diff options
| author | Eric Biggers <ebiggers@google.com> | 2019-06-02 22:45:16 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-06-13 14:31:40 +0800 |
| commit | f2fe1154542e69976f859e573dc4d9aa0b76a495 (patch) | |
| tree | 6d6e6fe0d9e32d62712bc1d1e7725bfbaa50d7c4 /crypto | |
| parent | 07269559ac0bf778c6eadcaa9104e7adb4d46f33 (diff) | |
| download | linux-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.c | 36 |
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); |