From owner-freebsd-xen@freebsd.org Wed May 4 07:49:44 2016 Return-Path: Delivered-To: freebsd-xen@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id EAB01B2C7FF for ; Wed, 4 May 2016 07:49:44 +0000 (UTC) (envelope-from prvs=925bc6214=roger.pau@citrix.com) Received: from SMTP.CITRIX.COM (smtp.citrix.com [66.165.176.89]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "mail.citrix.com", Issuer "Verizon Public SureServer CA G14-SHA2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 932011BCF; Wed, 4 May 2016 07:49:44 +0000 (UTC) (envelope-from prvs=925bc6214=roger.pau@citrix.com) X-IronPort-AV: E=Sophos;i="5.24,575,1454976000"; d="scan'208";a="351557802" Date: Wed, 4 May 2016 09:49:36 +0200 From: Roger Pau =?iso-8859-1?Q?Monn=E9?= To: "K. Macy" CC: Miguel C , "freebsd-xen@freebsd.org" , Stephen Jones , Subject: Re: xn ethernet issues as DOMU under NetBSD DOM0 Message-ID: <20160504074936.a5u7pnpzltlyjwaa@mac> References: <20160503072441.qgqgaw52sijybg4a@mac> <20160503093211.hkmbbqr6t2fbxqqa@mac> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.6.0-neo (2016-04-07) X-DLP: MIA2 X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 May 2016 07:49:45 -0000 Hello, I'm adding Wei Liu who did the rework of the netfront driver and added multiqueue to it. On Tue, May 03, 2016 at 03:23:50PM -0700, K. Macy wrote: > On Tue, May 3, 2016 at 3:11 PM, Miguel C wrote: > > This was reported by me and others a few times its was actually fixed in > > some 10.0 (current build at the time) but we could never track it, however > > it always seemed related to tso, netbsd backhend (as I was told back then) > > doesn't support at least tso, and In fact I had the same issue with Windwos > > Guests but the PV drivers dev fixed it (and it was indeed related to this) > > That would explain it. If the Linux backend supports TSO, then > netfront will of course advertise TSO. And presumably there's no way > to query the netback, since Xen is linux-centric. Assuming you haven't > already I would disable TSO. I'm worried it might have something to do with the "feature-sg" node that's exported on the backend path. It seems like FreeBSD correctly acknowledges it, but there might be some bugs there. Stephen, can you paste the output of running `xenstore-ls -fp` on the Dom0 when the FreeBSD DomU has booted? Could you also paste the kernel dmesg of the FreeBSD guest? What seems even more strange is the fact that it works during installs but not after, the kernel is exactly the same for installers, so I'm puzzled. Roger.