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Message-ID: <1f428e2b-f73f-64ff-02d3-eefbcd11db89@broadcom.com>
Date:   Mon, 2 Jan 2023 20:23:56 +0100
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Subject: Re: brcmfmac: Unexpected cfg80211_set_channel: set chanspec ... fail,
 reason -52
To:     Stefan Wahren <stefan.wahren@i2se.com>,
        Arend van Spriel <aspriel@gmail.com>,
        Franky Lin <franky.lin@broadcom.com>,
        Hante Meuleman <hante.meuleman@broadcom.com>,
        Johannes Berg <johannes@sipsolutions.net>
Cc:     linux-wireless@vger.kernel.org,
        brcm80211-dev-list.pdl@broadcom.com,
        SHA-cyfmac-dev-list@infineon.com
References: <2635fd4f-dfa0-1d87-058b-e455cee96750@i2se.com>
From:   Arend van Spriel <arend.vanspriel@broadcom.com>
In-Reply-To: <2635fd4f-dfa0-1d87-058b-e455cee96750@i2se.com>
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+ Johannes

On 12/30/2022 6:39 PM, Stefan Wahren wrote:
> Hi,
> 
> since Linux 6.2-rc1 i noticed on my Raspberry Pi 3 B+ 
> (arm/multi_v7_defconfig) the following new error messages appear, even 
> if there is no Wifi connection. I suspect this is not a real issue, so 
> it would nice to get the rid of it:
> 
> [   26.303445] brcmfmac: brcmf_fw_alloc_request: using 
> brcm/brcmfmac43455-sdio for chip BCM4345/6
> [   26.303554] brcmfmac mmc1:0001:1: Direct firmware load for 
> brcm/brcmfmac43455-sdio.raspberrypi,3-model-b-plus.bin failed with error -2
> [   26.516752] brcmfmac_wcc: brcmf_wcc_attach: executing
> [   26.528264] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: 
> Jan  4 2021 19:56:29 version 7.45.229 (617f1f5 CY) FWID 01-2dbd9d2e
> [   27.076829] Bluetooth: hci0: BCM: features 0x2f
> [   27.078592] Bluetooth: hci0: BCM43455 37.4MHz Raspberry Pi 3+
> [   27.078601] Bluetooth: hci0: BCM4345C0 (003.001.025) build 0342
> [   30.142104] Adding 102396k swap on /var/swap.  Priority:-2 extents:1 
> across:102396k SS
> [   30.590017] Bluetooth: MGMT ver 1.22
> [  104.897615] brcmfmac: cfg80211_set_channel: set chanspec 0x100e fail, 
> reason -52
> [  104.897992] brcmfmac: cfg80211_set_channel: set chanspec 0xd022 fail, 
> reason -52
> [  105.007672] brcmfmac: cfg80211_set_channel: set chanspec 0xd026 fail, 
> reason -52
> [  105.117654] brcmfmac: cfg80211_set_channel: set chanspec 0xd02a fail, 
> reason -52
> [  105.227636] brcmfmac: cfg80211_set_channel: set chanspec 0xd02e fail, 
> reason -52
> [  106.987552] brcmfmac: cfg80211_set_channel: set chanspec 0xd090 fail, 
> reason -52
> [  106.987911] brcmfmac: cfg80211_set_channel: set chanspec 0xd095 fail, 
> reason -52
> [  106.988233] brcmfmac: cfg80211_set_channel: set chanspec 0xd099 fail, 
> reason -52
> [  106.988565] brcmfmac: cfg80211_set_channel: set chanspec 0xd09d fail, 
> reason -52
> [  106.988909] brcmfmac: cfg80211_set_channel: set chanspec 0xd0a1 fail, 
> reason -52
> 
> All of these 10 errors are repeated every 60 sec.

Catching up after the holidays ;-) Above chanspec values are invalid. 
0x100e = channel 14/bw 20MHz. The 'iw list' output shows all these 
channels are disabled. So who/what is trying to set these channels. 
Scanning sets the channel in firmware. Is this initiated from hostapd? 
Maybe trying ACS? As these are marked as disabled user-space should not 
use them. What I don't understand is why these pass the cfg80211 layer 
so adding Johannes here.

