[PADLOCK] Move fast path work into aes_set_key and upper layer
Most of the work done aes_padlock can be done in aes_set_key. This
means that we only have to do it once when the key changes rather
than every time we perform an encryption or decryption.
This patch also sets cra_alignmask to let the upper layer ensure
that the buffers fed to us are aligned correctly.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/crypto/padlock.h b/drivers/crypto/padlock.h
index 7a50060..3cf2b7a 100644
--- a/drivers/crypto/padlock.h
+++ b/drivers/crypto/padlock.h
@@ -13,18 +13,18 @@
#ifndef _CRYPTO_PADLOCK_H
#define _CRYPTO_PADLOCK_H
+#define PADLOCK_ALIGNMENT 16
+
/* Control word. */
-union cword {
- uint32_t cword[4];
- struct {
- int rounds:4;
- int algo:3;
- int keygen:1;
- int interm:1;
- int encdec:1;
- int ksize:2;
- } b;
-};
+struct cword {
+ int __attribute__ ((__packed__))
+ rounds:4,
+ algo:3,
+ keygen:1,
+ interm:1,
+ encdec:1,
+ ksize:2;
+} __attribute__ ((__aligned__(PADLOCK_ALIGNMENT)));
#define PFX "padlock: "
