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

 /*
  **************************************************************************
  * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
  * above copyright notice and this permission notice appear in all copies.
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  **************************************************************************
  */

 #include "nss_core.h"
 #include <nss_pppoe.h>
 #include "nss_pppoe_stats.h"
 #include "nss_pppoe_strings.h"

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

 /*
  * Lock used for PPPoE statistics
  */
 static DEFINE_SPINLOCK(nss_pppoe_stats_lock);

 /*
  * PPPoE session stats structure for debug interface
  */
 struct nss_pppoe_stats_session_stats {
 	uint64_t stats[NSS_PPPOE_STATS_SESSION_MAX];
 						/* stats for the session */
 	int32_t if_index;	/* net device index for the session */
 	uint32_t if_num;	/* nss interface number */
 	bool valid;			/* dynamic interface valid flag */
 };

 /*
  * PPPoE interface stats structure for base node and sessions
  */
 struct nss_pppoe_stats {
 	uint64_t base_stats[NSS_PPPOE_STATS_BASE_MAX];
 						/* Base node stats */
 	struct nss_pppoe_stats_session_stats session_stats[NSS_MAX_PPPOE_DYNAMIC_INTERFACES];
 					/* Per session stats */
 };

 /*
  * Global PPPoE stats decleration.
  */
 static struct nss_pppoe_stats pppoe_stats;

 /*
  * nss_pppoe_stats_read()
  *	Read pppoe statistics
  */
 static ssize_t nss_pppoe_stats_read(struct file *fp, char __user *ubuf, size_t sz, loff_t *ppos)
 {

 	uint32_t max_output_lines = 2 /* header & footer for session stats */
 					+ NSS_MAX_PPPOE_DYNAMIC_INTERFACES * (NSS_PPPOE_STATS_SESSION_MAX + 2) /*session stats */
 					+ 2 + NSS_PPPOE_STATS_BASE_MAX + 2;
 	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;
 	int id;

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

 	/*
 	 * Base node stats
 	 */
 	size_wr += nss_stats_print("pppoe", "pppoe base node stats start"
 					, NSS_STATS_SINGLE_INSTANCE
 					, nss_pppoe_strings_base_stats
 					, pppoe_stats.base_stats
 					, NSS_PPPOE_STATS_BASE_MAX
 					, lbuf, size_wr, size_al);

 	/*
 	 * Session stats
 	 */
 	for (id = 0; id < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; id++) {
 		if (!pppoe_stats.session_stats[id].valid) {
 			continue;
 		}

 		dev = dev_get_by_index(&init_net, pppoe_stats.session_stats[id].if_index);
 		if (unlikely(!dev)) {
 			continue;
 		}

 		size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, "%d. nss interface id=%d, netdevice=%s\n", id,
 				pppoe_stats.session_stats[id].if_num, dev->name);
 		dev_put(dev);

 		size_wr += nss_stats_print("pppoe", "pppoe session node stats"
 						, id
 						, nss_pppoe_strings_session_stats
 						, pppoe_stats.session_stats[id].stats
 						, NSS_PPPOE_STATS_SESSION_MAX
 						, lbuf, size_wr, size_al);
 	}

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

 	kfree(lbuf);
 	return bytes_read;
 }

 /*
  * nss_pppoe_stats_pppoe_session_init()
  *	Initialize the session statistics.
  */
 bool nss_pppoe_stats_pppoe_session_init(uint32_t if_num, struct net_device *dev)
 {
 	int i;

 	spin_lock_bh(&nss_pppoe_stats_lock);
 	for (i = 0; i < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; i++) {
 		if (!pppoe_stats.session_stats[i].valid) {
 			pppoe_stats.session_stats[i].valid = true;
 			pppoe_stats.session_stats[i].if_num = if_num;
 			pppoe_stats.session_stats[i].if_index = dev->ifindex;
 			spin_unlock_bh(&nss_pppoe_stats_lock);
 			return true;
 		}
 	}
 	spin_unlock_bh(&nss_pppoe_stats_lock);

 	return false;
 }

 /*
  * nss_pppoe_stats_pppoe_session_deinit()
  *	De-initialize the session's stats.
  */
 void nss_pppoe_stats_pppoe_session_deinit(uint32_t if_num)
 {
 	int i;

 	spin_lock_bh(&nss_pppoe_stats_lock);
 	for (i = 0; i < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; i++) {
 		if (pppoe_stats.session_stats[i].if_num == if_num) {
 			memset(&pppoe_stats.session_stats[i], 0, sizeof(pppoe_stats.session_stats[i]));
 		}
 	}
 	spin_unlock_bh(&nss_pppoe_stats_lock);
 }

