Questions on libertas driver

[Vladimir Davydov]

Hello Cyril,

I have working version of the libertas driver for the  blackfin (BF533). 
I have fixed all memory alligments crashes what I found. Most of these patches 
are allready applied in the libertas tree.
I can give you the snapshot of sources if you want.

Best regards,
Vladimir.






> Holger, I  answer below :
>
> Holger Schurig a écrit :
> >>I sent some message some month ago about implementing libertas
> >>driver in a blackfin processor based board.
> >
> >Nice.
> >
> >>After that my idea was to use the last libertas sources, I got
> >>it in the 2.6.24RC1, but there was error during compilation
> >>because the libertas source included in the 2.6.24RC1 uses
> >>kernel functions that are not present in my 2.6.19 kernel.
> >
> >And you cannot use 2.6.24rc on your Blackfin?  Aren't all needed
> >patches for Blackfin upstream?
> >
> >Which function exactly isn't in 2.6.19 ?
>
> In fact the ucLinux distribution I use implement a kernel, which is the
> 2.6.19. Maybe I can replace it by a 2.6.24 and it will works, but I
> asked ucLinux for blackin mainteners and they are unsure, and they
> advised me to stay on the 2.6.19 until they implement themselves the
> last official kernel version in the ucLinux distribution.
>
> >>Today I come back on this project, and I want to restart from
> >>the latest libertas sources. But since some month, I see a
> >>very very big quantity of patch on the mailing list. Can I
> >>find somewhere the last libertas tree which include all the
> >>patch ?
> >
> >Yes, it's in the wireless-2.6 git tree, branch everything.
> >
> >$ git clone
> > git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6.git $
> > cd wireless-2.6
> >$ git checkout -b everything origin/everything
> >
> >IF you already have a recent git tree checkout, you can speed up
> >this tremendously by using "--reference DIRECTORY--GIT-TREE"
> >on the "git clone" command.
>
> Great, thank you for that ! I will be able to use the last libertas
> sources when the last official kernel will be used in the ucLinux
> distribution.
> For now I work with older libertas sources which compile OK with the
> 2.6.19 kernel version of the ucLinux distribution.
>
> >>Other question, when the libertas_cs.ko module is loaded, and
> >>firmware downloaded, eth0 appear when I do "ifconfig eth0 up",
> >>but how can I set the wireless parameters ?
> >
> >With "iwconfig" from wireless-tools.
>
> I found the problem, see below
>
> >$ ifconfig eth0 up
> >$ iwconfig eth0 essid BLAH
> >$ iwconfig eth0 key s:12345
> >
> >This assumes that you have an access-point with ESSID "BLAH"
> >and the Web-Key "12345" around (very insecure). If you want
> >WPA/WPA2, you'd need wpasupplicant.
> >
> >After a second or so, another call to
> >
> >$ iwconfig
> >
> >shows you to which AP you're associated.
> >
> >>Habitually I use iwconfig, but it's not working with this
> >>card, iwconfig tell me that eth0 doesn't have wireless
> >>extension.
> >
> >Maybe it's not named eth0 because of some dump udev rename
> >rules?  Be assured that "iwconfig" works quite nicely with
> >libertas. I, for example, have this entry in my
> >/etc/udev/rules.d/z25_persistent-net.rules file:
> >
> >SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:16:41:72:f6:a8",
> > NAME="eth1"
> >
> >Be sure that you don't have clashes with other devices.
> >Maybe "ifconfig -a" before inserting the card can help you
> >here. Or try "iwconfig" without any parameters. This will
> >show you which 'ethernet' devices support wireless extensions.
>
> In fact with the libertas driver version I use, when I type iwconfig, it
> say me that eth0 (the only card) have no wireless extension.
> Thus I looked in the source code and I found the problem :
> In fact the pointers to wireless extension functions was commented :
>
> #ifdef  WIRELESS_EXT
> ///     dev->wireless_handlers = (struct iw_handler_def
> *)&libertas_handler_def;
> #endif
>
> #ifdef  WIRELESS_EXT
> ///     mesh_dev->wireless_handlers = (struct iw_handler_def
> *)&mesh_handler_def;
> #endif
>
> Thus I changed this to :
>
> //#ifdef  WIRELESS_EXT
>      dev->wireless_handlers = (struct iw_handler_def
> *)&libertas_handler_def;
> //#endif
>
> //#ifdef  WIRELESS_EXT
>      mesh_dev->wireless_handlers = (struct iw_handler_def
> *)&mesh_handler_def;
> //#endif
>
> And now iwconfig eth0 works.
> Now I try to connect on the AP but I have a kernel panic with non
> aligned data, but I already know the problem, I think I know how to
> solve the problem.
>
> >>Must I use specifics tools to configure the wireless
> >>parameters of the card (essid, etc...) ?
> >
> >No.
> >
> >
> >
> >PS: As a hint, write new messages, don't use the "reply" button of your
> > e-mail program to start a new thread.
>
> Oops, I am sorry.
>
> Regards,
> Cyril
>
>
> _______________________________________________
> libertas-dev mailing list
> libertas-dev at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/libertas-dev



-- 
Best regards!