SUBMENU:=$(LEDS_MENU)
TITLE:=LED NETDEV Trigger
KCONFIG:=CONFIG_LEDS_TRIGGER_NETDEV
- FILES:=$(LINUX_DIR)/drivers/leds/ledtrig-netdev.ko
+ FILES:=$(LINUX_DIR)/drivers/leds/trigger/ledtrig-netdev.ko
AUTOLOAD:=$(call AutoLoad,50,ledtrig-netdev)
endef
endif # NEW_LEDS
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
-@@ -63,3 +63,4 @@ obj-$(CONFIG_LEDS_DAC124S085) += leds-d
+@@ -62,3 +62,4 @@ obj-$(CONFIG_LEDS_DAC124S085) += leds-d
+
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGERS) += trigger/
- obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o
+obj-$(CONFIG_LEDS_TRIGGER_ADM5120_SWITCH) += ledtrig-adm5120-switch.o
--- /dev/null
+From 06f502f57d0d7728f9fa0f157ec5e4111ddb98f6 Mon Sep 17 00:00:00 2001
+From: Ben Whitten <ben.whitten@gmail.com>
+Date: Sun, 10 Dec 2017 21:17:55 +0000
+Subject: [PATCH] leds: trigger: Introduce a NETDEV trigger
+
+This commit introduces a NETDEV trigger for named device
+activity. Available triggers are link, rx, and tx.
+
+Signed-off-by: Ben Whitten <ben.whitten@gmail.com>
+Acked-by: Pavel Machek <pavel@ucw.cz>
+Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
+---
+ .../ABI/testing/sysfs-class-led-trigger-netdev | 45 ++
+ drivers/leds/trigger/Kconfig | 7 +
+ drivers/leds/trigger/Makefile | 1 +
+ drivers/leds/trigger/ledtrig-netdev.c | 496 +++++++++++++++++++++
+ 4 files changed, 549 insertions(+)
+ create mode 100644 Documentation/ABI/testing/sysfs-class-led-trigger-netdev
+ create mode 100644 drivers/leds/trigger/ledtrig-netdev.c
+
+--- /dev/null
++++ b/Documentation/ABI/testing/sysfs-class-led-trigger-netdev
+@@ -0,0 +1,45 @@
++What: /sys/class/leds/<led>/device_name
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Specifies the network device name to monitor.
++
++What: /sys/class/leds/<led>/interval
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Specifies the duration of the LED blink in milliseconds.
++ Defaults to 50 ms.
++
++What: /sys/class/leds/<led>/link
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Signal the link state of the named network device.
++ If set to 0 (default), the LED's normal state is off.
++ If set to 1, the LED's normal state reflects the link state
++ of the named network device.
++ Setting this value also immediately changes the LED state.
++
++What: /sys/class/leds/<led>/tx
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Signal transmission of data on the named network device.
++ If set to 0 (default), the LED will not blink on transmission.
++ If set to 1, the LED will blink for the milliseconds specified
++ in interval to signal transmission.
++
++What: /sys/class/leds/<led>/rx
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Signal reception of data on the named network device.
++ If set to 0 (default), the LED will not blink on reception.
++ If set to 1, the LED will blink for the milliseconds specified
++ in interval to signal reception.
+--- a/drivers/leds/trigger/Kconfig
++++ b/drivers/leds/trigger/Kconfig
+@@ -126,4 +126,11 @@ config LEDS_TRIGGER_PANIC
+ a different trigger.
+ If unsure, say Y.
+
++config LEDS_TRIGGER_NETDEV
++ tristate "LED Netdev Trigger"
++ depends on NET && LEDS_TRIGGERS
++ help
++ This allows LEDs to be controlled by network device activity.
++ If unsure, say Y.
++
+ endif # LEDS_TRIGGERS
+--- a/drivers/leds/trigger/Makefile
++++ b/drivers/leds/trigger/Makefile
+@@ -11,3 +11,4 @@ obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) +=
+ obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT) += ledtrig-transient.o
+ obj-$(CONFIG_LEDS_TRIGGER_CAMERA) += ledtrig-camera.o
+ obj-$(CONFIG_LEDS_TRIGGER_PANIC) += ledtrig-panic.o
++obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o
+--- /dev/null
++++ b/drivers/leds/trigger/ledtrig-netdev.c
+@@ -0,0 +1,496 @@
++// SPDX-License-Identifier: GPL-2.0
++// Copyright 2017 Ben Whitten <ben.whitten@gmail.com>
++// Copyright 2007 Oliver Jowett <oliver@opencloud.com>
++//
++// LED Kernel Netdev Trigger
++//
++// Toggles the LED to reflect the link and traffic state of a named net device
++//
++// Derived from ledtrig-timer.c which is:
++// Copyright 2005-2006 Openedhand Ltd.
++// Author: Richard Purdie <rpurdie@openedhand.com>
++
++#include <linux/atomic.h>
++#include <linux/ctype.h>
++#include <linux/device.h>
++#include <linux/init.h>
++#include <linux/jiffies.h>
++#include <linux/kernel.h>
++#include <linux/leds.h>
++#include <linux/list.h>
++#include <linux/module.h>
++#include <linux/netdevice.h>
++#include <linux/spinlock.h>
++#include <linux/timer.h>
++#include "../leds.h"
++
++/*
++ * Configurable sysfs attributes:
++ *
++ * device_name - network device name to monitor
++ * interval - duration of LED blink, in milliseconds
++ * 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
++ *
++ */
++
++struct led_netdev_data {
++ spinlock_t lock;
++
++ struct delayed_work work;
++ struct notifier_block notifier;
++
++ struct led_classdev *led_cdev;
++ struct net_device *net_dev;
++
++ char device_name[IFNAMSIZ];
++ atomic_t interval;
++ unsigned int last_activity;
++
++ unsigned long mode;
++#define NETDEV_LED_LINK 0
++#define NETDEV_LED_TX 1
++#define NETDEV_LED_RX 2
++#define NETDEV_LED_MODE_LINKUP 3
++};
++
++enum netdev_led_attr {
++ NETDEV_ATTR_LINK,
++ NETDEV_ATTR_TX,
++ NETDEV_ATTR_RX
++};
++
++static void set_baseline_state(struct led_netdev_data *trigger_data)
++{
++ int current_brightness;
++ struct led_classdev *led_cdev = trigger_data->led_cdev;
++
++ current_brightness = led_cdev->brightness;
++ if (current_brightness)
++ led_cdev->blink_brightness = current_brightness;
++ if (!led_cdev->blink_brightness)
++ led_cdev->blink_brightness = led_cdev->max_brightness;
++
++ if (!test_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode))
++ led_set_brightness(led_cdev, LED_OFF);
++ else {
++ if (test_bit(NETDEV_LED_LINK, &trigger_data->mode))
++ led_set_brightness(led_cdev,
++ led_cdev->blink_brightness);
++ else
++ led_set_brightness(led_cdev, LED_OFF);
++
++ /* If we are looking for RX/TX start periodically
++ * checking stats
++ */
++ if (test_bit(NETDEV_LED_TX, &trigger_data->mode) ||
++ test_bit(NETDEV_LED_RX, &trigger_data->mode))
++ schedule_delayed_work(&trigger_data->work, 0);
++ }
++}
++
++static ssize_t 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;
++ ssize_t len;
++
++ spin_lock_bh(&trigger_data->lock);
++ len = sprintf(buf, "%s\n", trigger_data->device_name);
++ spin_unlock_bh(&trigger_data->lock);
++
++ return len;
++}
++
++static ssize_t 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 >= IFNAMSIZ)
++ return -EINVAL;
++
++ 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;
++ }
++
++ strncpy(trigger_data->device_name, buf, size);
++ if (size > 0 && trigger_data->device_name[size - 1] == '\n')
++ trigger_data->device_name[size - 1] = 0;
++
++ if (trigger_data->device_name[0] != 0)
++ trigger_data->net_dev =
++ dev_get_by_name(&init_net, trigger_data->device_name);
++
++ clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ if (trigger_data->net_dev != NULL)
++ if (netif_carrier_ok(trigger_data->net_dev))
++ set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++
++ trigger_data->last_activity = 0;
++
++ set_baseline_state(trigger_data);
++ spin_unlock_bh(&trigger_data->lock);
++
++ return size;
++}
++
++static DEVICE_ATTR_RW(device_name);
++
++static ssize_t netdev_led_attr_show(struct device *dev, char *buf,
++ enum netdev_led_attr attr)
++{
++ struct led_classdev *led_cdev = dev_get_drvdata(dev);
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++ int bit;
++
++ switch (attr) {
++ case NETDEV_ATTR_LINK:
++ bit = NETDEV_LED_LINK;
++ break;
++ case NETDEV_ATTR_TX:
++ bit = NETDEV_LED_TX;
++ break;
++ case NETDEV_ATTR_RX:
++ bit = NETDEV_LED_RX;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ return sprintf(buf, "%u\n", test_bit(bit, &trigger_data->mode));
++}
++
++static ssize_t netdev_led_attr_store(struct device *dev, const char *buf,
++ size_t size, enum netdev_led_attr attr)
++{
++ struct led_classdev *led_cdev = dev_get_drvdata(dev);
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++ unsigned long state;
++ int ret;
++ int bit;
++
++ ret = kstrtoul(buf, 0, &state);
++ if (ret)
++ return ret;
++
++ switch (attr) {
++ case NETDEV_ATTR_LINK:
++ bit = NETDEV_LED_LINK;
++ break;
++ case NETDEV_ATTR_TX:
++ bit = NETDEV_LED_TX;
++ break;
++ case NETDEV_ATTR_RX:
++ bit = NETDEV_LED_RX;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ if (state)
++ set_bit(bit, &trigger_data->mode);
++ else
++ clear_bit(bit, &trigger_data->mode);
++
++ set_baseline_state(trigger_data);
++
++ return size;
++}
++
++static ssize_t link_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_LINK);
++}
++
++static ssize_t link_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_LINK);
++}
++
++static DEVICE_ATTR_RW(link);
++
++static ssize_t tx_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_TX);
++}
++
++static ssize_t tx_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_TX);
++}
++
++static DEVICE_ATTR_RW(tx);
++
++static ssize_t rx_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_RX);
++}
++
++static ssize_t rx_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_RX);
++}
++
++static DEVICE_ATTR_RW(rx);
++
++static ssize_t 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;
++
++ return sprintf(buf, "%u\n",
