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From: Ben Greear <greearb@candelatech.com>
To: "hostap@lists.shmoo.com" <hostap@lists.shmoo.com>,
	ath10k <ath10k@lists.infradead.org>
Subject: Re: Scanning all 5Ghz channels with AC NIC.
Date: Tue, 25 Mar 2014 08:50:42 -0700	[thread overview]
Message-ID: <5331A5D2.3030004@candelatech.com> (raw)
In-Reply-To: <20140325144255.GA30784@w1.fi>

On 03/25/2014 07:42 AM, Jouni Malinen wrote:
> On Mon, Mar 24, 2014 at 11:10:44AM -0700, Ben Greear wrote:
>> I notice this issue while trying to scan specific channels with
>> an ath10k NIC.
>>
>> If I configure supplicant to use a specific freq list, it will fail:
>>
>> 1395683887.458813: nl80211: Scan frequency 5170 MHz
>> 1395683887.458823: nl80211: Scan frequency 5180 MHz
> ...
> 
> You need to be quite careful when using freq_list. wpa_supplicant will
> use exactly what is provided there and if cfg80211 does not like what it
> sees, it will reject this. Apparently duplicate entries would hit that
> and so would channels that the driver does not support.
> 
> In general, it is much easier to just do "wpa_cli scan freq=4900-6000"
> if you just want to scan all the enabled 5 GHz channels.


I use the freq_list to effectively disable 2.4Ghz, for instance when trying
to force a station to act like /a only instead of /a/b/g.

Maybe there is a better way?  (I don't often use wpa_cli directly,
so that won't help my case...)

Thanks,
Ben


-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com


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      reply	other threads:[~2014-03-25 15:51 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-24 18:10 Scanning all 5Ghz channels with AC NIC Ben Greear
2014-03-24 19:33 ` Janusz Dziedzic
2014-03-24 19:47   ` Ben Greear
2014-03-24 20:04     ` Ben Greear
2014-03-24 20:06     ` Janusz Dziedzic
2014-03-25 14:42 ` Jouni Malinen
2014-03-25 15:50   ` Ben Greear [this message]

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