nss-packages-qosmio/qca-nss-drv/patches/0013-backport-12.1.patch

--- a/Makefile
+++ b/Makefile
@@ -8,8 +8,6 @@ obj-m += qca-nss-drv.o
 # List the files that belong to the driver in alphabetical order.
 #
 qca-nss-drv-objs := \
-			nss_bridge.o \
-			nss_bridge_log.o \
 			nss_cmn.o \
 			nss_core.o \
 			nss_coredump.o \
@@ -18,9 +16,6 @@ qca-nss-drv-objs := \
 			nss_dynamic_interface.o \
 			nss_dynamic_interface_log.o \
 			nss_dynamic_interface_stats.o \
-			nss_edma.o \
-			nss_edma_stats.o \
-			nss_edma_strings.o \
 			nss_eth_rx.o \
 			nss_eth_rx_stats.o \
 			nss_eth_rx_strings.o \
@@ -32,16 +27,6 @@ qca-nss-drv-objs := \
 			nss_ipv4_stats.o \
 			nss_ipv4_strings.o \
 			nss_ipv4_log.o \
-			nss_ipv4_reasm.o \
-			nss_ipv4_reasm_stats.o \
-			nss_ipv4_reasm_strings.o \
-			nss_ipv6.o \
-			nss_ipv6_stats.o \
-			nss_ipv6_strings.o \
-			nss_ipv6_log.o \
-			nss_ipv6_reasm.o \
-			nss_ipv6_reasm_stats.o \
-			nss_ipv6_reasm_strings.o \
 			nss_log.o \
 			nss_lso_rx.o \
 			nss_lso_rx_stats.o \
@@ -104,6 +89,21 @@ qca-nss-drv-objs += nss_wifi.o \
 			nss_wifi_mac_db.o
 endif
 
+ifneq "$(NSS_DRV_BRIDGE_ENABLE)" "n"
+ccflags-y += -DNSS_DRV_BRIDGE_ENABLE
+qca-nss-drv-objs += \
+		    nss_bridge.o \
+		    nss_bridge_log.o
+endif
+
+ifneq "$(NSS_DRV_IPV4_REASM_ENABLE)" "n"
+ccflags-y += -DNSS_DRV_IPV4_REASM_ENABLE
+qca-nss-drv-objs += \
+		    nss_ipv4_reasm.o \
+		    nss_ipv4_reasm_stats.o \
+		    nss_ipv4_reasm_strings.o
+endif
+
 ifneq "$(NSS_DRV_L2TP_ENABLE)" "n"
 ccflags-y += -DNSS_DRV_L2TP_ENABLE
 qca-nss-drv-objs += \
@@ -128,20 +128,20 @@ qca-nss-drv-objs += \
 			 nss_pvxlan_stats.o
 endif
 
-ifneq "$(NSS_DRV_MATCH_ENABLE)" "n"
-ccflags-y += -DNSS_DRV_MATCH_ENABLE
+ifneq "$(NSS_DRV_IPV6_ENABLE)" "n"
+ccflags-y += -DNSS_DRV_IPV6_ENABLE
 qca-nss-drv-objs += \
-			nss_match.o \
-			nss_match_log.o \
-			nss_match_stats.o
+			nss_ipv6.o \
+			nss_ipv6_stats.o \
+			nss_ipv6_strings.o \
+			nss_ipv6_log.o
+ifneq "$(NSS_DRV_IPV6_REASM_ENABLE)" "n"
+ccflags-y += -DNSS_DRV_IPV6_REASM_ENABLE
+qca-nss-drv-objs += \
+		    nss_ipv6_reasm.o \
+		    nss_ipv6_reasm_stats.o \
+		    nss_ipv6_reasm_strings.o
 endif
-
-ifneq "$(NSS_DRV_MIRROR_ENABLE)" "n"
-ccflags-y += -DNSS_DRV_MIRROR_ENABLE
-qca-nss-drv-objs += \
-			nss_mirror.o \
-			nss_mirror_log.o \
-			nss_mirror_stats.o
 endif
 
 ifneq "$(NSS_DRV_TSTAMP_ENABLE)" "n"
@@ -292,17 +292,6 @@ qca-nss-drv-objs += \
 			 nss_clmap_stats.o
 endif
 
