REGULAR EXPRESSION SEARCHING OF PACKET CONTENTS USING DEDICATED SEARCH CIRCUITS

摘要

A networking system (12) includes a content search system (1200) for determining whether an input string (STRG) matches a regular expression comprising an exact pattern and an inexact pattern, the content search system (1200) including a first search circuit (1220) dedicated to perform an exact string match operation to determine whether the input string (STRG) contains a first portion that matches the exact pattern, and a second search circuit (1240) dedicated to perform an inexact string match operation to determine whether the input string contains a second portion that matches the inexact pattern.