staging: vt6656: vnt_get_rtscts_duration_le use ieee80211_rts_duration

use the mac80211 ieee80211_rts_duration for RTS frames.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/377a4cc3-cfe3-91aa-cf71-1063f311426a@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c
index 68be0fa..a9c71ae 100644 (file)
--- a/drivers/staging/vt6656/rxtx.c
+++ b/drivers/staging/vt6656/rxtx.c
@@ -280,28 +280,18 @@ static __le16 vnt_get_rtscts_duration_le(struct vnt_usb_send_context *context,
                                         u8 dur_type, u8 pkt_type, u16 rate)
 {
        struct vnt_private *priv = context->priv;
-       u32 cts_time = 0, dur_time = 0;
+       u32 dur_time = 0;
        u32 frame_length = context->frame_len;
        u8 need_ack = context->need_ack;
+       struct ieee80211_tx_info *info = IEEE80211_SKB_CB(context->skb);
 
        switch (dur_type) {
+       /* fall through */
        case RTSDUR_BB:
        case RTSDUR_BA:
-               cts_time = vnt_get_frame_time(priv->preamble_type, pkt_type,
-                                             14, priv->top_cck_basic_rate);
-               dur_time = cts_time + 2 * priv->sifs +
-                       vnt_get_rsvtime(priv, pkt_type,
-                                       frame_length, rate, need_ack);
-               break;
-
        case RTSDUR_AA:
-               cts_time = vnt_get_frame_time(priv->preamble_type, pkt_type,
-                                             14, priv->top_ofdm_basic_rate);
-               dur_time = cts_time + 2 * priv->sifs +
-                       vnt_get_rsvtime(priv, pkt_type,
-                                       frame_length, rate, need_ack);
-               break;
-
+               return ieee80211_rts_duration(priv->hw, priv->vif,
+                                             context->frame_len, info);
        case CTSDUR_BA:
                dur_time = priv->sifs + vnt_get_rsvtime(priv,
                                pkt_type, frame_length, rate, need_ack);