diff options
Diffstat (limited to 'include/linux/netfilter/xt_conntrack.h')
-rw-r--r-- | include/linux/netfilter/xt_conntrack.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/include/linux/netfilter/xt_conntrack.h b/include/linux/netfilter/xt_conntrack.h new file mode 100644 index 00000000000..34f63cf2e29 --- /dev/null +++ b/include/linux/netfilter/xt_conntrack.h @@ -0,0 +1,63 @@ +/* Header file for kernel module to match connection tracking information. + * GPL (C) 2001 Marc Boucher (marc@mbsi.ca). + */ + +#ifndef _XT_CONNTRACK_H +#define _XT_CONNTRACK_H + +#include <linux/netfilter/nf_conntrack_tuple_common.h> +#include <linux/in.h> + +#define XT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1)) +#define XT_CONNTRACK_STATE_INVALID (1 << 0) + +#define XT_CONNTRACK_STATE_SNAT (1 << (IP_CT_NUMBER + 1)) +#define XT_CONNTRACK_STATE_DNAT (1 << (IP_CT_NUMBER + 2)) +#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 + +/* This is exposed to userspace, so remains frozen in time. */ +struct ip_conntrack_old_tuple +{ + struct { + __u32 ip; + union { + __u16 all; + } u; + } src; + + struct { + __u32 ip; + union { + __u16 all; + } u; + + /* The protocol. */ + u16 protonum; + } dst; +}; + +struct xt_conntrack_info +{ + unsigned int statemask, statusmask; + + struct ip_conntrack_old_tuple tuple[IP_CT_DIR_MAX]; + struct in_addr sipmsk[IP_CT_DIR_MAX], dipmsk[IP_CT_DIR_MAX]; + + unsigned long expires_min, expires_max; + + /* Flags word */ + u_int8_t flags; + /* Inverse flags */ + u_int8_t invflags; +}; +#endif /*_XT_CONNTRACK_H*/ |