mirror of https://github.com/torvalds/linux.git
349d03ffd5
Implement a crypto library interface for the s390-native ChaCha20 cipher algorithm. This allows us to stop to select CRYPTO_CHACHA20 and instead select CRYPTO_ARCH_HAVE_LIB_CHACHA. This allows BIG_KEYS=y not to build a whole ChaCha20 crypto infrastructure as a built-in, but build a smaller CRYPTO_LIB_CHACHA instead. Make CRYPTO_CHACHA_S390 config entry to look like similar ones on other architectures. Remove CRYPTO_ALGAPI select as anyway it is selected by CRYPTO_SKCIPHER. Add a new test module and a test script for ChaCha20 cipher and its interfaces. Here are test results on an idle z15 machine: Data | Generic crypto TFM | s390 crypto TFM | s390 lib size | enc dec | enc dec | enc dec -----+--------------------+------------------+---------------- 512b | 1545ns 1295ns | 604ns 446ns | 430ns 407ns 4k | 9536ns 9463ns | 2329ns 2174ns | 2170ns 2154ns 64k | 149.6us 149.3us | 34.4us 34.5us | 33.9us 33.1us 6M | 23.61ms 23.11ms | 4223us 4160us | 3951us 4008us 60M | 143.9ms 143.9ms | 33.5ms 33.2ms | 32.2ms 32.1ms Signed-off-by: Vladis Dronov <vdronov@redhat.com> Reviewed-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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| memory-model | ||
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| perf | ||
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