-ifneq "$(NSS_DRV_C2C_ENABLE)" "n"
-ccflags-y += -DNSS_DRV_C2C_ENABLE
-qca-nss-drv-objs += \
-			 nss_c2c_tx.o \
-			 nss_c2c_tx_log.o \
-			 nss_c2c_tx_stats.o \
-			 nss_c2c_tx_strings.o \
-			 nss_c2c_rx.o \
-			 nss_c2c_rx_stats.o \
-			 nss_c2c_rx_strings.o
-endif
 
 ifneq "$(NSS_DRV_VXLAN_ENABLE)" "n"
 ccflags-y += -DNSS_DRV_VXLAN_ENABLE
@@ -312,10 +301,37 @@ qca-nss-drv-objs += \
 			 nss_vxlan_stats.o
 endif
 
-ifeq ($(SoC),$(filter $(SoC),ipq806x ipq40xx))
+ifneq "$(NSS_DRV_MATCH_ENABLE)" "n"
+ccflags-y += -DNSS_DRV_MATCH_ENABLE
+qca-nss-drv-objs += \
+			nss_match.o \
+			nss_match_log.o \
+			nss_match_stats.o
+endif
+
+ifneq "$(NSS_DRV_MIRROR_ENABLE)" "n"
+ccflags-y += -DNSS_DRV_MIRROR_ENABLE
+qca-nss-drv-objs += \
+			nss_mirror.o \
+			nss_mirror_log.o \
+			nss_mirror_stats.o
+endif
+
+ifeq ($(SoC),$(filter $(SoC),ipq806x))
 qca-nss-drv-objs += nss_data_plane/nss_data_plane_gmac.o \
 		    nss_hal/ipq806x/nss_hal_pvt.o
 
+ifneq "$(NSS_DRV_C2C_ENABLE)" "n"
+ccflags-y += -DNSS_DRV_C2C_ENABLE
+qca-nss-drv-objs += \
+			 nss_c2c_tx.o \
+			 nss_c2c_tx_log.o \
+			 nss_c2c_tx_stats.o \
+			 nss_c2c_tx_strings.o \
+			 nss_c2c_rx.o \
+			 nss_c2c_rx_stats.o \
+			 nss_c2c_rx_strings.o
+endif
 ifneq "$(NSS_DRV_IPSEC_ENABLE)" "n"
 ccflags-y += -DNSS_DRV_IPSEC_ENABLE
 qca-nss-drv-objs += \
@@ -342,6 +358,9 @@ endif
 
 ifeq ($(SoC),$(filter $(SoC),ipq60xx ipq60xx_64 ipq807x ipq807x_64))
 qca-nss-drv-objs += nss_data_plane/nss_data_plane.o \
+			nss_edma.o \
+			nss_edma_stats.o \
+			nss_edma_strings.o \
 			nss_ppe.o \
 			nss_ppe_log.o \
 			nss_ppe_stats.o \
@@ -382,9 +401,9 @@ endif
 ifneq "$(NSS_DRV_QVPN_ENABLE)" "n"
 ccflags-y += -DNSS_DRV_QVPN_ENABLE
 qca-nss-drv-objs += \
-             nss_qvpn.o \
-             nss_qvpn_stats.o \
-             nss_qvpn_log.o
+	     nss_qvpn.o \
+	     nss_qvpn_log.o \
+	     nss_qvpn_stats.o
 endif
 ifneq "$(NSS_DRV_TLS_ENABLE)" "n"
 ccflags-y += -DNSS_DRV_TLS_ENABLE
@@ -397,6 +416,17 @@ endif
 ifeq ($(SoC),$(filter $(SoC),ipq807x ipq807x_64))
 qca-nss-drv-objs += nss_hal/ipq807x/nss_hal_pvt.o \
 		    nss_data_plane/hal/nss_ipq807x.o
+ifneq "$(NSS_DRV_C2C_ENABLE)" "n"
+ccflags-y += -DNSS_DRV_C2C_ENABLE
+qca-nss-drv-objs += \
+			 nss_c2c_tx.o \
+			 nss_c2c_tx_log.o \
+			 nss_c2c_tx_stats.o \
+			 nss_c2c_tx_strings.o \
+			 nss_c2c_rx.o \
+			 nss_c2c_rx_stats.o \
+			 nss_c2c_rx_strings.o
+endif
 ccflags-y += -I$(obj)/nss_hal/ipq807x -DNSS_HAL_IPQ807x_SUPPORT -DNSS_MULTI_H2N_DATA_RING_SUPPORT
 endif
 
