* Query regarding IPv6 address configuration for BT 6lowpan device/interface
@ 2015-06-18 5:18 paras kumar
2015-06-18 6:55 ` Jukka Rissanen
0 siblings, 1 reply; 2+ messages in thread
From: paras kumar @ 2015-06-18 5:18 UTC (permalink / raw)
To: marcel, johan.hedberg, linux-bluetooth, jukka.rissanen
Hi Marcel,
Could you please provide me answer of below query.
When BT 6Lowpan interface is UP after BLE & IPSP L2CAP connection (Say for
example "bt0").
I don't find interface is configured with inet6/IPv6 address which should be
configured during device initialization.
The snapshot is here:
sh-4.1# ifconfig
bt0: flags=4177<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280
unspec 00-02-FA-FF-FE-72-2D-17-00-00-00-00-00-00-00-00 txqueuelen 0
(UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
My query is how IPv6 address is configured or generated for BT interface? Or
the process which should be followed to get IPv6 address configured ?
Please give me some pointer in kernel code also, where to check?
Thanks & regards,
Paras
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: Query regarding IPv6 address configuration for BT 6lowpan device/interface
2015-06-18 5:18 Query regarding IPv6 address configuration for BT 6lowpan device/interface paras kumar
@ 2015-06-18 6:55 ` Jukka Rissanen
0 siblings, 0 replies; 2+ messages in thread
From: Jukka Rissanen @ 2015-06-18 6:55 UTC (permalink / raw)
To: paras kumar; +Cc: marcel, johan.hedberg, linux-bluetooth
Hi Paras,
On to, 2015-06-18 at 10:48 +0530, paras kumar wrote:
> Hi Marcel,
>
> Could you please provide me answer of below query.
>
> When BT 6Lowpan interface is UP after BLE & IPSP L2CAP connection (Say for
> example "bt0").
> I don't find interface is configured with inet6/IPv6 address which should be
> configured during device initialization.
>
> The snapshot is here:
> sh-4.1# ifconfig
> bt0: flags=4177<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280
> unspec 00-02-FA-FF-FE-72-2D-17-00-00-00-00-00-00-00-00 txqueuelen 0
> (UNSPEC)
> RX packets 0 bytes 0 (0.0 B)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 0 bytes 0 (0.0 B)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
> My query is how IPv6 address is configured or generated for BT interface? Or
> the process which should be followed to get IPv6 address configured ?
>
> Please give me some pointer in kernel code also, where to check?
>
> Thanks & regards,
> Paras
>
>
See net/bluetooth/6lowpan.c:chan_ready_cb(), it will setup the netdev
and take the interface up. This should then cause the interface to have
the IPv6 link local address properly setup by the kernel.
Cheers,
Jukka
^ permalink raw reply [flat|nested] 2+ messages in thread
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