9 files changed, 463 insertions, 17 deletions

diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 396373f..810c23c 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -147,6 +147,32 @@ static void chandef_primary_freqs(const struct cfg80211_chan_def *c,
 	}
 }
 
+static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
+{
+	int width;
+
+	switch (c->width) {
+	case NL80211_CHAN_WIDTH_20:
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		width = 20;
+		break;
+	case NL80211_CHAN_WIDTH_40:
+		width = 40;
+		break;
+	case NL80211_CHAN_WIDTH_80P80:
+	case NL80211_CHAN_WIDTH_80:
+		width = 80;
+		break;
+	case NL80211_CHAN_WIDTH_160:
+		width = 160;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		return -1;
+	}
+	return width;
+}
+
 const struct cfg80211_chan_def *
 cfg80211_chandef_compatible(const struct cfg80211_chan_def *c1,
 			    const struct cfg80211_chan_def *c2)
@@ -192,6 +218,93 @@ cfg80211_chandef_compatible(const struct cfg80211_chan_def *c1,
 }
 EXPORT_SYMBOL(cfg80211_chandef_compatible);
 
+static void cfg80211_set_chans_dfs_state(struct wiphy *wiphy, u32 center_freq,
+					 u32 bandwidth,
+					 enum nl80211_dfs_state dfs_state)
+{
+	struct ieee80211_channel *c;
+	u32 freq;
+
+	for (freq = center_freq - bandwidth/2 + 10;
+	     freq <= center_freq + bandwidth/2 - 10;
+	     freq += 20) {
+		c = ieee80211_get_channel(wiphy, freq);
+		if (!c || !(c->flags & IEEE80211_CHAN_RADAR))
+			continue;
+
+		c->dfs_state = dfs_state;
+		c->dfs_state_entered = jiffies;
+	}
+}
+
+void cfg80211_set_dfs_state(struct wiphy *wiphy,
+			    const struct cfg80211_chan_def *chandef,
+			    enum nl80211_dfs_state dfs_state)
+{
+	int width;
+
+	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
+		return;
+
+	width = cfg80211_chandef_get_width(chandef);
+	if (width < 0)
+		return;
+
+	cfg80211_set_chans_dfs_state(wiphy, chandef->center_freq1,
+				     width, dfs_state);
+
+	if (!chandef->center_freq2)
+		return;
+	cfg80211_set_chans_dfs_state(wiphy, chandef->center_freq2,
+				     width, dfs_state);
+}
+
+static int cfg80211_get_chans_dfs_required(struct wiphy *wiphy,
+					    u32 center_freq,
+					    u32 bandwidth)
+{
+	struct ieee80211_channel *c;
+	u32 freq;
+
+	for (freq = center_freq - bandwidth/2 + 10;
+	     freq <= center_freq + bandwidth/2 - 10;
+	     freq += 20) {
+		c = ieee80211_get_channel(wiphy, freq);
+		if (!c)
+			return -EINVAL;
+
+		if (c->flags & IEEE80211_CHAN_RADAR)
+			return 1;
+	}
+	return 0;
+}
+
+
+int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
+				  const struct cfg80211_chan_def *chandef)
+{
+	int width;
+	int r;
+
+	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
+		return -EINVAL;
+
+	width = cfg80211_chandef_get_width(chandef);
+	if (width < 0)
+		return -EINVAL;
+
+	r = cfg80211_get_chans_dfs_required(wiphy, chandef->center_freq1,
+					    width);
+	if (r)
+		return r;
+
+	if (!chandef->center_freq2)
+		return 0;
+
+	return cfg80211_get_chans_dfs_required(wiphy, chandef->center_freq2,
+					       width);
+}
+
 static bool cfg80211_secondary_chans_ok(struct wiphy *wiphy,
 					u32 center_freq, u32 bandwidth,
 					u32 prohibited_flags)
@@ -203,7 +316,16 @@ static bool cfg80211_secondary_chans_ok(struct wiphy *wiphy,
 	     freq <= center_freq + bandwidth/2 - 10;
 	     freq += 20) {
 		c = ieee80211_get_channel(wiphy, freq);
-		if (!c || c->flags & prohibited_flags)
+		if (!c)
+			return false;
+
+		/* check for radar flags */
+		if ((prohibited_flags & c->flags & IEEE80211_CHAN_RADAR) &&
+		    (c->dfs_state != NL80211_DFS_AVAILABLE))
+			return false;
+
+		/* check for the other flags */
+		if (c->flags & prohibited_flags & ~IEEE80211_CHAN_RADAR)
 			return false;
 	}
 
