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Date:   Wed, 05 May 2021 13:06:44 +0000
To:     Johannes Berg <johannes@sipsolutions.net>
From:   Michael Yartys <michael.yartys@protonmail.com>
Cc:     "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Reply-To: Michael Yartys <michael.yartys@protonmail.com>
Subject: Re: Possible bug in iwlwifi
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Sorry for being a bit spammy here, but I forgot that I could simply run "iw=
 scan" on one of my two routers to see how it sees the network on the other=
 router:

$ iw dev wlan1 scan -u
BSS redacted(on wlan1)
=09TSF: 0 usec (0d, 00:00:00)
=09freq: 2412
=09beacon interval: 100 TUs
=09capability: ESS (0x0431)
=09signal: -65.00 dBm
=09last seen: 1930 ms ago
=09Information elements from Probe Response frame:
=09SSID: OpenWrt_
=09RSN:=09 * Version: 1
=09=09 * Group cipher: CCMP
=09=09 * Pairwise ciphers: CCMP
=09=09 * Authentication suites: PSK FT/PSK PSK/SHA-256 SAE FT/SAE
=09=09 * Capabilities: 16-PTKSA-RC 1-GTKSA-RC MFP-capable (0x008c)
=09HT capabilities:
=09=09Capabilities: 0x19ed
=09=09=09RX LDPC
=09=09=09HT20
=09=09=09SM Power Save disabled
=09=09=09RX HT20 SGI
=09=09=09RX HT40 SGI
=09=09=09TX STBC
=09=09=09RX STBC 1-stream
=09=09=09Max AMSDU length: 7935 bytes
=09=09=09DSSS/CCK HT40
=09=09Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
=09=09Minimum RX AMPDU time spacing: 8 usec (0x06)
=09=09HT TX/RX MCS rate indexes supported: 0-31
=09HT operation:
=09=09 * primary channel: 1
=09=09 * secondary channel offset: no secondary
=09=09 * STA channel width: 20 MHz

Michael Yartys

=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 Original Me=
ssage =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90

On Wednesday, May 5th, 2021 at 2:37 PM, Michael Yartys <michael.yartys@prot=
onmail.com> wrote:

> =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 Original =
Message =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90
>
> On Wednesday, May 5th, 2021 at 2:25 PM, Michael Yartys michael.yartys@pro=
tonmail.com wrote:
>
> > =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 Origina=
l Message =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=
=90
> >
> > On Wednesday, May 5th, 2021 at 2:09 PM, Johannes Berg johannes@sipsolut=
ions.net wrote:
> >
> > > On Wed, 2021-05-05 at 12:05 +0000, Michael Yartys wrote:
> > >
> > > > Hello
> > > >
> > > > I've been testing out WPA3/WPA2-mixed networks on my OpenWrt router=
,
> > > >
> > > > and I noticed whenever I enable 802.11r the network doesn't show up=
 in
> > > >
> > > > the list of Wi-Fi networks in NetworkManager. I initially thought t=
his
> > > >
> > > > was due to some bug with wpa_supplicant, but running "iw dev wlp18s=
0
> > > >
> > > > scan" also fails to list the network. If I'm not mistaken, iw doesn=
't
> > > >
> > > > use wpa_supplicant to scan for networks, so that rules out
> > > >
> > > > wpa_supplicant. That means something deeper in the stack is causing
> > > >
> > > > this, and my guess falls on iwlwifi.
> > >
> > > Indeed, that's super strange.
> > >
> > > Are you able to see the network from another linux machine, and could
> > >
> > > maybe do a packet capture there? Or maybe just do
> > >
> > > iw wlan0 scan dump -u
> > >
> > > on another system that can see it?
> >
> > Unfortunately my other laptop also has a Intel 7260 card and can't see =
the network. My iPad and Android phone are both able to see the network, bu=
t they're unable to connect to it.
>
> I don't know if it's of any help, but here's what WiFiAnalyzer reports ab=
out the network on my Android 11 phone: https://imgur.com/a/dn0HwhG
>
> > > johannes