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iwlwifi: mvm: Add a missed beacons threshold

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Instead of always calling ieee80211_beacon_loss() on every missed
beacons notification, call this function only if the number of
consecutive missed beacons from last rx is higher than a predefined
threshold.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Ilan Peer 2013-12-24 22:08:14 +02:00 committed by Emmanuel Grumbach
parent 2dceedaed6
commit 12d423e816
2 changed files with 21 additions and 5 deletions
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25
drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
View File

@ -1191,10 +1191,18 @@ int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
u16 *id = _data;
struct iwl_missed_beacons_notif *missed_beacons = _data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (mvmvif->id == *id)
if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
return;
/*
* 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(missed_beacons->consec_missed_beacons_since_last_rx) >
IWL_MVM_MISSED_BEACONS_THRESHOLD)
ieee80211_beacon_loss(vif);
}
@ -1203,12 +1211,19 @@ int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_missed_beacons_notif *missed_beacons = (void *)pkt->data;
u16 id = (u16)le32_to_cpu(missed_beacons->mac_id);
struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
IWL_DEBUG_INFO(mvm,
"missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
le32_to_cpu(mb->mac_id),
le32_to_cpu(mb->consec_missed_beacons),
le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
le32_to_cpu(mb->num_recvd_beacons),
le32_to_cpu(mb->num_expected_beacons));
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_beacon_loss_iterator,
&id);
mb);
return 0;
}

1
drivers/net/wireless/iwlwifi/mvm/mvm.h
View File

@ -81,6 +81,7 @@
#define IWL_MVM_MAX_ADDRESSES 5
/* RSSI offset for WkP */
#define IWL_RSSI_OFFSET 50
#define IWL_MVM_MISSED_BEACONS_THRESHOLD 8
enum iwl_mvm_tx_fifo {
IWL_MVM_TX_FIFO_BK = 0,