@@ -344,7 +466,10 @@ cfg80211_get_chan_state(struct wireless_dev *wdev,
 		break;
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_P2P_GO:
-		if (wdev->beacon_interval) {
+		if (wdev->cac_started) {
+			*chan = wdev->channel;
+			*chanmode = CHAN_MODE_SHARED;
+		} else if (wdev->beacon_interval) {
 			*chan = wdev->channel;
 			*chanmode = CHAN_MODE_SHARED;
 		}
diff --git a/net/wireless/core.c b/net/wireless/core.c
index f0a1bbe..9220021 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -324,6 +324,8 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
 	INIT_LIST_HEAD(&rdev->bss_list);
 	INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done);
 	INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results);
+	INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk,
+			  cfg80211_dfs_channels_update_work);
 #ifdef CONFIG_CFG80211_WEXT
 	rdev->wiphy.wext = &cfg80211_wext_handler;
 #endif
@@ -695,6 +697,7 @@ void wiphy_unregister(struct wiphy *wiphy)
 	flush_work(&rdev->scan_done_wk);
 	cancel_work_sync(&rdev->conn_work);
 	flush_work(&rdev->event_work);
+	cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
 
 	if (rdev->wowlan && rdev->ops->set_wakeup)
 		rdev_set_wakeup(rdev, false);
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 949c957..3aec0e4 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -86,6 +86,8 @@ struct cfg80211_registered_device {
 
 	struct cfg80211_wowlan *wowlan;
 
+	struct delayed_work dfs_update_channels_wk;
+
 	/* must be last because of the way we do wiphy_priv(),
 	 * and it should at least be aligned to NETDEV_ALIGN */
 	struct wiphy wiphy __aligned(NETDEV_ALIGN);
@@ -431,6 +433,22 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
 				 enum cfg80211_chan_mode chanmode,
 				 u8 radar_detect);
 
+/**
+ * cfg80211_chandef_dfs_required - checks if radar detection is required
+ * @wiphy: the wiphy to validate against
+ * @chandef: the channel definition to check
+ * Return: 1 if radar detection is required, 0 if it is not, < 0 on error
+ */
+int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
+				  const struct cfg80211_chan_def *c);
+
+void cfg80211_set_dfs_state(struct wiphy *wiphy,
+			    const struct cfg80211_chan_def *chandef,
+			    enum nl80211_dfs_state dfs_state);
+
+void cfg80211_dfs_channels_update_work(struct work_struct *work);
+
+
 static inline int
 cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
 			      struct wireless_dev *wdev,
@@ -457,6 +475,16 @@ cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
 					    chan, chanmode, 0);
 }
 
+static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
+{
+	unsigned long end = jiffies;
+
+	if (end >= start)
+		return jiffies_to_msecs(end - start);
+
+	return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
+}
+
 void
 cfg80211_get_chan_state(struct wireless_dev *wdev,
 		        struct ieee80211_channel **chan,
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 8e69207..caddca3 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -987,3 +987,123 @@ void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
 	nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
 }
 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
+
+void cfg80211_dfs_channels_update_work(struct work_struct *work)
+{
+	struct delayed_work *delayed_work;
+	struct cfg80211_registered_device *rdev;
+	struct cfg80211_chan_def chandef;
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *c;
+	struct wiphy *wiphy;
+	bool check_again = false;
+	unsigned long timeout, next_time = 0;
+	int bandid, i;
+
+	delayed_work = container_of(work, struct delayed_work, work);
+	rdev = container_of(delayed_work, struct cfg80211_registered_device,
+			    dfs_update_channels_wk);
+	wiphy = &rdev->wiphy;
+
+	mutex_lock(&cfg80211_mutex);
+	for (bandid = 0; bandid < IEEE80211_NUM_BANDS; bandid++) {
+		sband = wiphy->bands[bandid];
+		if (!sband)
+			continue;
+
+		for (i = 0; i < sband->n_channels; i++) {
+			c = &sband->channels[i];
+
+			if (c->dfs_state != NL80211_DFS_UNAVAILABLE)
+				continue;
+
+			timeout = c->dfs_state_entered +
+				  IEEE80211_DFS_MIN_NOP_TIME_MS;
+
+			if (time_after_eq(jiffies, timeout)) {
+				c->dfs_state = NL80211_DFS_USABLE;
+				cfg80211_chandef_create(&chandef, c,
+							NL80211_CHAN_NO_HT);
+
+				nl80211_radar_notify(rdev, &chandef,
+						     NL80211_RADAR_NOP_FINISHED,
+						     NULL, GFP_ATOMIC);
+				continue;
+			}
+
+			if (!check_again)
+				next_time = timeout - jiffies;
+			else
+				next_time = min(next_time, timeout - jiffies);
+			check_again = true;
+		}
+	}
+	mutex_unlock(&cfg80211_mutex);
+
+	/* reschedule if there are other channels waiting to be cleared again */
+	if (check_again)
+		queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
+				   next_time);
+}
+
+
+void cfg80211_radar_event(struct wiphy *wiphy,
+			  struct cfg80211_chan_def *chandef,
+			  gfp_t gfp)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	unsigned long timeout;
+
+	trace_cfg80211_radar_event(wiphy, chandef);
+
+	/* only set the chandef supplied channel to unavailable, in
+	 * case the radar is detected on only one of multiple channels
+	 * spanned by the chandef.
+	 */
+	cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
+
+	timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_NOP_TIME_MS);
+	queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
+			   timeout);
+
+	nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp);
+}
+EXPORT_SYMBOL(cfg80211_radar_event);
+
+void cfg80211_cac_event(struct net_device *netdev,
+			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);
+
+	if (WARN_ON(!wdev->cac_started))
+		return;
+
+	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);
+		break;
+	case NL80211_RADAR_CAC_ABORTED:
+		break;
+	default:
+		WARN_ON(1);
+		return;
+	}
+	wdev->cac_started = false;
+
+	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 d29a461..c1e18cc 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -552,9 +552,16 @@ static int nl80211_msg_put_channel(struct sk_buff *msg,
 	if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 		goto nla_put_failure;
-	if ((chan->flags & IEEE80211_CHAN_RADAR) &&
-	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
-		goto nla_put_failure;
+	if (chan->flags & IEEE80211_CHAN_RADAR) {
+		u32 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
+		if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
+			goto nla_put_failure;
+		if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
+				chan->dfs_state))
+			goto nla_put_failure;
+		if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, time))
+			goto nla_put_failure;
+	}
 
