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>
36 #include "rtnl-types.h"
38 static const NLTypeSystem rtnl_link_type_system;
40 static const NLType rtnl_link_info_data_veth_types[VETH_INFO_MAX + 1] = {
41 [VETH_INFO_PEER] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
45 static const NLType rtnl_link_info_data_macvlan_types[IFLA_MACVLAN_MAX + 1] = {
46 [IFLA_MACVLAN_MODE] = { .type = NLA_U32 },
47 [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 },
50 static const NLType rtnl_link_info_data_bridge_types[IFLA_BRIDGE_MAX + 1] = {
51 [IFLA_BRIDGE_FLAGS] = { .type = NLA_U16 },
52 [IFLA_BRIDGE_MODE] = { .type = NLA_U16 },
54 [IFLA_BRIDGE_VLAN_INFO] = { .type = NLA_BINARY,
55 .len = sizeof(struct bridge_vlan_info), },
59 static const NLType rtnl_link_info_data_vlan_types[IFLA_VLAN_MAX + 1] = {
60 [IFLA_VLAN_ID] = { .type = NLA_U16 },
62 [IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) },
63 [IFLA_VLAN_EGRESS_QOS] = { .type = NLA_NESTED },
64 [IFLA_VLAN_INGRESS_QOS] = { .type = NLA_NESTED },
66 [IFLA_VLAN_PROTOCOL] = { .type = NLA_U16 },
69 static const NLType rtnl_link_info_data_bond_types[IFLA_BOND_MAX + 1] = {
70 [IFLA_BOND_MODE] = { .type = NLA_U8 },
71 [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
72 #ifdef IFLA_BOND_MIIMON
73 [IFLA_BOND_MIIMON] = { .type = NLA_U32 },
74 [IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
75 [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
76 [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
77 [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
79 [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
81 [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
82 [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
83 [IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
84 [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
85 [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
86 [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
87 [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
88 [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
89 [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
90 [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
91 [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
92 [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
93 [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
94 [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
96 [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
101 typedef enum NLUnionLinkInfoData {
102 NL_UNION_LINK_INFO_DATA_BOND,
103 NL_UNION_LINK_INFO_DATA_BRIDGE,
104 NL_UNION_LINK_INFO_DATA_VLAN,
105 NL_UNION_LINK_INFO_DATA_VETH,
106 NL_UNION_LINK_INFO_DATA_MACVLAN,
107 _NL_UNION_LINK_INFO_DATA_MAX,
108 _NL_UNION_LINK_INFO_DATA_INVALID = -1
109 } NLUnionLinkInfoData;
111 const char *nl_union_link_info_data_to_string(NLUnionLinkInfoData p) _const_;
112 NLUnionLinkInfoData nl_union_link_info_data_from_string(const char *p) _pure_;
114 static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = {
115 [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
116 [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
117 [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
118 [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
119 [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
122 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
124 static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = {
125 [NL_UNION_LINK_INFO_DATA_BOND] = { .max = ELEMENTSOF(rtnl_link_info_data_bond_types) - 1,
126 .types = rtnl_link_info_data_bond_types },
127 [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .max = ELEMENTSOF(rtnl_link_info_data_bridge_types) - 1,
128 .types = rtnl_link_info_data_bridge_types },
129 [NL_UNION_LINK_INFO_DATA_VLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vlan_types) - 1,
130 .types = rtnl_link_info_data_vlan_types },
131 [NL_UNION_LINK_INFO_DATA_VETH] = { .max = ELEMENTSOF(rtnl_link_info_data_veth_types) - 1,
132 .types = rtnl_link_info_data_veth_types },
133 [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_macvlan_types) - 1,
134 .types = rtnl_link_info_data_macvlan_types },
137 static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
138 .num = _NL_UNION_LINK_INFO_DATA_MAX,
139 .lookup = nl_union_link_info_data_from_string,
140 .type_systems = rtnl_link_info_data_type_systems,
141 .match = IFLA_INFO_KIND,
144 static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = {
145 [IFLA_INFO_KIND] = { .type = NLA_STRING },
146 [IFLA_INFO_DATA] = { .type = NLA_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
149 [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING },
150 [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED },
154 static const NLTypeSystem rtnl_link_info_type_system = {
