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Commit de68d100 authored by Matthias Schiffer's avatar Matthias Schiffer Committed by Antonio Quartulli
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batman-adv: split batadv_is_wifi_iface() into two functions 



Previously batadv_is_wifi_iface() did two things at once: looking up a
net_device from an interface index, and determining if it is a wifi device.

The second part is useful itself when the caller already has a net_device
reference.

Signed-off-by: default avatarMatthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: default avatarMarek Lindner <lindner_marek@yahoo.de>
Signed-off-by: default avatarAntonio Quartulli <ordex@autistici.org>
parent 06ecf24b

net/batman-adv/hard-interface.c

+52 −32
Original line number Diff line number Diff line
@@ -117,6 +117,58 @@ static int batadv_is_valid_iface(const struct net_device *net_dev) 
	return 1;

}



/**

 * batadv_is_wifi_netdev - check if the given net_device struct is a wifi

 *  interface

 * @net_device: the device to check

 *

 * Returns true if the net device is a 802.11 wireless device, false otherwise.

 */

static bool batadv_is_wifi_netdev(struct net_device *net_device)

{

#ifdef CONFIG_WIRELESS_EXT

	/* pre-cfg80211 drivers have to implement WEXT, so it is possible to

	 * check for wireless_handlers != NULL

	 */

	if (net_device->wireless_handlers)

		return true;

#endif



	/* cfg80211 drivers have to set ieee80211_ptr */

	if (net_device->ieee80211_ptr)

		return true;



	return false;

}



/**

 * batadv_is_wifi_iface - check if the given interface represented by ifindex

 *  is a wifi interface

 * @ifindex: interface index to check

 *

 * Returns true if the interface represented by ifindex is a 802.11 wireless

 * device, false otherwise.

 */

bool batadv_is_wifi_iface(int ifindex)

{

	struct net_device *net_device = NULL;

	bool ret = false;



	if (ifindex == BATADV_NULL_IFINDEX)

		goto out;



	net_device = dev_get_by_index(&init_net, ifindex);

	if (!net_device)

		goto out;



	ret = batadv_is_wifi_netdev(net_device);



out:

	if (net_device)

		dev_put(net_device);

	return ret;

}



static struct batadv_hard_iface *

batadv_hardif_get_active(const struct net_device *soft_iface)

{
@@ -657,38 +709,6 @@ static int batadv_hard_if_event(struct notifier_block *this, 
	return NOTIFY_DONE;

}



/* This function returns true if the interface represented by ifindex is a

 * 802.11 wireless device

 */

bool batadv_is_wifi_iface(int ifindex)

{

	struct net_device *net_device = NULL;

	bool ret = false;



	if (ifindex == BATADV_NULL_IFINDEX)

		goto out;



	net_device = dev_get_by_index(&init_net, ifindex);

	if (!net_device)

		goto out;



#ifdef CONFIG_WIRELESS_EXT

	/* pre-cfg80211 drivers have to implement WEXT, so it is possible to

	 * check for wireless_handlers != NULL

	 */

	if (net_device->wireless_handlers)

		ret = true;

	else

#endif

		/* cfg80211 drivers have to set ieee80211_ptr */

		if (net_device->ieee80211_ptr)

			ret = true;

out:

	if (net_device)

		dev_put(net_device);

	return ret;

}



struct notifier_block batadv_hard_if_notifier = {

	.notifier_call = batadv_hard_if_event,

};