| 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: ip4_var.h 388 2019-05-22 11:25:18Z coas-nagasima $
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| 44 | */
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| 45 |
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| 46 | /*
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| 47 | * Copyright (c) 1982, 1986, 1993
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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 | * @(#)ip_var.h 8.2 (Berkeley) 1/9/95
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| 79 | * $FreeBSD: src/sys/netinet/ip_var.h,v 1.45.2.1 1999/08/29 16:29:51 peter Exp $
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| 80 | */
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| 81 |
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| 82 | #ifndef _IP4_VAR_H_
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| 83 | #define _IP4_VAR_H_
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| 84 |
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| 85 | /*
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| 86 | * IPv4 ãããã»ãã¤ãã¼ãã¢ã¯ã»ã¹ãã¯ã
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| 87 | */
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| 88 |
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| 89 | #define IF_IP4_HDR_SIZE (IF_HDR_SIZE + IP4_HDR_SIZE)
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| 90 |
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| 91 | #define GET_IP4_HDR(nbuf) ((T_IP4_HDR*)((nbuf)->buf + IF_HDR_SIZE))
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| 92 | #define GET_IP4_SDU(nbuf) ((uint8_t*)((nbuf)->buf) + GET_IF_IP4_HDR_SIZE(nbuf))
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| 93 |
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| 94 | #define GET_IP4_HDR_SIZE(nbuf) ((uint8_t)IP4_VHL_HL(GET_IP4_HDR(nbuf)->vhl) << 2)
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| 95 | #define GET_IP4_SDU_SIZE(nbuf) (ntohs(GET_IP4_HDR(nbuf)->len) - GET_IP4_HDR_SIZE(nbuf))
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| 96 | #define GET_IF_IP4_HDR_SIZE(nbuf) (IF_HDR_SIZE + (GET_IP4_HDR_SIZE(nbuf)))
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| 97 |
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| 98 | #define SET_IP4_SDU_SIZE(nbuf,slen) (GET_IP4_HDR(nbuf)->len=(uint16_t)htons((slen) + IP4_HDR_SIZE))
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| 99 |
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| 100 | /*
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| 101 | * IP ã® MSS ãµã¤ãºã®ãããã¯ã¼ã¯ãããã¡
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| 102 | */
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| 103 |
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| 104 | typedef struct t_net_buf_ip_mss {
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| 105 | uint16_t len; /* ãã¼ã¿ã®é·ã */
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| 106 | uint8_t idix; /* mpfid ã®ã¤ã³ããã¯ã¹ */
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| 107 | uint8_t flags; /* ãã©ã° */
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| 108 | #ifdef IF_ETHER_NIC_NET_BUF_ALIGN
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| 109 | uint8_t nalign[IF_ETHER_NIC_NET_BUF_ALIGN];
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| 110 | #endif
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| 111 | #if CPU_NET_ALIGN == 4 && IF_HDR_ALIGN != 4
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| 112 | uint8_t halign[4 - IF_HDR_ALIGN];
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| 113 | #endif
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| 114 | uint8_t buf[IF_HDR_SIZE + IP4_MSS];
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| 115 | /* ãããã¡æ¬ä½ */
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| 116 | } T_NET_BUF_IP_MSS;
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| 117 |
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| 118 | /*
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| 119 | * 65536 ãªã¯ããããµã¤ãºã®ãããã¯ã¼ã¯ãããã¡
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| 120 | */
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| 121 |
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| 122 | typedef struct t_net_buf4_65536 {
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| 123 | uint16_t len; /* ãã¼ã¿ã®é·ã */
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| 124 | uint8_t idix; /* mpfid ã®ã¤ã³ããã¯ã¹ */
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| 125 | uint8_t flags; /* ãã©ã° */
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| 126 | #ifdef IF_ETHER_NIC_NET_BUF_ALIGN
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| 127 | uint8_t nalign[IF_ETHER_NIC_NET_BUF_ALIGN];
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| 128 | #endif
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| 129 | #if CPU_NET_ALIGN == 4 && IF_HDR_ALIGN != 4
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| 130 | uint8_t halign[4 - IF_HDR_ALIGN];
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| 131 | #endif
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| 132 | uint8_t buf[IF_IP4_HDR_SIZE + 65536];
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| 133 | /* ãããã¡æ¬ä½ */
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| 134 | #if defined(IF_PDU_HDR_PADDING)
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| 135 | uint8_t padding[IF_PDU_HDR_PADDING];
