/**
* @ingroup IxTimeSyncAccCodelet
*
* @fn ixTimeSyncAccCodeletMbufAllocate ()
*
* @brief Allocate memory for mBuf and its associated data buffer
*
* @return
* @li IX_OSAL_MBUF * - successfully allocated memory for mBuf
* @li NULL - fail
*/
PRIVATE IX_OSAL_MBUF
*ixTimeSyncAccCodeletMbufAllocate ()
{
IX_OSAL_MBUF *mBufPtr;
UINT8 *dataPtr;
/* Allocate cache-aligned memory for mbuf header */
mBufPtr = (IX_OSAL_MBUF *) IX_OSAL_CACHE_DMA_MALLOC (sizeof (IX_OSAL_MBUF));
if (NULL == mBufPtr)
{
ixOsalLog (IX_OSAL_LOG_LVL_ERROR, IX_OSAL_LOG_DEV_STDERR, "ixTimeSyncAccCodeletMbufAllocate: failed to allocate memory for mBuf\n",
0, 0, 0, 0, 0, 0);
return NULL;
}
/* initialize mBuf */
ixOsalMemSet (mBufPtr, 0, sizeof (IX_OSAL_MBUF));
/* Allocate cache-aligned memory for mbuf data */
dataPtr = (UINT8 *) IX_OSAL_CACHE_DMA_MALLOC (IX_TIMESYNCACC_CODELET_UDP_FRAME_LEN);
if (NULL == dataPtr)
{
ixOsalLog (IX_OSAL_LOG_LVL_ERROR, IX_OSAL_LOG_DEV_STDERR, "ixTimeSyncAccCodeletMbufAllocate: failed to allocate memory for mBuf's data buffer\n",
0, 0, 0, 0, 0, 0);
return NULL;
}
/* initialize mBuf's data buffer */
ixOsalMemSet (dataPtr, 0, IX_TIMESYNCACC_CODELET_UDP_FRAME_LEN);
/* Fill in mbuf header fields */
IX_OSAL_MBUF_MDATA (mBufPtr) = dataPtr;
IX_OSAL_MBUF_ALLOCATED_BUFF_DATA (mBufPtr) = (UINT32)dataPtr;
IX_OSAL_MBUF_MLEN (mBufPtr) = IX_TIMESYNCACC_CODELET_UDP_FRAME_LEN;
IX_OSAL_MBUF_ALLOCATED_BUFF_LEN (mBufPtr) = IX_TIMESYNCACC_CODELET_UDP_FRAME_LEN;
IX_OSAL_MBUF_PKT_LEN (mBufPtr) = IX_TIMESYNCACC_CODELET_UDP_FRAME_LEN;
return mBufPtr;
} /* end of ixTimeSyncAccCodeletMbufAllocate function */
/*
*
* Transmit loopback parent cell
*/
PRIVATE IX_STATUS
ixOamParentLbCellTx (IxAtmLogicalPort port, UINT32 vpi, UINT32 vci, UINT32 pti)
{
IxOamITU610Cell *txCell;
IxOamITU610LbPayload *lbPayload;
IX_OSAL_MBUF *txMbuf;
IX_STATUS retval = IX_FAIL;
UINT32 lockKey;
UINT32 oamHdr = 0x0;
/* Get a Tx mbuf */
ixAtmUtilsMbufGet(IX_ATM_OAM_CELL_SIZE_NO_HEC, &txMbuf);
if (txMbuf != NULL)
{
/* set the packet header len */
IX_OSAL_MBUF_PKT_LEN(txMbuf) = IX_OSAL_MBUF_MLEN(txMbuf);
txCell = (IxOamITU610Cell *)(IX_OSAL_MBUF_MDATA(txMbuf));
/* Setup shortcut pointers */
lbPayload = &(txCell->payload.lbPayload);
/* Set the OAM function type to LB */
IX_OAM_TYPE_AND_FUNC_SET(lbPayload, IX_OAM_ITU610_TYPE_FAULT_MAN_LB);
/* Setup the loopback indication */
IX_OAM_LOOPBACK_INDICATION_SET(lbPayload, IX_OAM_ITU610_LB_INDICATION_PARENT);
/* Increment the correlation tag and write this into the cell */
lbCorrelationTag++;
ixOamMemCpy(lbPayload->correlationTag, (UCHAR *)(&lbCorrelationTag), IX_OAM_ITU610_LB_CORRELATION_TAG_LEN);
/* Set Loopback Location Id */
ixOamMemCpy(lbPayload->llid, allOnesLocId, IX_OAM_ITU610_LOCATION_ID_LEN);
/* Store the source Id as the CPID */
ixOamMemCpy(lbPayload->sourceId, oamCpid, IX_OAM_ITU610_LOCATION_ID_LEN);
/* Set the reserved fields to 0x6a */
ixOamMemSet(lbPayload->reserved,
IX_OAM_ITU610_RESERVED_BYTE_VALUE,
IX_OAM_ITU610_LB_RESERVED_BYTES_LEN);
/* Set the transmit VPI */
IX_OAM_VPI_SET(oamHdr, vpi);
/* Set the transmit VCI TX Vci */
IX_OAM_VCI_SET(oamHdr, vci);
/* Set the PTI */
IX_OAM_PTI_SET(oamHdr, pti);
/* Set the header in buffer */
IX_OAM_HEADER_SET(txCell, oamHdr);
