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 #ifdef IFA_FLAGS
 362         [IFA_FLAGS]             = { .type = NLA_U32 },
 363 #endif
 364 };
 365
 366 static const NLTypeSystem rtnl_address_type_system = {
 367         .max = ELEMENTSOF(rtnl_address_types) - 1,
 368         .types = rtnl_address_types,
 369 };
 370
 371 static const NLType rtnl_route_types[RTA_MAX + 1] = {
 372         [RTA_DST]               = { .type = NLA_IN_ADDR }, /* 6? */
 373         [RTA_SRC]               = { .type = NLA_IN_ADDR }, /* 6? */
 374         [RTA_IIF]               = { .type = NLA_U32 },
 375         [RTA_OIF]               = { .type = NLA_U32 },
 376         [RTA_GATEWAY]           = { .type = NLA_IN_ADDR },
 377         [RTA_PRIORITY]          = { .type = NLA_U32 },
 378         [RTA_PREFSRC]           = { .type = NLA_IN_ADDR }, /* 6? */
 379 /*
 380         [RTA_METRICS]           = { .type = NLA_NESTED },
 381         [RTA_MULTIPATH]         = { .len = sizeof(struct rtnexthop) },
 382 */
 383         [RTA_FLOW]              = { .type = NLA_U32 }, /* 6? */
 384 /*
 385         RTA_CACHEINFO,
 386         RTA_TABLE,
 387         RTA_MARK,
 388         RTA_MFC_STATS,
 389 */
 390 };
 391
 392 static const NLTypeSystem rtnl_route_type_system = {
 393         .max = ELEMENTSOF(rtnl_route_types) - 1,
 394         .types = rtnl_route_types,
 395 };
 396
 397 static const NLType rtnl_neigh_types[NDA_MAX + 1] = {
 398         [NDA_DST]               = { .type = NLA_IN_ADDR },
 399         [NDA_LLADDR]            = { .type = NLA_ETHER_ADDR },
 400         [NDA_CACHEINFO]         = { .type = NLA_CACHE_INFO, .size = sizeof(struct nda_cacheinfo) },
 401         [NDA_PROBES]            = { .type = NLA_U32 },
 402         [NDA_VLAN]              = { .type = NLA_U16 },
 403         [NDA_PORT]              = { .type = NLA_U16 },
 404         [NDA_VNI]               = { .type = NLA_U32 },
 405         [NDA_IFINDEX]           = { .type = NLA_U32 },
 406 };
 407
 408 static const NLTypeSystem rtnl_neigh_type_system = {
 409         .max = ELEMENTSOF(rtnl_neigh_types) - 1,
 410         .types = rtnl_neigh_types,
 411 };
 412
 413 static const NLType rtnl_types[RTM_MAX + 1] = {
 414         [NLMSG_ERROR]  = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
 415         [RTM_NEWLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 416         [RTM_DELLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 417         [RTM_GETLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 418         [RTM_SETLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 419         [RTM_NEWADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 420         [RTM_DELADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 421         [RTM_GETADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 422         [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 423         [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 424         [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 425         [RTM_NEWNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 426         [RTM_DELNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 427         [RTM_GETNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 428 };
 429
 430 const NLTypeSystem rtnl_type_system = {
 431         .max = ELEMENTSOF(rtnl_types) - 1,
 432         .types = rtnl_types,
 433 };
 434
 435 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
 436         const NLType *nl_type;
 437
 438         assert(ret);
 439
 440         if (!type_system)
 441                 type_system = &rtnl_type_system;
 442
 443         assert(type_system->types);
 444
 445         if (type > type_system->max)
 446                 return -ENOTSUP;
 447
 448         nl_type = &type_system->types[type];
 449
 450         if (nl_type->type == NLA_UNSPEC)
 451                 return -ENOTSUP;
 452
 453         *ret = nl_type;
 454
 455         return 0;
 456 }
 457
 458 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
 459         const NLType *nl_type;
 460         int r;
 461
 462         assert(ret);
 463
 464         r = type_system_get_type(type_system, &nl_type, type);
 465         if (r < 0)
 466                 return r;
 467
 468         assert_return(nl_type->type == NLA_NESTED, -EINVAL);
 469
 470         assert(nl_type->type_system);
 471
 472         *ret = nl_type->type_system;
 473
 474         return 0;
 475 }
 476
 477 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
 478         const NLType *nl_type;
 479         int r;
 480
 481         assert(ret);
 482
 483         r = type_system_get_type(type_system, &nl_type, type);
 484         if (r < 0)
 485                 return r;
 486
 487         assert_return(nl_type->type == NLA_UNION, -EINVAL);
 488
 489         assert(nl_type->type_system_union);
 490
 491         *ret = nl_type->type_system_union;
 492
 493         return 0;
 494 }
 495
 496 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
 497         int type;
 498
 499         assert(type_system_union);
 500         assert_return(type_system_union->match_type == NL_MATCH_SIBLING, -EINVAL);
 501         assert(type_system_union->lookup);
 502         assert(type_system_union->type_systems);
 503         assert(ret);
 504         assert(key);
 505
 506         type = type_system_union->lookup(key);
 507         if (type < 0)
 508                 return -ENOTSUP;
 509
 510         assert(type < type_system_union->num);
 511
 512         *ret = &type_system_union->type_systems[type];
 513
 514         return 0;
 515 }
 516
 517 int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
 518         const NLTypeSystem *type_system;
 519
 520         assert(type_system_union);
 521         assert(type_system_union->type_systems);
 522         assert(ret);
 523         assert_return(type_system_union->match_type == NL_MATCH_PROTOCOL, -EINVAL);
 524         assert_return(protocol < type_system_union->num, -EINVAL);
 525
 526         if (protocol >= type_system_union->num)
 527                 return -ENOTSUP;
 528
 529         type_system = &type_system_union->type_systems[protocol];
 530
 531         if (!type_system)
 532                 return -ENOTSUP;
 533
 534         *ret = type_system;
 535
 536         return 0;
 537 }