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 <stddef.h>
  23 #include <stdint.h>
  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>
  31 #include <linux/if.h>
  32
  33 #include <linux/ip.h>
  34 #include <linux/if_link.h>
  35 #include <linux/if_tunnel.h>
  36
  37 #include "macro.h"
  38 #include "util.h"
  39
  40 #include "rtnl-types.h"
  41 #include "missing.h"
  42
  43 static const NLTypeSystem rtnl_link_type_system;
  44
  45 static const NLType rtnl_link_info_data_veth_types[VETH_INFO_MAX + 1] = {
  46         [VETH_INFO_PEER]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
  47 };
  48
  49 static const NLType rtnl_link_info_data_ipvlan_types[IFLA_IPVLAN_MAX + 1] = {
  50         [IFLA_IPVLAN_MODE]  = { .type = NLA_U16 },
  51 };
  52
  53 static const NLType rtnl_link_info_data_macvlan_types[IFLA_MACVLAN_MAX + 1] = {
  54         [IFLA_MACVLAN_MODE]  = { .type = NLA_U32 },
  55         [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 },
  56 };
  57
  58 static const NLType rtnl_link_info_data_bridge_types[IFLA_BRIDGE_MAX + 1] = {
  59         [IFLA_BRIDGE_FLAGS]     = { .type = NLA_U16 },
  60         [IFLA_BRIDGE_MODE]      = { .type = NLA_U16 },
  61 /*
  62         [IFLA_BRIDGE_VLAN_INFO] = { .type = NLA_BINARY,
  63                                     .len = sizeof(struct bridge_vlan_info), },
  64 */
  65 };
  66
  67 static const NLType rtnl_link_info_data_vlan_types[IFLA_VLAN_MAX + 1] = {
  68         [IFLA_VLAN_ID]          = { .type = NLA_U16 },
  69 /*
  70         [IFLA_VLAN_FLAGS]       = { .len = sizeof(struct ifla_vlan_flags) },
  71         [IFLA_VLAN_EGRESS_QOS]  = { .type = NLA_NESTED },
  72         [IFLA_VLAN_INGRESS_QOS] = { .type = NLA_NESTED },
  73 */
  74         [IFLA_VLAN_PROTOCOL]    = { .type = NLA_U16 },
  75 };
  76
  77 static const NLType rtnl_link_info_data_vxlan_types[IFLA_VXLAN_MAX+1] = {
  78         [IFLA_VXLAN_ID] = { .type = NLA_U32 },
  79         [IFLA_VXLAN_GROUP] = {.type = NLA_IN_ADDR },
  80         [IFLA_VXLAN_LINK] = { .type = NLA_U32 },
  81         [IFLA_VXLAN_LOCAL] = { .type = NLA_U32},
  82         [IFLA_VXLAN_TTL] = { .type = NLA_U8 },
  83         [IFLA_VXLAN_TOS] = { .type = NLA_U8 },
  84         [IFLA_VXLAN_LEARNING] = { .type = NLA_U8 },
  85         [IFLA_VXLAN_AGEING] = { .type = NLA_U32 },
  86         [IFLA_VXLAN_LIMIT] = { .type = NLA_U32 },
  87         [IFLA_VXLAN_PORT_RANGE] = { .type = NLA_U32},
  88         [IFLA_VXLAN_PROXY] = { .type = NLA_U8 },
  89         [IFLA_VXLAN_RSC] = { .type = NLA_U8 },
  90         [IFLA_VXLAN_L2MISS] = { .type = NLA_U8 },
  91         [IFLA_VXLAN_L3MISS] = { .type = NLA_U8 },
  92 };
  93
  94 static const NLType rtnl_link_info_data_bond_types[IFLA_BOND_MAX + 1] = {
  95         [IFLA_BOND_MODE]                = { .type = NLA_U8 },
  96         [IFLA_BOND_ACTIVE_SLAVE]        = { .type = NLA_U32 },
  97         [IFLA_BOND_MIIMON]              = { .type = NLA_U32 },
  98         [IFLA_BOND_UPDELAY]             = { .type = NLA_U32 },
  99         [IFLA_BOND_DOWNDELAY]           = { .type = NLA_U32 },
 100         [IFLA_BOND_USE_CARRIER]         = { .type = NLA_U8 },
 101         [IFLA_BOND_ARP_INTERVAL]        = { .type = NLA_U32 },
 102         [IFLA_BOND_ARP_IP_TARGET]       = { .type = NLA_NESTED },
 103         [IFLA_BOND_ARP_VALIDATE]        = { .type = NLA_U32 },
 104         [IFLA_BOND_ARP_ALL_TARGETS]     = { .type = NLA_U32 },
 105         [IFLA_BOND_PRIMARY]             = { .type = NLA_U32 },
 106         [IFLA_BOND_PRIMARY_RESELECT]    = { .type = NLA_U8 },
 107         [IFLA_BOND_FAIL_OVER_MAC]       = { .type = NLA_U8 },
 108         [IFLA_BOND_XMIT_HASH_POLICY]    = { .type = NLA_U8 },
 109         [IFLA_BOND_RESEND_IGMP]         = { .type = NLA_U32 },
 110         [IFLA_BOND_NUM_PEER_NOTIF]      = { .type = NLA_U8 },
 111         [IFLA_BOND_ALL_SLAVES_ACTIVE]   = { .type = NLA_U8 },
