| 1 | /*
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| 2 | * TINET (TCP/IP Protocol Stack)
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| 3 | *
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| 4 | * Copyright (C) 2001-2017 by Dep. of Computer Science and Engineering
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| 5 | * Tomakomai National College of Technology, JAPAN
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| 6 | *
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| 7 | * ä¸è¨èä½æ¨©è
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| 8 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 9 | * ã«ãã£ã¦å
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| 10 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 11 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 12 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 13 | å¸ï¼ä»¥ä¸ï¼
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| 14 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 19 | * ç¨ã§ããå½¢ã§åé
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| 20 | å¸ããå ´åã«ã¯ï¼åé
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| 21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 22 | * è
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| 23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 26 | * ç¨ã§ããªãå½¢ã§åé
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| 27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®æ¡ä»¶ãæºãããã¨ï¼
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| 28 | * (a) åé
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| 29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 32 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 33 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 34 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 35 | 責ãããã¨ï¼
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| 36 | *
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| 37 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 38 | ã
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| 39 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 40 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 41 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 42 | *
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| 43 | * @(#) $Id: tcp.h 313 2017-07-23 04:50:32Z coas-nagasima $
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| 44 | */
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| 45 |
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| 46 | /*
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| 47 | * Copyright (c) 1982, 1986, 1993
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| 48 | * The Regents of the University of California. All rights reserved.
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| 49 | *
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| 50 | * Redistribution and use in source and binary forms, with or without
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| 51 | * modification, are permitted provided that the following conditions
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| 52 | * are met:
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| 53 | * 1. Redistributions of source code must retain the above copyright
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| 54 | * notice, this list of conditions and the following disclaimer.
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| 55 | * 2. Redistributions in binary form must reproduce the above copyright
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| 56 | * notice, this list of conditions and the following disclaimer in the
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| 57 | * documentation and/or other materials provided with the distribution.
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| 58 | * 3. All advertising materials mentioning features or use of this software
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| 59 | * must display the following acknowledgement:
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| 60 | * This product includes software developed by the University of
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| 61 | * California, Berkeley and its contributors.
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| 62 | * 4. Neither the name of the University nor the names of its contributors
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| 63 | * may be used to endorse or promote products derived from this software
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| 64 | * without specific prior written permission.
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| 65 | *
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| 66 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 67 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 68 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 69 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 70 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 71 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 72 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 73 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 74 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 75 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 76 | * SUCH DAMAGE.
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| 77 | *
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| 78 | * @(#)tcp.h 8.1 (Berkeley) 6/10/93
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| 79 | * $FreeBSD: src/sys/netinet/tcp.h,v 1.10.2.1 1999/08/29 16:29:52 peter Exp $
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| 80 | */
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| 81 |
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| 82 | #ifndef _TCP_H_
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| 83 | #define _TCP_H_
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| 84 |
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| 85 | /*
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| 86 | * TCP ããããRFC 793 åç
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| 87 | §
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| 88 | */
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| 89 |
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| 90 | typedef struct t_tcp_hdr {
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| 91 | uint16_t sport; /* éä¿¡å
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| 92 | ãã¼ãçªå· */
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| 93 | uint16_t dport; /* å®å
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| 94 | ãã¼ãçªå· */
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| 95 |
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| 96 | uint32_t seq; /* SEQ çªå· */
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| 97 |
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| 98 | uint32_t ack; /* ACK çªå· */
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| 99 |
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| 100 | uint8_t doff; /* ãã¼ã¿ãªãã»ãã(ä¸ä½4ããã) */
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| 101 | uint8_t flags; /* ãã©ã°(ä¸ä½6ããã) */
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| 102 | uint16_t win; /* ã¦ã£ã³ããµã¤ãº */
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| 103 |
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| 104 | uint16_t sum; /* ãã§ãã¯ãµã */
