qcacmn: Add cdp ops for MSCS feature

Add a new cdp datapath ops - mscs_ops for Mirrored
stream classification signalling feature. This function
will be invoked from ECM flow acceleration manager

Change-Id: I749623846395057b6ea8328c881efa8733700b0e

dp/inc/cdp_txrx_mscs.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2020 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
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * @file cdp_txrx_mscs.h
+ * @brief Define the host data path MSCS API functions
+ * called by the host control SW and the OS interface module
+ */
+#ifndef _CDP_TXRX_MSCS_H_
+#define _CDP_TXRX_MSCS_H_
+#include "cdp_txrx_handle.h"
+#ifdef WLAN_SUPPORT_MSCS
+/**
+ * @brief find MSCS enabled peer for this mac address and validate priority
+ * @details
+ *  This function checks if there is a peer for this mac adress with MSCS
+ *  enabled flag set and nbuf priority is valid from user priority bitmap.
+ *
+ * @param peer_mac - mac address of peer
+ * @param nbuf - nbuf pointer
+ * @return - 0 for non error case, 1 for failure
+ */
+static inline int
+cdp_mscs_peer_lookup_n_get_priority(ol_txrx_soc_handle soc,
+	uint8_t *peer_mac,
+	qdf_nbuf_t nbuf)
+{
+	if (!soc || !soc->ops || !soc->ops->mscs_ops) {
+		QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
+				"%s invalid instance", __func__);
+		return 1;
+	}
+
+	if (soc->ops->mscs_ops->mscs_peer_lookup_n_get_priority)
+		soc->ops->mscs_ops->mscs_peer_lookup_n_get_priority(soc,
+						peer_mac, nbuf);
+	return 0;
+}
+#endif
+#endif