net/mac80211/led.c

   1 /*
   2  * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 /* just for IFNAMSIZ */
  10 #include <linux/if.h>
  11 #include <linux/slab.h>
  12 #include "led.h"
  13
  14 void ieee80211_led_rx(struct ieee80211_local *local)
  15 {
  16         if (unlikely(!local->rx_led))
  17                 return;
  18         if (local->rx_led_counter++ % 2 == 0)
  19                 led_trigger_event(local->rx_led, LED_OFF);
  20         else
  21                 led_trigger_event(local->rx_led, LED_FULL);
  22 }
  23
  24 /* q is 1 if a packet was enqueued, 0 if it has been transmitted */
  25 void ieee80211_led_tx(struct ieee80211_local *local, int q)
  26 {
  27         if (unlikely(!local->tx_led))
  28                 return;
  29         /* not sure how this is supposed to work ... */
  30         local->tx_led_counter += 2*q-1;
  31         if (local->tx_led_counter % 2 == 0)
  32                 led_trigger_event(local->tx_led, LED_OFF);
  33         else
  34                 led_trigger_event(local->tx_led, LED_FULL);
  35 }
  36
  37 void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
  38 {
  39         if (unlikely(!local->assoc_led))
  40                 return;
  41         if (associated)
  42                 led_trigger_event(local->assoc_led, LED_FULL);
  43         else
  44                 led_trigger_event(local->assoc_led, LED_OFF);
  45 }
  46
  47 void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
  48 {
  49         if (unlikely(!local->radio_led))
  50                 return;
  51         if (enabled)
  52                 led_trigger_event(local->radio_led, LED_FULL);
  53         else
  54                 led_trigger_event(local->radio_led, LED_OFF);
  55 }
  56
  57 void ieee80211_led_init(struct ieee80211_local *local)
  58 {
  59         local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
  60         if (local->rx_led) {
  61                 snprintf(local->rx_led_name, sizeof(local->rx_led_name),
  62                          "%srx", wiphy_name(local->hw.wiphy));
  63                 local->rx_led->name = local->rx_led_name;
  64                 if (led_trigger_register(local->rx_led)) {
  65                         kfree(local->rx_led);
  66                         local->rx_led = NULL;
  67                 }
  68         }
  69
  70         local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
  71         if (local->tx_led) {
  72                 snprintf(local->tx_led_name, sizeof(local->tx_led_name),
  73                          "%stx", wiphy_name(local->hw.wiphy));
  74                 local->tx_led->name = local->tx_led_name;
  75                 if (led_trigger_register(local->tx_led)) {
  76                         kfree(local->tx_led);
  77                         local->tx_led = NULL;
  78                 }
  79         }
  80
  81         local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
  82         if (local->assoc_led) {
  83                 snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
  84                          "%sassoc", wiphy_name(local->hw.wiphy));
  85                 local->assoc_led->name = local->assoc_led_name;
  86                 if (led_trigger_register(local->assoc_led)) {
  87                         kfree(local->assoc_led);
  88                         local->assoc_led = NULL;
  89                 }
  90         }
  91
  92         local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
  93         if (local->radio_led) {
  94                 snprintf(local->radio_led_name, sizeof(local->radio_led_name),
  95                          "%sradio", wiphy_name(local->hw.wiphy));
  96                 local->radio_led->name = local->radio_led_name;
  97                 if (led_trigger_register(local->radio_led)) {
  98                         kfree(local->radio_led);
  99                         local->radio_led = NULL;
 100                 }
 101         }
 102 }
 103
 104 void ieee80211_led_exit(struct ieee80211_local *local)
 105 {
 106         if (local->radio_led) {
 107                 led_trigger_unregister(local->radio_led);
 108                 kfree(local->radio_led);
 109         }
 110         if (local->assoc_led) {
 111                 led_trigger_unregister(local->assoc_led);
 112                 kfree(local->assoc_led);
 113         }
 114         if (local->tx_led) {
 115                 led_trigger_unregister(local->tx_led);
 116                 kfree(local->tx_led);
 117         }
 118         if (local->rx_led) {
 119                 led_trigger_unregister(local->rx_led);
 120                 kfree(local->rx_led);
 121         }
 122 }
 123
 124 char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
 125 {
 126         struct ieee80211_local *local = hw_to_local(hw);
 127
 128         if (local->radio_led)
 129                 return local->radio_led_name;
 130         return NULL;
 131 }
 132 EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
 133
 134 char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
 135 {
 136         struct ieee80211_local *local = hw_to_local(hw);
 137
 138         if (local->assoc_led)
 139                 return local->assoc_led_name;
 140         return NULL;
 141 }
 142 EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
 143
 144 char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
 145 {
 146         struct ieee80211_local *local = hw_to_local(hw);
 147
 148         if (local->tx_led)
 149                 return local->tx_led_name;
 150         return NULL;
 151 }
 152 EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
 153
 154 char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
 155 {
 156         struct ieee80211_local *local = hw_to_local(hw);
 157
 158         if (local->rx_led)
 159                 return local->rx_led_name;
 160         return NULL;
 161 }
 162 EXPORT_SYMBOL(__ieee80211_get_rx_led_name);