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.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _NFNETLINK_H
#define _NFNETLINK_H
#include <linux/types.h>
#include <linux/netfilter/nfnetlink_compat.h>

enum nfnetlink_groups {
	NFNLGRP_NONE,
#define NFNLGRP_NONE			NFNLGRP_NONE
	NFNLGRP_CONNTRACK_NEW,
#define NFNLGRP_CONNTRACK_NEW		NFNLGRP_CONNTRACK_NEW
	NFNLGRP_CONNTRACK_UPDATE,
#define NFNLGRP_CONNTRACK_UPDATE	NFNLGRP_CONNTRACK_UPDATE
	NFNLGRP_CONNTRACK_DESTROY,
#define NFNLGRP_CONNTRACK_DESTROY	NFNLGRP_CONNTRACK_DESTROY
	NFNLGRP_CONNTRACK_EXP_NEW,
#define	NFNLGRP_CONNTRACK_EXP_NEW	NFNLGRP_CONNTRACK_EXP_NEW
	NFNLGRP_CONNTRACK_EXP_UPDATE,
#define NFNLGRP_CONNTRACK_EXP_UPDATE	NFNLGRP_CONNTRACK_EXP_UPDATE
	NFNLGRP_CONNTRACK_EXP_DESTROY,
#define NFNLGRP_CONNTRACK_EXP_DESTROY	NFNLGRP_CONNTRACK_EXP_DESTROY
	NFNLGRP_NFTABLES,
#define NFNLGRP_NFTABLES                NFNLGRP_NFTABLES
	NFNLGRP_ACCT_QUOTA,
#define NFNLGRP_ACCT_QUOTA		NFNLGRP_ACCT_QUOTA
	NFNLGRP_NFTRACE,
#define NFNLGRP_NFTRACE			NFNLGRP_NFTRACE
	__NFNLGRP_MAX,
};
#define NFNLGRP_MAX	(__NFNLGRP_MAX - 1)

/* General form of address family dependent message.
 */
struct nfgenmsg {
	__u8  nfgen_family;		/* AF_xxx */
	__u8  version;		/* nfnetlink version */
	__be16    res_id;		/* resource id */
};

#define NFNETLINK_V0	0

/* netfilter netlink message types are split in two pieces:
 * 8 bit subsystem, 8bit operation.
 */

#define NFNL_SUBSYS_ID(x)	((x & 0xff00) >> 8)
#define NFNL_MSG_TYPE(x)	(x & 0x00ff)

/* No enum here, otherwise __stringify() trick of MODULE_ALIAS_NFNL_SUBSYS()
 * won't work anymore */
#define NFNL_SUBSYS_NONE 		0
#define NFNL_SUBSYS_CTNETLINK		1
#define NFNL_SUBSYS_CTNETLINK_EXP	2
#define NFNL_SUBSYS_QUEUE		3
#define NFNL_SUBSYS_ULOG		4
#define NFNL_SUBSYS_OSF			5
#define NFNL_SUBSYS_IPSET		6
#define NFNL_SUBSYS_ACCT		7
#define NFNL_SUBSYS_CTNETLINK_TIMEOUT	8
#define NFNL_SUBSYS_CTHELPER		9
#define NFNL_SUBSYS_NFTABLES		10
#define NFNL_SUBSYS_NFT_COMPAT		11
#define NFNL_SUBSYS_HOOK		12
#define NFNL_SUBSYS_COUNT		13

/* Reserved control nfnetlink messages */
#define NFNL_MSG_BATCH_BEGIN		NLMSG_MIN_TYPE
#define NFNL_MSG_BATCH_END		NLMSG_MIN_TYPE+1

/**
 * enum nfnl_batch_attributes - nfnetlink batch netlink attributes
 *
 * @NFNL_BATCH_GENID: generation ID for this changeset (NLA_U32)
 */
enum nfnl_batch_attributes {
        NFNL_BATCH_UNSPEC,
        NFNL_BATCH_GENID,
        __NFNL_BATCH_MAX
};
#define NFNL_BATCH_MAX			(__NFNL_BATCH_MAX - 1)

#endif /* _NFNETLINK_H */