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1. 发明授权

US09705807B2 Distributed counters and meters in packet-switched system 有权
公开(公告)号：US09705807B2
公开(公告)日：2017-07-11
申请号：US14638753
申请日：2015-03-04
申请人： MARVELL ISRAEL (M.I.S.L) LTD.
发明人： Amir Roitshtein , Carmi Arad , Gil Levy , Rami Zemach
IPC分类号： G06F15/16 , H04L12/851 , H04L12/815 , H04L12/24 , H04L12/26
CPC分类号： H04L47/2483 , H04L41/082 , H04L43/02 , H04L43/0894 , H04L47/22
摘要： Aspects of the disclosure provide a method for counting packets and bytes in a distributed packet-switched system. The method includes receiving a packet stream having at least one packet flow at a device of a packet-switched system having a plurality of distributed devices, statistically determining whether to update a designated device based on receipt of a packet belonging to the packet flow, and transmitting packet counting information to the designated device based on the statistical determination, where the designated device counts packets of the packet flow based on the packet counting information.

2. 发明授权

US09619584B1 Parallel multi-lookup TCAM 有权
公开(公告)号：US09619584B1
公开(公告)日：2017-04-11
申请号：US14450843
申请日：2014-08-04
申请人： MARVELL ISRAEL (M.I.S.L) LTD.
发明人： Amir Roitshtein , Gil Levy , Lior Valency
IPC分类号： G06F17/30 , G11C15/00
CPC分类号： G06F17/30982 , G11C15/00
摘要： Aspects of the disclosure provide a circuit that includes a content addressable memory (CAM) array, a first mask circuit and a first encoder. The CAM array has CAM entry lines to be compared with a search key. The CAM array is configured to output a match result indicative entry lines that match the search key. The first mask circuit is configured to selectively mask first one or more portions of the match result to generate a first masked match result indicative first entry lines among the entry lines that match the search key. The first encoder is configured to encode the first masked match result to identify a matching entry line in the first entry lines as a first search result.

3. 发明授权

US09503435B2 Load balancing hash computation for network switches 有权
标题翻译：网络交换机的负载平衡哈希计算
公开(公告)号：US09503435B2
公开(公告)日：2016-11-22
申请号：US14178974
申请日：2014-02-12
申请人： Marvell Israel (M.I.S.L) Ltd.
发明人： Amir Roitshtein , Tal Mizrahi
IPC分类号： H04L29/06 , H04L9/08 , H04L12/803 , H04L12/931 , H04L12/911 , H04L9/06 , H04L12/801 , H04L12/891
CPC分类号： H04L63/061 , H04L9/0643 , H04L9/0816 , H04L9/0819 , H04L47/125 , H04L47/193 , H04L47/41 , H04L47/70 , H04L49/50
摘要： Techniques to load balance traffic in a network device or switch include a network device or switch having a first interface to receive a data unit or packet, a second interface to transmit the packet, and a mapper to map between virtual ports and physical ports. The network device includes hash value generator configured to generate a hash value based on information included in the packet and based on at least one virtual port. The hash value may be optionally modified to load balance egress traffic of the network device. The network device selects a particular virtual port for egress of the packet, such as by determining an index into an egress table based on the (modified) hash value. The packet is transmitted from the network device using a physical port mapped to the particular virtual port.
摘要翻译：负载平衡网络设备或交换机中的流量的技术包括具有接收数据单元或分组的第一接口的网络设备或交换机，用于传送分组的第二接口和映射器以在虚拟端口和物理端口之间映射。网络设备包括哈希值生成器，其被配置为基于包中包含的信息并基于至少一个虚拟端口生成哈希值。可以可选地修改哈希值以对网络设备的负载平衡出口业务量。网络设备例如通过基于（修改的）散列值确定到出口表的索引，来选择用于分组出口的特定虚拟端口。使用映射到特定虚拟端口的物理端口从网络设备发送分组。

