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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <netinet/in.h>
#include <sys/socket.h>
#include <linux/batman_adv.h>
#include <linux/fou.h>
#include <linux/genetlink.h>
#include <linux/if.h>
#include <linux/if_macsec.h>
#include <linux/l2tp.h>
#include <linux/nl80211.h>
#include <linux/wireguard.h>
#include "netlink-genl.h"
#include "netlink-types-internal.h"
/***************** genl ctrl type systems *****************/
static const NLType genl_ctrl_mcast_group_types[] = {
[CTRL_ATTR_MCAST_GRP_NAME] = { .type = NETLINK_TYPE_STRING },
[CTRL_ATTR_MCAST_GRP_ID] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem genl_ctrl_mcast_group_type_system = {
.count = ELEMENTSOF(genl_ctrl_mcast_group_types),
.types = genl_ctrl_mcast_group_types,
};
static const NLType genl_ctrl_types[] = {
[CTRL_ATTR_FAMILY_ID] = { .type = NETLINK_TYPE_U16 },
[CTRL_ATTR_FAMILY_NAME] = { .type = NETLINK_TYPE_STRING },
[CTRL_ATTR_MCAST_GROUPS] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_ctrl_mcast_group_type_system },
};
static const NLTypeSystem genl_ctrl_type_system = {
.count = ELEMENTSOF(genl_ctrl_types),
.types = genl_ctrl_types,
};
/***************** genl batadv type systems *****************/
static const NLType genl_batadv_types[] = {
[BATADV_ATTR_VERSION] = { .type = NETLINK_TYPE_STRING },
[BATADV_ATTR_ALGO_NAME] = { .type = NETLINK_TYPE_STRING },
[BATADV_ATTR_MESH_IFINDEX] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_MESH_IFNAME] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ },
[BATADV_ATTR_MESH_ADDRESS] = { .size = ETH_ALEN },
[BATADV_ATTR_HARD_IFINDEX] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_HARD_IFNAME] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ },
[BATADV_ATTR_HARD_ADDRESS] = { .size = ETH_ALEN },
[BATADV_ATTR_ORIG_ADDRESS] = { .size = ETH_ALEN },
[BATADV_ATTR_TPMETER_RESULT] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_TPMETER_TEST_TIME] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_TPMETER_BYTES] = { .type = NETLINK_TYPE_U64 },
[BATADV_ATTR_TPMETER_COOKIE] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_PAD] = { .type = NETLINK_TYPE_UNSPEC },
[BATADV_ATTR_ACTIVE] = { .type = NETLINK_TYPE_FLAG },
[BATADV_ATTR_TT_ADDRESS] = { .size = ETH_ALEN },
[BATADV_ATTR_TT_TTVN] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_TT_LAST_TTVN] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_TT_CRC32] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_TT_VID] = { .type = NETLINK_TYPE_U16 },
[BATADV_ATTR_TT_FLAGS] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_FLAG_BEST] = { .type = NETLINK_TYPE_FLAG },
[BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_NEIGH_ADDRESS] = { .size = ETH_ALEN },
[BATADV_ATTR_TQ] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_THROUGHPUT] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_BANDWIDTH_UP] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_BANDWIDTH_DOWN] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_ROUTER] = { .size = ETH_ALEN },
[BATADV_ATTR_BLA_OWN] = { .type = NETLINK_TYPE_FLAG },
[BATADV_ATTR_BLA_ADDRESS] = { .size = ETH_ALEN },
[BATADV_ATTR_BLA_VID] = { .type = NETLINK_TYPE_U16 },