++ jiffies_to_msecs(atomic_read(&trigger_data->interval)));
++}
++
++static ssize_t 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;
++ unsigned long value;
++ int ret;
++
++ ret = kstrtoul(buf, 0, &value);
++ if (ret)
++ return ret;
++
++ /* impose some basic bounds on the timer interval */
++ if (value >= 5 && value <= 10000) {
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ atomic_set(&trigger_data->interval, msecs_to_jiffies(value));
++ set_baseline_state(trigger_data); /* resets timer */
++ }
++
++ return size;
++}
++
++static DEVICE_ATTR_RW(interval);
++
++static int netdev_trig_notify(struct notifier_block *nb,
++ unsigned long evt, void *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
++ && evt != NETDEV_CHANGENAME)
++ return NOTIFY_DONE;
++
++ if (strcmp(dev->name, trigger_data->device_name))
++ return NOTIFY_DONE;
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ spin_lock_bh(&trigger_data->lock);
++
++ clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ switch (evt) {
++ case NETDEV_REGISTER:
++ if (trigger_data->net_dev)
++ dev_put(trigger_data->net_dev);
++ dev_hold(dev);
++ trigger_data->net_dev = dev;
++ break;
++ case NETDEV_CHANGENAME:
++ case NETDEV_UNREGISTER:
++ if (trigger_data->net_dev) {
++ dev_put(trigger_data->net_dev);
++ trigger_data->net_dev = NULL;
++ }
++ break;
++ case NETDEV_UP:
++ case NETDEV_CHANGE:
++ if (netif_carrier_ok(dev))
++ set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ break;
++ }
++
++ set_baseline_state(trigger_data);
++
++ spin_unlock_bh(&trigger_data->lock);
++
++ return NOTIFY_DONE;
++}
++
++/* here's the real work! */
++static void netdev_trig_work(struct work_struct *work)
++{
++ struct led_netdev_data *trigger_data = container_of(work,
++ struct
++ led_netdev_data,
++ work.work);
++ struct rtnl_link_stats64 *dev_stats;
++ unsigned int new_activity;
++ struct rtnl_link_stats64 temp;
++ unsigned long interval;
++ int invert;
++
++ /* If we dont have a device, insure we are off */
++ if (!trigger_data->net_dev) {
++ led_set_brightness(trigger_data->led_cdev, LED_OFF);
++ return;
++ }
++
++ /* If we are not looking for RX/TX then return */
++ if (!test_bit(NETDEV_LED_TX, &trigger_data->mode) &&
++ !test_bit(NETDEV_LED_RX, &trigger_data->mode))
++ return;
++
++ dev_stats = dev_get_stats(trigger_data->net_dev, &temp);
++ new_activity =
++ (test_bit(NETDEV_LED_TX, &trigger_data->mode) ?
++ dev_stats->tx_packets : 0) +
++ (test_bit(NETDEV_LED_RX, &trigger_data->mode) ?
++ dev_stats->rx_packets : 0);
++
++ if (trigger_data->last_activity != new_activity) {
++ led_stop_software_blink(trigger_data->led_cdev);
++
++ invert = test_bit(NETDEV_LED_LINK, &trigger_data->mode);
++ interval = jiffies_to_msecs(
++ atomic_read(&trigger_data->interval));
++ /* base state is ON (link present) */
++ led_blink_set_oneshot(trigger_data->led_cdev,
++ &interval,
++ &interval,
++ invert);
++ trigger_data->last_activity = new_activity;
++ }
++
++ schedule_delayed_work(&trigger_data->work,
++ (atomic_read(&trigger_data->interval)*2));
++}
++
++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;
++
++ spin_lock_init(&trigger_data->lock);
++
++ trigger_data->notifier.notifier_call = netdev_trig_notify;
++ trigger_data->notifier.priority = 10;
++
++ INIT_DELAYED_WORK(&trigger_data->work, netdev_trig_work);
++
++ trigger_data->led_cdev = led_cdev;
++ trigger_data->net_dev = NULL;
++ trigger_data->device_name[0] = 0;
++
++ trigger_data->mode = 0;
++ atomic_set(&trigger_data->interval, msecs_to_jiffies(50));
++ 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_link);
++ if (rc)
++ goto err_out_device_name;
++ rc = device_create_file(led_cdev->dev, &dev_attr_rx);
++ if (rc)
++ goto err_out_link;
++ rc = device_create_file(led_cdev->dev, &dev_attr_tx);
++ if (rc)
++ goto err_out_rx;
++ rc = device_create_file(led_cdev->dev, &dev_attr_interval);
++ if (rc)
++ goto err_out_tx;
++ rc = register_netdevice_notifier(&trigger_data->notifier);
++ if (rc)
++ goto err_out_interval;
++ return;
++
++err_out_interval:
++ device_remove_file(led_cdev->dev, &dev_attr_interval);
++err_out_tx:
++ device_remove_file(led_cdev->dev, &dev_attr_tx);
++err_out_rx:
++ device_remove_file(led_cdev->dev, &dev_attr_rx);
++err_out_link:
++ device_remove_file(led_cdev->dev, &dev_attr_link);
++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_link);
++ device_remove_file(led_cdev->dev, &dev_attr_rx);
++ device_remove_file(led_cdev->dev, &dev_attr_tx);
++ device_remove_file(led_cdev->dev, &dev_attr_interval);
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ if (trigger_data->net_dev)
++ dev_put(trigger_data->net_dev);
++
++ 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("Ben Whitten <ben.whitten@gmail.com>");
++MODULE_AUTHOR("Oliver Jowett <oliver@opencloud.com>");
++MODULE_DESCRIPTION("Netdev LED trigger");
++MODULE_LICENSE("GPL v2");
--- /dev/null
+From 06f502f57d0d7728f9fa0f157ec5e4111ddb98f6 Mon Sep 17 00:00:00 2001
+From: Ben Whitten <ben.whitten@gmail.com>
+Date: Sun, 10 Dec 2017 21:17:55 +0000
+Subject: [PATCH] leds: trigger: Introduce a NETDEV trigger
+
+This commit introduces a NETDEV trigger for named device
+activity. Available triggers are link, rx, and tx.
