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 NLType rtnl_link_types[IFLA_MAX + 1] = {
215 [IFLA_ADDRESS] = { .type = NLA_ETHER_ADDR, },
216 [IFLA_BROADCAST] = { .type = NLA_ETHER_ADDR, },
217 [IFLA_IFNAME] = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
218 [IFLA_MTU] = { .type = NLA_U32 },
219 [IFLA_LINK] = { .type = NLA_U32 },
226 [IFLA_MASTER] = { .type = NLA_U32 },
231 [IFLA_TXQLEN] = { .type = NLA_U32 },
233 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
235 [IFLA_WEIGHT] = { .type = NLA_U32 },
236 [IFLA_OPERSTATE] = { .type = NLA_U8 },
237 [IFLA_LINKMODE] = { .type = NLA_U8 },
238 [IFLA_LINKINFO] = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
239 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
240 [IFLA_IFALIAS] = { .type = NLA_STRING, .size = IFALIASZ - 1 },
243 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED, },
245 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
246 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
247 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
252 [IFLA_GROUP] = { .type = NLA_U32 },
253 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
254 [IFLA_EXT_MASK] = { .type = NLA_U32 },
255 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
256 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
257 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
258 [IFLA_CARRIER] = { .type = NLA_U8 },
260 [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
264 static const NLTypeSystem rtnl_link_type_system = {
265 .max = ELEMENTSOF(rtnl_link_types) - 1,
266 .types = rtnl_link_types,
269 static const NLType rtnl_address_types[IFA_MAX + 1] = {
270 [IFA_ADDRESS] = { .type = NLA_IN_ADDR },
271 [IFA_LOCAL] = { .type = NLA_IN_ADDR },
272 [IFA_LABEL] = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
273 [IFA_BROADCAST] = { .type = NLA_IN_ADDR }, /* 6? */
274 [IFA_CACHEINFO] = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
280 [IFA_FLAGS] = { .type = NLA_U32 },
284 static const NLTypeSystem rtnl_address_type_system = {
285 .max = ELEMENTSOF(rtnl_address_types) - 1,
286 .types = rtnl_address_types,
289 static const NLType rtnl_route_types[RTA_MAX + 1] = {
290 [RTA_DST] = { .type = NLA_IN_ADDR }, /* 6? */
291 [RTA_SRC] = { .type = NLA_IN_ADDR }, /* 6? */
292 [RTA_IIF] = { .type = NLA_U32 },
293 [RTA_OIF] = { .type = NLA_U32 },
294 [RTA_GATEWAY] = { .type = NLA_IN_ADDR },
295 [RTA_PRIORITY] = { .type = NLA_U32 },
296 [RTA_PREFSRC] = { .type = NLA_IN_ADDR }, /* 6? */
298 [RTA_METRICS] = { .type = NLA_NESTED },
299 [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
301 [RTA_FLOW] = { .type = NLA_U32 }, /* 6? */
310 static const NLTypeSystem rtnl_route_type_system = {
311 .max = ELEMENTSOF(rtnl_route_types) - 1,
312 .types = rtnl_route_types,
315 static const NLType rtnl_types[RTM_MAX + 1] = {
316 [NLMSG_ERROR] = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
317 [RTM_NEWLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
318 [RTM_DELLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
319 [RTM_GETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
320 [RTM_SETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
321 [RTM_NEWADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
322 [RTM_DELADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
323 [RTM_GETADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
324 [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
325 [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
326 [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
329 const NLTypeSystem rtnl_type_system = {
330 .max = ELEMENTSOF(rtnl_types) - 1,
334 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
335 const NLType *nl_type;
340 type_system = &rtnl_type_system;
342 assert(type_system->types);
344 if (type > type_system->max)
347 nl_type = &type_system->types[type];
349 if (nl_type->type == NLA_UNSPEC)
357 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
358 const NLType *nl_type;
363 r = type_system_get_type(type_system, &nl_type, type);
367 assert_return(nl_type->type == NLA_NESTED, -EINVAL);
369 assert(nl_type->type_system);
371 *ret = nl_type->type_system;
376 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
377 const NLType *nl_type;
382 r = type_system_get_type(type_system, &nl_type, type);
386 assert_return(nl_type->type == NLA_UNION, -EINVAL);
388 assert(nl_type->type_system_union);
390 *ret = nl_type->type_system_union;
395 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
398 assert(type_system_union);
399 assert(type_system_union->lookup);
400 assert(type_system_union->type_systems);
404 type = type_system_union->lookup(key);
408 assert(type < type_system_union->num);
410 *ret = &type_system_union->type_systems[type];