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    Efficient handling of queued-direct I/O requests and completions
    1.
    发明授权
    Efficient handling of queued-direct I/O requests and completions 有权
    排队直接I / O请求和完成的高效处理

    公开(公告)号：US08055817B2

    公开(公告)日：2011-11-08

    申请号：US12609110

    申请日：2009-10-30

    申请人： Raymond Higgs ,  George P. Kuch ,  Bruce H. Ratcliff ,  Gustav E. Sittmann, III ,  Jerry W. Stevens

    发明人： Raymond Higgs ,  George P. Kuch ,  Bruce H. Ratcliff ,  Gustav E. Sittmann, III ,  Jerry W. Stevens

    IPC分类号： G06F13/00 ,  G06F3/00

    CPC分类号： G06F13/385

    摘要： 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.

    摘要翻译： 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。

    EFFICIENT HANDLING OF QUEUED-DIRECT I/O REQUESTS AND COMPLETIONS
    2.
    发明申请
    EFFICIENT HANDLING OF QUEUED-DIRECT I/O REQUESTS AND COMPLETIONS 有权
    有效处理QUEUED直接I / O请求和完成

    公开(公告)号：US20110106990A1

    公开(公告)日：2011-05-05

    申请号：US12609110

    申请日：2009-10-30

    申请人： Raymond Higgs ,  George P. Kuch ,  Bruce H. Ratcliff ,  Gustav E. Sittmann, III ,  Jerry W. Stevens

    发明人： Raymond Higgs ,  George P. Kuch ,  Bruce H. Ratcliff ,  Gustav E. Sittmann, III ,  Jerry W. Stevens

    IPC分类号： G06F13/38

    CPC分类号： G06F13/385

    摘要： 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.

    摘要翻译： 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。

    NETWORK ADAPTOR OPTIMIZATION AND INTERRUPT REDUCTION
    5.
    发明申请
    NETWORK ADAPTOR OPTIMIZATION AND INTERRUPT REDUCTION 有权
    网络适​​配器优化和中断减少

    公开(公告)号：US20100138579A1

    公开(公告)日：2010-06-03

    申请号：US12326468

    申请日：2008-12-02

    申请人： Maurice Isrel, JR. ,  Bruce H. Ratcliff ,  Jerry W. Stevens ,  Edward Zebrowski, JR.

    发明人： Maurice Isrel, JR. ,  Bruce H. Ratcliff ,  Jerry W. Stevens ,  Edward Zebrowski, JR.

    IPC分类号： G06F13/24

    CPC分类号： G06F13/24 ,  H04L47/56 ,  H04L49/90

    摘要： 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.

    摘要翻译： 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。

    Dynamic blocking in a shared host-network interface
    6.
    发明授权
    Dynamic blocking in a shared host-network interface 有权
    在共享的主机 - 网络接口中动态阻止

    公开(公告)号：US07646724B2

    公开(公告)日：2010-01-12

    申请号：US10435882

    申请日：2003-05-12

    申请人： Thomas D. Moore ,  Bruce H. Ratcliff ,  Jerry W. Stevens ,  Stephen R. Valley

    发明人： Thomas D. Moore ,  Bruce H. Ratcliff ,  Jerry W. Stevens ,  Stephen R. Valley

    IPC分类号： H04L1/00

    CPC分类号： H04L47/10 ,  H04L47/32

    摘要： A method, system, and program product for a data processing system having multiple hosts which dynamically determines blocking of packets in the data processing system. A connection is established between a host and an adapter for communication with a Local Area Network. A set of parameters is established for blocking packets transmitted from the adapter to the host. The set of parameters is stored in the adapter to be used by that connection. The packets transmitted from the adapter to the host are grouped or blocked in accordance with the set of parameters for that connection. Periodically, the packets being transmitted from the adapter to the host are evaluated for determining changes in the parameters. Changes to the set of parameters are recorded in the adapter for that connection to the host. Where there are multiple connections established between the adapter and multiple hosts, a set of parameters to be used for each connection is established such that packets are blocked in accordance with a respective set of parameters for a respective one of the hosts.

