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/*******************************************************************************
* mvNfpFdb.c - Marvell Fast Network Processing
*
* DESCRIPTION:
*
*       Supported Features:
*       - OS independent.
*
*******************************************************************************/

#include "mvOs.h"
#include "mvDebug.h"
#include "mvList.h"
#include "gbe/mvNeta.h"
#include "mvNfpDefs.h"
#include "mvNfp.h"

NFP_RULE_FDB **nfp_fdb_hash = NULL;

MV_STATUS _INIT mvNfpFdbInit(void)
{
	MV_U32 bytes = sizeof(NFP_RULE_FDB *) * NFP_BRIDGE_HASH_SIZE;

	nfp_fdb_hash = (NFP_RULE_FDB **)mvOsMalloc(bytes);
	if (nfp_fdb_hash == NULL) {
		mvOsPrintf("NFP (FDB hash): not enough memory\n");
		return MV_NO_RESOURCE;
	}
	mvOsMemset(nfp_fdb_hash, 0, bytes);

	mvOsPrintf("NFP (FDB) init %d entries, %d bytes\n", NFP_BRIDGE_HASH_SIZE, bytes);

	return MV_OK;
}

/* Clear FDB Rule Database */
MV_STATUS mvNfpFdbClear(void)
{
	int	i;
	NFP_RULE_FDB	*rule, *tmp;

	if (nfp_fdb_hash == NULL)
		return MV_NOT_INITIALIZED;

	for (i = 0; i < NFP_BRIDGE_HASH_SIZE; i++) {

		rule = nfp_fdb_hash[i];
		while (rule) {
			tmp = rule;
			rule = rule->next;
			mvOsFree(tmp);
		}
		nfp_fdb_hash[i] = NULL;
	}
	return MV_OK;
}

void mvNfpFdbDestroy(void)
{
	if (nfp_fdb_hash != NULL)
		mvOsFree(nfp_fdb_hash);
}

MV_STATUS mvNfpFdbRuleAdd(NFP_RULE_FDB *rule2)
{
	MV_U32 hash;
	NFP_RULE_FDB	*rule;
	NFP_RULE_FIB	*fib;
	NFP_IF_MAP      *outIfMap;
	MV_LIST_ELEMENT	*curr, *tmp;

	hash = mvNfpFdbRuleHash(rule2->bridgeIf, rule2->mac);

	rule = nfp_fdb_hash[hash];
	while (rule) {
		if (mvNfpFdbRuleCmp(rule2->bridgeIf, rule2->mac, rule)) {
			MV_U32 age = rule->age;

			/* Update rule, but save age */
			mvOsMemcpy(rule, rule2, sizeof(NFP_RULE_FDB));
			rule->age = age;
			goto out;
		}
		rule = rule->next;
	}

	rule = (NFP_RULE_FDB *)mvOsMalloc(sizeof(NFP_RULE_FDB));
	if (rule == NULL) {
		mvOsPrintf("%s: NFP (FDB rule) - OOM\n", __func__);
		return MV_FAIL;
	}

	mvOsMemcpy(rule, rule2, sizeof(NFP_RULE_FDB));

	rule->next = nfp_fdb_hash[hash];
	nfp_fdb_hash[hash] = rule;

	outIfMap = mvNfpIfMapGet(rule->if_index);

	/* Update incomplete FIB entires */
	curr = fib_inv_list->next;
	while (curr) {
		fib = (NFP_RULE_FIB *)curr->data;
		tmp = curr->next;
		if ((rule->bridgeIf == fib->oif) &&
			(!memcmp(rule->mac, fib->da, MV_MAC_ADDR_SIZE))) {

