netdev - [PATCH 19/19] batman-adv: only store changed gw

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Date:	Mon, 18 Jun 2012 22:39:23 +0200
From:	Antonio Quartulli <ordex@...istici.org>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, b.a.t.m.a.n@...ts.open-mesh.org,
	Marek Lindner <lindner_marek@...oo.de>,
	Sven Eckelmann <sven@...fation.org>,
	Antonio Quartulli <ordex@...istici.org>
Subject: [PATCH 19/19] batman-adv: only store changed gw_bandwidth values

From: Marek Lindner <lindner_marek@...oo.de>

Signed-off-by: Marek Lindner <lindner_marek@...oo.de>
Signed-off-by: Sven Eckelmann <sven@...fation.org>
Signed-off-by: Antonio Quartulli <ordex@...istici.org>
---
 net/batman-adv/gateway_common.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c
index ca57ac7..6e3b052 100644
--- a/net/batman-adv/gateway_common.c
+++ b/net/batman-adv/gateway_common.c
@@ -162,6 +162,9 @@ ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count)
 	 **/
 	gw_bandwidth_to_kbit((uint8_t)gw_bandwidth_tmp, &down, &up);
 
+	if (atomic_read(&bat_priv->gw_bandwidth) == gw_bandwidth_tmp)
+		return count;
+
 	gw_deselect(bat_priv);
 	bat_info(net_dev,
 		 "Changing gateway bandwidth from: '%i' to: '%ld' (propagating: %d%s/%d%s)\n",
-- 
1.7.9.4

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