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Systemd/src/libsystemd/sd-netlink/netlink-types.c
Susant Sahani d6df583c87 networkd: introduce vxcan netdev. (#7150) 
Similar to the virtual ethernet driver veth, vxcan implements a
local CAN traffic tunnel between two virtual CAN network devices.
When creating a vxcan, two vxcan devices are created as pair
When one end receives the packet it appears on its pair and vice
versa. The vxcan can be used for cross namespace communication.
2017-11-22 08:23:22 +01:00

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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2014 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdint.h>
#include <sys/socket.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/can/netlink.h>
#include <linux/fib_rules.h>
#include <linux/in6.h>
#include <linux/veth.h>
#include <linux/if_bridge.h>
#include <linux/if_addr.h>
#include <linux/if_addrlabel.h>
#include <linux/if.h>
#include <linux/ip.h>
#include <linux/if_addr.h>
#include <linux/if_bridge.h>
#include <linux/if_link.h>
#include <linux/if_tunnel.h>
#include <linux/fib_rules.h>
#if HAVE_VXCAN_INFO_PEER
#include <linux/can/vxcan.h>
#endif
#include "macro.h"
#include "missing.h"
#include "netlink-types.h"
#include "string-table.h"
#include "util.h"
/* Maximum ARP IP target defined in kernel */
#define BOND_MAX_ARP_TARGETS 16
typedef enum {
BOND_ARP_TARGETS_0,
BOND_ARP_TARGETS_1,
BOND_ARP_TARGETS_2,
BOND_ARP_TARGETS_3,
BOND_ARP_TARGETS_4,
BOND_ARP_TARGETS_5,
BOND_ARP_TARGETS_6,
BOND_ARP_TARGETS_7,
BOND_ARP_TARGETS_8,
BOND_ARP_TARGETS_9,
BOND_ARP_TARGETS_10,
BOND_ARP_TARGETS_11,
BOND_ARP_TARGETS_12,
BOND_ARP_TARGETS_13,
BOND_ARP_TARGETS_14,
BOND_ARP_TARGETS_MAX = BOND_MAX_ARP_TARGETS,
} BondArpTargets;
struct NLType {
uint16_t type;
size_t size;
const NLTypeSystem *type_system;
const NLTypeSystemUnion *type_system_union;
};
struct NLTypeSystem {
uint16_t count;
const NLType *types;
};
static const NLTypeSystem rtnl_link_type_system;
static const NLType empty_types[1] = {
/* fake array to avoid .types==NULL, which denotes invalid type-systems */
};
static const NLTypeSystem empty_type_system = {
.count = 0,
.types = empty_types,
};
static const NLType rtnl_link_info_data_veth_types[] = {
[VETH_INFO_PEER] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
};
static const NLType rtnl_link_info_data_vxcan_types[] = {
[VXCAN_INFO_PEER] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
};
static const NLType rtnl_link_info_data_ipvlan_types[] = {
[IFLA_IPVLAN_MODE] = { .type = NETLINK_TYPE_U16 },
};
static const NLType rtnl_link_info_data_macvlan_types[] = {
[IFLA_MACVLAN_MODE] = { .type = NETLINK_TYPE_U32 },
[IFLA_MACVLAN_FLAGS] = { .type = NETLINK_TYPE_U16 },
};
static const NLType rtnl_link_info_data_bridge_types[] = {
[IFLA_BR_FORWARD_DELAY] = { .type = NETLINK_TYPE_U32 },
[IFLA_BR_HELLO_TIME] = { .type = NETLINK_TYPE_U32 },
[IFLA_BR_MAX_AGE] = { .type = NETLINK_TYPE_U32 },
[IFLA_BR_AGEING_TIME] = { .type = NETLINK_TYPE_U32 },
[IFLA_BR_STP_STATE] = { .type = NETLINK_TYPE_U32 },
[IFLA_BR_PRIORITY] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_VLAN_FILTERING] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_VLAN_PROTOCOL] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_GROUP_FWD_MASK] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_ROOT_PORT] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_ROOT_PATH_COST] = { .type = NETLINK_TYPE_U32 },
[IFLA_BR_TOPOLOGY_CHANGE] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_TOPOLOGY_CHANGE_DETECTED] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_HELLO_TIMER] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_TCN_TIMER] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_TOPOLOGY_CHANGE_TIMER] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_GC_TIMER] = { .type = NETLINK_TYPE_U64 },
