crypto: chacha - remove <crypto/internal/chacha.h>

<crypto/internal/chacha.h> is now included only by crypto/chacha.c, so
fold it into there.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 34 insertions, 1 deletions

diff --git a/crypto/chacha.c b/crypto/chacha.c
index 2009038c5e56..5103bc0b2881 100644
--- a/crypto/chacha.c
+++ b/crypto/chacha.c
@@ -8,10 +8,43 @@
 
 #include <linux/unaligned.h>
 #include <crypto/algapi.h>
-#include <crypto/internal/chacha.h>
+#include <crypto/chacha.h>
 #include <crypto/internal/skcipher.h>
 #include <linux/module.h>
 
+struct chacha_ctx {
+	u32 key[8];
+	int nrounds;
+};
+
+static int chacha_setkey(struct crypto_skcipher *tfm,
+			 const u8 *key, unsigned int keysize, int nrounds)
+{
+	struct chacha_ctx *ctx = crypto_skcipher_ctx(tfm);
+	int i;
+
+	if (keysize != CHACHA_KEY_SIZE)
+		return -EINVAL;
+
+	for (i = 0; i < ARRAY_SIZE(ctx->key); i++)
+		ctx->key[i] = get_unaligned_le32(key + i * sizeof(u32));
+
+	ctx->nrounds = nrounds;
+	return 0;
+}
+
+static int chacha20_setkey(struct crypto_skcipher *tfm,
+			   const u8 *key, unsigned int keysize)
+{
+	return chacha_setkey(tfm, key, keysize, 20);
+}
+
+static int chacha12_setkey(struct crypto_skcipher *tfm,
+			   const u8 *key, unsigned int keysize)
+{
+	return chacha_setkey(tfm, key, keysize, 12);
+}
+
 static int chacha_stream_xor(struct skcipher_request *req,
 			     const struct chacha_ctx *ctx, const u8 *iv,
 			     bool arch)