From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Guthro Subject: Re: Re: [Xen-users] Release 0.9.10 of GPL PV Drivers for Windows / jumbo frames and xen netback changes Date: Tue, 17 Jun 2008 08:36:36 -0400 Message-ID: <4857AFD4.7020407@virtualiron.com> References: <20080617110515.GA4738@edu.joroinen.fi> <20080617122818.GB4738@edu.joroinen.fi> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0567445392==" Return-path: In-Reply-To: <20080617122818.GB4738@edu.joroinen.fi> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Mime-version: 1.0 Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= Cc: James Harper , xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============0567445392== Content-Type: multipart/alternative; boundary="------------060405020602010102020005" This is a multi-part message in MIME format. --------------060405020602010102020005 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit We (VirtualIron) do support jumbo frames - but currently only for iSCSI traffic to dom0 - not for inter-domain communications... ie - not over the bridge/vif. So - I'm not sure that this is what you're talking about here... Pasi Kärkkäinen wrote on 06/17/2008 08:28 AM: > On Tue, Jun 17, 2008 at 09:07:23PM +1000, James Harper wrote: > >>> Hi! >>> >>> Have you thought about adding jumbo frame support (mtu 9000) ? >>> >>> There was some discussion about this earlier, but I guess there was no >>> conclusion.. obviously this feature needs configuration on dom0 too >>> (vif,bridge,peth). >>> >>> >> Yes I've thought about it, but I don't think it's supported by netback >> so there's not a lot I can do. I think some changes need to be made so >> that netback and netfront/gplpv can tell each other the MTU in use. >> >> > > Hmm.. OK. > > Somehow I thought some Xen implementation (Citrix XenServer or VirtualIron) > supported jumbos.. but I'm not sure about that. I'd have to check again. > > Does someone else have more information about this? > > -- Pasi > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel > --------------060405020602010102020005 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit We (VirtualIron) do support jumbo frames - but currently only for iSCSI traffic to dom0 - not for inter-domain communications... ie - not over the bridge/vif. So - I'm not sure that this is what you're talking about here...


Pasi Kärkkäinen wrote on 06/17/2008 08:28 AM: 
On Tue, Jun 17, 2008 at 09:07:23PM +1000, James Harper wrote:
  
Hi!

Have you thought about adding jumbo frame support (mtu 9000) ?

There was some discussion about this earlier, but I guess there was no
conclusion.. obviously this feature needs configuration on dom0 too
(vif,bridge,peth).

      
Yes I've thought about it, but I don't think it's supported by netback 
so there's not a lot I can do. I think some changes need to be made so 
that netback and netfront/gplpv can tell each other the MTU in use.

    

Hmm.. OK. 

Somehow I thought some Xen implementation (Citrix XenServer or VirtualIron)
supported jumbos.. but I'm not sure about that. I'd have to check again.

Does someone else have more information about this? 

-- Pasi

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