arm-ker...@ml.breakpoint.cc wrote:
> The crypto driver with flush_kernel_dcache_page()
> [...]
> |104857600 bytes (105 MB) copied, 31.3831 s, 3.3 MB/s

FYI I did tests with blocks of 4096 bytes (instead of dm-dcrypt's 512)
and the results suggest that the hardware can do at least 68 MB/s.
This makes sense since some of these devices come with gigabit ethernet.

Is there hope of achieving such throughputs with Linux and cryptoapi
on these SoCs ?  Or would this require very aggressive optimizations,
e.g. DMA'ing directly from the SATA interface to the CESA SRAM, and
then from the CESA SRAM to the ethernet interface ?

Pascal

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