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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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32e727449c
With this patch multicast packets with a limited number of destinations (current default: 16) will be split and transmitted by the originator as individual unicast transmissions. Wifi broadcasts with their low bitrate are still a costly undertaking. In a mesh network this cost multiplies with the overall size of the mesh network. Therefore using multiple unicast transmissions instead of broadcast flooding is almost always less burdensome for the mesh network. The maximum amount of unicast packets can be configured via the newly introduced multicast_fanout parameter. If this limit is exceeded distribution will fall back to classic broadcast flooding. The multicast-to-unicast conversion is performed on the initial multicast sender node and counts on a final destination node, mesh-wide basis (and not next hop, neighbor node basis). Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
62 lines
2.5 KiB
C
62 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2007-2019 B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich, Antonio Quartulli
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*/
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#ifndef _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
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#define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
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#include "main.h"
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#include <linux/types.h>
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struct netlink_callback;
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struct net_device;
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struct seq_file;
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struct sk_buff;
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int batadv_tt_init(struct batadv_priv *bat_priv);
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bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr,
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unsigned short vid, int ifindex, u32 mark);
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u16 batadv_tt_local_remove(struct batadv_priv *bat_priv,
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const u8 *addr, unsigned short vid,
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const char *message, bool roaming);
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int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset);
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int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
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int batadv_tt_local_dump(struct sk_buff *msg, struct netlink_callback *cb);
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int batadv_tt_global_dump(struct sk_buff *msg, struct netlink_callback *cb);
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void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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s32 match_vid, const char *message);
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struct batadv_tt_global_entry *
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batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr,
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unsigned short vid);
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void batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry);
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int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
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const u8 *addr, unsigned short vid);
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struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv,
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const u8 *src, const u8 *addr,
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unsigned short vid);
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void batadv_tt_free(struct batadv_priv *bat_priv);
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bool batadv_is_my_client(struct batadv_priv *bat_priv, const u8 *addr,
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unsigned short vid);
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bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, u8 *src, u8 *dst,
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unsigned short vid);
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void batadv_tt_local_commit_changes(struct batadv_priv *bat_priv);
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bool batadv_tt_global_client_is_roaming(struct batadv_priv *bat_priv,
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u8 *addr, unsigned short vid);
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bool batadv_tt_local_client_is_roaming(struct batadv_priv *bat_priv,
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u8 *addr, unsigned short vid);
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void batadv_tt_local_resize_to_mtu(struct net_device *soft_iface);
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bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv,
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struct batadv_orig_node *orig_node,
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const unsigned char *addr,
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unsigned short vid);
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bool batadv_tt_global_is_isolated(struct batadv_priv *bat_priv,
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const u8 *addr, unsigned short vid);
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int batadv_tt_cache_init(void);
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void batadv_tt_cache_destroy(void);
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#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */
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