    摘要翻译： 一种用于具有多个主机的数据处理系统的方法，系统和程序产品，所述多个主机动态地确定数据处理系统中的分组的阻塞。 在主机和适配器之间建立与局域网进行通信的连接。 建立一组参数来阻止从适配器发送到主机的数据包。 参数集存储在适配器中以供该连接使用。 根据该连接的一组参数，从适配器发送到主机的数据包被分组或阻塞。 定期地，从适配器发送到主机的分组被评估以确定参数的变化。 参数集中的更改记录在与主机的连接的适配器中。 在适配器和多个主机之间建立多个连接的地方，建立用于每个连接的一组参数，使得根据相应的一个主机的相应参数集来阻止分组。

    Dynamically calculating an inbound blocking factor using operating-system-level conditions
    7.
    发明授权
    Dynamically calculating an inbound blocking factor using operating-system-level conditions 有权
    使用操作系统级别的条件动态计算入站阻塞因子

    公开(公告)号：US08825892B2

    公开(公告)日：2014-09-02

    申请号：US12102458

    申请日：2008-04-14

    申请人： Maurice Isrel, Jr. ,  Thomas D. Moore ,  Bruce H. Ratcliff ,  Jerry W. Stevens

    发明人： Maurice Isrel, Jr. ,  Thomas D. Moore ,  Bruce H. Ratcliff ,  Jerry W. Stevens

    IPC分类号： G06F15/16 ,  H04L12/56

    CPC分类号： H04L49/9068 ,  H04L47/822 ,  H04L49/90 ,  H04L49/9063

    摘要： A current value of a changing operating-system-level condition can be determined, wherein the operating-system level condition is a condition of a host related to an operating system resource utilization or an operating system experienced latency. The operating-system level condition can be a condition of a layer of the OSI model above the Data Link Layer. An inbound blocking factor algorithm can execute that uses the determined current value as a variable. A value for an inbound blocking factor can be generated as a result of executing the inbound blocking factor algorithm. The generated value can be utilized as the inbound blocking factor to determine a manner in which incoming messages are to be conveyed from a network adaptor, through an adaptor interface boundary, to an operating system of the host.

    摘要翻译： 可以确定改变的操作系统级条件的当前值，其中操作系统级别条件是与操作系统资源利用相关的主机的条件或操作系统经历的等待时间。 操作系统级别条件可以是数据链路层上方的OSI模型的层的条件。 可以执行使用确定的当前值作为变量的入站阻塞因子算法。 可以通过执行入站阻塞因子算法来生成入站阻塞因子的值。 生成的值可以用作入站阻塞因子，以确定将从网络适配器通过适配器接口边界向主机的操作系统传送传入消息的方式。

    APPARATUS, SYSTEM, AND METHOD FOR TRANSPARENT ETHERNET LINK PAIRING
    9.
    发明申请
    APPARATUS, SYSTEM, AND METHOD FOR TRANSPARENT ETHERNET LINK PAIRING 审中-公开
    用于透明以太网链路配对的装置，系统和方法

    公开(公告)号：US20100138567A1

    公开(公告)日：2010-06-03

    申请号：US12326570

    申请日：2008-12-02

    申请人： Jeffrey D. Haggar ,  Maurice Isrel, JR. ,  Bruce H. Ratcliff ,  Jerry W. Stevens ,  Edward Zebrowski, JR.

    发明人： Jeffrey D. Haggar ,  Maurice Isrel, JR. ,  Bruce H. Ratcliff ,  Jerry W. Stevens ,  Edward Zebrowski, JR.

    IPC分类号： G06F3/00 ,  G06F15/16

    CPC分类号： H04L69/40 ,  H04L69/14 ,  H04L69/32

    摘要： A solution for reducing latency in a host computing device communicating with network-attached devices over a network. The host includes two network adapters that each support bidirectional communications with the host. The solution includes a dual module that represents the two network adapters as a single logical interface to both the host and the network-attached devices. An inbound module directs inbound data sent to the interface by the devices through one of the network adapters, while an outbound module directs outbound data sent to the interface by the host through the other. In one embodiment, the outbound module is responsible for intercepting data sent to the interface and sending it through the network adapter dedicated to outbound communications. The solution also includes a mode module to enable the latency reduction apparatus, and a collapse module that enables bidirectional communications through the remaining network adapter if a network adapter fails.

    摘要翻译： 一种用于减少主机计算设备中通过网络与网络连接设备进行通信的延迟的解决方案。 主机包括两个网络适配器，每个网络适配器都支持与主机的双向通信。 该解决方案包括一个双模块，将两个网络适配器表示为主机和连接网络的设备的单一逻辑接口。 入站模块通过其中一个网络适配器指导设备发送到接口的入站数据，而出站模块通过另一个指导主机发送到接口的出站数据。 在一个实施例中，出站模块负责拦截发送到接口的数据，并通过专用于出站通信的网络适配器发送数据。 解决方案还包括一个模块模块，用于启用延迟减少装置，以及一个崩溃模块，如果网络适配器发生故障，则能够通过剩余的网络适配器实现双向通信。