wifi: mac80211: inform the low level if drv_stop() is a suspend

This will allow the low level driver to take different actions for
different flows.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240618192529.739036208b6e.Ie18a2fe8e02bf2717549d39420b350cfdaf3d317@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

7 files changed, 23 insertions, 14 deletions

diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
index dce37ba8ebe3..bef43990f07a 100644
--- a/net/mac80211/driver-ops.c
+++ b/net/mac80211/driver-ops.c
@@ -33,7 +33,7 @@ int drv_start(struct ieee80211_local *local)
 	return ret;
 }
 
-void drv_stop(struct ieee80211_local *local)
+void drv_stop(struct ieee80211_local *local, bool suspend)
 {
 	might_sleep();
 	lockdep_assert_wiphy(local->hw.wiphy);
@@ -41,8 +41,8 @@ void drv_stop(struct ieee80211_local *local)
 	if (WARN_ON(!local->started))
 		return;
 
-	trace_drv_stop(local);
-	local->ops->stop(&local->hw);
+	trace_drv_stop(local, suspend);
+	local->ops->stop(&local->hw, suspend);
 	trace_drv_return_void(local);
 
 	/* sync away all work on the tasklet before clearing started */
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index d4e73d3630e0..d382d9729e85 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -88,7 +88,7 @@ static inline int drv_get_et_sset_count(struct ieee80211_sub_if_data *sdata,
 }
 
 int drv_start(struct ieee80211_local *local);
-void drv_stop(struct ieee80211_local *local);
+void drv_stop(struct ieee80211_local *local, bool suspend);
 
 #ifdef CONFIG_PM
 static inline int drv_suspend(struct ieee80211_local *local,
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 501f02809135..6349552e62a8 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -2246,7 +2246,7 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
 
 /* Suspend/resume and hw reconfiguration */
 int ieee80211_reconfig(struct ieee80211_local *local);
-void ieee80211_stop_device(struct ieee80211_local *local);
+void ieee80211_stop_device(struct ieee80211_local *local, bool suspend);
 
 int __ieee80211_suspend(struct ieee80211_hw *hw,
 			struct cfg80211_wowlan *wowlan);
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index f06e165d6c7a..64106097949a 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -698,7 +698,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do
 		wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work);
 
 	if (local->open_count == 0) {
-		ieee80211_stop_device(local);
+		ieee80211_stop_device(local, false);
 
 		/* no reconfiguring after stop! */
 		return;
@@ -1435,7 +1435,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 	drv_remove_interface(local, sdata);
  err_stop:
 	if (!local->open_count)
-		drv_stop(local);
+		drv_stop(local, false);
  err_del_bss:
 	sdata->bss = NULL;
 	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index c1fa26e09479..d823d58303e8 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Portions
- * Copyright (C) 2020-2021, 2023 Intel Corporation
+ * Copyright (C) 2020-2021, 2023-2024 Intel Corporation
  */
 #include <net/mac80211.h>
 #include <net/rtnetlink.h>
@@ -171,7 +171,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 	WARN_ON(!list_empty(&local->chanctx_list));
 
 	/* stop hardware - this must stop RX */
-	ieee80211_stop_device(local);
+	ieee80211_stop_device(local, true);
 
  suspend:
 	local->suspended = true;
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index b26aacfbc622..dc498cd8cd91 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -328,9 +328,18 @@ TRACE_EVENT(drv_set_wakeup,
 	TP_printk(LOCAL_PR_FMT " enabled:%d", LOCAL_PR_ARG, __entry->enabled)
 );
 
-DEFINE_EVENT(local_only_evt, drv_stop,
-	TP_PROTO(struct ieee80211_local *local),
-	TP_ARGS(local)
+TRACE_EVENT(drv_stop,
+	TP_PROTO(struct ieee80211_local *local, bool suspend),
+	TP_ARGS(local, suspend),
+	TP_STRUCT__entry(
+		LOCAL_ENTRY
+		__field(bool, suspend)
+	),
+	TP_fast_assign(
+		LOCAL_ASSIGN;
+		__entry->suspend = suspend;
+	),
+	TP_printk(LOCAL_PR_FMT " suspend:%d", LOCAL_PR_ARG, __entry->suspend)
 );
 
 DEFINE_EVENT(local_sdata_addr_evt, drv_add_interface,
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index b3b8873a107b..610f0a94796c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1565,7 +1565,7 @@ u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
 	return supp_rates;
 }
 
-void ieee80211_stop_device(struct ieee80211_local *local)
+void ieee80211_stop_device(struct ieee80211_local *local, bool suspend)
 {
 	ieee80211_handle_queued_frames(local);
 
@@ -1576,7 +1576,7 @@ void ieee80211_stop_device(struct ieee80211_local *local)
 
 	flush_workqueue(local->workqueue);
 	wiphy_work_flush(local->hw.wiphy, NULL);
-	drv_stop(local);
+	drv_stop(local, suspend);
 }
 
 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,