[IFLA_BR_GROUP_ADDR] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_FDB_FLUSH] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_MCAST_ROUTER] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_MCAST_SNOOPING] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_MCAST_QUERIER] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NETLINK_TYPE_U32 },
[IFLA_BR_MCAST_HASH_MAX] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NETLINK_TYPE_U32 },
[IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NETLINK_TYPE_U16 },
[IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NETLINK_TYPE_U64 },
[IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NETLINK_TYPE_U64 },
[IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NETLINK_TYPE_U64 },
[IFLA_BR_MCAST_QUERY_INTVL] = { .type = NETLINK_TYPE_U64 },
[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NETLINK_TYPE_U64 },
[IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NETLINK_TYPE_U64 },
[IFLA_BR_NF_CALL_IPTABLES] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_NF_CALL_IP6TABLES] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_NF_CALL_ARPTABLES] = { .type = NETLINK_TYPE_U8 },
[IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NETLINK_TYPE_U16 },
};
static const NLType rtnl_link_info_data_vlan_types[] = {
[IFLA_VLAN_ID] = { .type = NETLINK_TYPE_U16 },
/*
[IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) },
[IFLA_VLAN_EGRESS_QOS] = { .type = NETLINK_TYPE_NESTED },
[IFLA_VLAN_INGRESS_QOS] = { .type = NETLINK_TYPE_NESTED },
*/
[IFLA_VLAN_PROTOCOL] = { .type = NETLINK_TYPE_U16 },
};
static const NLType rtnl_link_info_data_vxlan_types[] = {
[IFLA_VXLAN_ID] = { .type = NETLINK_TYPE_U32 },
[IFLA_VXLAN_GROUP] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_VXLAN_LINK] = { .type = NETLINK_TYPE_U32 },
[IFLA_VXLAN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_VXLAN_TTL] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_TOS] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_LEARNING] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_AGEING] = { .type = NETLINK_TYPE_U32 },
[IFLA_VXLAN_LIMIT] = { .type = NETLINK_TYPE_U32 },
[IFLA_VXLAN_PORT_RANGE] = { .type = NETLINK_TYPE_U32},
[IFLA_VXLAN_PROXY] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_RSC] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_L2MISS] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_L3MISS] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_PORT] = { .type = NETLINK_TYPE_U16 },
[IFLA_VXLAN_GROUP6] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_VXLAN_LOCAL6] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_VXLAN_UDP_CSUM] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_UDP_ZERO_CSUM6_TX] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_UDP_ZERO_CSUM6_RX] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_REMCSUM_TX] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_REMCSUM_RX] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_GBP] = { .type = NETLINK_TYPE_FLAG },
[IFLA_VXLAN_REMCSUM_NOPARTIAL] = { .type = NETLINK_TYPE_FLAG },
[IFLA_VXLAN_COLLECT_METADATA] = { .type = NETLINK_TYPE_U8 },
[IFLA_VXLAN_LABEL] = { .type = NETLINK_TYPE_U32 },
[IFLA_VXLAN_GPE] = { .type = NETLINK_TYPE_FLAG },
};
static const NLType rtnl_bond_arp_target_types[] = {
