Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 124 insertions, 0 deletions

diff --git a/arch/x86/crypto/cast6_avx_glue.c b/arch/x86/crypto/cast6_avx_glue.c
new file mode 100644
index 000000000..7e2aea372
--- /dev/null
+++ b/arch/x86/crypto/cast6_avx_glue.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Glue Code for the AVX assembler implementation of the Cast6 Cipher
+ *
+ * Copyright (C) 2012 Johannes Goetzfried
+ *     <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
+ *
+ * Copyright © 2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/crypto.h>
+#include <linux/err.h>
+#include <crypto/algapi.h>
+#include <crypto/cast6.h>
+#include <crypto/internal/simd.h>
+
+#include "ecb_cbc_helpers.h"
+
+#define CAST6_PARALLEL_BLOCKS 8
+
+asmlinkage void cast6_ecb_enc_8way(const void *ctx, u8 *dst, const u8 *src);
+asmlinkage void cast6_ecb_dec_8way(const void *ctx, u8 *dst, const u8 *src);
+
+asmlinkage void cast6_cbc_dec_8way(const void *ctx, u8 *dst, const u8 *src);
+
+static int cast6_setkey_skcipher(struct crypto_skcipher *tfm,
+				 const u8 *key, unsigned int keylen)
+{
+	return cast6_setkey(&tfm->base, key, keylen);
+}
+
+static int ecb_encrypt(struct skcipher_request *req)
+{
+	ECB_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
+	ECB_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_ecb_enc_8way);
+	ECB_BLOCK(1, __cast6_encrypt);
+	ECB_WALK_END();
+}
+
+static int ecb_decrypt(struct skcipher_request *req)
+{
+	ECB_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
+	ECB_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_ecb_dec_8way);
+	ECB_BLOCK(1, __cast6_decrypt);
+	ECB_WALK_END();
+}
+
+static int cbc_encrypt(struct skcipher_request *req)
+{
+	CBC_WALK_START(req, CAST6_BLOCK_SIZE, -1);
+	CBC_ENC_BLOCK(__cast6_encrypt);
+	CBC_WALK_END();
+}
+
+static int cbc_decrypt(struct skcipher_request *req)
+{
+	CBC_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
+	CBC_DEC_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_cbc_dec_8way);
+	CBC_DEC_BLOCK(1, __cast6_decrypt);
+	CBC_WALK_END();
+}
+
+static struct skcipher_alg cast6_algs[] = {
+	{
+		.base.cra_name		= "__ecb(cast6)",
+		.base.cra_driver_name	= "__ecb-cast6-avx",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_INTERNAL,
+		.base.cra_blocksize	= CAST6_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct cast6_ctx),
+		.base.cra_module	= THIS_MODULE,
+		.min_keysize		= CAST6_MIN_KEY_SIZE,
+		.max_keysize		= CAST6_MAX_KEY_SIZE,
+		.setkey			= cast6_setkey_skcipher,
+		.encrypt		= ecb_encrypt,
+		.decrypt		= ecb_decrypt,
+	}, {
+		.base.cra_name		= "__cbc(cast6)",
+		.base.cra_driver_name	= "__cbc-cast6-avx",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_INTERNAL,
+		.base.cra_blocksize	= CAST6_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct cast6_ctx),
+		.base.cra_module	= THIS_MODULE,
+		.min_keysize		= CAST6_MIN_KEY_SIZE,
+		.max_keysize		= CAST6_MAX_KEY_SIZE,
+		.ivsize			= CAST6_BLOCK_SIZE,
+		.setkey			= cast6_setkey_skcipher,
+		.encrypt		= cbc_encrypt,
+		.decrypt		= cbc_decrypt,
+	},
+};
+
+static struct simd_skcipher_alg *cast6_simd_algs[ARRAY_SIZE(cast6_algs)];
+
+static int __init cast6_init(void)
+{
+	const char *feature_name;
+
+	if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM,
+				&feature_name)) {
+		pr_info("CPU feature '%s' is not supported.\n", feature_name);
+		return -ENODEV;
+	}
+
+	return simd_register_skciphers_compat(cast6_algs,
+					      ARRAY_SIZE(cast6_algs),
+					      cast6_simd_algs);
+}
+
+static void __exit cast6_exit(void)
+{
+	simd_unregister_skciphers(cast6_algs, ARRAY_SIZE(cast6_algs),
+				  cast6_simd_algs);
+}
+
+module_init(cast6_init);
+module_exit(cast6_exit);
+
+MODULE_DESCRIPTION("Cast6 Cipher Algorithm, AVX optimized");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CRYPTO("cast6");