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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2018-10-05 03:13:30 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-10-06 02:19:47 +0200 |
| commit | 97e9a61fd5631985232923cff83b2ddc0ca476c0 (patch) | |
| tree | b05245f7be911d091cc0f4e4b6bc3d04db385e9e /src/crypto/zinc/selftest/run.h | |
| parent | global: rename include'd C files to be .c (diff) | |
| download | wireguard-monolithic-historical-97e9a61fd5631985232923cff83b2ddc0ca476c0.tar.xz wireguard-monolithic-historical-97e9a61fd5631985232923cff83b2ddc0ca476c0.zip | |
crypto: test all SIMD combinations
Diffstat (limited to 'src/crypto/zinc/selftest/run.h')
| -rw-r--r-- | src/crypto/zinc/selftest/run.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/crypto/zinc/selftest/run.h b/src/crypto/zinc/selftest/run.h new file mode 100644 index 0000000..4cbafe2 --- /dev/null +++ b/src/crypto/zinc/selftest/run.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ +/* + * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. + */ + +#ifndef _ZINC_SELFTEST_RUN_H +#define _ZINC_SELFTEST_RUN_H + +#include <linux/kernel.h> +#include <linux/printk.h> +#include <linux/bug.h> + +static inline bool selftest_run(const char *name, bool (*selftest)(void), + bool *const nobs[], unsigned int nobs_len) +{ + unsigned long subset = 0, set = 0; + unsigned int i; + bool ret = true; + + BUILD_BUG_ON(!__builtin_constant_p(nobs_len) || + nobs_len >= BITS_PER_LONG); + + if (!IS_ENABLED(CONFIG_ZINC_SELFTEST)) + return true; + + for (i = 0; i < nobs_len; ++i) + set |= ((unsigned long)*nobs[i]) << i; + + do { + for (i = 0; i < nobs_len; ++i) + *nobs[i] = (subset >> i) & 1; + if (!selftest()) { + pr_err("%s self-test combo 0x%lx: FAIL\n", name, + subset); + ret = false; + } + subset = (subset - set) & set; + } while (subset); + + for (i = 0; i < nobs_len; ++i) + *nobs[i] = (set >> i) & 1; + + if (ret) + pr_info("%s self-tests: pass\n", name); + + return !WARN_ON(!ret); +} + +#endif |