linux/net/mac80211/led.c
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   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 "led.h"
  12
  13void ieee80211_led_rx(struct ieee80211_local *local)
  14{
  15        if (unlikely(!local->rx_led))
  16                return;
  17        if (local->rx_led_counter++ % 2 == 0)
  18                led_trigger_event(local->rx_led, LED_OFF);
  19        else
  20                led_trigger_event(local->rx_led, LED_FULL);
  21}
  22
  23/* q is 1 if a packet was enqueued, 0 if it has been transmitted */
  24void ieee80211_led_tx(struct ieee80211_local *local, int q)
  25{
  26        if (unlikely(!local->tx_led))
  27                return;
  28        /* not sure how this is supposed to work ... */
  29        local->tx_led_counter += 2*q-1;
  30        if (local->tx_led_counter % 2 == 0)
  31                led_trigger_event(local->tx_led, LED_OFF);
  32        else
  33                led_trigger_event(local->tx_led, LED_FULL);
  34}
  35
  36void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
  37{
  38        if (unlikely(!local->assoc_led))
  39                return;
  40        if (associated)
  41                led_trigger_event(local->assoc_led, LED_FULL);
  42        else
  43                led_trigger_event(local->assoc_led, LED_OFF);
  44}
  45
  46void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
  47{
  48        if (unlikely(!local->radio_led))
  49                return;
  50        if (enabled)
  51                led_trigger_event(local->radio_led, LED_FULL);
  52        else
  53                led_trigger_event(local->radio_led, LED_OFF);
  54}
  55
  56void ieee80211_led_init(struct ieee80211_local *local)
  57{
  58        local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
  59        if (local->rx_led) {
  60                snprintf(local->rx_led_name, sizeof(local->rx_led_name),
  61                         "%srx", wiphy_name(local->hw.wiphy));
  62                local->rx_led->name = local->rx_led_name;
  63                if (led_trigger_register(local->rx_led)) {
  64                        kfree(local->rx_led);
  65                        local->rx_led = NULL;
  66                }
  67        }
  68
  69        local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
  70        if (local->tx_led) {
  71                snprintf(local->tx_led_name, sizeof(local->tx_led_name),
  72                         "%stx", wiphy_name(local->hw.wiphy));
  73                local->tx_led->name = local->tx_led_name;
  74                if (led_trigger_register(local->tx_led)) {
  75                        kfree(local->tx_led);
  76                        local->tx_led = NULL;
  77                }
  78        }
  79
  80        local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
  81        if (local->assoc_led) {
  82                snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
  83                         "%sassoc", wiphy_name(local->hw.wiphy));
  84                local->assoc_led->name = local->assoc_led_name;
  85                if (led_trigger_register(local->assoc_led)) {
  86                        kfree(local->assoc_led);
  87                        local->assoc_led = NULL;
  88                }
  89        }
  90
  91        local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
  92        if (local->radio_led) {
  93                snprintf(local->radio_led_name, sizeof(local->radio_led_name),
  94                         "%sradio", wiphy_name(local->hw.wiphy));
  95                local->radio_led->name = local->radio_led_name;
  96                if (led_trigger_register(local->radio_led)) {
  97                        kfree(local->radio_led);
  98                        local->radio_led = NULL;
  99                }
 100        }
 101}
 102
 103void ieee80211_led_exit(struct ieee80211_local *local)
 104{
 105        if (local->radio_led) {
 106                led_trigger_unregister(local->radio_led);
 107                kfree(local->radio_led);
 108        }
 109        if (local->assoc_led) {
 110                led_trigger_unregister(local->assoc_led);
 111                kfree(local->assoc_led);
 112        }
 113        if (local->tx_led) {
 114                led_trigger_unregister(local->tx_led);
 115                kfree(local->tx_led);
 116        }
 117        if (local->rx_led) {
 118                led_trigger_unregister(local->rx_led);
 119                kfree(local->rx_led);
 120        }
 121}
 122
 123char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
 124{
 125        struct ieee80211_local *local = hw_to_local(hw);
 126
 127        if (local->radio_led)
 128                return local->radio_led_name;
 129        return NULL;
 130}
 131EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
 132
 133char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
 134{
 135        struct ieee80211_local *local = hw_to_local(hw);
 136
 137        if (local->assoc_led)
 138                return local->assoc_led_name;
 139        return NULL;
 140}
 141EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
 142
 143char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
 144{
 145        struct ieee80211_local *local = hw_to_local(hw);
 146
 147        if (local->tx_led)
 148                return local->tx_led_name;
 149        return NULL;
 150}
 151EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
 152
 153char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
 154{
 155        struct ieee80211_local *local = hw_to_local(hw);
 156
 157        if (local->rx_led)
 158                return local->rx_led_name;
 159        return NULL;
 160}
 161EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
 162