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: in6_subr.c 388 2019-05-22 11:25:18Z coas-nagasima $
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44 | */
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45 |
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46 | /*
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47 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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48 | * 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. Neither the name of the project nor the names of its contributors
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59 | * may be used to endorse or promote products derived from this software
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60 | * without specific prior written permission.
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61 | *
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62 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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63 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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64 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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65 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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66 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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67 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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68 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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69 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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70 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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71 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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72 | * SUCH DAMAGE.
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73 | */
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74 |
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75 | /*
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76 | * Copyright (c) 1985, 1986, 1993
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77 | * The Regents of the University of California. All rights reserved.
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78 | *
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79 | * Redistribution and use in source and binary forms, with or without
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80 | * modification, are permitted provided that the following conditions
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81 | * are met:
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82 | * 1. Redistributions of source code must retain the above copyright
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83 | * notice, this list of conditions and the following disclaimer.
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84 | * 2. Redistributions in binary form must reproduce the above copyright
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85 | * notice, this list of conditions and the following disclaimer in the
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86 | * documentation and/or other materials provided with the distribution.
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87 | * 3. All advertising materials mentioning features or use of this software
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88 | * must display the following acknowledgement:
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89 | * This product includes software developed by the University of
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90 | * California, Berkeley and its contributors.
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91 | * 4. Neither the name of the University nor the names of its contributors
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92 | * may be used to endorse or promote products derived from this software
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93 | * without specific prior written permission.
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94 | *
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95 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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96 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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97 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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98 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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99 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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100 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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101 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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102 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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103 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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104 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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105 | * SUCH DAMAGE.
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106 | */
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107 |
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108 | #include <string.h>
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109 |
