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more ledtrig-netdev clean ups 

SVN-Revision: 12096
lede-17.01
John Crispin 2008-08-04 15:51:47 +00:00
parent 3ea42e8083
commit b5cc22dfe5
1 changed files with 70 additions and 56 deletions
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126
target/linux/generic-2.6/files-2.6.26/drivers/leds/ledtrig-netdev.c
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@ -27,6 +27,12 @@
#include <linux/timer.h> #include <linux/timer.h>
#include <linux/ctype.h> #include <linux/ctype.h>
#include <linux/leds.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" #include "leds.h"
/* /*
@ -69,13 +75,13 @@
struct led_netdev_data { struct led_netdev_data {
rwlock_t lock; rwlock_t lock;
struct timer_list timer; struct timer_list timer;
struct notifier_block notifier; struct notifier_block notifier;
struct led_classdev *led_cdev; struct led_classdev *led_cdev;
struct net_device *net_dev; struct net_device *net_dev;
char device_name[IFNAMSIZ]; char device_name[IFNAMSIZ];
unsigned interval; unsigned interval;
unsigned mode; unsigned mode;
@ -84,55 +90,63 @@ struct led_netdev_data {
}; };
static void set_baseline_state(struct led_netdev_data *trigger_data) static void set_baseline_state(struct led_netdev_data *trigger_data)
{ {
if ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up) if ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up)
led_set_brightness(trigger_data->led_cdev, LED_FULL); led_set_brightness(trigger_data->led_cdev, LED_FULL);
else else
led_set_brightness(trigger_data->led_cdev, LED_OFF); led_set_brightness(trigger_data->led_cdev, LED_OFF);
if ((trigger_data->mode & (MODE_TX | MODE_RX)) != 0 && trigger_data->link_up) if ((trigger_data->mode & (MODE_TX | MODE_RX)) != 0 && trigger_data->link_up)
mod_timer(&trigger_data->timer, jiffies + trigger_data->interval); mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
else else
del_timer(&trigger_data->timer); del_timer(&trigger_data->timer);
} }
static ssize_t led_device_name_show(struct device *dev, 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_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;
read_lock(&trigger_data->lock); read_lock(&trigger_data->lock);
sprintf(buf, "%s\n", trigger_data->device_name); sprintf(buf, "%s\n", trigger_data->device_name);
read_unlock(&trigger_data->lock); read_unlock(&trigger_data->lock);
return strlen(buf) + 1; 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 device_attribute *attr, const char *buf, size_t size)
{ {
struct led_classdev *led_cdev = dev_get_drvdata(dev); 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;
if (size < 0 || size >= IFNAMSIZ) if (size < 0 || size >= IFNAMSIZ)
return -EINVAL; return -EINVAL;
write_lock(&trigger_data->lock); write_lock(&trigger_data->lock);
strcpy(trigger_data->device_name, buf); strcpy(trigger_data->device_name, buf);
if (size > 0 && trigger_data->device_name[size-1] == '\n') if (size > 0 && trigger_data->device_name[size-1] == '\n')
trigger_data->device_name[size-1] = 0; trigger_data->device_name[size-1] = 0;
if (trigger_data->device_name[0] != 0) { if (trigger_data->device_name[0] != 0) {
/* check for existing device to update from */ /* 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); trigger_data->net_dev = dev_get_by_name(trigger_data->device_name);
#endif
if (trigger_data->net_dev != NULL) if (trigger_data->net_dev != NULL)
trigger_data->link_up = (dev_get_flags(trigger_data->net_dev) & IFF_LOWER_UP) != 0; 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 */ set_baseline_state(trigger_data); /* updates LEDs, may start timers */
} }
write_unlock(&trigger_data->lock); write_unlock(&trigger_data->lock);
return size; 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_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;
read_lock(&trigger_data->lock); read_lock(&trigger_data->lock);
