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sd-netlink: add support for address label
[thirdparty/systemd.git] / src / libsystemd / sd-netlink / netlink-types.c
1 /***
2 This file is part of systemd.
3
4 Copyright 2014 Tom Gundersen <teg@jklm.no>
5
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
10
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 #include <stdint.h>
21 #include <sys/socket.h>
22 #include <linux/netlink.h>
23 #include <linux/rtnetlink.h>
24 #include <linux/can/netlink.h>
25 #include <linux/in6.h>
26 #include <linux/veth.h>
27 #include <linux/if_bridge.h>
28 #include <linux/if_addr.h>
29 #include <linux/if_addrlabel.h>
30 #include <linux/if.h>
31 #include <linux/ip.h>
32 #include <linux/if_link.h>
33 #include <linux/if_tunnel.h>
34
35 #include "macro.h"
36 #include "missing.h"
37 #include "netlink-types.h"
38 #include "string-table.h"
39 #include "util.h"
40
41 /* Maximum ARP IP target defined in kernel */
42 #define BOND_MAX_ARP_TARGETS 16
43
44 typedef enum {
45 BOND_ARP_TARGETS_0,
46 BOND_ARP_TARGETS_1,
47 BOND_ARP_TARGETS_2,
48 BOND_ARP_TARGETS_3,
49 BOND_ARP_TARGETS_4,
50 BOND_ARP_TARGETS_5,
51 BOND_ARP_TARGETS_6,
52 BOND_ARP_TARGETS_7,
53 BOND_ARP_TARGETS_8,
54 BOND_ARP_TARGETS_9,
55 BOND_ARP_TARGETS_10,
56 BOND_ARP_TARGETS_11,
57 BOND_ARP_TARGETS_12,
58 BOND_ARP_TARGETS_13,
59 BOND_ARP_TARGETS_14,
60 BOND_ARP_TARGETS_MAX = BOND_MAX_ARP_TARGETS,
61 } BondArpTargets;
62
63 struct NLType {
64 uint16_t type;
65 size_t size;
66 const NLTypeSystem *type_system;
67 const NLTypeSystemUnion *type_system_union;
68 };
69
70 struct NLTypeSystem {
71 uint16_t count;
72 const NLType *types;
73 };
74
75 static const NLTypeSystem rtnl_link_type_system;
76
77 static const NLType empty_types[1] = {
78 /* fake array to avoid .types==NULL, which denotes invalid type-systems */
79 };
80
81 static const NLTypeSystem empty_type_system = {
82 .count = 0,
83 .types = empty_types,
84 };
85
86 static const NLType rtnl_link_info_data_veth_types[] = {
87 [VETH_INFO_PEER] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
88 };
89
90 static const NLType rtnl_link_info_data_ipvlan_types[] = {
91 [IFLA_IPVLAN_MODE] = { .type = NETLINK_TYPE_U16 },
92 };
93
94 static const NLType rtnl_link_info_data_macvlan_types[] = {
95 [IFLA_MACVLAN_MODE] = { .type = NETLINK_TYPE_U32 },
96 [IFLA_MACVLAN_FLAGS] = { .type = NETLINK_TYPE_U16 },
97 };
98
99 static const NLType rtnl_link_info_data_bridge_types[] = {
100 [IFLA_BR_FORWARD_DELAY] = { .type = NETLINK_TYPE_U32 },
101 [IFLA_BR_HELLO_TIME] = { .type = NETLINK_TYPE_U32 },
102 [IFLA_BR_MAX_AGE] = { .type = NETLINK_TYPE_U32 },
103 [IFLA_BR_AGEING_TIME] = { .type = NETLINK_TYPE_U32 },
104 [IFLA_BR_STP_STATE] = { .type = NETLINK_TYPE_U32 },
105 [IFLA_BR_PRIORITY] = { .type = NETLINK_TYPE_U16 },
106 [IFLA_BR_VLAN_FILTERING] = { .type = NETLINK_TYPE_U8 },
107 [IFLA_BR_VLAN_PROTOCOL] = { .type = NETLINK_TYPE_U16 },
108 [IFLA_BR_GROUP_FWD_MASK] = { .type = NETLINK_TYPE_U16 },
109 [IFLA_BR_ROOT_PORT] = { .type = NETLINK_TYPE_U16 },
110 [IFLA_BR_ROOT_PATH_COST] = { .type = NETLINK_TYPE_U32 },
111 [IFLA_BR_TOPOLOGY_CHANGE] = { .type = NETLINK_TYPE_U8 },
112 [IFLA_BR_TOPOLOGY_CHANGE_DETECTED] = { .type = NETLINK_TYPE_U8 },
113 [IFLA_BR_HELLO_TIMER] = { .type = NETLINK_TYPE_U16 },
114 [IFLA_BR_TCN_TIMER] = { .type = NETLINK_TYPE_U16 },
115 [IFLA_BR_TOPOLOGY_CHANGE_TIMER] = { .type = NETLINK_TYPE_U16 },
116 [IFLA_BR_GC_TIMER] = { .type = NETLINK_TYPE_U64 },
117 [IFLA_BR_GROUP_ADDR] = { .type = NETLINK_TYPE_U16 },
118 [IFLA_BR_FDB_FLUSH] = { .type = NETLINK_TYPE_U16 },
119 [IFLA_BR_MCAST_ROUTER] = { .type = NETLINK_TYPE_U8 },
120 [IFLA_BR_MCAST_SNOOPING] = { .type = NETLINK_TYPE_U8 },
121 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NETLINK_TYPE_U8 },
