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uboot-1.1.4-kirkwood/board/mv_feroceon/mv_hal/eth/nfp/mvNfpFdb.c

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/*******************************************************************************
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********************************************************************************
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********************************************************************************
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modify this File under the following licensing terms.
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are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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*******************************************************************************/
/*******************************************************************************
* mvFastPath.c - Marvell Fast Route Routing and Bridge
*
* DESCRIPTION:
*
* Supported Features:
* - OS independent.
*
*******************************************************************************/
/* includes */
#include "mvOs.h"
#include "mvDebug.h"
#include "eth/nfp/mvNfp.h"
#include "eth/mvEth.h"
struct fdbRuleHashBucket *fdbRuleDb;
MV_U32 fdbRuleDbSize;
MV_U32 fdbMember[ETH_FP_IFINDEX_MAX];
MV_U32 fdbRuleUpdateCount = 0;
MV_U32 fdbRuleSetCount = 0;
MV_U32 fdbRuleDeleteCount = 0;
MV_U32 fdbHashMaxDepth;
MV_STATUS mvFpFdbInit(MV_U32 dbSize)
{
fdbRuleDb = (struct fdbRuleHashBucket *)mvOsMalloc(sizeof(struct fdbRuleHashBucket)*dbSize);
if (fdbRuleDb == NULL) {
mvOsPrintf("NFP (fdb): not enough memory\n");
return MV_NO_RESOURCE;
}
fdbRuleDbSize = dbSize;
memset(fdbRuleDb, 0, sizeof(struct fdbRuleHashBucket)*fdbRuleDbSize);
memset(fdbMember, 0, sizeof(fdbMember));
mvOsPrintf("NFP (fdb) init %d entries, %d bytes\n",
fdbRuleDbSize, sizeof(struct fdbRuleHashBucket)*fdbRuleDbSize);
return MV_OK;
}
/* Clear Fast Route Bridge Rule Database (SNAT + DNAT table) */
MV_STATUS mvFpFdbClear(void)
{
MV_U32 i = fdbRuleDbSize;
MV_FP_FDB_RULE *rule, *tmp;
if (fdbRuleDb != NULL)
return MV_NOT_INITIALIZED;
while (i--) {
rule = fdbRuleDb[i].ruleChain;
while (rule) {
tmp = rule;
rule = rule->next;
mvOsFree(tmp);
}
fdbRuleDb[i].ruleChain = NULL;
}
return MV_OK;
}
void mvFpFdbDestroy(void)
{
if (fdbRuleDb != NULL)
mvOsFree(fdbRuleDb);
}
static INLINE int mvFpFdbRuleCmp(MV_FP_RULE_FDB_INFO *rule1, MV_FP_RULE_FDB_INFO *rule2)
{
return !((rule1->bridge == rule2->bridge) &&
(rule1->ifIndex == rule2->ifIndex) &&
!memcmp(rule1->mac, rule2->mac, 6));
}
static INLINE MV_U32 mvFpFdbRuleHash(MV_FP_FDB_RULE *rule)
{
return mv_jhash_3words(rule->fdbInfo.bridge,
0,
*(MV_U32*)(rule->fdbInfo.mac+2), fp_ip_jhash_iv);
}
MV_STATUS mvFpFdbRuleSet(MV_FP_FDB_RULE *newrule)
{
int depth = 0;
MV_U32 hash;
MV_FP_FDB_RULE* rule;
/* ignore foreign ifindex */
if (newrule->fdbInfo.ifIndex >= ETH_FP_IFINDEX_MAX)
return MV_OUT_OF_RANGE;
hash = mvFpFdbRuleHash(newrule);
hash &= (fdbRuleDbSize - 1);
rule = fdbRuleDb[hash].ruleChain;
while (rule) {
if (!mvFpFdbRuleCmp(&rule->fdbInfo, &newrule->fdbInfo))
{
fdbRuleUpdateCount++;
goto out;
}
depth++;
rule = rule->next;
}
fdbRuleSetCount++;
if(depth > fdbHashMaxDepth)
fdbHashMaxDepth = depth;
rule = mvOsMalloc(sizeof(MV_FP_FDB_RULE));
if (!rule) {
mvOsPrintf("NFP (fdb): can't allocate new rule\n");
