xt_u32.h

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#ifndef _XT_U32_H
#define _XT_U32_H 1

#include <linux/types.h>

enum xt_u32_ops {
    XT_U32_AND,
    XT_U32_LEFTSH,
    XT_U32_RIGHTSH,
    XT_U32_AT,
};

struct xt_u32_location_element {
    __u32 number;
    __u8 nextop;
};

struct xt_u32_value_element {
    __u32 min;
    __u32 max;
};

/*
 * Any way to allow for an arbitrary number of elements?
 * For now, I settle with a limit of 10 each.
 */
#define XT_U32_MAXSIZE 10

struct xt_u32_test {
    struct xt_u32_location_element location[XT_U32_MAXSIZE+1];
    struct xt_u32_value_element value[XT_U32_MAXSIZE+1];
    __u8 nnums;
    __u8 nvalues;
};

struct xt_u32 {
    struct xt_u32_test tests[XT_U32_MAXSIZE+1];
    __u8 ntests;
    __u8 invert;
};

#endif /* _XT_U32_H */