diff options
Diffstat (limited to 'packages/linux/linux-openmoko-2.6.24/openwrt-ledtrig-netdev.patch')
-rw-r--r-- | packages/linux/linux-openmoko-2.6.24/openwrt-ledtrig-netdev.patch | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/packages/linux/linux-openmoko-2.6.24/openwrt-ledtrig-netdev.patch b/packages/linux/linux-openmoko-2.6.24/openwrt-ledtrig-netdev.patch new file mode 100644 index 0000000000..668b940d86 --- /dev/null +++ b/packages/linux/linux-openmoko-2.6.24/openwrt-ledtrig-netdev.patch @@ -0,0 +1,473 @@ +Add a netdev LED trigger for all Blinkenlights lovers... +Originally taken from https://dev.openwrt.org/ticket/2776 +Slightly updated for 2.6.24 by Mickey <mickey@openmoko.org>. + +Index: git/drivers/leds/ledtrig-netdev.c +=================================================================== +--- /dev/null ++++ git/drivers/leds/ledtrig-netdev.c +@@ -0,0 +1,438 @@ ++/* ++ * LED Kernel Netdev Trigger ++ * ++ * Toggles the LED to reflect the link and traffic state of a named net device ++ * ++ * Copyright 2007 Oliver Jowett <oliver@opencloud.com> ++ * ++ * Derived from ledtrig-timer.c which is: ++ * Copyright 2005-2006 Openedhand Ltd. ++ * Author: Richard Purdie <rpurdie@openedhand.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ * ++ */ ++ ++#include <linux/module.h> ++#include <linux/jiffies.h> ++#include <linux/kernel.h> ++#include <linux/init.h> ++#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 "leds.h" ++ ++/* ++ * Configurable sysfs attributes: ++ * ++ * device_name - network device name to monitor ++ * ++ * interval - duration of LED blink, in milliseconds ++ * ++ * mode - either "none" (LED is off) or a space separated list of one or more of: ++ * link: LED's normal state reflects whether the link is up (has carrier) or not ++ * tx: LED blinks on transmitted data ++ * rx: LED blinks on receive data ++ * ++ * Some suggestions: ++ * ++ * Simple link status LED: ++ * $ echo netdev >someled/trigger ++ * $ echo eth0 >someled/device_name ++ * $ echo link >someled/mode ++ * ++ * Ethernet-style link/activity LED: ++ * $ echo netdev >someled/trigger ++ * $ echo eth0 >someled/device_name ++ * $ echo "link tx rx" >someled/mode ++ * ++ * Modem-style tx/rx LEDs: ++ * $ echo netdev >led1/trigger ++ * $ echo ppp0 >led1/device_name ++ * $ echo tx >led1/mode ++ * $ echo netdev >led2/trigger ++ * $ echo ppp0 >led2/device_name ++ * $ echo rx >led2/mode ++ * ++ */ ++ ++#define MODE_LINK 1 ++#define MODE_TX 2 ++#define MODE_RX 4 ++ ++struct led_netdev_data { ++ rwlock_t lock; ++ ++ struct timer_list timer; ++ struct notifier_block notifier; ++ ++ struct led_classdev *led_cdev; ++ struct net_device *net_dev; ++ ++ char device_name[IFNAMSIZ]; ++ unsigned interval; ++ unsigned mode; ++ unsigned link_up; ++ unsigned last_activity; ++}; ++ ++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); ++} ++ ++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, ++ 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 */ ++ trigger_data->net_dev = dev_get_by_name(&init_net, trigger_data->device_name); ++ 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); ++ 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 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 { ++ char *p = buf; ++ if (trigger_data->mode & MODE_LINK) ++ strcat(buf, "link "); ++ if (trigger_data->mode & MODE_TX) ++ strcat(buf, "tx "); ++ if (trigger_data->mode & MODE_RX) ++ strcat(buf, "rx "); ++ strcat(buf, "\n"); ++ } ++ ++ read_unlock(&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 led_classdev *led_cdev = dev_get_drvdata(dev); ++ struct led_netdev_data *trigger_data = led_cdev->trigger_data; ++ char copybuf[1024]; ++ 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; ++ 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")) ++ new_mode |= MODE_TX; ++ else if (!strcmp(token, "rx")) ++ new_mode |= MODE_RX; ++ else if (!strcmp(token, "link")) ++ new_mode |= MODE_LINK; ++ else ++ return -EINVAL; ++ } ++ ++ if (new_mode == -1) ++ return -EINVAL; ++ ++ 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, ++ 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, ++ 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; ++ int ret = -EINVAL; ++ char *after; ++ unsigned long value = simple_strtoul(buf, &after, 10); ++ size_t count = after - buf; ++ ++ if (*after && isspace(*after)) ++ count++; ++ ++ /* impose some basic bounds on the timer interval */ ++ if (count == size && value >= 5 && value <= 10000) { ++ write_lock(&trigger_data->lock); ++ trigger_data->interval = msecs_to_jiffies(value); ++ set_baseline_state(trigger_data); // resets timer ++ write_unlock(&trigger_data->lock); ++ ret = count; ++ } ++ ++ return ret; ++} ++ ++static DEVICE_ATTR(interval, 0644, led_interval_show, led_interval_store); ++ ++static int netdev_trig_notify(struct notifier_block *nb, ++ unsigned long evt, ++ void *dv) ++{ ++ 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); ++ dev_hold(dev); ++ trigger_data->net_dev = 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); ++ return NOTIFY_DONE; ++} ++ ++/* here's the real work! */ ++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) { ++ led_set_brightness(trigger_data->led_cdev, LED_FULL); ++ } else if (trigger_data->last_activity != new_activity) { ++ led_set_brightness(trigger_data->led_cdev, LED_OFF); ++ } ++ } else { ++ /* base state is OFF */ ++ /* ON -> OFF always */ ++ /* OFF -> ON on activity */ ++ if (trigger_data->led_cdev->brightness == LED_FULL) { ++ led_set_brightness(trigger_data->led_cdev, LED_OFF); ++ } else if (trigger_data->last_activity != new_activity) { ++ led_set_brightness(trigger_data->led_cdev, LED_FULL); ++ } ++ } ++ ++ trigger_data->last_activity = new_activity; ++ mod_timer(&trigger_data->timer, jiffies + trigger_data->interval); ++ ++no_restart: ++ write_unlock(&trigger_data->lock); ++} ++ ++static void netdev_trig_activate(struct led_classdev *led_cdev) ++{ ++ struct led_netdev_data *trigger_data; ++ int rc; ++ ++ trigger_data = kzalloc(sizeof(struct led_netdev_data), GFP_KERNEL); ++ if (!trigger_data) ++ return; ++ ++ rwlock_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); ++ ++ 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; ++ rc = device_create_file(led_cdev->dev, &dev_attr_mode); ++ if (rc) ++ goto err_out_device_name; ++ rc = device_create_file(led_cdev->dev, &dev_attr_interval); ++ if (rc) ++ goto err_out_mode; ++ ++ register_netdevice_notifier(&trigger_data->notifier); ++ return; ++ ++err_out_mode: ++ device_remove_file(led_cdev->dev, &dev_attr_mode); ++err_out_device_name: ++ device_remove_file(led_cdev->dev, &dev_attr_device_name); ++err_out: ++ led_cdev->trigger_data = NULL; ++ kfree(trigger_data); ++} ++ ++static void netdev_trig_deactivate(struct led_classdev *led_cdev) ++{ ++ struct led_netdev_data *trigger_data = led_cdev->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_mode); ++ 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); ++ ++ kfree(trigger_data); ++ } ++} ++ ++static struct led_trigger netdev_led_trigger = { ++ .name = "netdev", ++ .activate = netdev_trig_activate, ++ .deactivate = netdev_trig_deactivate, ++}; ++ ++static int __init netdev_trig_init(void) ++{ ++ return led_trigger_register(&netdev_led_trigger); ++} ++ ++static void __exit netdev_trig_exit(void) ++{ ++ led_trigger_unregister(&netdev_led_trigger); ++} ++ ++module_init(netdev_trig_init); ++module_exit(netdev_trig_exit); ++ ++MODULE_AUTHOR("Oliver Jowett <oliver@opencloud.com>"); ++MODULE_DESCRIPTION("Netdev LED trigger"); ++MODULE_LICENSE("GPL"); +Index: git/drivers/leds/Makefile +=================================================================== +--- git.orig/drivers/leds/Makefile ++++ git/drivers/leds/Makefile +@@ -26,3 +26,5 @@ obj-$(CONFIG_LEDS_NEO1973_GTA02) += leds + obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o + obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o + obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o ++obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o ++ +Index: git/drivers/leds/Kconfig +=================================================================== +--- git.orig/drivers/leds/Kconfig ++++ git/drivers/leds/Kconfig +@@ -159,4 +159,11 @@ config LEDS_TRIGGER_HEARTBEAT + load average. + If unsure, say Y. + ++config LEDS_TRIGGER_NETDEV ++ tristate "LED Network Device Trigger" ++ depends on LEDS_TRIGGERS ++ help ++ This allows LEDs to be controlled by Network Device activity. ++ If unsure, say Y. ++ + endif # NEW_LEDS |