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1. 发明授权

US08954409B1 Acquisition of multiple synchronization objects within a computing device 有权
标题翻译：在计算设备内获取多个同步对象
公开(公告)号：US08954409B1
公开(公告)日：2015-02-10
申请号：US13240259
申请日：2011-09-22
申请人： Oren Kerem , Jeffrey G. Libby , Deepak Goel , David J. Ofelt , Anurag P. Gupta
发明人： Oren Kerem , Jeffrey G. Libby , Deepak Goel , David J. Ofelt , Anurag P. Gupta
IPC分类号： G06F17/00
CPC分类号： G06F17/30949 , G06F17/30348
摘要： In general, techniques of the present disclosure relate to synchronizing concurrent access to multiple portions of a data structure. In one example, a method includes, sequentially selecting a plurality of requests from a request queue, wherein at least one of the requests specifies a plurality of requested synchronization objects for corresponding candidate portions of a data structure to which to apply an operation associated with a data element. The method also includes querying one or more sets of identifiers to determine whether one or more of the requested synchronizations objects specified by the selected request are acquirable. The method also includes acquiring each of the requested synchronization objects that are acquirable. The method includes, responsive to acquiring all of the one or more requested synchronization objects, selecting a subset of the candidate portions of the data structure and applying the operation only to the selected subset of the candidate portions.
摘要翻译：通常，本公开的技术涉及同步访问数据结构的多个部分。在一个示例中，一种方法包括：从请求队列顺序地选择多个请求，其中至少一个请求为数据结构的相应候选部分指定多个请求的同步对象，以应用与数据元素。该方法还包括查询一个或多个标识符集合以确定由所选择的请求指定的所请求的同步对象中的一个或多个是可获取的。该方法还包括获取可获取的所请求的同步对象中的每一个。该方法包括：响应于获取所有一个或多个所请求的同步对象，选择数据结构的候选部分的子集，并将该操作仅应用于所选择的候选部分的子集。

2. 发明授权

US08040901B1 Packet queueing within ring networks 有权
标题翻译：环网内的数据包排队
公开(公告)号：US08040901B1
公开(公告)日：2011-10-18
申请号：US12360609
申请日：2009-01-27
申请人： Kireeti Kompella , Pradeep Sindhu , Jean-Marc Frailong , David J. Ofelt
发明人： Kireeti Kompella , Pradeep Sindhu , Jean-Marc Frailong , David J. Ofelt
IPC分类号： H04L12/28
CPC分类号： H04L12/5693 , H04L12/437 , H04L47/10 , H04L47/50
摘要： In general, techniques are described for packet queuing within ring networks. In accordance with the techniques, a network device of a ring network comprises a memory having a different queue for each order-dependent pair of the network devices. Each pair represents a different order-dependent combination of the network devices that includes an ingress network device that provides an ingress to the ring network and an egress network device that provides an egress from the ring network. The network device further comprises an interface for receiving a packet from a neighboring one of the plurality of network devices and a control unit that, in response to receiving the packet, stores the packet to one of the queues based on which network devices is the ingress and which network device is the egress for the packet. The control unit forwards the stored packet via the ring network according to a scheduling algorithm.
摘要翻译：一般来说，技术描述为环形网络内的数据包排队。根据这些技术，环形网络的网络设备包括具有针对网络设备的每个顺序依赖对的不同队列的存储器。每对代表网络设备的不同顺序组合，其包括向环网提供入口的入口网络设备和从环网提供出口的出口网络设备。所述网络设备还包括用于从所述多个网络设备中的相邻的一个网络设备接收分组的接口和响应于接收到所述分组而将所述分组存储到所述队列中的一个基于哪个网络设备是所述入口的控制单元哪个网络设备是分组的出口。控制单元根据调度算法经由环网转发存储的分组。

