Hi, On Wed, Jan 08, 2014 at 01:51:15PM +0530, Varka Bhadram wrote: > hai... > > I enabled the lowpan and wpan interfaces by using: > > $ iz add wpan-phy0 > $ ip link set wpan0 address a0:0:0:0:0:0:0:1 > $ ifconfig wpan0 up > $ iz set wpan0 22 1 15 //22:panid,1:short > address,15:channel number > $ ip link add link wpan0 name lowpan0 type lowpan > $ ip link set lowpan0 address a0:0:0:0:0:0:0:1 > $ ip link set lowpan0 up > > > I am able to see the two interface: > > lowpan0 Link encap:UNSPEC HWaddr > A0-00-00-00-00-00-00-01-00-00-00-00-00-00-00-00 > inet6 addr: fe80::a200:0:0:1/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1281 Metric:1 > RX packets:0 errors:0 dropped:0 overruns:0 frame:0 > TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) > > wpan0 Link encap:UNSPEC HWaddr > A0-00-00-00-00-00-00-01-00-00-00-00-00-00-00-00 > UP BROADCAST RUNNING NOARP MTU:127 Metric:1 > RX packets:390 errors:0 dropped:0 overruns:0 frame:0 > TX packets:2486 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:300 > RX bytes:15789 (15.4 KiB) TX bytes:56803 (55.4 KiB) > > > I am able to send the packet over the wpan interface from user space by using > the IEEE-802.15.4 sockets. When i use sendmsg() the packet is including MAC > header and payload. > > My question how to use the enabled lowpan interface and how to send and > receive > the packets ? > >
on a lowpan interface your talking ipv6. Highly complex kernel mechanismn (oh yea, it's not easy to understand) replace the ipv6 header with a 6LoWPAN IPHC header (rfc 6282) and do fragmentation (if necessary, rfc 4944). You don't need to change your userspace application to talking 6LoWPAN, you can just use every ipv6 application. First of all you have already a link-local address: "fe80::a200:0:0:1" which is on a 6LoWPAN network well, because the ipv6 address is full elided in the 6LoWPAN header. You can write your own ipv6 application and talking to another node. Like ping with another node address "fe80::a200:0:0:2": ping6 fe80::a200:0:0:2%lowpan0 You have a link-local address here so you need specify the interface. Of course you can add a global link address like "2001::2": ip -6 addr add dev lowpan0 2001::2/64 connection with a global link address isn't very well because rfc6282 don't compress these kind of addresses. Normally you have a kind of "rpl-border-router" which have a mapping from global-link to link-local addresses. Then you talking in ipv6 world with global link addresses and in 6LoWPAN world with link-local addresses. It would be very cool to setup such device with linux. :-) - Alex ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Linux-zigbee-devel mailing list Linux-zigbee-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-zigbee-devel
