1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 Tom Gundersen <teg@jklm.no>
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 #include <sys/socket.h>
25 #include <linux/netlink.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/in6.h>
28 #include <linux/veth.h>
29 #include <linux/if_bridge.h>
30 #include <linux/if_addr.h>
34 #include <linux/if_tunnel.h>
39 #include "rtnl-types.h"
42 static const NLTypeSystem rtnl_link_type_system;
44 static const NLType rtnl_link_info_data_veth_types[VETH_INFO_MAX + 1] = {
45 [VETH_INFO_PEER] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
49 static const NLType rtnl_link_info_data_macvlan_types[IFLA_MACVLAN_MAX + 1] = {
50 [IFLA_MACVLAN_MODE] = { .type = NLA_U32 },
51 [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 },
54 static const NLType rtnl_link_info_data_bridge_types[IFLA_BRIDGE_MAX + 1] = {
55 [IFLA_BRIDGE_FLAGS] = { .type = NLA_U16 },
56 [IFLA_BRIDGE_MODE] = { .type = NLA_U16 },
58 [IFLA_BRIDGE_VLAN_INFO] = { .type = NLA_BINARY,
59 .len = sizeof(struct bridge_vlan_info), },
63 static const NLType rtnl_link_info_data_vlan_types[IFLA_VLAN_MAX + 1] = {
64 [IFLA_VLAN_ID] = { .type = NLA_U16 },
66 [IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) },
67 [IFLA_VLAN_EGRESS_QOS] = { .type = NLA_NESTED },
68 [IFLA_VLAN_INGRESS_QOS] = { .type = NLA_NESTED },
70 [IFLA_VLAN_PROTOCOL] = { .type = NLA_U16 },
73 static const NLType rtnl_link_info_data_bond_types[IFLA_BOND_MAX + 1] = {
74 [IFLA_BOND_MODE] = { .type = NLA_U8 },
75 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
76 #ifdef IFLA_BOND_MIIMON
77 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },
78 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
79 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
80 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
81 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
83 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
85 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
86 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
87 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
88 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
89 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
90 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
91 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
92 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
93 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
94 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
95 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
96 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
97 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
98 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
100 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
105 static const NLType rtnl_link_info_data_iptun_types[IFLA_IPTUN_MAX + 1] = {
106 [IFLA_IPTUN_LINK] = { .type = NLA_U32 },
107 [IFLA_IPTUN_LOCAL] = { .type = NLA_U32 },
108 [IFLA_IPTUN_REMOTE] = { .type = NLA_U32 },
109 [IFLA_IPTUN_TTL] = { .type = NLA_U8 },
110 [IFLA_IPTUN_TOS] = { .type = NLA_U8 },
111 [IFLA_IPTUN_PMTUDISC] = { .type = NLA_U8 },
112 [IFLA_IPTUN_FLAGS] = { .type = NLA_U16 },
113 [IFLA_IPTUN_PROTO] = { .type = NLA_U8 },
114 [IFLA_IPTUN_6RD_PREFIX] = { .type = NLA_IN_ADDR },
115 [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NLA_U32 },
116 [IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NLA_U16 },
117 [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NLA_U16 },
120 typedef enum NLUnionLinkInfoData {
121 NL_UNION_LINK_INFO_DATA_BOND,
122 NL_UNION_LINK_INFO_DATA_BRIDGE,
123 NL_UNION_LINK_INFO_DATA_VLAN,
124 NL_UNION_LINK_INFO_DATA_VETH,
125 NL_UNION_LINK_INFO_DATA_MACVLAN,
126 NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL,
127 NL_UNION_LINK_INFO_DATA_SIT_TUNNEL,
128 _NL_UNION_LINK_INFO_DATA_MAX,
129 _NL_UNION_LINK_INFO_DATA_INVALID = -1
130 } NLUnionLinkInfoData;
132 const char *nl_union_link_info_data_to_string(NLUnionLinkInfoData p) _const_;
133 NLUnionLinkInfoData nl_union_link_info_data_from_string(const char *p) _pure_;
135 /* these strings must match the .kind entries in the kernel */
136 static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = {
137 [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
138 [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
139 [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
140 [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
141 [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
142 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
143 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
146 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
148 static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = {
149 [NL_UNION_LINK_INFO_DATA_BOND] = { .max = ELEMENTSOF(rtnl_link_info_data_bond_types) - 1,
150 .types = rtnl_link_info_data_bond_types },
151 [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .max = ELEMENTSOF(rtnl_link_info_data_bridge_types) - 1,
152 .types = rtnl_link_info_data_bridge_types },
153 [NL_UNION_LINK_INFO_DATA_VLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vlan_types) - 1,
154 .types = rtnl_link_info_data_vlan_types },
155 [NL_UNION_LINK_INFO_DATA_VETH] = { .max = ELEMENTSOF(rtnl_link_info_data_veth_types) - 1,
156 .types = rtnl_link_info_data_veth_types },
157 [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_macvlan_types) - 1,
158 .types = rtnl_link_info_data_macvlan_types },
159 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
160 .types = rtnl_link_info_data_iptun_types },
