mac80211: respect rate mask in TX

Bitrate mask were not respected in transmissions, causing (for
example) P2P GO/client to use CCK rates for auth and assoc frames.
Fix it by considering the rate mask in __rate_control_send_low().

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 7f7ce1173bf67671cfb01d756c466c7cd7a6cabe..22b223f13c9fa22994eba6f68769a27b2cfe4eb3 100644 (file)
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -235,7 +235,8 @@ static void rc_send_low_basicrate(s8 *idx, u32 basic_rates,
 static void __rate_control_send_low(struct ieee80211_hw *hw,
                                    struct ieee80211_supported_band *sband,
                                    struct ieee80211_sta *sta,
-                                   struct ieee80211_tx_info *info)
+                                   struct ieee80211_tx_info *info,
+                                   u32 rate_mask)
 {
        int i;
        u32 rate_flags =
@@ -247,6 +248,9 @@ static void __rate_control_send_low(struct ieee80211_hw *hw,
 
        info->control.rates[0].idx = 0;
        for (i = 0; i < sband->n_bitrates; i++) {
+               if (!(rate_mask & BIT(i)))
+                       continue;
+
                if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
                        continue;
 
@@ -277,7 +281,8 @@ bool rate_control_send_low(struct ieee80211_sta *pubsta,
        bool use_basicrate = false;
 
        if (!pubsta || !priv_sta || rc_no_data_or_no_ack_use_min(txrc)) {
-               __rate_control_send_low(txrc->hw, sband, pubsta, info);
+               __rate_control_send_low(txrc->hw, sband, pubsta, info,
+                                       txrc->rate_idx_mask);
 
                if (!pubsta && txrc->bss) {
                        mcast_rate = txrc->bss_conf->mcast_rate[sband->band];
@@ -659,7 +664,8 @@ void ieee80211_get_tx_rates(struct ieee80211_vif *vif,
                rate_control_apply_mask(sdata, sta, sband, info, dest, max_rates);
 
        if (dest[0].idx < 0)
-               __rate_control_send_low(&sdata->local->hw, sband, sta, info);
+               __rate_control_send_low(&sdata->local->hw, sband, sta, info,
+                                       sdata->rc_rateidx_mask[info->band]);
 
        if (sta)
                rate_fixup_ratelist(vif, sband, info, dest, max_rates);