1 /* Header file for kernel module to match connection tracking information. 2 * GPL (C) 2001 Marc Boucher (marc@mbsi.ca). 3 */ 4 5 #ifndef _XT_CONNTRACK_H 6 #define _XT_CONNTRACK_H 7 8 #include <linux/netfilter/nf_conntrack_tuple_common.h> 9 10 #define XT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1)) 11 #define XT_CONNTRACK_STATE_INVALID (1 << 0) 12 13 #define XT_CONNTRACK_STATE_SNAT (1 << (IP_CT_NUMBER + 1)) 14 #define XT_CONNTRACK_STATE_DNAT (1 << (IP_CT_NUMBER + 2)) 15 #define XT_CONNTRACK_STATE_UNTRACKED (1 << (IP_CT_NUMBER + 3)) 16 17 /* flags, invflags: */ 18 enum { 19 XT_CONNTRACK_STATE = 1 << 0, 20 XT_CONNTRACK_PROTO = 1 << 1, 21 XT_CONNTRACK_ORIGSRC = 1 << 2, 22 XT_CONNTRACK_ORIGDST = 1 << 3, 23 XT_CONNTRACK_REPLSRC = 1 << 4, 24 XT_CONNTRACK_REPLDST = 1 << 5, 25 XT_CONNTRACK_STATUS = 1 << 6, 26 XT_CONNTRACK_EXPIRES = 1 << 7, 27 XT_CONNTRACK_ORIGSRC_PORT = 1 << 8, 28 XT_CONNTRACK_ORIGDST_PORT = 1 << 9, 29 XT_CONNTRACK_REPLSRC_PORT = 1 << 10, 30 XT_CONNTRACK_REPLDST_PORT = 1 << 11, 31 XT_CONNTRACK_DIRECTION = 1 << 12, 32 }; 33 34 /* This is exposed to userspace, so remains frozen in time. */ 35 struct ip_conntrack_old_tuple 36 { 37 struct { 38 __be32 ip; 39 union { 40 __u16 all; 41 } u; 42 } src; 43 44 struct { 45 __be32 ip; 46 union { 47 __u16 all; 48 } u; 49 50 /* The protocol. */ 51 __u16 protonum; 52 } dst; 53 }; 54 55 struct xt_conntrack_info 56 { 57 unsigned int statemask, statusmask; 58 59 struct ip_conntrack_old_tuple tuple[IP_CT_DIR_MAX]; 60 struct in_addr sipmsk[IP_CT_DIR_MAX], dipmsk[IP_CT_DIR_MAX]; 61 62 unsigned long expires_min, expires_max; 63 64 /* Flags word */ 65 u_int8_t flags; 66 /* Inverse flags */ 67 u_int8_t invflags; 68 }; 69 70 struct xt_conntrack_mtinfo1 { 71 union nf_inet_addr origsrc_addr, origsrc_mask; 72 union nf_inet_addr origdst_addr, origdst_mask; 73 union nf_inet_addr replsrc_addr, replsrc_mask; 74 union nf_inet_addr repldst_addr, repldst_mask; 75 u_int32_t expires_min, expires_max; 76 u_int16_t l4proto; 77 __be16 origsrc_port, origdst_port; 78 __be16 replsrc_port, repldst_port; 79 u_int16_t match_flags, invert_flags; 80 u_int8_t state_mask, status_mask; 81 }; 82 83 #endif /*_XT_CONNTRACK_H*/ 84