golden hour

/usr/include/linux/netfilter

File/Folder	Size	Actions
ipset	-
nf_conntrack_common.h	4.48 KB
nf_conntrack_ftp.h	438 B
nf_conntrack_sctp.h	597 B
nf_conntrack_tcp.h	1.38 KB
nf_conntrack_tuple_common.h	896 B
nf_log.h	538 B
nf_nat.h	1.55 KB
nf_synproxy.h	576 B
nf_tables.h	56.89 KB
nf_tables_compat.h	731 B
nfnetlink.h	2.4 KB
nfnetlink_acct.h	900 B
nfnetlink_compat.h	2.39 KB
nfnetlink_conntrack.h	6.04 KB
nfnetlink_cthelper.h	1.18 KB
nfnetlink_cttimeout.h	2.88 KB
nfnetlink_hook.h	1.65 KB
nfnetlink_log.h	3.03 KB
nfnetlink_osf.h	2.6 KB
nfnetlink_queue.h	3.5 KB
x_tables.h	4.36 KB
xt_AUDIT.h	718 B
xt_CHECKSUM.h	563 B
xt_CLASSIFY.h	217 B
xt_CONNMARK.h	199 B
xt_CONNSECMARK.h	301 B
xt_CT.h	853 B
xt_DSCP.h	697 B
xt_HMARK.h	933 B
xt_IDLETIMER.h	1.6 KB
xt_LED.h	470 B
xt_LOG.h	642 B
xt_MARK.h	184 B
xt_NFLOG.h	556 B
xt_NFQUEUE.h	779 B
xt_RATEEST.h	390 B
xt_SECMARK.h	648 B
xt_SYNPROXY.h	498 B
xt_TCPMSS.h	235 B
xt_TCPOPTSTRIP.h	407 B
xt_TEE.h	333 B
xt_TPROXY.h	575 B
xt_addrtype.h	1.06 KB
xt_bpf.h	935 B
xt_cgroup.h	740 B
xt_cluster.h	374 B
xt_comment.h	230 B
xt_connbytes.h	577 B
xt_connlabel.h	360 B
xt_connlimit.h	575 B
xt_connmark.h	901 B
xt_conntrack.h	2.5 KB
xt_cpu.h	199 B
xt_dccp.h	483 B
xt_devgroup.h	429 B
xt_dscp.h	701 B
xt_ecn.h	736 B
xt_esp.h	418 B
xt_hashlimit.h	3.18 KB
xt_helper.h	188 B
xt_ipcomp.h	485 B
xt_iprange.h	581 B
xt_ipvs.h	680 B
xt_l2tp.h	739 B
xt_length.h	221 B
xt_limit.h	673 B
xt_mac.h	227 B
xt_mark.h	260 B
xt_multiport.h	721 B
xt_nfacct.h	421 B
xt_osf.h	1.66 KB
xt_owner.h	535 B
xt_physdev.h	553 B
xt_pkttype.h	188 B
xt_policy.h	1.03 KB
xt_quota.h	400 B
xt_rateest.h	859 B
xt_realm.h	220 B
xt_recent.h	1.03 KB
xt_rpfilter.h	320 B
xt_sctp.h	2.27 KB
xt_set.h	1.78 KB
xt_socket.h	640 B
xt_state.h	331 B
xt_statistic.h	716 B
xt_string.h	664 B
xt_tcpmss.h	253 B
xt_tcpudp.h	1.22 KB
xt_time.h	730 B
xt_u32.h	752 B

Edit: nfnetlink_hook.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _NFNL_HOOK_H_
#define _NFNL_HOOK_H_

enum nfnl_hook_msg_types {
	NFNL_MSG_HOOK_GET,
	NFNL_MSG_HOOK_MAX,
};

/**
 * enum nfnl_hook_attributes - netfilter hook netlink attributes
 *
 * @NFNLA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
 * @NFNLA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
 * @NFNLA_HOOK_DEV: netdevice name (NLA_STRING)
 * @NFNLA_HOOK_FUNCTION_NAME: hook function name (NLA_STRING)
 * @NFNLA_HOOK_MODULE_NAME: kernel module that registered this hook (NLA_STRING)
 * @NFNLA_HOOK_CHAIN_INFO: basechain hook metadata (NLA_NESTED)
 */
enum nfnl_hook_attributes {
	NFNLA_HOOK_UNSPEC,
	NFNLA_HOOK_HOOKNUM,
	NFNLA_HOOK_PRIORITY,
	NFNLA_HOOK_DEV,
	NFNLA_HOOK_FUNCTION_NAME,
	NFNLA_HOOK_MODULE_NAME,
	NFNLA_HOOK_CHAIN_INFO,
	__NFNLA_HOOK_MAX
};
#define NFNLA_HOOK_MAX		(__NFNLA_HOOK_MAX - 1)

/**
 * enum nfnl_hook_chain_info_attributes - chain description
 *
 * NFNLA_HOOK_INFO_DESC: nft chain and table name (enum nft_table_attributes) (NLA_NESTED)
 * NFNLA_HOOK_INFO_TYPE: chain type (enum nfnl_hook_chaintype) (NLA_U32)
 */
enum nfnl_hook_chain_info_attributes {
	NFNLA_HOOK_INFO_UNSPEC,
	NFNLA_HOOK_INFO_DESC,
	NFNLA_HOOK_INFO_TYPE,
	__NFNLA_HOOK_INFO_MAX,
};
#define NFNLA_HOOK_INFO_MAX (__NFNLA_HOOK_INFO_MAX - 1)

enum nfnl_hook_chain_desc_attributes {
	NFNLA_CHAIN_UNSPEC,
	NFNLA_CHAIN_TABLE,
	NFNLA_CHAIN_FAMILY,
	NFNLA_CHAIN_NAME,
	__NFNLA_CHAIN_MAX,
};
#define NFNLA_CHAIN_MAX (__NFNLA_CHAIN_MAX - 1)

/**
 * enum nfnl_hook_chaintype - chain type
 *
 * @NFNL_HOOK_TYPE_NFTABLES nf_tables base chain
 */
enum nfnl_hook_chaintype {
	NFNL_HOOK_TYPE_NFTABLES = 0x1,
};

#endif /* _NFNL_HOOK_H */