From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zoltan Kiss Subject: Re: [GIT net-next] Open vSwitch Date: Tue, 14 Jan 2014 00:31:56 +0000 Message-ID: <52D4857C.7020902@citrix.com> References: <1389053776-62865-1-git-send-email-jesse@nicira.com> <52CD657F.7080806@citrix.com> <52D42A9E.1030805@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Cc: "dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org" , netdev , David Miller To: Jesse Gross Return-path: In-Reply-To: <52D42A9E.1030805-Sxgqhf6Nn4DQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org Errors-To: dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org List-Id: netdev.vger.kernel.org On 13/01/14 18:04, Zoltan Kiss wrote: > On 08/01/14 15:10, Jesse Gross wrote: >> On Wed, Jan 8, 2014 at 9:49 AM, Zoltan Kiss >> wrote: >>> Hi, >>> >>> I've tried the latest net-next on a Xenserver install with 1.9.3 >>> userspace, >>> and it seems this patch series broke it (at least after reverting that >>> locally it works now). I haven't went too far yet checking what's the >>> problem, but it seems the xenbrX device doesn't really receive too >>> much of >>> the traffic coming through the NIC. Is it expected? >> >> What do you mean by doesn't receive too much traffic? What does it get? >> > > Sorry for the vague error description, now I had more time to look > into this. I think the problem boils down to this: > > Jan 13 17:55:07 localhost ovs-vswitchd: > 07890|netlink_socket|DBG|nl_sock_recv__ (Success): nl(len:274, > type=29(ovs_packet), flags=0, seq=0, pid=0,genl(cmd=1,version=1) > Jan 13 17:55:07 localhost ovs-vswitchd: 07891|netlink|DBG|attributes > followed by garbage > Jan 13 17:55:07 localhost ovs-vswitchd: 07892|dpif|WARN|system@xenbr0: > recv failed (Invalid argument) > > That's just keep repeating. I'm keep looking. Now I reverted these top 3 commits: ovs: make functions local openvswitch: Compute checksum in skb_gso_segment() if needed openvswitch: Use skb_zerocopy() for upcall And it works. I guess the last one causing the problem. Might be an important factor, I'm using 32 bit Dom0. Zoli