wifi: iwlwifi: mvm: add debugfs for forcing unprotected ranging request

Add an option to force sending unprotected ranging request even if the
station is associated to the responder or a PASN keys are configured.
This is used for testing.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240319100755.8523150148ec.I7ab6c547513717e69ec385f72a8f43ea00bd9e0a@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c

@@ -793,6 +793,8 @@ void iwl_mvm_vif_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
 	MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
 	MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
+	debugfs_create_bool("ftm_unprotected", 0200, mvmvif->dbgfs_dir,
+			    &mvmvif->ftm_unprotected);
 	MVM_DEBUGFS_ADD_FILE_VIF(int_mlo_scan, mvmvif->dbgfs_dir, 0200);
 
 	if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&

drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c

 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
  * Copyright (C) 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2023 Intel Corporation
+ * Copyright (C) 2018-2024 Intel Corporation
  */
 #include <linux/etherdevice.h>
 #include <linux/math64.h>
@@ -551,6 +551,15 @@ iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 			break;
 		}
 		rcu_read_unlock();
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+		if (mvmvif->ftm_unprotected) {
+			target->sta_id = IWL_MVM_INVALID_STA;
+			target->initiator_ap_flags &=
+				~cpu_to_le32(IWL_INITIATOR_AP_FLAGS_PMF);
+		}
+
+#endif
 	} else {
 		target->sta_id = IWL_MVM_INVALID_STA;
 	}
@@ -713,6 +722,12 @@ iwl_mvm_ftm_set_secured_ranging(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 {
 	struct iwl_mvm_ftm_pasn_entry *entry;
 	u32 flags = le32_to_cpu(target->initiator_ap_flags);
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	if (mvmvif->ftm_unprotected)
+		return;
+#endif
 
 	if (!(flags & (IWL_INITIATOR_AP_FLAGS_NON_TB |
 		       IWL_INITIATOR_AP_FLAGS_TB)))

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

@@ -437,6 +437,7 @@ struct iwl_mvm_vif {
 	struct iwl_dbgfs_bf dbgfs_bf;
 	struct iwl_mac_power_cmd mac_pwr_cmd;
 	int dbgfs_quota_min;
+	bool ftm_unprotected;
 #endif
 
 	/* FW identified misbehaving AP */