Re: [BUG?] b43: can't connect to WPA3 network (nohwcrypt=1)

From: Rui Salvaterra <rsalvaterra@gmail.com>
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: "Kalle Valo" <kvalo@codeaurora.org>, "Michael Büsch" <m@bues.ch>,
	linux-wireless@vger.kernel.org, b43-dev@lists.infradead.org
Subject: Re: [BUG?] b43: can't connect to WPA3 network (nohwcrypt=1)
Date: Fri, 22 May 2020 21:40:22 +0100	[thread overview]
Message-ID: <CALjTZvZV4kwLgoTijxsC2AYcxGeT1R_fsTdh3Gb=M03Rn_RsAg@mail.gmail.com> (raw)
In-Reply-To: <f1f97888-e7f6-d272-6ed1-8c040d8a7c91@lwfinger.net>

On Fri, 22 May 2020 at 19:02, Larry Finger <Larry.Finger@lwfinger.net> wrote:
>
> Rui,
>
> Does this one-line
> patch work for WPA3 without setting the nohwcrypt option?

Ok, so it "works", but I don't know what actually happened (I didn't
do any performance testing yet). I got this relevant output on my
kmsg…

rui@mcnugget:~$ dmesg | awk '(/80211/ || /b43/ || /wlan0/)'
[    0.000000] Kernel command line: BOOT_IMAGE=/vmlinux-5.7.0-rc6+
root=UUID=849bbef3-007e-491e-b187-9e259680c2e2 ro mitigations=off
b43.qos=0 b43.verbose=3 usbhid.mousepoll=16 quiet splash
[    0.035705] b43-pci-bridge 0001:10:12.0: enabling device (0004 -> 0006)
[    0.210299] b43-pci-bridge 0001:10:12.0: Sonics Silicon Backplane
found on PCI device 0001:10:12.0
[    3.361908] b43-phy0: Broadcom 4318 WLAN found (core revision 9)
[    3.454235] b43-phy0: Found PHY: Analog 3, Type 2 (G), Revision 7
[    3.454259] b43-phy0: Found Radio: Manuf 0x17F, ID 0x2050, Revision
8, Version 0
[    3.485125] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[   28.697945] b43-phy0: Loading firmware version 666.2 (2011-02-23 01:15:07)
[   28.730381] b43-phy0 debug: Chip initialized
[   28.731389] b43-phy0 debug: 32-bit DMA initialized
[   28.731400] b43-phy0 debug: QoS disabled
[   28.792272] b43-phy0 debug: Wireless interface started
[   28.820318] b43-phy0 debug: Adding Interface type 2
[   33.944771] wlan0: authenticate with 04:f0:21:24:28:44
[   33.970449] wlan0: send auth to 04:f0:21:24:28:44 (try 1/3)
[   34.026222] wlan0: authenticate with 04:f0:21:24:28:44
[   34.026241] wlan0: send auth to 04:f0:21:24:28:44 (try 1/3)
[   34.028522] wlan0: authenticated
[   34.043256] wlan0: associate with 04:f0:21:24:28:44 (try 1/3)
[   34.046946] wlan0: RX AssocResp from 04:f0:21:24:28:44 (capab=0x431
status=30 aid=1)
[   34.046964] wlan0: 04:f0:21:24:28:44 rejected association
temporarily; comeback duration 1000 TU (1024 ms)
[   35.122051] wlan0: associate with 04:f0:21:24:28:44 (try 2/3)
[   35.125547] wlan0: RX AssocResp from 04:f0:21:24:28:44 (capab=0x431
status=0 aid=1)
[   35.125808] wlan0: associated
[   35.268256] b43-phy0 debug: Using hardware based encryption for
keyidx: 0, mac: 04:f0:21:24:28:44
[   35.268762] b43-phy0 debug: Using hardware based encryption for
keyidx: 2, mac: ff:ff:ff:ff:ff:ff
[   35.358586] wlan0: failed to set key (5, ff:ff:ff:ff:ff:ff) to hardware (-22)
[   35.358977] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   87.283220] wlan0: failed to set key (4, ff:ff:ff:ff:ff:ff) to hardware (-22)
[   87.283521] b43-phy0 debug: Using hardware based encryption for
keyidx: 1, mac: ff:ff:ff:ff:ff:ff
rui@mcnugget:~$

Meanwhile, iw list shows all the possible software cyphers:

    Supported Ciphers:
        * WEP40 (00-0f-ac:1)
        * WEP104 (00-0f-ac:5)
        * TKIP (00-0f-ac:2)
        * CCMP-128 (00-0f-ac:4)
        * CCMP-256 (00-0f-ac:10)
        * GCMP-128 (00-0f-ac:8)
        * GCMP-256 (00-0f-ac:9)
        * CMAC (00-0f-ac:6)
        * CMAC-256 (00-0f-ac:13)
        * GMAC-128 (00-0f-ac:11)
        * GMAC-256 (00-0f-ac:12)

What I'm not sure is if b43 is doing all the cyphers it supports in
hardware and falling back to software just for the unsupported ones,
or if it's doing everything in software.