[270] | 1 | /*
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| 2 | * TINET (TCP/IP Protocol Stack)
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| 3 | *
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| 4 | * Copyright (C) 2001-2009 by Dep. of Computer Science and Engineering
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| 5 | * Tomakomai National College of Technology, JAPAN
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| 6 | *
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| 7 | * ä¸è¨èä½æ¨©è
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| 8 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 9 | * ã«ãã£ã¦å
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| 10 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 11 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 12 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 13 | å¸ï¼ä»¥ä¸ï¼
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| 14 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 19 | * ç¨ã§ããå½¢ã§åé
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| 20 | å¸ããå ´åã«ã¯ï¼åé
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| 21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 22 | * è
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| 23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 26 | * ç¨ã§ããªãå½¢ã§åé
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| 27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®æ¡ä»¶ãæºãããã¨ï¼
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| 28 | * (a) åé
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| 29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 32 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 33 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 34 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 35 | 責ãããã¨ï¼
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| 36 | *
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| 37 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 38 | ã
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| 39 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 40 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 41 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 42 | *
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| 43 | * @(#) $Id: tcp_subr_ncs.c 270 2017-02-09 04:03:47Z coas-nagasima $
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| 44 | */
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| 45 |
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| 46 | /*
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| 47 | * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
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| 48 | * The Regents of the University of California. All rights reserved.
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| 49 | *
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| 50 | * Redistribution and use in source and binary forms, with or without
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| 51 | * modification, are permitted provided that the following conditions
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| 52 | * are met:
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| 53 | * 1. Redistributions of source code must retain the above copyright
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| 54 | * notice, this list of conditions and the following disclaimer.
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| 55 | * 2. Redistributions in binary form must reproduce the above copyright
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| 56 | * notice, this list of conditions and the following disclaimer in the
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| 57 | * documentation and/or other materials provided with the distribution.
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| 58 | * 3. All advertising materials mentioning features or use of this software
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| 59 | * must display the following acknowledgement:
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| 60 | * This product includes software developed by the University of
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| 61 | * California, Berkeley and its contributors.
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| 62 | * 4. Neither the name of the University nor the names of its contributors
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| 63 | * may be used to endorse or promote products derived from this software
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| 64 | * without specific prior written permission.
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| 65 | *
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| 66 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 67 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 68 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 69 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 70 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 71 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 72 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 73 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 74 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 75 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 76 | * SUCH DAMAGE.
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| 77 | *
