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Commit 1f87f7d3 authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
Browse files

cfg80211: add rfkill support 



To be easier on drivers and users, have cfg80211 register an
rfkill structure that drivers can access. When soft-killed,
simply take down all interfaces; when hard-killed the driver
needs to notify us and we will take down the interfaces
after the fact. While rfkilled, interfaces cannot be set UP.

Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 6081162e

include/asm-generic/errno.h

+2 −0
Original line number Diff line number Diff line
@@ -106,4 +106,6 @@ 
#define	EOWNERDEAD	130	/* Owner died */

#define	ENOTRECOVERABLE	131	/* State not recoverable */



#define ERFKILL		132	/* Operation not possible due to RF-kill */



#endif

include/net/cfg80211.h

+25 −4
Original line number Diff line number Diff line
@@ -757,13 +757,11 @@ enum wiphy_params_flags { 
 * @TX_POWER_AUTOMATIC: the dbm parameter is ignored

 * @TX_POWER_LIMITED: limit TX power by the dbm parameter

 * @TX_POWER_FIXED: fix TX power to the dbm parameter

 * @TX_POWER_OFF: turn off completely (will go away)

 */

enum tx_power_setting {

	TX_POWER_AUTOMATIC,

	TX_POWER_LIMITED,

	TX_POWER_FIXED,

	TX_POWER_OFF,

};



/**
@@ -855,8 +853,10 @@ enum tx_power_setting { 
 *

 * @set_tx_power: set the transmit power according to the parameters

 * @get_tx_power: store the current TX power into the dbm variable;

 *	return 0 if successful; or -ENETDOWN if successful but power

 *	is disabled (this will go away)

 *	return 0 if successful

 *

 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting

 *	functions to adjust rfkill hw state

 */

struct cfg80211_ops {

	int	(*suspend)(struct wiphy *wiphy);
@@ -952,6 +952,8 @@ struct cfg80211_ops { 
	int	(*set_tx_power)(struct wiphy *wiphy,

				enum tx_power_setting type, int dbm);

	int	(*get_tx_power)(struct wiphy *wiphy, int *dbm);



	void	(*rfkill_poll)(struct wiphy *wiphy);

};



/*
@@ -1666,4 +1668,23 @@ void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 
 */

void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp);



/**

 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state

 * @wiphy: the wiphy

 * @blocked: block status

 */

void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked);



/**

 * wiphy_rfkill_start_polling - start polling rfkill

 * @wiphy: the wiphy

 */

void wiphy_rfkill_start_polling(struct wiphy *wiphy);



/**

 * wiphy_rfkill_stop_polling - stop polling rfkill

 * @wiphy: the wiphy

 */

void wiphy_rfkill_stop_polling(struct wiphy *wiphy);



#endif /* __NET_CFG80211_H */

include/net/mac80211.h

+17 −3
Original line number Diff line number Diff line
@@ -526,7 +526,7 @@ enum ieee80211_conf_flags { 
/**

 * enum ieee80211_conf_changed - denotes which configuration changed

 *

 * @IEEE80211_CONF_CHANGE_RADIO_ENABLED: the value of radio_enabled changed

 * @_IEEE80211_CONF_CHANGE_RADIO_ENABLED: DEPRECATED

 * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed

 * @IEEE80211_CONF_CHANGE_RADIOTAP: the radiotap flag changed

 * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed
@@ -536,7 +536,7 @@ enum ieee80211_conf_flags { 
 * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed

 */

enum ieee80211_conf_changed {

	IEEE80211_CONF_CHANGE_RADIO_ENABLED	= BIT(0),

	_IEEE80211_CONF_CHANGE_RADIO_ENABLED	= BIT(0),

	IEEE80211_CONF_CHANGE_LISTEN_INTERVAL	= BIT(2),

	IEEE80211_CONF_CHANGE_RADIOTAP		= BIT(3),

	IEEE80211_CONF_CHANGE_PS		= BIT(4),
@@ -546,6 +546,14 @@ enum ieee80211_conf_changed { 
	IEEE80211_CONF_CHANGE_IDLE		= BIT(8),

