Mellanox Technologies, Ltd.

Gal Yefet

Avi Urman

Ariel Shahar

Roee Moyal

Lior Narkis

Yamin Friedman

Dotan David Levi

Idan Burstein

Gil Bloch

Daniel Marcovitch

Boris Pismenny

Noam Bloch

Liran Liss

Ilan Pardo

Hillel Chapman

Or Gerlitz

Liron Mula

Paraskevas Bakopoulos

Ariel Almog

Yossef Itigin

Ran Avraham Koren

Elena Agostini

Yorai Itzhak Zack

Khalid Manaa

Saar Tarnopolsky

Ben Ben Ishay

Daniil Provotorov

Natan Oppenheimer

Tomer Bar-On

An apparatus for cache management includes an interface and a processor. The interface is for communicating with a cache memory configured to store data items. The cache controller is configured to obtain a classification of the data items into a plurality of groups, to obtain respective target capacities for at least some of the groups, each target capacity defining a respective required size of a portion of the cache memory that is permitted to be occupied by the data items belonging to the group, and to cache new data items in the cache memory, or evict cached data items from the cache memory, in accordance with a policy that complies with the target capacities specified for the groups.

Cache management using groups partitioning

A network adapter includes a network interface, a host interface and processing circuitry. The network interface connects to a communication network for communicating with remote targets. The host interface connects to a host that accesses a Multi-Channel Send Queue (MCSQ) storing Work Requests (WRs) originating from client processes running on the host. The processing circuitry is configured to retrieve WRs from the MCSQ and distribute the WRs among multiple Send Queues (SQs) accessible by the processing circuitry, and retrieve WRs from the multiple NSQs and execute data transmission operations specified in the WRs retrieved from the multiple NSQs.

Multi-channel connection management in a network adapter

A method and system are provided for limiting unnecessary data traffic on the data busses connecting the various levels of system memory. Some embodiments may include processing an invalidation command associated with a system or network operation requiring temporary storage of data in a local memory area. The invalidation command may comprise a memory location indicator capable of identifying the physical addresses of the associated data in the local memory area. Some embodiments may preclude the data associated with the system or network operation from being written to a main memory by invalidating the memory locations holding the temporary data once the system or network operation has finished utilizing the local memory area.

Methods and systems for limiting data traffic while processing computer system operations

In one embodiment, a system includes a memory to store a work queue including work queue entry slots, a processing device to write work queue entries to the work queue in a consecutive and cyclic manner, and a network device including a network interface to share packet over a network, and packet processing circuitry to read the work queue entries from the work queue in a consecutive and cyclic manner, the work queue entries indicating work to be performed associated with the packets, dequeue respective ones of the work queue entries read from the work queue responsively to reading the respective work queue entries from the work queue, add the work queue entries to an execution database used to track execution of the work queue entries, and execute the work queue entries in the execution database.

Efficient network device work queue

A network node includes a network adapter and a host. The network adapter is coupled to a communication network. The host includes a processor running a client process and a communication stack, and is configured to receive packets from the communication network, and classify the received packets into respective flows that are associated with respective chunks in a receive buffer, to distribute payloads of the received packets among the chunks so that payloads of packets classified to a given flow are stored in a given chunk assigned to the given flow, and to notify the communication stack of the payloads in the given chunk, for transferring the payloads in the given chunk to the client process.

Coalescing packets based on hints generated by network adapter

A method and system are provided for limiting unnecessary data traffic on the data communication connections connecting various system components, including the various levels of system memory. Some embodiments may include processing a buffer allotment request and/or a buffer release command in coordination with a system or network operation requiring temporary storage of data in a memory buffer. The buffer allotment request may be capable of indicating the amount of storage space required on the memory buffer to execute the system or network operation. The system may be capable of precluding the system or network operation from executing until there is sufficient space in the memory buffer to complete the operation without evicting operational data from the memory buffer. In some embodiments, the buffer release command may signal completion of the system or network operation and release of the utilized memory buffer space for other operations.

Methods and systems for managing memory buffer usage while processing computer system operations

In one embodiments, data communication system include a communication apparatus, which is configured to receive data from different user equipment devices a schedule of time periods, and packetize the data from respective ones of the user equipment devices for respective ones of the time periods into packets, a memory including a plurality of buffers, and a network interface controller configured to receive the packets from the communication apparatus, and scatter respective portions of the data belonging to respective groups of successive ones of the time periods to the buffers, responsively to a static set of steering rules, and timing information of respective ones of the packets, and wherein each respective portion of the data is scattered to the buffers a same scatter pattern.

Efficient scattering to buffers

A method for communication includes mapping transport sequence numbers in headers of data packets received from a network to respective buffers in a memory of a host computer. At least a part of the data from payloads of the received data packets is written directly to the respective buffers.

Direct data placement

A network device includes a network interface, a host interface, and processing circuitry. The network interface is configured to connect to a communication network. The host interface is configured to connect to a host comprising a host processor running a client process. The processing circuitry is configured to receive packets belonging to a message having a message length, the message originating from a peer process, to identify, in at least some of the received packets, application-level information specifying the message length, to determine, based on the identified message length, that the packets of the message already received comprise only a portion of the message, and in response to determining that the client process benefits from receiving less than the entire message, to initiate reporting the packets of the message already received to the client process.

Controlling packet delivery based on application level information

A peripheral device coupled to a host includes a network interface, a packet processor, and a Data Processing Unit (DPU). The packet processor receives from a communication network, via the network interface, packets that originated from a source in an original order and received at the peripheral device in as order different from the original order. The packet processor splits the received packets into headers and payloads, sends the payloads for storage in a host memory and sends the headers without the payloads for storage in a DPU memory, and based on the headers produces a hint indicative of processing to be applied to the headers, by the DPU, for identifying the original order. Based on the hint, the DPU identifies the original order of the packets by applying the processing indicated by the hint to respective headers in the DPU memory, and notifies the host of the original order.

Efficient packet reordering using hints

A network device includes a network interface, a host interface and processing circuitry. The network interface is configured to connect to a communication network. The host interface is configured to connect to a host including a host processor running a client process. The processing circuitry is configured to receive packets originating from a peer process, to identify, in at least some of the received packets, application level information that is exchanged between the client process and the peer process, and to initiate reporting of one or more of the received packets to the client process, based on the application level information.

A network element one or more network ports, network time circuitry and packet processing circuitry. The network ports are configured to communicate with a communication network. The network time circuitry is configured to track a network time defined in the communication network. In some embodiments the packet processing circuitry is configured to receive a definition of one or more timeslots that are synchronized to the network time, and to send outbound packets to the communication network depending on the timeslots. In some embodiments the packet processing circuitry is configured to process inbound packets, which are received from the communication network, depending on the timeslots.

TDMA networking using commodity NIC/switch

A network adapter includes a network interface, a host interface and processing circuitry. The network interface connects to a communication network for communicating with remote targets. The host interface connects to a host that accesses a Multi-Channel Send Queue (MCSQ) storing Work Requests (WRs) originating from client processes running on the host. The processing circuitry is configured to retrieve WRs from the MCSQ and distribute the WRs among multiple Send Queues (SQs) accessible by the processing circuitry.

Growing community of inventors

Haifa, Israel

Gal Yefet