3. 发明申请

US20100158031A1 METHODS AND APPARATUS FOR TRANSMISSION OF GROUPS OF CELLS VIA A SWITCH FABRIC 有权
标题翻译：用于通过开关织物传输细胞群的方法和装置
公开(公告)号：US20100158031A1
公开(公告)日：2010-06-24
申请号：US12343728
申请日：2008-12-24
申请人： Sarin Thomas , Srihari Vegesna , Pradeep Sindhu , Chi-Chung Kenny Chen , Jean-Marc Frailong , David J. Ofelt , Philip A. Thomas , Chang-Hong Wu
发明人： Sarin Thomas , Srihari Vegesna , Pradeep Sindhu , Chi-Chung Kenny Chen , Jean-Marc Frailong , David J. Ofelt , Philip A. Thomas , Chang-Hong Wu
IPC分类号： H04L12/56
CPC分类号： H04J3/00 , H04L49/251 , H04L49/254
摘要： In one embodiment, a method can include receiving at an egress schedule module a request to schedule transmission of a group of cells from an ingress queue through a switch fabric of a multi-stage switch. The ingress queue can be associated with an ingress stage of the multi-stage switch. The egress schedule module can be associated with an egress stage of the multi-stage switch. The method can also include determining, in response to the request, that an egress port at the egress stage of the multi-stage switch is available to transmit the group of cells from the multi-stage switch.
摘要翻译：在一个实施例中，一种方法可以包括在出口调度模块处接收通过多级交换机的交换结构调度来自进入队列的小区的传输的请求。入站队列可以与多级交换机的进入级相关联。出口调度模块可以与多级交换机的出口级相关联。该方法还可以包括响应于该请求确定多级交换机的出口级的出口端口可用于从多级交换机发送小区组。

4. 发明申请

US20110194409A1 OVERSUBSCRIBED PACKET STREAM-BASED INTERCONNECT PROTOCOL 有权
标题翻译：基于分组流的基于互连的互连协议
公开(公告)号：US20110194409A1
公开(公告)日：2011-08-11
申请号：US12700850
申请日：2010-02-05
申请人： David J. OFELT , Jean-Marc FRAILONG , Wing Leong POON , Aibing ZHOU , Xianzhi LI , Hongsheng PING
发明人： David J. OFELT , Jean-Marc FRAILONG , Wing Leong POON , Aibing ZHOU , Xianzhi LI , Hongsheng PING
IPC分类号： H04L12/56
CPC分类号： H04L49/505
摘要： A network device includes a receiver component that generates flow control information. The network device also includes a transmitter component that receives a packet for forwarding to the receiver component, receives flow control data for the packet from the receiver component, and provides the packet and the flow control data for the packet to a fabric component. The fabric component performs a congestion management operation for the packet, and forwards the packet to the receiver component based on the flow control data and results of the congestion management operation.
摘要翻译：网络设备包括产生流量控制信息的接收器组件。网络设备还包括发送器组件，其接收用于转发到接收器组件的分组，从接收器组件接收分组的流控制数据，并将分组和分组的流控制数据提供给组织组件。组播组件对分组进行拥塞管理操作，并根据流量控制数据和拥塞管理操作的结果将分组转发给接收方组件。

5. 发明授权

US08843805B1 Memory error protection using addressable dynamic ram data locations 有权
标题翻译：使用可寻址的动态RAM数据位置进行内存错误保护
公开(公告)号：US08843805B1
公开(公告)日：2014-09-23
申请号：US13422934
申请日：2012-03-16
申请人： Deepak Goel , Jeffrey G. Libby , Anurag P. Gupta , Abhijit Ghosh , David J. Ofelt
发明人： Deepak Goel , Jeffrey G. Libby , Anurag P. Gupta , Abhijit Ghosh , David J. Ofelt
IPC分类号： G11C29/00 , G11C7/24 , G06F11/10
CPC分类号： G11C7/24 , G06F11/1004 , G06F11/1008 , G06F11/1048 , G11C11/401
摘要： In general, techniques are described for efficiently and transparently partitioning a physical address space of a DRAM part lacking dedicated error protection circuitry to supply addressable error protection bytes for use in detecting and/or correcting bit errors elsewhere present in the physical address space. In one example, a network device includes a DRAM and a memory controller that receives a write command to write data to the DRAM. An address translation module of the memory controller logically partitions the DRAM to define a plurality of physically addressable sections that includes an error protection section for storing error protection bits and one or more data storage sections. The memory controller defines a contiguous logical address space representing the data storage sections. A DRAM controller of the network device communicates with the DRAM to store the data to one of the data storage sections in accordance with the contiguous logical address space.
摘要翻译：通常，描述了技术以有效和透明地划分缺少专用的错误保护电路的DRAM部分的物理地址空间，以提供用于检测和/或校正物理地址空间中存在的位错误的可寻址的错误保护字节。在一个示例中，网络设备包括DRAM和存储器控制器，其接收写入数据到DRAM的写命令。存储器控制器的地址转换模块逻辑地分区DRAM以定义多个物理寻址部分，其包括用于存储错误保护位和一个或多个数据存储部分的错误保护部分。存储器控制器定义表示数据存储部分的连续的逻辑地址空间。网络设备的DRAM控制器与DRAM通信，以根据连续的逻辑地址空间将数据存储到数据存储部分之一。

