afe and mxfe status notes

For those of you that care, I think we're in the home stretch for integration of afe and mxfe into Nevada.

I spent the weekend going through the code, and reworking large portions of it to make use of zero-copy DMA wherever it was rational to do so (loan up for receive, direct binding for transmit).

The NICDRV test suite has also identified a number of issues with edge cases that didn't come up often, but which I'm glad to know about and have fixed in the version of the code getting putback.

They're only 100 Mbps nics, but the version of the code going into Nevada will make them run at pretty much the same speed as any other 100 Mbps NIC without IP checksum offload.

And, they are still 100% DDI compliant. :-) Thankfully the DDI has been extended for OpenSolaris since the last time I worried about such things (back in Solaris 8 days).

Anyway, looking forward to putback in b70 or b71. (Depending on whether I can get reviewers in time for b70 putback. If you can help me review, please let me know!)

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