+
+Signed-off-by: Ben Whitten <ben.whitten@gmail.com>
+Acked-by: Pavel Machek <pavel@ucw.cz>
+Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
+---
+ .../ABI/testing/sysfs-class-led-trigger-netdev | 45 ++
+ drivers/leds/trigger/Kconfig | 7 +
+ drivers/leds/trigger/Makefile | 1 +
+ drivers/leds/trigger/ledtrig-netdev.c | 496 +++++++++++++++++++++
+ 4 files changed, 549 insertions(+)
+ create mode 100644 Documentation/ABI/testing/sysfs-class-led-trigger-netdev
+ create mode 100644 drivers/leds/trigger/ledtrig-netdev.c
+
+--- /dev/null
++++ b/Documentation/ABI/testing/sysfs-class-led-trigger-netdev
+@@ -0,0 +1,45 @@
++What: /sys/class/leds/<led>/device_name
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Specifies the network device name to monitor.
++
++What: /sys/class/leds/<led>/interval
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Specifies the duration of the LED blink in milliseconds.
++ Defaults to 50 ms.
++
++What: /sys/class/leds/<led>/link
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Signal the link state of the named network device.
++ If set to 0 (default), the LED's normal state is off.
++ If set to 1, the LED's normal state reflects the link state
++ of the named network device.
++ Setting this value also immediately changes the LED state.
++
++What: /sys/class/leds/<led>/tx
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Signal transmission of data on the named network device.
++ If set to 0 (default), the LED will not blink on transmission.
++ If set to 1, the LED will blink for the milliseconds specified
++ in interval to signal transmission.
++
++What: /sys/class/leds/<led>/rx
++Date: Dec 2017
++KernelVersion: 4.16
++Contact: linux-leds@vger.kernel.org
++Description:
++ Signal reception of data on the named network device.
++ If set to 0 (default), the LED will not blink on reception.
++ If set to 1, the LED will blink for the milliseconds specified
++ in interval to signal reception.
+--- a/drivers/leds/trigger/Kconfig
++++ b/drivers/leds/trigger/Kconfig
+@@ -126,4 +126,11 @@ config LEDS_TRIGGER_PANIC
+ a different trigger.
+ If unsure, say Y.
+
++config LEDS_TRIGGER_NETDEV
++ tristate "LED Netdev Trigger"
++ depends on NET && LEDS_TRIGGERS
++ help
++ This allows LEDs to be controlled by network device activity.
++ If unsure, say Y.
++
+ endif # LEDS_TRIGGERS
+--- a/drivers/leds/trigger/Makefile
++++ b/drivers/leds/trigger/Makefile
+@@ -10,3 +10,4 @@ obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) +=
+ obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT) += ledtrig-transient.o
+ obj-$(CONFIG_LEDS_TRIGGER_CAMERA) += ledtrig-camera.o
+ obj-$(CONFIG_LEDS_TRIGGER_PANIC) += ledtrig-panic.o
++obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o
+--- /dev/null
++++ b/drivers/leds/trigger/ledtrig-netdev.c
+@@ -0,0 +1,496 @@
++// SPDX-License-Identifier: GPL-2.0
++// Copyright 2017 Ben Whitten <ben.whitten@gmail.com>
++// Copyright 2007 Oliver Jowett <oliver@opencloud.com>
++//
++// LED Kernel Netdev Trigger
++//
++// Toggles the LED to reflect the link and traffic state of a named net device
++//
++// Derived from ledtrig-timer.c which is:
++// Copyright 2005-2006 Openedhand Ltd.
