netdev - [PATCH] vlan: enable GRO if real

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Message-ID: <20100915163749.GA4191@mmm.home.ifup.org>
Date:	Wed, 15 Sep 2010 09:37:49 -0700
From:	Brandon Philips <bphilips@...e.de>
To:	David Miller <davem@...emloft.net>
Cc:	jeffrey.t.kirsher@...el.com, jesse.brandeburg@...el.com,
	bruce.w.allan@...el.com, alexander.h.duyck@...el.com,
	peter.p.waskiewicz.jr@...el.com, john.ronciak@...el.com,
	donald.c.skidmore@...el.com, netdev@...r.kernel.org,
	e1000-devel@...ts.sourceforge.net
Subject: [PATCH] vlan: enable GRO if real_dev supports it

Currently vlan devices don't have GRO by default as none of the Ethernet
drivers add NETIF_F_GRO to their vlan_features.

As GRO is a software feature just propogate GRO from the real_dev in the
vlan core. There is no need to have the drivers each add NETIF_F_GRO to
their vlan_features.

Signed-off-by: Brandon Philips <bphilips@...e.de>
---
 net/8021q/vlan_dev.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 3bccdd1..6fbc445 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -735,6 +735,7 @@ static int vlan_dev_init(struct net_device *dev)
 					  (1<<__LINK_STATE_DORMANT))) |
 		      (1<<__LINK_STATE_PRESENT);
 
+	dev->features |= real_dev->features & NETIF_F_GRO;
 	dev->features |= real_dev->features & real_dev->vlan_features;
 	dev->gso_max_size = real_dev->gso_max_size;
 
-- 
1.7.1

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