nss-packages-qosmio/qca-nss-drv/patches-11.4/0013-backport-12.4.patch

--- a/exports/nss_c2c_rx.h
+++ b/exports/nss_c2c_rx.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2019-2021, 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.
@@ -36,7 +36,7 @@ enum nss_c2c_rx_stats_types {
 						/**< Number of received simple pbufs. */
 	NSS_C2C_RX_STATS_PBUF_SG,		/**< Number of scatter-gather pbufs received. */
 	NSS_C2C_RX_STATS_PBUF_RETURNING,	/**< Number of returning scatter-gather pbufs. */
-	NSS_C2C_RX_STATS_INVAL_DEST,		/**< Number of pbuf enqueue failures because of destination is invalid. */
+	NSS_C2C_RX_STATS_INVAL_DEST,		/**< Number of pbuf enqueue failures because destination is invalid. */
 	NSS_C2C_RX_STATS_MAX,			/**< Maximum message type. */
 };
 
--- a/exports/nss_c2c_tx.h
+++ b/exports/nss_c2c_tx.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2018-2021, 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.
@@ -72,9 +72,9 @@ enum nss_c2c_tx_test_type {
  */
 enum nss_c2c_tx_stats_types {
 	NSS_C2C_TX_STATS_PBUF_SIMPLE = NSS_STATS_NODE_MAX,
-						/**< Number of received simple pbuf. */
-	NSS_C2C_TX_STATS_PBUF_SG,		/**< Number of scatter-gather pbuf received. */
-	NSS_C2C_TX_STATS_PBUF_RETURNING,	/**< Number of returning scatter-gather pbuf. */
+						/**< Number of received simple pbufs. */
+	NSS_C2C_TX_STATS_PBUF_SG,		/**< Number of scatter-gather pbufs received. */
+	NSS_C2C_TX_STATS_PBUF_RETURNING,	/**< Number of returning scatter-gather pbufs. */
 	NSS_C2C_TX_STATS_MAX,			/**< Maximum message type. */
 };
 
--- a/exports/nss_cmn.h
+++ b/exports/nss_cmn.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2014, 2016-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014, 2016-2021, 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.
@@ -27,7 +27,7 @@
  * @{
  */
 
-/*
+/**
  * Interface Number 1 Valid 7 Core 8 Type 16 Index
  */
 typedef int32_t nss_if_num_t;
--- a/exports/nss_gre.h
+++ b/exports/nss_gre.h
@@ -1,6 +1,9 @@
 /*
  ****************************************************************************
  * Copyright (c) 2017-2019, 2021, The Linux Foundation. All rights reserved.
+ *
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. 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.
@@ -101,16 +104,16 @@ enum nss_gre_msg_types {
 };
 
 /**
- * GRE Mode Types
+ * GRE mode types.
  */
 enum nss_gre_mode {
-	NSS_GRE_MODE_TUN,	/**< GRE Tunnel interface. */
-	NSS_GRE_MODE_TAP,	/**< GRE Tap interface. */
+	NSS_GRE_MODE_TUN,	/**< GRE tunnel interface. */
+	NSS_GRE_MODE_TAP,	/**< GRE TAP interface. */
 	NSS_GRE_MODE_MAX	/**< Maxmum GRE mode. */
 };
 
 /**
- * GRE IP Types
+ * GRE IP types.
  */
 enum nss_gre_ip_types {
 	NSS_GRE_IP_IPV4,	/**<  Outer Tunnel is IPV4. */
@@ -168,11 +171,11 @@ enum nss_gre_session_types {
  * GRE create message structure.
  */
 struct nss_gre_config_msg {
-	uint32_t src_ip[4];			/**< Source IPv4 or IPv6 Adddress. */
-	uint32_t dest_ip[4];			/**< Destination IPv4 or IPv6 Adddress. */
+	uint32_t src_ip[4];			/**< Source IPv4 or IPv6 address. */
+	uint32_t dest_ip[4];			/**< Destination IPv4 or IPv6 address. */
 	uint32_t flags;				/**< GRE Flags. */
-	uint32_t ikey;				/**< GRE rx KEY.*/
-	uint32_t okey;				/**< GRE tx KEY. */
+	uint32_t ikey;				/**< GRE Rx key.*/
+	uint32_t okey;				/**< GRE Tx key. */
 	uint32_t mode;				/**< GRE TUN or TAP. */
 	uint32_t ip_type;			/**< IPv4 or IPv6 type. */
 	uint32_t next_node_if_num;		/**< To whom to forward packets. */
@@ -185,7 +188,7 @@ struct nss_gre_config_msg {
 };
 
 /**
- * GRE link up message structure
+ * GRE link up message structure.
  */
 struct nss_gre_linkup_msg {
 	int if_number;			/**< Interface number. */
@@ -202,11 +205,11 @@ struct nss_gre_linkdown_msg {
  * GRE deconfig message structure
  */
 struct nss_gre_deconfig_msg {
-	int if_number;			/**< Interface number */
+	int if_number;			/**< Interface number. */
 };
 
 /**
- * GRE session statistics message
+ * GRE session statistics message.
  */
 struct nss_gre_session_stats_msg {
 	struct nss_cmn_node_stats node_stats;		/**< Common node statistics. */
@@ -214,7 +217,7 @@ struct nss_gre_session_stats_msg {
 };
 
 /**
- * GRE base statistics message
+ * GRE base statistics message.
  */
 struct nss_gre_base_stats_msg {
 	uint32_t stats[NSS_GRE_BASE_DEBUG_MAX];		/**< Base debug statistics. */
@@ -241,10 +244,10 @@ struct nss_gre_session_stats_notificatio
 
 /**
  * nss_gre_msg
- *	Message structure to send/receive GRE messages
+ *	Message structure to send/receive GRE messages.
  */
 struct nss_gre_msg {
-	struct nss_cmn_msg cm;					/**< Common message header */
+	struct nss_cmn_msg cm;					/**< Common message header. */
 
 	/**
 	 * Payload of a GRE message.
@@ -304,7 +307,7 @@ extern nss_tx_status_t nss_gre_tx_msg_sy
 
 /**
  * nss_gre_tx_buf
- *	Sends packet to the NSS
+ *	Sends a packet to the NSS.
  *
  * @datatypes
  * nss_ctx_instance \n
@@ -445,7 +448,17 @@ typedef void (*nss_gre_pkt_callback_t)(s
  * @return
  * None.
  */
+#ifdef NSS_DRV_GRE_ENABLE
 extern void nss_gre_register_pkt_callback(nss_gre_pkt_callback_t cb);
+#else
+static inline void nss_gre_register_pkt_callback(nss_gre_pkt_callback_t cb)
+{
+	/*
+	 * Dummy registration function for external modules when GRE
+	 * is disabled
+	 */
+}
+#endif
 
 /**
  * nss_gre_unregister_pkt_callback
@@ -457,7 +470,17 @@ extern void nss_gre_register_pkt_callbac
  * @return
  * None.
  */
+#ifdef NSS_DRV_GRE_ENABLE
 extern void nss_gre_unregister_pkt_callback(void);
+#else
+static inline void nss_gre_unregister_pkt_callback(void)
+{
+	/*
+	 * Dummy registration function for external modules when GRE
+	 * is disabled
+	 */
+}
+#endif
 
 /**
  * nss_gre_stats_unregister_notifier
--- a/exports/nss_gre_redir.h
+++ b/exports/nss_gre_redir.h
@@ -302,7 +302,7 @@ struct nss_gre_redir_stats_sync_msg {
 
 /**
  * nss_gre_redir_tun_stats
- *	GRE redirect statistics to accumulate all the stats values.
+ *	GRE redirect statistics to accumulate all stats values.
  */
 struct nss_gre_redir_tun_stats {
 	uint64_t rx_packets;		/**< Number of packets received. */
--- a/exports/nss_if.h
+++ b/exports/nss_if.h
@@ -321,6 +321,23 @@ extern struct nss_ctx_instance *nss_if_r
 extern nss_tx_status_t nss_if_tx_buf(struct nss_ctx_instance *nss_ctx, struct sk_buff *os_buf, uint32_t if_num);
 
 /**
+ * nss_if_tx_msg_with_size
+ *	Sends a message to the NSS interface.
+ *
+ * @datatypes
+ * nss_ctx_instance \n
+ * nss_if_msg
+ *
+ * @param[in,out] nss_ctx  Pointer to the NSS context.
+ * @param[in]     nim      Pointer to the NSS interface message.
+ * @param[in]     size     Total message buffer size.
+ *
+ * @return
+ * Status of the Tx operation.
+ */
+nss_tx_status_t nss_if_tx_msg_with_size(struct nss_ctx_instance *nss_ctx, struct nss_if_msg *nim, uint32_t size);
+
+/**
  * nss_if_tx_msg
  *	Sends a message to the NSS interface.
  *
@@ -338,7 +355,7 @@ nss_tx_status_t nss_if_tx_msg(struct nss
 
 /**
  * nss_if_msg_sync
- *	Sends a message to the NSS interface and wait for the response.
+ *	Sends a message to the NSS interface and waits for the response.
  *
  * @datatypes
  * nss_ctx_instance \n
@@ -385,7 +402,7 @@ nss_tx_status_t nss_if_reset_nexthop(str
 
 /**
  * nss_if_change_mtu
- *	Change the MTU of the interface.
+ *	Changes the MTU of the interface.
  *
  * @datatypes
  * nss_ctx_instance
@@ -401,7 +418,7 @@ nss_tx_status_t nss_if_change_mtu(struct
 
 /**
  * nss_if_change_mac_addr
- *	Change the MAC address of the interface.
+ *	Changes the MAC address of the interface.
  *
  * @datatypes
  * nss_ctx_instance
@@ -417,7 +434,7 @@ nss_tx_status_t nss_if_change_mac_addr(s
 
 /**
  * nss_if_vsi_unassign
- *	Detach the VSI ID from the given interface.
+ *	Detaches the VSI ID from the given interface.
  *
  * @datatypes
  * nss_ctx_instance
@@ -433,7 +450,7 @@ nss_tx_status_t nss_if_vsi_unassign(stru
 