[BOND_ARP_TARGETS_0] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_1] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_2] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_3] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_4] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_5] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_6] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_7] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_8] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_9] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_10] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_11] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_12] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_13] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_14] = { .type = NETLINK_TYPE_U32 },
[BOND_ARP_TARGETS_MAX] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem rtnl_bond_arp_type_system = {
.count = ELEMENTSOF(rtnl_bond_arp_target_types),
.types = rtnl_bond_arp_target_types,
};
static const NLType rtnl_link_info_data_bond_types[] = {
[IFLA_BOND_MODE] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_ACTIVE_SLAVE] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_MIIMON] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_UPDELAY] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_DOWNDELAY] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_USE_CARRIER] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_ARP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_ARP_IP_TARGET] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_bond_arp_type_system },
[IFLA_BOND_ARP_VALIDATE] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_ARP_ALL_TARGETS] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_PRIMARY] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_PRIMARY_RESELECT] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_FAIL_OVER_MAC] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_XMIT_HASH_POLICY] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_RESEND_IGMP] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_NUM_PEER_NOTIF] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_MIN_LINKS] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_LP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NETLINK_TYPE_U32 },
[IFLA_BOND_AD_LACP_RATE] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_AD_SELECT] = { .type = NETLINK_TYPE_U8 },
[IFLA_BOND_AD_INFO] = { .type = NETLINK_TYPE_NESTED },
};
static const NLType rtnl_link_info_data_iptun_types[] = {
[IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 },
[IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 },
[IFLA_IPTUN_TOS] = { .type = NETLINK_TYPE_U8 },
[IFLA_IPTUN_PMTUDISC] = { .type = NETLINK_TYPE_U8 },
[IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U16 },
[IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 },
[IFLA_IPTUN_6RD_PREFIX] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NETLINK_TYPE_U32 },
[IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NETLINK_TYPE_U16 },
[IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NETLINK_TYPE_U16 },
[IFLA_IPTUN_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
[IFLA_IPTUN_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 },
[IFLA_IPTUN_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 },
[IFLA_IPTUN_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 },
};
static const NLType rtnl_link_info_data_ipgre_types[] = {
[IFLA_GRE_LINK] = { .type = NETLINK_TYPE_U32 },
[IFLA_GRE_IFLAGS] = { .type = NETLINK_TYPE_U16 },
[IFLA_GRE_OFLAGS] = { .type = NETLINK_TYPE_U16 },
[IFLA_GRE_IKEY] = { .type = NETLINK_TYPE_U32 },
[IFLA_GRE_OKEY] = { .type = NETLINK_TYPE_U32 },
[IFLA_GRE_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_GRE_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_GRE_TTL] = { .type = NETLINK_TYPE_U8 },
[IFLA_GRE_TOS] = { .type = NETLINK_TYPE_U8 },
