| 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: udp_output.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 |
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| 79 | #include <string.h>
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| 80 |
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| 81 | #ifdef TARGET_KERNEL_ASP
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| 82 |
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| 83 | #include <kernel.h>
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| 84 | #include <sil.h>
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| 85 | #include <t_syslog.h>
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| 86 | #include "kernel_cfg.h"
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| 87 |
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| 88 | #endif /* of #ifdef TARGET_KERNEL_ASP */
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| 89 |
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| 90 | #ifdef TARGET_KERNEL_JSP
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| 91 |
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| 92 | #include <s_services.h>
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| 93 | #include <t_services.h>
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| 94 | #include "kernel_id.h"
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| 95 |
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| 96 | #endif /* of #ifdef TARGET_KERNEL_JSP */
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| 97 |
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| 98 | #include <tinet_defs.h>
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| 99 | #include <tinet_config.h>
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| 100 |
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| 101 | #include <net/if.h>
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| 102 | #include <net/if_ppp.h>
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| 103 | #include <net/if_loop.h>
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| 104 | #include <net/ethernet.h>
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| 105 | #include <net/net.h>
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| 106 | #include <net/net_buf.h>
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| 107 | #include <net/net_count.h>
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| 108 |
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| 109 | #include <netinet/in.h>
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| 110 | #include <netinet6/in6.h>
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| 111 | #include <netinet/in_var.h>
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| 112 | #include <netinet/in_itron.h>
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| 113 | #include <netinet/ip.h>
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| 114 | #include <netinet/ip_var.h>
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| 115 | #include <netinet/ip_icmp.h>
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| 116 | #include <netinet6/in6_var.h>
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| 117 | #include <netinet/ip6.h>
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| 118 | #include <netinet6/ip6_var.h>
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| 119 | #include <netinet6/nd6.h>
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| 120 | #include <netinet/icmp6.h>
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| 121 | #include <netinet/udp.h>
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| 122 | #include <netinet/udp_var.h>
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| 123 |
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| 124 | #ifdef SUPPORT_UDP
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| 125 |
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| 126 | #ifdef UDP_CFG_NON_BLOCKING
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| 127 |
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| 128 | /*
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| 129 | * é¢æ°
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| 130 | */
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| 131 |
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| 132 | static void udp_output (T_UDP_CEP *cep);
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| 133 |
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| 134 | /*
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| 135 | * UDP åºåã¿ã¹ã¯
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| 136 | * ãã³ããããã³ã°ã³ã¼ã«ãçµã¿è¾¼ãã ã¨ã使ç¨ããã
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| 137 | */
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| 138 |
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| 139 | static void
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| 140 | udp_output (T_UDP_CEP *cep)
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| 141 | {
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| 142 | T_NET_BUF *output;
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| 143 | T_UDP_HDR *udph;
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| 144 | ER_UINT error;
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| 145 |
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| 146 | #ifdef UDP_CFG_OUT_CHECKSUM
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| 147 | uint16_t sum;
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| 148 | #endif /* of #ifdef UDP_CFG_OUT_CHECKSUM */
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| 149 |
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| 150 | /* IP ãã¼ã¿ã°ã©ã ãå²ãå½ã¦ãã*/
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| 151 | if ((error = IN_GET_DATAGRAM(&output, (uint_t)(UDP_HDR_SIZE + cep->snd_len), 0,
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| 152 | &cep->snd_p_dstaddr->ipaddr,
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| 153 | &cep->myaddr.ipaddr,
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| 154 | IPPROTO_UDP, IP_DEFTTL,
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| 155 | NBA_SEARCH_ASCENT, TMO_UDP_OUTPUT)) != E_OK) {
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| 156 | goto err_ret;
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| 157 | }
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| 158 |
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| 159 | /* UDP ãããã«æ
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| 160 | å ±ãè¨å®ããã*/
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| 161 | udph = GET_UDP_HDR(output, IF_IP_UDP_HDR_OFFSET);
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| 162 | udph->sport = htons(cep->myaddr.portno);
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| 163 | udph->dport = htons(cep->snd_p_dstaddr->portno);
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| 164 | udph->ulen = htons(UDP_HDR_SIZE + cep->snd_len);
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| 165 | udph->sum = 0;
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| 166 |
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| 167 | /* ãã¼ã¿ãã³ãã¼ããã*/
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| 168 | memcpy((void*)GET_UDP_SDU(output, IF_IP_UDP_HDR_OFFSET),
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| 169 | cep->snd_data, (size_t)cep->snd_len);
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| 170 |
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| 171 | #ifdef UDP_CFG_OUT_CHECKSUM
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| 172 |
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| 173 | sum = IN_CKSUM(output, IPPROTO_UDP, IF_IP_UDP_HDR_OFFSET,
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| 174 | (uint_t)(UDP_HDR_SIZE + cep->snd_len));
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| 175 |
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| 176 | /* è¨ç®ãããã§ãã¯ãµã ã®å¤ã 0 ãªã 0xffff ãå
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| 177 | ¥ããã*/