6. 发明授权

US08605722B1 Deadlock-resistant fabric tree replication in a network device 有权
公开(公告)号：US08605722B1
公开(公告)日：2013-12-10
申请号：US12759850
申请日：2010-04-14
申请人： Pradeep Sindhu , Jean-Marc Frailong , Sarin Thomas , Srihari Vegesna , David J. Ofelt , Chang-Hong Wu
发明人： Pradeep Sindhu , Jean-Marc Frailong , Sarin Thomas , Srihari Vegesna , David J. Ofelt , Chang-Hong Wu
IPC分类号： H04L12/28
CPC分类号： H04L45/16 , H04L12/1863 , H04L49/201 , H04L49/90 , H04L67/1095
摘要： In general, the invention is directed to techniques for reducing deadlocks that may arise when performing fabric replication. For example, as described herein, a network device includes packet replicators that each comprises a plurality of resource partitions. A replication data structure for a packet received by the network device includes packet replicator nodes that are arranged hierarchically to occupy one or more levels of the replication data structure. Each of the resource partitions in each of the plurality of packet replicators is associated with a different level of the replication data structure. The packet replicators replicate the packet according to the replication data structure, and each of the packet replicators handles the packet using the one of the resource partitions of the packet replicator that is associated with the level of the replication data structure occupied by the node that corresponds to that particular packet replicator.

7. 发明授权

US08582440B2 Oversubscribed packet stream-based interconnect protocol 有权
标题翻译：基于分组流的互连协议
公开(公告)号：US08582440B2
公开(公告)日：2013-11-12
申请号：US12700850
申请日：2010-02-05
申请人： David J. Ofelt , Jean-Marc Frailong , Wing Leong Poon , Aibing Zhou , Xianzhi Li , Hongsheng Ping
发明人： David J. Ofelt , Jean-Marc Frailong , Wing Leong Poon , Aibing Zhou , Xianzhi Li , Hongsheng Ping
IPC分类号： H04W28/10
CPC分类号： H04L49/505
摘要： A network device includes a receiver component that generates flow control information. The network device also includes a transmitter component that receives a packet for forwarding to the receiver component, receives flow control data for the packet from the receiver component, and provides the packet and the flow control data for the packet to a fabric component. The fabric component performs a congestion management operation for the packet, and forwards the packet to the receiver component based on the flow control data and results of the congestion management operation.
摘要翻译：网络设备包括产生流量控制信息的接收器组件。网络设备还包括发送器组件，其接收用于转发到接收器组件的分组，从接收器组件接收分组的流控制数据，并将分组和分组的流控制数据提供给组织组件。组播组件对分组进行拥塞管理操作，并根据流量控制数据和拥塞管理操作的结果将分组转发给接收方组件。