 /**
  * nss_if_vsi_assign
- *	Attach the VSI ID to the given interface.
+ *	Attaches the VSI ID to the given interface.
  *
  * @datatypes
  * nss_ctx_instance
--- a/exports/nss_ipv4.h
+++ b/exports/nss_ipv4.h
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. 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
@@ -55,16 +58,16 @@ struct nss_ipv4_create {
 				/**< Source interface number (virtual or physical). */
 	int32_t dest_interface_num;
 				/**< Destination interface number (virtual or physical). */
-	int32_t protocol;	/**< L4 protocol (e.g., TCP or UDP). */
-	uint32_t flags;		/**< Flags (if any) associated with this rule. */
+	int32_t protocol;	/**< L4 protocol, e.g., TCP or UDP. */
+	uint32_t flags;		/**< Flags associated with this rule. */
 	uint32_t from_mtu;	/**< MTU of the incoming interface. */
 	uint32_t to_mtu;	/**< MTU of the outgoing interface. */
 	uint32_t src_ip;	/**< Source IP address. */
-	int32_t src_port;	/**< Source L4 port (e.g., TCP or UDP port). */
+	int32_t src_port;	/**< Source L4 port, e.g., TCP or UDP port. */
 	uint32_t src_ip_xlate;	/**< Translated source IP address (used with SNAT). */
 	int32_t src_port_xlate;	/**< Translated source L4 port (used with SNAT). */
 	uint32_t dest_ip;	/**< Destination IP address. */
-	int32_t dest_port;	/**< Destination L4 port (e.g., TCP or UDP port). */
+	int32_t dest_port;	/**< Destination L4 port, e.g., TCP or UDP port. */
 	uint32_t dest_ip_xlate;
 			/**< Translated destination IP address (used with DNAT). */
 	int32_t dest_port_xlate;
@@ -82,7 +85,7 @@ struct nss_ipv4_create {
 	uint32_t flow_end;		/**< TCP window end. */
 	uint32_t flow_max_end;		/**< TCP window maximum end. */
 	uint32_t flow_pppoe_if_exist;
-			/**< Flow direction: PPPoE interface exist flag. */
+			/**< Flow direction: PPPoE interface existence flag. */
 	int32_t flow_pppoe_if_num;
 			/**< Flow direction: PPPoE interface number. */
 	uint16_t ingress_vlan_tag;	/**< Ingress VLAN tag expected for this flow. */
@@ -100,7 +103,7 @@ struct nss_ipv4_create {
 			/**< Return direction: PPPoE interface number. */
 	uint16_t egress_vlan_tag;	/**< Egress VLAN tag expected for this flow. */
 	uint8_t spo_needed;		/**< Indicates whether SPO is required. */
-	uint32_t param_a0;		/**< Custom parameter 0. */
+	struct net_device *top_ndev;	/**< Netdevice associated with the top interface. */
 	uint32_t param_a1;		/**< Custom parameter 1. */
 	uint32_t param_a2;		/**< Custom parameter 2. */
 	uint32_t param_a3;		/**< Custom parameter 3. */
@@ -131,9 +134,9 @@ struct nss_ipv4_create {
 struct nss_ipv4_destroy {
 	int32_t protocol;	/**< L4 protocol ID. */
 	uint32_t src_ip;	/**< Source IP address. */
-	int32_t src_port;	/**< Source L4 port (e.g., TCP or UDP port). */
+	int32_t src_port;	/**< Source L4 port, e.g., TCP or UDP port. */
 	uint32_t dest_ip;	/**< Destination IP address. */
-	int32_t dest_port;	/**< Destination L4 port (e.g., TCP or UDP port). */
+	int32_t dest_port;	/**< Destination L4 port, e.g., TCP or UDP port. */
 };
 
 /**
@@ -900,6 +903,7 @@ enum nss_ipv4_exception_events {
 	NSS_IPV4_EXCEPTION_EVENT_ICMP_IPV4_GRE_HEADER_INCOMPLETE,
 	NSS_IPV4_EXCEPTION_EVENT_ICMP_IPV4_ESP_HEADER_INCOMPLETE,
 	NSS_IPV4_EXCEPTION_EVENT_EMESH_PRIO_MISMATCH,
+	NSS_IPV4_EXCEPTION_EVENT_MC_UCAST_DMAC,
 	NSS_IPV4_EXCEPTION_EVENT_MAX
 };
 
@@ -956,10 +960,10 @@ struct nss_ipv4_node_sync {
 			/**< Number of multicast connection flushes. */
 
 	uint32_t ipv4_connection_create_invalid_mirror_ifnum;
-			/**< Number of create request failed with an invalid mirror interface number. */
+			/**< Number of failed create requests with an invalid mirror interface number. */
 
 	uint32_t ipv4_connection_create_invalid_mirror_iftype;
-			/**< Number of create request failed with an invalid mirror interface type. */
+			/**< Number of failed create requests with an invalid mirror interface type. */
 
 	uint32_t ipv4_mirror_failures;
 			/**< Mirror packet failed. */
--- a/exports/nss_ipv6.h
+++ b/exports/nss_ipv6.h
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. 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
@@ -82,14 +85,14 @@ struct nss_ipv6_create {
 			/**< Source interface number (virtual or physical). */
 	int32_t dest_interface_num;
 			/**< Destination interface number (virtual or physical). */
-	int32_t protocol;	/**< L4 protocol (e.g., TCP or UDP). */
-	uint32_t flags;		/**< Flags (if any) associated with this rule. */
+	int32_t protocol;	/**< L4 protocol, e.g., TCP or UDP,. */
+	uint32_t flags;		/**< Flags associated with this rule. */
 	uint32_t from_mtu;	/**< MTU of the incoming interface. */
 	uint32_t to_mtu;	/**< MTU of the outgoing interface. */
 	uint32_t src_ip[4];	/**< Source IP address. */
-	int32_t src_port;	/**< Source L4 port (e.g., TCP or UDP port). */
+	int32_t src_port;	/**< Source L4 port, e.g., TCP or UDP port. */
 	uint32_t dest_ip[4];	/**< Destination IP address. */
-	int32_t dest_port;	/**< Destination L4 port (e.g., TCP or UDP port). */
+	int32_t dest_port;	/**< Destination L4 port, e.g., TCP or UDP port. */
 	uint8_t src_mac[ETH_ALEN];	/**< Source MAC address. */
 	uint8_t dest_mac[ETH_ALEN];	/**< Destination MAC address. */
 	uint8_t flow_window_scale;	/**< Window scaling factor (TCP). */
@@ -111,7 +114,7 @@ struct nss_ipv6_create {
 	uint32_t return_max_end;
 			/**< Maximum end for the return direction. */
 	uint32_t return_pppoe_if_exist;
-			/**< Return direction: PPPoE interface exist flag. */
+			/**< Return direction: PPPoE interface existence flag. */
 	int32_t return_pppoe_if_num;
 			/**< Return direction: PPPoE interface number. */
 	uint16_t egress_vlan_tag;	/**< Egress VLAN tag expected for this flow. */
@@ -132,6 +135,7 @@ struct nss_ipv6_create {
 					/**< Egress VLAN tag expected for this flow. */
 	uint8_t flow_dscp;		/**< IP DSCP value for flow direction. */
 	uint8_t return_dscp;		/**< IP DSCP value for the return direction. */
+	struct net_device *top_ndev;	/**< Netdevice associated with the top interface. */
 };
 
 /**
@@ -139,11 +143,11 @@ struct nss_ipv6_create {
  *	Information for an IPv6 flow or connection destroy rule.
  */
 struct nss_ipv6_destroy {
-	int32_t protocol;	/**< L4 protocol (e.g., TCP or UDP). */
+	int32_t protocol;	/**< L4 protocol, e.g., TCP or UDP. */
 	uint32_t src_ip[4];	/**< Source IP address. */
-	int32_t src_port;	/**< Source L4 port (e.g., TCP or UDP port). */
+	int32_t src_port;	/**< Source L4 port, e.g., TCP or UDP port. */
 	uint32_t dest_ip[4];	/**< Destination IP address. */
-	int32_t dest_port;	/**< Destination L4 port (e.g., TCP or UDP port). */
+	int32_t dest_port;	/**< Destination L4 port, e.g., TCP or UDP port. */
 };
 
 /**
@@ -951,10 +955,10 @@ struct nss_ipv6_node_sync {
 			/**< Number of multicast connection flushes. */
 
 	uint32_t ipv6_connection_create_invalid_mirror_ifnum;
-			/**< Number of create request failed with an invalid mirror interface number. */
+			/**< Number of failed create requests with an invalid mirror interface number. */
 
 	uint32_t ipv6_connection_create_invalid_mirror_iftype;
-			/**< Number of create request failed with an invalid mirror interface type. */
+			/**< Number of failed create requests with an invalid mirror interface type. */
 
 	uint32_t ipv6_mirror_failures;
 			/**< Mirror packet failed. */
--- a/exports/nss_lso_rx.h
+++ b/exports/nss_lso_rx.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2019-2021, 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
@@ -17,7 +17,7 @@
  */
 
 /*
- * nss_lso_rx.h
+ * @file nss_lso_rx.h
  *	NSS driver LSO (Large Send Offload) Rx header file.
  */
 
--- a/exports/nss_map_t.h
+++ b/exports/nss_map_t.h
@@ -36,14 +36,18 @@
  */
 #define NSS_MAX_MAP_T_DYNAMIC_INTERFACES 4
 
+/**
+ * MAP-T metadata flag.
+ */
 #define NSS_MAPT_MDATA_FLAG_DF_BIT  (1 << 0)
 
-/*
- * mapt meta data
+/**
+ * nss_map_t_mdata
+ *         MAP-T metadata
  */
 struct nss_map_t_mdata {
-	uint16_t flags;
-	uint16_t res[6];
+	uint16_t flags;				/**< Metadata flags. */
+	uint16_t res[6];			/**< Reserved for future use. */
 };
 
 /**
--- a/exports/nss_virt_if.h
+++ b/exports/nss_virt_if.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2014-2017, 2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2017, 2019, 2021, 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.
@@ -93,8 +93,8 @@ struct nss_virt_if_interface_stats {
  *	Virtual interface statistics received from the NSS.
  */
 struct nss_virt_if_stats {
-	struct nss_virt_if_base_node_stats base_stats;
-	struct nss_virt_if_interface_stats if_stats;
+	struct nss_virt_if_base_node_stats base_stats;	/**< Virtual interface statistics of NSS base node. */
+	struct nss_virt_if_interface_stats if_stats;	/**< Virtual interface statistics of each pair of interfaces. */
 };
 
 /**
--- a/nss_c2c_rx.c
+++ b/nss_c2c_rx.c
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. 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
@@ -107,7 +110,7 @@ void nss_c2c_rx_register_handler(struct
 
 	if (nss_ctx->id == NSS_CORE_0) {
 		nss_c2c_rx_stats_dentry_create();
+		nss_c2c_rx_strings_dentry_create();
 	}
-	nss_c2c_rx_strings_dentry_create();
 }
 EXPORT_SYMBOL(nss_c2c_rx_register_handler);
--- a/nss_c2c_tx.c
+++ b/nss_c2c_tx.c
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. 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
@@ -142,8 +145,8 @@ void nss_c2c_tx_register_handler(struct
 
 	if (nss_ctx->id == NSS_CORE_0) {
 		nss_c2c_tx_stats_dentry_create();
+		nss_c2c_tx_strings_dentry_create();
 	}
-	nss_c2c_tx_strings_dentry_create();
 }
 EXPORT_SYMBOL(nss_c2c_tx_register_handler);
 
