wl12xx: use dynamic hlids for AP-mode

Using hlid=0 in AP mode is a bug. Dynamically allocate HLIDs.

Set the "first sta hlid" as 3. This will have to be changed
when multiple vifs will be supported.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/wl12xx/cmd.c

@@ -682,11 +682,19 @@ int wl12xx_cmd_role_start_ap(struct wl1271 *wl)
 		goto out;
 	}
 
+	ret = wl12xx_allocate_link(wl, &wl->ap_global_hlid);
+	if (ret < 0)
+		goto out_free;
+
+	ret = wl12xx_allocate_link(wl, &wl->ap_bcast_hlid);
+	if (ret < 0)
+		goto out_free_global;
+
 	cmd->role_id = wl->role_id;
 	cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 	cmd->ap.bss_index = WL1271_AP_BSS_INDEX;
-	cmd->ap.global_hlid = WL1271_AP_GLOBAL_HLID;
-	cmd->ap.broadcast_hlid = WL1271_AP_BROADCAST_HLID;
+	cmd->ap.global_hlid = wl->ap_global_hlid;
+	cmd->ap.broadcast_hlid = wl->ap_bcast_hlid;
 	cmd->ap.basic_rate_set = cpu_to_le32(wl->basic_rate_set);
 	cmd->ap.beacon_interval = cpu_to_le16(wl->beacon_int);
 	cmd->ap.dtim_interval = bss_conf->dtim_period;
@@ -713,9 +721,17 @@ int wl12xx_cmd_role_start_ap(struct wl1271 *wl)
 	ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 	if (ret < 0) {
 		wl1271_error("failed to initiate cmd role start ap");
-		goto out_free;
+		goto out_free_bcast;
 	}
 
+	goto out_free;
+
+out_free_bcast:
+	wl12xx_free_link(wl, &wl->ap_bcast_hlid);
+
+out_free_global:
+	wl12xx_free_link(wl, &wl->ap_global_hlid);
+
 out_free:
 	kfree(cmd);
 
@@ -744,6 +760,9 @@ int wl12xx_cmd_role_stop_ap(struct wl1271 *wl)
 		goto out_free;
 	}
 
+	wl12xx_free_link(wl, &wl->ap_bcast_hlid);
+	wl12xx_free_link(wl, &wl->ap_global_hlid);
+
 out_free:
 	kfree(cmd);
 
@@ -1253,7 +1272,7 @@ int wl1271_cmd_set_ap_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 	if (!cmd)
 		return -ENOMEM;
 
-	if (hlid == WL1271_AP_BROADCAST_HLID) {
+	if (hlid == wl->ap_bcast_hlid) {
 		if (key_type == KEY_WEP)
 			lid_type = WEP_DEFAULT_LID_TYPE;
 		else

drivers/net/wireless/wl12xx/main.c

@@ -1972,8 +1972,11 @@ static void __wl1271_op_remove_interface(struct wl1271 *wl,
 		wl1271_ps_elp_sleep(wl);
 	}
 deinit:
+	/* clear all hlids (except system_hlid) */
 	wl->sta_hlid = WL12XX_INVALID_LINK_ID;
 	wl->dev_hlid = WL12XX_INVALID_LINK_ID;
+	wl->ap_bcast_hlid = WL12XX_INVALID_LINK_ID;
+	wl->ap_global_hlid = WL12XX_INVALID_LINK_ID;
 
