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    Apparatus and Method for Supporting Connection Establishment in an Offload of Network Protocol Processing
    1.
    发明申请
    Apparatus and Method for Supporting Connection Establishment in an Offload of Network Protocol Processing 有权
    支持网络协议处理卸载中连接建立的装置和方法

    公开(公告)号：US20090222564A1

    公开(公告)日：2009-09-03

    申请号：US12464741

    申请日：2009-05-12

    申请人： Douglas Morgan Freimuth ,  Elbert C. Hu ,  Ronald Mraz ,  Erich M. Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Michael Tracey

    发明人： Douglas Morgan Freimuth ,  Elbert C. Hu ,  Ronald Mraz ,  Erich M. Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Michael Tracey

    IPC分类号： G06F15/16

    CPC分类号： H04L69/166 ,  H04L49/90 ,  H04L49/901 ,  H04L69/161 ,  H04L69/163

    摘要： A number of improvements in network adapters that offload protocol processing from the host processor are provided. Specifically, a mechanism for improving connection establishment in a system utilizing an offload network adapter is provided. The connection establishment mechanism provides the ability to offload connection establishment and maintenance of connection state information to the offload network adapter. As a result of this offloading of connection establishment and state information maintenance, the number of communications needed between the host system and the offload network adapter may be reduced. In addition, offloading of these functions to the offload network adapter permits bulk notification of established connections and state information to the host system rather than piecemeal notifications as is present in known computing systems.

    摘要翻译： 提供了从主机处理器卸载协议处理的网络适配器的许多改进。 具体地，提供了一种用于改善利用卸载网络适配器的系统中的连接建立的机制。 连接建立机制提供将连接状态信息的连接建立和维护卸载到卸载网络适配器的能力。 由于连接建立和状态信息维护的这种卸载的结果，可以减少主机系统和卸载网络适配器之间所需的通信数量。 另外，将这些功能卸载到卸载网络适配器允许将已建立的连接和状态信息批量通知给主机系统，而不是按照已知的计算系统中存在的零碎的通知。

    State recovery and failover of intelligent network adapters
    3.
    发明授权
    State recovery and failover of intelligent network adapters 有权
    智能网络适配器的状态恢复和故障转移

    公开(公告)号：US07114096B2

    公开(公告)日：2006-09-26

    申请号：US10406095

    申请日：2003-04-02

    申请人： Douglas Morgan Freimuth ,  Ronald Mraz ,  Erich Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Michael Tracey

    发明人： Douglas Morgan Freimuth ,  Ronald Mraz ,  Erich Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Michael Tracey

    IPC分类号： G06F11/00

    CPC分类号： H04L69/16 ,  H04B1/74 ,  H04L1/1809 ,  H04L1/1835 ,  H04L1/1874 ,  H04L69/12 ,  H04L69/161 ,  H04L69/163 ,  H04L69/40

    摘要： The present invention provides a method, computer program product, and data processing system for efficiently recovering state and performing failover of a network offload engine. The present invention distinguishes between the hard state and the soft state of a protocol. Hard state is state information that, when lost, leads to incorrect protocol behavior. Soft state is state information that may be lost or become inconsistent without loss of correctness. The present invention ensures correctness by always being able to recover the hard state of the protocol. A preferred embodiment of the present invention performs a failover of a network offload engine by temporarily blocking the reception of network packets, recovering hard state from host information, resuming network operation using a substitute network offload engine, and recovering soft state from the subsequent network activity.

    摘要翻译： 本发明提供了一种用于有效地恢复网络卸载引擎的状态和执行故障切换的方法，计算机程序产品和数据处理系统。 本发明区分协议的硬状态和软状态。 硬态是状态信息，当丢失时会导致不正确的协议行为。 软状态是可能丢失或变得不一致而不失去正确性的状态信息。 本发明通过总是能够恢复协议的硬状态来确保正确性。 本发明的优选实施例通过暂时阻止网络分组的接收，从主机信息恢复硬状态，使用替代网络卸载引擎恢复网络操作，以及从后续网络活动中恢复软状态来执行网络卸载引擎的故障转移 。

    Apparatus and method for supporting memory management in an offload of network protocol processing
    4.
    发明申请
    Apparatus and method for supporting memory management in an offload of network protocol processing 有权
    用于在卸载网络协议处理中支持存储器管理的装置和方法

    公开(公告)号：US20060015651A1

    公开(公告)日：2006-01-19

    申请号：US10890978

    申请日：2004-07-14

    申请人： Douglas Freimuth ,  Elbert Hu ,  Ronald Mraz ,  Erich Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Tracey

    发明人： Douglas Freimuth ,  Elbert Hu ,  Ronald Mraz ,  Erich Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Tracey

    IPC分类号： G06F15/16

    CPC分类号： G06F13/30

    摘要： A number of improvements in network adapters that offload protocol processing from the host processor are provided. Specifically, mechanisms for handling memory management and optimization within a system utilizing an offload network adapter are provided. The memory management mechanism permits both buffered sending and receiving of data as well as zero-copy sending and receiving of data. In addition, the memory management mechanism permits grouping of DMA buffers that can be shared among specified connections based on any number of attributes. The memory management mechanism further permits partial send and receive buffer operation, delaying of DMA requests so that they may be communicated to the host system in bulk, and expedited transfer of data to the host system.

