1 | /*
|
---|
2 | * TINET (TCP/IP Protocol Stack)
|
---|
3 | *
|
---|
4 | * Copyright (C) 2001-2017 by Dep. of Computer Science and Engineering
|
---|
5 | * Tomakomai National College of Technology, JAPAN
|
---|
6 | *
|
---|
7 | * ä¸è¨èä½æ¨©è
|
---|
8 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
|
---|
9 | * ã«ãã£ã¦å
|
---|
10 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
|
---|
11 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
|
---|
12 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
|
---|
13 | å¸ï¼ä»¥ä¸ï¼
|
---|
14 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
|
---|
15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
|
---|
16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
|
---|
17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
|
---|
18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
|
---|
19 | * ç¨ã§ããå½¢ã§åé
|
---|
20 | å¸ããå ´åã«ã¯ï¼åé
|
---|
21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
|
---|
22 | * è
|
---|
23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
|
---|
24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
|
---|
25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
|
---|
26 | * ç¨ã§ããªãå½¢ã§åé
|
---|
27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®æ¡ä»¶ãæºãããã¨ï¼
|
---|
28 | * (a) åé
|
---|
29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
|
---|
30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
|
---|
31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
|
---|
32 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
|
---|
33 | * 害ãããï¼ä¸è¨èä½æ¨©è
|
---|
34 | ããã³TOPPERSããã¸ã§ã¯ããå
|
---|
35 | 責ãããã¨ï¼
|
---|
36 | *
|
---|
37 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
|
---|
38 | ã
|
---|
39 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
|
---|
40 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
|
---|
41 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
|
---|
42 | *
|
---|
43 | * @(#) $Id: ip.h 317 2017-08-03 13:14:26Z coas-nagasima $
|
---|
44 | */
|
---|
45 |
|
---|
46 | /*
|
---|
47 | * Copyright (c) 1982, 1986, 1993
|
---|
48 | * The Regents of the University of California. All rights reserved.
|
---|
49 | *
|
---|
50 | * Redistribution and use in source and binary forms, with or without
|
---|
51 | * modification, are permitted provided that the following conditions
|
---|
52 | * are met:
|
---|
53 | * 1. Redistributions of source code must retain the above copyright
|
---|
54 | * notice, this list of conditions and the following disclaimer.
|
---|
55 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
56 | * notice, this list of conditions and the following disclaimer in the
|
---|
57 | * documentation and/or other materials provided with the distribution.
|
---|
58 | * 3. All advertising materials mentioning features or use of this software
|
---|
59 | * must display the following acknowledgement:
|
---|
60 | * This product includes software developed by the University of
|
---|
61 | * California, Berkeley and its contributors.
|
---|
62 | * 4. Neither the name of the University nor the names of its contributors
|
---|
63 | * may be used to endorse or promote products derived from this software
|
---|
64 | * without specific prior written permission.
|
---|
65 | *
|
---|
66 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
---|
67 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
68 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
69 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
---|
70 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
71 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
72 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
73 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
74 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
75 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
76 | * SUCH DAMAGE.
