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		b4296d7f88
		
	
	
	
	
		
			
			Currently the crypto benchmarks are processing data in varying chunk sizes, over a fixed time period. This turns out to be a terrible idea because with small chunk sizes the overhead of checking the elapsed time on each loop iteration masks the true performance. Benchmarking over a fixed data size avoids the loop running any system calls which can interfere with the performance measurements. Before this change Enc chunk 512 bytes 2283.47 MB/sec Dec chunk 512 bytes 2236.23 MB/sec OK Enc chunk 4096 bytes 2744.97 MB/sec Dec chunk 4096 bytes 2614.71 MB/sec OK Enc chunk 16384 bytes 2777.53 MB/sec Dec chunk 16384 bytes 2678.44 MB/sec OK Enc chunk 65536 bytes 2809.34 MB/sec Dec chunk 65536 bytes 2699.47 MB/sec OK After this change Enc chunk 512 bytes 2058.22 MB/sec Dec chunk 512 bytes 2030.11 MB/sec OK Enc chunk 4096 bytes 2699.27 MB/sec Dec chunk 4096 bytes 2573.78 MB/sec OK Enc chunk 16384 bytes 2748.52 MB/sec Dec chunk 16384 bytes 2653.76 MB/sec OK Enc chunk 65536 bytes 2814.08 MB/sec Dec chunk 65536 bytes 2712.74 MB/sec OK The actual crypto performance hasn't changed, which shows how significant the mis-measurement has been for small data sizes. Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
		
			
				
	
	
		
			205 lines
		
	
	
		
			6.0 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			205 lines
		
	
	
