Re: Request new DLT value for Infiniband link

[Guy Harris <guy () alum mit edu>]

On Nov 11, 2012, at 4:53 AM, Oren Kladnitsky <orenk () mellanox com> wrote:

> I'd like to request a new DLT/LINKTYPE value for Infiniband traffic (DLT_INFINIBAND).
> Infiniband spec is available at:
> http://members.infinibandta.org/kwspub/spec/V1r1_2_1.Release_12062007.zip
> (registration required).

> See "Chapter 5.: Data packet format" for the packet layout. LRH (Local Route Header) is the first header of all data 
> packets.
>
> Wireshark already has support for Infiniband dissection (epan/dissectors/packet-infiniband.c) under encap of DLT_ERF.
>
> I'd like Infiniband to have a dedicated DLT for future pcapng support which does not require the ERF encapsulation.

OK, I've added LINKTYPE_INFINIBAND and DLT_INFINIBAND, with a value of 247.  The list of link-layer header types at

        http://www.tcpdump.org/linktypes.html

should update in 24 hours or so; the description is "Raw InfiniBand frames, starting with the Local Routing Header, as 
specified in Chapter 5 "Data packet format" of InfiniBand™ Architectural Specification Release 1.2.1 Volume 1 - General 
Specifications.", with "InfiniBand™ Architectural Specification Release 1.2.1 Volume 1 - General Specifications" 
linking to the URL you gave.
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