@@ -437,7 +467,7 @@ endif
 ccflags-y += -I$(obj)/nss_hal/include -I$(obj)/nss_data_plane/include -I$(obj)/exports -DNSS_DEBUG_LEVEL=0 -DNSS_PKT_STATS_ENABLED=1
 ccflags-y += -I$(obj)/nss_data_plane/hal/include
 ccflags-y += -DNSS_PM_DEBUG_LEVEL=0 -DNSS_SKB_REUSE_SUPPORT=1
-ccflags-y += -Werror
+ccflags-y += -Wall -Werror
 
 KERNELVERSION := $(word 1, $(subst ., ,$(KERNELVERSION))).$(word 2, $(subst ., ,$(KERNELVERSION)))
 
--- a/nss_core.c
+++ b/nss_core.c
@@ -895,7 +895,7 @@ 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;
@@ -953,11 +953,11 @@ 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;
 			}
@@ -1067,6 +1067,21 @@ static inline void nss_core_rx_pbuf(stru
 }
 
 /*
+ * nss_core_set_skb_classify()
+ *	Set skb field to avoid ingress shaping.
+ */
+static inline void nss_core_set_skb_classify(struct sk_buff *nbuf)
+{
+#ifdef CONFIG_NET_CLS_ACT
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0))
+		nbuf->tc_verd = SET_TC_NCLS_NSS(nbuf->tc_verd);
+#else
+		skb_skip_tc_classify(nbuf);
+#endif
+#endif
+}
+
+/*
  * nss_core_handle_nrfrag_skb()
  *	Handled the processing of fragmented skb's
  */
@@ -1119,9 +1134,10 @@ static inline bool nss_core_handle_nr_fr
 		 * ingress shaped flag set.
 		 */
 		if (unlikely(desc->bit_flags & N2H_BIT_FLAG_INGRESS_SHAPED)) {
-			nbuf->tc_verd_qca_nss = SET_TC_NCLS_NSS(nbuf->tc_verd_qca_nss);
+			nss_core_set_skb_classify(nbuf);
 		}
 #endif
+
 		goto pull;
 	}
 
@@ -1159,7 +1175,7 @@ static inline bool nss_core_handle_nr_fr
 		 * ingress shaped flag set.
 		 */
 		if (unlikely(desc->bit_flags & N2H_BIT_FLAG_INGRESS_SHAPED)) {
-			nbuf->tc_verd_qca_nss = SET_TC_NCLS_NSS(nbuf->tc_verd_qca_nss);
+			nss_core_set_skb_classify(nbuf);
 		}
 #endif
 
@@ -1274,7 +1290,7 @@ static inline bool nss_core_handle_linea
 		 * ingress shaped flag set.
 		 */
 		if (unlikely(desc->bit_flags & N2H_BIT_FLAG_INGRESS_SHAPED)) {
-			nbuf->tc_verd_qca_nss = SET_TC_NCLS_NSS(nbuf->tc_verd_qca_nss);
+			nss_core_set_skb_classify(nbuf);
 		}
 #endif
 
@@ -1332,7 +1348,7 @@ static inline bool nss_core_handle_linea
 		 * ingress shaped flag set.
 		 */
 		if (unlikely(desc->bit_flags & N2H_BIT_FLAG_INGRESS_SHAPED)) {
-			nbuf->tc_verd_qca_nss = SET_TC_NCLS_NSS(nbuf->tc_verd_qca_nss);
+			nss_core_set_skb_classify(nbuf);
 		}
 #endif
 
@@ -1702,7 +1718,7 @@ static void nss_core_init_nss(struct nss
 	if (nss_ctx->id) {
 		ret = nss_n2h_update_queue_config_async(nss_ctx, pn_mq_en, pn_qlimits);
 		if (ret != NSS_TX_SUCCESS) {
-			nss_warning("Failed to send pnode queue config to core 1\n");
+			nss_warning("%px: Failed to send pnode queue config to core 1\n", nss_ctx);
 		}
 		return;
 	}
@@ -1717,9 +1733,14 @@ static void nss_core_init_nss(struct nss
 		 * connections supported by the accelerator.
 		 */
 		nss_ipv4_conn_cfg = max_ipv4_conn;
+
+#ifdef NSS_DRV_IPV6_ENABLE
 		nss_ipv6_conn_cfg = max_ipv6_conn;
 		nss_ipv4_update_conn_count(max_ipv4_conn);
 		nss_ipv6_update_conn_count(max_ipv6_conn);
+#else
+		nss_ipv4_update_conn_count(max_ipv4_conn);
+#endif
 