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| 136 | #endif /* ãããã®ä½å */
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| 137 | } T_NET_BUF4_65536;
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| 138 |
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| 139 | #ifdef IP4_CFG_FRAGMENT
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| 140 |
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| 141 | /*
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| 142 | * åæ§æãã¥ã¼ç¨ IPv4 ãããã®å®ç¾©
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| 143 | */
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| 144 |
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| 145 | typedef struct t_qip4_hdr {
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| 146 | uint8_t vhl; /* version << 4 | header length >> 2 */
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| 147 | /* length 㯠4 octets åä½ */
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| 148 | uint8_t type; /* type of services */
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| 149 | uint16_t len; /* total length */
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| 150 |
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| 151 | uint16_t id; /* identification */
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| 152 | uint16_t flg_off; /* fragment flag & offset */
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| 153 |
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| 154 | uint8_t ttl; /* time to live */
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| 155 | uint8_t proto; /* protocol */
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| 156 | uint16_t sum; /* checksum */
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| 157 |
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| 158 | uint32_t src; /* source address */
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| 159 |
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| 160 | T_NET_BUF *next; /* 次㮠IPv4 ãã©ã°ã¡ã³ã */
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| 161 | } __attribute__((packed, aligned(2))) T_QIP4_HDR;
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| 162 |
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| 163 | #define QIP4_HDR_SIZE (sizeof(T_QIP4_HDR))
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| 164 | #define IF_QIP4_HDR_SIZE (IF_HDR_SIZE + QIP4_HDR_SIZE)
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| 165 |
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| 166 | #define GET_QIP4_HDR(nbuf) ((T_QIP4_HDR*)((nbuf)->buf + IF_HDR_SIZE))
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| 167 | #define GET_QIP4_SDU(nbuf) ((uint8_t*)(nbuf)->buf + GET_IF_QIP4_HDR_SIZE(nbuf))
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| 168 |
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| 169 | #define GET_QIP4_HDR_SIZE(iph) ((uint8_t)IP4_VHL_HL((iph)->vhl) << 2)
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| 170 | #define GET_IF_QIP4_HDR_SIZE(nbuf) (IF_HDR_SIZE + (GET_QIP4_HDR_SIZE(GET_QIP4_HDR(nbuf))))
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| 171 |
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| 172 | /*
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| 173 | * ãã¼ã¿ã°ã©ã åæ§æç¨ãããã¯ã¼ã¯ãããã¡
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| 174 | */
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| 175 |
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| 176 | typedef struct t_net_buf4_reassm {
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| 177 | uint16_t len; /* ãã¼ã¿ã®é·ã */
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| 178 | uint8_t idix; /* mpfid ã®ã¤ã³ããã¯ã¹ */
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| 179 | uint8_t flags; /* ãã©ã° */
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| 180 | #ifdef IF_ETHER_NIC_NET_BUF_ALIGN
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| 181 | uint8_t nalign[IF_ETHER_NIC_NET_BUF_ALIGN];
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| 182 | #endif
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| 183 | #if CPU_NET_ALIGN == 4 && IF_HDR_ALIGN != 4
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| 184 | uint8_t align[4 - IF_HDR_ALIGN];
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| 185 | #endif
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| 186 | uint8_t buf[IP4_CFG_FRAG_REASSM_SIZE];
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| 187 | /* ãããã¡æ¬ä½ */
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| 188 | } __attribute__((packed, aligned(2))) T_NET_BUF4_REASSM;
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| 189 |
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| 190 | #endif /* of #ifdef IP4_CFG_FRAGMENT */
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| 191 |
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| 192 | /*
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| 193 | * TCP ã®åæ§æãã¥ã¼ã«ããã IPv4 ãããã®å®ç¾©
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| 194 | */
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| 195 |
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| 196 | typedef struct t_ip4_tcp_q_hdr {
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| 197 | uint8_t vhl; /* version << 4 | header length >> 2 */
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| 198 | /* length 㯠4 octets åä½ */
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| 199 | uint8_t type; /* type of services */
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| 200 | uint16_t len; /* total length */