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| 105 | uint16_t urp; /* ç·æ¥ãã¤ã³ã¿ */
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| 106 | } T_TCP_HDR;
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| 107 |
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| 108 | #define TCP_HDR_SIZE (sizeof(T_TCP_HDR))
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| 109 |
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| 110 | /*
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| 111 | * TCP ãããæ§é ä½ã¡ã³ãã¢ã¯ã»ã¹ãã¯ã
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| 112 | */
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| 113 |
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| 114 | #define TCP_MAKE_DATA_OFF(o) ((uint8_t)(((uint8_t)(o) << 2) & 0xf0))
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| 115 | #define TCP_DATA_OFF(o) (((uint8_t)(o) & UINT_C(0xf0)) >> 2)
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| 116 | #define TCP_HDR_LEN(o) (TCP_DATA_OFF(o))
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| 117 |
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| 118 | /*
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| 119 | * TCP ãããã®ãã©ã°ãã£ã¼ã«ãã®å¤ã®å®ç¾©
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| 120 | */
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| 121 |
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| 122 | #define TCP_FLG_FIN UINT_C(0x01) /* FIN: æçµ */
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| 123 | #define TCP_FLG_SYN UINT_C(0x02) /* SYN: åæ */
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| 124 | #define TCP_FLG_RST UINT_C(0x04) /* RST: ã³ãã¯ã·ã§ã³ã®ãªã»ãã */
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| 125 | #define TCP_FLG_PUSH UINT_C(0x08) /* PUSH:ããã·ã¥æ©è½ */
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| 126 | #define TCP_FLG_ACK UINT_C(0x10) /* ACK: è¯å®å¿ç */
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| 127 | #define TCP_FLG_URG UINT_C(0x20) /* URG: ç·æ¥æ
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| 128 | å ± */
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| 129 |
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| 130 | /*
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| 131 | * TCP ãªãã·ã§ã³ã®å®ç¾©
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| 132 | */
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| 133 |
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| 134 | /* ãªãã·ã§ã³ã®å */
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| 135 |
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| 136 | #define TCP_OPT_EOL UINT_C(0) /* æçµ */
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| 137 | #define TCP_OPT_NOP UINT_C(1) /* ä½ãããªã */
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| 138 | #define TCP_OPT_MAXSEG UINT_C(2) /* æ大ã»ã°ã¡ã³ãé· */
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| 139 | #define TCP_OPT_WINDOW UINT_C(3) /* ã¦ã£ã³ãã¹ã±ã¼ãªã³ã° */
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| 140 | #define TCP_OPT_SACK_PERM UINT_C(4) /* é¸æ ACK è¨±å¯ */
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| 141 | #define TCP_OPT_SACK UINT_C(5) /* é¸æ ACK */
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| 142 | #define TCP_OPT_TIMESTAMP UINT_C(8) /* ã¿ã¤ã ã¹ã¿ã³ã */
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| 143 | #define TCP_OPT_CC UINT_C(11) /* æ¥ç¶ã«ã¦ã³ã */
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| 144 | #define TCP_OPT_CCNEW UINT_C(12) /* æ¥ç¶ã«ã¦ã³ã */
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| 145 | #define TCP_OPT_CCECHO UINT_C(13) /* æ¥ç¶ã«ã¦ã³ã */
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| 146 |
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| 147 | /* ãªãã·ã§ã³ã®é·ã */
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| 148 |
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| 149 | #define TCP_OPT_LEN_MAXSEG 4 /* æ大ã»ã°ã¡ã³ãé· */
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| 150 | #define TCP_OPT_LEN_WINDOW 3 /* ã¦ã£ã³ãã¹ã±ã¼ãªã³ã° */
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| 151 | #define TCP_OPT_LEN_SACK_PERM 4 /* é¸æ ACK è¨±å¯ */
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| 152 | #define TCP_OPT_LEN_SACK 5 /* é¸æ ACK */
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| 153 | #define TCP_OPT_LEN_TIMESTAMP 10 /* ã¿ã¤ã ã¹ã¿ã³ã */
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| 154 | #define TCP_OPT_LEN_CC 6 /* æ¥ç¶ã«ã¦ã³ã */
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| 155 | #define TCP_OPT_LEN_CCNEW 6 /* æ¥ç¶ã«ã¦ã³ã */
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| 156 | #define TCP_OPT_LEN_CCECHO 6 /* æ¥ç¶ã«ã¦ã³ã */
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| 157 |
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| 158 | /*
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| 159 | * TCP æ大ã»ã°ã¡ã³ããµã¤ãº
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| 160 | */
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| 161 |
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| 162 | /*
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| 163 | * IPv4 ã® TCP æ大ã»ã°ã¡ã³ããµã¤ãº
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| 164 | * IP4_MSS 㯠576 ã§ãæ¨æºã® IPv4 ãããé· (20) ã¨
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| 165 | * TCP ãããé· (20) ãå¼ããå¤ 536 ã§ãããã512 ãæ¨æºã¨ããã
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| 166 | */
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| 167 |
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| 168 | #define TCP_MSS UINT_C(512)
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| 169 |
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| 170 | /*
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| 171 | * IPv6 ã® TCP æ大ã»ã°ã¡ã³ããµã¤ãº
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| 172 | * IPV6_MMTU 㯠1280 ã§ãæ¨æºã® IPv6 ãããé· (40) ã¨
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| 173 | * TCP ãããé· (20) ãå¼ããå¤ 1220 ã§ãããã1024 ãæ¨æºã¨ããã
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| 174 | */
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| 175 |
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| 176 | #define TCP6_MSS UINT_C(1024)
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| 177 |
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| 178 | /*
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| 179 | * TCP æå°ã»ã°ã¡ã³ããµã¤ãº
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| 180 | *
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| 181 | * 256ï¼æå°ãªã³ã¯ MTUï¼- 40 = 216
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| 182 | */
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| 183 |
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| 184 | #define TCP_MINMSS UINT_C(216)
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| 185 |
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| 186 | /*
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| 187 | * TCP æ大ã¦ã£ã³ãã¦ãµã¤ãº
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| 188 | */
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| 189 |
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| 190 | #define MAX_TCP_WIN_SIZE UINT_C(65535)
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| 191 |
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| 192 | #endif /* of #ifndef _TCP_H_ */
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