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110 | #ifdef TARGET_KERNEL_ASP
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111 |
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112 | #include <kernel.h>
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113 | #include <sil.h>
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114 | #include "kernel_cfg.h"
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115 |
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116 | #endif /* of #ifdef TARGET_KERNEL_ASP */
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117 |
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118 | #ifdef TARGET_KERNEL_JSP
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119 |
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120 | #include <s_services.h>
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121 | #include <t_services.h>
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122 | #include "kernel_id.h"
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123 | #include "tinet_id.h"
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124 |
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125 | #endif /* of #ifdef TARGET_KERNEL_JSP */
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126 |
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127 | #include <tinet_defs.h>
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128 | #include <tinet_config.h>
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129 |
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130 | #include <net/if.h>
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131 | #include <net/if_loop.h>
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132 | #include <net/if_ppp.h>
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133 | #include <net/ethernet.h>
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134 | #include <net/if_arp.h>
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135 | #include <net/net.h>
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136 | #include <net/net_endian.h>
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137 | #include <net/net_var.h>
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138 | #include <net/net_buf.h>
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139 | #include <net/net_timer.h>
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140 |
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141 | #include <netinet/in.h>
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142 | #include <netinet/in_var.h>
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143 | #include <netinet/ip.h>
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144 | #include <netinet/ip_var.h>
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145 |
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146 | #include <netinet6/nd6.h>
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147 | #include <netinet6/ah.h>
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148 |
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149 | #include <net/if_var.h>
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150 |
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151 | /*
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152 | * in6_make_ipv4mapped -- IPv4 å°å½±ã¢ãã¬ã¹ãçæããã
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153 | *
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154 | * 注æ:
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155 | * src ã¯ãã¹ããã¤ããªã¼ãã¼
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156 | *
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157 | */
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158 |
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159 | T_IN6_ADDR *
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160 | in6_make_ipv4mapped (T_IN6_ADDR *dst, T_IN4_ADDR src)
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161 | {
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162 | dst->s6_addr32[0] = ULONG_C(0x00000000);
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163 | dst->s6_addr32[1] = ULONG_C(0x00000000);
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164 | dst->s6_addr32[2] = IPV6_ADDR_INT32_0000FFFF;
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165 | dst->s6_addr32[3] = htonl(src);
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166 |
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167 | return dst;
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168 | }
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169 |
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170 | #ifdef _IP6_CFG
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171 |
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172 | #if NUM_IN6_REDIRECT_ROUTE_ENTRY > 0
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173 |
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174 | /*
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175 | * in6_rtinit -- ã«ã¼ãã£ã³ã°è¡¨ãåæåããã
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176 | */
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177 |
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178 | void
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179 | in6_rtinit (void)
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180 | {
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181 | int_t ix;
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182 |
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183 | for (ix = 0; ix < NUM_IN6_STATIC_ROUTE_ENTRY; ix ++)
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184 | routing6_tbl[ix].flags = IN_RTF_DEFINED;
