[PATCH ath-next V14 0/9] wifi: ath12k: add MU-MIMO and 160 MHz bandwidth support

[Pradeep Kumar Chitrapu]

On 6/23/2025 8:03 AM, Jeff Johnson wrote:
> On 5/21/2025 3:45 PM, Pradeep Kumar Chitrapu wrote:
>>   Add support for
>> 1. enabling MU-MIMO in HE and EHT modes from hardware
>> 2. setting fixed HE rate/GI/LTF
>> 3. 160 MHz bandwidth in HE mode
>> 4. extended NSS bandwidth support
>>
>> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
>> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
>>
>> changes in v14:
>>   patch 6/9:
>>   - cap max_nss using ar->num_tx_chains to fix interop issue caused due
>>     to sending nss value 4 when firmware only supports nss value 2.
>>   patch 8/9:
>>   - Set the default return value to MODE_11AC_VHT160 for 160 MHz
>>     to allow STA to connect to the AP even if it does not
>>     explicitly indicate 160 MHz bandwidth support.
>>
>> changes in v13:
>>   - rebase
>>
>> changes in v12:
>>   - rebase
>>
>> changes in v11:
>>   patch 1/9:
>>    - fix return values in ath12k_mac_set_he_txbf_conf() and
>>      ath12k_mac_vif_recalc_sta_he_txbf()
>>   patch 6/9:
>>    - fix missing he_mcs initialization in ath12k_mac_init_arvif()
>>
>> changes in v10:
>>   patch 6/9:
>>    - use ath12k_ahsta_to_sta()
>>    - fix rcu_dereference warning in ath12k_mac_set_bitrate_mask_iter()
>>    - change return type for ath12k_mac_validate_fixed_rate_settings()
>>    - improve readability by adhering to nl80211 definitions of GI
>>      NL80211_TXRATE_DEFAULT_GI. Introduce ath12k_mac_nlgi_to_wmigi()
>>      for conversion.
>>   patch 7/9:
>>    - do not change default MODE_11AC_VHT160 in
>>      ath12k_mac_get_phymode_vht() as it breaks clients which do not
>>      set VHT_CAP_SUPP_CHAN_WIDTH_160MHZ.
>>   patch 8/9:
>>    - Use IEEE80211_VHT_CAP_EXT_NSS_BW_MASK along with
>>      IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ for determining VHT160
>>      phymode.
>>
>> changes in v9: rebase on top of master branch with mlo changes
>>   patch 1/9 and 2/9:
>>    - fetch link_conf using ath12k_mac_get_link_bss_conf()
>>      instead of arvif->vif->bss_conf before mlo
>>   patch 6/9
>>    - fetch mcs/nss values from sta->link[] instead of sta->deflink
>>    - fix spelling of 'incompatibility'
>>   patch 8/9
>>    - replace sta->deflink.addr with arsta->addr in
>>      ath12k_peer_assoc_h_vht
>>   patch 9/9
>>    - replace sta->deflink.rx_nss with link_sta->rx_nss
>>
>> changes in v8:
>>   - rebase and resolve KASAN warnings reported by Jeff in v7, in patch 6/9.
>>
>> Pradeep Kumar Chitrapu (9):
>>    wifi: ath12k: push HE MU-MIMO params to hardware
>>    wifi: ath12k: push EHT MU-MIMO params to hardware
>>    wifi: ath12k: move HE MCS mapper to a separate function
>>    wifi: ath12k: generate rx and tx mcs maps for supported HE mcs
>>    wifi: ath12k: fix TX and RX MCS rate configurations in HE mode
>>    wifi: ath12k: add support for setting fixed HE rate/GI/LTF
>>    wifi: ath12k: clean up 80P80 support
>>    wifi: ath12k: add support for 160 MHz bandwidth
>>    wifi: ath12k: add extended NSS bandwidth support for 160 MHz
>>
>>   drivers/net/wireless/ath/ath12k/core.h |    2 +
>>   drivers/net/wireless/ath/ath12k/mac.c  | 1144 ++++++++++++++++++++----
>>   drivers/net/wireless/ath/ath12k/mac.h  |   17 +
>>   drivers/net/wireless/ath/ath12k/wmi.c  |   13 +-
>>   drivers/net/wireless/ath/ath12k/wmi.h  |  107 ++-
>>   5 files changed, 1061 insertions(+), 222 deletions(-)
>>
>>
>> base-commit: 0d777aa2ca77584b339ce195db86fe0ee7dda5d5
> 
> This series no longer applies cleanly on ath/main, please rebase
> 
> Applying: wifi: ath12k: push HE MU-MIMO params to hardware
> Using index info to reconstruct a base tree...
> M       drivers/net/wireless/ath/ath12k/mac.c
> M       drivers/net/wireless/ath/ath12k/mac.h
> M       drivers/net/wireless/ath/ath12k/wmi.h
> Falling back to patching base and 3-way merge...
> Auto-merging drivers/net/wireless/ath/ath12k/wmi.h
> Auto-merging drivers/net/wireless/ath/ath12k/mac.h
> Auto-merging drivers/net/wireless/ath/ath12k/mac.c
> Applying: wifi: ath12k: push EHT MU-MIMO params to hardware
> Applying: wifi: ath12k: move HE MCS mapper to a separate function
> Applying: wifi: ath12k: generate rx and tx mcs maps for supported HE mcs
> Applying: wifi: ath12k: fix TX and RX MCS rate configurations in HE mode
> Applying: wifi: ath12k: add support for setting fixed HE rate/GI/LTF
> Applying: wifi: ath12k: clean up 80P80 support
> Applying: wifi: ath12k: add support for 160 MHz bandwidth
> Using index info to reconstruct a base tree...
> M       drivers/net/wireless/ath/ath12k/core.h
> M       drivers/net/wireless/ath/ath12k/mac.c
> M       drivers/net/wireless/ath/ath12k/mac.h
> M       drivers/net/wireless/ath/ath12k/wmi.c
> M       drivers/net/wireless/ath/ath12k/wmi.h
> Falling back to patching base and 3-way merge...
> Auto-merging drivers/net/wireless/ath/ath12k/wmi.h
> CONFLICT (content): Merge conflict in drivers/net/wireless/ath/ath12k/wmi.h
> Auto-merging drivers/net/wireless/ath/ath12k/wmi.c
> Auto-merging drivers/net/wireless/ath/ath12k/mac.h
> Auto-merging drivers/net/wireless/ath/ath12k/mac.c
> Auto-merging drivers/net/wireless/ath/ath12k/core.h
> Recorded preimage for 'drivers/net/wireless/ath/ath12k/wmi.h'
> error: Failed to merge in the changes.
> Patch failed at 0008 wifi: ath12k: add support for 160 MHz bandwidth
> 
Thanks Jeff..i waiting for discussion on "[PATCH ath-next] wifi: ath11k: 
fix peer HE MCS assignment" to close as this is related here..will post 
next revision today