--- a/nss_core.c
+++ b/nss_core.c
@@ -522,7 +522,7 @@ static void nss_get_ddr_info(struct nss_
 		const __be32 *ppp = (__be32 *)of_get_property(node, "reg", &n_items);
 
 		n_items /= sizeof(ppp[0]);
-		nss_info_always("node size %d # items %d\n",
+		nss_info("node size %d # items %d\n",
 				of_n_size_cells(node), n_items);
 		if (ppp) {
 			if (n_items & 1) {	/* case 1 */
@@ -549,7 +549,7 @@ case3:
 				n_items = 0;
 			if (n_items) {
 				of_node_put(node);
-				nss_info_always("%s: %x %u (avl %u) items %d active_cores %d\n",
+				nss_info("%s: %x %u (avl %u) items %d active_cores %d\n",
 					name, mmu->start_address, mmu->ddr_size,
 					avail_ddr, n_items, mmu->num_active_cores);
 				/*
@@ -886,7 +886,7 @@ static inline void nss_core_handle_buffe
 		/*
 		 * linearize or free if requested.
 		 */
-	 	if (unlikely(skb_is_nonlinear(nbuf))) {
+		if (unlikely(skb_is_nonlinear(nbuf))) {
 			if (nss_core_skb_needs_linearize(nbuf, ndev->features) && __skb_linearize(nbuf)) {
 				dev_kfree_skb_any(nbuf);
 				return;
@@ -944,11 +944,11 @@ static inline void nss_core_handle_ext_b
 	ext_cb = subsys_dp_reg->ext_cb;
 	if (likely(ext_cb) && likely(ndev)) {
 
-	 	if (unlikely(skb_is_nonlinear(nbuf))) {
+		if (unlikely(skb_is_nonlinear(nbuf))) {
 			if (nss_core_skb_needs_linearize(nbuf, ndev->features) && __skb_linearize(nbuf)) {
 				/*
-			 	* We needed to linearize, but __skb_linearize() failed. So free the nbuf.
-			 	*/
+				* We needed to linearize, but __skb_linearize() failed. So free the nbuf.
+				*/
 				dev_kfree_skb_any(nbuf);
 				return;
 			}
@@ -1685,6 +1685,7 @@ static void nss_core_init_nss(struct nss
 {
 	struct nss_top_instance *nss_top;
 	int ret;
+	int i;
 
 	NSS_CORE_DMA_CACHE_MAINT((void *)if_map, sizeof(*if_map), DMA_FROM_DEVICE);
 	NSS_CORE_DSB();
@@ -1700,6 +1701,9 @@ static void nss_core_init_nss(struct nss
 #ifdef NSS_DRV_C2C_ENABLE
 	nss_ctx->c2c_start = nss_ctx->meminfo_ctx.c2c_start_dma;
 #endif
+	for (i = 0; i < NSS_H2N_DESC_RING_NUM; i++) {
+		nss_ctx->h2n_desc_rings[i].nss_index_local = 0;
+	}
 
 	nss_top = nss_ctx->nss_top;
 	spin_lock_bh(&nss_top->lock);
@@ -1723,12 +1727,15 @@ static void nss_core_init_nss(struct nss
 		 * Configure the maximum number of IPv4/IPv6
 		 * connections supported by the accelerator.
 		 */
+#ifdef NSS_DRV_IPV4_ENABLE
 		nss_ipv4_conn_cfg = max_ipv4_conn;
+		nss_ipv4_update_conn_count(max_ipv4_conn);
+#endif
+
 #ifdef NSS_DRV_IPV6_ENABLE
 		nss_ipv6_conn_cfg = max_ipv6_conn;
 		nss_ipv6_update_conn_count(max_ipv6_conn);
 #endif
-		nss_ipv4_update_conn_count(max_ipv4_conn);
 
 #ifdef NSS_MEM_PROFILE_LOW
 		/*
@@ -3014,48 +3021,52 @@ int32_t nss_core_send_buffer(struct nss_
 	 * Take a lock for queue
 	 */
 	spin_lock_bh(&h2n_desc_ring->lock);
-
-	/*
-	 * We need to work out if there's sufficent space in our transmit descriptor
-	 * ring to place all the segments of a nbuf.
-	 */
-	NSS_CORE_DMA_CACHE_MAINT((void *)&if_map->h2n_nss_index[qid], sizeof(uint32_t), DMA_FROM_DEVICE);
-	NSS_CORE_DSB();
-	nss_index = if_map->h2n_nss_index[qid];
-
+	nss_index = h2n_desc_ring->nss_index_local;
 	hlos_index = h2n_desc_ring->hlos_index;
-
 	count = ((nss_index - hlos_index - 1) + size) & (mask);
 
+	/*
+	 * If local index shows that there is not enough space in the ring,
+	 * Read the actual index from the consumer's generation (NSS-FW).
+	 */
 	if (unlikely(count < (segments + 1))) {
 		/*
-		 * NOTE: tx_q_full_cnt and TX_STOPPED flags will be used
-		 *	when we will add support for DESC Q congestion management
-		 *	in future
-		 */
-		h2n_desc_ring->tx_q_full_cnt++;
-		h2n_desc_ring->flags |= NSS_H2N_DESC_RING_FLAGS_TX_STOPPED;
-		spin_unlock_bh(&h2n_desc_ring->lock);
-		nss_warning("%px: Data/Command Queue full reached", nss_ctx);
+		 * We need to work out if there's sufficent space in our transmit descriptor
+		 * ring to place all the segments of a nbuf.
+		 */
+		NSS_CORE_DMA_CACHE_MAINT((void *)&if_map->h2n_nss_index[qid], sizeof(uint32_t), DMA_FROM_DEVICE);
+		NSS_CORE_DSB();
+		nss_index = if_map->h2n_nss_index[qid];
+		h2n_desc_ring->nss_index_local = nss_index;
+		count = ((nss_index - hlos_index - 1) + size) & (mask);
+		if (unlikely(count < (segments + 1))) {
+			/*
+			 * NOTE: tx_q_full_cnt and TX_STOPPED flags will be used
+			 *	when we will add support for DESC Q congestion management
+			 *	in future
+			 */
+			h2n_desc_ring->tx_q_full_cnt++;
+			h2n_desc_ring->flags |= NSS_H2N_DESC_RING_FLAGS_TX_STOPPED;
+			spin_unlock_bh(&h2n_desc_ring->lock);
+			nss_warning("%px: Data/Command Queue full reached", nss_ctx);
 
 #if (NSS_PKT_STATS_ENABLED == 1)
-		if (nss_ctx->id == NSS_CORE_0) {
-			NSS_PKT_STATS_INC(&nss_ctx->nss_top->stats_drv[NSS_DRV_STATS_TX_QUEUE_FULL_0]);
-		} else if (nss_ctx->id == NSS_CORE_1) {
-			NSS_PKT_STATS_INC(&nss_ctx->nss_top->stats_drv[NSS_DRV_STATS_TX_QUEUE_FULL_1]);
-		} else {
-			nss_warning("%px: Invalid nss core: %d\n", nss_ctx, nss_ctx->id);
-		}
+			if (nss_ctx->id == NSS_CORE_0) {
+				NSS_PKT_STATS_INC(&nss_ctx->nss_top->stats_drv[NSS_DRV_STATS_TX_QUEUE_FULL_0]);
+			} else if (nss_ctx->id == NSS_CORE_1) {
+				NSS_PKT_STATS_INC(&nss_ctx->nss_top->stats_drv[NSS_DRV_STATS_TX_QUEUE_FULL_1]);
+			} else {
+				nss_warning("%px: Invalid nss core: %d\n", nss_ctx, nss_ctx->id);
+			}
 #endif
+			/*
+			 * Enable de-congestion interrupt from NSS
+			 */
+			nss_hal_enable_interrupt(nss_ctx, nss_ctx->int_ctx[0].shift_factor, NSS_N2H_INTR_TX_UNBLOCKED);
 
-		/*
-		 * Enable de-congestion interrupt from NSS
-		 */
-		nss_hal_enable_interrupt(nss_ctx, nss_ctx->int_ctx[0].shift_factor, NSS_N2H_INTR_TX_UNBLOCKED);
-
-		return NSS_CORE_STATUS_FAILURE_QUEUE;
+			return NSS_CORE_STATUS_FAILURE_QUEUE;
+		}
 	}
-
 	desc = &desc_ring[hlos_index];
 
 	/*
--- a/nss_core.h
+++ b/nss_core.h
@@ -389,6 +389,7 @@ struct hlos_n2h_desc_ring {
 struct hlos_h2n_desc_rings {
 	struct h2n_desc_if_instance desc_ring;	/* Descriptor ring */
 	uint32_t hlos_index;
+	uint32_t nss_index_local;		/* Index number for the next descriptor (NSS owned) */
 	spinlock_t lock;			/* Lock to save from simultaneous access */
 	uint32_t flags;				/* Flags */
 	uint64_t tx_q_full_cnt;			/* Descriptor queue full count */
--- a/nss_coredump.c
+++ b/nss_coredump.c
@@ -1,6 +1,8 @@
 /*
  **************************************************************************
  * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. 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.
@@ -47,7 +49,8 @@ static struct workqueue_struct *coredump
  */
 static void nss_coredump_wait(struct work_struct *work)
 {
-	panic("did not get all coredump finished signals\n");
+	if (!(nss_cmd_buf.coredump & 0xFFFFFFFE))
+		panic("did not get all coredump finished signals\n");
 }
 
 /*
--- a/nss_crypto_cmn.c
+++ b/nss_crypto_cmn.c
@@ -226,6 +226,12 @@ nss_tx_status_t nss_crypto_cmn_tx_msg_sy
 	 * further details read Linux/Documentation/memory-barrier.txt
 	 */
 	smp_rmb();
+
+	if (msg->cm.response != NSS_CMN_RESPONSE_ACK) {
+		up(&pvt->sem);
+		return NSS_TX_FAILURE;
+	}
+
 	up(&pvt->sem);
 
 	return NSS_TX_SUCCESS;
--- a/nss_dynamic_interface.c
+++ b/nss_dynamic_interface.c
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. 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
@@ -320,7 +323,9 @@ nss_tx_status_t nss_dynamic_interface_de
 void nss_dynamic_interface_register_handler(struct nss_ctx_instance *nss_ctx)
 {
 	nss_core_register_handler(nss_ctx, NSS_DYNAMIC_INTERFACE, nss_dynamic_interface_handler, NULL);
-	nss_dynamic_interface_stats_dentry_create();
+	if (nss_ctx->id == NSS_CORE_0) {
+		nss_dynamic_interface_stats_dentry_create();
+	}
 }
 
