diff options
| author | Huang Ying <ying.huang@intel.com> | 2009-03-29 15:41:20 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2009-06-02 14:04:16 +1000 |
| commit | 2cf4ac8beb9dc50a315a6155b7b70e754d511958 (patch) | |
| tree | 0c4043a1455ab581b4e505604df290acd59ef79e /crypto | |
| parent | 150c7e85526e80474b87004f4b420e8834fdeb43 (diff) | |
crypto: aes-ni - Add support for more modes
Because kernel_fpu_begin() and kernel_fpu_end() operations are too
slow, the performance gain of general mode implementation + aes-aesni
is almost all compensated.
The AES-NI support for more modes are implemented as follow:
- Add a new AES algorithm implementation named __aes-aesni without
kernel_fpu_begin/end()
- Use fpu(<mode>(AES)) to provide kenrel_fpu_begin/end() invoking
- Add <mode>(AES) ablkcipher, which uses cryptd(fpu(<mode>(AES))) to
defer cryption to cryptd context in soft_irq context.
Now the ctr, lrw, pcbc and xts support are added.
Performance testing based on dm-crypt shows that cryption time can be
reduced to 50% of general mode implementation + aes-aesni implementation.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index 66ff22a36ed..4dfdd03e708 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -491,6 +491,7 @@ config CRYPTO_AES_NI_INTEL select CRYPTO_AES_X86_64 select CRYPTO_CRYPTD select CRYPTO_ALGAPI + select CRYPTO_FPU help Use Intel AES-NI instructions for AES algorithm. @@ -510,6 +511,10 @@ config CRYPTO_AES_NI_INTEL See <http://csrc.nist.gov/encryption/aes/> for more information. + In addition to AES cipher algorithm support, the + acceleration for some popular block cipher mode is supported + too, including ECB, CBC, CTR, LRW, PCBC, XTS. + config CRYPTO_ANUBIS tristate "Anubis cipher algorithm" select CRYPTO_ALGAPI |