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crypto: powerpc - Stress test for vpmsum implementations

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vpmsum implementations often don't kick in for short test vectors.
This is a simple test module that does a configurable number of
random tests, each up to 64kB and each with random offsets.

Both CRC-T10DIF and CRC32C are tested.

Cc: Anton Blanchard <[email protected]>
Signed-off-by: Daniel Axtens <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Daniel Axtens 2017-03-15 23:37:37 +11:00 • committed by Herbert Xu
commit 146c8688d9
3 changed files with 146 additions and 0 deletions
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8
crypto/Kconfig
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@ -522,6 +522,14 @@ config CRYPTO_CRCT10DIF_VPMSUM
multiply-sum (vpmsum) instructions, introduced in POWER8. Enable on
POWER8 and newer processors for improved performance.
config CRYPTO_VPMSUM_TESTER
tristate "Powerpc64 vpmsum hardware acceleration tester"
depends on CRYPTO_CRCT10DIF_VPMSUM && CRYPTO_CRC32C_VPMSUM
help
Stress test for CRC32c and CRC-T10DIF algorithms implemented with
POWER8 vpmsum instructions.
Unless you are testing these algorithms, you don't need this.
config CRYPTO_GHASH
tristate "GHASH digest algorithm"
select CRYPTO_GF128MUL