drivers/leds/ledtrig-netdev.c

86 static void set_baseline_state(struct led_netdev_data *trigger_data)
88 	if ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up)
89 		led_set_brightness(trigger_data->led_cdev, LED_FULL);
91 		led_set_brightness(trigger_data->led_cdev, LED_OFF);
93 	if ((trigger_data->mode & (MODE_TX | MODE_RX)) != 0 && trigger_data->link_up)
94 		mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
101 	struct led_netdev_data *trigger_data = led_cdev->trigger_data;
103 	spin_lock_bh(&trigger_data->lock);
104 	sprintf(buf, "%s\n", trigger_data->device_name);
105 	spin_unlock_bh(&trigger_data->lock);
114 	struct led_netdev_data *trigger_data = led_cdev->trigger_data;
119 	spin_lock_bh(&trigger_data->lock);
120 	del_timer_sync(&trigger_data->timer);
122 	strcpy(trigger_data->device_name, buf);
123 	if (size > 0 && trigger_data->device_name[size-1] == '\n')
124 		trigger_data->device_name[size-1] = 0;
125 	trigger_data->link_up = 0;
126 	trigger_data->last_activity = 0;
128 	if (trigger_data->device_name[0] != 0) {
130 		trigger_data->net_dev = dev_get_by_name(&init_net, trigger_data->device_name);
131 		if (trigger_data->net_dev != NULL)
132 			trigger_data->link_up = (dev_get_flags(trigger_data->net_dev) & IFF_LOWER_UP) != 0;
135 	set_baseline_state(trigger_data);
136 	spin_unlock_bh(&trigger_data->lock);
147 	struct led_netdev_data *trigger_data = led_cdev->trigger_data;
149 	spin_lock_bh(&trigger_data->lock);
151 	if (trigger_data->mode == 0) {
154 		if (trigger_data->mode & MODE_LINK)
156 		if (trigger_data->mode & MODE_TX)
158 		if (trigger_data->mode & MODE_RX)
163 	spin_unlock_bh(&trigger_data->lock);
172 	struct led_netdev_data *trigger_data = led_cdev->trigger_data;
204 	spin_lock_bh(&trigger_data->lock);
205 	del_timer_sync(&trigger_data->timer);
207 	trigger_data->mode = new_mode;
209 	set_baseline_state(trigger_data);
210 	spin_unlock_bh(&trigger_data->lock);
221 	struct led_netdev_data *trigger_data = led_cdev->trigger_data;
223 	spin_lock_bh(&trigger_data->lock);
224 	sprintf(buf, "%u\n", jiffies_to_msecs(trigger_data->interval));
225 	spin_unlock_bh(&trigger_data->lock);
234 	struct led_netdev_data *trigger_data = led_cdev->trigger_data;
245 		spin_lock_bh(&trigger_data->lock);
246 		del_timer_sync(&trigger_data->timer);
248 		trigger_data->interval = msecs_to_jiffies(value);
250 		set_baseline_state(trigger_data); /* resets timer */
251 		spin_unlock_bh(&trigger_data->lock);
266 	struct led_netdev_data *trigger_data = container_of(nb, struct led_netdev_data, notifier);
271 	spin_lock_bh(&trigger_data->lock);
273 	if (strcmp(dev->name, trigger_data->device_name))
276 	del_timer_sync(&trigger_data->timer);
279 		if (trigger_data->net_dev != NULL)
280 			dev_put(trigger_data->net_dev);
283 		trigger_data->net_dev = dev;
284 		trigger_data->link_up = 0;
288 	if (evt == NETDEV_UNREGISTER && trigger_data->net_dev != NULL) {
289 		dev_put(trigger_data->net_dev);
290 		trigger_data->net_dev = NULL;
296 	trigger_data->link_up = (evt != NETDEV_DOWN && netif_carrier_ok(dev));
297 	set_baseline_state(trigger_data);
300 	spin_unlock_bh(&trigger_data->lock);
307 	struct led_netdev_data *trigger_data = (struct led_netdev_data *)arg;
312 	if (!trigger_data->link_up || !trigger_data->net_dev || (trigger_data->mode & (MODE_TX | MODE_RX)) == 0) {
314 		led_set_brightness(trigger_data->led_cdev, ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up) ? LED_FULL : LED_OFF);
318 	dev_stats = dev_get_stats(trigger_data->net_dev, &temp);
320 		((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) +
321 		((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0);
323 	if (trigger_data->mode & MODE_LINK) {
329 		if (trigger_data->led_cdev->brightness == LED_OFF) {
330 			led_set_brightness(trigger_data->led_cdev, LED_FULL);
331 		} else if (trigger_data->last_activity != new_activity) {
332 			led_set_brightness(trigger_data->led_cdev, LED_OFF);
338 		if (trigger_data->led_cdev->brightness == LED_FULL) {
339 			led_set_brightness(trigger_data->led_cdev, LED_OFF);
340 		} else if (trigger_data->last_activity != new_activity) {
341 			led_set_brightness(trigger_data->led_cdev, LED_FULL);
345 	trigger_data->last_activity = new_activity;
346 	mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
351 	struct led_netdev_data *trigger_data;
354 	trigger_data = kzalloc(sizeof(struct led_netdev_data), GFP_KERNEL);
355 	if (!trigger_data)
358 	spin_lock_init(&trigger_data->lock);
360 	trigger_data->notifier.notifier_call = netdev_trig_notify;
361 	trigger_data->notifier.priority = 10;
363 	setup_timer(&trigger_data->timer, netdev_trig_timer, (unsigned long) trigger_data);
365 	trigger_data->led_cdev = led_cdev;
366 	trigger_data->net_dev = NULL;
367 	trigger_data->device_name[0] = 0;
369 	trigger_data->mode = 0;
370 	trigger_data->interval = msecs_to_jiffies(50);
371 	trigger_data->link_up = 0;
372 	trigger_data->last_activity = 0;
374 	led_cdev->trigger_data = trigger_data;
386 	register_netdevice_notifier(&trigger_data->notifier);
394 	led_cdev->trigger_data = NULL;
395 	kfree(trigger_data);
400 	struct led_netdev_data *trigger_data = led_cdev->trigger_data;
402 	if (trigger_data) {
403 		unregister_netdevice_notifier(&trigger_data->notifier);
409 		spin_lock_bh(&trigger_data->lock);
410 		del_timer_sync(&trigger_data->timer);
412 		if (trigger_data->net_dev) {
413 			dev_put(trigger_data->net_dev);
414 			trigger_data->net_dev = NULL;
417 		spin_unlock_bh(&trigger_data->lock);
419 		kfree(trigger_data);