linux-kernel - Re: [PATCH 2/8] bnx2x: adopt bnx2x_validate_addr() to .ndo_validate

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Date:	Wed, 29 Feb 2012 18:08:29 +0100
From:	Danny Kukawka <danny.kukawka@...ect.de>
To:	"Dmitry Kravkov" <dmitry@...adcom.com>
Cc:	"Eilon Greenstein" <eilong@...adcom.com>, netdev@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/8] bnx2x: adopt bnx2x_validate_addr() to .ndo_validate_addr changes

On Mittwoch, 29. Februar 2012, Dmitry Kravkov wrote:
> On Wed, 2012-02-29 at 16:42 +0100, Danny Kukawka wrote:
> > Adopted bnx2x_validate_addr() to changes in .ndo_validate_addr,
> > handle second parameter to be validated.
> >
> > Signed-off-by: Danny Kukawka <danny.kukawka@...ect.de>
> > ---
> >  drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c |   13 ++++++++++---
> >  1 files changed, 10 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> > b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index b4afef6..d25ef1e
> > 100644
> > --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> > +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> > @@ -10532,12 +10532,19 @@ static void poll_bnx2x(struct net_device *dev)
> >  }
> >  #endif
> >
> > -static int bnx2x_validate_addr(struct net_device *dev)
> > +static int bnx2x_validate_addr(struct net_device *dev, void *addr)
> >  {
> >  	struct bnx2x *bp = netdev_priv(dev);
> > +	struct sockaddr *saddr;
> >
> > -	if (!bnx2x_is_valid_ether_addr(bp, dev->dev_addr))
> > -		return -EADDRNOTAVAIL;
> > +	if (addr) {
> > +		saddr = addr;
> > +		if (!bnx2x_is_valid_ether_addr(bp, saddr->sa_data))
> > +			return -EADDRNOTAVAIL;
> > +	} else {
> > +		if (!bnx2x_is_valid_ether_addr(bp, dev->dev_addr))
> > +			return -EADDRNOTAVAIL;
> > +	}
> >  	return 0;
> >  }
>
> Isn't it preferred to calculate the correct address for test and then
> call bnx2x_is_valid_ether_addr() at the end?

Do you mean something like this: 

int eth_validate_addr(struct net_device *dev, void *addr)
{
 u8 *vaddr;

 if (addr)
    vaddr = ((struct sockaddr *) addr)->sa_data;
 else
    vaddr = dev->dev_addr;

 if (!is_valid_ether_addr(vaddr))
    return -EADDRNOTAVAIL;

 return 0;
}


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