qca-nss-drv/nss_clmap_stats.c - manifest_repos/sdk - Git at Google

 /*
  **************************************************************************
  * 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.
  * 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.
  **************************************************************************
  */

 #include "nss_tx_rx_common.h"
 #include "nss_clmap.h"
 #include "nss_clmap_stats.h"
 #include "nss_clmap_strings.h"

 /*
  * Declare atomic notifier data structure for statistics.
  */
 ATOMIC_NOTIFIER_HEAD(nss_clmap_stats_notifier);

 /*
  * Spinlock to protect clmap statistics update/read
  */
 DEFINE_SPINLOCK(nss_clmap_stats_lock);

 struct nss_clmap_stats *stats_db[NSS_CLMAP_MAX_DEBUG_INTERFACES] = {NULL};

 /*
  * nss_clmap_interface_type_str
  *	Clmap interface type string.
  */
 static char *nss_clmap_interface_type_str[NSS_CLMAP_INTERFACE_TYPE_MAX] = {
 	"Upstream",
 	"Downstream"
 };

 /*
  * nss_clmap_stats_session_unregister
  *	Unregister debug statistic for clmap session.
  */
 void nss_clmap_stats_session_unregister(uint32_t if_num)
 {
 	uint32_t i;

 	spin_lock_bh(&nss_clmap_stats_lock);
 	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
 		if (stats_db[i] && (stats_db[i]->nss_if_num == if_num)) {
 			kfree(stats_db[i]);
 			stats_db[i] = NULL;
 			break;
 		}
 	}
 	spin_unlock_bh(&nss_clmap_stats_lock);
 }

 /*
  * nss_clmap_stats_session_register
  * 	Register debug statistic for clmap session.
  */
 bool nss_clmap_stats_session_register(uint32_t if_num, uint32_t if_type, struct net_device *netdev)
 {
 	uint32_t i;
 	bool stats_status = false;

 	if (!netdev) {
 		nss_warning("Could not allocate statistics memory as the net device is NULL!\n");
 		return stats_status;
 	}

 	spin_lock_bh(&nss_clmap_stats_lock);
 	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
 		if (!stats_db[i]) {
 			stats_db[i] = (struct nss_clmap_stats *)kzalloc(sizeof(struct nss_clmap_stats), GFP_KERNEL);
 			if (!stats_db[i]) {
 				nss_warning("%px: could not allocate memory for statistics database for interface id: %d\n", netdev, if_num);
 				break;
 			}
 			stats_db[i]->valid = true;
 			stats_db[i]->nss_if_num = if_num;
 			stats_db[i]->nss_if_type = if_type;
 			stats_db[i]->if_index = netdev->ifindex;
 			stats_status = true;
 			break;
 		}
 	}
 	spin_unlock_bh(&nss_clmap_stats_lock);
 	return stats_status;
 }

 /*
  * nss_clmap_get_debug_stats()
  *	Get clmap debug statistics.
  */
 static int nss_clmap_get_debug_stats(struct nss_clmap_stats *stats)
 {
 	uint32_t i;
 	int interface_cnt = 0;

 	spin_lock_bh(&nss_clmap_stats_lock);
 	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
 		if (stats_db[i]) {
 			memcpy(stats, stats_db[i], sizeof(struct nss_clmap_stats));
 			stats++;
 			interface_cnt++;
 		}
 	}
 	spin_unlock_bh(&nss_clmap_stats_lock);

 	return interface_cnt;
 }

 /*
  * nss_clmap_stats_read()
  *	Read clmap statistics
  */
 static ssize_t nss_clmap_stats_read(struct file *fp, char __user *ubuf,
 					size_t sz, loff_t *ppos)
 {
 	uint32_t max_output_lines = (NSS_CLMAP_INTERFACE_STATS_MAX * NSS_CLMAP_MAX_DEBUG_INTERFACES) + NSS_STATS_EXTRA_OUTPUT_LINES;
 	size_t size_al = NSS_STATS_MAX_STR_LENGTH * max_output_lines;
 	size_t size_wr = 0;
 	ssize_t bytes_read = 0;
 	struct net_device *dev;
 	uint32_t id;
 	struct nss_clmap_stats *clmap_stats = NULL;
 	int interface_cnt;

 	char *lbuf = kzalloc(size_al, GFP_KERNEL);
 	if (unlikely(!lbuf)) {
 		nss_warning("Could not allocate memory for local statistics buffer");
 		return 0;
 	}

