Signed-off-by: Simon Wunderlich <siwu@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@xxxxxxxxxxxxxxxxxxx>
---
net/mac80211/tx.c | 14 +++++++++-----
1 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index f632690..8b8952a 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -150,11 +150,15 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
rate = mrate;
}
- /* Time needed to transmit ACK
- * (10 bytes + 4-byte FCS = 112 bits) plus SIFS; rounded up
- * to closest integer */
-
- dur = ieee80211_frame_duration(local, 10, rate, erp,
+ /* Don't calculate ACKs for QoS Frames with NoAck Policy set */
+ if (ieee80211_is_data_qos(hdr->frame_control) &&
+ *(ieee80211_get_qos_ctl(hdr)) | IEEE80211_QOS_CTL_ACK_POLICY_NOACK)
+ dur = 0;
+ else
+ /* Time needed to transmit ACK
+ * (10 bytes + 4-byte FCS = 112 bits) plus SIFS; rounded up
+ * to closest integer */
+ dur = ieee80211_frame_duration(local, 10, rate, erp,
tx->sdata->vif.bss_conf.use_short_preamble);
if (next_frag_len) {
--
1.7.7.3
--
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