netdev - Re: [PATCH v3 3/3] mac80211: mesh: fixed HT ies in beacon template

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Message-ID: <1c2d3cfc-b7fd-c8fd-4f74-14dd3aa3076e@gmail.com>
Date:	Tue, 2 Aug 2016 11:59:04 +0900
From:	Masashi Honma <masashi.honma@...il.com>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Yaniv Machani <yanivma@...com>, linux-kernel@...r.kernel.org,
	Meirav Kama <meiravk@...com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v3 3/3] mac80211: mesh: fixed HT ies in beacon template

> On 2016年08月01日 19:03, Johannes Berg wrote:
>>
>> But why is that behaviour *correct*? We still support 40 MHz bandwidth
>> things, we just don't use them if we disable HT40.

Or do you mean difference between "hardware capability" and "software 
capability" ?
Do you think IEEE80211_HT_CAP_SUP_WIDTH_20_40 bit should be 1 if the 
hardware capable of HT40 even though HT40 is disabled by 
wpa_supplicant/hostapd ?

I have tested with hostapd. I compared these 2 configfiles.

hostapd0.conf
	ht_capab=[HT40-]
hostapd1.conf
	#ht_capab=[HT40-]

The IEEE80211_HT_CAP_SUP_WIDTH_20_40 bit in beacon was below.

hostapd0.conf
	IEEE80211_HT_CAP_SUP_WIDTH_20_40 = 1
hostapd1.conf
	IEEE80211_HT_CAP_SUP_WIDTH_20_40 = 0

So I think the bit should be zero if disabled also for mesh peer.

Masashi Honma.