root/include/linux/netfilter/xt_tcpudp.h

INCLUDED FROM

#ifndef _XT_TCPUDP_H
#define _XT_TCPUDP_H

/* TCP matching stuff */
struct xt_tcp
{
        u_int16_t spts[2];                      /* Source port range. */
        u_int16_t dpts[2];                      /* Destination port range. */
        u_int8_t option;                        /* TCP Option iff non-zero*/
        u_int8_t flg_mask;                      /* TCP flags mask byte */
        u_int8_t flg_cmp;                       /* TCP flags compare byte */
        u_int8_t invflags;                      /* Inverse flags */
};

/* Values for "inv" field in struct ipt_tcp. */
#define XT_TCP_INV_SRCPT        0x01    /* Invert the sense of source ports. */
#define XT_TCP_INV_DSTPT        0x02    /* Invert the sense of dest ports. */
#define XT_TCP_INV_FLAGS        0x04    /* Invert the sense of TCP flags. */
#define XT_TCP_INV_OPTION       0x08    /* Invert the sense of option test. */
#define XT_TCP_INV_MASK         0x0F    /* All possible flags. */

/* UDP matching stuff */
struct xt_udp
{
        u_int16_t spts[2];                      /* Source port range. */
        u_int16_t dpts[2];                      /* Destination port range. */
        u_int8_t invflags;                      /* Inverse flags */
};

/* Values for "invflags" field in struct ipt_udp. */
#define XT_UDP_INV_SRCPT        0x01    /* Invert the sense of source ports. */
#define XT_UDP_INV_DSTPT        0x02    /* Invert the sense of dest ports. */
#define XT_UDP_INV_MASK 0x03    /* All possible flags. */


#endif