/*
 **************************************************************************
 * Copyright (c) 2018, 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.
 **************************************************************************
 */

/*
 * nss_tunipip6_log.c
 *	NSS TUNIPIP6 logger file.
 */

#include "nss_core.h"

/*
 * nss_tunipip6_log_message_types_str
 *	NSS TUNIPIP6 message strings
 */
static int8_t *nss_tunipip6_log_message_types_str[NSS_TUNIPIP6_MAX] __maybe_unused = {
	"TUNIPIP6 Encap Interface Create",
	"TUNIPIP6 Decap Interface Create",
	"TUNIPIP6 Stats",
	"TUNIPIP6 FMR add",
	"TUNIPIP6 FMR delete",
	"TUNIPIP6 FMR flush",
	"TUNIPIP6 BMR add",
	"TUNIPIP6 BMR delete",
};

/*
 * nss_tunipip6_log_error_types_str
 *	Strings for error types for TUNIPIP6 messages
 */
static char *nss_tunipip6_log_error_types_str[NSS_TUNIPIP6_ERROR_MAX] __maybe_unused = {
	"TUNIPIP6 maximum tunnel reached",
	"TUNIPIP6 tunnel already exists",
	"TUNIPIP6 configuration parameters are incorrect",
	"TUNIPIP6 FMR already exists ",
	"TUNIPIP6 no FMR configured",
	"TUNIPIP6 FMR table is full",
	"TUNIPIP6 invalid FMR",
	"TUNIPIP6 BMR already exists",
	"TUNIPIP6 no BMR configured",
	"TUNIPIP6 memory allocation for FMR failed",
	"TUNIPIP6 unknown error",
};

/*
 * nss_tunipip6_log_map_rule()
 *	Log NSS TUNIPIP6 map rule.
 */
static void nss_tunipip6_log_map_rule(struct nss_tunipip6_msg *ntm)
{
	struct nss_tunipip6_map_rule *nmr __maybe_unused = &ntm->msg.map_rule;
	nss_trace("%px: NSS TUNIPIP6 Interface Create message \n"
		"TUNIPIP6 Map Rule IPv6 prefix: %pI6\n"
		"TUNIPIP6 Map Rule IPv6 prefix length: %d\n"
		"TUNIPIP6 Map Rule IPv4 prefix: %pI4\n"
		"TUNIPIP6 Map Rule IPv4 prefix length: %d\n"
		"TUNIPIP6 Map Rule IPv6 suffix: %pI6\n"
		"TUNIPIP6 Map Rule IPv6 suffix length: %d\n"
		"TUNIPIP6 Map Rule EA length: %d\n"
		"TUNIPIP6 Map Rule PSID offset: %d\n",
		nmr, nmr->ip6_prefix,
		nmr->ip6_prefix_len,&nmr->ip4_prefix,
		nmr->ip4_prefix_len, nmr->ip6_suffix,
		nmr->ip6_suffix_len, nmr->ea_len,
		nmr->psid_offset);
}

/*
 * nss_tunipip6_log_if_create_msg()
 *	Log NSS TUNIPIP6 Interface Create
 */
static void nss_tunipip6_log_if_create_msg(struct nss_tunipip6_msg *ntm)
{
	struct nss_tunipip6_create_msg *ntcm __maybe_unused = &ntm->msg.tunipip6_create;
	nss_trace("%px: NSS TUNIPIP6 Interface Create message \n"
		"TUNIPIP6 Source Address: %pI6\n"
		"TUNIPIP6 Destination Address: %pI6\n"
		"TUNIPIP6 Flow Label: %d\n"
		"TUNIPIP6 Flags: %d\n"
		"TUNIPIP6 Hop Limit: %d\n"
		"TUNIPIP6 Draft03 Specification: %d\n"
		"TUNIPIP6 TTL inherit: %u\n"
		"TUNIPIP6 TOS inherit: %u\n"
		"TUNIPIP6 Frag ID Update: %u\n"
		"TUNIPIP6 Max FMR: %u\n",
		ntcm, ntcm->saddr,
		ntcm->daddr, ntcm->flowlabel,
		ntcm->flags, ntcm->hop_limit,
		ntcm->draft03,
		ntcm->ttl_inherit,
		ntcm->tos_inherit,
		ntcm->frag_id_update,
		ntcm->fmr_max);
}