if (trigger_data->mode == 0) { if (trigger_data->mode == 0) {
strcpy(buf, "none\n"); strcpy(buf, "none\n");
} else { } else {
if (trigger_data->mode & MODE_LINK) if (trigger_data->mode & MODE_LINK)
strcat(buf, "link "); strcat(buf, "link ");
if (trigger_data->mode & MODE_TX) if (trigger_data->mode & MODE_TX)
strcat(buf, "tx "); strcat(buf, "tx ");
@ -157,17 +171,17 @@ static ssize_t led_mode_show(struct device *dev,
strcat(buf, "rx "); strcat(buf, "rx ");
strcat(buf, "\n"); strcat(buf, "\n");
} }
read_unlock(&trigger_data->lock); read_unlock(&trigger_data->lock);
return strlen(buf)+1; 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 device_attribute *attr, const char *buf, size_t size)
{ {
struct led_classdev *led_cdev = dev_get_drvdata(dev); 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]; char copybuf[1024];
int new_mode = -1; int new_mode = -1;
char *p, *token; char *p, *token;
@ -176,14 +190,14 @@ static ssize_t led_mode_store(struct device *dev,
strncpy(copybuf, buf, sizeof(copybuf)); strncpy(copybuf, buf, sizeof(copybuf));
copybuf[1023] = 0; copybuf[1023] = 0;
p = copybuf; p = copybuf;
while ((token = strsep(&p, " \t\n")) != NULL) { while ((token = strsep(&p, " \t\n")) != NULL) {
if (!*token) if (!*token)
continue; continue;
if (new_mode == -1) if (new_mode == -1)
new_mode = 0; new_mode = 0;
if (!strcmp(token, "none")) if (!strcmp(token, "none"))
new_mode = 0; new_mode = 0;
else if (!strcmp(token, "tx")) else if (!strcmp(token, "tx"))
@ -195,34 +209,34 @@ static ssize_t led_mode_store(struct device *dev,
else else
return -EINVAL; return -EINVAL;
} }
if (new_mode == -1) if (new_mode == -1)
return -EINVAL; return -EINVAL;
write_lock(&trigger_data->lock); write_lock(&trigger_data->lock);
trigger_data->mode = new_mode; trigger_data->mode = new_mode;
set_baseline_state(trigger_data); set_baseline_state(trigger_data);
write_unlock(&trigger_data->lock); write_unlock(&trigger_data->lock);
return size; return size;
} }
static DEVICE_ATTR(mode, 0644, led_mode_show, led_mode_store); 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 device_attribute *attr, char *buf)
{ {
struct led_classdev *led_cdev = dev_get_drvdata(dev); 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;
read_lock(&trigger_data->lock); read_lock(&trigger_data->lock);
sprintf(buf, "%u\n", jiffies_to_msecs(trigger_data->interval)); sprintf(buf, "%u\n", jiffies_to_msecs(trigger_data->interval));
read_unlock(&trigger_data->lock); read_unlock(&trigger_data->lock);
return strlen(buf) + 1; 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 device_attribute *attr, const char *buf, size_t size)
{ {
struct led_classdev *led_cdev = dev_get_drvdata(dev); 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); write_unlock(&trigger_data->lock);
ret = count; ret = count;
} }
return ret; return ret;
} }
@ -255,15 +269,15 @@ static int netdev_trig_notify(struct notifier_block *nb,
{ {
struct net_device *dev = dv; struct net_device *dev = dv;
struct led_netdev_data *trigger_data = container_of(nb, struct led_netdev_data, notifier); 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)
return NOTIFY_DONE; return NOTIFY_DONE;
write_lock(&trigger_data->lock); write_lock(&trigger_data->lock);
if (strcmp(dev->name, trigger_data->device_name)) if (strcmp(dev->name, trigger_data->device_name))
goto done; goto done;
if (evt == NETDEV_REGISTER) { if (evt == NETDEV_REGISTER) {
if (trigger_data->net_dev != NULL) if (trigger_data->net_dev != NULL)
dev_put(trigger_data->net_dev); dev_put(trigger_data->net_dev);
@ -272,20 +286,20 @@ static int netdev_trig_notify(struct notifier_block *nb,
trigger_data->link_up = 0; trigger_data->link_up = 0;
goto done; goto done;
} }
if (evt == NETDEV_UNREGISTER && trigger_data->net_dev != NULL) { if (evt == NETDEV_UNREGISTER && trigger_data->net_dev != NULL) {
dev_put(trigger_data->net_dev); dev_put(trigger_data->net_dev);
trigger_data->net_dev = NULL; trigger_data->net_dev = NULL;
