[PATCH v2] wifi: ath10k: add support to allow broadcast action frame RX

[Jeff Johnson]

On 11/16/2023 9:32 AM, James Prestwood wrote:
> Broadcast action frames are needed for the Device Provisioning
> Protocol (DPP) for Presence and PKEX Exchange requests. Currently
> just ath9k has this capability so this is being enabled for
> ath10k (for at least one hardware variant).
> 
> Add a new capability flag in ath10k_hw_params to indicate support
> for receiving multicast action frames. This bit is then checked
> when configuring the RX filter and (if set) multicast action frame
> registration is enabled.
> 
> Until more hardware can be tested only the "qca6174 hw3.2" variant
> is enabling this feature.
> 
> Note: I went ahead and removed the 'changed_flags' mask operation
> since it had no effect, that parameter was not being used anywhere.
> 
> Tested-on: QCA6174 hw3.2 WLAN.RM.4.4.1-00288-
> 
> Signed-off-by: James Prestwood <prestwoj at gmail.com>
> ---
>  drivers/net/wireless/ath/ath10k/core.c |  1 +
>  drivers/net/wireless/ath/ath10k/hw.h   |  3 +++
>  drivers/net/wireless/ath/ath10k/mac.c  | 14 +++++++++++---
>  3 files changed, 15 insertions(+), 3 deletions(-)
> 
> v2:
>  * Add flag in ath10k_hw_params and only set FIF_MCAST_ACTION
>    if that hardware allows it.
> 
> diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
> index 5eb131ab916f..f2077756ffdf 100644
> --- a/drivers/net/wireless/ath/ath10k/core.c
> +++ b/drivers/net/wireless/ath/ath10k/core.c
> @@ -381,6 +381,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = {
>  		.hw_restart_disconnect = false,
>  		.use_fw_tx_credits = true,
>  		.delay_unmap_buffer = false,
> +		.mcast_frame_registration = true,
>  	},
>  	{
>  		.id = QCA99X0_HW_2_0_DEV_VERSION,
> diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h
> index 9643031a4427..2aeb52c7f189 100644
> --- a/drivers/net/wireless/ath/ath10k/hw.h
> +++ b/drivers/net/wireless/ath/ath10k/hw.h
> @@ -639,6 +639,9 @@ struct ath10k_hw_params {
>  	bool use_fw_tx_credits;
>  
>  	bool delay_unmap_buffer;
> +
> +	/* The hardware support multicast frame registrations */
> +	bool mcast_frame_registration;
>  };
>  
>  struct htt_resp;
> diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
> index ec8d5b29bc72..0d0de3646d31 100644
> --- a/drivers/net/wireless/ath/ath10k/mac.c
> +++ b/drivers/net/wireless/ath/ath10k/mac.c
> @@ -1249,7 +1249,7 @@ static bool ath10k_mac_monitor_vdev_is_needed(struct ath10k *ar)
>  	return ar->monitor ||
>  	       (!test_bit(ATH10K_FW_FEATURE_ALLOWS_MESH_BCAST,
>  			  ar->running_fw->fw_file.fw_features) &&
> -		(ar->filter_flags & FIF_OTHER_BSS)) ||
> +		(ar->filter_flags & (FIF_OTHER_BSS | FIF_MCAST_ACTION))) ||
>  	       test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
>  }
>  
> @@ -6027,11 +6027,15 @@ static void ath10k_configure_filter(struct ieee80211_hw *hw,
>  {
>  	struct ath10k *ar = hw->priv;
>  	int ret;
> +	unsigned int supported = SUPPORTED_FILTERS;
>  
>  	mutex_lock(&ar->conf_mutex);
>  
> -	changed_flags &= SUPPORTED_FILTERS;
> -	*total_flags &= SUPPORTED_FILTERS;
> +	if (ar->hw_params.mcast_frame_registration)
> +		supported |= FIF_MCAST_ACTION;
> +
> +	*total_flags &= supported;
> +
>  	ar->filter_flags = *total_flags;
>  
>  	ret = ath10k_monitor_recalc(ar);
> @@ -10114,6 +10118,10 @@ int ath10k_mac_register(struct ath10k *ar)
>  			      NL80211_EXT_FEATURE_SET_SCAN_DWELL);
>  	wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_AQL);
>  
> +	if (ar->hw_params.mcast_frame_registration)
> +		wiphy_ext_feature_set(ar->hw->wiphy,
> +				      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
> +
>  	if (test_bit(WMI_SERVICE_TX_DATA_ACK_RSSI, ar->wmi.svc_map) ||
>  	    test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS, ar->wmi.svc_map))
>  		wiphy_ext_feature_set(ar->hw->wiphy,

Actually add the ath10k list this time.  Sigh.