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From: Johannes Berg <johannes@sipsolutions.net>
To: Thomas Pedersen <thomas@adapt-ip.com>
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: Sun, 06 Sep 2020 18:04:24 +0200	[thread overview]
Message-ID: <da06b5074a5d40d811a67656048f3afa262ff134.camel@sipsolutions.net> (raw)
In-Reply-To: <20200831205600.21058-1-thomas@adapt-ip.com>

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?

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.

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

johannes


  parent reply	other threads:[~2020-09-06 16:05 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 ` Johannes Berg [this message]
2020-09-08 18:30   ` [PATCH v2 00/22] add support for S1G association Thomas Pedersen

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