Line data Source code
1 : /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2 :
3 : /***
4 : This file is part of systemd.
5 :
6 : Copyright 2014 Tom Gundersen <teg@jklm.no>
7 :
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.
12 :
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.
17 :
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/>.
20 : ***/
21 :
22 : #include <stdint.h>
23 : #include <sys/socket.h>
24 : #include <linux/netlink.h>
25 : #include <linux/rtnetlink.h>
26 : #include <linux/in6.h>
27 : #include <linux/veth.h>
28 : #include <linux/if_bridge.h>
29 : #include <linux/if_addr.h>
30 : #include <linux/if.h>
31 :
32 : #include <linux/ip.h>
33 : #include <linux/if_link.h>
34 : #include <linux/if_tunnel.h>
35 :
36 : #include "macro.h"
37 : #include "util.h"
38 :
39 : #include "netlink-types.h"
40 : #include "missing.h"
41 :
42 : /* Maximum ARP IP target defined in kernel */
43 : #define BOND_MAX_ARP_TARGETS 16
44 :
45 : typedef enum {
46 : BOND_ARP_TARGETS_0,
47 : BOND_ARP_TARGETS_1,
48 : BOND_ARP_TARGETS_2,
49 : BOND_ARP_TARGETS_3,
50 : BOND_ARP_TARGETS_4,
51 : BOND_ARP_TARGETS_5,
52 : BOND_ARP_TARGETS_6,
53 : BOND_ARP_TARGETS_7,
54 : BOND_ARP_TARGETS_8,
55 : BOND_ARP_TARGETS_9,
56 : BOND_ARP_TARGETS_10,
57 : BOND_ARP_TARGETS_11,
58 : BOND_ARP_TARGETS_12,
59 : BOND_ARP_TARGETS_13,
60 : BOND_ARP_TARGETS_14,
61 : BOND_ARP_TARGETS_MAX = BOND_MAX_ARP_TARGETS,
62 : } BondArpTargets;
63 :
64 : struct NLType {
65 : uint16_t type;
66 : size_t size;
67 : const NLTypeSystem *type_system;
68 : const NLTypeSystemUnion *type_system_union;
69 : };
70 :
71 : struct NLTypeSystem {
72 : uint16_t count;
73 : const NLType *types;
74 : };
75 :
76 : static const NLTypeSystem rtnl_link_type_system;
77 :
78 : static const NLType empty_types[1] = {
79 : /* fake array to avoid .types==NULL, which denotes invalid type-systems */
80 : };
81 :
82 : static const NLTypeSystem empty_type_system = {
83 : .count = 0,
84 : .types = empty_types,
85 : };
86 :
87 : static const NLType rtnl_link_info_data_veth_types[VETH_INFO_MAX + 1] = {
88 : [VETH_INFO_PEER] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
89 : };
90 :
91 : static const NLType rtnl_link_info_data_ipvlan_types[IFLA_IPVLAN_MAX + 1] = {
92 : [IFLA_IPVLAN_MODE] = { .type = NETLINK_TYPE_U16 },
93 : };
94 :
95 : static const NLType rtnl_link_info_data_macvlan_types[IFLA_MACVLAN_MAX + 1] = {
96 : [IFLA_MACVLAN_MODE] = { .type = NETLINK_TYPE_U32 },
97 : [IFLA_MACVLAN_FLAGS] = { .type = NETLINK_TYPE_U16 },
98 : };
99 :
100 : static const NLType rtnl_link_info_data_bridge_types[IFLA_BRIDGE_MAX + 1] = {
101 : [IFLA_BRIDGE_FLAGS] = { .type = NETLINK_TYPE_U16 },
102 : [IFLA_BRIDGE_MODE] = { .type = NETLINK_TYPE_U16 },
103 : /*
104 : [IFLA_BRIDGE_VLAN_INFO] = { .type = NETLINK_TYPE_BINARY,
105 : .len = sizeof(struct bridge_vlan_info), },
106 : */
107 : };
108 :
109 : static const NLType rtnl_link_info_data_vlan_types[IFLA_VLAN_MAX + 1] = {
110 : [IFLA_VLAN_ID] = { .type = NETLINK_TYPE_U16 },
111 : /*
112 : [IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) },
113 : [IFLA_VLAN_EGRESS_QOS] = { .type = NETLINK_TYPE_NESTED },
114 : [IFLA_VLAN_INGRESS_QOS] = { .type = NETLINK_TYPE_NESTED },
115 : */
116 : [IFLA_VLAN_PROTOCOL] = { .type = NETLINK_TYPE_U16 },
117 : };
118 :
