Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto update from Herbert Xu:
 "API:

   - Add support for cipher output IVs in testmgr
   - Add missing crypto_ahash_blocksize helper
   - Mark authenc and des ciphers as not allowed under FIPS.

Algorithms:

   - Add CRC support to 842 compression
   - Add keywrap algorithm
   - A number of changes to the akcipher interface:
      + Separate functions for setting public/private keys.
      + Use SG lists.

Drivers:

   - Add Intel SHA Extension optimised SHA1 and SHA256
   - Use dma_map_sg instead of custom functions in crypto drivers
   - Add support for STM32 RNG
   - Add support for ST RNG
   - Add Device Tree support to exynos RNG driver
   - Add support for mxs-dcp crypto device on MX6SL
   - Add xts(aes) support to caam
   - Add ctr(aes) and xts(aes) support to qat
   - A large set of fixes from Russell King for the marvell/cesa driver"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (115 commits)
  crypto: asymmetric_keys - Fix unaligned access in x509_get_sig_params()
  crypto: akcipher - Don't #include crypto/public_key.h as the contents aren't used
  hwrng: exynos - Add Device Tree support
  hwrng: exynos - Fix missing configuration after suspend to RAM
  hwrng: exynos - Add timeout for waiting on init done
  dt-bindings: rng: Describe Exynos4 PRNG bindings
  crypto: marvell/cesa - use __le32 for hardware descriptors
  crypto: marvell/cesa - fix missing cpu_to_le32() in mv_cesa_dma_add_op()
  crypto: marvell/cesa - use memcpy_fromio()/memcpy_toio()
  crypto: marvell/cesa - use gfp_t for gfp flags
  crypto: marvell/cesa - use dma_addr_t for cur_dma
  crypto: marvell/cesa - use readl_relaxed()/writel_relaxed()
  crypto: caam - fix indentation of close braces
  crypto: caam - only export the state we really need to export
  crypto: caam - fix non-block aligned hash calculation
  crypto: caam - avoid needlessly saving and restoring caam_hash_ctx
  crypto: caam - print errno code when hash registration fails
  crypto: marvell/cesa - fix memory leak
  crypto: marvell/cesa - fix first-fragment handling in mv_cesa_ahash_dma_last_req()
  crypto: marvell/cesa - rearrange handling for sw padded hashes
  ...

1 files changed, 68 insertions, 22 deletions

diff --git a/include/crypto/akcipher.h b/include/crypto/akcipher.h
index 69d163e..45cd5b3 100644
--- a/include/crypto/akcipher.h
+++ b/include/crypto/akcipher.h
@@ -18,21 +18,21 @@
  * struct akcipher_request - public key request
  *
  * @base:	Common attributes for async crypto requests
- * @src:	Pointer to memory containing the input parameters
- *		The format of the parameter(s) is expeted to be Octet String
- * @dst:	Pointer to memory whare the result will be stored
- * @src_len:	Size of the input parameter
+ * @src:	Source data
+ * @dst:	Destination data
+ * @src_len:	Size of the input buffer
  * @dst_len:	Size of the output buffer. It needs to be at leaset
  *		as big as the expected result depending	on the operation
  *		After operation it will be updated with the acctual size of the
- *		result. In case of error, where the dst_len was insufficient,
+ *		result.
+ *		In case of error where the dst sgl size was insufficient,
  *		it will be updated to the size required for the operation.
  * @__ctx:	Start of private context data
  */
 struct akcipher_request {
 	struct crypto_async_request base;
-	void *src;
-	void *dst;
+	struct scatterlist *src;
+	struct scatterlist *dst;
 	unsigned int src_len;
 	unsigned int dst_len;
 	void *__ctx[] CRYPTO_MINALIGN_ATTR;
@@ -67,8 +67,13 @@ struct crypto_akcipher {
  *		algorithm. In case of error, where the dst_len was insufficient,
  *		the req->dst_len will be updated to the size required for the
  *		operation
- * @setkey:	Function invokes the algorithm specific set key function, which
- *		knows how to decode and interpret the BER encoded key
+ * @set_pub_key: Function invokes the algorithm specific set public key
+ *		function, which knows how to decode and interpret
+ *		the BER encoded public key
+ * @set_priv_key: Function invokes the algorithm specific set private key
+ *		function, which knows how to decode and interpret
+ *		the BER encoded private key
+ * @max_size:	Function returns dest buffer size reqired for a given key.
  * @init:	Initialize the cryptographic transformation object.
  *		This function is used to initialize the cryptographic
  *		transformation object. This function is called only once at
@@ -89,8 +94,11 @@ struct akcipher_alg {
 	int (*verify)(struct akcipher_request *req);
 	int (*encrypt)(struct akcipher_request *req);
 	int (*decrypt)(struct akcipher_request *req);
-	int (*setkey)(struct crypto_akcipher *tfm, const void *key,
-		      unsigned int keylen);
+	int (*set_pub_key)(struct crypto_akcipher *tfm, const void *key,
+			   unsigned int keylen);
+	int (*set_priv_key)(struct crypto_akcipher *tfm, const void *key,
+			    unsigned int keylen);
+	int (*max_size)(struct crypto_akcipher *tfm);
 	int (*init)(struct crypto_akcipher *tfm);
 	void (*exit)(struct crypto_akcipher *tfm);
 