 	/*
 	 * Allocate statistics memory only for all interfaces.
 	 */
 	clmap_stats = kzalloc((NSS_CLMAP_MAX_DEBUG_INTERFACES * sizeof(struct nss_clmap_stats)), GFP_KERNEL);
 	if (unlikely(!clmap_stats)) {
 		nss_warning("Could not allocate memory for populating clmap statistics\n");
 		kfree(lbuf);
 		return 0;
 	}

 	/*
 	 * Get clmap statistics.
 	 */
 	interface_cnt = nss_clmap_get_debug_stats(clmap_stats);
 	size_wr += nss_stats_banner(lbuf, size_wr, size_al, "clmap stats", NSS_STATS_SINGLE_CORE);
 	for (id = 0; id < interface_cnt; id++) {
 		struct nss_clmap_stats *clmsp = clmap_stats + id;

 		if (unlikely(!clmsp->valid)) {
 			continue;
 		}

 		dev = dev_get_by_index(&init_net, clmsp->if_index);
 		if (unlikely(!dev)) {
 			nss_warning("No netdev available for nss interface id:%d\n", clmsp->nss_if_num);
 			continue;
 		}

 		size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, "%d. nss interface id=%d, interface type=%s, netdevice=%s\n", id,
 				clmsp->nss_if_num, nss_clmap_interface_type_str[clmsp->nss_if_type], dev->name);
 		dev_put(dev);

 		size_wr += nss_stats_print("clmap", NULL, NSS_STATS_SINGLE_INSTANCE, nss_clmap_strings_stats,
 						clmsp->stats, NSS_CLMAP_INTERFACE_STATS_MAX, lbuf, size_wr, size_al);
 	}

 	bytes_read = simple_read_from_buffer(ubuf, sz, ppos, lbuf, size_wr);

 	kfree(clmap_stats);
 	kfree(lbuf);
 	return bytes_read;
 }

 /*
  * nss_clmap_stats_sync()
  *	Sync function for clmap statistics
  */
 void nss_clmap_stats_sync(struct nss_ctx_instance *nss_ctx, struct nss_clmap_stats_msg *stats_msg, uint32_t if_num)
 {
 	uint32_t i;
 	struct nss_clmap_stats *s = NULL;

 	NSS_VERIFY_CTX_MAGIC(nss_ctx);

 	spin_lock_bh(&nss_clmap_stats_lock);
 	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
 		if (stats_db[i] && (stats_db[i]->nss_if_num == if_num)) {
 			s = stats_db[i];
 			break;
 		}
 	}

 	if (!s) {
 		spin_unlock_bh(&nss_clmap_stats_lock);
 		nss_warning("%px: Interface not found: %u", nss_ctx, if_num);
 		return;
 	}

         s->stats[NSS_CLMAP_INTERFACE_STATS_RX_PKTS] += stats_msg->node_stats.rx_packets;
         s->stats[NSS_CLMAP_INTERFACE_STATS_RX_BYTES] += stats_msg->node_stats.rx_bytes;
         s->stats[NSS_CLMAP_INTERFACE_STATS_TX_PKTS] += stats_msg->node_stats.tx_packets;
         s->stats[NSS_CLMAP_INTERFACE_STATS_TX_BYTES] += stats_msg->node_stats.tx_bytes;

 	for (i = 0; i < NSS_MAX_NUM_PRI; i++) {
 		s->stats[NSS_CLMAP_INTERFACE_STATS_RX_QUEUE_0_DROPPED + i] += stats_msg->node_stats.rx_dropped[i];
 	}

