b41649989c
Extend the xt_conntrack match revision 1 by port matching (all four
{orig,repl}{src,dst}) and by packet direction matching.
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
84 lines
2 KiB
C
84 lines
2 KiB
C
/* Header file for kernel module to match connection tracking information.
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* GPL (C) 2001 Marc Boucher (marc@mbsi.ca).
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*/
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#ifndef _XT_CONNTRACK_H
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#define _XT_CONNTRACK_H
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#include <linux/netfilter/nf_conntrack_tuple_common.h>
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#define XT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1))
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#define XT_CONNTRACK_STATE_INVALID (1 << 0)
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#define XT_CONNTRACK_STATE_SNAT (1 << (IP_CT_NUMBER + 1))
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#define XT_CONNTRACK_STATE_DNAT (1 << (IP_CT_NUMBER + 2))
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#define XT_CONNTRACK_STATE_UNTRACKED (1 << (IP_CT_NUMBER + 3))
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/* flags, invflags: */
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enum {
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XT_CONNTRACK_STATE = 1 << 0,
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XT_CONNTRACK_PROTO = 1 << 1,
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XT_CONNTRACK_ORIGSRC = 1 << 2,
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XT_CONNTRACK_ORIGDST = 1 << 3,
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XT_CONNTRACK_REPLSRC = 1 << 4,
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XT_CONNTRACK_REPLDST = 1 << 5,
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XT_CONNTRACK_STATUS = 1 << 6,
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XT_CONNTRACK_EXPIRES = 1 << 7,
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XT_CONNTRACK_ORIGSRC_PORT = 1 << 8,
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XT_CONNTRACK_ORIGDST_PORT = 1 << 9,
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XT_CONNTRACK_REPLSRC_PORT = 1 << 10,
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XT_CONNTRACK_REPLDST_PORT = 1 << 11,
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XT_CONNTRACK_DIRECTION = 1 << 12,
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};
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/* This is exposed to userspace, so remains frozen in time. */
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struct ip_conntrack_old_tuple
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{
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struct {
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__be32 ip;
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union {
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__u16 all;
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} u;
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} src;
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struct {
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__be32 ip;
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union {
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__u16 all;
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} u;
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/* The protocol. */
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__u16 protonum;
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} dst;
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};
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struct xt_conntrack_info
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{
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unsigned int statemask, statusmask;
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struct ip_conntrack_old_tuple tuple[IP_CT_DIR_MAX];
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struct in_addr sipmsk[IP_CT_DIR_MAX], dipmsk[IP_CT_DIR_MAX];
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unsigned long expires_min, expires_max;
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/* Flags word */
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u_int8_t flags;
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/* Inverse flags */
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u_int8_t invflags;
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};
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struct xt_conntrack_mtinfo1 {
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union nf_inet_addr origsrc_addr, origsrc_mask;
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union nf_inet_addr origdst_addr, origdst_mask;
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union nf_inet_addr replsrc_addr, replsrc_mask;
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union nf_inet_addr repldst_addr, repldst_mask;
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u_int32_t expires_min, expires_max;
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u_int16_t l4proto;
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__be16 origsrc_port, origdst_port;
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__be16 replsrc_port, repldst_port;
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u_int16_t match_flags, invert_flags;
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u_int8_t state_mask, status_mask;
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};
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#endif /*_XT_CONNTRACK_H*/
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