ext/dnet/udp.h

   1 /*
   2  * udp.h
   3  *
   4  * User Datagram Protocol (RFC 768).
   5  *
   6  * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
   7  *
   8  * $Id: udp.h,v 1.8 2002/04/02 05:05:39 dugsong Exp $
   9  */
  10
  11 #ifndef DNET_UDP_H
  12 #define DNET_UDP_H
  13
  14 #define UDP_HDR_LEN     8
  15
  16 struct udp_hdr {
  17         uint16_t        uh_sport;       /* source port */
  18         uint16_t        uh_dport;       /* destination port */
  19         uint16_t        uh_ulen;        /* udp length (including header) */
  20         uint16_t        uh_sum;         /* udp checksum */
  21 };
  22
  23 #define UDP_PORT_MAX    65535
  24
  25 #define udp_pack_hdr(hdr, sport, dport, ulen) do {              \
  26         struct udp_hdr *udp_pack_p = (struct udp_hdr *)(hdr);   \
  27         udp_pack_p->uh_sport = htons(sport);                    \
  28         udp_pack_p->uh_dport = htons(dport);                    \
  29         udp_pack_p->uh_ulen = htons(ulen);                      \
  30 } while (0)
  31
  32 #endif /* DNET_UDP_H */