netdev - Re: [PATCH net-next v4 2/2] net: Special handling for IP & MPLS.

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

Message-ID: <CA+FuTSdvC+7MuEPnB2kUxx+L5170SxEP1Gn6AfN5v6e5_RqcvQ@mail.gmail.com>
Date:   Wed, 22 Jan 2020 13:30:53 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Martin Varghese <martinvarghesenokia@...il.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>, corbet@....net,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        scott.drennan@...ia.com, Jiri Benc <jbenc@...hat.com>,
        martin.varghese@...ia.com
Subject: Re: [PATCH net-next v4 2/2] net: Special handling for IP & MPLS.

On Tue, Jan 21, 2020 at 12:51 PM Martin Varghese
<martinvarghesenokia@...il.com> wrote:
>
> From: Martin Varghese <martin.varghese@...ia.com>
>
> Special handling is needed in bareudp module for IP & MPLS as they
> support more than one ethertypes.
>
> MPLS has 2 ethertypes. 0x8847 for MPLS unicast and 0x8848 for MPLS multicast.
> While decapsulating MPLS packet from UDP packet the tunnel destination IP
> address is checked to determine the ethertype. The ethertype of the packet
> will be set to 0x8848 if the  tunnel destination IP address is a multicast
> IP address. The ethertype of the packet will be set to 0x8847 if the
> tunnel destination IP address is a unicast IP address.
>
> IP has 2 ethertypes.0x0800 for IPV4 and 0x86dd for IPv6. The version
> field of the IP header tunnelled will be checked to determine the ethertype.
>
> This special handling to tunnel additional ethertypes will be disabled
> by default and can be enabled using a flag called ext mode. This flag can
> be used only with ethertypes 0x8847 and 0x0800.
>
> Signed-off-by: Martin Varghese <martin.varghese@...ia.com>

Acked-by: Willem de Bruijn <willemb@...gle.com>