++// Author: Richard Purdie <rpurdie@openedhand.com>
++
++#include <linux/atomic.h>
++#include <linux/ctype.h>
++#include <linux/device.h>
++#include <linux/init.h>
++#include <linux/jiffies.h>
++#include <linux/kernel.h>
++#include <linux/leds.h>
++#include <linux/list.h>
++#include <linux/module.h>
++#include <linux/netdevice.h>
++#include <linux/spinlock.h>
++#include <linux/timer.h>
++#include "../leds.h"
++
++/*
++ * Configurable sysfs attributes:
++ *
++ * device_name - network device name to monitor
++ * interval - duration of LED blink, in milliseconds
++ * 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
++ *
++ */
++
++struct led_netdev_data {
++ spinlock_t lock;
++
++ struct delayed_work work;
++ struct notifier_block notifier;
++
++ struct led_classdev *led_cdev;
++ struct net_device *net_dev;
++
++ char device_name[IFNAMSIZ];
++ atomic_t interval;
++ unsigned int last_activity;
++
++ unsigned long mode;
++#define NETDEV_LED_LINK 0
++#define NETDEV_LED_TX 1
++#define NETDEV_LED_RX 2
++#define NETDEV_LED_MODE_LINKUP 3
++};
++
++enum netdev_led_attr {
++ NETDEV_ATTR_LINK,
++ NETDEV_ATTR_TX,
++ NETDEV_ATTR_RX
++};
++
++static void set_baseline_state(struct led_netdev_data *trigger_data)
++{
++ int current_brightness;
++ struct led_classdev *led_cdev = trigger_data->led_cdev;
++
++ current_brightness = led_cdev->brightness;
++ if (current_brightness)
++ led_cdev->blink_brightness = current_brightness;
++ if (!led_cdev->blink_brightness)
++ led_cdev->blink_brightness = led_cdev->max_brightness;
++
++ if (!test_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode))
++ led_set_brightness(led_cdev, LED_OFF);
++ else {
++ if (test_bit(NETDEV_LED_LINK, &trigger_data->mode))
++ led_set_brightness(led_cdev,
++ led_cdev->blink_brightness);
++ else
++ led_set_brightness(led_cdev, LED_OFF);
++
++ /* If we are looking for RX/TX start periodically
++ * checking stats
++ */
++ if (test_bit(NETDEV_LED_TX, &trigger_data->mode) ||
++ test_bit(NETDEV_LED_RX, &trigger_data->mode))
++ schedule_delayed_work(&trigger_data->work, 0);
++ }
++}
++
++static ssize_t 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;
++ ssize_t len;
++
++ spin_lock_bh(&trigger_data->lock);
++ len = sprintf(buf, "%s\n", trigger_data->device_name);
++ spin_unlock_bh(&trigger_data->lock);
++
++ return len;
++}
++
++static ssize_t 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 >= IFNAMSIZ)
++ return -EINVAL;
++
++ 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;
++ }
++
++ strncpy(trigger_data->device_name, buf, size);
++ if (size > 0 && trigger_data->device_name[size - 1] == '\n')
++ trigger_data->device_name[size - 1] = 0;
++
++ if (trigger_data->device_name[0] != 0)
++ trigger_data->net_dev =
++ dev_get_by_name(&init_net, trigger_data->device_name);
++
++ clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ if (trigger_data->net_dev != NULL)
++ if (netif_carrier_ok(trigger_data->net_dev))
++ set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++
++ trigger_data->last_activity = 0;
++
++ set_baseline_state(trigger_data);
++ spin_unlock_bh(&trigger_data->lock);
++
++ return size;
++}
++
++static DEVICE_ATTR_RW(device_name);
++
++static ssize_t netdev_led_attr_show(struct device *dev, char *buf,
++ enum netdev_led_attr attr)
++{
++ struct led_classdev *led_cdev = dev_get_drvdata(dev);
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++ int bit;
++
++ switch (attr) {
++ case NETDEV_ATTR_LINK:
++ bit = NETDEV_LED_LINK;
++ break;
++ case NETDEV_ATTR_TX:
++ bit = NETDEV_LED_TX;
++ break;
++ case NETDEV_ATTR_RX:
++ bit = NETDEV_LED_RX;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ return sprintf(buf, "%u\n", test_bit(bit, &trigger_data->mode));
++}
++
++static ssize_t netdev_led_attr_store(struct device *dev, const char *buf,
++ size_t size, enum netdev_led_attr attr)
++{
++ struct led_classdev *led_cdev = dev_get_drvdata(dev);
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++ unsigned long state;
++ int ret;
++ int bit;
++
++ ret = kstrtoul(buf, 0, &state);
++ if (ret)
++ return ret;
++
++ switch (attr) {
++ case NETDEV_ATTR_LINK:
++ bit = NETDEV_LED_LINK;
++ break;
++ case NETDEV_ATTR_TX:
++ bit = NETDEV_LED_TX;
++ break;
++ case NETDEV_ATTR_RX:
++ bit = NETDEV_LED_RX;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ if (state)
++ set_bit(bit, &trigger_data->mode);
++ else
++ clear_bit(bit, &trigger_data->mode);
++
++ set_baseline_state(trigger_data);
++
++ return size;
++}
++
++static ssize_t link_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_LINK);
++}
++
++static ssize_t link_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_LINK);
++}
++
++static DEVICE_ATTR_RW(link);
++
++static ssize_t tx_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_TX);
++}
++
++static ssize_t tx_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_TX);
++}
++
++static DEVICE_ATTR_RW(tx);
++
++static ssize_t rx_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_RX);
++}
++
++static ssize_t rx_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_RX);
++}
++
++static DEVICE_ATTR_RW(rx);
++
++static ssize_t 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;
++
++ return sprintf(buf, "%u\n",
++ jiffies_to_msecs(atomic_read(&trigger_data->interval)));
++}
++