[BATADV_ATTR_BLA_BACKBONE] = { .size = ETH_ALEN },
[BATADV_ATTR_BLA_CRC] = { .type = NETLINK_TYPE_U16 },
[BATADV_ATTR_DAT_CACHE_IP4ADDRESS] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_DAT_CACHE_HWADDRESS] = { .size = ETH_ALEN },
[BATADV_ATTR_DAT_CACHE_VID] = { .type = NETLINK_TYPE_U16 },
[BATADV_ATTR_MCAST_FLAGS] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_MCAST_FLAGS_PRIV] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_VLANID] = { .type = NETLINK_TYPE_U16 },
[BATADV_ATTR_AGGREGATED_OGMS_ENABLED] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_AP_ISOLATION_ENABLED] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_ISOLATION_MARK] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_ISOLATION_MASK] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_BONDING_ENABLED] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_FRAGMENTATION_ENABLED] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_GW_BANDWIDTH_DOWN] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_GW_BANDWIDTH_UP] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_GW_MODE] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_GW_SEL_CLASS] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_HOP_PENALTY] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_LOG_LEVEL] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_MULTICAST_FANOUT] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_NETWORK_CODING_ENABLED] = { .type = NETLINK_TYPE_U8 },
[BATADV_ATTR_ORIG_INTERVAL] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_ELP_INTERVAL] = { .type = NETLINK_TYPE_U32 },
[BATADV_ATTR_THROUGHPUT_OVERRIDE] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem genl_batadv_type_system = {
.count = ELEMENTSOF(genl_batadv_types),
.types = genl_batadv_types,
};
/***************** genl fou type systems *****************/
static const NLType genl_fou_types[] = {
[FOU_ATTR_PORT] = { .type = NETLINK_TYPE_U16 },
[FOU_ATTR_AF] = { .type = NETLINK_TYPE_U8 },
[FOU_ATTR_IPPROTO] = { .type = NETLINK_TYPE_U8 },
[FOU_ATTR_TYPE] = { .type = NETLINK_TYPE_U8 },
[FOU_ATTR_REMCSUM_NOPARTIAL] = { .type = NETLINK_TYPE_FLAG },
[FOU_ATTR_LOCAL_V4] = { .type = NETLINK_TYPE_IN_ADDR },
[FOU_ATTR_PEER_V4] = { .type = NETLINK_TYPE_IN_ADDR },
[FOU_ATTR_LOCAL_V6] = { .type = NETLINK_TYPE_IN_ADDR },
[FOU_ATTR_PEER_V6] = { .type = NETLINK_TYPE_IN_ADDR},
[FOU_ATTR_PEER_PORT] = { .type = NETLINK_TYPE_U16},
[FOU_ATTR_IFINDEX] = { .type = NETLINK_TYPE_U32},
};
static const NLTypeSystem genl_fou_type_system = {
.count = ELEMENTSOF(genl_fou_types),
.types = genl_fou_types,
};
/***************** genl l2tp type systems *****************/
static const NLType genl_l2tp_types[] = {
[L2TP_ATTR_PW_TYPE] = { .type = NETLINK_TYPE_U16 },
[L2TP_ATTR_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 },
[L2TP_ATTR_OFFSET] = { .type = NETLINK_TYPE_U16 },
[L2TP_ATTR_DATA_SEQ] = { .type = NETLINK_TYPE_U16 },
[L2TP_ATTR_L2SPEC_TYPE] = { .type = NETLINK_TYPE_U8 },
[L2TP_ATTR_L2SPEC_LEN] = { .type = NETLINK_TYPE_U8 },
[L2TP_ATTR_PROTO_VERSION] = { .type = NETLINK_TYPE_U8 },
[L2TP_ATTR_IFNAME] = { .type = NETLINK_TYPE_STRING },
[L2TP_ATTR_CONN_ID] = { .type = NETLINK_TYPE_U32 },
