netdev - [PATCH] net: Make UFO on master device independent of attached devices

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Message-Id: <1254954265.31575.191.camel@w-sridhar.beaverton.ibm.com>
Date:	Wed, 07 Oct 2009 15:24:25 -0700
From:	Sridhar Samudrala <sri@...ibm.com>
To:	David Miller <davem@...emloft.net>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	netdev <netdev@...r.kernel.org>
Subject: [PATCH] net: Make UFO on master device independent of attached
 devices

Now that software UFO is supported, UFO can be enabled on master
devices like bridge, bond even though the attached device doesn't
support this feature in hardware.

This allows UFO to be used between KVM host and guest even when a
physical interface attached to the bridge doesn't support UFO.

Signed-off-by: Sridhar Samudrala <sri@...ibm.com>
 
diff --git a/net/core/dev.c b/net/core/dev.c
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5483,7 +5483,7 @@ unsigned long netdev_increment_features(unsigned long all, unsigned long one,
 	one |= NETIF_F_ALL_CSUM;
 
 	one |= all & NETIF_F_ONE_FOR_ALL;
-	all &= one | NETIF_F_LLTX | NETIF_F_GSO;
+	all &= one | NETIF_F_LLTX | NETIF_F_GSO | NETIF_F_UFO;
 	all |= one & mask & NETIF_F_ONE_FOR_ALL;
 
 	return all;


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