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: ip6_var.h 388 2019-05-22 11:25:18Z coas-nagasima $
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44 | */
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45 |
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46 | /* $FreeBSD: src/sys/netinet6/ip6_var.h,v 1.10 2002/10/16 01:54:45 sam Exp $ */
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47 | /* $KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $ */
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48 |
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49 | /*
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50 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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51 | * All rights reserved.
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52 | *
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53 | * Redistribution and use in source and binary forms, with or without
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54 | * modification, are permitted provided that the following conditions
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55 | * are met:
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56 | * 1. Redistributions of source code must retain the above copyright
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57 | * notice, this list of conditions and the following disclaimer.
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58 | * 2. Redistributions in binary form must reproduce the above copyright
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59 | * notice, this list of conditions and the following disclaimer in the
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60 | * documentation and/or other materials provided with the distribution.
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61 | * 3. Neither the name of the project nor the names of its contributors
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62 | * may be used to endorse or promote products derived from this software
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63 | * without specific prior written permission.
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64 | *
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65 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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66 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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67 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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68 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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69 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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70 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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71 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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72 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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73 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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74 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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75 | * SUCH DAMAGE.
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76 | */
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77 |
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78 | /*
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79 | * Copyright (c) 1982, 1986, 1993
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80 | * The Regents of the University of California. All rights reserved.
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81 | *
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82 | * Redistribution and use in source and binary forms, with or without
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83 | * modification, are permitted provided that the following conditions
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84 | * are met:
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85 | * 1. Redistributions of source code must retain the above copyright
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86 | * notice, this list of conditions and the following disclaimer.
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87 | * 2. Redistributions in binary form must reproduce the above copyright
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88 | * notice, this list of conditions and the following disclaimer in the
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89 | * documentation and/or other materials provided with the distribution.
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90 | * 3. All advertising materials mentioning features or use of this software
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91 | * must display the following acknowledgement:
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92 | * This product includes software developed by the University of
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93 | * California, Berkeley and its contributors.
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94 | * 4. Neither the name of the University nor the names of its contributors
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95 | * may be used to endorse or promote products derived from this software
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96 | * without specific prior written permission.
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97 | *
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98 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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99 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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100 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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101 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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102 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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103 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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104 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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105 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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106 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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107 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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108 | * SUCH DAMAGE.