[IFLA_GRE_PMTUDISC] = { .type = NETLINK_TYPE_U8 },
[IFLA_GRE_FLOWINFO] = { .type = NETLINK_TYPE_U32 },
[IFLA_GRE_FLAGS] = { .type = NETLINK_TYPE_U32 },
[IFLA_GRE_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
[IFLA_GRE_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 },
[IFLA_GRE_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 },
[IFLA_GRE_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 },
};
static const NLType rtnl_link_info_data_ipvti_types[] = {
[IFLA_VTI_LINK] = { .type = NETLINK_TYPE_U32 },
[IFLA_VTI_IKEY] = { .type = NETLINK_TYPE_U32 },
[IFLA_VTI_OKEY] = { .type = NETLINK_TYPE_U32 },
[IFLA_VTI_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_VTI_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
};
static const NLType rtnl_link_info_data_ip6tnl_types[] = {
[IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 },
[IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 },
[IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U32 },
[IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 },
[IFLA_IPTUN_ENCAP_LIMIT] = { .type = NETLINK_TYPE_U8 },
[IFLA_IPTUN_FLOWINFO] = { .type = NETLINK_TYPE_U32 },
};
static const NLType rtnl_link_info_data_vrf_types[] = {
[IFLA_VRF_TABLE] = { .type = NETLINK_TYPE_U32 },
};
static const NLType rtnl_link_info_data_geneve_types[] = {
[IFLA_GENEVE_ID] = { .type = NETLINK_TYPE_U32 },
[IFLA_GENEVE_TTL] = { .type = NETLINK_TYPE_U8 },
[IFLA_GENEVE_TOS] = { .type = NETLINK_TYPE_U8 },
[IFLA_GENEVE_PORT] = { .type = NETLINK_TYPE_U16 },
[IFLA_GENEVE_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_GENEVE_REMOTE6] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_GENEVE_UDP_CSUM] = { .type = NETLINK_TYPE_U8 },
[IFLA_GENEVE_UDP_ZERO_CSUM6_TX] = { .type = NETLINK_TYPE_U8 },
[IFLA_GENEVE_UDP_ZERO_CSUM6_RX] = { .type = NETLINK_TYPE_U8 },
[IFLA_GENEVE_LABEL] = { .type = NETLINK_TYPE_U32 },
};
/* these strings must match the .kind entries in the kernel */
static const char* const nl_union_link_info_data_table[] = {
[NL_UNION_LINK_INFO_DATA_BOND] = "bond",
[NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge",
[NL_UNION_LINK_INFO_DATA_VLAN] = "vlan",
[NL_UNION_LINK_INFO_DATA_VETH] = "veth",
[NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy",
[NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan",
[NL_UNION_LINK_INFO_DATA_MACVTAP] = "macvtap",
[NL_UNION_LINK_INFO_DATA_IPVLAN] = "ipvlan",
[NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan",
[NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
[NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
[NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = "gretap",
[NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = "ip6gre",
[NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = "ip6gretap",
[NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
[NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
[NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = "vti6",
[NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = "ip6tnl",
[NL_UNION_LINK_INFO_DATA_VRF] = "vrf",
[NL_UNION_LINK_INFO_DATA_VCAN] = "vcan",
[NL_UNION_LINK_INFO_DATA_GENEVE] = "geneve",
[NL_UNION_LINK_INFO_DATA_VXCAN] = "vxcan",
};
DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
static const NLTypeSystem rtnl_link_info_data_type_systems[] = {
[NL_UNION_LINK_INFO_DATA_BOND] = { .count = ELEMENTSOF(rtnl_link_info_data_bond_types),
.types = rtnl_link_info_data_bond_types },
[NL_UNION_LINK_INFO_DATA_BRIDGE] = { .count = ELEMENTSOF(rtnl_link_info_data_bridge_types),
.types = rtnl_link_info_data_bridge_types },
[NL_UNION_LINK_INFO_DATA_VLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vlan_types),