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185 |
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186 | for ( ; ix < NUM_IN6_ROUTE_ENTRY; ix ++)
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187 | routing6_tbl[ix].flags = 0;
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188 | }
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189 |
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190 | /*
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191 | * in6_rtnewentry -- æ°ããã¨ã³ããªãç²å¾ããã
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192 | */
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193 |
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194 | T_IN6_RTENTRY *
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195 | in6_rtnewentry (uint8_t flags, uint32_t tmo)
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196 | {
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197 | SYSTIM now;
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198 | T_IN6_RTENTRY *rt, *frt = NULL;
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199 | int_t ix;
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200 |
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201 | /* 空ãã¨ã³ããªãæ¢ãã*/
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202 | for (ix = NUM_IN6_STATIC_ROUTE_ENTRY; ix < NUM_IN6_ROUTE_ENTRY; ix ++) {
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203 | rt = &routing6_tbl[ix];
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204 | if ((routing6_tbl[ix].flags & IN_RTF_DEFINED) == 0) {
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205 | frt = rt;
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206 | break;
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207 | }
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208 | }
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209 |
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210 | /* expire ã®åä½ã¯ [s]ã*/
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211 | syscall(get_tim(&now));
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212 | now /= SYSTIM_HZ;
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213 |
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214 | if (frt == NULL) {
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215 | /* 空ãããªããã°ãæå¹æéããã£ã¨ãçãã¨ã³ããªã空ãã«ããã*/
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216 | T_IN6_RTENTRY *srt = NULL;
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217 | int_t diff, sdiff = INT_MAX;
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218 |
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219 | syscall(wai_sem(SEM_IN6_ROUTING_TBL));
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220 | for (ix = NUM_IN6_STATIC_ROUTE_ENTRY; ix < NUM_IN6_ROUTE_ENTRY; ix ++) {
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221 | rt = &routing6_tbl[ix];
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222 | diff = (int_t)(rt->expire - now);
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223 | if (diff <= 0) { /* rt->expire <= now */
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224 | /* æ¢ã«ãæå¹æéãéãã¦ããã*/
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225 | frt = rt;
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226 | break;
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227 | }
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228 | else if (diff < sdiff) {
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229 | srt = rt;
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230 | sdiff = diff;
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231 | }
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232 | }
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233 | if (frt == NULL)
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234 | frt = srt;
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235 | frt->flags = 0;
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236 | syscall(sig_sem(SEM_IN6_ROUTING_TBL));
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237 | }
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238 |
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239 | frt->flags = (uint8_t)(flags | IN_RTF_DEFINED);
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240 | frt->expire = now + tmo / SYSTIM_HZ;
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241 | return frt;
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242 | }
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243 |
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244 | /*
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245 | * in6_rttimer -- ã«ã¼ãã£ã³ã°è¡¨ã®ç®¡çã¿ã¤ãã¼
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246 | */
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247 |
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248 | void
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249 | in6_rttimer (void)
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250 | {
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251 | SYSTIM now;
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252 | int_t ix;
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253 |
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254 | /* expire ã®åä½ã¯ [s]ã*/
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255 | syscall(get_tim(&now));
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256 | now /= SYSTIM_HZ;
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257 |
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258 | syscall(wai_sem(SEM_IN6_ROUTING_TBL));