 /*
--- a/nss_hal/ipq806x/nss_hal_pvt.c
+++ b/nss_hal/ipq806x/nss_hal_pvt.c
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2013, 2015-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. 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
@@ -978,12 +981,12 @@ static int __nss_hal_clock_configure(str
 	 * Check if turbo is supported
 	 */
 	if (npd->turbo_frequency) {
-		nss_info_always("nss_driver - Turbo Support %d\n", npd->turbo_frequency);
+		nss_info("nss_driver - Turbo Support %d\n", npd->turbo_frequency);
 #if (NSS_PM_SUPPORT == 1)
 		nss_pm_set_turbo();
 #endif
 	} else {
-		nss_info_always("nss_driver - Turbo No Support %d\n", npd->turbo_frequency);
+		nss_info("nss_driver - Turbo No Support %d\n", npd->turbo_frequency);
 	}
 
 	/*
@@ -1082,26 +1085,26 @@ clk_complete:
 		}
 	}
 
-	nss_info_always("Supported Frequencies - ");
+	nss_info("Supported Frequencies - ");
 	for (i = 0; i < NSS_FREQ_MAX_SCALE; i++) {
 		if (nss_runtime_samples.freq_scale[i].frequency == NSS_FREQ_110) {
-			nss_info_always("110Mhz ");
+			nss_info("110Mhz ");
 		} else if (nss_runtime_samples.freq_scale[i].frequency == NSS_FREQ_275) {
-			nss_info_always("275Mhz ");
+			nss_info("275Mhz ");
 		} else if (nss_runtime_samples.freq_scale[i].frequency == NSS_FREQ_550) {
-			nss_info_always("550Mhz ");
+			nss_info("550Mhz ");
 		} else if (nss_runtime_samples.freq_scale[i].frequency == NSS_FREQ_600) {
-			nss_info_always("600Mhz ");
+			nss_info("600Mhz ");
 		} else if (nss_runtime_samples.freq_scale[i].frequency == NSS_FREQ_733) {
-			nss_info_always("733Mhz ");
+			nss_info("733Mhz ");
 		} else if (nss_runtime_samples.freq_scale[i].frequency == NSS_FREQ_800) {
-			nss_info_always("800Mhz ");
+			nss_info("800Mhz ");
 		} else {
 			nss_info_always("Error\nNo Table/Invalid Frequency Found - Loading Old Tables -");
 			return -EFAULT;
 		}
 	}
-	nss_info_always("\n");
+	nss_info("\n");
 
 	/*
 	 * Set default frequency
--- a/nss_hal/nss_hal.c
+++ b/nss_hal/nss_hal.c
@@ -41,7 +41,6 @@
 /*
  * Macros
  */
-#define MIN_IMG_SIZE (64*1024)
 #define NSS_AP0_IMAGE "qca-nss0.bin"
 #define NSS_AP1_IMAGE "qca-nss1.bin"
 
@@ -62,7 +61,7 @@ int nss_hal_firmware_load(struct nss_ctx
 	} else if (nss_ctx->id == 1) {
 		rc = firmware_request_nowarn(&nss_fw, NSS_AP1_IMAGE, &(nss_dev->dev));
 	} else {
-		nss_warning("%px: Invalid nss dev: %d\n", nss_ctx, nss_ctx->id);
+		nss_warning("%px: Invalid nss dev: %d", nss_ctx, nss_ctx->id);
 		return -EINVAL;
 	}
 
@@ -74,10 +73,6 @@ int nss_hal_firmware_load(struct nss_ctx
 		return rc;
 	}
 
-	if (nss_fw->size < MIN_IMG_SIZE) {
-		nss_info_always("%px: nss firmware is truncated, size:%d", nss_ctx, (int)nss_fw->size);
-		return rc;
-	}
 
 	load_mem = ioremap(npd->load_addr, nss_fw->size);
 	if (!load_mem) {
@@ -86,7 +81,7 @@ int nss_hal_firmware_load(struct nss_ctx
 		return rc;
 	}
 
-	nss_info_always("nss_driver - fw of size %d  bytes copied to load addr: %x, nss_id : %d\n", (int)nss_fw->size, npd->load_addr, nss_dev->id);
+	nss_info("nss_driver - fw of size %d  bytes copied to load addr: %x, nss_id : %d\n", (int)nss_fw->size, npd->load_addr, nss_dev->id);
 	memcpy_toio(load_mem, nss_fw->data, nss_fw->size);
 	release_firmware(nss_fw);
 	iounmap(load_mem);
@@ -210,14 +205,14 @@ int nss_hal_probe(struct platform_device
 	if (nss_top_main.nss_hal_common_init_done == false) {
 		err = nss_top->hal_ops->common_reset(nss_dev);
 		if (err) {
-			nss_info_always("NSS HAL common init failed\n");
+			nss_info_always("NSS HAL common init failed");
 			return -EFAULT;
 		}
 	}
 
 #if (NSS_DT_SUPPORT == 1)
 	if (!nss_dev->dev.of_node) {
-		pr_err("nss-driver: Device tree not available\n");
+		pr_err("nss-driver: Device tree not available");
 		return -ENODEV;
 	}
 
@@ -242,27 +237,27 @@ int nss_hal_probe(struct platform_device
 	 */
 	nss_ctx->dev = &nss_dev->dev;
 
-	nss_info("%px: NSS_DEV_ID %s\n", nss_ctx, dev_name(&nss_dev->dev));
+	nss_info("%px: NSS_DEV_ID %s", nss_ctx, dev_name(&nss_dev->dev));
 
 	/*
 	 * Do firmware load from nss-drv if required
 	 */
 	err = nss_top->hal_ops->firmware_load(nss_ctx, nss_dev, npd);
 	if (err) {
-		nss_info_always("%px: firmware load from driver failed\n", nss_ctx);
+		nss_info_always("%px: firmware load from driver failed", nss_ctx);
 		goto err_init;
 	}
 
 	err = nss_top->hal_ops->clock_configure(nss_ctx, nss_dev, npd);
 	if (err) {
-		nss_info_always("%px: clock configure failed\n", nss_ctx);
+		nss_info_always("%px: clock configure failed", nss_ctx);
 		goto err_init;
 	}
 
 	/*
 	 * Get load address of NSS firmware
 	 */
-	nss_info("%px: Setting NSS%d Firmware load address to %x\n", nss_ctx, nss_ctx->id, npd->load_addr);
+	nss_info("%px: Setting NSS%d Firmware load address to %x", nss_ctx, nss_ctx->id, npd->load_addr);
 	nss_top->nss[nss_ctx->id].load = npd->load_addr;
 
 	/*
@@ -298,7 +293,7 @@ int nss_hal_probe(struct platform_device
 			nss_ctx, nss_ctx->vphys, nss_ctx->vmap, nss_ctx->nphys, nss_ctx->nmap);
 
 	if (!nss_meminfo_init(nss_ctx)) {
-		nss_info_always("%px: meminfo init failed\n", nss_ctx);
+		nss_info_always("%px: meminfo init failed", nss_ctx);
 		err = -EFAULT;
 		goto err_init;
 	}
@@ -360,18 +355,25 @@ int nss_hal_probe(struct platform_device
 	}
 #endif
 
+#ifdef NSS_DRV_IPV4_ENABLE
 	if (npd->ipv4_enabled == NSS_FEATURE_ENABLED) {
 		nss_top->ipv4_handler_id = nss_dev->id;
 		nss_ipv4_register_handler();
+#endif
 
 #ifdef NSS_DRV_EDMA_ENABLE
 		nss_top->edma_handler_id = nss_dev->id;
 		nss_edma_register_handler();
 #endif
+
+#ifdef NSS_DRV_ETH_RX_ENABLE
 		nss_eth_rx_register_handler(nss_ctx);
+#endif
+
 #ifdef NSS_DRV_LAG_ENABLE
 		nss_lag_register_handler();
 #endif
+
 #ifdef NSS_DRV_TRUSTSEC_ENABLE
 		nss_top->trustsec_tx_handler_id = nss_dev->id;
 		nss_trustsec_tx_register_handler();
@@ -466,10 +468,12 @@ int nss_hal_probe(struct platform_device
 	}
 #endif
 
+#ifdef NSS_DRV_PPPOE_ENABLE
 	if (npd->pppoe_enabled == NSS_FEATURE_ENABLED) {
 		nss_top->pppoe_handler_id = nss_dev->id;
 		nss_pppoe_register_handler();
 	}
+#endif
 
 #ifdef NSS_DRV_PPE_ENABLE
 	if (npd->ppe_enabled == NSS_FEATURE_ENABLED) {
@@ -564,6 +568,7 @@ int nss_hal_probe(struct platform_device
 	}
 #endif
 
+#ifdef NSS_DRV_WIFIOFFLOAD_ENABLE
 	if (npd->wifioffload_enabled == NSS_FEATURE_ENABLED) {
 		nss_top->wifi_handler_id = nss_dev->id;
 		nss_top->dynamic_interface_table[NSS_DYNAMIC_INTERFACE_TYPE_VAP] = nss_dev->id;
@@ -591,6 +596,7 @@ int nss_hal_probe(struct platform_device
 		 */
 		nss_wifili_thread_scheme_db_init(nss_dev->id);
 	}
+#endif
 
 #ifdef NSS_DRV_OAM_ENABLE
 	if (npd->oam_enabled == NSS_FEATURE_ENABLED) {
@@ -607,11 +613,13 @@ int nss_hal_probe(struct platform_device
 	}
 #endif
 
+#ifdef NSS_DRV_VLAN_ENABLE
 	if (npd->vlan_enabled == NSS_FEATURE_ENABLED) {
 		nss_top->vlan_handler_id = nss_dev->id;
 		nss_top->dynamic_interface_table[NSS_DYNAMIC_INTERFACE_TYPE_VLAN] = nss_dev->id;
 		nss_vlan_register_handler();
 	}
+#endif
 
 #ifdef NSS_DRV_QVPN_ENABLE
 #if defined(NSS_HAL_IPQ807x_SUPPORT) || defined(NSS_HAL_IPQ60XX_SUPPORT)
@@ -712,7 +720,9 @@ int nss_hal_probe(struct platform_device
 		nss_freq_init_cpu_usage();
 #endif
 
+#ifdef NSS_DRV_LSO_RX_ENABLE
 		nss_lso_rx_register_handler(nss_ctx);
+#endif
 	}
 
 	nss_top->frequency_handler_id = nss_dev->id;
--- a/nss_if.c
+++ b/nss_if.c
@@ -160,10 +160,10 @@ nss_tx_status_t nss_if_tx_buf(struct nss
 }
 
