netdev - Re: [PATCH] tcp: Socket option to set congestion window

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]

Message-ID: <20100527080025.GB6800@basil.fritz.box>
Date:	Thu, 27 May 2010 10:00:25 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	David Miller <davem@...emloft.net>
Cc:	andi@...stfloor.org, therbert@...gle.com, shemminger@...tta.com,
	netdev@...r.kernel.org, ycheng@...gle.com
Subject: Re: [PATCH] tcp: Socket option to set congestion window

On Wed, May 26, 2010 at 03:10:14PM -0700, David Miller wrote:
> From: Andi Kleen <andi@...stfloor.org>
> Date: Wed, 26 May 2010 23:27:45 +0200
> 
> > As I understand the idea was that the application knows
> > what flows belong to a single peer and wants to have
> > a single cwnd for all of those. Perhaps there would
> > be a way to generalize that to tell it to the kernel.
> > 
> > e.g. have a "peer id"  that is known by applications
> > and the kernel could manage cwnds shared between connections
> > associated with the same peer id?
> > 
> > Just an idea, I admit I haven't thought very deeply
> > about this. Feel free to poke holes into it.
> 
> Yes, a CWND "domain" that can include multiple sockets is
> something that might gain some traction.
> 
> The "domain" could just simply be the tuple {process,peer-IP}

If process is in there this wouldn't work for a multi process
server?

Perhaps having it associated with a FD so that it could
be passed around with unix sockets if needed (just would
need to make sure the AF_UNIX gc can handle such cycles)

peer_id = open_peer_id();   
/* peer id is like a fd */

socket = socket( ... ); 
set_peer_id(socket, peer_id); 


...

close(peer_id);

-andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
--
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