P4 (programming language): Difference between revisions

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===Stateful processing===
P4 allows the programmer to maintain state in the form of registers, counters and meters.<ref name="P4-16"/>.
 
===Generic match action tables===
The primary component of a P4 program is a set of user-defined match action tables. P4 treats all match action tables as generic, leaving the user to add their match-action rules via the control plane.<ref name="P4-16"/>.
 
====Match-action processing====