1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2021 Intel Corporation 3 */ 4 5 #include <stdio.h> 6 #include <stdint.h> 7 #include <stdlib.h> 8 #include <math.h> 9 10 #include <rte_cycles.h> 11 #include <rte_malloc.h> 12 #include <rte_random.h> 13 #include <rte_thash.h> 14 15 #include "test.h" 16 17 #define ITERATIONS (1 << 15) 18 #define BATCH_SZ (1 << 10) 19 20 #define IPV4_2_TUPLE_LEN (8) 21 #define IPV4_4_TUPLE_LEN (12) 22 #define IPV6_2_TUPLE_LEN (32) 23 #define IPV6_4_TUPLE_LEN (36) 24 25 26 static const uint8_t default_rss_key[] = { 27 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, 28 0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, 29 0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4, 30 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c, 31 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa, 32 }; 33 34 enum test_rss_type { 35 TEST_SOFTRSS, 36 TEST_SOFTRSS_BE, 37 TEST_RSS_GFNI 38 }; 39 40 static inline uint64_t 41 run_rss_calc(uint32_t *tuples[BATCH_SZ], enum test_rss_type type, int len, 42 const void *key) 43 { 44 int i, j; 45 uint64_t start_tsc, end_tsc; 46 volatile uint32_t hash = 0; 47 48 start_tsc = rte_rdtsc_precise(); 49 for (i = 0; i < ITERATIONS; i++) { 50 for (j = 0; j < BATCH_SZ; j++) { 51 if (type == TEST_SOFTRSS) 52 hash ^= rte_softrss(tuples[j], len / 53 sizeof(uint32_t), (const uint8_t *)key); 54 else if (type == TEST_SOFTRSS_BE) 55 hash ^= rte_softrss_be(tuples[j], len / 56 sizeof(uint32_t), (const uint8_t *)key); 57 else 58 hash ^= rte_thash_gfni((const uint64_t *)key, 59 (uint8_t *)tuples[j], len); 60 } 61 } 62 end_tsc = rte_rdtsc_precise(); 63 64 return end_tsc - start_tsc; 65 } 66 67 static inline uint64_t 68 run_rss_calc_bulk(uint32_t *tuples[BATCH_SZ], int len, const void *key) 69 { 70 int i; 71 uint64_t start_tsc, end_tsc; 72 uint32_t bulk_hash[BATCH_SZ] = { 0 }; 73 74 start_tsc = rte_rdtsc_precise(); 75 for (i = 0; i < ITERATIONS; i++) 76 rte_thash_gfni_bulk((const uint64_t *)key, len, 77 (uint8_t **)tuples, bulk_hash, BATCH_SZ); 78 79 end_tsc = rte_rdtsc_precise(); 80 81 return end_tsc - start_tsc; 82 } 83 84 static void 85 run_thash_test(unsigned int tuple_len) 86 { 87 uint32_t *tuples[BATCH_SZ]; 88 unsigned int i, j; 89 uint32_t len = RTE_ALIGN_CEIL(tuple_len, sizeof(uint32_t)); 90 uint64_t tsc_diff; 91 92 for (i = 0; i < BATCH_SZ; i++) { 93 tuples[i] = rte_zmalloc(NULL, len, 0); 94 for (j = 0; j < len / sizeof(uint32_t); j++) 95 tuples[i][j] = rte_rand(); 96 } 97 98 tsc_diff = run_rss_calc(tuples, TEST_SOFTRSS, len, default_rss_key); 99 printf("Average rte_softrss() takes \t\t%.1f cycles for key len %d\n", 100 (double)(tsc_diff) / (double)(ITERATIONS * BATCH_SZ), len); 101 102 tsc_diff = run_rss_calc(tuples, TEST_SOFTRSS_BE, len, 103 default_rss_key); 104 printf("Average rte_softrss_be() takes \t\t%.1f cycles for key len %d\n", 105 (double)(tsc_diff) / (double)(ITERATIONS * BATCH_SZ), len); 106 107 if (!rte_thash_gfni_supported()) 108 return; 109 110 uint64_t rss_key_matrixes[RTE_DIM(default_rss_key)]; 111 112 rte_thash_complete_matrix(rss_key_matrixes, default_rss_key, 113 RTE_DIM(default_rss_key)); 114 115 tsc_diff = run_rss_calc(tuples, TEST_RSS_GFNI, len, rss_key_matrixes); 116 printf("Average rte_thash_gfni takes \t\t%.1f cycles for key len %d\n", 117 (double)(tsc_diff) / (double)(ITERATIONS * BATCH_SZ), len); 118 119 tsc_diff = run_rss_calc_bulk(tuples, len, rss_key_matrixes); 120 printf("Average rte_thash_gfni_bulk takes \t%.1f cycles for key len %d\n", 121 (double)(tsc_diff) / (double)(ITERATIONS * BATCH_SZ), len); 122 } 123 124 static int 125 test_thash_perf(void) 126 { 127 run_thash_test(IPV4_2_TUPLE_LEN); 128 run_thash_test(IPV4_4_TUPLE_LEN); 129 run_thash_test(IPV6_2_TUPLE_LEN); 130 run_thash_test(IPV6_4_TUPLE_LEN); 131 132 return 0; 133 } 134 135 REGISTER_TEST_COMMAND(thash_perf_autotest, test_thash_perf); 136