wlcore: track wlvif inside per-link structure

This allows us to pass only the link as a parameter to various functions
and deduce the wlvif. Note that this member will be NULL for global
links.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/ti/wlcore/cmd.c

@@ -326,6 +326,7 @@ int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 	/* take the last "freed packets" value from the current FW status */
 	wl->links[link].prev_freed_pkts =
 			wl->fw_status_2->counters.tx_lnk_free_pkts[link];
+	wl->links[link].wlvif = wlvif;
 	*hlid = link;
 	return 0;
 }
@@ -353,6 +354,7 @@ void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 	 * can purge them.
 	 */
 	wl1271_tx_reset_link_queues(wl, *hlid);
+	wl->links[*hlid].wlvif = NULL;
 
 	*hlid = WL12XX_INVALID_LINK_ID;
 }

drivers/net/wireless/ti/wlcore/wlcore_i.h

@@ -249,6 +249,8 @@ enum wl12xx_vif_flags {
 	WLVIF_FLAG_IN_USE,
 };
 
+struct wl12xx_vif;
+
 struct wl1271_link {
 	/* AP-mode - TX queue per AC in link */
 	struct sk_buff_head tx_queue[NUM_TX_QUEUES];
@@ -261,6 +263,9 @@ struct wl1271_link {
 
 	/* bitmap of TIDs where RX BA sessions are active for this link */
 	u8 ba_bitmap;
+
+	/* The wlvif this link belongs to. Might be null for global links */
+	struct wl12xx_vif *wlvif;
 };
 
 #define WL1271_MAX_RX_FILTERS 5