staging: vt6656: use NULLFUCTION stack on mac80211

commit d579c43c82f093e63639151625b2139166c730fd upstream.

It appears that the drivers does not go into power save correctly the
NULL data packets are not being transmitted because it not enabled
in mac80211.

The driver needs to capture ieee80211_is_nullfunc headers and
copy the duration_id to it's own duration data header.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/610971ae-555b-a6c3-61b3-444a0c1e35b4@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index c26882e2bb806b44fe069f16ce9b94569eb9812b..69a48383611f71bcfd02486dae40039e9ca8f654 100644 (file)
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -1016,6 +1016,7 @@ vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
        ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
        ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
        ieee80211_hw_set(priv->hw, SUPPORTS_PS);
+       ieee80211_hw_set(priv->hw, PS_NULLFUNC_STACK);
 
        priv->hw->max_signal = 100;
 

diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c
index ae5fad101d1edbea01c0917567329994d7bb1a60..ab6141f361af02cb91b29e572f31ecb348d20079 100644 (file)
--- a/drivers/staging/vt6656/rxtx.c
+++ b/drivers/staging/vt6656/rxtx.c
@@ -278,11 +278,9 @@ static u16 vnt_rxtx_datahead_g(struct vnt_usb_send_context *tx_context,
                          PK_TYPE_11B, &buf->b);
 
        /* Get Duration and TimeStamp */
-       if (ieee80211_is_pspoll(hdr->frame_control)) {
-               __le16 dur = cpu_to_le16(priv->current_aid | BIT(14) | BIT(15));
-
-               buf->duration_a = dur;
-               buf->duration_b = dur;
+       if (ieee80211_is_nullfunc(hdr->frame_control)) {
+               buf->duration_a = hdr->duration_id;
+               buf->duration_b = hdr->duration_id;
        } else {
                buf->duration_a = vnt_get_duration_le(priv,
                                                tx_context->pkt_type, need_ack);
@@ -371,10 +369,8 @@ static u16 vnt_rxtx_datahead_ab(struct vnt_usb_send_context *tx_context,
                          tx_context->pkt_type, &buf->ab);
 
        /* Get Duration and TimeStampOff */
-       if (ieee80211_is_pspoll(hdr->frame_control)) {
-               __le16 dur = cpu_to_le16(priv->current_aid | BIT(14) | BIT(15));
-
-               buf->duration = dur;
+       if (ieee80211_is_nullfunc(hdr->frame_control)) {
+               buf->duration = hdr->duration_id;
        } else {
                buf->duration = vnt_get_duration_le(priv, tx_context->pkt_type,
                                                    need_ack);