cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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multicast.h (2909B)

      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 */
     18enum batadv_forw_mode {
     19	/**
     20	 * @BATADV_FORW_ALL: forward the packet to all nodes (currently via
     21	 *  classic flooding)
     22	 */
     23	BATADV_FORW_ALL,
     24
     25	/**
     26	 * @BATADV_FORW_SOME: forward the packet to some nodes (currently via
     27	 *  a multicast-to-unicast conversion and the BATMAN unicast routing
     28	 *  protocol)
     29	 */
     30	BATADV_FORW_SOME,
     31
     32	/**
     33	 * @BATADV_FORW_SINGLE: forward the packet to a single node (currently
     34	 *  via the BATMAN unicast routing protocol)
     35	 */
     36	BATADV_FORW_SINGLE,
     37
     38	/** @BATADV_FORW_NONE: don't forward, drop it */
     39	BATADV_FORW_NONE,
     40};
     41
     42#ifdef CONFIG_BATMAN_ADV_MCAST
     43
     44enum batadv_forw_mode
     45batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
     46		       struct batadv_orig_node **mcast_single_orig,
     47		       int *is_routable);
     48
     49int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv,
     50				struct sk_buff *skb,
     51				unsigned short vid,
     52				struct batadv_orig_node *orig_node);
     53
     54int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
     55			   unsigned short vid, int is_routable);
     56
     57void batadv_mcast_init(struct batadv_priv *bat_priv);
     58
     59int batadv_mcast_mesh_info_put(struct sk_buff *msg,
     60			       struct batadv_priv *bat_priv);
     61
     62int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
     63
     64void batadv_mcast_free(struct batadv_priv *bat_priv);
     65
     66void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
     67
     68#else
     69
     70static inline enum batadv_forw_mode
     71batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
     72		       struct batadv_orig_node **mcast_single_orig,
     73		       int *is_routable)
     74{
     75	return BATADV_FORW_ALL;
     76}
     77
     78static inline int
     79batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv,
     80			    struct sk_buff *skb,
     81			    unsigned short vid,
     82			    struct batadv_orig_node *orig_node)
     83{
     84	kfree_skb(skb);
     85	return NET_XMIT_DROP;
     86}
     87
     88static inline int
     89batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
     90		       unsigned short vid, int is_routable)
     91{
     92	kfree_skb(skb);
     93	return NET_XMIT_DROP;
     94}
     95
     96static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
     97{
     98	return 0;
     99}
    100
    101static inline int
    102batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
    103{
    104	return 0;
    105}
    106
    107static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
    108					  struct netlink_callback *cb)
    109{
    110	return -EOPNOTSUPP;
    111}
    112
    113static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
    114{
    115}
    116
    117static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
    118{
    119}
    120
    121#endif /* CONFIG_BATMAN_ADV_MCAST */
    122
    123#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */