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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <f82e5e6d-d32d-d5dc-5484-f3f2ab76450b@cumulusnetworks.com>
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.