Thanks. I'm reading i82559 code for reference, it is exactly like what you 
said. I will modify my driver and test it next monday.
I think no further config key need to be added. :-)


>From: Jay Foster <jay@systech.com>
>To: 'Andrew Lunn' <andrew@lunn.ch>, wang cui <iucgnaw@msn.com>
>CC: ecos-discuss@ecos.sourceware.org
>Subject: RE: [ECOS] Add config keys to Set/Clear promiscuous mode to 
ethernet device?
>Date: Fri, 2 Feb 2007 09:04:46 -0800 
>
>This may also be done generically from the ethernet driver's 
xxx_eth_start()
>function.  There is a 'flags' argument passed to the start function, but
>unfortunately, eCos makes no use of it.  However, if CYGPKG_NET is 
included,
>the interface flags can be accessed using (sc->sc_arpcom.ac_if.if_flags).
>These flags contain the flags IFF_PROMISC, IFF_MULTICAST, IFF_ALLMULTI,
>IFF_BROADCAST, etc.
>
>Jay
>
>-----Original Message-----
>From: Andrew Lunn [mailto:andrew@lunn.ch]
>Sent: Thursday, February 01, 2007 11:53 PM
>To: wang cui
>Cc: ecos-discuss@ecos.sourceware.org
>Subject: Re: [ECOS] Add config keys to Set/Clear promiscuous mode to
>ethernet device?
>
>
>On Fri, Feb 02, 2007 at 07:35:03AM +0000, wang cui wrote:
> > I wander is there a standard way to change promiscuous mode of a 
ethernet
> > device?
>
>Take a look at the i82559 driver.
>
>      Andrew
>
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>Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
>and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

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