Regards,
Arend

> If i enable the debugging for brcmf_fil_cmd_data, i'm getting this:
> 
> [  107.069199] brcmfmac: Firmware error: BCME_BADCHAN (-20)
> [  107.069232] brcmfmac: cfg80211_set_channel: set chanspec 0x100e fail, 
> reason -52
> [  107.069597] brcmfmac: Firmware error: BCME_BADCHAN (-20)
> [  107.069610] brcmfmac: cfg80211_set_channel: set chanspec 0xd022 fail, 
> reason -52
> ...
> 
> Here some additional information:
> 
> $ iw info
> 
> Interface wlan0
>      ifindex 4
>      wdev 0x1
>      addr b8:27:eb:2e:ec:42
>      type managed
>      wiphy 0
>      channel 140 (5700 MHz), width: 20 MHz, center1: 5700 MHz
>      txpower 31.00 dBm
> 
> $ iw reg get
> 
> global
> country DE: DFS-ETSI
>      (2400 - 2483 @ 40), (N/A, 20), (N/A)
>      (5150 - 5250 @ 80), (N/A, 20), (N/A), NO-OUTDOOR, AUTO-BW
>      (5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS, AUTO-BW
>      (5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS
>      (5725 - 5875 @ 80), (N/A, 13), (N/A)
>      (57000 - 66000 @ 2160), (N/A, 40), (N/A)
> 
> phy#0
> country 99: DFS-UNSET
>      (2402 - 2482 @ 40), (6, 20), (N/A)
>      (2474 - 2494 @ 20), (6, 20), (N/A)
>      (5140 - 5360 @ 160), (6, 20), (N/A)
>      (5460 - 5860 @ 160), (6, 20), (N/A)
> 
> $ iw list
> 
> Wiphy phy0
>      max # scan SSIDs: 10
>      max scan IEs length: 2048 bytes
>      max # sched scan SSIDs: 16
>      max # match sets: 16
>      Retry short limit: 7
>      Retry long limit: 4
>      Coverage class: 0 (up to 0m)
>      Device supports roaming.
>      Device supports T-DLS.
>      Supported Ciphers:
>          * WEP40 (00-0f-ac:1)
>          * WEP104 (00-0f-ac:5)
>          * TKIP (00-0f-ac:2)
>          * CCMP-128 (00-0f-ac:4)
>          * CMAC (00-0f-ac:6)
>      Available Antennas: TX 0 RX 0
>      Supported interface modes:
>           * IBSS
>           * managed
>           * AP
>           * P2P-client
>           * P2P-GO
>           * P2P-device
>      Band 1:
>          Capabilities: 0x1062
>              HT20/HT40
>              Static SM Power Save
>              RX HT20 SGI
>              RX HT40 SGI
>              No RX STBC
>              Max AMSDU length: 3839 bytes
>              DSSS/CCK HT40
>          Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
>          Minimum RX AMPDU time spacing: 16 usec (0x07)
>          HT TX/RX MCS rate indexes supported: 0-7
>          Bitrates (non-HT):
>              * 1.0 Mbps
>              * 2.0 Mbps (short preamble supported)
>              * 5.5 Mbps (short preamble supported)
>              * 11.0 Mbps (short preamble supported)
>              * 6.0 Mbps
>              * 9.0 Mbps
>              * 12.0 Mbps
>              * 18.0 Mbps
>              * 24.0 Mbps
>              * 36.0 Mbps
>              * 48.0 Mbps
>              * 54.0 Mbps
>          Frequencies:
>              * 2412 MHz [1] (20.0 dBm)
>              * 2417 MHz [2] (20.0 dBm)
>              * 2422 MHz [3] (20.0 dBm)
>              * 2427 MHz [4] (20.0 dBm)
>              * 2432 MHz [5] (20.0 dBm)
>              * 2437 MHz [6] (20.0 dBm)
>              * 2442 MHz [7] (20.0 dBm)
>              * 2447 MHz [8] (20.0 dBm)
>              * 2452 MHz [9] (20.0 dBm)
>              * 2457 MHz [10] (20.0 dBm)
>              * 2462 MHz [11] (20.0 dBm)
>              * 2467 MHz [12] (20.0 dBm)
>              * 2472 MHz [13] (20.0 dBm)
>              * 2484 MHz [14] (disabled)
>      Band 2:
>          Capabilities: 0x1062
>              HT20/HT40
>              Static SM Power Save
>              RX HT20 SGI
>              RX HT40 SGI
>              No RX STBC
>              Max AMSDU length: 3839 bytes
>              DSSS/CCK HT40
>          Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
>          Minimum RX AMPDU time spacing: 16 usec (0x07)
>          HT TX/RX MCS rate indexes supported: 0-7
>          VHT Capabilities (0x00001020):
>              Max MPDU length: 3895
>              Supported Channel Width: neither 160 nor 80+80
>              short GI (80 MHz)
>              SU Beamformee
>          VHT RX MCS set:
>              1 streams: MCS 0-9
>              2 streams: not supported
>              3 streams: not supported
>              4 streams: not supported
>              5 streams: not supported
>              6 streams: not supported
>              7 streams: not supported
>              8 streams: not supported
>          VHT RX highest supported: 0 Mbps
>          VHT TX MCS set:
>              1 streams: MCS 0-9
>              2 streams: not supported
