why differnet wlan drivers need different settings?

why differnet wlan drivers need different settings?

[Alexey Fisher]

May be this is the wrong plase to ask. 
The question is: Why differnet wlan drivers use different settings to stay 
silent - powered on but not trying to associate to any accespoint?
For example: ipw2200 - if wlan was connfigured like:

iwconfig wlan1 essid "my-ap" chan 6 ap my:aps:mac ?key s:pass

this will normaly connect to my secure ?AP. and if i set after this:
?
iwconfig wlan1 essid off ap off

it will connect to unsecure AP of my neighbour or of Dr.Evil :)
to disable association on ipw2200 i need to set all this and plus "chan 0".
With this cnowleg i want to set up iwl3945, and surprise it's not working. 
This driver do not accepted "chan 0" and instead of "essid off" it did 
"essid """

Are there any unified way to keep adapter powered on but not trying to 
associate to some AP?

Re: why differnet wlan drivers need different settings?

[Rafael J. Wysocki]

On Saturday, 25 of October 2008, Alexey Fisher wrote:
> May be this is the wrong plase to ask. 

Yeah, better ask that on linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org (CCed).

> The question is: Why differnet wlan drivers use different settings to stay 
> silent - powered on but not trying to associate to any accespoint?
> For example: ipw2200 - if wlan was connfigured like:
> 
> iwconfig wlan1 essid "my-ap" chan 6 ap my:aps:mac ?key s:pass
> 
> this will normaly connect to my secure ?AP. and if i set after this:
> ?
> iwconfig wlan1 essid off ap off
> 
> it will connect to unsecure AP of my neighbour or of Dr.Evil :)
> to disable association on ipw2200 i need to set all this and plus "chan 0".
> With this cnowleg i want to set up iwl3945, and surprise it's not working. 
> This driver do not accepted "chan 0" and instead of "essid off" it did 
> "essid """
> 
> Are there any unified way to keep adapter powered on but not trying to 
> associate to some AP?
> 
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Re: why differnet wlan drivers need different settings?

[John W. Linville]

On Sat, Oct 25, 2008 at 01:03:34PM +0200, Rafael J. Wysocki wrote:
> On Saturday, 25 of October 2008, Alexey Fisher wrote:
> > May be this is the wrong plase to ask. 
> 
> Yeah, better ask that on linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org (CCed).
> 
> > The question is: Why differnet wlan drivers use different settings to stay 
> > silent - powered on but not trying to associate to any accespoint?
> > For example: ipw2200 - if wlan was connfigured like:
> > 
> > iwconfig wlan1 essid "my-ap" chan 6 ap my:aps:mac ?key s:pass
> > 
> > this will normaly connect to my secure ?AP. and if i set after this:
> > ?
> > iwconfig wlan1 essid off ap off
> > 
> > it will connect to unsecure AP of my neighbour or of Dr.Evil :)
> > to disable association on ipw2200 i need to set all this and plus "chan 0".
> > With this cnowleg i want to set up iwl3945, and surprise it's not working. 
> > This driver do not accepted "chan 0" and instead of "essid off" it did 
> > "essid """
> > 
> > Are there any unified way to keep adapter powered on but not trying to 
> > associate to some AP?

That is from the bad-ole-days.  I could be wrong, but AFAIK only the
ipw2x00 drivers do that anyway.  I recently merged a patch to change
the default for that for ipw2200 into wireless-testing.  We should
probably have one for ipw2100 as well.

Anyway, there are module options for those.  Add "options ipw2200
associate=0" to /etc/modprobe.conf.

Hth!

John
-- 
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linville-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org			of your literate lifestyle.
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Re: why differnet wlan drivers need different settings?

[Alexey Fisher]

On Saturday 25 October 2008 15:55:12 John W. Linville wrote:
> On Sat, Oct 25, 2008 at 01:03:34PM +0200, Rafael J. Wysocki wrote:
> > On Saturday, 25 of October 2008, Alexey Fisher wrote:
> > > May be this is the wrong plase to ask.
> >
> > Yeah, better ask that on linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org (CCed).
> >
> > > The question is: Why differnet wlan drivers use different settings to
> > > stay silent - powered on but not trying to associate to any accespoint?
> > > For example: ipw2200 - if wlan was connfigured like:
> > >
> > > iwconfig wlan1 essid "my-ap" chan 6 ap my:aps:mac ?key s:pass
> > >
> > > this will normaly connect to my secure ?AP. and if i set after this:
> > > ?
> > > iwconfig wlan1 essid off ap off
> > >
> > > it will connect to unsecure AP of my neighbour or of Dr.Evil :)
> > > to disable association on ipw2200 i need to set all this and plus "chan
> > > 0". With this cnowleg i want to set up iwl3945, and surprise it's not
> > > working. This driver do not accepted "chan 0" and instead of "essid
> > > off" it did "essid """
> > >
> > > Are there any unified way to keep adapter powered on but not trying to
> > > associate to some AP?
>
> That is from the bad-ole-days.  I could be wrong, but AFAIK only the
> ipw2x00 drivers do that anyway.  I recently merged a patch to change
> the default for that for ipw2200 into wireless-testing.  We should
> probably have one for ipw2100 as well.
>
> Anyway, there are module options for those.  Add "options ipw2200
> associate=0" to /etc/modprobe.conf.

