mac80211: add rx status flag for short preamble

and use it for the radiotap header

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 25cc192..dcc05a1 100644 (file)
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -363,6 +363,7 @@ static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb)
  * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field)
  *     is valid. This is useful in monitor mode and necessary for beacon frames
  *     to enable IBSS merging.
+ * @RX_FLAG_SHORTPRE: Short preamble was used for this frame
  */
 enum mac80211_rx_flags {
        RX_FLAG_MMIC_ERROR      = 1<<0,
@@ -373,6 +374,7 @@ enum mac80211_rx_flags {
        RX_FLAG_FAILED_FCS_CRC  = 1<<5,
        RX_FLAG_FAILED_PLCP_CRC = 1<<6,
        RX_FLAG_TSFT            = 1<<7,
+       RX_FLAG_SHORTPRE        = 1<<8
 };
 
 /**

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 6db8545..ad47a61 100644 (file)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -143,6 +143,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
        /* IEEE80211_RADIOTAP_FLAGS */
        if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
                *pos |= IEEE80211_RADIOTAP_F_FCS;
+       if (status->flag & RX_FLAG_SHORTPRE)
+               *pos |= IEEE80211_RADIOTAP_F_SHORTPRE;
        pos++;
 
        /* IEEE80211_RADIOTAP_RATE */