 /*
- * nss_if_tx_msg()
- *	Transmit a message to the specific interface on this core.
+ * nss_if_tx_msg_with_size()
+ *	Transmit a message to the specific interface on this core with a specified size.
  */
-nss_tx_status_t nss_if_tx_msg(struct nss_ctx_instance *nss_ctx, struct nss_if_msg *nim)
+nss_tx_status_t nss_if_tx_msg_with_size(struct nss_ctx_instance *nss_ctx, struct nss_if_msg *nim, uint32_t size)
 {
 	struct nss_cmn_msg *ncm = &nim->cm;
 	struct net_device *dev;
@@ -198,7 +198,19 @@ nss_tx_status_t nss_if_tx_msg(struct nss
 		return NSS_TX_FAILURE_BAD_PARAM;
 	}
 
-	return nss_core_send_cmd(nss_ctx, nim, sizeof(*nim), NSS_NBUF_PAYLOAD_SIZE);
+	return nss_core_send_cmd(nss_ctx, nim, sizeof(*nim), size);
+}
+EXPORT_SYMBOL(nss_if_tx_msg_with_size);
+
+/*
+ * nss_if_tx_msg()
+ *	Transmit a message to the specific interface on this core.
+ */
+nss_tx_status_t nss_if_tx_msg(struct nss_ctx_instance *nss_ctx, struct nss_if_msg *nim)
+{
+	NSS_VERIFY_CTX_MAGIC(nss_ctx);
+
+	return nss_if_tx_msg_with_size(nss_ctx, nim, NSS_NBUF_PAYLOAD_SIZE);
 }
 
 /*
--- a/nss_init.c
+++ b/nss_init.c
@@ -633,10 +633,24 @@ static struct ctl_table_header *nss_dev_
  */
 static int __init nss_init(void)
 {
+#if defined(NSS_DRV_POINT_OFFLOAD)
+	struct device_node *pof = NULL;
+#endif
+
+
 #if (NSS_DT_SUPPORT == 1)
 	struct device_node *cmn = NULL;
 #endif
-	nss_info("Init NSS driver");
+
+#if defined(NSS_DRV_POINT_OFFLOAD)
+	pof = of_find_node_by_name(NULL, "reg_update");
+	if ((!pof) || (!of_property_read_bool(pof, "ubi_core_enable"))) {
+		nss_info_always("UBI is not enabled. Disable qca-nss-drv\n");
+		return 0;
+	}
+#endif
+
+nss_info("Init NSS driver");
 
 #if (NSS_DT_SUPPORT == 1)
 	/*
@@ -739,7 +753,9 @@ static int __init nss_init(void)
 	/*
 	 * Registering sysctl for ipv4/6 specific config.
 	 */
+#ifdef NSS_DRV_IPV4_ENABLE
 	nss_ipv4_register_sysctl();
+#endif
 #ifdef NSS_DRV_IPV6_ENABLE
 	nss_ipv6_register_sysctl();
 #endif
@@ -778,7 +794,9 @@ static int __init nss_init(void)
 	/*
 	 * Registering sysctl for pppoe specific config.
 	 */
+#ifdef NSS_DRV_PPPOE_ENABLE
 	nss_pppoe_register_sysctl();
+#endif
 
 	/*
 	 * Setup Runtime Sample values
@@ -880,13 +898,6 @@ static int __init nss_init(void)
 #endif
 
 	/*
-	 * Init Wi-Fi mesh
-	 */
-#ifdef NSS_DRV_WIFI_MESH_ENABLE
-	nss_wifi_mesh_init();
-#endif
-
-	/*
 	 * Register platform_driver
 	 */
 	return platform_driver_register(&nss_driver);
@@ -923,13 +934,17 @@ static void __exit nss_cleanup(void)
 	/*
 	 * Unregister pppoe specific sysctl
 	 */
+#ifdef NSS_DRV_PPPOE_ENABLE
 	nss_pppoe_unregister_sysctl();
+#endif
 
 	/*
 	 * Unregister ipv4/6 specific sysctl and free allocated to connection tables
 	 */
+#ifdef NSS_DRV_IPV4_ENABLE
 	nss_ipv4_unregister_sysctl();
 	nss_ipv4_free_conn_tables();
+#endif
 
 #ifdef NSS_DRV_IPV6_ENABLE
 	nss_ipv6_unregister_sysctl();
--- a/nss_meminfo.c
+++ b/nss_meminfo.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. 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
@@ -408,7 +409,7 @@ static bool nss_meminfo_init_block_lists
 
 		if (strcmp(r->name, "profile_dma_ctrl") == 0) {
 			mem_ctx->sdma_ctrl = kern_addr;
-		nss_info_always("%px: set sdma %px\n", nss_ctx, kern_addr);
+		nss_info("%px: set sdma %px\n", nss_ctx, kern_addr);
 		}
 
 		/*
@@ -535,6 +536,13 @@ static bool nss_meminfo_configure_n2h_h2
 	}
 
 	/*
+	 * Returning true allows to execute firmware bin
+	 */
+	if (!mem_ctx->if_map) {
+		return true;
+	}
+
+	/*
 	 * Bring a fresh copy of if_map from memory in order to read it correctly.
 	 */
 	if_map = mem_ctx->if_map;
@@ -793,6 +801,6 @@ bool nss_meminfo_init(struct nss_ctx_ins
 
 	nss_meminfo_init_debugfs(nss_ctx);
 
-	nss_info_always("%px: meminfo init succeed\n", nss_ctx);
+	nss_info("%px: meminfo init succeed\n", nss_ctx);
 	return true;
 }
--- a/nss_n2h.c
+++ b/nss_n2h.c
@@ -2061,10 +2061,9 @@ void nss_n2h_register_handler(struct nss
 
 	if (nss_ctx->id == NSS_CORE_0) {
 		nss_n2h_stats_dentry_create();
+		nss_n2h_strings_dentry_create();
+		nss_drv_strings_dentry_create();
 	}
-	nss_n2h_strings_dentry_create();
-
-	nss_drv_strings_dentry_create();
 }
 
 /*
--- a/nss_phys_if.h
+++ b/nss_phys_if.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2021, 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.
@@ -70,6 +70,12 @@ struct nss_phys_if_estats {
 	uint32_t gmac_worst_case_ticks;	/**< Worst case iteration of the GMAC in ticks */
 	uint32_t gmac_iterations;	/**< Number of iterations around the GMAC */
 	uint32_t tx_pause_frames;	/**< Number of pause frames sent by the GMAC */
+
+	/*
+	 * On IPQ50xx, we rely on the SSDK to pull the mmc stats.
+	 * The FAL layer does not do this on IPQ806x.
+	 */
+#if defined(NSS_HAL_IPQ806X_SUPPORT)
 	uint32_t mmc_rx_overflow_errors;
 					/**< Number of RX overflow errors */
 	uint32_t mmc_rx_watchdog_timeout_errors;
@@ -94,6 +100,7 @@ struct nss_phys_if_estats {
 	uint32_t mmc_tx_single_col;	/* Number of single collisions */
 	uint32_t mmc_tx_multiple_col;	/* Number of multiple collisions */
 	uint32_t mmc_tx_octets_gb;	/* Number of good/bad octets sent*/
+#endif
 };
 
 /**
--- a/nss_profiler.c
+++ b/nss_profiler.c
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2013-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. 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
@@ -97,7 +100,7 @@ nss_tx_status_t nss_profiler_if_tx_buf(v
 		return NSS_TX_FAILURE_TOO_LARGE;
 	}
 
-	npm = kzalloc(sizeof(*npm), GFP_KERNEL);
+	npm = kzalloc(sizeof(*npm), GFP_ATOMIC);
 	if (!npm) {
 		nss_warning("%px: Failed to allocate memory for message\n", nss_ctx);
 		return NSS_TX_FAILURE;
@@ -121,6 +124,7 @@ void *nss_profiler_alloc_dma(struct nss_
 {
 	int size;
 	void *kaddr;
+	dma_addr_t dma_addr;
 	struct nss_profile_sdma_producer *dma;
 	struct nss_profile_sdma_ctrl *ctrl = (struct nss_profile_sdma_ctrl *)nss_ctx->meminfo_ctx.sdma_ctrl;
 	if (!ctrl)
@@ -132,7 +136,13 @@ void *nss_profiler_alloc_dma(struct nss_
 	kaddr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
 
 	if (kaddr) {
-		dma->desc_ring = dma_map_single(nss_ctx->dev, kaddr, size, DMA_FROM_DEVICE);
+		dma_addr = dma_map_single(nss_ctx->dev, kaddr, size, DMA_FROM_DEVICE);
+		if (unlikely(dma_mapping_error(nss_ctx->dev, dma_addr))) {
+			nss_info_always("%px: failed to map DDR block\n", nss_ctx);
+			kfree(kaddr);
+			return NULL;
+		}
+		dma->desc_ring = dma_addr;
 		NSS_CORE_DSB();
 	}
 	ctrl->consumer[0].ring.kp = kaddr;
--- a/nss_qrfs.c
+++ b/nss_qrfs.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2021 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.
@@ -415,6 +415,65 @@ nss_tx_status_t nss_qrfs_set_flow_rule(s
 EXPORT_SYMBOL(nss_qrfs_set_flow_rule);
 
 /*
+ * nss_qrfs_configure_flow_rule()
+ *	Configures a QRFS flow rule to NSS firmware
+ */
+nss_tx_status_t nss_qrfs_configure_flow_rule(uint32_t *dst_addr, uint32_t *src_addr, uint16_t dst_port, uint16_t src_port, uint32_t version, uint16_t proto, uint16_t cpu, enum nss_qrfs_msg_types type) {
+
+        struct nss_qrfs_msg nqm;
+        struct nss_qrfs_flow_rule_msg *nqfrm;
+        nss_tx_status_t status;
+        struct nss_ctx_instance *nss_ctx = NULL;
+	nss_qrfs_msg_callback_t cb = NULL;
+        int i;
+
+
+	memset(&nqm, 0, sizeof(struct nss_qrfs_msg));
+	nss_qrfs_msg_init(&nqm, NSS_QRFS_INTERFACE, type,
+			sizeof(struct nss_qrfs_flow_rule_msg), cb, (void *)nss_ctx);
+	if (type == NSS_QRFS_MSG_FLOW_ADD) {
+                nqfrm = &nqm.msg.flow_add;
+		cb = nss_qrfs_flow_add_msg_callback;
+	} else if (type == NSS_QRFS_MSG_FLOW_DELETE) {
+                nqfrm = &nqm.msg.flow_delete;
+		cb = nss_qrfs_flow_delete_msg_callback;
+	} else {
+		nss_warning("QRFS configure rule failed, not supported message type.\n");
+		return NSS_TX_FAILURE_BAD_PARAM;
+	}
+
+
+	nqfrm->protocol = proto;
+	nqfrm->ip_version = version;
+
+	if (version == 4) {
+		nqfrm->src_addr[0] = src_addr[0];
+		nqfrm->dst_addr[0] = dst_addr[0];
+	} else {
+		memcpy(nqfrm->src_addr, src_addr, sizeof(uint32_t) * 4);
+		memcpy(nqfrm->dst_addr, dst_addr, sizeof(uint32_t) * 4);
+	}
+
+	nqfrm->src_port = src_port;
+        nqfrm->dst_port = dst_port;
+        nqfrm->cpu = cpu;
+	nqfrm->if_num = 0;
+
+        for(i = 0; i < NSS_CORE_MAX; i++) {
+                nss_ctx = nss_qrfs_get_ctx(i);
+                status = nss_qrfs_tx_msg(nss_ctx, &nqm);
+
+		if (status) {
+			nss_warning("%px: QRFS configure rule failed, error code: %d\n", nss_ctx, status);
+			return NSS_TX_FAILURE;
+		}
+        }
+
+	return NSS_TX_SUCCESS;
+}
+EXPORT_SYMBOL(nss_qrfs_configure_flow_rule);
+
+/*
  * nss_qrfs_register_handler()
  */
 void nss_qrfs_register_handler(struct nss_ctx_instance *nss_ctx)
--- a/nss_rmnet_rx.c
+++ b/nss_rmnet_rx.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2019-2021, 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
@@ -243,6 +243,8 @@ static int nss_rmnet_rx_handle_destroy_s
 	rmnet_rx_handle[index_h2n] = NULL;
 	spin_unlock_bh(&nss_rmnet_rx_lock);
 
