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_vxlan_types[IFLA_VXLAN_MAX+1] = {
74 [IFLA_VXLAN_ID] = { .type = NLA_U32 },
75 [IFLA_VXLAN_GROUP] = {.type = NLA_IN_ADDR },
76 [IFLA_VXLAN_LINK] = { .type = NLA_U32 },
77 [IFLA_VXLAN_LOCAL] = { .type = NLA_U32},
78 [IFLA_VXLAN_TTL] = { .type = NLA_U8 },
79 [IFLA_VXLAN_TOS] = { .type = NLA_U8 },
80 [IFLA_VXLAN_LEARNING] = { .type = NLA_U8 },
81 [IFLA_VXLAN_AGEING] = { .type = NLA_U32 },
82 [IFLA_VXLAN_LIMIT] = { .type = NLA_U32 },
83 [IFLA_VXLAN_PORT_RANGE] = { .type = NLA_U32},
84 [IFLA_VXLAN_PROXY] = { .type = NLA_U8 },
85 [IFLA_VXLAN_RSC] = { .type = NLA_U8 },
86 [IFLA_VXLAN_L2MISS] = { .type = NLA_U8 },
87 [IFLA_VXLAN_L3MISS] = { .type = NLA_U8 },
90 static const NLType rtnl_link_info_data_bond_types[IFLA_BOND_MAX + 1] = {
91 [IFLA_BOND_MODE] = { .type = NLA_U8 },
92 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
93 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },
94 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
95 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
96 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
97 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
98 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
99 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
100 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
101 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
102 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
103 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
104 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
105 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
106 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
107 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
108 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
109 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
110 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
111 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
112 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
113 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
116 static const NLType rtnl_link_info_data_iptun_types[IFLA_IPTUN_MAX + 1] = {
117 [IFLA_IPTUN_LINK] = { .type = NLA_U32 },
118 [IFLA_IPTUN_LOCAL] = { .type = NLA_IN_ADDR },
119 [IFLA_IPTUN_REMOTE] = { .type = NLA_IN_ADDR },
120 [IFLA_IPTUN_TTL] = { .type = NLA_U8 },
121 [IFLA_IPTUN_TOS] = { .type = NLA_U8 },
122 [IFLA_IPTUN_PMTUDISC] = { .type = NLA_U8 },
123 [IFLA_IPTUN_FLAGS] = { .type = NLA_U16 },
124 [IFLA_IPTUN_PROTO] = { .type = NLA_U8 },
125 [IFLA_IPTUN_6RD_PREFIX] = { .type = NLA_IN_ADDR },
126 [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NLA_U32 },
127 [IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NLA_U16 },
128 [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NLA_U16 },
131 static const NLType rtnl_link_info_data_ipgre_types[IFLA_GRE_MAX + 1] = {
132 [IFLA_GRE_LINK] = { .type = NLA_U32 },
133 [IFLA_GRE_IFLAGS] = { .type = NLA_U16 },
134 [IFLA_GRE_OFLAGS] = { .type = NLA_U16 },
135 [IFLA_GRE_IKEY] = { .type = NLA_U32 },
136 [IFLA_GRE_OKEY] = { .type = NLA_U32 },
137 [IFLA_GRE_LOCAL] = { .type = NLA_IN_ADDR },
138 [IFLA_GRE_REMOTE] = { .type = NLA_IN_ADDR },
139 [IFLA_GRE_TTL] = { .type = NLA_U8 },
140 [IFLA_GRE_TOS] = { .type = NLA_U8 },
141 [IFLA_GRE_PMTUDISC] = { .type = NLA_U8 },
144 static const NLType rtnl_link_info_data_ipvti_types[IFLA_VTI_MAX + 1] = {
145 [IFLA_VTI_LINK] = { .type = NLA_U32 },
146 [IFLA_VTI_IKEY] = { .type = NLA_U32 },
147 [IFLA_VTI_OKEY] = { .type = NLA_U32 },
148 [IFLA_VTI_LOCAL] = { .type = NLA_IN_ADDR },
149 [IFLA_VTI_REMOTE] = { .type = NLA_IN_ADDR },
152 /* these strings must match the .kind entries in the kernel */
153 static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = {
154 [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
155 [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
156 [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
157 [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
158 [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
159 [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
160 [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
