static int
gotoStateUpdateKeysReq(tAuthRsnFsm *fsm, tAniEapolKeyAvailEventData *data)
{
tAniEapolRsnKeyDesc *rxDesc;
fsm->currentState = UPDATE_KEYS_REQ;
rxDesc = data->keyDesc;
aniSsmReplayCtrUpdate(fsm->staCtx->peerReplayCtr, rxDesc->replayCounter);
checkTransition(fsm, data);
return ANI_OK;
}
static
int checkTransition(tSuppRsnFsm *fsm, void *arg)
{
tAniEapolKeyAvailEventData *data;
tAniEapolRsnKeyDesc *rxDesc;
v_BOOL_t retransmit;
int retVal;
if (fsm->authReq)
{
gotoStateAuthentication(fsm);
return ANI_OK;
}
switch (fsm->currentState)
{
case INITIALIZE:
break;
case AUTHENTICATION:
gotoStateGotPmk(fsm);
checkTransition(fsm, arg);
break;
case GOT_PMK:
if (fsm->eapolAvail) {
fsm->eapolAvail = eANI_BOOLEAN_FALSE;
data = (tAniEapolKeyAvailEventData *) arg;
rxDesc = (tAniEapolRsnKeyDesc *) data->keyDesc;
if (rxDesc->info.ackFlag)
{
aniSsmReplayCtrUpdate(fsm->peerReplayCtr,
rxDesc->replayCounter);
// Going from one state to another cannot be a retransmit
retVal = gotoStateStaKeyStart(fsm, data, eANI_BOOLEAN_FALSE);
}
}
break;
case STA_KEY_START:
if (fsm->eapolAvail) {
fsm->eapolAvail = eANI_BOOLEAN_FALSE;
data = (tAniEapolKeyAvailEventData *) arg;
rxDesc = (tAniEapolRsnKeyDesc *) data->keyDesc;
if (rxDesc->info.ackFlag) {
retVal = checkPeerReplayCounter(
fsm,
data,
&retransmit,
rxDesc->info.micFlag,
0); // MIC not set means check for re-Tx M1.
if (retVal != ANI_OK)
return ANI_OK; // Caller should not fail
if (retransmit) {
VOS_TRACE( VOS_MODULE_ID_BAP, VOS_TRACE_LEVEL_ERROR,
"Resending EAPOL-Key Msg2 from "
"supplicant to AP" );
retVal = gotoStateStaKeyStart(fsm, data, eANI_BOOLEAN_TRUE);
}
else {
retVal = checkMic(fsm, data, rxDesc->info.unicastFlag);
if (retVal != ANI_OK)
{
bapSuppDisconnect( fsm->ctx );
return retVal;
}
aniSsmReplayCtrUpdate(fsm->peerReplayCtr,
rxDesc->replayCounter);
gotoStateStaKeySet(fsm, data, eANI_BOOLEAN_FALSE);
}
}
}
break;
case STA_KEY_SET:
if (fsm->eapolAvail)
{
fsm->eapolAvail = eANI_BOOLEAN_FALSE;
data = (tAniEapolKeyAvailEventData *) arg;
rxDesc = (tAniEapolRsnKeyDesc *) data->keyDesc;
retVal = checkPeerReplayCounter(
fsm,
data,
&retransmit,
rxDesc->info.micFlag,
1); // MIC set means check for re-Tx M3.
if (retVal != ANI_OK)
return ANI_OK; // Caller should not fail
if (!retransmit)
{
retVal = checkMic(fsm, data, rxDesc->info.unicastFlag);
if (retVal != ANI_OK)
{
bapSuppDisconnect( fsm->ctx );
return retVal;
}
aniSsmReplayCtrUpdate(fsm->peerReplayCtr,
rxDesc->replayCounter);
}
if (rxDesc->info.unicastFlag)
{
/*
* Handle pairwise key message...in this state
* pairwise key messages can only be for retransmissions.
*/
if (retransmit)
{
VOS_TRACE( VOS_MODULE_ID_BAP, VOS_TRACE_LEVEL_ERROR,
"Resending EAPOL-Key Msg4 from "
"supplicant \n" );
retVal = gotoStateStaKeySet(fsm, data, eANI_BOOLEAN_TRUE);
}
}
else
{
/*
* Handle group key message...with group key messages,
* the replay counter has to change on
* retransmissions.
*/
if (!retransmit)
{
retVal = gotoStateGroupKeySet(fsm, data);
if( !ANI_IS_STATUS_SUCCESS( retVal ) )
{
bapSuppDisconnect( fsm->ctx );
return retVal;
}
}
}
}
else {
if (fsm->integFailed)
{
gotoStateKeyUpdate(fsm, arg);
}
}
break;
case GROUP_KEY_SET:
gotoStateStaKeySet(fsm, NULL, eANI_BOOLEAN_FALSE);
break;
case KEY_UPDATE:
gotoStateRekeyMsg(fsm, arg);
break;
default:
VOS_TRACE( VOS_MODULE_ID_BAP, VOS_TRACE_LEVEL_ERROR, "Illegal state for SuppRsnFsm: %d",
fsm->currentState);
VOS_ASSERT( 0 );
return ANI_E_FAILED;
}
return ANI_OK;
}
