[B.A.T.M.A.N.] [PATCH 16/19] batman-adv: Forward multicast data in proact_tracking mode

["Linus Lüssing" <linus.luessing@saxnet.de>]

This patch enables the forwarding of multicast data and uses the same
methods for deciding to forward via broad- or unicast(s) as the local
packet encapsulation already did.

Signed-off-by: Linus Lüssing <linus.luessing@saxnet.de>
---
 multicast.c |    2 +-
 multicast.h |    1 +
 routing.c   |    4 ++++
 3 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/batman-adv/multicast.c b/batman-adv/multicast.c
index a8613ef..70184cf 100644
--- a/batman-adv/multicast.c
+++ b/batman-adv/multicast.c
@@ -1241,7 +1241,7 @@ static inline void nexthops_from_table(uint8_t *dest, uint8_t *orig,
 	}
 }
 
-static void route_mcast_packet(struct sk_buff *skb, struct bat_priv *bat_priv)
+void route_mcast_packet(struct sk_buff *skb, struct bat_priv *bat_priv)
 {
 	struct sk_buff *skb1;
 	struct mcast_packet *mcast_packet;
diff --git a/batman-adv/multicast.h b/batman-adv/multicast.h
index 06dd398..6dcf537 100644
--- a/batman-adv/multicast.h
+++ b/batman-adv/multicast.h
@@ -32,6 +32,7 @@ void route_mcast_tracker_packet(
 			int tracker_packet_len, struct bat_priv *bat_priv);
 void purge_mcast_forw_table(struct bat_priv *bat_priv);
 int mcast_forw_table_seq_print_text(struct seq_file *seq, void *offset);
+void route_mcast_packet(struct sk_buff *skb, struct bat_priv *bat_priv);
 int mcast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv);
 int mcast_init(struct bat_priv *bat_priv);
 void mcast_free(struct bat_priv *bat_priv);
diff --git a/batman-adv/routing.c b/batman-adv/routing.c
index b5559c0..512d9ba 100644
--- a/batman-adv/routing.c
+++ b/batman-adv/routing.c
@@ -1512,6 +1512,7 @@ out:
 
 int recv_mcast_packet(struct sk_buff *skb, struct batman_if *recv_if)
 {
+	struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
 	struct ethhdr *ethhdr;
 	MC_LIST *mc_entry;
 	int ret = 1;
@@ -1522,6 +1523,9 @@ int recv_mcast_packet(struct sk_buff *skb, struct batman_if *recv_if)
 	    check_broadcast_packet(skb, hdr_size) < 0)
 		return NET_RX_DROP;
 
+	/* forward multicast packet if necessary */
+	route_mcast_packet(skb, bat_priv);
+
 	ethhdr = (struct ethhdr *)(skb->data + sizeof(struct mcast_packet));
 
 	/* multicast for me? */
-- 
1.7.2.3