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 78
