xt_string.h

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#ifndef _XT_STRING_H
#define _XT_STRING_H

#include <linux/types.h>

#define XT_STRING_MAX_PATTERN_SIZE 128
#define XT_STRING_MAX_ALGO_NAME_SIZE 16

enum {
    XT_STRING_FLAG_INVERT       = 0x01,
    XT_STRING_FLAG_IGNORECASE   = 0x02
};

struct xt_string_info {
    __u16 from_offset;
    __u16 to_offset;
    char      algo[XT_STRING_MAX_ALGO_NAME_SIZE];
    char      pattern[XT_STRING_MAX_PATTERN_SIZE];
    __u8  patlen;
    union {
        struct {
            __u8  invert;
        } v0;

        struct {
            __u8  flags;
        } v1;
    } u;

    /* Used internally by the kernel */
    struct ts_config __attribute__((aligned(8))) *config;
};

#endif /*_XT_STRING_H*/