more ledtrig-netdev clean ups
authorJohn Crispin <john@openwrt.org>
Mon, 4 Aug 2008 15:51:47 +0000 (15:51 +0000)
committerJohn Crispin <john@openwrt.org>
Mon, 4 Aug 2008 15:51:47 +0000 (15:51 +0000)
SVN-Revision: 12096

target/linux/generic-2.6/files-2.6.26/drivers/leds/ledtrig-netdev.c

index 285d0f7..fac3571 100644 (file)
 #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;
@@ -84,55 +90,63 @@ struct led_netdev_data {
 };
 
 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;
 }
 
@@ -143,13 +157,13 @@ static ssize_t led_mode_show(struct device *dev,
 {
        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 ");
@@ -157,17 +171,17 @@ static ssize_t led_mode_show(struct device *dev,
                        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;
@@ -176,14 +190,14 @@ static ssize_t led_mode_store(struct device *dev,
        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"))
@@ -195,34 +209,34 @@ static ssize_t led_mode_store(struct device *dev,
                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);
@@ -243,7 +257,7 @@ static ssize_t led_interval_store(struct device *dev,
                write_unlock(&trigger_data->lock);
                ret = count;
        }
-       
+
        return ret;
 }
 
@@ -255,15 +269,15 @@ static int netdev_trig_notify(struct notifier_block *nb,
 {
        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);
@@ -272,20 +286,20 @@ static int netdev_trig_notify(struct notifier_block *nb,
                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;
 }
 
@@ -295,24 +309,24 @@ static void netdev_trig_timer(unsigned long arg)
        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) {
@@ -330,7 +344,7 @@ static void netdev_trig_timer(unsigned long arg)
                        led_set_brightness(trigger_data->led_cdev, LED_FULL);
                }
        }
-       
+
        trigger_data->last_activity = new_activity;
        mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
 
@@ -357,12 +371,12 @@ static void netdev_trig_activate(struct led_classdev *led_cdev)
        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);
@@ -375,7 +389,7 @@ static void netdev_trig_activate(struct led_classdev *led_cdev)
        if (rc)
                goto err_out_mode;
 
-       register_netdevice_notifier(&trigger_data->notifier);   
+       register_netdevice_notifier(&trigger_data->notifier);
        return;
 
 err_out_mode:
@@ -391,7 +405,7 @@ static void netdev_trig_deactivate(struct led_classdev *led_cdev)
 {
        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);
@@ -399,12 +413,12 @@ static void netdev_trig_deactivate(struct led_classdev *led_cdev)
                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);