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122 lines
3.2 KiB
122 lines
3.2 KiB
/* 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_HARD_INTERFACE_H_ |
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#define _NET_BATMAN_ADV_HARD_INTERFACE_H_ |
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#include "main.h" |
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#include <linux/compiler.h> |
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#include <linux/kref.h> |
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#include <linux/netdevice.h> |
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#include <linux/notifier.h> |
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#include <linux/rcupdate.h> |
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#include <linux/stddef.h> |
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#include <linux/types.h> |
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/** |
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* enum batadv_hard_if_state - State of a hard interface |
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*/ |
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enum batadv_hard_if_state { |
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/** |
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* @BATADV_IF_NOT_IN_USE: interface is not used as slave interface of a |
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* batman-adv soft interface |
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*/ |
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BATADV_IF_NOT_IN_USE, |
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/** |
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* @BATADV_IF_TO_BE_REMOVED: interface will be removed from soft |
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* interface |
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*/ |
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BATADV_IF_TO_BE_REMOVED, |
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/** @BATADV_IF_INACTIVE: interface is deactivated */ |
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BATADV_IF_INACTIVE, |
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/** @BATADV_IF_ACTIVE: interface is used */ |
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BATADV_IF_ACTIVE, |
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/** @BATADV_IF_TO_BE_ACTIVATED: interface is getting activated */ |
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BATADV_IF_TO_BE_ACTIVATED, |
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}; |
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/** |
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* enum batadv_hard_if_bcast - broadcast avoidance options |
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*/ |
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enum batadv_hard_if_bcast { |
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/** @BATADV_HARDIF_BCAST_OK: Do broadcast on according hard interface */ |
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BATADV_HARDIF_BCAST_OK = 0, |
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/** |
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* @BATADV_HARDIF_BCAST_NORECIPIENT: Broadcast not needed, there is no |
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* recipient |
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*/ |
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BATADV_HARDIF_BCAST_NORECIPIENT, |
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/** |
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* @BATADV_HARDIF_BCAST_DUPFWD: There is just the neighbor we got it |
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* from |
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*/ |
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BATADV_HARDIF_BCAST_DUPFWD, |
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/** @BATADV_HARDIF_BCAST_DUPORIG: There is just the originator */ |
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BATADV_HARDIF_BCAST_DUPORIG, |
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}; |
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extern struct notifier_block batadv_hard_if_notifier; |
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struct net_device *batadv_get_real_netdev(struct net_device *net_device); |
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bool batadv_is_cfg80211_hardif(struct batadv_hard_iface *hard_iface); |
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bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface); |
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struct batadv_hard_iface* |
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batadv_hardif_get_by_netdev(const struct net_device *net_dev); |
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int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, |
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struct net_device *soft_iface); |
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void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface); |
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int batadv_hardif_min_mtu(struct net_device *soft_iface); |
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void batadv_update_min_mtu(struct net_device *soft_iface); |
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void batadv_hardif_release(struct kref *ref); |
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int batadv_hardif_no_broadcast(struct batadv_hard_iface *if_outgoing, |
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u8 *orig_addr, u8 *orig_neigh); |
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/** |
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* batadv_hardif_put() - decrement the hard interface refcounter and possibly |
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* release it |
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* @hard_iface: the hard interface to free |
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*/ |
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static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface) |
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{ |
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if (!hard_iface) |
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return; |
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kref_put(&hard_iface->refcount, batadv_hardif_release); |
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} |
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/** |
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* batadv_primary_if_get_selected() - Get reference to primary interface |
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* @bat_priv: the bat priv with all the soft interface information |
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* |
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* Return: primary interface (with increased refcnt), otherwise NULL |
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*/ |
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static inline struct batadv_hard_iface * |
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batadv_primary_if_get_selected(struct batadv_priv *bat_priv) |
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{ |
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struct batadv_hard_iface *hard_iface; |
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rcu_read_lock(); |
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hard_iface = rcu_dereference(bat_priv->primary_if); |
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if (!hard_iface) |
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goto out; |
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if (!kref_get_unless_zero(&hard_iface->refcount)) |
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hard_iface = NULL; |
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out: |
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rcu_read_unlock(); |
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return hard_iface; |
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} |
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#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */
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