netdev - RE: [PATCH] gianfar: Fix invalid TX frames returned on error queue when time stamping.

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Message-ID: <95DC1AA8EC908B48939B72CF375AA5E3013A99124D@alice.at.omicron.at>
Date:	Mon, 9 Jan 2012 08:16:01 +0100
From:	Manfred Rudigier <manfred.rudigier@...cron.at>
To:	David Miller <davem@...emloft.net>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"afleming@...escale.com" <afleming@...escale.com>,
	"avorontsov@...sta.com" <avorontsov@...sta.com>
Subject: RE: [PATCH] gianfar: Fix invalid TX frames returned on error queue
 when time stamping.

From: David Miller [mailto:davem@...emloft.net]
Sent: Thursday, January 05, 2012 19:27

>From: Manfred Rudigier <manfred.rudigier@...cron.at>
>Date: Thu, 5 Jan 2012 15:50:21 +0100
>
>> +
>> +		/* Keep sock if we must return a time stamp on the err queue */
>> +		skb_new->sk = skb->sk;
>
>When I see something like this without any kind of reference counting or
>similar, I am gravely concerned.

The skb_tstamp_tx function called during gfar_clean_tx_ring requires the skb->sk pointer to be set. Otherwise no time stamp can be queued on the socket error queue. 
What would be the correct way for doing this?

Regards,
Manfred
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