 #ifdef NSS_MEM_PROFILE_LOW
 		/*
--- a/nss_core.h
+++ b/nss_core.h
@@ -232,6 +232,8 @@ static inline void nss_core_dma_cache_ma
  * INFO: The LOW and MAX value together describe the "performance" band that we should operate the frequency at.
  *
  */
+#define NSS_FREQ_SCALE_NA	0xFAADFAAD	/* Frequency scale not supported */
+
 #define NSS_FREQ_110		110000000	/* Frequency in hz */
 #define NSS_FREQ_110_MIN	0x03000		/* Instructions Per ms Min */
 #define NSS_FREQ_110_MAX	0x07000		/* Instructions Per ms Max */
--- 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_dma.c
+++ b/nss_dma.c
@@ -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
@@ -120,7 +120,7 @@ static void nss_dma_msg_handler(struct n
 	 */
 	if (ndm->cm.type == NSS_DMA_MSG_TYPE_SYNC_STATS) {
 		nss_dma_stats_sync(nss_ctx, &ndm->msg.stats);
-
+		nss_dma_stats_notify(nss_ctx);
 	}
 
 	/*
--- a/nss_dma_stats.c
+++ b/nss_dma_stats.c
@@ -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
@@ -17,10 +17,16 @@
  */
 
 #include "nss_core.h"
+#include "nss_dma.h"
 #include "nss_dma_stats.h"
 #include "nss_dma_strings.h"
 
 /*
+ * Declare atomic notifier data structure for statistics.
+ */
+ATOMIC_NOTIFIER_HEAD(nss_dma_stats_notifier);
+
+/*
  * Spinlock to protect DMA statistics update/read
  */
 DEFINE_SPINLOCK(nss_dma_stats_lock);
@@ -117,3 +123,41 @@ void nss_dma_stats_sync(struct nss_ctx_i
 
 	spin_unlock_bh(&nss_dma_stats_lock);
 }
+
+/*
+ * nss_dma_stats_notify()
+ *	Sends notifications to all the registered modules.
+ *
+ * Leverage NSS-FW statistics timing to update Netlink.
+ */
+void nss_dma_stats_notify(struct nss_ctx_instance *nss_ctx)
+{
+	struct nss_dma_stats_notification dma_stats;
+
+	spin_lock_bh(&nss_dma_stats_lock);
+	dma_stats.core_id = nss_ctx->id;
+	memcpy(dma_stats.stats_ctx, nss_dma_stats, sizeof(dma_stats.stats_ctx));
+	spin_unlock_bh(&nss_dma_stats_lock);
+
+	atomic_notifier_call_chain(&nss_dma_stats_notifier, NSS_STATS_EVENT_NOTIFY, &dma_stats);
+}
+
+/*
+ * nss_dma_stats_unregister_notifier()
+ *	Deregisters statistics notifier.
+ */
+int nss_dma_stats_unregister_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&nss_dma_stats_notifier, nb);
+}
+EXPORT_SYMBOL(nss_dma_stats_unregister_notifier);
+
+/*
+ * nss_dma_stats_register_notifier()
+ *	Registers statistics notifier.
+ */
+int nss_dma_stats_register_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_register(&nss_dma_stats_notifier, nb);
+}
+EXPORT_SYMBOL(nss_dma_stats_register_notifier);
--- a/nss_hal/ipq806x/nss_hal_pvt.c
+++ b/nss_hal/ipq806x/nss_hal_pvt.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2013, 2015-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013, 2015-2021, 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.
@@ -464,6 +464,7 @@ static struct nss_platform_data *__nss_h
 		goto out;
 	}
 
+	nss_assert(npd->vphys);
 	npd->vmap = ioremap_cache(npd->vphys, resource_size(&res_vphys));
 	if (!npd->vmap) {
 		nss_info_always("%px: nss%d: ioremap() fail for vphys\n", nss_ctx, nss_ctx->id);
--- a/nss_hal/nss_hal.c
+++ b/nss_hal/nss_hal.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.
@@ -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"
 
@@ -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) {
@@ -293,7 +288,6 @@ int nss_hal_probe(struct platform_device
 	 * Physical address of logical registers space
 	 */
 	nss_ctx->vphys = npd->vphys;
-	nss_assert(nss_ctx->vphys);
 	nss_info("%d:ctx=%px, vphys=%x, vmap=%px, nphys=%x, nmap=%px", nss_ctx->id,
 			nss_ctx, nss_ctx->vphys, nss_ctx->vmap, nss_ctx->nphys, nss_ctx->nmap);
 
