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-rw-r--r--include/linux/nl80211.h3
-rw-r--r--include/net/cfg80211.h12
-rw-r--r--net/wireless/mlme.c12
-rw-r--r--net/wireless/nl80211.c45
-rw-r--r--net/wireless/nl80211.h4
5 files changed, 76 insertions, 0 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 037b4e49889..d706bf3badc 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1819,6 +1819,8 @@ enum nl80211_ps_state {
* 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 @@ enum nl80211_attr_cqm {
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 dd4c43f512e..0663945cfa4 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2601,6 +2601,18 @@ void cfg80211_cqm_rssi_notify(struct net_device *dev,
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 26838d903b9..6980a0c315b 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -1028,3 +1028,15 @@ void cfg80211_cqm_rssi_notify(struct net_device *dev,
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 8734efa663d..67ff7e92cb9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5715,6 +5715,51 @@ nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
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 30d2f939150..16c2f719076 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -87,5 +87,9 @@ 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_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 */