/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2014-2020 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> /** * enum batadv_forw_mode - the way a packet should be forwarded as */ enum batadv_forw_mode { /** * @BATADV_FORW_ALL: forward the packet to all nodes (currently via * classic flooding) */ BATADV_FORW_ALL, /** * @BATADV_FORW_SOME: forward the packet to some nodes (currently via * a multicast-to-unicast conversion and the BATMAN unicast routing * protocol) */ BATADV_FORW_SOME, /** * @BATADV_FORW_SINGLE: forward the packet to a single node (currently * via the BATMAN unicast routing protocol) */ BATADV_FORW_SINGLE, /** @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, struct batadv_orig_node **mcast_single_orig); int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv, struct sk_buff *skb, unsigned short vid, struct batadv_orig_node *orig_node); int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, unsigned short vid); 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); #else static inline enum batadv_forw_mode batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, struct batadv_orig_node **mcast_single_orig) { return BATADV_FORW_ALL; } static inline int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv, struct sk_buff *skb, unsigned short vid, struct batadv_orig_node *orig_node) { kfree_skb(skb); return NET_XMIT_DROP; } static inline int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, unsigned short vid) { 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) { } #endif /* CONFIG_BATMAN_ADV_MCAST */ #endif /* _NET_BATMAN_ADV_MULTICAST_H_ */