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, 6 insertions, 0 deletions

diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 99ea9001cf8a..f2f125684ed9 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -26,6 +26,7 @@
 #include <linux/if.h>
 #include <linux/jiffies.h>
 #include <linux/kernel.h>
+#include <linux/kref.h>
 #include <linux/list.h>
 #include <linux/netdevice.h>
 #include <linux/printk.h>
@@ -577,10 +578,15 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
 		if (forw_packet->num_packets >= hard_iface->num_bcasts)
 			continue;
 
+		if (!kref_get_unless_zero(&hard_iface->refcount))
+			continue;
+
 		/* send a copy of the saved skb */
 		skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC);
 		if (skb1)
 			batadv_send_broadcast_skb(skb1, hard_iface);
+
+		batadv_hardif_put(hard_iface);
 	}
 	rcu_read_unlock();