* 802.15.4 6LoWPAN fragmentation is broken @ 2015-01-13 11:20 Alexander Aring 2015-01-14 14:16 ` Alexander Aring 0 siblings, 1 reply; 2+ messages in thread From: Alexander Aring @ 2015-01-13 11:20 UTC (permalink / raw) To: linux-wpan Hi, I notice some issue with fragmentation code. There is some magic number like: ping6 2001::1 -s 2145 with a payload of 2144 it works. It seems that all payloads above 2144 are broken. I will try to bisect this issue. I see this issue also in net-next. I suppose it's something with the inet_frag API. ... so don't worry I already working on it. - Alex ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: 802.15.4 6LoWPAN fragmentation is broken 2015-01-13 11:20 802.15.4 6LoWPAN fragmentation is broken Alexander Aring @ 2015-01-14 14:16 ` Alexander Aring 0 siblings, 0 replies; 2+ messages in thread From: Alexander Aring @ 2015-01-14 14:16 UTC (permalink / raw) To: linux-wpan Hi, On Tue, Jan 13, 2015 at 12:20:16PM +0100, Alexander Aring wrote: > Hi, > > I notice some issue with fragmentation code. > > There is some magic number like: > > ping6 2001::1 -s 2145 > > with a payload of 2144 it works. It seems that all payloads above > 2144 are broken. I will try to bisect this issue. I see this issue also > in net-next. I suppose it's something with the inet_frag API. > > > ... so don't worry I already working on it. > Status update to this: I detected that systemd changed the default net scheduler to fq_codel. [0] With fq_codel seems that 6LoWPAN fragmentation is broken. For now: please don't use this scheduler. I will try to find out why we have fragmentation issues with fq_codel. - Alex [0] http://cgit.freedesktop.org/systemd/systemd/commit/?id=e6c253e363dee77ef7e5c5f44c4ca55cded3fd47 ^ permalink raw reply [flat|nested] 2+ messages in thread
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