Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 133 insertions, 0 deletions

diff --git a/arch/x86/crypto/twofish_avx_glue.c b/arch/x86/crypto/twofish_avx_glue.c
new file mode 100644
index 000000000..3eb3440b4
--- /dev/null
+++ b/arch/x86/crypto/twofish_avx_glue.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Glue Code for AVX assembler version of Twofish 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/internal/simd.h>
+#include <crypto/twofish.h>
+
+#include "twofish.h"
+#include "ecb_cbc_helpers.h"
+
+#define TWOFISH_PARALLEL_BLOCKS 8
+
+/* 8-way parallel cipher functions */
+asmlinkage void twofish_ecb_enc_8way(const void *ctx, u8 *dst, const u8 *src);
+asmlinkage void twofish_ecb_dec_8way(const void *ctx, u8 *dst, const u8 *src);
+
+asmlinkage void twofish_cbc_dec_8way(const void *ctx, u8 *dst, const u8 *src);
+
+static int twofish_setkey_skcipher(struct crypto_skcipher *tfm,
+				   const u8 *key, unsigned int keylen)
+{
+	return twofish_setkey(&tfm->base, key, keylen);
+}
+
+static inline void twofish_enc_blk_3way(const void *ctx, u8 *dst, const u8 *src)
+{
+	__twofish_enc_blk_3way(ctx, dst, src, false);
+}
+
+static int ecb_encrypt(struct skcipher_request *req)
+{
+	ECB_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+	ECB_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_ecb_enc_8way);
+	ECB_BLOCK(3, twofish_enc_blk_3way);
+	ECB_BLOCK(1, twofish_enc_blk);
+	ECB_WALK_END();
+}
+
+static int ecb_decrypt(struct skcipher_request *req)
+{
+	ECB_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+	ECB_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_ecb_dec_8way);
+	ECB_BLOCK(3, twofish_dec_blk_3way);
+	ECB_BLOCK(1, twofish_dec_blk);
+	ECB_WALK_END();
+}
+
+static int cbc_encrypt(struct skcipher_request *req)
+{
+	CBC_WALK_START(req, TF_BLOCK_SIZE, -1);
+	CBC_ENC_BLOCK(twofish_enc_blk);
+	CBC_WALK_END();
+}
+
+static int cbc_decrypt(struct skcipher_request *req)
+{
+	CBC_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+	CBC_DEC_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_cbc_dec_8way);
+	CBC_DEC_BLOCK(3, twofish_dec_blk_cbc_3way);
+	CBC_DEC_BLOCK(1, twofish_dec_blk);
+	CBC_WALK_END();
+}
+
+static struct skcipher_alg twofish_algs[] = {
+	{
+		.base.cra_name		= "__ecb(twofish)",
+		.base.cra_driver_name	= "__ecb-twofish-avx",
+		.base.cra_priority	= 400,
+		.base.cra_flags		= CRYPTO_ALG_INTERNAL,
+		.base.cra_blocksize	= TF_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct twofish_ctx),
+		.base.cra_module	= THIS_MODULE,
+		.min_keysize		= TF_MIN_KEY_SIZE,
+		.max_keysize		= TF_MAX_KEY_SIZE,
+		.setkey			= twofish_setkey_skcipher,
+		.encrypt		= ecb_encrypt,
+		.decrypt		= ecb_decrypt,
+	}, {
+		.base.cra_name		= "__cbc(twofish)",
+		.base.cra_driver_name	= "__cbc-twofish-avx",
+		.base.cra_priority	= 400,
+		.base.cra_flags		= CRYPTO_ALG_INTERNAL,
+		.base.cra_blocksize	= TF_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct twofish_ctx),
+		.base.cra_module	= THIS_MODULE,
+		.min_keysize		= TF_MIN_KEY_SIZE,
+		.max_keysize		= TF_MAX_KEY_SIZE,
+		.ivsize			= TF_BLOCK_SIZE,
+		.setkey			= twofish_setkey_skcipher,
+		.encrypt		= cbc_encrypt,
+		.decrypt		= cbc_decrypt,
+	},
+};
+
+static struct simd_skcipher_alg *twofish_simd_algs[ARRAY_SIZE(twofish_algs)];
+
+static int __init twofish_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(twofish_algs,
+					      ARRAY_SIZE(twofish_algs),
+					      twofish_simd_algs);
+}
+
+static void __exit twofish_exit(void)
+{
+	simd_unregister_skciphers(twofish_algs, ARRAY_SIZE(twofish_algs),
+				  twofish_simd_algs);
+}
+
+module_init(twofish_init);
+module_exit(twofish_exit);
+
+MODULE_DESCRIPTION("Twofish Cipher Algorithm, AVX optimized");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CRYPTO("twofish");