netdev - Re: Performance regression 3.11 with macvlan between 2 linux guests (bisected)

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Message-ID: <5215CA84.8070906@de.ibm.com>
Date:	Thu, 22 Aug 2013 10:23:32 +0200
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	vyasevic@...hat.com
CC:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Matthew Rosato <mjrosato@...ux.vnet.ibm.com>,
	Jason Wang <jasowang@...hat.com>
Subject: Re: Performance regression 3.11 with macvlan between 2 linux guests
 (bisected)

On 21/08/13 20:12, Vlad Yasevich wrote:

>>
>> A corrected patch has been sent upstream.  We take into consideration
>> the features on the target device that the user/vm has specified.
>> If the VM has enabled the TSO flags, then nothing will happen to the
>> GSO packet.  However, if the TSO flag is off, segmentation will be
>> performed.
> 
> Particularly.  This commit should fix the issue:
> commit a567dd6252263c8147b7269df5d03d9e31463e11
>  macvtap: simplify usage of tap_features

Tested-by: Christian Borntraeger <borntraeger@...ibm.com>

The patch is still in net.git, but not in Linus git. Are we going to push this
for 3.11?




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