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| 78 | * @(#)tcp_subr.c 8.2 (Berkeley) 5/24/95
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| 79 | * $FreeBSD: src/sys/netinet/tcp_subr.c,v 1.49.2.4 1999/08/29 16:29:55 peter Exp $
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| 80 | */
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| 81 |
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| 82 | #include <string.h>
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| 83 |
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| 84 | #ifdef TARGET_KERNEL_ASP
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| 85 |
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| 86 | #include <kernel.h>
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| 87 | #include <sil.h>
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| 88 | #include <t_syslog.h>
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| 89 | #include "kernel_cfg.h"
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| 90 |
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| 91 | #endif /* of #ifdef TARGET_KERNEL_ASP */
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| 92 |
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| 93 | #ifdef TARGET_KERNEL_JSP
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| 94 |
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| 95 | #include <s_services.h>
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| 96 | #include <t_services.h>
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| 97 | #include "kernel_id.h"
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| 98 |
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| 99 | #endif /* of #ifdef TARGET_KERNEL_JSP */
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| 100 |
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| 101 | #include <tinet_defs.h>
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| 102 | #include <tinet_config.h>
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| 103 |
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| 104 | #include <net/if.h>
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| 105 | #include <net/if_ppp.h>
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| 106 | #include <net/if_loop.h>
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| 107 | #include <net/ethernet.h>
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| 108 | #include <net/if_arp.h>
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| 109 | #include <net/ppp_ipcp.h>
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| 110 | #include <net/net.h>
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| 111 | #include <net/net_var.h>
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| 112 | #include <net/net_buf.h>
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| 113 | #include <net/net_timer.h>
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| 114 | #include <net/net_count.h>
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| 115 |
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| 116 | #include <netinet/in.h>
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| 117 | #include <netinet6/in6.h>
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| 118 | #include <netinet6/in6_var.h>
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| 119 | #include <netinet/in_var.h>
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| 120 | #include <netinet/ip.h>
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| 121 | #include <netinet/ip_var.h>
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| 122 | #include <netinet/ip6.h>
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| 123 | #include <netinet6/ip6_var.h>
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| 124 | #include <netinet6/nd6.h>
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| 125 | #include <netinet/tcp.h>
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| 126 | #include <netinet/tcp_timer.h>
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| 127 | #include <netinet/tcp_var.h>
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| 128 | #include <netinet/tcp_fsm.h>
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| 129 | #include <netinet/tcp_seq.h>
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| 130 | #include <netinet/in_itron.h>
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| 131 |
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| 132 | #ifdef SUPPORT_TCP
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| 133 |
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| 134 | #ifndef TCP_CFG_SWBUF_CSAVE_ONLY
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| 135 |
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| 136 | /*
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| 137 | * TCP é信端ç¹ã®éä¿¡ã¦ã£ã³ããããã¡ã®çã³ãã¼æ©è½ãç¡å¹
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| 138 | */
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| 139 |
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| 140 | /*
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| 141 | * tcp_read_swbuf -- éä¿¡ã¦ã£ã³ããããã¡ãããã¼ã¿ãèªã¿åºãã
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| 142 | */
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| 143 |
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| 144 | void
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| 145 | tcp_read_swbuf_ncs (T_TCP_CEP *cep, T_NET_BUF *output, uint_t len, uint_t doff)
