| /* 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_ */ |