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Ö÷ÒªÓУº/net/socket.c /net/protocols.c etc
INET socket²ã£ºBSD socketÊǸö¿ÉÒÔÓÃÓÚ¸÷ÖÖÍøÂçЭÒéµÄ½Ó¿Ú£¬¶øµ±ÓÃÓÚtcp/ip£¬¼´½¨Á¢ÁËAF_INETÐÎʽµÄsocketʱ£¬
»¹ÐèÒª±£ÁôЩ¶îÍâµÄ²ÎÊý£¬ÓÚÊǾÍÓÐÁËstruct sock½á¹¹¡£ÎļþÖ÷ÒªÓУº/net/ipv4/protocol.c /net/ipv4/af_inet.c /net/core/sock.c etc
TCP/UDP²ã£º´¦Àí´«Êä²ãµÄ²Ù×÷£¬´«Êä²ãÓÃstruct inet_protocolºÍstruct protoÁ½¸ö½á¹¹±íʾ¡£ÎļþÖ÷Òª
ÓУº/net/ipv4/udp.c /net/ipv4/datagram.c /net/ipv4/tcp.c /net/ipv4/tcp_input.c /net/ipv4//tcp_output.c /net/ipv4/tcp_minisocks.c /net/ipv4/tcp_output.c /net/ipv4/tcp_timer.c
etc  
     
IP²ã£º´¦ÀíÍøÂç²ãµÄ²Ù×÷£¬ÍøÂç²ãÓÃstruct packet_type½á¹¹±íʾ¡£ÎļþÖ÷ÒªÓУº/net/ipv4/ip_forward.c
ip_fragment.c ip_input.c ip_output.c etc.
Êý¾ÝÁ´Â·²ãºÍÇý¶¯³ÌÐò£ºÃ¿¸öÍøÂçÉ豸ÒÔstruct net_device±íʾ£¬Í¨ÓõĴ¦ÀíÔÚdev.cÖУ¬Çý¶¯³ÌÐò¶¼ÔÚ/driver/netÄ¿
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|        sys_read                 fs/read_write.c
|        sock_read                net/socket.c
|        sock_recvmsg             net/socket.c
|        inet_recvmsg             net/ipv4/af_inet.c
|        udp_recvmsg              net/ipv4/udp.c
|        skb_recv_datagram        net/core/datagram.c
|        --------------


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