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[NETFILTER]: xt_conntrack: add port and direction matching

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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>
This commit is contained in:
Jan Engelhardt
2008-01-31 03:58:24 -08:00
committed by David S. Miller
parent 41d0cdedd5
commit b41649989c
2 changed files with 63 additions and 17 deletions
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include/linux/netfilter/xt_conntrack.h
+18 -12
View File
@@ -6,9 +6,6 @@
#define _XT_CONNTRACK_H
#include <linux/netfilter/nf_conntrack_tuple_common.h>
#ifdef __KERNEL__
# include <linux/in.h>
#endif
#define XT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1))
#define XT_CONNTRACK_STATE_INVALID (1 << 0)
@@ -18,14 +15,21 @@
#define XT_CONNTRACK_STATE_UNTRACKED (1 << (IP_CT_NUMBER + 3))
/* flags, invflags: */
#define XT_CONNTRACK_STATE 0x01
#define XT_CONNTRACK_PROTO 0x02
#define XT_CONNTRACK_ORIGSRC 0x04
#define XT_CONNTRACK_ORIGDST 0x08
#define XT_CONNTRACK_REPLSRC 0x10
#define XT_CONNTRACK_REPLDST 0x20
#define XT_CONNTRACK_STATUS 0x40
#define XT_CONNTRACK_EXPIRES 0x80
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,
};
/* This is exposed to userspace, so remains frozen in time. */
struct ip_conntrack_old_tuple
@@ -70,8 +74,10 @@ struct xt_conntrack_mtinfo1 {
union nf_inet_addr repldst_addr, repldst_mask;
u_int32_t expires_min, expires_max;
u_int16_t l4proto;
__be16 origsrc_port, origdst_port;
__be16 replsrc_port, repldst_port;
u_int16_t match_flags, invert_flags;
u_int8_t state_mask, status_mask;
u_int8_t match_flags, invert_flags;
};
#endif /*_XT_CONNTRACK_H*/