[BRIDGE]: Add support for NETIF_F_HW_CSUM devices

As it is the bridge will only ever declare NETIF_F_IP_CSUM even if all
its constituent devices support NETIF_F_HW_CSUM.  This patch fixes
this by supporting the first one out of NETIF_F_NO_CSUM,
NETIF_F_HW_CSUM, and NETIF_F_IP_CSUM that is supported by all
constituent devices.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 0c88a2a..2afdc7c 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -145,9 +145,9 @@
 	struct net_bridge *br = netdev_priv(dev);
 
 	if (data)
-		br->feature_mask |= NETIF_F_IP_CSUM;
+		br->feature_mask |= NETIF_F_NO_CSUM;
 	else
-		br->feature_mask &= ~NETIF_F_IP_CSUM;
+		br->feature_mask &= ~NETIF_F_ALL_CSUM;
 
 	br_features_recompute(br);
 	return 0;
@@ -185,5 +185,5 @@
 	dev->priv_flags = IFF_EBRIDGE;
 
  	dev->features = NETIF_F_SG | NETIF_F_FRAGLIST
- 		| NETIF_F_HIGHDMA | NETIF_F_TSO | NETIF_F_IP_CSUM;
+ 		| NETIF_F_HIGHDMA | NETIF_F_TSO | NETIF_F_NO_CSUM;
 }