src/libsystemd/sd-rtnl/rtnl-types.c

   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 "rtnl-types.h"
  40 #include "missing.h"
  41
  42 static const NLTypeSystem rtnl_link_type_system;
  43
  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) },
  46 };
  47
  48 static const NLType rtnl_link_info_data_ipvlan_types[IFLA_IPVLAN_MAX + 1] = {
  49         [IFLA_IPVLAN_MODE]  = { .type = NLA_U16 },
  50 };
  51
  52 static const NLType rtnl_link_info_data_macvlan_types[IFLA_MACVLAN_MAX + 1] = {
  53         [IFLA_MACVLAN_MODE]  = { .type = NLA_U32 },
  54         [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 },
  55 };
  56
  57 static const NLType rtnl_link_info_data_bridge_types[IFLA_BRIDGE_MAX + 1] = {
  58         [IFLA_BRIDGE_FLAGS]     = { .type = NLA_U16 },
  59         [IFLA_BRIDGE_MODE]      = { .type = NLA_U16 },
  60 /*
  61         [IFLA_BRIDGE_VLAN_INFO] = { .type = NLA_BINARY,
  62                                     .len = sizeof(struct bridge_vlan_info), },
  63 */
  64 };
  65
  66 static const NLType rtnl_link_info_data_vlan_types[IFLA_VLAN_MAX + 1] = {
  67         [IFLA_VLAN_ID]          = { .type = NLA_U16 },
  68 /*
  69         [IFLA_VLAN_FLAGS]       = { .len = sizeof(struct ifla_vlan_flags) },
  70         [IFLA_VLAN_EGRESS_QOS]  = { .type = NLA_NESTED },
  71         [IFLA_VLAN_INGRESS_QOS] = { .type = NLA_NESTED },
  72 */
  73         [IFLA_VLAN_PROTOCOL]    = { .type = NLA_U16 },
  74 };
  75
  76 static const NLType rtnl_link_info_data_vxlan_types[IFLA_VXLAN_MAX+1] = {
  77         [IFLA_VXLAN_ID] = { .type = NLA_U32 },
  78         [IFLA_VXLAN_GROUP] = {.type = NLA_IN_ADDR },
  79         [IFLA_VXLAN_LINK] = { .type = NLA_U32 },
  80         [IFLA_VXLAN_LOCAL] = { .type = NLA_U32},
  81         [IFLA_VXLAN_TTL] = { .type = NLA_U8 },
  82         [IFLA_VXLAN_TOS] = { .type = NLA_U8 },
  83         [IFLA_VXLAN_LEARNING] = { .type = NLA_U8 },
  84         [IFLA_VXLAN_AGEING] = { .type = NLA_U32 },
  85         [IFLA_VXLAN_LIMIT] = { .type = NLA_U32 },
  86         [IFLA_VXLAN_PORT_RANGE] = { .type = NLA_U32},
  87         [IFLA_VXLAN_PROXY] = { .type = NLA_U8 },
  88         [IFLA_VXLAN_RSC] = { .type = NLA_U8 },
  89         [IFLA_VXLAN_L2MISS] = { .type = NLA_U8 },
  90         [IFLA_VXLAN_L3MISS] = { .type = NLA_U8 },
  91 };
  92
  93 static const NLType rtnl_link_info_data_bond_types[IFLA_BOND_MAX + 1] = {
  94         [IFLA_BOND_MODE]                = { .type = NLA_U8 },
  95         [IFLA_BOND_ACTIVE_SLAVE]        = { .type = NLA_U32 },
  96         [IFLA_BOND_MIIMON]              = { .type = NLA_U32 },
  97         [IFLA_BOND_UPDELAY]             = { .type = NLA_U32 },
  98         [IFLA_BOND_DOWNDELAY]           = { .type = NLA_U32 },
  99         [IFLA_BOND_USE_CARRIER]         = { .type = NLA_U8 },
 100         [IFLA_BOND_ARP_INTERVAL]        = { .type = NLA_U32 },
 101         [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 },
 116         [IFLA_BOND_AD_INFO]             = { .type = NLA_NESTED },
 117 };
 118
 119 static const NLType rtnl_link_info_data_iptun_types[IFLA_IPTUN_MAX + 1] = {
 120         [IFLA_IPTUN_LINK]                = { .type = NLA_U32 },
 121         [IFLA_IPTUN_LOCAL]               = { .type = NLA_IN_ADDR },
 122         [IFLA_IPTUN_REMOTE]              = { .type = NLA_IN_ADDR },
 123         [IFLA_IPTUN_TTL]                 = { .type = NLA_U8 },
 124         [IFLA_IPTUN_TOS]                 = { .type = NLA_U8 },
 125         [IFLA_IPTUN_PMTUDISC]            = { .type = NLA_U8 },
 126         [IFLA_IPTUN_FLAGS]               = { .type = NLA_U16 },
 127         [IFLA_IPTUN_PROTO]               = { .type = NLA_U8 },
