ath9k: Handle channel initialization for AP mode

Hostapd now passes the HT parameters through the config()
callback, use these to set the appropriate channel in AP mode.

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

1 files changed, 48 insertions, 7 deletions

diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
index 93dfea897ff..7c08583a794 100644
--- a/drivers/net/wireless/ath9k/rc.c
+++ b/drivers/net/wireless/ath9k/rc.c
@@ -1304,6 +1304,38 @@ static void ath_rc_tx_status(struct ath_softc *sc,
 			 xretries, long_retry);
 }
 
+static struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc,
+						    enum ieee80211_band band,
+						    bool is_ht, bool is_cw_40)
+{
+	int mode = 0;
+
+	switch(band) {
+	case IEEE80211_BAND_2GHZ:
+		mode = ATH9K_MODE_11G;
+		if (is_ht)
+			mode = ATH9K_MODE_11NG_HT20;
+		if (is_cw_40)
+			mode = ATH9K_MODE_11NG_HT40PLUS;
+		break;
+	case IEEE80211_BAND_5GHZ:
+		mode = ATH9K_MODE_11A;
+		if (is_ht)
+			mode = ATH9K_MODE_11NA_HT20;
+		if (is_cw_40)
+			mode = ATH9K_MODE_11NA_HT40PLUS;
+		break;
+	default:
+		DPRINTF(sc, ATH_DBG_RATE, "Invalid band\n");
+		return NULL;
+	}
+
+	BUG_ON(mode >= ATH9K_MODE_MAX);
+
+	DPRINTF(sc, ATH_DBG_RATE, "Choosing rate table for mode: %d\n", mode);
+	return sc->hw_rate_table[mode];
+}
+
 static void ath_rc_init(struct ath_softc *sc,
 			struct ath_rate_priv *ath_rc_priv,
 			struct ieee80211_supported_band *sband,
@@ -1314,16 +1346,25 @@ static void ath_rc_init(struct ath_softc *sc,
 	u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates;
 	u8 i, j, k, hi = 0, hthi = 0;
 
-	rate_table = sc->hw_rate_table[sc->sc_curmode];
+	/* FIXME: Adhoc */
+	if ((sc->sc_ah->ah_opmode == ATH9K_M_STA) ||
+	    (sc->sc_ah->ah_opmode == ATH9K_M_IBSS)) {
+		bool is_cw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+		rate_table = ath_choose_rate_table(sc, sband->band,
+						   sta->ht_cap.ht_supported,
+						   is_cw_40);
+	} else if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP) {
+		/* sc_curmode would be set on init through config() */
+		rate_table = sc->hw_rate_table[sc->sc_curmode];
+	}
 
-	if (sta->ht_cap.ht_supported) {
-		if (sband->band == IEEE80211_BAND_2GHZ)
-			rate_table = sc->hw_rate_table[ATH9K_MODE_11NG_HT20];
-		else
-			rate_table = sc->hw_rate_table[ATH9K_MODE_11NA_HT20];
+	if (!rate_table) {
+		DPRINTF(sc, ATH_DBG_FATAL, "Rate table not initialized\n");
+		return;
+	}
 
+	if (sta->ht_cap.ht_supported) {
 		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;
 	}