diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 4625a86..31ae5c7 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1060,6 +1060,11 @@
  *	the measurement completed, using the measurement cookie
  *	(%NL80211_ATTR_COOKIE).
  *
+ * @NL80211_CMD_NOTIFY_RADAR: Notify the kernel that a radar signal was
+ *	detected and reported by a neighboring device on the channel
+ *	indicated by %NL80211_ATTR_WIPHY_FREQ and other attributes
+ *	determining the width and type.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -1278,6 +1283,8 @@ enum nl80211_commands {
 	NL80211_CMD_PEER_MEASUREMENT_RESULT,
 	NL80211_CMD_PEER_MEASUREMENT_COMPLETE,
 
+	NL80211_CMD_NOTIFY_RADAR,
+
 	/* add new commands above here */
 
 	/* used to define NL80211_CMD_MAX below */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 4e9133e..71a54ad 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -7990,6 +7990,60 @@ static int nl80211_start_radar_detection(struct sk_buff *skb,
 	return err;
 }
 
+static int nl80211_notify_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 wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_chan_def chandef;
+	enum nl80211_dfs_regions dfs_region;
+	int err;
+
+	dfs_region = reg_get_dfs_region(wiphy);
+	if (dfs_region == NL80211_DFS_UNSET) {
+		GENL_SET_ERR_MSG(info,
+				 "DFS Region is not set. Unexpected Radar indication");
+		return -EINVAL;
+	}
+
+	err = nl80211_parse_chandef(rdev, info, &chandef);
+	if (err) {
+		GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
+		return err;
+	}
+
+	err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
+	if (err < 0) {
+		GENL_SET_ERR_MSG(info, "chandef is invalid");
+		return err;
+	}
+
+	if (err == 0) {
+		GENL_SET_ERR_MSG(info,
+				 "Unexpected Radar indication for chandef/iftype");
+		return -EINVAL;
+	}
+
+	/* Do not process this notification if radar is already detected
+	 * by kernel on this channel, and return success.
+	 */
+	if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
+		return 0;
+
+	cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
+
+	cfg80211_sched_dfs_chan_update(rdev);
+
+	memcpy(&rdev->radar_chandef, &chandef, sizeof(chandef));
+
+	/* Propagate this notification to other radios as well */
+	queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
+
+	return 0;
+}
+
 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
 {
 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -14074,6 +14128,14 @@ static const struct genl_ops nl80211_ops[] = {
 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
 				  NL80211_FLAG_NEED_RTNL,
 	},
+	{
+		.cmd = NL80211_CMD_NOTIFY_RADAR,
+		.doit = nl80211_notify_radar_detection,
+		.policy = nl80211_policy,
+		.flags = GENL_UNS_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	},
 };
 
 static struct genl_family nl80211_fam __ro_after_init = {