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cfa55c6d47
The batman-adv source code was using the year of publication (to net-next) as "last" year for the copyright statement. The whole source code mentioned in the MAINTAINERS "BATMAN ADVANCED" section was handled as a single entity regarding the publishing year. This avoided having outdated (in sense of year information - not copyright holder) publishing information inside several files. But since the simple "update copyright year" commit (without other changes) in the file was not well received in the upstream kernel, the option to not have a copyright year (for initial and last publication) in the files are chosen instead. More detailed information about the years can still be retrieved from the SCM system. Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
120 lines
3.3 KiB
C
120 lines
3.3 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_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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#include <net/net_namespace.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 *net, const char *iface_name);
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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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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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