return MV_FAIL;
}
/* FIXME: No spinlocks */
rule->next = fdbRuleDb[hash].ruleChain;
fdbRuleDb[hash].ruleChain = rule;
out:
mvOsMemcpy(rule, newrule, sizeof(MV_FP_FDB_RULE));
if (rule->fdbInfo.flags & MV_FP_FDB_IS_LOCAL) {
fdbMember[rule->fdbInfo.ifIndex] = rule->fdbInfo.bridge;
fdbMember[rule->fdbInfo.bridge] = rule->fdbInfo.bridge;
}
MV_NFP_DBG("NFP (fdb): new bridge=%d ifIndex=%d %02X:%02X:%02X:%02X:%02X:%02X flags=%x\n",
rule->fdbInfo.bridge, rule->fdbInfo.ifIndex,
rule->fdbInfo.mac[0], rule->fdbInfo.mac[1], rule->fdbInfo.mac[2],
rule->fdbInfo.mac[3], rule->fdbInfo.mac[4], rule->fdbInfo.mac[5],
rule->fdbInfo.flags);
return MV_OK;
}
MV_STATUS mvFpFdbRuleDel(MV_FP_FDB_RULE *oldrule)
{
MV_U32 hash;
MV_FP_FDB_RULE* rule, *prev;
/* ignore foreign ifindex */
if (oldrule->fdbInfo.ifIndex >= ETH_FP_IFINDEX_MAX)
return MV_OUT_OF_RANGE;
if (oldrule->fdbInfo.flags & MV_FP_FDB_IS_LOCAL) {
fdbMember[oldrule->fdbInfo.ifIndex] = 0;
fdbMember[oldrule->fdbInfo.bridge] = 0;
MV_NFP_DBG("NFP (fdb): del member bridge=%d ifIndex=%d\n",
oldrule->fdbInfo.bridge, oldrule->fdbInfo.ifIndex);
}
hash = mvFpFdbRuleHash(oldrule);
hash &= (fdbRuleDbSize - 1);
rule = fdbRuleDb[hash].ruleChain;
prev = NULL;
while (rule) {
if (!mvFpFdbRuleCmp(&rule->fdbInfo, &oldrule->fdbInfo)) {
if (prev)
prev->next = rule->next;
else
fdbRuleDb[hash].ruleChain = rule->next;
fdbRuleDeleteCount++;
MV_NFP_DBG("NFP (fdb): del bridge=%d ifIndex=%d %02X:%02X:%02X:%02X:%02X:%02X flags=%x count=%d\n",
rule->fdbInfo.bridge, rule->fdbInfo.ifIndex,
rule->fdbInfo.mac[0], rule->fdbInfo.mac[1], rule->fdbInfo.mac[2],
rule->fdbInfo.mac[3], rule->fdbInfo.mac[4], rule->fdbInfo.mac[5],
rule->fdbInfo.flags, rule->mgmtInfo.new_count);
mvOsFree(rule);
return MV_OK;
}
prev = rule;
rule = rule->next;
}
return MV_NOT_FOUND;
}
MV_U32 mvFpFdbRuleAge(MV_FP_FDB_RULE *oldrule)
{
MV_U32 hash, age;
MV_FP_FDB_RULE* rule, *prev;
/* ignore foreign ifindex */
if (oldrule->fdbInfo.ifIndex >= ETH_FP_IFINDEX_MAX)
return 0;
hash = mvFpFdbRuleHash(oldrule);
hash &= (fdbRuleDbSize - 1);
rule = fdbRuleDb[hash].ruleChain;
prev = NULL;
while (rule) {
if (!mvFpFdbRuleCmp(&rule->fdbInfo, &oldrule->fdbInfo)) {
MV_NFP_DBG("NFP (fdb): age bridge=%d ifIndex=%d %02X:%02X:%02X:%02X:%02X:%02X flags=%x age=%d\n",
rule->fdbInfo.bridge, rule->fdbInfo.ifIndex,
rule->fdbInfo.mac[0], rule->fdbInfo.mac[1], rule->fdbInfo.mac[2],
rule->fdbInfo.mac[3], rule->fdbInfo.mac[4], rule->fdbInfo.mac[5],
rule->fdbInfo.flags, rule->mgmtInfo.new_count);
age = rule->mgmtInfo.new_count;
rule->mgmtInfo.new_count = 0;
return age;
}
prev = rule;
rule = rule->next;
}
return 0;
}
static void mvFpFdbRulePrint(MV_FP_FDB_RULE *rule, MV_U32 hash)
{
mvOsPrintf("NFP (fdb): 0x%x bridge=%d ifIndex=%d %02X:%02X:%02X:%02X:%02X:%02X flags=%x count=%d\n",
mvFpFdbRuleHash((MV_FP_FDB_RULE*)rule),
rule->fdbInfo.bridge, rule->fdbInfo.ifIndex,
rule->fdbInfo.mac[0], rule->fdbInfo.mac[1], rule->fdbInfo.mac[2],
rule->fdbInfo.mac[3], rule->fdbInfo.mac[4], rule->fdbInfo.mac[5],
rule->fdbInfo.flags, rule->mgmtInfo.new_count);
}
MV_STATUS mvFpFdbPrint(void)
{
MV_U32 i = fdbRuleDbSize;
MV_FP_FDB_RULE *rule;
for (i=0; i<ETH_FP_IFINDEX_MAX; i++) {
if (fdbMember[i])
mvOsPrintf("NFP (fdb): bridge=%d ifIndex=%d\n",fdbMember[i],i);
}
for (i=0; i<fdbRuleDbSize; i++) {
rule = fdbRuleDb[i].ruleChain;
while (rule) {
mvFpFdbRulePrint(rule, i);
rule = rule->next;
}
}
return MV_OK;
}