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      1 #ifndef _LIBXTC_H
      2 #define _LIBXTC_H
      3 /* Library which manipulates filtering rules. */
      4 
      5 #include <libiptc/ipt_kernel_headers.h>
      6 #include <linux/netfilter/x_tables.h>
      7 
      8 #ifdef __cplusplus
      9 extern "C" {
     10 #endif
     11 
     12 #ifndef XT_MIN_ALIGN
     13 /* xt_entry has pointers and u_int64_t's in it, so if you align to
     14    it, you'll also align to any crazy matches and targets someone
     15    might write */
     16 #define XT_MIN_ALIGN (__alignof__(struct xt_entry))
     17 #endif
     18 
     19 #ifndef XT_ALIGN
     20 #define XT_ALIGN(s) (((s) + ((XT_MIN_ALIGN)-1)) & ~((XT_MIN_ALIGN)-1))
     21 #endif
     22 
     23 #define XTC_LABEL_ACCEPT  "ACCEPT"
     24 #define XTC_LABEL_DROP    "DROP"
     25 #define XTC_LABEL_QUEUE   "QUEUE"
     26 #define XTC_LABEL_RETURN  "RETURN"
     27 
     28 
     29 #ifdef __cplusplus
     30 }
     31 #endif
     32 
     33 #endif /* _LIBXTC_H */
     34