These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 386 insertions, 0 deletions

diff --git a/kernel/include/crypto/akcipher.h b/kernel/include/crypto/akcipher.h
new file mode 100644
index 000000000..45cd5b328
--- /dev/null
+++ b/kernel/include/crypto/akcipher.h
@@ -0,0 +1,386 @@
+/*
+ * Public Key Encryption
+ *
+ * Copyright (c) 2015, Intel Corporation
+ * Authors: Tadeusz Struk <tadeusz.struk@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+#ifndef _CRYPTO_AKCIPHER_H
+#define _CRYPTO_AKCIPHER_H
+#include <linux/crypto.h>
+
+/**
+ * struct akcipher_request - public key request
+ *
+ * @base:	Common attributes for async crypto requests
+ * @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 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;
+	struct scatterlist *src;
+	struct scatterlist *dst;
+	unsigned int src_len;
+	unsigned int dst_len;
+	void *__ctx[] CRYPTO_MINALIGN_ATTR;
+};
+
+/**
+ * struct crypto_akcipher - user-instantiated objects which encapsulate
+ * algorithms and core processing logic
+ *
+ * @base:	Common crypto API algorithm data structure
+ */
+struct crypto_akcipher {
+	struct crypto_tfm base;
+};
+
+/**
+ * struct akcipher_alg - generic public key algorithm
+ *
+ * @sign:	Function performs a sign operation as defined by public key
+ *		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
+ * @verify:	Function performs a sign operation as defined by public key
+ *		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
+ * @encrypt:	Function performs an encrytp operation as defined by public key
+ *		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
+ * @decrypt:	Function performs a decrypt operation as defined by public key
+ *		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
+ * @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
+ *		the instantiation time, right after the transformation context
+ *		was allocated. In case the cryptographic hardware has some
+ *		special requirements which need to be handled by software, this
+ *		function shall check for the precise requirement of the
+ *		transformation and put any software fallbacks in place.
+ * @exit:	Deinitialize the cryptographic transformation object. This is a
+ *		counterpart to @init, used to remove various changes set in
+ *		@init.
+ *
+ * @reqsize:	Request context size required by algorithm implementation
+ * @base:	Common crypto API algorithm data structure
+ */
+struct akcipher_alg {
+	int (*sign)(struct akcipher_request *req);
+	int (*verify)(struct akcipher_request *req);
+	int (*encrypt)(struct akcipher_request *req);
+	int (*decrypt)(struct akcipher_request *req);
+	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);
+
+	unsigned int reqsize;
+	struct crypto_alg base;
+};
+
+/**
+ * DOC: Generic Public Key API
+ *
+ * The Public Key API is used with the algorithms of type
+ * CRYPTO_ALG_TYPE_AKCIPHER (listed as type "akcipher" in /proc/crypto)
+ */
+
+/**
+ * crypto_alloc_akcipher() -- allocate AKCIPHER tfm handle
+ * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
+ *	      public key algorithm e.g. "rsa"
+ * @type: specifies the type of the algorithm
+ * @mask: specifies the mask for the algorithm
+ *
+ * Allocate a handle for public key algorithm. The returned struct
+ * crypto_akcipher is the handle that is required for any subsequent
+ * API invocation for the public key operations.
+ *
+ * Return: allocated handle in case of success; IS_ERR() is true in case
+ *	   of an error, PTR_ERR() returns the error code.
+ */
+struct crypto_akcipher *crypto_alloc_akcipher(const char *alg_name, u32 type,
+					      u32 mask);
+
+static inline struct crypto_tfm *crypto_akcipher_tfm(
+	struct crypto_akcipher *tfm)
+{
+	return &tfm->base;
+}
+
+static inline struct akcipher_alg *__crypto_akcipher_alg(struct crypto_alg *alg)
+{
+	return container_of(alg, struct akcipher_alg, base);
+}
+
+static inline struct crypto_akcipher *__crypto_akcipher_tfm(
+	struct crypto_tfm *tfm)
+{
+	return container_of(tfm, struct crypto_akcipher, base);
+}
+
+static inline struct akcipher_alg *crypto_akcipher_alg(
+	struct crypto_akcipher *tfm)
+{
+	return __crypto_akcipher_alg(crypto_akcipher_tfm(tfm)->__crt_alg);
+}
+
+static inline unsigned int crypto_akcipher_reqsize(struct crypto_akcipher *tfm)
+{
+	return crypto_akcipher_alg(tfm)->reqsize;
+}
+
+static inline void akcipher_request_set_tfm(struct akcipher_request *req,
+					    struct crypto_akcipher *tfm)
+{
+	req->base.tfm = crypto_akcipher_tfm(tfm);
+}
+
+static inline struct crypto_akcipher *crypto_akcipher_reqtfm(
+	struct akcipher_request *req)
+{
+	return __crypto_akcipher_tfm(req->base.tfm);
+}
+
+/**
+ * crypto_free_akcipher() -- free AKCIPHER tfm handle
+ *
+ * @tfm: AKCIPHER tfm handle allocated with crypto_alloc_akcipher()
+ */
+static inline void crypto_free_akcipher(struct crypto_akcipher *tfm)
+{
+	crypto_destroy_tfm(tfm, crypto_akcipher_tfm(tfm));
+}
+
+/**
+ * akcipher_request_alloc() -- allocates public key request
+ *
+ * @tfm:	AKCIPHER tfm handle allocated with crypto_alloc_akcipher()
+ * @gfp:	allocation flags
+ *
+ * Return: allocated handle in case of success or NULL in case of an error.
