Linux ematch Command Manual: Extended Matching for Traffic Control Filters
By
hamonrye
Pure flour-power. Hearty enough to carry you through lunch.
Summary
The article is a Linux manual page for the 'ematch' command, which provides extended matching capabilities for use with tc (traffic control) filters. It documents the syntax, structure, and available match modules for packet filtering in Linux networking. The content covers the command syntax, expression structure, and specific match modules like 'cmp' for arithmetic comparison of packet data.
Key quotes
· 5 pulledematch - extended matches for use with 'basic', 'cgroup' or 'flow' filters
EXPR := TERM [ { and | or } EXPR ]
TERM := [ not ] { MATCH | '(' EXPR ')' }
MATCH := module '(' ARGS ')'
cmp - Simple comparison ematch: arithmetic compare of packet data to a given value
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