qca-nss-drv/nss_n2h_stats.c - manifest_repos/sdk - Git at Google

 /*
  **************************************************************************
  * Copyright (c) 2017-2020, 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_n2h_stats.h"
 #include "nss_n2h.h"
 #include "nss_n2h_strings.h"

 /*
  * Declare atomic notifier data structure for statistics.
  */
 ATOMIC_NOTIFIER_HEAD(nss_n2h_stats_notifier);

 uint64_t nss_n2h_stats[NSS_MAX_CORES][NSS_N2H_STATS_MAX];

 /*
  * nss_n2h_stats_read()
  *	Read N2H stats
  */
 static ssize_t nss_n2h_stats_read(struct file *fp, char __user *ubuf, size_t sz, loff_t *ppos)
 {
 	int32_t i, core;

 	/*
 	 * Max output lines = #stats + few blank lines for banner printing +
 	 * Number of Extra outputlines for future reference to add new stats
 	 */
 	uint32_t max_output_lines = (NSS_N2H_STATS_MAX + 3) * NSS_MAX_CORES + 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;
 	uint64_t *stats_shadow;

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

 	stats_shadow = kzalloc(NSS_N2H_STATS_MAX * 8, GFP_KERNEL);
 	if (unlikely(stats_shadow == NULL)) {
 		nss_warning("Could not allocate memory for local shadow buffer");
 		kfree(lbuf);
 		return 0;
 	}

 	/*
 	 * N2H node stats
 	 */
 	for (core = 0; core < nss_top_main.num_nss; core++) {
 		spin_lock_bh(&nss_top_main.stats_lock);
 		for (i = 0; i < NSS_N2H_STATS_MAX; i++) {
 			stats_shadow[i] = nss_n2h_stats[core][i];
 		}
 		spin_unlock_bh(&nss_top_main.stats_lock);
 		size_wr += nss_stats_banner(lbuf, size_wr, size_al, "n2h", core);
 		size_wr += nss_stats_print("n2h", NULL, NSS_STATS_SINGLE_INSTANCE
 						, nss_n2h_strings_stats
 						, stats_shadow
 						, NSS_N2H_STATS_MAX
 						, lbuf, size_wr, size_al);
 	}

 	bytes_read = simple_read_from_buffer(ubuf, sz, ppos, lbuf, strlen(lbuf));
 	kfree(lbuf);
 	kfree(stats_shadow);

 	return bytes_read;
 }

 /*
  * nss_n2h_stats_ops
  */
 NSS_STATS_DECLARE_FILE_OPERATIONS(n2h);

 /*
  * nss_n2h_stats_dentry_create()
  *	Create N2H statistics debug entry.
  */
 void nss_n2h_stats_dentry_create(void)
 {
 	nss_stats_create_dentry("n2h", &nss_n2h_stats_ops);
 }

 /*
  * nss_n2h_stats_sync()
  *	Handle the syncing of NSS statistics.
  */
 void nss_n2h_stats_sync(struct nss_ctx_instance *nss_ctx, struct nss_n2h_stats_sync *nnss)
 {
 	struct nss_top_instance *nss_top = nss_ctx->nss_top;
 	int id = nss_ctx->id;
 	int j;

 	spin_lock_bh(&nss_top->stats_lock);

 	/*
 	 * common node stats
 	 */
 	nss_n2h_stats[id][NSS_STATS_NODE_RX_PKTS] += nnss->node_stats.rx_packets;
 	nss_n2h_stats[id][NSS_STATS_NODE_RX_BYTES] += nnss->node_stats.rx_bytes;
 	nss_n2h_stats[id][NSS_STATS_NODE_TX_PKTS] += nnss->node_stats.tx_packets;
 	nss_n2h_stats[id][NSS_STATS_NODE_TX_BYTES] += nnss->node_stats.tx_bytes;

 	for (j = 0; j < NSS_MAX_NUM_PRI; j++) {
 		nss_n2h_stats[id][NSS_STATS_NODE_RX_QUEUE_0_DROPPED + j] += nnss->node_stats.rx_dropped[j];
 	}

 	/*
 	 * General N2H stats
 	 */
 	nss_n2h_stats[id][NSS_N2H_STATS_QUEUE_DROPPED] += nnss->queue_dropped;
 	nss_n2h_stats[id][NSS_N2H_STATS_TOTAL_TICKS] += nnss->total_ticks;
 	nss_n2h_stats[id][NSS_N2H_STATS_WORST_CASE_TICKS] += nnss->worst_case_ticks;
 	nss_n2h_stats[id][NSS_N2H_STATS_ITERATIONS] += nnss->iterations;