@@ -229,14 +237,14 @@ static inline void akcipher_request_set_callback(struct akcipher_request *req,
  * Sets parameters required by crypto operation
  *
  * @req:	public key request
- * @src:	ptr to input parameter
- * @dst:	ptr of output parameter
- * @src_len:	size of the input buffer
- * @dst_len:	size of the output buffer. It will be updated by the
- *		implementation to reflect the acctual size of the result
+ * @src:	ptr to input scatter list
+ * @dst:	ptr to output scatter list
+ * @src_len:	size of the src input scatter list to be processed
+ * @dst_len:	size of the dst output scatter list
  */
 static inline void akcipher_request_set_crypt(struct akcipher_request *req,
-					      void *src, void *dst,
+					      struct scatterlist *src,
+					      struct scatterlist *dst,
 					      unsigned int src_len,
 					      unsigned int dst_len)
 {
@@ -247,6 +255,22 @@ static inline void akcipher_request_set_crypt(struct akcipher_request *req,
 }
 
 /**
+ * crypto_akcipher_maxsize() -- Get len for output buffer
+ *
+ * Function returns the dest buffer size required for a given key
+ *
+ * @tfm:	AKCIPHER tfm handle allocated with crypto_alloc_akcipher()
+ *
+ * Return: minimum len for output buffer or error code in key hasn't been set
+ */
+static inline int crypto_akcipher_maxsize(struct crypto_akcipher *tfm)
+{
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
+
+	return alg->max_size(tfm);
+}
+
+/**
  * crypto_akcipher_encrypt() -- Invoke public key encrypt operation
  *
  * Function invokes the specific public key encrypt operation for a given
@@ -319,22 +343,44 @@ static inline int crypto_akcipher_verify(struct akcipher_request *req)
 }
 
 /**
- * crypto_akcipher_setkey() -- Invoke public key setkey operation
+ * crypto_akcipher_set_pub_key() -- Invoke set public key operation
+ *
+ * Function invokes the algorithm specific set key function, which knows
+ * how to decode and interpret the encoded key
+ *
+ * @tfm:	tfm handle
+ * @key:	BER encoded public key
+ * @keylen:	length of the key
+ *
+ * Return: zero on success; error code in case of error
+ */
+static inline int crypto_akcipher_set_pub_key(struct crypto_akcipher *tfm,
+					      const void *key,
+					      unsigned int keylen)
+{
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
+
+	return alg->set_pub_key(tfm, key, keylen);
+}
+
+/**
+ * crypto_akcipher_set_priv_key() -- Invoke set private key operation
  *
  * Function invokes the algorithm specific set key function, which knows
  * how to decode and interpret the encoded key
  *
  * @tfm:	tfm handle
- * @key:	BER encoded private or public key
+ * @key:	BER encoded private key
  * @keylen:	length of the key
  *
  * Return: zero on success; error code in case of error
  */
-static inline int crypto_akcipher_setkey(struct crypto_akcipher *tfm, void *key,
-					 unsigned int keylen)
+static inline int crypto_akcipher_set_priv_key(struct crypto_akcipher *tfm,
+					       const void *key,
+					       unsigned int keylen)
 {
 	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
 
-	return alg->setkey(tfm, key, keylen);
+	return alg->set_priv_key(tfm, key, keylen);
 }
 #endif