ath9k: Remove rate control reference in VAP

Rate control init is now confined to itself, using the
HT capabilites of the STA from rate_init().

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 27 insertions, 55 deletions

diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
index 8a45b2502d23..0fa1b30bdcb6 100644
--- a/drivers/net/wireless/ath9k/rc.c
+++ b/drivers/net/wireless/ath9k/rc.c
@@ -1446,35 +1446,39 @@ static void ath_rate_tx_complete(struct ath_softc *sc,
                       info_priv->tx.ts_longretry);
 }
 
-/*
- *  Update the SIB's rate control information
- *
- *  This should be called when the supported rates change
- *  (e.g. SME operation, wireless mode change)
- *
- *  It will determine which rates are valid for use.
- */
-static void ath_rc_sib_update(struct ath_softc *sc,
-                              struct ath_rate_node *ath_rc_priv,
-                              u32 capflag, int keep_state,
-                              struct ath_rateset *negotiated_rates,
-                              struct ath_rateset *negotiated_htrates)
+static void ath_rc_init(struct ath_softc *sc,
+                        struct ath_rate_node *ath_rc_priv,
+                        struct ieee80211_supported_band *sband,
+                        struct ieee80211_sta *sta)
 {
         struct ath_rate_table *rate_table = NULL;
         struct ath_rate_softc *asc = (struct ath_rate_softc *)sc->sc_rc;
-        struct ath_rateset *rateset = negotiated_rates;
-        u8 *ht_mcs = (u8 *)negotiated_htrates;
+        struct ath_rateset *rateset = &ath_rc_priv->neg_rates;
+        u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates;
         u8 i, j, k, hi = 0, hthi = 0;
 
         rate_table = (struct ath_rate_table *)
                 asc->hw_rate_table[sc->sc_curmode];
 
+        if (sta->ht_cap.ht_supported) {
+                if (sband->band == IEEE80211_BAND_2GHZ)
+                        rate_table = (struct ath_rate_table *)
+                                asc->hw_rate_table[ATH9K_MODE_11NG_HT20];
+                else
+                        rate_table = (struct ath_rate_table *)
+                                asc->hw_rate_table[ATH9K_MODE_11NA_HT20];
+
+                ath_rc_priv->ht_cap = (WLAN_RC_HT_FLAG | WLAN_RC_DS_FLAG);
+                if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
+                        ath_rc_priv->ht_cap |= WLAN_RC_40_FLAG;
+        }
+
         /* Initial rate table size. Will change depending
          * on the working rate set */
         ath_rc_priv->rate_table_size = MAX_TX_RATE_TBL;
 
         /* Initialize thresholds according to the global rate table */
-        for (i = 0 ; (i < ath_rc_priv->rate_table_size) && (!keep_state); i++) {
+        for (i = 0 ; i < ath_rc_priv->rate_table_size; i++) {
                 ath_rc_priv->state[i].rssi_thres =
                         rate_table->info[i].rssi_ack_validmin;
                 ath_rc_priv->state[i].per = 0;
@@ -1488,24 +1492,24 @@ static void ath_rc_sib_update(struct ath_softc *sc,
                         ath_rc_priv->valid_phy_rateidx[i][j] = 0;
                 ath_rc_priv->valid_phy_ratecnt[i] = 0;
         }
-        ath_rc_priv->rc_phy_mode = (capflag & WLAN_RC_40_FLAG);
+        ath_rc_priv->rc_phy_mode = (ath_rc_priv->ht_cap & WLAN_RC_40_FLAG);
 
         /* Set stream capability */
-        ath_rc_priv->single_stream = (capflag & WLAN_RC_DS_FLAG) ? 0 : 1;
+        ath_rc_priv->single_stream = (ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ? 0 : 1;
 
         if (!rateset->rs_nrates) {
                 /* No working rate, just initialize valid rates */
                 hi = ath_rc_sib_init_validrates(ath_rc_priv, rate_table,
-                                                capflag);
+                                                ath_rc_priv->ht_cap);
         } else {
                 /* Use intersection of working rates and valid rates */
                 hi = ath_rc_sib_setvalid_rates(ath_rc_priv, rate_table,
-                                               rateset, capflag);
-                if (capflag & WLAN_RC_HT_FLAG) {
+                                               rateset, ath_rc_priv->ht_cap);
+                if (ath_rc_priv->ht_cap & WLAN_RC_HT_FLAG) {
                         hthi = ath_rc_sib_setvalid_htrates(ath_rc_priv,
                                                            rate_table,
                                                            ht_mcs,
-                                                           capflag);
+                                                           ath_rc_priv->ht_cap);
                 }
                 hi = A_MAX(hi, hthi);
         }
@@ -1539,29 +1543,6 @@ static void ath_rc_sib_update(struct ath_softc *sc,
         ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4];
 }
 
-void ath_rc_node_update(struct ieee80211_hw *hw, struct ath_rate_node *rc_priv)
-{
-        struct ath_softc *sc = hw->priv;
-        u32 capflag = 0;
-
-        if (hw->conf.ht.enabled) {
-                capflag |= ATH_RC_HT_FLAG | ATH_RC_DS_FLAG;
-                if (sc->sc_ht_info.tx_chan_width == ATH9K_HT_MACMODE_2040)
-                        capflag |= ATH_RC_CW40_FLAG;
-        }
-
-        rc_priv->ht_cap =
-                ((capflag & ATH_RC_DS_FLAG) ? WLAN_RC_DS_FLAG : 0) |
-                ((capflag & ATH_RC_SGI_FLAG) ? WLAN_RC_SGI_FLAG : 0) |
-                ((capflag & ATH_RC_HT_FLAG)  ? WLAN_RC_HT_FLAG : 0) |
-                ((capflag & ATH_RC_CW40_FLAG) ? WLAN_RC_40_FLAG : 0);
-
-
-        ath_rc_sib_update(sc, rc_priv, rc_priv->ht_cap, 0,
-                          &rc_priv->neg_rates,
-                          &rc_priv->neg_ht_rates);
-}
-
 /* Rate Control callbacks */
 static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
                           struct ieee80211_sta *sta, void *priv_sta,
@@ -1684,7 +1665,7 @@ static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
                 ath_rc_priv->neg_ht_rates.rs_nrates = j;
         }
 
-        ath_rc_node_update(sc->hw, priv_sta);
+        ath_rc_init(sc, priv_sta, sband, sta);
 }
 
 static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
@@ -1699,16 +1680,9 @@ static void ath_rate_free(void *priv)
 
 static void *ath_rate_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
 {
-        struct ieee80211_vif *vif;
         struct ath_softc *sc = priv;
-        struct ath_vap *avp;
         struct ath_rate_node *rate_priv;
 
-        vif = sc->sc_vaps[0];
-        ASSERT(vif);
-
-        avp = (void *)vif->drv_priv;
-
         rate_priv = kzalloc(sizeof(struct ath_rate_node), gfp);
         if (!rate_priv) {
                 DPRINTF(sc, ATH_DBG_FATAL,
@@ -1717,9 +1691,7 @@ static void *ath_rate_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp
                 return NULL;
         }
 
-        rate_priv->avp = avp;
         rate_priv->asc = sc->sc_rc;
-        avp->rc_node = rate_priv;
         rate_priv->rssi_down_time = jiffies_to_msecs(jiffies);
 
         return rate_priv;