Commit babea2d4 authored by Andrei Otcheretianski's avatar Andrei Otcheretianski Committed by Luca Coelho
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iwlwifi: mvm: Disconnect on large beacon loss 



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: default avatarAndrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent 93079fd5

drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c

+3 −2
Original line number Diff line number Diff line
@@ -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),

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

+2 −0
Original line number Diff line number Diff line
@@ -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)