 112         [IFLA_BOND_MIN_LINKS]           = { .type = NLA_U32 },
 113         [IFLA_BOND_LP_INTERVAL]         = { .type = NLA_U32 },
 114         [IFLA_BOND_PACKETS_PER_SLAVE]   = { .type = NLA_U32 },
 115         [IFLA_BOND_AD_LACP_RATE]        = { .type = NLA_U8 },
 116         [IFLA_BOND_AD_SELECT]           = { .type = NLA_U8 },
 117         [IFLA_BOND_AD_INFO]             = { .type = NLA_NESTED },
 118 };
 119
 120 static const NLType rtnl_link_info_data_iptun_types[IFLA_IPTUN_MAX + 1] = {
 121         [IFLA_IPTUN_LINK]                = { .type = NLA_U32 },
 122         [IFLA_IPTUN_LOCAL]               = { .type = NLA_IN_ADDR },
 123         [IFLA_IPTUN_REMOTE]              = { .type = NLA_IN_ADDR },
 124         [IFLA_IPTUN_TTL]                 = { .type = NLA_U8 },
 125         [IFLA_IPTUN_TOS]                 = { .type = NLA_U8 },
 126         [IFLA_IPTUN_PMTUDISC]            = { .type = NLA_U8 },
 127         [IFLA_IPTUN_FLAGS]               = { .type = NLA_U16 },
 128         [IFLA_IPTUN_PROTO]               = { .type = NLA_U8 },
 129         [IFLA_IPTUN_6RD_PREFIX]          = { .type = NLA_IN_ADDR },
 130         [IFLA_IPTUN_6RD_RELAY_PREFIX]    = { .type = NLA_U32 },
 131         [IFLA_IPTUN_6RD_PREFIXLEN]       = { .type = NLA_U16 },
 132         [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NLA_U16 },
 133 };
 134
 135 static  const NLType rtnl_link_info_data_ipgre_types[IFLA_GRE_MAX + 1] = {
 136         [IFLA_GRE_LINK]     = { .type = NLA_U32 },
 137         [IFLA_GRE_IFLAGS]   = { .type = NLA_U16 },
 138         [IFLA_GRE_OFLAGS]   = { .type = NLA_U16 },
 139         [IFLA_GRE_IKEY]     = { .type = NLA_U32 },
 140         [IFLA_GRE_OKEY]     = { .type = NLA_U32 },
 141         [IFLA_GRE_LOCAL]    = { .type = NLA_IN_ADDR },
 142         [IFLA_GRE_REMOTE]   = { .type = NLA_IN_ADDR },
 143         [IFLA_GRE_TTL]      = { .type = NLA_U8 },
 144         [IFLA_GRE_TOS]      = { .type = NLA_U8 },
 145         [IFLA_GRE_PMTUDISC] = { .type = NLA_U8 },
 146 };
 147
 148 static const NLType rtnl_link_info_data_ipvti_types[IFLA_VTI_MAX + 1] = {
 149         [IFLA_VTI_LINK]         = { .type = NLA_U32 },
 150         [IFLA_VTI_IKEY]         = { .type = NLA_U32 },
 151         [IFLA_VTI_OKEY]         = { .type = NLA_U32 },
 152         [IFLA_VTI_LOCAL]        = { .type = NLA_IN_ADDR  },
 153         [IFLA_VTI_REMOTE]       = { .type = NLA_IN_ADDR  },
 154 };
 155
 156 static const NLType rtnl_link_info_data_ip6tnl_types[IFLA_IPTUN_MAX + 1] = {
 157         [IFLA_IPTUN_LINK]                = { .type = NLA_U32 },
 158         [IFLA_IPTUN_LOCAL]               = { .type = NLA_IN_ADDR },
 159         [IFLA_IPTUN_REMOTE]              = { .type = NLA_IN_ADDR },
 160         [IFLA_IPTUN_TTL]                 = { .type = NLA_U8 },
 161         [IFLA_IPTUN_FLAGS]               = { .type = NLA_U32 },
 162         [IFLA_IPTUN_PROTO]               = { .type = NLA_U8 },
 163         [IFLA_IPTUN_ENCAP_LIMIT]         = { .type = NLA_U8 },
 164         [IFLA_IPTUN_FLOWINFO]            = { .type = NLA_U32},
 165 };
 166
 167 /* these strings must match the .kind entries in the kernel */
 168 static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = {
 169         [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
 170         [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
 171         [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
 172         [NL_UNION_LINK_INFO_DATA_VETH] = "veth",
 173         [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
 174         [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
 175         [NL_UNION_LINK_INFO_DATA_IPVLAN] = "ipvlan",
 176         [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
 177         [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
 178         [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
 179         [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = "gretap",
