Ordering logic ensures that data items being processed by a number of parallel processing units are unloaded from the processing units in the original per-flow order that the data items were loaded into the parallel processing units. The ordering logic includes a pointer memory, a tail vector, and a...http://www.google.com/patents/US7243184?utm_source=gb-gplus-sharePatent US7243184 - Maintaining packet order using hash-based linked-list queues