 /*
  * nss_pppoe_stats_sync
  *	Per session debug stats for pppoe
  */
 void nss_pppoe_stats_sync(struct nss_ctx_instance *nss_ctx, struct nss_pppoe_sync_stats_msg *stats_msg, uint16_t if_num)
 {
 	int i;
 	spin_lock_bh(&nss_pppoe_stats_lock);
 	for (i = 0; i < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; i++) {
 		if (pppoe_stats.session_stats[i].if_num == if_num) {
 			int j;

 			/*
 			 * Sync PPPoE session stats.
 			 */
 			pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_RX_PACKETS] += stats_msg->session_stats.node.rx_packets;
 			pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_RX_BYTES] += stats_msg->session_stats.node.rx_bytes;
 			pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_TX_PACKETS] += stats_msg->session_stats.node.tx_packets;
 			pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_TX_BYTES] += stats_msg->session_stats.node.tx_bytes;
 			pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_WRONG_VERSION_OR_TYPE] += stats_msg->session_stats.exception[NSS_PPPOE_SESSION_EXCEPTION_EVENT_WRONG_VERSION_OR_TYPE];
 			pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_WRONG_CODE] += stats_msg->session_stats.exception[NSS_PPPOE_SESSION_EXCEPTION_EVENT_WRONG_CODE];
 			pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_UNSUPPORTED_PPP_PROTOCOL] += stats_msg->session_stats.exception[NSS_PPPOE_SESSION_EXCEPTION_EVENT_UNSUPPORTED_PPP_PROTOCOL];

 			/*
 			 * Sync PPPoE base node stats coming with this session's stats.
 			 */
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_RX_PACKETS] += stats_msg->base_stats.node.rx_packets;
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_RX_BYTES] += stats_msg->base_stats.node.rx_bytes;
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_TX_PACKETS] += stats_msg->base_stats.node.tx_packets;
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_TX_BYTES] += stats_msg->base_stats.node.tx_bytes;

 			for (j = 0; j < NSS_MAX_NUM_PRI; j++) {
 				pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_RX_QUEUE_0_DROPPED + j] += stats_msg->base_stats.node.rx_dropped[j];
 			}

 			/*
 			 * Sync PPPoE base exception stats coming with this session's stats.
 			 */
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_SHORT_PPPOE_HDR_LENGTH] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_SHORT_PPPOE_HDR_LENGTH];
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_SHORT_PACKET_LENGTH] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_SHORT_PACKET_LENGTH];
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_WRONG_VERSION_OR_TYPE] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_WRONG_VERSION_OR_TYPE];
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_WRONG_CODE] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_WRONG_CODE];
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_UNSUPPORTED_PPP_PROTOCOL] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_UNSUPPORTED_PPP_PROTOCOL];
 			pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_DISABLED_BRIDGE_PACKET] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_DISABLED_BRIDGE_PACKET];
 			break;
 		}
 	}
 	spin_unlock_bh(&nss_pppoe_stats_lock);
 }

 /*
  * nss_pppoe_stats_ops
  */
 NSS_STATS_DECLARE_FILE_OPERATIONS(pppoe);

 /*
  * nss_pppoe_stats_dentry_create()
  *	Create PPPoE node statistics debug entry.
  */
 void nss_pppoe_stats_dentry_create(void)
 {
 	nss_stats_create_dentry("pppoe", &nss_pppoe_stats_ops);
 }

 /*
  * nss_pppoe_stats_notify()
  *	Sends notifications to the registered modules.
  *
  * Leverage NSS-FW statistics timing to update Netlink.
  */
 void nss_pppoe_stats_notify(struct nss_ctx_instance *nss_ctx, uint32_t if_num)
 {
 	struct nss_pppoe_stats_notification nss_pppoe_stats;
 	int id;

 	for (id = 0; id < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; id++) {
 		if (pppoe_stats.session_stats[id].if_num == if_num) {
 			memcpy(&nss_pppoe_stats.session_stats, &pppoe_stats.session_stats[id].stats, sizeof(nss_pppoe_stats.session_stats));
 		}
 	}
 	memcpy(&nss_pppoe_stats.base_stats, &pppoe_stats.base_stats, sizeof(nss_pppoe_stats.base_stats));
 	nss_pppoe_stats.core_id = nss_ctx->id;
 	nss_pppoe_stats.if_num = if_num;
 	atomic_notifier_call_chain(&nss_pppoe_stats_notifier, NSS_STATS_EVENT_NOTIFY, (void *)&nss_pppoe_stats);
 }