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259 | for (ix = NUM_IN6_STATIC_ROUTE_ENTRY; ix < NUM_IN6_ROUTE_ENTRY; ix ++)
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260 | if ((routing6_tbl[ix].flags & IN_RTF_DEFINED) &&
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261 | (int_t)(routing6_tbl[ix].expire - now) <= 0)
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262 | routing6_tbl[ix].flags = 0;
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263 | syscall(sig_sem(SEM_IN6_ROUTING_TBL));
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264 | }
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265 |
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266 | #endif /* of #if NUM_IN6_REDIRECT_ROUTE_ENTRY > 0 */
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267 |
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268 | #if NUM_IN6_HOSTCACHE_ENTRY > 0
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269 |
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270 | /*
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271 | * ãã¹ããã£ãã·ã¥
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272 | */
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273 |
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274 | static T_IN6_HOSTCACHE_ENTRY in6_hostcache[NUM_IN6_HOSTCACHE_ENTRY];
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275 |
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276 | #endif /* of #if NUM_IN6_HOSTCACHE_ENTRY > 0 */
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277 |
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278 | /*
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279 | * in6_lookup_ifaddr -- ãããã¯ã¼ã¯ã¤ã³ã¿ãã§ã¼ã¹ã«å²ãå½ã¦ããã¦ããã¢ãã¬ã¹ãæ¢ç´¢ããã
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280 | */
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281 |
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282 | T_IN6_IFADDR *
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283 | in6_lookup_ifaddr (T_IFNET *ifp, const T_IN6_ADDR *addr)
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284 | {
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285 | int_t ix;
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286 |
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287 | for (ix = NUM_IN6_IFADDR_ENTRY; ix -- > 0; ) {
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288 | if ((ifp->in6_ifaddrs[ix].flags & IN6_IFF_DEFINED) &&
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289 | IN6_ARE_ADDR_EQUAL(addr, &ifp->in6_ifaddrs[ix].addr))
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290 | return &ifp->in6_ifaddrs[ix];
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291 | }
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292 | return NULL;
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293 | }
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294 |
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295 | /*
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296 | * in6_lookup_multi -- ãããã¯ã¼ã¯ã¤ã³ã¿ãã§ã¼ã¹ã®ãã«ããã£ã¹ãã¢ãã¬ã¹ãæ¤ç´¢ããã
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297 | */
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298 |
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299 | bool_t
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300 | in6_lookup_multi (T_IFNET *ifp, const T_IN6_ADDR *maddr)
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301 | {
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302 | int_t ix;
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303 |
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304 | for (ix = MAX_IN6_MADDR_CNT; ix -- > 0; )
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305 | if (IN6_ARE_ADDR_EQUAL(maddr, &ifp->in6_maddrs[ix]))
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306 | return true;
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307 | return false;
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308 | }
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309 |
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310 | /*
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311 | * in6_set_header -- IPv6 ããããè¨å®ããã
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312 | */
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313 |
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314 | ER
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315 | in6_set_header (T_NET_BUF *nbuf, uint_t len,
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316 | const T_IN6_ADDR *dstaddr, const T_IN6_ADDR *srcaddr,
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317 | uint8_t next, uint8_t hlim)
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318 | {
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319 | T_IFNET *ifp = IF_GET_IFNET();
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320 | T_IP6_HDR *ip6h;
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321 | T_IN6_IFADDR *ia;
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322 |
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323 | /*
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324 | * å®å
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325 | ã¢ãã¬ã¹ã«ãµããããéä¿¡å
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326 | ã¢ãã¬ã¹ãã
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327 | * ãããã¯ã¼ã¯ã¤ã³ã¿ãã§ã¼ã¹ããæ¢ç´¢ãã¦å©ç¨ããã
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328 | */
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329 | if (srcaddr == NULL || !IN6_IS_ADDR_UNSPECIFIED(srcaddr))
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330 | ;
