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1.发明授权Performance enhancement for ANSI X3.92 data encryption algorithm standard 失效ANSI X3.92数据加密算法标准的性能提升
公开(公告)号：US5317638A
公开(公告)日：1994-05-31
申请号：US916777
申请日：1992-07-17
CPC分类号： H04L9/0625
摘要： ANSI X3.92 Data Encryption algorithm is public knowledge, and is widely used where data security and integrity is vital, such as commercial banks, secret service organizations etc. Even though this algorithm is feasible to implement in software, it is impractical to achieve desired performance for most of the applications. Hence, a hardware solution is highly recommended. Prior art DES hardware in CMOS technology served performance needs of low-end and mid-range systems only, due to the technology constraints. However, some of these constraints are removed through the technology breakthroughs and the current CMOS is well suited for high performance applications. While prior art DES designs allowed one round per cycle to minimize the cell count, the current technology allows of multiple rounds per cycle due to the denser CMOS chip technology. In order to maximize the number of rounds for a given cycle time, careful study of algorithm to determine the critical paths from a logic implementation perspective is required. This invention identifies one such path in f-function of the DES algorithm, where the expanded data and the key is XOR'd prior to entering S-function. It is mathematically proven that if the left half of the input data is expanded and XOR'ed with the second key at the same time the right half of the input data which is still going through its XOR, S-function, permute and expansion, then this expanded result can be immediately XOR'ed with the left input data being expanded and XOR'ed in parallel. The resulting output can be used as input to the next S-function, thus eliminating a stage of expansion and XOR logic for all subsequent S-function inputs in rounds 2 through 15.
摘要翻译： ANSI X3.92数据加密算法是公共知识，在数据安全和完整性至关重要的情况下被广泛使用，如商业银行，秘密服务机构等。即使这种算法在软件中实现是可行的，实现期望是不切实际的 大多数应用的性能。 因此，强烈建议使用硬件解决方案。 由于技术上的限制，现有技术的CMOS技术的DES硬件只能满足低端和中端系统的性能需求。 然而，通过技术突破，可以消除其中的一些限制，目前的CMOS非常适合高性能应用。 虽然现有技术的DES设计允许每个周期一个循环以使细胞计数最小化，但由于采用更密集的CMOS芯片技术，目前的技术允许每个周期多轮。 为了最大化给定循环时间的轮数，需要从逻辑实现的角度仔细研究确定关键路径的算法。 本发明在DES算法的f函数中识别一个这样的路径，其中扩展的数据和密钥在进入S函数之前是异或的。 在数学上证明，如果输入数据的左半部分在第二个键的同时被扩展并且与正在经历其XOR，S函数，置换和扩展的输入数据的右半部分相异， 那么这个扩展结果可以立即异或左输入数据被扩展并并行XOR。 所得到的输出可以用作下一个S函数的输入，从而消除了第2到15周期中所有后续S函数输入的扩展阶段和异或逻辑。
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公开(公告)号：US5381480A
公开(公告)日：1995-01-10
申请号：US124151
申请日：1993-09-20
CPC分类号： H04L9/0625 , H04L2209/125 , H04L2209/24
摘要： A system translates a first group of cipher blocks based on a first encryption key to a second group of respective cipher blocks based on a second encryption key. Respective cipher blocks of the first and second groups represent the same data. The system comprises decryption hardware for sequentially decrypting the cipher blocks of the first group based on the first key. Encryption hardware is coupled to receive decrypted blocks output from the decryption hardware and sequentially encrypts the decrypted blocks into respective cipher blocks of the second group based on the second encryption key. A control unit controls the encryption hardware to encrypt the decrypted blocks into the respective cipher blocks of the second group while the decryption hardware decrypts cipher blocks of the first group. Consequently, decryption and encryption operations occur in parallel and the translation process is expedited.
摘要翻译： 系统基于第二加密密钥将基于第一加密密钥的第一组密码块转换为第二组相应加密块。 第一组和第二组的各个密码块表示相同的数据。 该系统包括用于基于第一密钥顺序地解密第一组的密码块的解密硬件。 加密硬件被耦合以接收从解密硬件输出的解密块，并且基于第二加密密钥将解密的块顺序地加密成第二组的相应加密块。 控制单元控制加密硬件将解密块加密成第二组的相应加密块，同时解密硬件解密第一组的加密块。 因此，解密和加密操作并行发生，并且加速了翻译过程。
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3.发明授权Large send support in layer 2 switch to enhance effectiveness of large receive on NIC and overall network throughput 有权在第2层交换机中大量发送支持，以提高NIC上大型接收和整体网络吞吐量的有效性公开(公告)号：US09143462B2
公开(公告)日：2015-09-22
申请号：US12421731
申请日：2009-04-10
申请人： Binh K. Hua , Sivarama K. Kodukula
发明人： Binh K. Hua , Sivarama K. Kodukula
IPC分类号： H04L12/933
CPC分类号： H04L49/10
摘要： The present disclosure is directed to a method for delivering a plurality of packets from a network switch to a receiving node. The method may comprise collecting a plurality of packets received at the network switch during a time window; arranging the plurality of packets based on a source address, a package number, and a destination address for each one of the plurality of packets collected during the time window; and delivering the arranged plurality of packets to the receiving node.