 180         [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = "ip6gre",
 181         [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = "ip6gretap",
 182         [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
 183         [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
 184         [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = "ip6tnl",
 185 };
 186
 187 DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
 188
 189 static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = {
 190         [NL_UNION_LINK_INFO_DATA_BOND] =        { .max = ELEMENTSOF(rtnl_link_info_data_bond_types) - 1,
 191                                                   .types = rtnl_link_info_data_bond_types },
 192         [NL_UNION_LINK_INFO_DATA_BRIDGE] =      { .max = ELEMENTSOF(rtnl_link_info_data_bridge_types) - 1,
 193                                                   .types = rtnl_link_info_data_bridge_types },
 194         [NL_UNION_LINK_INFO_DATA_VLAN] =        { .max = ELEMENTSOF(rtnl_link_info_data_vlan_types) - 1,
 195                                                   .types = rtnl_link_info_data_vlan_types },
 196         [NL_UNION_LINK_INFO_DATA_VETH] =        { .max = ELEMENTSOF(rtnl_link_info_data_veth_types) - 1,
 197                                                   .types = rtnl_link_info_data_veth_types },
 198         [NL_UNION_LINK_INFO_DATA_MACVLAN] =     { .max = ELEMENTSOF(rtnl_link_info_data_macvlan_types) - 1,
 199                                                   .types = rtnl_link_info_data_macvlan_types },
 200         [NL_UNION_LINK_INFO_DATA_IPVLAN] =      { .max = ELEMENTSOF(rtnl_link_info_data_ipvlan_types) - 1,
 201                                                   .types = rtnl_link_info_data_ipvlan_types },
 202         [NL_UNION_LINK_INFO_DATA_VXLAN] =       { .max = ELEMENTSOF(rtnl_link_info_data_vxlan_types) - 1,
 203                                                   .types = rtnl_link_info_data_vxlan_types },
 204         [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
 205                                                   .types = rtnl_link_info_data_iptun_types },
 206         [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
 207                                                     .types = rtnl_link_info_data_ipgre_types },
 208         [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
 209                                                     .types = rtnl_link_info_data_ipgre_types },
 210         [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
 211                                                     .types = rtnl_link_info_data_ipgre_types },
 212         [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
 213                                                     .types = rtnl_link_info_data_ipgre_types },
 214         [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
 215                                                   .types = rtnl_link_info_data_iptun_types },
 216         [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipvti_types) - 1,
 217                                                   .types = rtnl_link_info_data_ipvti_types },
 218         [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ip6tnl_types) - 1,
 219                                                      .types = rtnl_link_info_data_ip6tnl_types },
 220
 221 };
 222
 223 static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
 224         .num = _NL_UNION_LINK_INFO_DATA_MAX,
 225         .lookup = nl_union_link_info_data_from_string,
 226         .type_systems = rtnl_link_info_data_type_systems,
 227         .match_type = NL_MATCH_SIBLING,
 228         .match = IFLA_INFO_KIND,
 229 };
 230
 231 static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = {
 232         [IFLA_INFO_KIND]        = { .type = NLA_STRING },
