static int __init chacha20_simd_mod_init(void)
{
if (!(elf_hwcap & HWCAP_ASIMD))
return -ENODEV;
return crypto_register_skcipher(&alg);
}
static int __init chacha20_simd_mod_init(void)
{
if (!boot_cpu_has(X86_FEATURE_SSSE3))
return -ENODEV;
#ifdef CONFIG_AS_AVX2
chacha20_use_avx2 = boot_cpu_has(X86_FEATURE_AVX) &&
boot_cpu_has(X86_FEATURE_AVX2) &&
cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL);
#endif
return crypto_register_skcipher(&alg);
}
struct simd_skcipher_alg *simd_skcipher_create_compat(const char *algname,
const char *drvname,
const char *basename)
{
struct simd_skcipher_alg *salg;
struct crypto_skcipher *tfm;
struct skcipher_alg *ialg;
struct skcipher_alg *alg;
int err;
tfm = crypto_alloc_skcipher(basename, CRYPTO_ALG_INTERNAL,
CRYPTO_ALG_INTERNAL | CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return ERR_CAST(tfm);
ialg = crypto_skcipher_alg(tfm);
salg = kzalloc(sizeof(*salg), GFP_KERNEL);
if (!salg) {
salg = ERR_PTR(-ENOMEM);
goto out_put_tfm;
}
salg->ialg_name = basename;
alg = &salg->alg;
err = -ENAMETOOLONG;
if (snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", algname) >=
CRYPTO_MAX_ALG_NAME)
goto out_free_salg;
if (snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
drvname) >= CRYPTO_MAX_ALG_NAME)
goto out_free_salg;
alg->base.cra_flags = CRYPTO_ALG_ASYNC;
alg->base.cra_priority = ialg->base.cra_priority;
alg->base.cra_blocksize = ialg->base.cra_blocksize;
alg->base.cra_alignmask = ialg->base.cra_alignmask;
alg->base.cra_module = ialg->base.cra_module;
alg->base.cra_ctxsize = sizeof(struct simd_skcipher_ctx);
alg->ivsize = ialg->ivsize;
alg->chunksize = ialg->chunksize;
alg->min_keysize = ialg->min_keysize;
alg->max_keysize = ialg->max_keysize;
alg->init = simd_skcipher_init;
alg->exit = simd_skcipher_exit;
alg->setkey = simd_skcipher_setkey;
alg->encrypt = simd_skcipher_encrypt;
alg->decrypt = simd_skcipher_decrypt;
err = crypto_register_skcipher(alg);
if (err)
goto out_free_salg;
out_put_tfm:
crypto_free_skcipher(tfm);
return salg;
out_free_salg:
kfree(salg);
salg = ERR_PTR(err);
goto out_put_tfm;
}
