#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/device.h>
-#include <linux/sysdev.h>
#include <linux/netdevice.h>
#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"
#define MODE_RX 4
struct led_netdev_data {
- rwlock_t lock;
+ spinlock_t lock;
- struct timer_list timer;
+ struct delayed_work work;
struct notifier_block notifier;
struct led_classdev *led_cdev;
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);
+ schedule_delayed_work(&trigger_data->work, trigger_data->interval);
}
static ssize_t led_device_name_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ 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);
+ spin_lock_bh(&trigger_data->lock);
sprintf(buf, "%s\n", trigger_data->device_name);
- read_unlock(&trigger_data->lock);
+ spin_unlock_bh(&trigger_data->lock);
return strlen(buf) + 1;
}
-#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 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)
+ if (size >= IFNAMSIZ)
return -EINVAL;
- write_lock(&trigger_data->lock);
+ cancel_delayed_work_sync(&trigger_data->work);
+
+ spin_lock_bh(&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;
+ trigger_data->link_up = 0;
+ trigger_data->last_activity = 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);
+ set_baseline_state(trigger_data);
+ spin_unlock_bh(&trigger_data->lock);
+
return size;
}
static DEVICE_ATTR(device_name, 0644, led_device_name_show, led_device_name_store);
static ssize_t led_mode_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ 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);
+ spin_lock_bh(&trigger_data->lock);
if (trigger_data->mode == 0) {
strcpy(buf, "none\n");
strcat(buf, "\n");
}
- read_unlock(&trigger_data->lock);
+ spin_unlock_bh(&trigger_data->lock);
return strlen(buf)+1;
}
static ssize_t led_mode_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t size)
+ 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;
- char copybuf[1024];
+ char copybuf[128];
int new_mode = -1;
char *p, *token;
/* take a copy since we don't want to trash the inbound buffer when using strsep */
strncpy(copybuf, buf, sizeof(copybuf));
- copybuf[1023] = 0;
+ copybuf[sizeof(copybuf) - 1] = 0;
p = copybuf;
while ((token = strsep(&p, " \t\n")) != NULL) {
if (new_mode == -1)
return -EINVAL;
- write_lock(&trigger_data->lock);
+ cancel_delayed_work_sync(&trigger_data->work);
+
+ spin_lock_bh(&trigger_data->lock);
trigger_data->mode = new_mode;
set_baseline_state(trigger_data);
- write_unlock(&trigger_data->lock);
+ spin_unlock_bh(&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,
- struct device_attribute *attr, char *buf)
+ 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);
+ spin_lock_bh(&trigger_data->lock);
sprintf(buf, "%u\n", jiffies_to_msecs(trigger_data->interval));
- read_unlock(&trigger_data->lock);
+ spin_unlock_bh(&trigger_data->lock);
return strlen(buf) + 1;
}
static ssize_t led_interval_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t size)
+ 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;
unsigned long value = simple_strtoul(buf, &after, 10);
size_t count = after - buf;
- if (*after && isspace(*after))
+ if (isspace(*after))
count++;
/* impose some basic bounds on the timer interval */
if (count == size && value >= 5 && value <= 10000) {
- write_lock(&trigger_data->lock);
+ cancel_delayed_work_sync(&trigger_data->work);
+
+ spin_lock_bh(&trigger_data->lock);
trigger_data->interval = msecs_to_jiffies(value);
- set_baseline_state(trigger_data); // resets timer
- write_unlock(&trigger_data->lock);
+ set_baseline_state(trigger_data); /* resets timer */
+ spin_unlock_bh(&trigger_data->lock);
+
ret = count;
}
unsigned long evt,
void *dv)
{
- struct net_device *dev = dv;
+ struct net_device *dev = netdev_notifier_info_to_dev((struct netdev_notifier_info *) 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)
+ if (evt != NETDEV_UP && evt != NETDEV_DOWN && evt != NETDEV_CHANGE && evt != NETDEV_REGISTER && evt != NETDEV_UNREGISTER && evt != NETDEV_CHANGENAME)
return NOTIFY_DONE;
- write_lock(&trigger_data->lock);
-
if (strcmp(dev->name, trigger_data->device_name))
- goto done;
+ return NOTIFY_DONE;
- if (evt == NETDEV_REGISTER) {
+ cancel_delayed_work_sync(&trigger_data->work);
+
+ spin_lock_bh(&trigger_data->lock);
+
+ if (evt == NETDEV_REGISTER || evt == NETDEV_CHANGENAME) {
if (trigger_data->net_dev != NULL)
dev_put(trigger_data->net_dev);
+
dev_hold(dev);
trigger_data->net_dev = dev;
trigger_data->link_up = 0;
set_baseline_state(trigger_data);
done:
- write_unlock(&trigger_data->lock);
+ spin_unlock_bh(&trigger_data->lock);
return NOTIFY_DONE;
}
/* here's the real work! */
-static void netdev_trig_timer(unsigned long arg)
+static void netdev_trig_work(struct work_struct *work)
{
- struct led_netdev_data *trigger_data = (struct led_netdev_data *)arg;
- const struct net_device_stats *dev_stats;
+ struct led_netdev_data *trigger_data = container_of(work, struct led_netdev_data, work.work);
+ struct rtnl_link_stats64 *dev_stats;
unsigned new_activity;
-
- write_lock(&trigger_data->lock);
+ struct rtnl_link_stats64 temp;
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;
+ return;
}
- dev_stats = dev_get_stats(trigger_data->net_dev);
+ dev_stats = dev_get_stats(trigger_data->net_dev, &temp);
new_activity =
((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) +
((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0);
}
trigger_data->last_activity = new_activity;
- mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
-
-no_restart:
- write_unlock(&trigger_data->lock);
+ schedule_delayed_work(&trigger_data->work, trigger_data->interval);
}
static void netdev_trig_activate(struct led_classdev *led_cdev)
if (!trigger_data)
return;
- rwlock_init(&trigger_data->lock);
+ spin_lock_init(&trigger_data->lock);
trigger_data->notifier.notifier_call = netdev_trig_notify;
trigger_data->notifier.priority = 10;
- setup_timer(&trigger_data->timer, netdev_trig_timer, (unsigned long) trigger_data);
+ INIT_DELAYED_WORK(&trigger_data->work, netdev_trig_work);
trigger_data->led_cdev = led_cdev;
trigger_data->net_dev = NULL;
device_remove_file(led_cdev->dev, &dev_attr_mode);
device_remove_file(led_cdev->dev, &dev_attr_interval);
- write_lock(&trigger_data->lock);
+ cancel_delayed_work_sync(&trigger_data->work);
+
+ spin_lock_bh(&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);
+ spin_unlock_bh(&trigger_data->lock);
kfree(trigger_data);
}
projects / openwrt / openwrt.git / blobdiff