 	/*
 	 * pbuf manager ocm and default pool stats
 	 */
 	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_OCM_ALLOC_FAILS_WITH_PAYLOAD] += nnss->pbuf_ocm_stats.pbuf_alloc_fails_with_payload;
 	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_OCM_FREE_COUNT] = nnss->pbuf_ocm_stats.pbuf_free_count;
 	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_OCM_TOTAL_COUNT] = nnss->pbuf_ocm_stats.pbuf_total_count;
 	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_OCM_ALLOC_FAILS_NO_PAYLOAD] += nnss->pbuf_ocm_stats.pbuf_alloc_fails_no_payload;

 	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_DEFAULT_ALLOC_FAILS_WITH_PAYLOAD] += nnss->pbuf_default_stats.pbuf_alloc_fails_with_payload;
 	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_DEFAULT_FREE_COUNT] = nnss->pbuf_default_stats.pbuf_free_count;
 	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_DEFAULT_TOTAL_COUNT] = nnss->pbuf_default_stats.pbuf_total_count;
 	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_DEFAULT_ALLOC_FAILS_NO_PAYLOAD] += nnss->pbuf_default_stats.pbuf_alloc_fails_no_payload;

 	/*
 	 * payload mgr stats
 	 */
 	nss_n2h_stats[id][NSS_N2H_STATS_PAYLOAD_ALLOC_FAILS] += nnss->payload_alloc_fails;
 	nss_n2h_stats[id][NSS_N2H_STATS_PAYLOAD_FREE_COUNT] = nnss->payload_free_count;

 	/*
 	 * Host <=> NSS control traffic stats
 	 */
 	nss_n2h_stats[id][NSS_N2H_STATS_H2N_CONTROL_PACKETS] += nnss->h2n_ctrl_pkts;
 	nss_n2h_stats[id][NSS_N2H_STATS_H2N_CONTROL_BYTES] += nnss->h2n_ctrl_bytes;
 	nss_n2h_stats[id][NSS_N2H_STATS_N2H_CONTROL_PACKETS] += nnss->n2h_ctrl_pkts;
 	nss_n2h_stats[id][NSS_N2H_STATS_N2H_CONTROL_BYTES] += nnss->n2h_ctrl_bytes;

 	/*
 	 * Host <=> NSS control data traffic stats
 	 */
 	nss_n2h_stats[id][NSS_N2H_STATS_H2N_DATA_PACKETS] += nnss->h2n_data_pkts;
 	nss_n2h_stats[id][NSS_N2H_STATS_H2N_DATA_BYTES] += nnss->h2n_data_bytes;
 	nss_n2h_stats[id][NSS_N2H_STATS_N2H_DATA_PACKETS] += nnss->n2h_data_pkts;
 	nss_n2h_stats[id][NSS_N2H_STATS_N2H_DATA_BYTES] += nnss->n2h_data_bytes;

 	/*
 	 * Payloads related stats
 	 */
 	nss_n2h_stats[id][NSS_N2H_STATS_N2H_TOT_PAYLOADS] = nnss->tot_payloads;

 	nss_n2h_stats[id][NSS_N2H_STATS_N2H_INTERFACE_INVALID] += nnss->data_interface_invalid;
 	nss_n2h_stats[id][NSS_N2H_STATS_ENQUEUE_RETRIES] += nnss->enqueue_retries;

 	spin_unlock_bh(&nss_top->stats_lock);
 }

 /*
  * nss_n2h_stats_notify()
  *	Sends notifications to all the registered modules.
  *
  * Leverage NSS-FW statistics timing to update Netlink.
  */
 void nss_n2h_stats_notify(struct nss_ctx_instance *nss_ctx)
 {
 	int i;
 	struct nss_n2h_stats_notification stats;

 	for (i = 0; (i < NSS_STATS_DRV_MAX); i++) {
 		stats.drv_stats[i] = NSS_PKT_STATS_READ(&nss_top_main.stats_drv[i]);
 	}

 	stats.core_id = nss_ctx->id;
 	memcpy(stats.n2h_stats, nss_n2h_stats[stats.core_id], sizeof(stats.n2h_stats));
 	atomic_notifier_call_chain(&nss_n2h_stats_notifier, NSS_STATS_EVENT_NOTIFY, (void *)&stats);
 }

 /*
  * nss_n2h_stats_register_notifier()
  *	Registers statistics notifier.
  */
 int nss_n2h_stats_register_notifier(struct notifier_block *nb)
 {
 	return atomic_notifier_chain_register(&nss_n2h_stats_notifier, nb);
 }
 EXPORT_SYMBOL(nss_n2h_stats_register_notifier);

