/* * Copyright 2006, Johannes Berg <johannes@sipsolutions.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ /* just for IFNAMSIZ */ #include <linux/if.h> #include <linux/slab.h> #include <linux/export.h> #include "led.h" void ieee80211_led_rx(struct ieee80211_local *local) { if (unlikely(!local->rx_led)) return; if (local->rx_led_counter++ % 2 == 0) led_trigger_event(local->rx_led, LED_OFF); else led_trigger_event(local->rx_led, LED_FULL); } /* q is 1 if a packet was enqueued, 0 if it has been transmitted */ void ieee80211_led_tx(struct ieee80211_local *local, int q) { if (unlikely(!local->tx_led)) return; /* not sure how this is supposed to work ... */ local->tx_led_counter += 2*q-1; if (local->tx_led_counter % 2 == 0) led_trigger_event(local->tx_led, LED_OFF); else led_trigger_event(local->tx_led, LED_FULL); } void ieee80211_led_assoc(struct ieee80211_local *local, bool associated) { if (unlikely(!local->assoc_led)) return; if (associated) led_trigger_event(local->assoc_led, LED_FULL); else 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_names(struct ieee80211_local *local) { snprintf(local->rx_led_name, sizeof(local->rx_led_name), "%srx", wiphy_name(local->hw.wiphy)); snprintf(local->tx_led_name, sizeof(local->tx_led_name), "%stx", wiphy_name(local->hw.wiphy)); snprintf(local->assoc_led_name, sizeof(local->assoc_led_name), "%sassoc", wiphy_name(local->hw.wiphy)); snprintf(local->radio_led_name, sizeof(local->radio_led_name), "%sradio", wiphy_name(local->hw.wiphy)); } void ieee80211_led_init(struct ieee80211_local *local) { local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL); if (local->rx_led) { local->rx_led->name = local->rx_led_name; if (led_trigger_register(local->rx_led)) { kfree(local->rx_led); local->rx_led = NULL; } } local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL); if (local->tx_led) { local->tx_led->name = local->tx_led_name; if (led_trigger_register(local->tx_led)) { kfree(local->tx_led); local->tx_led = NULL; } } local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL); if (local->assoc_led) { local->assoc_led->name = local->assoc_led_name; if (led_trigger_register(local->assoc_led)) { kfree(local->assoc_led); local->assoc_led = NULL; } } local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL); if (local->radio_led) { local->radio_led->name = local->radio_led_name; if (led_trigger_register(local->radio_led)) { kfree(local->radio_led); local->radio_led = NULL; } } if (local->tpt_led_trigger) { if (led_trigger_register(&local->tpt_led_trigger->trig)) { kfree(local->tpt_led_trigger); local->tpt_led_trigger = 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); } if (local->tx_led) { led_trigger_unregister(local->tx_led); kfree(local->tx_led); } if (local->rx_led) { led_trigger_unregister(local->rx_led); kfree(local->rx_led); } if (local->tpt_led_trigger) { led_trigger_unregister(&local->tpt_led_trigger->trig); kfree(local->tpt_led_trigger); } } char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw) { struct ieee80211_local *local = hw_to_local(hw); return local->radio_led_name; } 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); return local->assoc_led_name; } EXPORT_SYMBOL(__ieee80211_get_assoc_led_name); char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw) { struct ieee80211_local *local = hw_to_local(hw); return local->tx_led_name; } EXPORT_SYMBOL(__ieee80211_get_tx_led_name); char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw) { struct ieee80211_local *local = hw_to_local(hw); return local->rx_led_name; } EXPORT_SYMBOL(__ieee80211_get_rx_led_name); static unsigned long tpt_trig_traffic(struct ieee80211_local *local, struct tpt_led_trigger *tpt_trig) { unsigned long traffic, delta; traffic = tpt_trig->tx_bytes + tpt_trig->rx_bytes; delta = traffic - tpt_trig->prev_traffic; tpt_trig->prev_traffic = traffic; return DIV_ROUND_UP(delta, 1024 / 8); } static void tpt_trig_timer(unsigned long data) { struct ieee80211_local *local = (void *)data; struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; struct led_classdev *led_cdev; unsigned long on, off, tpt; int i; if (!tpt_trig->running) return; mod_timer(&tpt_trig->timer, round_jiffies(jiffies + HZ)); tpt = tpt_trig_traffic(local, tpt_trig); /* default to just solid on */ on = 1; off = 0; for (i = tpt_trig->blink_table_len - 1; i >= 0; i--) { if (tpt_trig->blink_table[i].throughput < 0 || tpt > tpt_trig->blink_table[i].throughput) { off = tpt_trig->blink_table[i].blink_time / 2; on = tpt_trig->blink_table[i].blink_time - off; break; } } read_lock(&tpt_trig->trig.leddev_list_lock); list_for_each_entry(led_cdev, &tpt_trig->trig.led_cdevs, trig_list) led_blink_set(led_cdev, &on, &off); read_unlock(&tpt_trig->trig.leddev_list_lock); } char *__ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, unsigned int flags, const struct ieee80211_tpt_blink *blink_table, unsigned int blink_table_len) { struct ieee80211_local *local = hw_to_local(hw); struct tpt_led_trigger *tpt_trig; if (WARN_ON(local->tpt_led_trigger)) return NULL; tpt_trig = kzalloc(sizeof(struct tpt_led_trigger), GFP_KERNEL); if (!tpt_trig) return NULL; snprintf(tpt_trig->name, sizeof(tpt_trig->name), "%stpt", wiphy_name(local->hw.wiphy)); tpt_trig->trig.name = tpt_trig->name; tpt_trig->blink_table = blink_table; tpt_trig->blink_table_len = blink_table_len; tpt_trig->want = flags; setup_timer(&tpt_trig->timer, tpt_trig_timer, (unsigned long)local); local->tpt_led_trigger = tpt_trig; return tpt_trig->name; } EXPORT_SYMBOL(__ieee80211_create_tpt_led_trigger); static void ieee80211_start_tpt_led_trig(struct ieee80211_local *local) { struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; if (tpt_trig->running) return; /* reset traffic */ tpt_trig_traffic(local, tpt_trig); tpt_trig->running = true; tpt_trig_timer((unsigned long)local); mod_timer(&tpt_trig->timer, round_jiffies(jiffies + HZ)); } static void ieee80211_stop_tpt_led_trig(struct ieee80211_local *local) { struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; struct led_classdev *led_cdev; if (!tpt_trig->running) return; tpt_trig->running = false; del_timer_sync(&tpt_trig->timer); read_lock(&tpt_trig->trig.leddev_list_lock); list_for_each_entry(led_cdev, &tpt_trig->trig.led_cdevs, trig_list) led_set_brightness(led_cdev, LED_OFF); read_unlock(&tpt_trig->trig.leddev_list_lock); } void ieee80211_mod_tpt_led_trig(struct ieee80211_local *local, unsigned int types_on, unsigned int types_off) { struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; bool allowed; WARN_ON(types_on & types_off); if (!tpt_trig) return; tpt_trig->active &= ~types_off; tpt_trig->active |= types_on; /* * Regardless of wanted state, we shouldn't blink when * the radio is disabled -- this can happen due to some * code ordering issues with __ieee80211_recalc_idle() * being called before the radio is started. */ allowed = tpt_trig->active & IEEE80211_TPT_LEDTRIG_FL_RADIO; if (!allowed || !(tpt_trig->active & tpt_trig->want)) ieee80211_stop_tpt_led_trig(local); else ieee80211_start_tpt_led_trig(local); }