161 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
162 .types = rtnl_link_info_data_iptun_types },
165 static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
166 .num = _NL_UNION_LINK_INFO_DATA_MAX,
167 .lookup = nl_union_link_info_data_from_string,
168 .type_systems = rtnl_link_info_data_type_systems,
169 .match = IFLA_INFO_KIND,
172 static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = {
173 [IFLA_INFO_KIND] = { .type = NLA_STRING },
174 [IFLA_INFO_DATA] = { .type = NLA_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
177 [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING },
178 [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED },
182 static const NLTypeSystem rtnl_link_info_type_system = {
183 .max = ELEMENTSOF(rtnl_link_info_types) - 1,
184 .types = rtnl_link_info_types,
187 static const NLType rtnl_link_types[IFLA_MAX + 1] = {
188 [IFLA_ADDRESS] = { .type = NLA_ETHER_ADDR, },
189 [IFLA_BROADCAST] = { .type = NLA_ETHER_ADDR, },
190 [IFLA_IFNAME] = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
191 [IFLA_MTU] = { .type = NLA_U32 },
192 [IFLA_LINK] = { .type = NLA_U32 },
199 [IFLA_MASTER] = { .type = NLA_U32 },
204 [IFLA_TXQLEN] = { .type = NLA_U32 },
206 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
208 [IFLA_WEIGHT] = { .type = NLA_U32 },
209 [IFLA_OPERSTATE] = { .type = NLA_U8 },
210 [IFLA_LINKMODE] = { .type = NLA_U8 },
211 [IFLA_LINKINFO] = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
212 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
213 [IFLA_IFALIAS] = { .type = NLA_STRING, .size = IFALIASZ - 1 },
216 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED, },
218 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
219 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
220 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
225 [IFLA_GROUP] = { .type = NLA_U32 },
226 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
227 [IFLA_EXT_MASK] = { .type = NLA_U32 },
228 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
229 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
230 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
231 [IFLA_CARRIER] = { .type = NLA_U8 },
233 [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
237 static const NLTypeSystem rtnl_link_type_system = {
238 .max = ELEMENTSOF(rtnl_link_types) - 1,
239 .types = rtnl_link_types,
242 static const NLType rtnl_address_types[IFA_MAX + 1] = {
243 [IFA_ADDRESS] = { .type = NLA_IN_ADDR },
244 [IFA_LOCAL] = { .type = NLA_IN_ADDR },
245 [IFA_LABEL] = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
246 [IFA_BROADCAST] = { .type = NLA_IN_ADDR }, /* 6? */
247 [IFA_CACHEINFO] = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
253 [IFA_FLAGS] = { .type = NLA_U32 },
257 static const NLTypeSystem rtnl_address_type_system = {
258 .max = ELEMENTSOF(rtnl_address_types) - 1,
259 .types = rtnl_address_types,
262 static const NLType rtnl_route_types[RTA_MAX + 1] = {
263 [RTA_DST] = { .type = NLA_IN_ADDR }, /* 6? */
264 [RTA_SRC] = { .type = NLA_IN_ADDR }, /* 6? */
265 [RTA_IIF] = { .type = NLA_U32 },
266 [RTA_OIF] = { .type = NLA_U32 },
267 [RTA_GATEWAY] = { .type = NLA_IN_ADDR },
268 [RTA_PRIORITY] = { .type = NLA_U32 },
269 [RTA_PREFSRC] = { .type = NLA_IN_ADDR }, /* 6? */
271 [RTA_METRICS] = { .type = NLA_NESTED },
272 [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
274 [RTA_FLOW] = { .type = NLA_U32 }, /* 6? */
283 static const NLTypeSystem rtnl_route_type_system = {
284 .max = ELEMENTSOF(rtnl_route_types) - 1,
285 .types = rtnl_route_types,
288 static const NLType rtnl_types[RTM_MAX + 1] = {
289 [NLMSG_ERROR] = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
290 [RTM_NEWLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
291 [RTM_DELLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
292 [RTM_GETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
293 [RTM_SETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
294 [RTM_NEWADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
295 [RTM_DELADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
296 [RTM_GETADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
297 [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
298 [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
299 [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
302 const NLTypeSystem rtnl_type_system = {
303 .max = ELEMENTSOF(rtnl_types) - 1,
307 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
308 const NLType *nl_type;
313 type_system = &rtnl_type_system;
315 assert(type_system->types);
317 if (type > type_system->max)
320 nl_type = &type_system->types[type];
322 if (nl_type->type == NLA_UNSPEC)
330 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
331 const NLType *nl_type;
336 r = type_system_get_type(type_system, &nl_type, type);
340 assert_return(nl_type->type == NLA_NESTED, -EINVAL);
342 assert(nl_type->type_system);
344 *ret = nl_type->type_system;
349 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
350 const NLType *nl_type;
355 r = type_system_get_type(type_system, &nl_type, type);
359 assert_return(nl_type->type == NLA_UNION, -EINVAL);
361 assert(nl_type->type_system_union);
363 *ret = nl_type->type_system_union;
368 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
371 assert(type_system_union);
372 assert(type_system_union->lookup);
373 assert(type_system_union->type_systems);
377 type = type_system_union->lookup(key);
381 assert(type < type_system_union->num);
383 *ret = &type_system_union->type_systems[type];