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From: Johannes Berg <johannes@sipsolutions.net>
To: "Rafał Miłecki" <zajec5@gmail.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: Re: Exposing enum ieee80211_channel_flags to user
Date: Thu, 11 Jun 2015 11:45:22 +0200	[thread overview]
Message-ID: <1434015922.1915.6.camel@sipsolutions.net> (raw)
In-Reply-To: <CACna6rwHXzGTZ+NS9PpZENJATVzRzm1Wkija0_CrveMoM05d5g@mail.gmail.com> (sfid-20150611_113544_857208_070F0480)

On Thu, 2015-06-11 at 11:35 +0200, Rafał Miłecki wrote:

> iw also wasn't helpful:
> Frequencies:
>         * 5180 MHz [36] (30.0 dBm)
>         * 5200 MHz [40] (30.0 dBm)
>         * 5220 MHz [44] (30.0 dBm)
>         * 5240 MHz [48] (30.0 dBm)
> 
> After some in-kernel debugging (nl80211_set_wiphy,
> cfg80211_chandef_usable, cfg80211_secondary_chans_ok) I finally
> realized it was because of:
> IEEE80211_CHAN_NO_80MHZ
> 
> Do you have any idea how we could handle such cases nicely? To let
> user find out what's going on (wrong)?
> 
> Should "iw" be extended to print flag names? Or should hostapd check
> for channels in some smarter way? Any other ideas?

We already have the flags exposed to iw, it's just not printing them.
There was a patch to print them, but it wasn't complete, and the
submitter kinda went away. You can see the discussion here:

http://mid.gmane.org/1425452686-28196-1-git-send-email-arnagara@qti.qualcomm.com

johannes


  reply	other threads:[~2015-06-11  9:45 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-11  9:35 Exposing enum ieee80211_channel_flags to user Rafał Miłecki
2015-06-11  9:45 ` Johannes Berg [this message]
2015-06-11  9:46   ` Johannes Berg
2015-06-11 10:00     ` Rafał Miłecki
2015-06-11 10:01       ` Johannes Berg
2015-06-11 13:16         ` Ben Greear
2015-06-11 13:27           ` Johannes Berg

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