122 [IFLA_BR_MCAST_QUERIER] = { .type = NETLINK_TYPE_U8 },
123 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NETLINK_TYPE_U32 },
124 [IFLA_BR_MCAST_HASH_MAX] = { .type = NETLINK_TYPE_U16 },
125 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NETLINK_TYPE_U32 },
126 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NETLINK_TYPE_U16 },
127 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NETLINK_TYPE_U64 },
128 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NETLINK_TYPE_U64 },
129 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NETLINK_TYPE_U64 },
130 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NETLINK_TYPE_U64 },
131 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NETLINK_TYPE_U64 },
132 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NETLINK_TYPE_U64 },
133 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NETLINK_TYPE_U8 },
134 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NETLINK_TYPE_U8 },
135 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NETLINK_TYPE_U8 },
136 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NETLINK_TYPE_U16 },
137 };
138
139 static const NLType rtnl_link_info_data_vlan_types[] = {
140 [IFLA_VLAN_ID] = { .type = NETLINK_TYPE_U16 },
141 /*
142 [IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) },
143 [IFLA_VLAN_EGRESS_QOS] = { .type = NETLINK_TYPE_NESTED },
144 [IFLA_VLAN_INGRESS_QOS] = { .type = NETLINK_TYPE_NESTED },
145 */
146 [IFLA_VLAN_PROTOCOL] = { .type = NETLINK_TYPE_U16 },
147 };
148
149 static const NLType rtnl_link_info_data_vxlan_types[] = {
150 [IFLA_VXLAN_ID] = { .type = NETLINK_TYPE_U32 },
151 [IFLA_VXLAN_GROUP] = { .type = NETLINK_TYPE_IN_ADDR },
152 [IFLA_VXLAN_LINK] = { .type = NETLINK_TYPE_U32 },
153 [IFLA_VXLAN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
154 [IFLA_VXLAN_TTL] = { .type = NETLINK_TYPE_U8 },
155 [IFLA_VXLAN_TOS] = { .type = NETLINK_TYPE_U8 },
156 [IFLA_VXLAN_LEARNING] = { .type = NETLINK_TYPE_U8 },
157 [IFLA_VXLAN_AGEING] = { .type = NETLINK_TYPE_U32 },
158 [IFLA_VXLAN_LIMIT] = { .type = NETLINK_TYPE_U32 },
159 [IFLA_VXLAN_PORT_RANGE] = { .type = NETLINK_TYPE_U32},
160 [IFLA_VXLAN_PROXY] = { .type = NETLINK_TYPE_U8 },
161 [IFLA_VXLAN_RSC] = { .type = NETLINK_TYPE_U8 },
162 [IFLA_VXLAN_L2MISS] = { .type = NETLINK_TYPE_U8 },
163 [IFLA_VXLAN_L3MISS] = { .type = NETLINK_TYPE_U8 },
164 [IFLA_VXLAN_PORT] = { .type = NETLINK_TYPE_U16 },
165 [IFLA_VXLAN_GROUP6] = { .type = NETLINK_TYPE_IN_ADDR },
166 [IFLA_VXLAN_LOCAL6] = { .type = NETLINK_TYPE_IN_ADDR },
167 [IFLA_VXLAN_UDP_CSUM] = { .type = NETLINK_TYPE_U8 },
168 [IFLA_VXLAN_UDP_ZERO_CSUM6_TX] = { .type = NETLINK_TYPE_U8 },
169 [IFLA_VXLAN_UDP_ZERO_CSUM6_RX] = { .type = NETLINK_TYPE_U8 },
170 [IFLA_VXLAN_REMCSUM_TX] = { .type = NETLINK_TYPE_U8 },
171 [IFLA_VXLAN_REMCSUM_RX] = { .type = NETLINK_TYPE_U8 },
172 [IFLA_VXLAN_GBP] = { .type = NETLINK_TYPE_FLAG },
173 [IFLA_VXLAN_REMCSUM_NOPARTIAL] = { .type = NETLINK_TYPE_FLAG },
174 [IFLA_VXLAN_COLLECT_METADATA] = { .type = NETLINK_TYPE_U8 },
175 [IFLA_VXLAN_LABEL] = { .type = NETLINK_TYPE_U32 },
176 [IFLA_VXLAN_GPE] = { .type = NETLINK_TYPE_FLAG },
177 };
178
179 static const NLType rtnl_bond_arp_target_types[] = {
180 [BOND_ARP_TARGETS_0] = { .type = NETLINK_TYPE_U32 },
181 [BOND_ARP_TARGETS_1] = { .type = NETLINK_TYPE_U32 },
182 [BOND_ARP_TARGETS_2] = { .type = NETLINK_TYPE_U32 },
183 [BOND_ARP_TARGETS_3] = { .type = NETLINK_TYPE_U32 },
184 [BOND_ARP_TARGETS_4] = { .type = NETLINK_TYPE_U32 },
185 [BOND_ARP_TARGETS_5] = { .type = NETLINK_TYPE_U32 },
186 [BOND_ARP_TARGETS_6] = { .type = NETLINK_TYPE_U32 },
187 [BOND_ARP_TARGETS_7] = { .type = NETLINK_TYPE_U32 },
188 [BOND_ARP_TARGETS_8] = { .type = NETLINK_TYPE_U32 },
189 [BOND_ARP_TARGETS_9] = { .type = NETLINK_TYPE_U32 },
190 [BOND_ARP_TARGETS_10] = { .type = NETLINK_TYPE_U32 },
