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/* 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_ */
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