US 2018/0004705 A1 · Selective acknowledgment of RDMA packets

Abstract

A method for data transfer includes transmitting a sequence of data packets, including at least a first packet and a second packet transmitted subsequently to the first packet, from a first computer over a network to a second computer in a single remote direct memory access (RDMA) data transfer transaction. Upon receipt of the second packet at the second computer without previously having received the first packet, a negative acknowledgment (NAK) packet is sent from the second computer over the network to the first computer, indicating that the first packet was not received. In response to the NAK packet, the first packet is retransmitted from the first computer to the second computer without retransmitting the second packet.

Claims20

Dependent claims

A method for data transfer, comprising:

transmitting a sequence of data packets, including at least a first packet and a second packet transmitted subsequently to the first packet, from a first computer over a network to a second computer in a single remote direct memory access (RDMA) data transfer transaction;
upon receipt of the second packet at the second computer without previously having received the first packet, sending a negative acknowledgment (NAK) packet from the second computer over the network to the first computer, indicating that the first packet was not received;
and
in response to the NAK packet, retransmitting the first packet from the first computer to the second computer without retransmitting the second packet.

1 more element

Dependencies are inferred from the claim text.

Selective acknowledgment of RDMA packets

Life of this patent

Selective acknowledgment of RDMA packets

Life of this patent

Abstract

Claims20