 	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 			DBM_TO_MBM(chan->max_power)))
@@ -2775,6 +2782,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_ap_settings params;
 	int err;
+	u8 radar_detect_width = 0;
 
 	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
 	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
@@ -2893,9 +2901,19 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
 		return -EINVAL;
 
+	err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
+	if (err < 0)
+		return err;
+	if (err) {
+		radar_detect_width = BIT(params.chandef.width);
+		params.radar_required = true;
+	}
+
 	mutex_lock(&rdev->devlist_mtx);
-	err = cfg80211_can_use_chan(rdev, wdev, params.chandef.chan,
-				    CHAN_MODE_SHARED);
+	err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
+					   params.chandef.chan,
+					   CHAN_MODE_SHARED,
+					   radar_detect_width);
 	mutex_unlock(&rdev->devlist_mtx);
 
 	if (err)
@@ -5055,6 +5073,54 @@ static int nl80211_stop_sched_scan(struct sk_buff *skb,
 	return err;
 }
 
+static int nl80211_start_radar_detection(struct sk_buff *skb,
+					 struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_chan_def chandef;
+	int err;
+
+	err = nl80211_parse_chandef(rdev, info, &chandef);
+	if (err)
+		return err;
+
+	if (wdev->cac_started)
+		return -EBUSY;
+
+	err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
+	if (err < 0)
+		return err;
+
+	if (err == 0)
+		return -EINVAL;
+
+	if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
+		return -EINVAL;
+
+	if (!rdev->ops->start_radar_detection)
+		return -EOPNOTSUPP;
+
+	mutex_lock(&rdev->devlist_mtx);
+	err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
+					   chandef.chan, CHAN_MODE_SHARED,
+					   BIT(chandef.width));
+	if (err)
+		goto err_locked;
+
+	err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
+	if (!err) {
+		wdev->channel = chandef.chan;
+		wdev->cac_started = true;
+		wdev->cac_start_time = jiffies;
+	}
+err_locked:
+	mutex_unlock(&rdev->devlist_mtx);
+
+	return err;
+}
+
 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
 			    u32 seq, int flags,
 			    struct cfg80211_registered_device *rdev,
@@ -8305,6 +8371,14 @@ static struct genl_ops nl80211_ops[] = {
 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
 				  NL80211_FLAG_NEED_RTNL,
 	},
+	{
+		.cmd = NL80211_CMD_RADAR_DETECT,
+		.doit = nl80211_start_radar_detection,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	},
 };
 
 static struct genl_multicast_group nl80211_mlme_mcgrp = {
@@ -9502,6 +9576,57 @@ nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev,
 }
 
