p54: fix broadcast buffering in AP mode

The patch "mac80211: fix PS-poll response race" somehow broke
broadcast buffering in a funny way.

During normal operation - stations are awake - the firmware refused
to transmit broadcast frames and reported P54_TX_PSM_CANCELLED.
But everything worked as soon as one station entered PSM.

The reason:
The stack sets IEEE80211_TX_CTL_SEND_AFTER_DTIM for outgoing
broadcast frames as soon as a station is marked as sleeping.
This flag triggers a path which will reroute these frames
into p54's "content after beacon" queue, which is designed
to cope with the demands for psm.

This patch restores the old behavior.

IEEE80211_TX_CTL_CLEAR_PS_FILT will once again be used to signalize
the firmware to ignore the ps canceling for certain frames.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/wireless/p54/txrx.c b/drivers/net/wireless/p54/txrx.c
index 6fc0b6148c8a..b6dda2b27fb5 100644
--- a/drivers/net/wireless/p54/txrx.c
+++ b/drivers/net/wireless/p54/txrx.c
@@ -623,6 +623,9 @@ static void p54_tx_80211_header(struct p54_common *priv, struct sk_buff *skb,
         if (info->flags & IEEE80211_TX_CTL_PSPOLL_RESPONSE)
                 *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
 
+        if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
+                *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
+
         *queue = skb_get_queue_mapping(skb) + P54_QUEUE_DATA;
 
         switch (priv->mode) {