rsi_91x: Failed to read status register on failed authentication

[Alexey.Brodkin@synopsys.com (Alexey Brodkin)]

Hi Amit,

I'm seeing quite a strange behavior of RedPine module.
It connects perfectly fine to one of access points but fails
to connect to another.

Moreover after that failure RSI driver starts to flood me with
messages saying:
--------------------->8--------------------
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
--------------------->8--------------------

Below you may find details of my 2 experiments.
Note I use vanilla Linux kernel v4.14.4

Any ideas what could be wrong?

-Alexey


1. Working scenario
======================================================
# cat /etc/wpa_supplicant.conf?
ctrl_interface=/var/run/wpa_supplicant
ap_scan=1

network={
? ssid="YYY"
? psk="zzz"
}

# iw wlan0 scan
BSS 80:19:34:1f:5e:50(on wlan0) -- associated
????????TSF: 248634601 usec (0d, 00:04:08)
????????freq: 2412
????????beacon interval: 100 TUs
????????capability: ESS Privacy ShortSlotTime (0x0411)
????????signal: -31.00 dBm
????????last seen: 0 ms ago
????????Information elements from Probe Response frame:
????????SSID: YYY
????????Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0?
????????DS Parameter set: channel 1
????????ERP: Barker_Preamble_Mode
????????Extended supported rates: 24.0 36.0 48.0 54.0?
????????RSN:?????* Version: 1
?????????????????* Group cipher: CCMP
?????????????????* Pairwise ciphers: CCMP
?????????????????* Authentication suites: PSK
?????????????????* Capabilities: 16-PTKSA-RC 1-GTKSA-RC (0x000c)
????????HT capabilities:
????????????????Capabilities: 0x1ec
????????????????????????HT20
????????????????????????SM Power Save disabled
????????????????????????RX HT20 SGI
????????????????????????RX HT40 SGI
????????????????????????TX STBC
????????????????????????RX STBC 1-stream
????????????????????????Max AMSDU length: 3839 bytes
????????????????????????No DSSS/CCK HT40
????????????????Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
????????????????Minimum RX AMPDU time spacing: 4 usec (0x05)
????????????????HT Max RX data rate: 300 Mbps
????????????????HT TX/RX MCS rate indexes supported: 0-15
????????HT operation:
?????????????????* primary channel: 1
?????????????????* secondary channel offset: no secondary
?????????????????* STA channel width: 20 MHz
?????????????????* RIFS: 0
?????????????????* HT protection: no
?????????????????* non-GF present: 1
?????????????????* OBSS non-GF present: 0
?????????????????* dual beacon: 0
?????????????????* dual CTS protection: 0
?????????????????* STBC beacon: 0
?????????????????* L-SIG TXOP Prot: 0
?????????????????* PCO active: 0
?????????????????* PCO phase: 0
????????Extended capabilities: Extended Channel Switching, 6
????????WMM:?????* Parameter version 1
?????????????????* BE: CW 15-1023, AIFSN 3
?????????????????* BK: CW 15-1023, AIFSN 7
?????????????????* VI: CW 7-15, AIFSN 2, TXOP 2976 usec
?????????????????* VO: CW 3-7, AIFSN 2, TXOP 1472 usec
????????WPS:?????* Version: 1.0
?????????????????* Wi-Fi Protected Setup State: 2 (Configured)
?????????????????* Response Type: 3 (AP)
?????????????????* UUID: 97b29264-d9a5-5551-88f9-62fbdacb7162
?????????????????* Manufacturer:??
?????????????????* Model:??
?????????????????* Model Number:??
?????????????????* Serial Number:??
?????????????????* Primary Device Type: 0-00000000-0
?????????????????* Device name:??
?????????????????* Config methods: Display, Keypad
?????????????????* Unknown TLV (0x1049, 6 bytes): 00 37 2a 00 01 20

# ifconfig wlan0 up
rsi_91x: ===> Interface UP <===
rsi_91x: rsi_disable_ps: Cannot accept disable PS in PS_NONE state
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

# wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
Successfully initialized wpa_supplicant
rfkill: Cannot open RFKILL control device
# wlan0: authenticate with 80:19:34:1f:5e:50
wlan0: send auth to 80:19:34:1f:5e:50 (try 1/3)
wlan0: authenticated
wlan0: associate with 80:19:34:1f:5e:50 (try 1/3)
wlan0: RX AssocResp from 80:19:34:1f:5e:50 (capab=0x411 status=0 aid=1)
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
wlan0: associated
rsi_91x: rsi_hal_key_config: Cipher 0xfac04 key_type: 1 key_len: 16
rsi_91x: rsi_mac80211_set_key: RSI set_key
rsi_91x: rsi_hal_key_config: Cipher 0xfac04 key_type: 2 key_len: 16
rsi_91x: rsi_mac80211_set_key: RSI set_key

