From: Eric Dumazet
Date: Tue, 23 Aug 2016 13:59:33 -0700
> From: Eric Dumazet
>
> Laura tracked poll() [and friends] regression caused by commit
> e6afc8ace6dd ("udp: remove headers from UDP packets before queueing")
>
> udp_poll() needs to know if there is a valid packet in receive queue,
> e
From: Eric Dumazet
Laura tracked poll() [and friends] regression caused by commit
e6afc8ace6dd ("udp: remove headers from UDP packets before queueing")
udp_poll() needs to know if there is a valid packet in receive queue,
even if its payload length is 0.
Change first_packet_length() to return a
