netdev - RE: [PATCH v5] ixgbe: Add module parameter to disable VLAN filter

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Message-ID: <7F861DC0615E0C47A872E6F3C5FCDDBD05EB4CA5@BPXM14GP.gisp.nec.co.jp>
Date:	Fri, 22 May 2015 00:54:31 +0000
From:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
To:	David Miller <davem@...emloft.net>
CC:	"jeffrey.t.kirsher@...el.com" <jeffrey.t.kirsher@...el.com>,
	"intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
	"sy.jong.choi@...el.com" <sy.jong.choi@...el.com>,
	"ben@...adent.org.uk" <ben@...adent.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH v5] ixgbe: Add module parameter to disable VLAN filter

> Subject: Re: [PATCH v5] ixgbe: Add module parameter to disable VLAN filter
> 
> From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
> Date: Thu, 21 May 2015 13:10:49 +0000
> 
> > diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> > index 263cb40..b45570f 100644
> > --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> > +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> > @@ -158,6 +158,10 @@ module_param(allow_unsupported_sfp, uint, 0);
> >  MODULE_PARM_DESC(allow_unsupported_sfp,
> >  		 "Allow unsupported and untested SFP+ modules on 82599-based adapters");
> >
> > +static unsigned int disable_hw_vlan_filter;
> > +module_param(disable_hw_vlan_filter, uint, 0);
> > +MODULE_PARM_DESC(disable_hw_vlan_filter, "Disable HW VLAN filter");
> 
> Sorry, module parameters like this are not allowed.
> 
> You must use a generic, portable interface, to configure networking
> device settings.

Could you please tell me which interface is good for this?

> 
> Otherwise every other driver that wants to do something similar will
> have yet another module option with a different name, and every user
> will suffer because they will need to learn a different mechanism
> to perform this configuration for every driver.

Right, I agree.
But I thought that this requirement seems really special and closed in
ixgbe driver, that the reason I tried it with module parameter.

thanks,
Hiroshi

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