119 : static const NLType rtnl_link_info_data_vxlan_types[IFLA_VXLAN_MAX+1] = {
120 : [IFLA_VXLAN_ID] = { .type = NETLINK_TYPE_U32 },
121 : [IFLA_VXLAN_GROUP] = { .type = NETLINK_TYPE_IN_ADDR },
122 : [IFLA_VXLAN_LINK] = { .type = NETLINK_TYPE_U32 },
123 : [IFLA_VXLAN_LOCAL] = { .type = NETLINK_TYPE_U32},
124 : [IFLA_VXLAN_TTL] = { .type = NETLINK_TYPE_U8 },
125 : [IFLA_VXLAN_TOS] = { .type = NETLINK_TYPE_U8 },
126 : [IFLA_VXLAN_LEARNING] = { .type = NETLINK_TYPE_U8 },
127 : [IFLA_VXLAN_AGEING] = { .type = NETLINK_TYPE_U32 },
128 : [IFLA_VXLAN_LIMIT] = { .type = NETLINK_TYPE_U32 },
129 : [IFLA_VXLAN_PORT_RANGE] = { .type = NETLINK_TYPE_U32},
130 : [IFLA_VXLAN_PROXY] = { .type = NETLINK_TYPE_U8 },
131 : [IFLA_VXLAN_RSC] = { .type = NETLINK_TYPE_U8 },
132 : [IFLA_VXLAN_L2MISS] = { .type = NETLINK_TYPE_U8 },
133 : [IFLA_VXLAN_L3MISS] = { .type = NETLINK_TYPE_U8 },
134 : };
135 :
136 : static const NLType rtnl_bond_arp_target_types[BOND_ARP_TARGETS_MAX + 1] = {
137 : [BOND_ARP_TARGETS_0] = { .type = NETLINK_TYPE_U32 },
138 : [BOND_ARP_TARGETS_1] = { .type = NETLINK_TYPE_U32 },
139 : [BOND_ARP_TARGETS_2] = { .type = NETLINK_TYPE_U32 },
140 : [BOND_ARP_TARGETS_3] = { .type = NETLINK_TYPE_U32 },
141 : [BOND_ARP_TARGETS_4] = { .type = NETLINK_TYPE_U32 },
142 : [BOND_ARP_TARGETS_5] = { .type = NETLINK_TYPE_U32 },
143 : [BOND_ARP_TARGETS_6] = { .type = NETLINK_TYPE_U32 },
144 : [BOND_ARP_TARGETS_7] = { .type = NETLINK_TYPE_U32 },
145 : [BOND_ARP_TARGETS_8] = { .type = NETLINK_TYPE_U32 },
146 : [BOND_ARP_TARGETS_9] = { .type = NETLINK_TYPE_U32 },
147 : [BOND_ARP_TARGETS_10] = { .type = NETLINK_TYPE_U32 },
148 : [BOND_ARP_TARGETS_11] = { .type = NETLINK_TYPE_U32 },
149 : [BOND_ARP_TARGETS_12] = { .type = NETLINK_TYPE_U32 },
150 : [BOND_ARP_TARGETS_13] = { .type = NETLINK_TYPE_U32 },
151 : [BOND_ARP_TARGETS_14] = { .type = NETLINK_TYPE_U32 },
152 : [BOND_ARP_TARGETS_MAX] = { .type = NETLINK_TYPE_U32 },
153 : };
154 :
155 : static const NLTypeSystem rtnl_bond_arp_type_system = {
156 : .count = ELEMENTSOF(rtnl_bond_arp_target_types),
157 : .types = rtnl_bond_arp_target_types,
158 : };
159 :
160 : static const NLType rtnl_link_info_data_bond_types[IFLA_BOND_MAX + 1] = {
161 : [IFLA_BOND_MODE] = { .type = NETLINK_TYPE_U8 },
162 : [IFLA_BOND_ACTIVE_SLAVE] = { .type = NETLINK_TYPE_U32 },
163 : [IFLA_BOND_MIIMON] = { .type = NETLINK_TYPE_U32 },
164 : [IFLA_BOND_UPDELAY] = { .type = NETLINK_TYPE_U32 },
165 : [IFLA_BOND_DOWNDELAY] = { .type = NETLINK_TYPE_U32 },
166 : [IFLA_BOND_USE_CARRIER] = { .type = NETLINK_TYPE_U8 },
167 : [IFLA_BOND_ARP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
168 : [IFLA_BOND_ARP_IP_TARGET] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_bond_arp_type_system },
169 : [IFLA_BOND_ARP_VALIDATE] = { .type = NETLINK_TYPE_U32 },
170 : [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NETLINK_TYPE_U32 },
171 : [IFLA_BOND_PRIMARY] = { .type = NETLINK_TYPE_U32 },
172 : [IFLA_BOND_PRIMARY_RESELECT] = { .type = NETLINK_TYPE_U8 },
173 : [IFLA_BOND_FAIL_OVER_MAC] = { .type = NETLINK_TYPE_U8 },
174 : [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NETLINK_TYPE_U8 },
175 : [IFLA_BOND_RESEND_IGMP] = { .type = NETLINK_TYPE_U32 },
176 : [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NETLINK_TYPE_U8 },
