iwlwifi: mvm: add beamformer support

VHT Beamformer (BFER) will be used if the peer supports it
and there's a benefit to use it vs. STBC or SISO.
The driver now tells the FW whether BFER and/or STBC are
allowed but the FW will make the decision to use either
or stick to SISO on its own.
BFER is limited to a single remote peer. The driver takes
care of ensuring this to the FW and prioritizes with which
peer BFER will be used.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index cfd7bfcb3fc6..51e02e6ba0ac 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -401,10 +401,15 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
-        if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
+        if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 
+                if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_BEAMFORMER)
+                        hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
+                                IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
+        }
+
         hw->wiphy->hw_version = mvm->trans->hw_id;
 
         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)