lib/crypto/arm/sha256.h

Source file repositories/reference/linux-study-clean/lib/crypto/arm/sha256.h

File Facts

System
Linux kernel
Corpus path
lib/crypto/arm/sha256.h
Extension
.h
Size
1370 bytes
Lines
47
Domain
Kernel Services
Bucket
lib
Inferred role
Kernel Services: implementation source
Status
source implementation candidate

Why This File Exists

Shared kernel service surface used by multiple subsystems, including helpers, cryptography, virtualization support, and async I/O infrastructure.

Dependency Surface

Detected Declarations

Annotated Snippet

static_branch_likely(&have_neon) && likely(may_use_simd())) {
		scoped_ksimd() {
			if (static_branch_likely(&have_ce))
				sha256_ce_transform(state, data, nblocks);
			else
				sha256_block_data_order_neon(state, data, nblocks);
		}
	} else {
		sha256_block_data_order(state, data, nblocks);
	}
}

#ifdef CONFIG_KERNEL_MODE_NEON
#define sha256_mod_init_arch sha256_mod_init_arch
static void sha256_mod_init_arch(void)
{
	if (elf_hwcap & HWCAP_NEON) {
		static_branch_enable(&have_neon);
		if (elf_hwcap2 & HWCAP2_SHA2)
			static_branch_enable(&have_ce);
	}
}
#endif /* CONFIG_KERNEL_MODE_NEON */

Annotation

Implementation Notes