 	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_MACDB_LOOKUP_FAILED] += stats_msg->dropped_macdb_lookup_failed;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_INVALID_PACKET_SIZE] += stats_msg->dropped_invalid_packet_size;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_LOW_HEADROOM] += stats_msg->dropped_low_hroom;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_NEXT_NODE_QUEUE_FULL] += stats_msg->dropped_next_node_queue_full;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_PBUF_ALLOC_FAILED] += stats_msg->dropped_pbuf_alloc_failed;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_LINEAR_FAILED] += stats_msg->dropped_linear_failed;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_SHARED_PACKET_CNT] += stats_msg->shared_packet_count;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_ETHERNET_FRAME_ERROR] += stats_msg->ethernet_frame_error;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_CREATE_REQUESTS_CNT] += stats_msg->macdb_create_requests;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_CREATE_MAC_EXISTS_CNT] += stats_msg->macdb_create_mac_exists;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_CREATE_MAC_TABLE_FULL_CNT] += stats_msg->macdb_create_table_full;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_DESTROY_REQUESTS_CNT] += stats_msg->macdb_destroy_requests;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_DESTROY_MAC_NOT_FOUND_CNT] += stats_msg->macdb_destroy_mac_notfound;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_DESTROY_MAC_UNHASHED_CNT] += stats_msg->macdb_destroy_mac_unhashed;
 	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_FLUSH_REQUESTS_CNT] += stats_msg->macdb_flush_requests;
 	spin_unlock_bh(&nss_clmap_stats_lock);
 }

 /*
  * nss_clmap_stats_ops
  */
 NSS_STATS_DECLARE_FILE_OPERATIONS(clmap)

 /*
  * nss_clmap_stats_dentry_create()
  *	Create client map statistics debug entry.
  */
 void nss_clmap_stats_dentry_create(void)
 {
 	nss_stats_create_dentry("clmap", &nss_clmap_stats_ops);
 }

 /*
  * nss_clmap_stats_notify()
  *	Sends notifications to all the registered modules.
  *
  * Leverage NSS-FW statistics timing to update Netlink.
  */
 void nss_clmap_stats_notify(struct nss_ctx_instance *nss_ctx, uint32_t if_num)
 {
 	struct nss_clmap_stats_notification clmap_stats;
 	struct nss_clmap_stats *s = NULL;
 	int i;

 	spin_lock_bh(&nss_clmap_stats_lock);
 	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
 		if (!stats_db[i] || (stats_db[i]->nss_if_num != if_num)) {
 			continue;
 		}

 		s = stats_db[i];
 		clmap_stats.core_id = nss_ctx->id;
 		clmap_stats.if_num = if_num;
 		memcpy(clmap_stats.stats_ctx, s->stats, sizeof(clmap_stats.stats_ctx));
 		spin_unlock_bh(&nss_clmap_stats_lock);
 		atomic_notifier_call_chain(&nss_clmap_stats_notifier, NSS_STATS_EVENT_NOTIFY, &clmap_stats);
 		return;
 	}
 	spin_unlock_bh(&nss_clmap_stats_lock);
 }

 /*
  * nss_clmap_stats_unregister_notifier()
  *	Deregisters statistics notifier.
  */
 int nss_clmap_stats_unregister_notifier(struct notifier_block *nb)
 {
 	return atomic_notifier_chain_unregister(&nss_clmap_stats_notifier, nb);
 }
 EXPORT_SYMBOL(nss_clmap_stats_unregister_notifier);

 /*
  * nss_clmap_stats_register_notifier()
  *	Registers statistics notifier.
  */
 int nss_clmap_stats_register_notifier(struct notifier_block *nb)
 {
 	return atomic_notifier_chain_register(&nss_clmap_stats_notifier, nb);
 }
 EXPORT_SYMBOL(nss_clmap_stats_register_notifier);
	/*
	**************************************************************************
	* 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.
	* 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.
	**************************************************************************
	*/