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331 | else if ((ia = in6_ifawithifp(ifp, dstaddr)) == NULL)
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332 | return E_SYS;
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333 | else
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334 | srcaddr = &ia->addr;
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335 |
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336 | /* IPv6 ããããè¨å®ããã*/
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337 | ip6h = GET_IP6_HDR(nbuf);
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338 | ip6h->vcf = htonl(IP6_MAKE_VCF(IPV6_VERSION, 0));
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339 | ip6h->plen = htons(len);
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340 | ip6h->next = next;
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341 | ip6h->hlim = hlim;
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342 |
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343 | if (dstaddr == NULL)
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344 | memset(&ip6h->dst, 0, sizeof(T_IN6_ADDR));
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345 | else
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346 | memcpy(&ip6h->dst, dstaddr, sizeof(T_IN6_ADDR));
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347 |
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348 | if (srcaddr == NULL)
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349 | memset(&ip6h->src, 0, sizeof(T_IN6_ADDR));
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350 | else
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351 | memcpy(&ip6h->src, srcaddr, sizeof(T_IN6_ADDR));
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352 |
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353 | return E_OK;
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354 | }
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355 |
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356 | /*
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357 | * in6_get_datagram -- IPv6 ãã¼ã¿ã°ã©ã ãç²å¾ããããããè¨å®ããã
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358 | */
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359 |
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360 | ER
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361 | in6_get_datagram (T_NET_BUF **nbuf, uint_t len, uint_t maxlen,
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362 | const T_IN6_ADDR *dstaddr, const T_IN6_ADDR *srcaddr,
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363 | uint8_t next, uint8_t hlim, ATR nbatr, TMO tmout)
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364 | {
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365 | ER error;
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366 | uint_t align;
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367 |
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368 | /* ãã¼ã¿é·ã¯ 4 ãªã¯ãããå¢çã«èª¿æ´ããã */
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369 | align = (len + 3) >> 2 << 2;
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370 |
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371 | /* ãããã¯ã¼ã¯ãããã¡ãç²å¾ããã */
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372 | if ((error = tget_net_buf_ex(nbuf, IF_IP6_HDR_SIZE + align,
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373 | IF_IP6_HDR_SIZE + maxlen, nbatr, tmout)) != E_OK)
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374 | return error;
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375 |
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376 | /*
|
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377 | * ãã大ããªãµã¤ãºã®ãããã¯ã¼ã¯ãããã¡ãç²å¾ããå ´åã®ã¿é·ãã調æ´ããã
|
---|
378 | * ããå°ããªãµã¤ãºã®ãããã¯ã¼ã¯ãããã¡ã®ç²å¾ã¯ãéä¿¡ã¦ã£ã³ããããã¡ã®
|
---|
379 | * çã³ãã¼æ©è½ã§ä½¿ç¨ãããå®éã«éä¿¡ããã¾ã§ããã¼ã¿ãµã¤ãºã¯æ±ºå®ã§ããªãã
|
---|
380 | */
|
---|
381 | if ((nbatr & NBA_SEARCH_ASCENT) != 0)
|
---|
382 | (*nbuf)->len = IF_IP6_HDR_SIZE + len;
|
---|
383 |
|
---|
384 | /* IPv6 ããããè¨å®ããã*/
|
---|
385 | if ((error = in6_set_header(*nbuf, len, dstaddr, srcaddr, next, hlim)) != E_OK) {
|
---|
386 | syscall(rel_net_buf(*nbuf));
|
---|
387 | *nbuf = NULL;
|
---|
388 | return error;
|
---|
389 | }
|
---|
390 |
|
---|
391 | /* 4 ãªã¯ãããå¢çã¾ã§ããã£ã³ã°ã§åããã*/
|
---|
392 | if (align > len)
|
---|
393 | memset(GET_IP6_SDU(*nbuf) + len, 0, align - len);
|
---|
394 |
|
---|
395 | return E_OK;
|
---|
396 | }
|
---|
397 |
|
---|
398 | /*
|
---|
399 | * in6_get_maxnum_ifaddr -- ã¤ã³ã¿ãã§ã¼ã¹ã«è¨å®å¯è½ãªæ大ã¢ãã¬ã¹æ°ãè¿ãã
|
---|
400 | */
|
---|
401 |
|
---|
402 | uint_t
|
---|
403 | in6_get_maxnum_ifaddr (void)
|
---|
404 | {
|
---|
405 | return NUM_IN6_IFADDR_ENTRY;
|
---|
406 | }
|
---|
407 |
|
---|
408 | /*
|
---|
409 | * in6_get_ifaddr -- ã¤ã³ã¿ãã§ã¼ã¹ã«è¨å®ããã¦ããã¢ãã¬ã¹ãè¿ãã
|
---|
410 | */
|
---|
411 |
|
---|
412 | const T_IN6_ADDR *
|
---|
413 | in6_get_ifaddr (int_t index)
|
---|
414 | {
|
---|
415 | T_IFNET *ifp = IF_GET_IFNET();
|
---|
416 |
|
---|
417 | if (index < NUM_IN6_IFADDR_ENTRY &&
|
---|
418 | (ifp->in6_ifaddrs[index].flags & IN6_IFF_DEFINED))
|
---|
419 | return &ifp->in6_ifaddrs[index].addr;
|
---|
420 | else
|
---|
421 | return NULL;
|
---|
422 | }
|
---|
423 |
|
---|
424 | /*
|
---|
425 | * ipv62str -- IPv6 ã¢ãã¬ã¹ãæååã«å¤æããã
|
---|
426 | */
|
---|
427 |
|
---|
428 | char *
|
---|
429 | ipv62str (char *buf, const T_IN6_ADDR *p_addr)
|
---|
430 | {
|
---|
431 | static char addr_sbuf[NUM_IPV6ADDR_STR_BUFF][sizeof("0123:4567:89ab:cdef:0123:4567:255.255.255.255")];
|
---|
432 | static int_t bix = NUM_IPV6ADDR_STR_BUFF;
|
---|
433 |
|
---|
434 | bool_t omit = false, zero = false;
|
---|
435 | char *start;
|
---|