摘要翻译： 本公开涉及一种用于将多个分组从网络交换机递送到接收节点的方法。 该方法可以包括在时间窗口期间收集在网络交换机处接收的多个分组; 基于在时间窗口期间收集的多个分组中的每个分组的源地址，包编号和目的地地址来排列多个分组; 以及将所排列的多个分组递送到所述接收节点。
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公开(公告)号：US08347142B2
公开(公告)日：2013-01-01
申请号：US13050372
申请日：2011-03-17
IPC分类号： G06F11/00
CPC分类号： G06F11/2221 , G06F11/004 , G06F11/2017
摘要： A primary I/O adapter and a redundant I/O adapter of a data processing system are assigned to support access to a system resource. While the primary I/O adapter is in service and the redundant I/O adapter is not in service in providing access to the system resource, a fail over command is issued to remove the primary I/O adapter from service and place the redundant I/O adapter in service in supporting access to the system resource. While the redundant I/O adapter is in service and the primary I/O adapter is not in service in providing access to the system resource, diagnostic testing on the primary I/O adapter is performed. In response to the diagnostic testing revealing no fault in the primary I/O adapter, a fail back command is issued to restore the primary I/O adapter to service and to remove the redundant I/O adapter from service.
摘要翻译： 分配数据处理系统的主I / O适配器和冗余I / O适配器以支持对系统资源的访问。 当初级I / O适配器处于使用状态并且冗余I / O适配器未提供对系统资源的访问时，将发出故障切换命令以从服务中删除主I / O适配器并将冗余I / / O适配器在服务中支持对系统资源的访问。 当冗余I / O适配器处于使用状态并且主I / O适配器未提供对系统资源的访问时，将执行主I / O适配器的诊断测试。 响应诊断测试显示主I / O适配器无故障，将发出故障恢复命令以恢复主要I / O适配器的服务，并从服务中删除冗余I / O适配器。
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公开(公告)号：US08006133B2
公开(公告)日：2011-08-23
申请号：US12031417
申请日：2008-02-14
IPC分类号： G06F11/00
CPC分类号： G06F11/2221 , G06F11/004 , G06F11/2017
摘要： A primary I/O adapter and a redundant I/O adapter of a data processing system are assigned to support access to a system resource. While the primary I/O adapter is in service and the redundant I/O adapter is not in service in providing access to the system resource, a fail over command is issued to remove the primary I/O adapter from service and place the redundant I/O adapter in service in supporting access to the system resource. While the redundant I/O adapter is in service and the primary I/O adapter is not in service in providing access to the system resource, diagnostic testing on the primary I/O adapter is performed. In response to the diagnostic testing revealing no fault in the primary I/O adapter, a fail back command is issued to restore the primary I/O adapter to service and to remove the redundant I/O adapter from service.
摘要翻译： 分配数据处理系统的主I / O适配器和冗余I / O适配器以支持对系统资源的访问。 当初级I / O适配器处于使用状态并且冗余I / O适配器未提供对系统资源的访问时，将发出故障切换命令以从服务中删除主I / O适配器并将冗余I / / O适配器在服务中支持对系统资源的访问。 当冗余I / O适配器处于使用状态并且主I / O适配器未提供对系统资源的访问时，将执行主I / O适配器的诊断测试。 响应诊断测试显示主I / O适配器无故障，将发出故障恢复命令以恢复主要I / O适配器的服务，并从服务中删除冗余I / O适配器。
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公开(公告)号：US07743129B2
公开(公告)日：2010-06-22
申请号：US11380993
申请日：2006-05-01
申请人： Binh K. Hua , Sivarama K. Kodukula
发明人： Binh K. Hua , Sivarama K. Kodukula
IPC分类号： G06F15/173
CPC分类号： H04L45/00 , H04L45/245 , H04L45/28 , Y02D50/30
摘要： Methods and arrangements to monitor communication components such as a network adapters for activity, and identify components that have lower than normal levels of activity are provided. An identified communication component can become suspect component and a candidate for further testing, including different forms of interrogation. Process for interrogating candidates can include generating and sending test packets having the media access control (MAC) address of the candidate to the candidate and if activity is not detected subsequent to the interrogation, the candidate can be flagged as a failed component. Correspondingly, the component can be deactivated and removed from service. In a further embodiment, a backup component can be activated and assume the role previously held by the failed component.