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| 146 | {
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| 147 | uint8_t *wptr, *rptr;
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| 148 |
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| 149 | /* SDU ã®å¤§ããããã§ãã¯ããã*/
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| 150 | if (GET_IP_SDU_SIZE(GET_IP_HDR(output)) < GET_TCP_HDR_SIZE2(output, IF_IP_TCP_HDR_OFFSET) + len) {
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| 151 | syslog(LOG_INFO, "[TCP] shrink SUD len: %d -> %d",
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| 152 | (uint16_t)len, (uint16_t)(GET_IP_SDU_SIZE(GET_IP_HDR(output)) - GET_TCP_HDR_SIZE2(output, IF_IP_TCP_HDR_OFFSET)));
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| 153 | len = GET_IP_SDU_SIZE(GET_IP_HDR(output)) - GET_TCP_HDR_SIZE2(output, IF_IP_TCP_HDR_OFFSET);
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| 154 | }
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| 155 |
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| 156 | wptr = GET_TCP_SDU(output, IF_IP_TCP_HDR_OFFSET);
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| 157 |
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| 158 | /* é信端ç¹ãããã¯ããã*/
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| 159 | syscall(wai_sem(cep->semid_lock));
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| 160 |
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| 161 | rptr = cep->sbuf_rptr + doff;
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| 162 | if (rptr - (uint8_t*)cep->sbuf > cep->sbufsz) {
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| 163 |
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| 164 | /* 転ééå§ãéä¿¡ã¦ã£ã³ããããã¡ã®çµãããè¶
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| 165 | ããã¨ãã®å¦çã*/
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| 166 | rptr = (uint8_t*)cep->sbuf_rptr - (cep->sbufsz - doff);
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| 167 | }
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| 168 | else if (len + (rptr - (uint8_t*)cep->sbuf) > cep->sbufsz) {
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| 169 | uint_t sub;
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| 170 |
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| 171 | /* 転éç¯å²ãã©ã¦ã³ãããã¨ãã®å¦ç */
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| 172 | sub = (uint_t)(cep->sbufsz - (rptr - (uint8_t*)cep->sbuf));
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| 173 | memcpy((void*)wptr, rptr, (size_t)sub);
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| 174 | len -= sub;
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| 175 | wptr += sub;
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| 176 | rptr = (uint8_t*)cep->sbuf;
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| 177 | }
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| 178 | memcpy((void*)wptr, rptr, (size_t)len);
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| 179 |
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| 180 | NET_COUNT_TCP(net_count_tcp[NC_TCP_SEND_DATA_SEGS], 1);
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| 181 | NET_COUNT_TCP(net_count_tcp[NC_TCP_SEND_DATA_OCTETS], len);
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| 182 |
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| 183 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
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| 184 | syscall(sig_sem(cep->semid_lock));
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| 185 | }
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| 186 |
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| 187 | /*
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| 188 | * tcp_drop_swbuf -- éä¿¡ã¦ã£ã³ããããã¡ããæå®ããããªã¯ãããååé¤ããã
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| 189 | */
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| 190 |
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| 191 | void
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| 192 | tcp_drop_swbuf_ncs (T_TCP_CEP *cep, uint_t len)
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| 193 | {
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| 194 | uint_t last;
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| 195 |
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| 196 | /* é信端ç¹ãããã¯ããã*/
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| 197 | syscall(wai_sem(cep->semid_lock));
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| 198 |
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| 199 | last = cep->swbuf_count;
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| 200 |
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| 201 | if (cep->sbuf_rptr + len > (uint8_t*)cep->sbuf + cep->sbufsz)
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| 202 | /* ã©ã¦ã³ãããã¨ãã®è¨ç® */
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| 203 | cep->sbuf_rptr -= cep->sbufsz - len;
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| 204 | else
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| 205 | cep->sbuf_rptr += len;
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| 206 | cep->swbuf_count -= (uint16_t)len;
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| 207 |
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| 208 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