 233         [IFLA_INFO_DATA]        = { .type = NLA_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
 234 /*
 235         [IFLA_INFO_XSTATS],
 236         [IFLA_INFO_SLAVE_KIND]  = { .type = NLA_STRING },
 237         [IFLA_INFO_SLAVE_DATA]  = { .type = NLA_NESTED },
 238 */
 239 };
 240
 241 static const NLTypeSystem rtnl_link_info_type_system = {
 242         .max = ELEMENTSOF(rtnl_link_info_types) - 1,
 243         .types = rtnl_link_info_types,
 244 };
 245
 246 static const struct NLType rtnl_prot_info_bridge_port_types[IFLA_BRPORT_MAX + 1] = {
 247         [IFLA_BRPORT_STATE]     = { .type = NLA_U8 },
 248         [IFLA_BRPORT_COST]      = { .type = NLA_U32 },
 249         [IFLA_BRPORT_PRIORITY]  = { .type = NLA_U16 },
 250         [IFLA_BRPORT_MODE]      = { .type = NLA_U8 },
 251         [IFLA_BRPORT_GUARD]     = { .type = NLA_U8 },
 252         [IFLA_BRPORT_PROTECT]   = { .type = NLA_U8 },
 253         [IFLA_BRPORT_LEARNING]  = { .type = NLA_U8 },
 254         [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
 255 };
 256
 257 static const NLTypeSystem rtnl_prot_info_type_systems[AF_MAX] = {
 258         [AF_BRIDGE] =   { .max = ELEMENTSOF(rtnl_prot_info_bridge_port_types) - 1,
 259                           .types = rtnl_prot_info_bridge_port_types },
 260 };
 261
 262 static const NLTypeSystemUnion rtnl_prot_info_type_system_union = {
 263         .num = AF_MAX,
 264         .type_systems = rtnl_prot_info_type_systems,
 265         .match_type = NL_MATCH_PROTOCOL,
 266 };
 267
 268 static const struct NLType rtnl_af_spec_inet6_types[IFLA_INET6_MAX + 1] = {
 269         [IFLA_INET6_FLAGS]              = { .type = NLA_U32 },
 270 /*
 271         IFLA_INET6_CONF,
 272         IFLA_INET6_STATS,
 273         IFLA_INET6_MCAST,
 274         IFLA_INET6_CACHEINFO,
 275         IFLA_INET6_ICMP6STATS,
 276 */
 277         [IFLA_INET6_TOKEN]              = { .type = NLA_IN_ADDR },
 278         [IFLA_INET6_ADDR_GEN_MODE]      = { .type = NLA_U8 },
 279 };
 280
 281 static const NLTypeSystem rtnl_af_spec_inet6_type_system = {
 282         .max = ELEMENTSOF(rtnl_af_spec_inet6_types) - 1,
 283         .types = rtnl_af_spec_inet6_types,
 284 };
 285
 286 static const NLType rtnl_af_spec_types[AF_MAX + 1] = {
 287         [AF_INET6] =    { .type = NLA_NESTED, .type_system = &rtnl_af_spec_inet6_type_system },
 288 };
 289
 290 static const NLTypeSystem rtnl_af_spec_type_system = {
 291         .max = ELEMENTSOF(rtnl_af_spec_types) - 1,
 292         .types = rtnl_af_spec_types,
 293 };
 294
 295 static const NLType rtnl_link_types[IFLA_MAX + 1 ] = {
 296         [IFLA_ADDRESS]          = { .type = NLA_ETHER_ADDR, },
 297         [IFLA_BROADCAST]        = { .type = NLA_ETHER_ADDR, },
 298         [IFLA_IFNAME]           = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
 299         [IFLA_MTU]              = { .type = NLA_U32 },
 300         [IFLA_LINK]             = { .type = NLA_U32 },
 301 /*
 302         [IFLA_QDISC],
 303         [IFLA_STATS],
 304         [IFLA_COST],
 305         [IFLA_PRIORITY],
 306 */
 307         [IFLA_MASTER]           = { .type = NLA_U32 },
 308 /*
 309         [IFLA_WIRELESS],
 310 */
 311         [IFLA_PROTINFO]         = { .type = NLA_UNION, .type_system_union = &rtnl_prot_info_type_system_union },
 312         [IFLA_TXQLEN]           = { .type = NLA_U32 },
 313 /*
 314         [IFLA_MAP]              = { .len = sizeof(struct rtnl_link_ifmap) },
 315 */
 316         [IFLA_WEIGHT]           = { .type = NLA_U32 },
 317         [IFLA_OPERSTATE]        = { .type = NLA_U8 },
 318         [IFLA_LINKMODE]         = { .type = NLA_U8 },
 319         [IFLA_LINKINFO]         = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
 320         [IFLA_NET_NS_PID]       = { .type = NLA_U32 },
 321         [IFLA_IFALIAS]          = { .type = NLA_STRING, .size = IFALIASZ - 1 },
 322 /*
 323         [IFLA_NUM_VF],
 324         [IFLA_VFINFO_LIST]      = {. type = NLA_NESTED, },