.types = rtnl_link_info_data_vlan_types },
[NL_UNION_LINK_INFO_DATA_VETH] = { .count = ELEMENTSOF(rtnl_link_info_data_veth_types),
.types = rtnl_link_info_data_veth_types },
[NL_UNION_LINK_INFO_DATA_MACVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types),
.types = rtnl_link_info_data_macvlan_types },
[NL_UNION_LINK_INFO_DATA_MACVTAP] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types),
.types = rtnl_link_info_data_macvlan_types },
[NL_UNION_LINK_INFO_DATA_IPVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvlan_types),
.types = rtnl_link_info_data_ipvlan_types },
[NL_UNION_LINK_INFO_DATA_VXLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vxlan_types),
.types = rtnl_link_info_data_vxlan_types },
[NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types),
.types = rtnl_link_info_data_iptun_types },
[NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
.types = rtnl_link_info_data_ipgre_types },
[NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
.types = rtnl_link_info_data_ipgre_types },
[NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
.types = rtnl_link_info_data_ipgre_types },
[NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types),
.types = rtnl_link_info_data_ipgre_types },
[NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types),
.types = rtnl_link_info_data_iptun_types },
[NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types),
.types = rtnl_link_info_data_ipvti_types },
[NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types),
.types = rtnl_link_info_data_ipvti_types },
[NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ip6tnl_types),
.types = rtnl_link_info_data_ip6tnl_types },
[NL_UNION_LINK_INFO_DATA_VRF] = { .count = ELEMENTSOF(rtnl_link_info_data_vrf_types),
.types = rtnl_link_info_data_vrf_types },
[NL_UNION_LINK_INFO_DATA_GENEVE] = { .count = ELEMENTSOF(rtnl_link_info_data_geneve_types),
.types = rtnl_link_info_data_geneve_types },
[NL_UNION_LINK_INFO_DATA_VXCAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vxcan_types),
.types = rtnl_link_info_data_vxcan_types },
};
static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
.num = _NL_UNION_LINK_INFO_DATA_MAX,
.lookup = nl_union_link_info_data_from_string,
.type_systems = rtnl_link_info_data_type_systems,
.match_type = NL_MATCH_SIBLING,
.match = IFLA_INFO_KIND,
};
static const NLType rtnl_link_info_types[] = {
[IFLA_INFO_KIND] = { .type = NETLINK_TYPE_STRING },
[IFLA_INFO_DATA] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_link_info_data_type_system_union},
/*
[IFLA_INFO_XSTATS],
[IFLA_INFO_SLAVE_KIND] = { .type = NETLINK_TYPE_STRING },
[IFLA_INFO_SLAVE_DATA] = { .type = NETLINK_TYPE_NESTED },
*/
};
static const NLTypeSystem rtnl_link_info_type_system = {
.count = ELEMENTSOF(rtnl_link_info_types),
.types = rtnl_link_info_types,
};
static const struct NLType rtnl_prot_info_bridge_port_types[] = {
[IFLA_BRPORT_STATE] = { .type = NETLINK_TYPE_U8 },
[IFLA_BRPORT_COST] = { .type = NETLINK_TYPE_U32 },
[IFLA_BRPORT_PRIORITY] = { .type = NETLINK_TYPE_U16 },
[IFLA_BRPORT_MODE] = { .type = NETLINK_TYPE_U8 },
[IFLA_BRPORT_GUARD] = { .type = NETLINK_TYPE_U8 },
[IFLA_BRPORT_PROTECT] = { .type = NETLINK_TYPE_U8 },
[IFLA_BRPORT_FAST_LEAVE] = { .type = NETLINK_TYPE_U8 },
[IFLA_BRPORT_LEARNING] = { .type = NETLINK_TYPE_U8 },
[IFLA_BRPORT_UNICAST_FLOOD] = { .type = NETLINK_TYPE_U8 },
[IFLA_BRPORT_PROXYARP] = { .type = NETLINK_TYPE_U8 },
[IFLA_BRPORT_LEARNING_SYNC] = { .type = NETLINK_TYPE_U8 },
};
static const NLTypeSystem rtnl_prot_info_type_systems[] = {
[AF_BRIDGE] = { .count = ELEMENTSOF(rtnl_prot_info_bridge_port_types),
.types = rtnl_prot_info_bridge_port_types },
};
