1 files changed, 125 insertions, 0 deletions
diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h
new file mode 100644
index 000000000..d97ee51d2
--- /dev/null
+++ b/net/batman-adv/multicast.h
@@ -0,0 +1,125 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) B.A.T.M.A.N. contributors:
+ *
+ * Linus Lüssing
+ */
+
+#ifndef _NET_BATMAN_ADV_MULTICAST_H_
+#define _NET_BATMAN_ADV_MULTICAST_H_
+
+#include "main.h"
+
+#include <linux/netlink.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+
+/**
+ * enum batadv_forw_mode - the way a packet should be forwarded as
+ */
+enum batadv_forw_mode {
+	/**
+	 * @BATADV_FORW_BCAST: forward the packet to all nodes via a batman-adv
+	 *  broadcast packet
+	 */
+	BATADV_FORW_BCAST,
+
+	/**
+	 * @BATADV_FORW_UCASTS: forward the packet to some nodes via one
+	 *  or more batman-adv unicast packets
+	 */
+	BATADV_FORW_UCASTS,
+
+	/**
+	 * @BATADV_FORW_MCAST: forward the packet to some nodes via a
+	 *  batman-adv multicast packet
+	 */
+	BATADV_FORW_MCAST,
+
+	/** @BATADV_FORW_NONE: don't forward, drop it */
+	BATADV_FORW_NONE,
+};
+
+#ifdef CONFIG_BATMAN_ADV_MCAST
+
+enum batadv_forw_mode
+batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		       unsigned short vid, int *is_routable);
+
+int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
+			   unsigned short vid, int is_routable);
+
+void batadv_mcast_init(struct batadv_priv *bat_priv);
+
+int batadv_mcast_mesh_info_put(struct sk_buff *msg,
+			       struct batadv_priv *bat_priv);
+
+int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
+
+void batadv_mcast_free(struct batadv_priv *bat_priv);
+
+void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
+
+/* multicast_forw.c */
+
+int batadv_mcast_forw_tracker_tvlv_handler(struct batadv_priv *bat_priv,
+					   struct sk_buff *skb);
+
+unsigned int batadv_mcast_forw_packet_hdrlen(unsigned int num_dests);
+
+bool batadv_mcast_forw_push(struct batadv_priv *bat_priv, struct sk_buff *skb,
+			    unsigned short vid, int is_routable, int count);
+
+int batadv_mcast_forw_mcsend(struct batadv_priv *bat_priv, struct sk_buff *skb);
+
+#else
+
+static inline enum batadv_forw_mode
+batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		       unsigned short vid, int *is_routable)
+{
+	return BATADV_FORW_BCAST;
+}
+
+static inline int
+batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		       unsigned short vid, int is_routable)
+{
+	kfree_skb(skb);
+	return NET_XMIT_DROP;
+}
+
+static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
+{
+	return 0;
+}
+
+static inline int
+batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
+{
+	return 0;
+}
+
+static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
+					  struct netlink_callback *cb)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
+{
+}
+
+static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
+{
+}
+
+static inline int batadv_mcast_forw_mcsend(struct batadv_priv *bat_priv,
+					   struct sk_buff *skb)
+{
+	kfree_skb(skb);
+	return NET_XMIT_DROP;
+}
+
+#endif /* CONFIG_BATMAN_ADV_MCAST */
+
+#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */