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Message-Id: <20160823.163941.1551130952096100509.davem@davemloft.net> Date: Tue, 23 Aug 2016 16:39:41 -0700 (PDT) From: David Miller <davem@...emloft.net> To: eric.dumazet@...il.com Cc: labbott@...hat.com, samanthakumar@...gle.com, willemb@...gle.com, netdev@...r.kernel.org Subject: Re: [PATCH v2 net] udp: fix poll() issue with zero sized packets From: Eric Dumazet <eric.dumazet@...il.com> Date: Tue, 23 Aug 2016 13:59:33 -0700 > From: Eric Dumazet <edumazet@...gle.com> > > 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 an signed int, and use -1 > as the indication of an empty queue. > > Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing") > Reported-by: Laura Abbott <labbott@...hat.com> > Signed-off-by: Eric Dumazet <edumazet@...gle.com> > Tested-by: Laura Abbott <labbott@...hat.com> > --- > v2: fix the comment/doc (Willem) Applied and queued up for -stable, thanks.
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