[Bug 211730] pf uses 32bit value for bandwith with altq

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211730

--- Comment #6 from Kristof Provost <kp at freebsd.org> ---
(In reply to Mahdi Mokhtari from comment #4)
The problem with the ABI is that we can't rely on user space and kernel space
running the same code versions. If someone were to update the kernel, but not
the user space code (I don't think we support the reverse) they'd disagree
about the size of the bandwidth fields and things would break.

It'll likely be best to have two versions of the ioctl() command, one which
implements the old 32-bit behaviour (on the same ID as before!), and a new one
which implements the new 64-bit values.

That'd have to be supported for a bit, but hopefully it can be removed
eventually.

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