Repository : ssh://git@open-mesh.org/batman-adv

On branch : master

commit 7644650bb766bd4c7b6be5d97e6b1c3ed93a38d7 Author: Simon Wunderlich simon@open-mesh.com Date: Tue Jun 17 12:16:03 2014 +0200

batman-adv: increase default hop penalty

The default hop penalty is currently set to 15, which is applied like that for multi interface devices (e.g. dual band APs). Single band devices will still use an effective penalty of 30 (hop penalty + wifi penalty).

After receiving reports of too long paths in mesh networks with dual band APs which were fixed by increasing the hop penalty, we'd like to suggest to increase that default value in the default setting as well. We've evaluated that increase in a handful of medium sized mesh networks (5-20 nodes) with single and dual band devices, with changes for the better (shorter routes, higher throughput) or no change at all.

This patch changes the hop penalty to 30, which will give an effective penalty of 60 on single band devices (hop penalty + wifi penalty).

Signed-off-by: Simon Wunderlich simon@open-mesh.com Signed-off-by: Marek Lindner mareklindner@neomailbox.ch

7644650bb766bd4c7b6be5d97e6b1c3ed93a38d7 soft-interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/soft-interface.c b/soft-interface.c index e783afb..9bf382d 100644 --- a/soft-interface.c +++ b/soft-interface.c @@ -757,7 +757,7 @@ static int batadv_softif_init_late(struct net_device *dev) atomic_set(&bat_priv->gw.bandwidth_down, 100); atomic_set(&bat_priv->gw.bandwidth_up, 20); atomic_set(&bat_priv->orig_interval, 1000); - atomic_set(&bat_priv->hop_penalty, 15); + atomic_set(&bat_priv->hop_penalty, 30); #ifdef CONFIG_BATMAN_ADV_DEBUG atomic_set(&bat_priv->log_level, 0); #endif