[L2TP_ATTR_PEER_CONN_ID] = { .type = NETLINK_TYPE_U32 },
[L2TP_ATTR_SESSION_ID] = { .type = NETLINK_TYPE_U32 },
[L2TP_ATTR_PEER_SESSION_ID] = { .type = NETLINK_TYPE_U32 },
[L2TP_ATTR_UDP_CSUM] = { .type = NETLINK_TYPE_U8 },
[L2TP_ATTR_VLAN_ID] = { .type = NETLINK_TYPE_U16 },
[L2TP_ATTR_RECV_SEQ] = { .type = NETLINK_TYPE_U8 },
[L2TP_ATTR_SEND_SEQ] = { .type = NETLINK_TYPE_U8 },
[L2TP_ATTR_LNS_MODE] = { .type = NETLINK_TYPE_U8 },
[L2TP_ATTR_USING_IPSEC] = { .type = NETLINK_TYPE_U8 },
[L2TP_ATTR_FD] = { .type = NETLINK_TYPE_U32 },
[L2TP_ATTR_IP_SADDR] = { .type = NETLINK_TYPE_IN_ADDR },
[L2TP_ATTR_IP_DADDR] = { .type = NETLINK_TYPE_IN_ADDR },
[L2TP_ATTR_UDP_SPORT] = { .type = NETLINK_TYPE_U16 },
[L2TP_ATTR_UDP_DPORT] = { .type = NETLINK_TYPE_U16 },
[L2TP_ATTR_IP6_SADDR] = { .type = NETLINK_TYPE_IN_ADDR },
[L2TP_ATTR_IP6_DADDR] = { .type = NETLINK_TYPE_IN_ADDR },
[L2TP_ATTR_UDP_ZERO_CSUM6_TX] = { .type = NETLINK_TYPE_FLAG },
[L2TP_ATTR_UDP_ZERO_CSUM6_RX] = { .type = NETLINK_TYPE_FLAG },
};
static const NLTypeSystem genl_l2tp_type_system = {
.count = ELEMENTSOF(genl_l2tp_types),
.types = genl_l2tp_types,
};
/***************** genl macsec type systems *****************/
static const NLType genl_macsec_rxsc_types[] = {
[MACSEC_RXSC_ATTR_SCI] = { .type = NETLINK_TYPE_U64 },
};
static const NLTypeSystem genl_macsec_rxsc_type_system = {
.count = ELEMENTSOF(genl_macsec_rxsc_types),
.types = genl_macsec_rxsc_types,
};
static const NLType genl_macsec_sa_types[] = {
[MACSEC_SA_ATTR_AN] = { .type = NETLINK_TYPE_U8 },
[MACSEC_SA_ATTR_ACTIVE] = { .type = NETLINK_TYPE_U8 },
[MACSEC_SA_ATTR_PN] = { .type = NETLINK_TYPE_U32 },
[MACSEC_SA_ATTR_KEYID] = { .size = MACSEC_KEYID_LEN },
[MACSEC_SA_ATTR_KEY] = { .size = MACSEC_MAX_KEY_LEN },
};
static const NLTypeSystem genl_macsec_sa_type_system = {
.count = ELEMENTSOF(genl_macsec_sa_types),
.types = genl_macsec_sa_types,
};
static const NLType genl_macsec_types[] = {
[MACSEC_ATTR_IFINDEX] = { .type = NETLINK_TYPE_U32 },
[MACSEC_ATTR_RXSC_CONFIG] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_macsec_rxsc_type_system },
[MACSEC_ATTR_SA_CONFIG] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_macsec_sa_type_system },
};
static const NLTypeSystem genl_macsec_type_system = {
.count = ELEMENTSOF(genl_macsec_types),
.types = genl_macsec_types,
};
/***************** genl nl80211 type systems *****************/
static const NLType genl_nl80211_types[] = {
[NL80211_ATTR_IFINDEX] = { .type = NETLINK_TYPE_U32 },
[NL80211_ATTR_MAC] = { .type = NETLINK_TYPE_ETHER_ADDR },
[NL80211_ATTR_SSID] = { .type = NETLINK_TYPE_STRING },
[NL80211_ATTR_IFTYPE] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem genl_nl80211_type_system = {
.count = ELEMENTSOF(genl_nl80211_types),
.types = genl_nl80211_types,
};
/***************** genl wireguard type systems *****************/
static const NLType genl_wireguard_allowedip_types[] = {
[WGALLOWEDIP_A_FAMILY] = { .type = NETLINK_TYPE_U16 },
[WGALLOWEDIP_A_IPADDR] = { .type = NETLINK_TYPE_IN_ADDR },
[WGALLOWEDIP_A_CIDR_MASK] = { .type = NETLINK_TYPE_U8 },
};
static const NLTypeSystem genl_wireguard_allowedip_type_system = {
.count = ELEMENTSOF(genl_wireguard_allowedip_types),
.types = genl_wireguard_allowedip_types,
};
