mac80211: move last_txrate_idx into RC algorithms

This variable in sta_info is only used in a meaningful way
by the Intel RC algorithms, so move it into those.

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

1 files changed, 12 insertions, 8 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
index da23c927380f..46b672c34585 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
@@ -65,6 +65,9 @@ struct iwl3945_rs_sta {
         u8 ibss_sta_added;
         struct timer_list rate_scale_flush;
         struct iwl3945_rate_scale_data win[IWL_RATE_COUNT];
+
+        /* used to be in sta_info */
+        int last_txrate_idx;
 };
 
 static s32 iwl3945_expected_tpt_g[IWL_RATE_COUNT] = {
@@ -319,6 +322,7 @@ static void iwl3945_collect_tx_data(struct iwl3945_rs_sta *rs_sta,
 static void rs_rate_init(void *priv_rate, void *priv_sta,
                          struct ieee80211_local *local, struct sta_info *sta)
 {
+        struct iwl3945_rs_sta *rs_sta = (void *)sta->rate_ctrl_priv;
         int i;
 
         IWL_DEBUG_RATE("enter\n");
@@ -335,11 +339,11 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
                 }
         }
 
-        sta->last_txrate_idx = sta->txrate_idx;
+        rs_sta->last_txrate_idx = sta->txrate_idx;
 
         /* For 5 GHz band it start at IWL_FIRST_OFDM_RATE */
         if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ)
-                sta->last_txrate_idx += IWL_FIRST_OFDM_RATE;
+                rs_sta->last_txrate_idx += IWL_FIRST_OFDM_RATE;
 
         IWL_DEBUG_RATE("leave\n");
 }
@@ -674,14 +678,14 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
                 return;
         }
 
+        rs_sta = (void *)sta->rate_ctrl_priv;
+
         rate_mask = sta->supp_rates[sband->band];
-        index = min(sta->last_txrate_idx & 0xffff, IWL_RATE_COUNT - 1);
+        index = min(rs_sta->last_txrate_idx & 0xffff, IWL_RATE_COUNT - 1);
 
         if (sband->band == IEEE80211_BAND_5GHZ)
                 rate_mask = rate_mask << IWL_FIRST_OFDM_RATE;
 
-        rs_sta = (void *)sta->rate_ctrl_priv;
-
         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
             !rs_sta->ibss_sta_added) {
                 u8 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
@@ -803,11 +807,11 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
 
  out:
 
-        sta->last_txrate_idx = index;
+        rs_sta->last_txrate_idx = index;
         if (sband->band == IEEE80211_BAND_5GHZ)
-                sta->txrate_idx = sta->last_txrate_idx - IWL_FIRST_OFDM_RATE;
+                sta->txrate_idx = rs_sta->last_txrate_idx - IWL_FIRST_OFDM_RATE;
         else
-                sta->txrate_idx = sta->last_txrate_idx;
+                sta->txrate_idx = rs_sta->last_txrate_idx;
 
         rcu_read_unlock();