191 [BOND_ARP_TARGETS_11] = { .type = NETLINK_TYPE_U32 },
192 [BOND_ARP_TARGETS_12] = { .type = NETLINK_TYPE_U32 },
193 [BOND_ARP_TARGETS_13] = { .type = NETLINK_TYPE_U32 },
194 [BOND_ARP_TARGETS_14] = { .type = NETLINK_TYPE_U32 },
195 [BOND_ARP_TARGETS_MAX] = { .type = NETLINK_TYPE_U32 },
196 };
197
198 static const NLTypeSystem rtnl_bond_arp_type_system = {
199 .count = ELEMENTSOF(rtnl_bond_arp_target_types),
200 .types = rtnl_bond_arp_target_types,
201 };
202
203 static const NLType rtnl_link_info_data_bond_types[] = {
204 [IFLA_BOND_MODE] = { .type = NETLINK_TYPE_U8 },
205 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NETLINK_TYPE_U32 },
206 [IFLA_BOND_MIIMON] = { .type = NETLINK_TYPE_U32 },
207 [IFLA_BOND_UPDELAY] = { .type = NETLINK_TYPE_U32 },
208 [IFLA_BOND_DOWNDELAY] = { .type = NETLINK_TYPE_U32 },
209 [IFLA_BOND_USE_CARRIER] = { .type = NETLINK_TYPE_U8 },
210 [IFLA_BOND_ARP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
211 [IFLA_BOND_ARP_IP_TARGET] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_bond_arp_type_system },
212 [IFLA_BOND_ARP_VALIDATE] = { .type = NETLINK_TYPE_U32 },
213 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NETLINK_TYPE_U32 },
214 [IFLA_BOND_PRIMARY] = { .type = NETLINK_TYPE_U32 },
215 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NETLINK_TYPE_U8 },
216 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NETLINK_TYPE_U8 },
217 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NETLINK_TYPE_U8 },
218 [IFLA_BOND_RESEND_IGMP] = { .type = NETLINK_TYPE_U32 },
219 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NETLINK_TYPE_U8 },
220 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NETLINK_TYPE_U8 },
221 [IFLA_BOND_MIN_LINKS] = { .type = NETLINK_TYPE_U32 },
222 [IFLA_BOND_LP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
223 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NETLINK_TYPE_U32 },
224 [IFLA_BOND_AD_LACP_RATE] = { .type = NETLINK_TYPE_U8 },
225 [IFLA_BOND_AD_SELECT] = { .type = NETLINK_TYPE_U8 },
226 [IFLA_BOND_AD_INFO] = { .type = NETLINK_TYPE_NESTED },
227 };
228
229 static const NLType rtnl_link_info_data_iptun_types[] = {
230 [IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 },
231 [IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
232 [IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
233 [IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 },
234 [IFLA_IPTUN_TOS] = { .type = NETLINK_TYPE_U8 },
235 [IFLA_IPTUN_PMTUDISC] = { .type = NETLINK_TYPE_U8 },
236 [IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U16 },
237 [IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 },
238 [IFLA_IPTUN_6RD_PREFIX] = { .type = NETLINK_TYPE_IN_ADDR },
239 [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NETLINK_TYPE_U32 },
240 [IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NETLINK_TYPE_U16 },
241 [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NETLINK_TYPE_U16 },
242 [IFLA_IPTUN_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
243 [IFLA_IPTUN_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 },
244 [IFLA_IPTUN_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 },
245 [IFLA_IPTUN_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 },
246 };
247
248 static const NLType rtnl_link_info_data_ipgre_types[] = {
249 [IFLA_GRE_LINK] = { .type = NETLINK_TYPE_U32 },
250 [IFLA_GRE_IFLAGS] = { .type = NETLINK_TYPE_U16 },
251 [IFLA_GRE_OFLAGS] = { .type = NETLINK_TYPE_U16 },
252 [IFLA_GRE_IKEY] = { .type = NETLINK_TYPE_U32 },
253 [IFLA_GRE_OKEY] = { .type = NETLINK_TYPE_U32 },
254 [IFLA_GRE_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
255 [IFLA_GRE_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
256 [IFLA_GRE_TTL] = { .type = NETLINK_TYPE_U8 },
257 [IFLA_GRE_TOS] = { .type = NETLINK_TYPE_U8 },