4. 发明授权

US09455967B2 Load balancing hash computation for network switches 有权
标题翻译：网络交换机的负载平衡哈希计算
公开(公告)号：US09455967B2
公开(公告)日：2016-09-27
申请号：US14305828
申请日：2014-06-16
申请人： Marvell Israel (M.I.S.L) Ltd.
发明人： Amir Roitshtein , Tal Mizrahi
IPC分类号： H04L29/06 , G06F15/173 , H04L9/32 , H04L9/08 , H04L12/803 , H04L12/931 , H04L12/911 , H04L9/06 , H04L12/801 , H04L12/891
CPC分类号： H04L63/061 , H04L9/0643 , H04L9/0816 , H04L9/0819 , H04L47/125 , H04L47/193 , H04L47/41 , H04L47/70 , H04L49/50
摘要： Techniques to avoid polarization in a communication network include a network switch or device having a first interface to receive a data unit or packet, and a second interface via which the packet is transmitted from the network device. The network device includes a hash value generator configured to generate, using a depolarizer, a depolarized key from an initial key (where the initial key is based on contents of the packet and the depolarizer is unique to the network device), and to generate a hash value based on the depolarized key and the packet by using a hash function that is common to all network devices in the network. The hash value may be optionally modified to load balance egress traffic of the network device. The network device selects an egress link or port, such as by determining an index into an egress table based on the (modified) hash value.
摘要翻译：在通信网络中避免极化的技术包括具有用于接收数据单元或分组的第一接口的网络交换机或设备，以及从网络设备发送分组的第二接口。网络设备包括哈希值生成器，其被配置为使用去偏振器从初始密钥（其中初始密钥基于分组的内容并且去偏振器对于网络设备是唯一的）来产生去偏振的密钥，并且生成通过使用网络中所有网络设备共有的散列函数，基于去极化密钥和数据包的哈希值。可以可选地修改哈希值以对网络设备的负载平衡出口业务量。网络设备例如通过基于（修改）散列值确定到出口表的索引来选择出口链路或端口。

5. 发明授权

US09455966B2 Load balancing hash computation for network switches 有权
标题翻译：网络交换机的负载平衡哈希计算
公开(公告)号：US09455966B2
公开(公告)日：2016-09-27
申请号：US14139428
申请日：2013-12-23
申请人： Marvell Israel (M.I.S.L.) Ltd.
发明人： Amir Roitshtein , Tal Mizrahi
IPC分类号： H04L12/26 , H04L29/06 , H04L9/08 , H04L12/803 , H04L12/931 , H04L12/911 , H04L9/06 , H04L12/801 , H04L12/891
CPC分类号： H04L63/061 , H04L9/0643 , H04L9/0816 , H04L9/0819 , H04L47/125 , H04L47/193 , H04L47/41 , H04L47/70 , H04L49/50
摘要： A data unit is received at a network device associated with a link aggregate group. An initial key is determined based on information included in the data unit. Another key is generated based on a first field of the initial key and a second field of the initial key. A hash function is applied to the other key to generate a hash value. A communication link in the link aggregate group is determined based on the hash value, and the data unit is transmitted over the communication link.
摘要翻译：在与链路聚合组相关联的网络设备处接收数据单元。基于包括在数据单元中的信息来确定初始密钥。基于初始密钥的第一个字段和初始密钥的第二个字段生成另一个密钥。散列函数应用于另一个键以生成哈希值。基于散列值确定链路聚合组中的通信链路，并且通过通信链路发送数据单元。

6. 发明申请

US20140115167A1 Load Balancing Hash Computation for Networks 审中-公开
标题翻译：网络负载平衡哈希计算
公开(公告)号：US20140115167A1
公开(公告)日：2014-04-24
申请号：US14139428
申请日：2013-12-23
申请人： Marvell Israel (M.I.S.L) Ltd.
发明人： Amir Roitshtein , Tal Mizrahi
IPC分类号： H04L12/911
CPC分类号： H04L63/061 , H04L9/0643 , H04L9/0816 , H04L9/0819 , H04L47/125 , H04L47/193 , H04L47/41 , H04L47/70 , H04L49/50
摘要： A data unit is received at a network device associated with a link aggregate group. An initial key is determined based on information included in the data unit. Another key is generated based on a first field of the initial key and a second field of the initial key. A hash function is applied to the other key to generate a hash value. A communication link in the link aggregate group is determined based on the hash value, and the data unit is transmitted over the communication link.
摘要翻译：在与链路聚合组相关联的网络设备处接收数据单元。基于包括在数据单元中的信息来确定初始密钥。基于初始密钥的第一个字段和初始密钥的第二个字段生成另一个密钥。散列函数应用于另一个键以生成哈希值。基于散列值确定链路聚合组中的通信链路，并且通过通信链路发送数据单元。

7. 发明授权

US09553820B2 Maintaining packet order in a parallel processing network device 有权
标题翻译：在并行处理网络设备中维护分组顺序
公开(公告)号：US09553820B2
公开(公告)日：2017-01-24
申请号：US14209513
申请日：2014-03-13
申请人： Marvell Israel (M.I.S.L) Ltd.
发明人： Evgeny Shumsky , Gil Levy , Adar Peery , Amir Roitshtein
IPC分类号： H04L12/28 , H04L12/863 , H04L12/861 , H04L12/939 , H04L12/883
CPC分类号： H04L47/6295 , H04L47/6215 , H04L49/552 , H04L49/9015 , H04L49/9057
摘要： A plurality of packets that belong to a data flow are received and are distributed to two or more packet processing elements, wherein a packet is sent to a first packet processing element. A first instance of the packet is queued at a first packet processing element according to an order of the packet within the data flow. The first instance of the packet is caused to be transmitted when processing of the first instance is completed and the first instance of the packet is at a head of a queue at the first ordering unit. A second instance of the packet is queued at a second ordering unit. The second instance of the packet is caused to be transmitted when processing of the second instance is completed and the second instance of the packet is at a head of a queue at the second ordering unit.
摘要翻译：接收属于数据流的多个分组，并将其分配给两个或多个分组处理单元，其中分组被发送到第一分组处理单元。分组的第一实例根据数据流内的分组的顺序排队在第一分组处理单元处。当第一实例的处理完成并且分组的第一实例位于第一订购单元处的队列的头部时，使分组的第一实例被发送。分组的第二实例在第二排序单元处排队。当第二实例的处理完成并且分组的第二实例处于第二排序单元处的队列的头部时，使分组的第二实例被发送。

