[Bug 282984] [PATCH] pfctl: add -T `makezero` to touch pfras_tzero _only_ for non-zero entries

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282984

--- Comment #7 from Kristof Provost <kp@freebsd.org> ---
(In reply to Leonid Evdokimov from comment #6)
I don't have any particularly strong opinions here. I'm unlikely to use either
option myself.

I will point out that even moving this operation entirely into the kernel
doesn't make it race-free, because counters use counter_u64, which uses
per-core counters, so there's never an atomic view of the actual counter value.
It's inherently an approximate snapshot.

So it's probably better to use the existing 'zero 1.2.3.4 5.6.7.8 ..' option.

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