 void
+nl80211_radar_notify(struct cfg80211_registered_device *rdev,
+		     struct cfg80211_chan_def *chandef,
+		     enum nl80211_radar_event event,
+		     struct net_device *netdev, gfp_t gfp)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
+	if (!msg)
+		return;
+
+	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
+	if (!hdr) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
+		goto nla_put_failure;
+
+	/* NOP and radar events don't need a netdev parameter */
+	if (netdev) {
+		struct wireless_dev *wdev = netdev->ieee80211_ptr;
+
+		if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
+		    nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
+			goto nla_put_failure;
+	}
+
+	if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
+		goto nla_put_failure;
+
+	if (nl80211_send_chandef(msg, chandef))
+		goto nla_put_failure;
+
+	if (genlmsg_end(msg, hdr) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+				nl80211_mlme_mcgrp.id, gfp);
+	return;
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
+}
+
+void
 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
 				struct net_device *netdev, const u8 *peer,
 				u32 num_packets, gfp_t gfp)
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 2acba84..b061da4 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -108,6 +108,13 @@ nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
 			     struct net_device *netdev,
 			     enum nl80211_cqm_rssi_threshold_event rssi_event,
 			     gfp_t gfp);
+
+void
+nl80211_radar_notify(struct cfg80211_registered_device *rdev,
+		     struct cfg80211_chan_def *chandef,
+		     enum nl80211_radar_event event,
+		     struct net_device *netdev, gfp_t gfp);
+
 void
 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
 				struct net_device *netdev, const u8 *peer,
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 08d3da2..e97d5b0 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -884,6 +884,9 @@ static void handle_channel(struct wiphy *wiphy,
 		return;
 	}
 
+	chan->dfs_state = NL80211_DFS_USABLE;
+	chan->dfs_state_entered = jiffies;
+
 	chan->beacon_found = false;
 	chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags);
 	chan->max_antenna_gain =
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index d0fc6da..f0d9b51 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1210,16 +1210,6 @@ static void ieee80211_scan_add_ies(struct iw_request_info *info,
 	}
 }
 
-static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
-{
-	unsigned long end = jiffies;
-
-	if (end >= start)
-		return jiffies_to_msecs(end - start);
-
-	return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
-}
-
 static char *
 ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info,
 	      struct cfg80211_internal_bss *bss, char *current_ev,
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index c9cafb0..b7a5313 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -2051,6 +2051,21 @@ TRACE_EVENT(cfg80211_reg_can_beacon,
 		  WIPHY_PR_ARG, CHAN_DEF_PR_ARG)
 );
 
+TRACE_EVENT(cfg80211_chandef_dfs_required,
+	TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef),
+	TP_ARGS(wiphy, chandef),
+	TP_STRUCT__entry(
+		WIPHY_ENTRY
+		CHAN_DEF_ENTRY
+	),
+	TP_fast_assign(
+		WIPHY_ASSIGN;
+		CHAN_DEF_ASSIGN(chandef);
+	),
+	TP_printk(WIPHY_PR_FMT ", " CHAN_DEF_PR_FMT,
+		  WIPHY_PR_ARG, CHAN_DEF_PR_ARG)
+);
+
 TRACE_EVENT(cfg80211_ch_switch_notify,
 	TP_PROTO(struct net_device *netdev,
 		 struct cfg80211_chan_def *chandef),
@@ -2067,6 +2082,36 @@ TRACE_EVENT(cfg80211_ch_switch_notify,
 		  NETDEV_PR_ARG, CHAN_DEF_PR_ARG)
 );
 
+TRACE_EVENT(cfg80211_radar_event,
+	TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef),
+	TP_ARGS(wiphy, chandef),
+	TP_STRUCT__entry(
+		WIPHY_ENTRY
+		CHAN_DEF_ENTRY
+	),
+	TP_fast_assign(
+		WIPHY_ASSIGN;
+		CHAN_DEF_ASSIGN(chandef);
+	),
+	TP_printk(WIPHY_PR_FMT ", " CHAN_DEF_PR_FMT,
+		  WIPHY_PR_ARG, CHAN_DEF_PR_ARG)
+);
+
+TRACE_EVENT(cfg80211_cac_event,
+	TP_PROTO(struct net_device *netdev, enum nl80211_radar_event evt),
+	TP_ARGS(netdev, evt),
+	TP_STRUCT__entry(
+		NETDEV_ENTRY
+		__field(enum nl80211_radar_event, evt)
+	),
+	TP_fast_assign(
+		NETDEV_ASSIGN;
+		__entry->evt = evt;
+	),
+	TP_printk(NETDEV_PR_FMT ",  event: %d",
+		  NETDEV_PR_ARG, __entry->evt)
+);
+
 DECLARE_EVENT_CLASS(cfg80211_rx_evt,
 	TP_PROTO(struct net_device *netdev, const u8 *addr),
 	TP_ARGS(netdev, addr),