LXR qemu/slirp/tcpip.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 *      @(#)tcpip.h     8.1 (Berkeley) 6/10/93
  30 * tcpip.h,v 1.3 1994/08/21 05:27:40 paul Exp
  31 */
  32
  33#ifndef _TCPIP_H_
  34#define _TCPIP_H_
  35
  36/*
  37 * Tcp+ip header, after ip options removed.
  38 */
  39struct tcpiphdr {
  40        struct  ipovly ti_i;            /* overlaid ip structure */
  41        struct  tcphdr ti_t;            /* tcp header */
  42};
  43#define ti_mbuf         ti_i.ih_mbuf.mptr
  44#define ti_x1           ti_i.ih_x1
  45#define ti_pr           ti_i.ih_pr
  46#define ti_len          ti_i.ih_len
  47#define ti_src          ti_i.ih_src
  48#define ti_dst          ti_i.ih_dst
  49#define ti_sport        ti_t.th_sport
  50#define ti_dport        ti_t.th_dport
  51#define ti_seq          ti_t.th_seq
  52#define ti_ack          ti_t.th_ack
  53#define ti_x2           ti_t.th_x2
  54#define ti_off          ti_t.th_off
  55#define ti_flags        ti_t.th_flags
  56#define ti_win          ti_t.th_win
  57#define ti_sum          ti_t.th_sum
  58#define ti_urp          ti_t.th_urp
  59
  60#define tcpiphdr2qlink(T) ((struct qlink*)(((char*)(T)) - sizeof(struct qlink)))
  61#define qlink2tcpiphdr(Q) ((struct tcpiphdr*)(((char*)(Q)) + sizeof(struct qlink)))
  62#define tcpiphdr_next(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->next)
  63#define tcpiphdr_prev(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->prev)
  64#define tcpfrag_list_first(T) qlink2tcpiphdr((T)->seg_next)
  65#define tcpfrag_list_end(F, T) (tcpiphdr2qlink(F) == (struct qlink*)(T))
  66#define tcpfrag_list_empty(T) ((T)->seg_next == (struct tcpiphdr*)(T))
  67
  68/*
  69 * Just a clean way to get to the first byte
  70 * of the packet
  71 */
  72struct tcpiphdr_2 {
  73        struct tcpiphdr dummy;
  74        char first_char;
  75};
  76
  77#endif
  78