Marvell International Limited

Marvellworld Trade Ltd.

Marvell Asia Pte., Ltd.

Nxp B.v.

Manfred Kunz

Joachim Schmalz

Xiongzhi Ning

Markus Althoff

Michael Karl

Thomas Ruf

Donald Robert Pannell

Thomas Kniplitsch

Lukas Reinbold

Christian Herber

Markus Fischer

A network switch includes a data bus, a register, an endpoint controller and a direct memory access controller. The endpoint controller is configured to receive a descriptor generated by a device driver of a host system, store the descriptor in the register, and transfer data between a root complex controller of the host system and the data bus. The descriptor identifies an address of a buffer in a memory of the host system. The direct memory access controller is configured to receive the address of the buffer from the endpoint controller or the register and, based on the address and an indication generated by the device driver, independently control transfer of the data between the memory of the host system and a network device connected to the network switch. The direct memory access controller is a receive direct memory access controller or a transmit direct memory access controller.

Network switch with DMA controller for independent direct memory access of host system

A network switch is disclosed. The network switch includes an input port and an output port. The network switch further includes a rule logic and a memory for storing a configurable counter. The rule logic is configured to inspect a packet received via the input port and attempt to find a rule for the packet and if the rule is found, to reset the counter and process the packet according to a preconfigured follow up action associated with the rule and if the rule is not found, to route the packet according to a default rule. The rule logic is configured to identify the packet for a follow up action based at least on a subset of content of the packet including a header and a payload of the packet. The counter may hold a time value or the number of packets from a same source to a same destination, a number of bytes received from the same source to a same destination, or a user configurable parameter to control the rule validity period.

Network switch

Network switch with endpoint and direct memory access controllers for in-vehicle data transfers

A conversion pipeline includes a media input stage, a packetizer, a MAC engine and a PHY interface. The media input stage is configured to receive from a media source a sequence of media frames carrying media content. The packetizer is configured to convert the media frames into a sequence of Ethernet packets by generating headers and appending portions of media frames to corresponding generated headers, including appending a first portion of a first media frame to a first generated header before the first media frame is fully received. The MAC engine is configured to commence outputting a first Ethernet packet as an uninterrupted unit, the first Ethernet packet including the first header and payload bits corresponding to the first portion of the first media frame, before the first media frame is fully received. The PHY interface is configured to transmit the Ethernet packets over a network.

Low-latency pipeline for media-to-ethernet frame packaging

An electronic system includes a slave device, multiple master devices and logic circuitry. The slave device is configured to communicate with a single master device in accordance with a single-master communication protocol. The multiple master devices are respectively configured to communicate with the slave device in accordance with the single-master communication protocol. The logic circuitry, which is disposed respectively in the multiple master devices, is configured to exchange control signals indicative of whether the slave device is available for access, so as to prevent simultaneous access attempts to the slave device by more than one of the master devices.

SPI devices with multi-master capabilities

A wireless device for wireless communication in a wireless area network. The wireless device includes a main radio channel for exchanging data with an access point in the wireless area network, as well as an auxiliary radio channel for scanning for availability of other access points in the wireless area network.

Method and apparatus for scanning of channels simultaneously with exchanging data in a wireless device

A data recognition system for a wireless device that includes a storage module that stores a first hash value and a processing module that generates a second hash value based on an incoming data stream received by the wireless device and detects a change in the incoming data stream based on a comparison between the first hash value with the second hash value.

Efficient change recognition algorithm

Wireless adapter with auxiliary radio channel for advanced channel scanning

In a wireless network having one or more base stations and one or more access points, the base station is switched automatically from a CSMA/CA exchange protocol to an RTS/CTS exchange protocol, in a case where the base station infers the presence of a hidden node. The presence of a hidden node is inferred by scanning frames of wireless network transmissions to and from other base stations and the access point. In a case where there is a discrepancy in the accrued frames, such that frames have been accrued from the access point to a second base station without also accruing frames from the second base station back to the access point, the presence of a hidden node is inferred, and the base station is switched automatically to RTS/CTS exchange mode.

More robust data transfer through detection of hidden nodes

A network device includes a first plurality of ports and a first plurality of communication links. Each port of the first plurality of ports communicates with a corresponding communication link of the first plurality of communication links. An adapter aggregates the first plurality communication links into a second plurality of aggregated links. The adaptor assigns a single media access control address to each aggregated link of the second plurality of aggregated links. A driver selects a first aggregated link of the second plurality of aggregated links as an active link based on a link quality of the first aggregated link. The driver sends and receives data over the first aggregated link using the single media access control address assigned to the first aggregated link. The driver selects a second aggregated link of the second plurality of aggregated links as the active link in response to the link quality of the first aggregated link being less than a link quality of the second aggregated link.

Switch failover for aggregated data communication links

A network device, method and computer program product for communicating data over aggregated links, wherein each of the aggregated links comprises a plurality of data communication links. The network device comprises n ports; and a processor to determine a link quality for each of m of the aggregated links, wherein m&#x2267;2, wherein each of the m aggregated links comprises a preselected plurality p of the n ports, select one of the m aggregated links based on the link quality determined for each of the m aggregated links, and send the data over the selected one of the m aggregated links.

Growing community of inventors

Rastatt, Germany

Manfred Kunz