Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264992AbUFVQMv (ORCPT ); Tue, 22 Jun 2004 12:12:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264916AbUFVQMU (ORCPT ); Tue, 22 Jun 2004 12:12:20 -0400 Received: from gate.crashing.org ([63.228.1.57]:18600 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S265027AbUFVQL5 (ORCPT ); Tue, 22 Jun 2004 12:11:57 -0400 Subject: Re: sungem - ifconfig eth0 mtu 1300 -> oops From: Benjamin Herrenschmidt To: Jeff Garzik Cc: Chris Friesen , "David S. Miller" , Herbert Xu , kernel@nn7.de, Linux Kernel list , netdev@oss.sgi.com In-Reply-To: <40D84A9B.8010503@pobox.com> References: <20040621141144.119be627.davem@redhat.com> <40D847E3.2080109@nortelnetworks.com> <40D84A9B.8010503@pobox.com> Content-Type: text/plain Message-Id: <1087920212.22687.50.camel@gaston> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 22 Jun 2004 11:03:34 -0500 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 916 Lines: 24 On Tue, 2004-06-22 at 10:04, Jeff Garzik wrote: > Chris Friesen wrote: > > Just a quick question. Does the sungem chip support jumbo frames? I'd > > like to use MTU of 9000 to make large local transfers more efficient, > > but it didn't seem to work last time I checked. > > > Are you 100% certain you configured the other side to support jumbo? > > Jumbo frames are non-standard, and sometimes require configuring MTU on > the switch or remote network card (if directly connected). Well, it's not enabled in the driver I think, or at least it wasn't last time I looked. Dave told me the chip fifo's are too small to do anything useful with jumbo frames. Ben. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/