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

 /*
  * nss_pppoe_stats_unregister_notifier()
  *	Deregisters statistics notifier.
  */
 int nss_pppoe_stats_unregister_notifier(struct notifier_block *nb)
 {
 	return atomic_notifier_chain_unregister(&nss_pppoe_stats_notifier, nb);
 }
 EXPORT_SYMBOL(nss_pppoe_stats_unregister_notifier);
	/*
	**************************************************************************
	* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
	* Permission to use, copy, modify, and/or distribute this software for
	* any purpose with or without fee is hereby granted, provided that the
	* above copyright notice and this permission notice appear in all copies.
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
	* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	**************************************************************************
	*/

	#include "nss_core.h"
	#include <nss_pppoe.h>
	#include "nss_pppoe_stats.h"
	#include "nss_pppoe_strings.h"

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

	/*
	* Lock used for PPPoE statistics
	*/
	static DEFINE_SPINLOCK(nss_pppoe_stats_lock);

	/*
	* PPPoE session stats structure for debug interface
	*/
	struct nss_pppoe_stats_session_stats {
	uint64_t stats[NSS_PPPOE_STATS_SESSION_MAX];
	/* stats for the session */
	int32_t if_index; /* net device index for the session */
	uint32_t if_num; /* nss interface number */
	bool valid; /* dynamic interface valid flag */
	};

	/*
	* PPPoE interface stats structure for base node and sessions
	*/
	struct nss_pppoe_stats {
	uint64_t base_stats[NSS_PPPOE_STATS_BASE_MAX];
	/* Base node stats */
	struct nss_pppoe_stats_session_stats session_stats[NSS_MAX_PPPOE_DYNAMIC_INTERFACES];
	/* Per session stats */
	};

	/*
	* Global PPPoE stats decleration.
	*/
	static struct nss_pppoe_stats pppoe_stats;

	/*
	* nss_pppoe_stats_read()
	* Read pppoe statistics
	*/
	static ssize_t nss_pppoe_stats_read(struct file fp, char __user ubuf, size_t sz, loff_t *ppos)
	{

	uint32_t max_output_lines = 2 /* header & footer for session stats */
	+ NSS_MAX_PPPOE_DYNAMIC_INTERFACES * (NSS_PPPOE_STATS_SESSION_MAX + 2) /session stats /
	+ 2 + NSS_PPPOE_STATS_BASE_MAX + 2;
	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;
	int id;

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

	/*
	* Base node stats
	*/
	size_wr += nss_stats_print("pppoe", "pppoe base node stats start"
	, NSS_STATS_SINGLE_INSTANCE
	, nss_pppoe_strings_base_stats
	, pppoe_stats.base_stats
	, NSS_PPPOE_STATS_BASE_MAX
	, lbuf, size_wr, size_al);

	/*
	* Session stats
	*/
	for (id = 0; id < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; id++) {
	if (!pppoe_stats.session_stats[id].valid) {
	continue;
	}

	dev = dev_get_by_index(&init_net, pppoe_stats.session_stats[id].if_index);
	if (unlikely(!dev)) {
	continue;
	}

	size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, "%d. nss interface id=%d, netdevice=%s\n", id,
	pppoe_stats.session_stats[id].if_num, dev->name);
	dev_put(dev);

	size_wr += nss_stats_print("pppoe", "pppoe session node stats"
	, id
	, nss_pppoe_strings_session_stats
	, pppoe_stats.session_stats[id].stats
	, NSS_PPPOE_STATS_SESSION_MAX
	, lbuf, size_wr, size_al);
	}

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

	kfree(lbuf);
	return bytes_read;
	}

	/*
	* nss_pppoe_stats_pppoe_session_init()
	* Initialize the session statistics.
	*/
	bool nss_pppoe_stats_pppoe_session_init(uint32_t if_num, struct net_device *dev)
	{
	int i;

	spin_lock_bh(&nss_pppoe_stats_lock);
	for (i = 0; i < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; i++) {
	if (!pppoe_stats.session_stats[i].valid) {
	pppoe_stats.session_stats[i].valid = true;
	pppoe_stats.session_stats[i].if_num = if_num;
	pppoe_stats.session_stats[i].if_index = dev->ifindex;
	spin_unlock_bh(&nss_pppoe_stats_lock);
	return true;
	}
	}
	spin_unlock_bh(&nss_pppoe_stats_lock);

	return false;
	}

	/*
	* nss_pppoe_stats_pppoe_session_deinit()
	* De-initialize the session's stats.
	*/
	void nss_pppoe_stats_pppoe_session_deinit(uint32_t if_num)
	{
	int i;

	spin_lock_bh(&nss_pppoe_stats_lock);
	for (i = 0; i < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; i++) {
	if (pppoe_stats.session_stats[i].if_num == if_num) {
	memset(&pppoe_stats.session_stats[i], 0, sizeof(pppoe_stats.session_stats[i]));
	}
	}
	spin_unlock_bh(&nss_pppoe_stats_lock);
	}

