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0a95151a75
There is no ccomp timer on C3, which means our performance tests will start failing again due to variance caused by cache misses. This MR adds TEST_PERFORMANCE_CCOMP_ macro that will only fail performance test if CCOMP timer is supported on the target
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/* mbedTLS SHA performance test
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include "mbedtls/sha256.h"
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#include "unity.h"
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#include "sdkconfig.h"
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#include "esp_heap_caps.h"
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#include "test_utils.h"
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#include "sodium/utils.h"
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#include "ccomp_timer.h"
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TEST_CASE("mbedtls SHA performance", "[aes]")
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{
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const unsigned CALLS = 256;
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const unsigned CALL_SZ = 16 * 1024;
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mbedtls_sha256_context sha256_ctx;
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float elapsed_usec;
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unsigned char sha256[32];
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// allocate internal memory
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uint8_t *buf = heap_caps_malloc(CALL_SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL);
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TEST_ASSERT_NOT_NULL(buf);
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memset(buf, 0x55, CALL_SZ);
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mbedtls_sha256_init(&sha256_ctx);
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ccomp_timer_start();
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TEST_ASSERT_EQUAL(0, mbedtls_sha256_starts_ret(&sha256_ctx, false));
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for (int c = 0; c < CALLS; c++) {
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TEST_ASSERT_EQUAL(0, mbedtls_sha256_update_ret(&sha256_ctx, buf, CALL_SZ));
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}
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TEST_ASSERT_EQUAL(0, mbedtls_sha256_finish_ret(&sha256_ctx, sha256));
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elapsed_usec = ccomp_timer_stop();
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free(buf);
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mbedtls_sha256_free(&sha256_ctx);
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/* Check the result. Reference value can be calculated using:
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* dd if=/dev/zero bs=$((16*1024)) count=256 | tr '\000' '\125' | sha256sum
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*/
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const char *expected_hash = "c88df2638fb9699abaad05780fa5e0fdb6058f477069040eac8bed3231286275";
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char hash_str[sizeof(sha256) * 2 + 1];
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sodium_bin2hex(hash_str, sizeof(hash_str), sha256, sizeof(sha256));
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TEST_ASSERT_EQUAL_STRING(expected_hash, hash_str);
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// bytes/usec = MB/sec
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float mb_sec = (CALL_SZ * CALLS) / elapsed_usec;
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printf("SHA256 rate %.3fMB/sec\n", mb_sec);
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#ifdef CONFIG_MBEDTLS_HARDWARE_SHA
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// Don't put a hard limit on software SHA performance
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TEST_PERFORMANCE_CCOMP_GREATER_THAN(SHA256_THROUGHPUT_MBSEC, "%.3fMB/sec", mb_sec);
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#endif
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}
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