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 #ifdef IFLA_BOND_MIIMON
94 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },
95 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
96 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
97 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
98 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
100 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
102 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
103 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
104 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
105 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
106 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
107 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
108 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
109 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
110 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
111 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
112 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
113 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
114 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
115 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
117 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
122 static const NLType rtnl_link_info_data_iptun_types[IFLA_IPTUN_MAX + 1] = {
123 [IFLA_IPTUN_LINK] = { .type = NLA_U32 },
124 [IFLA_IPTUN_LOCAL] = { .type = NLA_IN_ADDR },
125 [IFLA_IPTUN_REMOTE] = { .type = NLA_IN_ADDR },
126 [IFLA_IPTUN_TTL] = { .type = NLA_U8 },
127 [IFLA_IPTUN_TOS] = { .type = NLA_U8 },
128 [IFLA_IPTUN_PMTUDISC] = { .type = NLA_U8 },
129 [IFLA_IPTUN_FLAGS] = { .type = NLA_U16 },
130 [IFLA_IPTUN_PROTO] = { .type = NLA_U8 },
131 [IFLA_IPTUN_6RD_PREFIX] = { .type = NLA_IN_ADDR },
132 [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NLA_U32 },
133 [IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NLA_U16 },
134 [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NLA_U16 },
137 static const NLType rtnl_link_info_data_ipgre_types[IFLA_GRE_MAX + 1] = {
138 [IFLA_GRE_LINK] = { .type = NLA_U32 },
139 [IFLA_GRE_IFLAGS] = { .type = NLA_U16 },
140 [IFLA_GRE_OFLAGS] = { .type = NLA_U16 },
141 [IFLA_GRE_IKEY] = { .type = NLA_U32 },
142 [IFLA_GRE_OKEY] = { .type = NLA_U32 },
143 [IFLA_GRE_LOCAL] = { .type = NLA_IN_ADDR },
144 [IFLA_GRE_REMOTE] = { .type = NLA_IN_ADDR },
145 [IFLA_GRE_TTL] = { .type = NLA_U8 },
146 [IFLA_GRE_TOS] = { .type = NLA_U8 },
147 [IFLA_GRE_PMTUDISC] = { .type = NLA_U8 },
150 static const NLType rtnl_link_info_data_ipvti_types[IFLA_VTI_MAX + 1] = {
151 [IFLA_VTI_LINK] = { .type = NLA_U32 },
152 [IFLA_VTI_IKEY] = { .type = NLA_U32 },
153 [IFLA_VTI_OKEY] = { .type = NLA_U32 },
154 [IFLA_VTI_LOCAL] = { .type = NLA_IN_ADDR },
155 [IFLA_VTI_REMOTE] = { .type = NLA_IN_ADDR },
158 typedef enum NLUnionLinkInfoData {
159 NL_UNION_LINK_INFO_DATA_BOND,
160 NL_UNION_LINK_INFO_DATA_BRIDGE,
161 NL_UNION_LINK_INFO_DATA_VLAN,
162 NL_UNION_LINK_INFO_DATA_VETH,
163 NL_UNION_LINK_INFO_DATA_DUMMY,
164 NL_UNION_LINK_INFO_DATA_MACVLAN,
165 NL_UNION_LINK_INFO_DATA_VXLAN,
166 NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL,
167 NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL,
168 NL_UNION_LINK_INFO_DATA_SIT_TUNNEL,
169 NL_UNION_LINK_INFO_DATA_VTI_TUNNEL,
170 _NL_UNION_LINK_INFO_DATA_MAX,
171 _NL_UNION_LINK_INFO_DATA_INVALID = -1
172 } NLUnionLinkInfoData;
174 const char *nl_union_link_info_data_to_string(NLUnionLinkInfoData p) _const_;
175 NLUnionLinkInfoData nl_union_link_info_data_from_string(const char *p) _pure_;
177 /* these strings must match the .kind entries in the kernel */
178 static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = {
179 [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
180 [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
181 [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
182 [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
183 [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
184 [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
185 [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
186 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
187 [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
188 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
189 [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
192 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
194 static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = {
195 [NL_UNION_LINK_INFO_DATA_BOND] = { .max = ELEMENTSOF(rtnl_link_info_data_bond_types) - 1,
196 .types = rtnl_link_info_data_bond_types },
197 [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .max = ELEMENTSOF(rtnl_link_info_data_bridge_types) - 1,
198 .types = rtnl_link_info_data_bridge_types },
199 [NL_UNION_LINK_INFO_DATA_VLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vlan_types) - 1,
200 .types = rtnl_link_info_data_vlan_types },
201 [NL_UNION_LINK_INFO_DATA_VETH] = { .max = ELEMENTSOF(rtnl_link_info_data_veth_types) - 1,
202 .types = rtnl_link_info_data_veth_types },
203 [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_macvlan_types) - 1,
204 .types = rtnl_link_info_data_macvlan_types },
205 [NL_UNION_LINK_INFO_DATA_VXLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vxlan_types) - 1,
206 .types = rtnl_link_info_data_vxlan_types },
207 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
208 .types = rtnl_link_info_data_iptun_types },
209 [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
210 .types = rtnl_link_info_data_ipgre_types },
211 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