static const NLType genl_wireguard_peer_types[] = {
[WGPEER_A_PUBLIC_KEY] = { .size = WG_KEY_LEN },
[WGPEER_A_FLAGS] = { .type = NETLINK_TYPE_U32 },
[WGPEER_A_PRESHARED_KEY] = { .size = WG_KEY_LEN },
[WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL] = { .type = NETLINK_TYPE_U16 },
[WGPEER_A_ENDPOINT] = { .type = NETLINK_TYPE_SOCKADDR },
[WGPEER_A_ALLOWEDIPS] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_wireguard_allowedip_type_system },
};
static const NLTypeSystem genl_wireguard_peer_type_system = {
.count = ELEMENTSOF(genl_wireguard_peer_types),
.types = genl_wireguard_peer_types,
};
static const NLType genl_wireguard_types[] = {
[WGDEVICE_A_IFINDEX] = { .type = NETLINK_TYPE_U32 },
[WGDEVICE_A_IFNAME] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ-1 },
[WGDEVICE_A_FLAGS] = { .type = NETLINK_TYPE_U32 },
[WGDEVICE_A_PRIVATE_KEY] = { .size = WG_KEY_LEN },
[WGDEVICE_A_LISTEN_PORT] = { .type = NETLINK_TYPE_U16 },
[WGDEVICE_A_FWMARK] = { .type = NETLINK_TYPE_U32 },
[WGDEVICE_A_PEERS] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_wireguard_peer_type_system },
};
static const NLTypeSystem genl_wireguard_type_system = {
.count = ELEMENTSOF(genl_wireguard_types),
.types = genl_wireguard_types,
};
/***************** genl families *****************/
static const NLType genl_families[] = {
[SD_GENL_ID_CTRL] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_ctrl_type_system },
[SD_GENL_WIREGUARD] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_wireguard_type_system },
[SD_GENL_FOU] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_fou_type_system },
[SD_GENL_L2TP] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_l2tp_type_system },
[SD_GENL_MACSEC] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_macsec_type_system },
[SD_GENL_NL80211] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_nl80211_type_system },
[SD_GENL_BATADV] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_batadv_type_system },
};
/* Mainly used when sending message */
const NLTypeSystem genl_family_type_system = {
.count = ELEMENTSOF(genl_families),
.types = genl_families,
};
static const NLType genl_types[] = {
[SD_GENL_DONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system },
[SD_GENL_ERROR] = { .type = NETLINK_TYPE_NESTED, .type_system = &error_type_system, .size = sizeof(struct nlmsgerr) },
[SD_GENL_ID_CTRL] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_ctrl_type_system, .size = sizeof(struct genlmsghdr) },
[SD_GENL_NL80211] = { .type = NETLINK_TYPE_NESTED, .type_system = &genl_nl80211_type_system, .size = sizeof(struct genlmsghdr) },
};
/* Mainly used when message received */
static const NLTypeSystem genl_type_system = {
.count = ELEMENTSOF(genl_types),
.types = genl_types,
};
int genl_get_type(sd_netlink *genl, uint16_t nlmsg_type, const NLType **ret) {
sd_genl_family_t family;
const NLType *nl_type;
int r;
r = nlmsg_type_to_genl_family(genl, nlmsg_type, &family);
if (r < 0)
return r;
if (family >= genl_type_system.count)
return -EOPNOTSUPP;
nl_type = &genl_type_system.types[family];
if (nl_type->type == NETLINK_TYPE_UNSPEC)
return -EOPNOTSUPP;
*ret = nl_type;
return 0;
}
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