X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fstaging%2Fdedeckeh.git;a=blobdiff_plain;f=target%2Flinux%2Fgeneric%2Fbackport-4.9%2F400-v4.16-leds-trigger-Introduce-a-NETDEV-trigger.patch;fp=target%2Flinux%2Fgeneric%2Fbackport-4.9%2F400-v4.16-leds-trigger-Introduce-a-NETDEV-trigger.patch;h=0000000000000000000000000000000000000000;hp=bd58df63c0e95e2320d66ae8b9bfaba686311484;hb=57a9633a2c6c3be56c794576157f057a70ac52df;hpb=28fd4ac512ec1c08a79ac7a434b2def3cc82f1d5 diff --git a/target/linux/generic/backport-4.9/400-v4.16-leds-trigger-Introduce-a-NETDEV-trigger.patch b/target/linux/generic/backport-4.9/400-v4.16-leds-trigger-Introduce-a-NETDEV-trigger.patch deleted file mode 100644 index bd58df63c0..0000000000 --- a/target/linux/generic/backport-4.9/400-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 -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 -Acked-by: Pavel Machek -Signed-off-by: Jacek Anaszewski ---- - .../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//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//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//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//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//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 -+// Copyright 2007 Oliver Jowett -+// -+// 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 -+ -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#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 "); -+MODULE_AUTHOR("Oliver Jowett "); -+MODULE_DESCRIPTION("Netdev LED trigger"); -+MODULE_LICENSE("GPL v2");