[317] | 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: ppp.c 317 2017-08-03 13:14:26Z coas-nagasima $
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| 44 | */
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| 45 |
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| 46 | /*
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| 47 | * Copyright (c) 1989 Carnegie Mellon University.
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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 are permitted
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| 51 | * provided that the above copyright notice and this paragraph are
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| 52 | * duplicated in all such forms and that any documentation,
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| 53 | * advertising materials, and other materials related to such
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| 54 | * distribution and use acknowledge that the software was developed
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| 55 | * by Carnegie Mellon University. The name of the
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| 56 | * University may not be used to endorse or promote products derived
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| 57 | * from this software without specific prior written permission.
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| 58 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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| 59 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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| 60 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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| 61 | */
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| 62 |
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| 63 | /*
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| 64 | * Written by Toshiharu OHNO (tony-o@iij.ad.jp)
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| 65 | *
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| 66 | * Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
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| 67 | *
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| 68 | * Redistribution and use in source and binary forms are permitted
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| 69 | * provided that the above copyright notice and this paragraph are
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| 70 | * duplicated in all such forms and that any documentation,
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| 71 | * advertising materials, and other materials related to such
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| 72 | * distribution and use acknowledge that the software was developed
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| 73 | * by the Internet Initiative Japan. The name of the
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| 74 | * IIJ may not be used to endorse or promote products derived
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| 75 | * from this software without specific prior written permission.
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| 76 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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| 77 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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| 78 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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| 79 | */
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| 80 |
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| 81 | /*
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| 82 | * PPP å¦çã¿ã¹ã¯ã®æ¬ä½
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| 83 | */
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| 84 |
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| 85 | #include <s_services.h>
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| 86 | #include <t_services.h>
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| 87 | #include "kernel_id.h"
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| 88 |
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| 89 | #include <tinet_defs.h>
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| 90 | #include <tinet_config.h>
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| 91 |
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| 92 | #include <net/if.h>
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| 93 | #include <net/if_ppp.h>
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| 94 | #include <net/net.h>
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| 95 | #include <net/net_endian.h>
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| 96 | #include <net/net_var.h>
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| 97 | #include <net/net_buf.h>
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| 98 | #include <net/net_timer.h>
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| 99 | #include <net/net_count.h>
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| 100 | #include <net/ppp.h>
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| 101 | #include <net/ppp_var.h>
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| 102 | #include <net/ppp_hdlc.h>
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| 103 | #include <net/ppp_fsm.h>
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| 104 | #include <net/ppp_lcp.h>
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| 105 | #include <net/ppp_ipv6cp.h>
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| 106 | #include <net/ppp_ipcp.h>
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| 107 | #include <net/ppp_ccp.h>
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| 108 | #include <net/ppp_upap.h>
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| 109 | #include <net/ppp_modem.h>
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| 110 |
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| 111 | #ifdef SUPPORT_PPP
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| 112 |
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| 113 | /*
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| 114 | * å
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| 115 | ¨åå¤æ°
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| 116 | */
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| 117 |
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| 118 | uint8_t ppp_phase = PPP_PHASE_INITIALIZE; /* ãªã³ã¯ã®ç¶æ
