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Add dtrace SDT probe ipfw:::rule-matched.

Description

Add dtrace SDT probe ipfw:::rule-matched.

It helps to reduce complexity with debugging of large ipfw rulesets.
Also define several constants and translators, that can by used by
dtrace scripts with this probe.

Reviewed by: gnn
Obtained from: Yandex LLC
MFC after: 2 weeks
Sponsored by: Yandex LLC
Differential Revision: https://reviews.freebsd.org/D26879

Details

Provenance
aeAuthored on
Reviewer
gnn
Differential Revision
D26879: Add ipfw SDT probe.
Parents
rS366907: cache: drop the spurious slash_prefixed argument
Branches
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Tags
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