golden hour

/usr/include/linux/netfilter

File/Folder	Size	Actions
ipset	-
nf_conntrack_common.h	3.81 KB
nf_conntrack_ftp.h	375 B
nf_conntrack_sctp.h	595 B
nf_conntrack_tcp.h	1.24 KB
nf_conntrack_tuple_common.h	708 B
nf_nat.h	1.12 KB
nf_tables.h	31.31 KB
nf_tables_compat.h	668 B
nfnetlink.h	2.01 KB
nfnetlink_acct.h	522 B
nfnetlink_compat.h	2.33 KB
nfnetlink_conntrack.h	5.42 KB
nfnetlink_cthelper.h	1.11 KB
nfnetlink_cttimeout.h	2.8 KB
nfnetlink_log.h	2.51 KB
nfnetlink_queue.h	2.88 KB
x_tables.h	4.3 KB
xt_AUDIT.h	655 B
xt_CHECKSUM.h	500 B
xt_CLASSIFY.h	154 B
xt_CONNMARK.h	136 B
xt_CONNSECMARK.h	238 B
xt_CT.h	790 B
xt_DSCP.h	709 B
xt_HMARK.h	841 B
xt_IDLETIMER.h	1.3 KB
xt_LED.h	407 B
xt_LOG.h	579 B
xt_MARK.h	121 B
xt_NFLOG.h	326 B
xt_NFQUEUE.h	716 B
xt_RATEEST.h	305 B
xt_SECMARK.h	486 B
xt_TCPMSS.h	172 B
xt_TCPOPTSTRIP.h	344 B
xt_TEE.h	240 B
xt_TPROXY.h	483 B
xt_addrtype.h	1021 B
xt_bpf.h	340 B
xt_cgroup.h	149 B
xt_cluster.h	311 B
xt_comment.h	167 B
xt_connbytes.h	514 B
xt_connlabel.h	217 B
xt_connlimit.h	571 B
xt_connmark.h	853 B
xt_conntrack.h	2.99 KB
xt_cpu.h	136 B
xt_dccp.h	420 B
xt_devgroup.h	366 B
xt_dscp.h	638 B
xt_ecn.h	673 B
xt_esp.h	355 B
xt_hashlimit.h	1.83 KB
xt_helper.h	125 B
xt_iprange.h	518 B
xt_ipvs.h	588 B
xt_length.h	158 B
xt_limit.h	610 B
xt_mac.h	135 B
xt_mark.h	473 B
xt_multiport.h	658 B
xt_nfacct.h	238 B
xt_osf.h	3.27 KB
xt_owner.h	557 B
xt_physdev.h	469 B
xt_pkttype.h	125 B
xt_policy.h	914 B
xt_quota.h	337 B
xt_rateest.h	774 B
xt_realm.h	157 B
xt_recent.h	966 B
xt_rpfilter.h	257 B
xt_sctp.h	2.22 KB
xt_set.h	1.38 KB
xt_socket.h	382 B
xt_state.h	268 B
xt_statistic.h	653 B
xt_string.h	601 B
xt_tcpmss.h	190 B
xt_tcpudp.h	1.16 KB
xt_time.h	667 B
xt_u32.h	689 B

Edit: xt_conntrack.h

/* Header file for kernel module to match connection tracking information.
 * GPL (C) 2001  Marc Boucher (marc@mbsi.ca).
 */

#ifndef _XT_CONNTRACK_H
#define _XT_CONNTRACK_H

#include <linux/types.h>
#include <linux/netfilter.h>
#include <linux/netfilter/nf_conntrack_tuple_common.h>

#define XT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1))
#define XT_CONNTRACK_STATE_INVALID (1 << 0)

#define XT_CONNTRACK_STATE_SNAT (1 << (IP_CT_NUMBER + 1))
#define XT_CONNTRACK_STATE_DNAT (1 << (IP_CT_NUMBER + 2))
#define XT_CONNTRACK_STATE_UNTRACKED (1 << (IP_CT_NUMBER + 3))

/* flags, invflags: */
enum {
	XT_CONNTRACK_STATE        = 1 << 0,
	XT_CONNTRACK_PROTO        = 1 << 1,
	XT_CONNTRACK_ORIGSRC      = 1 << 2,
	XT_CONNTRACK_ORIGDST      = 1 << 3,
	XT_CONNTRACK_REPLSRC      = 1 << 4,
	XT_CONNTRACK_REPLDST      = 1 << 5,
	XT_CONNTRACK_STATUS       = 1 << 6,
	XT_CONNTRACK_EXPIRES      = 1 << 7,
	XT_CONNTRACK_ORIGSRC_PORT = 1 << 8,
	XT_CONNTRACK_ORIGDST_PORT = 1 << 9,
	XT_CONNTRACK_REPLSRC_PORT = 1 << 10,
	XT_CONNTRACK_REPLDST_PORT = 1 << 11,
	XT_CONNTRACK_DIRECTION    = 1 << 12,
	XT_CONNTRACK_STATE_ALIAS  = 1 << 13,
};

/* This is exposed to userspace, so remains frozen in time. */
struct ip_conntrack_old_tuple
{
	struct {
		__be32 ip;
		union {
			__u16 all;
		} u;
	} src;

struct {
		__be32 ip;
		union {
			__u16 all;
		} u;

/* The protocol. */
		__u16 protonum;
	} dst;
};

struct xt_conntrack_info
{
	unsigned int statemask, statusmask;
        struct ip_conntrack_old_tuple tuple[IP_CT_DIR_MAX];
	struct in_addr sipmsk[IP_CT_DIR_MAX], dipmsk[IP_CT_DIR_MAX];

unsigned long expires_min, expires_max;

/* Flags word */
	__u8 flags;
	/* Inverse flags */
	__u8 invflags;
};

struct xt_conntrack_mtinfo1 {
	union nf_inet_addr origsrc_addr, origsrc_mask;
	union nf_inet_addr origdst_addr, origdst_mask;
	union nf_inet_addr replsrc_addr, replsrc_mask;
	union nf_inet_addr repldst_addr, repldst_mask;
	__u32 expires_min, expires_max;
	__u16 l4proto;
	__be16 origsrc_port, origdst_port;
	__be16 replsrc_port, repldst_port;
	__u16 match_flags, invert_flags;
	__u8 state_mask, status_mask;
};

struct xt_conntrack_mtinfo2 {
	union nf_inet_addr origsrc_addr, origsrc_mask;
	union nf_inet_addr origdst_addr, origdst_mask;
	union nf_inet_addr replsrc_addr, replsrc_mask;
	union nf_inet_addr repldst_addr, repldst_mask;
	__u32 expires_min, expires_max;
	__u16 l4proto;
	__be16 origsrc_port, origdst_port;
	__be16 replsrc_port, repldst_port;
	__u16 match_flags, invert_flags;
	__u16 state_mask, status_mask;
};

struct xt_conntrack_mtinfo3 {
	union nf_inet_addr origsrc_addr, origsrc_mask;
	union nf_inet_addr origdst_addr, origdst_mask;
	union nf_inet_addr replsrc_addr, replsrc_mask;
	union nf_inet_addr repldst_addr, repldst_mask;
	__u32 expires_min, expires_max;
	__u16 l4proto;
	__u16 origsrc_port, origdst_port;
	__u16 replsrc_port, repldst_port;
	__u16 match_flags, invert_flags;
	__u16 state_mask, status_mask;
	__u16 origsrc_port_high, origdst_port_high;
	__u16 replsrc_port_high, repldst_port_high;
};

#endif /*_XT_CONNTRACK_H*/