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| 201 |
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| 202 | uint16_t id; /* identification */
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| 203 | uint16_t flg_off; /* fragment flag & offset */
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| 204 |
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| 205 | uint8_t ttl; /* time to live */
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| 206 | uint8_t proto; /* protocol */
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| 207 | uint16_t thoff; /* TCP ãããã®ãªãã»ãã */
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| 208 |
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| 209 | T_IN4_ADDR src; /* source address */
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| 210 | T_IN4_ADDR dst; /* destination address */
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| 211 | } __attribute__((packed, aligned(2))) T_IP4_TCP_Q_HDR;
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| 212 |
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| 213 | #ifdef SUPPORT_MIB
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| 214 |
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| 215 | /*
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| 216 | * SNMP 㮠管çæ
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| 217 | å ±ãã¼ã¹ (MIB)
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| 218 | */
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| 219 |
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| 220 | typedef struct t_ip_stats {
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| 221 | uint32_t ipInReceives;
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| 222 | uint32_t ipInHdrErrors;
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| 223 | uint32_t ipInAddrErrors;
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| 224 | /* uint32_t ipForwDatagrams;*/
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| 225 | uint32_t ipInUnknownProtos;
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| 226 | /* uint32_t ipInDiscards;*/
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| 227 | uint32_t ipInDelivers;
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| 228 | uint32_t ipOutRequests;
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| 229 | uint32_t ipOutDiscards;
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| 230 | /* uint32_t ipOutNoRoutes;*/
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| 231 |
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| 232 | #ifdef IP4_CFG_FRAGMENT
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| 233 |
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| 234 | uint32_t ipReasmReqds;
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| 235 | uint32_t ipReasmOKs;
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| 236 | uint32_t ipReasmFails;
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| 237 | uint32_t ipFragOKs;
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| 238 | uint32_t ipFragFails;
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| 239 | uint32_t ipFragCreates;
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| 240 |
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| 241 | #else /* of #ifdef IP4_CFG_FRAGMENT */
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| 242 |
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| 243 | uint32_t ipReasmReqds;
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| 244 | /* uint32_t ipReasmOKs;*/
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| 245 | uint32_t ipReasmFails;
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| 246 | /* uint32_t ipFragOKs;*/
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| 247 | /* uint32_t ipFragFails;*/
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| 248 | /* uint32_t ipFragCreates;*/
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| 249 |
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| 250 | #endif /* of #ifdef IP4_CFG_FRAGMENT */
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| 251 |
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| 252 | } T_IP_STATS;
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| 253 |
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| 254 | extern T_IP_STATS ip_stats;
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| 255 |
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| 256 | #endif /* of #ifdef SUPPORT_MIB */
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| 257 |
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| 258 | /*
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| 259 | * é¢æ°
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| 260 | */
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| 261 |
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| 262 | extern void ip_frag_timer (void);
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| 263 | extern void ip_init (void);
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| 264 | extern ER ip_remove_options (T_NET_BUF *nbuf);
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| 265 | extern ER ip_output (T_NET_BUF *nbuf, TMO tmout);
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| 266 | extern void ip_exchg_addr (T_NET_BUF *nbuf);
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| 267 |
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| 268 | #endif /* of #ifndef _IP4_VAR_H_ */
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