121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors:
|
|
*
|
|
* Marek Lindner, Simon Wunderlich
|
|
*/
|
|
|
|
#ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_
|
|
#define _NET_BATMAN_ADV_HARD_INTERFACE_H_
|
|
|
|
#include "main.h"
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/notifier.h>
|
|
#include <linux/rcupdate.h>
|
|
#include <linux/stddef.h>
|
|
#include <linux/types.h>
|
|
#include <net/net_namespace.h>
|
|
|
|
/**
|
|
* enum batadv_hard_if_state - State of a hard interface
|
|
*/
|
|
enum batadv_hard_if_state {
|
|
/**
|
|
* @BATADV_IF_NOT_IN_USE: interface is not used as slave interface of a
|
|
* batman-adv soft interface
|
|
*/
|
|
BATADV_IF_NOT_IN_USE,
|
|
|
|
/**
|
|
* @BATADV_IF_TO_BE_REMOVED: interface will be removed from soft
|
|
* interface
|
|
*/
|
|
BATADV_IF_TO_BE_REMOVED,
|
|
|
|
/** @BATADV_IF_INACTIVE: interface is deactivated */
|
|
BATADV_IF_INACTIVE,
|
|
|
|
/** @BATADV_IF_ACTIVE: interface is used */
|
|
BATADV_IF_ACTIVE,
|
|
|
|
/** @BATADV_IF_TO_BE_ACTIVATED: interface is getting activated */
|
|
BATADV_IF_TO_BE_ACTIVATED,
|
|
};
|
|
|
|
/**
|
|
* enum batadv_hard_if_bcast - broadcast avoidance options
|
|
*/
|
|
enum batadv_hard_if_bcast {
|
|
/** @BATADV_HARDIF_BCAST_OK: Do broadcast on according hard interface */
|
|
BATADV_HARDIF_BCAST_OK = 0,
|
|
|
|
/**
|
|
* @BATADV_HARDIF_BCAST_NORECIPIENT: Broadcast not needed, there is no
|
|
* recipient
|
|
*/
|
|
BATADV_HARDIF_BCAST_NORECIPIENT,
|
|
|
|
/**
|
|
* @BATADV_HARDIF_BCAST_DUPFWD: There is just the neighbor we got it
|
|
* from
|
|
*/
|
|
BATADV_HARDIF_BCAST_DUPFWD,
|
|
|
|
/** @BATADV_HARDIF_BCAST_DUPORIG: There is just the originator */
|
|
BATADV_HARDIF_BCAST_DUPORIG,
|
|
};
|
|
|
|
extern struct notifier_block batadv_hard_if_notifier;
|
|
|
|
struct net_device *batadv_get_real_netdev(struct net_device *net_device);
|
|
bool batadv_is_cfg80211_hardif(struct batadv_hard_iface *hard_iface);
|
|
bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface);
|
|
struct batadv_hard_iface*
|
|
batadv_hardif_get_by_netdev(const struct net_device *net_dev);
|
|
int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
|
|
struct net *net, const char *iface_name);
|
|
void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface);
|
|
int batadv_hardif_min_mtu(struct net_device *soft_iface);
|
|
void batadv_update_min_mtu(struct net_device *soft_iface);
|
|
void batadv_hardif_release(struct kref *ref);
|
|
int batadv_hardif_no_broadcast(struct batadv_hard_iface *if_outgoing,
|
|
u8 *orig_addr, u8 *orig_neigh);
|
|
|
|
/**
|
|
* batadv_hardif_put() - decrement the hard interface refcounter and possibly
|
|
* release it
|
|
* @hard_iface: the hard interface to free
|
|
*/
|
|
static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface)
|
|
{
|
|
kref_put(&hard_iface->refcount, batadv_hardif_release);
|
|
}
|
|
|
|
/**
|
|
* batadv_primary_if_get_selected() - Get reference to primary interface
|
|
* @bat_priv: the bat priv with all the soft interface information
|
|
*
|
|
* Return: primary interface (with increased refcnt), otherwise NULL
|
|
*/
|
|
static inline struct batadv_hard_iface *
|
|
batadv_primary_if_get_selected(struct batadv_priv *bat_priv)
|
|
{
|
|
struct batadv_hard_iface *hard_iface;
|
|
|
|
rcu_read_lock();
|
|
hard_iface = rcu_dereference(bat_priv->primary_if);
|
|
if (!hard_iface)
|
|
goto out;
|
|
|
|
if (!kref_get_unless_zero(&hard_iface->refcount))
|
|
hard_iface = NULL;
|
|
|
|
out:
|
|
rcu_read_unlock();
|
|
return hard_iface;
|
|
}
|
|
|
|
#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */
|