+	kfree(handle->stats_h2n);
+	kfree(handle->stats_n2h);
 	kfree(handle->pvt);
 	kfree(handle);
 
--- a/nss_rps.c
+++ b/nss_rps.c
@@ -278,6 +278,7 @@ static nss_tx_status_t nss_rps_cfg(struc
 	return NSS_SUCCESS;
 }
 
+#ifdef NSS_DRV_IPV4_ENABLE
 /*
  * nss_rps_ipv4_hash_bitmap_cfg()
  *	Send Message to NSS to configure hash_bitmap.
@@ -306,6 +307,7 @@ static nss_tx_status_t nss_rps_ipv4_hash
 	up(&nss_rps_cfg_pvt.sem);
 	return NSS_SUCCESS;
 }
+#endif
 
 #ifdef NSS_DRV_IPV6_ENABLE
 /*
@@ -456,8 +458,8 @@ static int nss_rps_hash_bitmap_cfg_handl
 				void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	struct nss_top_instance *nss_top = &nss_top_main;
-	struct nss_ctx_instance *nss_ctx = &nss_top->nss[0];
-	int ret, ret_ipv4, current_state;
+	struct nss_ctx_instance *nss_ctx __attribute__((unused)) = &nss_top->nss[0];
+	int ret, current_state;
 
 	current_state = nss_rps_hash_bitmap;
 	ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
@@ -471,16 +473,24 @@ static int nss_rps_hash_bitmap_cfg_handl
 		return ret;
 	}
 
+#if !defined(NSS_DRV_IPV4_ENABLE) || !defined(NSS_DRV_IPV6_ENABLE)
+	nss_info_always("%px: Feature is not supported\n", nss_ctx);
+	return 0;
+#else
 	if (nss_rps_hash_bitmap <= (NSS_RPS_MAX_CORE_HASH_BITMAP)) {
 		nss_info("Configuring NSS RPS hash_bitmap\n");
-		ret_ipv4 = nss_rps_ipv4_hash_bitmap_cfg(nss_ctx, nss_rps_hash_bitmap);
+#ifdef NSS_DRV_IPV4_ENABLE
+		{
+			int ret_ipv4;
+			ret_ipv4 = nss_rps_ipv4_hash_bitmap_cfg(nss_ctx, nss_rps_hash_bitmap);
 
-		if (ret_ipv4 != NSS_SUCCESS) {
-			nss_warning("%px: ipv4 hash_bitmap config message failed\n", nss_ctx);
-			nss_rps_hash_bitmap = current_state;
-			return ret_ipv4;
+			if (ret_ipv4 != NSS_SUCCESS) {
+				nss_warning("%px: ipv4 hash_bitmap config message failed\n", nss_ctx);
+				nss_rps_hash_bitmap = current_state;
+				return ret_ipv4;
+			}
 		}
-
+#endif
 #ifdef NSS_DRV_IPV6_ENABLE
 		{
 			int ret_ipv6;
@@ -501,6 +511,7 @@ static int nss_rps_hash_bitmap_cfg_handl
 
 	nss_info_always("Invalid input value. Valid values are less than %d\n", (NSS_RPS_MAX_CORE_HASH_BITMAP));
 	return ret;
+#endif
 }
 
 /* nss_rps_pri_map_cfg_handler()
--- a/nss_stats.c
+++ b/nss_stats.c
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2013-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. 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
@@ -149,6 +152,14 @@ int nss_stats_open(struct inode *inode,
 }
 
 /*
+ * nss_clear_stats_write()
+ *	Clear content of stats.
+ */
+ssize_t nss_clear_stats_write(struct file *fp, const char __user *ubuf, size_t sz, loff_t *ppos) {
+	return -ESRCH;
+}
+
+/*
  * nss_stats_release()
  *	Releases stats file.
  */
--- a/nss_stats.h
+++ b/nss_stats.h
@@ -1,9 +1,12 @@
 /*
  **************************************************************************
  * Copyright (c) 2016-2017, 2019-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. 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
@@ -38,10 +41,11 @@
 #define NSS_STATS_EXTRA_OUTPUT_LINES 35
 
 #define NSS_STATS_DECLARE_FILE_OPERATIONS(name) \
-static const struct file_operations nss_##name##_stats_ops = { \
+static struct file_operations nss_##name##_stats_ops = { \
 	.open = nss_stats_open, \
 	.read = nss_##name##_stats_read, \
-	.llseek = generic_file_llseek, \
+	.write = nss_clear_stats_write, \
+	.llseek = generic_file_llseek,		\
 	.release = nss_stats_release, \
 };
 
@@ -68,6 +72,7 @@ extern void nss_stats_register_sysctl(vo
 void nss_stats_init(void);
 extern int nss_stats_release(struct inode *inode, struct file *filp);
 extern int nss_stats_open(struct inode *inode, struct file *filp);
+extern ssize_t nss_clear_stats_write(struct file *fp, const char __user *ubuf, size_t sz, loff_t *ppos);
 void nss_stats_create_dentry(char *name, const struct file_operations *ops);
 extern void nss_stats_reset_common_stats(uint32_t if_num);
 extern size_t nss_stats_fill_common_stats(uint32_t if_num, int instance, char *lbuf, size_t size_wr, size_t size_al, char *node);
--- a/nss_vxlan.c
+++ b/nss_vxlan.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2019-2021, 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.
@@ -226,6 +226,7 @@ bool nss_vxlan_unregister_if(uint32_t if
 	}
 
 	nss_core_unregister_handler(nss_ctx, if_num);
+	nss_core_unregister_msg_handler(nss_ctx, if_num);
 	nss_core_unregister_subsys_dp(nss_ctx, if_num);
 	return true;
 }
--- a/nss_wifi_vdev.c
+++ b/nss_wifi_vdev.c
@@ -199,8 +199,16 @@ EXPORT_SYMBOL(nss_wifi_vdev_tx_msg_ext);
  */
 nss_tx_status_t nss_wifi_vdev_tx_buf(struct nss_ctx_instance *nss_ctx, struct sk_buff *os_buf, uint32_t if_num)
 {
+	enum nss_dynamic_interface_type if_type;
+
 	BUG_ON(((if_num < NSS_DYNAMIC_IF_START) || (if_num >= (NSS_DYNAMIC_IF_START + NSS_MAX_DYNAMIC_INTERFACES))));
 
+	if_type = nss_dynamic_interface_get_type(nss_ctx, if_num);
+	if (if_type != NSS_DYNAMIC_INTERFACE_TYPE_VAP) {
+		nss_warning("%px: non vap %d packet tx not allowed", nss_ctx, if_num);
+		return NSS_TX_FAILURE_NOT_SUPPORTED;
+	}
+
 	return nss_core_send_packet(nss_ctx, os_buf, if_num, H2N_BIT_FLAG_BUFFER_REUSABLE);
 }
 EXPORT_SYMBOL(nss_wifi_vdev_tx_buf);
--- a/nss_data_plane/include/nss_data_plane.h
+++ b/nss_data_plane/include/nss_data_plane.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2014-2017,2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2017,2020-2021, 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.
@@ -25,6 +25,8 @@
 #include <nss_api_if.h>
 #include "nss_phys_if.h"
 
+#define NSS_DATA_PLANE_MAX_PACKET_LEN	65535
+
 /*
  * nss_data_plane_schedule_registration()
  *	Called from nss_init to schedule a work to do data_plane register to data plane host driver
--- a/nss_data_plane/nss_data_plane.c
+++ b/nss_data_plane/nss_data_plane.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2021, 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.
@@ -101,12 +101,6 @@ static int __nss_data_plane_mac_addr(str
 static int __nss_data_plane_change_mtu(struct nss_dp_data_plane_ctx *dpc, uint32_t mtu)
 {
 	struct nss_data_plane_param *dp = (struct nss_data_plane_param *)dpc;
-
-	if (mtu > NSS_DP_MAX_MTU_SIZE) {
-		nss_warning("%px: MTU exceeds MAX size %d\n", dp, mtu);
-		return NSS_DP_FAILURE;
-	}
-
 	return nss_phys_if_change_mtu(dp->nss_ctx, mtu, dp->if_num);
 }
 
@@ -166,8 +160,9 @@ static netdev_tx_t __nss_data_plane_buf(
 		goto drop;
 	}
 
-	if (skb->len > NSS_DP_MAX_PACKET_LEN) {
-		nss_warning("skb->len ( %u ) > Maximum packet length ( %u ) \n", skb->len, NSS_DP_MAX_PACKET_LEN);
+	if (skb->len > NSS_DATA_PLANE_MAX_PACKET_LEN) {
+		nss_warning("skb->len ( %u ) > Maximum packet length ( %u ) \n",
+				skb->len, NSS_DATA_PLANE_MAX_PACKET_LEN);
 		goto drop;
 	}
 
--- a/exports/nss_wifi_vdev.h
+++ b/exports/nss_wifi_vdev.h
@@ -166,6 +166,7 @@ enum nss_wifi_vdev_ext_data_pkt_type {
 							/**< Mesh link VAP special packet. */
 	NSS_WIFI_VDEV_MESH_EXT_DATA_PKT_TYPE_RX_MCAST_EXC = 16,
 							/**< Mesh link VAP multicast packet. */
+	NSS_WIFI_VDEV_EXT_DATA_PKT_TYPE_4ADDR,		/**< 4 address exception to host. */
 	NSS_WIFI_VDEV_EXT_DATA_PKT_TYPE_MAX
 };
 
