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RE: [PATCH] cfg80211/nl80211: Add support to report unsafe frequency ranges(s)

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Hi Johannes,

Let me also replace SAP with SoftAP.

So now commit text would be:

cfg80211/nl80211: Add API to report frequency range(s) to be avoided

Add support for WLAN driver to report frequency range(s) to be avoided because of interference. If SoftAP/P2P-GO is operating on interfering frequency then user space should stop and restart them avoiding interfering frequency range(s). User space may decide to continue operation on interfering frequency, but in such case, there might be impact on performance.

Regards,
Rajesh Chauhan


-----Original Message-----
From: Chauhan, Rajesh 
Sent: Thursday, October 17, 2013 10:20 AM
To: 'Johannes Berg'
Cc: linux-wireless@xxxxxxxxxxxxxxx; Rodriguez, Luis; Malinen, Jouni; Bahini, Henri; Chang, Leo; Luo, Xun; Chauhan, Rajesh
Subject: RE: [PATCH] cfg80211/nl80211: Add support to report unsafe frequency ranges(s)

Hi Johannes,

Thanks for your comment. Purpose of this patch is to add an API for WLAN driver to report frequency ranges which should be avoided for SAP/P2P-GO because of interference.

How about if I reword commit test as below?

cfg80211/nl80211: Add API to report frequency range(s) to be avoided

Add support for WLAN driver to report frequency range(s) to be avoided because of interference. If SAP/P2P-GO is operating on interfering frequency then user space should stop and restart them avoiding interfering frequency range(s). User space may decide to continue operation on interfering frequency, but in such case, there might be impact on performance.

Regards,
Rajesh Chauhan


-----Original Message-----
From: Johannes Berg [mailto:johannes@xxxxxxxxxxxxxxxx]
Sent: Thursday, October 17, 2013 7:41 AM
To: Chauhan, Rajesh
Cc: linux-wireless@xxxxxxxxxxxxxxx; Rodriguez, Luis; Malinen, Jouni
Subject: Re: [PATCH] cfg80211/nl80211: Add support to report unsafe frequency ranges(s)

On Wed, 2013-10-16 at 21:57 -0700, Rajesh Chauhan wrote:
> Add support for WLAN driver to report unsafe frequency range(s). 

Why?

> User
> space should move SAP/P2P-GO out of those unsafe frequency range(s).
> User space may decide to continue operation on unsafe frequency but in 
> such case there might be impact on performance because of interference.

SAP? I don't think SAP will move - they're pretty stuck in Walldorf :P

This is pretty strange patch, and very little justification.

"Unsafe" is also a really bad word.

johannes

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