Kristof Provost 1c00efe98e pf: Use counter(9) for pf_state byte/packet tracking
This improves cache behaviour by not writing to the same variable from
multiple cores simultaneously.

pf_state is only used in the kernel, so can be safely modified.

Reviewed by:	Lutz Donnerhacke, philip
MFC after:	1 week
Sponsed by:	Orange Business Services
Differential Revision:	https://reviews.freebsd.org/D27661
2020-12-23 12:03:21 +01:00
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