07afe1ba28
Implement functionality to receive and forward a new TVLV capable multicast packet type. The new batman-adv multicast packet type allows to contain several originator destination addresses within a TVLV. Routers on the way will potentially split the batman-adv multicast packet and adjust its tracker TVLV contents. Routing decisions are still based on the selected BATMAN IV or BATMAN V routing algorithm. So this new batman-adv multicast packet type retains the same loop-free properties. Also a new OGM multicast TVLV flag is introduced to signal to other nodes that we are capable of handling a batman-adv multicast packet and multicast tracker TVLV. And that all of our hard interfaces have an MTU of at least 1280 bytes (IPv6 minimum MTU), as a simple solution for now to avoid MTU issues while forwarding. Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
171 lines
5.0 KiB
C
171 lines
5.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich
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*/
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#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
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#define _NET_BATMAN_ADV_ORIGINATOR_H_
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#include "main.h"
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#include <linux/compiler.h>
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#include <linux/if_ether.h>
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#include <linux/jhash.h>
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#include <linux/kref.h>
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#include <linux/netlink.h>
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#include <linux/skbuff.h>
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#include <linux/types.h>
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bool batadv_compare_orig(const struct hlist_node *node, const void *data2);
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int batadv_originator_init(struct batadv_priv *bat_priv);
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void batadv_originator_free(struct batadv_priv *bat_priv);
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void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
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void batadv_orig_node_release(struct kref *ref);
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struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
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const u8 *addr);
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struct batadv_hardif_neigh_node *
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batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
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const u8 *neigh_addr);
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void batadv_hardif_neigh_release(struct kref *ref);
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struct batadv_neigh_node *
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batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *hard_iface,
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const u8 *neigh_addr);
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void batadv_neigh_node_release(struct kref *ref);
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struct batadv_neigh_node *
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batadv_orig_router_get(struct batadv_orig_node *orig_node,
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const struct batadv_hard_iface *if_outgoing);
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struct batadv_neigh_node *
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batadv_orig_to_router(struct batadv_priv *bat_priv, u8 *orig_addr,
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struct batadv_hard_iface *if_outgoing);
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struct batadv_neigh_ifinfo *
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batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
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struct batadv_hard_iface *if_outgoing);
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struct batadv_neigh_ifinfo *
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batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
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struct batadv_hard_iface *if_outgoing);
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void batadv_neigh_ifinfo_release(struct kref *ref);
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int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb);
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struct batadv_orig_ifinfo *
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batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *if_outgoing);
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struct batadv_orig_ifinfo *
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batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *if_outgoing);
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void batadv_orig_ifinfo_release(struct kref *ref);
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int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb);
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struct batadv_orig_node_vlan *
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batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
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unsigned short vid);
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struct batadv_orig_node_vlan *
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batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
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unsigned short vid);
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void batadv_orig_node_vlan_release(struct kref *ref);
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/**
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* batadv_choose_orig() - Return the index of the orig entry in the hash table
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* @data: mac address of the originator node
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* @size: the size of the hash table
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*
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* Return: the hash index where the object represented by @data should be
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* stored at.
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*/
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static inline u32 batadv_choose_orig(const void *data, u32 size)
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{
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u32 hash = 0;
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hash = jhash(data, ETH_ALEN, hash);
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return hash % size;
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}
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struct batadv_orig_node *
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batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data);
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/**
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* batadv_orig_node_vlan_put() - decrement the refcounter and possibly release
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* the originator-vlan object
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* @orig_vlan: the originator-vlan object to release
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*/
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static inline void
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batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan)
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{
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if (!orig_vlan)
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return;
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kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release);
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}
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/**
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* batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release
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* the neigh_ifinfo
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* @neigh_ifinfo: the neigh_ifinfo object to release
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*/
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static inline void
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batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo)
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{
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if (!neigh_ifinfo)
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return;
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kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release);
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}
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/**
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* batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter
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* and possibly release it
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* @hardif_neigh: hardif neigh neighbor to free
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*/
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static inline void
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batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh)
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{
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if (!hardif_neigh)
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return;
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kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release);
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}
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/**
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* batadv_neigh_node_put() - decrement the neighbors refcounter and possibly
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* release it
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* @neigh_node: neigh neighbor to free
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*/
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static inline void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node)
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{
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if (!neigh_node)
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return;
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kref_put(&neigh_node->refcount, batadv_neigh_node_release);
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}
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/**
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* batadv_orig_ifinfo_put() - decrement the refcounter and possibly release
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* the orig_ifinfo
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* @orig_ifinfo: the orig_ifinfo object to release
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*/
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static inline void
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batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo)
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{
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if (!orig_ifinfo)
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return;
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kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release);
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}
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/**
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* batadv_orig_node_put() - decrement the orig node refcounter and possibly
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* release it
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* @orig_node: the orig node to free
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*/
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static inline void batadv_orig_node_put(struct batadv_orig_node *orig_node)
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{
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if (!orig_node)
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return;
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kref_put(&orig_node->refcount, batadv_orig_node_release);
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}
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#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
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