	#include "nss_tx_rx_common.h"
	#include "nss_clmap.h"
	#include "nss_clmap_stats.h"
	#include "nss_clmap_strings.h"

	/*
	* Declare atomic notifier data structure for statistics.
	*/
	ATOMIC_NOTIFIER_HEAD(nss_clmap_stats_notifier);

	/*
	* Spinlock to protect clmap statistics update/read
	*/
	DEFINE_SPINLOCK(nss_clmap_stats_lock);

	struct nss_clmap_stats *stats_db[NSS_CLMAP_MAX_DEBUG_INTERFACES] = {NULL};

	/*
	* nss_clmap_interface_type_str
	* Clmap interface type string.
	*/
	static char *nss_clmap_interface_type_str[NSS_CLMAP_INTERFACE_TYPE_MAX] = {
	"Upstream",
	"Downstream"
	};

	/*
	* nss_clmap_stats_session_unregister
	* Unregister debug statistic for clmap session.
	*/
	void nss_clmap_stats_session_unregister(uint32_t if_num)
	{
	uint32_t i;

	spin_lock_bh(&nss_clmap_stats_lock);
	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
	if (stats_db[i] && (stats_db[i]->nss_if_num == if_num)) {
	kfree(stats_db[i]);
	stats_db[i] = NULL;
	break;
	}
	}
	spin_unlock_bh(&nss_clmap_stats_lock);
	}

	/*
	* nss_clmap_stats_session_register
	* Register debug statistic for clmap session.
	*/
	bool nss_clmap_stats_session_register(uint32_t if_num, uint32_t if_type, struct net_device *netdev)
	{
	uint32_t i;
	bool stats_status = false;

	if (!netdev) {
	nss_warning("Could not allocate statistics memory as the net device is NULL!\n");
	return stats_status;
	}

	spin_lock_bh(&nss_clmap_stats_lock);
	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
	if (!stats_db[i]) {
	stats_db[i] = (struct nss_clmap_stats *)kzalloc(sizeof(struct nss_clmap_stats), GFP_KERNEL);
	if (!stats_db[i]) {
	nss_warning("%px: could not allocate memory for statistics database for interface id: %d\n", netdev, if_num);
	break;
	}
	stats_db[i]->valid = true;
	stats_db[i]->nss_if_num = if_num;
	stats_db[i]->nss_if_type = if_type;
	stats_db[i]->if_index = netdev->ifindex;
	stats_status = true;
	break;
	}
	}
	spin_unlock_bh(&nss_clmap_stats_lock);
	return stats_status;
	}

	/*
	* nss_clmap_get_debug_stats()
	* Get clmap debug statistics.
	*/
	static int nss_clmap_get_debug_stats(struct nss_clmap_stats *stats)
	{
	uint32_t i;
	int interface_cnt = 0;

	spin_lock_bh(&nss_clmap_stats_lock);
	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
	if (stats_db[i]) {
	memcpy(stats, stats_db[i], sizeof(struct nss_clmap_stats));
	stats++;
	interface_cnt++;
	}
	}
	spin_unlock_bh(&nss_clmap_stats_lock);

	return interface_cnt;
	}

	/*
	* nss_clmap_stats_read()
	* Read clmap statistics
	*/
	static ssize_t nss_clmap_stats_read(struct file fp, char __user ubuf,
	size_t sz, loff_t *ppos)
	{
	uint32_t max_output_lines = (NSS_CLMAP_INTERFACE_STATS_MAX * NSS_CLMAP_MAX_DEBUG_INTERFACES) + NSS_STATS_EXTRA_OUTPUT_LINES;
	size_t size_al = NSS_STATS_MAX_STR_LENGTH * max_output_lines;
	size_t size_wr = 0;
	ssize_t bytes_read = 0;
	struct net_device *dev;
	uint32_t id;
	struct nss_clmap_stats *clmap_stats = NULL;
	int interface_cnt;

	char *lbuf = kzalloc(size_al, GFP_KERNEL);
	if (unlikely(!lbuf)) {
	nss_warning("Could not allocate memory for local statistics buffer");
	return 0;
	}