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109 | *
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110 | * @(#)ip_var.h 8.1 (Berkeley) 6/10/93
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111 | */
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112 |
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113 | #ifndef _IP6_VAR_H_
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114 | #define _IP6_VAR_H_
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115 |
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116 | /*
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117 | * IPv6 ãããã»ãã¤ãã¼ãã¢ã¯ã»ã¹ãã¯ã
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118 | */
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119 |
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120 | #define IF_IP6_HDR_SIZE (IF_HDR_SIZE + IP6_HDR_SIZE)
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121 |
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122 | #define GET_IP6_HDR(nbuf) ((T_IP6_HDR*)((nbuf)->buf + IF_HDR_SIZE))
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123 | #define GET_IP6_SDU(nbuf) ((uint8_t*)((nbuf)->buf) + GET_IF_IP6_HDR_SIZE(nbuf))
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124 | #define GET_IP6_NEXT_HDR(nbuf) ((uint8_t*)((nbuf)->buf) + IF_IP6_HDR_SIZE)
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125 |
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126 | #define GET_IP6_HDR_SIZE(nbuf) (get_ip6_hdr_size(nbuf))
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127 | #define GET_IP6_SDU_SIZE(nbuf) (ntohs(GET_IP6_HDR(nbuf)->plen))
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128 | #define GET_IF_IP6_HDR_SIZE(nbuf) (IF_HDR_SIZE + (GET_IP6_HDR_SIZE(nbuf)))
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129 |
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130 | #define SET_IP6_CF(nbuf,cf) (GET_IP6_HDR(nbuf)->vcf=htonl(IP6_MAKE_VCF(IP6_VCF_V(ntohl(GET_IP6_HDR(nbuf)->vcf)),cf)))
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131 | #define SET_IP6_SDU_SIZE(nbuf,slen) (GET_IP6_HDR(nbuf)->plen=htons(slen))
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132 |
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133 | /* ip6_output ã®ãã©ã° */
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134 |
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135 | #define IPV6_OUT_FLG_DAD 0x0100 /* éè¤ã¢ãã¬ã¹æ¤åº */
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136 | #define IPV6_OUT_FLG_HOP_LIMIT 0x0200 /* ããããªãããæå® */
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137 |
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138 | /* ããããªããããã©ã°ãä»ãæãããããªãããå¤ãæä½ãããã¯ã */
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139 |
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140 | #define IPV6_OUT_GET_HOP_LIMIT(f) ((f)&0x00ff)
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141 | #define IPV6_OUT_SET_HOP_LIMIT(f,l) ((f)|(l))
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142 |
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143 | /*
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144 | * ip6_unknown_opt -- æªç¥ã®ãªãã·ã§ã³ã®å¦ç
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145 | *
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146 | * æ»ãå¤:
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147 | *
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148 | * 0 ä»¥ä¸ æ£å¸¸ããªãã·ã§ã³é·ã
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149 | * IP6_OPT_RET_ERR (-1) ã¨ã©ã¼ãå¼åºå´ã§ãããã¯ã¼ã¯ãããã¡ãéæ¾ããã
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150 | * IP6_OPT_RET_REL (-2) ã¨ã©ã¼ããããã¯ã¼ã¯ãããã¡ã¯éæ¾ããã¦ããã
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151 | */
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152 |
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153 | #define IP6_OPT_RET_ERR (-1)
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154 | #define IP6_OPT_RET_REL (-2)
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155 |
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156 | /*
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157 | * IPv6 ã® MMTU ãµã¤ãºã®ãããã¯ã¼ã¯ãããã¡
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158 | */
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159 |
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160 | #if defined(IF_HDR_SIZE)
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161 |
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162 | typedef struct t_net_buf_ipv6_mmtu {
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163 | uint16_t len; /* ãã¼ã¿ã®é·ã */
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164 | uint8_t idix; /* mpfid ã®ã¤ã³ããã¯ã¹ */
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165 | uint8_t unit; /* ã¤ã³ã¿ãã§ã¼ã¹çªå· */
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166 | #ifdef IF_ETHER_NIC_NET_BUF_ALIGN
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167 | uint8_t nalign[IF_ETHER_NIC_NET_BUF_ALIGN];
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168 | #endif
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169 | #if CPU_NET_ALIGN == 4 && IF_HDR_ALIGN != 4
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170 | uint8_t halign[4 - IF_HDR_ALIGN];
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171 | #endif
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172 | uint8_t buf[IF_HDR_SIZE + IPV6_MMTU];
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173 | /* ãããã¡æ¬ä½ */
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174 | } T_NET_BUF_IPV6_MMTU;
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175 |
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176 | #endif /* of #if defined(IF_HDR_SIZE) */
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177 |
