qcacmn: Add CDP support for resolving RA from DA for ME6

Add support for parsing AST entries to resolve the RA for
multicast enhancement (mode 6) and enabling access of the API to
the higher layers through the use of the CDP framework.

Change-Id: I909bea86b90c22f311484c0b2653dd7623971c24
CRs-Fixed: 2333014

dp/inc/cdp_txrx_me.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -140,6 +140,25 @@ cdp_tx_me_convert_ucast(ol_txrx_soc_handle soc, struct cdp_vdev *vdev,
 			(vdev, wbuf, newmac, newmaccnt);
 }
 
+static inline uint16_t
+cdp_tx_me_find_ast_entry(ol_txrx_soc_handle soc, struct cdp_vdev *vdev,
+			 uint8_t *da_mac_addr, uint8_t *ra_mac_addr)
+{
+	if (!soc || !soc->ops) {
+		QDF_TRACE(QDF_MODULE_ID_CDP, QDF_TRACE_LEVEL_DEBUG,
+				"%s: Invalid Instance", __func__);
+		QDF_BUG(0);
+		return 0;
+	}
+
+	if (!soc->ops->me_ops ||
+	    !soc->ops->me_ops->tx_me_find_ast_entry)
+		return 0;
+
+	return soc->ops->me_ops->tx_me_find_ast_entry(vdev, da_mac_addr,
+						      ra_mac_addr);
+}
+
 /* Should be a function pointer in ol_txrx_osif_ops{} */
 /**
  * @brief notify mcast frame indication from FW.