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1. 发明申请

WO2004010311A2 METHOD AND APPARATUS FOR ZERO-COPY RECEIVE BUFFER MANAGEMENT 审中-公开
标题翻译：用于零拷贝接收缓冲器管理的方法和设备
公开(公告)号：WO2004010311A2
公开(公告)日：2004-01-29
申请号：PCT/US2003/018928
申请日：2003-06-17
申请人： SUN MICROSYSTEMS, INC.
发明人： HENDEL, Ariel , BEHRENS, Jochen , SIDDABATHUNI, Ajoy
IPC分类号： G06F13/00
CPC分类号： H04L49/901 , H04L49/90 , H04L49/9052 , H04L49/9094
摘要： An apparatus and method for managing the receipt of communication traffic in the form of packets or other units. The apparatus includes a communication interface (e.g., a NIC, a TCA) coupled to one or more host computer systems. Through Direct Memory Access (DMA) operations, the interface reassembles payloads of received packets in host buffers based on their sequence numbers, without buffering them in the interface. Packet headers are separated from the payloads and passed to a host for protocol processing after the payload DMA is completed. Host buffers may be of virtually any size. For each communication connection, state information is maintained on the interface, which may identify an upper level protocol so that an upper level protocol header is passed to the host as part of the packet header, not as part of the payload. Protocol termination remains in the host.
摘要翻译：用于管理以分组或其他单元的形式接收通信业务的设备和方法。该设备包括耦合到一个或多个主计算机系统的通信接口（例如，NIC，TCA）。通过直接内存访问（Direct Memory Access，DMA）操作，接口基于序列号重新组装主机缓冲区中接收数据包的有效负载，而不会在接口中缓冲它们。数据包头与有效负载分离，并在有效负载DMA完成后传递给主机进行协议处理。主机缓冲区实际上可以是任何大小的。对于每个通信连接，状态信息都保存在接口上，这可以识别上层协议，以便上层协议报头作为数据包报头的一部分传递到主机，而不是作为有效负载的一部分。协议终止保留在主机中。

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