Hello.
On 24/07/15 16:45, Baptiste Clenet wrote:
2015-07-24 15:07 GMT+02:00 Alexander Aring <alex.aring@xxxxxxxxx>:
On Fri, Jul 24, 2015 at 02:53:52PM +0200, Baptiste Clenet wrote:
...
Yes if SAC = 1, SAM should be 0 I agree.
Is that somehow possible that I send ihpc of 7b39 (taken at the end of
lowpan_header_compress) and I receive and iphc of 7bf9 (taken at the
begginning of lowpan_header_decompress) every time??
So far I know that is not possible. I think you need to debug it, do you
have maybe some kind of monitor interface to see what on the air?
Here is what tcpdump gives me when I receive a message:
13:15:40.253868 P ethertype Unknown (0x00f6), length 82:
0x0000: 41c8 13ef beff ff56 7863 ed54 89a7 cffb A ......Vxc.T....
0x0010: f93a 0201 ff34 1234 8700 a5ee 0000 0000 .:...4.4........
0x0020: fe80 0000 0000 0000 1234 1234 1234 1234 .........4.4.4.4
0x0030: 0102 cfa7 8954 ede3 7856 0000 0000 0000 .....T..xV......
0x0040: 05c7
There is neither 7b39 or 7bf9.
Can't use tshark on openwrt.
That makes it harder as neccassary for debugging. Either try to use
something like netcat to bring the stream to you host and look at it
with wireshark or save it as pcap file, transfer it to your host and
look at it with wireshark.
Doing it like above is really error prone. Why would you make your life
harder as you should? :)
Btw, why can't I add lowpan0 on top of monitor0?
root@OpenWrt:/# ip link add link monitor0 name lowpan0 type lowpan
RTNETLINK answers: Invalid argument
Hmm, why would you want to do that? A monitor interface should give you
all the information you need during sniffing. For what do you want to
add a lowpan interface on top?
regards
Stefan Schmidt
--
To unsubscribe from this list: send the line "unsubscribe linux-wpan" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
