^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) // Copyright 2017 Ben Whitten <ben.whitten@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // Copyright 2007 Oliver Jowett <oliver@opencloud.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // LED Kernel Netdev Trigger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) // Toggles the LED to reflect the link and traffic state of a named net device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) // Derived from ledtrig-timer.c which is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) // Copyright 2005-2006 Openedhand Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) // Author: Richard Purdie <rpurdie@openedhand.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "../leds.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * Configurable sysfs attributes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * device_name - network device name to monitor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * interval - duration of LED blink, in milliseconds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * link - LED's normal state reflects whether the link is up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * (has carrier) or not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * tx - LED blinks on transmitted data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * rx - LED blinks on receive data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct led_netdev_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct delayed_work work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct notifier_block notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct led_classdev *led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct net_device *net_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) char device_name[IFNAMSIZ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) atomic_t interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) unsigned int last_activity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) unsigned long mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define NETDEV_LED_LINK 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define NETDEV_LED_TX 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define NETDEV_LED_RX 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define NETDEV_LED_MODE_LINKUP 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) enum netdev_led_attr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) NETDEV_ATTR_LINK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) NETDEV_ATTR_TX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) NETDEV_ATTR_RX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static void set_baseline_state(struct led_netdev_data *trigger_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int current_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct led_classdev *led_cdev = trigger_data->led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) current_brightness = led_cdev->brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (current_brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) led_cdev->blink_brightness = current_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (!led_cdev->blink_brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) led_cdev->blink_brightness = led_cdev->max_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (!test_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) led_set_brightness(led_cdev, LED_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (test_bit(NETDEV_LED_LINK, &trigger_data->mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) led_set_brightness(led_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) led_cdev->blink_brightness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) led_set_brightness(led_cdev, LED_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* If we are looking for RX/TX start periodically
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * checking stats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (test_bit(NETDEV_LED_TX, &trigger_data->mode) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) test_bit(NETDEV_LED_RX, &trigger_data->mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) schedule_delayed_work(&trigger_data->work, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static ssize_t device_name_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct led_netdev_data *trigger_data = led_trigger_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ssize_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) spin_lock_bh(&trigger_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) len = sprintf(buf, "%s\n", trigger_data->device_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) spin_unlock_bh(&trigger_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static ssize_t device_name_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct device_attribute *attr, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct led_netdev_data *trigger_data = led_trigger_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (size >= IFNAMSIZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) cancel_delayed_work_sync(&trigger_data->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) spin_lock_bh(&trigger_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (trigger_data->net_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) dev_put(trigger_data->net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) trigger_data->net_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) memcpy(trigger_data->device_name, buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) trigger_data->device_name[size] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (size > 0 && trigger_data->device_name[size - 1] == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) trigger_data->device_name[size - 1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (trigger_data->device_name[0] != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) trigger_data->net_dev =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) dev_get_by_name(&init_net, trigger_data->device_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (trigger_data->net_dev != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (netif_carrier_ok(trigger_data->net_dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) trigger_data->last_activity = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) set_baseline_state(trigger_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) spin_unlock_bh(&trigger_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static DEVICE_ATTR_RW(device_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static ssize_t netdev_led_attr_show(struct device *dev, char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) enum netdev_led_attr attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct led_netdev_data *trigger_data = led_trigger_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) int bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) switch (attr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) case NETDEV_ATTR_LINK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) bit = NETDEV_LED_LINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) case NETDEV_ATTR_TX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) bit = NETDEV_LED_TX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) case NETDEV_ATTR_RX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) bit = NETDEV_LED_RX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return sprintf(buf, "%u\n", test_bit(bit, &trigger_data->mode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static ssize_t netdev_led_attr_store(struct device *dev, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) size_t size, enum netdev_led_attr attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct led_netdev_data *trigger_data = led_trigger_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) unsigned long state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) int bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) ret = kstrtoul(buf, 0, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) switch (attr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) case NETDEV_ATTR_LINK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) bit = NETDEV_LED_LINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) case NETDEV_ATTR_TX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) bit = NETDEV_LED_TX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) case NETDEV_ATTR_RX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) bit = NETDEV_LED_RX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) cancel_delayed_work_sync(&trigger_data->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) set_bit(bit, &trigger_data->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) clear_bit(bit, &trigger_data->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) set_baseline_state(trigger_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) static ssize_t link_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return netdev_led_attr_show(dev, buf, NETDEV_ATTR_LINK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static ssize_t link_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct device_attribute *attr, const char *buf, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_LINK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static DEVICE_ATTR_RW(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static ssize_t tx_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return netdev_led_attr_show(dev, buf, NETDEV_ATTR_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) static ssize_t tx_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct device_attribute *attr, const char *buf, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static DEVICE_ATTR_RW(tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static ssize_t rx_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return netdev_led_attr_show(dev, buf, NETDEV_ATTR_RX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static ssize_t rx_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct device_attribute *attr, const char *buf, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_RX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static DEVICE_ATTR_RW(rx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static ssize_t interval_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct led_netdev_data *trigger_data = led_trigger_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return sprintf(buf, "%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) jiffies_to_msecs(atomic_read(&trigger_data->interval)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static ssize_t interval_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct device_attribute *attr, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct led_netdev_data *trigger_data = led_trigger_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) /* impose some basic bounds on the timer interval */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (value >= 5 && value <= 10000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) cancel_delayed_work_sync(&trigger_data->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) atomic_set(&trigger_data->interval, msecs_to_jiffies(value));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) set_baseline_state(trigger_data); /* resets timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static DEVICE_ATTR_RW(interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static struct attribute *netdev_trig_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) &dev_attr_device_name.