batman-adv: Move batadv_sum_counter to soft-interface.c

The function batadv_sum_counter is only used in soft-interface.c and has no
special relevance for main.h.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

1 files changed, 21 insertions, 0 deletions

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 49e16b6..f37c1c7 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -22,6 +22,7 @@
 #include <linux/byteorder/generic.h>
 #include <linux/cache.h>
 #include <linux/compiler.h>
+#include <linux/cpumask.h>
 #include <linux/errno.h>
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
@@ -116,6 +117,26 @@ static int batadv_interface_release(struct net_device *dev)
 	return 0;
 }
 
+/**
+ * batadv_sum_counter - Sum the cpu-local counters for index 'idx'
+ * @bat_priv: the bat priv with all the soft interface information
+ * @idx: index of counter to sum up
+ *
+ * Return: sum of all cpu-local counters
+ */
+static u64 batadv_sum_counter(struct batadv_priv *bat_priv,  size_t idx)
+{
+	u64 *counters, sum = 0;
+	int cpu;
+
+	for_each_possible_cpu(cpu) {
+		counters = per_cpu_ptr(bat_priv->bat_counters, cpu);
+		sum += counters[idx];
+	}
+
+	return sum;
+}
+
 static struct net_device_stats *batadv_interface_stats(struct net_device *dev)
 {
 	struct batadv_priv *bat_priv = netdev_priv(dev);