static
int checkPeerReplayCounter(tAuthRsnFsm *fsm,
tAniEapolKeyAvailEventData *data)
{
int retVal = ANI_E_NULL_VALUE;
int cmp;
tAniEapolRsnKeyDesc *rxDesc;
rxDesc = data->keyDesc;
if( rxDesc )
{
cmp = aniSsmReplayCtrCmp(fsm->staCtx->peerReplayCtr, rxDesc->replayCounter);
// The STA should have sent a newer replay ctr than its old
// request. The first message is exempted from the check.
if (fsm->staCtx->pastFirstPeerRequest && cmp >= 0)
{
retVal = ANI_E_REPLAY_CHECK_FAILED;
}
fsm->staCtx->pastFirstPeerRequest = eANI_BOOLEAN_TRUE;
}
return retVal;
}
static int
checkLocalReplayCounter(tAuthRsnFsm *fsm,
tAniEapolKeyAvailEventData *data)
{
int retVal = ANI_E_NULL_VALUE;
int cmp;
tAniEapolRsnKeyDesc *rxDesc;
rxDesc = data->keyDesc;
if( rxDesc )
{
cmp = aniSsmReplayCtrCmp(fsm->staCtx->localReplayCtr, rxDesc->replayCounter);
// The STA should have sent back the same replay ctr as in our request
if (cmp != 0)
{
retVal = ANI_E_REPLAY_CHECK_FAILED;
}
else
{
retVal = ANI_OK;
}
}
return retVal;
}
static
int checkPeerReplayCounter(tSuppRsnFsm *fsm,
tAniEapolKeyAvailEventData *data,
v_BOOL_t *retransmit,
v_BOOL_t actualMicFlag,
v_BOOL_t reTxMicFlag)
{
int retVal = ANI_OK;
int cmp;
tAniEapolRsnKeyDesc *rxDesc;
rxDesc = data->keyDesc;
if( NULL == rxDesc )
{
return ANI_E_NULL_VALUE;
}
*retransmit = eANI_BOOLEAN_FALSE;
cmp = aniSsmReplayCtrCmp(fsm->peerReplayCtr, rxDesc->replayCounter);
// The AP should send us a replay counter greater than or equal to
// the last one it sent
/*Unless we are forgiving with this we will have interop issues with some vendros like CSR*/
if (cmp > 0)
{
VOS_TRACE( VOS_MODULE_ID_BAP, VOS_TRACE_LEVEL_ERROR,
"BP got old EAPOL replay counter from AP" );
retVal = ANI_E_REPLAY_CHECK_FAILED;
}
else if (cmp <= 0)
{
if ( actualMicFlag == reTxMicFlag )
{
*retransmit = eANI_BOOLEAN_TRUE;
}
}
return retVal;
}