		
			6.0 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * QEMU Crypto cipher speed benchmark
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|  *
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|  * Copyright (c) 2017 HUAWEI TECHNOLOGIES CO., LTD.
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|  *
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|  * Authors:
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|  *    Longpeng(Mike) <longpeng2@huawei.com>
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|  *
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|  * This work is licensed under the terms of the GNU GPL, version 2 or
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|  * (at your option) any later version.  See the COPYING file in the
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|  * top-level directory.
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|  */
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| #include "qemu/osdep.h"
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| #include "qemu/units.h"
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| #include "crypto/init.h"
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| #include "crypto/cipher.h"
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| 
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| static void test_cipher_speed(size_t chunk_size,
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|                               QCryptoCipherMode mode,
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|                               QCryptoCipherAlgorithm alg)
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| {
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|     QCryptoCipher *cipher;
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|     Error *err = NULL;
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|     uint8_t *key = NULL, *iv = NULL;
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|     uint8_t *plaintext = NULL, *ciphertext = NULL;
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|     size_t nkey;
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|     size_t niv;
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|     const size_t total = 2 * GiB;
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|     size_t remain;
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| 
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|     if (!qcrypto_cipher_supports(alg, mode)) {
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|         return;
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|     }
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| 
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|     nkey = qcrypto_cipher_get_key_len(alg);
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|     niv = qcrypto_cipher_get_iv_len(alg, mode);
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|     if (mode == QCRYPTO_CIPHER_MODE_XTS) {
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|         nkey *= 2;
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|     }
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| 
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|     key = g_new0(uint8_t, nkey);
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|     memset(key, g_test_rand_int(), nkey);
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| 
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|     iv = g_new0(uint8_t, niv);
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|     memset(iv, g_test_rand_int(), niv);
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| 
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|     ciphertext = g_new0(uint8_t, chunk_size);
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| 
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|     plaintext = g_new0(uint8_t, chunk_size);
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|     memset(plaintext, g_test_rand_int(), chunk_size);
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| 
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|     cipher = qcrypto_cipher_new(alg, mode,
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|                                 key, nkey, &err);
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|     g_assert(cipher != NULL);
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| 
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|     if (mode != QCRYPTO_CIPHER_MODE_ECB)
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|         g_assert(qcrypto_cipher_setiv(cipher,
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|                                       iv, niv,
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|                                       &err) == 0);
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| 
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|     g_test_timer_start();
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|     remain = total;
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|     while (remain) {
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|         g_assert(qcrypto_cipher_encrypt(cipher,
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|                                         plaintext,
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|                                         ciphertext,
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|                                         chunk_size,
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|                                         &err) == 0);
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|         remain -= chunk_size;
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|     }
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|     g_test_timer_elapsed();
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| 
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|     g_print("Enc chunk %zu bytes ", chunk_size);
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|     g_print("%.2f MB/sec ", (double)total / MiB / g_test_timer_last());
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| 
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|     g_test_timer_start();
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|     remain = total;
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|     while (remain) {
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|         g_assert(qcrypto_cipher_decrypt(cipher,
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|                                         plaintext,
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|                                         ciphertext,
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|                                         chunk_size,
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|                                         &err) == 0);
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|         remain -= chunk_size;
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|     }
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|     g_test_timer_elapsed();
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| 
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|     g_print("Dec chunk %zu bytes ", chunk_size);
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|     g_print("%.2f MB/sec ", (double)total / MiB / g_test_timer_last());
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| 
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|     qcrypto_cipher_free(cipher);
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|     g_free(plaintext);
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|     g_free(ciphertext);
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|     g_free(iv);
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|     g_free(key);
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| }
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| 
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| 
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| static void test_cipher_speed_ecb_aes_128(const void *opaque)
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| {
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|     size_t chunk_size = (size_t)opaque;
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|     test_cipher_speed(chunk_size,
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|                       QCRYPTO_CIPHER_MODE_ECB,
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|                       QCRYPTO_CIPHER_ALG_AES_128);
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| }
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| 
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| static void test_cipher_speed_ecb_aes_256(const void *opaque)
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| {
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|     size_t chunk_size = (size_t)opaque;
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|     test_cipher_speed(chunk_size,
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|                       QCRYPTO_CIPHER_MODE_ECB,
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|                       QCRYPTO_CIPHER_ALG_AES_256);
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| }
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| 
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| static void test_cipher_speed_cbc_aes_128(const void *opaque)
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| {
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|     size_t chunk_size = (size_t)opaque;
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|     test_cipher_speed(chunk_size,
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|                       QCRYPTO_CIPHER_MODE_CBC,
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|                       QCRYPTO_CIPHER_ALG_AES_128);
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| }
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| 
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| static void test_cipher_speed_cbc_aes_256(const void *opaque)
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| {
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|     size_t chunk_size = (size_t)opaque;
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|     test_cipher_speed(chunk_size,
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|                       QCRYPTO_CIPHER_MODE_CBC,
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|                       QCRYPTO_CIPHER_ALG_AES_256);
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| }
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| 
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| static void test_cipher_speed_ctr_aes_128(const void *opaque)
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| {
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|     size_t chunk_size = (size_t)opaque;
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|     test_cipher_speed(chunk_size,
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|                       QCRYPTO_CIPHER_MODE_CTR,
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|                       QCRYPTO_CIPHER_ALG_AES_128);
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| }
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| 
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| static void test_cipher_speed_ctr_aes_256(const void *opaque)
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| {
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|     size_t chunk_size = (size_t)opaque;
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|     test_cipher_speed(chunk_size,
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|                       QCRYPTO_CIPHER_MODE_CTR,
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|                       QCRYPTO_CIPHER_ALG_AES_256);
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| }
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| 
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| static void test_cipher_speed_xts_aes_128(const void *opaque)
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| {
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|     size_t chunk_size = (size_t)opaque;
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|     test_cipher_speed(chunk_size,
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|                       QCRYPTO_CIPHER_MODE_XTS,
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|                       QCRYPTO_CIPHER_ALG_AES_128);
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| }
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| 
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| static void test_cipher_speed_xts_aes_256(const void *opaque)
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| {
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|     size_t chunk_size = (size_t)opaque;
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|     test_cipher_speed(chunk_size,
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|                       QCRYPTO_CIPHER_MODE_XTS,
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|                       QCRYPTO_CIPHER_ALG_AES_256);
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| }
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| 
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| 
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| int main(int argc, char **argv)
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| {
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|     char *alg = NULL;
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|     char *size = NULL;
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|     g_test_init(&argc, &argv, NULL);
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|     g_assert(qcrypto_init(NULL) == 0);
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| 
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| #define ADD_TEST(mode, cipher, keysize, chunk)                          \
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|     if ((!alg || g_str_equal(alg, #mode)) &&                            \
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|         (!size || g_str_equal(size, #chunk)))                           \
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|         g_test_add_data_func(                                           \
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|         "/crypto/cipher/" #mode "-" #cipher "-" #keysize "/chunk-" #chunk, \
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|         (void *)chunk,                                                  \
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|         test_cipher_speed_ ## mode ## _ ## cipher ## _ ## keysize)
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| 
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|     if (argc >= 2) {
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|         alg = argv[1];
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|     }
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|     if (argc >= 3) {
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|         size = argv[2];
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|     }
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| 
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| #define ADD_TESTS(chunk)                        \
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|     do {                                        \
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|         ADD_TEST(ecb, aes, 128, chunk);         \
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|         ADD_TEST(ecb, aes, 256, chunk);         \
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|         ADD_TEST(cbc, aes, 128, chunk);         \
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|         ADD_TEST(cbc, aes, 256, chunk);         \
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|         ADD_TEST(ctr, aes, 128, chunk);         \
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|         ADD_TEST(ctr, aes, 256, chunk);         \
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|         ADD_TEST(xts, aes, 128, chunk);         \
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|         ADD_TEST(xts, aes, 256, chunk);         \
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|     } while (0)
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| 
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|     ADD_TESTS(512);
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|     ADD_TESTS(4096);
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|     ADD_TESTS(16384);
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|     ADD_TESTS(65536);
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| 
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|     return g_test_run();
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| }
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