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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. | |
2f5f8996 | 13 | * 3. Neither the name of the University nor the names of its contributors |
f0cbd3ec FB |
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 | }; | |
429d0a3d | 43 | #define ti_mbuf ti_i.ih_mbuf.mptr |
f0cbd3ec FB |
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 | ||
429d0a3d BS |
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 | ||
f0cbd3ec FB |
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 |