};



static inline __deprecated enum ieee80211_conf_changed

__IEEE80211_CONF_CHANGE_RADIO_ENABLED(void)

{

	return _IEEE80211_CONF_CHANGE_RADIO_ENABLED;

}

#define IEEE80211_CONF_CHANGE_RADIO_ENABLED \

	__IEEE80211_CONF_CHANGE_RADIO_ENABLED()



/**

 * struct ieee80211_conf - configuration of the device

 *
@@ -585,7 +593,7 @@ struct ieee80211_conf { 
	int max_sleep_period;



	u16 listen_interval;

	bool radio_enabled;

	bool __deprecated radio_enabled;



	u8 long_frame_max_tx_count, short_frame_max_tx_count;
@@ -1396,6 +1404,10 @@ enum ieee80211_ampdu_mlme_action { 
 * 	is the first frame we expect to perform the action on. Notice

 * 	that TX/RX_STOP can pass NULL for this parameter.

 *	Returns a negative error code on failure.

 *

 * @rfkill_poll: Poll rfkill hardware state. If you need this, you also

 *	need to set wiphy->rfkill_poll to %true before registration,

 *	and need to call wiphy_rfkill_set_hw_state() in the callback.

 */

struct ieee80211_ops {

	int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb);
@@ -1444,6 +1456,8 @@ struct ieee80211_ops { 
	int (*ampdu_action)(struct ieee80211_hw *hw,

			    enum ieee80211_ampdu_mlme_action action,

			    struct ieee80211_sta *sta, u16 tid, u16 *ssn);



	void (*rfkill_poll)(struct ieee80211_hw *hw);

};



/**

net/mac80211/cfg.c

+8 −12
Original line number Diff line number Diff line
@@ -1340,7 +1340,6 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy, 
	struct ieee80211_local *local = wiphy_priv(wiphy);

	struct ieee80211_channel *chan = local->hw.conf.channel;

	u32 changes = 0;

	bool radio_enabled = true;



	switch (type) {

	case TX_POWER_AUTOMATIC:
@@ -1359,14 +1358,6 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy, 
			return -EINVAL;

		local->user_power_level = dbm;

		break;

	case TX_POWER_OFF:

		radio_enabled = false;

		break;

	}



	if (radio_enabled != local->hw.conf.radio_enabled) {

		changes |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;

		local->hw.conf.radio_enabled = radio_enabled;

	}



	ieee80211_hw_config(local, changes);
@@ -1380,12 +1371,16 @@ static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) 


	*dbm = local->hw.conf.power_level;



	if (!local->hw.conf.radio_enabled)

		return -ENETDOWN;



	return 0;

}



static void ieee80211_rfkill_poll(struct wiphy *wiphy)

{

	struct ieee80211_local *local = wiphy_priv(wiphy);



	drv_rfkill_poll(local);

}



struct cfg80211_ops mac80211_config_ops = {

	.add_virtual_intf = ieee80211_add_iface,

	.del_virtual_intf = ieee80211_del_iface,
@@ -1427,4 +1422,5 @@ struct cfg80211_ops mac80211_config_ops = { 
	.set_wiphy_params = ieee80211_set_wiphy_params,

	.set_tx_power = ieee80211_set_tx_power,

	.get_tx_power = ieee80211_get_tx_power,

	.rfkill_poll = ieee80211_rfkill_poll,

};

net/mac80211/driver-ops.h

+7 −0
Original line number Diff line number Diff line
@@ -181,4 +181,11 @@ static inline int drv_ampdu_action(struct ieee80211_local *local, 
						sta, tid, ssn);

	return -EOPNOTSUPP;

}





static inline void drv_rfkill_poll(struct ieee80211_local *local)

{

	if (local->ops->rfkill_poll)

		local->ops->rfkill_poll(&local->hw);

}

#endif /* __MAC80211_DRIVER_OPS */