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Name	Size	Permission
ipset	[ DIR ]	drwxr-xr-x
nf_conntrack_common.h	4.32 KB	-rw-r--r--
nf_conntrack_ftp.h	438 B	-rw-r--r--
nf_conntrack_sctp.h	597 B	-rw-r--r--
nf_conntrack_tcp.h	1.38 KB	-rw-r--r--
nf_conntrack_tuple_common.h	896 B	-rw-r--r--
nf_log.h	538 B	-rw-r--r--
nf_nat.h	1.49 KB	-rw-r--r--
nf_synproxy.h	576 B	-rw-r--r--
nf_tables.h	50.75 KB	-rw-r--r--
nf_tables_compat.h	731 B	-rw-r--r--
nfnetlink.h	2.37 KB	-rw-r--r--
nfnetlink_acct.h	900 B	-rw-r--r--
nfnetlink_compat.h	2.39 KB	-rw-r--r--
nfnetlink_conntrack.h	5.79 KB	-rw-r--r--
nfnetlink_cthelper.h	1.18 KB	-rw-r--r--
nfnetlink_cttimeout.h	2.88 KB	-rw-r--r--
nfnetlink_log.h	3.03 KB	-rw-r--r--
nfnetlink_osf.h	2.6 KB	-rw-r--r--
nfnetlink_queue.h	3.42 KB	-rw-r--r--
x_tables.h	4.36 KB	-rw-r--r--
xt_AUDIT.h	718 B	-rw-r--r--
xt_CHECKSUM.h	563 B	-rw-r--r--
xt_CLASSIFY.h	217 B	-rw-r--r--
xt_CONNMARK.h	199 B	-rw-r--r--
xt_CONNSECMARK.h	301 B	-rw-r--r--
xt_CT.h	853 B	-rw-r--r--
xt_DSCP.h	697 B	-rw-r--r--
xt_HMARK.h	933 B	-rw-r--r--
xt_IDLETIMER.h	1.36 KB	-rw-r--r--
xt_LED.h	470 B	-rw-r--r--
xt_LOG.h	642 B	-rw-r--r--
xt_MARK.h	184 B	-rw-r--r--
xt_NFLOG.h	556 B	-rw-r--r--
xt_NFQUEUE.h	779 B	-rw-r--r--
xt_RATEEST.h	390 B	-rw-r--r--
xt_SECMARK.h	648 B	-rw-r--r--
xt_SYNPROXY.h	498 B	-rw-r--r--
xt_TCPMSS.h	235 B	-rw-r--r--
xt_TCPOPTSTRIP.h	407 B	-rw-r--r--
xt_TEE.h	333 B	-rw-r--r--
xt_TPROXY.h	575 B	-rw-r--r--
xt_addrtype.h	1.06 KB	-rw-r--r--
xt_bpf.h	935 B	-rw-r--r--
xt_cgroup.h	740 B	-rw-r--r--
xt_cluster.h	374 B	-rw-r--r--
xt_comment.h	230 B	-rw-r--r--
xt_connbytes.h	577 B	-rw-r--r--
xt_connlabel.h	360 B	-rw-r--r--
xt_connlimit.h	575 B	-rw-r--r--
xt_connmark.h	900 B	-rw-r--r--
xt_conntrack.h	2.5 KB	-rw-r--r--
xt_cpu.h	199 B	-rw-r--r--
xt_dccp.h	483 B	-rw-r--r--
xt_devgroup.h	429 B	-rw-r--r--
xt_dscp.h	701 B	-rw-r--r--
xt_ecn.h	736 B	-rw-r--r--
xt_esp.h	418 B	-rw-r--r--
xt_hashlimit.h	3.18 KB	-rw-r--r--
xt_helper.h	188 B	-rw-r--r--
xt_ipcomp.h	485 B	-rw-r--r--
xt_iprange.h	581 B	-rw-r--r--
xt_ipvs.h	680 B	-rw-r--r--
xt_l2tp.h	739 B	-rw-r--r--
xt_length.h	221 B	-rw-r--r--
xt_limit.h	673 B	-rw-r--r--
xt_mac.h	227 B	-rw-r--r--
xt_mark.h	260 B	-rw-r--r--
xt_multiport.h	721 B	-rw-r--r--
xt_nfacct.h	421 B	-rw-r--r--
xt_osf.h	1.66 KB	-rw-r--r--
xt_owner.h	535 B	-rw-r--r--
xt_physdev.h	553 B	-rw-r--r--
xt_pkttype.h	188 B	-rw-r--r--
xt_policy.h	1.03 KB	-rw-r--r--
xt_quota.h	400 B	-rw-r--r--
xt_rateest.h	859 B	-rw-r--r--
xt_realm.h	220 B	-rw-r--r--
xt_recent.h	1.03 KB	-rw-r--r--
xt_rpfilter.h	320 B	-rw-r--r--
xt_sctp.h	2.27 KB	-rw-r--r--
xt_set.h	1.78 KB	-rw-r--r--
xt_socket.h	640 B	-rw-r--r--
xt_state.h	331 B	-rw-r--r--
xt_statistic.h	716 B	-rw-r--r--
xt_string.h	664 B	-rw-r--r--
xt_tcpmss.h	253 B	-rw-r--r--
xt_tcpudp.h	1.22 KB	-rw-r--r--
xt_time.h	730 B	-rw-r--r--
xt_u32.h	752 B	-rw-r--r--

Code Editor : 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 via CT target. */
	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),

/* 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_OFFLOAD),

__IPS_MAX_BIT = 15,
};

/* 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 */

${this.title}

Code Editor : nf_conntrack_common.h