1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (C) B.A.T.M.A.N. contributors: 3 * 4 * Linus Lüssing 5 */ 6 7 #ifndef _NET_BATMAN_ADV_MULTICAST_H_ 8 #define _NET_BATMAN_ADV_MULTICAST_H_ 9 10 #include "main.h" 11 12 #include <linux/netlink.h> 13 #include <linux/skbuff.h> 14 15 /** 16 * enum batadv_forw_mode - the way a packet should be forwarded as 17 */ 18 enum batadv_forw_mode { 19 /** 20 * @BATADV_FORW_BCAST: forward the packet to all nodes via a batman-adv 21 * broadcast packet 22 */ 23 BATADV_FORW_BCAST, 24 25 /** 26 * @BATADV_FORW_UCASTS: forward the packet to some nodes via one 27 * or more batman-adv unicast packets 28 */ 29 BATADV_FORW_UCASTS, 30 31 /** @BATADV_FORW_NONE: don't forward, drop it */ 32 BATADV_FORW_NONE, 33 }; 34 35 #ifdef CONFIG_BATMAN_ADV_MCAST 36 37 enum batadv_forw_mode 38 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, 39 int *is_routable); 40 41 int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, 42 unsigned short vid, int is_routable); 43 44 void batadv_mcast_init(struct batadv_priv *bat_priv); 45 46 int batadv_mcast_mesh_info_put(struct sk_buff *msg, 47 struct batadv_priv *bat_priv); 48 49 int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb); 50 51 void batadv_mcast_free(struct batadv_priv *bat_priv); 52 53 void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node); 54 55 #else 56 57 static inline enum batadv_forw_mode 58 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, 59 int *is_routable) 60 { 61 return BATADV_FORW_BCAST; 62 } 63 64 static inline int 65 batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, 66 unsigned short vid, int is_routable) 67 { 68 kfree_skb(skb); 69 return NET_XMIT_DROP; 70 } 71 72 static inline int batadv_mcast_init(struct batadv_priv *bat_priv) 73 { 74 return 0; 75 } 76 77 static inline int 78 batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv) 79 { 80 return 0; 81 } 82 83 static inline int batadv_mcast_flags_dump(struct sk_buff *msg, 84 struct netlink_callback *cb) 85 { 86 return -EOPNOTSUPP; 87 } 88 89 static inline void batadv_mcast_free(struct batadv_priv *bat_priv) 90 { 91 } 92 93 static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node) 94 { 95 } 96 97 #endif /* CONFIG_BATMAN_ADV_MCAST */ 98 99 #endif /* _NET_BATMAN_ADV_MULTICAST_H_ */ 100