linux-kernel - Re: [PATCH net V3 1/2] tun: unbreak truncated packet signalling

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Message-Id: <20131211.152622.282773097382499363.davem@davemloft.net>
Date:	Wed, 11 Dec 2013 15:26:22 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	jasowang@...hat.com
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	wuzhy@...ux.vnet.ibm.com, mst@...hat.com, vyasevich@...il.com
Subject: Re: [PATCH net V3 1/2] tun: unbreak truncated packet signalling

From: Jason Wang <jasowang@...hat.com>
Date: Wed, 11 Dec 2013 13:08:33 +0800

> Commit 6680ec68eff47d36f67b4351bc9836fd6cba9532
> (tuntap: hardware vlan tx support) breaks the truncated packet signal by nev
> return a length greater than iov length in tun_put_user(). This patch fixes
> by always return the length of packet plus possible vlan header. Caller can
> detect the truncated packet by comparing the return value and the size of io
> length.
> 
> Cc: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
> Cc: Michael S. Tsirkin <mst@...hat.com>
> Signed-off-by: Vlad Yasevich <vyasevich@...il.com>
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Applied and queued up for -stable.
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