vlan: multiqueue vlan device

vlan devices are currently not multi-queue capable.

We can do that with a new rtnl_link_ops method,
get_tx_queues(), called from rtnl_create_link()

This new method gets num_tx_queues/real_num_tx_queues
from real device.

register_vlan_device() is also handled.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index e814794b0a1a..8836575f9d79 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -330,12 +330,13 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
                 snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
         }
 
-        new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name,
-                               vlan_setup);
+        new_dev = alloc_netdev_mq(sizeof(struct vlan_dev_info), name,
+                                  vlan_setup, real_dev->num_tx_queues);
 
         if (new_dev == NULL)
                 return -ENOBUFS;
 
+        new_dev->real_num_tx_queues = real_dev->real_num_tx_queues;
         dev_net_set(new_dev, net);
         /* need 4 bytes for extra VLAN header info,
          * hope the underlying device can handle it.