From: Paolo Abeni <pab...@redhat.com>
Date: Fri, 25 Aug 2017 14:31:01 +0200
> Currently, in the udp6 code, the dst cookie is not initialized/updated
> concurrently with the RX dst used by early demux.
>
> As a result, the dst_check() in the early_demux path always fails,
> the rx dst cache is always invalidated, and we can't really
> leverage significant gain from the demux lookup.
>
> Fix it adding udp6 specific variant of sk_rx_dst_set() and use it
> to set the dst cookie when the dst entry is really changed.
>
> The issue is there since the introduction of early demux for ipv6.
>
> Fixes: 5425077d73e0 ("net: ipv6: Add early demux handler for UDP unicast")
> Acked-by: Hannes Frederic Sowa <han...@stressinduktion.org>
> Signed-off-by: Paolo Abeni <pab...@redhat.com>
Applied and queued up for -stable, thanks.
