[CRYPTO] api: Mark parts of cipher interface as deprecated

Mark the parts of the cipher interface that have been replaced by
block ciphers as deprecated.  Thanks to Andrew Morton for suggesting
doing this before removing them completely.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 28 insertions, 6 deletions

diff --git a/crypto/cipher.c b/crypto/cipher.c
index 326461780673..9e03701cfdcc 100644
--- a/crypto/cipher.c
+++ b/crypto/cipher.c
@@ -23,6 +23,28 @@
 #include "internal.h"
 #include "scatterwalk.h"
 
+struct cipher_alg_compat {
+        unsigned int cia_min_keysize;
+        unsigned int cia_max_keysize;
+        int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
+                          unsigned int keylen);
+        void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
+        void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
+
+        unsigned int (*cia_encrypt_ecb)(const struct cipher_desc *desc,
+                                        u8 *dst, const u8 *src,
+                                        unsigned int nbytes);
+        unsigned int (*cia_decrypt_ecb)(const struct cipher_desc *desc,
+                                        u8 *dst, const u8 *src,
+                                        unsigned int nbytes);
+        unsigned int (*cia_encrypt_cbc)(const struct cipher_desc *desc,
+                                        u8 *dst, const u8 *src,
+                                        unsigned int nbytes);
+        unsigned int (*cia_decrypt_cbc)(const struct cipher_desc *desc,
+                                        u8 *dst, const u8 *src,
+                                        unsigned int nbytes);
+};
+
 static inline void xor_64(u8 *a, const u8 *b)
 {
         ((u32 *)a)[0] ^= ((u32 *)b)[0];
@@ -276,7 +298,7 @@ static int ecb_encrypt(struct crypto_tfm *tfm,
                        struct scatterlist *src, unsigned int nbytes)
 {
         struct cipher_desc desc;
-        struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher;
+        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
 
         desc.tfm = tfm;
         desc.crfn = cipher->cia_encrypt;
@@ -291,7 +313,7 @@ static int ecb_decrypt(struct crypto_tfm *tfm,
                        unsigned int nbytes)
 {
         struct cipher_desc desc;
-        struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher;
+        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
 
         desc.tfm = tfm;
         desc.crfn = cipher->cia_decrypt;
@@ -306,7 +328,7 @@ static int cbc_encrypt(struct crypto_tfm *tfm,
                        unsigned int nbytes)
 {
         struct cipher_desc desc;
-        struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher;
+        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
 
         desc.tfm = tfm;
         desc.crfn = cipher->cia_encrypt;
@@ -322,7 +344,7 @@ static int cbc_encrypt_iv(struct crypto_tfm *tfm,
                           unsigned int nbytes, u8 *iv)
 {
         struct cipher_desc desc;
-        struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher;
+        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
 
         desc.tfm = tfm;
         desc.crfn = cipher->cia_encrypt;
@@ -338,7 +360,7 @@ static int cbc_decrypt(struct crypto_tfm *tfm,
                        unsigned int nbytes)
 {
         struct cipher_desc desc;
-        struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher;
+        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
 
         desc.tfm = tfm;
         desc.crfn = cipher->cia_decrypt;
@@ -354,7 +376,7 @@ static int cbc_decrypt_iv(struct crypto_tfm *tfm,
                           unsigned int nbytes, u8 *iv)
 {
         struct cipher_desc desc;
-        struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher;
+        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
 
         desc.tfm = tfm;
         desc.crfn = cipher->cia_decrypt;