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| author | Antonio Quartulli <antonio@open-mesh.com> | 2013-07-13 00:06:00 +0200 |
|---|---|---|
| committer | Antonio Quartulli <ordex@autistici.org> | 2013-08-28 11:33:00 +0200 |
| commit | c6eaa3f067d6f9fa55fd9645e93ed79411bebdaf (patch) | |
| tree | e5d5136abe4c857cae4b04985c22c38ccbeaca71 | |
| parent | c00a072d3fec446d763e68b50f6f6cfd9e2957e2 (diff) | |
| download | linux-stable-c6eaa3f067d6f9fa55fd9645e93ed79411bebdaf.tar.gz linux-stable-c6eaa3f067d6f9fa55fd9645e93ed79411bebdaf.tar.bz2 linux-stable-c6eaa3f067d6f9fa55fd9645e93ed79411bebdaf.zip | |
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@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
| -rw-r--r-- | net/batman-adv/gateway_client.c | 27 | ||||
| -rw-r--r-- | net/batman-adv/gateway_client.h | 1 | ||||
| -rw-r--r-- | net/batman-adv/sysfs.c | 4 |
3 files changed, 32 insertions, 0 deletions
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c index 7614af31daff..1ce4b8763ef2 100644 --- a/net/batman-adv/gateway_client.c +++ b/net/batman-adv/gateway_client.c @@ -190,6 +190,33 @@ 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/net/batman-adv/gateway_client.h b/net/batman-adv/gateway_client.h index 1037d75da51f..ceef4ebe8bcd 100644 --- a/net/batman-adv/gateway_client.h +++ b/net/batman-adv/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/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index 929e304dacb2..4114b961bc2c 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -385,6 +385,10 @@ 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); return count; } |