { .type = NLA_NESTED, }, 54 [TIPC_NLA_NET] = { .type = NLA_NESTED, }, 55 [TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, } 56 }; 57 58 /* Users of the legacy API (tipc-config) can't handle that we add operations, 59 * so we have a separate genl handling for the new API. 60 */ 61 struct genl_family tipc_genl_family = { 62 .id = GENL_ID_GENERATE, 63 .name = TIPC_GENL_V2_NAME, 64 .version = TIPC_GENL_V2_VERSION, 65 .hdrsize = 0, 66 .maxattr = TIPC_NLA_MAX, 67 .netnsok = true, 68 }; 69 70 static const struct genl_ops tipc_genl_v2_ops[] = { 71 { 72 .cmd = TIPC_NL_BEARER_DISABLE, 73 .doit = tipc_nl_bearer_disable, 74 .policy = tipc_nl_policy, 75 }, 76 { 77 .cmd = TIPC_NL_BEARER_ENABLE, 78 .doit = tipc_nl_bearer_enable, 79 .policy = tipc_nl_policy, 80 }, 81 { 82 .cmd = TIPC_NL_BEARER_GET, 83 .doit = tipc_nl_bearer_get, 84 .dumpit = tipc_nl_bearer_dump, 85 .policy = tipc_nl_policy, 86 }, 87 { 88 .cmd = TIPC_NL_BEARER_SET, 89 .doit = tipc_nl_bearer_set, 90 .policy = tipc_nl_policy, 91 }, 92 { 93 .cmd = TIPC_NL_SOCK_GET, 94 .dumpit = tipc_nl_sk_dump, 95 .policy = tipc_nl_policy, 96 }, 97 { 98 .cmd = TIPC_NL_PUBL_GET, 99 .dumpit = tipc_nl_publ_dump, 100 .policy = tipc_nl_policy, 101 }, 102 { 103 .cmd = TIPC_NL_LINK_GET, 104 .doit = tipc_nl_link_get, 105 .dumpit = tipc_nl_link_dump, 106 .policy = tipc_nl_policy, 107 }, 108 { 109 .cmd = TIPC_NL_LINK_SET, 110 .doit = tipc_nl_link_set, 111 .policy = tipc_nl_policy, 112 }, 113 { 114 .cmd = TIPC_NL_LINK_RESET_STATS, 115 .doit = tipc_nl_link_reset_stats, 116 .policy = tipc_nl_policy, 117 }, 118 { 119 .cmd = TIPC_NL_MEDIA_GET, 120 .doit = tipc_nl_media_get, 121 .dumpit = tipc_nl_media_dump, 122 .policy = tipc_nl_policy, 123 }, 124 { 125 .cmd = TIPC_NL_MEDIA_SET, 126 .doit = tipc_nl_media_set, 127 .policy = tipc_nl_policy, 128 }, 129 { 130 .cmd = TIPC_NL_NODE_GET, 131 .dumpit = tipc_nl_node_dump, 132 .policy = tipc_nl_policy, 133 }, 134 { 135 .cmd = TIPC_NL_NET_GET, 136 .dumpit = tipc_nl_net_dump, 137 .policy = tipc_nl_policy, 138 }, 139 { 140 .cmd = TIPC_NL_NET_SET, 141 .doit = tipc_nl_net_set, 142 .policy = tipc_nl_policy, 143 }, 144 { 145 .cmd = TIPC_NL_NAME_TABLE_GET, 146 .dumpit = tipc_nl_name_table_dump, 147 .policy = tipc_nl_policy, 148 } 149 }; 150 151 int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr) 152 { 153 u32 maxattr = tipc_genl_family.maxattr; 154 155 *attr = tipc_genl_family.attrbuf; 156 if (!*attr) 157 return -EOPNOTSUPP; 158 159 return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy); 160 } 161 162 int tipc_netlink_start(void) 163 { 164 int res; 165 166 res = genl_register_family_with_ops(&tipc_genl_family, 167 tipc_genl_v2_ops); 168 if (res) { 169 pr_err("Failed to register netlink interface\n"); 170 return res; 171 } 172 return 0; 173 } 174 175 void tipc_netlink_stop(void) 176 { 177 genl_unregister_family(&tipc_genl_family); 178 } 179