1 files changed, 37 insertions, 0 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ce7cb1b5d453..7dd67a1ff4d5 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -241,6 +241,8 @@ struct ieee80211_bss_conf {
  *      it can be sent out.
  * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211,
  *      used to indicate that a frame was already retried due to PS
+ * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211,
+ *      used to indicate frame should not be encrypted
  */
 enum mac80211_tx_control_flags {
         IEEE80211_TX_CTL_REQ_TX_STATUS          = BIT(0),
@@ -259,6 +261,7 @@ enum mac80211_tx_control_flags {
         IEEE80211_TX_INTFL_RCALGO               = BIT(13),
         IEEE80211_TX_INTFL_NEED_TXPROCESSING    = BIT(14),
         IEEE80211_TX_INTFL_RETRIED              = BIT(15),
+        IEEE80211_TX_INTFL_DONT_ENCRYPT         = BIT(16),
 };
 
 /**
@@ -2094,6 +2097,29 @@ static inline int rate_supported(struct ieee80211_sta *sta,
         return (sta == NULL || sta->supp_rates[band] & BIT(index));
 }
 
+/**
+ * rate_control_send_low - helper for drivers for management/no-ack frames
+ *
+ * Rate control algorithms that agree to use the lowest rate to
+ * send management frames and NO_ACK data with the respective hw
+ * retries should use this in the beginning of their mac80211 get_rate
+ * callback. If true is returned the rate control can simply return.
+ * If false is returned we guarantee that sta and sta and priv_sta is
+ * not null.
+ *
+ * Rate control algorithms wishing to do more intelligent selection of
+ * rate for multicast/broadcast frames may choose to not use this.
+ *
+ * @sta: &struct ieee80211_sta pointer to the target destination. Note
+ *      that this may be null.
+ * @priv_sta: private rate control structure. This may be null.
+ * @txrc: rate control information we sholud populate for mac80211.
+ */
+bool rate_control_send_low(struct ieee80211_sta *sta,
+                           void *priv_sta,
+                           struct ieee80211_tx_rate_control *txrc);
+
+
 static inline s8
 rate_lowest_index(struct ieee80211_supported_band *sband,
                   struct ieee80211_sta *sta)
@@ -2110,6 +2136,17 @@ rate_lowest_index(struct ieee80211_supported_band *sband,
         return 0;
 }
 
+static inline
+bool rate_usable_index_exists(struct ieee80211_supported_band *sband,
+                              struct ieee80211_sta *sta)
+{
+        unsigned int i;
+
+        for (i = 0; i < sband->n_bitrates; i++)
+                if (rate_supported(sta, sband->band, i))
+                        return true;
+        return false;
+}
 
 int ieee80211_rate_control_register(struct rate_control_ops *ops);
 void ieee80211_rate_control_unregister(struct rate_control_ops *ops);