On 21.12.2024 19:34, Bjoern A. Zeeb wrote:
How much use are FIBs still these days? Half of the original use cases
I can think of could easily and better be overcome by using vnet jails
with a physical or virtual interface (e.g, vcc) being delegated to the
vnet.
I wonder if anyone on FreeBSD is using FIBs to actually have multi-FIB
forwardig but that very little touches your use case apart from the mgmt
which again can be factored out better (or inversely, factoring out the
forwarding).
I would honestly know who and how FIBs are still in use today or if they
should be put on a list to be removed for 16 (I assume I might be
surprised).
That all said with your opt-in approach if the code itself doesn't bring
too many new complications I'd be happy with it (assuming FIBs still
have a use case).
Some might say that VNET is useless and should be removed instead. We
have bhyve and old-style jails. Without VNET the kernel code will be
robust and simple again, and easy for debugging.
But 1st April is not yet, and someone will say nothing.
FIBs are useful as is, but also can be used with "ipfw setfib" that make
it irreplaceable.
--
WBR, Andrey V. Elsukov
