net: dev: rename queue selection helpers.

With the following patches, we are going to use __netdev_pick_tx() in
many modules. Rename it to netdev_pick_tx(), to make it clear is
a public API.

Also rename the existing netdev_pick_tx() to netdev_core_pick_tx(),
to avoid name clashes.
Suggested-by: NEric Dumazet <edumazet@google.com>
Suggested-by: NDavid Miller <davem@davemloft.net>
Signed-off-by: NPaolo Abeni <pabeni@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/netdevice.h

@@ -2152,9 +2152,9 @@ static inline void netdev_for_each_tx_queue(struct net_device *dev,
 				  &qdisc_xmit_lock_key);	\
 }
 
-struct netdev_queue *netdev_pick_tx(struct net_device *dev,
-				    struct sk_buff *skb,
-				    struct net_device *sb_dev);
+struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
+					 struct sk_buff *skb,
+					 struct net_device *sb_dev);
 
 /* returns the headroom that the master device needs to take in account
  * when forwarding to this dev

net/core/dev.c

@@ -3704,8 +3704,8 @@ u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb,
 }
 EXPORT_SYMBOL(dev_pick_tx_cpu_id);
 
-static u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
-			    struct net_device *sb_dev)
+static u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
+			  struct net_device *sb_dev)
 {
 	struct sock *sk = skb->sk;
 	int queue_index = sk_tx_queue_get(sk);
@@ -3730,9 +3730,9 @@ static u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
 	return queue_index;
 }
 
-struct netdev_queue *netdev_pick_tx(struct net_device *dev,
-				    struct sk_buff *skb,
-				    struct net_device *sb_dev)
+struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
+					 struct sk_buff *skb,
+					 struct net_device *sb_dev)
 {
 	int queue_index = 0;
 
@@ -3748,9 +3748,9 @@ struct netdev_queue *netdev_pick_tx(struct net_device *dev,
 
 		if (ops->ndo_select_queue)
 			queue_index = ops->ndo_select_queue(dev, skb, sb_dev,
-							    __netdev_pick_tx);
+							    netdev_pick_tx);
 		else
-			queue_index = __netdev_pick_tx(dev, skb, sb_dev);
+			queue_index = netdev_pick_tx(dev, skb, sb_dev);
 
 		queue_index = netdev_cap_txqueue(dev, queue_index);
 	}
@@ -3824,7 +3824,7 @@ static int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev)
 	else
 		skb_dst_force(skb);
 
-	txq = netdev_pick_tx(dev, skb, sb_dev);
+	txq = netdev_core_pick_tx(dev, skb, sb_dev);
 	q = rcu_dereference_bh(txq->qdisc);
 
 	trace_net_dev_queue(skb);
@@ -4429,7 +4429,7 @@ void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog)
 	bool free_skb = true;
 	int cpu, rc;
 
-	txq = netdev_pick_tx(dev, skb, NULL);
+	txq = netdev_core_pick_tx(dev, skb, NULL);
 	cpu = smp_processor_id();
 	HARD_TX_LOCK(dev, txq, cpu);
 	if (!netif_xmit_stopped(txq)) {

net/core/netpoll.c

@@ -323,7 +323,7 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
 	if (skb_queue_len(&npinfo->txq) == 0 && !netpoll_owner_active(dev)) {
 		struct netdev_queue *txq;
 
-		txq = netdev_pick_tx(dev, skb, NULL);
+		txq = netdev_core_pick_tx(dev, skb, NULL);
 
 		/* try until next clock tick */
 		for (tries = jiffies_to_usecs(1)/USEC_PER_POLL;

net/xfrm/xfrm_device.c

@@ -247,7 +247,7 @@ void xfrm_dev_resume(struct sk_buff *skb)
 	unsigned long flags;
 
 	rcu_read_lock();
-	txq = netdev_pick_tx(dev, skb, NULL);
+	txq = netdev_core_pick_tx(dev, skb, NULL);
 
 	HARD_TX_LOCK(dev, txq, smp_processor_id());
 	if (!netif_xmit_frozen_or_stopped(txq))