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| 209 | syscall(sig_sem(cep->semid_lock));
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| 210 |
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| 211 | #ifdef TCP_CFG_NON_BLOCKING
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| 212 |
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| 213 | if (cep->snd_nblk_tfn == TFN_TCP_GET_BUF) { /* ãã³ããããã³ã°ã³ã¼ã« */
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| 214 |
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| 215 | /* é信端ç¹ãããã¯ããã*/
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| 216 | syscall(wai_sem(cep->semid_lock));
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| 217 |
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| 218 | /* éä¿¡ãã¼ã¿é·ãè¨ç®ããã*/
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| 219 | if (cep->sbufsz - cep->swbuf_count > cep->sbufsz - (cep->sbuf_wptr - (uint8_t*)cep->sbuf))
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| 220 | /* æ¸è¾¼ã¿ãã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã¯ãæ¸è¾¼ã¿ãã¤ã³ã¿ããéä¿¡ã¦ã£ã³ããããã¡ã®çµããã¾ã§ */
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| 221 | len = (uint_t)(cep->sbufsz - (cep->sbuf_wptr - (uint8_t*)cep->sbuf));
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| 222 | else
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| 223 | len = cep->sbufsz - cep->swbuf_count;
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| 224 |
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| 225 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
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| 226 | syscall(sig_sem(cep->semid_lock));
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| 227 |
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| 228 | if (len > 0) {
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| 229 |
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| 230 | /* tcp_get_buf ã®å²å½ã¦é·ãè¨å®ããã*/
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| 231 | cep->get_buf_len = len;
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| 232 |
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| 233 | /* éä¿¡ã¦ã£ã³ããããã¡ã®ã¢ãã¬ã¹ãè¿ãã*/
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| 234 | *cep->snd_p_buf = cep->sbuf_wptr;
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| 235 |
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| 236 | if (IS_PTR_DEFINED(cep->callback))
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| 237 | #ifdef TCP_CFG_NON_BLOCKING_COMPAT14
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| 238 |
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| 239 | (*cep->callback)(GET_TCP_CEPID(cep), cep->snd_nblk_tfn, (void*)(uint32_t)len);
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| 240 |
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| 241 | #else /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
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| 242 |
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| 243 | (*cep->callback)(GET_TCP_CEPID(cep), cep->snd_nblk_tfn, (void*)&len);
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| 244 |
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| 245 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
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| 246 |
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| 247 | else
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| 248 | syslog(LOG_WARNING, "[TCP] no call back, CEP: %d.", GET_TCP_CEPID(cep));
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| 249 |
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| 250 | /* è¨æ¶ããã¦ããã¿ã¹ã¯ ID 㨠API æ©è½ã³ã¼ããã¯ãªã¢ã¼ããã*/
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| 251 | cep->snd_tskid = TA_NULL;
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| 252 | cep->snd_tfn = cep->snd_nblk_tfn = TFN_TCP_UNDEF;
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| 253 | }
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| 254 | }
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| 255 |
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| 256 | #ifdef TCP_CFG_EXTENTIONS
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| 257 |
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| 258 | else if (cep->snd_nblk_tfn == TFN_TCP_SND_DAT ||
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| 259 | cep->snd_nblk_tfn == TFN_TCP_SND_OOB) { /* ãã³ããããã³ã°ã³ã¼ã« */
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| 260 |
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| 261 | #else /* of #ifdef TCP_CFG_EXTENTIONS */
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| 262 |
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| 263 | else if (cep->snd_nblk_tfn == TFN_TCP_SND_DAT) { /* ãã³ããããã³ã°ã³ã¼ã« */
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| 264 |
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| 265 | #endif /* of #ifdef TCP_CFG_EXTENTIONS */
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| 266 |
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| 267 | ER_UINT error;
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| 268 |
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| 269 | /* éä¿¡ã¦ã£ã³ããããã¡ã«ãã¼ã¿ãæ¸ãè¾¼ãã*/
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| 270 | error = TCP_WRITE_SWBUF(cep, cep->snd_data, (uint_t)cep->snd_len);