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) &dev_attr_link.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) &dev_attr_rx.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) &dev_attr_tx.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) &dev_attr_interval.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) ATTRIBUTE_GROUPS(netdev_trig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) static int netdev_trig_notify(struct notifier_block *nb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) unsigned long evt, void *dv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct net_device *dev =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) netdev_notifier_info_to_dev((struct netdev_notifier_info *)dv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) struct led_netdev_data *trigger_data =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) container_of(nb, struct led_netdev_data, notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (evt != NETDEV_UP && evt != NETDEV_DOWN && evt != NETDEV_CHANGE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) && evt != NETDEV_REGISTER && evt != NETDEV_UNREGISTER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) && evt != NETDEV_CHANGENAME)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (!(dev == trigger_data->net_dev ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) (evt == NETDEV_CHANGENAME && !strcmp(dev->name, trigger_data->device_name)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) (evt == NETDEV_REGISTER && !strcmp(dev->name, trigger_data->device_name))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) cancel_delayed_work_sync(&trigger_data->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) spin_lock_bh(&trigger_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) switch (evt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) case NETDEV_CHANGENAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) case NETDEV_REGISTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (trigger_data->net_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) dev_put(trigger_data->net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) dev_hold(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) trigger_data->net_dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) case NETDEV_UNREGISTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) dev_put(trigger_data->net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) trigger_data->net_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) case NETDEV_UP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) case NETDEV_CHANGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (netif_carrier_ok(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) set_baseline_state(trigger_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) spin_unlock_bh(&trigger_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) /* here's the real work! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static void netdev_trig_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) struct led_netdev_data *trigger_data =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) container_of(work, struct led_netdev_data, work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct rtnl_link_stats64 *dev_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) unsigned int new_activity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) struct rtnl_link_stats64 temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) unsigned long interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) int invert;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) /* If we dont have a device, insure we are off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (!trigger_data->net_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) led_set_brightness(trigger_data->led_cdev, LED_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* If we are not looking for RX/TX then return */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (!test_bit(NETDEV_LED_TX, &trigger_data->mode) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) !test_bit(NETDEV_LED_RX, &trigger_data->mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) dev_stats = dev_get_stats(trigger_data->net_dev, &temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) new_activity =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) (test_bit(NETDEV_LED_TX, &trigger_data->mode) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) dev_stats->tx_packets : 0) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) (test_bit(NETDEV_LED_RX, &trigger_data->mode) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) dev_stats->rx_packets : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (trigger_data->last_activity != new_activity) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) led_stop_software_blink(trigger_data->led_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) invert = test_bit(NETDEV_LED_LINK, &trigger_data->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) interval = jiffies_to_msecs(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) atomic_read(&trigger_data->interval));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) /* base state is ON (link present) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) led_blink_set_oneshot(trigger_data->led_cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) &interval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) &interval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) invert);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) trigger_data->last_activity = new_activity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) schedule_delayed_work(&trigger_data->work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) (atomic_read(&trigger_data->interval)*2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) static int netdev_trig_activate(struct led_classdev *led_cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) struct led_netdev_data *trigger_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) trigger_data = kzalloc(sizeof(struct led_netdev_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (!trigger_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) spin_lock_init(&trigger_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) trigger_data->notifier.notifier_call = netdev_trig_notify;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) trigger_data->notifier.priority = 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) INIT_DELAYED_WORK(&trigger_data->work, netdev_trig_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) trigger_data->led_cdev = led_cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) trigger_data->net_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) trigger_data->device_name[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) trigger_data->mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) atomic_set(&trigger_data->interval, msecs_to_jiffies(50));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) trigger_data->last_activity = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) led_set_trigger_data(led_cdev, trigger_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) rc = register_netdevice_notifier(&trigger_data->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) kfree(trigger_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static void netdev_trig_deactivate(struct led_classdev *led_cdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) struct led_netdev_data *trigger_data = led_get_trigger_data(led_cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) unregister_netdevice_notifier(&trigger_data->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) cancel_delayed_work_sync(&trigger_data->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (trigger_data->net_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) dev_put(trigger_data->net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) kfree(trigger_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) static struct led_trigger netdev_led_trigger = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) .name = "netdev",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) .activate = netdev_trig_activate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) .deactivate = netdev_trig_deactivate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) .groups = netdev_trig_groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) static int __init netdev_trig_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return led_trigger_register(&netdev_led_trigger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static void __exit netdev_trig_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) led_trigger_unregister(&netdev_led_trigger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) module_init(netdev_trig_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) module_exit(netdev_trig_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) MODULE_AUTHOR("Ben Whitten <ben.whitten@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) MODULE_AUTHOR("Oliver Jowett <oliver@opencloud.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) MODULE_DESCRIPTION("Netdev LED trigger");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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