mirror of https://gitee.com/openkylin/linux.git
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2014-2020 B.A.T.M.A.N. contributors:
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*
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* Linus Lüssing
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*/
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#ifndef _NET_BATMAN_ADV_MULTICAST_H_
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#define _NET_BATMAN_ADV_MULTICAST_H_
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#include "main.h"
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#include <linux/netlink.h>
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#include <linux/skbuff.h>
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/**
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* enum batadv_forw_mode - the way a packet should be forwarded as
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*/
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enum batadv_forw_mode {
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/**
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* @BATADV_FORW_ALL: forward the packet to all nodes (currently via
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* classic flooding)
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*/
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BATADV_FORW_ALL,
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/**
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* @BATADV_FORW_SOME: forward the packet to some nodes (currently via
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* a multicast-to-unicast conversion and the BATMAN unicast routing
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* protocol)
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*/
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BATADV_FORW_SOME,
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/**
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* @BATADV_FORW_SINGLE: forward the packet to a single node (currently
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* via the BATMAN unicast routing protocol)
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*/
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BATADV_FORW_SINGLE,
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/** @BATADV_FORW_NONE: don't forward, drop it */
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BATADV_FORW_NONE,
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};
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#ifdef CONFIG_BATMAN_ADV_MCAST
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enum batadv_forw_mode
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batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
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struct batadv_orig_node **mcast_single_orig);
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int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv,
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struct sk_buff *skb,
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unsigned short vid,
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struct batadv_orig_node *orig_node);
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int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
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unsigned short vid);
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void batadv_mcast_init(struct batadv_priv *bat_priv);
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int batadv_mcast_mesh_info_put(struct sk_buff *msg,
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struct batadv_priv *bat_priv);
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int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
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void batadv_mcast_free(struct batadv_priv *bat_priv);
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void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
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#else
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static inline enum batadv_forw_mode
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batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
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struct batadv_orig_node **mcast_single_orig)
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{
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return BATADV_FORW_ALL;
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}
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static inline int
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batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv,
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struct sk_buff *skb,
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unsigned short vid,
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struct batadv_orig_node *orig_node)
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{
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kfree_skb(skb);
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return NET_XMIT_DROP;
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}
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static inline int
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batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
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unsigned short vid)
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{
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kfree_skb(skb);
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return NET_XMIT_DROP;
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}
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static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
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{
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return 0;
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}
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static inline int
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batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
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{
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return 0;
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}
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static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
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struct netlink_callback *cb)
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{
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return -EOPNOTSUPP;
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}
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static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
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{
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}
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static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
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{
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}
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#endif /* CONFIG_BATMAN_ADV_MCAST */
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#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
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