diff options
Diffstat (limited to 'arch/arm64/crypto/nhpoly1305-neon-glue.c')
| -rw-r--r-- | arch/arm64/crypto/nhpoly1305-neon-glue.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/arch/arm64/crypto/nhpoly1305-neon-glue.c b/arch/arm64/crypto/nhpoly1305-neon-glue.c index 22cc32ac9448..013de6ac569a 100644 --- a/arch/arm64/crypto/nhpoly1305-neon-glue.c +++ b/arch/arm64/crypto/nhpoly1305-neon-glue.c @@ -9,37 +9,38 @@ #include <asm/neon.h> #include <asm/simd.h> #include <crypto/internal/hash.h> +#include <crypto/internal/simd.h> #include <crypto/nhpoly1305.h> #include <linux/module.h> asmlinkage void nh_neon(const u32 *key, const u8 *message, size_t message_len, - u8 hash[NH_HASH_BYTES]); - -/* wrapper to avoid indirect call to assembly, which doesn't work with CFI */ -static void _nh_neon(const u32 *key, const u8 *message, size_t message_len, - __le64 hash[NH_NUM_PASSES]) -{ - nh_neon(key, message, message_len, (u8 *)hash); -} + __le64 hash[NH_NUM_PASSES]); static int nhpoly1305_neon_update(struct shash_desc *desc, const u8 *src, unsigned int srclen) { - if (srclen < 64 || !may_use_simd()) + if (srclen < 64 || !crypto_simd_usable()) return crypto_nhpoly1305_update(desc, src, srclen); do { - unsigned int n = min_t(unsigned int, srclen, PAGE_SIZE); + unsigned int n = min_t(unsigned int, srclen, SZ_4K); - kernel_neon_begin(); - crypto_nhpoly1305_update_helper(desc, src, n, _nh_neon); - kernel_neon_end(); + scoped_ksimd() + crypto_nhpoly1305_update_helper(desc, src, n, nh_neon); src += n; srclen -= n; } while (srclen); return 0; } +static int nhpoly1305_neon_digest(struct shash_desc *desc, + const u8 *src, unsigned int srclen, u8 *out) +{ + return crypto_nhpoly1305_init(desc) ?: + nhpoly1305_neon_update(desc, src, srclen) ?: + crypto_nhpoly1305_final(desc, out); +} + static struct shash_alg nhpoly1305_alg = { .base.cra_name = "nhpoly1305", .base.cra_driver_name = "nhpoly1305-neon", @@ -50,13 +51,14 @@ static struct shash_alg nhpoly1305_alg = { .init = crypto_nhpoly1305_init, .update = nhpoly1305_neon_update, .final = crypto_nhpoly1305_final, + .digest = nhpoly1305_neon_digest, .setkey = crypto_nhpoly1305_setkey, .descsize = sizeof(struct nhpoly1305_state), }; static int __init nhpoly1305_mod_init(void) { - if (!(elf_hwcap & HWCAP_ASIMD)) + if (!cpu_have_named_feature(ASIMD)) return -ENODEV; return crypto_register_shash(&nhpoly1305_alg); |