linux-user: stack_base is now mandatory on all targets
[qemu.git] / 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 */
39 struct 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 */
72 struct tcpiphdr_2 {
73 struct tcpiphdr dummy;
74 char first_char;
75 };
76
77 #endif