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_type_systems[AF_MAX] = {
 282         [AF_INET6] =    { .max = ELEMENTSOF(rtnl_af_spec_inet6_types) - 1,
 283                           .types = rtnl_af_spec_inet6_types },
 284 };
 285
 286 static const NLTypeSystemUnion rtnl_af_spec_type_system_union = {
 287         .num = AF_MAX,
 288         .type_systems = rtnl_af_spec_type_systems,
 289         .match_type = NL_MATCH_PROTOCOL,
 290 };
 291
 292 static const NLType rtnl_link_types[IFLA_MAX + 1 ] = {
 293         [IFLA_ADDRESS]          = { .type = NLA_ETHER_ADDR, },
 294         [IFLA_BROADCAST]        = { .type = NLA_ETHER_ADDR, },
 295         [IFLA_IFNAME]           = { .type = NLA_STRING, .size = IFNAMSIZ - 1, },
 296         [IFLA_MTU]              = { .type = NLA_U32 },
 297         [IFLA_LINK]             = { .type = NLA_U32 },
 298 /*
 299         [IFLA_QDISC],
 300         [IFLA_STATS],
 301         [IFLA_COST],
 302         [IFLA_PRIORITY],
 303 */
 304         [IFLA_MASTER]           = { .type = NLA_U32 },
 305 /*
 306         [IFLA_WIRELESS],
 307 */
 308         [IFLA_PROTINFO]         = { .type = NLA_UNION, .type_system_union = &rtnl_prot_info_type_system_union },
 309         [IFLA_TXQLEN]           = { .type = NLA_U32 },
 310 /*
 311         [IFLA_MAP]              = { .len = sizeof(struct rtnl_link_ifmap) },
 312 */
 313         [IFLA_WEIGHT]           = { .type = NLA_U32 },
 314         [IFLA_OPERSTATE]        = { .type = NLA_U8 },
 315         [IFLA_LINKMODE]         = { .type = NLA_U8 },
 316         [IFLA_LINKINFO]         = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system },
 317         [IFLA_NET_NS_PID]       = { .type = NLA_U32 },
 318         [IFLA_IFALIAS]          = { .type = NLA_STRING, .size = IFALIASZ - 1 },
 319 /*
 320         [IFLA_NUM_VF],
 321         [IFLA_VFINFO_LIST]      = {. type = NLA_NESTED, },
 322         [IFLA_STATS64],
 323         [IFLA_VF_PORTS]         = { .type = NLA_NESTED },
 324         [IFLA_PORT_SELF]        = { .type = NLA_NESTED },
 325 */
 326         [IFLA_AF_SPEC]          = { .type = NLA_NESTED, .type_system_union = &rtnl_af_spec_type_system_union },
 327 /*
 328         [IFLA_VF_PORTS],
 329         [IFLA_PORT_SELF],
 330         [IFLA_AF_SPEC],
 331 */
 332         [IFLA_GROUP]            = { .type = NLA_U32 },
 333         [IFLA_NET_NS_FD]        = { .type = NLA_U32 },
 334         [IFLA_EXT_MASK]         = { .type = NLA_U32 },
 335         [IFLA_PROMISCUITY]      = { .type = NLA_U32 },
 336         [IFLA_NUM_TX_QUEUES]    = { .type = NLA_U32 },
 337         [IFLA_NUM_RX_QUEUES]    = { .type = NLA_U32 },
 338         [IFLA_CARRIER]          = { .type = NLA_U8 },
 339 /*
 340         [IFLA_PHYS_PORT_ID]     = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
 341 */
 342 };
 343
 344 static const NLTypeSystem rtnl_link_type_system = {
 345         .max = ELEMENTSOF(rtnl_link_types) - 1,
 346         .types = rtnl_link_types,
 347 };
 348
 349 static const NLType rtnl_address_types[IFA_MAX + 1] = {
 350         [IFA_ADDRESS]           = { .type = NLA_IN_ADDR },
 351         [IFA_LOCAL]             = { .type = NLA_IN_ADDR },
 352         [IFA_LABEL]             = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
 353         [IFA_BROADCAST]         = { .type = NLA_IN_ADDR }, /* 6? */
 354         [IFA_CACHEINFO]         = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
 355 /*
 356         [IFA_ANYCAST],
 357         [IFA_MULTICAST],
 358 */
 359 #ifdef IFA_FLAGS
 360         [IFA_FLAGS]             = { .type = NLA_U32 },
 361 #endif
 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_ERROR]  = { .type = NLA_META, .size = sizeof(struct nlmsgerr) },
 413         [RTM_NEWLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 414         [RTM_DELLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 415         [RTM_GETLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 416         [RTM_SETLINK]  = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
 417         [RTM_NEWADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 418         [RTM_DELADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 419         [RTM_GETADDR]  = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
 420         [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 421         [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 422         [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
 423         [RTM_NEWNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 424         [RTM_DELNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 425         [RTM_GETNEIGH] = { .type = NLA_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
 426 };
 427
 428 const NLTypeSystem rtnl_type_system = {
 429         .max = ELEMENTSOF(rtnl_types) - 1,
 430         .types = rtnl_types,
 431 };
 432
 433 int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
 434         const NLType *nl_type;
 435
 436         assert(ret);
 437
 438         if (!type_system)
 439                 type_system = &rtnl_type_system;
 440
 441         assert(type_system->types);
 442
 443         if (type > type_system->max)
 444                 return -ENOTSUP;
 445
 446         nl_type = &type_system->types[type];
 447
 448         if (nl_type->type == NLA_UNSPEC)
 449                 return -ENOTSUP;
 450
 451         *ret = nl_type;
 452
 453         return 0;
 454 }
 455
 456 int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
 457         const NLType *nl_type;
 458         int r;
 459
 460         assert(ret);
 461
 462         r = type_system_get_type(type_system, &nl_type, type);
 463         if (r < 0)
 464                 return r;
 465
 466         assert_return(nl_type->type == NLA_NESTED, -EINVAL);
 467
 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_return(nl_type->type == NLA_UNION, -EINVAL);
 486
 487         assert(nl_type->type_system_union);
 488
 489         *ret = nl_type->type_system_union;
 490
 491         return 0;
 492 }
 493
 494 int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
 495         int type;
 496
 497         assert(type_system_union);
 498         assert_return(type_system_union->match_type == NL_MATCH_SIBLING, -EINVAL);
 499         assert(type_system_union->lookup);
 500         assert(type_system_union->type_systems);
 501         assert(ret);
 502         assert(key);
 503
 504         type = type_system_union->lookup(key);
 505         if (type < 0)
 506                 return -ENOTSUP;
 507
 508         assert(type < type_system_union->num);
 509
 510         *ret = &type_system_union->type_systems[type];
 511
 512         return 0;
 513 }
 514
 515 int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
 516         const NLTypeSystem *type_system;
 517
 518         assert(type_system_union);
 519         assert(type_system_union->type_systems);
 520         assert(ret);
 521         assert_return(type_system_union->match_type == NL_MATCH_PROTOCOL, -EINVAL);
 522         assert_return(protocol < type_system_union->num, -EINVAL);
 523
 524         if (protocol >= type_system_union->num)
 525                 return -ENOTSUP;
 526
 527         type_system = &type_system_union->type_systems[protocol];
 528
 529         if (!type_system)
 530                 return -ENOTSUP;
 531
 532         *ret = type_system;
 533
 534         return 0;
 535 }