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📄 nf_conntrack_common.h(4.48 KB)
📄 nf_conntrack_ftp.h(438 B)
📄 nf_conntrack_sctp.h(576 B)
📄 nf_conntrack_tcp.h(1.38 KB)
📄 nf_conntrack_tuple_common.h(896 B)
📄 nf_log.h(538 B)
📄 nf_nat.h(1.49 KB)
📄 nf_osf.h(1.9 KB)
📄 nf_tables.h(48.24 KB)
📄 nf_tables_compat.h(731 B)
📄 nfnetlink.h(2.37 KB)
📄 nfnetlink_acct.h(900 B)
📄 nfnetlink_compat.h(2.39 KB)
📄 nfnetlink_conntrack.h(6.02 KB)
📄 nfnetlink_cthelper.h(1.17 KB)
📄 nfnetlink_cttimeout.h(2.86 KB)
📄 nfnetlink_log.h(2.73 KB)
📄 nfnetlink_queue.h(3.42 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(1.36 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(419 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(463 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(900 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(301 B)
📄 xt_osf.h(1.79 KB)
📄 xt_owner.h(420 B)
📄 xt_physdev.h(553 B)
📄 xt_pkttype.h(188 B)
📄 xt_policy.h(1022 B)
📄 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)

Editing: nf_conntrack_common.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _NF_CONNTRACK_COMMON_H
#define _NF_CONNTRACK_COMMON_H
/* Connection state tracking for netfilter.  This is separated from,
   but required by, the NAT layer; it can also be used by an iptables
   extension. */
enum ip_conntrack_info {
	/* Part of an established connection (either direction). */
	IP_CT_ESTABLISHED,

/* Like NEW, but related to an existing connection, or ICMP error
	   (in either direction). */
	IP_CT_RELATED,

/* Started a new connection to track (only
           IP_CT_DIR_ORIGINAL); may be a retransmission. */
	IP_CT_NEW,

/* >= this indicates reply direction */
	IP_CT_IS_REPLY,

IP_CT_ESTABLISHED_REPLY = IP_CT_ESTABLISHED + IP_CT_IS_REPLY,
	IP_CT_RELATED_REPLY = IP_CT_RELATED + IP_CT_IS_REPLY,
	/* No NEW in reply direction. */

/* Number of distinct IP_CT types. */
	IP_CT_NUMBER,

/* only for userspace compatibility */
	IP_CT_NEW_REPLY = IP_CT_NUMBER,
};

#define NF_CT_STATE_INVALID_BIT			(1 << 0)
#define NF_CT_STATE_BIT(ctinfo)			(1 << ((ctinfo) % IP_CT_IS_REPLY + 1))
#define NF_CT_STATE_UNTRACKED_BIT		(1 << 6)

/* Bitset representing status of connection. */
enum ip_conntrack_status {
	/* It's an expected connection: bit 0 set.  This bit never changed */
	IPS_EXPECTED_BIT = 0,
	IPS_EXPECTED = (1 << IPS_EXPECTED_BIT),

/* We've seen packets both ways: bit 1 set.  Can be set, not unset. */
	IPS_SEEN_REPLY_BIT = 1,
	IPS_SEEN_REPLY = (1 << IPS_SEEN_REPLY_BIT),

/* Conntrack should never be early-expired. */
	IPS_ASSURED_BIT = 2,
	IPS_ASSURED = (1 << IPS_ASSURED_BIT),

/* Connection is confirmed: originating packet has left box */
	IPS_CONFIRMED_BIT = 3,
	IPS_CONFIRMED = (1 << IPS_CONFIRMED_BIT),

/* Connection needs src nat in orig dir.  This bit never changed. */
	IPS_SRC_NAT_BIT = 4,
	IPS_SRC_NAT = (1 << IPS_SRC_NAT_BIT),

/* Connection needs dst nat in orig dir.  This bit never changed. */
	IPS_DST_NAT_BIT = 5,
	IPS_DST_NAT = (1 << IPS_DST_NAT_BIT),

