ath9k: Cleanup TX status API

Calculate the final rate index inside ath_rc_tx_status().

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

diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
index 0e3d20a864e6541f0d60a1145291a0207438b8f1..2051fac8258227f03bec2e7b429b00d9244bf2c7 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -993,9 +993,6 @@ static void ath_debug_stat_retries(struct ath_rate_priv *rc, int rix,
        stats->per = per;
 }
 
-/* Update PER, RSSI and whatever else that the code thinks it is doing.
-   If you can make sense of all this, you really need to go out more. */
-
 static void ath_rc_update_ht(struct ath_softc *sc,
                             struct ath_rate_priv *ath_rc_priv,
                             struct ieee80211_tx_info *tx_info,
@@ -1069,25 +1066,43 @@ static void ath_rc_update_ht(struct ath_softc *sc,
 
 }
 
+static void ath_debug_stat_rc(struct ath_rate_priv *rc, int final_rate)
+{
+       struct ath_rc_stats *stats;
+
+       stats = &rc->rcstats[final_rate];
+       stats->success++;
+}
 
 static void ath_rc_tx_status(struct ath_softc *sc,
                             struct ath_rate_priv *ath_rc_priv,
-                            struct ieee80211_tx_info *tx_info,
-                            int final_ts_idx, int xretries, int long_retry)
+                            struct sk_buff *skb)
 {
-       const struct ath_rate_table *rate_table;
+       const struct ath_rate_table *rate_table = ath_rc_priv->rate_table;
+       struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
        struct ieee80211_tx_rate *rates = tx_info->status.rates;
+       struct ieee80211_tx_rate *rate;
+       int final_ts_idx = 0, xretries = 0, long_retry = 0;
        u8 flags;
        u32 i = 0, rix;
 
-       rate_table = ath_rc_priv->rate_table;
+       for (i = 0; i < sc->hw->max_rates; i++) {
+               rate = &tx_info->status.rates[i];
+               if (rate->idx < 0 || !rate->count)
+                       break;
+
+               final_ts_idx = i;
+               long_retry = rate->count - 1;
+       }
+
+       if (!(tx_info->flags & IEEE80211_TX_STAT_ACK))
+               xretries = 1;
 
        /*
         * If the first rate is not the final index, there
         * are intermediate rate failures to be processed.
         */
        if (final_ts_idx != 0) {
-               /* Process intermediate rates that failed.*/
                for (i = 0; i < final_ts_idx ; i++) {
                        if (rates[i].count != 0 && (rates[i].idx >= 0)) {
                                flags = rates[i].flags;
@@ -1101,8 +1116,8 @@ static void ath_rc_tx_status(struct ath_softc *sc,
 
                                rix = ath_rc_get_rateindex(rate_table, &rates[i]);
                                ath_rc_update_ht(sc, ath_rc_priv, tx_info,
-                                               rix, xretries ? 1 : 2,
-                                               rates[i].count);
+                                                rix, xretries ? 1 : 2,
+                                                rates[i].count);
                        }
                }
        } else {
@@ -1116,15 +1131,16 @@ static void ath_rc_tx_status(struct ath_softc *sc,
                        xretries = 2;
        }
 
-       flags = rates[i].flags;
+       flags = rates[final_ts_idx].flags;
 
        /* If HT40 and we have switched mode from 40 to 20 => don't update */
        if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) &&
            !(ath_rc_priv->ht_cap & WLAN_RC_40_FLAG))
                return;
 
-       rix = ath_rc_get_rateindex(rate_table, &rates[i]);
+       rix = ath_rc_get_rateindex(rate_table, &rates[final_ts_idx]);
        ath_rc_update_ht(sc, ath_rc_priv, tx_info, rix, xretries, long_retry);
+       ath_debug_stat_rc(ath_rc_priv, rix);
 }
 
 static const
@@ -1248,15 +1264,6 @@ static bool ath_tx_aggr_check(struct ath_softc *sc, struct ieee80211_sta *sta,
 /* mac80211 Rate Control callbacks */
 /***********************************/
 
-static void ath_debug_stat_rc(struct ath_rate_priv *rc, int final_rate)
-{
-       struct ath_rc_stats *stats;
-
-       stats = &rc->rcstats[final_rate];
-       stats->success++;
-}
-
-
 static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
                          struct ieee80211_sta *sta, void *priv_sta,
                          struct sk_buff *skb)
@@ -1265,10 +1272,7 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
        struct ath_rate_priv *ath_rc_priv = priv_sta;
        struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-       int final_ts_idx = 0, tx_status = 0;
-       int long_retry = 0;
        __le16 fc = hdr->frame_control;
-       int i;
 
        if (!priv_sta || !ieee80211_is_data(fc))
                return;
@@ -1281,20 +1285,7 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
        if (tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED)
                return;
 
-       for (i = 0; i < sc->hw->max_rates; i++) {
-               struct ieee80211_tx_rate *rate = &tx_info->status.rates[i];
-               if (rate->idx < 0 || !rate->count)
-                       break;
-
-               final_ts_idx = i;
-               long_retry = rate->count - 1;
-       }
-
-       if (!(tx_info->flags & IEEE80211_TX_STAT_ACK))
-               tx_status = 1;
-
-       ath_rc_tx_status(sc, ath_rc_priv, tx_info, final_ts_idx, tx_status,
-                        long_retry);
+       ath_rc_tx_status(sc, ath_rc_priv, skb);
 
        /* Check if aggregation has to be enabled for this tid */
        if (conf_is_ht(&sc->hw->conf) &&
@@ -1310,10 +1301,6 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
                                ieee80211_start_tx_ba_session(sta, tid, 0);
                }
        }
-
-       ath_debug_stat_rc(ath_rc_priv,
-               ath_rc_get_rateindex(ath_rc_priv->rate_table,
-                       &tx_info->status.rates[final_ts_idx]));
 }
 
 static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,