Alexander - I've attached a copy of 6lowpan.c that includes fixes for the fragmentation offset computation and for decompression of link-local addresses in a fragmented datagram. You should look at the code carefully because I'm not absolutely sure this code is exactly what I had running at one point.
I'm sorry for the confusion; as I say, I had to put the project aside and I haven't looked at it in several months. Hope this is helpful, and that sending the 12KB compressed file to the list isn't too intrusive... - Ralph On Jul 12, 2013, at 7:11 AM 7/12/13, Alexander Aring <alex.ar...@gmail.com> wrote: > Hi Ralph, > > On Fri, Jul 12, 2013 at 11:00:56AM +0000, Ralph Droms (rdroms) wrote: >> >> >> On Jul 12, 2013, at 6:37 AM, "Alexander Aring" <alex.ar...@gmail.com> wrote: >> >>> Hi Ralph and Werner, >>> >>> On Thu, Jul 11, 2013 at 02:55:49PM +0000, Ralph Droms (rdroms) wrote: >>>> >>>> On Jul 8, 2013, at 1:24 PM 7/8/13, Werner Almesberger >>>> <wer...@almesberger.net> wrote: >>>> >>>>> Ralph Droms wrote: >>>>>> These patches fix link-local address uncompression, for both source >>>>>> and destination addresses. >>>>> >>>>> I ran into this too (when trying to ping Contiki). Tony then pointed >>>>> out on IRC that you had once done something about this issue but the >>>>> patches never made it upstream. >>>>> >>>>> What's the status of your patches ? Do you plan to submit them to >>>>> net-next ? >>>> >>>> For a variety of reasons, I've had to abandon my work on the Linux >>>> IPv6-over-IEEE802.15.4 code. >>>> >>>> I came close to formatting the patches for submission, but didn't finish >>>> up the details. >>>> >>>> I'm willing to make my code available in its current form, if that would >>>> be useful. I haven't been paying close attention but I think there may be >>>> others working on the same issue. >>> >>> There is currenly also a know problem with the payload calculation in >>> fragmented/defragmented part. Do you have patches for this, too? >> >> I discovered a problem with the fragment offset calculation. According to >> RFC 4944, the offset should represent the location of the fragment in the >> original data gram, while the code computed the location after header >> compression. >> >>> >>> It's nice to know who work on which problem, so I don't need to need to >>> work on this if someone have a fix for this already. >> >> I wrote code to fix this problem, but abandoned the effort before submitting >> an official patch. I can make the code available if someone wants to pick >> up the work. >> > > Yeah, that would be great :-). Thanks. > > I have some patches for small issues, like commenting. I will send it on > this list, too. If all seems to be ok, then we can send it to netdev ml. > > Regards > Alex
6lowpan.c.gz
Description: 6lowpan.c.gz
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