8. 发明授权

US08798074B1 Packet queueing within ring networks 有权
标题翻译：环网内的数据包排队
公开(公告)号：US08798074B1
公开(公告)日：2014-08-05
申请号：US13275059
申请日：2011-10-17
申请人： Kireeti Kompella , Pradeep Sindhu , Jean-Marc Frailong , David J. Ofelt
发明人： Kireeti Kompella , Pradeep Sindhu , Jean-Marc Frailong , David J. Ofelt
IPC分类号： H04L12/28 , H04L12/54 , H04L12/56
CPC分类号： H04L12/5693 , H04L12/437 , H04L47/10 , H04L47/50
摘要： In general, techniques are described for packet queuing within ring networks. In accordance with the techniques, a network device of a ring network comprises a memory having a different queue for each order-dependent pair of the network devices. Each pair represents a different order-dependent combination of the network devices that includes an ingress network device that provides an ingress to the ring network and an egress network device that provides an egress from the ring network. The network device further comprises an interface for receiving a packet from a neighboring one of the plurality of network devices and a control unit that, in response to receiving the packet, stores the packet to one of the queues based on which network devices is the ingress and which network device is the egress for the packet. The control unit forwards the stored packet via the ring network according to a scheduling algorithm.
摘要翻译：一般来说，技术描述为环形网络内的数据包排队。根据这些技术，环形网络的网络设备包括具有针对网络设备的每个顺序依赖对的不同队列的存储器。每对代表网络设备的不同顺序组合，其包括向环网提供入口的入口网络设备和从环网提供出口的出口网络设备。所述网络设备还包括用于从所述多个网络设备中的相邻的一个网络设备接收分组的接口和响应于接收到所述分组而将所述分组存储到所述队列中的一个基于哪个网络设备是所述入口的控制单元哪个网络设备是分组的出口。控制单元根据调度算法经由环网转发存储的分组。

9. 发明授权

US08462802B2 Hybrid weighted round robin (WRR) traffic scheduling 有权
标题翻译：混合加权轮询（WRR）流量调度
公开(公告)号：US08462802B2
公开(公告)日：2013-06-11
申请号：US12880403
申请日：2010-09-13
申请人： Aibing Zhou , John Johnson , Chang-Hong Wu , David J. Ofelt
发明人： Aibing Zhou , John Johnson , Chang-Hong Wu , David J. Ofelt
IPC分类号： H04L12/54
CPC分类号： H04L47/522
摘要： A network device receives traffic associated with a network of intermediate network devices and user devices, classifies the received traffic, and allocates the classified traffic to traffic queues. The network device also schedules particular queued traffic, provided in the traffic queues and bound for particular intermediate network devices, using a hybrid weighted round robin (WRR) scheduler where the hybrid WRR scheduler schedules the particular queued traffic according to one of a 1-level WRR schedule, a 1.5 level WRR schedule, or a 2-level WRR schedule. The network device further provides the particular queued traffic to the particular intermediate network devices based on the scheduling of the hybrid WRR scheduler.
摘要翻译：网络设备接收与中间网络设备和用户设备的网络相关联的流量，对接收到的流量进行分类，并将分类流量分配给业务队列。网络设备还使用混合加权轮询（WRR）调度器来调度在业务队列中提供并且被绑定到特定中间网络设备的特定排队的业务，其中混合WRR调度器根据1级的其中一个级别调度特定的排队业务 WRR表，1.5级WRR表，或2级WRR表。网络设备还基于混合WRR调度器的调度进一步向特定的中间网络设备提供特定的排队流量。

10. 发明申请

US20120063313A1 HYBRID WEIGHTED ROUND ROBIN (WRR) TRAFFIC SCHEDULING 有权
标题翻译：混合重量罗宾（WRR）交通调度
公开(公告)号：US20120063313A1
公开(公告)日：2012-03-15
申请号：US12880403
申请日：2010-09-13
申请人： Aibing ZHOU , John JOHNSON , Chang-Hong WU , David J. OFELT
发明人： Aibing ZHOU , John JOHNSON , Chang-Hong WU , David J. OFELT
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L47/522
摘要： A network device receives traffic associated with a network of intermediate network devices and user devices, classifies the received traffic, and allocates the classified traffic to traffic queues. The network device also schedules particular queued traffic, provided in the traffic queues and bound for particular intermediate network devices, using a hybrid weighted round robin (WRR) scheduler where the hybrid WRR scheduler schedules the particular queued traffic according to one of a 1-level WRR schedule, a 1.5 level WRR schedule, or a 2-level WRR schedule. The network device further provides the particular queued traffic to the particular intermediate network devices based on the scheduling of the hybrid WRR scheduler.
摘要翻译：网络设备接收与中间网络设备和用户设备的网络相关联的流量，对接收到的流量进行分类，并将分类流量分配给业务队列。网络设备还使用混合加权轮询（WRR）调度器来调度在业务队列中提供并且被绑定到特定中间网络设备的特定排队的业务，其中混合WRR调度器根据1级的其中一个级别调度特定的排队业务 WRR表，1.5级WRR表，或2级WRR表。网络设备还基于混合WRR调度器的调度进一步向特定的中间网络设备提供特定的排队流量。

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