| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (C) 2023 Oracle. All Rights Reserved. |
| * Author: Darrick J. Wong <djwong@kernel.org> |
| */ |
| #include "libfrog/randbytes.h" |
| |
| #ifndef __LIBFROG_DAHASHSELFTEST_H__ |
| #define __LIBFROG_DAHASHSELFTEST_H__ |
| |
| /* 100 test cases */ |
| static struct dahash_test { |
| uint16_t start; /* random 12 bit offset in buf */ |
| uint16_t length; /* random 8 bit length of test */ |
| xfs_dahash_t dahash; /* expected dahash result */ |
| } dahash_tests[] = |
| { |
| {0x0567, 0x0097, 0x96951389}, |
| {0x0869, 0x0055, 0x6455ab4f}, |
| {0x0c51, 0x00be, 0x8663afde}, |
| {0x044a, 0x00fc, 0x98fbe432}, |
| {0x0f29, 0x0079, 0x42371997}, |
| {0x08ba, 0x0052, 0x942be4f7}, |
| {0x01f2, 0x0013, 0x5262687e}, |
| {0x09e3, 0x00e2, 0x8ffb0908}, |
| {0x007c, 0x0051, 0xb3158491}, |
| {0x0854, 0x001f, 0x83bb20d9}, |
| {0x031b, 0x0008, 0x98970bdf}, |
| {0x0de7, 0x0027, 0xbfbf6f6c}, |
| {0x0f76, 0x0005, 0x906a7105}, |
| {0x092e, 0x00d0, 0x86631850}, |
| {0x0233, 0x0082, 0xdbdd914e}, |
| {0x04c9, 0x0075, 0x5a400a9e}, |
| {0x0b66, 0x0099, 0xae128b45}, |
| {0x000d, 0x00ed, 0xe61c216a}, |
| {0x0a31, 0x003d, 0xf69663b9}, |
| {0x00a3, 0x0052, 0x643c39ae}, |
| {0x0125, 0x00d5, 0x7c310b0d}, |
| {0x0105, 0x004a, 0x06a77e74}, |
| {0x0858, 0x008e, 0x265bc739}, |
| {0x045e, 0x0095, 0x13d6b192}, |
| {0x0dab, 0x003c, 0xc4498704}, |
| {0x00cd, 0x00b5, 0x802a4e2d}, |
| {0x069b, 0x008c, 0x5df60f71}, |
| {0x0454, 0x006c, 0x5f03d8bb}, |
| {0x040e, 0x0032, 0x0ce513b5}, |
| {0x0874, 0x00e2, 0x6a811fb3}, |
| {0x0521, 0x00b4, 0x93296833}, |
| {0x0ddc, 0x00cf, 0xf9305338}, |
| {0x0a70, 0x0023, 0x239549ea}, |
| {0x083e, 0x0027, 0x2d88ba97}, |
| {0x0241, 0x00a7, 0xfe0b32e1}, |
| {0x0dfc, 0x0096, 0x1a11e815}, |
| {0x023e, 0x001e, 0xebc9a1f3}, |
| {0x067e, 0x0066, 0xb1067f81}, |
| {0x09ea, 0x000e, 0x46fd7247}, |
| {0x036b, 0x008c, 0x1a39acdf}, |
| {0x078f, 0x0030, 0x964042ab}, |
| {0x085c, 0x008f, 0x1829edab}, |
| {0x02ec, 0x009f, 0x6aefa72d}, |
| {0x043b, 0x00ce, 0x65642ff5}, |
| {0x0a32, 0x00b8, 0xbd82759e}, |
| {0x0d3c, 0x0087, 0xf4d66d54}, |
| {0x09ec, 0x008a, 0x06bfa1ff}, |
| {0x0902, 0x0015, 0x755025d2}, |
| {0x08fe, 0x000e, 0xf690ce2d}, |
| {0x00fb, 0x00dc, 0xe55f1528}, |
| {0x0eaa, 0x003a, 0x0fe0a8d7}, |
| {0x05fb, 0x0006, 0x86281cfb}, |
| {0x0dd1, 0x00a7, 0x60ab51b4}, |
| {0x0005, 0x001b, 0xf51d969b}, |
| {0x077c, 0x00dd, 0xc2fed268}, |
| {0x0575, 0x00f5, 0x432c0b1a}, |
| {0x05be, 0x0088, 0x78baa04b}, |
| {0x0c89, 0x0068, 0xeda9e428}, |
| {0x0f5c, 0x0068, 0xec143c76}, |
| {0x06a8, 0x0009, 0xd72651ce}, |
| {0x060f, 0x008e, 0x765426cd}, |
| {0x07b1, 0x0047, 0x2cfcfa0c}, |
