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lib/crypto: tests: Add Curve25519 benchmark

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Add a benchmark to curve25519_kunit.  This brings it in line with the
other crypto KUnit tests and provides an easy way to measure
performance.

Link: https://lore.kernel.org/r/20250906213523.84915-9-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
This commit is contained in:
Eric Biggers
2025-09-06 14:35:19 -07:00
parent afc4e4a5f1
commit 643d79e531
1 changed files with 32 additions and 1 deletions
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33
lib/crypto/tests/curve25519_kunit.c
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@@ -5,6 +5,7 @@
#include <crypto/curve25519.h>
#include <kunit/test.h>
#include <linux/timekeeping.h>
struct curve25519_test_vector {
u8 private[CURVE25519_KEY_SIZE];
@@ -1316,9 +1317,39 @@ static void test_curve25519_basepoint(struct kunit *test)
}
}
static void benchmark_curve25519(struct kunit *test)
{
const u8 *private = curve25519_test_vectors[0].private;
const u8 *public = curve25519_test_vectors[0].public;
const size_t warmup_niter = 5000;
const size_t benchmark_niter = 1024;
u8 out[CURVE25519_KEY_SIZE];
bool ok = true;
u64 t;
if (!IS_ENABLED(CONFIG_CRYPTO_LIB_BENCHMARK))
kunit_skip(test, "not enabled");
/* Warm-up */
for (size_t i = 0; i < warmup_niter; i++)
ok &= curve25519(out, private, public);
/* Benchmark */
preempt_disable();
t = ktime_get_ns();
for (size_t i = 0; i < benchmark_niter; i++)
ok &= curve25519(out, private, public);
t = ktime_get_ns() - t;
preempt_enable();
KUNIT_EXPECT_TRUE(test, ok);
kunit_info(test, "%llu ops/s",
div64_u64((u64)benchmark_niter * NSEC_PER_SEC, t ?: 1));
}
static struct kunit_case curve25519_test_cases[] = {
KUNIT_CASE(test_curve25519),
KUNIT_CASE(test_curve25519_basepoint),
KUNIT_CASE(benchmark_curve25519),
{},
};
@@ -1328,5 +1359,5 @@ static struct kunit_suite curve25519_test_suite = {
};
kunit_test_suite(curve25519_test_suite);
MODULE_DESCRIPTION("KUnit tests for Curve25519");
MODULE_DESCRIPTION("KUnit tests and benchmark for Curve25519");
MODULE_LICENSE("GPL");