staging: vt6656: use NULLFUCTION stack on mac80211

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 4ac85ecb0921df0b1066aa46b7b2c05ea0115b0d..131100510bb0e0e3c4a83ddcfa540a9cd2d537f8 100644 (file)
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -1014,6 +1014,7 @@ 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 39b557511b24fcc9f4c1c1734e2811ed35704b56..29caba728906b9077b04dd5afb347d36d5e8686f 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);