[Sugar-devel] Wanting to know a bit of (NetworkManager) workflow upon resume-from-suspend

[Ajay Garg]

Paul, here are the test results ::


== USE-CASE 1 ==

a)
Created file '/etc/modprobe.d/libertas.conf'.


b)
Ensured that '/etc/modprobe.d/libertas.conf' contained only the
following line ::

              options libertas libertas_disablemesh=1


c)
Ensured that there is no "echo 0 > "/sys/class/net/eth0/lbs_mesh"
script, anywhere on the XO-1.
This also meant, that there was no '/etc/powerd/postresume.d/disable_mesh.sh'.


d)
Rebooted.


e)
Wifi icons were visible in Neighborhood-View, but no mesh-icons were visible.


f)
Upon resume-from-suspend, wifi icons were visible in
Neighborhood-View, but no mesh-icons were visible.


g)
Observations e) and f) were observed, _every single time_.



=================================================================================



== USE-CASE 2 ==

a)
Created file '/etc/modprobe.d/libertas.conf'.


b)
Ensured that '/etc/modprobe.d/libertas.conf' contained only the
following line ::

              options libertas libertas_disablemesh=0


c)
Ensured that there is no "echo 0 > "/sys/class/net/eth0/lbs_mesh"
script, anywhere on the XO-1.
This also meant, that there was no '/etc/powerd/postresume.d/disable_mesh.sh'.


d)
Rebooted.


e)
Wifi icons, and mesh-icons were visible in Neighborhood-View.


f)
Upon resume-from-suspend, NO ICONS COULD BE SEEN IN NEIGHBORHOOD VIEW.


g)
Observations e) and f) were observed, _every single time_.




=================================================================================



== USE-CASE 3 ==

a)
Ensured that there was no such file, that contained the following line ::

              options libertas libertas_disablemesh


b)
Ensured that there is no "echo 0 > "/sys/class/net/eth0/lbs_mesh"
script, anywhere on the XO-1.
This also meant, that there was no '/etc/powerd/postresume.d/disable_mesh.sh'.


c)
Rebooted.


d)
Wifi icons, and mesh-icons were visible in Neighborhood-View.


e)
Upon resume-from-suspend, wifi-icons and mesh-icons were visible in
Neighborhood-View.


f)
Observations d) and e) were observed, _every single time_.






== SUMMARY==

Barring use-case 2 (which looks a bit odd), use-cases 1 and 3 worked
perfectly as expected.
Thanks Paul for your prompt effort in generating the new kernel, with
the patch. Thanks again.





== JUST ONE LAST QUERY ==

Is the "disable-mesh-patch" the only difference between the following ::


          kernel-2.6.35.13_xo1-20120502.1603.olpc.bde819f.i586
            (kernel generated by you)
          kernel-2.6.35.13_xo1-20111005.1403.olpc.c2bd7b9.i586
            (original kernel present on XO-1)





Thanks again.
The issue stands resolved :)


The new kernel could be deployed, provided the answer to the (last,
only) query is a "yes". :)


Regards,
Ajay





On Thu, May 3, 2012 at 2:21 AM, Paul Fox <pgf at laptop.org> wrote:
> martin wrote:
>  > On Wed, May 2, 2012 at 11:07 AM, Ajay Garg <ajaygargnsit at gmail.com> wrote:
>  > > I believe that the number of packets being forwarded in this, would be
>  > > (much) less than in the scenario when the users are actually connected to a
>  > > mesh-network-channel.
>  > > Kindly affirm/reject my above notion :)
>  >
>  > I am a very pragmatic man, I would not waste your time if it was a maybe.
>  >
>  > There is no "much less" packet forwarding. You get 100% packet forwarding.
>  >
>  > And as Sam points out, the "UI" part of it can be set already with a
>  > gconf setting, via OOB. Unfortunatley, I have to agree with Anish's
>  > revert :-(
>  >
>  > Don't have the kernel patch info. Maybe look in git for changes in the
>  > libertas driver. It's a pretty low traffic driver, so you'll find it
>  > quick.
>
> i've cherry-picked 65a5f2b3 onto olpc-2.6.35, and the autobuilder
> did the rest.  this implements a new "libertas_disablemesh" module
> parameter which should keep mesh from being enabled.  please test:
>
>    http://rpmdropbox.laptop.org/f14-xo1/kernel-2.6.35.13_xo1-20120502.1603.olpc.bde819f.i586.rpm
>
> paul
>
>  >
>  > cheers,
>  >
>  >
>  >
>  > m
>  > --
>  >  martin.langhoff at gmail.com
>  >  martin at laptop.org -- Software Architect - OLPC
>  >  - ask interesting questions
>  >  - don't get distracted with shiny stuff  - working code first
>  >  - http://wiki.laptop.org/go/User:Martinlanghoff
>
> =---------------------
>  paul fox, pgf at laptop.org