Hi all, This patch adds a new LED trigger, based on network activity. It gathers activity from net/core/dev.c and can be used as a LED trigger by specifying "network-activity". Further version should allow the user to specify the network interface to bind a LED to. This trigger is a "simple" trigger as defined by the LED subsystem.
Signed-off-by: Florian Fainelli <[EMAIL PROTECTED]> --
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 87d2046..fdc5a8a 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -128,5 +128,12 @@ config LEDS_TRIGGER_HEARTBEAT
load average.
If unsure, say Y.
+config LEDS_TRIGGER_NETWORK_ACT
+ tristate "LED Network Activity Trigger"
+ depends on LEDS_TRIGGERS && NET
+ help
+ This allow LEDs to be controlled by network activity at layer-3
networking.
+ If unsure, say Y.
+
endmenu
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index aa2c18e..bc899d3 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -21,3 +21,4 @@ obj-$(CONFIG_LEDS_COBALT) += leds-cobalt.o
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o
obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
+obj-$(CONFIG_LEDS_TRIGGER_NETWORK_ACT) += ledtrig-network-activity.o
diff --git a/drivers/leds/ledtrig-network-activity.c
b/drivers/leds/ledtrig-network-activity.c
new file mode 100644
index 0000000..5c2e051
--- /dev/null
+++ b/drivers/leds/ledtrig-network-activity.c
@@ -0,0 +1,63 @@
+/*
+ * LED Network Activity Trigger
+ *
+ * based on ledtrig-ide-disk by Richard Purdie
+ *
+ * Copyright 2007 Florian Fainelli <[EMAIL PROTECTED]>
+ *
+ * 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/timer.h>
+#include <linux/leds.h>
+
+static void ledtrig_network_timerfunc(unsigned long data);
+
+DEFINE_LED_TRIGGER(ledtrig_network);
+static DEFINE_TIMER(ledtrig_network_timer, ledtrig_network_timerfunc, 0, 0);
+static int network_activity;
+static int network_lastactivity;
+
+void ledtrig_network_activity(void)
+{
+ network_activity++;
+ if (!timer_pending(&ledtrig_network_timer))
+ mod_timer(&ledtrig_network_timer, jiffies +
msecs_to_jiffies(10));
+}
+EXPORT_SYMBOL(ledtrig_network_activity);
+
+static void ledtrig_network_timerfunc(unsigned long data)
+{
+ if (network_lastactivity != network_activity) {
+ network_lastactivity = network_activity;
+ led_trigger_event(ledtrig_network, LED_FULL);
+ mod_timer(&ledtrig_network_timer, jiffies +
msecs_to_jiffies(10));
+ } else {
+ led_trigger_event(ledtrig_network, LED_OFF);
+ }
+}
+
+static int __init ledtrig_network_init(void)
+{
+ led_trigger_register_simple("network-activity", &ledtrig_network);
+ return 0;
+}
+
+static void __exit ledtrig_network_exit(void)
+{
+ led_trigger_unregister_simple(ledtrig_network);
+}
+
+module_init(ledtrig_network_init);
+module_exit(ledtrig_network_exit);
+
+MODULE_AUTHOR("Florian Fainelli <[EMAIL PROTECTED]>");
+MODULE_DESCRIPTION("LED Network Activity trigger");
+MODULE_LICENSE("GPL");
diff --git a/net/core/dev.c b/net/core/dev.c
index ee051bb..a3a4115 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -117,6 +117,7 @@
#include <linux/err.h>
#include <linux/ctype.h>
#include <linux/if_arp.h>
+#include <linux/leds.h>
/*
* The list of packet types we will receive (as opposed to discard)
@@ -1523,6 +1524,7 @@ gso:
* stops preemption for RCU.
*/
rcu_read_lock_bh();
+ ledtrig_network_activity();
/* Updates of qdisc are serialized by queue_lock.
* The struct Qdisc which is pointed to by qdisc is now a
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