@@ -815,6 +816,16 @@ struct nss_wifi_vdev_ppdu_metadata {
 };
 
 /**
+ * nss_wifi_vdev_addr4_data_metadata
+ *	Address four metadata
+ */
+struct nss_wifi_vdev_addr4_data_metadata {
+	uint16_t peer_id;		/**< Peer ID. */
+	uint8_t sa_valid;		/**< Source address is valid. */
+	uint8_t addr4_valid;		/**< Address four is valid. */
+};
+
+/**
  * nss_wifi_vdev_per_packet_metadata
  *	Wi-Fi per packet metadata content.
  */
@@ -843,6 +854,8 @@ struct nss_wifi_vdev_per_packet_metadata
 			/**< Per packet Tx metadata structure for wireless distribution system mode. */
 		struct nss_wifi_vdev_ppdu_metadata ppdu_metadata;
 			/**< Per packet PPDU metadata needed for per PPDU copy mode. */
+		struct nss_wifi_vdev_addr4_data_metadata addr4_metadata;
+			/**< Create metadata for the WDS extension interface. */
 	} metadata;
 			/**< Metadata payload for special data receive message. */
 };
@@ -1039,6 +1052,8 @@ struct nss_wifi_vdev_stats_sync_msg {
 	uint32_t rx_mic_err;			/**< Receive MIC error */
 	uint32_t mcbc_exc_host_fail_cnt;
 			/**< Number of multicast/broadcast packets failed to send to host through exception path. */
+	uint32_t addr4_exc_fail;			/**< Number of failed 4 address exceptions. */
+	uint32_t addr4_exc_pass;			/**< Number of successful 4 address exceptions. */
 };
 
 /**
@@ -1071,13 +1086,13 @@ struct nss_wifi_vdev_msg {
 		struct nss_wifi_vdev_me_snptbl_deny_grp_add_msg vdev_deny_member_add;
 				/**< Add a snooplist member to the deny list. */
 		struct nss_wifi_vdev_me_hmmc_add_msg vdev_hmmc_member_add;
-				/**< Adds a new member into the HMMC list. */
+				/**< Adds a member to the HMMC list. */
 		struct nss_wifi_vdev_me_hmmc_del_msg vdev_hmmc_member_del;
-				/**< Delete a member from the HMMC list. */
+				/**< Deletes a member from the HMMC list. */
 		struct nss_wifi_vdev_me_deny_ip_add_msg vdev_deny_list_member_add;
-				/**< Adds a new member into the deny list. */
+				/**< Adds a member to the denylist. */
 		struct nss_wifi_vdev_me_deny_ip_del_msg vdev_deny_list_member_del;
-				/**< Delete a member from the deny list. */
+				/**< Deletes a member from the denylist. */
 		struct nss_wifi_vdev_txmsg vdev_txmsgext;
 				/**< Transmits special data. */
 		struct nss_wifi_vdev_vow_dbg_cfg_msg vdev_vow_dbg_cfg;
--- a/exports/nss_wifi_ext_vdev_if.h
+++ b/exports/nss_wifi_ext_vdev_if.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2020, 2021, 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
@@ -26,6 +26,11 @@
 
 #define NSS_WIFI_EXT_VDEV_MAX 16
 
+/**
+ * @addtogroup nss_wifi_ext_vdev_subsystem
+ * @{
+ */
+
 /*
  * nss_wifi_ext_vdev_msg_types
  *	WiFi extension virtual device mesage types.
@@ -294,4 +299,8 @@ extern struct nss_ctx_instance *nss_wifi
 		nss_wifi_ext_vdev_data_callback_t cb_func_data, nss_wifi_ext_vdev_ext_data_callback_t cb_func_ext,
 		nss_wifi_ext_vdev_msg_callback_t cb_func_msg, struct net_device *netdev, uint32_t features,
 		void *app_ctx);
+/**
+ * @}
+ */
+
 #endif
--- a/exports/nss_wifili_if.h
+++ b/exports/nss_wifili_if.h
@@ -1,16 +1,19 @@
 /*
  **************************************************************************
  * Copyright (c) 2017-2021, 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.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. 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.
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  **************************************************************************
  */
 
@@ -84,7 +87,7 @@
 				/**< Maximum DMA error codes. */
 #define NSS_WIFILI_MAX_TID 8
 				/**< Maximum TID values. */
-#define NSS_WIFILI_DELAY_INDEX_MAX 10
+#define NSS_WIFILI_DELAY_INDEX_MAX 13
 				/**< Maximum software enqueue delay buckets. */
 #define NSS_WIFILI_MAX_NUMBER_OF_ADDTNL_SEG 64
 				/**< Maximum number of additional pages allocated from host. */
@@ -94,6 +97,8 @@
 				/**< Maximum number of flow queues. */
 #define NSS_WIFILI_WBM_INTERNAL_ERR_MAX 5
 				/**< WBM internal maximum errors. */
+#define NSS_WIFILI_MAX_VOW_TID_NUM 4
+				/**< Maximum version 3 TID values. */
 
 /*
  * Peer Size in Bytes
@@ -101,6 +106,11 @@
 #define NSS_WIFILI_PEER_SIZE 1600
 
 /*
+ * Maximum size of target SoC type string
+ */
+#define NSS_WIFILI_SOC_STRING_SIZE_MAX 24
+
+/*
  * Radio specific flags
  */
 #define NSS_WIFILI_PDEV_FLAG_V3_STATS_ENABLED 0x00000008
@@ -657,9 +667,12 @@ struct nss_wifili_stats {
  * NSS wifili soc stats
  */
 struct nss_wifili_soc_stats {
-	uint32_t soc_maxpdev;	/**< Maximum number of radios per SoC. */
+	uint32_t soc_maxpdev;
+					/**< Maximum number of radios per SoC. */
 	struct nss_wifili_stats stats_wifili;
-				/**< Per-SoC statistics. */
+					/**< Per-SoC statistics. */
+	char soc_type[NSS_WIFILI_SOC_STRING_SIZE_MAX];
+					/**< Target SoC type string. */
 };
 
 /**
@@ -711,7 +724,7 @@ struct nss_wifili_hal_srng_soc_msg {
 	uint32_t shadow_wrptr_mem_addr;
 			/**< Shadow write pointer address. */
 	uint32_t lmac_rings_start_id;
-			/**< start id of LMAC rings. */
+			/**< Start ID of LMAC rings. */
 };
 
 /**
@@ -1264,6 +1277,8 @@ struct nss_wifili_device_stats {
 struct nss_wifili_stats_sync_msg {
 	struct nss_wifili_device_stats stats;
 			/**< Device statistics. */
+	uint32_t target_type;
+			/**< Target SoC type. */
 };
 
 /**
--- a/exports/nss_wifi_mac_db_if.h
+++ b/exports/nss_wifi_mac_db_if.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2020, 2021, 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
@@ -25,6 +25,11 @@
 
 #define NSS_WIFI_MAC_DB_ENTRY_IF_LOCAL 0x1
 
+ /**
+ * @addtogroup nss_wifi_mac_db_if_subsystem
+ * @{
+ */
+
 /*
  * MAX Wi-Fi MAC database entries sent in group
  * is chosen considering the entry size and
@@ -72,6 +77,7 @@ enum nss_wifi_mac_db_if_opmode {
 };
 
 /**
+ * nss_wifi_mac_db_err_types
  * Wi-Fi MAC database errors.
  */
 enum nss_wifi_mac_db_err_types {
@@ -274,4 +280,9 @@ struct nss_ctx_instance *nss_register_wi
  */
 void nss_unregister_wifi_mac_db_if(uint32_t if_num);
 struct nss_ctx_instance *nss_wifi_mac_db_get_context(void);
+
+/**
+ * @}
+ */
+
 #endif /* __NSS_WIFI_MAC_DB_H */
--- a/exports/nss_wifi_mesh.h
+++ b/exports/nss_wifi_mesh.h
@@ -102,7 +102,7 @@ enum nss_wifi_mesh_pre_header_type {
 
 /*
  * nss_wifi_mesh_extended_data_pkt_types
- * 	Wi-Fi mesh extended data pkt types.
+ * 	Wi-Fi mesh extended data packet types.
  */
 enum nss_wifi_mesh_extended_data_pkt_types {
 	WIFI_MESH_EXT_DATA_PKT_TYPE_NONE,		/**< No packet type. */
@@ -114,13 +114,13 @@ enum nss_wifi_mesh_extended_data_pkt_typ
  *	Wi-Fi header
  */
 struct nss_wifi_mesh_ieee80211_hdr {
-	uint16_t frame_ctl;				/* Frame control. */
-	uint16_t duration_id;				/* Duration ID. */
-	uint8_t addr1[ETH_ALEN];			/* Address 1. */
-	uint8_t addr2[ETH_ALEN];			/* Address 2. */
-	uint8_t addr3[ETH_ALEN];			/* Address 3. */
-	uint16_t seq_ctrl;				/* Sequence control. */
-	uint8_t addr4[ETH_ALEN];			/* Address 4. */
+	uint16_t frame_ctl;				/**< Frame control. */
+	uint16_t duration_id;				/**< Duration ID. */
+	uint8_t addr1[ETH_ALEN];			/**< Address 1. */
+	uint8_t addr2[ETH_ALEN];			/**< Address 2. */
+	uint8_t addr3[ETH_ALEN];			/**< Address 3. */
+	uint16_t seq_ctrl;				/**< Sequence control. */
+	uint8_t addr4[ETH_ALEN];			/**< Address 4. */
 }__packed;
 
 /*
@@ -128,16 +128,16 @@ struct nss_wifi_mesh_ieee80211_hdr {
  *	Wi-Fi mesh header
  */
 struct nss_wifi_mesh_ieee80211s_hdr {
-	uint8_t flags;					/* Mesh flags. */
-	uint8_t ttl;					/* TTL. */
-	uint32_t seq_num;				/* Sequence number. */
-	uint8_t eaddr1[ETH_ALEN];			/* Mesh Address1. */
-	uint8_t eaddr2[ETH_ALEN];			/* Mesh Address2. */
+	uint8_t flags;					/**< Mesh flags. */
+	uint8_t ttl;					/**< TTL. */
+	uint32_t seq_num;				/**< Sequence number. */
+	uint8_t eaddr1[ETH_ALEN];			/**< Mesh Address1. */
+	uint8_t eaddr2[ETH_ALEN];			/**< Mesh Address2. */
 }__packed;
 
