netdev - Re: [PATCH v2] net: Require exact match for TCP socket lookups if dif is l3mdev

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Date:   Fri, 14 Oct 2016 09:28:15 -0600
From:   David Ahern <dsa@...ulusnetworks.com>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH v2] net: Require exact match for TCP socket lookups if dif
 is l3mdev

On 10/14/16 6:21 AM, David Ahern wrote:
>> So you might need to let the caller pass IP6CB(skb)->flags (or
>> TCP_SKB_CB(skb)->header.h6.flags ) instead of skb since
>> inet6_exact_dif_match() does not know where to fetch the flags.
>>
>> Same issue for IPv4.
> 
> I'll update the match functions to pull from TCP_SKB_CB instead of IP6CB and make a note of the above.

IPv6 does the move after the socket lookup where IPv4 does it before.