# \[PATCH 8/13\]: netdev: Add netdev-\>select\_queue() method.

- From: David Miller \<davem@davemloft.net\>
- Date: 2008-07-10 10:57:01 
- List: netdev
- Page: https://ratatoskr.run/netdev/2008/07/10803247

```text

Devices or device layers can set this to control the
queue selection performed by dev_pick_tx().

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/netdevice.h |    3 +++
 net/core/dev.c            |    3 +++
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b580331..17a81d0 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -723,6 +723,9 @@ struct net_device
 	void                    (*poll_controller)(struct net_device *dev);
 #endif
 
+	u16			(*select_queue)(struct net_device *dev,
+						struct sk_buff *skb);
+
 #ifdef CONFIG_NET_NS
 	/* Network namespace this network device is inside */
 	struct net		*nd_net;
diff --git a/net/core/dev.c b/net/core/dev.c
index 0c088b5..db95b49 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1670,6 +1670,9 @@ static struct netdev_queue *dev_pick_tx(struct net_device *dev,
 {
 	u16 queue_index = 0;
 
+	if (dev->select_queue)
+		queue_index = dev->select_queue(dev, skb);
+
 	skb_set_queue_mapping(skb, queue_index);
 	return netdev_get_tx_queue(dev, queue_index);
 }
-- 
1.5.6.2.255.gbed62

```