netdev - Re: [PATCH][net-next] gianfar: Fix reported sent bytes to BQL for Tx timestamping

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Date:	Mon, 29 Apr 2013 08:33:48 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Claudiu Manoil <claudiu.manoil@...escale.com>
Cc:	netdev@...r.kernel.org,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH][net-next] gianfar: Fix reported sent bytes to BQL for
 Tx timestamping

On Mon, 2013-04-29 at 08:23 -0700, Eric Dumazet wrote:

> > Does BQL really need to measure the bytes-on-wire or the bytes consumed
> > for buffering?
> 
> Yes.

I meant, bytes on wire.

If it was bytes consumed for buffering, we would use skb->truesize here.

Anyway, I am not sure your fix is enough if VLAN is used for example.



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