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Date: Wed, 08 May 2013 20:22:23 +0800 From: Cong Wang <amwang@...hat.com> To: PJ Waskiewicz <peter.p.waskiewicz.jr@...ux.intel.com> Cc: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net> Subject: Re: Regression: too many packets with incorrect checksum On Wed, 2013-05-08 at 05:15 -0700, PJ Waskiewicz wrote: > On 5/8/2013 4:51 AM, Cong Wang wrote: > > Hi, all > > > > The latest -net tree has some regression, I saw too many packets with > > incorrect checksum from tcpdump inside a KVM guest, see the bottom. > > (firewall is turned off on both sides.) > > > > It seems this is not related with drivers, I tried virtio and e1000, > > both have the same problem. And UDP has the problem too. But turning off > > tx-checksum by `ethtool -K eth0 tx off` makes the problem disappear > > (just turning off TSO or GSO doesn't make any difference). > > > > I can provide other information if you need. > > Reproduce on bare metal, non-KVM? > Sorry that I don't have env or time to test it on non-KVM, because my kernel config is specific to KVM and kicks out all modules. -- 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
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