1#ifndef _XT_TCPUDP_H 2#define _XT_TCPUDP_H 3 4/* TCP matching stuff */ 5struct xt_tcp 6{ 7 u_int16_t spts[2]; /* Source port range. */ 8 u_int16_t dpts[2]; /* Destination port range. */ 9 u_int8_t option; /* TCP Option iff non-zero*/ 10 u_int8_t flg_mask; /* TCP flags mask byte */ 11 u_int8_t flg_cmp; /* TCP flags compare byte */ 12 u_int8_t invflags; /* Inverse flags */ 13}; 14 15/* Values for "inv" field in struct ipt_tcp. */ 16#define XT_TCP_INV_SRCPT 0x01 /* Invert the sense of source ports. */ 17#define XT_TCP_INV_DSTPT 0x02 /* Invert the sense of dest ports. */ 18#define XT_TCP_INV_FLAGS 0x04 /* Invert the sense of TCP flags. */ 19#define XT_TCP_INV_OPTION 0x08 /* Invert the sense of option test. */ 20#define XT_TCP_INV_MASK 0x0F /* All possible flags. */ 21 22/* UDP matching stuff */ 23struct xt_udp 24{ 25 u_int16_t spts[2]; /* Source port range. */ 26 u_int16_t dpts[2]; /* Destination port range. */ 27 u_int8_t invflags; /* Inverse flags */ 28}; 29 30/* Values for "invflags" field in struct ipt_udp. */ 31#define XT_UDP_INV_SRCPT 0x01 /* Invert the sense of source ports. */ 32#define XT_UDP_INV_DSTPT 0x02 /* Invert the sense of dest ports. */ 33#define XT_UDP_INV_MASK 0x03 /* All possible flags. */ 34 35 36#endif 37