Re: [PATCH v2 net-next] tcp: avoid tx starvation by SYNACK packets
From: Eric Dumazet <hidden>
Date: 2012-06-27 08:02:23
From: Eric Dumazet <hidden>
Date: 2012-06-27 08:02:23
On Wed, 2012-06-27 at 09:54 +0200, Jesper Dangaard Brouer wrote:
Well, that would lead to parallel SYN processing, wouldn't it?
I think we already discussed of the current issues of current code. Telling people to spread SYN to several cpus is a good way to have a freeze in case of synflood, because 15 cpus are busy looping while one is doing progress. Thats why Intel felt the need of a hardware filter to direct all SYN packets on a single queue.