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batman-adv: initialize ELP orig address on secondary interfaces

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This fix prevents nodes to wrongly create a 00:00:00:00:00:00 originator
which can potentially interfere with the rest of the neighbor statistics.

Fixes: d6f94d91f7 ("batman-adv: ELP - adding basic infrastructure")
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
This commit is contained in:
Marek Lindner 2016-05-07 19:54:17 +08:00 committed by Antonio Quartulli
parent e123705e58
commit ebe24cea95
3 changed files with 34 additions and 9 deletions
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10
net/batman-adv/bat_v.c
View File

@ -40,6 +40,16 @@
static void batadv_v_iface_activate(struct batadv_hard_iface *hard_iface)
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
struct batadv_hard_iface *primary_if;
primary_if = batadv_primary_if_get_selected(bat_priv);
if (primary_if) {
batadv_v_elp_iface_activate(primary_if, hard_iface);
batadv_hardif_put(primary_if);
}
/* B.A.T.M.A.N. V does not use any queuing mechanism, therefore it can
* set the interface as ACTIVE right away, without any risk of race
* condition

31
net/batman-adv/bat_v_elp.c
View File

@ -376,6 +376,27 @@ void batadv_v_elp_iface_disable(struct batadv_hard_iface *hard_iface)
hard_iface->bat_v.elp_skb = NULL;
}
/**
* batadv_v_elp_iface_activate - update the ELP buffer belonging to the given
* hard-interface
* @primary_iface: the new primary interface
* @hard_iface: interface holding the to-be-updated buffer
*/
void batadv_v_elp_iface_activate(struct batadv_hard_iface *primary_iface,
struct batadv_hard_iface *hard_iface)
{
struct batadv_elp_packet *elp_packet;
struct sk_buff *skb;
if (!hard_iface->bat_v.elp_skb)
return;
skb = hard_iface->bat_v.elp_skb;
elp_packet = (struct batadv_elp_packet *)skb->data;
ether_addr_copy(elp_packet->orig,
primary_iface->net_dev->dev_addr);
}
/**
* batadv_v_elp_primary_iface_set - change internal data to reflect the new
* primary interface
@ -384,8 +405,6 @@ void batadv_v_elp_iface_disable(struct batadv_hard_iface *hard_iface)
void batadv_v_elp_primary_iface_set(struct batadv_hard_iface *primary_iface)
{
struct batadv_hard_iface *hard_iface;
struct batadv_elp_packet *elp_packet;
struct sk_buff *skb;
/* update orig field of every elp iface belonging to this mesh */
rcu_read_lock();
@ -393,13 +412,7 @@ void batadv_v_elp_primary_iface_set(struct batadv_hard_iface *primary_iface)
if (primary_iface->soft_iface != hard_iface->soft_iface)
continue;
if (!hard_iface->bat_v.elp_skb)
continue;
skb = hard_iface->bat_v.elp_skb;
elp_packet = (struct batadv_elp_packet *)skb->data;
ether_addr_copy(elp_packet->orig,
primary_iface->net_dev->dev_addr);
batadv_v_elp_iface_activate(primary_iface, hard_iface);
}
rcu_read_unlock();
}

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

@ -25,6 +25,8 @@ struct work_struct;
int batadv_v_elp_iface_enable(struct batadv_hard_iface *hard_iface);
void batadv_v_elp_iface_disable(struct batadv_hard_iface *hard_iface);
void batadv_v_elp_iface_activate(struct batadv_hard_iface *primary_iface,
struct batadv_hard_iface *hard_iface);
void batadv_v_elp_primary_iface_set(struct batadv_hard_iface *primary_iface);
int batadv_v_elp_packet_recv(struct sk_buff *skb,
struct batadv_hard_iface *if_incoming);