436 | int_t ix, len6;
|
---|
437 |
|
---|
438 | if (buf == NULL) {
|
---|
439 | syscall(wai_sem(SEM_IP2STR_BUFF_LOCK));
|
---|
440 | buf = addr_sbuf[-- bix];
|
---|
441 | if (bix <= 0)
|
---|
442 | bix = NUM_IPV6ADDR_STR_BUFF;
|
---|
443 | syscall(sig_sem(SEM_IP2STR_BUFF_LOCK));
|
---|
444 | }
|
---|
445 |
|
---|
446 | start = buf;
|
---|
447 | if (p_addr == NULL || IN6_IS_ADDR_UNSPECIFIED(p_addr)) {
|
---|
448 | *buf ++ = '0';
|
---|
449 | *buf ++ = ':';
|
---|
450 | *buf ++ = ':';
|
---|
451 | *buf ++ = '0';
|
---|
452 | }
|
---|
453 | else {
|
---|
454 | if (IN6_IS_ADDR_V4MAPPED(p_addr))
|
---|
455 | len6 = sizeof(T_IN6_ADDR) / 2 - 2;
|
---|
456 | else
|
---|
457 | len6 = sizeof(T_IN6_ADDR) / 2;
|
---|
458 | for (ix = 0; ix < len6; ix ++) {
|
---|
459 | if (omit) {
|
---|
460 | buf += convert_hexdigit(buf, ntohs(p_addr->s6_addr16[ix]), 16, 0, ' ');
|
---|
461 | if (ix < 7)
|
---|
462 | *buf ++ = ':';
|
---|
463 | }
|
---|
464 | else if (ix > 0 && ix < 7 && p_addr->s6_addr16[ix] == 0)
|
---|
465 | zero = true;
|
---|
466 | else {
|
---|
467 | if (zero) {
|
---|
468 | omit = true;
|
---|
469 | *buf ++ = ':';
|
---|
470 | }
|
---|
471 | buf += convert_hexdigit(buf, ntohs(p_addr->s6_addr16[ix]), 16, 0, ' ');
|
---|
472 | if (ix < 7)
|
---|
473 | *buf ++ = ':';
|
---|
474 | }
|
---|
475 | }
|
---|
476 |
|
---|
477 | if (len6 == sizeof(T_IN6_ADDR) / 2 - 2) {
|
---|
478 | T_IN4_ADDR ipv4addr;
|
---|
479 |
|
---|
480 | ipv4addr = ntohl(p_addr->s6_addr32[3]);
|
---|
481 | buf += convert_hexdigit(buf, (uint_t)((ipv4addr >> 24) & 0xff), 10, 0, ' ');
|
---|
482 | *(buf ++) = '.';
|
---|
483 | buf += convert_hexdigit(buf, (uint_t)((ipv4addr >> 16) & 0xff), 10, 0, ' ');
|
---|
484 | *(buf ++) = '.';
|
---|
485 | buf += convert_hexdigit(buf, (uint_t)((ipv4addr >> 8) & 0xff), 10, 0, ' ');
|
---|
486 | *(buf ++) = '.';
|
---|
487 | buf += convert_hexdigit(buf, (uint_t)((ipv4addr ) & 0xff), 10, 0, ' ');
|
---|
488 | }
|
---|
489 | }
|
---|
490 | *buf = '\0';
|
---|
491 | return start;
|
---|
492 | }
|
---|
493 |
|
---|
494 | /*
|
---|
495 | * in6_cksum -- IPv6 ã®ãã©ã³ã¹ãã¼ã層ãããã®ãã§ãã¯ãµã ãè¨ç®ããã
|
---|
496 | *
|
---|
497 | * 注æ: æ»ãå¤ã¯ãããã¯ã¼ã¯ãã¤ããªã¼ã
|
---|
498 | */
|
---|
499 |
|
---|
500 | uint16_t
|
---|
501 | in6_cksum (T_NET_BUF *nbuf, uint8_t proto, uint_t off, uint_t len)
|
---|
502 | {
|
---|
503 | uint32_t sum;
|
---|
504 | uint_t align;
|
---|
505 |
|
---|
506 | /* 4 ãªã¯ãããå¢çã®ãã¼ã¿é· */
|
---|
507 | align = (len + 3) >> 2 << 2;
|
---|
508 |
|
---|
509 | /* 4 ãªã¯ãããå¢çã¾ã§ããã£ã³ã°ã§åããã*/
|
---|
510 | if (align > len)
|
---|
511 | memset((uint8_t*)nbuf->buf + off + len, 0, align - len);
|
---|
512 |
|
---|
513 | sum = in_cksum_sum(nbuf->buf + off, align)
|
---|
514 | + in_cksum_sum(&GET_IP6_HDR(nbuf)->src, sizeof(T_IN6_ADDR) * 2)
|
---|
515 | + len + proto;
|
---|
516 | sum = in_cksum_carry(sum);
|
---|
517 |
|
---|
518 | return ~htons((uint16_t)sum);
|
---|
519 | }
|
---|
520 |
|
---|
521 | /*
|
---|
522 | * get_ip6_hdr_size -- æ¡å¼µããããå«ãã IPv6 ãããé·ãè¿ãã
|
---|
523 | */
|
---|
524 |
|
---|
525 | uint_t
|
---|
526 | get_ip6_hdr_size (T_NET_BUF *nbuf)
|
---|
527 | {
|
---|
528 | T_IP6_HDR *iph = GET_IP6_HDR(nbuf);
|
---|
529 | uint_t size = IP6_HDR_SIZE, hsize;
|
---|
530 | uint8_t curr = iph->next, next;
|
---|
531 | uint8_t *hdr = ((uint8_t *)iph) + IP6_HDR_SIZE;
|
---|
532 |
|
---|
533 | while (1) {
|
---|
534 | next = *hdr;
|
---|
535 | if (curr ==IPPROTO_NONE) /* 次ãããç¡ã */
|
---|
536 | break;
|
---|
537 | else if (curr == IPPROTO_FRAGMENT) /* æçå */
|
---|
538 | hsize = sizeof(T_IP6_FRAG_HDR);
|
---|
539 | else if (curr == IPPROTO_AH) /* IPv6 èªè¨¼ */
|
---|
540 | hsize = (((T_IP6_AH_HDR *)hdr)->len + 2) * 4;
|
---|
541 | else if (curr == IPPROTO_HOPOPTS || /* ä¸ç¶ç¹ (Hop-by-Hop) ãªãã·ã§ã³ */
|
---|
542 | curr == IPPROTO_DSTOPTS || /* IPv6 çµç¹ãªãã·ã§ã³ */
|
---|
543 | curr == IPPROTO_ROUTING) /* çµè·¯å¶å¾¡ */
|
---|
544 | hsize = (((T_IP6_EXT_HDR *)hdr)->len + 1) * 8;
|
---|
545 | else
|
---|
546 | break;
|
---|
547 | size += hsize;
|
---|
548 | hdr += hsize;
|
---|
549 | curr = next;
|
---|
550 | }
|
---|
551 | return size;
|
---|
552 | }
|
---|
553 |
|
---|
554 | /*
|
---|
555 | * in6_plen2pmask -- ãã¬ãã£ãã¯ã¹é·ãããã¹ã¯ãçæããã
|
---|
556 | */
|
---|
557 |
|
---|
558 | void
|
---|
559 | in6_plen2pmask (T_IN6_ADDR *mask, uint_t prefix_len)
|
---|
560 | {
|
---|
561 | uint8_t *ptr, bit;
|
---|
562 |
|
---|
563 | memset(mask->s6_addr + prefix_len / 8, 0, (128 - prefix_len + 7) / 8);
|
---|
564 | for (ptr = mask->s6_addr; prefix_len > 0; ptr ++) {
|
---|
565 | for (bit = 0x80; bit && (prefix_len > 0); prefix_len --) {
|
---|
566 | *ptr |= bit;
|
---|
567 | bit >>= 1;
|
---|
568 | }
|
---|
569 | }
|
---|
570 | }
|
---|
571 |
|
---|
572 | /*
|
---|
573 | * in6_rtalloc -- ã«ã¼ãã£ã³ã°è¡¨ãæ¢ç´¢ããã
|
---|
574 | */
|
---|
575 |
|
---|
576 | const T_IN6_ADDR *
|
---|
577 | in6_rtalloc (T_IFNET *ifp, const T_IN6_ADDR *dst)
|
---|
578 | {
|
---|
579 | if (IN6_IS_ADDR_LINKLOCAL(dst) || IN6_IS_ADDR_MULTICAST(dst))
|
---|
580 | return dst;
|
---|
581 | else {
|
---|
582 | T_IN6_IFADDR *ia;
|
---|
583 | SYSTIM now;
|
---|
584 | int_t ix;
|
---|
585 |
|
---|
586 | /*
|
---|
587 | * ãµã¤ããã¼ã«ã«ã¢ãã¬ã¹ãéç´å¯è½ï¼ã°ãã¼ãã«ï¼ã¢ãã¬ã¹ã®å ´åã¯ã
|
---|
588 | * åä¸ãªã³ã¯å
|
---|
589 | ã®ãã¼ãã§ãããããã§ãã¯ããã
|
---|
590 | */
|
---|
591 |
|
---|
592 | syscall(get_tim(&now));
|
---|
593 | now /= SYSTIM_HZ;
|
---|
594 |
|
---|
595 | /* æ¨å¥¨æå¹æéå
|
---|
596 | ã®ã¢ãã¬ã¹ãæ¢ç´¢ããã*/
|
---|
597 | for (ix = NUM_IN6_IFADDR_ENTRY; ix -- > 0; ) {
|
---|
598 | ia = &ifp->in6_ifaddrs[ix];
|
---|
599 | if (IFA6_IS_READY(ia) &&
|
---|
600 | in6_are_prefix_equal(dst, &ia->addr, ia->prefix_len) &&
|
---|
601 | (int32_t)(ia->lifetime.preferred - now) > 0) {
|
---|