 128         [IFLA_IPTUN_6RD_PREFIX]          = { .type = NLA_IN_ADDR },
 129         [IFLA_IPTUN_6RD_RELAY_PREFIX]    = { .type = NLA_U32 },
 130         [IFLA_IPTUN_6RD_PREFIXLEN]       = { .type = NLA_U16 },
 131         [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NLA_U16 },
 132 };
 133
 134 static  const NLType rtnl_link_info_data_ipgre_types[IFLA_GRE_MAX + 1] = {
 135         [IFLA_GRE_LINK]     = { .type = NLA_U32 },
 136         [IFLA_GRE_IFLAGS]   = { .type = NLA_U16 },
 137         [IFLA_GRE_OFLAGS]   = { .type = NLA_U16 },
 138         [IFLA_GRE_IKEY]     = { .type = NLA_U32 },
 139         [IFLA_GRE_OKEY]     = { .type = NLA_U32 },
 140         [IFLA_GRE_LOCAL]    = { .type = NLA_IN_ADDR },
 141         [IFLA_GRE_REMOTE]   = { .type = NLA_IN_ADDR },
 142         [IFLA_GRE_TTL]      = { .type = NLA_U8 },
 143         [IFLA_GRE_TOS]      = { .type = NLA_U8 },
 144         [IFLA_GRE_PMTUDISC] = { .type = NLA_U8 },
 145 };
 146
 147 static const NLType rtnl_link_info_data_ipvti_types[IFLA_VTI_MAX + 1] = {
 148         [IFLA_VTI_LINK]         = { .type = NLA_U32 },
 149         [IFLA_VTI_IKEY]         = { .type = NLA_U32 },
 150         [IFLA_VTI_OKEY]         = { .type = NLA_U32 },
 151         [IFLA_VTI_LOCAL]        = { .type = NLA_IN_ADDR  },
 152         [IFLA_VTI_REMOTE]       = { .type = NLA_IN_ADDR  },
 153 };
 154
 155 static const NLType rtnl_link_info_data_ip6tnl_types[IFLA_IPTUN_MAX + 1] = {
 156         [IFLA_IPTUN_LINK]                = { .type = NLA_U32 },
 157         [IFLA_IPTUN_LOCAL]               = { .type = NLA_IN_ADDR },
 158         [IFLA_IPTUN_REMOTE]              = { .type = NLA_IN_ADDR },
 159         [IFLA_IPTUN_TTL]                 = { .type = NLA_U8 },
 160         [IFLA_IPTUN_FLAGS]               = { .type = NLA_U32 },
 161         [IFLA_IPTUN_PROTO]               = { .type = NLA_U8 },
 162         [IFLA_IPTUN_ENCAP_LIMIT]         = { .type = NLA_U8 },
 163         [IFLA_IPTUN_FLOWINFO]            = { .type = NLA_U32},
 164 };
 165
 166 /* these strings must match the .kind entries in the kernel */
 167 static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = {
 168         [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
 169         [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
 170         [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
 171         [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
 172         [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
 173         [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
 174         [NL_UNION_LINK_INFO_DATA_IPVLAN] = "ipvlan",
 175         [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
 176         [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
 177         [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
 178         [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = "gretap",
 179         [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = "ip6gre",
 180         [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = "ip6gretap",
 181         [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
 182         [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
 183         [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = "ip6tnl",
 184 };
 185
 186 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
 187
 188 static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = {
 189         [NL_UNION_LINK_INFO_DATA_BOND] =        { .max = ELEMENTSOF(rtnl_link_info_data_bond_types) - 1,
 190                                                   .types = rtnl_link_info_data_bond_types },
 191         [NL_UNION_LINK_INFO_DATA_BRIDGE] =      { .max = ELEMENTSOF(rtnl_link_info_data_bridge_types) - 1,
