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Diffstat (limited to 'net/mac80211/status.c')
-rw-r--r--net/mac80211/status.c22
1 files changed, 21 insertions, 1 deletions
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index aa06dcad336e..89290e33dafe 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -3,6 +3,7 @@
* Copyright 2005-2006, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2008-2010 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -537,6 +538,8 @@ static void ieee80211_tx_latency_end_msrmnt(struct ieee80211_local *local,
* - current throughput (higher value for higher tpt)?
*/
#define STA_LOST_PKT_THRESHOLD 50
+#define STA_LOST_TDLS_PKT_THRESHOLD 10
+#define STA_LOST_TDLS_PKT_TIME (10*HZ) /* 10secs since last ACK */
static void ieee80211_lost_packet(struct sta_info *sta, struct sk_buff *skb)
{
@@ -547,7 +550,20 @@ static void ieee80211_lost_packet(struct sta_info *sta, struct sk_buff *skb)
!(info->flags & IEEE80211_TX_STAT_AMPDU))
return;
- if (++sta->lost_packets < STA_LOST_PKT_THRESHOLD)
+ sta->lost_packets++;
+ if (!sta->sta.tdls && sta->lost_packets < STA_LOST_PKT_THRESHOLD)
+ return;
+
+ /*
+ * If we're in TDLS mode, make sure that all STA_LOST_TDLS_PKT_THRESHOLD
+ * of the last packets were lost, and that no ACK was received in the
+ * last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss
+ * mechanism.
+ */
+ if (sta->sta.tdls &&
+ (sta->lost_packets < STA_LOST_TDLS_PKT_THRESHOLD ||
+ time_before(jiffies,
+ sta->last_tdls_pkt_time + STA_LOST_TDLS_PKT_TIME)))
return;
cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr,
@@ -694,6 +710,10 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
if (info->flags & IEEE80211_TX_STAT_ACK) {
if (sta->lost_packets)
sta->lost_packets = 0;
+
+ /* Track when last TDLS packet was ACKed */
+ if (test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH))
+ sta->last_tdls_pkt_time = jiffies;
} else {
ieee80211_lost_packet(sta, skb);
}