linux-kernel - Re: [PATCH net-next] tun: fix issues of iovec iterators using in tun_put

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Message-Id: <20141113.143551.1032729786667755501.davem@davemloft.net>
Date:	Thu, 13 Nov 2014 14:35:51 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	jasowang@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, mst@...hat.com
Subject: Re: [PATCH net-next] tun: fix issues of iovec iterators using in
 tun_put_user()

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Thu, 13 Nov 2014 16:58:38 +0800

> On Thu, Nov 13, 2014 at 04:54:14PM +0800, Jason Wang wrote:
>> This patch fixes two issues after using iovec iterators:
>> - vlan_offset should be initialized to zero, otherwise unexpected offset
>>   will be used in skb_copy_datagram_iter()
>> - advance iovec iterator when vnet_hdr_sz is greater than sizeof(gso), this
>>   is the case when mergeable rx buffer were enabled for a virt guest.
>> 
>> Fixes e0b46d0ee9c240c7430a47e9b0365674d4a04522 ("tun: Use iovec iterators")
>> Cc: Herbert Xu <herbert@...dor.apana.org.au>
>> Signed-off-by: Jason Wang <jasowang@...hat.com>
> 
> Good catch.
> 
> Acked-by: Herbert Xu <herbert@...dor.apana.org.au>

Applied, thanks everyone.
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