 325         [IFLA_STATS64],
 326         [IFLA_VF_PORTS]         = { .type = NLA_NESTED },
 327         [IFLA_PORT_SELF]        = { .type = NLA_NESTED },
 328 */
 329         [IFLA_AF_SPEC]          = { .type = NLA_NESTED, .type_system = &rtnl_af_spec_type_system },
 330 /*
 331         [IFLA_VF_PORTS],
 332         [IFLA_PORT_SELF],
 333         [IFLA_AF_SPEC],
 334 */
 335         [IFLA_GROUP]            = { .type = NLA_U32 },
 336         [IFLA_NET_NS_FD]        = { .type = NLA_U32 },
 337         [IFLA_EXT_MASK]         = { .type = NLA_U32 },
 338         [IFLA_PROMISCUITY]      = { .type = NLA_U32 },
 339         [IFLA_NUM_TX_QUEUES]    = { .type = NLA_U32 },
 340         [IFLA_NUM_RX_QUEUES]    = { .type = NLA_U32 },
 341         [IFLA_CARRIER]          = { .type = NLA_U8 },
 342 /*
 343         [IFLA_PHYS_PORT_ID]     = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
 344 */
 345 };
 346
 347 static const NLTypeSystem rtnl_link_type_system = {
 348         .max = ELEMENTSOF(rtnl_link_types) - 1,
 349         .types = rtnl_link_types,
 350 };
 351
 352 static const NLType rtnl_address_types[IFA_MAX + 1] = {
 353         [IFA_ADDRESS]           = { .type = NLA_IN_ADDR },
 354         [IFA_LOCAL]             = { .type = NLA_IN_ADDR },
 355         [IFA_LABEL]             = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
 356         [IFA_BROADCAST]         = { .type = NLA_IN_ADDR }, /* 6? */
 357         [IFA_CACHEINFO]         = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
 358 /*
 359         [IFA_ANYCAST],
 360         [IFA_MULTICAST],
 361 */
 362 #ifdef IFA_FLAGS
 363         [IFA_FLAGS]             = { .type = NLA_U32 },
 364 #endif
 365 };
 366
 367 static const NLTypeSystem rtnl_address_type_system = {
 368         .max = ELEMENTSOF(rtnl_address_types) - 1,
 369         .types = rtnl_address_types,
 370 };
 371
 372 static const NLType rtnl_route_types[RTA_MAX + 1] = {
 373         [RTA_DST]               = { .type = NLA_IN_ADDR }, /* 6? */
 374         [RTA_SRC]               = { .type = NLA_IN_ADDR }, /* 6? */
 375         [RTA_IIF]               = { .type = NLA_U32 },
 376         [RTA_OIF]               = { .type = NLA_U32 },
 377         [RTA_GATEWAY]           = { .type = NLA_IN_ADDR },
 378         [RTA_PRIORITY]          = { .type = NLA_U32 },
 379         [RTA_PREFSRC]           = { .type = NLA_IN_ADDR }, /* 6? */
 380 /*
 381         [RTA_METRICS]           = { .type = NLA_NESTED },
 382         [RTA_MULTIPATH]         = { .len = sizeof(struct rtnexthop) },
 383 */
 384         [RTA_FLOW]              = { .type = NLA_U32 }, /* 6? */
 385 /*
 386         RTA_CACHEINFO,
 387         RTA_TABLE,
 388         RTA_MARK,
 389         RTA_MFC_STATS,
 390 */
 391 };
 392
 393 static const NLTypeSystem rtnl_route_type_system = {
 394         .max = ELEMENTSOF(rtnl_route_types) - 1,
 395         .types = rtnl_route_types,
 396 };
 397
 398 static const NLType rtnl_neigh_types[NDA_MAX + 1] = {
 399         [NDA_DST]               = { .type = NLA_IN_ADDR },
 400         [NDA_LLADDR]            = { .type = NLA_ETHER_ADDR },
 401         [NDA_CACHEINFO]         = { .type = NLA_CACHE_INFO, .size = sizeof(struct nda_cacheinfo) },
 402         [NDA_PROBES]            = { .type = NLA_U32 },
 403         [NDA_VLAN]              = { .type = NLA_U16 },
 404         [NDA_PORT]              = { .type = NLA_U16 },
 405         [NDA_VNI]               = { .type = NLA_U32 },
 406         [NDA_IFINDEX]           = { .type = NLA_U32 },
 407 };
 408
 409 static const NLTypeSystem rtnl_neigh_type_system = {
 410         .max = ELEMENTSOF(rtnl_neigh_types) - 1,
 411         .types = rtnl_neigh_types,
 412 };
 413
 414 static const NLType rtnl_types[RTM_MAX + 1] = {
 415         [NLMSG_ERROR]  = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
