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mac80211: Add radio led trigger

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Some devices have a seperate LED which indicates if the radio is
enabled or not. This adds a LED trigger to mac80211 where drivers
can hook into when they are interested in radio status changes.

v2: Check hw.conf.radio_enabled when calling start().

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivo van Doorn 2008-01-07 19:45:24 +01:00 committed by David S. Miller
parent df26e7ea04
commit cdcb006fbe
6 changed files with 78 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
include/net/mac80211.h
View File

@ -1143,6 +1143,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw);
extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw);
extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw);
extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw);
extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw);
#endif
/**
* ieee80211_get_tx_led_name - get name of TX LED
@ -1182,6 +1183,16 @@ static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
#endif
}
/**
* ieee80211_get_assoc_led_name - get name of association LED
*
* mac80211 creates a association LED trigger for each wireless hardware
* that can be used to drive LEDs if your driver registers a LED device.
* This function returns the name (or %NULL if not configured for LEDs)
* of the trigger so you can automatically link the LED device.
*
* @hw: the hardware to get the LED trigger name for
*/
static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
{
#ifdef CONFIG_MAC80211_LEDS
@ -1191,6 +1202,24 @@ static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
#endif
}
/**
* ieee80211_get_radio_led_name - get name of radio LED
*
* mac80211 creates a radio change LED trigger for each wireless hardware
* that can be used to drive LEDs if your driver registers a LED device.
* This function returns the name (or %NULL if not configured for LEDs)
* of the trigger so you can automatically link the LED device.
*
* @hw: the hardware to get the LED trigger name for
*/
static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
{
#ifdef CONFIG_MAC80211_LEDS
return __ieee80211_get_radio_led_name(hw);
#else
return NULL;
#endif
}
/* Register a new hardware PHYMODE capability to the stack. */
int ieee80211_register_hwmode(struct ieee80211_hw *hw,

3
net/mac80211/ieee80211.c
View File

@ -219,6 +219,7 @@ static int ieee80211_open(struct net_device *dev)
if (res)
return res;
ieee80211_hw_config(local);
ieee80211_led_radio(local, local->hw.conf.radio_enabled);
}
switch (sdata->type) {
@ -392,6 +393,8 @@ static int ieee80211_stop(struct net_device *dev)
if (local->ops->stop)
local->ops->stop(local_to_hw(local));
ieee80211_led_radio(local, 0);
tasklet_disable(&local->tx_pending_tasklet);
tasklet_disable(&local->tasklet);
}

5
net/mac80211/ieee80211_i.h
View File

@ -500,8 +500,9 @@ struct ieee80211_local {
#ifdef CONFIG_MAC80211_LEDS
int tx_led_counter, rx_led_counter;
struct led_trigger *tx_led, *rx_led, *assoc_led;
char tx_led_name[32], rx_led_name[32], assoc_led_name[32];
struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
char tx_led_name[32], rx_led_name[32],
assoc_led_name[32], radio_led_name[32];
#endif
u32 channel_use;

2
net/mac80211/ieee80211_ioctl.c
View File

@ -21,6 +21,7 @@
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "ieee80211_led.h"
#include "ieee80211_rate.h"
#include "wpa.h"
#include "aes_ccm.h"
@ -652,6 +653,7 @@ static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
local->hw.conf.radio_enabled = !(data->txpower.disabled);
need_reconfig = 1;
ieee80211_led_radio(local, local->hw.conf.radio_enabled);
}
if (need_reconfig) {

35
net/mac80211/ieee80211_led.c
View File

@ -43,6 +43,16 @@ void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
led_trigger_event(local->assoc_led, LED_OFF);
}
void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
{
if (unlikely(!local->radio_led))
return;
if (enabled)
led_trigger_event(local->radio_led, LED_FULL);
else
led_trigger_event(local->radio_led, LED_OFF);
}
void ieee80211_led_init(struct ieee80211_local *local)
{
local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
@ -77,10 +87,25 @@ void ieee80211_led_init(struct ieee80211_local *local)
local->assoc_led = NULL;
}
}
local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
if (local->radio_led) {
snprintf(local->radio_led_name, sizeof(local->radio_led_name),
"%sradio", wiphy_name(local->hw.wiphy));
local->radio_led->name = local->radio_led_name;
if (led_trigger_register(local->radio_led)) {
kfree(local->radio_led);
local->radio_led = NULL;
}
}
}
void ieee80211_led_exit(struct ieee80211_local *local)
{
if (local->radio_led) {
led_trigger_unregister(local->radio_led);
kfree(local->radio_led);
}
if (local->assoc_led) {
led_trigger_unregister(local->assoc_led);
kfree(local->assoc_led);
@ -95,6 +120,16 @@ void ieee80211_led_exit(struct ieee80211_local *local)
}
}
char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
if (local->radio_led)
return local->radio_led_name;
return NULL;
}
EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);

6
net/mac80211/ieee80211_led.h
View File

@ -16,6 +16,8 @@ extern void ieee80211_led_rx(struct ieee80211_local *local);
extern void ieee80211_led_tx(struct ieee80211_local *local, int q);
extern void ieee80211_led_assoc(struct ieee80211_local *local,
bool associated);
extern void ieee80211_led_radio(struct ieee80211_local *local,
bool enabled);
extern void ieee80211_led_init(struct ieee80211_local *local);
extern void ieee80211_led_exit(struct ieee80211_local *local);
#else
@ -29,6 +31,10 @@ static inline void ieee80211_led_assoc(struct ieee80211_local *local,
bool associated)
{
}
static inline void ieee80211_led_radio(struct ieee80211_local *local,
bool enabled)
{
}
static inline void ieee80211_led_init(struct ieee80211_local *local)
{
}