/**
* \fn runScheduler
* \brief The scheduler processing (static function)
*
* Loops over the mgmt-queues (high priority first) and if queue enabled and
* has packets, dequeue a packet and send it to the TxCtrl.
* Exit if the port level is disabled or if couldn't send anything from both queues.
*
* \note Protect the queues access against preemption from external context (EAPOL).
* \param pTxMgmtQ - The module's object
* \return void
* \sa
*/
static void runScheduler (TTxMgmtQ *pTxMgmtQ)
{
TI_STATUS eStatus;
TTxCtrlBlk *pPktCtrlBlk;
TI_UINT32 uQueId = 0; /* start from highest priority queue */
while(1)
{
/* If the Mgmt port is closed exit. */
if ( !pTxMgmtQ->bMgmtPortEnable )
{
return;
}
/* Check that the current queue is not busy and is enabled by the state-machine. */
if ( !pTxMgmtQ->aQueueBusy[uQueId] && pTxMgmtQ->aQueueEnabledBySM[uQueId])
{
/* Dequeue a packet in a critical section */
context_EnterCriticalSection (pTxMgmtQ->hContext);
pPktCtrlBlk = (TTxCtrlBlk *) que_Dequeue (pTxMgmtQ->aQueues[uQueId]);
context_LeaveCriticalSection (pTxMgmtQ->hContext);
if (pPktCtrlBlk)
{
pTxMgmtQ->tDbgCounters.aDequeuePackets[uQueId]++;
/* Send the packet */
eStatus = txCtrl_XmitMgmt (pTxMgmtQ->hTxCtrl, pPktCtrlBlk);
/* In case the return status is busy it means that the packet wasn't handled
so we need to requeue the packet for future try. */
if(eStatus == STATUS_XMIT_BUSY)
{
/* Requeue the packet in a critical section */
context_EnterCriticalSection (pTxMgmtQ->hContext);
que_Requeue (pTxMgmtQ->aQueues[uQueId], (TI_HANDLE)pPktCtrlBlk);
context_LeaveCriticalSection (pTxMgmtQ->hContext);
pTxMgmtQ->tDbgCounters.aRequeuePackets[uQueId]++;
}
/* The packet was handled by the lower Tx layers. */
else
{
pTxMgmtQ->tDbgCounters.aXmittedPackets[uQueId]++;
/* Successful delivery so start next tx from the high priority queue (mgmt),
* giving it strict priority over the lower queue.
*/
uQueId = 0;
continue;
}
}
}
/* If we got here we couldn't deliver a packet from current queue, so progress to lower
* priority queue and if already in lowest queue exit.
*/
uQueId++;
if (uQueId < NUM_OF_MGMT_QUEUES)
{
continue; /* Try sending from next queue (i.e. the EAPOL queue). */
}
else
{
/* We couldn't send from both queues so indicate end of packets burst and exit. */
TWD_txXfer_EndOfBurst (pTxMgmtQ->hTWD);
return;
}
} /* End of while */
/* Unreachable code */
}
/**
* \fn runScheduler
* \brief The scheduler processing (static function)
*
* Loops over the mgmt-queues (high priority first) and if queue enabled and
* has packets, dequeue a packet and send it to the TxCtrl.
* Exit if the port level is disabled or if couldn't send anything from both queues.
*
* \note Protect the queues access against preemption from external context (EAPOL).
* \param pTxMgmtQ - The module's object
* \return void
* \sa
*/
static void runScheduler (TTxMgmtQ *pTxMgmtQ)
{
TI_STATUS eStatus;
TTxCtrlBlk *pPktCtrlBlk;
TI_UINT32 uQueId = 0; /* start from highest priority queue */
TMgmtLinkQ *pLinkQ;
TI_UINT32 uHlid = 0;
TI_BOOL bQueueActive;
TI_BOOL bLinkActive;
while(1)
{
/* If the Mgmt port is closed or AC for mgmt is busy, exit. */
if ( (!pTxMgmtQ->bMgmtPortEnable) || (pTxMgmtQ->aMgmtAcBusy) )
{
return;
}
pLinkQ = &pTxMgmtQ->aMgmtLinkQ[uHlid]; /* Link queues */
bLinkActive = ( (!pLinkQ->bBusy) && pLinkQ->bEnabled );
bQueueActive = pLinkQ->aQenabled[uQueId];
/* Check that the current link and current queue are not busy and are enabled */
if ( bLinkActive && bQueueActive)
{
/* Dequeue a packet in a critical section */
context_EnterCriticalSection (pTxMgmtQ->hContext);
pPktCtrlBlk = (TTxCtrlBlk *) que_Dequeue (pLinkQ->aQueues[uQueId]);
context_LeaveCriticalSection (pTxMgmtQ->hContext);
if (pPktCtrlBlk)
{
pLinkQ->tDbgCounters.aDequeuePackets[uQueId]++;
/* Send the packet */
eStatus = txCtrl_XmitMgmt (pTxMgmtQ->hTxCtrl, pPktCtrlBlk);
/* In case the return status is busy it means that the packet wasn't handled
so we need to requeue the packet for future try. */
if(eStatus == STATUS_XMIT_BUSY)
{
/* Requeue the packet in a critical section */
context_EnterCriticalSection (pTxMgmtQ->hContext);
que_Requeue (pLinkQ->aQueues[uQueId], (TI_HANDLE)pPktCtrlBlk);
context_LeaveCriticalSection (pTxMgmtQ->hContext);
pLinkQ->tDbgCounters.aRequeuePackets[uQueId]++;
}
/* The packet was handled by the lower Tx layers. */
else
{
pLinkQ->tDbgCounters.aXmittedPackets[uQueId]++;
/* Successful delivery so start next tx from the high priority queue (mgmt),
* giving it strict priority over the lower queue.
*/
uQueId = 0;
continue;
}
}
}
/* If we got here we couldn't deliver a packet from current queue, so progress to lower
* priority queue and if already in lowest queue exit.
*/
if (bLinkActive) /* Continue to next queue only if the link is active */
{
uQueId++;
if (uQueId < NUM_OF_MGMT_QUEUES)
{
continue; /* Try sending from next queue (i.e. the EAPOL queue). */
}
}
/*
* continue to next link
*/
uHlid++;
if (uHlid < WLANLINKS_MAX_LINKS)
{
uQueId = 0;
continue;
}
else
{
/* We couldn't send from both queues so indicate end of packets burst and exit. */
TWD_txXfer_EndOfBurst (pTxMgmtQ->hTWD);
return;
}
} /* End of while */
/* Unreachable code */
}