FLOW CONTROL CREDIT UPDATES FOR VIRTUAL CHANNELS IN THE ADVANCED SWITCHING (AS) ARCHITECTURE

摘要

Devices in an Advanced Switching (AS) fabric may include state machines for controlling the generation and transmission of flow control (FC) update data link layer packets (DLLPs) between link partners (510). A link partner may use the state machine to generate flow control update DLLPs for all available virtual channels (VCs) and transmit the FC update DLLPs contiguously to prevent any given VC from failing to perform an FC update refresh within an FC update timeout period due to injection of large packets (e.g., AS transaction layer packets (TLPs)) between the FC Update DLLPs.