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From:   gregory.greenman@intel.com
To:     johannes@sipsolutions.net
Cc:     linux-wireless@vger.kernel.org,
        Avraham Stern <avraham.stern@intel.com>,
        Gregory Greenman <gregory.greenman@intel.com>
Subject: [PATCH 09/14] wifi: iwlwifi: mvm: FTM initiator MLO support
Date:   Wed, 31 May 2023 19:50:01 +0300
Message-Id: <20230531194629.a0d86655e7d2.I8f140ca55094da1d73c387fc036394fb2c148c85@changeid>
In-Reply-To: <20230531165006.273284-1-gregory.greenman@intel.com>
References: <20230531165006.273284-1-gregory.greenman@intel.com>
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From: Avraham Stern <avraham.stern@intel.com>

When checking if the initiator is associated to the responder,
iterate over all active links.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
---
 .../intel/iwlwifi/mvm/ftm-initiator.c         | 45 +++++++++++++------
 1 file changed, 32 insertions(+), 13 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c b/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
index 3963a0d4ed04..233ae81884a0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
@@ -72,15 +72,24 @@ int iwl_mvm_ftm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	 * the TK is already configured for this station, so it
 	 * shouldn't be set again here.
 	 */
-	if (vif->cfg.assoc &&
-	    !memcmp(addr, vif->bss_conf.bssid, ETH_ALEN)) {
+	if (vif->cfg.assoc) {
 		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+		struct ieee80211_bss_conf *link_conf;
+		unsigned int link_id;
 		struct ieee80211_sta *sta;
+		u8 sta_id;
 
 		rcu_read_lock();
-		sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id]);
-		if (!IS_ERR_OR_NULL(sta) && sta->mfp)
-			expected_tk_len = 0;
+		for_each_vif_active_link(vif, link_conf, link_id) {
+			if (memcmp(addr, link_conf->bssid, ETH_ALEN))
+				continue;
+
+			sta_id = mvmvif->link[link_id]->ap_sta_id;
+			sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
+			if (!IS_ERR_OR_NULL(sta) && sta->mfp)
+				expected_tk_len = 0;
+			break;
+		}
 		rcu_read_unlock();
 	}
 
@@ -518,20 +527,30 @@ iwl_mvm_ftm_put_target(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 
 	iwl_mvm_ftm_put_target_common(mvm, peer, target);
 
-	if (vif->cfg.assoc &&
-	    !memcmp(peer->addr, vif->bss_conf.bssid, ETH_ALEN)) {
+	if (vif->cfg.assoc) {
 		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 		struct ieee80211_sta *sta;
+		struct ieee80211_bss_conf *link_conf;
+		unsigned int link_id;
 
 		rcu_read_lock();
+		for_each_vif_active_link(vif, link_conf, link_id) {
+			if (memcmp(peer->addr, link_conf->bssid, ETH_ALEN))
+				continue;
+
+			target->sta_id = mvmvif->link[link_id]->ap_sta_id;
+			sta = rcu_dereference(mvm->fw_id_to_mac_id[target->sta_id]);
+			if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
+				rcu_read_unlock();
+				return PTR_ERR_OR_ZERO(sta);
+			}
 
-		sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->deflink.ap_sta_id]);
-		if (sta->mfp && (peer->ftm.trigger_based || peer->ftm.non_trigger_based))
-			FTM_PUT_FLAG(PMF);
-
+			if (sta->mfp && (peer->ftm.trigger_based ||
+					 peer->ftm.non_trigger_based))
+				FTM_PUT_FLAG(PMF);
+			break;
+		}
 		rcu_read_unlock();
-
-		target->sta_id = mvmvif->deflink.ap_sta_id;
 	} else {
 		target->sta_id = IWL_MVM_INVALID_STA;
 	}
-- 
2.38.1