Re: [Wireshark-dev] How to add a wtap encapsulation?

On Oct 12, 2010, at 2:04 PM, Yo Mismo wrote:

> I want to add a wtap encapsulation for a new link layer protocol.

A Wiretap encapsulation is useful only if you have a capture file format that uses it.

What type of capture file is this?

If it's pcap or pcap-ng format, see the replies from Christopher Maynard and Jeff Morris - you'd need a DLT_ value (well, technically, a LINKTYPE_ value, but for all new values, they're the same) for use in the pcap file header or the pcap-ng Interface Description Block, and you could either use one of the "user-defined" values, in which case you'd also use the corresponding "user-defined" WTAP_ENCAP_ value, or you could get a new DLT_ value from tcpdump-workers@tcpdump.org, and modify wiretap/pcap-common.c to map that DLT_ value to your new WTAP_ENCAP_ value.

If it's some other format, you'd have to modify the Wiretap file for that file format to map a capture using that link-layer protocol to your new WTAP_ENCAP_ value.
___________________________________________________________________________
Sent via: Wireshark-dev mailing list <wireshark-dev@wireshark.org>
Archives: http://www.wireshark.org/lists/wireshark-dev
Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev
             mailto:wireshark-dev-request@wireshark.org?subject=unsubscribe

• This message: [ Message body ]
• Next message: Joerg Mayer: "[Wireshark-dev] Warnings with MAIN_MENU_USE_UIMANAGER"
• Previous message: Beth: "Re: [Wireshark-dev] 6lowpan dissector in 1.4"
• In reply to: Yo Mismo: "[Wireshark-dev] How to add a wtap encapsulation?"
• Next in thread: Yo Mismo: "Re: [Wireshark-dev] How to add a wtap encapsulation?"

• Contemporary messages sorted: [ By Date ] [ By Thread ] [ By Subject ] [ By Author ]