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| 178 | if (sum == 0)
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| 179 | sum = UINT_C(0xffff);
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| 180 | udph->sum = sum;
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| 181 |
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| 182 | #endif/* of #ifdef UDP_CFG_OUT_CHECKSUM */
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| 183 |
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| 184 | /* ãããã¯ã¼ã¯ãããã¡é·ã調æ´ããã*/
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| 185 | output->len = (uint16_t)(IF_IP_UDP_HDR_SIZE + cep->snd_len);
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| 186 |
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| 187 | /* ãããã¯ã¼ã¯å±¤ (IP) ã®åºåé¢æ°ãå¼ã³åºãã*/
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| 188 | if ((error = IP_OUTPUT(output, TMO_UDP_OUTPUT)) != E_OK)
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| 189 | goto err_ret;
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| 190 |
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| 191 |
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| 192 | NET_COUNT_MIB(udp_stats.udpOutDatagrams, 1);
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| 193 |
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| 194 | if (IS_PTR_DEFINED(cep->callback)) {
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| 195 |
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| 196 | if (error == E_OK)
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| 197 | error = cep->snd_len;
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| 198 |
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| 199 | #ifdef TCP_CFG_NON_BLOCKING_COMPAT14
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| 200 |
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| 201 | (*cep->callback)(GET_UDP_CEPID(cep), TFN_UDP_SND_DAT, (void*)error);
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| 202 |
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| 203 | #else /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
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| 204 |
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| 205 | (*cep->callback)(GET_UDP_CEPID(cep), TFN_UDP_SND_DAT, (void*)&error);
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| 206 |
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| 207 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
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| 208 |
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| 209 | }
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| 210 | else
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| 211 | syslog(LOG_WARNING, "[UDP] no call back, CEP: %d.", GET_UDP_CEPID(cep));
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| 212 | cep->snd_p_dstaddr = NULL;
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| 213 | return;
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| 214 |
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| 215 | err_ret:
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| 216 | NET_COUNT_UDP(net_count_udp.out_err_packets, 1);
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| 217 | if (IS_PTR_DEFINED(cep->callback)) {
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| 218 |
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| 219 | #ifdef TCP_CFG_NON_BLOCKING_COMPAT14
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| 220 |
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| 221 | (*cep->callback)(GET_UDP_CEPID(cep), TFN_UDP_SND_DAT, (void*)E_NOMEM);
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| 222 |
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| 223 | #else /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
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| 224 |
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| 225 | error = E_NOMEM;
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| 226 | (*cep->callback)(GET_UDP_CEPID(cep), TFN_UDP_SND_DAT, (void*)&error);
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| 227 |
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| 228 | #endif /* of #ifdef TCP_CFG_NON_BLOCKING_COMPAT14 */
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| 229 |
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| 230 | }
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| 231 | else
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| 232 | syslog(LOG_WARNING, "[UDP] no call back, CEP: %d.", GET_UDP_CEPID(cep));
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| 233 | cep->snd_p_dstaddr = NULL;
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| 234 | return;
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| 235 | }
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| 236 |
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| 237 | /*
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| 238 | * UDP åºåã¿ã¹ã¯
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| 239 | * ãã³ããããã³ã°ã³ã¼ã«ãçµã¿è¾¼ãã ã¨ã使ç¨ããã
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| 240 | */
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| 241 |
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| 242 | void
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| 243 | udp_output_task (intptr_t exinf)
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| 244 | {
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| 245 | ID tskid;
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| 246 | int_t ix;
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| 247 |
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| 248 | get_tid(&tskid);
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| 249 | syslog(LOG_NOTICE, "[UDP OUTPUT:%d] started.", tskid);
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| 250 |
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| 251 |
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| 252 | #if defined(SUPPORT_INET6) && !defined(SUPPORT_TCP)
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| 253 |
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| 254 | /* IPv6 ã®ã¹ãã¼ãã¬ã¹ã»ã¢ãã¬ã¹èªåè¨å®ãå®è¡ããã*/
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| 255 | in6_if_up(IF_GET_IFNET());
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| 256 |
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| 257 | #endif /* of #if defined(SUPPORT_INET6) && !defined(SUPPORT_TCP) */
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| 258 |
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| 259 | while (true) {
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| 260 |
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| 261 | /* åºåããã¹ããããã¾ã§å¾
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| 262 | ã¤ã*/
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| 263 | syscall(wai_sem(SEM_UDP_POST_OUTPUT));
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| 264 |
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| 265 | for (ix = tmax_udp_ccepid; ix -- > 0; ) {
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| 266 |
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| 267 | if (udp_cep[ix].flags & UDP_CEP_FLG_POST_OUTPUT) {
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| 268 | udp_cep[ix].flags &= ~UDP_CEP_FLG_POST_OUTPUT;
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| 269 | udp_output(&udp_cep[ix]);
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| 270 | }
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| 271 | }
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| 272 | }
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| 273 | }
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| 274 |
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| 275 | #endif /* of #ifdef UDP_CFG_NON_BLOCKING */
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| 276 |
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| 277 | #endif /* of #ifdef SUPPORT_UDP */
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