A mechanism for offloading the management of receive queues in a split (eg split socket,
split iSCSI, split DAFS) stack environment, including efficient queue flow control and TCP/IP
retransmission support. An Upper Layer Protocol (ULP) creates receive work queues and
completion queues that are utilized by an Internet Protocol Suite Offload Engine (IPSOE)
and the ULP to transfer information and carry out send operations. As consumers initiate
receive operations, receive work queue entries (RWQEs) are created by the ULP and written …

the present invention relates generally to communication protocols between a host computer
and an input/output (I/O) device. More specifically, the present invention provides a
hardware implementation for offloading management of a receive queue.the present
invention provides a mechanism by which work requests are turned into work queue entries
(WQEs) and are passed from Upper Layer Protocol (eg sockets) software to an Internet
Protocol (IP) Suite Offload Engine (IPSOE).