I use associate=0 with smole workaround:

diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index dcce354..92583c6 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -7582,7 +7582,7 @@ static int ipw_associate(void *data)
 
 	if (!(priv->config & CFG_ASSOCIATE) &&
 	    !(priv->config & (CFG_STATIC_ESSID |
-			      CFG_STATIC_CHANNEL | CFG_STATIC_BSSID))) {
+			      CFG_STATIC_BSSID))) {
 		IPW_DEBUG_ASSOC("Not attempting association (associate=0)\n");
 		return 0;
 	}

becouse networkmanager do not set channel=0 to be compartibel with other 
drivers. 
Are there any better solution?

Re: why differnet wlan drivers need different settings?

[Dan Williams]

On Sat, 2008-10-25 at 22:45 +0200, Alexey Fisher wrote:
> On Saturday 25 October 2008 15:55:12 John W. Linville wrote:
> > On Sat, Oct 25, 2008 at 01:03:34PM +0200, Rafael J. Wysocki wrote:
> > > On Saturday, 25 of October 2008, Alexey Fisher wrote:
> > > > May be this is the wrong plase to ask.
> > >
> > > Yeah, better ask that on linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org (CCed).
> > >
> > > > The question is: Why differnet wlan drivers use different settings to
> > > > stay silent - powered on but not trying to associate to any accespoint?
> > > > For example: ipw2200 - if wlan was connfigured like:
> > > >
> > > > iwconfig wlan1 essid "my-ap" chan 6 ap my:aps:mac ?key s:pass
> > > >
> > > > this will normaly connect to my secure ?AP. and if i set after this:
> > > > ?
> > > > iwconfig wlan1 essid off ap off
> > > >
> > > > it will connect to unsecure AP of my neighbour or of Dr.Evil :)
> > > > to disable association on ipw2200 i need to set all this and plus "chan
> > > > 0". With this cnowleg i want to set up iwl3945, and surprise it's not
> > > > working. This driver do not accepted "chan 0" and instead of "essid
> > > > off" it did "essid """
> > > >
> > > > Are there any unified way to keep adapter powered on but not trying to
> > > > associate to some AP?
> >
> > That is from the bad-ole-days.  I could be wrong, but AFAIK only the
> > ipw2x00 drivers do that anyway.  I recently merged a patch to change
> > the default for that for ipw2200 into wireless-testing.  We should
> > probably have one for ipw2100 as well.
> >
> > Anyway, there are module options for those.  Add "options ipw2200
> > associate=0" to /etc/modprobe.conf.
> 
> I use associate=0 with smole workaround:
> 
> diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
> index dcce354..92583c6 100644
> --- a/drivers/net/wireless/ipw2200.c
> +++ b/drivers/net/wireless/ipw2200.c
> @@ -7582,7 +7582,7 @@ static int ipw_associate(void *data)
>  
>  	if (!(priv->config & CFG_ASSOCIATE) &&
>  	    !(priv->config & (CFG_STATIC_ESSID |
> -			      CFG_STATIC_CHANNEL | CFG_STATIC_BSSID))) {
> +			      CFG_STATIC_BSSID))) {
>  		IPW_DEBUG_ASSOC("Not attempting association (associate=0)\n");
>  		return 0;
>  	}

Yeah, that's probably appropriate, otherwise just 'iwconfig eth1 channel
6' would trigger association to _something_, which is wrong.  Changing
the channel should (and does) trigger reassociation, but only if there
is an SSID to associate with!

In plain english, this if statement should read:

"If associate=0, and no locked SSID or locked BSSID have been set, don't
associate"

> becouse networkmanager do not set channel=0 to be compartibel with other 
> drivers. 

wpa_supplicant sets (or doesn't set) the channel, not NM...

Care to submit a patch with the appropriate signed-off-by tag?

Thanks!
Dan

Re: why differnet wlan drivers need different settings?

