minix/include/net/gen/ip_hdr.h

   1 /*
   2 server/ip/gen/ip_hdr.h
   3 */
   4
   5 #ifndef __SERVER__IP__GEN__HDR_H__
   6 #define __SERVER__IP__GEN__HDR_H__
   7
   8 typedef struct ip_hdr
   9 {
  10         u8_t ih_vers_ihl,
  11                 ih_tos;
  12         u16_t ih_length,
  13                 ih_id,
  14                 ih_flags_fragoff;
  15         u8_t ih_ttl,
  16                 ih_proto;
  17         u16_t ih_hdr_chk;
  18         ipaddr_t ih_src,
  19                 ih_dst;
  20 } ip_hdr_t;
  21
  22 #define IH_IHL_MASK     0xf
  23 #define IH_VERSION_MASK 0xf
  24 #define IH_FRAGOFF_MASK 0x1fff
  25 #define IH_MORE_FRAGS   0x2000
  26 #define IH_DONT_FRAG    0x4000
  27 #define IH_FLAGS_UNUSED 0x8000
  28
  29 #define IP_OPT_COPIED   0x80
  30 #define IP_OPT_NUMBER   0x1f
  31
  32 #define IP_OPT_EOL      0x00    /* End of Options List, RFC-791 */
  33 #define IP_OPT_NOP      0x01    /* No Operation, RFC-791 */
  34 #define IP_OPT_RR       0x07    /* Record Route, RFC-791 */
  35 #define IP_OPT_TS       0x44    /* Timestamp, RFC-791 */
  36 #define IP_OPT_SEC      0x82    /* Security, RFC-1108 */
  37 #define IP_OPT_LSRR     0x83    /* Loose Source Route, RFC-791 */
  38 #define IP_OPT_SSRR     0x89    /* Strict Source Route, RFC-791 */
  39 #define IP_OPT_RTRALT   0x94    /* Router Alert, RFC-2113 */
  40
  41 #define IP_OPT_RR_MIN           4
  42
  43 #endif /* __SERVER__IP__GEN__HDR_H__ */
  44
  45 /*
  46  * $PchId: ip_hdr.h,v 1.5 2002/06/10 07:11:46 philip Exp $
  47  */