tcpdump mailing list archives
Re: Request for new DLT and LINKTYPE value
From: Fulko Hew <fulko.hew () gmail com>
Date: Tue, 13 Apr 2010 13:10:38 -0400
On Tue, Apr 13, 2010 at 11:53 AM, Edgar, Thomas <thomas.edgar () pnl gov>wrote:
On Apr 12, 2010, at 4:26 PM, Guy Harris wrote:I am posting to request a value for DLT_SERIAL and LINKTYPE_SERIAL foruse with libpcap. I am >working on a project to update libpcap and Wireshark to capture and parse RS232 and RS485 traffic >(written such that it could handle a wide range of serial protocols but targeted toward a specific >application).What form of packet framing are you doing? Neither libpcap nor tcpdumpnor Wireshark nor... can >handle a stream of bytes not ultimately broken up into packets of some sort.The framing could be as simple as just dropping packet boundaries in atarbitrary points.
I don't know if you can re-use what I've done, or even piggy back on it, but... Been there, done that (my way) I had gotten a DLT for adding 'serial' comms to Wireshark / libpcap (under my companies designator). You can read about it in the file 'pcap-sita.html' in the libpcap distribution. It was designed to allow packet-oriented serial protocols to be captured, and also to communicate physical layer aspects. Fulko - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
Current thread:
- Request for new DLT and LINKTYPE value Edgar, Thomas (Apr 12)
- Re: Request for new DLT and LINKTYPE value Guy Harris (Apr 12)
- Re: Request for new DLT and LINKTYPE value Edgar, Thomas (Apr 13)
- Re: Request for new DLT and LINKTYPE value Fulko Hew (Apr 13)
- Re: Request for new DLT and LINKTYPE value Guy Harris (Apr 13)
- Re: Request for new DLT and LINKTYPE value Edgar, Thomas (Apr 13)
- Re: Request for new DLT and LINKTYPE value Guy Harris (Apr 13)
- Re: Request for new DLT and LINKTYPE value Edgar, Thomas (Apr 15)
- Re: Request for new DLT and LINKTYPE value Guy Harris (Apr 15)
- Re: Request for new DLT and LINKTYPE value Edgar, Thomas (Apr 16)
- Re: Request for new DLT and LINKTYPE value Edgar, Thomas (Apr 13)
- Re: Request for new DLT and LINKTYPE value Guy Harris (Apr 12)
- Re: Request for new DLT and LINKTYPE value Michael Richardson (Apr 15)