netdev - Re: [PATCH] bonding: allow TSO being set on bonding master

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Date:	Wed, 15 May 2013 16:30:13 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Michał Mirosław <mirqus@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>, Jay Vosburgh <fubar@...ibm.com>,
	Maciej Żenczykowski <maze@...gle.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	Tom Herbert <therbert@...gle.com>,
	Neal Cardwell <ncardwell@...gle.com>,
	Yuchung Cheng <ycheng@...gle.com>
Subject: Re: [PATCH] bonding: allow TSO being set on bonding master

On Wed, 2013-05-15 at 16:18 -0700, Eric Dumazet wrote:
> On Thu, 2013-05-16 at 00:55 +0200, Michał Mirosław wrote:
> 
> > Have you tried adding it to NETIF_F_ONE_FOR_ALL set? 'Team' and bridge
> > could then also use it.
> 
> Good point, I am testing this, thanks !
> 

Hmm, this doesnt work.


# ethtool -k bond0 | grep tcp-segmentation-offload
tcp-segmentation-offload: off
# ethtool -K bond0 tso on
# ethtool -k bond0 | grep tcp-segmentation-offload
tcp-segmentation-offload: off

Do you have something different in mind ?

diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 77f5202..c8d9db0 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -132,7 +132,7 @@ enum {
  * for all in netdev_increment_features.
  */
 #define NETIF_F_ONE_FOR_ALL    (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
-                                NETIF_F_SG | NETIF_F_HIGHDMA |         \
+                                NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_ALL_TSO |       \
                                 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
 /*
  * If one device doesn't support one of these features, then disable it


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