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| 119 | */
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| 120 |
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| 121 | /*
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| 122 | * ãããã³ã«è¡¨
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| 123 | */
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| 124 |
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| 125 | T_PPP_PROTENT *protocols[] = {
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| 126 | &lcp_protent,
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| 127 |
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| 128 | #ifdef _IP6_CFG
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| 129 | &ipv6cp_protent,
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| 130 | #endif /* of #ifdef _IP6_CFG */
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| 131 |
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| 132 | #ifdef _IP4_CFG
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| 133 | &ipcp_protent,
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| 134 | #endif /* of #ifdef _IP4_CFG */
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| 135 |
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| 136 | #ifdef SUPPORT_CCP
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| 137 | &ccp_protent,
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| 138 | #endif /* of #ifdef SUPPORT_CCP */
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| 139 |
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| 140 | #ifdef LCP_CFG_PAP
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| 141 | &pap_protent,
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| 142 | #endif /* of #ifdef LCP_CFG_PAP */
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| 143 |
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| 144 | #ifdef LCP_CFG_CHAP
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| 145 | &chap_protent,
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| 146 | #endif /* of #ifdef LCP_CFG_CHAP */
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| 147 |
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| 148 | NULL
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| 149 | };
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| 150 |
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| 151 | /*
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| 152 | * å¤æ°
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| 153 | */
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| 154 |
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| 155 | #ifdef PPP_IDLE_TIMEOUT
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| 156 |
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| 157 | static bool_t idle = false;
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| 158 |
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| 159 | #endif /* of #ifdef PPP_IDLE_TIMEOUT */
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| 160 |
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| 161 | /*
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| 162 | * é¢æ°
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| 163 | */
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| 164 |
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| 165 | static void parse_input (T_NET_BUF *input);
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| 166 |
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| 167 | #ifdef PPP_IDLE_TIMEOUT
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| 168 |
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| 169 | static void idle_timeout (void *arg);
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| 170 |
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| 171 | #endif /* of #ifdef PPP_IDLE_TIMEOUT */
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| 172 |
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| 173 | /*
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| 174 | * PPP å
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| 175 | ¥åã®è§£æ
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| 176 | */
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| 177 |
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| 178 | static void
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| 179 | parse_input(T_NET_BUF *input)
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| 180 | {
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| 181 | T_PPP_PROTENT *entry;
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| 182 | int_t ix;
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| 183 | uint16_t proto;
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| 184 |
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| 185 | NET_COUNT_PPP(net_count_ppp.in_octets, input->len);
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| 186 | NET_COUNT_PPP(net_count_ppp.in_packets, 1);
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| 187 |
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| 188 | /* ãã¬ã¼ã é·ããã§ãã¯ãã */
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| 189 | if (input->len < sizeof(T_PPP_HDR)) { /* FreeBSD ã§ã¯ PPP_HDRLEN 㯠4 */
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| 190 | syslog(LOG_NOTICE, "[PPP] recv short frame.");
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| 191 | goto buf_rel;
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| 192 | }
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| 193 |
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| 194 | proto = ntohs(*GET_PPP_HDR(input));
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| 195 |
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| 196 | /* ãããã³ã«ã LCP 以å¤ã§ãLCP ããªã¼ãã³ããã¦ããªããã°ã¨ã©ã¼ */
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| 197 | if (proto != PPP_LCP && lcp_fsm.state != PPP_FSM_OPENED) {
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| 198 | syslog(LOG_NOTICE, "[PPP] LCP not open.");
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| 199 | goto buf_rel;
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| 200 | }
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| 201 |
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| 202 | /* ãªã³ã¯ãèªè¨¼ç¶æ
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| 203 | 以åã¯ãLCPãLQRãPAPãCHAP ã®ã¿åãä»ãã */
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| 204 | if (ppp_phase <= PPP_PHASE_AUTHENTICATE &&
