wl12xx: support IBSS vif type

Start IBSS role when the interface type is IBSS.
As with sta role, use the dev role until the role
is started.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/wl12xx/main.c

@@ -1770,6 +1770,9 @@ static u8 wl12xx_get_role_type(struct wl1271 *wl)
 	case BSS_TYPE_STA_BSS:
 		return WL1271_ROLE_STA;
 
+	case BSS_TYPE_IBSS:
+		return WL1271_ROLE_IBSS;
+
 	default:
 		wl1271_error("invalid bss_type: %d", wl->bss_type);
 	}
@@ -1848,7 +1851,8 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 		if (ret < 0)
 			goto power_off;
 
-		if (wl->bss_type == BSS_TYPE_STA_BSS) {
+		if (wl->bss_type == BSS_TYPE_STA_BSS ||
+		    wl->bss_type == BSS_TYPE_IBSS) {
 			/*
 			 * The device role is a special role used for
 			 * rx and tx frames prior to association (as
@@ -2078,6 +2082,7 @@ static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
 static int wl1271_join(struct wl1271 *wl, bool set_assoc)
 {
 	int ret;
+	bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
 
 	/*
 	 * One of the side effects of the JOIN command is that is clears
@@ -2094,7 +2099,10 @@ static int wl1271_join(struct wl1271 *wl, bool set_assoc)
 	if (set_assoc)
 		set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
 
-	ret = wl12xx_cmd_role_start_sta(wl);
+	if (is_ibss)
+		ret = wl12xx_cmd_role_start_ibss(wl);
+	else
+		ret = wl12xx_cmd_role_start_sta(wl);
 	if (ret < 0)
 		goto out;
 
@@ -3128,6 +3136,7 @@ static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
 {
 	bool do_join = false, set_assoc = false;
 	bool is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
+	bool ibss_joined = false;
 	u32 sta_rate_set = 0;
 	int ret;
 	struct ieee80211_sta *sta;
@@ -3141,14 +3150,28 @@ static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
 			goto out;
 	}
 
-	if ((changed & BSS_CHANGED_BEACON_INT)  && is_ibss)
+	if (changed & BSS_CHANGED_IBSS) {
+		if (bss_conf->ibss_joined) {
+			set_bit(WL1271_FLAG_IBSS_JOINED, &wl->flags);
+			ibss_joined = true;
+		} else {
+			if (test_and_clear_bit(WL1271_FLAG_IBSS_JOINED,
+					       &wl->flags)) {
+				wl1271_unjoin(wl);
+				wl12xx_cmd_role_start_dev(wl);
+				wl12xx_roc(wl, wl->dev_role_id);
+			}
+		}
+	}
+
+	if ((changed & BSS_CHANGED_BEACON_INT) && ibss_joined)
 		do_join = true;
 
 	/* Need to update the SSID (for filtering etc) */
-	if ((changed & BSS_CHANGED_BEACON) && is_ibss)
+	if ((changed & BSS_CHANGED_BEACON) && ibss_joined)
 		do_join = true;
 
-	if ((changed & BSS_CHANGED_BEACON_ENABLED) && is_ibss) {
+	if ((changed & BSS_CHANGED_BEACON_ENABLED) && ibss_joined) {
 		wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
 			     bss_conf->enable_beacon ? "enabled" : "disabled");
 

drivers/net/wireless/wl12xx/scan.c

@@ -34,6 +34,7 @@ void wl1271_scan_complete_work(struct work_struct *work)
 	struct delayed_work *dwork;
 	struct wl1271 *wl;
 	int ret;
+	bool is_sta, is_ibss;
 
 	dwork = container_of(work, struct delayed_work, work);
 	wl = container_of(dwork, struct wl1271, scan_complete_work);
@@ -59,7 +60,13 @@ void wl1271_scan_complete_work(struct work_struct *work)
 	if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
 		/* restore hardware connection monitoring template */
 		wl1271_cmd_build_ap_probe_req(wl, wl->probereq);
-	} else {
+	}
+
+	/* return to ROC if needed */
+	is_sta = (wl->bss_type == BSS_TYPE_STA_BSS);
+	is_ibss = (wl->bss_type == BSS_TYPE_IBSS);
+	if ((is_sta && !test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) ||
+	    (is_ibss && !test_bit(WL1271_FLAG_IBSS_JOINED, &wl->flags))) {
 		/* restore remain on channel */
 		wl12xx_cmd_role_start_dev(wl);
 		wl12xx_roc(wl, wl->dev_role_id);

drivers/net/wireless/wl12xx/tx.c

@@ -182,7 +182,8 @@ static u8 wl1271_tx_get_hlid(struct wl1271 *wl, struct sk_buff *skb)
 	if (wl->bss_type == BSS_TYPE_AP_BSS)
 		return wl12xx_tx_get_hlid_ap(wl, skb);
 
-	if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
+	if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) ||
+	    test_bit(WL1271_FLAG_IBSS_JOINED, &wl->flags))
 		return wl->sta_hlid;
 	else
 		return wl->dev_hlid;

drivers/net/wireless/wl12xx/wl12xx.h

@@ -324,6 +324,7 @@ struct wl1271_ap_key {
 
 enum wl12xx_flags {
 	WL1271_FLAG_STA_ASSOCIATED,
+	WL1271_FLAG_IBSS_JOINED,
 	WL1271_FLAG_GPIO_POWER,
 	WL1271_FLAG_TX_QUEUE_STOPPED,
 	WL1271_FLAG_TX_PENDING,