Marvellworld Trade Ltd.

Marvell International Limited

Michael Shamis

Youval Nachum

Tal Anker

Roman Ronin

In an apparatus for receiving and forwarding data packets on a network, a network device includes a plurality of ports for coupling to the network and for transmitting packets to devices disposed in or coupled to the network. At least one processor configured to process packets received via the network processes packets by selectively forwarding processed packets to one or more of the ports. A plurality of queues are defined in a memory, each configured to store packets to be transmitted by ports in the plurality of ports. A queue manager is configured to selectively assign a subset of the plurality of queues to a subset of the plurality of ports.

Flexible queues in a network switch

Aspects of the disclosure provide an apparatus that includes a key generator, a first memory, a second memory, and a controller. The key generator is configured to generate a first search key, and one or more second search keys in response to a pattern. The first memory is configured to compare the first search key to a plurality of entries populated in the first memory, and determine an index of a matching entry to the first search key. The second memory is configured to respectively retrieve one or more exact match indexes of the one or more second search keys from one or more exact match pattern groups populated in the second memory. The controller is configured to select a search result for the pattern from among the index output from the first memory and the one or more exact match indexes output from the second memory.

Method and apparatus for pattern matching

A network device includes a packet ingress configured to receive packets from a network, and a packet processor configured to identify a first packet of the received packets as a double VLAN tagged packet with an extended priority profile. The packet processor is also configured to determine, based on P bits distributed among M bits of a first priority field associated with a first VLAN tag and N bits of a second priority field associated with a second VLAN tag, the extended priority profile of the first packet from among a group of possible extended priority profiles that is larger than a first group of possible priority profiles associated with the first priority field and larger than a second group of possible priority profiles associated with the second priority field. The packet processor is also configured to process the first packet according to the determined extended priority profile.

Extended priority for Ethernet packets

A network device includes a packet ingress configured to receive packets from a network, and a packet processor. The packet processor is configured to identify a first packet of the received packets as a double VLAN tagged packet including a first priority field associated with a first VLAN tag and a second priority field associated with a second VLAN tag. The packet processor is also configured to assign an extended priority profile to the first packet based on one or more bits of the first priority field and one or more bits of the second priority field, the extended priority profile being among a group of possible extended priority profiles that is larger than any group of possible priority profiles associated with a single VLAN tag of the first packet. The packet processor is further configured to process the first packet according to the assigned extended priority profile.

Extended priority for ethernet packets

A network apparatus comprises a plurality of ports, and a forwarding engine coupled to the plurality of ports. The forwarding engine is configured to transfer data units received via at least some of the plurality of ports to one or more appropriate ports in the plurality of ports. The forwarding engine comprises a content addressable memory (CAM) device to store a plurality of data patterns organized in a plurality of groups, wherein the CAM device is configured to, responsive to input data, output in a single cycle a plurality of match indications corresponding to the plurality of groups. The forwarding engine also comprises a logic device coupled to the CAM device and configured to generate an action value based on the plurality of match indications, wherein the action value indicates an action to be taken by the forwarding engine.

Growing community of inventors

Netanya, Israel

Michael Shamis