Dynamic rdma queue on-loading

An adapter device comprising:

• a storage medium constructed to store adapter device firmware instructions;
• and
• an adapter device processing unit that includes at least one processor constructed to read and execute the firmware instructions, the firmware instructions, when executed by the adapter device processing unit, perform processes including:
• responsive to an RDMA on-load notification for an RDMA queue used in an RDMA connection, moving context information for the RDMA queue from a memory of the adapter device to a main memory of an RDMA-enabled host device and changing ownership of the context information from the adapter device to an operating system of the RDMA-enabled host device,
• wherein at least one of a user-mode module and the operating system provides the RDMA on-load notification responsive to at least one of the user-mode module's and the operating system's determination of an RDMA on-load event for the RDMA queue, and
• wherein during processing of an RDMA transaction of the RDMA queue in a case where the RDMA on-load event is determined, the operating system performs at least one RDMA sub-process of the RDMA transaction,
• wherein the adapter device is configured for remote direct memory access (RDMA) network communication.

A method comprising:

• responsive to determination of a remote direct memory access (RDMA) on-load event for an RDMA queue used in an RDMA connection, generating an RDMA on-load notification;
• responsive to generation of the notification:
• moving context information for the RDMA queue from an adapter device to an RDMA-enabled host device, and
• changing ownership of the context information from the adapter device to an operating system of the RDMA-enabled host device.
• during processing of an RDMA transaction of the RDMA queue in a case where the RDMA on-load event is determined, using the operating system to perform at least one RDMA sub-process of the RDMA transaction.