摘要翻译： 提供了监视诸如用于活动的网络适配器的通信组件以及识别具有低于正常活动水平的组件的方法和安排。 识别的通信组件可以成为可疑组件和进一步测试的候选者，包括不同形式的询问。 用于询问候选的过程可以包括生成并发送具有候选者的媒体访问控制（MAC）地址的测试分组给候选者，并且如果在询问之后没有检测到活动，则可以将候选者标记为失败的分量。 相应地，组件可以被禁用并从服务中移除。 在另一实施例中，可以激活备份组件并承担先前由故障组件保持的角色。
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7.发明申请Method and Apparatus for Managing Flow Control in a Data Processing System 失效用于管理数据处理系统中的流量控制的方法和装置公开(公告)号：US20090141627A1
公开(公告)日：2009-06-04
申请号：US12371793
申请日：2009-02-16
IPC分类号： H04L12/26
摘要： A method in a data processing system for managing transmission of pause frames. In response to detecting an overflow condition during a receipt of data from a network, enabling flow control in response to detecting the overflow condition. The flow control is enabled as long as the overflow condition is present. A determination is made as to whether the operating system unavailable after a period of time passes. If the operating system believed to have crashed and flow control is enabled, the flow control is disabled.
摘要翻译： 一种用于管理暂停帧的传输的数据处理系统中的方法。 响应于在从网络接收数据期间检测到溢出情况，响应于检测到溢出状况而启用流量控制。 只要存在溢出条件，就启用流量控制。 在经过一段时间后，确定操作系统是否不可用。 如果操作系统相信已经崩溃并启用了流量控制，则流量控制将被禁用。
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8.发明授权Method, system, and computer program product for dynamically selecting software buffers for aggregation according to current system characteristics 失效方法，系统和计算机程序产品，用于根据当前系统特性动态选择软件缓冲区进行聚合公开(公告)号：US07490180B2
公开(公告)日：2009-02-10
申请号：US11972776
申请日：2008-01-11
CPC分类号： G06F9/5016 , G06F2209/5011
摘要： A method, system, and computer program product in a data processing system are disclosed for dynamically selecting software butters for aggregation in order to optimize system performance. Data to be transferred to a device is received. The data is stored in a chain of software buffers. Current characteristics of the system are determined. Software buffers to be combined are then dynamically selected. This selection is made according to the characteristics of the system in order to maximize performance of the system.
摘要翻译： 公开了一种数据处理系统中的方法，系统和计算机程序产品，用于动态选择用于聚合的软件，以优化系统性能。 接收要传输到设备的数据。 数据存储在软件缓冲区链中。 确定系统的当前特性。 然后动态选择要组合的软件缓冲区。 该选择是根据系统的特性进行的，以便最大限度地提高系统性能。
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9.发明授权Method for dynamically selecting software buffers for aggregation according to current system characteristics 失效根据当前系统特性动态选择软件缓冲区进行聚合的方法公开(公告)号：US07457893B2
公开(公告)日：2008-11-25
申请号：US10798934
申请日：2004-03-11
CPC分类号： G06F9/5016 , G06F2209/5011
摘要： A method is disclosed for dynamically selecting software buffers for aggregation in order to optimize system performance. Data to be transferred to a device is received. The data is stored in a chain of software buffers. Current characteristics of the system are determined. Software buffers to be combined are then dynamically selected. This selection is made according to the characteristics of the system in order to maximize performance of the system.
摘要翻译： 公开了一种用于动态选择用于聚合的软件缓冲器以便优化系统性能的方法。 接收要传输到设备的数据。 数据存储在软件缓冲区链中。 确定系统的当前特性。 然后动态选择要组合的软件缓冲区。 该选择是根据系统的特性进行的，以便最大限度地提高系统性能。
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10.发明授权Method, system, and computer program product for avoiding data loss during network port recovery processes 失效方法，系统和计算机程序产品，用于避免网络端口恢复过程中的数据丢失公开(公告)号：US07359315B2
公开(公告)日：2008-04-15
申请号：US10798938
申请日：2004-03-11
申请人： Binh K. Hua , Hong Lam Hua , Sivarama K. Kodukula
发明人： Binh K. Hua , Hong Lam Hua , Sivarama K. Kodukula
IPC分类号： H04J1/16
CPC分类号： H04L47/266 , H04L41/0672 , H04L47/18
摘要： A method, system, and computer program product are disclosed in a data processing system for avoiding data loss during network port recovery. A first network port is linked to a second network port via a network. The second network port transmits data to the first network port via the network. A determination is made that the first network port needs to be reinitialized. Prior to the first network port executing a re-initialization process, the first network port notifies the second network port to pause its data transmissions to the first network port.
摘要翻译： 在数据处理系统中公开了一种方法，系统和计算机程序产品，用于避免网络端口恢复期间的数据丢失。 第一个网络端口通过网络链接到第二个网络端口。 第二个网络端口通过网络向第一个网络端口发送数据。 确定第一个网络端口需要重新初始化。 在第一网络端口执行重新初始化过程之前，第一网络端口通知第二网络端口将其数据传输暂停到第一网络端口。
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