3.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Toshiaki Makita <makita.toshi...@lab.ntt.co.jp>
[ Upstream commit 8d0d21f4053c07714802cbe8b1fe26913ec296cc ]
Even if we create a stacked vlan interface such as veth0.10.20, it sends
single tagged frames (tagged with only vid 10).
Because vlan_features of a veth interface has the
NETIF_F_HW_VLAN_[CTAG/STAG]_TX bits, veth0.10 also has that feature, so
dev_hard_start_xmit(veth0.10) doesn't call __vlan_put_tag() and
vlan_dev_hard_start_xmit(veth0.10) overwrites vlan_tci.
This prevents us from using a combination of 802.1ad and 802.1Q
in containers, etc.
Signed-off-by: Toshiaki Makita <makita.toshi...@lab.ntt.co.jp>
Acked-by: Flavio Leitner <f...@redhat.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/net/veth.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -285,7 +285,8 @@ static void veth_setup(struct net_device
dev->ethtool_ops = &veth_ethtool_ops;
dev->features |= NETIF_F_LLTX;
dev->features |= VETH_FEATURES;
- dev->vlan_features = dev->features;
+ dev->vlan_features = dev->features &
+ ~(NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX);
dev->destructor = veth_dev_free;
dev->hw_features = VETH_FEATURES;
--
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