Patent ID: 7818459

Claim:
A network coupling element comprising: a local memory; and control logic configured to: responsive to an indication to copy transmission control information from a system memory on a CPU subsystem, determine if the local memory has enough free storage space to store the transmission control information; responsive to a determination that there is enough free storage space to store the transmission control information: store said transmission control information in the local memory; and responsive to a determination that there is not enough free storage space to store the transmission control information: conduct a cast-out/cast-in process in said local memory; write a cast out entry back into an address in the system memory from said local memory by using a directory storing queue_air number with the address of the system memory; store the transmission control information into the local memory by overwriting the cast out entry; store an address and queue pair number of the transmission control information into the directory; and use the transmission control information in the local memory to process address translation and protection tables.