Re: [PATCH RFC 0/4] net: add bpfilter

On Monday 2018-02-19 16:32, David Miller wrote:

From: Harald Welte <laforge@gnumonks.org>
Date: Mon, 19 Feb 2018 16:23:21 +0100

quoted

Also, as long as legacy ip_tables/x_tables is still in the kernel, you
can still run your old userspace against that old implementation in the
kernel.

But without offloading, and the various other benefits which I have
tried to clearly explain to both you and Florian.

Which is actually the business model to get people *off* the old ABI in 
reasonable time. Otherwise, we would have to ask ourselves why we have 
not yet enhanced /dev/raw with mmap and whatnot.