wifi: iwlwifi: w/a FW SMPS mode selection

[ Upstream commit b2e709805ce955f80803b7cab3421813c79e1df4 ]

The FW is now responsible of determining the SMPS mode.
If the user disabled power save in a certain vif, we send the vif-level
power command to clear out the POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK bit
for that vif.
But erroneously, the FW checks DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK in
the device-level command to determine the SMPS mode.

To W/A this, send also the device-level command when the power save of a
vif changes, and disable power save if there is any vif that has power
save disabled.

Signed-off-by: Daniel Gabay <daniel.gabay@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250308231427.7bf205efa027.I2c793ff1fc2a6779a95faaee1ded348100fd97f1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

@@ -4096,6 +4096,20 @@ iwl_mvm_sta_state_authorized_to_assoc(struct iwl_mvm *mvm,
 	return 0;
 }
 
+void iwl_mvm_smps_workaround(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+			     bool update)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	if (!iwl_mvm_has_rlc_offload(mvm))
+		return;
+
+	mvmvif->ps_disabled = !vif->cfg.ps;
+
+	if (update)
+		iwl_mvm_power_update_mac(mvm);
+}
+
 /* Common part for MLD and non-MLD modes */
 int iwl_mvm_mac_sta_state_common(struct ieee80211_hw *hw,
 				 struct ieee80211_vif *vif,
@@ -4188,6 +4202,7 @@ int iwl_mvm_mac_sta_state_common(struct ieee80211_hw *hw,
 		   new_state == IEEE80211_STA_AUTHORIZED) {
 		ret = iwl_mvm_sta_state_assoc_to_authorized(mvm, vif, sta,
 							    callbacks);
+		iwl_mvm_smps_workaround(mvm, vif, true);
 	} else if (old_state == IEEE80211_STA_AUTHORIZED &&
 		   new_state == IEEE80211_STA_ASSOC) {
 		ret = iwl_mvm_sta_state_authorized_to_assoc(mvm, vif, sta,

drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2022-2024 Intel Corporation
+ * Copyright (C) 2022-2025 Intel Corporation
  */
 #include "mvm.h"
 
@@ -961,6 +961,7 @@ static void iwl_mvm_mld_vif_cfg_changed_station(struct iwl_mvm *mvm,
 	}
 
 	if (changes & BSS_CHANGED_PS) {
+		iwl_mvm_smps_workaround(mvm, vif, false);
 		ret = iwl_mvm_power_update_mac(mvm);
 		if (ret)
 			IWL_ERR(mvm, "failed to update power mode\n");

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

@@ -3042,4 +3042,7 @@ iwl_mvm_send_ap_tx_power_constraint_cmd(struct iwl_mvm *mvm,
 					struct ieee80211_vif *vif,
 					struct ieee80211_bss_conf *bss_conf,
 					bool is_ap);
+
+void iwl_mvm_smps_workaround(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+			     bool update);
 #endif /* __IWL_MVM_H__ */