diff options
| -rw-r--r-- | net/mac80211/sta_info.h | 3 | ||||
| -rw-r--r-- | net/mac80211/status.c | 22 |
2 files changed, 25 insertions, 0 deletions
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 9265acadef32..b562d9b6a702 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -248,6 +248,7 @@ enum plink_state { * @sta: station information we share with the driver * @dead: set to true when sta is unlinked * @uploaded: set to true when sta is uploaded to the driver + * @lost_packets: number of consecutive lost packets */ struct sta_info { /* General information, mostly static */ @@ -335,6 +336,8 @@ struct sta_info { } debugfs; #endif + unsigned int lost_packets; + /* keep last! */ struct ieee80211_sta sta; }; diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 8695cd11dfd9..bed7e32ed908 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -161,6 +161,15 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) ieee80211_sta_tx_notify(sdata, (void *) skb->data); } +/* + * Use a static threshold for now, best value to be determined + * by testing ... + * Should it depend on: + * - on # of retransmissions + * - current throughput (higher value for higher tpt)? + */ +#define STA_LOST_PKT_THRESHOLD 50 + void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) { struct sk_buff *skb2; @@ -247,6 +256,19 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && (info->flags & IEEE80211_TX_STAT_ACK)) ieee80211_frame_acked(sta, skb); + + if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { + if (info->flags & IEEE80211_TX_STAT_ACK) { + if (sta->lost_packets) + sta->lost_packets = 0; + } else if (++sta->lost_packets >= STA_LOST_PKT_THRESHOLD) { + cfg80211_cqm_pktloss_notify(sta->sdata->dev, + sta->sta.addr, + sta->lost_packets, + GFP_ATOMIC); + sta->lost_packets = 0; + } + } } rcu_read_unlock(); |