161 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
162 [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
163 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
164 [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
167 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
169 static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = {
170 [NL_UNION_LINK_INFO_DATA_BOND] = { .max = ELEMENTSOF(rtnl_link_info_data_bond_types) - 1,
171 .types = rtnl_link_info_data_bond_types },
172 [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .max = ELEMENTSOF(rtnl_link_info_data_bridge_types) - 1,
173 .types = rtnl_link_info_data_bridge_types },
174 [NL_UNION_LINK_INFO_DATA_VLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vlan_types) - 1,
175 .types = rtnl_link_info_data_vlan_types },
176 [NL_UNION_LINK_INFO_DATA_VETH] = { .max = ELEMENTSOF(rtnl_link_info_data_veth_types) - 1,
177 .types = rtnl_link_info_data_veth_types },
178 [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_macvlan_types) - 1,
179 .types = rtnl_link_info_data_macvlan_types },
180 [NL_UNION_LINK_INFO_DATA_VXLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vxlan_types) - 1,
181 .types = rtnl_link_info_data_vxlan_types },
182 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
183 .types = rtnl_link_info_data_iptun_types },
184 [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
185 .types = rtnl_link_info_data_ipgre_types },
186 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
187 .types = rtnl_link_info_data_iptun_types },
188 [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_ipvti_types) - 1,
189 .types = rtnl_link_info_data_ipvti_types },
192 static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
193 .num = _NL_UNION_LINK_INFO_DATA_MAX,
194 .lookup = nl_union_link_info_data_from_string,
195 .type_systems = rtnl_link_info_data_type_systems,
196 .match = IFLA_INFO_KIND,
199 static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = {
200 [IFLA_INFO_KIND] = { .type = NLA_STRING },
201 [IFLA_INFO_DATA] = { .type = NLA_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
204 [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING },
205 [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED },
209 static const NLTypeSystem rtnl_link_info_type_system = {
210 .max = ELEMENTSOF(rtnl_link_info_types) - 1,
211 .types = rtnl_link_info_types,
214 static const struct NLType rtnl_bridge_port_types[IFLA_BRPORT_MAX + 1] = {
215 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
216 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
217 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
218 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
219 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
220 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
221 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
222 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
225 static const NLTypeSystem rtnl_bridge_port_type_system = {
226 .max = ELEMENTSOF(rtnl_bridge_port_types) - 1,
227 .types = rtnl_bridge_port_types,
230 static const NLType rtnl_link_types[IFLA_MAX + 1 ] = {
231 [IFLA_ADDRESS] = { .type = NLA_ETHER_ADDR, },
232 [IFLA_BROADCAST] = { .type = NLA_ETHER_ADDR, },
233 [IFLA_IFNAME] = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
234 [IFLA_MTU] = { .type = NLA_U32 },
235 [IFLA_LINK] = { .type = NLA_U32 },
242 [IFLA_MASTER] = { .type = NLA_U32 },
247 [IFLA_PROTINFO] = { .type = NLA_NESTED, .type_system = &rtnl_bridge_port_type_system },
248 [IFLA_TXQLEN] = { .type = NLA_U32 },
250 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
252 [IFLA_WEIGHT] = { .type = NLA_U32 },
253 [IFLA_OPERSTATE] = { .type = NLA_U8 },
254 [IFLA_LINKMODE] = { .type = NLA_U8 },
255 [IFLA_LINKINFO] = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
256 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
257 [IFLA_IFALIAS] = { .type = NLA_STRING, .size = IFALIASZ - 1 },
260 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED, },
262 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
263 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
264 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