# udhcpc -i wlan0
udhcpc: started, v1.27.2
udhcpc: sending discover
udhcpc: sending select for 10.42.1.137
udhcpc: lease of 10.42.1.137 obtained, lease time 3600
deleting routers
adding dns 10.42.1.1
# ifconfig?
lo????????Link encap:Local Loopback??
??????????inet addr:127.0.0.1??Mask:255.0.0.0
??????????inet6 addr: ::1/128 Scope:Host
??????????UP LOOPBACK RUNNING??MTU:65536??Metric:1
??????????RX packets:0 errors:0 dropped:0 overruns:0 frame:0
??????????TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
??????????collisions:0 txqueuelen:1000?
??????????RX bytes:0 (0.0 B)??TX bytes:0 (0.0 B)

wlan0?????Link encap:Ethernet??HWaddr 00:23:A7:65:9B:94??
??????????inet addr:10.42.1.137??Bcast:10.42.1.255??Mask:255.255.255.0
??????????inet6 addr: fe80::223:a7ff:fe65:9b94/64 Scope:Link
??????????UP BROADCAST RUNNING MULTICAST??MTU:1500??Metric:1
??????????RX packets:5 errors:0 dropped:0 overruns:0 frame:0
??????????TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
??????????collisions:0 txqueuelen:1000?
??????????RX bytes:1028 (1.0 KiB)??TX bytes:1738 (1.6 KiB)
======================================================

2. Failing scenario:
======================================================
# cat /etc/wpa_supplicant.conf?
ctrl_interface=/var/run/wpa_supplicant
ap_scan=1

network={
? ssid="XXX"
? psk="zzz"
}

# iw wlan0 scan
BSS 6c:3b:6b:7d:a1:46(on wlan0)
????????TSF: 251623213323 usec (2d, 21:53:43)
????????freq: 2427
????????beacon interval: 100 TUs
????????capability: ESS Privacy ShortSlotTime (0x0411)
????????signal: -65.00 dBm
????????last seen: 0 ms ago
????????Information elements from Probe Response frame:
????????SSID: XXX
????????Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0?
????????DS Parameter set: channel 4
????????ERP: <no flags>
????????HT capabilities:
????????????????Capabilities: 0x106e
????????????????????????HT20/HT40
????????????????????????SM Power Save disabled
????????????????????????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: No restriction (0x00)
????????????????HT RX MCS rate indexes supported: 0-15
????????????????HT TX MCS rate indexes are undefined
????????RSN:?????* Version: 1
?????????????????* Group cipher: CCMP
?????????????????* Pairwise ciphers: CCMP TKIP
?????????????????* Authentication suites: PSK
?????????????????* Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
????????Extended supported rates: 24.0 36.0 48.0 54.0?
????????HT operation:
?????????????????* primary channel: 4
?????????????????* secondary channel offset: above
?????????????????* STA channel width: any
?????????????????* RIFS: 0
?????????????????* HT protection: no
?????????????????* non-GF present: 0
?????????????????* OBSS non-GF present: 0
?????????????????* dual beacon: 0
?????????????????* dual CTS protection: 0
?????????????????* STBC beacon: 0
?????????????????* L-SIG TXOP Prot: 0
?????????????????* PCO active: 0
?????????????????* PCO phase: 0
????????WMM:?????* Parameter version 1
?????????????????* u-APSD
?????????????????* BE: CW 15-1023, AIFSN 3
?????????????????* BK: CW 15-1023, AIFSN 7
?????????????????* VI: CW 7-15, AIFSN 2, TXOP 3008 usec
?????????????????* VO: CW 3-7, AIFSN 2, TXOP 1504 usec

# ifconfig wlan0 up
rsi_91x: ===> Interface UP <===
rsi_91x: rsi_disable_ps: Cannot accept disable PS in PS_NONE state
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

# wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
Successfully initialized wpa_supplicant
rfkill: Cannot open RFKILL control device
# wlan0: authenticate with 6c:3b:6b:7d:a1:46
wlan0: send auth to 6c:3b:6b:7d:a1:46 (try 1/3)
wlan0: send auth to 6c:3b:6b:7d:a1:46 (try 2/3)
wlan0: send auth to 6c:3b:6b:7d:a1:46 (try 3/3)
rsi_91x: rsi_sdio_write_register_multiple: Synch Cmd53 write failed -16
rsi_91x: rsi_sdio_host_intf_write_pkt: Unable to write onto the card: -16
rsi_91x: rsi_send_mgmt_pkt: Failed to write the packet
wlan0: authentication with 6c:3b:6b:7d:a1:46 timed out
wlan0: authenticate with 6c:3b:6b:76:e0:ab
wlan0: send auth to 6c:3b:6b:76:e0:ab (try 1/3)
wlan0: send auth to 6c:3b:6b:76:e0:ab (try 2/3)
wlan0: send auth to 6c:3b:6b:76:e0:ab (try 3/3)
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
wlan0: authentication with 6c:3b:6b:76:e0:ab timed out
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
======================================================