	/*
	* Allocate statistics memory only for all interfaces.
	*/
	clmap_stats = kzalloc((NSS_CLMAP_MAX_DEBUG_INTERFACES * sizeof(struct nss_clmap_stats)), GFP_KERNEL);
	if (unlikely(!clmap_stats)) {
	nss_warning("Could not allocate memory for populating clmap statistics\n");
	kfree(lbuf);
	return 0;
	}

	/*
	* Get clmap statistics.
	*/
	interface_cnt = nss_clmap_get_debug_stats(clmap_stats);
	size_wr += nss_stats_banner(lbuf, size_wr, size_al, "clmap stats", NSS_STATS_SINGLE_CORE);
	for (id = 0; id < interface_cnt; id++) {
	struct nss_clmap_stats *clmsp = clmap_stats + id;

	if (unlikely(!clmsp->valid)) {
	continue;
	}

	dev = dev_get_by_index(&init_net, clmsp->if_index);
	if (unlikely(!dev)) {
	nss_warning("No netdev available for nss interface id:%d\n", clmsp->nss_if_num);
	continue;
	}

	size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, "%d. nss interface id=%d, interface type=%s, netdevice=%s\n", id,
	clmsp->nss_if_num, nss_clmap_interface_type_str[clmsp->nss_if_type], dev->name);
	dev_put(dev);

	size_wr += nss_stats_print("clmap", NULL, NSS_STATS_SINGLE_INSTANCE, nss_clmap_strings_stats,
	clmsp->stats, NSS_CLMAP_INTERFACE_STATS_MAX, lbuf, size_wr, size_al);
	}

	bytes_read = simple_read_from_buffer(ubuf, sz, ppos, lbuf, size_wr);

	kfree(clmap_stats);
	kfree(lbuf);
	return bytes_read;
	}

	/*
	* nss_clmap_stats_sync()
	* Sync function for clmap statistics
	*/
	void nss_clmap_stats_sync(struct nss_ctx_instance nss_ctx, struct nss_clmap_stats_msg stats_msg, uint32_t if_num)
	{
	uint32_t i;
	struct nss_clmap_stats *s = NULL;

	NSS_VERIFY_CTX_MAGIC(nss_ctx);

	spin_lock_bh(&nss_clmap_stats_lock);
	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
	if (stats_db[i] && (stats_db[i]->nss_if_num == if_num)) {
	s = stats_db[i];
	break;
	}
	}

	if (!s) {
	spin_unlock_bh(&nss_clmap_stats_lock);
	nss_warning("%px: Interface not found: %u", nss_ctx, if_num);
	return;
	}

	s->stats[NSS_CLMAP_INTERFACE_STATS_RX_PKTS] += stats_msg->node_stats.rx_packets;
	s->stats[NSS_CLMAP_INTERFACE_STATS_RX_BYTES] += stats_msg->node_stats.rx_bytes;
	s->stats[NSS_CLMAP_INTERFACE_STATS_TX_PKTS] += stats_msg->node_stats.tx_packets;
	s->stats[NSS_CLMAP_INTERFACE_STATS_TX_BYTES] += stats_msg->node_stats.tx_bytes;

	for (i = 0; i < NSS_MAX_NUM_PRI; i++) {
	s->stats[NSS_CLMAP_INTERFACE_STATS_RX_QUEUE_0_DROPPED + i] += stats_msg->node_stats.rx_dropped[i];
	}

