On Tue, 2010-03-23 at 19:03 +0800, Stanislaw Gruszka wrote:
Ah, ok. So only additional cost with "paged Rx" and swcrypto is a memcpy, which is theoretically rather small cost compared with doing tx/rx cryptography in main cpu.
So, what about turn on swcrypto by default upstream?
hwcrypto offloads cryptography to the device. It saves host CPU cycles so it's a good thing to do. The bug #519154 doesn't affect most people and only for 4965. #556990 doesn't look like swcrypto related, need to do more investigation. So I don't think we should use swcrypto=1 by default in upstream. Users are free to do so in their /etc/modprobe.d though.
Thanks, -yi