net: Do txq_trans_update() in netdev_start_xmit()

That way we don't have to audit every call site to make sure it is
doing this properly.
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wan/dlci.c

@@ -192,8 +192,10 @@ static netdev_tx_t dlci_transmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct dlci_local *dlp = netdev_priv(dev);
 
-	if (skb)
-		netdev_start_xmit(skb, dlp->slave);
+	if (skb) {
+		struct netdev_queue *txq = skb_get_tx_queue(dev, skb);
+		netdev_start_xmit(skb, dlp->slave, txq);
+	}
 	return NETDEV_TX_OK;
 }
 

include/linux/netdevice.h

@@ -3437,11 +3437,17 @@ static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops,
 	return ops->ndo_start_xmit(skb, dev);
 }
 
-static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev,
+					    struct netdev_queue *txq)
 {
 	const struct net_device_ops *ops = dev->netdev_ops;
+	int rc;
 
-	return __netdev_start_xmit(ops, skb, dev);
+	rc = __netdev_start_xmit(ops, skb, dev);
+	if (rc == NETDEV_TX_OK)
+		txq_trans_update(txq);
+
+	return rc;
 }
 
 int netdev_class_create_file_ns(struct class_attribute *class_attr,

net/core/dev.c

@@ -2666,10 +2666,8 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
 
 		skb_len = skb->len;
 		trace_net_dev_start_xmit(skb, dev);
-		rc = netdev_start_xmit(skb, dev);
+		rc = netdev_start_xmit(skb, dev, txq);
 		trace_net_dev_xmit(skb, rc, dev, skb_len);
-		if (rc == NETDEV_TX_OK)
-			txq_trans_update(txq);
 		return rc;
 	}
 
@@ -2685,7 +2683,7 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
 
 		skb_len = nskb->len;
 		trace_net_dev_start_xmit(nskb, dev);
-		rc = netdev_start_xmit(nskb, dev);
+		rc = netdev_start_xmit(nskb, dev, txq);
 		trace_net_dev_xmit(nskb, rc, dev, skb_len);
 		if (unlikely(rc != NETDEV_TX_OK)) {
 			if (rc & ~NETDEV_TX_MASK)
@@ -2694,7 +2692,6 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
 			skb->next = nskb;
 			return rc;
 		}
-		txq_trans_update(txq);
 		if (unlikely(netif_xmit_stopped(txq) && skb->next))
 			return NETDEV_TX_BUSY;
 	} while (skb->next);

net/core/netpoll.c

@@ -91,9 +91,7 @@ static int netpoll_start_xmit(struct sk_buff *skb, struct net_device *dev,
 		skb->vlan_tci = 0;
 	}
 
-	status = netdev_start_xmit(skb, dev);
-	if (status == NETDEV_TX_OK)
-		txq_trans_update(txq);
+	status = netdev_start_xmit(skb, dev, txq);
 
 out:
 	return status;

net/core/pktgen.c

@@ -3335,11 +3335,10 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
 		goto unlock;
 	}
 	atomic_inc(&(pkt_dev->skb->users));
-	ret = netdev_start_xmit(pkt_dev->skb, odev);
+	ret = netdev_start_xmit(pkt_dev->skb, odev, txq);
 
 	switch (ret) {
 	case NETDEV_TX_OK:
-		txq_trans_update(txq);
 		pkt_dev->last_ok = 1;
 		pkt_dev->sofar++;
 		pkt_dev->seq_num++;

net/packet/af_packet.c

@@ -258,11 +258,8 @@ static int packet_direct_xmit(struct sk_buff *skb)
 	local_bh_disable();
 
 	HARD_TX_LOCK(dev, txq, smp_processor_id());
-	if (!netif_xmit_frozen_or_drv_stopped(txq)) {
-		ret = netdev_start_xmit(skb, dev);
-		if (ret == NETDEV_TX_OK)
-			txq_trans_update(txq);
-	}
+	if (!netif_xmit_frozen_or_drv_stopped(txq))
+		ret = netdev_start_xmit(skb, dev, txq);
 	HARD_TX_UNLOCK(dev, txq);
 
 	local_bh_enable();

net/sched/sch_teql.c

@@ -316,8 +316,7 @@ static netdev_tx_t teql_master_xmit(struct sk_buff *skb, struct net_device *dev)
 				unsigned int length = qdisc_pkt_len(skb);
 
 				if (!netif_xmit_frozen_or_stopped(slave_txq) &&
-				    netdev_start_xmit(skb, slave) == NETDEV_TX_OK) {
-					txq_trans_update(slave_txq);
+				    netdev_start_xmit(skb, slave, slave_txq) == NETDEV_TX_OK) {
 					__netif_tx_unlock(slave_txq);
 					master->slaves = NEXT_SLAVE(q);
 					netif_wake_queue(dev);