Re: [B.A.T.M.A.N.] batman-adv not selecting a gateway when using "client 1" through uci config

[Marek Lindner <lindner_marek@yahoo.de>]

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On Friday, July 20, 2012 04:24:11 Nicolás Echániz wrote:
> there's no gateway being selected until I manually run:
> # batctl gw_mode client 1
> (which was te current mode anyway)
> on each client.
> 
> In fact, connected computers are not being served DHCP offers because of
> this.
> 
> Is this some known behavior or just something I overlooked?

In fact you managed to uncover a regression that was overlooked for quite some 
time. Guess gw selection class 1 is rarely used.  :-)

Can you apply the attached patch and verify that it fixes the problem ? Here 
in my test setup it does.

Regards,
Marek

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From 0a29f3a348c68f375585e25153da0f0a061fd71d Mon Sep 17 00:00:00 2001
From: Marek Lindner <lindner_marek@yahoo.de>
Date: Sun, 22 Jul 2012 13:04:48 +0200
Subject: [PATCH] batman-adv: select an internet gateway if none was chosen
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This is a regression introduced by: 6a17ecc4603be7f065c38b288d038a0082bbf21d

Reported-by: Nicolás Echániz <nicoechaniz@codigosur.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 gateway_client.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/gateway_client.c b/gateway_client.c
index 47f7186..dace001 100644
--- a/gateway_client.c
+++ b/gateway_client.c
@@ -197,11 +197,11 @@ void gw_election(struct bat_priv *bat_priv)
 	if (atomic_read(&bat_priv->gw_mode) != GW_MODE_CLIENT)
 		goto out;
 
-	if (!atomic_dec_not_zero(&bat_priv->gw_reselect))
-		goto out;
-
 	curr_gw = gw_get_selected_gw_node(bat_priv);
 
+	if (!atomic_dec_not_zero(&bat_priv->gw_reselect) && curr_gw)
+		goto out;
+
 	next_gw = gw_get_best_gw_node(bat_priv);
 
 	if (curr_gw == next_gw)
-- 
1.7.9.1