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| 271 |
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| 272 | #ifdef TCP_CFG_EXTENTIONS
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| 273 |
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| 274 | /* éä¿¡ç·æ¥ãã¤ã³ã¿ãè¨å®ããã*/
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| 275 | if (cep->snd_nblk_tfn == TFN_TCP_SND_OOB)
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| 276 | cep->snd_up = cep->snd_una + error;
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| 277 |
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| 278 | #endif /* of #ifdef TCP_CFG_EXTENTIONS */
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| 279 |
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| 280 | if (IS_PTR_DEFINED(cep->callback))
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| 281 |
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| 282 | #ifdef TCP_CFG_NON_BLOCKING_COMPAT14
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| 283 |
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| 284 | (*cep->callback)(GET_TCP_CEPID(cep), cep->snd_nblk_tfn, (void*)error);
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| 285 |
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| 286 | #else /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
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| 287 |
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| 288 | (*cep->callback)(GET_TCP_CEPID(cep), cep->snd_nblk_tfn, (void*)&error);
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| 289 |
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| 290 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
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| 291 |
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| 292 | else
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| 293 | syslog(LOG_WARNING, "[TCP] no call back, CEP: %d.", GET_TCP_CEPID(cep));
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| 294 |
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| 295 | /* è¨æ¶ããã¦ããã¿ã¹ã¯ ID 㨠API æ©è½ã³ã¼ããã¯ãªã¢ã¼ããã*/
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| 296 | cep->snd_tskid = TA_NULL;
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| 297 | cep->snd_tfn = cep->snd_nblk_tfn = TFN_TCP_UNDEF;
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| 298 | }
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| 299 | else {
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| 300 |
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| 301 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING */
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| 302 |
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| 303 | /* éä¿¡ã¦ã£ã³ããããã¡ã«ç©ºããåºæ¥ããåºåã¿ã¹ã¯ãèµ·åºããã*/
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| 304 | if (last == cep->sbufsz && cep->swbuf_count < cep->sbufsz)
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| 305 | syscall(set_flg(cep->snd_flgid, TCP_CEP_EVT_SWBUF_READY));
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| 306 |
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| 307 | #ifdef TCP_CFG_NON_BLOCKING
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| 308 |
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| 309 | }
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| 310 |
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| 311 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING */
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| 312 |
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| 313 | if (cep->swbuf_count > 0) {
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| 314 | /* éä¿¡ã¦ã£ã³ããããã¡ã«ãã¼ã¿ãããã°åºåããã¹ãããã*/
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| 315 | cep->flags |= TCP_CEP_FLG_POST_OUTPUT;
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| 316 | sig_sem(SEM_TCP_POST_OUTPUT);
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| 317 | }
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| 318 | }
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| 319 |
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| 320 | /*
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| 321 | * tcp_write_swbuf -- éä¿¡ã¦ã£ã³ããããã¡ã«ãã¼ã¿ãæ¸ãè¾¼ãã
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| 322 | */
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| 323 |
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| 324 | ER_UINT
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| 325 | tcp_write_swbuf_ncs (T_TCP_CEP *cep, void *data, uint_t len)
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| 326 | {
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| 327 | uint_t offset;
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| 328 |
|
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| 329 | /* é信端ç¹ãããã¯ããã*/
|
---|
| 330 | syscall(wai_sem(cep->semid_lock));
|
---|
| 331 |
|
---|
| 332 | /* len ã¨éä¿¡ã¦ã£ã³ããããã¡ã®ç©ºãã®å°ããæ¹ã移ããã¼ã¿æ°ã«ããã*/
|
---|
| 333 | if (len > (cep->sbufsz - cep->swbuf_count))
|
---|
| 334 | len = cep->sbufsz - cep->swbuf_count;
|
---|
| 335 |
|
---|
| 336 | /* æ¸ãè¾¼ã¿ãã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã®å¦ç */
|
---|
| 337 | if (len > cep->sbufsz - (cep->sbuf_wptr - (uint8_t*)cep->sbuf)) {
|
---|
| 338 | offset = (uint_t)(cep->sbufsz - (cep->sbuf_wptr -(uint8_t*)cep->sbuf));
|
---|
| 339 | memcpy(cep->sbuf_wptr, data, (size_t)offset);