177 : [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NETLINK_TYPE_U8 },
178 : [IFLA_BOND_MIN_LINKS] = { .type = NETLINK_TYPE_U32 },
179 : [IFLA_BOND_LP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
180 : [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NETLINK_TYPE_U32 },
181 : [IFLA_BOND_AD_LACP_RATE] = { .type = NETLINK_TYPE_U8 },
182 : [IFLA_BOND_AD_SELECT] = { .type = NETLINK_TYPE_U8 },
183 : [IFLA_BOND_AD_INFO] = { .type = NETLINK_TYPE_NESTED },
184 : };
185 :
186 : static const NLType rtnl_link_info_data_iptun_types[IFLA_IPTUN_MAX + 1] = {
187 : [IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 },
188 : [IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
189 : [IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
190 : [IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 },
191 : [IFLA_IPTUN_TOS] = { .type = NETLINK_TYPE_U8 },
192 : [IFLA_IPTUN_PMTUDISC] = { .type = NETLINK_TYPE_U8 },
193 : [IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U16 },
194 : [IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 },
195 : [IFLA_IPTUN_6RD_PREFIX] = { .type = NETLINK_TYPE_IN_ADDR },
196 : [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NETLINK_TYPE_U32 },
197 : [IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NETLINK_TYPE_U16 },
198 : [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NETLINK_TYPE_U16 },
199 : [IFLA_IPTUN_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
200 : [IFLA_IPTUN_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 },
201 : [IFLA_IPTUN_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 },
202 : [IFLA_IPTUN_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 },
203 : };
204 :
205 : static const NLType rtnl_link_info_data_ipgre_types[IFLA_GRE_MAX + 1] = {
206 : [IFLA_GRE_LINK] = { .type = NETLINK_TYPE_U32 },
207 : [IFLA_GRE_IFLAGS] = { .type = NETLINK_TYPE_U16 },
208 : [IFLA_GRE_OFLAGS] = { .type = NETLINK_TYPE_U16 },
209 : [IFLA_GRE_IKEY] = { .type = NETLINK_TYPE_U32 },
210 : [IFLA_GRE_OKEY] = { .type = NETLINK_TYPE_U32 },
211 : [IFLA_GRE_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
212 : [IFLA_GRE_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
213 : [IFLA_GRE_TTL] = { .type = NETLINK_TYPE_U8 },
214 : [IFLA_GRE_TOS] = { .type = NETLINK_TYPE_U8 },
215 : [IFLA_GRE_PMTUDISC] = { .type = NETLINK_TYPE_U8 },
216 : [IFLA_GRE_FLOWINFO] = { .type = NETLINK_TYPE_U32 },
217 : [IFLA_GRE_FLAGS] = { .type = NETLINK_TYPE_U32 },
218 : [IFLA_GRE_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
219 : [IFLA_GRE_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 },
220 : [IFLA_GRE_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 },
221 : [IFLA_GRE_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 },
222 : };
223 :
224 : static const NLType rtnl_link_info_data_ipvti_types[IFLA_VTI_MAX + 1] = {
225 : [IFLA_VTI_LINK] = { .type = NETLINK_TYPE_U32 },
226 : [IFLA_VTI_IKEY] = { .type = NETLINK_TYPE_U32 },
227 : [IFLA_VTI_OKEY] = { .type = NETLINK_TYPE_U32 },
228 : [IFLA_VTI_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
229 : [IFLA_VTI_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
230 : };
231 :
232 : static const NLType rtnl_link_info_data_ip6tnl_types[IFLA_IPTUN_MAX + 1] = {
233 : [IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 },
