vlan: enable multiqueue xmits

vlan_dev_hard_start_xmit() & vlan_dev_hwaccel_hard_start_xmit()
select txqueue number 0, instead of using index provided by
skb_get_queue_mapping().

This is not correct after commit 2e59af3dcbdf11635c03f
[vlan: multiqueue vlan device] because
txq->tx_packets  & txq->tx_bytes changes are performed on
a single location, and not the right locking.

Fix is to take the appropriate struct netdev_queue pointer

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 53f84c743928..3938c3e50fb1 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -291,7 +291,8 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
 static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
                                             struct net_device *dev)
 {
-        struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
+        int i = skb_get_queue_mapping(skb);
+        struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
 
         /* Handle non-VLAN frames if they are sent to us, for example by DHCP.
@@ -329,7 +330,8 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
 static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
                                                     struct net_device *dev)
 {
-        struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
+        int i = skb_get_queue_mapping(skb);
+        struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
         u16 vlan_tci;
 
         vlan_tci = vlan_dev_info(dev)->vlan_id;