602 | /* ia->lifetime.preferred > now */
|
---|
603 | return dst;
|
---|
604 | }
|
---|
605 | }
|
---|
606 |
|
---|
607 | /* æå¹æéå
|
---|
608 | ã®ã¢ãã¬ã¹ãæ¢ç´¢ããã*/
|
---|
609 | for (ix = NUM_IN6_IFADDR_ENTRY; ix -- > 0; ) {
|
---|
610 | ia = &ifp->in6_ifaddrs[ix];
|
---|
611 | if (IFA6_IS_READY(ia) &&
|
---|
612 | in6_are_prefix_equal(dst, &ia->addr, ia->prefix_len) &&
|
---|
613 | (int32_t)(ia->lifetime.expire - now) > 0)
|
---|
614 | /* ia->lifetime.expire > now */
|
---|
615 | return dst;
|
---|
616 | }
|
---|
617 |
|
---|
618 | /*
|
---|
619 | * ãã¬ãã£ãã¯ã¹ãæ¢ç´¢ããã
|
---|
620 | */
|
---|
621 | if (nd6_onlink_prefix_lookup (dst) != NULL)
|
---|
622 | return dst;
|
---|
623 |
|
---|
624 | /*
|
---|
625 | * éççµè·¯è¡¨ãæ¢ç´¢ããã
|
---|
626 | */
|
---|
627 |
|
---|
628 | #if NUM_IN6_ROUTE_ENTRY > 0
|
---|
629 |
|
---|
630 | syscall(wai_sem(SEM_IN6_ROUTING_TBL));
|
---|
631 | for (ix = NUM_IN6_ROUTE_ENTRY; ix --; ) {
|
---|
632 | if ((routing6_tbl[ix].flags & IN_RTF_DEFINED) &&
|
---|
633 | in6_are_prefix_equal(dst, &routing6_tbl[ix].target,
|
---|
634 | routing6_tbl[ix].prefix_len)) {
|
---|
635 |
|
---|
636 | /*
|
---|
637 | * åãç´ãã«ããã¨ã³ããªã¯ãæå¹æéãåããæå»ã延é·ããã
|
---|
638 | * expire ã®åä½ã¯ [s]ã
|
---|
639 | * TMO_IN_REDIRECT ã®åä½ã¯ [ms]ã
|
---|
640 | */
|
---|
641 | if (ix > NUM_IN6_STATIC_ROUTE_ENTRY) {
|
---|
642 | SYSTIM now;
|
---|
643 |
|
---|
644 | syscall(get_tim(&now));
|
---|
645 | routing6_tbl[ix].expire = now / SYSTIM_HZ + TMO_IN_REDIRECT / 1000;
|
---|
646 | }
|
---|
647 |
|
---|
648 | syscall(sig_sem(SEM_IN6_ROUTING_TBL));
|
---|
649 | return &routing6_tbl[ix].gateway;
|
---|
650 | }
|
---|
651 | }
|
---|
652 | syscall(sig_sem(SEM_IN6_ROUTING_TBL));
|
---|
653 |
|
---|
654 | #endif /* of #if NUM_IN6_ROUTE_ENTRY > 0 */
|
---|
655 |
|
---|
656 | /*
|
---|
657 | * ãã£ãã©ã«ãã«ã¼ã¿ã»ãªã¹ããæ¢ç´¢ããã
|
---|
658 | */
|
---|
659 | return nd6_router_lookup();
|
---|
660 | }
|
---|
661 | }
|
---|
662 |
|
---|
663 | #if NUM_IN6_REDIRECT_ROUTE_ENTRY > 0
|
---|
664 |
|
---|
665 | /*
|
---|
666 | * in6_gateway_lookup -- ã«ã¼ãã£ã³ã°è¡¨ã®ã«ã¼ã¿ãæ¢ç´¢ããã
|
---|
667 | */
|
---|
668 |
|
---|
669 | T_IN6_RTENTRY *
|
---|
670 | in6_gateway_lookup (const T_IN6_ADDR *gw)
|
---|
671 | {
|
---|
672 | int_t ix;
|
---|
673 |
|
---|
674 | for (ix = NUM_IN6_ROUTE_ENTRY; ix --; )
|
---|
675 | if ((routing6_tbl[ix].flags & IN_RTF_DEFINED) &&
|
---|
676 | IN6_ARE_ADDR_EQUAL(&routing6_tbl[ix].gateway, gw))
|
---|
677 | return &routing6_tbl[ix];
|
---|
678 | return NULL;
|
---|
679 | }
|
---|
680 |
|
---|
681 | /*
|
---|
682 | * in6_rtredirect -- ã«ã¼ãã£ã³ã°è¡¨ã«ã¨ã³ããªãç»é²ããã
|
---|
683 | *
|
---|
684 | * 注æ: å¼æ° tmo ã®åä½ã¯ [us]ã
|
---|
685 | */
|
---|
686 |
|
---|
687 | void
|
---|
688 | in6_rtredirect (const T_IN6_ADDR *gateway, const T_IN6_ADDR *target, uint_t prefix_len, uint8_t flags, uint32_t tmo)
|
---|
689 | {
|
---|
690 | T_IN6_RTENTRY *frt;
|
---|
691 |
|
---|
692 | frt = in6_rtnewentry(flags, tmo);
|
---|
693 | memcpy(&frt->gateway, gateway, sizeof(T_IN6_ADDR));
|
---|
694 | memcpy(&frt->target, target, sizeof(T_IN6_ADDR));
|
---|
695 | frt->prefix_len = prefix_len;
|
---|
696 | }
|
---|
697 |
|
---|
698 | #endif /* of #if NUM_IN6_REDIRECT_ROUTE_ENTRY > 0 */
|
---|
699 |
|
---|
700 | #if NUM_IN6_HOSTCACHE_ENTRY > 0
|
---|
701 |
|
---|
702 | /*
|
---|
703 | * in6_hostcache_lookup -- IPv6 ãã¹ããã£ãã·ã¥ãæ¢ç´¢ããã
|
---|
704 | */
|
---|
705 |
|
---|
706 | static T_IN6_HOSTCACHE_ENTRY*
|
---|
707 | in6_hostcache_lookup (const T_IN6_ADDR *dst)
|
---|
708 | {
|
---|
709 | int_t ix;
|
---|
710 |
|
---|
711 | for (ix = NUM_IN6_HOSTCACHE_ENTRY; ix -- > 0; ) {
|
---|
712 | if (IN6_ARE_ADDR_EQUAL(dst, &in6_hostcache[ix].dst))
|
---|
713 | return &in6_hostcache[ix];
|
---|
714 | }
|
---|
715 | return NULL;
|
---|
716 | }
|
---|
717 |
|
---|
718 | /*
|
---|
719 | * in6_hostcache_update -- IPv6 ãã¹ããã£ãã·ã¥ãæ´æ°ããã
|
---|
720 | */
|
---|
721 |
|
---|
722 | void
|
---|
723 | in6_hostcache_update (T_IN6_ADDR *dst, uint32_t mtu)
|
---|
724 | {
|
---|
725 | T_IN6_HOSTCACHE_ENTRY *hc;
|
---|
726 | SYSTIM now, old;
|
---|
727 | int_t ix, oix;
|
---|
728 |
|
---|
729 | syscall(get_tim(&now));
|
---|
730 |
|
---|
731 | /* æ¢ã«ç»é²ããã¦ãããæ¢ç´¢ããã*/
|
---|
732 | if ((hc = in6_hostcache_lookup (dst)) == NULL) {
|
---|
733 |
|
---|
734 | /* 空ãã®ãã¹ããã£ãã·ã¥ãæ¢ãã*/
|
---|
735 | for (ix = NUM_IN6_HOSTCACHE_ENTRY; ix -- > 0; ) {
|
---|
736 | if (IN6_IS_HOSTCACHE_FREE(&in6_hostcache[ix]))
|
---|
737 | break;
|
---|
738 | }
|
---|
739 |
|
---|
740 | if (ix < 0) {
|
---|
741 | /*
|
---|
742 | * 空ããç¡ãæã¯ãæå¹æéã®åããæéãã
|
---|
743 | * æãçããã¹ããã£ãã·ã¥ãç½®æããã
|
---|
744 | */
|
---|
745 | old = now - 1;
|
---|
746 | oix = 0;
|
---|
747 | for (ix = NUM_IN6_HOSTCACHE_ENTRY; ix -- > 0; ) {
|
---|
748 | hc = &in6_hostcache[ix];
|
---|
749 | if (IN6_IS_HOSTCACHE_BUSY(hc) && (int32_t)(hc->expire - old) < 0) {
|
---|
750 | /* hc->expire < old */
|
---|
751 | oix = ix;
|
---|
752 | old = hc->expire;
|
---|
753 | }
|
---|
754 | }
|
---|
755 | ix = oix;
|
---|
756 | }
|
---|
757 | hc = &in6_hostcache[ix];
|
---|
758 | }
|
---|
759 | else if (mtu > hc->mtu &&
|
---|
760 | (int32_t)(hc->expire - now) >= (IN6_HOSTCACHE_EXPIRE - IN6_HOSTCACHE_INCREASE)) {
|
---|
761 |
|
---|
762 | /*
|
---|
763 | * æ¢ã«ç»é²ããã¦ãã¦ãæ°ãã MTU ããç»é²ããã¦ãã MTU ãã大ããã¨ãã
|
---|
764 | * IN6_HOSTCACHE_INCREASEï¼æ¨å¥¨ 10 åï¼éã¯æ´æ°ããªãã
|
---|
765 | */
|
---|
766 | return;
|
---|
767 | }
|
---|
768 | memcpy(&hc->dst, dst, sizeof(T_IN6_ADDR));
|
---|
769 | hc->expire = now + IN6_HOSTCACHE_EXPIRE;
|
---|
770 | hc->mtu = mtu;
|
---|
771 | }
|
---|
772 |
|
---|
773 | /*
|
---|
774 | * in6_hostcache_getmtu -- IPv6 ãã¹ããã£ãã·ã¥ããã MTU ãåå¾ããã
|
---|
775 | *
|
---|
776 | * æ»ãå¤ã 0 ã§ããã°ããã¹ããã£ãã·ã¥ã«ç»é²ããã¦ããªãã
|
---|
777 | */
