Hi Marek, Simon
I'm writing a protocol dissector for tcpdump which understands batman-adv packets. To do this i need to use packet.h, at least that is the easiest way to do it. tcpdump uses the BSD license, where as packet.h is GPL2. So it is unlikely the tcpdump maintainers would accept packet.h as is.
As the two copyright owners of this file, is it O.K. with you to if i change the license on this one file in my tcpdump patch to use BSD?
Thanks Andrew
Hello Andrew,
this is fine with me, let's hear what marek thinks. BTW, there are excellent batman dissectors for wireshark, have you tried them already?
best regards, Simon
On Mon, Aug 17, 2009 at 08:36:44PM +0200, Andrew Lunn wrote:
Hi Marek, Simon
I'm writing a protocol dissector for tcpdump which understands batman-adv packets. To do this i need to use packet.h, at least that is the easiest way to do it. tcpdump uses the BSD license, where as packet.h is GPL2. So it is unlikely the tcpdump maintainers would accept packet.h as is.
As the two copyright owners of this file, is it O.K. with you to if i change the license on this one file in my tcpdump patch to use BSD?
Thanks Andrew
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Hello Andrew,
this is fine with me, let's hear what marek thinks. BTW, there are excellent batman dissectors for wireshark, have you tried them already?
The B.A.T.M.A.N. dissector is in Wireshark 1.2, but the B.A.T.M.A.N. advanced dissector is still waiting in https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2631 and/or http://gitorious.org/wireshark-batman-plugins/wireshark-batman-adv
And I think that it is still a good idea to have tcpdump dissectors as you maybe want to have live output over your seriell interface on you embedded device without much hassle.
Best regards, Sven
And I think that it is still a good idea to have tcpdump dissectors as you maybe want to have live output over your seriell interface on you embedded device without much hassle.
Yes, that is my aim. Wireshark has too much overhead for embedded system use.
Writing the dissector was simple. Writing new filters looks a lot harder. I don't yet understand the Flex/Bision stuff in libpcap. Does anybody have any experience with it?
Andrew
yeah, also fine with me. Although I don't understand why we have to change the licence of our file for that (I never wrote dissectors for tcpdump).
I'm directly using packet.h. As is, no changes. I need the packet structure definitions. The file has a GPL header, so its licensed under GPL. If you mix that file with the rest of tcpdump, which is BSD, tcpdump becomes GPL. I'm guessing this is not acceptable. So for the copy of packet.h i include in tcpdump, i want to put a BSD license on the file. The version in the batman repository can stay GPL.
Thanks for O.K.ing this. I will post a patch to tcpdump here for testing, before sending it to the tcpdump maintainers.
Andrew
b.a.t.m.a.n@lists.open-mesh.org
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Andrew Lunn -
Marek Lindner -
Simon Wunderlich -
Sven Eckelmann