 	/*
 	 * this must be before the cancel_work calls below, so that the work
@@ -2538,7 +2541,7 @@ static int wl1271_ap_init_hwenc(struct wl1271 *wl)
 
 	if (wep_key_added) {
 		ret = wl12xx_cmd_set_default_wep_key(wl, wl->default_key,
-						     WL1271_AP_BROADCAST_HLID);
+						     wl->ap_bcast_hlid);
 		if (ret < 0)
 			goto out;
 	}
@@ -2563,7 +2566,7 @@ static int wl1271_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 			wl_sta = (struct wl1271_station *)sta->drv_priv;
 			hlid = wl_sta->hlid;
 		} else {
-			hlid = WL1271_AP_BROADCAST_HLID;
+			hlid = wl->ap_bcast_hlid;
 		}
 
 		if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags)) {
@@ -4449,6 +4452,8 @@ struct ieee80211_hw *wl1271_alloc_hw(void)
 	wl->dev_role_id = WL12XX_INVALID_ROLE_ID;
 	wl->dev_hlid = WL12XX_INVALID_LINK_ID;
 	wl->session_counter = 0;
+	wl->ap_bcast_hlid = WL12XX_INVALID_LINK_ID;
+	wl->ap_global_hlid = WL12XX_INVALID_LINK_ID;
 	setup_timer(&wl->rx_streaming_timer, wl1271_rx_streaming_timer,
 		    (unsigned long) wl);
 	wl->fwlog_size = 0;

drivers/net/wireless/wl12xx/tx.c

@@ -38,7 +38,7 @@ static int wl1271_set_default_wep_key(struct wl1271 *wl, u8 id)
 
 	if (is_ap)
 		ret = wl12xx_cmd_set_default_wep_key(wl, id,
-						     WL1271_AP_BROADCAST_HLID);
+						     wl->ap_bcast_hlid);
 	else
 		ret = wl12xx_cmd_set_default_wep_key(wl, id, wl->sta_hlid);
 
@@ -168,9 +168,9 @@ u8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct sk_buff *skb)
 
 		hdr = (struct ieee80211_hdr *)skb->data;
 		if (ieee80211_is_mgmt(hdr->frame_control))
-			return WL1271_AP_GLOBAL_HLID;
+			return wl->ap_global_hlid;
 		else
-			return WL1271_AP_BROADCAST_HLID;
+			return wl->ap_bcast_hlid;
 	}
 }
 
@@ -317,17 +317,12 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
 		else
 			rate_idx = ACX_TX_BASIC_RATE;
 	} else {
-		switch (hlid) {
-		case WL1271_AP_GLOBAL_HLID:
+		if (hlid == wl->ap_global_hlid)
 			rate_idx = ACX_TX_AP_MODE_MGMT_RATE;
-			break;
-		case WL1271_AP_BROADCAST_HLID:
+		else if (hlid == wl->ap_bcast_hlid)
 			rate_idx = ACX_TX_AP_MODE_BCST_RATE;
-			break;
-		default:
+		else
 			rate_idx = ac;
-			break;
-		}
 	}
 
 	tx_attr |= rate_idx << TX_HW_ATTR_OFST_RATE_POLICY;

drivers/net/wireless/wl12xx/wl12xx.h

@@ -141,10 +141,15 @@ extern u32 wl12xx_debug_level;
 #define WL12XX_MAX_LINKS           8
 #define WL12XX_INVALID_ROLE_ID     0xff
 #define WL12XX_INVALID_LINK_ID     0xff
+
+/* Defined by FW as 0. Will not be freed or allocated. */
 #define WL12XX_SYSTEM_HLID         0
-#define WL1271_AP_GLOBAL_HLID      0
-#define WL1271_AP_BROADCAST_HLID   1
-#define WL1271_AP_STA_HLID_START   2
+
+/*
+ * TODO: we currently don't support multirole. remove
+ * this constant from the code when we do.
+ */
+#define WL1271_AP_STA_HLID_START   3
 
 /*
  * When in AP-mode, we allow (at least) this number of mem-blocks
@@ -398,6 +403,8 @@ struct wl1271 {
 	u8 system_hlid;
 	u8 sta_hlid;
 	u8 dev_hlid;
+	u8 ap_global_hlid;
+	u8 ap_bcast_hlid;
 
 	unsigned long links_map[BITS_TO_LONGS(WL12XX_MAX_LINKS)];
 	unsigned long roles_map[BITS_TO_LONGS(WL12XX_MAX_ROLES)];