cfg80211/mac80211: DFS setup chandef for cac event

To report channel width correctly we have
to send correct channel parameters from
mac80211 when calling cfg80211_cac_event().

This is required in case of using channel width
higher than 20MHz and we have to set correct
dfs channel state after CAC (NL80211_DFS_AVAILABLE).

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

3 files changed, 6 insertions, 8 deletions

diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 6a6b1c8..31f541f 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -763,12 +763,12 @@ void cfg80211_radar_event(struct wiphy *wiphy,
 EXPORT_SYMBOL(cfg80211_radar_event);
 
 void cfg80211_cac_event(struct net_device *netdev,
+			const struct cfg80211_chan_def *chandef,
 			enum nl80211_radar_event event, gfp_t gfp)
 {
 	struct wireless_dev *wdev = netdev->ieee80211_ptr;
 	struct wiphy *wiphy = wdev->wiphy;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
-	struct cfg80211_chan_def chandef;
 	unsigned long timeout;
 
 	trace_cfg80211_cac_event(netdev, event);
@@ -779,14 +779,12 @@ void cfg80211_cac_event(struct net_device *netdev,
 	if (WARN_ON(!wdev->channel))
 		return;
 
-	cfg80211_chandef_create(&chandef, wdev->channel, NL80211_CHAN_NO_HT);
-
 	switch (event) {
 	case NL80211_RADAR_CAC_FINISHED:
 		timeout = wdev->cac_start_time +
 			  msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
 		WARN_ON(!time_after_eq(jiffies, timeout));
-		cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_AVAILABLE);
+		cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
 		break;
 	case NL80211_RADAR_CAC_ABORTED:
 		break;
@@ -796,6 +794,6 @@ void cfg80211_cac_event(struct net_device *netdev,
 	}
 	wdev->cac_started = false;
 
-	nl80211_radar_notify(rdev, &chandef, event, netdev, gfp);
+	nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
 }
 EXPORT_SYMBOL(cfg80211_cac_event);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 1ad11de..04fa8bb 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2168,7 +2168,7 @@ static inline u64 wdev_id(struct wireless_dev *wdev)
 }
 
 static int nl80211_send_chandef(struct sk_buff *msg,
-				 struct cfg80211_chan_def *chandef)
+				const struct cfg80211_chan_def *chandef)
 {
 	WARN_ON(!cfg80211_chandef_valid(chandef));
 
@@ -10874,7 +10874,7 @@ EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
 
 void
 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
-		     struct cfg80211_chan_def *chandef,
+		     const struct cfg80211_chan_def *chandef,
 		     enum nl80211_radar_event event,
 		     struct net_device *netdev, gfp_t gfp)
 {
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 2c0f2b3..b1b2313 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -70,7 +70,7 @@ int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
 
 void
 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
-		     struct cfg80211_chan_def *chandef,
+		     const struct cfg80211_chan_def *chandef,
 		     enum nl80211_radar_event event,
 		     struct net_device *netdev, gfp_t gfp);