#include <linux/timer.h>
#include <linux/ctype.h>
#include <linux/leds.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
+#include <net/net_namespace.h>
+#endif
+
#include "leds.h"
/*
struct led_netdev_data {
rwlock_t lock;
-
+
struct timer_list timer;
- struct notifier_block notifier;
-
+ struct notifier_block notifier;
+
struct led_classdev *led_cdev;
struct net_device *net_dev;
-
+
char device_name[IFNAMSIZ];
unsigned interval;
unsigned mode;
};
static void set_baseline_state(struct led_netdev_data *trigger_data)
-{
+{
if ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up)
led_set_brightness(trigger_data->led_cdev, LED_FULL);
else
led_set_brightness(trigger_data->led_cdev, LED_OFF);
-
+
if ((trigger_data->mode & (MODE_TX | MODE_RX)) != 0 && trigger_data->link_up)
mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
else
- del_timer(&trigger_data->timer);
-}
+ del_timer(&trigger_data->timer);
+}
static ssize_t led_device_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct led_netdev_data *trigger_data = led_cdev->trigger_data;
-
+
read_lock(&trigger_data->lock);
sprintf(buf, "%s\n", trigger_data->device_name);
read_unlock(&trigger_data->lock);
-
+
return strlen(buf) + 1;
}
-
-static ssize_t led_device_name_store(struct device *dev,
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+extern struct net init_net;
+#endif
+
+static ssize_t led_device_name_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct led_netdev_data *trigger_data = led_cdev->trigger_data;
-
+
if (size < 0 || size >= IFNAMSIZ)
return -EINVAL;
-
+
write_lock(&trigger_data->lock);
strcpy(trigger_data->device_name, buf);
if (size > 0 && trigger_data->device_name[size-1] == '\n')
trigger_data->device_name[size-1] = 0;
-
+
if (trigger_data->device_name[0] != 0) {
/* check for existing device to update from */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
+ trigger_data->net_dev = dev_get_by_name(&init_net, trigger_data->device_name);
+#else
trigger_data->net_dev = dev_get_by_name(trigger_data->device_name);
+#endif
if (trigger_data->net_dev != NULL)
trigger_data->link_up = (dev_get_flags(trigger_data->net_dev) & IFF_LOWER_UP) != 0;
set_baseline_state(trigger_data); /* updates LEDs, may start timers */
}
-
- write_unlock(&trigger_data->lock);
+
+ write_unlock(&trigger_data->lock);
return size;
}
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct led_netdev_data *trigger_data = led_cdev->trigger_data;
-
+
read_lock(&trigger_data->lock);
-
+
if (trigger_data->mode == 0) {
strcpy(buf, "none\n");
} else {
- if (trigger_data->mode & MODE_LINK)
+ if (trigger_data->mode & MODE_LINK)
strcat(buf, "link ");
if (trigger_data->mode & MODE_TX)
strcat(buf, "tx ");
strcat(buf, "rx ");
strcat(buf, "\n");
}
-
- read_unlock(&trigger_data->lock);
+
+ read_unlock(&trigger_data->lock);
return strlen(buf)+1;
}
-static ssize_t led_mode_store(struct device *dev,
+static ssize_t led_mode_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
- struct led_netdev_data *trigger_data = led_cdev->trigger_data;
+ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
char copybuf[1024];
int new_mode = -1;
char *p, *token;
strncpy(copybuf, buf, sizeof(copybuf));
copybuf[1023] = 0;
p = copybuf;
-
+
while ((token = strsep(&p, " \t\n")) != NULL) {
if (!*token)
continue;
-
+
if (new_mode == -1)
new_mode = 0;
-
+
if (!strcmp(token, "none"))
new_mode = 0;
else if (!strcmp(token, "tx"))
else
return -EINVAL;
}
-
+
if (new_mode == -1)
return -EINVAL;
-
- write_lock(&trigger_data->lock);
- trigger_data->mode = new_mode;
+
+ write_lock(&trigger_data->lock);
+ trigger_data->mode = new_mode;
set_baseline_state(trigger_data);
write_unlock(&trigger_data->lock);
