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_compat.h

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

#include <linux/types.h>

/* Old nfnetlink macros for userspace */

/* nfnetlink groups: Up to 32 maximum */
#define NF_NETLINK_CONNTRACK_NEW 		0x00000001
#define NF_NETLINK_CONNTRACK_UPDATE		0x00000002
#define NF_NETLINK_CONNTRACK_DESTROY		0x00000004
#define NF_NETLINK_CONNTRACK_EXP_NEW		0x00000008
#define NF_NETLINK_CONNTRACK_EXP_UPDATE		0x00000010
#define NF_NETLINK_CONNTRACK_EXP_DESTROY	0x00000020

/* Generic structure for encapsulation optional netfilter information.
 * It is reminiscent of sockaddr, but with sa_family replaced
 * with attribute type.
 * ! This should someday be put somewhere generic as now rtnetlink and
 * ! nfnetlink use the same attributes methods. - J. Schulist.
 */

struct nfattr {
	__u16 nfa_len;
	__u16 nfa_type;	/* we use 15 bits for the type, and the highest
				 * bit to indicate whether the payload is nested */
};

/* FIXME: Apart from NFNL_NFA_NESTED shamelessly copy and pasted from
 * rtnetlink.h, it's time to put this in a generic file */

#define NFNL_NFA_NEST	0x8000
#define NFA_TYPE(attr) 	((attr)->nfa_type & 0x7fff)

#define NFA_ALIGNTO     4
#define NFA_ALIGN(len)	(((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1))
#define NFA_OK(nfa,len)	((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \
	&& (nfa)->nfa_len <= (len))
#define NFA_NEXT(nfa,attrlen)	((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \
	(struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len)))
#define NFA_LENGTH(len)	(NFA_ALIGN(sizeof(struct nfattr)) + (len))
#define NFA_SPACE(len)	NFA_ALIGN(NFA_LENGTH(len))
#define NFA_DATA(nfa)   ((void *)(((char *)(nfa)) + NFA_LENGTH(0)))
#define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0))
#define NFA_NEST(skb, type) \
({	struct nfattr *__start = (struct nfattr *)skb_tail_pointer(skb); \
	NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \
	__start;  })
#define NFA_NEST_END(skb, start) \
({      (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
        (skb)->len; })
#define NFA_NEST_CANCEL(skb, start) \
({      if (start) \
                skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
        -1; })

#define NFM_NFA(n)      ((struct nfattr *)(((char *)(n)) \
        + NLMSG_ALIGN(sizeof(struct nfgenmsg))))
#define NFM_PAYLOAD(n)  NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))

#endif /* _NFNETLINK_COMPAT_H */