goto done; goto done;
} }
/* UP / DOWN / CHANGE */ /* UP / DOWN / CHANGE */
trigger_data->link_up = (evt != NETDEV_DOWN && netif_carrier_ok(dev)); trigger_data->link_up = (evt != NETDEV_DOWN && netif_carrier_ok(dev));
set_baseline_state(trigger_data); set_baseline_state(trigger_data);
done: done:
write_unlock(&trigger_data->lock); write_unlock(&trigger_data->lock);
return NOTIFY_DONE; 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 led_netdev_data *trigger_data = (struct led_netdev_data *)arg;
struct net_device_stats *dev_stats; struct net_device_stats *dev_stats;
unsigned new_activity; unsigned new_activity;
write_lock(&trigger_data->lock); write_lock(&trigger_data->lock);
if (!trigger_data->link_up || !trigger_data->net_dev || (trigger_data->mode & (MODE_TX | MODE_RX)) == 0) { 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. */ /* 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); led_set_brightness(trigger_data->led_cdev, ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up) ? LED_FULL : LED_OFF);
goto no_restart; goto no_restart;
} }
dev_stats = trigger_data->net_dev->get_stats(trigger_data->net_dev); dev_stats = trigger_data->net_dev->get_stats(trigger_data->net_dev);
new_activity = new_activity =
((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) + ((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) +
((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0); ((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0);
if (trigger_data->mode & MODE_LINK) { if (trigger_data->mode & MODE_LINK) {
/* base state is ON (link present) */ /* base state is ON (link present) */
/* if there's no link, we don't get this far and the LED is off */ /* if there's no link, we don't get this far and the LED is off */
/* OFF -> ON always */ /* OFF -> ON always */
/* ON -> OFF on activity */ /* ON -> OFF on activity */
if (trigger_data->led_cdev->brightness == LED_OFF) { 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); led_set_brightness(trigger_data->led_cdev, LED_FULL);
} }
} }
trigger_data->last_activity = new_activity; trigger_data->last_activity = new_activity;
mod_timer(&trigger_data->timer, jiffies + trigger_data->interval); 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->led_cdev = led_cdev;
trigger_data->net_dev = NULL; trigger_data->net_dev = NULL;
trigger_data->device_name[0] = 0; trigger_data->device_name[0] = 0;
trigger_data->mode = 0; trigger_data->mode = 0;
trigger_data->interval = msecs_to_jiffies(50); trigger_data->interval = msecs_to_jiffies(50);
trigger_data->link_up = 0; trigger_data->link_up = 0;
trigger_data->last_activity = 0; trigger_data->last_activity = 0;
led_cdev->trigger_data = trigger_data; led_cdev->trigger_data = trigger_data;
rc = device_create_file(led_cdev->dev, &dev_attr_device_name); 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) if (rc)
goto err_out_mode; goto err_out_mode;
register_netdevice_notifier(&trigger_data->notifier); register_netdevice_notifier(&trigger_data->notifier);
return; return;
err_out_mode: 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; struct led_netdev_data *trigger_data = led_cdev->trigger_data;
if (trigger_data) { if (trigger_data) {
unregister_netdevice_notifier(&trigger_data->notifier); unregister_netdevice_notifier(&trigger_data->notifier);
device_remove_file(led_cdev->dev, &dev_attr_device_name); 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); device_remove_file(led_cdev->dev, &dev_attr_interval);
write_lock(&trigger_data->lock); write_lock(&trigger_data->lock);
if (trigger_data->net_dev) { if (trigger_data->net_dev) {
dev_put(trigger_data->net_dev); dev_put(trigger_data->net_dev);
trigger_data->net_dev = NULL; trigger_data->net_dev = NULL;
} }
write_unlock(&trigger_data->lock); write_unlock(&trigger_data->lock);
del_timer_sync(&trigger_data->timer); del_timer_sync(&trigger_data->timer);