234 : [IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
235 : [IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
236 : [IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 },
237 : [IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U32 },
238 : [IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 },
239 : [IFLA_IPTUN_ENCAP_LIMIT] = { .type = NETLINK_TYPE_U8 },
240 : [IFLA_IPTUN_FLOWINFO] = { .type = NETLINK_TYPE_U32 },
241 : };
242 :
243 : /* these strings must match the .kind entries in the kernel */
244 : static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = {
245 : [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
246 : [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
247 : [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
248 : [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
249 : [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
250 : [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
251 : [NL_UNION_LINK_INFO_DATA_MACVTAP] = "macvtap",
252 : [NL_UNION_LINK_INFO_DATA_IPVLAN] = "ipvlan",
253 : [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
254 : [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
255 : [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
256 : [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = "gretap",
257 : [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = "ip6gre",
258 : [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = "ip6gretap",
259 : [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
260 : [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
261 : [NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = "vti6",
262 : [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = "ip6tnl",
263 : };
264 :
265 42 : DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
266 :
267 : static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = {
268 : [NL_UNION_LINK_INFO_DATA_BOND] = { .count = ELEMENTSOF(rtnl_link_info_data_bond_types),
269 : .types = rtnl_link_info_data_bond_types },
270 : [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .count = ELEMENTSOF(rtnl_link_info_data_bridge_types),
271 : .types = rtnl_link_info_data_bridge_types },
272 : [NL_UNION_LINK_INFO_DATA_VLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vlan_types),
273 : .types = rtnl_link_info_data_vlan_types },
274 : [NL_UNION_LINK_INFO_DATA_VETH] = { .count = ELEMENTSOF(rtnl_link_info_data_veth_types),
275 : .types = rtnl_link_info_data_veth_types },
276 : [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types),
277 : .types = rtnl_link_info_data_macvlan_types },
278 : [NL_UNION_LINK_INFO_DATA_MACVTAP] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types),
279 : .types = rtnl_link_info_data_macvlan_types },
280 : [NL_UNION_LINK_INFO_DATA_IPVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvlan_types),
281 : .types = rtnl_link_info_data_ipvlan_types },
282 : [NL_UNION_LINK_INFO_DATA_VXLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vxlan_types),
283 : .types = rtnl_link_info_data_vxlan_types },
284 : [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types),
285 : .types = rtnl_link_info_data_iptun_types },
286 : [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