269 [IFLA_GROUP] = { .type = NLA_U32 },
270 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
271 [IFLA_EXT_MASK] = { .type = NLA_U32 },
272 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
273 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
274 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
275 [IFLA_CARRIER] = { .type = NLA_U8 },
277 [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
281 static const NLTypeSystem rtnl_link_type_system = {
282 .max = ELEMENTSOF(rtnl_link_types) - 1,
283 .types = rtnl_link_types,
286 static const NLType rtnl_address_types[IFA_MAX + 1] = {
287 [IFA_ADDRESS] = { .type = NLA_IN_ADDR },
288 [IFA_LOCAL] = { .type = NLA_IN_ADDR },
289 [IFA_LABEL] = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
290 [IFA_BROADCAST] = { .type = NLA_IN_ADDR }, /* 6? */
291 [IFA_CACHEINFO] = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
297 [IFA_FLAGS] = { .type = NLA_U32 },
301 static const NLTypeSystem rtnl_address_type_system = {
302 .max = ELEMENTSOF(rtnl_address_types) - 1,
303 .types = rtnl_address_types,
306 static const NLType rtnl_route_types[RTA_MAX + 1] = {
307 [RTA_DST] = { .type = NLA_IN_ADDR }, /* 6? */
308 [RTA_SRC] = { .type = NLA_IN_ADDR }, /* 6? */
309 [RTA_IIF] = { .type = NLA_U32 },
310 [RTA_OIF] = { .type = NLA_U32 },
311 [RTA_GATEWAY] = { .type = NLA_IN_ADDR },
312 [RTA_PRIORITY] = { .type = NLA_U32 },
313 [RTA_PREFSRC] = { .type = NLA_IN_ADDR }, /* 6? */
315 [RTA_METRICS] = { .type = NLA_NESTED },
316 [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
318 [RTA_FLOW] = { .type = NLA_U32 }, /* 6? */
327 static const NLTypeSystem rtnl_route_type_system = {
328 .max = ELEMENTSOF(rtnl_route_types) - 1,
329 .types = rtnl_route_types,
332 static const NLType rtnl_neigh_types[NDA_MAX + 1] = {
333 [NDA_DST] = { .type = NLA_IN_ADDR },
334 [NDA_LLADDR] = { .type = NLA_ETHER_ADDR },
346 static const NLTypeSystem rtnl_neigh_type_system = {
347 .max = ELEMENTSOF(rtnl_neigh_types) - 1,
348 .types = rtnl_neigh_types,
351 static const NLType rtnl_types[RTM_MAX + 1] = {
352 [NLMSG_ERROR] = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
353 [RTM_NEWLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
354 [RTM_DELLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
355 [RTM_GETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
356 [RTM_SETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
357 [RTM_NEWADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
358 [RTM_DELADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
359 [RTM_GETADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
360 [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
361 [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
362 [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
363 [RTM_NEWNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
364 [RTM_DELNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
365 [RTM_GETNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
368 const NLTypeSystem rtnl_type_system = {
369 .max = ELEMENTSOF(rtnl_types) - 1,
373 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
374 const NLType *nl_type;
379 type_system = &rtnl_type_system;
381 assert(type_system->types);
383 if (type > type_system->max)
386 nl_type = &type_system->types[type];
388 if (nl_type->type == NLA_UNSPEC)
396 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
397 const NLType *nl_type;
402 r = type_system_get_type(type_system, &nl_type, type);
406 assert_return(nl_type->type == NLA_NESTED, -EINVAL);
408 assert(nl_type->type_system);
410 *ret = nl_type->type_system;
415 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
416 const NLType *nl_type;
421 r = type_system_get_type(type_system, &nl_type, type);
425 assert_return(nl_type->type == NLA_UNION, -EINVAL);
427 assert(nl_type->type_system_union);
429 *ret = nl_type->type_system_union;
434 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
437 assert(type_system_union);
438 assert(type_system_union->lookup);
439 assert(type_system_union->type_systems);
443 type = type_system_union->lookup(key);
447 assert(type < type_system_union->num);
449 *ret = &type_system_union->type_systems[type];