[VLAN]: Propagate selected feature bits to VLAN devices
Propagate feature bits from the NETDEV_FEAT_CHANGE notifier. For now
only TSO is propagated for devices that announce their ability to
support TSO in combination with VLAN accel by setting the NETIF_F_VLAN_TSO
flag.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index c961f08..b1cfbaa 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -663,6 +663,11 @@
(1<<__LINK_STATE_DORMANT))) |
(1<<__LINK_STATE_PRESENT);
+ if (real_dev->features & NETIF_F_VLAN_TSO)
+ dev->features |= real_dev->features & VLAN_TSO_FEATURES;
+ if (real_dev->features & NETIF_F_VLAN_CSUM)
+ dev->features |= real_dev->features & NETIF_F_ALL_CSUM;
+
/* ipv6 shared card related stuff */
dev->dev_id = real_dev->dev_id;