udp.h revision 2632
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 16struct 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 */ 33