diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 037b4e4..d706bf3 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1819,6 +1819,8 @@
  *	the minimum amount the RSSI level must change after an event before a
  *	new event may be issued (to reduce effects of RSSI oscillation).
  * @NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT: RSSI threshold event
+ * @NL80211_ATTR_CQM_PKT_LOSS_EVENT: a u32 value indicating that this many
+ *	consecutive packets were not acknowledged by the peer
  * @__NL80211_ATTR_CQM_AFTER_LAST: internal
  * @NL80211_ATTR_CQM_MAX: highest key attribute
  */
@@ -1827,6 +1829,7 @@
 	NL80211_ATTR_CQM_RSSI_THOLD,
 	NL80211_ATTR_CQM_RSSI_HYST,
 	NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
+	NL80211_ATTR_CQM_PKT_LOSS_EVENT,
 
 	/* keep last */
 	__NL80211_ATTR_CQM_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index dd4c43f..0663945 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2601,6 +2601,18 @@
 			      enum nl80211_cqm_rssi_threshold_event rssi_event,
 			      gfp_t gfp);
 
+/**
+ * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer
+ * @dev: network device
+ * @peer: peer's MAC address
+ * @num_packets: how many packets were lost -- should be a fixed threshold
+ *	but probably no less than maybe 50, or maybe a throughput dependent
+ *	threshold (to account for temporary interference)
+ * @gfp: context flags
+ */
+void cfg80211_cqm_pktloss_notify(struct net_device *dev,
+				 const u8 *peer, u32 num_packets, gfp_t gfp);
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* wiphy_printk helpers, similar to dev_printk */
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 26838d9..6980a0c 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -1028,3 +1028,15 @@
 	nl80211_send_cqm_rssi_notify(rdev, dev, rssi_event, gfp);
 }
 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
+
+void cfg80211_cqm_pktloss_notify(struct net_device *dev,
+				 const u8 *peer, u32 num_packets, gfp_t gfp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+	/* Indicate roaming trigger event to user space */
+	nl80211_send_cqm_pktloss_notify(rdev, dev, peer, num_packets, gfp);
+}
+EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 8734efa..67ff7e9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5715,6 +5715,51 @@
 	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)
+{
+	struct sk_buff *msg;
+	struct nlattr *pinfoattr;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
+	if (!msg)
+		return;
+
+	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
+	if (!hdr) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
+
+	pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
+	if (!pinfoattr)
+		goto nla_put_failure;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
+
+	nla_nest_end(msg, pinfoattr);
+
+	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);
+}
+
 static int nl80211_netlink_notify(struct notifier_block * nb,
 				  unsigned long state,
 				  void *_notify)
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 30d2f93..16c2f71 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -87,5 +87,9 @@
 			     struct net_device *netdev,
 			     enum nl80211_cqm_rssi_threshold_event rssi_event,
 			     gfp_t gfp);
+void
+nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
+				struct net_device *netdev, const u8 *peer,
+				u32 num_packets, gfp_t gfp);
 
 #endif /* __NET_WIRELESS_NL80211_H */