mac80211: move txrate_idx into RC algorithms

The sta_info->txrate_idx member isn't used by all RC algorithms
in the way it was intended to be used, move it into those that
require it (only PID) and keep track in the core code of which
rate was last used for reporting to userspace and the mesh MLME.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 11 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index f7191a9a7fb7..a8711c314e6a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -2064,14 +2064,6 @@ out:
         i = index;
         lq_sta->last_txrate_idx = i;
 
-        /* sta->txrate_idx is an index to A mode rates which start
-         * at IWL_FIRST_OFDM_RATE
-         */
-        if (lq_sta->band == IEEE80211_BAND_5GHZ)
-                sta->txrate_idx = i - IWL_FIRST_OFDM_RATE;
-        else
-                sta->txrate_idx = i;
-
         return;
 }
 
@@ -2234,7 +2226,6 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
 
         lq_sta->flush_timer = 0;
         lq_sta->supp_rates = sta->sta.supp_rates[sband->band];
-        sta->txrate_idx = 3;
         for (j = 0; j < LQ_SIZE; j++)
                 for (i = 0; i < IWL_RATE_COUNT; i++)
                         rs_rate_scale_clear_window(&lq_sta->lq_info[j].win[i]);
@@ -2269,11 +2260,11 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
         }
 
         /* Find highest tx rate supported by hardware and destination station */
+        lq_sta->last_txrate_idx = 3;
         for (i = 0; i < sband->n_bitrates; i++)
                 if (sta->sta.supp_rates[sband->band] & BIT(i))
-                        sta->txrate_idx = i;
+                        lq_sta->last_txrate_idx = i;
 
-        lq_sta->last_txrate_idx = sta->txrate_idx;
         /* For MODE_IEEE80211A, skip over cck rates in global rate table */
         if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ)
                 lq_sta->last_txrate_idx += IWL_FIRST_OFDM_RATE;