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    Multi-purpose switching network interface controller
    1.
    发明授权
    Multi-purpose switching network interface controller 有权
    多用途交换网络接口控制器

    公开(公告)号：US07447795B2

    公开(公告)日：2008-11-04

    申请号：US10474500

    申请日：2002-04-11

    申请人： Kianoosh Naghshineh ,  Mark Stadler ,  Asgeir Thor Eiriksson

    发明人： Kianoosh Naghshineh ,  Mark Stadler ,  Asgeir Thor Eiriksson

    IPC分类号： G06F13/00

    CPC分类号： G06F13/4027 ,  H04L49/102 ,  H04L49/103 ,  H04L49/201 ,  H04L49/30 ,  H04L49/351 ,  H04L49/354

    摘要： A network interface controller includes a plurality of scatter gather circuits (104a-104d) connectable to a host via a bus (101). A packet buffer (112) is configured for communication with the scatter gather circuits (104a-104d). A plurality of access circuits (110a-110d) are configured to access external network connections. An optional forwarding engine (108) is selectable to generate routing information corresponding to data received via the access circuits (110a-110d) and to provide the routing information to the packet buffer (112).

    摘要翻译： 网络接口控制器包括经由总线（101）可连接到主机的多个散射收集电路（104a-104d）。 分组缓冲器（112）被配置为与散射收集电路（104a-104d）通信。 多个访问电路（110a至110d）被配置为访问外部网络连接。 可选择的转发引擎（108）可选择以产生对应于经由访问电路（110a至110d）接收的数据的路由信息​​，并将路由信息提供给分组缓冲器（112）。

    Reduced-overhead DMA
    2.
    发明授权
    Reduced-overhead DMA 有权
    减少开销的DMA

    公开(公告)号：US06813652B2

    公开(公告)日：2004-11-02

    申请号：US10474499

    申请日：2004-04-19

    申请人： Mark Stadler ,  Asgeir Thor Eiriksson ,  Kianoosh Naghshineh

    发明人： Mark Stadler ,  Asgeir Thor Eiriksson ,  Kianoosh Naghshineh

    IPC分类号： G06F1300

    CPC分类号： G06F13/28

    摘要： A plurality of direct memory access data transfers are accomplished to transfer data from a host to an adaptor. For each transfer, an indication of locations of at least one group of storage locations associated with the host available to hold the data to be transferred to the host is provided from the host to the adaptor. An indication of the provided indication is maintained, for that transfer, by the host. Based on the indication of locations provided from the host to the adaptor, data is transferred to the at least one group of storage locations from the adaptor. An indication is provided from the adaptor to the host that the data transferring step has been completed with respect to the at least one group of storage locations. The host determines the locations corresponding to the at least one group of storage locations based on the indications maintained by the host and retrieving the data from the at least one group of storage locations based on the determination. A similar method is provided to transfer data from the adaptor to the host. Broadly speaking, the host and adaptor retain state information between DMA data transfers. As a result, absolute values of overhead items need not be transferred between the host CPU and the I/O device for each DMA data transfer, and the amount of overhead is reduced.

    摘要翻译： 完成多个直接存储器访问数据传输以将数据从主机传送到适配器。 对于每个传送，从主机向适配器提供与可用于保存要传送到主机的数据相关联的主机的至少一组存储位置的位置的指示。 所提供的指示的指示由主机维护，用于该转移。 基于从主机向适配器提供的位置的指示，数据从适配器传送到至少一组存储位置。 从适配器向主机提供关于至少一组存储位置的数据传送步骤已经完成的指示。 主机基于由主机维护的指示，基于该确定从至少一组存储位置检索数据，来确定对应于至少一组存储位置的位置。 提供了类似的方法来将数据从适配器传输到主机。 一般来说，主机和适配器保留DMA数据传输之间的状态信息。 因此，对于每个DMA数据传输，开销项目的绝对值不需要在主机CPU和I / O设备之间传输，并且开销量减少。