Dreambig Semiconductor Inc.

David Arditti Ilitzky

Brian Hausauer

Linghe Wang

A best efforts (BE) hardware remote direct memory access (RDMA) transport being performed by a smart network interface controller (NIC). Elements from RoCEv2 and iWARP are utilized in combination with extensions to improve flexibility and packet error recovery. Flexibility is provided by allowing RDMA roles to be individually specified. Flexibility is also provided by additional packet numbering options to allow interleaving of request and response messages at a packet boundary. Error recovery is improved by utilized new acknowledgement responses, SNAK provided for each new hole detected and RACK for each received packet after a SNAK. SNAK allows the indication of resource exhaustion at the receiver, causing entry into a recovery mode where only packets in a hole are transmitted until resources are recovered.

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Zapopan, Mexico

David Arditti Ilitzky