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178 | /*
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179 | * 65536 ãªã¯ããããµã¤ãºã®ãããã¯ã¼ã¯ãããã¡
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180 | */
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181 |
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182 | typedef struct t_net_buf6_65536 {
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183 | uint16_t len; /* ãã¼ã¿ã®é·ã */
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184 | uint8_t idix; /* mpfid ã®ã¤ã³ããã¯ã¹ */
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185 | uint8_t flags; /* ãã©ã° */
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186 | #ifdef IF_ETHER_NIC_NET_BUF_ALIGN
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187 | uint8_t nalign[IF_ETHER_NIC_NET_BUF_ALIGN];
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188 | #endif
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189 | #if CPU_NET_ALIGN == 4 && IF_HDR_ALIGN != 4
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190 | uint8_t halign[4 - IF_HDR_ALIGN];
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191 | #endif
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192 | uint8_t buf[IF_IP6_HDR_SIZE + 65536];
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193 | /* ãããã¡æ¬ä½ */
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194 | #if defined(IF_PDU_HDR_PADDING)
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195 | uint8_t padding[IF_PDU_HDR_PADDING];
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196 | #endif /* ãããã®ä½å */
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197 | } T_NET_BUF6_65536;
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198 |
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199 | #ifdef IP6_CFG_FRAGMENT
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200 |
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201 | /*
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202 | * åæ§æãã¥ã¼ç¨ IPv6 ãããã®å®ç¾©
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203 | */
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204 |
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205 | typedef struct t_qip6_hdr {
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206 | uint32_t vcf; /* Version: 4 bit */
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207 | /* Traffic Class: 8 bit */
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208 | /* Flow Label: 20 bit */
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209 | uint16_t plen; /* Payload Length */
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210 | uint8_t next; /* Next Header */
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211 | uint8_t hlim; /* Hop Limit */
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212 | T_IN6_ADDR src; /* Source Address */
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213 | T_NET_BUF *next_frag; /* 次㮠IPv6 ãã©ã°ã¡ã³ã */
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214 | uint16_t foff; /* æçãããã®ãªãã»ãã */
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215 | uint16_t flen; /* æçé· */
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216 | uint16_t ftim; /* åæ§æã¿ã¤ã ã¢ã¦ã */
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217 | uint16_t dummy1;
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218 | uint8_t dummy2[sizeof(T_IN6_ADDR) - (sizeof(T_NET_BUF*) + sizeof(uint16_t) * 4)];
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219 | } __attribute__((packed, aligned(2)))T_QIP6_HDR;
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220 |
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221 | #define QIP6_HDR_SIZE (sizeof(T_QIP6_HDR))
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222 | #define IF_QIP6_HDR_SIZE (IF_HDR_SIZE + QIP6_HDR_SIZE)
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223 |
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224 | #define GET_QIP6_HDR(nbuf) ((T_QIP6_HDR*)((nbuf)->buf + IF_HDR_SIZE))
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225 | #define GET_QIP6_SDU(nbuf) ((uint8_t*)(nbuf)->buf + GET_IF_QIP6_HDR_SIZE(nbuf))
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226 |
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227 | #define GET_QIP6_HDR_SIZE(iph) ((uint8_t)IP6_VHL_HL((iph)->vhl) << 2)
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228 | #define GET_IF_QIP6_HDR_SIZE(nbuf) (IF_HDR_SIZE + (GET_QIP6_HDR_SIZE(GET_QIP6_HDR(nbuf))))
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229 |
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230 | /*
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231 | * ãã¼ã¿ã°ã©ã åæ§æç¨ãããã¯ã¼ã¯ãããã¡
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232 | */
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233 |
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234 | typedef struct t_net_buf6_reassm {
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235 | uint16_t len; /* ãã¼ã¿ã®é·ã */
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236 | uint8_t idix; /* mpfid ã®ã¤ã³ããã¯ã¹ */
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237 | uint8_t flags; /* ãã©ã° */
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238 | #ifdef IF_ETHER_NIC_NET_BUF_ALIGN
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239 | uint8_t nalign[IF_ETHER_NIC_NET_BUF_ALIGN];
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240 | #endif
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241 | #if CPU_NET_ALIGN == 4 && IF_HDR_ALIGN != 4
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242 | uint8_t align[4 - IF_HDR_ALIGN];
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243 | #endif
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244 | uint8_t buf[IP6_CFG_FRAG_REASSM_SIZE];
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245 | /* ãããã¡æ¬ä½ */
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246 | } T_NET_BUF6_REASSM;
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247 |
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248 | #endif /* of #ifdef IP6_CFG_FRAGMENT */
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249 |
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250 | /*
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251 | * TCP ã®åæ§æãã¥ã¼ã«ããã IPv6 ãããã®å®ç¾©
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252 | */
