Posted Jan 10, 2013 16:01 UTC (Thu) by cladisch
(✭ supporter ✭
In reply to: I'm puzzled...
Parent article: Attacking full-disk encryption with Inception
Even RDMA capable interfaces require the host to set things up before the remote side can initiate a transfer.
The protocol used for FireWire disks (SBP-2) does use remote DMA (but calls it “physical DMA”).
The FireWire code has to explicitly enable RDMA for each device it trusts. However, handling SBP-2 transfers in software is not implemented (yet), so RDMA is enabled for any device that is a mass storage device, or just claims to be one.
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