 192                                                   .types = rtnl_link_info_data_bridge_types },
 193         [NL_UNION_LINK_INFO_DATA_VLAN] =        { .max = ELEMENTSOF(rtnl_link_info_data_vlan_types) - 1,
 194                                                   .types = rtnl_link_info_data_vlan_types },
 195         [NL_UNION_LINK_INFO_DATA_VETH] =        { .max = ELEMENTSOF(rtnl_link_info_data_veth_types) - 1,
 196                                                   .types = rtnl_link_info_data_veth_types },
 197         [NL_UNION_LINK_INFO_DATA_MACVLAN] =     { .max = ELEMENTSOF(rtnl_link_info_data_macvlan_types) - 1,
 198                                                   .types = rtnl_link_info_data_macvlan_types },
 199         [NL_UNION_LINK_INFO_DATA_IPVLAN] =      { .max = ELEMENTSOF(rtnl_link_info_data_ipvlan_types) - 1,
 200                                                   .types = rtnl_link_info_data_ipvlan_types },
 201         [NL_UNION_LINK_INFO_DATA_VXLAN] =       { .max = ELEMENTSOF(rtnl_link_info_data_vxlan_types) - 1,
 202                                                   .types = rtnl_link_info_data_vxlan_types },
 203         [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
 204                                                   .types = rtnl_link_info_data_iptun_types },
 205         [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
 206                                                     .types = rtnl_link_info_data_ipgre_types },
 207         [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
 208                                                     .types = rtnl_link_info_data_ipgre_types },
 209         [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
 210                                                     .types = rtnl_link_info_data_ipgre_types },
 211         [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
 212                                                     .types = rtnl_link_info_data_ipgre_types },
 213         [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
 214                                                   .types = rtnl_link_info_data_iptun_types },
 215         [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipvti_types) - 1,
 216                                                   .types = rtnl_link_info_data_ipvti_types },
 217         [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ip6tnl_types) - 1,
 218                                                      .types = rtnl_link_info_data_ip6tnl_types },
 219
 220 };
 221
 222 static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
 223         .num = _NL_UNION_LINK_INFO_DATA_MAX,
 224         .lookup = nl_union_link_info_data_from_string,
 225         .type_systems = rtnl_link_info_data_type_systems,
 226         .match_type = NL_MATCH_SIBLING,
 227         .match = IFLA_INFO_KIND,
 228 };
 229
 230 static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = {
 231         [IFLA_INFO_KIND]        = { .type = NLA_STRING },
 232         [IFLA_INFO_DATA]        = { .type = NLA_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
 233 /*
 234         [IFLA_INFO_XSTATS],
 235         [IFLA_INFO_SLAVE_KIND]  = { .type = NLA_STRING },
 236         [IFLA_INFO_SLAVE_DATA]  = { .type = NLA_NESTED },
 237 */
 238 };
 239
 240 static const NLTypeSystem rtnl_link_info_type_system = {
 241         .max = ELEMENTSOF(rtnl_link_info_types) - 1,
 242         .types = rtnl_link_info_types,
 243 };
 244
 245 static const struct NLType rtnl_prot_info_bridge_port_types[IFLA_BRPORT_MAX + 1] = {
 246         [IFLA_BRPORT_STATE]     = { .type = NLA_U8 },
