diff mbox series

[06/21] iwlwifi: mvm: Disconnect on large beacon loss

Message ID 20190127101908.6428-7-luca@coelho.fi (mailing list archive)
State Accepted
Delegated to: Luca Coelho
Headers show
Series iwlwifi: updates intended for v5.1 2019-01-27 | expand

Commit Message

Luca Coelho Jan. 27, 2019, 10:18 a.m. UTC 
From: Andrei Otcheretianski <andrei.otcheretianski@intel.com>

Some buggy APs stop sending beacons, but continue to ack our null data
packets or even run some traffic. It's better not to stick connected to
such an AP forever, so disconnect after some larger beacon loss
threshold is crossed.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 5 +++--
 drivers/net/wireless/intel/iwlwifi/mvm/mvm.h      | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
index c868ebfa10ce..7cfdd07d8736 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
@@ -1415,8 +1415,9 @@  void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
 	 * TODO: the threshold should be adjusted based on latency conditions,
 	 * and/or in case of a CS flow on one of the other AP vifs.
 	 */
-	if (le32_to_cpu(mb->consec_missed_beacons_since_last_rx) >
-	     IWL_MVM_MISSED_BEACONS_THRESHOLD)
+	if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG)
+		iwl_mvm_connection_loss(mvm, vif, "missed beacons");
+	else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD)
 		ieee80211_beacon_loss(vif);
 
 	trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 5d28080e257e..55f08e433331 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -94,6 +94,8 @@ 
 /* RSSI offset for WkP */
 #define IWL_RSSI_OFFSET 50
 #define IWL_MVM_MISSED_BEACONS_THRESHOLD 8
+#define IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG 16
+
 /* A TimeUnit is 1024 microsecond */
 #define MSEC_TO_TU(_msec)	(_msec*1000/1024)