static const NLTypeSystemUnion rtnl_prot_info_type_system_union = {
.num = AF_MAX,
.type_systems = rtnl_prot_info_type_systems,
.match_type = NL_MATCH_PROTOCOL,
};
static const struct NLType rtnl_af_spec_inet6_types[] = {
[IFLA_INET6_FLAGS] = { .type = NETLINK_TYPE_U32 },
/*
IFLA_INET6_CONF,
IFLA_INET6_STATS,
IFLA_INET6_MCAST,
IFLA_INET6_CACHEINFO,
IFLA_INET6_ICMP6STATS,
*/
[IFLA_INET6_TOKEN] = { .type = NETLINK_TYPE_IN_ADDR },
[IFLA_INET6_ADDR_GEN_MODE] = { .type = NETLINK_TYPE_U8 },
};
static const NLTypeSystem rtnl_af_spec_inet6_type_system = {
.count = ELEMENTSOF(rtnl_af_spec_inet6_types),
.types = rtnl_af_spec_inet6_types,
};
static const NLType rtnl_af_spec_types[] = {
[AF_INET6] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_inet6_type_system },
};
static const NLTypeSystem rtnl_af_spec_type_system = {
.count = ELEMENTSOF(rtnl_af_spec_types),
.types = rtnl_af_spec_types,
};
static const NLType rtnl_link_types[] = {
[IFLA_ADDRESS] = { .type = NETLINK_TYPE_ETHER_ADDR },
[IFLA_BROADCAST] = { .type = NETLINK_TYPE_ETHER_ADDR },
[IFLA_IFNAME] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
[IFLA_MTU] = { .type = NETLINK_TYPE_U32 },
[IFLA_LINK] = { .type = NETLINK_TYPE_U32 },
/*
[IFLA_QDISC],
[IFLA_STATS],
[IFLA_COST],
[IFLA_PRIORITY],
*/
[IFLA_MASTER] = { .type = NETLINK_TYPE_U32 },
/*
[IFLA_WIRELESS],
*/
[IFLA_PROTINFO] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_prot_info_type_system_union },
[IFLA_TXQLEN] = { .type = NETLINK_TYPE_U32 },
/*
[IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
*/
[IFLA_WEIGHT] = { .type = NETLINK_TYPE_U32 },
[IFLA_OPERSTATE] = { .type = NETLINK_TYPE_U8 },
[IFLA_LINKMODE] = { .type = NETLINK_TYPE_U8 },
[IFLA_LINKINFO] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_info_type_system },
[IFLA_NET_NS_PID] = { .type = NETLINK_TYPE_U32 },
[IFLA_IFALIAS] = { .type = NETLINK_TYPE_STRING, .size = IFALIASZ - 1 },
/*
[IFLA_NUM_VF],
[IFLA_VFINFO_LIST] = {. type = NETLINK_TYPE_NESTED, },
[IFLA_STATS64],
[IFLA_VF_PORTS] = { .type = NETLINK_TYPE_NESTED },
[IFLA_PORT_SELF] = { .type = NETLINK_TYPE_NESTED },
*/
[IFLA_AF_SPEC] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_type_system },
/*
[IFLA_VF_PORTS],
[IFLA_PORT_SELF],
[IFLA_AF_SPEC],
*/
[IFLA_GROUP] = { .type = NETLINK_TYPE_U32 },
[IFLA_NET_NS_FD] = { .type = NETLINK_TYPE_U32 },
[IFLA_EXT_MASK] = { .type = NETLINK_TYPE_U32 },
[IFLA_PROMISCUITY] = { .type = NETLINK_TYPE_U32 },
[IFLA_NUM_TX_QUEUES] = { .type = NETLINK_TYPE_U32 },
[IFLA_NUM_RX_QUEUES] = { .type = NETLINK_TYPE_U32 },
[IFLA_CARRIER] = { .type = NETLINK_TYPE_U8 },
/*
[IFLA_PHYS_PORT_ID] = { .type = NETLINK_TYPE_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
*/
};
static const NLTypeSystem rtnl_link_type_system = {
.count = ELEMENTSOF(rtnl_link_types),
.types = rtnl_link_types,
};
/* IFA_FLAGS was defined in kernel 3.14, but we still support older
* kernels where IFA_MAX is lower. */
static const NLType rtnl_address_types[] = {
[IFA_ADDRESS] = { .type = NETLINK_TYPE_IN_ADDR },
[IFA_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR },
[IFA_LABEL] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
[IFA_BROADCAST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
[IFA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
/*
[IFA_ANYCAST],
[IFA_MULTICAST],
*/
[IFA_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem rtnl_address_type_system = {
.count = ELEMENTSOF(rtnl_address_types),
.types = rtnl_address_types,
};
/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
static const NLType rtnl_route_metrics_types[] = {
[RTAX_MTU] = { .type = NETLINK_TYPE_U32 },
[RTAX_WINDOW] = { .type = NETLINK_TYPE_U32 },
[RTAX_RTT] = { .type = NETLINK_TYPE_U32 },