>              3 streams: not supported
>              4 streams: not supported
>              5 streams: not supported
>              6 streams: not supported
>              7 streams: not supported
>              8 streams: not supported
>          VHT TX highest supported: 0 Mbps
>          Bitrates (non-HT):
>              * 6.0 Mbps
>              * 9.0 Mbps
>              * 12.0 Mbps
>              * 18.0 Mbps
>              * 24.0 Mbps
>              * 36.0 Mbps
>              * 48.0 Mbps
>              * 54.0 Mbps
>          Frequencies:
>              * 5170 MHz [34] (disabled)
>              * 5180 MHz [36] (20.0 dBm)
>              * 5190 MHz [38] (disabled)
>              * 5200 MHz [40] (20.0 dBm)
>              * 5210 MHz [42] (disabled)
>              * 5220 MHz [44] (20.0 dBm)
>              * 5230 MHz [46] (disabled)
>              * 5240 MHz [48] (20.0 dBm)
>              * 5260 MHz [52] (20.0 dBm) (no IR, radar detection)
>              * 5280 MHz [56] (20.0 dBm) (no IR, radar detection)
>              * 5300 MHz [60] (20.0 dBm) (no IR, radar detection)
>              * 5320 MHz [64] (20.0 dBm) (no IR, radar detection)
>              * 5500 MHz [100] (20.0 dBm) (no IR, radar detection)
>              * 5520 MHz [104] (20.0 dBm) (no IR, radar detection)
>              * 5540 MHz [108] (20.0 dBm) (no IR, radar detection)
>              * 5560 MHz [112] (20.0 dBm) (no IR, radar detection)
>              * 5580 MHz [116] (20.0 dBm) (no IR, radar detection)
>              * 5600 MHz [120] (20.0 dBm) (no IR, radar detection)
>              * 5620 MHz [124] (20.0 dBm) (no IR, radar detection)
>              * 5640 MHz [128] (20.0 dBm) (no IR, radar detection)
>              * 5660 MHz [132] (20.0 dBm) (no IR, radar detection)
>              * 5680 MHz [136] (20.0 dBm) (no IR, radar detection)
>              * 5700 MHz [140] (20.0 dBm) (no IR, radar detection)
>              * 5720 MHz [144] (disabled)
>              * 5745 MHz [149] (disabled)
>              * 5765 MHz [153] (disabled)
>              * 5785 MHz [157] (disabled)
>              * 5805 MHz [161] (disabled)
>              * 5825 MHz [165] (disabled)
>      Supported commands:
>           * new_interface
>           * set_interface
>           * new_key
>           * start_ap
>           * join_ibss
>           * set_pmksa
>           * del_pmksa
>           * flush_pmksa
>           * remain_on_channel
>           * frame
>           * set_wiphy_netns
>           * set_channel
>           * tdls_oper
>           * start_sched_scan
>           * start_p2p_device
>           * connect
>           * disconnect
>           * crit_protocol_start
>           * crit_protocol_stop
>           * update_connect_params
>      software interface modes (can always be added):
>      valid interface combinations:
>           * #{ managed } <= 2, #{ P2P-device } <= 1, #{ P2P-client, 
> P2P-GO } <= 1,
>             total <= 3, #channels <= 2
>           * #{ managed } <= 1, #{ AP } <= 1, #{ P2P-client } <= 1, #{ 
> P2P-device } <= 1,
>             total <= 4, #channels <= 1
>      Device supports scan flush.
>      Device supports randomizing MAC-addr in sched scans.
>      max # scan plans: 1
>      max scan plan interval: 508
>      max scan plan iterations: 0
>      Supported TX frame types:
>           * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 
> 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
>           * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 
> 0xb0 0xc0 0xd0 0xe0 0xf0
>           * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 
> 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
>           * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 
> 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
>           * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 
> 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
>      Supported RX frame types:
>           * managed: 0x40 0xd0
>           * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
>           * P2P-client: 0x40 0xd0
>           * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
>           * P2P-device: 0x40 0xd0
>      Supported extended features:
>          * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
>          * [ 4WAY_HANDSHAKE_STA_PSK ]: 4-way handshake with PSK in 
> station mode
>          * [ 4WAY_HANDSHAKE_STA_1X ]: 4-way handshake with 802.1X in 
> station mode
>          * [ DFS_OFFLOAD ]: DFS offload
> 

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