|
---|
| 340 | cep->sbuf_wptr = (uint8_t*)cep->sbuf;
|
---|
| 341 | cep->swbuf_count += offset;
|
---|
| 342 | }
|
---|
| 343 | else
|
---|
| 344 | offset = 0;
|
---|
| 345 |
|
---|
| 346 | memcpy(cep->sbuf_wptr, (void*)((uint8_t*)data + offset), (size_t)(len - offset));
|
---|
| 347 | cep->sbuf_wptr += len - offset;
|
---|
| 348 | cep->swbuf_count += len - offset;
|
---|
| 349 |
|
---|
| 350 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
|
---|
| 351 | syscall(sig_sem(cep->semid_lock));
|
---|
| 352 |
|
---|
| 353 | return (ER_UINT)len;
|
---|
| 354 | }
|
---|
| 355 |
|
---|
| 356 | /*
|
---|
| 357 | * tcp_wait_swbuf -- éä¿¡ã¦ã£ã³ããããã¡ã空ãã®ãå¾
|
---|
| 358 | ã¤ã
|
---|
| 359 | */
|
---|
| 360 |
|
---|
| 361 | ER
|
---|
| 362 | tcp_wait_swbuf_ncs (T_TCP_CEP *cep, TMO tmout)
|
---|
| 363 | {
|
---|
| 364 | ER error;
|
---|
| 365 | FLGPTN flag;
|
---|
| 366 |
|
---|
| 367 | while (cep->swbuf_count >= cep->sbufsz) {
|
---|
| 368 | /*
|
---|
| 369 | * éä¿¡ã¦ã£ã³ããããã¡ã®ç©ºãããªããã°ãåºåããã¹ããã¦ã
|
---|
| 370 | * éä¿¡ã¦ã£ã³ããããã¡ã空ãã¾ã§å¾
|
---|
| 371 | ã¤ã
|
---|
| 372 | */
|
---|
| 373 | cep->flags |= TCP_CEP_FLG_POST_OUTPUT;
|
---|
| 374 | sig_sem(SEM_TCP_POST_OUTPUT);
|
---|
| 375 |
|
---|
| 376 | if ((error = twai_flg(cep->snd_flgid, TCP_CEP_EVT_SWBUF_READY, TWF_ORW, &flag, tmout)) != E_OK) {
|
---|
| 377 | return error;
|
---|
| 378 | }
|
---|
| 379 | syscall(clr_flg(cep->snd_flgid, (FLGPTN)(~TCP_CEP_EVT_SWBUF_READY)));
|
---|
| 380 |
|
---|
| 381 | /*
|
---|
| 382 | * éä¿¡ã§ããããCEP ã® FSM ç¶æ
|
---|
| 383 | ãè¦ãã
|
---|
| 384 | * éä¿¡ã¦ã£ã³ããããã¡ã空ãã¾ã§å¾
|
---|
| 385 | ã¤éã«ãéä¿¡ä¸è½ã«ãªã£ãå ´åã¯ã
|
---|
| 386 | * ã³ãã¯ã·ã§ã³ãåæããããã¨ãæå³ãã¦ããã
|
---|
| 387 | */
|
---|
| 388 | if (!TCP_FSM_CAN_SEND_MORE(cep->fsm_state)) {
|
---|
| 389 | return E_CLS;
|
---|
| 390 | }
|
---|
| 391 | }
|
---|
| 392 |
|
---|
| 393 | return E_OK;
|
---|
| 394 | }
|
---|
| 395 | /*
|
---|
| 396 | * tcp_get_swbuf_addr -- éä¿¡ã¦ã£ã³ããããã¡ã®ç©ºãã¢ãã¬ã¹ãç²å¾ããã
|
---|
| 397 | */
|
---|
| 398 |
|
---|
| 399 | ER_UINT
|
---|
| 400 | tcp_get_swbuf_addr_ncs (T_TCP_CEP *cep, void **p_buf)
|
---|
| 401 | {
|
---|
| 402 | uint_t len;
|
---|
| 403 |
|
---|
| 404 | /* é信端ç¹ãããã¯ããã*/
|
---|
| 405 | syscall(wai_sem(cep->semid_lock));
|
---|
| 406 |
|
---|
| 407 | /* éä¿¡ã¦ã£ã³ããããã¡ã®ç©ºãã¢ãã¬ã¹ã®å
|
---|
| 408 | é ãè¨å®ããã*/
|
---|
| 409 | *p_buf = cep->sbuf_wptr;
|
---|
| 410 |
|
---|
| 411 | /* éä¿¡ã¦ã£ã³ããããã¡ã®ç©ºããµã¤ãºãè¨ç®ããã*/
|
---|
| 412 | if (cep->sbufsz - cep->swbuf_count > cep->sbufsz - (cep->sbuf_wptr - (uint8_t*)cep->sbuf))
|
---|
| 413 | /* æ¸è¾¼ã¿ãã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã¯ãæ¸è¾¼ã¿ãã¤ã³ã¿ããéä¿¡ã¦ã£ã³ããããã¡ã®çµããã¾ã§ */
|
---|
| 414 | len = (uint_t)(cep->sbufsz - (cep->sbuf_wptr - (uint8_t*)cep->sbuf));
|
---|
| 415 | else
|
---|
| 416 | len = cep->sbufsz - cep->swbuf_count;
|
---|
| 417 |
|
---|
| 418 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
|
---|
| 419 | syscall(sig_sem(cep->semid_lock));
|
---|
| 420 |
|
---|
| 421 | /* éä¿¡ã¦ã£ã³ããããã¡ã®ç©ºããã¼ã¿é·ãè¨å®ãããã®å¤ãè¿ãã*/
|
---|
| 422 | cep->get_buf_len = len;
|
---|
| 423 | return (ER_UINT)len;
|
---|
| 424 | }
|
---|
| 425 |
|
---|
| 426 | /*
|
---|
| 427 | * tcp_send_swbuf -- éä¿¡ã¦ã£ã³ããããã¡ã®ãã¼ã¿ãéä¿¡å¯è½ã«ããã
|
---|
| 428 | */
|
---|
| 429 |
|
---|
| 430 | void
|
---|
| 431 | tcp_send_swbuf_ncs (T_TCP_CEP *cep, uint_t len)
|
---|
| 432 | {
|
---|
| 433 | /* é信端ç¹ãããã¯ããã*/
|
---|
| 434 | syscall(wai_sem(cep->semid_lock));
|
---|
| 435 |
|
---|
| 436 | cep->sbuf_wptr += len;
|
---|
| 437 | cep->swbuf_count += len;
|
---|
| 438 |
|
---|
| 439 | /* æ¸è¾¼ã¿ãã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã®å¦ç */
|
---|
| 440 | if (cep->sbuf_wptr >= (uint8_t*)cep->sbuf + cep->sbufsz)
|
---|
| 441 | cep->sbuf_wptr = (uint8_t*)cep->sbuf;
|
---|
| 442 |
|
---|
| 443 | /* tcp_get_buf ã®å²å½ã¦é·ããªã»ããããã*/
|
---|
| 444 | cep->get_buf_len = 0;
|
---|
| 445 |
|
---|
| 446 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
|
---|
| 447 | syscall(sig_sem(cep->semid_lock));
|
---|
| 448 |
|
---|
| 449 | /* éä¿¡ã¦ã£ã³ããããã¡ããã«ã®ã¨ãã¯å¼·å¶çã«éä¿¡ããã*/
|
---|
| 450 | if (cep->swbuf_count >= cep->sbufsz)
|
---|
| 451 | cep->flags |= TCP_CEP_FLG_FORCE | TCP_CEP_FLG_FORCE_CLEAR;
|
---|
| 452 | }
|
---|
| 453 |
|
---|
| 454 | /*
|
---|
| 455 | * tcp_is_swbuf_full -- éä¿¡ã¦ã£ã³ããããã¡ãæºæ¯ããã§ãã¯ããã
|
---|
| 456 | */
|
---|
| 457 |
|
---|
| 458 | bool_t
|
---|
| 459 | tcp_is_swbuf_full_ncs (T_TCP_CEP *cep)
|
---|
| 460 | {
|
---|
| 461 | return cep->swbuf_count >= cep->sbufsz;
|
---|
| 462 | }
|
---|
| 463 |
|
---|
| 464 | #endif /* of #ifndef TCP_CFG_SWBUF_CSAVE_ONLY */
|
---|
| 465 |
|
---|
| 466 | #ifndef TCP_CFG_RWBUF_CSAVE_ONLY
|
---|
| 467 |
|
---|
| 468 | /*
|
---|
| 469 | * TCP é信端ç¹ã®åä¿¡ã¦ã£ã³ããããã¡ã®çã³ãã¼æ©è½ãç¡å¹
|
---|
| 470 | */
|
---|
| 471 |
|
---|
| 472 | /*
|
---|
| 473 | * tcp_drop_rwbuf -- åä¿¡ã¦ã£ã³ããããã¡ããæå®ããããªã¯ãããååé¤ããã
|
---|
| 474 | */
|
---|
| 475 |
|
---|
| 476 | void
|
---|
| 477 | tcp_drop_rwbuf_ncs (T_TCP_CEP *cep, uint_t len)
|
---|
| 478 | {
|
---|
| 479 | cep->rwbuf_count -= len;
|
---|
| 480 | cep->rbuf_rptr += len;
|
---|
| 481 |
|
---|
| 482 | /* èªã¿åºããã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã®å¦ç */
|
---|
| 483 | if (cep->rbuf_rptr >= (uint8_t*)cep->rbuf + cep->rbufsz)
|
---|
| 484 | cep->rbuf_rptr = (uint8_t*)cep->rbuf;
|
---|
| 485 | }
|
---|
| 486 |
|
---|
| 487 | /*
|
---|
| 488 | * tcp_read_rwbuf -- åä¿¡ã¦ã£ã³ããããã¡ããæå®ããããªã¯ãããåèªã¿åºãã
|
---|
