Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Conflicts:
	net/batman-adv/bridge_loop_avoidance.c
	net/batman-adv/bridge_loop_avoidance.h
	net/batman-adv/soft-interface.c
	net/mac80211/mlme.c

With merge help from Antonio Quartulli (batman-adv) and
Stephen Rothwell (drivers/net/usb/qmi_wwan.c).

The net/mac80211/mlme.c conflict seemed easy enough, accounting for a
conversion to some new tracing macros.

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

1 files changed, 11 insertions, 4 deletions

diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 3483e4035cbe..6705d35b17ce 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -1381,6 +1381,7 @@ void batadv_bla_free(struct batadv_priv *bat_priv)
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: the frame to be checked
  * @vid: the VLAN ID of the frame
+ * @is_bcast: the packet came in a broadcast packet type.
  *
  * bla_rx avoidance checks if:
  *  * we have to race for a claim
@@ -1390,7 +1391,8 @@ void batadv_bla_free(struct batadv_priv *bat_priv)
  * returns 1, otherwise it returns 0 and the caller shall further
  * process the skb.
  */
-int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
+int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
+                  bool is_bcast)
 {
         struct ethhdr *ethhdr;
         struct batadv_claim search_claim, *claim = NULL;
@@ -1409,7 +1411,7 @@ int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
 
         if (unlikely(atomic_read(&bat_priv->bla_num_requests)))
                 /* don't allow broadcasts while requests are in flight */
-                if (is_multicast_ether_addr(ethhdr->h_dest))
+                if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast)
                         goto handled;
 
         memcpy(search_claim.addr, ethhdr->h_source, ETH_ALEN);
@@ -1435,8 +1437,13 @@ int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
         }
 
         /* if it is a broadcast ... */
-        if (is_multicast_ether_addr(ethhdr->h_dest)) {
-                /* ... drop it. the responsible gateway is in charge. */
+        if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast) {
+                /* ... drop it. the responsible gateway is in charge.
+                 *
+                 * We need to check is_bcast because with the gateway
+                 * feature, broadcasts (like DHCP requests) may be sent
+                 * using a unicast packet type.
+                 */
                 goto handled;
         } else {
                 /* seems the client considers us as its best gateway.