Add support for the ARMv8 crypto extensions.
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Authored by andrew on Oct 20 2016, 11:13 AM.

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Reviewers

jmg
imp

Group Reviewers

arm64

Commits

rS308921: Add accelerated AES with using the ARMv8 crypto instructions. This is based

Summary

Add accelerated AES with using the ARMv8 crypto instructions. This
is based on the AES-NI code, and modified as needed for use on ARMv8.
When loaded the driver will check the appropriate field in the
id_aa64isar0_el1 register to see if AES is supported, and if so the
probe function will signal the driver should attach.

With this I have seen up to 2000Mb/s from the cryptotest test with a
single thread on a ThunderX Pass 2.0.

Test Plan

Ran on ThunderX with a known key, IV, and plain text & verified the
cipher text. Verified decryption produced the correct plain text.

Diff Detail

Repository

rS FreeBSD src repository - subversion

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Event Timeline

andrew updated this revision to Diff 21531.Oct 20 2016, 11:13 AM

andrew retitled this revision from to Add support for the ARMv8 crypto extensions..

andrew updated this object.

andrew edited the test plan for this revision. (Show Details)

andrew added reviewers: arm64, jmg.

andrew added a subscriber: emaste.

This looks great!

sys/crypto/armv8/armv8_crypto_wrap.c
46 ↗	(On Diff #21531)	This is outside the kernel, so this might introduce build issues for a less than full buildworld environment. Not sure it is a big deal (same issues with AESNI work), but thought I'd mention it.