 /*
  * nss_wifi_mesh_per_packet_metadata
- * 	Wi-Fi mesh per packet metadata structure.
+ *      Wi-Fi mesh per packet metadata structure.
  */
 struct nss_wifi_mesh_per_packet_metadata {
 	uint16_t pkt_type;					/* Packet type of the metadata. */
@@ -150,8 +150,8 @@ struct nss_wifi_mesh_per_packet_metadata
  *	NSS-to-host path will be seen by ECM for rules.
  */
 enum nss_wifi_mesh_dp_type {
-	NSS_WIFI_MESH_DP_INNER,		/**< Inner/Encapsulation Interface. */
-	NSS_WIFI_MESH_DP_OUTER,		/**< Outer/Decapsulation Interface. */
+	NSS_WIFI_MESH_DP_INNER,		/**< Inner/encapsulation interface. */
+	NSS_WIFI_MESH_DP_OUTER,		/**< Outer/decapsulation interface. */
 };
 
 /**
@@ -350,7 +350,7 @@ struct nss_wifi_mesh_proxy_path_del_msg
 
 /**
  * nss_wifi_mesh_mpath_not_found_msg
- *	Wi-Fi mesh path not found meesage.
+ *	Wi-Fi mesh path not found message.
  */
 struct nss_wifi_mesh_mpath_not_found_msg {
 	uint8_t dest_mac_addr[ETH_ALEN];		/**< Destination MAC address. */
@@ -958,7 +958,7 @@ nss_tx_status_t nss_wifi_mesh_tx_msg_ext
 
 /**
  * nss_wifi_mesh_verify_if_num
- *	Verify Wi-Fi mesh interface number.
+ *	Verifies the Wi-Fi mesh interface number.
  *
  * @datatypes
  * interface number \n
@@ -997,4 +997,9 @@ extern int nss_wifi_mesh_stats_register_
  * 0 on success or non-zero on failure.
  */
 extern int nss_wifi_mesh_stats_unregister_notifier(struct notifier_block *nb);
+
+/**
+ * @}
+ */
+
 #endif /* __NSS_WIFI_MESH_H */
--- a/nss_wifili_stats.c
+++ b/nss_wifili_stats.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2021, 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.
@@ -37,6 +37,38 @@ ATOMIC_NOTIFIER_HEAD(nss_wifili_stats_no
 struct nss_wifili_soc_stats soc_stats[NSS_WIFILI_MAX_SOC_NUM];
 
 /*
+ * nss_wifili_target_type_string()
+ * 	Convert Target Type Integer to String
+ */
+void nss_wifili_target_type_to_string(uint32_t target_type, char *target_type_str)
+{
+	switch (target_type) {
+
+	case NSS_WIFILI_TARGET_TYPE_QCA8074:
+		snprintf(target_type_str, NSS_WIFILI_SOC_STRING_SIZE_MAX, "IPQ8074 V1");
+		break;
+	case NSS_WIFILI_TARGET_TYPE_QCA8074V2:
+	case 0:
+		snprintf(target_type_str, NSS_WIFILI_SOC_STRING_SIZE_MAX, "IPQ8074 V2");
+		break;
+	case NSS_WIFILI_TARGET_TYPE_QCA6018:
+		snprintf(target_type_str, NSS_WIFILI_SOC_STRING_SIZE_MAX, "IPQ6018");
+		break;
+	case NSS_WIFILI_TARGET_TYPE_QCN9000:
+		snprintf(target_type_str, NSS_WIFILI_SOC_STRING_SIZE_MAX, "QCN9000");
+		break;
+	case NSS_WIFILI_TARGET_TYPE_QCA5018:
+		snprintf(target_type_str, NSS_WIFILI_SOC_STRING_SIZE_MAX, "IPQ5018");
+		break;
+	case NSS_WIFILI_TARGET_TYPE_QCN6122:
+		snprintf(target_type_str, NSS_WIFILI_SOC_STRING_SIZE_MAX, "QCN6122");
+		break;
+	default :
+		snprintf(target_type_str, NSS_WIFILI_SOC_STRING_SIZE_MAX, "Unknown");
+        }
+}
+
+/*
  * nss_wifili_stats_read()
  *	Read wifili statistics
  */
@@ -56,6 +88,7 @@ static ssize_t nss_wifili_stats_read(str
 	char *lbuf = NULL;
 	uint32_t soc_idx;
 	struct nss_wifili_stats *stats_wifili = NULL;
+	char pdev_tag[NSS_WIFILI_SOC_STRING_SIZE_MAX];
 
 	/*
 	 * Max number of pdev depends on type of soc (Internal/Attached).
@@ -83,12 +116,17 @@ static ssize_t nss_wifili_stats_read(str
 		return 0;
 	}
 
-	size_wr += nss_stats_banner(lbuf, size_wr, size_al, "wifili", NSS_STATS_SINGLE_CORE);
 
 	for (soc_idx = 0; soc_idx < NSS_WIFILI_MAX_SOC_NUM; soc_idx++) {
+		if (soc_stats[soc_idx].soc_maxpdev == 0) {
+			continue;
+		}
+
+		size_wr += nss_stats_banner(lbuf, size_wr, size_al, soc_stats[soc_idx].soc_type, NSS_STATS_SINGLE_CORE);
 		stats_wifili = &(soc_stats[soc_idx].stats_wifili);
 		for (i = 0; i < soc_stats[soc_idx].soc_maxpdev; i++) {
-
+			snprintf(pdev_tag, NSS_WIFILI_SOC_STRING_SIZE_MAX, "PDEV %d", i);
+			size_wr += nss_stats_banner(lbuf, size_wr, size_al, pdev_tag, NSS_STATS_SINGLE_CORE);
 			spin_lock_bh(&nss_top_main.stats_lock);
 			size_wr += nss_stats_print("wifili", "txrx", i
 					, nss_wifili_strings_stats_txrx
@@ -238,6 +276,9 @@ void nss_wifili_stats_sync(struct nss_ct
 	struct nss_wifili_stats *stats = NULL;
 	struct nss_wifili_device_stats *devstats = &wlsoc_stats->stats;
 	uint32_t index;
+	char target_type_str[NSS_WIFILI_SOC_STRING_SIZE_MAX];
+
+	nss_wifili_target_type_to_string(wlsoc_stats->target_type, target_type_str);
 
 	/*
 	 * Max number of pdev depends on type of soc (Internal/Attached).
@@ -246,16 +287,19 @@ void nss_wifili_stats_sync(struct nss_ct
 	case NSS_WIFILI_INTERNAL_INTERFACE:
 		nwss = &soc_stats[0];
 		nwss->soc_maxpdev = NSS_WIFILI_MAX_PDEV_NUM_MSG;
+		snprintf(nwss->soc_type, NSS_WIFILI_SOC_STRING_SIZE_MAX, "INTERNAL: %s", target_type_str);
 		break;
 
 	case NSS_WIFILI_EXTERNAL_INTERFACE0:
 		nwss = &soc_stats[1];
 		nwss->soc_maxpdev = NSS_WIFILI_SOC_ATTACHED_MAX_PDEV_NUM;
+		snprintf(nwss->soc_type, NSS_WIFILI_SOC_STRING_SIZE_MAX, "ATTACH 0: %s", target_type_str);
 		break;
 
 	case NSS_WIFILI_EXTERNAL_INTERFACE1:
 		nwss = &soc_stats[2];
 		nwss->soc_maxpdev = NSS_WIFILI_SOC_ATTACHED_MAX_PDEV_NUM;
+		snprintf(nwss->soc_type, NSS_WIFILI_SOC_STRING_SIZE_MAX, "ATTACH 1: %s", target_type_str);
 		break;
 
 	default:
@@ -458,7 +502,7 @@ void nss_wifili_stats_notify(struct nss_
 	struct nss_wifili_stats_notification *wifili_stats;
 	uint32_t index = 0;
 
-	wifili_stats = kzalloc(sizeof(struct nss_wifili_stats_notification), GFP_ATOMIC);
+	wifili_stats = kzalloc(sizeof(struct nss_wifili_stats_notification), in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
 	if (!wifili_stats) {
 		nss_warning("%px: Failed to allocate memory for wifili stats\n", nss_ctx);
 		return;
--- a/nss_wifili_stats.h
+++ b/nss_wifili_stats.h
@@ -22,6 +22,13 @@
 #ifndef __NSS_WIFILI_STATS_H
 #define __NSS_WIFILI_STATS_H
 
+#define NSS_WIFILI_TARGET_TYPE_QCA8074   20
+#define NSS_WIFILI_TARGET_TYPE_QCA8074V2 24
+#define NSS_WIFILI_TARGET_TYPE_QCA6018   25
+#define NSS_WIFILI_TARGET_TYPE_QCN9000   26
+#define NSS_WIFILI_TARGET_TYPE_QCA5018   29
+#define NSS_WIFILI_TARGET_TYPE_QCN6122   30
+
 #include "nss_core.h"
 #include "nss_wifili_if.h"
 
--- a/nss_wifili_strings.c
+++ b/nss_wifili_strings.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2019-2021, 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
@@ -71,10 +71,10 @@ struct nss_stats_info nss_wifili_strings
  *	wifili tx comp stats
  */
 struct nss_stats_info nss_wifili_strings_stats_tx_comp[NSS_WIFILI_STATS_TX_DESC_FREE_MAX] = {
-	{"tx_desc_free_inv_bufsrc"	, NSS_STATS_TYPE_ERROR},
-	{"tx_desc_free_inv_cookie"	, NSS_STATS_TYPE_SPECIAL},
-	{"tx_desc_free_hw_ring_empty"	, NSS_STATS_TYPE_SPECIAL},
-	{"tx_desc_free_reaped"		, NSS_STATS_TYPE_SPECIAL}
+	{"tx_desc_free_inv_bufsrc"		, NSS_STATS_TYPE_ERROR},
+	{"tx_desc_free_inv_cookie"		, NSS_STATS_TYPE_SPECIAL},
+	{"tx_desc_free_hw_ring_empty"		, NSS_STATS_TYPE_SPECIAL},
+	{"tx_desc_free_reaped"			, NSS_STATS_TYPE_SPECIAL}
 };
 
 /*
--- a/nss_wifi_mesh_stats.c
+++ b/nss_wifi_mesh_stats.c
@@ -223,7 +223,7 @@ static uint32_t nss_wifi_mesh_get_valid_
 static ssize_t nss_wifi_mesh_stats_read(struct file *fp, char __user *ubuf, size_t sz, loff_t *ppos, uint16_t type)
 {
 	uint32_t max_output_lines, max_stats;
-	size_t size_al, size_wr;
+	size_t size_al, size_wr = 0;
 	ssize_t bytes_read = 0;
 	struct nss_stats_data *data = fp->private_data;
 	int ifindex;
--- a/nss_wifi_stats.c
+++ b/nss_wifi_stats.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2016-2017, 2019-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2017, 2019-2021 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.