++static ssize_t 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;
++ unsigned long value;
++ int ret;
++
++ ret = kstrtoul(buf, 0, &value);
++ if (ret)
++ return ret;
++
++ /* impose some basic bounds on the timer interval */
++ if (value >= 5 && value <= 10000) {
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ atomic_set(&trigger_data->interval, msecs_to_jiffies(value));
++ set_baseline_state(trigger_data); /* resets timer */
++ }
++
++ return size;
++}
++
++static DEVICE_ATTR_RW(interval);
++
++static int netdev_trig_notify(struct notifier_block *nb,
++ unsigned long evt, void *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
++ && evt != NETDEV_CHANGENAME)
++ return NOTIFY_DONE;
++
++ if (strcmp(dev->name, trigger_data->device_name))
++ return NOTIFY_DONE;
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ spin_lock_bh(&trigger_data->lock);
++
++ clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ switch (evt) {
++ case NETDEV_REGISTER:
++ if (trigger_data->net_dev)
++ dev_put(trigger_data->net_dev);
++ dev_hold(dev);
++ trigger_data->net_dev = dev;
++ break;
++ case NETDEV_CHANGENAME:
++ case NETDEV_UNREGISTER:
++ if (trigger_data->net_dev) {
++ dev_put(trigger_data->net_dev);
++ trigger_data->net_dev = NULL;
++ }
++ break;
++ case NETDEV_UP:
++ case NETDEV_CHANGE:
++ if (netif_carrier_ok(dev))
++ set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ break;
++ }
++
++ set_baseline_state(trigger_data);
++
++ spin_unlock_bh(&trigger_data->lock);
++
++ return NOTIFY_DONE;
++}
++
++/* here's the real work! */
++static void netdev_trig_work(struct work_struct *work)
++{
++ struct led_netdev_data *trigger_data = container_of(work,
++ struct
++ led_netdev_data,
++ work.work);
++ struct rtnl_link_stats64 *dev_stats;
++ unsigned int new_activity;
++ struct rtnl_link_stats64 temp;
++ unsigned long interval;
++ int invert;
++
++ /* If we dont have a device, insure we are off */
++ if (!trigger_data->net_dev) {
++ led_set_brightness(trigger_data->led_cdev, LED_OFF);
++ return;
++ }
++
++ /* If we are not looking for RX/TX then return */
++ if (!test_bit(NETDEV_LED_TX, &trigger_data->mode) &&
++ !test_bit(NETDEV_LED_RX, &trigger_data->mode))
++ return;
++
++ dev_stats = dev_get_stats(trigger_data->net_dev, &temp);
++ new_activity =
++ (test_bit(NETDEV_LED_TX, &trigger_data->mode) ?
++ dev_stats->tx_packets : 0) +
++ (test_bit(NETDEV_LED_RX, &trigger_data->mode) ?
++ dev_stats->rx_packets : 0);
++
++ if (trigger_data->last_activity != new_activity) {
++ led_stop_software_blink(trigger_data->led_cdev);
++
++ invert = test_bit(NETDEV_LED_LINK, &trigger_data->mode);
++ interval = jiffies_to_msecs(
++ atomic_read(&trigger_data->interval));
++ /* base state is ON (link present) */
++ led_blink_set_oneshot(trigger_data->led_cdev,
++ &interval,
++ &interval,
++ invert);
++ trigger_data->last_activity = new_activity;
++ }
++
++ schedule_delayed_work(&trigger_data->work,
++ (atomic_read(&trigger_data->interval)*2));
++}
++
++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;
++
++ spin_lock_init(&trigger_data->lock);
++
++ trigger_data->notifier.notifier_call = netdev_trig_notify;
++ trigger_data->notifier.priority = 10;
++
++ INIT_DELAYED_WORK(&trigger_data->work, netdev_trig_work);
++
++ trigger_data->led_cdev = led_cdev;
++ trigger_data->net_dev = NULL;
++ trigger_data->device_name[0] = 0;
++
++ trigger_data->mode = 0;
++ atomic_set(&trigger_data->interval, msecs_to_jiffies(50));
++ 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_link);
++ if (rc)
++ goto err_out_device_name;
++ rc = device_create_file(led_cdev->dev, &dev_attr_rx);
++ if (rc)
++ goto err_out_link;
++ rc = device_create_file(led_cdev->dev, &dev_attr_tx);
++ if (rc)
++ goto err_out_rx;
++ rc = device_create_file(led_cdev->dev, &dev_attr_interval);
++ if (rc)
++ goto err_out_tx;
++ rc = register_netdevice_notifier(&trigger_data->notifier);
++ if (rc)
++ goto err_out_interval;
++ return;
++
++err_out_interval:
++ device_remove_file(led_cdev->dev, &dev_attr_interval);
++err_out_tx:
++ device_remove_file(led_cdev->dev, &dev_attr_tx);
++err_out_rx:
++ device_remove_file(led_cdev->dev, &dev_attr_rx);
++err_out_link:
++ device_remove_file(led_cdev->dev, &dev_attr_link);
++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_link);
++ device_remove_file(led_cdev->dev, &dev_attr_rx);
++ device_remove_file(led_cdev->dev, &dev_attr_tx);
++ device_remove_file(led_cdev->dev, &dev_attr_interval);
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ if (trigger_data->net_dev)
++ dev_put(trigger_data->net_dev);
++
++ 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("Ben Whitten <ben.whitten@gmail.com>");
++MODULE_AUTHOR("Oliver Jowett <oliver@opencloud.com>");
++MODULE_DESCRIPTION("Netdev LED trigger");
++MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * 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/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 {
- spinlock_t lock;
-
- struct delayed_work work;
- 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)
- 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 led_classdev *led_cdev = dev_get_drvdata(dev);
- struct led_netdev_data *trigger_data = led_cdev->trigger_data;
-
- spin_lock_bh(&trigger_data->lock);
- sprintf(buf, "%s\n", trigger_data->device_name);
