diff options
| author | Anton Blanchard <anton@samba.org> | 2016-06-10 16:47:03 +1000 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-07-10 20:19:55 -0400 |
| commit | 9341331d504d3acd5b3ad0763bb9d23cd3b28944 (patch) | |
| tree | 865e928ee701053eb3e580ab170f9a2c0450fc8b /drivers/crypto | |
| parent | 515f30350a5e240febb0b710dbb68abe1f293464 (diff) | |
crypto: vmx - Increase priority of aes-cbc cipher
[ Upstream commit 12d3f49e1ffbbf8cbbb60acae5a21103c5c841ac ]
All of the VMX AES ciphers (AES, AES-CBC and AES-CTR) are set at
priority 1000. Unfortunately this means we never use AES-CBC and
AES-CTR, because the base AES-CBC cipher that is implemented on
top of AES inherits its priority.
To fix this, AES-CBC and AES-CTR have to be a higher priority. Set
them to 2000.
Testing on a POWER8 with:
cryptsetup benchmark --cipher aes --key-size 256
Shows decryption speed increase from 402.4 MB/s to 3069.2 MB/s,
over 7x faster. Thanks to Mike Strosaker for helping me debug
this issue.
Fixes: 8c755ace357c ("crypto: vmx - Adding CBC routines for VMX module")
Cc: stable@vger.kernel.org
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/vmx/aes_cbc.c | 2 | ||||
| -rw-r--r-- | drivers/crypto/vmx/aes_ctr.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/crypto/vmx/aes_cbc.c b/drivers/crypto/vmx/aes_cbc.c index c8e7f653e5d3..f508cea02039 100644 --- a/drivers/crypto/vmx/aes_cbc.c +++ b/drivers/crypto/vmx/aes_cbc.c @@ -167,7 +167,7 @@ struct crypto_alg p8_aes_cbc_alg = { .cra_name = "cbc(aes)", .cra_driver_name = "p8_aes_cbc", .cra_module = THIS_MODULE, - .cra_priority = 1000, + .cra_priority = 2000, .cra_type = &crypto_blkcipher_type, .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_NEED_FALLBACK, .cra_alignmask = 0, diff --git a/drivers/crypto/vmx/aes_ctr.c b/drivers/crypto/vmx/aes_ctr.c index 266e708d63df..d8fa3b4ec17f 100644 --- a/drivers/crypto/vmx/aes_ctr.c +++ b/drivers/crypto/vmx/aes_ctr.c @@ -151,7 +151,7 @@ struct crypto_alg p8_aes_ctr_alg = { .cra_name = "ctr(aes)", .cra_driver_name = "p8_aes_ctr", .cra_module = THIS_MODULE, - .cra_priority = 1000, + .cra_priority = 2000, .cra_type = &crypto_blkcipher_type, .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_NEED_FALLBACK, .cra_alignmask = 0, |