 247         [IFLA_BRPORT_COST]      = { .type = NLA_U32 },
 248         [IFLA_BRPORT_PRIORITY]  = { .type = NLA_U16 },
 249         [IFLA_BRPORT_MODE]      = { .type = NLA_U8 },
 250         [IFLA_BRPORT_GUARD]     = { .type = NLA_U8 },
 251         [IFLA_BRPORT_PROTECT]   = { .type = NLA_U8 },
 252         [IFLA_BRPORT_LEARNING]  = { .type = NLA_U8 },
 253         [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
 254 };
 255
 256 static const NLTypeSystem rtnl_prot_info_type_systems[AF_MAX] = {
 257         [AF_BRIDGE] =   { .max = ELEMENTSOF(rtnl_prot_info_bridge_port_types) - 1,
 258                           .types = rtnl_prot_info_bridge_port_types },
 259 };
 260
 261 static const NLTypeSystemUnion rtnl_prot_info_type_system_union = {
 262         .num = AF_MAX,
 263         .type_systems = rtnl_prot_info_type_systems,
 264         .match_type = NL_MATCH_PROTOCOL,
 265 };
 266
 267 static const struct NLType rtnl_af_spec_inet6_types[IFLA_INET6_MAX + 1] = {
 268         [IFLA_INET6_FLAGS]              = { .type = NLA_U32 },
 269 /*
 270         IFLA_INET6_CONF,
 271         IFLA_INET6_STATS,
 272         IFLA_INET6_MCAST,
 273         IFLA_INET6_CACHEINFO,
 274         IFLA_INET6_ICMP6STATS,
 275 */
 276         [IFLA_INET6_TOKEN]              = { .type = NLA_IN_ADDR },
 277         [IFLA_INET6_ADDR_GEN_MODE]      = { .type = NLA_U8 },
 278 };
 279
 280 static const NLTypeSystem rtnl_af_spec_inet6_type_system = {
 281         .max = ELEMENTSOF(rtnl_af_spec_inet6_types) - 1,
 282         .types = rtnl_af_spec_inet6_types,
 283 };
 284
 285 static const NLType rtnl_af_spec_types[AF_MAX + 1] = {
 286         [AF_INET6] =    { .type = NLA_NESTED, .type_system = &rtnl_af_spec_inet6_type_system },
 287 };
 288
 289 static const NLTypeSystem rtnl_af_spec_type_system = {
 290         .max = ELEMENTSOF(rtnl_af_spec_types) - 1,
 291         .types = rtnl_af_spec_types,
 292 };
 293
 294 static const NLType rtnl_link_types[IFLA_MAX + 1 ] = {
 295         [IFLA_ADDRESS]          = { .type = NLA_ETHER_ADDR, },
 296         [IFLA_BROADCAST]        = { .type = NLA_ETHER_ADDR, },
 297         [IFLA_IFNAME]           = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
 298         [IFLA_MTU]              = { .type = NLA_U32 },
 299         [IFLA_LINK]             = { .type = NLA_U32 },
 300 /*
 301         [IFLA_QDISC],
 302         [IFLA_STATS],
 303         [IFLA_COST],
 304         [IFLA_PRIORITY],
 305 */
 306         [IFLA_MASTER]           = { .type = NLA_U32 },
 307 /*
 308         [IFLA_WIRELESS],
 309 */
 310         [IFLA_PROTINFO]         = { .type = NLA_UNION, .type_system_union = &rtnl_prot_info_type_system_union },
 311         [IFLA_TXQLEN]           = { .type = NLA_U32 },
 312 /*
 313         [IFLA_MAP]              = { .len = sizeof(struct rtnl_link_ifmap) },
 314 */
 315         [IFLA_WEIGHT]           = { .type = NLA_U32 },
 316         [IFLA_OPERSTATE]        = { .type = NLA_U8 },
 317         [IFLA_LINKMODE]         = { .type = NLA_U8 },
 318         [IFLA_LINKINFO]         = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
 319         [IFLA_NET_NS_PID]       = { .type = NLA_U32 },
 320         [IFLA_IFALIAS]          = { .type = NLA_STRING, .size = IFALIASZ - 1 },
 321 /*
 322         [IFLA_NUM_VF],
 323         [IFLA_VFINFO_LIST]      = {. type = NLA_NESTED, },
 324         [IFLA_STATS64],
 325         [IFLA_VF_PORTS]         = { .type = NLA_NESTED },
 326         [IFLA_PORT_SELF]        = { .type = NLA_NESTED },
 327 */
 328         [IFLA_AF_SPEC]          = { .type = NLA_NESTED, .type_system = &rtnl_af_spec_type_system },
 329 /*
 330         [IFLA_VF_PORTS],
 331         [IFLA_PORT_SELF],
 332         [IFLA_AF_SPEC],
