Other updates on STA+AP mode with rtw_8822cu

[zhefeng xu <zhefeng_xu@xxxxxxxxxxx>]

Hi,

Recently I found I could connect the AP from android cellphone or iphone, but never succeeded connecting from windows 10, ubuntu or ipad. Not sure if it's the driver issue or hostapd incompatibility.

phy#0
        Interface x0wlan0
                ifindex 43
                wdev 0x2
                addr 00:0e:8e:b3:fd:f5
                ssid ap_test_j
                type AP
                channel 40 (5200 MHz), width: 20 MHz, center1: 5200 MHz
                txpower 23.00 dBm
                multicast TXQ:
                        qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes        tx-packets
                        0       0       11      0       0       0       3       21340           183
        Interface wlan0
                ifindex 42
                wdev 0x1
                addr 00:0e:8e:b3:fd:eb
                ssid CIK-Mesh-2154-5G
                type managed
                channel 40 (5200 MHz), width: 80 MHz, center1: 5210 MHz
                txpower 23.00 dBm
                multicast TXQ:
                        qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes        tx-packets
                        0       0       0       0       0       0       0       0               0

STA+AP can be set up using linux-router script. AP can access internet through managed wlan0 connection. I can watch youtube from the cellphone. After a while, it's possible driver printing error information but the old connection to AP is still alive and able to access internet. And the connection can last for very long time.

The log could be like:

[  +0.005236] rtw_8822cu 3-1:1.2: failed to download drv rsvd page
[  +3.040394] rtw_8822cu 3-1:1.2: error beacon valid
[  +0.005233] rtw_8822cu 3-1:1.2: failed to download drv rsvd page
[  +0.184770] rtw_8822cu 3-1:1.2: error beacon valid
[  +0.005342] rtw_8822cu 3-1:1.2: failed to download drv rsvd page
[  +1.831908] rtw_8822cu 3-1:1.2: error beacon valid
[  +0.005334] rtw_8822cu 3-1:1.2: failed to download drv rsvd page
[  +0.270540] rtw_8822cu 3-1:1.2: error beacon valid
[  +0.005334] rtw_8822cu 3-1:1.2: failed to download drv rsvd page
[  +1.748539] rtw_8822cu 3-1:1.2: error beacon valid
[  +0.005094] rtw_8822cu 3-1:1.2: failed to download drv rsvd page
[  +0.283437] rtw_8822cu 3-1:1.2: error beacon valid
[  +0.005743] rtw_8822cu 3-1:1.2: failed to download drv rsvd page

ssid advertisement could disappear (sometimes ssid still can be seen from other devices for a while until more severe exception messages printed out).

I can look into hostapd's code to see if there's something special there (the tool might work better with intel's adapters), and I saw there were people making up patches for hostapd to make it work better with realtek adapters (not for rtw_8822cu). 

Any help is much appreciated.

Thanks

Zhefeng