    摘要翻译： 提供了从主机处理器卸载协议处理的网络适配器的许多改进。 具体地说，提供了利用卸载网络适配器在系统内处理存储器管理和优化的机制。 存储器管理机制允许数据的缓冲发送和接收以及零拷贝发送和接收数据。 此外，存储器管理机制允许基于任何数量的属性对可以在指定连接之间共享的DMA缓冲器进行分组。 存储器管理机制进一步允许部分发送和接收缓冲器操作，延迟DMA请求，使得它们可以批量地传送到主机系统，并且将数据快速传送到主机系统。

    Method and apparatus for network communication card memory management
    5.
    发明授权
    Method and apparatus for network communication card memory management 失效
    网络通信卡存储器管理的方法和装置

    公开(公告)号：US06968358B2

    公开(公告)日：2005-11-22

    申请号：US10205024

    申请日：2002-07-25

    申请人： Douglas Freimuth ,  Roland Mraz ,  Erich M. Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Michael Tracey

    发明人： Douglas Freimuth ,  Roland Mraz ,  Erich M. Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Michael Tracey

    IPC分类号： G06F9/46 ,  G06F12/00 ,  G06F15/16 ,  G06F15/167

    CPC分类号： G06F9/544

    摘要： A method, apparatus, and computer instructions for transferring data objects. A request for a data object is received at a communication adapter. A determination is made as to whether the data object is stored in a memory in the communication adapter in response to receiving the request. The data object is transferred from the memory to a receiver of the data object through the communication adapter in which transfer of the data across a bus connecting the communication adapter to the data processing system is unnecessary in response to the data object being present in the memory.

    摘要翻译： 一种用于传送数据对象的方法，装置和计算机指令。 在通信适配器处接收到对数据对象的请求。 响应于接收到请求，确定数据对象是否存储在通信适配器中的存储器中。 数据对象通过通信适配器从存储器传送到数据对象的接收器，其中响应于存储在存储器中的数据对象，不需要通过连接通信适配器到数据处理系统的总线的数据传输 。

    Apparatus and Method for Supporting Memory Management in an Offload of Network Protocol Processing
    8.
    发明申请
    Apparatus and Method for Supporting Memory Management in an Offload of Network Protocol Processing 有权
    用于支持网络协议处理卸载中的存储器管理的装置和方法

    公开(公告)号：US20110167134A1

    公开(公告)日：2011-07-07

    申请号：US13045392

    申请日：2011-03-10

    申请人： Douglas Morgan Freimuth ,  Elbert C. Hu ,  Ronald Mraz ,  Erich M. Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Michael Tracey

    发明人： Douglas Morgan Freimuth ,  Elbert C. Hu ,  Ronald Mraz ,  Erich M. Nahum ,  Prashant Pradhan ,  Sambit Sahu ,  John Michael Tracey

    IPC分类号： G06F15/16

    CPC分类号： G06F13/30

    摘要： A number of improvements in network adapters that offload protocol processing from the host processor are provided. Specifically, mechanisms for handling memory management and optimization within a system utilizing an offload network adapter are provided. The memory management mechanism permits both buffered sending and receiving of data as well as zero-copy sending and receiving of data. In addition, the memory management mechanism permits grouping of DMA buffers that can be shared among specified connections based on any number of attributes. The memory management mechanism further permits partial send and receive buffer operation, delaying of DMA requests so that they may be communicated to the host system in bulk, and expedited transfer of data to the host system.

    摘要翻译： 提供了从主机处理器卸载协议处理的网络适配器的许多改进。 具体地说，提供了利用卸载网络适配器在系统内处理存储器管理和优化的机制。 存储器管理机制允许数据的缓冲发送和接收以及零拷贝发送和接收数据。 此外，存储器管理机制允许基于任何数量的属性对可以在指定连接之间共享的DMA缓冲器进行分组。 存储器管理机制进一步允许部分发送和接收缓冲器操作，延迟DMA请求，使得它们可以批量地传送到主机系统，并且将数据快速传送到主机系统。

    Method for generating an annotated network topology
    10.
    发明授权
    Method for generating an annotated network topology 失效
    生成注释网络拓扑的方法

    公开(公告)号：US07782796B2

    公开(公告)日：2010-08-24

    申请号：US11204856

    申请日：2005-08-16

    申请人： Michael R. Haley ,  Prashant Pradhan ,  Debanjan Saha ,  Sambit Sahu ,  Manpreet Singh

    发明人： Michael R. Haley ,  Prashant Pradhan ,  Debanjan Saha ,  Sambit Sahu ,  Manpreet Singh

    IPC分类号： H04L12/28

    CPC分类号： H04L43/0882 ,  H04L41/12 ,  H04L43/0829 ,  H04L43/0852

    摘要： A method of generating an annotated network topology of a network is described. The method includes; deriving a network topology by performing a route tracing utility between each pair of endpoints to determine the route taken by packets; initially annotating each network path with an initial value; determining the available bandwidth of a path connecting a pair of endpoints by performing Transfer Control Protocol (TCP) flows between the pair of endpoints; identifying a bottleneck link in the network path, and annotating all edges to generate an annotated network topology wherein available bandwidth annotation of links inside the network is determined using end-to-end network measurements.

    摘要翻译： 描述了一种生成网络的注释网络拓扑的方法。 该方法包括： 通过在每对端点之间执行路由跟踪实用程序来导出网络拓扑，以确定分组采用的路由; 用初始值初始化每个网络路径; 通过在所述一对端点之间执行传输控制协议（TCP）流来确定连接一对端点的路径的可用带宽; 识别网络路径中的瓶颈链接，以及注释所有边缘以生成注释网络拓扑，其中使用端对端网络测量确定网络内的链路的可用带宽注释。