On Wed, Oct 26, 2016 at 11:39 AM, Neal Cardwell <ncardw...@google.com> wrote: > > On Wed, Oct 26, 2016 at 12:27 PM, Eric Dumazet <eric.duma...@gmail.com> wrote: > > From: Eric Dumazet <eduma...@google.com> > > > > Per listen(fd, backlog) rules, there is really no point accepting a SYN, > > sending a SYNACK, and dropping the following ACK packet if accept queue > > is full, because application is not draining accept queue fast enough. > > > > This behavior is fooling TCP clients that believe they established a > > flow, while there is nothing at server side. They might then send about > > 10 MSS (if using IW10) that will be dropped anyway while server is under > > stress. > > > > Signed-off-by: Eric Dumazet <eduma...@google.com> > > --- > > Acked-by: Neal Cardwell <ncardw...@google.com> Acked-by: Yuchung Cheng <ych...@google.com>
It's too bad the git has no history of the extra young sockets check. it seemed to be some kind bandaid fix before syn-cookie was invented? > > Great. Thanks, Eric! > > neal
