/*
 ***************************************************************************
 * 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 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_stats.h"
#include "nss_core.h"
#include "nss_strings.h"
#include "nss_gre_redir_strings.h"

/*
 * nss_gre_redir_strings_stats
 *	GRE redirect statistics string.
 */
struct nss_stats_info nss_gre_redir_strings_stats[NSS_GRE_REDIR_STATS_MAX] = {
	{"RX Packets",				NSS_STATS_TYPE_COMMON},
	{"RX Bytes",				NSS_STATS_TYPE_COMMON},
	{"TX Packets",				NSS_STATS_TYPE_COMMON},
	{"TX Bytes",				NSS_STATS_TYPE_COMMON},
	{"RX Drops_[0]",			NSS_STATS_TYPE_DROP},
	{"RX Drops_[1]",			NSS_STATS_TYPE_DROP},
	{"RX Drops_[2]",			NSS_STATS_TYPE_DROP},
	{"RX Drops_[3]",			NSS_STATS_TYPE_DROP},
	{"TX Drops",				NSS_STATS_TYPE_DROP},
	{"RX Sjack Packets",			NSS_STATS_TYPE_SPECIAL},
	{"TX Sjack packets",			NSS_STATS_TYPE_SPECIAL},
	{"RX Offload Packets_[0]",		NSS_STATS_TYPE_SPECIAL},
	{"RX Offload Packets_[1]",		NSS_STATS_TYPE_SPECIAL},
	{"RX Offload Packets_[2]",		NSS_STATS_TYPE_SPECIAL},
	{"RX Offload Packets_[3]",		NSS_STATS_TYPE_SPECIAL},
	{"RX Offload Packets_[4]",		NSS_STATS_TYPE_SPECIAL},
	{"TX Offload Packets_[0]",		NSS_STATS_TYPE_SPECIAL},
	{"TX Offload Packets_[1]",		NSS_STATS_TYPE_SPECIAL},
	{"TX Offload Packets_[2]",		NSS_STATS_TYPE_SPECIAL},
	{"TX Offload Packets_[3]",		NSS_STATS_TYPE_SPECIAL},
	{"TX Offload Packets_[4]",		NSS_STATS_TYPE_SPECIAL},
	{"US exception RX Packets",		NSS_STATS_TYPE_EXCEPTION},
	{"US exception TX Packets",		NSS_STATS_TYPE_EXCEPTION},
	{"DS exception RX Packets",		NSS_STATS_TYPE_EXCEPTION},
	{"DS exception TX Packets",		NSS_STATS_TYPE_EXCEPTION},
	{"Encap SG alloc drop",			NSS_STATS_TYPE_DROP},
	{"Decap fail drop",			NSS_STATS_TYPE_DROP},
	{"Decap split drop",			NSS_STATS_TYPE_SPECIAL},
	{"Split SG alloc fail",			NSS_STATS_TYPE_SPECIAL},
	{"Split linear copy fail",		NSS_STATS_TYPE_SPECIAL},
	{"Split not enough tailroom",		NSS_STATS_TYPE_EXCEPTION},
	{"Exception ds invalid dst",		NSS_STATS_TYPE_SPECIAL},
	{"Decap eapol frames",			NSS_STATS_TYPE_SPECIAL},
	{"Exception ds invalid appid",		NSS_STATS_TYPE_EXCEPTION},
	{"Headroom Unavailable",		NSS_STATS_TYPE_EXCEPTION},
	{"Exception ds Tx completion Success",	NSS_STATS_TYPE_SPECIAL},
	{"Exception ds Tx completion drop",	NSS_STATS_TYPE_DROP}
};

/*
 * nss_gre_redir_strings_read()
 *	Read GRE redirect statistics names.
 */
static ssize_t nss_gre_redir_strings_read(struct file *fp, char __user *ubuf, size_t sz, loff_t *ppos)
{
	return nss_strings_print(ubuf, sz, ppos, nss_gre_redir_strings_stats, NSS_GRE_REDIR_STATS_MAX);
}

/*
 * nss_gre_redir_strings_ops
 */
NSS_STRINGS_DECLARE_FILE_OPERATIONS(gre_redir);

/*
 * nss_gre_redir_strings_dentry_create()
 *	Create GRE redirect statistics strings debug entry.
 */
void nss_gre_redir_strings_dentry_create(void)
{
	nss_strings_create_dentry("gre_redir", &nss_gre_redir_strings_ops);
}