[Dan Williams]

On Mon, 2008-10-27 at 12:13 -0400, Dan Williams wrote:
> On Sat, 2008-10-25 at 22:45 +0200, Alexey Fisher wrote:
> > On Saturday 25 October 2008 15:55:12 John W. Linville wrote:
> > > On Sat, Oct 25, 2008 at 01:03:34PM +0200, Rafael J. Wysocki wrote:
> > > > On Saturday, 25 of October 2008, Alexey Fisher wrote:
> > > > > May be this is the wrong plase to ask.
> > > >
> > > > Yeah, better ask that on linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org (CCed).
> > > >
> > > > > The question is: Why differnet wlan drivers use different settings to
> > > > > stay silent - powered on but not trying to associate to any accespoint?
> > > > > For example: ipw2200 - if wlan was connfigured like:
> > > > >
> > > > > iwconfig wlan1 essid "my-ap" chan 6 ap my:aps:mac ?key s:pass
> > > > >
> > > > > this will normaly connect to my secure ?AP. and if i set after this:
> > > > > ?
> > > > > iwconfig wlan1 essid off ap off
> > > > >
> > > > > it will connect to unsecure AP of my neighbour or of Dr.Evil :)
> > > > > to disable association on ipw2200 i need to set all this and plus "chan
> > > > > 0". With this cnowleg i want to set up iwl3945, and surprise it's not
> > > > > working. This driver do not accepted "chan 0" and instead of "essid
> > > > > off" it did "essid """
> > > > >
> > > > > Are there any unified way to keep adapter powered on but not trying to
> > > > > associate to some AP?
> > >
> > > That is from the bad-ole-days.  I could be wrong, but AFAIK only the
> > > ipw2x00 drivers do that anyway.  I recently merged a patch to change
> > > the default for that for ipw2200 into wireless-testing.  We should
> > > probably have one for ipw2100 as well.
> > >
> > > Anyway, there are module options for those.  Add "options ipw2200
> > > associate=0" to /etc/modprobe.conf.
> > 
> > I use associate=0 with smole workaround:
> > 
> > diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
> > index dcce354..92583c6 100644
> > --- a/drivers/net/wireless/ipw2200.c
> > +++ b/drivers/net/wireless/ipw2200.c
> > @@ -7582,7 +7582,7 @@ static int ipw_associate(void *data)
> >  
> >  	if (!(priv->config & CFG_ASSOCIATE) &&
> >  	    !(priv->config & (CFG_STATIC_ESSID |
> > -			      CFG_STATIC_CHANNEL | CFG_STATIC_BSSID))) {
> > +			      CFG_STATIC_BSSID))) {
> >  		IPW_DEBUG_ASSOC("Not attempting association (associate=0)\n");
> >  		return 0;
> >  	}
> 
> Yeah, that's probably appropriate, otherwise just 'iwconfig eth1 channel
> 6' would trigger association to _something_, which is wrong.  Changing
> the channel should (and does) trigger reassociation, but only if there
> is an SSID to associate with!
> 
> In plain english, this if statement should read:
> 
> "If associate=0, and no locked SSID or locked BSSID have been set, don't
> associate"
> 
> > becouse networkmanager do not set channel=0 to be compartibel with other 
> > drivers. 
> 
> wpa_supplicant sets (or doesn't set) the channel, not NM...
> 
> Care to submit a patch with the appropriate signed-off-by tag?

Ping; could you submit the patch with the proper signed-off-by
statement?

Thanks!
Dan

Re: why differnet wlan drivers need different settings?

[Alexey Fisher]

Am Montag, den 03.11.2008, 16:25 -0500 schrieb Dan Williams:

> Ping; could you submit the patch with the proper signed-off-by
> statement?
> 
> Thanks!
> Dan
Sorry didn't thought it was to me.
i did't had a time to find how to supply patch with git .. i think it
should be some thing with git-diff and git-formate-mail.. is it?
Can you please write how to do it correctly, i really do not haw time to
find it out now. 

signed-off-by: Alexey Fisher

diff --git a/drivers/net/wireless/ipw2200.c
b/drivers/net/wireless/ipw2200.c
index dcce354..d26beed 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -7581,8 +7581,7 @@ static int ipw_associate(void *data)
 	}
 
 	if (!(priv->config & CFG_ASSOCIATE) &&
-	    !(priv->config & (CFG_STATIC_ESSID |
-			      CFG_STATIC_CHANNEL | CFG_STATIC_BSSID))) {
+	    !(priv->config & (CFG_STATIC_ESSID | CFG_STATIC_BSSID))) {
 		IPW_DEBUG_ASSOC("Not attempting association (associate=0)\n");
 		return 0;
 	}

why differnet wlan drivers need different settings?

[Alexey Rempel]

May be this is the wrong plase to ask. 
The question is: Why differnet wlan drivers use different settings to stay 
silent - powered on but not trying to associate to any accespoint?
For example: ipw2200 - if wlan was connfigured like:

iwconfig wlan1 essid "my-ap" chan 6 ap my:aps:mac  key s:pass

this will normaly connect to my secure  AP. and if i set after this:
 
iwconfig wlan1 essid off ap off

it will connect to unsecure AP of my neighbour or of Dr.Evil :)
to disable association on ipw2200 i need to set all this and plus "chan 0".
With this cnowleg i want to set up iwl3945, and surprise it's not working. 
This driver do not accepted "chan 0" and instead of "essid off" it did 
"essid """

Are there any unified way to keep adapter powered on but not trying to 
associate to some AP.