LXR qemu/slirp/udp.h

   1/*
   2 * Copyright (c) 1982, 1986, 1993
   3 *      The Regents of the University of California.  All rights reserved.
   4 *
   5 * Redistribution and use in source and binary forms, with or without
   6 * modification, are permitted provided that the following conditions
   7 * are met:
   8 * 1. Redistributions of source code must retain the above copyright
   9 *    notice, this list of conditions and the following disclaimer.
  10 * 2. Redistributions in binary form must reproduce the above copyright
  11 *    notice, this list of conditions and the following disclaimer in the
  12 *    documentation and/or other materials provided with the distribution.
  13 * 3. Neither the name of the University nor the names of its contributors
  14 *    may be used to endorse or promote products derived from this software
  15 *    without specific prior written permission.
  16 *
  17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27 * SUCH DAMAGE.
  28 *
  29 *      @(#)udp.h       8.1 (Berkeley) 6/10/93
  30 * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
  31 */
  32
  33#ifndef _UDP_H_
  34#define _UDP_H_
  35
  36#define UDP_TTL 0x60
  37#define UDP_UDPDATALEN 16192
  38
  39/*
  40 * Udp protocol header.
  41 * Per RFC 768, September, 1981.
  42 */
  43struct udphdr {
  44    uint16_t uh_sport;          /* source port */
  45    uint16_t uh_dport;          /* destination port */
  46    int16_t  uh_ulen;           /* udp length */
  47    uint16_t uh_sum;            /* udp checksum */
  48};
  49
  50/*
  51 * UDP kernel structures and variables.
  52 */
  53struct udpiphdr {
  54                struct  ipovly ui_i;            /* overlaid ip structure */
  55                struct  udphdr ui_u;            /* udp header */
  56};
  57#define ui_mbuf         ui_i.ih_mbuf.mptr
  58#define ui_x1           ui_i.ih_x1
  59#define ui_pr           ui_i.ih_pr
  60#define ui_len          ui_i.ih_len
  61#define ui_src          ui_i.ih_src
  62#define ui_dst          ui_i.ih_dst
  63#define ui_sport        ui_u.uh_sport
  64#define ui_dport        ui_u.uh_dport
  65#define ui_ulen         ui_u.uh_ulen
  66#define ui_sum          ui_u.uh_sum
  67
  68/*
  69 * Names for UDP sysctl objects
  70 */
  71#define UDPCTL_CHECKSUM         1       /* checksum UDP packets */
  72#define UDPCTL_MAXID            2
  73
  74struct mbuf;
  75
  76void udp_init(Slirp *);
  77void udp_cleanup(Slirp *);
  78void udp_input(register struct mbuf *, int);
  79int udp_output(struct socket *, struct mbuf *, struct sockaddr_in *);
  80int udp_attach(struct socket *);
  81void udp_detach(struct socket *);
  82struct socket * udp_listen(Slirp *, uint32_t, u_int, uint32_t, u_int,
  83                           int);
  84int udp_output2(struct socket *so, struct mbuf *m,
  85                struct sockaddr_in *saddr, struct sockaddr_in *daddr,
  86                int iptos);
  87#endif
  88