258 [IFLA_GRE_PMTUDISC] = { .type = NETLINK_TYPE_U8 },
259 [IFLA_GRE_FLOWINFO] = { .type = NETLINK_TYPE_U32 },
260 [IFLA_GRE_FLAGS] = { .type = NETLINK_TYPE_U32 },
261 [IFLA_GRE_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
262 [IFLA_GRE_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 },
263 [IFLA_GRE_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 },
264 [IFLA_GRE_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 },
265 };
266
267 static const NLType rtnl_link_info_data_ipvti_types[] = {
268 [IFLA_VTI_LINK] = { .type = NETLINK_TYPE_U32 },
269 [IFLA_VTI_IKEY] = { .type = NETLINK_TYPE_U32 },
270 [IFLA_VTI_OKEY] = { .type = NETLINK_TYPE_U32 },
271 [IFLA_VTI_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
272 [IFLA_VTI_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
273 };
274
275 static const NLType rtnl_link_info_data_ip6tnl_types[] = {
276 [IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 },
277 [IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
278 [IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
279 [IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 },
280 [IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U32 },
281 [IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 },
282 [IFLA_IPTUN_ENCAP_LIMIT] = { .type = NETLINK_TYPE_U8 },
283 [IFLA_IPTUN_FLOWINFO] = { .type = NETLINK_TYPE_U32 },
284 };
285
286 static const NLType rtnl_link_info_data_vrf_types[] = {
287 [IFLA_VRF_TABLE] = { .type = NETLINK_TYPE_U32 },
288 };
289
290 static const NLType rtnl_link_info_data_geneve_types[] = {
291 [IFLA_GENEVE_ID] = { .type = NETLINK_TYPE_U32 },
292 [IFLA_GENEVE_TTL] = { .type = NETLINK_TYPE_U8 },
293 [IFLA_GENEVE_TOS] = { .type = NETLINK_TYPE_U8 },
294 [IFLA_GENEVE_PORT] = { .type = NETLINK_TYPE_U16 },
295 [IFLA_GENEVE_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
296 [IFLA_GENEVE_REMOTE6] = { .type = NETLINK_TYPE_IN_ADDR },
297 [IFLA_GENEVE_UDP_CSUM] = { .type = NETLINK_TYPE_U8 },
298 [IFLA_GENEVE_UDP_ZERO_CSUM6_TX] = { .type = NETLINK_TYPE_U8 },
299 [IFLA_GENEVE_UDP_ZERO_CSUM6_RX] = { .type = NETLINK_TYPE_U8 },
300 [IFLA_GENEVE_LABEL] = { .type = NETLINK_TYPE_U32 },
301 };
302
303 /* these strings must match the .kind entries in the kernel */
304 static const char* const nl_union_link_info_data_table[] = {
305 [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
306 [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
307 [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
308 [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
309 [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
310 [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
311 [NL_UNION_LINK_INFO_DATA_MACVTAP] = "macvtap",
312 [NL_UNION_LINK_INFO_DATA_IPVLAN] = "ipvlan",
313 [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
314 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
315 [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
316 [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = "gretap",
317 [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = "ip6gre",
318 [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = "ip6gretap",
319 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
320 [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
321 [NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = "vti6",
322 [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = "ip6tnl",
323 [NL_UNION_LINK_INFO_DATA_VRF] = "vrf",
324 [NL_UNION_LINK_INFO_DATA_VCAN] = "vcan",
325 [NL_UNION_LINK_INFO_DATA_GENEVE] = "geneve",
326 };
327
328 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
329
330 static const NLTypeSystem rtnl_link_info_data_type_systems[] = {
331 [NL_UNION_LINK_INFO_DATA_BOND] = { .count = ELEMENTSOF(rtnl_link_info_data_bond_types),
