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    • 38. 发明授权
    • Network adaptor optimization and interrupt reduction
    • 网络适​​配器优化和中断减少
    • US08402190B2
    • 2013-03-19
    • US12326468
    • 2008-12-02
    • Maurice Isrel, Jr.Bruce H. RatcliffJerry W. StevensEdward Zebrowski, Jr.
    • Maurice Isrel, Jr.Bruce H. RatcliffJerry W. StevensEdward Zebrowski, Jr.
    • G06F13/24G06F13/32
    • G06F13/24H04L47/56H04L49/90
    • A method and system are disclosed for network adaptor optimization and interrupt reduction. The method may generate an immediate I/O interrupt notification to a host device driver in response to receiving data from a network. The method may also update an inbound buffer list based on the received data in the inbound buffer queue. Furthermore, the method may set the buffer state from an empty state to a primed state to indicate that the received data is available for processing. The method may also build an outbound buffer list based on outgoing data and add the outgoing data to an outbound buffer queue. Furthermore, the method may set a buffer state from an empty state to a primed state to indicate that the outgoing data is prepared for transmitting and signal a network adaptor with a notification signal.
    • 公开了一种用于网络适配器优化和中断减少的方法和系统。 响应于从网络接收数据,该方法可以产生对主机设备驱动器的即时I / O中断通知。 该方法还可以基于入站缓冲器队列中接收到的数据来更新入站缓冲器列表。 此外,该方法可以将缓冲器状态从空状态设置为初始化状态,以指示所接收的数据可用于处理。 该方法还可以基于输出数据构建出站缓冲器列表,并将输出数据添加到出站缓冲器队列。 此外,该方法可以将缓冲状态从空状态设置为初始化状态,以指示输出数据准备好用于发送信号并通知具有通知信号的网络适配器。
    • 40. 发明申请
    • EFFICIENT HANDLING OF QUEUED-DIRECT I/O REQUESTS AND COMPLETIONS
    • 有效处理QUEUED直接I / O请求和完成
    • US20110106990A1
    • 2011-05-05
    • US12609110
    • 2009-10-30
    • Raymond HiggsGeorge P. KuchBruce H. RatcliffGustav E. Sittmann, IIIJerry W. Stevens
    • Raymond HiggsGeorge P. KuchBruce H. RatcliffGustav E. Sittmann, IIIJerry W. Stevens
    • G06F13/38
    • G06F13/385
    • Computer program products and methods for efficient handling of queued-direct input/output (QDIO) requests and completions at an adapter in communication with an I/O device are provided. A method includes accessing a queue with one or more storage block address lists (SBALs), where each SBAL includes a plurality of storage block address list entries (SBALEs) and is associated with an SLSB. The method further includes reading an SBAL count in one of the SBALEs, where the SBAL count indicates a number of the SBALs forming an I/O request to the I/O device. In response to determining that the SBAL count is greater than one, a number of the SBALs from the queue and associated SLSBs equivalent to the SBAL count are prefetched without waiting for a notification of completion of each of the SBALs forming the I/O request, and states of the associated SLSBs transition from adapter-owned to program-owned.
    • 提供了用于在与I / O设备通信的适配器处有效处理排队直接输入/输出(QDIO)请求和完成的计算机程序产品和方法。 一种方法包括使用一个或多个存储块地址列表(SBAL)访问队列,其中每个SBAL包括多个存储块地址列表条目(SBALE)并且与SLSB相关联。 该方法还包括读取SBALE之一的SBAL计数,其中SBAL计数指示形成I / O设备的I / O请求的SBAL的数目。 响应于确定SBAL计数大于1,来自队列的SBAL和与SBAL计数相关联的相关联的SLSB的数量被预取,而不等待形成I / O请求的每个SBAL的完成通知, 以及相关SLSB从适配器所有权转为程序拥有的状态。