#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*/