 /*
  * nss_n2h_stats_unregister_notifier()
  *	Deregisters statistics notifier.
  */
 int nss_n2h_stats_unregister_notifier(struct notifier_block *nb)
 {
 	return atomic_notifier_chain_unregister(&nss_n2h_stats_notifier, nb);
 }
 EXPORT_SYMBOL(nss_n2h_stats_unregister_notifier);
	/*
	**************************************************************************
	* Copyright (c) 2017-2020, 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_n2h_stats.h"
	#include "nss_n2h.h"
	#include "nss_n2h_strings.h"

	/*
	* Declare atomic notifier data structure for statistics.
	*/
	ATOMIC_NOTIFIER_HEAD(nss_n2h_stats_notifier);

	uint64_t nss_n2h_stats[NSS_MAX_CORES][NSS_N2H_STATS_MAX];

	/*
	* nss_n2h_stats_read()
	* Read N2H stats
	*/
	static ssize_t nss_n2h_stats_read(struct file fp, char __user ubuf, size_t sz, loff_t *ppos)
	{
	int32_t i, core;

	/*
	* Max output lines = #stats + few blank lines for banner printing +
	* Number of Extra outputlines for future reference to add new stats
	*/
	uint32_t max_output_lines = (NSS_N2H_STATS_MAX + 3) * NSS_MAX_CORES + 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;
	uint64_t *stats_shadow;

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

	stats_shadow = kzalloc(NSS_N2H_STATS_MAX * 8, GFP_KERNEL);
	if (unlikely(stats_shadow == NULL)) {
	nss_warning("Could not allocate memory for local shadow buffer");
	kfree(lbuf);
	return 0;
	}

	/*
	* N2H node stats
	*/
	for (core = 0; core < nss_top_main.num_nss; core++) {
	spin_lock_bh(&nss_top_main.stats_lock);
	for (i = 0; i < NSS_N2H_STATS_MAX; i++) {
	stats_shadow[i] = nss_n2h_stats[core][i];
	}
	spin_unlock_bh(&nss_top_main.stats_lock);
	size_wr += nss_stats_banner(lbuf, size_wr, size_al, "n2h", core);
	size_wr += nss_stats_print("n2h", NULL, NSS_STATS_SINGLE_INSTANCE
	, nss_n2h_strings_stats
	, stats_shadow
	, NSS_N2H_STATS_MAX
	, lbuf, size_wr, size_al);
	}

	bytes_read = simple_read_from_buffer(ubuf, sz, ppos, lbuf, strlen(lbuf));
	kfree(lbuf);
	kfree(stats_shadow);

	return bytes_read;
	}

	/*
	* nss_n2h_stats_ops
	*/
	NSS_STATS_DECLARE_FILE_OPERATIONS(n2h);

	/*
	* nss_n2h_stats_dentry_create()
	* Create N2H statistics debug entry.
	*/
	void nss_n2h_stats_dentry_create(void)
	{
	nss_stats_create_dentry("n2h", &nss_n2h_stats_ops);
	}

	/*
	* nss_n2h_stats_sync()
	* Handle the syncing of NSS statistics.
	*/
	void nss_n2h_stats_sync(struct nss_ctx_instance nss_ctx, struct nss_n2h_stats_sync nnss)
	{
	struct nss_top_instance *nss_top = nss_ctx->nss_top;
	int id = nss_ctx->id;
	int j;

	spin_lock_bh(&nss_top->stats_lock);

	/*
	* common node stats
	*/
	nss_n2h_stats[id][NSS_STATS_NODE_RX_PKTS] += nnss->node_stats.rx_packets;
	nss_n2h_stats[id][NSS_STATS_NODE_RX_BYTES] += nnss->node_stats.rx_bytes;
	nss_n2h_stats[id][NSS_STATS_NODE_TX_PKTS] += nnss->node_stats.tx_packets;
	nss_n2h_stats[id][NSS_STATS_NODE_TX_BYTES] += nnss->node_stats.tx_bytes;

	for (j = 0; j < NSS_MAX_NUM_PRI; j++) {
	nss_n2h_stats[id][NSS_STATS_NODE_RX_QUEUE_0_DROPPED + j] += nnss->node_stats.rx_dropped[j];
	}

	/*
	* General N2H stats
	*/
	nss_n2h_stats[id][NSS_N2H_STATS_QUEUE_DROPPED] += nnss->queue_dropped;
	nss_n2h_stats[id][NSS_N2H_STATS_TOTAL_TICKS] += nnss->total_ticks;
	nss_n2h_stats[id][NSS_N2H_STATS_WORST_CASE_TICKS] += nnss->worst_case_ticks;
	nss_n2h_stats[id][NSS_N2H_STATS_ITERATIONS] += nnss->iterations;

