From: Johannes Berg <johannes@sipsolutions.net>
To: Michal Kazior <michal.kazior@tieto.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: [PATCH] mac80211: don't downgrade VHT20 to HT20
Date: Tue, 25 Feb 2014 13:10:10 +0100 [thread overview]
Message-ID: <1393330210.4170.1.camel@jlt4.sipsolutions.net> (raw)
In-Reply-To: <1393330040.4170.0.camel@jlt4.sipsolutions.net> (sfid-20140225_130729_700302_B6F153BB)
On Tue, 2014-02-25 at 13:07 +0100, Johannes Berg wrote:
> On Tue, 2014-02-25 at 12:27 +0100, Michal Kazior wrote:
> > The check led to VHT-capable devices being unable
> > to pair in VHT20 and were instead paired in HT20.
>
> ??
>
> 802.11ac says:
> ---
> A VHT STA shall support the following features:
> [...]
> — 20 MHz, 40 MHz, and 80 MHz channel widths
> [...]
> ---
>
> so how can you have a device that's "VHT-capable" but doesn't support 40
> MHz?
And also:
A VHT STA shall set the Supported Channel Width Set subfield in its HT
Capabilities element HT Capabilities Info field to 1, indicating that
both 20 MHz operation and 40 MHz operation are supported.
(10.39.1)
johannes
next prev parent reply other threads:[~2014-02-25 12:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-25 11:27 [PATCH] mac80211: don't downgrade VHT20 to HT20 Michal Kazior
2014-02-25 12:07 ` Johannes Berg
2014-02-25 12:10 ` Johannes Berg [this message]
2014-02-25 13:11 ` Michal Kazior
2014-03-19 14:22 ` Johannes Berg
2014-03-20 9:39 ` Michal Kazior
2014-03-21 12:03 ` Johannes Berg
2014-05-09 8:39 ` Johannes Berg
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