ath9k_htc: Allow AP interface to be created

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

drivers/net/wireless/ath/ath9k/htc.h

@@ -205,6 +205,7 @@ struct ath9k_htc_target_stats {
 } __packed;
 
 #define ATH9K_HTC_MAX_VIF 2
+#define ATH9K_HTC_MAX_BCN_VIF 2
 
 #define INC_VIF(_priv, _type) do {		\
 		switch (_type) {		\
@@ -214,6 +215,9 @@ struct ath9k_htc_target_stats {
 		case NL80211_IFTYPE_ADHOC:	\
 			_priv->num_ibss_vif++;	\
 			break;			\
+		case NL80211_IFTYPE_AP:		\
+			_priv->num_ap_vif++;	\
+			break;			\
 		default:			\
 			break;			\
 		}				\
@@ -227,6 +231,9 @@ struct ath9k_htc_target_stats {
 		case NL80211_IFTYPE_ADHOC:	\
 			_priv->num_ibss_vif--;	\
 			break;			\
+		case NL80211_IFTYPE_AP:		\
+			_priv->num_ap_vif--;	\
+			break;			\
 		default:			\
 			break;			\
 		}				\
@@ -395,6 +402,7 @@ struct ath9k_htc_priv {
 	u8 vif_sta_pos[ATH9K_HTC_MAX_VIF];
 	u8 num_ibss_vif;
 	u8 num_sta_vif;
+	u8 num_ap_vif;
 
 	u16 op_flags;
 	u16 curtxpow;

drivers/net/wireless/ath/ath9k/htc_drv_main.c

@@ -1204,6 +1204,14 @@ static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
 		return -ENOBUFS;
 	}
 
+	if (((vif->type == NL80211_IFTYPE_AP) ||
+	     (vif->type == NL80211_IFTYPE_ADHOC)) &&
+	    ((priv->num_ap_vif + priv->num_ibss_vif) >= ATH9K_HTC_MAX_BCN_VIF)) {
+		ath_err(common, "Max. number of beaconing interfaces reached\n");
+		mutex_unlock(&priv->mutex);
+		return -ENOBUFS;
+	}
+
 	ath9k_htc_ps_wakeup(priv);
 	memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
 	memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
@@ -1215,6 +1223,9 @@ static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
 	case NL80211_IFTYPE_ADHOC:
 		hvif.opmode = cpu_to_be32(HTC_M_IBSS);
 		break;
+	case NL80211_IFTYPE_AP:
+		hvif.opmode = cpu_to_be32(HTC_M_HOSTAP);
+		break;
 	default:
 		ath_err(common,
 			"Interface type %d not yet supported\n", vif->type);