Re: Request for a DLT code for IPMB packet

["Toeung, Chanthy" <chanthy.toeung () ca kontron com>]

> So presumably the first byte of the packet data will be the slave
address, followed by the netFn and LUN, followed by the checksum, etc.?
yes. It is correct.

> Capture type, or DLT_ type?
I need DLT_ type. I already develop the code for the package by using the DLT_USR14 for this packet.
Actually, i know that pcap*.c doesn't support I2C. So i have also build a "Capture engine" to catch raw data from I2C, 
then save it in a file under  hexdump format.
After that i will use text2pcap to transfrom this file into pcap file format, then it can be open with Wireshark.

So now i want to put the dissector/plugins IPMB that i have develop into open source. That is the reason why i need a 
DLT_ value for this protocol.

> See, for example, the Linux Bluetooth and USB capture devices for
> examples.  Unfortunately, there's no "how to add a new type of capture
> device" documentation - and the interface for that will probably change
> at some point.
where can i find the example of USB capture devices ?


-----Original Message-----
From: tcpdump-workers-owner () lists tcpdump org
[mailto:tcpdump-workers-owner () lists tcpdump org]On Behalf Of Guy Harris
Sent: Monday, August 13, 2007 2:33 PM
To: tcpdump-workers () lists tcpdump org
Subject: Re: [tcpdump-workers] Request for a DLT code for IPMB packet


Toeung, Chanthy wrote:

> I'm doing a project on creating a plugins of packet IPMB ( with I2C
> interface ) in Wireshark.
>
> Now i need a specific DLT code for this packet so that i can put my
> code in Open Source of Wirshark. Can you please assign me one number ?

So presumably the first byte of the packet data will be the slave
address, followed by the netFn and LUN, followed by the checksum, etc.?

> Moreover, Can you tell me how to add a new Capture type to libpcap ?

Capture type, or DLT_ type?

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