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| 205 | !(proto == PPP_LCP || proto == PPP_LQR ||
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| 206 | proto == PPP_PAP || proto == PPP_CHAP)) {
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| 207 | syslog(LOG_NOTICE, "[PPP] disc proto: 0x%04x, phase: %d.", proto, ppp_phase);
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| 208 | goto buf_rel;
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| 209 | }
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| 210 |
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| 211 | /* ä¸ä½ãããã³ã«ã®å
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| 212 | ¥åé¢æ°ãå¼åºã */
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| 213 | for (ix = 0; (entry = protocols[ix]) != NULL; ix ++) {
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| 214 | if (entry->proto == proto && entry->input != NULL) {
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| 215 | (*entry->input)(input);
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| 216 | syscall(rel_net_buf(input));
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| 217 | return;
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| 218 | }
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| 219 | if ((entry->proto & ~0x8000) == proto && entry->datainput != NULL) {
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| 220 | (*entry->datainput)(input);
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| 221 | return;
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| 222 | }
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| 223 | }
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| 224 |
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| 225 | syslog(LOG_INFO, "[PPP] unexp proto: 0x%04x.", proto);
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| 226 | lcp_sprotrej(input);
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| 227 |
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| 228 | buf_rel:
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| 229 | NET_COUNT_PPP(net_count_ppp.in_err_packets, 1);
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| 230 | syscall(rel_net_buf(input));
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| 231 | }
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| 232 |
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| 233 | /*
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| 234 | * ppp_output -- PPP ã¤ã³ã¿ãã§ã¼ã¹ã®åºåé¢æ°
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| 235 | */
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| 236 |
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| 237 | ER
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| 238 | ppp_output (T_NET_BUF *output, TMO tmout)
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| 239 | {
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| 240 | ER error = E_OK;
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| 241 |
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| 242 | #ifdef PPP_CFG_MODEM
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| 243 |
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| 244 | #if 0 /* ä¿ç */
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| 245 | /* ã¢ãã ã®æ¥ç¶å®äºã¾ã§å¾
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| 246 | ã¤ã*/
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| 247 | if ((error = wait_modem()) != E_OK)
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| 248 | goto buf_ret;
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| 249 | #endif
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| 250 |
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| 251 | #endif /* of #ifdef PPP_CFG_MODEM */
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| 252 |
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| 253 | #ifdef _IP6_CFG
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| 254 | /* IPV6CP ã®æ¥ç¶å®äºã¾ã§å¾
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| 255 | ã¤ã*/
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| 256 | if ((error = wait_ipv6cp()) != E_OK)
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| 257 | goto buf_ret;
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| 258 | #endif /* of #ifdef _IP6_CFG */
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| 259 |
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| 260 | #ifdef _IP4_CFG
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| 261 | /* IPCP ã®æ¥ç¶å®äºã¾ã§å¾
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| 262 | ã¤ã*/
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| 263 | if ((error = wait_ipcp()) != E_OK)
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| 264 | goto buf_ret;
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| 265 | #endif /* of #ifdef _IP4_CFG */
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| 266 |
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| 267 | #ifdef _IP4_CFG
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| 268 | /* IPCP ã®æ¥ç¶å®äºã¾ã§å¾
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| 269 | ã¤ã*/
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| 270 | if ((error = wait_ipcp()) != E_OK)
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| 271 | goto buf_ret;
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| 272 | #endif /* of #ifdef _IP4_CFG */
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| 273 |
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| 274 | #ifdef PPP_IDLE_TIMEOUT
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| 275 | wai_sem(SEM_IDLE_TIMEOUT);
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| 276 | if (idle) {
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| 277 | untimeout((FP)idle_timeout, NULL);
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| 278 | idle = false;
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| 279 | }
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| 280 | sig_sem(SEM_IDLE_TIMEOUT);
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| 281 | #endif /* of #ifdef PPP_IDLE_TIMEOUT */
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| 282 |
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| 283 | /* PPP åºåãã¥ã¼ã«æå
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| 284 | ¥ããã*/
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| 285 | if ((error = tsnd_dtq(DTQ_PPP_OUTPUT, output, tmout)) != E_OK)
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| 286 | goto buf_ret;