/* flush the mbuf frm cache */
ixOamTxFlush( txMbuf );
/* Transmit the cell, not reentrant on a VC basis so protect */
lockKey = ixOsalIrqLock();
retval = ixOamTxAndRetry (oamTxConnId[port],
txMbuf,
0, /* CLP 0 */
1); /* Cells per packet */
ixOsalIrqUnlock (lockKey);
if (retval == IX_SUCCESS)
{
/* Increment the loopback out counter */
parentLbCellTxCount[port]++;
}
else
{
/* Release the MBUF */
ixAtmUtilsMbufFree (txMbuf);
}
}
else
{
IX_OAM_CODELET_IRQ_SAFE_LOG_ERROR("ixOamParentLbCellTx: Failed to get a buffer for transmit");
}
return retval;
}
PRIVATE IX_STATUS
ixEthAccCodeletTxGenRxSinkStart(IxEthAccPortId portId)
{
IX_OSAL_MBUF *mBufPtr;
UINT32 numBufs;
IxEthDBStatus status;
/* port transmits as fast as possible and drops rx traffic */
if (ixEthAccCodeletPortConfigure(portId,
NULL,
ixEthAccCodeletRxSinkRxCB,
ixEthAccCodeletTxGenTxCB,
portId)
!= IX_ETH_ACC_SUCCESS)
{
printf("Loopbacks: Failed to start the Tx-Gen Rx-Sink Operation port %u\n",
(UINT32)portId);
return IX_FAIL;
}
/* Disable MAC learning and filtering at the port that sinks the frame.
With learning enabled at both ports, TxGenRxSink will report buffer underrun and overruns
as this mode generates a heavy load of MAC address migrations in the learning/filtering
database.
*/
status = ixEthDBFeatureEnable (portId, IX_ETH_DB_FILTERING, FALSE);
if (IX_ETH_DB_SUCCESS == status)
{
status = ixEthDBFeatureEnable (portId, IX_ETH_DB_LEARNING, FALSE);
}
if (IX_ETH_DB_SUCCESS == status)
{
printf("\nMAC learning & filtering are disabled at port %d\n", portId);
printf("This is to prohibit the MAC address from being migrated back and forth\n");
printf("between two connected ports in the learning/filtering database.\n\n");
}
else
{
printf("\nFailed to disable MAC learning & filtering at port %d.\n", portId);
printf("TxGenRxSink will report buffer underrun and overruns as this mode generates \n");
printf("a heavy load of MAC address migrations in the learning/filtering database. \n");
printf("With learning enabled at both ports, buffer underrun and overruns are expected.\n");
}
/* Generate our random data for the payload */
IX_ETHACC_CODELET_DATAGEN(compData);
/* Now start the loopback by transmitting the first few frames */
for (numBufs=0; numBufs<IX_ETHACC_CODELET_TXGEN_PCKS; numBufs++)
{
IX_ETHACC_CODELET_REMOVE_MBUF_FROM_Q_HEAD(ixEthAccCodeletFreeBufQ,
mBufPtr);
if (mBufPtr == NULL)
{
printf("Loopbacks: Buffer queue empty. Not enough free buffers to transmit in TxGen-RxSink Loopback!\n");
return (IX_FAIL);
}
IX_OSAL_MBUF_MLEN(mBufPtr) = IX_ETHACC_CODELET_TXGEN_PCK_LEN;
IX_OSAL_MBUF_PKT_LEN(mBufPtr) = IX_ETHACC_CODELET_TXGEN_PCK_LEN;
memcpy(IX_OSAL_MBUF_MDATA(mBufPtr),
&compData[0],
IX_ETHACC_CODELET_TXGEN_PCK_LEN);
IX_OSAL_CACHE_FLUSH(IX_OSAL_MBUF_MDATA(mBufPtr),
IX_OSAL_MBUF_MLEN(mBufPtr));
if(ixEthAccPortTxFrameSubmit(portId,
mBufPtr,
IX_ETH_ACC_TX_DEFAULT_PRIORITY)
!= IX_ETH_ACC_SUCCESS)
{
printf("Loopbacks: Error Submitting frame for transmission on port %u\n",
portId);
return (IX_FAIL);
}
}
printf("Port %d Tx pool has %d buffers\n", portId, numBufs);
/* enable traffic */
if(ixEthAccPortEnable(portId)
!= IX_ETH_ACC_SUCCESS)
{
printf("Loopbacks: Error Enabling port %u\n",
(UINT32)portId);
return (IX_FAIL);
}
return (IX_SUCCESS);
}
