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authorTyler Hicks <tyhicks@canonical.com>2013-05-09 16:55:07 -0700
committerTyler Hicks <tyhicks@canonical.com>2013-05-09 16:55:07 -0700
commit4dfea4f0d7f13309d2ee112a2584210cae4320c6 (patch)
tree53af474217e7072070f260f4284d988b75456332 /fs/ecryptfs/ecryptfs_kernel.h
parentc1be5a5b1b355d40e6cf79cc979eb66dafa24ad1 (diff)
downloadlinux-4dfea4f0d7f13309d2ee112a2584210cae4320c6.tar.bz2
eCryptfs: Use the ablkcipher crypto API
Make the switch from the blkcipher kernel crypto interface to the ablkcipher interface. encrypt_scatterlist() and decrypt_scatterlist() now use the ablkcipher interface but, from the eCryptfs standpoint, still treat the crypto operation as a synchronous operation. They submit the async request and then wait until the operation is finished before they return. Most of the changes are contained inside those two functions. Despite waiting for the completion of the crypto operation, the ablkcipher interface provides performance increases in most cases when used on AES-NI capable hardware. Signed-off-by: Tyler Hicks <tyhicks@canonical.com> Acked-by: Colin King <colin.king@canonical.com> Reviewed-by: Zeev Zilberman <zeev@annapurnaLabs.com> Cc: Dustin Kirkland <dustin.kirkland@gazzang.com> Cc: Tim Chen <tim.c.chen@intel.com> Cc: Ying Huang <ying.huang@intel.com> Cc: Thieu Le <thieule@google.com> Cc: Li Wang <dragonylffly@163.com> Cc: Jarkko Sakkinen <jarkko.sakkinen@iki.fi>
Diffstat (limited to 'fs/ecryptfs/ecryptfs_kernel.h')
-rw-r--r--fs/ecryptfs/ecryptfs_kernel.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index dd299b389d4e..f622a733f7ad 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -38,6 +38,7 @@
#include <linux/nsproxy.h>
#include <linux/backing-dev.h>
#include <linux/ecryptfs.h>
+#include <linux/crypto.h>
#define ECRYPTFS_DEFAULT_IV_BYTES 16
#define ECRYPTFS_DEFAULT_EXTENT_SIZE 4096
@@ -233,7 +234,7 @@ struct ecryptfs_crypt_stat {
size_t extent_shift;
unsigned int extent_mask;
struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
- struct crypto_blkcipher *tfm;
+ struct crypto_ablkcipher *tfm;
struct crypto_hash *hash_tfm; /* Crypto context for generating
* the initialization vectors */
unsigned char cipher[ECRYPTFS_MAX_CIPHER_NAME_SIZE];