[RTAX_RTTVAR] = { .type = NETLINK_TYPE_U32 },
[RTAX_SSTHRESH] = { .type = NETLINK_TYPE_U32 },
[RTAX_CWND] = { .type = NETLINK_TYPE_U32 },
[RTAX_ADVMSS] = { .type = NETLINK_TYPE_U32 },
[RTAX_REORDERING] = { .type = NETLINK_TYPE_U32 },
[RTAX_HOPLIMIT] = { .type = NETLINK_TYPE_U32 },
[RTAX_INITCWND] = { .type = NETLINK_TYPE_U32 },
[RTAX_FEATURES] = { .type = NETLINK_TYPE_U32 },
[RTAX_RTO_MIN] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem rtnl_route_metrics_type_system = {
.count = ELEMENTSOF(rtnl_route_metrics_types),
.types = rtnl_route_metrics_types,
};
static const NLType rtnl_route_types[] = {
[RTA_DST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
[RTA_SRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
[RTA_IIF] = { .type = NETLINK_TYPE_U32 },
[RTA_OIF] = { .type = NETLINK_TYPE_U32 },
[RTA_GATEWAY] = { .type = NETLINK_TYPE_IN_ADDR },
[RTA_PRIORITY] = { .type = NETLINK_TYPE_U32 },
[RTA_PREFSRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */
[RTA_METRICS] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_metrics_type_system},
/* [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) },
*/
[RTA_FLOW] = { .type = NETLINK_TYPE_U32 }, /* 6? */
/*
RTA_CACHEINFO,
RTA_TABLE,
RTA_MARK,
RTA_MFC_STATS,
RTA_VIA,
RTA_NEWDST,
*/
[RTA_PREF] = { .type = NETLINK_TYPE_U8 },
};
static const NLTypeSystem rtnl_route_type_system = {
.count = ELEMENTSOF(rtnl_route_types),
.types = rtnl_route_types,
};
static const NLType rtnl_neigh_types[] = {
[NDA_DST] = { .type = NETLINK_TYPE_IN_ADDR },
[NDA_LLADDR] = { .type = NETLINK_TYPE_ETHER_ADDR },
[NDA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct nda_cacheinfo) },
[NDA_PROBES] = { .type = NETLINK_TYPE_U32 },
[NDA_VLAN] = { .type = NETLINK_TYPE_U16 },
[NDA_PORT] = { .type = NETLINK_TYPE_U16 },
[NDA_VNI] = { .type = NETLINK_TYPE_U32 },
[NDA_IFINDEX] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem rtnl_neigh_type_system = {
.count = ELEMENTSOF(rtnl_neigh_types),
.types = rtnl_neigh_types,
};
static const NLType rtnl_addrlabel_types[] = {
[IFAL_ADDRESS] = { .type = NETLINK_TYPE_IN_ADDR, .size = sizeof(struct in6_addr) },
[IFAL_LABEL] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem rtnl_addrlabel_type_system = {
.count = ELEMENTSOF(rtnl_addrlabel_types),
.types = rtnl_addrlabel_types,
};
static const NLType rtnl_routing_policy_rule_types[] = {
[FRA_DST] = { .type = NETLINK_TYPE_IN_ADDR },
[FRA_SRC] = { .type = NETLINK_TYPE_IN_ADDR },
[FRA_IIFNAME] = { .type = NETLINK_TYPE_STRING },
[RTA_OIF] = { .type = NETLINK_TYPE_U32 },
[RTA_GATEWAY] = { .type = NETLINK_TYPE_IN_ADDR },
[FRA_PRIORITY] = { .type = NETLINK_TYPE_U32 },
[FRA_FWMARK] = { .type = NETLINK_TYPE_U32 },
[FRA_FLOW] = { .type = NETLINK_TYPE_U32 },
[FRA_TUN_ID] = { .type = NETLINK_TYPE_U32 },
[FRA_SUPPRESS_IFGROUP] = { .type = NETLINK_TYPE_U32 },
[FRA_SUPPRESS_PREFIXLEN] = { .type = NETLINK_TYPE_U32 },
[FRA_TABLE] = { .type = NETLINK_TYPE_U32 },
[FRA_FWMASK] = { .type = NETLINK_TYPE_U32 },
[FRA_OIFNAME] = { .type = NETLINK_TYPE_STRING },
[FRA_PAD] = { .type = NETLINK_TYPE_U32 },
[FRA_L3MDEV] = { .type = NETLINK_TYPE_U64 },
[FRA_UID_RANGE] = { .size = sizeof(struct fib_rule_uid_range) },
};
static const NLTypeSystem rtnl_routing_policy_rule_type_system = {
.count = ELEMENTSOF(rtnl_routing_policy_rule_types),
.types = rtnl_routing_policy_rule_types,
};
static const NLType rtnl_types[] = {
[NLMSG_DONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = 0 },
[NLMSG_ERROR] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = sizeof(struct nlmsgerr) },
