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authorHuang Ying <ying.huang@intel.com>2009-01-09 16:49:30 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2009-02-18 16:48:04 +0800
commit109568e110ed67d4be1b28609b9fa00fca97f8eb (patch)
treef40a1c6a35bb45abf7edcf8ab55ed75af6d405fb /include/crypto/aes.h
parent8eb2dfac41c71701bb741f496f0cb7b7e4a3c3f6 (diff)
download96b-common-109568e110ed67d4be1b28609b9fa00fca97f8eb.tar.gz
crypto: aes - Move key_length in struct crypto_aes_ctx to be the last field
The Intel AES-NI AES acceleration instructions need key_enc, key_dec in struct crypto_aes_ctx to be 16 byte aligned, it make this easier to move key_length to be the last one. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto/aes.h')
-rw-r--r--include/crypto/aes.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/crypto/aes.h b/include/crypto/aes.h
index 656a4c66a568..7524ba3b6f3c 100644
--- a/include/crypto/aes.h
+++ b/include/crypto/aes.h
@@ -17,10 +17,14 @@
#define AES_MAX_KEYLENGTH (15 * 16)
#define AES_MAX_KEYLENGTH_U32 (AES_MAX_KEYLENGTH / sizeof(u32))
+/*
+ * Please ensure that the first two fields are 16-byte aligned
+ * relative to the start of the structure, i.e., don't move them!
+ */
struct crypto_aes_ctx {
- u32 key_length;
u32 key_enc[AES_MAX_KEYLENGTH_U32];
u32 key_dec[AES_MAX_KEYLENGTH_U32];
+ u32 key_length;
};
extern const u32 crypto_ft_tab[4][256];