linux-kernel - Re: [PATCH] add netdev led trigger

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Message-ID: <20101117105925.GC1574@ucw.cz>
Date:	Wed, 17 Nov 2010 12:05:16 +0100
From:	Pavel Machek <pavel@....cz>
To:	Eric Cooper <ecc@....edu>
Cc:	linux-kernel@...r.kernel.org, Richard Purdie <rpurdie@...ys.net>,
	Greg KH <greg@...ah.com>
Subject: Re: [PATCH] add netdev led trigger

Hi!

> Add a netdev LED trigger for all Blinkenlights lovers...
> Originally taken from https://dev.openwrt.org/ticket/2776
> Slightly updated for 2.6.24 by Mickey Lauer <mickey@...nmoko.org>
> and for 2.6.36 by Eric Cooper <ecc@....edu>

Nice!

> +/*
> + * Configurable sysfs attributes:
> + *
> + * device_name - network device name to monitor
> + *
> + * interval - duration of LED blink, in milliseconds

This needs to go to Doc/ somewhere.

> + * 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

One value per file?

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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