xt_tcpudp.h

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#ifndef _XT_TCPUDP_H
#define _XT_TCPUDP_H

#include <linux/types.h>

/* TCP matching stuff */
struct xt_tcp {
    __u16 spts[2];          /* Source port range. */
    __u16 dpts[2];          /* Destination port range. */
    __u8 option;            /* TCP Option iff non-zero*/
    __u8 flg_mask;          /* TCP flags mask byte */
    __u8 flg_cmp;           /* TCP flags compare byte */
    __u8 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 {
    __u16 spts[2];          /* Source port range. */
    __u16 dpts[2];          /* Destination port range. */
    __u8 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