From: Michal Kubecek <mkube...@suse.cz>
Date: Fri, 27 May 2016 17:53:52 +0200
> Before commit 6d7b857d541e ("net: use lib/percpu_counter API for
> fragmentation mem accounting"), setting the reassembly high threshold
> to 0 prevented fragment reassembly as first fragment would be always
> evicted before second could be added to the queue. While inefficient,
> some users apparently relied on this method.
>
> Since the commit mentioned above, a percpu counter is used for
> reassembly memory accounting and high batch size avoids taking slow path
> in most common scenarios. As a result, a whole full sized packet can be
> reassembled without the percpu counter's main counter changing its value
> so that even with high_thresh set to 0, fragmented packets can be still
> reassembled and processed.
>
> Add explicit check preventing reassembly if high threshold is zero.
>
> Signed-off-by: Michal Kubecek <mkube...@suse.cz>
Applied, thanks.
