diff options
| author | Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de> | 2011-11-21 21:34:30 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-11-28 14:36:21 -0500 |
| commit | 6674f210e9dbf30e592ccd85b0cf90bd8d1d2d28 (patch) | |
| tree | 511ac1f57e551b0cfcbe683630a21a39113fcfdb /net/mac80211/tx.c | |
| parent | b53be7920bd9bb1bb99fecc2ff537bc79d24082f (diff) | |
mac80211: fix duration calculation for QoS NOACK frames
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/tx.c')
| -rw-r--r-- | 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 205fdcb70ff..a5ff02fbda8 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -151,11 +151,15 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx, 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) { |