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From: Miri Korenblit <miriam.rachel.korenblit@intel.com>
To: johannes@sipsolutions.net
Cc: linux-wireless@vger.kernel.org,
	Johannes Berg <johannes.berg@intel.com>
Subject: [PATCH 1/5] wifi: iwlwifi: mvm: separate non-BSS/ROC EMLSR blocking
Date: Wed,  5 Jun 2024 14:07:36 +0300
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From: Johannes Berg <johannes.berg@intel.com>

If non-BSS and remain-on-channel (ROC) blocking were to occur
simultaneously, they'd step on each other's toes, unblocking
when not yet supported. Disentangle these bits, and ROC doesn't
need to use the non_bss_link() function then.

Fixes: a1efeb823084 ("wifi: iwlwifi: mvm: Block EMLSR when a p2p/softAP vif is active")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c   | 10 +++++++---
 drivers/net/wireless/intel/iwlwifi/mvm/mvm.h        |  5 ++++-
 drivers/net/wireless/intel/iwlwifi/mvm/time-event.c |  5 +++--
 3 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index a2a0409672c3..d2b97e30d9eb 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -4787,6 +4787,7 @@ int iwl_mvm_roc_common(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 		       const struct iwl_mvm_roc_ops *ops)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+	struct ieee80211_vif *bss_vif = iwl_mvm_get_bss_vif(mvm);
 	u32 lmac_id;
 	int ret;
 
@@ -4799,9 +4800,12 @@ int iwl_mvm_roc_common(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	 */
 	flush_work(&mvm->roc_done_wk);
 
-	ret = iwl_mvm_esr_non_bss_link(mvm, vif, 0, true);
-	if (ret)
-		return ret;
+	if (!IS_ERR_OR_NULL(bss_vif)) {
+		ret = iwl_mvm_block_esr_sync(mvm, bss_vif,
+					     IWL_MVM_ESR_BLOCKED_ROC);
+		if (ret)
+			return ret;
+	}
 
 	guard(mvm)(mvm);
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 82080d920d59..cb227dca4f87 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -361,7 +361,9 @@ struct iwl_mvm_vif_link_info {
  * @IWL_MVM_ESR_BLOCKED_WOWLAN: WOWLAN is preventing the enablement of EMLSR
  * @IWL_MVM_ESR_BLOCKED_TPT: block EMLSR when there is not enough traffic
  * @IWL_MVM_ESR_BLOCKED_FW: FW didn't recommended/forced exit from EMLSR
- * @IWL_MVM_ESR_BLOCKED_NON_BSS: An active non-bssid link's preventing EMLSR
+ * @IWL_MVM_ESR_BLOCKED_NON_BSS: An active non-BSS interface's link is
+ *	preventing EMLSR
+ * @IWL_MVM_ESR_BLOCKED_ROC: remain-on-channel is preventing EMLSR
  * @IWL_MVM_ESR_EXIT_MISSED_BEACON: exited EMLSR due to missed beacons
  * @IWL_MVM_ESR_EXIT_LOW_RSSI: link is deactivated/not allowed for EMLSR
  *	due to low RSSI.
@@ -378,6 +380,7 @@ enum iwl_mvm_esr_state {
 	IWL_MVM_ESR_BLOCKED_TPT		= 0x4,
 	IWL_MVM_ESR_BLOCKED_FW		= 0x8,
 	IWL_MVM_ESR_BLOCKED_NON_BSS	= 0x10,
+	IWL_MVM_ESR_BLOCKED_ROC		= 0x20,
 	IWL_MVM_ESR_EXIT_MISSED_BEACON	= 0x10000,
 	IWL_MVM_ESR_EXIT_LOW_RSSI	= 0x20000,
 	IWL_MVM_ESR_EXIT_COEX		= 0x40000,
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
index 31bc80cdcb7d..c0322349bfcd 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
@@ -47,6 +47,7 @@ void iwl_mvm_te_clear_data(struct iwl_mvm *mvm,
 
 static void iwl_mvm_cleanup_roc(struct iwl_mvm *mvm)
 {
+	struct ieee80211_vif *bss_vif = iwl_mvm_get_bss_vif(mvm);
 	struct ieee80211_vif *vif = mvm->p2p_device_vif;
 
 	lockdep_assert_held(&mvm->mutex);
@@ -119,9 +120,9 @@ static void iwl_mvm_cleanup_roc(struct iwl_mvm *mvm)
 			iwl_mvm_rm_aux_sta(mvm);
 	}
 
+	if (vif && !IS_ERR_OR_NULL(bss_vif))
+		iwl_mvm_unblock_esr(mvm, bss_vif, IWL_MVM_ESR_BLOCKED_ROC);
 	mutex_unlock(&mvm->mutex);
-	if (vif)
-		iwl_mvm_esr_non_bss_link(mvm, vif, 0, false);
 }
 
 void iwl_mvm_roc_done_wk(struct work_struct *wk)
-- 
2.34.1