[PATCH v2] wifi: ath11k: support DBS and DFS compatibility

[Yu Zhang (Yuriy)]

On 11/26/2024 2:09 PM, Mihai Moldovan wrote:
> * On 11/25/24 11:05, Yu Zhang(Yuriy) wrote:
>> Add a ieee80211_iface_combination to support DBS and DFS compatibility,
>> one combination can support DFS(same with non dual sta), another
>> combination can support DBS. When running different scenarios that will
>> use different ieee80211_iface_combination due to mac80211 will go through
>> all of possible interface combinations.
> 
> Are DFS and DBS mutually exclusive features? I can imagine that ISM 
> clashes with DBS, but wonder if this is a hardware limitation, a 
> firmware limitation or merely an implementation limitation so far that 
> might eventually be lifted.
> 
You mean when run dfs channel why only support one interface, right? 
Your can refer to wiphy_verify_combinations().
> 
>> The chips affected are:
>>
>>   QCA6390 hw2.0
> 
> Tested-by: Mihai Moldovan <ionic at ionic.de>
> Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-05266-QCAHSTSWPLZ_V2_TO_X86-1
> 
Thanks your tested-on QCA6390. I will update with adding this.
> 
> These were the tested configurations:
> 
>    - 5 GHz on DFS channel:
> 
>          Interface wifiax
>                  ifindex 6
>                  wdev 0x1
>                  addr 20:57:9e:2d:04:1e
>                  ssid WRTKA05
>                  type AP
>                  channel 100 (5500 MHz), width: 80 MHz, center1: 5530 MHz
>                  txpower 20.00 dBm
>                  multicast TXQ:
>                          qsz-byt qsz-pkt flows   drops   marks   overlmt 
> hashcol tx-bytes        tx-packets
>                          0       0       454     0       0       0       
> 0 61456           454
> 
>    - 5 GHz on non-DFS channel + 2.4 GHz (DBS):
> 
>          Interface wifiax24
>                  ifindex 7
>                  wdev 0x2
>                  addr 22:57:9e:2d:04:1e
>                  ssid WRTKA06-Tasmota
>                  type AP
>                  channel 7 (2442 MHz), width: 40 MHz, center1: 2452 MHz
>                  txpower 20.00 dBm
>                  multicast TXQ:
>                          qsz-byt qsz-pkt flows   drops   marks   overlmt 
> hashcol tx-bytes        tx-packets
>                          0       0       61      0       0       0       
> 0 8562            61
>          Interface wifiax
>                  ifindex 6
>                  wdev 0x1
>                  addr 20:57:9e:2d:04:1e
>                  ssid WRTKA05
>                  type AP
>                  channel 40 (5200 MHz), width: 80 MHz, center1: 5210 MHz
>                  txpower 20.00 dBm
>                  multicast TXQ:
>                          qsz-byt qsz-pkt flows   drops   marks   overlmt 
> hashcol tx-bytes        tx-packets
>                          0       0       69      0       0       0       
> 0 10032           69
> 
> 
> 
> Mihai