The C and C++ Include Header Files

/usr/include/linux/netfilter/xt_conntrack.h


$ cat -n /usr/include/linux/netfilter/xt_conntrack.h

     1	/* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */
     2	/* Header file for kernel module to match connection tracking information.
     3	 * GPL (C) 2001  Marc Boucher (marc@mbsi.ca).
     4	 */
     5	
     6	#ifndef _XT_CONNTRACK_H
     7	#define _XT_CONNTRACK_H
     8	
     9	#include <linux/types.h>
    10	#include <linux/netfilter.h>
    11	#include <linux/netfilter/nf_conntrack_tuple_common.h>
    12	
    13	#define XT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1))
    14	#define XT_CONNTRACK_STATE_INVALID (1 << 0)
    15	
    16	#define XT_CONNTRACK_STATE_SNAT (1 << (IP_CT_NUMBER + 1))
    17	#define XT_CONNTRACK_STATE_DNAT (1 << (IP_CT_NUMBER + 2))
    18	#define XT_CONNTRACK_STATE_UNTRACKED (1 << (IP_CT_NUMBER + 3))
    19	
    20	/* flags, invflags: */
    21	enum {
    22		XT_CONNTRACK_STATE        = 1 << 0,
    23		XT_CONNTRACK_PROTO        = 1 << 1,
    24		XT_CONNTRACK_ORIGSRC      = 1 << 2,
    25		XT_CONNTRACK_ORIGDST      = 1 << 3,
    26		XT_CONNTRACK_REPLSRC      = 1 << 4,
    27		XT_CONNTRACK_REPLDST      = 1 << 5,
    28		XT_CONNTRACK_STATUS       = 1 << 6,
    29		XT_CONNTRACK_EXPIRES      = 1 << 7,
    30		XT_CONNTRACK_ORIGSRC_PORT = 1 << 8,
    31		XT_CONNTRACK_ORIGDST_PORT = 1 << 9,
    32		XT_CONNTRACK_REPLSRC_PORT = 1 << 10,
    33		XT_CONNTRACK_REPLDST_PORT = 1 << 11,
    34		XT_CONNTRACK_DIRECTION    = 1 << 12,
    35		XT_CONNTRACK_STATE_ALIAS  = 1 << 13,
    36	};
    37	
    38	struct xt_conntrack_mtinfo1 {
    39		union nf_inet_addr origsrc_addr, origsrc_mask;
    40		union nf_inet_addr origdst_addr, origdst_mask;
    41		union nf_inet_addr replsrc_addr, replsrc_mask;
    42		union nf_inet_addr repldst_addr, repldst_mask;
    43		__u32 expires_min, expires_max;
    44		__u16 l4proto;
    45		__be16 origsrc_port, origdst_port;
    46		__be16 replsrc_port, repldst_port;
    47		__u16 match_flags, invert_flags;
    48		__u8 state_mask, status_mask;
    49	};
    50	
    51	struct xt_conntrack_mtinfo2 {
    52		union nf_inet_addr origsrc_addr, origsrc_mask;
    53		union nf_inet_addr origdst_addr, origdst_mask;
    54		union nf_inet_addr replsrc_addr, replsrc_mask;
    55		union nf_inet_addr repldst_addr, repldst_mask;
    56		__u32 expires_min, expires_max;
    57		__u16 l4proto;
    58		__be16 origsrc_port, origdst_port;
    59		__be16 replsrc_port, repldst_port;
    60		__u16 match_flags, invert_flags;
    61		__u16 state_mask, status_mask;
    62	};
    63	
    64	struct xt_conntrack_mtinfo3 {
    65		union nf_inet_addr origsrc_addr, origsrc_mask;
    66		union nf_inet_addr origdst_addr, origdst_mask;
    67		union nf_inet_addr replsrc_addr, replsrc_mask;
    68		union nf_inet_addr repldst_addr, repldst_mask;
    69		__u32 expires_min, expires_max;
    70		__u16 l4proto;
    71		__u16 origsrc_port, origdst_port;
    72		__u16 replsrc_port, repldst_port;
    73		__u16 match_flags, invert_flags;
    74		__u16 state_mask, status_mask;
    75		__u16 origsrc_port_high, origdst_port_high;
    76		__u16 replsrc_port_high, repldst_port_high;
    77	};
    78	
    79	#endif /*_XT_CONNTRACK_H*/