 333 */
 334         [IFLA_GROUP]            = { .type = NLA_U32 },
 335         [IFLA_NET_NS_FD]        = { .type = NLA_U32 },
 336         [IFLA_EXT_MASK]         = { .type = NLA_U32 },
 337         [IFLA_PROMISCUITY]      = { .type = NLA_U32 },
 338         [IFLA_NUM_TX_QUEUES]    = { .type = NLA_U32 },
 339         [IFLA_NUM_RX_QUEUES]    = { .type = NLA_U32 },
 340         [IFLA_CARRIER]          = { .type = NLA_U8 },
 341 /*
 342         [IFLA_PHYS_PORT_ID]     = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
 343 */
 344 };
 345
 346 static const NLTypeSystem rtnl_link_type_system = {
 347         .max = ELEMENTSOF(rtnl_link_types) - 1,
 348         .types = rtnl_link_types,
 349 };
 350
 351 static const NLType rtnl_address_types[IFA_MAX + 1] = {
 352         [IFA_ADDRESS]           = { .type = NLA_IN_ADDR },
 353         [IFA_LOCAL]             = { .type = NLA_IN_ADDR },
 354         [IFA_LABEL]             = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
 355         [IFA_BROADCAST]         = { .type = NLA_IN_ADDR }, /* 6? */
 356         [IFA_CACHEINFO]         = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
 357 /*
 358         [IFA_ANYCAST],
 359         [IFA_MULTICAST],
 360 */
 361         [IFA_FLAGS]             = { .type = NLA_U32 },
 362 };
 363
 364 static const NLTypeSystem rtnl_address_type_system = {
 365         .max = ELEMENTSOF(rtnl_address_types) - 1,
 366         .types = rtnl_address_types,
 367 };
 368
 369 static const NLType rtnl_route_types[RTA_MAX + 1] = {
 370         [RTA_DST]               = { .type = NLA_IN_ADDR }, /* 6? */
 371         [RTA_SRC]               = { .type = NLA_IN_ADDR }, /* 6? */
 372         [RTA_IIF]               = { .type = NLA_U32 },
 373         [RTA_OIF]               = { .type = NLA_U32 },
 374         [RTA_GATEWAY]           = { .type = NLA_IN_ADDR },
 375         [RTA_PRIORITY]          = { .type = NLA_U32 },
 376         [RTA_PREFSRC]           = { .type = NLA_IN_ADDR }, /* 6? */
 377 /*
 378         [RTA_METRICS]           = { .type = NLA_NESTED },
 379         [RTA_MULTIPATH]         = { .len = sizeof(struct rtnexthop) },
 380 */
 381         [RTA_FLOW]              = { .type = NLA_U32 }, /* 6? */
 382 /*
 383         RTA_CACHEINFO,
 384         RTA_TABLE,
 385         RTA_MARK,
 386         RTA_MFC_STATS,
 387 */
 388 };
 389
 390 static const NLTypeSystem rtnl_route_type_system = {
 391         .max = ELEMENTSOF(rtnl_route_types) - 1,
 392         .types = rtnl_route_types,
 393 };
 394
 395 static const NLType rtnl_neigh_types[NDA_MAX + 1] = {
 396         [NDA_DST]               = { .type = NLA_IN_ADDR },
 397         [NDA_LLADDR]            = { .type = NLA_ETHER_ADDR },
 398         [NDA_CACHEINFO]         = { .type = NLA_CACHE_INFO, .size = sizeof(struct nda_cacheinfo) },
 399         [NDA_PROBES]            = { .type = NLA_U32 },
 400         [NDA_VLAN]              = { .type = NLA_U16 },
 401         [NDA_PORT]              = { .type = NLA_U16 },
 402         [NDA_VNI]               = { .type = NLA_U32 },
 403         [NDA_IFINDEX]           = { .type = NLA_U32 },
 404 };
 405
 406 static const NLTypeSystem rtnl_neigh_type_system = {
 407         .max = ELEMENTSOF(rtnl_neigh_types) - 1,
 408         .types = rtnl_neigh_types,
 409 };
 410
 411 static const NLType rtnl_types[RTM_MAX + 1] = {
 412         [NLMSG_DONE]   = { .type = NLA_META, .size = 0 },
 413         [NLMSG_ERROR]  = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
