1 files changed, 31 insertions, 30 deletions

diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c
index ca57ac7d73b2..9001208d1752 100644
--- a/net/batman-adv/gateway_common.c
+++ b/net/batman-adv/gateway_common.c
@@ -1,5 +1,4 @@
-/*
- * Copyright (C) 2009-2012 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2009-2012 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *
@@ -16,7 +15,6 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  * 02110-1301, USA
- *
  */
 
 #include "main.h"
@@ -24,7 +22,7 @@
 #include "gateway_client.h"
 
 /* calculates the gateway class from kbit */
-static void kbit_to_gw_bandwidth(int down, int up, long *gw_srv_class)
+static void batadv_kbit_to_gw_bandwidth(int down, int up, long *gw_srv_class)
 {
 	int mdown = 0, tdown, tup, difference;
 	uint8_t sbit, part;
@@ -59,7 +57,7 @@ static void kbit_to_gw_bandwidth(int down, int up, long *gw_srv_class)
 }
 
 /* returns the up and downspeeds in kbit, calculated from the class */
-void gw_bandwidth_to_kbit(uint8_t gw_srv_class, int *down, int *up)
+void batadv_gw_bandwidth_to_kbit(uint8_t gw_srv_class, int *down, int *up)
 {
 	int sbit = (gw_srv_class & 0x80) >> 7;
 	int dpart = (gw_srv_class & 0x78) >> 3;
@@ -75,8 +73,8 @@ void gw_bandwidth_to_kbit(uint8_t gw_srv_class, int *down, int *up)
 	*up = ((upart + 1) * (*down)) / 8;
 }
 
-static bool parse_gw_bandwidth(struct net_device *net_dev, char *buff,
-			       int *up, int *down)
+static bool batadv_parse_gw_bandwidth(struct net_device *net_dev, char *buff,
+				      int *up, int *down)
 {
 	int ret, multi = 1;
 	char *slash_ptr, *tmp_ptr;
@@ -99,9 +97,9 @@ static bool parse_gw_bandwidth(struct net_device *net_dev, char *buff,
 
 	ret = kstrtol(buff, 10, &ldown);
 	if (ret) {
-		bat_err(net_dev,
-			"Download speed of gateway mode invalid: %s\n",
-			buff);
+		batadv_err(net_dev,
+			   "Download speed of gateway mode invalid: %s\n",
+			   buff);
 		return false;
 	}
 
@@ -124,9 +122,9 @@ static bool parse_gw_bandwidth(struct net_device *net_dev, char *buff,
 
 		ret = kstrtol(slash_ptr + 1, 10, &lup);
 		if (ret) {
-			bat_err(net_dev,
-				"Upload speed of gateway mode invalid: %s\n",
-				slash_ptr + 1);
+			batadv_err(net_dev,
+				   "Upload speed of gateway mode invalid: %s\n",
+				   slash_ptr + 1);
 			return false;
 		}
 
@@ -136,14 +134,15 @@ static bool parse_gw_bandwidth(struct net_device *net_dev, char *buff,
 	return true;
 }
 
-ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count)
+ssize_t batadv_gw_bandwidth_set(struct net_device *net_dev, char *buff,
+				size_t count)
 {
-	struct bat_priv *bat_priv = netdev_priv(net_dev);
+	struct batadv_priv *bat_priv = netdev_priv(net_dev);
 	long gw_bandwidth_tmp = 0;
 	int up = 0, down = 0;
 	bool ret;
 
-	ret = parse_gw_bandwidth(net_dev, buff, &up, &down);
+	ret = batadv_parse_gw_bandwidth(net_dev, buff, &up, &down);
 	if (!ret)
 		goto end;
 
@@ -153,23 +152,25 @@ ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count)
 	if (!up)
 		up = down / 5;
 
-	kbit_to_gw_bandwidth(down, up, &gw_bandwidth_tmp);
+	batadv_kbit_to_gw_bandwidth(down, up, &gw_bandwidth_tmp);
 
-	/**
-	 * the gw bandwidth we guessed above might not match the given
+	/* the gw bandwidth we guessed above might not match the given
 	 * speeds, hence we need to calculate it back to show the number
 	 * that is going to be propagated
-	 **/
-	gw_bandwidth_to_kbit((uint8_t)gw_bandwidth_tmp, &down, &up);
-
-	gw_deselect(bat_priv);
-	bat_info(net_dev,
-		 "Changing gateway bandwidth from: '%i' to: '%ld' (propagating: %d%s/%d%s)\n",
-		 atomic_read(&bat_priv->gw_bandwidth), gw_bandwidth_tmp,
-		 (down > 2048 ? down / 1024 : down),
-		 (down > 2048 ? "MBit" : "KBit"),
-		 (up > 2048 ? up / 1024 : up),
-		 (up > 2048 ? "MBit" : "KBit"));
+	 */
+	batadv_gw_bandwidth_to_kbit((uint8_t)gw_bandwidth_tmp, &down, &up);
+
+	if (atomic_read(&bat_priv->gw_bandwidth) == gw_bandwidth_tmp)
+		return count;
+
+	batadv_gw_deselect(bat_priv);
+	batadv_info(net_dev,
+		    "Changing gateway bandwidth from: '%i' to: '%ld' (propagating: %d%s/%d%s)\n",
+		    atomic_read(&bat_priv->gw_bandwidth), gw_bandwidth_tmp,
+		    (down > 2048 ? down / 1024 : down),
+		    (down > 2048 ? "MBit" : "KBit"),
+		    (up > 2048 ? up / 1024 : up),
+		    (up > 2048 ? "MBit" : "KBit"));
 
 	atomic_set(&bat_priv->gw_bandwidth, gw_bandwidth_tmp);