3 files changed, 87 insertions, 0 deletions
diff --git a/backport-include/crypto/aead.h b/backport-include/crypto/aead.h
new file mode 100644
index 0000000..26b1355
--- /dev/null
+++ b/backport-include/crypto/aead.h
@@ -0,0 +1,33 @@
+#ifndef __BACKPORT_CRYPTO_AEAD_H
+#define __BACKPORT_CRYPTO_AEAD_H
+#include_next <crypto/aead.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_IS_LESS(4,2,0)
+#define aead_request_set_ad LINUX_BACKPORT(aead_request_set_ad)
+static inline void aead_request_set_ad(struct aead_request *req,
+				       unsigned int assoclen)
+{
+	req->assoclen = assoclen;
+}
+
+#define crypto_aead_reqsize LINUX_BACKPORT(crypto_aead_reqsize)
+unsigned int crypto_aead_reqsize(struct crypto_aead *tfm);
+
+struct aead_request *crypto_backport_convert(struct aead_request *req);
+
+static inline int backport_crypto_aead_encrypt(struct aead_request *req)
+{
+	return crypto_aead_encrypt(crypto_backport_convert(req));
+}
+#define crypto_aead_encrypt LINUX_BACKPORT(crypto_aead_encrypt)
+
+static inline int backport_crypto_aead_decrypt(struct aead_request *req)
+{
+	return crypto_aead_decrypt(crypto_backport_convert(req));
+}
+#define crypto_aead_decrypt LINUX_BACKPORT(crypto_aead_decrypt)
+
+#endif /* LINUX_VERSION_IS_LESS(4,2,0) */
+
+#endif /* __BACKPORT_CRYPTO_AEAD_H */
diff --git a/backport-include/crypto/algapi.h b/backport-include/crypto/algapi.h
new file mode 100644
index 0000000..b6fbdd9
--- /dev/null
+++ b/backport-include/crypto/algapi.h
@@ -0,0 +1,16 @@
+#ifndef __BP_ALGAPI_H
+#define __BP_ALGAPI_H
+#include <linux/version.h>
+#include_next <crypto/algapi.h>
+
+#if LINUX_VERSION_IS_LESS(3,13,0)
+#define __crypto_memneq LINUX_BACKPORT(__crypto_memneq)
+noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size);
+#define crypto_memneq LINUX_BACKPORT(crypto_memneq)
+static inline int crypto_memneq(const void *a, const void *b, size_t size)
+{
+        return __crypto_memneq(a, b, size) != 0UL ? 1 : 0;
+}
+#endif
+
+#endif /* __BP_ALGAPI_H */
diff --git a/backport-include/crypto/hash.h b/backport-include/crypto/hash.h
new file mode 100644
index 0000000..96ae799
--- /dev/null
+++ b/backport-include/crypto/hash.h
@@ -0,0 +1,38 @@
+#ifndef _BACKPORT_CRYPTO_HASH_H
+#define _BACKPORT_CRYPTO_HASH_H
+#include_next <crypto/hash.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_IS_LESS(4,6,0)
+#define shash_desc_zero LINUX_BACKPORT(shash_desc_zero)
+static inline void shash_desc_zero(struct shash_desc *desc)
+{
+	memzero_explicit(desc,
+			 sizeof(*desc) + crypto_shash_descsize(desc->tfm));
+}
+#endif
+
+#if LINUX_VERSION_IS_LESS(4,6,0)
+#define ahash_request_zero LINUX_BACKPORT(ahash_request_zero)
+static inline void ahash_request_zero(struct ahash_request *req)
+{
+	memzero_explicit(req, sizeof(*req) +
+			      crypto_ahash_reqsize(crypto_ahash_reqtfm(req)));
+}
+#endif
+
+#ifndef AHASH_REQUEST_ON_STACK
+#define AHASH_REQUEST_ON_STACK(name, ahash) \
+	char __##name##_desc[sizeof(struct ahash_request) + \
+		crypto_ahash_reqsize(ahash)] CRYPTO_MINALIGN_ATTR; \
+	struct ahash_request *name = (void *)__##name##_desc
+#endif
+
+#ifndef SHASH_DESC_ON_STACK
+#define SHASH_DESC_ON_STACK(shash, ctx)				  \
+	char __##shash##_desc[sizeof(struct shash_desc) +	  \
+		crypto_shash_descsize(ctx)] CRYPTO_MINALIGN_ATTR; \
+	struct shash_desc *shash = (struct shash_desc *)__##shash##_desc
+#endif
+
+#endif /* _BACKPORT_CRYPTO_HASH_H */