332 .types = rtnl_link_info_data_bond_types },
333 [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .count = ELEMENTSOF(rtnl_link_info_data_bridge_types),
334 .types = rtnl_link_info_data_bridge_types },
335 [NL_UNION_LINK_INFO_DATA_VLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vlan_types),
336 .types = rtnl_link_info_data_vlan_types },
337 [NL_UNION_LINK_INFO_DATA_VETH] = { .count = ELEMENTSOF(rtnl_link_info_data_veth_types),
338 .types = rtnl_link_info_data_veth_types },
339 [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types),
340 .types = rtnl_link_info_data_macvlan_types },
341 [NL_UNION_LINK_INFO_DATA_MACVTAP] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types),
342 .types = rtnl_link_info_data_macvlan_types },
343 [NL_UNION_LINK_INFO_DATA_IPVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvlan_types),
344 .types = rtnl_link_info_data_ipvlan_types },
345 [NL_UNION_LINK_INFO_DATA_VXLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vxlan_types),
346 .types = rtnl_link_info_data_vxlan_types },
347 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types),
348 .types = rtnl_link_info_data_iptun_types },
349 [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
350 .types = rtnl_link_info_data_ipgre_types },
351 [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
352 .types = rtnl_link_info_data_ipgre_types },
353 [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
354 .types = rtnl_link_info_data_ipgre_types },
355 [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
356 .types = rtnl_link_info_data_ipgre_types },
357 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types),
358 .types = rtnl_link_info_data_iptun_types },
359 [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types),
360 .types = rtnl_link_info_data_ipvti_types },
361 [NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types),
362 .types = rtnl_link_info_data_ipvti_types },
363 [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ip6tnl_types),
364 .types = rtnl_link_info_data_ip6tnl_types },
365 [NL_UNION_LINK_INFO_DATA_VRF] = { .count = ELEMENTSOF(rtnl_link_info_data_vrf_types),
366 .types = rtnl_link_info_data_vrf_types },
367 [NL_UNION_LINK_INFO_DATA_GENEVE] = { .count = ELEMENTSOF(rtnl_link_info_data_geneve_types),
368 .types = rtnl_link_info_data_geneve_types },
369 };
370
371 static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
372 .num = _NL_UNION_LINK_INFO_DATA_MAX,
373 .lookup = nl_union_link_info_data_from_string,
374 .type_systems = rtnl_link_info_data_type_systems,
375 .match_type = NL_MATCH_SIBLING,
376 .match = IFLA_INFO_KIND,
377 };
378
379 static const NLType rtnl_link_info_types[] = {
380 [IFLA_INFO_KIND] = { .type = NETLINK_TYPE_STRING },
381 [IFLA_INFO_DATA] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
382 /*
383 [IFLA_INFO_XSTATS],
384 [IFLA_INFO_SLAVE_KIND] = { .type = NETLINK_TYPE_STRING },
385 [IFLA_INFO_SLAVE_DATA] = { .type = NETLINK_TYPE_NESTED },
386 */
387 };
388
389 static const NLTypeSystem rtnl_link_info_type_system = {
390 .count = ELEMENTSOF(rtnl_link_info_types),
391 .types = rtnl_link_info_types,
392 };
393
394 static const struct NLType rtnl_prot_info_bridge_port_types[] = {
395 [IFLA_BRPORT_STATE] = { .type = NETLINK_TYPE_U8 },
396 [IFLA_BRPORT_COST] = { .type = NETLINK_TYPE_U32 },
397 [IFLA_BRPORT_PRIORITY] = { .type = NETLINK_TYPE_U16 },
398 [IFLA_BRPORT_MODE] = { .type = NETLINK_TYPE_U8 },
399 [IFLA_BRPORT_GUARD] = { .type = NETLINK_TYPE_U8 },
400 [IFLA_BRPORT_PROTECT] = { .type = NETLINK_TYPE_U8 },
401 [IFLA_BRPORT_FAST_LEAVE] = { .type = NETLINK_TYPE_U8 },
402 [IFLA_BRPORT_LEARNING] = { .type = NETLINK_TYPE_U8 },
403 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NETLINK_TYPE_U8 },
404 [IFLA_BRPORT_PROXYARP] = { .type = NETLINK_TYPE_U8 },