287 : .types = rtnl_link_info_data_ipgre_types },
288 : [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
289 : .types = rtnl_link_info_data_ipgre_types },
290 : [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
291 : .types = rtnl_link_info_data_ipgre_types },
292 : [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
293 : .types = rtnl_link_info_data_ipgre_types },
294 : [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types),
295 : .types = rtnl_link_info_data_iptun_types },
296 : [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types),
297 : .types = rtnl_link_info_data_ipvti_types },
298 : [NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types),
299 : .types = rtnl_link_info_data_ipvti_types },
300 : [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ip6tnl_types),
301 : .types = rtnl_link_info_data_ip6tnl_types },
302 :
303 : };
304 :
305 : static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
306 : .num = _NL_UNION_LINK_INFO_DATA_MAX,
307 : .lookup = nl_union_link_info_data_from_string,
308 : .type_systems = rtnl_link_info_data_type_systems,
309 : .match_type = NL_MATCH_SIBLING,
310 : .match = IFLA_INFO_KIND,
311 : };
312 :
313 : static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = {
314 : [IFLA_INFO_KIND] = { .type = NETLINK_TYPE_STRING },
315 : [IFLA_INFO_DATA] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
316 : /*
317 : [IFLA_INFO_XSTATS],
318 : [IFLA_INFO_SLAVE_KIND] = { .type = NETLINK_TYPE_STRING },
319 : [IFLA_INFO_SLAVE_DATA] = { .type = NETLINK_TYPE_NESTED },
320 : */
321 : };
322 :
323 : static const NLTypeSystem rtnl_link_info_type_system = {
324 : .count = ELEMENTSOF(rtnl_link_info_types),
325 : .types = rtnl_link_info_types,
326 : };
327 :
328 : static const struct NLType rtnl_prot_info_bridge_port_types[IFLA_BRPORT_MAX + 1] = {
329 : [IFLA_BRPORT_STATE] = { .type = NETLINK_TYPE_U8 },
330 : [IFLA_BRPORT_COST] = { .type = NETLINK_TYPE_U32 },
331 : [IFLA_BRPORT_PRIORITY] = { .type = NETLINK_TYPE_U16 },
332 : [IFLA_BRPORT_MODE] = { .type = NETLINK_TYPE_U8 },
333 : [IFLA_BRPORT_GUARD] = { .type = NETLINK_TYPE_U8 },
334 : [IFLA_BRPORT_PROTECT] = { .type = NETLINK_TYPE_U8 },
335 : [IFLA_BRPORT_FAST_LEAVE] = { .type = NETLINK_TYPE_U8 },
336 : [IFLA_BRPORT_LEARNING] = { .type = NETLINK_TYPE_U8 },
337 : [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NETLINK_TYPE_U8 },
338 : [IFLA_BRPORT_PROXYARP] = { .type = NETLINK_TYPE_U8 },
339 : [IFLA_BRPORT_LEARNING_SYNC] = { .type = NETLINK_TYPE_U8 },
340 : };
341 :
342 : static const NLTypeSystem rtnl_prot_info_type_systems[AF_MAX] = {
343 : [AF_BRIDGE] = { .count = ELEMENTSOF(rtnl_prot_info_bridge_port_types),
344 : .types = rtnl_prot_info_bridge_port_types },
345 : };
346 :
347 : static const NLTypeSystemUnion rtnl_prot_info_type_system_union = {
348 : .num = AF_MAX,
349 : .type_systems = rtnl_prot_info_type_systems,
350 : .match_type = NL_MATCH_PROTOCOL,
351 : };
352 :
353 : static const struct NLType rtnl_af_spec_inet6_types[IFLA_INET6_MAX + 1] = {
354 : [IFLA_INET6_FLAGS] = { .type = NETLINK_TYPE_U32 },
355 : /*
356 : IFLA_INET6_CONF,
357 : IFLA_INET6_STATS,
358 : IFLA_INET6_MCAST,
359 : IFLA_INET6_CACHEINFO,
360 : IFLA_INET6_ICMP6STATS,
361 : */
362 : [IFLA_INET6_TOKEN] = { .type = NETLINK_TYPE_IN_ADDR },