| {0x04f1, 0x0041, 0x55b172f9}, |
| {0x0e05, 0x00ac, 0x61efde93}, |
| {0x0bf7, 0x0097, 0x05b83eee}, |
| {0x04e9, 0x00f3, 0x9928223a}, |
| {0x023a, 0x0005, 0xdfada9bc}, |
| {0x0acb, 0x000e, 0x2217cecd}, |
| {0x0148, 0x0060, 0xbc3f7405}, |
| {0x0764, 0x0059, 0xcbc201b1}, |
| {0x021f, 0x0059, 0x5d6b2256}, |
| {0x0f1e, 0x006c, 0xdefeeb45}, |
| {0x071c, 0x00b9, 0xb9b59309}, |
| {0x0564, 0x0063, 0xae064271}, |
| {0x0b14, 0x0044, 0xdb867d9b}, |
| {0x0e5a, 0x0055, 0xff06b685}, |
| {0x015e, 0x00ba, 0x1115ccbc}, |
| {0x0379, 0x00e6, 0x5f4e58dd}, |
| {0x013b, 0x0067, 0x4897427e}, |
| {0x0e64, 0x0071, 0x7af2b7a4}, |
| {0x0a11, 0x0050, 0x92105726}, |
| {0x0109, 0x0055, 0xd0d000f9}, |
| {0x00aa, 0x0022, 0x815d229d}, |
| {0x09ac, 0x004f, 0x02f9d985}, |
| {0x0e1b, 0x00ce, 0x5cf92ab4}, |
| {0x08af, 0x00d8, 0x17ca72d1}, |
| {0x0e33, 0x000a, 0xda2dba6b}, |
| {0x0ee3, 0x006a, 0xb00048e5}, |
| {0x0648, 0x001a, 0x2364b8cb}, |
| {0x0315, 0x0085, 0x0596fd0d}, |
| {0x0fbb, 0x003e, 0x298230ca}, |
| {0x0422, 0x006a, 0x78ada4ab}, |
| {0x04ba, 0x0073, 0xced1fbc2}, |
| {0x007d, 0x0061, 0x4b7ff236}, |
| {0x070b, 0x00d0, 0x261cf0ae}, |
| {0x0c1a, 0x0035, 0x8be92ee2}, |
| {0x0af8, 0x0063, 0x824dcf03}, |
| {0x08f8, 0x006d, 0xd289710c}, |
| {0x021b, 0x00ee, 0x6ac1c41d}, |
| {0x05b5, 0x00da, 0x8e52f0e2}, |
| }; |
| |
| /* Don't print anything to stdout. */ |
| #define DAHASHTEST_QUIET (1U << 0) |
| |
| static int |
| dahash_test( |
| unsigned int flags) |
| { |
| int i; |
| int errors = 0; |
| int bytes = 0; |
| struct timeval start, stop; |
| uint64_t usec; |
| |
| /* keep static to prevent cache warming code from |
| * getting eliminated by the compiler */ |
| static xfs_dahash_t hash; |
| |
| /* pre-warm the cache */ |
| for (i = 0; i < ARRAY_SIZE(dahash_tests); i++) { |
| bytes += 2 * dahash_tests[i].length; |
| |
| hash ^= libxfs_da_hashname( |
| randbytes_test_buf + dahash_tests[i].start, |
| dahash_tests[i].length); |
| } |
| |
| gettimeofday(&start, NULL); |
| for (i = 0; i < ARRAY_SIZE(dahash_tests); i++) { |
| hash = libxfs_da_hashname( |
| randbytes_test_buf + dahash_tests[i].start, |
| dahash_tests[i].length); |
| if (hash != dahash_tests[i].dahash) |
| errors++; |
| } |
| gettimeofday(&stop, NULL); |
| |
| usec = stop.tv_usec - start.tv_usec + |
| 1000000 * (stop.tv_sec - start.tv_sec); |
| |
| if (flags & DAHASHTEST_QUIET) |
| return errors; |
| |
| if (errors) |
| printf("dahash: %d self tests failed\n", errors); |
| else { |
| printf("dahash: tests passed, %d bytes in %" PRIu64 " usec\n", |
| bytes, usec); |
| } |
| |
| return errors; |
| } |
| |
| #endif /* __LIBFROG_DAHASHSELFTEST_H__ */ |