/* Both together. */
	IPS_NAT_MASK = (IPS_DST_NAT | IPS_SRC_NAT),

/* Connection needs TCP sequence adjusted. */
	IPS_SEQ_ADJUST_BIT = 6,
	IPS_SEQ_ADJUST = (1 << IPS_SEQ_ADJUST_BIT),

/* NAT initialization bits. */
	IPS_SRC_NAT_DONE_BIT = 7,
	IPS_SRC_NAT_DONE = (1 << IPS_SRC_NAT_DONE_BIT),

IPS_DST_NAT_DONE_BIT = 8,
	IPS_DST_NAT_DONE = (1 << IPS_DST_NAT_DONE_BIT),

/* Both together */
	IPS_NAT_DONE_MASK = (IPS_DST_NAT_DONE | IPS_SRC_NAT_DONE),

/* Connection is dying (removed from lists), can not be unset. */
	IPS_DYING_BIT = 9,
	IPS_DYING = (1 << IPS_DYING_BIT),

/* Connection has fixed timeout. */
	IPS_FIXED_TIMEOUT_BIT = 10,
	IPS_FIXED_TIMEOUT = (1 << IPS_FIXED_TIMEOUT_BIT),

/* Conntrack is a template */
	IPS_TEMPLATE_BIT = 11,
	IPS_TEMPLATE = (1 << IPS_TEMPLATE_BIT),

/* Conntrack is a fake untracked entry.  Obsolete and not used anymore */
	IPS_UNTRACKED_BIT = 12,
	IPS_UNTRACKED = (1 << IPS_UNTRACKED_BIT),

/* Conntrack got a helper explicitly attached (ruleset, ctnetlink). */
	IPS_HELPER_BIT = 13,
	IPS_HELPER = (1 << IPS_HELPER_BIT),

/* Conntrack has been offloaded to flow table. */
	IPS_OFFLOAD_BIT = 14,
	IPS_OFFLOAD = (1 << IPS_OFFLOAD_BIT),

/* Conntrack has been offloaded to hardware. */
	IPS_HW_OFFLOAD_BIT = 15,
	IPS_HW_OFFLOAD = (1 << IPS_HW_OFFLOAD_BIT),

/* Be careful here, modifying these bits can make things messy,
	 * so don't let users modify them directly.
	 */
	IPS_UNCHANGEABLE_MASK = (IPS_NAT_DONE_MASK | IPS_NAT_MASK |
				 IPS_EXPECTED | IPS_CONFIRMED | IPS_DYING |
				 IPS_SEQ_ADJUST | IPS_TEMPLATE | IPS_UNTRACKED |
				 IPS_OFFLOAD | IPS_HW_OFFLOAD),

__IPS_MAX_BIT = 16,
};

/* Connection tracking event types */
enum ip_conntrack_events {
	IPCT_NEW,		/* new conntrack */
	IPCT_RELATED,		/* related conntrack */
	IPCT_DESTROY,		/* destroyed conntrack */
	IPCT_REPLY,		/* connection has seen two-way traffic */
	IPCT_ASSURED,		/* connection status has changed to assured */
	IPCT_PROTOINFO,		/* protocol information has changed */
	IPCT_HELPER,		/* new helper has been set */
	IPCT_MARK,		/* new mark has been set */
	IPCT_SEQADJ,		/* sequence adjustment has changed */
	IPCT_NATSEQADJ = IPCT_SEQADJ,
	IPCT_SECMARK,		/* new security mark has been set */
	IPCT_LABEL,		/* new connlabel has been set */
	IPCT_SYNPROXY,		/* synproxy has been set */
};

enum ip_conntrack_expect_events {
	IPEXP_NEW,		/* new expectation */
	IPEXP_DESTROY,		/* destroyed expectation */
};

/* expectation flags */
#define NF_CT_EXPECT_PERMANENT		0x1
#define NF_CT_EXPECT_INACTIVE		0x2
#define NF_CT_EXPECT_USERSPACE		0x4

#endif /* _NF_CONNTRACK_COMMON_H */

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Editing: nf_conntrack_common.h

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