Patent ID: 11968260
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 4:
5. The network interface card according to claim 1, wherein
the RDMA operation command is an input/output (IO) read command,
after the first controller sends an RDMA write message by using the first shared connector, the disconnection event occurs before a negative acknowledgment message of the RDMA write message is received or before a retransmission packet of the RDMA write message is sent because the negative acknowledgment message of the RDMA write message is received,
the first RDMA message is a second SEND message comprising an IO response,
the IO response indicates a read operation is completed, and
before sending the first RDMA message corresponding to the first QP connection to the host client based on the WQE, the network interface card is further caused to:
send a fake retransmission packet of the RDMA write message to the host client, wherein a packet sequence number (PSN) of the fake retransmission packet is the last RDMA packet of the RDMA write message sent before the disconnection event occurs, or a PSN of an initial retransmission packet of the RDMA write message.