netdev - Re: [PATCH v2] ipv4: Early TCP socket demux.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 20 Jun 2012 19:07:44 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	David Miller <davem@...emloft.net>, <shemminger@...tta.com>,
	<netdev@...r.kernel.org>
Subject: Re: [PATCH v2] ipv4: Early TCP socket demux.

On Wed, 2012-06-20 at 07:59 +0200, Eric Dumazet wrote:
> On Tue, 2012-06-19 at 21:46 -0700, David Miller wrote:
> 
> > These numbers can be decreased further, because since we're already
> > looking at the TCP header we can pre-cook the TCP control block in the
> > SKB and skip much of the stuff that tcp_v4_rcv() does since we've done
> > it already in the early demux code.
> 
> It could be done at GRO level and remove one another demux.
> 
> As routers probably have no use of GRO, no need of additional knob.

I don't know what you mean by 'have no use'.  It's enabled anyway, and I
would expect that it's beneficial for some smaller routers.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html