Re: Request to add MCTP and PCI_DOE to PCAP link type

["Yao, Jiewen via tcpdump-workers" <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: "Yao, Jiewen" <jiewen.yao () intel com>
>
> Date: Mon, 25 Jan 2021 16:11:17 +0000
>
> Thank you.
> I will file a Pull-Request.
>
> The DOE header definition can be found 
> https://github.com/jyao1/openspdm/blob/master/Include/IndustryStandard/PciDoeBinding.h
> It starts from PCI_DOE_DATA_OBJECT_HEADER.
>
> > -----Original Message-----
> > From: Michael Richardson <mcr () sandelman ca>
> > Sent: Monday, January 25, 2021 11:21 PM
> > To: Yao, Jiewen <jiewen.yao () intel com>
> > Cc: tcpdump-workers () lists tcpdump org
> > Subject: Re: [tcpdump-workers] Request to add MCTP and PCI_DOE to PCAP link
> > type
> >
> > Yao, Jiewen via tcpdump-workers <tcpdump-workers () lists tcpdump org> wrote:
> >     > Hello Any response ?
> >
> >     > Thank you Yao Jiewen
> >
> > ...
> > Hi, sorry abotu that.
> >
> >     > Hi I write this email to request to below 2 link types.
> >
> >
> >     >   1.  MCTP
> >
> >     > Management Component Transport Protocol (MCTP) is an industry standard
> >     > defined by Distributed Management Task Force (DMTF) Platform
> > Management
> >     > Communication Interface (PMCI) working group
> >     > (https://www.dmtf.org/standards/pmci)
> >
> >     > DSP0236
> >     >
> > (https://www.dmtf.org/sites/default/files/standards/documents/DSP0236_1.3.
> > 1.pdf)
> >     > is the Management Component Transport Protocol (MCTP) Base
> >     > Specification. It defines the MCTP transport header.  DSP0239
> >     >
> > (https://www.dmtf.org/sites/default/files/standards/documents/DSP0239_1.7.
> > 0.pdf)
> >     > defines the Management Component Transport Protocol (MCTP) IDs and
> >     > Codes. It defines the MCTP message type in a MCTP packet payload.
> >
> >     > Proposal:
> >
> >     > LINKTYPE_ name LINKTYPE_ value Corresponding DLT_ name Description
> >     > LINKTYPE_MCTP XXX DLT_MCTP MCTP packet is defined in DMTF PMCI
> > working
> >     > group Management Component Transport Protocol (MCTP) Base
> >     >
> > Specification(https://www.dmtf.org/sites/default/files/standards/documents/D
> > SP0236_1.3.1.pdf)
> >     > 8.1 MCTP packet fields. It starts with MCTP transport header in Figure
> >     > 4 - Generic message fields.
> >
> > These descriptions look great.
> > Why not follow https://github.com/the-tcpdump-
> > group/libpcap/blob/master/doc/DLT_ALLOCATE_HOWTO.md
> > and send a pull request?
> >
> >     >   1.  PCI_DOE
> >
> >     > PCI Data Object Exchange (DOE) is an industry standard defined by
> >     > PCI-SIG (https://pcisig.com/) Data Object Exchange (DOE)
> >     > ECN<https://members.pcisig.com/wg/PCI-SIG/document/14143>
> >     > (https://members.pcisig.com/wg/PCI-SIG/document/14143).
> >
> > This link is behind some kind of paywall.
> > Maybe there is a public definition we can refer to?
> >
> >     > Proposal:
> >
> >     > LINKTYPE_ name LINKTYPE_ value Corresponding DLT_ name Description
> >     > LINKTYPE_PCI_DOE XXX DLT_PCI_DOE PCI Data Object Exchange (DOE) is
> >     > defined in PCI-SIG Data Object Exchange (DOE) ECN
> >     > (https://members.pcisig.com/wg/PCI-SIG/document/14143) 6.xx.1 Data
> >     > Objects. It starts with DOE Data Object Header 1 in Figure 6-x1: DOE
> >     > Data Object Format.
> >
> >
> >
> >     > The reason I submit this request is because we are implementing a
> >     > "SpdmDump" tool to dump the SPDM message defined in DMTF PMCI
> > Security
> >     > Protocol and Data Model (SPDM) Specification DSP0274
> >     >
> > (https://www.dmtf.org/sites/default/files/standards/documents/DSP0274_1.1.
> > 0.pdf).
> >     > SPDM is similar to network Transport Layer Security (TLS) protocol. It
> >     > is a transport layer protocol.  The MCTP and the PCI_DOE are the
> >     > transport layer binding to send message to hardware device (MCTP
> >     > capable device or PCI_DOE capable device).
> >
> >     > We did a prototype for the SpdmDump tool
> >     > (https://github.com/jyao1/openspdm/blob/master/Doc/SpdmDump.md).
> > We can
> >     > generate a PCAP file and parse it offline.  In our prototype, we use
> >     > below definition: #define LINKTYPE_MCTP 290 // 0x0122 #define
> >     > LINKTYPE_PCI_DOE 291 // 0x0123 If you can assign same number, it will
> >     > be great.  If different number is assigned, we will change our
> >     > implementation accordingly.
> >
> >     > Thank you Yao Jiewen
> >
> >
> >
> >     > _______________________________________________ tcpdump-workers
> > mailing
> >     > list tcpdump-workers () lists tcpdump org
> >     > https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
>
>
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