155 .max = ELEMENTSOF(rtnl_link_info_types) - 1,
156 .types = rtnl_link_info_types,
159 static const NLType rtnl_link_types[IFLA_MAX + 1] = {
160 [IFLA_ADDRESS] = { .type = NLA_ETHER_ADDR, },
161 [IFLA_BROADCAST] = { .type = NLA_ETHER_ADDR, },
162 [IFLA_IFNAME] = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
163 [IFLA_MTU] = { .type = NLA_U32 },
164 [IFLA_LINK] = { .type = NLA_U32 },
171 [IFLA_MASTER] = { .type = NLA_U32 },
176 [IFLA_TXQLEN] = { .type = NLA_U32 },
178 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
180 [IFLA_WEIGHT] = { .type = NLA_U32 },
181 [IFLA_OPERSTATE] = { .type = NLA_U8 },
182 [IFLA_LINKMODE] = { .type = NLA_U8 },
183 [IFLA_LINKINFO] = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
184 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
185 [IFLA_IFALIAS] = { .type = NLA_STRING, .size = IFALIASZ - 1 },
188 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED, },
190 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
191 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
192 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
197 [IFLA_GROUP] = { .type = NLA_U32 },
198 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
199 [IFLA_EXT_MASK] = { .type = NLA_U32 },
200 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
201 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
202 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
203 [IFLA_CARRIER] = { .type = NLA_U8 },
205 [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
209 static const NLTypeSystem rtnl_link_type_system = {
210 .max = ELEMENTSOF(rtnl_link_types) - 1,
211 .types = rtnl_link_types,
214 static const NLType rtnl_address_types[IFA_MAX + 1] = {
215 [IFA_ADDRESS] = { .type = NLA_IN_ADDR },
216 [IFA_LOCAL] = { .type = NLA_IN_ADDR },
217 [IFA_LABEL] = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
218 [IFA_BROADCAST] = { .type = NLA_IN_ADDR }, /* 6? */
219 [IFA_CACHEINFO] = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
225 [IFA_FLAGS] = { .type = NLA_U32 },
229 static const NLTypeSystem rtnl_address_type_system = {
230 .max = ELEMENTSOF(rtnl_address_types) - 1,
231 .types = rtnl_address_types,
234 static const NLType rtnl_route_types[RTA_MAX + 1] = {
235 [RTA_DST] = { .type = NLA_IN_ADDR }, /* 6? */
236 [RTA_SRC] = { .type = NLA_IN_ADDR }, /* 6? */
237 [RTA_IIF] = { .type = NLA_U32 },
238 [RTA_OIF] = { .type = NLA_U32 },
239 [RTA_GATEWAY] = { .type = NLA_IN_ADDR },
240 [RTA_PRIORITY] = { .type = NLA_U32 },
241 [RTA_PREFSRC] = { .type = NLA_IN_ADDR }, /* 6? */
243 [RTA_METRICS] = { .type = NLA_NESTED },
244 [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
246 [RTA_FLOW] = { .type = NLA_U32 }, /* 6? */
255 static const NLTypeSystem rtnl_route_type_system = {
256 .max = ELEMENTSOF(rtnl_route_types) - 1,
257 .types = rtnl_route_types,
260 static const NLType rtnl_types[RTM_MAX + 1] = {
261 [NLMSG_ERROR] = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
262 [RTM_NEWLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
263 [RTM_DELLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
264 [RTM_GETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
265 [RTM_SETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
266 [RTM_NEWADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
267 [RTM_DELADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
268 [RTM_GETADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
269 [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
270 [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
271 [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
274 const NLTypeSystem rtnl_type_system = {
275 .max = ELEMENTSOF(rtnl_types) - 1,
279 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
280 const NLType *nl_type;
285 type_system = &rtnl_type_system;
287 assert(type_system->types);
289 if (type > type_system->max)
292 nl_type = &type_system->types[type];
294 if (nl_type->type == NLA_UNSPEC)
302 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
303 const NLType *nl_type;
308 r = type_system_get_type(type_system, &nl_type, type);
312 assert_return(nl_type->type == NLA_NESTED, -EINVAL);
314 assert(nl_type->type_system);
316 *ret = nl_type->type_system;
321 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
322 const NLType *nl_type;
327 r = type_system_get_type(type_system, &nl_type, type);
331 assert_return(nl_type->type == NLA_UNION, -EINVAL);
333 assert(nl_type->type_system_union);
335 *ret = nl_type->type_system_union;
340 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
343 assert(type_system_union);
344 assert(type_system_union->lookup);
345 assert(type_system_union->type_systems);
349 type = type_system_union->lookup(key);
353 assert(type < type_system_union->num);
355 *ret = &type_system_union->type_systems[type];