-
+
return size;
}
static DEVICE_ATTR(mode, 0644, led_mode_show, led_mode_store);
-static ssize_t led_interval_show(struct device *dev,
+static ssize_t led_interval_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct led_netdev_data *trigger_data = led_cdev->trigger_data;
-
+
read_lock(&trigger_data->lock);
sprintf(buf, "%u\n", jiffies_to_msecs(trigger_data->interval));
read_unlock(&trigger_data->lock);
-
+
return strlen(buf) + 1;
}
-static ssize_t led_interval_store(struct device *dev,
+static ssize_t led_interval_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
write_unlock(&trigger_data->lock);
ret = count;
}
-
+
return ret;
}
{
struct net_device *dev = dv;
struct led_netdev_data *trigger_data = container_of(nb, struct led_netdev_data, notifier);
-
+
if (evt != NETDEV_UP && evt != NETDEV_DOWN && evt != NETDEV_CHANGE && evt != NETDEV_REGISTER && evt != NETDEV_UNREGISTER)
return NOTIFY_DONE;
-
+
write_lock(&trigger_data->lock);
if (strcmp(dev->name, trigger_data->device_name))
goto done;
-
+
if (evt == NETDEV_REGISTER) {
if (trigger_data->net_dev != NULL)
dev_put(trigger_data->net_dev);
trigger_data->link_up = 0;
goto done;
}
-
+
if (evt == NETDEV_UNREGISTER && trigger_data->net_dev != NULL) {
dev_put(trigger_data->net_dev);
trigger_data->net_dev = NULL;
goto done;
}
-
+
/* UP / DOWN / CHANGE */
-
+
trigger_data->link_up = (evt != NETDEV_DOWN && netif_carrier_ok(dev));
set_baseline_state(trigger_data);
done:
- write_unlock(&trigger_data->lock);
+ write_unlock(&trigger_data->lock);
return NOTIFY_DONE;
}
struct led_netdev_data *trigger_data = (struct led_netdev_data *)arg;
struct net_device_stats *dev_stats;
unsigned new_activity;
-
+
write_lock(&trigger_data->lock);
-
+
if (!trigger_data->link_up || !trigger_data->net_dev || (trigger_data->mode & (MODE_TX | MODE_RX)) == 0) {
/* we don't need to do timer work, just reflect link state. */
led_set_brightness(trigger_data->led_cdev, ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up) ? LED_FULL : LED_OFF);
goto no_restart;
}
-
+
dev_stats = trigger_data->net_dev->get_stats(trigger_data->net_dev);
new_activity =
((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) +
((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0);
-
+
if (trigger_data->mode & MODE_LINK) {
/* base state is ON (link present) */
/* if there's no link, we don't get this far and the LED is off */
-
+
/* OFF -> ON always */
/* ON -> OFF on activity */
if (trigger_data->led_cdev->brightness == LED_OFF) {
led_set_brightness(trigger_data->led_cdev, LED_FULL);
}
}
-
+
trigger_data->last_activity = new_activity;
mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
trigger_data->led_cdev = led_cdev;
trigger_data->net_dev = NULL;
trigger_data->device_name[0] = 0;
-
+
trigger_data->mode = 0;
trigger_data->interval = msecs_to_jiffies(50);
trigger_data->link_up = 0;
trigger_data->last_activity = 0;
-
+
led_cdev->trigger_data = trigger_data;
rc = device_create_file(led_cdev->dev, &dev_attr_device_name);
if (rc)
goto err_out_mode;
- register_netdevice_notifier(&trigger_data->notifier);
+ register_netdevice_notifier(&trigger_data->notifier);
return;
err_out_mode:
{
struct led_netdev_data *trigger_data = led_cdev->trigger_data;
- if (trigger_data) {
+ if (trigger_data) {
unregister_netdevice_notifier(&trigger_data->notifier);
device_remove_file(led_cdev->dev, &dev_attr_device_name);
device_remove_file(led_cdev->dev, &dev_attr_interval);
write_lock(&trigger_data->lock);
-
+
if (trigger_data->net_dev) {
dev_put(trigger_data->net_dev);
trigger_data->net_dev = NULL;
}
-
+
write_unlock(&trigger_data->lock);
del_timer_sync(&trigger_data->timer);
projects / openwrt.git / blobdiff