Re: Honister broken WiFi communication


Rudolf J Streif
 

Hi JH,

On 1/18/22 5:45 PM, Jupiter wrote:
Hi Rudolf,

Thanks for your response and comments.

If you run ifconfig -a does your WiFi interface show up? If not there is an
issue with the driver. Use dmesg and filter for the driver. Often a driver
cannot load the firmware. What is your WiFi hardware?
Not that bad, the WiFi interfaces was fine, but it could not get dhcp
response and IP address so an automatic private IP address 169.254 was
assigned

mlan0 Link encap:Ethernet HWaddr D4:CA:6E:A4:E8:B4
inet addr:169.254.193.101 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:56 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:330 (330.0 B) TX bytes:16392 (16.0 KiB)
This would typically mean that you are actually connected to a wifi network but the interface did not receive a DHCP lease for the IP address. the 169.254. is local IPv4 IP address which the interface would typically get if the DHCP client times out.

I could see WiFi information well, it is not a major problem, but the
subtle issues are connman and wpa_supplicant did not set up the WiFi
driver correctly.

Connected to 34:08:04:12:b1:a2 (on mlan0)
SSID: JupiterIoT
freq: 2437
RX: 660 bytes (4 packets)
TX: 46622 bytes (129 packets)
signal: -57 dBm
rx bitrate: 1.0 MBit/s
tx bitrate: 72.2 MBit/s MCS 7 short GI

bss flags: short-slot-time
dtim period: 1
beacon int: 100
I don't think that this is a wpa_supplicant issue. However, you can use connmanctl to manually connect to a wifi network:

$ connmanctl
connmanctl> enable wifi
connmanctl> scan wifi
San completed for wifi
connmanctl> services
[service list follows]
connmanctl> agent on
Agent registered
connmanctl> connect wifi_xxxxxx
Agent RequestInput wifi_xxxxx
   Passphrase = [ Type=psk, Requirement=mandatory ]
Passphrase? ********
Connected wifi_xxxxxx
conmanctl> quit

If that works the wifi authentication is OK.

Did you install the regulatory database?
Did you mean to enable CONFIG_CFG80211_INTERNAL_REGDB? No, I did not
install it in the Zeus version either so I don't see that could be an
issue.
Only a wag on my side. Should be ok since the wifi driver is working.
What error messages are you seeing when attempting to connect to a WiFi
network? Did you look at the connman logs?
No error in connman, I don't think it is connman or wpa_supplicant
issue, my suspicion is something missing in Honister built image to
prevent connman and wpa_supplicant to set up the WiFi driver
correctly.

It is not the first time I have the WiFi setup trouble to get WiFi
169.254 address, when I upgraded from Thud to Zeus, I got the exactly
the same problem that WiFi was assigned by a 169.254 address, no dhcp
response, at time, I was totally convinced it was connman issue, I
spend several months to debug connman and wpa_supplicant without any
results, then after waiting several months to pull updated Zeus again,
that problem was disappeared miraculous, that is why I suspect the
same problem in oe-core and bitbake in Honister as well.
Well, ok then it looks like a dhcp issue. Did you attempt to set a static IP to test connectivity?

Eventually it could be a router issue. Maybe the router blocks unknown devices?

Are there anyone in oe-core and bitbake tested connman, wpa_supplicant
for the current Honister branch? I can help to test and to debug it if
more advanced people in oe-core, bitbake, kernel, WiFi driver mwifiex
can provide me more information.
Honestly, I don't think the issue is related to connman or wpa_supplicant at all but on the dhcp level.
Thank you.

Kind regards,

- jupiter
--
Rudolf J Streif
CEO/CTO ibeeto
+1.855.442.3386 x700

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