212 .types = rtnl_link_info_data_iptun_types },
213 [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_ipvti_types) - 1,
214 .types = rtnl_link_info_data_ipvti_types },
217 static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
218 .num = _NL_UNION_LINK_INFO_DATA_MAX,
219 .lookup = nl_union_link_info_data_from_string,
220 .type_systems = rtnl_link_info_data_type_systems,
221 .match = IFLA_INFO_KIND,
224 static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = {
225 [IFLA_INFO_KIND] = { .type = NLA_STRING },
226 [IFLA_INFO_DATA] = { .type = NLA_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
229 [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING },
230 [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED },
234 static const NLTypeSystem rtnl_link_info_type_system = {
235 .max = ELEMENTSOF(rtnl_link_info_types) - 1,
236 .types = rtnl_link_info_types,
239 static const NLType rtnl_link_types[IFLA_MAX + 1] = {
240 [IFLA_ADDRESS] = { .type = NLA_ETHER_ADDR, },
241 [IFLA_BROADCAST] = { .type = NLA_ETHER_ADDR, },
242 [IFLA_IFNAME] = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
243 [IFLA_MTU] = { .type = NLA_U32 },
244 [IFLA_LINK] = { .type = NLA_U32 },
251 [IFLA_MASTER] = { .type = NLA_U32 },
256 [IFLA_TXQLEN] = { .type = NLA_U32 },
258 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
260 [IFLA_WEIGHT] = { .type = NLA_U32 },
261 [IFLA_OPERSTATE] = { .type = NLA_U8 },
262 [IFLA_LINKMODE] = { .type = NLA_U8 },
263 [IFLA_LINKINFO] = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
264 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
265 [IFLA_IFALIAS] = { .type = NLA_STRING, .size = IFALIASZ - 1 },
268 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED, },
270 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
271 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
272 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
277 [IFLA_GROUP] = { .type = NLA_U32 },
278 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
279 [IFLA_EXT_MASK] = { .type = NLA_U32 },
280 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
281 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
282 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
283 [IFLA_CARRIER] = { .type = NLA_U8 },
285 [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
289 static const NLTypeSystem rtnl_link_type_system = {
290 .max = ELEMENTSOF(rtnl_link_types) - 1,
291 .types = rtnl_link_types,
294 static const NLType rtnl_address_types[IFA_MAX + 1] = {
295 [IFA_ADDRESS] = { .type = NLA_IN_ADDR },
296 [IFA_LOCAL] = { .type = NLA_IN_ADDR },
297 [IFA_LABEL] = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
298 [IFA_BROADCAST] = { .type = NLA_IN_ADDR }, /* 6? */
299 [IFA_CACHEINFO] = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
305 [IFA_FLAGS] = { .type = NLA_U32 },
309 static const NLTypeSystem rtnl_address_type_system = {
310 .max = ELEMENTSOF(rtnl_address_types) - 1,
311 .types = rtnl_address_types,
314 static const NLType rtnl_route_types[RTA_MAX + 1] = {
315 [RTA_DST] = { .type = NLA_IN_ADDR }, /* 6? */
316 [RTA_SRC] = { .type = NLA_IN_ADDR }, /* 6? */
317 [RTA_IIF] = { .type = NLA_U32 },
318 [RTA_OIF] = { .type = NLA_U32 },
319 [RTA_GATEWAY] = { .type = NLA_IN_ADDR },
320 [RTA_PRIORITY] = { .type = NLA_U32 },
321 [RTA_PREFSRC] = { .type = NLA_IN_ADDR }, /* 6? */
323 [RTA_METRICS] = { .type = NLA_NESTED },
324 [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
326 [RTA_FLOW] = { .type = NLA_U32 }, /* 6? */
335 static const NLTypeSystem rtnl_route_type_system = {
336 .max = ELEMENTSOF(rtnl_route_types) - 1,
337 .types = rtnl_route_types,
340 static const NLType rtnl_types[RTM_MAX + 1] = {
341 [NLMSG_ERROR] = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
342 [RTM_NEWLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
343 [RTM_DELLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
344 [RTM_GETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
345 [RTM_SETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
346 [RTM_NEWADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
347 [RTM_DELADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
348 [RTM_GETADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
349 [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
350 [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
351 [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
354 const NLTypeSystem rtnl_type_system = {
355 .max = ELEMENTSOF(rtnl_types) - 1,
359 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
360 const NLType *nl_type;
365 type_system = &rtnl_type_system;
367 assert(type_system->types);
369 if (type > type_system->max)
372 nl_type = &type_system->types[type];
374 if (nl_type->type == NLA_UNSPEC)
382 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
383 const NLType *nl_type;
388 r = type_system_get_type(type_system, &nl_type, type);
392 assert_return(nl_type->type == NLA_NESTED, -EINVAL);
394 assert(nl_type->type_system);
396 *ret = nl_type->type_system;
401 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
402 const NLType *nl_type;
407 r = type_system_get_type(type_system, &nl_type, type);
411 assert_return(nl_type->type == NLA_UNION, -EINVAL);
413 assert(nl_type->type_system_union);
415 *ret = nl_type->type_system_union;
420 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
423 assert(type_system_union);
424 assert(type_system_union->lookup);
425 assert(type_system_union->type_systems);
429 type = type_system_union->lookup(key);
433 assert(type < type_system_union->num);
435 *ret = &type_system_union->type_systems[type];