udhcpc and Infiniband support

Bernhard Fischer rep.dot.nop at gmail.com
Thu May 31 09:17:14 UTC 2007


On Wed, May 30, 2007 at 03:01:49PM -0700, Greg Kurtzer wrote:
>I noticed that the Infiniband driver is dropping the outgoing packets
>from udhcpc:
>
># ifconfig ib0
>ib0       Link encap:UNSPEC  HWaddr 00-00-04-04-FE-80-00-00-00-00-00-00-00-00-0

Reminds me that i have a patch lying around that fixes this 'UNSPEC' for
ib interfaces.
>          UP BROADCAST RUNNING MULTICAST  MTU:2044  Metric:1
>          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:0 errors:0 dropped:18 overruns:0 carrier:0
>          collisions:0 txqueuelen:128
>          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
>
>If I statically define the IP address of ib0, communication works perfect.
>
>I have tested with busybox 1.1.2 and 1.5.1.
>
>Is udhcpc supported over Infiniband?

IIRC Hal did once post a patch that added verbs support to dhcpd (not
our udhcp). Not sure if this was added to upstream.

I never tried the combination of ipoib and the busybox udhcpd/udhcpc,
unfortunately.. Since i'm usually not using IP, i'd recommend you to
have a more detailed look into the issue yourself if you need IP.

>note: I have also tried assigning the client-id at the command line as
>well as defined by the DHCP over IB RFC.

good luck,



More information about the busybox mailing list