Repository : ssh://git@open-mesh.org/batman-adv
On branch : master
>---------------------------------------------------------------
commit 2bde624fc235deff03efde1caf98962da0127a40
Author: Antonio Quartulli <antonio(a)open-mesh.com>
Date: Sat Jul 13 00:06:00 2013 +0200
batman-adv: send GW_DEL event when the gw client mode is deselected
Whenever the GW client mode is deselected, a DEL event has
to be sent in order to tell userspace that the current
gateway has been lost. Send the uevent on state change only
if a gateway was currently selected.
Reported-by: Marek Lindner <lindner_marek(a)yahoo.de>
Signed-off-by: Antonio Quartulli <antonio(a)open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek(a)yahoo.de>
>---------------------------------------------------------------
2bde624fc235deff03efde1caf98962da0127a40
gateway_client.c | 27 +++++++++++++++++++++++++++
gateway_client.h | 1 +
sysfs.c | 4 ++++
3 files changed, 32 insertions(+)
diff --git a/gateway_client.c b/gateway_client.c
index 588d27e..edf61da 100644
--- a/gateway_client.c
+++ b/gateway_client.c
@@ -188,6 +188,33 @@ next:
return curr_gw;
}
+/**
+ * batadv_gw_check_client_stop - check if client mode has been switched off
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * This function assumes the caller has checked that the gw state *is actually
+ * changing*. This function is not supposed to be called when there is no state
+ * change.
+ */
+void batadv_gw_check_client_stop(struct batadv_priv *bat_priv)
+{
+ struct batadv_gw_node *curr_gw;
+
+ if (atomic_read(&bat_priv->gw_mode) != BATADV_GW_MODE_CLIENT)
+ return;
+
+ curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
+ if (!curr_gw)
+ return;
+
+ /* if batman-adv is switching the gw client mode off and a gateway was
+ * already selected, send a DEL uevent
+ */
+ batadv_throw_uevent(bat_priv, BATADV_UEV_GW, BATADV_UEV_DEL, NULL);
+
+ batadv_gw_node_free_ref(curr_gw);
+}
+
void batadv_gw_election(struct batadv_priv *bat_priv)
{
struct batadv_gw_node *curr_gw = NULL, *next_gw = NULL;
diff --git a/gateway_client.h b/gateway_client.h
index 7ef955a..b235cbf 100644
--- a/gateway_client.h
+++ b/gateway_client.h
@@ -20,6 +20,7 @@
#ifndef _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
#define _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
+void batadv_gw_check_client_stop(struct batadv_priv *bat_priv);
void batadv_gw_deselect(struct batadv_priv *bat_priv);
void batadv_gw_election(struct batadv_priv *bat_priv);
struct batadv_orig_node *
diff --git a/sysfs.c b/sysfs.c
index 6ec145d..096b511 100644
--- a/sysfs.c
+++ b/sysfs.c
@@ -409,6 +409,10 @@ static ssize_t batadv_store_gw_mode(struct kobject *kobj,
curr_gw_mode_str, buff);
batadv_gw_deselect(bat_priv);
+ /* always call batadv_gw_check_client_stop() before changing the gateway
+ * state
+ */
+ batadv_gw_check_client_stop(bat_priv);
atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp);
batadv_gw_tvlv_container_update(bat_priv);
return count;