| 489 | */
|
---|
| 490 |
|
---|
| 491 | uint_t
|
---|
| 492 | tcp_read_rwbuf_ncs (T_TCP_CEP *cep, void *data, uint_t len)
|
---|
| 493 | {
|
---|
| 494 | uint_t offset;
|
---|
| 495 |
|
---|
| 496 | /* é信端ç¹ãããã¯ããã*/
|
---|
| 497 | syscall(wai_sem(cep->semid_lock));
|
---|
| 498 |
|
---|
| 499 | /* len ã¨åä¿¡ã¦ã£ã³ããããã¡ã®ãã¼ã¿æ°ã®å°ããæ¹ãåãåºããã¼ã¿æ°ã«ããã*/
|
---|
| 500 | if (len > cep->rwbuf_count)
|
---|
| 501 | len = cep->rwbuf_count;
|
---|
| 502 |
|
---|
| 503 | /* èªã¿åºããã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã®å¦ç */
|
---|
| 504 | if (len > cep->rbufsz - (cep->rbuf_rptr - (uint8_t*)cep->rbuf)) {
|
---|
| 505 | offset = (uint_t)(cep->rbufsz - (cep->rbuf_rptr -(uint8_t*)cep->rbuf));
|
---|
| 506 | memcpy(data, cep->rbuf_rptr, (size_t)offset);
|
---|
| 507 | cep->rwbuf_count -= offset;
|
---|
| 508 | cep->rbuf_rptr = (uint8_t*)cep->rbuf;
|
---|
| 509 | }
|
---|
| 510 | else
|
---|
| 511 | offset = 0;
|
---|
| 512 |
|
---|
| 513 | memcpy((void*)((uint8_t*)data + offset), cep->rbuf_rptr, (size_t)(len - offset));
|
---|
| 514 | cep->rwbuf_count -= len - offset;
|
---|
| 515 | cep->rbuf_rptr += len - offset;
|
---|
| 516 |
|
---|
| 517 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
|
---|
| 518 | syscall(sig_sem(cep->semid_lock));
|
---|
| 519 |
|
---|
| 520 | return len;
|
---|
| 521 | }
|
---|
| 522 |
|
---|
| 523 | /*
|
---|
| 524 | * tcp_get_rwbuf_addr -- åä¿¡ã¦ã£ã³ããããã¡ã®ç©ºãã¢ãã¬ã¹ãç²å¾ããã
|
---|
| 525 | */
|
---|
| 526 |
|
---|
| 527 | uint_t
|
---|
| 528 | tcp_get_rwbuf_addr_ncs (T_TCP_CEP *cep, void **p_buf)
|
---|
| 529 | {
|
---|
| 530 | uint_t len;
|
---|
| 531 |
|
---|
| 532 | /* é信端ç¹ãããã¯ããã*/
|
---|
| 533 | syscall(wai_sem(cep->semid_lock));
|
---|
| 534 |
|
---|
| 535 | /* åä¿¡ã¦ã£ã³ããããã¡ã®ãã¼ã¿é·ãè¨ç®ããã*/
|
---|
| 536 | if (cep->rwbuf_count > cep->rbufsz - (cep->rbuf_rptr - (uint8_t*)cep->rbuf))
|
---|
| 537 | /* ãã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã¯åä¿¡ã¦ã£ã³ããããã¡ã®çµããã¾ã§ */
|
---|
| 538 | len = (uint_t)(cep->rbufsz - (cep->rbuf_rptr - (uint8_t*)cep->rbuf));
|
---|
| 539 | else
|
---|
| 540 | len = cep->rwbuf_count;
|
---|
| 541 |
|
---|
| 542 | /* åä¿¡ã¦ã£ã³ããããã¡ã®ãã¼ã¿ã®ã¢ãã¬ã¹ã®å
|
---|
| 543 | é ãè¨å®ããã*/
|
---|
| 544 | *p_buf = cep->rbuf_rptr;
|
---|
| 545 |
|
---|
| 546 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
|
---|
| 547 | syscall(sig_sem(cep->semid_lock));
|
---|
| 548 |
|
---|
| 549 | /* åä¿¡ã¦ã£ã³ããããã¡ã®ãã¼ã¿é·ãè¨å®ãããã®å¤ãè¿ãã*/
|
---|
| 550 | cep->rcv_buf_len = len;
|
---|
| 551 | return len;
|
---|
| 552 | }
|
---|
| 553 |
|
---|
| 554 | /*
|
---|
| 555 | * tcp_write_rwbuf -- åä¿¡ã¦ã£ã³ããããã¡ã«ãã¼ã¿ãæ¸ãè¾¼ãã
|
---|
| 556 | *
|
---|
| 557 | * 注æ:
|
---|
| 558 | * å
|
---|
| 559 | ¥å input ã¯ãT_TCP_Q_HDR ã«ãããªã³ã¯ããã
|
---|
| 560 | * 並ã¹æ¿ããçµäºãã¦ããªããã°ãªããªããã¾ãã
|
---|
| 561 | * 追å ãããã¼ã¿ã¯ãåä¿¡ã¦ã£ã³ããããã¡ã«åã¾ããã¨ã
|
---|
| 562 | */
|
---|
| 563 |
|
---|
| 564 | void
|
---|
| 565 | tcp_write_rwbuf_ncs (T_TCP_CEP *cep, T_NET_BUF *input, uint_t thoff)
|
---|
| 566 | {
|
---|
| 567 | T_TCP_Q_HDR *qhdr;
|
---|
| 568 | uint_t offset, inlen, last;
|
---|
| 569 |
|
---|
| 570 | /* é信端ç¹ãããã¯ããã*/
|
---|
| 571 | syscall(wai_sem(cep->semid_lock));
|
---|
| 572 |
|
---|
| 573 | qhdr = (T_TCP_Q_HDR*)GET_TCP_HDR(input, thoff);
|
---|
| 574 |
|
---|
| 575 | /* åä¿¡æ¸ã¿ã·ã¼ã±ã³ã¹çªå·ãæ´æ°ããã*/
|
---|
| 576 | cep->rcv_nxt += qhdr->slen;
|
---|
| 577 |
|
---|
| 578 | last = cep->rwbuf_count;
|
---|
| 579 | inlen = qhdr->slen;
|
---|
| 580 |
|
---|
| 581 | /* ç·æ¥ãã¼ã¿ã® SDU è£æ£ãè¡ãã*/
|
---|
| 582 | if (qhdr->urp > 0 && inlen > 0) {
|
---|
| 583 | inlen -= qhdr->urp;
|
---|
| 584 | qhdr->slen -= qhdr->urp;
|
---|
| 585 | qhdr->urp = 0;
|
---|
| 586 | }
|
---|
| 587 |
|
---|
| 588 | /*
|
---|
| 589 | * FIN ãã©ã°ãä»ããã»ã°ã¡ã³ã㯠inlen == 0 ã«ãªããã¨ãããã
|
---|
| 590 | * ããã¯ãã¢ããªã±ã¼ã·ã§ã³ã«ãç¸æãããã以ä¸ãã¼ã¿ãéããã¦
|
---|
| 591 | * ããªããã¨ãç¥ãããããã§ããã
|
---|
| 592 | */
|
---|
| 593 | if (inlen > 0) {
|
---|
| 594 |
|
---|
| 595 | /* æ¸ãè¾¼ã¿ãã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã®å¦ç */
|
---|
| 596 | if (inlen > cep->rbufsz - (cep->rbuf_wptr - (uint8_t*)cep->rbuf)) {
|
---|
| 597 | offset = (uint_t)(cep->rbufsz - (cep->rbuf_wptr - (uint8_t*)cep->rbuf));
|
---|
| 598 | memcpy(cep->rbuf_wptr, (void*)(GET_TCP_SDU(input, thoff) + qhdr->soff), (size_t)offset);
|
---|
| 599 | cep->rbuf_wptr = (uint8_t*)cep->rbuf;
|
---|
| 600 | cep->rwbuf_count += offset;
|
---|
| 601 | inlen -= offset;
|
---|
| 602 | }
|
---|
| 603 | else
|
---|
| 604 | offset = 0;
|
---|
| 605 |
|
---|
| 606 | memcpy(cep->rbuf_wptr, (void*)(GET_TCP_SDU(input, thoff) + qhdr->soff + offset), (size_t)inlen);
|
---|
| 607 | cep->rbuf_wptr += inlen;
|
---|
| 608 | cep->rwbuf_count += inlen;
|
---|
| 609 |
|
---|
| 610 | NET_COUNT_TCP(net_count_tcp[NC_TCP_RECV_DATA_SEGS], 1);
|
---|
| 611 | NET_COUNT_TCP(net_count_tcp[NC_TCP_RECV_DATA_OCTETS], inlen);
|
---|
| 612 | }
|
---|
| 613 |
|
---|
| 614 | syscall(rel_net_buf(input));
|
---|
| 615 |
|
---|
| 616 | #ifdef TCP_CFG_NON_BLOCKING
|
---|
| 617 |
|
---|
| 618 | if (cep->rcv_nblk_tfn == TFN_TCP_RCV_BUF) { /* ãã³ããããã³ã°ã³ã¼ã« */
|
---|
| 619 |
|
---|
| 620 | int_t len;
|
---|
| 621 |
|
---|
| 622 | /* åä¿¡ã¦ã£ã³ããããã¡ã®ç©ºããã¼ã¿é·ãè¨ç®ããã*/
|
---|
| 623 | if (cep->rwbuf_count > cep->rbufsz - (cep->rbuf_rptr - (uint8_t*)cep->rbuf)) {
|
---|
| 624 | /* ãã¤ã³ã¿ãã©ã¦ã³ãããã¨ãã¯åä¿¡ã¦ã£ã³ããããã¡ã®çµããã¾ã§ */
|
---|
| 625 | len = (uint_t)(cep->rbufsz - (cep->rbuf_rptr - (uint8_t*)cep->rbuf));
|
---|
