---

yaml
---
r: 40047
b: refs/heads/master
c: 5175c37
h: refs/heads/master
i:
  40045: 1e25399
  40043: f98eb6d
  40039: ceb9549
  40031: 18b265a
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9ce8ade015a3f82dbdf856df7a685878dd1cc0e1
+refs/heads/master: 5175c3786c244f8b689854db24c9e79b1c6a084f

trunk/drivers/net/loopback.c

@@ -58,7 +58,11 @@
 #include <linux/tcp.h>
 #include <linux/percpu.h>
 
-static DEFINE_PER_CPU(struct net_device_stats, loopback_stats);
+struct pcpu_lstats {
+	unsigned long packets;
+	unsigned long bytes;
+};
+static DEFINE_PER_CPU(struct pcpu_lstats, pcpu_lstats);
 
 #define LOOPBACK_OVERHEAD (128 + MAX_HEADER + 16 + 16)
 
@@ -128,7 +132,7 @@ static void emulate_large_send_offload(struct sk_buff *skb)
  */
 static int loopback_xmit(struct sk_buff *skb, struct net_device *dev)
 {
-	struct net_device_stats *lb_stats;
+	struct pcpu_lstats *lb_stats;
 
 	skb_orphan(skb);
 
@@ -149,11 +153,9 @@ static int loopback_xmit(struct sk_buff *skb, struct net_device *dev)
 #endif
 	dev->last_rx = jiffies;
 
-	lb_stats = &per_cpu(loopback_stats, get_cpu());
-	lb_stats->rx_bytes += skb->len;
-	lb_stats->tx_bytes = lb_stats->rx_bytes;
-	lb_stats->rx_packets++;
-	lb_stats->tx_packets = lb_stats->rx_packets;
+	lb_stats = &per_cpu(pcpu_lstats, get_cpu());
+	lb_stats->bytes += skb->len;
+	lb_stats->packets++;
 	put_cpu();
 
 	netif_rx(skb);
@@ -166,20 +168,21 @@ static struct net_device_stats loopback_stats;
 static struct net_device_stats *get_stats(struct net_device *dev)
 {
 	struct net_device_stats *stats = &loopback_stats;
+	unsigned long bytes = 0;
+	unsigned long packets = 0;
 	int i;
 
-	memset(stats, 0, sizeof(struct net_device_stats));
-
 	for_each_possible_cpu(i) {
-		struct net_device_stats *lb_stats;
+		const struct pcpu_lstats *lb_stats;
 
-		lb_stats = &per_cpu(loopback_stats, i);
-		stats->rx_bytes   += lb_stats->rx_bytes;
-		stats->tx_bytes   += lb_stats->tx_bytes;
-		stats->rx_packets += lb_stats->rx_packets;
-		stats->tx_packets += lb_stats->tx_packets;
+		lb_stats = &per_cpu(pcpu_lstats, i);
+		bytes   += lb_stats->bytes;
+		packets += lb_stats->packets;
 	}
-
+	stats->rx_packets = packets;
+	stats->tx_packets = packets;
+	stats->rx_bytes = bytes;
+	stats->tx_bytes = bytes;
 	return stats;
 }