|
---|
77 | *
|
---|
78 | * @(#)ip.h 8.2 (Berkeley) 6/1/94
|
---|
79 | * $FreeBSD: src/sys/netinet/ip.h,v 1.15.2.1 1999/08/29 16:29:38 peter Exp $
|
---|
80 | */
|
---|
81 |
|
---|
82 | #ifndef _IP4_H_
|
---|
83 | #define _IP4_H_
|
---|
84 |
|
---|
85 | #include <netinet/ip6.h>
|
---|
86 |
|
---|
87 | /*
|
---|
88 | * IPv4 ã®å®ç¾©ãRFC791 åç
|
---|
89 | §
|
---|
90 | */
|
---|
91 |
|
---|
92 | #define IPV4_VERSION 4
|
---|
93 |
|
---|
94 | /*
|
---|
95 | * IPv4 ãããã®å®ç¾©
|
---|
96 | */
|
---|
97 |
|
---|
98 | typedef struct t_ip4_hdr {
|
---|
99 | uint8_t vhl; /* version << 4 | header length >> 2 */
|
---|
100 | /* length 㯠4 octets åä½ */
|
---|
101 | uint8_t type; /* type of services */
|
---|
102 | uint16_t len; /* total length */
|
---|
103 |
|
---|
104 | uint16_t id; /* identification */
|
---|
105 | uint16_t flg_off; /* fragment flag & offset */
|
---|
106 |
|
---|
107 | uint8_t ttl; /* time to live */
|
---|
108 | uint8_t proto; /* protocol */
|
---|
109 | uint16_t sum; /* checksum */
|
---|
110 |
|
---|
111 | T_IN4_ADDR src; /* source address */
|
---|
112 | T_IN4_ADDR dst; /* destination address */
|
---|
113 | } T_IP4_HDR;
|
---|
114 |
|
---|
115 | #define IP4_HDR_SIZE (sizeof(T_IP4_HDR))
|
---|
116 |
|
---|
117 | /*
|
---|
118 | * IPv4 ãããæ§é ä½ã¡ã³ãã¢ã¯ã»ã¹ãã¯ã
|
---|
119 | */
|
---|
120 |
|
---|
121 | #define IP4_MAKE_VHL(v,hl) ((uint8_t)(((uint8_t)(v)<<4)|(hl)))
|
---|
122 | #define IP4_VHL_V(vhl) ((uint8_t)((uint8_t)(vhl)>>4))
|
---|
123 | #define IP4_VHL_HL(vhl) ((uint8_t)((vhl)&0x0f))
|
---|
124 |
|
---|
125 | #define IP4_MAKE_FLGOFF(f,o) ((uint16_t)((f)|(o)))
|
---|
126 | #define IP4_FLGOFF_FLG(f) ((uint16_t)((f)&~IP4_OFFMASK))
|
---|
127 | #define IP4_FLGOFF_OFF(o) ((uint16_t)((o)&IP4_OFFMASK))
|
---|
128 |
|
---|
129 | /*
|
---|
130 | * IPv4 ãããã®ãã£ã¼ã«ãã®å¤ã®å®ç¾©
|
---|
131 | */
|
---|
132 |
|
---|
133 | #define IP4_VHL_BORING UINT_C(0x45) /* ãªãã·ã§ã³ããªã VHL å¤ */
|
---|
134 | #define IP4_RF UINT_C(0x8000) /* off: äºç´ */
|
---|
135 | #define IP4_DF UINT_C(0x4000) /* off: åå²ç¦æ¢ */
|
---|
136 | #define IP4_MF UINT_C(0x2000) /* off: åå²ãã */
|
---|
137 | #define IP4_OFFMASK UINT_C(0x1fff) /* ãªãã»ããé¨ã®ãã¹ã¯å¤ */
|
---|
138 |
|
---|
139 | /*
|
---|
140 | * å¶éå¤
|
---|
141 | */
|
---|
142 |
|
---|
143 | #define IP4_MAXPACKET UINT_C(65535) /* æ大ãã±ãããµã¤ãº */
|
---|
144 | #define IP4_MAXTTL UINT_C(255) /* TTL æå¤§å¤ */
|
---|
145 | #define IP4_DEFTTL UINT_C(64) /* TTL è¦å®å¤ (RFC1340) */
|
---|
146 | #define IP4_FRAGTTL UINT_C(60) /* åå²ããããã¼ã¿ã°ã©ã ã®çåæéï¼ç§ï¼*/
|
---|
147 | #define IP4_MSS UINT_C(576) /* æ大ã»ã°ã¡ã³ããµã¤ãºã®è¦å®å¤ */
|
---|
148 |
|
---|
149 | /* IPv4 㨠IPv6 ãã³ã³ãã¤ã«æã«é¸æããããã®ãã¯ã */
|
---|
150 |
|
---|
151 | #if !defined(_IP6_CFG) && defined(_IP4_CFG)
|
---|
152 |
|
---|
153 | #define IP_HDR_SIZE IP4_HDR_SIZE
|
---|
154 | #define T_IP_HDR T_IP4_HDR
|
---|
155 | #define IP_DEFTTL IP4_DEFTTL
|
---|
156 |
|
---|
157 | #endif /* of #if !defined(_IP6_CFG) && defined(_IP4_CFG) */
|
---|
158 |
|
---|
159 | #endif /* of #ifndef _IP4_H_ */
|
---|