405 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NETLINK_TYPE_U8 },
406 };
407
408 static const NLTypeSystem rtnl_prot_info_type_systems[] = {
409 [AF_BRIDGE] = { .count = ELEMENTSOF(rtnl_prot_info_bridge_port_types),
410 .types = rtnl_prot_info_bridge_port_types },
411 };
412
413 static const NLTypeSystemUnion rtnl_prot_info_type_system_union = {
414 .num = AF_MAX,
415 .type_systems = rtnl_prot_info_type_systems,
416 .match_type = NL_MATCH_PROTOCOL,
417 };
418
419 static const struct NLType rtnl_af_spec_inet6_types[] = {
420 [IFLA_INET6_FLAGS] = { .type = NETLINK_TYPE_U32 },
421 /*
422 IFLA_INET6_CONF,
423 IFLA_INET6_STATS,
424 IFLA_INET6_MCAST,
425 IFLA_INET6_CACHEINFO,
426 IFLA_INET6_ICMP6STATS,
427 */
428 [IFLA_INET6_TOKEN] = { .type = NETLINK_TYPE_IN_ADDR },
429 [IFLA_INET6_ADDR_GEN_MODE] = { .type = NETLINK_TYPE_U8 },
430 };
431
432 static const NLTypeSystem rtnl_af_spec_inet6_type_system = {
433 .count = ELEMENTSOF(rtnl_af_spec_inet6_types),
434 .types = rtnl_af_spec_inet6_types,
435 };
436
437 static const NLType rtnl_af_spec_types[] = {
438 [AF_INET6] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_inet6_type_system },
439 };
440
441 static const NLTypeSystem rtnl_af_spec_type_system = {
442 .count = ELEMENTSOF(rtnl_af_spec_types),
443 .types = rtnl_af_spec_types,
444 };
445
446 static const NLType rtnl_link_types[] = {
447 [IFLA_ADDRESS] = { .type = NETLINK_TYPE_ETHER_ADDR },
448 [IFLA_BROADCAST] = { .type = NETLINK_TYPE_ETHER_ADDR },
449 [IFLA_IFNAME] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
450 [IFLA_MTU] = { .type = NETLINK_TYPE_U32 },
451 [IFLA_LINK] = { .type = NETLINK_TYPE_U32 },
452 /*
453 [IFLA_QDISC],
454 [IFLA_STATS],
455 [IFLA_COST],
456 [IFLA_PRIORITY],
457 */
458 [IFLA_MASTER] = { .type = NETLINK_TYPE_U32 },
459 /*
460 [IFLA_WIRELESS],
461 */
462 [IFLA_PROTINFO] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_prot_info_type_system_union },
463 [IFLA_TXQLEN] = { .type = NETLINK_TYPE_U32 },
464 /*
465 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
466 */
467 [IFLA_WEIGHT] = { .type = NETLINK_TYPE_U32 },
468 [IFLA_OPERSTATE] = { .type = NETLINK_TYPE_U8 },
469 [IFLA_LINKMODE] = { .type = NETLINK_TYPE_U8 },
470 [IFLA_LINKINFO] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_info_type_system },
471 [IFLA_NET_NS_PID] = { .type = NETLINK_TYPE_U32 },
472 [IFLA_IFALIAS] = { .type = NETLINK_TYPE_STRING, .size = IFALIASZ - 1 },
473 /*
474 [IFLA_NUM_VF],
475 [IFLA_VFINFO_LIST] = {. type = NETLINK_TYPE_NESTED, },
476 [IFLA_STATS64],
477 [IFLA_VF_PORTS] = { .type = NETLINK_TYPE_NESTED },
478 [IFLA_PORT_SELF] = { .type = NETLINK_TYPE_NESTED },
479 */
480 [IFLA_AF_SPEC] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_type_system },
481 /*
482 [IFLA_VF_PORTS],
483 [IFLA_PORT_SELF],
484 [IFLA_AF_SPEC],
485 */
486 [IFLA_GROUP] = { .type = NETLINK_TYPE_U32 },
487 [IFLA_NET_NS_FD] = { .type = NETLINK_TYPE_U32 },
488 [IFLA_EXT_MASK] = { .type = NETLINK_TYPE_U32 },
489 [IFLA_PROMISCUITY] = { .type = NETLINK_TYPE_U32 },
490 [IFLA_NUM_TX_QUEUES] = { .type = NETLINK_TYPE_U32 },
491 [IFLA_NUM_RX_QUEUES] = { .type = NETLINK_TYPE_U32 },
492 [IFLA_CARRIER] = { .type = NETLINK_TYPE_U8 },
493 /*
494 [IFLA_PHYS_PORT_ID] = { .type = NETLINK_TYPE_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
495 */
496 };
497
498 static const NLTypeSystem rtnl_link_type_system = {
499 .count = ELEMENTSOF(rtnl_link_types),
500 .types = rtnl_link_types,
501 };
502
503 /* IFA_FLAGS was defined in kernel 3.14, but we still support older
504 * kernels where IFA_MAX is lower. */
505 static const NLType rtnl_address_types[] = {
506 [IFA_ADDRESS] = { .type = NETLINK_TYPE_IN_ADDR },
507 [IFA_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
508 [IFA_LABEL] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
