void vReleaseNetworkBuffer( uint8_t *pucPayloadBuffer );
Returns to the TCP/IP stack an
that was previously obtained from the TCP/IP stack.
vReleaseNetworkBuffer() would normally only be used by a zero copy driver
to release buffers that were previously allocated to DMA descriptors.
Normally network buffers are allocated and released along with
vReleaseNetworkBuffer() must not be called from an interrupt service routine (ISR).
A pointer to the Ethernet buffer being released
(returned to the TCP/IP stack).
Examples are provided on the
Porting FreeRTOS to a Different Microcontroller
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