ipv6.h

   1 #ifndef IPV6_H
   2 #define IPV6_H
   3
   4 #include <asm/byteorder.h>
   5
   6 #include "built_in.h"
   7
   8 /*
   9  * IPv6 fixed header
  10  *
  11  * BEWARE, it is incorrect. The first 4 bits of flow_lbl
  12  * are glued to priority now, forming "class".
  13  */
  14 struct ipv6hdr {
  15 #if defined(__LITTLE_ENDIAN_BITFIELD)
  16         __extension__ uint8_t priority:4,
  17                               version:4;
  18 #elif defined(__BIG_ENDIAN_BITFIELD)
  19         __extension__ uint8_t version:4,
  20                               priority:4;
  21 #else
  22 # error "Please fix <asm/byteorder.h>"
  23 #endif
  24         uint8_t flow_lbl[3];
  25         uint16_t payload_len;
  26         uint8_t nexthdr;
  27         uint8_t hop_limit;
  28         struct in6_addr saddr;
  29         struct in6_addr daddr;
  30 } __packed;
  31
  32 #endif /* IPV6_H */