 414         [RTM_NEWLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 415         [RTM_DELLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 416         [RTM_GETLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 417         [RTM_SETLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 418         [RTM_NEWADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 419         [RTM_DELADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 420         [RTM_GETADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 421         [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 422         [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 423         [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 424         [RTM_NEWNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 425         [RTM_DELNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 426         [RTM_GETNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 427 };
 428
 429 const NLTypeSystem rtnl_type_system = {
 430         .max = ELEMENTSOF(rtnl_types) - 1,
 431         .types = rtnl_types,
 432 };
 433
 434 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
 435         const NLType *nl_type;
 436
 437         assert(ret);
 438
 439         if (!type_system)
 440                 type_system = &rtnl_type_system;
 441
 442         assert(type_system->types);
 443
 444         if (type > type_system->max)
 445                 return -EOPNOTSUPP;
 446
 447         nl_type = &type_system->types[type];
 448
 449         if (nl_type->type == NLA_UNSPEC)
 450                 return -EOPNOTSUPP;
 451
 452         *ret = nl_type;
 453
 454         return 0;
 455 }
 456
 457 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
 458         const NLType *nl_type;
 459         int r;
 460
 461         assert(ret);
 462
 463         r = type_system_get_type(type_system, &nl_type, type);
 464         if (r < 0)
 465                 return r;
 466
 467         assert(nl_type->type == NLA_NESTED);
 468         assert(nl_type->type_system);
 469
 470         *ret = nl_type->type_system;
 471
 472         return 0;
 473 }
 474
 475 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
 476         const NLType *nl_type;
 477         int r;
 478
 479         assert(ret);
 480
 481         r = type_system_get_type(type_system, &nl_type, type);
 482         if (r < 0)
 483                 return r;
 484
 485         assert(nl_type->type == NLA_UNION);
 486         assert(nl_type->type_system_union);
 487
 488         *ret = nl_type->type_system_union;
 489
 490         return 0;
 491 }
 492
 493 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
 494         int type;
 495
 496         assert(type_system_union);
 497         assert(type_system_union->match_type == NL_MATCH_SIBLING);
 498         assert(type_system_union->lookup);
 499         assert(type_system_union->type_systems);
 500         assert(ret);
 501         assert(key);
 502
 503         type = type_system_union->lookup(key);
 504         if (type < 0)
 505                 return -EOPNOTSUPP;
 506
 507         assert(type < type_system_union->num);
 508
 509         *ret = &type_system_union->type_systems[type];
 510
 511         return 0;
 512 }
 513
 514 int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
 515         const NLTypeSystem *type_system;
 516
 517         assert(type_system_union);
 518         assert(type_system_union->type_systems);
 519         assert(type_system_union->match_type == NL_MATCH_PROTOCOL);
 520         assert(ret);
 521
 522         if (protocol >= type_system_union->num)
 523                 return -EOPNOTSUPP;
 524
 525         type_system = &type_system_union->type_systems[protocol];
 526         if (type_system->max == 0)
 527                 return -EOPNOTSUPP;
 528
 529         *ret = type_system;
 530
 531         return 0;
 532 }