 416         [RTM_NEWLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 417         [RTM_DELLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 418         [RTM_GETLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 419         [RTM_SETLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 420         [RTM_NEWADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 421         [RTM_DELADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 422         [RTM_GETADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 423         [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 424         [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 425         [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 426         [RTM_NEWNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 427         [RTM_DELNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 428         [RTM_GETNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 429 };
 430
 431 const NLTypeSystem rtnl_type_system = {
 432         .max = ELEMENTSOF(rtnl_types) - 1,
 433         .types = rtnl_types,
 434 };
 435
 436 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
 437         const NLType *nl_type;
 438
 439         assert(ret);
 440
 441         if (!type_system)
 442                 type_system = &rtnl_type_system;
 443
 444         assert(type_system->types);
 445
 446         if (type > type_system->max)
 447                 return -ENOTSUP;
 448
 449         nl_type = &type_system->types[type];
 450
 451         if (nl_type->type == NLA_UNSPEC)
 452                 return -ENOTSUP;
 453
 454         *ret = nl_type;
 455
 456         return 0;
 457 }
 458
 459 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
 460         const NLType *nl_type;
 461         int r;
 462
 463         assert(ret);
 464
 465         r = type_system_get_type(type_system, &nl_type, type);
 466         if (r < 0)
 467                 return r;
 468
 469         assert_return(nl_type->type == NLA_NESTED, -EINVAL);
 470
 471         assert(nl_type->type_system);
 472
 473         *ret = nl_type->type_system;
 474
 475         return 0;
 476 }
 477
 478 int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
 479         const NLType *nl_type;
 480         int r;
 481
 482         assert(ret);
 483
 484         r = type_system_get_type(type_system, &nl_type, type);
 485         if (r < 0)
 486                 return r;
 487
 488         assert_return(nl_type->type == NLA_UNION, -EINVAL);
 489
 490         assert(nl_type->type_system_union);
 491
 492         *ret = nl_type->type_system_union;
 493
 494         return 0;
 495 }
 496
 497 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
 498         int type;
 499
 500         assert(type_system_union);
 501         assert_return(type_system_union->match_type == NL_MATCH_SIBLING, -EINVAL);
 502         assert(type_system_union->lookup);
 503         assert(type_system_union->type_systems);
 504         assert(ret);
 505         assert(key);
 506
 507         type = type_system_union->lookup(key);
 508         if (type < 0)
 509                 return -ENOTSUP;
 510
 511         assert(type < type_system_union->num);
 512
 513         *ret = &type_system_union->type_systems[type];
 514
 515         return 0;
 516 }
 517
 518 int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
 519         const NLTypeSystem *type_system;
 520
 521         assert(type_system_union);
 522         assert(type_system_union->type_systems);
 523         assert(ret);
 524         assert_return(type_system_union->match_type == NL_MATCH_PROTOCOL, -EINVAL);
 525         assert_return(protocol < type_system_union->num, -EINVAL);
 526
 527         if (protocol >= type_system_union->num)
 528                 return -ENOTSUP;
 529
 530         type_system = &type_system_union->type_systems[protocol];
 531
 532         if (!type_system)
 533                 return -ENOTSUP;
 534
 535         *ret = type_system;
 536
 537         return 0;
 538 }