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authorEric Biggers <ebiggers@google.com>2019-06-02 22:45:16 -0700
committerHerbert Xu <herbert@gondor.apana.org.au>2019-06-13 14:31:40 +0800
commitf2fe1154542e69976f859e573dc4d9aa0b76a495 (patch)
tree6d6e6fe0d9e32d62712bc1d1e7725bfbaa50d7c4 /crypto
parent07269559ac0bf778c6eadcaa9104e7adb4d46f33 (diff)
downloadlinux-f2fe1154542e69976f859e573dc4d9aa0b76a495.tar.bz2
crypto: aead - un-inline encrypt and decrypt functions
crypto_aead_encrypt() and crypto_aead_decrypt() have grown to be more than a single indirect function call. They now also check whether a key has been set, the decryption side checks whether the input is at least as long as the authentication tag length, and with CONFIG_CRYPTO_STATS=y they also update the crypto statistics. That can add up to a lot of bloat at every call site. Moreover, these always involve a function call anyway, which greatly limits the benefits of inlining. So change them to be non-inline. Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/aead.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/crypto/aead.c b/crypto/aead.c
index 4908b5e846f0..fc1d7ad8a487 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -89,6 +89,42 @@ int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
}
EXPORT_SYMBOL_GPL(crypto_aead_setauthsize);
+int crypto_aead_encrypt(struct aead_request *req)
+{
+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
+ struct crypto_alg *alg = aead->base.__crt_alg;
+ unsigned int cryptlen = req->cryptlen;
+ int ret;
+
+ crypto_stats_get(alg);
+ if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
+ ret = -ENOKEY;
+ else
+ ret = crypto_aead_alg(aead)->encrypt(req);
+ crypto_stats_aead_encrypt(cryptlen, alg, ret);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_aead_encrypt);
+
+int crypto_aead_decrypt(struct aead_request *req)
+{
+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
+ struct crypto_alg *alg = aead->base.__crt_alg;
+ unsigned int cryptlen = req->cryptlen;
+ int ret;
+
+ crypto_stats_get(alg);
+ if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
+ ret = -ENOKEY;
+ else if (req->cryptlen < crypto_aead_authsize(aead))
+ ret = -EINVAL;
+ else
+ ret = crypto_aead_alg(aead)->decrypt(req);
+ crypto_stats_aead_decrypt(cryptlen, alg, ret);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_aead_decrypt);
+
static void crypto_aead_exit_tfm(struct crypto_tfm *tfm)
{
struct crypto_aead *aead = __crypto_aead_cast(tfm);