rt2x00 : avoid timestamp for monitor injected frame.

Do not include timestamp for a frame that has been injected
 through a monitor interface.

Signed-off-by: Benoit PAPILLAULT <benoit.papillault@free.fr>
Signed-off-by: Alban Browaeys <prahal@yahoo.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <ivdoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index 842c4e3..b8f0954 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -387,10 +387,13 @@
 
 	/*
 	 * Beacons and probe responses require the tsf timestamp
-	 * to be inserted into the frame.
+	 * to be inserted into the frame, except for a frame that has been injected
+	 * through a monitor interface. This latter is needed for testing a
+	 * monitor interface.
 	 */
-	if (ieee80211_is_beacon(hdr->frame_control) ||
-	    ieee80211_is_probe_resp(hdr->frame_control))
+	if ((ieee80211_is_beacon(hdr->frame_control) ||
+	    ieee80211_is_probe_resp(hdr->frame_control)) &&
+	    (!(tx_info->flags & IEEE80211_TX_CTL_INJECTED)))
 		__set_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags);
 
 	/*