[NET]: Use the skb_set_queue_mapping where appropriate

There's already such a helper to initialize this field.  Use it.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/dev.c

@@ -1661,7 +1661,7 @@ int dev_queue_xmit(struct sk_buff *skb)
 		q = dev->qdisc;
 		if (q->enqueue) {
 			/* reset queue_mapping to zero */
-			skb->queue_mapping = 0;
+			skb_set_queue_mapping(skb, 0);
 			rc = q->enqueue(skb, q);
 			qdisc_run(dev);
 			spin_unlock(&dev->queue_lock);

net/core/pktgen.c

@@ -2603,8 +2603,7 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
 	skb->network_header = skb->tail;
 	skb->transport_header = skb->network_header + sizeof(struct iphdr);
 	skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
-	skb->queue_mapping = pkt_dev->cur_queue_map;
-
+	skb_set_queue_mapping(skb, pkt_dev->cur_queue_map);
 	iph = ip_hdr(skb);
 	udph = udp_hdr(skb);
 
@@ -2941,8 +2940,7 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
 	skb->network_header = skb->tail;
 	skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
 	skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
-	skb->queue_mapping = pkt_dev->cur_queue_map;
-
+	skb_set_queue_mapping(skb, pkt_dev->cur_queue_map);
 	iph = ipv6_hdr(skb);
 	udph = udp_hdr(skb);