netdev - RE: gianfar vlan

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Date:	Fri, 15 Jul 2011 09:59:03 +0200
From:	"Sebastian Pöhn" <sebastian.belden@...glemail.com>
To:	sandeep.kumar@...escale.com, sandeep.kumar@...escale.com,
	netdev@...r.kernel.org, jpirko@...hat.com
Cc:	Sebastian Pöhn <sebastian.poehn@...den.com>
Subject: RE: gianfar vlan

Hi Jirka!

The rx queue filer table also needs the RCTRL_PRSDEP_INIT to be set. So I would suggest to add FILREN to RCTRL_REQ_PARSER.

Further I guess the parser should only be enabled if it is necessary (because of VLAN, IP, TCP or FILREN acceleration modes).

What about putting the

if (tempval & RCTRL_REQ_PARSER)
	tempval |= RCTRL_PRSDEP_INIT;
else
	tempval &= ~RCTRL_PRSDEP_INIT;

in a dedicated routine and call it every time one of the four features is altered?

Greetings
Sebastian

> Hi Sandeep.
> 
> I'm trying to remove gfar_vlan_rx_register() and move the vlan accel
> enabling/disabling to gfar_set_features() -> startup_gfar() ->
> gfar_init_mac(). I'm not sure how to handle following lines in
> gfar_vlan_rx_register():
> 
> /* If parse is no longer required, then disable parser */
> if (tempval & RCTRL_REQ_PARSER)
> tempval |= RCTRL_PRSDEP_INIT;
> else
> tempval &= ~RCTRL_PRSDEP_INIT;
> 
> Should this be done only on disabling vlan accel (both rx an tx)?
> Or can I just do that always in startup_gfar() ?
> 
> Thanks.
> 
> Jirka

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