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| 287 |
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| 288 | #ifdef PPP_IDLE_TIMEOUT
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| 289 | wai_sem(SEM_IDLE_TIMEOUT);
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| 290 | if (!idle && ppp_phase == PPP_PHASE_NETWORK) {
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| 291 | timeout((FP)idle_timeout, NULL, PPP_IDLE_TIMEOUT);
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| 292 | idle = true;
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| 293 | }
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| 294 | sig_sem(SEM_IDLE_TIMEOUT);
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| 295 | #endif /* of #ifdef PPP_IDLE_TIMEOUT */
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| 296 |
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| 297 | return error;
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| 298 |
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| 299 | buf_ret:
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| 300 | syscall(rel_net_buf(output));
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| 301 | NET_COUNT_PPP(net_count_ppp.out_err_packets, 1);
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| 302 | return error;
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| 303 | }
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| 304 |
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| 305 | /*
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| 306 | * ppp_cp_output -- CP ãã¬ã¼ã ã®éä¿¡
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| 307 | */
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| 308 |
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| 309 | void
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| 310 | ppp_cp_output (uint8_t code, uint8_t id, T_NET_BUF *output)
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| 311 | {
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| 312 | T_PPP_CP_HDR *cph;
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| 313 |
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| 314 | /* CP ããããè¨å®ãã */
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| 315 | cph = GET_PPP_CP_HDR(output);
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| 316 | cph->code = code;
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| 317 | cph->id = id;
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| 318 | cph->len = htons(output->len - sizeof(T_PPP_HDR));
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| 319 |
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| 320 | /* PPP åºåãã¥ã¼ã«æå
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| 321 | ¥ããã*/
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| 322 | if (snd_dtq(DTQ_PPP_OUTPUT, output) != E_OK) {
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| 323 | syscall(rel_net_buf(output));
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| 324 | NET_COUNT_PPP(net_count_ppp.out_err_packets, 1);
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| 325 | }
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| 326 | }
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| 327 |
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| 328 | /*
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| 329 | * PPP å
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| 330 | ¥åã¿ã¹ã¯
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| 331 | */
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| 332 |
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| 333 | void
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| 334 | ppp_input_task(intptr_t exinf)
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| 335 | {
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| 336 | T_NET_BUF *input;
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| 337 | T_PPP_PROTENT *proto;
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| 338 | ID tskid;
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| 339 | int_t ix;
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| 340 | uint8_t rcount = 0;
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| 341 |
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| 342 | /* ãã¼ããåæè¨å®ãã */
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| 343 | syscall(serial_opn_por(HDLC_PORTID));
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| 344 | syscall(serial_ctl_por(HDLC_PORTID, IOCTL_FCSND | IOCTL_FCRCV));
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| 345 |
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| 346 | get_tid(&tskid);
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| 347 |
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| 348 | #ifdef PPP_CFG_MODEM
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| 349 |
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| 350 | init_modem();
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| 351 | syslog(LOG_NOTICE, "[PPP INPUT:%d] started with modem on port %d.", tskid, HDLC_PORTID);
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| 352 |
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| 353 | #else /* of #ifdef PPP_CFG_MODEM */
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| 354 |
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| 355 | syslog(LOG_NOTICE, "[PPP INPUT:%d] started on port %d.", tskid, HDLC_PORTID);
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| 356 |
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| 357 | #endif /* of #ifdef PPP_CFG_MODEM */
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| 358 |
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| 359 | /* ãããã¯ã¼ã¯ã¿ã¤ãã¿ã¹ã¯ãèµ·åãã */
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| 360 | syscall(act_tsk(NET_TIMER_TASK));
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| 361 |
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| 362 | /* ä¸ä½ãããã³ã«ãåæåãã */
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| 363 | for (ix = 0; (proto = protocols[ix]) != NULL; ix ++)
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| 364 | if (proto->init != NULL)
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| 365 | (*proto->init)();
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| 366 |
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| 367 | lcp_lowerup();
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| 368 | lcp_open(PPP_OPEN_PASSIVE);
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| 369 |
