1 | TCP/IP ãããã³ã«ã¹ã¿ãã¯ï¼TINETï¼
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2 | ãªãªã¼ã¹ 1.7ãããã»ããµã»ã·ã¹ãã ä¾åå®ç¾©ï¼»2015/12/19ï¼½
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3 |
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4 | 1. ããã»ããµã»ã·ã¹ãã ä¾åå®ç¾©ã«ã¤ãã¦
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5 |
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6 | TINET ããå¤æ§ãªã¿ã¼ã²ããã«å¯¾å¿ããããã®ãã»ããµã»ã·ã¹ãã ä¾åå®ç¾©
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7 | ã§ã以ä¸ã®ãã¡ã¤ã«ã使ç¨ãã¦ããã
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8 |
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9 | (1) tinet_defs.h
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10 | TINET å
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11 | ¨ä½ãã©ã¡ã¼ã¿ãå®ç¾©ãã 以ä¸ã®ãã¡ã¤ã«ãã¤ã³ã¯ã«ã¼ã
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12 | ãã¦ãããTINET ã®ã«ã¼ããã£ã¬ã¯ããªã«ç½®ãã
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13 |
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14 | (2) tinet_target_defs.hï¼TOPPERS/ASPï¼
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15 | ã¿ã¼ã²ããã«ä¾åãããã©ã¡ã¼ã¿ãå®ç¾©ããã åã·ã¹ãã ã®ã¿ã¼
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16 | ã²ããä¾åé¨ã®ãã£ã¬ã¯ããªã«ç½®ãã
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17 |
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18 | (3) tinet_cpu_defs.hï¼TOPPERS/JSPï¼
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19 | ããã»ããµã«ä¾åãããã©ã¡ã¼ã¿ãå®ç¾©ãããconfig ã®ããã»ã
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20 | ãµç¥ç§°ã®ãã£ã¬ã¯ããªã«ç½®ãã
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21 |
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22 | (4) tinet_nic_defs.h
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23 | ã¤ã¼ãµãããã¤ã³ã¿ãã§ã¼ã¹ã«ä¾åãããã©ã¡ã¼ã¿ãå®ç¾©ããã
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24 | tinet/netdev ã®ãããã¯ã¼ã¯ã¤ã³ã¿ãã§ã¼ã¹ã®ãã£ã¬ã¯ããªã«ç½®ãã
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25 |
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26 | 2. ããã»ããµã«ä¾åããå®ç¾©
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27 |
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28 | (1) CPU_NET_ALIGN
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29 | tinet_target_defs.hï¼TOPPERS/ASPï¼ã tinet_cpu_defs.h
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30 | ï¼TOPPERS/JSPï¼ã§å®ç¾©ãããããã»ããµã®ã¢ã©ã¤ã¡ã³ãã«é¢ããå®
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31 | 義ã§ããã IP ããã以é㯠4 ãªã¯ãããåä½ã«ã¢ã¯ã»ã¹ããå ´å
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32 | ããããIP ããã以éãã4 ãªã¯ãããåä½ã§ãã¢ã©ã¤ã³ããå¿
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33 | è¦
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34 | ãããã° 4 ãæå®ããã ãã®å®ç¾©ã¯ã ãããã¯ã¼ã¯ãããã¡
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35 | T_NET_BUF ã«åæ ãããã
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36 |
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37 | 3. NIC ã«ä¾åããå®ç¾©
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38 |
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39 | (1) IF_ETHER_NIC_HDR_ALIGN
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40 | tinet_nic_defs.h ã§å®ç¾©ããã4 ãªã¯ãããåä½ã«ãã¼ã¿ãå
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41 | ¥åº
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42 | åãã NIC ãããããã¤ã¼ãµãããããã㯠14 ãªã¯ãããã®ããã
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43 | å 2 ãªã¯ããããããã¼ã«ããå¿
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44 | è¦ãããã ãã®ãã㪠NIC ã§ã
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45 | ã¤ã¼ãµãããããã T_ETHER_HDR ã§ãã¢ã©ã¤ã³ã調æ´ããå ´åã¯ã
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46 | 調æ´éãæå®ããã調æ´ããªãå ´åã¯ã 0 ãæå®ããã
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47 |
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48 | (2) IF_PDU_HDR_PADDING
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49 | tinet_nic_defs.h ã§å®ç¾©ããã T_NET_BUF_IF_PDU ã§ããã¬ã¼ã
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50 | ã®çµããã®å¢çã®èª¿æ´éãæå®ãããä¾ãã°ã ã¤ã¼ãµãããã®ãã¬ã¼
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51 | ã é·ï¼CRC ãé¤ãï¼ã® 1,514 ãªã¯ããããã 16 ãªã¯ãããå¢çã«
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52 | 調æ´ããå ´åã¯ã 16 ãªã¯ãããã®åæ°ã§ãã 1,520 ãªã¯ãããã
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53 | ãã®å·®å 6 ãæå®ããã
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54 |
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55 | (3) IF_ETHER_NIC_NET_BUF_ALIGN
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56 | tinet_nic_defs.h ã§å®ç¾©ããããããã¯ã¼ã¯ãããã¡ã§ãã¢ã©ã¤
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57 | ã³ã調æ´ããå ´åã¯ã 調æ´éãæå®ããã調æ´ããªãå ´åã¯ãå®ç¾©
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58 | ããªãã
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