363 : [IFLA_INET6_ADDR_GEN_MODE] = { .type = NETLINK_TYPE_U8 },
364 : };
365 :
366 : static const NLTypeSystem rtnl_af_spec_inet6_type_system = {
367 : .count = ELEMENTSOF(rtnl_af_spec_inet6_types),
368 : .types = rtnl_af_spec_inet6_types,
369 : };
370 :
371 : static const NLType rtnl_af_spec_types[AF_MAX + 1] = {
372 : [AF_INET6] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_inet6_type_system },
373 : };
374 :
375 : static const NLTypeSystem rtnl_af_spec_type_system = {
376 : .count = ELEMENTSOF(rtnl_af_spec_types),
377 : .types = rtnl_af_spec_types,
378 : };
379 :
380 : static const NLType rtnl_link_types[IFLA_MAX + 1 ] = {
381 : [IFLA_ADDRESS] = { .type = NETLINK_TYPE_ETHER_ADDR },
382 : [IFLA_BROADCAST] = { .type = NETLINK_TYPE_ETHER_ADDR },
383 : [IFLA_IFNAME] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
384 : [IFLA_MTU] = { .type = NETLINK_TYPE_U32 },
385 : [IFLA_LINK] = { .type = NETLINK_TYPE_U32 },
386 : /*
387 : [IFLA_QDISC],
388 : [IFLA_STATS],
389 : [IFLA_COST],
390 : [IFLA_PRIORITY],
391 : */
392 : [IFLA_MASTER] = { .type = NETLINK_TYPE_U32 },
393 : /*
394 : [IFLA_WIRELESS],
395 : */
396 : [IFLA_PROTINFO] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_prot_info_type_system_union },
397 : [IFLA_TXQLEN] = { .type = NETLINK_TYPE_U32 },
398 : /*
399 : [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
400 : */
401 : [IFLA_WEIGHT] = { .type = NETLINK_TYPE_U32 },
402 : [IFLA_OPERSTATE] = { .type = NETLINK_TYPE_U8 },
403 : [IFLA_LINKMODE] = { .type = NETLINK_TYPE_U8 },
404 : [IFLA_LINKINFO] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_info_type_system },
405 : [IFLA_NET_NS_PID] = { .type = NETLINK_TYPE_U32 },
406 : [IFLA_IFALIAS] = { .type = NETLINK_TYPE_STRING, .size = IFALIASZ - 1 },
407 : /*
408 : [IFLA_NUM_VF],
409 : [IFLA_VFINFO_LIST] = {. type = NETLINK_TYPE_NESTED, },
410 : [IFLA_STATS64],
411 : [IFLA_VF_PORTS] = { .type = NETLINK_TYPE_NESTED },
412 : [IFLA_PORT_SELF] = { .type = NETLINK_TYPE_NESTED },
413 : */
414 : [IFLA_AF_SPEC] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_type_system },
415 : /*
416 : [IFLA_VF_PORTS],
417 : [IFLA_PORT_SELF],
418 : [IFLA_AF_SPEC],
419 : */
420 : [IFLA_GROUP] = { .type = NETLINK_TYPE_U32 },
421 : [IFLA_NET_NS_FD] = { .type = NETLINK_TYPE_U32 },
422 : [IFLA_EXT_MASK] = { .type = NETLINK_TYPE_U32 },
423 : [IFLA_PROMISCUITY] = { .type = NETLINK_TYPE_U32 },
424 : [IFLA_NUM_TX_QUEUES] = { .type = NETLINK_TYPE_U32 },
425 : [IFLA_NUM_RX_QUEUES] = { .type = NETLINK_TYPE_U32 },
426 : [IFLA_CARRIER] = { .type = NETLINK_TYPE_U8 },
427 : /*
428 : [IFLA_PHYS_PORT_ID] = { .type = NETLINK_TYPE_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
429 : */
430 : };
431 :
432 : static const NLTypeSystem rtnl_link_type_system = {
433 : .count = ELEMENTSOF(rtnl_link_types),
434 : .types = rtnl_link_types,
435 : };
436 :
437 : /* IFA_FLAGS was defined in kernel 3.14, but we still support older
438 : * kernels where IFA_MAX is lower. */
439 : static const NLType rtnl_address_types[CONST_MAX(IFA_MAX, IFA_FLAGS) + 1] = {
440 : [IFA_ADDRESS] = { .type = NETLINK_TYPE_IN_ADDR },
441 : [IFA_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
442 : [IFA_LABEL] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
443 : [IFA_BROADCAST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
