Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Eric Biggers |
148 |
72.20% |
1 |
12.50% |
| Jussi Kivilinna |
34 |
16.59% |
1 |
12.50% |
| David McCullough |
12 |
5.85% |
1 |
12.50% |
| Herbert Xu |
6 |
2.93% |
3 |
37.50% |
| Ard Biesheuvel |
5 |
2.44% |
2 |
25.00% |
| Total |
205 |
|
8 |
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* SHA-1 optimized for ARM
*
* Copyright 2025 Google LLC
*/
#include <asm/neon.h>
#include <asm/simd.h>
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon);
static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_ce);
asmlinkage void sha1_block_data_order(struct sha1_block_state *state,
const u8 *data, size_t nblocks);
asmlinkage void sha1_transform_neon(struct sha1_block_state *state,
const u8 *data, size_t nblocks);
asmlinkage void sha1_ce_transform(struct sha1_block_state *state,
const u8 *data, size_t nblocks);
static void sha1_blocks(struct sha1_block_state *state,
const u8 *data, size_t nblocks)
{
if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) &&
static_branch_likely(&have_neon) && likely(may_use_simd())) {
kernel_neon_begin();
if (static_branch_likely(&have_ce))
sha1_ce_transform(state, data, nblocks);
else
sha1_transform_neon(state, data, nblocks);
kernel_neon_end();
} else {
sha1_block_data_order(state, data, nblocks);
}
}
#ifdef CONFIG_KERNEL_MODE_NEON
#define sha1_mod_init_arch sha1_mod_init_arch
static void sha1_mod_init_arch(void)
{
if (elf_hwcap & HWCAP_NEON) {
static_branch_enable(&have_neon);
if (elf_hwcap2 & HWCAP2_SHA1)
static_branch_enable(&have_ce);
}
}
#endif /* CONFIG_KERNEL_MODE_NEON */