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    Method and apparatus for data communication
    1.
    发明公开
    Method and apparatus for data communication 失效
    Verfahren und Vorrichtung zurDatenübertragung

    公开(公告)号：EP0753817A1

    公开(公告)日：1997-01-15

    申请号：EP96304731.1

    申请日：1996-06-26

    申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

    发明人： Delp, Gary S. ,  Leichty, Philip L. ,  Slane, Albert A.

    IPC分类号： G06F13/12 ,  H04L29/06

    CPC分类号： H04L29/06 ,  G06F13/128 ,  H04L49/90

    摘要： A method and system within a data processing system are disclosed for receiving information from a communications network. The data processing system includes a communications adapter, having an adapter memory, and a host memory. The communications adapter is coupled to the communications network, which transmits information to the data processing system in packets including a packet header and packet data. According to the present invention, a portion of a packet of information is received from the communications network at the adapter memory within the communications adapter. The portion of the packet of information includes at least a packet header that specifies a length of the packet of information and a destination address within the host memory. In response to receipt of the portion of the packet of information, a transfer of the packet of information from the adapter memory to the host memory is prepared prior to receipt of a final portion of the packet of information at the adapter memory. The packet of information is then transferred from the adapter memory to addresses within the host memory beginning with the destination address. Since the transfer is prepared before packet receipt is complete, perceived latency is minimized.

    摘要翻译： 公开了一种用于从通信网络接收信息的数据处理系统内的方法和系统。 数据处理系统包括具有适配器存储器和主机存储器的通信适配器。 通信适配器耦合到通信网络，其以包括分组报头和分组数据的分组向数据处理系统发送信息。 根据本发明，在通信适配器内的适配器存储器处的通信网络中接收信息分组的一部分。 信息分组的部分至少包括指定信息分组的长度的分组报头和主机存储器内的目的地地址。 响应于接收到信息分组的部分，在适配器存储器上接收到信息分组的最后部分之前准备将信息分组从适配器存储器传送到主机存储器。 然后将信息包从适配器存储器转移到主目录地址中，以目的地地址开始。 由于在分组接收完成之前准备传送，所以感知到的等待时间被最小化。