444 : [IFA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
445 : /*
446 : [IFA_ANYCAST],
447 : [IFA_MULTICAST],
448 : */
449 : [IFA_FLAGS] = { .type = NETLINK_TYPE_U32 },
450 : };
451 :
452 : static const NLTypeSystem rtnl_address_type_system = {
453 : .count = ELEMENTSOF(rtnl_address_types),
454 : .types = rtnl_address_types,
455 : };
456 :
457 : static const NLType rtnl_route_types[RTA_MAX + 1] = {
458 : [RTA_DST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
459 : [RTA_SRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
460 : [RTA_IIF] = { .type = NETLINK_TYPE_U32 },
461 : [RTA_OIF] = { .type = NETLINK_TYPE_U32 },
462 : [RTA_GATEWAY] = { .type = NETLINK_TYPE_IN_ADDR },
463 : [RTA_PRIORITY] = { .type = NETLINK_TYPE_U32 },
464 : [RTA_PREFSRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
465 : /*
466 : [RTA_METRICS] = { .type = NETLINK_TYPE_NESTED },
467 : [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
468 : */
469 : [RTA_FLOW] = { .type = NETLINK_TYPE_U32 }, /* 6? */
470 : /*
471 : RTA_CACHEINFO,
472 : RTA_TABLE,
473 : RTA_MARK,
474 : RTA_MFC_STATS,
475 : */
476 : };
477 :
478 : static const NLTypeSystem rtnl_route_type_system = {
479 : .count = ELEMENTSOF(rtnl_route_types),
480 : .types = rtnl_route_types,
481 : };
482 :
483 : static const NLType rtnl_neigh_types[NDA_MAX + 1] = {
484 : [NDA_DST] = { .type = NETLINK_TYPE_IN_ADDR },
485 : [NDA_LLADDR] = { .type = NETLINK_TYPE_ETHER_ADDR },
486 : [NDA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct nda_cacheinfo) },
487 : [NDA_PROBES] = { .type = NETLINK_TYPE_U32 },
488 : [NDA_VLAN] = { .type = NETLINK_TYPE_U16 },
489 : [NDA_PORT] = { .type = NETLINK_TYPE_U16 },
490 : [NDA_VNI] = { .type = NETLINK_TYPE_U32 },
491 : [NDA_IFINDEX] = { .type = NETLINK_TYPE_U32 },
492 : };
493 :
494 : static const NLTypeSystem rtnl_neigh_type_system = {
495 : .count = ELEMENTSOF(rtnl_neigh_types),
496 : .types = rtnl_neigh_types,
497 : };
498 :
499 : static const NLType rtnl_types[RTM_MAX + 1] = {
500 : [NLMSG_DONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = 0 },
501 : [NLMSG_ERROR] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = sizeof(struct nlmsgerr) },
502 : [RTM_NEWLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
503 : [RTM_DELLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
504 : [RTM_GETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
505 : [RTM_SETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
506 : [RTM_NEWADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
507 : [RTM_DELADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
508 : [RTM_GETADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
509 : [RTM_NEWROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
510 : [RTM_DELROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
511 : [RTM_GETROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
512 : [RTM_NEWNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
513 : [RTM_DELNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
514 : [RTM_GETNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
515 : };
516 :
517 : const NLTypeSystem type_system_root = {
518 : .count = ELEMENTSOF(rtnl_types),
519 : .types = rtnl_types,
520 : };
521 :
522 172 : uint16_t type_get_type(const NLType *type) {
