[BUG] BufferAllocation_1.c could not get buffer for Zero-Copy Driver to store total ethernet frame

[honorx]

Describe the bug
pxGetNetworkBufferWithDescriptor() failed in 'zero copy driver‘ after recent commit '28dd66ce23c966625fc0e1c58340b8fef5ffa781' with 'BufferAllocation_1.c' after add size check for buffer.

Target

• STM32Hxx

Expected behavior
Zero-Copy Driver request 'ipTOTAL_ETHERNET_FRAME_SIZE (1522)' or 'ETH_MAX_PACKET_SIZE (1528)' size of buffer to DMA to send or recieve. but 'BufferAllocation_1.c' limits maximum buffer to 'ipconfigNETWORK_MTU(1500) + ipSIZE_OF_ETH_HEADER (14)' which is small then request.

The size check of pxGetNetworkBufferWithDescriptor() cause DMA could not get enough buffer to store a maximum size of ethernet frame.
the pxGetNetworkBufferWithDescriptor() always return '0' to cause tcpip stack stock.

Additional context
Code in 'BufferAllocation_1.c' as follow

    NetworkBufferDescriptor_t * pxReturn = NULL;
    BaseType_t xInvalid = pdFALSE;
    UBaseType_t uxCount;

    if( ( xNetworkBufferSemaphore != NULL ) &&
        ( xRequestedSizeBytes <= ( ipconfigNETWORK_MTU + ipSIZE_OF_ETH_HEADER ) ) )
    {
        /* If there is a semaphore available, there is a network buffer
         * available. */
        if( xSemaphoreTake( xNetworkBufferSemaphore, xBlockTimeTicks ) == pdPASS )
        {
            /* Protect the structure as it is accessed from tasks and
             * interrupts. */
            ipconfigBUFFER_ALLOC_LOCK();
            {

Frame size defined in 'FreeRTOS_IP.h'

#define ipSIZE_OF_ETH_CRC_BYTES                    ( 4UL )
#define ipSIZE_OF_ETH_OPTIONAL_802_1Q_TAG_BYTES    ( 4UL )
#define ipTOTAL_ETHERNET_FRAME_SIZE                ( ( ( uint32_t ) ipconfigNETWORK_MTU ) + ( ( uint32_t ) ipSIZE_OF_ETH_HEADER ) + ipSIZE_OF_ETH_CRC_BYTES + ipSIZE_OF_ETH_OPTIONAL_802_1Q_TAG_BYTES )

[honorx]

Already handle in #1263 , close for reference if someone needed.