@@ -364,8 +358,10 @@ int nss_hal_probe(struct platform_device
 		nss_top->ipv4_handler_id = nss_dev->id;
 		nss_ipv4_register_handler();
 
+#ifdef NSS_DRV_EDMA_ENABLE
 		nss_top->edma_handler_id = nss_dev->id;
 		nss_edma_register_handler();
+#endif
 		nss_eth_rx_register_handler(nss_ctx);
 #ifdef NSS_DRV_LAG_ENABLE
 		nss_lag_register_handler();
@@ -389,20 +385,27 @@ int nss_hal_probe(struct platform_device
 	}
 #endif
 #endif
+
+#ifdef NSS_DRV_IPV4_REASM_ENABLE
 	if (npd->ipv4_reasm_enabled == NSS_FEATURE_ENABLED) {
 		nss_top->ipv4_reasm_handler_id = nss_dev->id;
 		nss_ipv4_reasm_register_handler();
 	}
+#endif
 
+#ifdef NSS_DRV_IPV6_ENABLE
 	if (npd->ipv6_enabled == NSS_FEATURE_ENABLED) {
 		nss_top->ipv6_handler_id = nss_dev->id;
 		nss_ipv6_register_handler();
 	}
 
+#ifdef NSS_DRV_IPV6_REASM_ENABLE
 	if (npd->ipv6_reasm_enabled == NSS_FEATURE_ENABLED) {
 		nss_top->ipv6_reasm_handler_id = nss_dev->id;
 		nss_ipv6_reasm_register_handler();
 	}
+#endif
+#endif
 
 #ifdef NSS_DRV_CRYPTO_ENABLE
 	/*
@@ -583,11 +586,13 @@ int nss_hal_probe(struct platform_device
 	}
 #endif
 
+#ifdef NSS_DRV_BRIDGE_ENABLE
 	if (npd->bridge_enabled == NSS_FEATURE_ENABLED) {
 		nss_top->bridge_handler_id = nss_dev->id;
 		nss_top->dynamic_interface_table[NSS_DYNAMIC_INTERFACE_TYPE_BRIDGE] = nss_dev->id;
 		nss_bridge_init();
 	}
+#endif
 
 #ifdef NSS_DRV_VLAN_ENABLE
 	if (npd->vlan_enabled == NSS_FEATURE_ENABLED) {
--- a/nss_hlos_if.h
+++ b/nss_hlos_if.h
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2019, 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.
@@ -33,7 +33,11 @@
  */
 #if defined (NSS_MEM_PROFILE_LOW)
 #define NSS_DEFAULT_NUM_CONN			512		/* Default number of connections for IPv4 and IPv6 each, for low memory profile */
+#if defined (NSS_DRV_IPV6_ENABLE)
 #define NSS_MAX_TOTAL_NUM_CONN_IPV4_IPV6	1024		/* MAX Connection shared between IPv4 and IPv6 for low memory profile */
+#else
+#define NSS_MAX_TOTAL_NUM_CONN_IPV4_IPV6	512		/* MAX Connection for IPv4 for low memory profile */
+#endif
 #define NSS_LOW_MEM_EMPTY_POOL_BUF_SZ		4096		/* Default empty buffer pool size for low profile */
 #elif defined (NSS_MEM_PROFILE_MEDIUM)
 #define NSS_DEFAULT_NUM_CONN			2048		/* Default number of connections for IPv4 and IPv6 each, for medium memory profile */
--- a/nss_init.c
+++ b/nss_init.c
@@ -1,6 +1,6 @@
 /*
  **************************************************************************
- * Copyright (c) 2013-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2021, 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.
@@ -307,7 +307,9 @@ static int nss_get_freq_table_handler(st
 
 	i = 0;
 	while (i < NSS_FREQ_MAX_SCALE) {
-		printk("%d Hz ", nss_runtime_samples.freq_scale[i].frequency);
+		if (nss_runtime_samples.freq_scale[i].frequency != NSS_FREQ_SCALE_NA) {
+			printk("%d Hz ", nss_runtime_samples.freq_scale[i].frequency);
+		}
 		i++;
 	}
 	printk("\n");
@@ -738,7 +740,9 @@ static int __init nss_init(void)
 	 * Registering sysctl for ipv4/6 specific config.
 	 */
 	nss_ipv4_register_sysctl();
+#ifdef NSS_DRV_IPV6_ENABLE
 	nss_ipv6_register_sysctl();
+#endif
 
