Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...

[linux-2.6.git] / drivers / crypto / padlock-aes.c

diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 5158a9d..b643d71 100644 (file)
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -59,16 +59,20 @@
 #define AES_EXTENDED_KEY_SIZE  64      /* in uint32_t units */
 #define AES_EXTENDED_KEY_SIZE_B        (AES_EXTENDED_KEY_SIZE * sizeof(uint32_t))
 
+/* Whenever making any changes to the following
+ * structure *make sure* you keep E, d_data
+ * and cword aligned on 16 Bytes boundaries!!! */
 struct aes_ctx {
-       uint32_t e_data[AES_EXTENDED_KEY_SIZE];
-       uint32_t d_data[AES_EXTENDED_KEY_SIZE];
        struct {
                struct cword encrypt;
                struct cword decrypt;
        } cword;
-       uint32_t *E;
-       uint32_t *D;
+       u32 *D;
        int key_length;
+       u32 E[AES_EXTENDED_KEY_SIZE]
+               __attribute__ ((__aligned__(PADLOCK_ALIGNMENT)));
+       u32 d_data[AES_EXTENDED_KEY_SIZE]
+               __attribute__ ((__aligned__(PADLOCK_ALIGNMENT)));
 };
 
 /* ====== Key management routines ====== */
@@ -282,19 +286,20 @@ aes_hw_extkey_available(uint8_t key_len)
        return 0;
 }
 
-static inline struct aes_ctx *aes_ctx(void *ctx)
+static inline struct aes_ctx *aes_ctx(struct crypto_tfm *tfm)
 {
+       unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm);
        unsigned long align = PADLOCK_ALIGNMENT;
 
        if (align <= crypto_tfm_ctx_alignment())
                align = 1;
-       return (struct aes_ctx *)ALIGN((unsigned long)ctx, align);
+       return (struct aes_ctx *)ALIGN(addr, align);
 }
 
-static int
-aes_set_key(void *ctx_arg, const uint8_t *in_key, unsigned int key_len, uint32_t *flags)
+static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+                      unsigned int key_len, u32 *flags)
 {
-       struct aes_ctx *ctx = aes_ctx(ctx_arg);
+       struct aes_ctx *ctx = aes_ctx(tfm);
        const __le32 *key = (const __le32 *)in_key;
        uint32_t i, t, u, v, w;
        uint32_t P[AES_EXTENDED_KEY_SIZE];
@@ -312,8 +317,7 @@ aes_set_key(void *ctx_arg, const uint8_t *in_key, unsigned int key_len, uint32_t
         * itself we must supply the plain key for both encryption
         * and decryption.
         */
-       ctx->E = ctx->e_data;
-       ctx->D = ctx->e_data;
+       ctx->D = ctx->E;
 
        E_KEY[0] = le32_to_cpu(key[0]);
        E_KEY[1] = le32_to_cpu(key[1]);
@@ -414,24 +418,22 @@ static inline u8 *padlock_xcrypt_cbc(const u8 *input, u8 *output, void *key,
        return iv;
 }
 
-static void
-aes_encrypt(void *ctx_arg, uint8_t *out, const uint8_t *in)
+static void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
-       struct aes_ctx *ctx = aes_ctx(ctx_arg);
+       struct aes_ctx *ctx = aes_ctx(tfm);
        padlock_xcrypt_ecb(in, out, ctx->E, &ctx->cword.encrypt, 1);
 }
 
-static void
-aes_decrypt(void *ctx_arg, uint8_t *out, const uint8_t *in)
+static void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
-       struct aes_ctx *ctx = aes_ctx(ctx_arg);
+       struct aes_ctx *ctx = aes_ctx(tfm);
        padlock_xcrypt_ecb(in, out, ctx->D, &ctx->cword.decrypt, 1);
 }
 
 static unsigned int aes_encrypt_ecb(const struct cipher_desc *desc, u8 *out,
                                    const u8 *in, unsigned int nbytes)
 {
-       struct aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(desc->tfm));
+       struct aes_ctx *ctx = aes_ctx(desc->tfm);
        padlock_xcrypt_ecb(in, out, ctx->E, &ctx->cword.encrypt,
                           nbytes / AES_BLOCK_SIZE);
        return nbytes & ~(AES_BLOCK_SIZE - 1);
@@ -440,7 +442,7 @@ static unsigned int aes_encrypt_ecb(const struct cipher_desc *desc, u8 *out,
 static unsigned int aes_decrypt_ecb(const struct cipher_desc *desc, u8 *out,
                                    const u8 *in, unsigned int nbytes)
 {
-       struct aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(desc->tfm));
+       struct aes_ctx *ctx = aes_ctx(desc->tfm);
        padlock_xcrypt_ecb(in, out, ctx->D, &ctx->cword.decrypt,
                           nbytes / AES_BLOCK_SIZE);
        return nbytes & ~(AES_BLOCK_SIZE - 1);
@@ -449,7 +451,7 @@ static unsigned int aes_decrypt_ecb(const struct cipher_desc *desc, u8 *out,
 static unsigned int aes_encrypt_cbc(const struct cipher_desc *desc, u8 *out,
                                    const u8 *in, unsigned int nbytes)
 {
-       struct aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(desc->tfm));
+       struct aes_ctx *ctx = aes_ctx(desc->tfm);
        u8 *iv;
 
        iv = padlock_xcrypt_cbc(in, out, ctx->E, desc->info,
@@ -462,7 +464,7 @@ static unsigned int aes_encrypt_cbc(const struct cipher_desc *desc, u8 *out,
 static unsigned int aes_decrypt_cbc(const struct cipher_desc *desc, u8 *out,
                                    const u8 *in, unsigned int nbytes)
 {
-       struct aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(desc->tfm));
+       struct aes_ctx *ctx = aes_ctx(desc->tfm);
        padlock_xcrypt_cbc(in, out, ctx->D, desc->info, &ctx->cword.decrypt,
                           nbytes / AES_BLOCK_SIZE);
        return nbytes & ~(AES_BLOCK_SIZE - 1);