RTL8139: Difference between revisions
→Configuring receive buffer (RCR)
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* '''AAP - Accept All Packets'''. Accept all packets (run in promiscuous mode).
If WRAP is 1, the remainder of the packet will be written contiguously (overflowing the actual receive buffer) so that it can be handled more efficiently. This means the buffer must be an additional 1500 bytes (to hold the largest potentially overflowing packet).
You can also tell the size of your RX buffer here, however if you use a 8k + 16 buffer as described before, writing zeroes is enough. To use the WRAP=1 bit, an 8K buffer must in fact be 8k+16+1500 bytes.
Example:
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