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| 370 | /* PPP åºåã¿ã¹ã¯ãèµ·åãã */
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| 371 | syscall(act_tsk(PPP_OUTPUT_TASK));
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| 372 |
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| 373 | /* ä¹±æ°çæãåæåããã*/
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| 374 | net_srand(0);
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| 375 |
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| 376 | while (true) {
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| 377 | if (tget_net_buf(&input, IF_PDU_SIZE, TMO_PPP_GET_NET_BUF) == E_OK) {
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| 378 | while (HDLC_read(input, IF_PDU_SIZE) != E_OK)
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| 379 | ;
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| 380 | if (input->len > 0) {
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| 381 |
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| 382 | /* ä¹±æ°çæãåæåããã*/
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| 383 | if (rcount == 0)
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| 384 | net_srand(input->len);
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| 385 | rcount ++;
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| 386 |
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| 387 | #ifdef PPP_IDLE_TIMEOUT
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| 388 | wai_sem(SEM_IDLE_TIMEOUT);
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| 389 | if (idle && ntohs(*GET_PPP_HDR(input)) != PPP_LCP) {
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| 390 | untimeout((FP)idle_timeout, NULL);
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| 391 | idle = false;
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| 392 | }
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| 393 | sig_sem(SEM_IDLE_TIMEOUT);
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| 394 | #endif /* of #ifdef PPP_IDLE_TIMEOUT */
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| 395 |
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| 396 | parse_input(input);
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| 397 | }
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| 398 | else
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| 399 | syscall(rel_net_buf(input));
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| 400 |
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| 401 | #ifdef PPP_IDLE_TIMEOUT
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| 402 | wai_sem(SEM_IDLE_TIMEOUT);
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| 403 | if (!idle && ppp_phase == PPP_PHASE_NETWORK) {
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| 404 | timeout((FP)idle_timeout, NULL, PPP_IDLE_TIMEOUT);
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| 405 | idle = true;
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| 406 | }
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| 407 | else if (idle && ppp_phase != PPP_PHASE_NETWORK) {
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| 408 | untimeout((FP)idle_timeout, NULL);
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| 409 | idle = false;
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| 410 | }
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| 411 | sig_sem(SEM_IDLE_TIMEOUT);
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| 412 | #endif /* of #ifdef PPP_IDLE_TIMEOUT */
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| 413 |
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| 414 | }
|
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| 415 | else {
|
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| 416 | HDLC_dummy_read();
|
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| 417 | NET_COUNT_PPP(net_count_ppp.in_err_packets, 1);
|
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| 418 | NET_COUNT_PPP(net_count_ppp_no_bufs, 1);
|
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| 419 | }
|
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| 420 | }
|
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| 421 | }
|
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| 422 |
|
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| 423 | /*
|
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| 424 | * PPP åºåã¿ã¹ã¯
|
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| 425 | */
|
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| 426 |
|
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| 427 | void
|
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| 428 | ppp_output_task(intptr_t exinf)
|
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| 429 | {
|
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| 430 | T_NET_BUF *output;
|
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| 431 | ID tskid;
|
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| 432 |
|
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| 433 | get_tid(&tskid);
|
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| 434 | syslog(LOG_NOTICE, "[PPP OUTPUT:%d] started.", tskid);
|
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| 435 |
|
---|
| 436 | while (true) {
|
---|
| 437 | while (rcv_dtq(DTQ_PPP_OUTPUT, (intptr_t*)&output) == E_OK) {
|
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| 438 | NET_COUNT_PPP(net_count_ppp.out_octets, output->len);
|
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| 439 | NET_COUNT_PPP(net_count_ppp.out_packets, 1);
|
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| 440 | syscall(HDLC_write(output));
|
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| 441 | syscall(rel_net_buf(output));
|
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| 442 | }
|
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| 443 | }
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 | #ifdef PPP_IDLE_TIMEOUT
|
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| 447 |
|
---|
| 448 | /*
|
---|
| 449 | * ã¢ã¤ãã«ã¿ã¤ã ã¢ã¦ãå¦ç
|
---|
| 450 | */
|
---|
| 451 |
|
---|
| 452 | static void
|
---|
| 453 | idle_timeout (void *arg)
|
---|
| 454 | {
|
---|
| 455 | syslog(LOG_NOTICE, "[PPP] idel %d [s], disconnecting.", (uint16_t)(PPP_IDLE_TIMEOUT / NET_TIMER_HZ));
|
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| 456 | lcp_close();
|
---|
| 457 | }
|
---|
| 458 |
|
---|
| 459 | #endif /* of #ifdef PPP_IDLE_TIMEOUT */
|
---|
| 460 |
|
---|
| 461 | #endif /* fo #ifdef SUPPORT_PPP */
|
---|