523 172 : assert(type);
524 172 : return type->type;
525 : }
526 :
527 133 : size_t type_get_size(const NLType *type) {
528 133 : assert(type);
529 133 : return type->size;
530 : }
531 :
532 78 : void type_get_type_system(const NLType *nl_type, const NLTypeSystem **ret) {
533 78 : assert(nl_type);
534 78 : assert(ret);
535 78 : assert(nl_type->type == NETLINK_TYPE_NESTED);
536 78 : assert(nl_type->type_system);
537 :
538 78 : *ret = nl_type->type_system;
539 78 : }
540 :
541 4 : void type_get_type_system_union(const NLType *nl_type, const NLTypeSystemUnion **ret) {
542 4 : assert(nl_type);
543 4 : assert(ret);
544 4 : assert(nl_type->type == NETLINK_TYPE_UNION);
545 4 : assert(nl_type->type_system_union);
546 :
547 4 : *ret = nl_type->type_system_union;
548 4 : }
549 :
550 59 : uint16_t type_system_get_count(const NLTypeSystem *type_system) {
551 59 : assert(type_system);
552 59 : return type_system->count;
553 : }
554 :
555 230 : int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
556 : const NLType *nl_type;
557 :
558 230 : assert(ret);
559 230 : assert(type_system);
560 230 : assert(type_system->types);
561 :
562 230 : if (type >= type_system->count)
563 0 : return -EOPNOTSUPP;
564 :
565 230 : nl_type = &type_system->types[type];
566 :
567 230 : if (nl_type->type == NETLINK_TYPE_UNSPEC)
568 0 : return -EOPNOTSUPP;
569 :
570 230 : *ret = nl_type;
571 :
572 230 : return 0;
573 : }
574 :
575 2 : int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
576 : const NLType *nl_type;
577 : int r;
578 :
579 2 : assert(ret);
580 :
581 2 : r = type_system_get_type(type_system, &nl_type, type);
582 2 : if (r < 0)
583 0 : return r;
584 :
585 2 : type_get_type_system(nl_type, ret);
586 2 : return 0;
587 : }
588 :
589 4 : int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
590 : const NLType *nl_type;
591 : int r;
592 :
593 4 : assert(ret);
594 :
595 4 : r = type_system_get_type(type_system, &nl_type, type);
596 4 : if (r < 0)
597 0 : return r;
598 :
599 4 : type_get_type_system_union(nl_type, ret);
600 4 : return 0;
601 : }
602 :
603 2 : int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
604 : int type;
605 :
606 2 : assert(type_system_union);
607 2 : assert(type_system_union->match_type == NL_MATCH_SIBLING);
608 2 : assert(type_system_union->lookup);
609 2 : assert(type_system_union->type_systems);
610 2 : assert(ret);
611 2 : assert(key);
612 :
613 2 : type = type_system_union->lookup(key);
614 2 : if (type < 0)
615 0 : return -EOPNOTSUPP;
616 :
617 2 : assert(type < type_system_union->num);
618 :
619 2 : *ret = &type_system_union->type_systems[type];
620 :
621 2 : return 0;
622 : }
623 :
624 2 : int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
625 : const NLTypeSystem *type_system;
626 :
627 2 : assert(type_system_union);
628 2 : assert(type_system_union->type_systems);
629 2 : assert(type_system_union->match_type == NL_MATCH_PROTOCOL);
630 2 : assert(ret);
631 :
632 2 : if (protocol >= type_system_union->num)
633 0 : return -EOPNOTSUPP;
634 :
635 2 : type_system = &type_system_union->type_systems[protocol];
636 2 : if (!type_system->types)
637 0 : return -EOPNOTSUPP;
638 :
639 2 : *ret = type_system;
640 :
641 2 : return 0;
642 : }
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