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batman-adv: rename gw_deselect() to gw_reselect()

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The function batadv_gw_deselect() is actually not deselecting
anything. It is just informing the GW code to perform a
re-election procedure when possible.
The current gateway is not being touched at all and therefore
the name of this function is rather misleading.

Rename it to batadv_gw_reselect() to batadv_gw_reselect()
to make its behaviour easier to grasp.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
This commit is contained in:
Antonio Quartulli 2013-11-04 20:59:41 +01:00 committed by Antonio Quartulli
parent f316318157
commit 4e820e72db
4 changed files with 29 additions and 18 deletions
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35
net/batman-adv/gateway_client.c
View File

@ -103,7 +103,18 @@ static void batadv_gw_select(struct batadv_priv *bat_priv,
spin_unlock_bh(&bat_priv->gw.list_lock);
}
void batadv_gw_deselect(struct batadv_priv *bat_priv)
/**
* batadv_gw_reselect - force a gateway reselection
* @bat_priv: the bat priv with all the soft interface information
*
* Set a flag to remind the GW component to perform a new gateway reselection.
* However this function does not ensure that the current gateway is going to be
* deselected. The reselection mechanism may elect the same gateway once again.
*
* This means that invoking batadv_gw_reselect() does not guarantee a gateway
* change and therefore a uevent is not necessarily expected.
*/
void batadv_gw_reselect(struct batadv_priv *bat_priv)
{
atomic_set(&bat_priv->gw.reselect, 1);
}
@ -242,7 +253,7 @@ void batadv_gw_election(struct batadv_priv *bat_priv)
router = batadv_orig_node_get_router(next_gw->orig_node);
if (!router) {
batadv_gw_deselect(bat_priv);
batadv_gw_reselect(bat_priv);
goto out;
}
}
@ -294,11 +305,11 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv,
curr_gw_orig = batadv_gw_get_selected_orig(bat_priv);
if (!curr_gw_orig)
goto deselect;
goto reselect;
router_gw = batadv_orig_node_get_router(curr_gw_orig);
if (!router_gw)
goto deselect;
goto reselect;
/* this node already is the gateway */
if (curr_gw_orig == orig_node)
@ -326,8 +337,8 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv,
"Restarting gateway selection: better gateway found (tq curr: %i, tq new: %i)\n",
gw_tq_avg, orig_tq_avg);
deselect:
batadv_gw_deselect(bat_priv);
reselect:
batadv_gw_reselect(bat_priv);
out:
if (curr_gw_orig)
batadv_orig_node_free_ref(curr_gw_orig);
@ -457,7 +468,7 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
*/
curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
if (gw_node == curr_gw)
batadv_gw_deselect(bat_priv);
batadv_gw_reselect(bat_priv);
}
out:
@ -483,7 +494,7 @@ void batadv_gw_node_purge(struct batadv_priv *bat_priv)
struct batadv_gw_node *gw_node, *curr_gw;
struct hlist_node *node_tmp;
unsigned long timeout = msecs_to_jiffies(2 * BATADV_PURGE_TIMEOUT);
int do_deselect = 0;
int do_reselect = 0;
curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
@ -497,7 +508,7 @@ void batadv_gw_node_purge(struct batadv_priv *bat_priv)
continue;
if (curr_gw == gw_node)
do_deselect = 1;
do_reselect = 1;
hlist_del_rcu(&gw_node->list);
batadv_gw_node_free_ref(gw_node);
@ -505,9 +516,9 @@ void batadv_gw_node_purge(struct batadv_priv *bat_priv)
spin_unlock_bh(&bat_priv->gw.list_lock);
/* gw_deselect() needs to acquire the gw_list_lock */
if (do_deselect)
batadv_gw_deselect(bat_priv);
/* gw_reselect() needs to acquire the gw_list_lock */
if (do_reselect)
batadv_gw_reselect(bat_priv);
if (curr_gw)
batadv_gw_node_free_ref(curr_gw);

2
net/batman-adv/gateway_client.h
View File

@ -19,7 +19,7 @@
#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_reselect(struct batadv_priv *bat_priv);
void batadv_gw_election(struct batadv_priv *bat_priv);
struct batadv_orig_node *
batadv_gw_get_selected_orig(struct batadv_priv *bat_priv);

2
net/batman-adv/gateway_common.c
View File

@ -162,7 +162,7 @@ ssize_t batadv_gw_bandwidth_set(struct net_device *net_dev, char *buff,
if ((down_curr == down_new) && (up_curr == up_new))
return count;
batadv_gw_deselect(bat_priv);
batadv_gw_reselect(bat_priv);
batadv_info(net_dev,
"Changing gateway bandwidth from: '%u.%u/%u.%u MBit' to: '%u.%u/%u.%u MBit'\n",
down_curr / 10, down_curr % 10, up_curr / 10, up_curr % 10,

8
net/batman-adv/sysfs.c
View File

@ -327,10 +327,10 @@ static ssize_t batadv_show_bat_algo(struct kobject *kobj,
return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name);
}
static void batadv_post_gw_deselect(struct net_device *net_dev)
static void batadv_post_gw_reselect(struct net_device *net_dev)
{
struct batadv_priv *bat_priv = netdev_priv(net_dev);
batadv_gw_deselect(bat_priv);
batadv_gw_reselect(bat_priv);
}
static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr,
@ -415,7 +415,7 @@ static ssize_t batadv_store_gw_mode(struct kobject *kobj,
* client mode re-activation. This is operation is performed in
* batadv_gw_check_client_stop().
*/
batadv_gw_deselect(bat_priv);
batadv_gw_reselect(bat_priv);
/* always call batadv_gw_check_client_stop() before changing the gateway
* state
*/
@ -468,7 +468,7 @@ BATADV_ATTR_SIF_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * BATADV_JITTER,
BATADV_ATTR_SIF_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, BATADV_TQ_MAX_VALUE,
NULL);
BATADV_ATTR_SIF_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, BATADV_TQ_MAX_VALUE,
batadv_post_gw_deselect);
batadv_post_gw_reselect);
static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
batadv_store_gw_bwidth);
#ifdef CONFIG_BATMAN_ADV_DEBUG