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 /* these strings must match the .kind entries in the kernel */
159 static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = {
160 [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
161 [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
162 [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
163 [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
164 [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
165 [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
166 [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
167 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
168 [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
169 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
170 [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
173 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
175 static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = {
176 [NL_UNION_LINK_INFO_DATA_BOND] = { .max = ELEMENTSOF(rtnl_link_info_data_bond_types) - 1,
177 .types = rtnl_link_info_data_bond_types },
178 [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .max = ELEMENTSOF(rtnl_link_info_data_bridge_types) - 1,
179 .types = rtnl_link_info_data_bridge_types },
180 [NL_UNION_LINK_INFO_DATA_VLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vlan_types) - 1,
181 .types = rtnl_link_info_data_vlan_types },
182 [NL_UNION_LINK_INFO_DATA_VETH] = { .max = ELEMENTSOF(rtnl_link_info_data_veth_types) - 1,
183 .types = rtnl_link_info_data_veth_types },
184 [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_macvlan_types) - 1,
185 .types = rtnl_link_info_data_macvlan_types },
186 [NL_UNION_LINK_INFO_DATA_VXLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vxlan_types) - 1,
187 .types = rtnl_link_info_data_vxlan_types },
188 [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
189 .types = rtnl_link_info_data_iptun_types },
190 [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
191 .types = rtnl_link_info_data_ipgre_types },
192 [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
193 .types = rtnl_link_info_data_iptun_types },
194 [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_ipvti_types) - 1,
195 .types = rtnl_link_info_data_ipvti_types },
198 static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
199 .num = _NL_UNION_LINK_INFO_DATA_MAX,
200 .lookup = nl_union_link_info_data_from_string,
201 .type_systems = rtnl_link_info_data_type_systems,
202 .match = IFLA_INFO_KIND,
205 static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = {
206 [IFLA_INFO_KIND] = { .type = NLA_STRING },
207 [IFLA_INFO_DATA] = { .type = NLA_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
210 [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING },
211 [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED },
215 static const NLTypeSystem rtnl_link_info_type_system = {
216 .max = ELEMENTSOF(rtnl_link_info_types) - 1,
217 .types = rtnl_link_info_types,
220 static const NLType rtnl_link_types[IFLA_MAX + 1] = {
221 [IFLA_ADDRESS] = { .type = NLA_ETHER_ADDR, },
222 [IFLA_BROADCAST] = { .type = NLA_ETHER_ADDR, },
223 [IFLA_IFNAME] = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
224 [IFLA_MTU] = { .type = NLA_U32 },
225 [IFLA_LINK] = { .type = NLA_U32 },
232 [IFLA_MASTER] = { .type = NLA_U32 },
237 [IFLA_TXQLEN] = { .type = NLA_U32 },
239 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
241 [IFLA_WEIGHT] = { .type = NLA_U32 },
242 [IFLA_OPERSTATE] = { .type = NLA_U8 },
243 [IFLA_LINKMODE] = { .type = NLA_U8 },
244 [IFLA_LINKINFO] = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
245 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
246 [IFLA_IFALIAS] = { .type = NLA_STRING, .size = IFALIASZ - 1 },
249 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED, },
251 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
252 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
253 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
258 [IFLA_GROUP] = { .type = NLA_U32 },
259 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
260 [IFLA_EXT_MASK] = { .type = NLA_U32 },
261 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
262 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
263 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
264 [IFLA_CARRIER] = { .type = NLA_U8 },
266 [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
270 static const NLTypeSystem rtnl_link_type_system = {
271 .max = ELEMENTSOF(rtnl_link_types) - 1,
272 .types = rtnl_link_types,
275 static const NLType rtnl_address_types[IFA_MAX + 1] = {
276 [IFA_ADDRESS] = { .type = NLA_IN_ADDR },
277 [IFA_LOCAL] = { .type = NLA_IN_ADDR },
278 [IFA_LABEL] = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
279 [IFA_BROADCAST] = { .type = NLA_IN_ADDR }, /* 6? */
280 [IFA_CACHEINFO] = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
286 [IFA_FLAGS] = { .type = NLA_U32 },
290 static const NLTypeSystem rtnl_address_type_system = {
291 .max = ELEMENTSOF(rtnl_address_types) - 1,
292 .types = rtnl_address_types,
295 static const NLType rtnl_route_types[RTA_MAX + 1] = {
296 [RTA_DST] = { .type = NLA_IN_ADDR }, /* 6? */
297 [RTA_SRC] = { .type = NLA_IN_ADDR }, /* 6? */
298 [RTA_IIF] = { .type = NLA_U32 },
299 [RTA_OIF] = { .type = NLA_U32 },
300 [RTA_GATEWAY] = { .type = NLA_IN_ADDR },
301 [RTA_PRIORITY] = { .type = NLA_U32 },
302 [RTA_PREFSRC] = { .type = NLA_IN_ADDR }, /* 6? */
304 [RTA_METRICS] = { .type = NLA_NESTED },
305 [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
307 [RTA_FLOW] = { .type = NLA_U32 }, /* 6? */
316 static const NLTypeSystem rtnl_route_type_system = {
317 .max = ELEMENTSOF(rtnl_route_types) - 1,
318 .types = rtnl_route_types,
321 static const NLType rtnl_types[RTM_MAX + 1] = {
322 [NLMSG_ERROR] = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
323 [RTM_NEWLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
324 [RTM_DELLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
325 [RTM_GETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
326 [RTM_SETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
327 [RTM_NEWADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
328 [RTM_DELADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
329 [RTM_GETADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
330 [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
331 [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
332 [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
335 const NLTypeSystem rtnl_type_system = {
336 .max = ELEMENTSOF(rtnl_types) - 1,
340 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
341 const NLType *nl_type;
346 type_system = &rtnl_type_system;
348 assert(type_system->types);
350 if (type > type_system->max)
353 nl_type = &type_system->types[type];
355 if (nl_type->type == NLA_UNSPEC)
363 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
364 const NLType *nl_type;
369 r = type_system_get_type(type_system, &nl_type, type);
373 assert_return(nl_type->type == NLA_NESTED, -EINVAL);
375 assert(nl_type->type_system);
377 *ret = nl_type->type_system;
382 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **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_UNION, -EINVAL);
394 assert(nl_type->type_system_union);
396 *ret = nl_type->type_system_union;
401 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
404 assert(type_system_union);
405 assert(type_system_union->lookup);
406 assert(type_system_union->type_systems);
410 type = type_system_union->lookup(key);
414 assert(type < type_system_union->num);
416 *ret = &type_system_union->type_systems[type];