netdev - Re: [PATCH 10/11] mv643xx_eth: enable transmit time stamping.

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Date:	Sun, 19 Jun 2011 20:33:18 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Richard Cochran <richardcochran@...il.com>
Cc:	netdev@...r.kernel.org, David Miller <davem@...emloft.net>,
	Lennert Buytenhek <buytenh@...tstofly.org>
Subject: Re: [PATCH 10/11] mv643xx_eth: enable transmit time stamping.

Le dimanche 19 juin 2011 à 20:17 +0200, Richard Cochran a écrit :
> On Sun, Jun 19, 2011 at 01:20:06PM +0200, Richard Cochran wrote:
> > This patch enables software (and phy device) transmit time stamping.
> > Compile tested only.
> > 
> > Cc: Lennert Buytenhek <buytenh@...tstofly.org>
> > Signed-off-by: Richard Cochran <richard.cochran@...cron.at>
> > ---
> >  drivers/net/mv643xx_eth.c |    2 ++
> >  1 files changed, 2 insertions(+), 0 deletions(-)
> > 
> > diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
> > index a5d9b1c..c7a8f10 100644
> > --- a/drivers/net/mv643xx_eth.c
> > +++ b/drivers/net/mv643xx_eth.c
> > @@ -884,6 +884,8 @@ static netdev_tx_t mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
> >  	if (!txq_submit_skb(txq, skb)) {
> >  		int entries_left;
> >  
> > +		skb_tx_timestamp(skb);
> > +
> >  		txq->tx_bytes += skb->len;
> 
> And the line above is unsafe, as well.
> 

Yes, for sure, please submit patches to fix this (before adding time
stamping patches), as this should go to stable.



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