- spin_unlock_bh(&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 >= IFNAMSIZ)
- return -EINVAL;
-
- 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 */
- 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);
- 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 led_classdev *led_cdev = dev_get_drvdata(dev);
- struct led_netdev_data *trigger_data = led_cdev->trigger_data;
-
- spin_lock_bh(&trigger_data->lock);
-
- if (trigger_data->mode == 0) {
- strcpy(buf, "none\n");
- } else {
- 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");
- }
-
- 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 led_classdev *led_cdev = dev_get_drvdata(dev);
- struct led_netdev_data *trigger_data = led_cdev->trigger_data;
- 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[sizeof(copybuf) - 1] = 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;
-
- cancel_delayed_work_sync(&trigger_data->work);
-
- spin_lock_bh(&trigger_data->lock);
- trigger_data->mode = new_mode;
- set_baseline_state(trigger_data);
- 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 led_classdev *led_cdev = dev_get_drvdata(dev);
- struct led_netdev_data *trigger_data = led_cdev->trigger_data;
-
- spin_lock_bh(&trigger_data->lock);
- sprintf(buf, "%u\n", jiffies_to_msecs(trigger_data->interval));
- 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 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 (isspace(*after))
- count++;
-
- /* impose some basic bounds on the timer interval */
- if (count == size && value >= 5 && value <= 10000) {
- 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 */
- spin_unlock_bh(&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 = 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 && evt != NETDEV_CHANGENAME)
- return NOTIFY_DONE;
-
- if (strcmp(dev->name, trigger_data->device_name))
- return NOTIFY_DONE;
-
- 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;
- 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:
- spin_unlock_bh(&trigger_data->lock);
- return NOTIFY_DONE;
-}
-
-/* here's the real work! */
-static void netdev_trig_work(struct work_struct *work)
-{
- struct led_netdev_data *trigger_data = container_of(work, struct led_netdev_data, work.work);
- struct rtnl_link_stats64 *dev_stats;
- unsigned new_activity;
- 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);
- return;
- }
-
- 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);
-
- 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;
- schedule_delayed_work(&trigger_data->work, trigger_data->interval);
-}
-
-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;
-
- spin_lock_init(&trigger_data->lock);
-
- trigger_data->notifier.notifier_call = netdev_trig_notify;
- trigger_data->notifier.priority = 10;
-
- INIT_DELAYED_WORK(&trigger_data->work, netdev_trig_work);
-
- 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);
-
- 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;
- }
-
- spin_unlock_bh(&trigger_data->lock);
-
- 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");
+++ /dev/null
---- a/drivers/leds/trigger/Kconfig
-+++ b/drivers/leds/trigger/Kconfig
-@@ -108,4 +108,11 @@ config LEDS_TRIGGER_CAMERA
- This enables direct flash/torch on/off by the driver, kernel space.
- If unsure, say Y.
-
-+config LEDS_TRIGGER_NETDEV
-+ tristate "LED Netdev Trigger"
-+ depends on NET && LEDS_TRIGGERS
-+ help
-+ This allows LEDs to be controlled by network device activity.
-+ If unsure, say Y.
-+
- endif # LEDS_TRIGGERS
---- a/drivers/leds/Makefile
-+++ b/drivers/leds/Makefile
-@@ -62,3 +62,4 @@ obj-$(CONFIG_LEDS_DAC124S085) += leds-d
-
- # LED Triggers
- obj-$(CONFIG_LEDS_TRIGGERS) += trigger/
-+obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o
+++ /dev/null
-From: Alexey Brodkin <abrodkin@synopsys.com>
-Subject: usb: Remove annoying warning about bogus URB
-
-When ath9k-htc Wi-Fi dongle is used with generic OHCI controller
-infinite stream of warnings appears in debug console like this:
--------------------------->8----------------------
-usb 1-1: new full-speed USB device number 2 using ohci-platform
-usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
-usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size:
-51008
-------------[ cut here ]------------
-WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449
-usb_submit_urb+0x1b4/0x498()
-usb 1-1: BOGUS urb xfer, pipe 1 != type 3
-Modules linked in:
-CPU: 0 PID: 19 Comm: kworker/0:1 Not tainted
-4.4.0-rc4-00017-g00e2d79-dirty #3
-Workqueue: events request_firmware_work_func
-
-Stack Trace:
-arc_unwind_core.constprop.1+0xa4/0x110
----[ end trace 649ef8c342817fc2 ]---
-------------[ cut here ]------------
-WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449
-usb_submit_urb+0x1b4/0x498()
-usb 1-1: BOGUS urb xfer, pipe 1 != type 3
-Modules linked in:
-CPU: 0 PID: 19 Comm: kworker/0:1 Tainted: G W
-4.4.0-rc4-00017-g00e2d79-dirty #3
-Workqueue: events request_firmware_work_func
-
-Stack Trace:
-arc_unwind_core.constprop.1+0xa4/0x110
----[ end trace 649ef8c342817fc3 ]---
-------------[ cut here ]------------
--------------------------->8----------------------
-
-There're some discussions in mailing lists proposing to disable
-that particular check alltogether and magically all seem to work
-fine with muted warning.
