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authorToshiaki Makita <makita.toshiaki@lab.ntt.co.jp>2014-02-18 16:20:08 +0400
committerDavid S. Miller <davem@davemloft.net>2014-02-20 11:15:38 +0400
commit8d0d21f4053c07714802cbe8b1fe26913ec296cc (patch)
tree175b84daba5f41845a9f0bd999992c19078333d3 /drivers/net/veth.c
parentebe44f350e15d6142d4d74cbaec0dad976c36753 (diff)
downloadlinux-8d0d21f4053c07714802cbe8b1fe26913ec296cc.tar.xz
veth: Fix vlan_features so as to be able to use stacked vlan interfaces
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.toshiaki@lab.ntt.co.jp> Acked-by: Flavio Leitner <fbl@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/veth.c')
-rw-r--r--drivers/net/veth.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 2ec2041b62d4..5b374370f71c 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -285,7 +285,8 @@ static void veth_setup(struct net_device *dev)
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;