Comtrol eCos - Manual (Page 611)

Chapter 46. Generic Ethernet Device Driver
6. It then calls back into the hardware driver routine HRDWR _recv(). HRDWR _recv() must copy the data from the
hardware’s buffers into the scatter-gather buffers provided, and return.
7. The network stack now has the data in-hand, and does with it what it will. This might include recursive calls
to transmit a response packet. When this all is done, these calls return, and the “Network Delivery Thread”
sleeps once more, awaiting the next asynchronous event.
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