	/*
	* nss_pppoe_stats_sync
	* Per session debug stats for pppoe
	*/
	void nss_pppoe_stats_sync(struct nss_ctx_instance nss_ctx, struct nss_pppoe_sync_stats_msg stats_msg, uint16_t if_num)
	{
	int i;
	spin_lock_bh(&nss_pppoe_stats_lock);
	for (i = 0; i < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; i++) {
	if (pppoe_stats.session_stats[i].if_num == if_num) {
	int j;

	/*
	* Sync PPPoE session stats.
	*/
	pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_RX_PACKETS] += stats_msg->session_stats.node.rx_packets;
	pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_RX_BYTES] += stats_msg->session_stats.node.rx_bytes;
	pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_TX_PACKETS] += stats_msg->session_stats.node.tx_packets;
	pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_TX_BYTES] += stats_msg->session_stats.node.tx_bytes;
	pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_WRONG_VERSION_OR_TYPE] += stats_msg->session_stats.exception[NSS_PPPOE_SESSION_EXCEPTION_EVENT_WRONG_VERSION_OR_TYPE];
	pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_WRONG_CODE] += stats_msg->session_stats.exception[NSS_PPPOE_SESSION_EXCEPTION_EVENT_WRONG_CODE];
	pppoe_stats.session_stats[i].stats[NSS_PPPOE_STATS_SESSION_UNSUPPORTED_PPP_PROTOCOL] += stats_msg->session_stats.exception[NSS_PPPOE_SESSION_EXCEPTION_EVENT_UNSUPPORTED_PPP_PROTOCOL];

	/*
	* Sync PPPoE base node stats coming with this session's stats.
	*/
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_RX_PACKETS] += stats_msg->base_stats.node.rx_packets;
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_RX_BYTES] += stats_msg->base_stats.node.rx_bytes;
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_TX_PACKETS] += stats_msg->base_stats.node.tx_packets;
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_TX_BYTES] += stats_msg->base_stats.node.tx_bytes;

	for (j = 0; j < NSS_MAX_NUM_PRI; j++) {
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_RX_QUEUE_0_DROPPED + j] += stats_msg->base_stats.node.rx_dropped[j];
	}

	/*
	* Sync PPPoE base exception stats coming with this session's stats.
	*/
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_SHORT_PPPOE_HDR_LENGTH] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_SHORT_PPPOE_HDR_LENGTH];
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_SHORT_PACKET_LENGTH] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_SHORT_PACKET_LENGTH];
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_WRONG_VERSION_OR_TYPE] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_WRONG_VERSION_OR_TYPE];
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_WRONG_CODE] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_WRONG_CODE];
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_UNSUPPORTED_PPP_PROTOCOL] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_UNSUPPORTED_PPP_PROTOCOL];
	pppoe_stats.base_stats[NSS_PPPOE_STATS_BASE_DISABLED_BRIDGE_PACKET] += stats_msg->base_stats.exception[NSS_PPPOE_BASE_EXCEPTION_EVENT_DISABLED_BRIDGE_PACKET];
	break;
	}
	}
	spin_unlock_bh(&nss_pppoe_stats_lock);
	}

	/*
	* nss_pppoe_stats_ops
	*/
	NSS_STATS_DECLARE_FILE_OPERATIONS(pppoe);

	/*
	* nss_pppoe_stats_dentry_create()
	* Create PPPoE node statistics debug entry.
	*/
	void nss_pppoe_stats_dentry_create(void)
	{
	nss_stats_create_dentry("pppoe", &nss_pppoe_stats_ops);
	}

	/*
	* nss_pppoe_stats_notify()
	* Sends notifications to the registered modules.
	*
	* Leverage NSS-FW statistics timing to update Netlink.
	*/
	void nss_pppoe_stats_notify(struct nss_ctx_instance *nss_ctx, uint32_t if_num)
	{
	struct nss_pppoe_stats_notification nss_pppoe_stats;
	int id;

	for (id = 0; id < NSS_MAX_PPPOE_DYNAMIC_INTERFACES; id++) {
	if (pppoe_stats.session_stats[id].if_num == if_num) {
	memcpy(&nss_pppoe_stats.session_stats, &pppoe_stats.session_stats[id].stats, sizeof(nss_pppoe_stats.session_stats));
	}
	}
	memcpy(&nss_pppoe_stats.base_stats, &pppoe_stats.base_stats, sizeof(nss_pppoe_stats.base_stats));
	nss_pppoe_stats.core_id = nss_ctx->id;
	nss_pppoe_stats.if_num = if_num;
	atomic_notifier_call_chain(&nss_pppoe_stats_notifier, NSS_STATS_EVENT_NOTIFY, (void *)&nss_pppoe_stats);
	}

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

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