| 626 | }
|
---|
| 627 | else
|
---|
| 628 | len = cep->rwbuf_count;
|
---|
| 629 |
|
---|
| 630 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
|
---|
| 631 | syscall(sig_sem(cep->semid_lock));
|
---|
| 632 |
|
---|
| 633 | /*
|
---|
| 634 | * FIN ãã©ã°ãä»ããã»ã°ã¡ã³ã㯠inlen == 0 ã«ãªããã¨ãããã
|
---|
| 635 | * ããã¯ãã¢ããªã±ã¼ã·ã§ã³ã«ãç¸æãããã以ä¸ãã¼ã¿ãéããã¦
|
---|
| 636 | * ããªããã¨ãç¥ãããããã§ããã
|
---|
| 637 | */
|
---|
| 638 | if (len > 0 || inlen == 0) {
|
---|
| 639 |
|
---|
| 640 | /* tcp_rcv_buf ã®å²å½ã¦é·ãè¨å®ããã*/
|
---|
| 641 | cep->rcv_buf_len = len;
|
---|
| 642 |
|
---|
| 643 | /* åä¿¡ã¦ã£ã³ããããã¡ã®ã¢ãã¬ã¹ãè¿ãã*/
|
---|
| 644 | *cep->rcv_p_buf = cep->rbuf_rptr;
|
---|
| 645 |
|
---|
| 646 |
|
---|
| 647 | if (IS_PTR_DEFINED(cep->callback))
|
---|
| 648 |
|
---|
| 649 | #ifdef TCP_CFG_NON_BLOCKING_COMPAT14
|
---|
| 650 |
|
---|
| 651 | (*cep->callback)(GET_TCP_CEPID(cep), cep->rcv_nblk_tfn, (void*)(uint32_t)len);
|
---|
| 652 |
|
---|
| 653 | #else /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
|
---|
| 654 |
|
---|
| 655 | (*cep->callback)(GET_TCP_CEPID(cep), cep->rcv_nblk_tfn, (void*)&len);
|
---|
| 656 |
|
---|
| 657 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
|
---|
| 658 |
|
---|
| 659 | else
|
---|
| 660 | syslog(LOG_WARNING, "[TCP] no call back, CEP: %d.", GET_TCP_CEPID(cep));
|
---|
| 661 |
|
---|
| 662 | if (len == 0) {
|
---|
| 663 |
|
---|
| 664 | /*
|
---|
| 665 | * é信端ç¹ãããã¯ãã¦ã
|
---|
| 666 | * åä¿¡ã¦ã£ã³ããããã¡ãã¥ã¼ã®ãããã¯ã¼ã¯ãããã¡ã解æ¾ããã
|
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| 667 | */
|
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| 668 | syscall(wai_sem(cep->semid_lock));
|
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| 669 | TCP_FREE_RWBUFQ(cep);
|
---|
| 670 | syscall(sig_sem(cep->semid_lock));
|
---|
| 671 | }
|
---|
| 672 | }
|
---|
| 673 |
|
---|
| 674 | /* è¨æ¶ããã¦ããã¿ã¹ã¯ ID 㨠API æ©è½ã³ã¼ããã¯ãªã¢ã¼ããã*/
|
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| 675 | cep->rcv_tskid = TA_NULL;
|
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| 676 | cep->rcv_tfn = cep->rcv_nblk_tfn = TFN_TCP_UNDEF;
|
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| 677 | }
|
---|
| 678 |
|
---|
| 679 | else if (cep->rcv_nblk_tfn == TFN_TCP_RCV_DAT) { /* ãã³ããããã³ã°ã³ã¼ã« */
|
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| 680 | ER_UINT len;
|
---|
| 681 |
|
---|
| 682 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
|
---|
| 683 | syscall(sig_sem(cep->semid_lock));
|
---|
| 684 |
|
---|
| 685 | /* åä¿¡ã¦ã£ã³ããããã¡ãããã¼ã¿ãåãåºãã*/
|
---|
| 686 | if ((len = TCP_READ_RWBUF(cep, cep->rcv_data, (uint_t)cep->rcv_len)) > 0) {
|
---|
| 687 | /* ç¸æã«ã¦ã£ã³ãã¦ãµã¤ãºãå¤ãã£ããã¨ãç¥ãããããåºåããã¹ãããã*/
|
---|
| 688 | cep->flags |= TCP_CEP_FLG_POST_OUTPUT;
|
---|
| 689 | sig_sem(SEM_TCP_POST_OUTPUT);
|
---|
| 690 | }
|
---|
| 691 |
|
---|
| 692 | /*
|
---|
| 693 | * FIN ãã©ã°ãä»ããã»ã°ã¡ã³ã㯠inlen == 0 ã«ãªããã¨ãããã
|
---|
| 694 | * ããã¯ãã¢ããªã±ã¼ã·ã§ã³ã«ãç¸æãããã以ä¸ãã¼ã¿ãéããã¦
|
---|
| 695 | * ããªããã¨ãç¥ãããããã§ããã
|
---|
| 696 | */
|
---|
| 697 | if (len > 0 || inlen == 0) {
|
---|
| 698 |
|
---|
| 699 | if (IS_PTR_DEFINED(cep->callback))
|
---|
| 700 |
|
---|
| 701 | #ifdef TCP_CFG_NON_BLOCKING_COMPAT14
|
---|
| 702 |
|
---|
| 703 | (*cep->callback)(GET_TCP_CEPID(cep), cep->rcv_nblk_tfn, (void*)(uint32_t)len);
|
---|
| 704 |
|
---|
| 705 | #else /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
|
---|
| 706 |
|
---|
| 707 | (*cep->callback)(GET_TCP_CEPID(cep), cep->rcv_nblk_tfn, (void*)&len);
|
---|
| 708 |
|
---|
| 709 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
|
---|
| 710 |
|
---|
| 711 | else
|
---|
| 712 | syslog(LOG_WARNING, "[TCP] no call back, CEP: %d.", GET_TCP_CEPID(cep));
|
---|
| 713 | }
|
---|
| 714 |
|
---|
| 715 | /* è¨æ¶ããã¦ããã¿ã¹ã¯ ID 㨠API æ©è½ã³ã¼ããã¯ãªã¢ã¼ããã*/
|
---|
| 716 | cep->rcv_tskid = TA_NULL;
|
---|
| 717 | cep->rcv_tfn = cep->rcv_nblk_tfn = TFN_TCP_UNDEF;
|
---|
| 718 |
|
---|
| 719 | }
|
---|
| 720 | else {
|
---|
| 721 |
|
---|
| 722 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING */
|
---|
| 723 |
|
---|
| 724 | /* é信端ç¹ã®ããã¯ã解é¤ããã*/
|
---|
| 725 | syscall(sig_sem(cep->semid_lock));
|
---|
| 726 |
|
---|
| 727 | if (inlen == 0 && cep->rwbuf_count == 0) {
|
---|
| 728 | /*
|
---|
| 729 | * åä¿¡ã¦ã£ã³ããããã¡å
|
---|
| 730 | ã®ãã¼ã¿æ°ã 0 ã§ã
|
---|
| 731 | * ç¸æãã FIN ãã©ã°ãä»ããã»ã°ã¡ã³ããåä¿¡ããã¨ãã¯ã
|
---|
| 732 | * é信端ç¹ãããã¯ãã¦ã
|
---|
| 733 | * åä¿¡ã¦ã£ã³ããããã¡ãã¥ã¼ã®ãããã¯ã¼ã¯ãããã¡ã解æ¾ããã
|
---|
| 734 | */
|
---|
| 735 | syscall(wai_sem(cep->semid_lock));
|
---|
| 736 | TCP_FREE_RWBUFQ(cep);
|
---|
| 737 | syscall(sig_sem(cep->semid_lock));
|
---|
| 738 | }
|
---|
| 739 |
|
---|
| 740 | /*
|
---|
| 741 | * åä¿¡ã¦ã£ã³ããããã¡ã«ãã¼ã¿ãå
|
---|
| 742 | ¥ããã inlen == 0 ã®æãå
|
---|
| 743 | ¥åã¿ã¹ã¯ãèµ·åºããã
|
---|
| 744 | * FIN ãã©ã°ãä»ããã»ã°ã¡ã³ã㯠inlen == 0 ã«ãªããã¨ãããã
|
---|
| 745 | * ããã¯ãã¢ããªã±ã¼ã·ã§ã³ã«ãç¸æãããã以ä¸ãã¼ã¿ãéããã¦
|
---|
| 746 | * ããªããã¨ãç¥ãããããã§ããã
|
---|
| 747 | */
|
---|
| 748 | if ((last == 0 && cep->rwbuf_count > 0) || inlen == 0)
|
---|
| 749 | syscall(set_flg(cep->rcv_flgid, TCP_CEP_EVT_RWBUF_READY));
|
---|
| 750 |
|
---|
| 751 | #ifdef TCP_CFG_NON_BLOCKING
|
---|
| 752 |
|
---|
| 753 | }
|
---|
| 754 |
|
---|
| 755 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING */
|
---|
| 756 |
|
---|
| 757 | }
|
---|
| 758 |
|
---|
| 759 | #endif /* of #ifndef TCP_CFG_RWBUF_CSAVE_ONLY */
|
---|
| 760 |
|
---|
| 761 | #endif /* of #ifdef SUPPORT_TCP */
|
---|