Marvell Asia Pte., Ltd.

Qlogic Corporation

Amit Radzi

Yoav Galon

Shai Malin

Rafi Shalom

Michael Shteinbok

Noa Stawitzky

Shaham Kenat

A method for storing a packet in an application buffer of a processor node is described. A first out of order (OOO) packet within a stream of packets transmitted from a second network interface controller is received in a sequence represented by respective sequence numbers that are assigned to corresponding packets in the stream. The first OOO packet is received out of order relative to at least a first missing packet of the stream of packets. One of an OOO buffer associated with the first network interface controller or the application buffer associated with the first network interface controller is selected. The OOO buffer is configured to store OOO packets. The first network interface controller is configured to store the stream of packets in sequential order in the application buffer. The first OOO packet is stored in the selected buffer.

Out of order packet buffer selection

A first network device transmits, to a second network device, a first indication indicating that the first network device is willing to transmit data to the second network device using an alignment mode for aligning protocol data units (PDUs) that include data with transport packets that encapsulate the PDUs for transmission of the data to the second network device. The first network device receives, from the second network device, a second indication indicating that the second network device is requesting use of the alignment mode for transmission of data from the first network device to the second network device. In response to transmitting the first indication to the second network device and receiving the second indication from the second network device, the first network device enables the alignment mode for transmission of data from the first network device to the second network device.

Negotiation of alignment mode for out of order placement of data in network devices

A network device receives an out of order transport packet encapsulating a protocol data unit (PDU) associated with a data stream, the PDU having a PDU header that is aligned with a beginning of a payload of the transport packet. The network device locates the PDU header disposed at the beginning of the payload of the transport packet, and verifies, using information in a header digest field of the PDU, validity of the PDU header. In response to verifying validity of the PDU header, the network device identifies, based on memory placement information included in the PDU header, a memory location for placing the data in a set of memory locations, in a memory, for storing data associated with the data stream. The network device then stores the first data beginning at the identified first memory location in the set of memory locations in the memory.

Out of order placement of data in network devices

Methods and systems for network communication are provided. One of the methods includes receiving an out of order packet at a requestor device that is communicably connected to a responder device; storing the out of order packet at an out of order buffer location; and sending a lossy reliable connection (LRC) packet to the responder device when selective acknowledgement (SACK) is supported between the requestor device and the responder device, with information regarding an updated sequence number in a LRC extended header (LRCETH) that indicates to the responder information regarding in-order packets that have been received by the requestor device.

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Tel Aviv, Israel

Amit Radzi