	/*
	* pbuf manager ocm and default pool stats
	*/
	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_OCM_ALLOC_FAILS_WITH_PAYLOAD] += nnss->pbuf_ocm_stats.pbuf_alloc_fails_with_payload;
	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_OCM_FREE_COUNT] = nnss->pbuf_ocm_stats.pbuf_free_count;
	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_OCM_TOTAL_COUNT] = nnss->pbuf_ocm_stats.pbuf_total_count;
	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_OCM_ALLOC_FAILS_NO_PAYLOAD] += nnss->pbuf_ocm_stats.pbuf_alloc_fails_no_payload;

	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_DEFAULT_ALLOC_FAILS_WITH_PAYLOAD] += nnss->pbuf_default_stats.pbuf_alloc_fails_with_payload;
	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_DEFAULT_FREE_COUNT] = nnss->pbuf_default_stats.pbuf_free_count;
	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_DEFAULT_TOTAL_COUNT] = nnss->pbuf_default_stats.pbuf_total_count;
	nss_n2h_stats[id][NSS_N2H_STATS_PBUF_DEFAULT_ALLOC_FAILS_NO_PAYLOAD] += nnss->pbuf_default_stats.pbuf_alloc_fails_no_payload;

	/*
	* payload mgr stats
	*/
	nss_n2h_stats[id][NSS_N2H_STATS_PAYLOAD_ALLOC_FAILS] += nnss->payload_alloc_fails;
	nss_n2h_stats[id][NSS_N2H_STATS_PAYLOAD_FREE_COUNT] = nnss->payload_free_count;

	/*
	* Host <=> NSS control traffic stats
	*/
	nss_n2h_stats[id][NSS_N2H_STATS_H2N_CONTROL_PACKETS] += nnss->h2n_ctrl_pkts;
	nss_n2h_stats[id][NSS_N2H_STATS_H2N_CONTROL_BYTES] += nnss->h2n_ctrl_bytes;
	nss_n2h_stats[id][NSS_N2H_STATS_N2H_CONTROL_PACKETS] += nnss->n2h_ctrl_pkts;
	nss_n2h_stats[id][NSS_N2H_STATS_N2H_CONTROL_BYTES] += nnss->n2h_ctrl_bytes;

	/*
	* Host <=> NSS control data traffic stats
	*/
	nss_n2h_stats[id][NSS_N2H_STATS_H2N_DATA_PACKETS] += nnss->h2n_data_pkts;
	nss_n2h_stats[id][NSS_N2H_STATS_H2N_DATA_BYTES] += nnss->h2n_data_bytes;
	nss_n2h_stats[id][NSS_N2H_STATS_N2H_DATA_PACKETS] += nnss->n2h_data_pkts;
	nss_n2h_stats[id][NSS_N2H_STATS_N2H_DATA_BYTES] += nnss->n2h_data_bytes;

	/*
	* Payloads related stats
	*/
	nss_n2h_stats[id][NSS_N2H_STATS_N2H_TOT_PAYLOADS] = nnss->tot_payloads;

	nss_n2h_stats[id][NSS_N2H_STATS_N2H_INTERFACE_INVALID] += nnss->data_interface_invalid;
	nss_n2h_stats[id][NSS_N2H_STATS_ENQUEUE_RETRIES] += nnss->enqueue_retries;

	spin_unlock_bh(&nss_top->stats_lock);
	}

	/*
	* nss_n2h_stats_notify()
	* Sends notifications to all the registered modules.
	*
	* Leverage NSS-FW statistics timing to update Netlink.
	*/
	void nss_n2h_stats_notify(struct nss_ctx_instance *nss_ctx)
	{
	int i;
	struct nss_n2h_stats_notification stats;

	for (i = 0; (i < NSS_STATS_DRV_MAX); i++) {
	stats.drv_stats[i] = NSS_PKT_STATS_READ(&nss_top_main.stats_drv[i]);
	}

	stats.core_id = nss_ctx->id;
	memcpy(stats.n2h_stats, nss_n2h_stats[stats.core_id], sizeof(stats.n2h_stats));
	atomic_notifier_call_chain(&nss_n2h_stats_notifier, NSS_STATS_EVENT_NOTIFY, (void *)&stats);
	}

	/*
	* nss_n2h_stats_register_notifier()
	* Registers statistics notifier.
	*/
	int nss_n2h_stats_register_notifier(struct notifier_block *nb)
	{
	return atomic_notifier_chain_register(&nss_n2h_stats_notifier, nb);
	}
	EXPORT_SYMBOL(nss_n2h_stats_register_notifier);

	/*
	* nss_n2h_stats_unregister_notifier()
	* Deregisters statistics notifier.
	*/
	int nss_n2h_stats_unregister_notifier(struct notifier_block *nb)
	{
	return atomic_notifier_chain_unregister(&nss_n2h_stats_notifier, nb);
	}
	EXPORT_SYMBOL(nss_n2h_stats_unregister_notifier);