batman-adv: change interface_rx to get orig node

In order to understand  where a broadcast packet is coming from and use
this information to detect not yet announced clients, this patch modifies the
interface_rx() function by passing a new argument: the orig node
corresponding to the node that originated the received packet (if known).
This new argument if not NULL for broadcast packets only (other packets does not
have source field).

Signed-off-by: Antonio Quartulli <ordex@autistici.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 03b0763abd2f..7b683e0bd668 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -270,7 +270,7 @@ end:
 
 void batadv_interface_rx(struct net_device *soft_iface,
                          struct sk_buff *skb, struct batadv_hard_iface *recv_if,
-                         int hdr_size)
+                         int hdr_size, struct batadv_orig_node *orig_node)
 {
         struct batadv_priv *bat_priv = netdev_priv(soft_iface);
         struct ethhdr *ethhdr;
@@ -322,6 +322,10 @@ void batadv_interface_rx(struct net_device *soft_iface,
 
         soft_iface->last_rx = jiffies;
 
+        if (orig_node)
+                batadv_tt_add_temporary_global_entry(bat_priv, orig_node,
+                                                     ethhdr->h_source);
+
         if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest))
                 goto dropped;