	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_MACDB_LOOKUP_FAILED] += stats_msg->dropped_macdb_lookup_failed;
	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_INVALID_PACKET_SIZE] += stats_msg->dropped_invalid_packet_size;
	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_LOW_HEADROOM] += stats_msg->dropped_low_hroom;
	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_NEXT_NODE_QUEUE_FULL] += stats_msg->dropped_next_node_queue_full;
	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_PBUF_ALLOC_FAILED] += stats_msg->dropped_pbuf_alloc_failed;
	s->stats[NSS_CLMAP_INTERFACE_STATS_DROPPED_LINEAR_FAILED] += stats_msg->dropped_linear_failed;
	s->stats[NSS_CLMAP_INTERFACE_STATS_SHARED_PACKET_CNT] += stats_msg->shared_packet_count;
	s->stats[NSS_CLMAP_INTERFACE_STATS_ETHERNET_FRAME_ERROR] += stats_msg->ethernet_frame_error;
	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_CREATE_REQUESTS_CNT] += stats_msg->macdb_create_requests;
	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_CREATE_MAC_EXISTS_CNT] += stats_msg->macdb_create_mac_exists;
	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_CREATE_MAC_TABLE_FULL_CNT] += stats_msg->macdb_create_table_full;
	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_DESTROY_REQUESTS_CNT] += stats_msg->macdb_destroy_requests;
	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_DESTROY_MAC_NOT_FOUND_CNT] += stats_msg->macdb_destroy_mac_notfound;
	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_DESTROY_MAC_UNHASHED_CNT] += stats_msg->macdb_destroy_mac_unhashed;
	s->stats[NSS_CLMAP_INTERFACE_STATS_MACDB_FLUSH_REQUESTS_CNT] += stats_msg->macdb_flush_requests;
	spin_unlock_bh(&nss_clmap_stats_lock);
	}

	/*
	* nss_clmap_stats_ops
	*/
	NSS_STATS_DECLARE_FILE_OPERATIONS(clmap)

	/*
	* nss_clmap_stats_dentry_create()
	* Create client map statistics debug entry.
	*/
	void nss_clmap_stats_dentry_create(void)
	{
	nss_stats_create_dentry("clmap", &nss_clmap_stats_ops);
	}

	/*
	* nss_clmap_stats_notify()
	* Sends notifications to all the registered modules.
	*
	* Leverage NSS-FW statistics timing to update Netlink.
	*/
	void nss_clmap_stats_notify(struct nss_ctx_instance *nss_ctx, uint32_t if_num)
	{
	struct nss_clmap_stats_notification clmap_stats;
	struct nss_clmap_stats *s = NULL;
	int i;

	spin_lock_bh(&nss_clmap_stats_lock);
	for (i = 0; i < NSS_CLMAP_MAX_DEBUG_INTERFACES; i++) {
	if (!stats_db[i] \|\| (stats_db[i]->nss_if_num != if_num)) {
	continue;
	}

	s = stats_db[i];
	clmap_stats.core_id = nss_ctx->id;
	clmap_stats.if_num = if_num;
	memcpy(clmap_stats.stats_ctx, s->stats, sizeof(clmap_stats.stats_ctx));
	spin_unlock_bh(&nss_clmap_stats_lock);
	atomic_notifier_call_chain(&nss_clmap_stats_notifier, NSS_STATS_EVENT_NOTIFY, &clmap_stats);
	return;
	}
	spin_unlock_bh(&nss_clmap_stats_lock);
	}

	/*
	* nss_clmap_stats_unregister_notifier()
	* Deregisters statistics notifier.
	*/
	int nss_clmap_stats_unregister_notifier(struct notifier_block *nb)
	{
	return atomic_notifier_chain_unregister(&nss_clmap_stats_notifier, nb);
	}
	EXPORT_SYMBOL(nss_clmap_stats_unregister_notifier);

	/*
	* nss_clmap_stats_register_notifier()
	* Registers statistics notifier.
	*/
	int nss_clmap_stats_register_notifier(struct notifier_block *nb)
	{
	return atomic_notifier_chain_register(&nss_clmap_stats_notifier, nb);
	}
	EXPORT_SYMBOL(nss_clmap_stats_register_notifier);