2015-07-24 11:48 GMT+02:00 Alexander Aring <alex.aring@xxxxxxxxx>: > On Fri, Jul 24, 2015 at 11:02:30AM +0200, Baptiste Clenet wrote: >> 2015-07-24 10:47 GMT+02:00 Baptiste Clenet <bapclenet@xxxxxxxxx>: >> > 2015-07-24 10:31 GMT+02:00 Alexander Aring <alex.aring@xxxxxxxxx>: >> >> Hi, >> >> >> >> On Fri, Jul 24, 2015 at 09:56:49AM +0200, Baptiste Clenet wrote: >> >>> Hi, >> >>> >> >>> What is SAM value? I got "ieee802154 phy0 wpan0: SAM value 0x3 not >> >>> supported" when I receive a ping from another board. >> >>> >> >> >> >> I think you hit [0]. You got that because we received some 6LoWPAN frame >> >> with context based address compression (the source address). See also [1]. >> > Yes for [0] >> > >> >> >> >> Your options are: >> >> >> >> - That the other board use stateless (means SAC = 0, see [1]) address >> >> compression. >> > How may I check? >> > They use both the same settings, they are based on the same source code. >> SAC bit is set. > > Yes SAC bit means context based address compression and we don't support > it. We should support it, that's what rfc6282 said. But we don't have > support for that now. :-) > > What do you mean with "they are based on the same source code"? It's a > linux<->linux communication? Yes it is linux to linux transmission. Yeah I understand for the support :-) The question is now why my linux use context based address compression if it shouldn't? Where is it (SAC) set when transmitting a message? Then SAC bit should not set, if you try to > communicate with another 802.15.4 6LoWPAN stack then you need to > implement SAC/DAC handling or turn it off on the other side. > >> > >> >> >> >> - Implement context based address compression, there was recently a >> >> RFC patch series which implemented it. This maybe depends also for >> >> handling 6CO field correctly. >> > Could you provide a link? Is that ported to Bluetooth-next branch or Linux-4.1? >> > > > http://www.spinics.net/lists/linux-wpan/msg02613.html > > It's based on bluetooth-next like all others patches which you like to > bring into mainline state. Read [0]. > > - Alex > > [0] http://wpan.cakelab.org/#_developing -- Baptiste -- 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
