Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge

Antonio Quartulli says:

====================
Included changes:
- remove useless skb size check in batadv_interface_rx
- basic netns support introduced by Andrew Lunn:
    - prevent virtual interface from changing netns by setting
      NETIF_F_NETNS_LOCAL
    - create virtual interface within the netns of the first
      hard-interface
- introduce detection of complex bridge loops and report event
  to the user (via udev) when the Bridge Loop Avoidance mechanism
  can't prevent them
- minor reference counting bugfixes for the hard_iface object that
  couldn't make it via the net tree
- use kref_get() instead of kref_get_unless_zero() to make reference
  counting bug more visible
- use batadv_compare_eth() all over the code when possible instead of
  plain memcmp()
- minor code cleanup and style adjustments
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 16 deletions

diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 1da8e0e1b18f..678f06865312 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -510,10 +510,10 @@ static u32 batadv_nc_hash_choose(const void *data, u32 size)
  * @node: node in the local table
  * @data2: second object to compare the node to
  *
- * Return: 1 if the two entry are the same, 0 otherwise
+ * Return: true if the two entry are the same, false otherwise
  */
-static int batadv_nc_hash_compare(const struct hlist_node *node,
-				  const void *data2)
+static bool batadv_nc_hash_compare(const struct hlist_node *node,
+				   const void *data2)
 {
 	const struct batadv_nc_path *nc_path1, *nc_path2;
 
@@ -521,15 +521,13 @@ static int batadv_nc_hash_compare(const struct hlist_node *node,
 	nc_path2 = data2;
 
 	/* Return 1 if the two keys are identical */
-	if (memcmp(nc_path1->prev_hop, nc_path2->prev_hop,
-		   sizeof(nc_path1->prev_hop)) != 0)
-		return 0;
+	if (!batadv_compare_eth(nc_path1->prev_hop, nc_path2->prev_hop))
+		return false;
 
-	if (memcmp(nc_path1->next_hop, nc_path2->next_hop,
-		   sizeof(nc_path1->next_hop)) != 0)
-		return 0;
+	if (!batadv_compare_eth(nc_path1->next_hop, nc_path2->next_hop))
+		return false;
 
-	return 1;
+	return true;
 }
 
 /**
@@ -856,8 +854,7 @@ batadv_nc_get_nc_node(struct batadv_priv *bat_priv,
 	if (!nc_node)
 		return NULL;
 
-	if (!kref_get_unless_zero(&orig_neigh_node->refcount))
-		goto free;
+	kref_get(&orig_neigh_node->refcount);
 
 	/* Initialize nc_node */
 	INIT_LIST_HEAD(&nc_node->list);
@@ -884,10 +881,6 @@ batadv_nc_get_nc_node(struct batadv_priv *bat_priv,
 	spin_unlock_bh(lock);
 
 	return nc_node;
-
-free:
-	kfree(nc_node);
-	return NULL;
 }
 
 /**