[RTM_NEWLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_DELLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_GETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_SETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_NEWADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_DELADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_GETADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_NEWROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_DELROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_GETROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_NEWNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[RTM_DELNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[RTM_GETNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[RTM_NEWADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
[RTM_DELADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
[RTM_GETADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
[RTM_NEWRULE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_routing_policy_rule_type_system, .size = sizeof(struct rtmsg) },
[RTM_DELRULE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_routing_policy_rule_type_system, .size = sizeof(struct rtmsg) },
[RTM_GETRULE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_routing_policy_rule_type_system, .size = sizeof(struct rtmsg) },
};
const NLTypeSystem type_system_root = {
.count = ELEMENTSOF(rtnl_types),
.types = rtnl_types,
};
uint16_t type_get_type(const NLType *type) {
assert(type);
return type->type;
}
size_t type_get_size(const NLType *type) {
assert(type);
return type->size;
}
void type_get_type_system(const NLType *nl_type, const NLTypeSystem **ret) {
assert(nl_type);
assert(ret);
assert(nl_type->type == NETLINK_TYPE_NESTED);
assert(nl_type->type_system);
*ret = nl_type->type_system;
}
void type_get_type_system_union(const NLType *nl_type, const NLTypeSystemUnion **ret) {
assert(nl_type);
assert(ret);
assert(nl_type->type == NETLINK_TYPE_UNION);
assert(nl_type->type_system_union);
*ret = nl_type->type_system_union;
}
uint16_t type_system_get_count(const NLTypeSystem *type_system) {
assert(type_system);
return type_system->count;
}
int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) {
const NLType *nl_type;
assert(ret);
assert(type_system);
assert(type_system->types);
if (type >= type_system->count)
return -EOPNOTSUPP;
nl_type = &type_system->types[type];
if (nl_type->type == NETLINK_TYPE_UNSPEC)
return -EOPNOTSUPP;
*ret = nl_type;
return 0;
}
int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) {
const NLType *nl_type;
int r;
assert(ret);
r = type_system_get_type(type_system, &nl_type, type);
if (r < 0)
return r;
type_get_type_system(nl_type, ret);
return 0;
}
int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) {
const NLType *nl_type;
int r;
assert(ret);
r = type_system_get_type(type_system, &nl_type, type);
if (r < 0)
return r;
type_get_type_system_union(nl_type, ret);
return 0;
}
int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) {
int type;
assert(type_system_union);
assert(type_system_union->match_type == NL_MATCH_SIBLING);
assert(type_system_union->lookup);
assert(type_system_union->type_systems);
assert(ret);
assert(key);
type = type_system_union->lookup(key);
if (type < 0)
return -EOPNOTSUPP;
assert(type < type_system_union->num);
*ret = &type_system_union->type_systems[type];
return 0;
}
int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
const NLTypeSystem *type_system;
assert(type_system_union);
assert(type_system_union->type_systems);
assert(type_system_union->match_type == NL_MATCH_PROTOCOL);
assert(ret);
if (protocol >= type_system_union->num)
return -EOPNOTSUPP;
type_system = &type_system_union->type_systems[protocol];
if (!type_system->types)
return -EOPNOTSUPP;
*ret = type_system;
return 0;
}
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