netdev - Re: [PATCH net-next] ipv6: Initial skb->dev and skb->protocol in ip6

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Message-ID: <9999fb16-74c0-1f7a-7657-5905fcc0db63@gmail.com>
Date:   Fri, 9 Jun 2017 12:45:01 -0700
From:   Chenbo Feng <chenbofeng.kernel@...il.com>
To:     Bjørn Mork <bjorn@...k.no>
Cc:     David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        lorenzo@...gle.com, edumazet@...gle.com, fengc@...gle.com
Subject: Re: [PATCH net-next] ipv6: Initial skb->dev and skb->protocol in
 ip6_output



On 06/09/2017 12:24 PM, Bjørn Mork wrote:
> Chenbo Feng <chenbofeng.kernel@...il.com> writes:
>
>> This patch is still under working since it may have problem with
>> ip_fragment() call, did you applied it already? Should I send a revert
>> patch to you then?
> It does? I initially thought so too, but looking closer I believe the
> ip6_copy_metadata() calls in ip6_fragment() takes care of it.
>
>
>
> Bjørn
>
At least in the fail_toobig code path of ip_fragment() call, skb->dev 
get assigned again. It seems to be redundant with this patch or it will 
rewrite the skb->dev field. I will revert this one and upload again 
after I have a proper handle for that.