1 files changed, 0 insertions, 588 deletions
diff --git a/target/linux/generic/backport-4.19/400-v4.16-leds-trigger-Introduce-a-NETDEV-trigger.patch b/target/linux/generic/backport-4.19/400-v4.16-leds-trigger-Introduce-a-NETDEV-trigger.patch
deleted file mode 100644
index b7d680a11b..0000000000
--- a/target/linux/generic/backport-4.19/400-v4.16-leds-trigger-Introduce-a-NETDEV-trigger.patch
+++ /dev/null
@@ -1,588 +0,0 @@
-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");