Patent ID: 7085869

Claim:
A method in a host channel adapter, the method comprising: first storing in a table, at an end of each access cycle by a retransmission manager, entries identifying respective packets wherein each entry identifies a corresponding one of said packets, said packets having been transmitted onto an InfiniBand™ network according to InfiniBand™ protocol and during said each access cycle according to an InfiniBand™-based service protocol requiring an acknowledgement message receipt within a prescribed time interval following transmission of the corresponding packet; resetting an acknowledgment waiting bit for a selected one of the entries by an acknowledgement manager in response to reception of an acknowledgment message identifying the corresponding packet identified by the selected one entry; and transferring the entries having a determined absence of the reset stored acknowledgment waiting bit upon expiration of the prescribed time interval to a transmit queue for retransmission onto the InfiniBand™ network according to InfiniBand™ protocol.