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From: Thomas Pedersen <thomas@adapt-ip.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless <linux-wireless@vger.kernel.org>, Jouni Malinen <j@w1.fi>
Subject: Re: [PATCH v2 00/22] add support for S1G association
Date: Tue, 08 Sep 2020 11:30:30 -0700	[thread overview]
Message-ID: <c00bc0f836b1fc82bce9e83f7975d092@adapt-ip.com> (raw)
In-Reply-To: <da06b5074a5d40d811a67656048f3afa262ff134.camel@sipsolutions.net>

On 2020-09-06 09:04, Johannes Berg wrote:
> On Mon, 2020-08-31 at 13:55 -0700, Thomas Pedersen wrote:
>> 
>> Note the mac80211_hwsim S1G support introduces a regression in a few
>> hostap hwsim tests. This is because when processing the reported 
>> bands,
>> hostap assumes freq < 4000 is 11b, and the actual 11b/g band is
>> overwritten by the S1G band info. Though it does count as a userspace
>> regression, I'm not sure there is much to do about it besides apply a
>> small patch to hostapd which treats freq < 2000 as an unknown band.
>> 
>> After the hostap workaround
>> (https://lists.infradead.org/pipermail/hostap/2020-August/038748.html),
>> these patches continue to pass the hwsim tests as well as HEAD.
> 
> 
> That sounds like we could "hack around" it by sending the S1G data
> first, and then the 2.4 GHz, so the latter overwrites it on broken
> versions?

Yes that could work.

> Not sure it's worth it though, I'd say it depends a bit on what real
> hardware plans are?
> 
> I mean, if it's only hwsim for now ... who cares? And if it's going to
> be special hardware that only does S1G, then also meh, you need newer
> versions to support it, big deal.

AFAIK there are no multi-band S1G chips. The initial focus (from WFA) 
seems
to be industrial IOT.

> But if OTOH a commonly used chipset like e.g. ath9k or ath10k will get
> S1G support, then that'd be more relevant?

-- 
thomas

      reply	other threads:[~2020-09-08 18:30 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-31 20:55 [PATCH v2 00/22] add support for S1G association Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 01/22] ieee80211: redefine S1G bits with GENMASK Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 02/22] nl80211: advertise supported channel width in S1G Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 03/22] cfg80211: regulatory: handle S1G channels Thomas Pedersen
2020-09-05 18:38   ` Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 04/22] nl80211: correctly validate S1G beacon head Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 05/22] nl80211: support setting S1G channels Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 06/22] {cfg,mac}80211: get correct default channel width for S1G Thomas Pedersen
2020-09-18 10:38   ` Johannes Berg
2020-09-21  4:59     ` Thomas Pedersen
2020-09-21  7:01       ` Johannes Berg
2020-09-21 16:26         ` Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 07/22] mac80211: s1g: choose scanning width based on frequency Thomas Pedersen
2020-09-18 10:40   ` Johannes Berg
2020-09-21  5:06     ` Thomas Pedersen
2020-09-21  6:58       ` Johannes Berg
2020-08-31 20:55 ` [PATCH v2 08/22] nl80211: support S1G capabilities Thomas Pedersen
2020-09-18 10:41   ` Johannes Berg
2020-09-18 10:47   ` Johannes Berg
2020-09-21  4:34     ` Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 09/22] mac80211: support S1G STA capabilities Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 10/22] cfg80211: convert S1G beacon to scan results Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 11/22] cfg80211: parse S1G Operation element for BSS channel Thomas Pedersen
2020-09-18 10:45   ` Johannes Berg
2020-09-21  5:12     ` Thomas Pedersen
2020-09-21  6:54       ` Johannes Berg
2020-08-31 20:55 ` [PATCH v2 12/22] mac80211: convert S1G beacon to scan results Thomas Pedersen
2020-09-18 10:48   ` Johannes Berg
2020-09-21  5:45     ` Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 13/22] cfg80211: handle Association Response from S1G STA Thomas Pedersen
2020-09-18 10:50   ` Johannes Berg
2020-09-21  5:52     ` Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 14/22] mac80211: encode listen interval for S1G Thomas Pedersen
2020-09-18 10:51   ` Johannes Berg
2020-09-21  5:56     ` Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 15/22] mac80211: don't calculate duration " Thomas Pedersen
2020-09-18 10:52   ` Johannes Berg
2020-09-18 10:55     ` Johannes Berg
2020-09-21  6:03     ` Thomas Pedersen
2020-09-21  6:51       ` Johannes Berg
2020-08-31 20:55 ` [PATCH v2 16/22] mac80211: handle S1G low rates Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 17/22] mac80211: avoid rate init for S1G band Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 18/22] mac80211: receive and process S1G beacons Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 19/22] mac80211: support S1G association Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 20/22] nl80211: include frequency offset in survey info Thomas Pedersen
2020-08-31 20:55 ` [PATCH v2 21/22] mac80211_hwsim: indicate support for S1G Thomas Pedersen
2020-09-06  8:49   ` [mac80211_hwsim] 8cafe19852: hwsim.fst_ap_config_default.fail kernel test robot
2020-09-06  8:49     ` kernel test robot
2020-09-08 18:00     ` Thomas Pedersen
2020-09-08 18:41       ` Johannes Berg
2020-09-08 18:41         ` Johannes Berg
2020-09-08 18:53         ` Thomas Pedersen
2020-08-31 20:56 ` [PATCH v2 22/22] mac80211_hwsim: fix TSF timestamp write to S1G beacon Thomas Pedersen
2020-09-06 16:04 ` [PATCH v2 00/22] add support for S1G association Johannes Berg
2020-09-08 18:30   ` Thomas Pedersen [this message]

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