-
-Anyways new thread on that regard could be found here:
-http://lists.infradead.org/pipermail/linux-snps-arc/2016-July/001310.html
-
-Let's see what comes out of that new discussion, hopefully patching
-of generic USB stuff won't be required then.
-
-Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
----
- drivers/leds/Makefile | 1 +
- drivers/leds/trigger/Kconfig | 7 +++++++
- 2 files changed, 8 insertions(+)
-
---- a/drivers/leds/Makefile
-+++ b/drivers/leds/Makefile
-@@ -82,3 +82,4 @@ obj-$(CONFIG_LEDS_USER) += uleds.o
-
- # LED Triggers
- obj-$(CONFIG_LEDS_TRIGGERS) += trigger/
-+obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o
---- a/drivers/leds/trigger/Kconfig
-+++ b/drivers/leds/trigger/Kconfig
-@@ -126,4 +126,11 @@ config LEDS_TRIGGER_PANIC
- a different trigger.
- If unsure, say Y.
-
-+config LEDS_TRIGGER_NETDEV
-+ tristate "LED Netdev Trigger"
-+ depends on NET && LEDS_TRIGGERS
-+ help
-+ This allows LEDs to be controlled by network device activity.
-+ If unsure, say Y.
-+
- endif # LEDS_TRIGGERS
+++ /dev/null
-From: Alexey Brodkin <abrodkin@synopsys.com>
-Subject: usb: Remove annoying warning about bogus URB
-
-When ath9k-htc Wi-Fi dongle is used with generic OHCI controller
-infinite stream of warnings appears in debug console like this:
--------------------------->8----------------------
-usb 1-1: new full-speed USB device number 2 using ohci-platform
-usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
-usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size:
-51008
-------------[ cut here ]------------
-WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449
-usb_submit_urb+0x1b4/0x498()
-usb 1-1: BOGUS urb xfer, pipe 1 != type 3
-Modules linked in:
-CPU: 0 PID: 19 Comm: kworker/0:1 Not tainted
-4.4.0-rc4-00017-g00e2d79-dirty #3
-Workqueue: events request_firmware_work_func
-
-Stack Trace:
-arc_unwind_core.constprop.1+0xa4/0x110
----[ end trace 649ef8c342817fc2 ]---
-------------[ cut here ]------------
-WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449
-usb_submit_urb+0x1b4/0x498()
-usb 1-1: BOGUS urb xfer, pipe 1 != type 3
-Modules linked in:
-CPU: 0 PID: 19 Comm: kworker/0:1 Tainted: G W
-4.4.0-rc4-00017-g00e2d79-dirty #3
-Workqueue: events request_firmware_work_func
-
-Stack Trace:
-arc_unwind_core.constprop.1+0xa4/0x110
----[ end trace 649ef8c342817fc3 ]---
-------------[ cut here ]------------
--------------------------->8----------------------
-
-There're some discussions in mailing lists proposing to disable
-that particular check alltogether and magically all seem to work
-fine with muted warning.
-
-Anyways new thread on that regard could be found here:
-http://lists.infradead.org/pipermail/linux-snps-arc/2016-July/001310.html
-
-Let's see what comes out of that new discussion, hopefully patching
-of generic USB stuff won't be required then.
-
-Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
----
- drivers/leds/Makefile | 1 +
- drivers/leds/trigger/Kconfig | 7 +++++++
- 2 files changed, 8 insertions(+)
-
---- a/drivers/leds/Makefile
-+++ b/drivers/leds/Makefile
-@@ -77,3 +77,4 @@ obj-$(CONFIG_LEDS_DAC124S085) += leds-d
-
- # LED Triggers
- obj-$(CONFIG_LEDS_TRIGGERS) += trigger/
-+obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o
---- a/drivers/leds/trigger/Kconfig
-+++ b/drivers/leds/trigger/Kconfig
-@@ -126,4 +126,11 @@ config LEDS_TRIGGER_PANIC
- a different trigger.
- If unsure, say Y.
-
-+config LEDS_TRIGGER_NETDEV
-+ tristate "LED Netdev Trigger"
-+ depends on NET && LEDS_TRIGGERS
-+ help
-+ This allows LEDs to be controlled by network device activity.
-+ If unsure, say Y.
-+
- endif # LEDS_TRIGGERS
projects / openwrt / staging / chunkeey.git / commitdiff