/*
 * nss_tunipip6_log_verbose()
 *	Log message contents.
 */
static void nss_tunipip6_log_verbose(struct nss_tunipip6_msg *ntm)
{
	switch (ntm->cm.type) {
	case NSS_TUNIPIP6_TX_ENCAP_IF_CREATE:
	case NSS_TUNIPIP6_TX_DECAP_IF_CREATE:
		nss_tunipip6_log_if_create_msg(ntm);
		break;

	case NSS_TUNIPIP6_STATS_SYNC:
		/*
		 * No log for valid stats message.
		 */
		break;

	case NSS_TUNIPIP6_BMR_RULE_ADD:
	case NSS_TUNIPIP6_BMR_RULE_DEL:
	case NSS_TUNIPIP6_FMR_RULE_ADD:
	case NSS_TUNIPIP6_FMR_RULE_DEL:
		nss_tunipip6_log_map_rule(ntm);
		break;
	case NSS_TUNIPIP6_FMR_RULE_FLUSH:
		nss_trace("%px: FMR rule flush.\n", ntm);
		break;
	default:
		nss_trace("%px: Invalid message type\n", ntm);
		break;
	}
}

/*
 * nss_tunipip6_log_tx_msg()
 *	Log messages transmitted to FW.
 */
void nss_tunipip6_log_tx_msg(struct nss_tunipip6_msg *ntm)
{
	if (ntm->cm.type >= NSS_TUNIPIP6_MAX) {
		nss_warning("%px: Invalid message type\n", ntm);
		return;
	}

	nss_info("%px: type[%d]:%s\n", ntm, ntm->cm.type, nss_tunipip6_log_message_types_str[ntm->cm.type]);
	nss_tunipip6_log_verbose(ntm);
}

/*
 * nss_tunipip6_log_rx_msg()
 *	Log messages received from FW.
 */
void nss_tunipip6_log_rx_msg(struct nss_tunipip6_msg *ntm)
{
	if (ntm->cm.response >= NSS_CMN_RESPONSE_LAST) {
		nss_warning("%px: Invalid response\n", ntm);
		return;
	}

	if (ntm->cm.response == NSS_CMN_RESPONSE_NOTIFY || (ntm->cm.response == NSS_CMN_RESPONSE_ACK)) {
		nss_info("%px: type[%d]:%s, response[%d]:%s\n", ntm, ntm->cm.type,
			nss_tunipip6_log_message_types_str[ntm->cm.type],
			ntm->cm.response, nss_cmn_response_str[ntm->cm.response]);
		goto verbose;
	}

	if (ntm->cm.error >= NSS_TUNIPIP6_ERROR_MAX) {
		nss_warning("%px: msg failure - type[%d]:%s, response[%d]:%s, error[%d]:Invalid error\n",
			ntm, ntm->cm.type, nss_tunipip6_log_message_types_str[ntm->cm.type],
			ntm->cm.response, nss_cmn_response_str[ntm->cm.response],
			ntm->cm.error);
		goto verbose;
	}

	nss_info("%px: msg nack - type[%d]:%s, response[%d]:%s, error[%d]:%s\n",
		ntm, ntm->cm.type, nss_tunipip6_log_message_types_str[ntm->cm.type],
		ntm->cm.response, nss_cmn_response_str[ntm->cm.response],
		ntm->cm.error, nss_tunipip6_log_error_types_str[ntm->cm.error]);

verbose:
	nss_tunipip6_log_verbose(ntm);
}