509 [IFA_BROADCAST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
510 [IFA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
511 /*
512 [IFA_ANYCAST],
513 [IFA_MULTICAST],
514 */
515 [IFA_FLAGS] = { .type = NETLINK_TYPE_U32 },
516 };
517
518 static const NLTypeSystem rtnl_address_type_system = {
519 .count = ELEMENTSOF(rtnl_address_types),
520 .types = rtnl_address_types,
521 };
522
523 /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
524
525 static const NLType rtnl_route_metrics_types[] = {
526 [RTAX_MTU] = { .type = NETLINK_TYPE_U32 },
527 [RTAX_WINDOW] = { .type = NETLINK_TYPE_U32 },
528 [RTAX_RTT] = { .type = NETLINK_TYPE_U32 },
529 [RTAX_RTTVAR] = { .type = NETLINK_TYPE_U32 },
530 [RTAX_SSTHRESH] = { .type = NETLINK_TYPE_U32 },
531 [RTAX_CWND] = { .type = NETLINK_TYPE_U32 },
532 [RTAX_ADVMSS] = { .type = NETLINK_TYPE_U32 },
533 [RTAX_REORDERING] = { .type = NETLINK_TYPE_U32 },
534 [RTAX_HOPLIMIT] = { .type = NETLINK_TYPE_U32 },
535 [RTAX_INITCWND] = { .type = NETLINK_TYPE_U32 },
536 [RTAX_FEATURES] = { .type = NETLINK_TYPE_U32 },
537 [RTAX_RTO_MIN] = { .type = NETLINK_TYPE_U32 },
538 };
539
540 static const NLTypeSystem rtnl_route_metrics_type_system = {
541 .count = ELEMENTSOF(rtnl_route_metrics_types),
542 .types = rtnl_route_metrics_types,
543 };
544
545 static const NLType rtnl_route_types[] = {
546 [RTA_DST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
547 [RTA_SRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
548 [RTA_IIF] = { .type = NETLINK_TYPE_U32 },
549 [RTA_OIF] = { .type = NETLINK_TYPE_U32 },
550 [RTA_GATEWAY] = { .type = NETLINK_TYPE_IN_ADDR },
551 [RTA_PRIORITY] = { .type = NETLINK_TYPE_U32 },
552 [RTA_PREFSRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
553 [RTA_METRICS] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_metrics_type_system},
554 /* [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
555 */
556 [RTA_FLOW] = { .type = NETLINK_TYPE_U32 }, /* 6? */
557 /*
558 RTA_CACHEINFO,
559 RTA_TABLE,
560 RTA_MARK,
561 RTA_MFC_STATS,
562 RTA_VIA,
563 RTA_NEWDST,
564 */
565 [RTA_PREF] = { .type = NETLINK_TYPE_U8 },
566
567 };
568
569 static const NLTypeSystem rtnl_route_type_system = {
570 .count = ELEMENTSOF(rtnl_route_types),
571 .types = rtnl_route_types,
572 };
573
574 static const NLType rtnl_neigh_types[] = {
575 [NDA_DST] = { .type = NETLINK_TYPE_IN_ADDR },
576 [NDA_LLADDR] = { .type = NETLINK_TYPE_ETHER_ADDR },
577 [NDA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct nda_cacheinfo) },
578 [NDA_PROBES] = { .type = NETLINK_TYPE_U32 },
579 [NDA_VLAN] = { .type = NETLINK_TYPE_U16 },
580 [NDA_PORT] = { .type = NETLINK_TYPE_U16 },
581 [NDA_VNI] = { .type = NETLINK_TYPE_U32 },
582 [NDA_IFINDEX] = { .type = NETLINK_TYPE_U32 },
583 };
584
585 static const NLTypeSystem rtnl_neigh_type_system = {
586 .count = ELEMENTSOF(rtnl_neigh_types),
587 .types = rtnl_neigh_types,
588 };
589
590 static const NLType rtnl_addrlabel_types[] = {
591 [IFAL_ADDRESS] = { .type = NETLINK_TYPE_IN_ADDR, .size = sizeof(struct in6_addr) },
592 [IFAL_LABEL] = { .type = NETLINK_TYPE_U32 },
593 };
594
595 static const NLTypeSystem rtnl_addrlabel_type_system = {
596 .count = ELEMENTSOF(rtnl_addrlabel_types),
597 .types = rtnl_addrlabel_types,
598 };
599
600 static const NLType rtnl_types[] = {
601 [NLMSG_DONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = 0 },
602 [NLMSG_ERROR] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = sizeof(struct nlmsgerr) },
603 [RTM_NEWLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
604 [RTM_DELLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
605 [RTM_GETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
606 [RTM_SETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
