00001 #ifndef _NETINET_TCP_H_ 00002 #define _NETINET_TCP_H_ 00003 00004 /* 00005 * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * 1. Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * 2. Redistributions in binary form must reproduce the above copyright 00014 * notice, this list of conditions and the following disclaimer in the 00015 * documentation and/or other materials provided with the distribution. 00016 * 3. Neither the name of the copyright holders nor the names of 00017 * contributors may be used to endorse or promote products derived 00018 * from this software without specific prior written permission. 00019 * 00020 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS 00021 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00022 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00023 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE 00024 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00025 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00026 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 00027 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 00028 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00029 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00030 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00031 * SUCH DAMAGE. 00032 * 00033 * For additional information see http://www.ethernut.de/ 00034 * 00035 * - 00036 * Portions Copyright (C) 2000 David J. Hudson <dave@humbug.demon.co.uk> 00037 * 00038 * This file is distributed in the hope that it will be useful, but WITHOUT 00039 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00040 * FITNESS FOR A PARTICULAR PURPOSE. 00041 * 00042 * You can redistribute this file and/or modify it under the terms of the GNU 00043 * General Public License (GPL) as published by the Free Software Foundation; 00044 * either version 2 of the License, or (at your discretion) any later version. 00045 * See the accompanying file "copying-gpl.txt" for more details. 00046 * 00047 * As a special exception to the GPL, permission is granted for additional 00048 * uses of the text contained in this file. See the accompanying file 00049 * "copying-liquorice.txt" for details. 00050 * - 00051 * Portions Copyright (c) 1983, 1993 by 00052 * The Regents of the University of California. All rights reserved. 00053 * 00054 * Redistribution and use in source and binary forms, with or without 00055 * modification, are permitted provided that the following conditions 00056 * are met: 00057 * 1. Redistributions of source code must retain the above copyright 00058 * notice, this list of conditions and the following disclaimer. 00059 * 2. Redistributions in binary form must reproduce the above copyright 00060 * notice, this list of conditions and the following disclaimer in the 00061 * documentation and/or other materials provided with the distribution. 00062 * 3. Neither the name of the University nor the names of its contributors 00063 * may be used to endorse or promote products derived from this software 00064 * without specific prior written permission. 00065 * 00066 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00067 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00068 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00069 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00070 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00071 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00072 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00073 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00074 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00075 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00076 * SUCH DAMAGE. 00077 */ 00078 00079 /* 00080 * $Log: tcp.h,v $ 00081 * Revision 1.5 2006/03/21 21:22:18 drsung 00082 * Enhancement made to TCP state machine. Now TCP options 00083 * are read from peer and at least the maximum segment size is stored. 00084 * 00085 * Revision 1.4 2005/08/02 17:46:49 haraldkipp 00086 * Major API documentation update. 00087 * 00088 * Revision 1.3 2005/04/05 17:38:45 haraldkipp 00089 * ARM7 memory alignment bugs fixed. 00090 * 00091 * Revision 1.2 2004/03/16 16:48:28 haraldkipp 00092 * Added Jan Dubiec's H8/300 port. 00093 * 00094 * Revision 1.1.1.1 2003/05/09 14:41:16 haraldkipp 00095 * Initial using 3.2.1 00096 * 00097 * Revision 1.7 2003/02/04 18:00:46 harald 00098 * Version 3 released 00099 * 00100 * Revision 1.6 2002/09/03 17:49:58 harald 00101 * *** empty log message *** 00102 * 00103 * Revision 1.5 2002/08/16 17:53:36 harald 00104 * Larger window size for better MP3 stream results 00105 * 00106 * Revision 1.4 2002/06/26 17:29:22 harald 00107 * First pre-release with 2.4 stack 00108 * 00109 */ 00110 00111 #include <sys/types.h> 00112 00118 #ifdef __cplusplus 00119 extern "C" { 00120 #endif 00121 00122 #define TH_FIN 0x01 00123 #define TH_SYN 0x02 00124 #define TH_RST 0x04 00125 #define TH_PUSH 0x08 00126 #define TH_ACK 0x10 00127 #define TH_URG 0x20 00130 #define TH_FLAGS (TH_FIN | TH_SYN | TH_RST | TH_ACK | TH_URG) 00131 00140 typedef struct __attribute__ ((packed)) tcphdr { 00141 u_short th_sport; 00142 u_short th_dport; 00143 u_long th_seq; 00144 u_long th_ack; 00145 #ifndef __BIG_ENDIAN__ 00146 #ifdef __IMAGECRAFT__ 00147 unsigned th_x2:4, 00148 th_off:4; 00149 #else /* #ifndef __BIG_ENDIAN__ */ 00150 u_char th_x2:4, 00151 th_off:4; 00152 #endif 00153 #else /* #ifndef __BIG_ENDIAN__ */ 00154 u_char th_off:4, 00155 th_x2:4; 00156 #endif 00157 u_char th_flags; 00158 u_short th_win; 00159 u_short th_sum; 00160 u_short th_urp; 00161 } TCPHDR; 00162 00163 #define TCPOPT_EOL 0 00164 #define TCPOPT_NOP 1 00165 #define TCPOPT_MAXSEG 2 00166 #define TCPOLEN_MAXSEG 4 00167 #define TCPOPT_WINDOW 3 00168 #define TCPOLEN_WINDOW 3 00178 typedef struct _TCPPSEUDOHDR { 00179 u_long tph_src; 00180 u_long tph_dst; 00181 u_char tph_mbz; 00182 u_char tph_p; 00183 u_short tph_len; 00184 u_short tph_sum; 00185 } TCPPSEUDOHDR; 00186 00187 00188 #define TCP_MSS 536 00196 #define TCP_WINSIZE 3216 00202 #define TCP_MAXWIN 65535 00203 #define TTCP_CLIENT_SND_WND 4096 00205 #define TCP_MAX_WINSHIFT 14 00207 #define TCP_MAXHLEN (0xf<<2) 00208 #define TCP_MAXOLEN (TCP_MAXHLEN - sizeof(struct tcphdr)) 00210 /* 00211 * User-settable options. 00212 */ 00213 #define TCP_NODELAY 0x01 00214 #define TCP_MAXSEG 0x02 00215 #define TCP_NOPUSH 0x04 00216 #define TCP_NOOPT 0x08 00218 #ifdef __cplusplus 00219 } 00220 #endif 00221 00222 #endif