ipv4.h

   1 #ifndef IPV4_H
   2 #define IPV4_H
   3
   4 #include <asm/byteorder.h>
   5
   6 #include "built_in.h"
   7
   8 struct ipv4hdr {
   9 #if defined(__LITTLE_ENDIAN_BITFIELD)
  10         __extension__ uint8_t h_ihl:4,
  11                               h_version:4;
  12 #elif defined (__BIG_ENDIAN_BITFIELD)
  13         __extension__ uint8_t h_version:4,
  14                               h_ihl:4;
  15 #else
  16 # error "Please fix <asm/byteorder.h>"
  17 #endif
  18         uint8_t h_tos;
  19         uint16_t h_tot_len;
  20         uint16_t h_id;
  21         uint16_t h_frag_off;
  22         uint8_t h_ttl;
  23         uint8_t h_protocol;
  24         uint16_t h_check;
  25         uint32_t h_saddr;
  26         uint32_t h_daddr;
  27 } __packed;
  28
  29 #endif /* IPV4_H */