[ath9k-devel] sensibility of driver

[ath9k-devel] sensibility of driver

[AlainBB]

Hi,

I have a D-link DWA-547 wifi card and I try this on my debian/lenny.
I Compile a new kernel 2.6.27, and it ... works.

But, the number of access point it's not the same with my windows XP.
I have 12 access points  with windows, and only 4 with my linux (the 4 
better signal but not the access point I want)
I suppose what the limit of sensibility is not the same. But I don't 
change the limit with the driver .
I try "iwconfig wlan0 sens -80 , but "sens" it's not recognize.
I change -95 to -150 in hw.c and core.h (and in other file in 
/driver/net/wirelesse) but it didn't work.

Have you a solution to change the thresold of sensibility ?

Thank.
-- 
by AlainBB
http://www.barbason.be

[ath9k-devel] sensibility of driver

[Luis R. Rodriguez]

On Mon, Dec 29, 2008 at 1:45 AM, AlainBB <alain@barbason.be> wrote:
> Hi,
>
> I have a D-link DWA-547 wifi card and I try this on my debian/lenny.
> I Compile a new kernel 2.6.27, and it ... works.
>
> But, the number of access point it's not the same with my windows XP.
> I have 12 access points  with windows, and only 4 with my linux (the 4
> better signal but not the access point I want)
> I suppose what the limit of sensibility is not the same. But I don't
> change the limit with the driver .
> I try "iwconfig wlan0 sens -80 , but "sens" it's not recognize.
> I change -95 to -150 in hw.c and core.h (and in other file in
> /driver/net/wirelesse) but it didn't work.
>
> Have you a solution to change the thresold of sensibility ?

We ignore SIOCSIWSENS in mac80211 and as such no mac80211 driver uses it.

If you have small issues with ath9k on 2.6.27 and want to get an
improved driver I would recommend to upgrade to the latest stable
kernel, now 2.6.28, or get the very latest and greatest by using
what's on wireless-testing directly or through compat-wireless:

http://wireless.kernel.org/en/users/Download

ath9k went into the kernel first on 2.6.27 and after that has received
considerable updates. ath9k is only able to be advanced so much on
2.6.27 as that is a stable kernel and as such only bug fixes/oops will
be accepted. This is an upstream policy to avoid regressions by
introducing "new code". This is actually an old practice, it is just a
bit more strict now and of course what is a bug is debatable but if
you would like to address a specific issue with ath9k you should see
if its present with the driver in wireless-testing/compat-wireless. If
its not a panic and requires a lot of code changes chances are a "fix"
will not go in to 2.6.27.

To give you a more concerete example, although we had a patch to fix
and enable aggregation on 2.6.27 [1] the patches are too intrusive to
introduce for the 2.6.27 release, even after the release.

Please consider trying out the latest and greatest.

[1] http://www.kernel.org/pub/linux/kernel/people/mcgrof/patches/mac80211/aggrv9-2.6.27/

  Luis

[ath9k-devel] sensibility of driver

[AlainBB]

Luis R. Rodriguez wrote:
> On Mon, Dec 29, 2008 at 1:45 AM, AlainBB <alain@barbason.be> wrote:
>> Hi,
>>
>> I have a D-link DWA-547 wifi card and I try this on my debian/lenny.
>> I Compile a new kernel 2.6.27, and it ... works.
>>
>> But, the number of access point it's not the same with my windows XP.
>> I have 12 access points  with windows, and only 4 with my linux (the 4
>> better signal but not the access point I want)
>> I suppose what the limit of sensibility is not the same. But I don't
>> change the limit with the driver .
>> I try "iwconfig wlan0 sens -80 , but "sens" it's not recognize.
>> I change -95 to -150 in hw.c and core.h (and in other file in
>> /driver/net/wirelesse) but it didn't work.
>>
>> Have you a solution to change the thresold of sensibility ?
> 
> We ignore SIOCSIWSENS in mac80211 and as such no mac80211 driver uses it.
> 
> If you have small issues with ath9k on 2.6.27 and want to get an
> improved driver I would recommend to upgrade to the latest stable
> kernel, now 2.6.28, or get the very latest and greatest by using
> what's on wireless-testing directly or through compat-wireless:
l.org/pub/linux/kernel/people/mcgrof/patches/mac80211/aggrv9-2.6.27/


>   Luis
> 
hi,

Thank for the information. I compile the 2.6.28 but there are no 
difference for the number of Access Point.

I'm ready to search myself to change file .c, but have you a idea where 
are the files to change to improve the sensibility, or reduce a thresold ?

thank.

PS : Just for fun, I work with windows to have my connection, and with 
linux/debian in a vmware to write this mail :-)


-- 
by AlainBB
http://www.barbason.be

[ath9k-devel] sensibility of driver

[Luis R. Rodriguez]

On Tue, Dec 30, 2008 at 03:47:11AM -0800, AlainBB wrote:
> Luis R. Rodriguez wrote:
> > On Mon, Dec 29, 2008 at 1:45 AM, AlainBB <alain@barbason.be> wrote:
> >> Hi,
> >>
> >> I have a D-link DWA-547 wifi card and I try this on my debian/lenny.
> >> I Compile a new kernel 2.6.27, and it ... works.
> >>
> >> But, the number of access point it's not the same with my windows XP.
> >> I have 12 access points  with windows, and only 4 with my linux (the 4
> >> better signal but not the access point I want)
> >> I suppose what the limit of sensibility is not the same. But I don't
> >> change the limit with the driver .
> >> I try "iwconfig wlan0 sens -80 , but "sens" it's not recognize.
> >> I change -95 to -150 in hw.c and core.h (and in other file in
> >> /driver/net/wirelesse) but it didn't work.
> >>
> >> Have you a solution to change the thresold of sensibility ?
> >
> > We ignore SIOCSIWSENS in mac80211 and as such no mac80211 driver uses it.
> >
> > If you have small issues with ath9k on 2.6.27 and want to get an
> > improved driver I would recommend to upgrade to the latest stable
> > kernel, now 2.6.28, or get the very latest and greatest by using
> > what's on wireless-testing directly or through compat-wireless:
> l.org/pub/linux/kernel/people/mcgrof/patches/mac80211/aggrv9-2.6.27/
> 
> 
> >   Luis
> >
> hi,
> 
> Thank for the information. I compile the 2.6.28 but there are no
> difference for the number of Access Point.
> 
> I'm ready to search myself to change file .c, but have you a idea where
> are the files to change to improve the sensibility, or reduce a thresold ?

Before trying to change things you may want to try wireless-testing or compile
from compat-wireless as that is where we have our latest and greatest.

You can read about how to get the wireless-testing tree using git here:

http://wireless.kernel.org/en/developers/Documentation/git-guide

With compat-wireless you just download the wireless framework and drivers
and get to compile it for older kernels:

http://wireless.kernel.org/en/users/Download

  Luis