8. 发明申请

US20140325228A1 LOAD BALANCING HASH COMPUTATION FOR NETWORK SWITCHES 审中-公开
标题翻译：负载均衡HASH计算网络切换
公开(公告)号：US20140325228A1
公开(公告)日：2014-10-30
申请号：US14305828
申请日：2014-06-16
申请人： Marvell Israel (M.I.S.L.) Ltd.
发明人： Amir Roitshtein , Tal Mizrahi
IPC分类号： H04L29/06
CPC分类号： H04L63/061 , H04L9/0643 , H04L9/0816 , H04L9/0819 , H04L47/125 , H04L47/193 , H04L47/41 , H04L47/70 , H04L49/50
摘要： Techniques to avoid polarization in a communication network include a network switch or device having a first interface to receive a data unit or packet, and a second interface via which the packet is transmitted from the network device. The network device includes a hash value generator configured to generate, using a depolarizer, a depolarized key from an initial key (where the initial key is based on contents of the packet and the depolarizer is unique to the network device), and to generate a hash value based on the depolarized key and the packet by using a hash function that is common to all network devices in the network. The hash value may be optionally modified to load balance egress traffic of the network device. The network device selects an egress link or port, such as by determining an index into an egress table based on the (modified) hash value.
摘要翻译：在通信网络中避免极化的技术包括具有用于接收数据单元或分组的第一接口的网络交换机或设备，以及从网络设备发送分组的第二接口。网络设备包括哈希值生成器，其被配置为使用去偏振器从初始密钥（其中初始密钥基于分组的内容并且去偏振器对于网络设备是唯一的）来产生去偏振的密钥，并且生成通过使用网络中所有网络设备共有的散列函数，基于去极化密钥和数据包的哈希值。可以可选地修改哈希值以对网络设备的负载平衡出口业务量。网络设备例如通过基于（修改）散列值确定到出口表的索引来选择出口链路或端口。

9. 发明授权

US09813336B2 Device and method for increasing packet processing rate in a network device 有权
公开(公告)号：US09813336B2
公开(公告)日：2017-11-07
申请号：US14574214
申请日：2014-12-17
申请人： Marvell Israel (M.I.S.L) Ltd.
发明人： Gil Levy , Amir Roitshtein , Rami Zemach
IPC分类号： H04J3/24 , H04L12/28 , H04L12/741 , H04L29/06 , H04L12/947 , H04L12/931 , H04L12/935 , H04L12/801
CPC分类号： H04L45/74 , H04L47/10 , H04L49/251 , H04L49/3009 , H04L49/70 , H04L69/22
摘要： A first set of bits is extracted from a header of a first packet. A second set of bits is extracted from a header of a second packet. The first set of bits and the second set of bits are combined into a combined single data unit representing the first packet and the second packet. The combined single data unit is transferred to a packet processing device. The packet processing device decomposes the single data unit to extract the first set of bits corresponding to the first packet and the second set of bits corresponding to the second packet. A first reduced set of processing operations is performed to process the first packet using the first set of bits corresponding to the first packet. A second reduced set of processing operations is performed to process the second packet using the second set of bits corresponding to the second packet.

10. 发明授权

US09807027B2 Maintaining packet order in a multi processor network device 有权
公开(公告)号：US09807027B2
公开(公告)日：2017-10-31
申请号：US15056646
申请日：2016-02-29
申请人： Marvell Israel (M.I.S.L) Ltd.
发明人： Evgeny Shumsky , Gil Levy , Adar Peery , Amir Roitshtein , Aron Wohlgemuth
IPC分类号： H04L12/863 , H04L12/939
CPC分类号： H04L47/624 , H04L47/50 , H04L47/625 , H04L49/552
摘要： A plurality of packets are received by a packet processing device, and the packets are distributed among two or more packet processing node elements for processing of the packets. The packets are assigned to respective packet classes, each class corresponding to a group of packets for which an order in which the packets were received is to be preserved. The packets are queued in respective queues corresponding to the assigned packet classes and according to an order in which the packets were received by the packet processing device. The packet processing node elements issue respective instructions indicative of processing actions to be performed with respect to the packets, and indications of at least some of the processing actions are stored. A processing action with respect to a packet is performed when the packet has reached a head of a queue corresponding to the class associated with the packet.

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