607 [RTM_NEWADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
608 [RTM_DELADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
609 [RTM_GETADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
610 [RTM_NEWROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
611 [RTM_DELROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
612 [RTM_GETROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
613 [RTM_NEWNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
614 [RTM_DELNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
615 [RTM_GETNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
616 [RTM_NEWADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
617 [RTM_DELADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
618 [RTM_GETADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
619 };
620
621 const NLTypeSystem type_system_root = {
622 .count = ELEMENTSOF(rtnl_types),
623 .types = rtnl_types,
624 };
625
626 uint16_t type_get_type(const NLType *type) {
627 assert(type);
628 return type->type;
629 }
630
631 size_t type_get_size(const NLType *type) {
632 assert(type);
633 return type->size;
634 }
635
636 void type_get_type_system(const NLType *nl_type, const NLTypeSystem **ret) {
637 assert(nl_type);
638 assert(ret);
639 assert(nl_type->type == NETLINK_TYPE_NESTED);
640 assert(nl_type->type_system);
641
642 *ret = nl_type->type_system;
643 }
644
645 void type_get_type_system_union(const NLType *nl_type, const NLTypeSystemUnion **ret) {
646 assert(nl_type);
647 assert(ret);
648 assert(nl_type->type == NETLINK_TYPE_UNION);
649 assert(nl_type->type_system_union);
650
651 *ret = nl_type->type_system_union;
652 }
653
654 uint16_t type_system_get_count(const NLTypeSystem *type_system) {
655 assert(type_system);
656 return type_system->count;
657 }
658
659 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
660 const NLType *nl_type;
661
662 assert(ret);
663 assert(type_system);
664 assert(type_system->types);
665
666 if (type >= type_system->count)
667 return -EOPNOTSUPP;
668
669 nl_type = &type_system->types[type];
670
671 if (nl_type->type == NETLINK_TYPE_UNSPEC)
672 return -EOPNOTSUPP;
673
674 *ret = nl_type;
675
676 return 0;
677 }
678
679 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
680 const NLType *nl_type;
681 int r;
682
683 assert(ret);
684
685 r = type_system_get_type(type_system, &nl_type, type);
686 if (r < 0)
687 return r;
688
689 type_get_type_system(nl_type, ret);
690 return 0;
691 }
692
693 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
694 const NLType *nl_type;
695 int r;
696
697 assert(ret);
698
699 r = type_system_get_type(type_system, &nl_type, type);
700 if (r < 0)
701 return r;
702
703 type_get_type_system_union(nl_type, ret);
704 return 0;
705 }
706
707 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
708 int type;
709
710 assert(type_system_union);
711 assert(type_system_union->match_type == NL_MATCH_SIBLING);
712 assert(type_system_union->lookup);
713 assert(type_system_union->type_systems);
714 assert(ret);
715 assert(key);
716
717 type = type_system_union->lookup(key);
718 if (type < 0)
719 return -EOPNOTSUPP;
720
721 assert(type < type_system_union->num);
722
723 *ret = &type_system_union->type_systems[type];
724
725 return 0;
726 }
727
728 int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
729 const NLTypeSystem *type_system;
730
731 assert(type_system_union);
732 assert(type_system_union->type_systems);
733 assert(type_system_union->match_type == NL_MATCH_PROTOCOL);
734 assert(ret);
735
736 if (protocol >= type_system_union->num)
737 return -EOPNOTSUPP;
738
739 type_system = &type_system_union->type_systems[protocol];
740 if (!type_system->types)
741 return -EOPNOTSUPP;
742
743 *ret = type_system;
744
745 return 0;
746 }
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