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253 |
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254 | typedef struct t_ip6_tcp_q_hdr {
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255 | uint8_t vc; /* Version: 4 bit */
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256 | uint8_t cf; /* Traffic Class: 8 bit */
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257 | /* Flow Label: 4 bit (20 bit) */
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258 | uint16_t thoff; /* TCP ãããã®ãªãã»ãã */
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259 | uint16_t plen; /* Payload Length */
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260 | uint8_t next; /* Next Header */
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261 | uint8_t hlim; /* Hop Limit */
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262 | T_IN6_ADDR src; /* Source Address */
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263 | T_IN6_ADDR dst; /* Destination Address */
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264 | } __attribute__((packed, aligned(2))) T_IP6_TCP_Q_HDR;
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265 |
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266 | #ifdef SUPPORT_MIB
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267 |
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268 | /*
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269 | * SNMP 㮠管çæ
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270 | å ±ãã¼ã¹ (MIB)
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271 | */
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272 |
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273 | typedef struct t_in6_ifstat {
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274 | uint32_t ipv6IfStatsInReceives;
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275 | uint32_t ipv6IfStatsInHdrErrors;
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276 | /* uint32_t ipv6IfStatsInTooBigErrors;*/
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277 | /* uint32_t ipv6IfStatsInNoRoutes;*/
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278 | uint32_t ipv6IfStatsInAddrErrors;
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279 | uint32_t ipv6IfStatsInUnknownProtos;
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280 | uint32_t ipv6IfStatsInTruncatedPkts;
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281 | /* uint32_t ipv6IfStatsInDiscards;*/
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282 | /* uint32_t ipv6IfStatsInDelivers;*/
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283 | /* uint32_t ipv6IfStatsOutForwDatagrams;*/
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284 | uint32_t ipv6IfStatsOutRequests;
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285 | uint32_t ipv6IfStatsOutDiscards;
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286 | uint32_t ipv6IfStatsOutFragOKs;
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287 | uint32_t ipv6IfStatsOutFragFails;
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288 | uint32_t ipv6IfStatsOutFragCreates;
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289 | uint32_t ipv6IfStatsReasmReqds;
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290 | uint32_t ipv6IfStatsReasmOKs;
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291 | uint32_t ipv6IfStatsReasmFails;
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292 | uint32_t ipv6IfStatsInMcastPkts;
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293 | uint32_t ipv6IfStatsOutMcastPkts;
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294 | } T_IN6_IFSTAT;
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295 |
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296 | extern T_IN6_IFSTAT in6_ifstat;
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297 |
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298 | #endif /* of #ifdef SUPPORT_MIB */
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299 |
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300 | /*
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301 | * å¤æ°
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302 | */
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303 |
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304 | extern uint8_t ip6_defhlim;
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305 |
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306 | /*
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307 | * é¢æ°
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308 | */
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309 |
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310 | extern ER ip6_output (T_NET_BUF *output, uint16_t flags, TMO tmout);
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311 | extern void ip6_init (void);
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312 | extern uint8_t *ip6_get_prev_hdr (T_NET_BUF *nbuf, uint_t off);
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313 | extern uint_t get_ip6_hdr_size (T_NET_BUF *nbuf);
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314 | extern ER_UINT ip6_nexthdr (T_NET_BUF *nbuf, uint_t off, uint_t proto, uint_t *nextp);
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315 | extern ER_UINT ip6_lasthdr (T_NET_BUF *nbuf, uint_t off, uint_t proto, uint_t *nextp);
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316 | extern ER_UINT ip6_unknown_opt (T_NET_BUF *input, uint8_t *opt);
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317 | extern uint_t dest6_input (T_NET_BUF **inputp, uint_t *offp, uint_t *nextp);
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318 | extern uint_t route6_input (T_NET_BUF **inputp, uint_t *offp, uint_t *nextp);
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319 | extern uint_t frag6_input (T_NET_BUF **inputp, uint_t *offp, uint_t *nextp);
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320 | extern void frag6_timer (void);
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321 | extern ER ip6_remove_exthdrs (T_NET_BUF *nbuf);
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322 |
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323 | #endif /* of #ifndef _IP6_VAR_H_ */
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