			/* Found incomplete FIB entry */
			fib->oif = outIfMap->ifIdx;
			fib->mh = outIfMap->txMh;
			fib->flags &= ~NFP_F_FIB_BRIDGE_INV;

			mvNfpFibRuleValid(fib, curr);
		}
		curr = tmp;
	}
out:
	NFP_DBG("NFP (FDB) add %p\n", rule);

	return MV_OK;
}

MV_STATUS mvNfpFdbRuleDel(NFP_RULE_FDB *rule2)
{
	MV_U32 hash;
	NFP_RULE_FDB	*rule, *prev;
	NFP_RULE_FIB	*fib, *fib_prev;
	int i;

	hash = mvNfpFdbRuleHash(rule2->bridgeIf, rule2->mac);

	rule = nfp_fdb_hash[hash];
	prev = NULL;

	while (rule) {
		if (mvNfpFdbRuleCmp(rule2->bridgeIf, rule2->mac, rule)) {
			/* Found: delete rule */
			if (prev)
				prev->next = rule->next;
			else
				nfp_fdb_hash[hash] = rule->next;

			NFP_DBG("NFP (FDB) del %p\n", rule);
			rule2->if_index = rule->if_index;
			mvOsFree(rule);
			break;
		}
		prev = rule;
		rule = rule->next;
	}
	if (rule == NULL)
		return MV_NOT_FOUND;

	/* Invalidate relevant FIB rules */
	for (i = 0; i < NFP_FIB_HASH_SIZE; i++) {
		fib = fib_hash[i];
		fib_prev = NULL;
		while (fib) {
			if ((rule2->if_index == fib->oif) &&
				(!memcmp(rule2->mac, fib->da, MV_MAC_ADDR_SIZE))) {
				/* Invalidate FIB route. FIXME - update HWF rule */
				fib->flags |= NFP_F_FIB_BRIDGE_INV;
				fib->oif = rule2->bridgeIf;

				/* Remove FIB rule from hash table */
				if (fib_prev)
					fib_prev->next = fib->next;
				else
					fib_hash[i] = fib->next;

				/* Add FIB rule to incomplete list */
				mvListAddHead(fib_inv_list, (MV_ULONG)fib);
#ifdef NFP_CT
				/* Invalidate relevant CT rules */
				mvNfpCtRuleFibInvalidate(fib);
#endif /* NFP_CT */
			}
			fib_prev = fib;
			fib = fib->next;
		}
	}

	return MV_OK;
}

MV_STATUS mvNfpFdbRuleAge(NFP_RULE_FDB *rule2)
{
	NFP_RULE_FDB *rule;

	rule = mvNfpFdbLookup(rule2->bridgeIf, rule2->mac);
	if (rule) {
		rule2->age = rule->age;
		rule->age = 0;
		return MV_OK;
	}
	rule2->age = 0;
	return MV_NOT_FOUND;
}

static void mvNfpFdbRulePrint(NFP_RULE_FDB *rule)
{
	if (rule->status == NFP_BRIDGE_INV)
		mvOsPrintf("INVALID  : ");
	else if (rule->status == NFP_BRIDGE_LOCAL)
		mvOsPrintf("LOCAL    : ");
	else
		mvOsPrintf("NON_LOCAL: ");

	mvOsPrintf(" bridgeIf=%d, if_index=%u, MAC=" MV_MACQUAD_FMT " age=%u\n",
		rule->bridgeIf, rule->if_index, MV_MACQUAD(rule->mac), rule->age);
}

void mvNfpFdbDump(void)
{
	int             i;
	NFP_RULE_FDB *rule;

	mvOsPrintf("\n(fdb)\n");
	for (i = 0; i < NFP_BRIDGE_HASH_SIZE; i++) {
		rule = nfp_fdb_hash[i];

		while (rule) {
			mvOsPrintf(" [%5d] ", i);
			mvNfpFdbRulePrint(rule);
			rule = rule->next;
		}
	}
}

void mvNfpFdbFlushBridge(int ifindex)
{
	int i;

	NFP_RULE_FDB *rule;

	for (i = 0; i < NFP_BRIDGE_HASH_SIZE; i++) {
		rule = nfp_fdb_hash[i];

		while (rule) {
			if ((rule->if_index == ifindex) || (ifindex == -1))
				mvNfpFdbRuleDel(rule);
			rule = rule->next;
		}
	}
}