+ */
+static inline struct akcipher_request *akcipher_request_alloc(
+	struct crypto_akcipher *tfm, gfp_t gfp)
+{
+	struct akcipher_request *req;
+
+	req = kmalloc(sizeof(*req) + crypto_akcipher_reqsize(tfm), gfp);
+	if (likely(req))
+		akcipher_request_set_tfm(req, tfm);
+
+	return req;
+}
+
+/**
+ * akcipher_request_free() -- zeroize and free public key request
+ *
+ * @req:	request to free
+ */
+static inline void akcipher_request_free(struct akcipher_request *req)
+{
+	kzfree(req);
+}
+
+/**
+ * akcipher_request_set_callback() -- Sets an asynchronous callback.
+ *
+ * Callback will be called when an asynchronous operation on a given
+ * request is finished.
+ *
+ * @req:	request that the callback will be set for
+ * @flgs:	specify for instance if the operation may backlog
+ * @cmlp:	callback which will be called
+ * @data:	private data used by the caller
+ */
+static inline void akcipher_request_set_callback(struct akcipher_request *req,
+						 u32 flgs,
+						 crypto_completion_t cmpl,
+						 void *data)
+{
+	req->base.complete = cmpl;
+	req->base.data = data;
+	req->base.flags = flgs;
+}
+
+/**
+ * akcipher_request_set_crypt() -- Sets reqest parameters
+ *
+ * Sets parameters required by crypto operation
+ *
+ * @req:	public key request
+ * @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,
+					      struct scatterlist *src,
+					      struct scatterlist *dst,
+					      unsigned int src_len,
+					      unsigned int dst_len)
+{
+	req->src = src;
+	req->dst = dst;
+	req->src_len = src_len;
+	req->dst_len = dst_len;
+}
+
+/**
+ * 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
+ * public key algorithm
+ *
+ * @req:	asymmetric key request
+ *
+ * Return: zero on success; error code in case of error
+ */
+static inline int crypto_akcipher_encrypt(struct akcipher_request *req)
+{
+	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
+
+	return alg->encrypt(req);
+}
+
+/**
+ * crypto_akcipher_decrypt() -- Invoke public key decrypt operation
+ *
+ * Function invokes the specific public key decrypt operation for a given
+ * public key algorithm
+ *
+ * @req:	asymmetric key request
+ *
+ * Return: zero on success; error code in case of error
+ */
+static inline int crypto_akcipher_decrypt(struct akcipher_request *req)
+{
+	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
+
+	return alg->decrypt(req);
+}
+
+/**
+ * crypto_akcipher_sign() -- Invoke public key sign operation
+ *
+ * Function invokes the specific public key sign operation for a given
+ * public key algorithm
+ *
+ * @req:	asymmetric key request
+ *
+ * Return: zero on success; error code in case of error
+ */
+static inline int crypto_akcipher_sign(struct akcipher_request *req)
+{
+	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
+
+	return alg->sign(req);
+}
+
+/**
+ * crypto_akcipher_verify() -- Invoke public key verify operation
+ *
+ * Function invokes the specific public key verify operation for a given
+ * public key algorithm
+ *
+ * @req:	asymmetric key request
+ *
+ * Return: zero on success; error code in case of error
+ */
+static inline int crypto_akcipher_verify(struct akcipher_request *req)
+{
+	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
+
+	return alg->verify(req);
+}
+
+/**
+ * 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 key
+ * @keylen:	length of the key
+ *
+ * Return: zero on success; error code in case of error
+ */
+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->set_priv_key(tfm, key, keylen);
+}
+#endif