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Commit 6777ae80 authored by David S. Miller's avatar David S. Miller
Browse files

Merge tag 'batadv-net-for-davem-20160914' of git://git.open-mesh.org/linux-merge 



Simon Wunderlich says:

====================
Here are two batman-adv bugfix patches:

 - Fix reference counting for last_bonding_candidate, by Sven Eckelmann

 - Fix head room reservation for ELP packets, by Linus Luessing
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 2a292822 1e5d343b

net/batman-adv/bat_v_elp.c

+1 −1
Original line number Diff line number Diff line
@@ -335,7 +335,7 @@ int batadv_v_elp_iface_enable(struct batadv_hard_iface *hard_iface) 
		goto out;



	skb_reserve(hard_iface->bat_v.elp_skb, ETH_HLEN + NET_IP_ALIGN);

	elp_buff = skb_push(hard_iface->bat_v.elp_skb, BATADV_ELP_HLEN);

	elp_buff = skb_put(hard_iface->bat_v.elp_skb, BATADV_ELP_HLEN);

	elp_packet = (struct batadv_elp_packet *)elp_buff;

	memset(elp_packet, 0, BATADV_ELP_HLEN);

net/batman-adv/routing.c

+27 −1
Original line number Diff line number Diff line
@@ -469,6 +469,29 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv, 
	return 0;

}



/**

 * batadv_last_bonding_get - Get last_bonding_candidate of orig_node

 * @orig_node: originator node whose last bonding candidate should be retrieved

 *

 * Return: last bonding candidate of router or NULL if not found

 *

 * The object is returned with refcounter increased by 1.

 */

static struct batadv_orig_ifinfo *

batadv_last_bonding_get(struct batadv_orig_node *orig_node)

{

	struct batadv_orig_ifinfo *last_bonding_candidate;



	spin_lock_bh(&orig_node->neigh_list_lock);

	last_bonding_candidate = orig_node->last_bonding_candidate;



	if (last_bonding_candidate)

		kref_get(&last_bonding_candidate->refcount);

	spin_unlock_bh(&orig_node->neigh_list_lock);



	return last_bonding_candidate;

}



/**

 * batadv_last_bonding_replace - Replace last_bonding_candidate of orig_node

 * @orig_node: originator node whose bonding candidates should be replaced
@@ -539,7 +562,7 @@ batadv_find_router(struct batadv_priv *bat_priv, 
	 * router - obviously there are no other candidates.

	 */

	rcu_read_lock();

	last_candidate = orig_node->last_bonding_candidate;

	last_candidate = batadv_last_bonding_get(orig_node);

	if (last_candidate)

		last_cand_router = rcu_dereference(last_candidate->router);
@@ -631,6 +654,9 @@ batadv_find_router(struct batadv_priv *bat_priv, 
		batadv_orig_ifinfo_put(next_candidate);

	}



	if (last_candidate)

		batadv_orig_ifinfo_put(last_candidate);



	return router;

}