|
---|
778 |
|
---|
779 | uint32_t
|
---|
780 | in6_hostcache_getmtu (const T_IN6_ADDR *dst)
|
---|
781 | {
|
---|
782 | T_IN6_HOSTCACHE_ENTRY *hc;
|
---|
783 |
|
---|
784 | /* æ¢ã«ç»é²ããã¦ãããæ¢ç´¢ããã*/
|
---|
785 | if ((hc = in6_hostcache_lookup(dst)) == NULL)
|
---|
786 | return 0;
|
---|
787 | else
|
---|
788 | return hc->mtu;
|
---|
789 | }
|
---|
790 |
|
---|
791 | /*
|
---|
792 | * in6_hostcache_timer -- IPv6 ãã¹ããã£ãã·ã¥æ´æ°ã¿ã¤ãã¼
|
---|
793 | *
|
---|
794 | * 1ç§å¨æã§èµ·åãããã
|
---|
795 | */
|
---|
796 |
|
---|
797 | static void
|
---|
798 | in6_hostcache_timer (void)
|
---|
799 | {
|
---|
800 | static int_t interval = IN6_HOSTCACHE_PRUNE / SYSTIM_HZ;
|
---|
801 |
|
---|
802 | SYSTIM now;
|
---|
803 |
|
---|
804 | interval --;
|
---|
805 | if (interval <= 0) {
|
---|
806 | syscall(get_tim(&now));
|
---|
807 | interval = IN6_HOSTCACHE_PRUNE / SYSTIM_HZ;
|
---|
808 | }
|
---|
809 | }
|
---|
810 |
|
---|
811 | #endif /* of #if NUM_IN6_HOSTCACHE_ENTRY > 0 */
|
---|
812 |
|
---|
813 | /*
|
---|
814 | * in6_timer -- IPv6 å
|
---|
815 | ±éã¿ã¤ãã¼
|
---|
816 | *
|
---|
817 | * 1ç§å¨æã§èµ·åãããã
|
---|
818 | */
|
---|
819 |
|
---|
820 | static void
|
---|
821 | in6_timer (void)
|
---|
822 | {
|
---|
823 | #if NUM_IN6_REDIRECT_ROUTE_ENTRY > 0
|
---|
824 |
|
---|
825 | in6_rttimer();
|
---|
826 |
|
---|
827 | #endif /* of #if NUM_IN6_REDIRECT_ROUTE_ENTRY > 0 */
|
---|
828 |
|
---|
829 | #ifdef IP6_CFG_FRAGMENT
|
---|
830 |
|
---|
831 | frag6_timer();
|
---|
832 |
|
---|
833 | #endif /* of #ifdef IP6_CFG_FRAGMENT */
|
---|
834 |
|
---|
835 | #if NUM_IN6_HOSTCACHE_ENTRY > 0
|
---|
836 |
|
---|
837 | in6_hostcache_timer();
|
---|
838 |
|
---|
839 | #endif /* of #if NUM_IN6_HOSTCACHE_ENTRY > 0 */
|
---|
840 |
|
---|
841 | timeout((callout_func)in6_timer, NULL, IN_TIMER_TMO);
|
---|
842 | }
|
---|
843 |
|
---|
844 | /*
|
---|
845 | * in6_init -- IPv6 å
|
---|
846 | ±éæ©è½ãåæåããã
|
---|
847 | */
|
---|
848 |
|
---|
849 | void
|
---|
850 | in6_init (void)
|
---|
851 | {
|
---|
852 | #if NUM_IN6_REDIRECT_ROUTE_ENTRY > 0
|
---|
853 |
|
---|
854 | in6_rtinit();
|
---|
855 |
|
---|
856 | #endif /* of #if NUM_IN6_REDIRECT_ROUTE_ENTRY > 0 */
|
---|
857 |
|
---|
858 | timeout((callout_func)nd6_timer, NULL, ND6_TIMER_TMO);
|
---|
859 | timeout((callout_func)in6_timer, NULL, IN_TIMER_TMO);
|
---|
860 | }
|
---|
861 |
|
---|
862 | /*
|
---|
863 | * in6_is_dstaddr_accept -- å®å
|
---|
864 | ã¢ãã¬ã¹ã¨ãã¦æ£ããããã§ãã¯ããã
|
---|
865 | */
|
---|
866 |
|
---|
867 | bool_t
|
---|
868 | in6_is_dstaddr_accept (const T_IN6_ADDR *myaddr, const T_IN6_ADDR *dstaddr)
|
---|
869 | {
|
---|
870 | if (IN6_IS_ADDR_UNSPECIFIED(myaddr))
|
---|
871 | return in6_lookup_ifaddr(IF_GET_IFNET(), dstaddr) != NULL;
|
---|
872 | else
|
---|
873 | return IN6_ARE_ADDR_EQUAL(dstaddr, myaddr);
|
---|
874 | }
|
---|
875 |
|
---|
876 | #if defined(DHCP6_CLI_CFG)
|
---|
877 |
|
---|
878 | /*
|
---|
879 | * in6_add_ifaddr -- ã¤ã³ã¿ãã§ã¼ã¹ã« IPv6 ã¢ãã¬ã¹ãè¨å®ããã
|
---|
880 | *
|
---|
881 | * vltime 㨠pltime ã®åä½ã¯[s]
|
---|
882 | */
|
---|
883 |
|
---|
884 | static ER
|
---|
885 | in6_add_ifaddr (T_IN6_ADDR *addr, uint_t prefix_len,
|
---|
886 | uint32_t vltime, uint32_t pltime)
|
---|
887 | {
|
---|
888 | T_IFNET *ifp = IF_GET_IFNET();
|
---|
889 | T_IN6_IFADDR *ia = NULL;
|
---|
890 | int_t ix;
|
---|
891 |
|
---|
892 | /* 空ãã®ã¨ã³ããªã¼ãæ¢ãã*/
|
---|
893 | ix = 0;
|
---|
894 | while (true) {
|
---|
895 | ia = in6ifa_ifpwithix(ifp, ix ++);
|
---|
896 |
|
---|
897 | /* 空ããç¡ããã°ã¨ã©ã¼ */
|
---|
898 | if (ia == NULL)
|
---|
899 | return E_OBJ;
|
---|
900 |
|
---|
901 | if ((ia->flags & IN6_IFF_DEFINED) == 0)
|
---|
902 | break;
|
---|
903 | }
|
---|
904 |
|
---|
905 | /* ç»é²ããã*/
|
---|
906 | return in6_update_ifa(ifp, ia, addr, prefix_len, vltime, pltime,
|
---|
907 | IN6_RTR_IX_UNREACH, ND6_PREFIX_IX_INVALID, 0);
|
---|
908 | }
|
---|
909 |
|
---|
910 | /*
|
---|
911 | * in6_upd_ifaddr -- ã¤ã³ã¿ãã§ã¼ã¹ã«è¨å®ããã¦ãã IPv6 ã¢ãã¬ã¹ãæ´æ°ããã
|
---|
912 | *
|
---|
913 | * ç»é²ããã¦ããªããã°ã追å ããã
|
---|
914 | * vltime 㨠pltime ã®åä½ã¯[s]
|
---|
915 | */
|
---|
916 |
|
---|
917 | ER
|
---|
918 | in6_upd_ifaddr (T_IN6_ADDR *addr, uint_t prefix_len,
|
---|
919 | uint32_t vltime, uint32_t pltime)
|
---|
920 | {
|
---|
921 | T_IFNET *ifp = IF_GET_IFNET();
|
---|
922 | T_IN6_IFADDR *ia;
|
---|
923 | int_t ix;
|
---|
924 |
|
---|
925 | /*
|
---|
926 | * ã¢ãã¬ã¹ãä¸è´ããã¨ã³ããªã¼ãæ¢ãã
|
---|
927 | * ç¡ããã°ç»é²ããã
|
---|
928 | */
|
---|
929 | if ((ix = in6_addr2ifaix(addr)) == IPV6_IFADDR_IX_INVALID)
|
---|
930 | return in6_add_ifaddr(addr, prefix_len, vltime, pltime);
|
---|
931 |
|
---|
932 | /*
|
---|
933 | * ã¤ã³ããã¯ã¹çªå·ãããã¨ã³ããªã¼ã«å¤æããã
|
---|
934 | * ã¨ã©ã¼ã«ãªããªãã¯ãã§ãããã確èªããã
|
---|
935 | */
|
---|
936 | if ((ia = in6ifa_ifpwithix (ifp, ix)) == NULL)
|
---|
937 | return E_OBJ;
|
---|
938 |
|
---|
939 | /* æ´æ°ããã*/
|
---|
940 | return in6_update_ifa(ifp, ia, addr, prefix_len, vltime, pltime,
|
---|
941 | IN6_RTR_IX_UNREACH, ND6_PREFIX_IX_INVALID, 0);
|
---|
942 | }
|
---|
943 |
|
---|
944 | /*
|
---|
945 | * in6_del_ifaddr -- ã¤ã³ã¿ãã§ã¼ã¹ã«è¨å®ããã¦ãã IPv6 ã¢ãã¬ã¹ãåé¤ããã
|
---|
946 | */
|
---|
947 |
|
---|
948 | ER
|
---|
949 | in6_del_ifaddr (T_IN6_ADDR *addr)
|
---|
950 | {
|
---|
951 | T_IFNET *ifp = IF_GET_IFNET();
|
---|
952 | int_t ix;
|
---|
953 |
|
---|
954 | /* ã¢ãã¬ã¹ãä¸è´ããã¨ã³ããªã¼ãæ¢ãã*/
|
---|
955 | if ((ix = in6_addr2ifaix(addr)) != IPV6_IFADDR_IX_INVALID) {
|
---|
956 |
|
---|
957 | /* ã¨ã³ããªã¼ãç¡å¹ã«ããã*/
|
---|
958 | ifp->in6_ifaddrs[ix].flags &= ~IN6_IFF_DEFINED;
|
---|
959 | return E_OK;
|
---|
960 | }
|
---|
961 | return E_PAR;
|
---|
962 | }
|
---|
963 |
|
---|
964 | #endif /* of #if defined(DHCP6_CLI_CFG) */
|
---|
965 |
|
---|
966 | #endif /* of #ifdef _IP6_CFG */
|
---|