 	/*
 	 * Registering sysctl for n2h specific config.
@@ -911,16 +915,15 @@ static void __exit nss_cleanup(void)
 #endif
 
 	/*
-	 * Unregister ipv4/6 specific sysctl
+	 * Unregister ipv4/6 specific sysctl and free allocated to connection tables
 	 */
 	nss_ipv4_unregister_sysctl();
-	nss_ipv6_unregister_sysctl();
-
-	/*
-	 * Free Memory allocated for connection tables
-	 */
 	nss_ipv4_free_conn_tables();
+
+#ifdef NSS_DRV_IPV6_ENABLE
+	nss_ipv6_unregister_sysctl();
 	nss_ipv6_free_conn_tables();
+#endif
 
 	nss_project_unregister_sysctl();
 	nss_data_plane_destroy_delay_work();
--- a/nss_meminfo.c
+++ b/nss_meminfo.c
@@ -1,5 +1,5 @@
 /*
- * 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
@@ -311,6 +311,15 @@ static bool nss_meminfo_init_block_lists
 		switch (mtype) {
 		case NSS_MEMINFO_MEMTYPE_IMEM:
 			/*
+			 * For SOC's where TCM is not present
+			 */
+			if (!nss_ctx->vphys) {
+				nss_info_always("%px:IMEM requested but TCM not defined "
+								"for this SOC\n", nss_ctx);
+				goto cleanup;
+			}
+
+			/*
 			 * Return SoC real address for IMEM as DMA address.
 			 */
 			dma_addr = nss_meminfo_alloc_imem(nss_ctx, r->size, r->alignment);
@@ -453,6 +462,15 @@ static bool nss_meminfo_allocate_n2h_h2n
 		}
 		break;
 	case NSS_MEMINFO_MEMTYPE_IMEM:
+		/*
+		 * For SOC's where TCM is not present
+		 */
+		if (!nss_ctx->vphys) {
+			nss_info_always("%px:IMEM requested but TCM not defined "
+							"for this SOC\n", nss_ctx);
+			return false;
+		}
+
 		info->dma_addr = nss_meminfo_alloc_imem(nss_ctx, info->total_size, L1_CACHE_BYTES);
 		if (!info->dma_addr)
 			return false;
@@ -517,6 +535,13 @@ 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;
@@ -705,7 +730,6 @@ bool nss_meminfo_init(struct nss_ctx_ins
 	struct nss_meminfo_map *map;
 	struct nss_top_instance *nss_top = &nss_top_main;
 
-	NSS_VERIFY_CTX_MAGIC(nss_ctx);
 	mem_ctx = &nss_ctx->meminfo_ctx;
 
 	/*
--- a/nss_profiler.c
+++ b/nss_profiler.c
@@ -153,8 +153,10 @@ void nss_profiler_release_dma(struct nss
 
 	ctrl = nss_ctx->meminfo_ctx.sdma_ctrl;
 
-	if (ctrl && ctrl->consumer[0].ring.kp)
+	if (ctrl && ctrl->consumer[0].ring.kp) {
 		kfree(ctrl->consumer[0].ring.kp);
+		ctrl->consumer[0].ring.kp = NULL;
+	}
 }
 EXPORT_SYMBOL(nss_profiler_release_dma);
 
@@ -198,10 +200,12 @@ EXPORT_SYMBOL(nss_profile_dma_deregister
 struct nss_profile_sdma_ctrl *nss_profile_dma_get_ctrl(struct nss_ctx_instance *nss_ctx)
 {
 	struct nss_profile_sdma_ctrl *ctrl = nss_ctx->meminfo_ctx.sdma_ctrl;
-	if (ctrl) {
-		dmac_inv_range(ctrl, &ctrl->cidx);
-		dsb(sy);
+	if (!ctrl) {
+		return ctrl;
 	}
+
+	dmac_inv_range(ctrl, &ctrl->cidx);
+	dsb(sy);
 	return ctrl;
 }
 EXPORT_SYMBOL(nss_profile_dma_get_ctrl);
@@ -233,7 +237,7 @@ void nss_profiler_notify_unregister(nss_
 {
 	nss_assert(core_id < NSS_CORE_MAX);
 
-	nss_core_register_handler(&nss_top_main.nss[core_id], NSS_PROFILER_INTERFACE, NULL, NULL);
+	nss_core_unregister_handler(&nss_top_main.nss[core_id], NSS_PROFILER_INTERFACE);
 	nss_top_main.profiler_callback[core_id] = NULL;
 	nss_top_main.profiler_ctx[core_id] = NULL;
 }