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-rw-r--r--arch/x86/crypto/blowfish_avx2_glue.c585
1 files changed, 0 insertions, 585 deletions
diff --git a/arch/x86/crypto/blowfish_avx2_glue.c b/arch/x86/crypto/blowfish_avx2_glue.c
deleted file mode 100644
index 4417e9aea78d..000000000000
--- a/arch/x86/crypto/blowfish_avx2_glue.c
+++ /dev/null
@@ -1,585 +0,0 @@
-/*
- * Glue Code for x86_64/AVX2 assembler optimized version of Blowfish
- *
- * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
- *
- * CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by:
- * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
- * CTR part based on code (crypto/ctr.c) by:
- * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/crypto.h>
-#include <linux/err.h>
-#include <crypto/algapi.h>
-#include <crypto/blowfish.h>
-#include <crypto/cryptd.h>
-#include <crypto/ctr.h>
-#include <asm/i387.h>
-#include <asm/xcr.h>
-#include <asm/xsave.h>
-#include <asm/crypto/blowfish.h>
-#include <asm/crypto/ablk_helper.h>
-#include <crypto/scatterwalk.h>
-
-#define BF_AVX2_PARALLEL_BLOCKS 32
-
-/* 32-way AVX2 parallel cipher functions */
-asmlinkage void blowfish_ecb_enc_32way(struct bf_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void blowfish_ecb_dec_32way(struct bf_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void blowfish_cbc_dec_32way(struct bf_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void blowfish_ctr_32way(struct bf_ctx *ctx, u8 *dst, const u8 *src,
- __be64 *iv);
-
-static inline bool bf_fpu_begin(bool fpu_enabled, unsigned int nbytes)
-{
- if (fpu_enabled)
- return true;
-
- /* FPU is only used when chunk to be processed is large enough, so
- * do not enable FPU until it is necessary.
- */
- if (nbytes < BF_BLOCK_SIZE * BF_AVX2_PARALLEL_BLOCKS)
- return false;
-
- kernel_fpu_begin();
- return true;
-}
-
-static inline void bf_fpu_end(bool fpu_enabled)
-{
- if (fpu_enabled)
- kernel_fpu_end();
-}
-
-static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk,
- bool enc)
-{
- bool fpu_enabled = false;
- struct bf_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = BF_BLOCK_SIZE;
- unsigned int nbytes;
- int err;
-
- err = blkcipher_walk_virt(desc, walk);
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
-
- while ((nbytes = walk->nbytes)) {
- u8 *wsrc = walk->src.virt.addr;
- u8 *wdst = walk->dst.virt.addr;
-
- fpu_enabled = bf_fpu_begin(fpu_enabled, nbytes);
-
- /* Process multi-block AVX2 batch */
- if (nbytes >= bsize * BF_AVX2_PARALLEL_BLOCKS) {
- do {
- if (enc)
- blowfish_ecb_enc_32way(ctx, wdst, wsrc);
- else
- blowfish_ecb_dec_32way(ctx, wdst, wsrc);
-
- wsrc += bsize * BF_AVX2_PARALLEL_BLOCKS;
- wdst += bsize * BF_AVX2_PARALLEL_BLOCKS;
- nbytes -= bsize * BF_AVX2_PARALLEL_BLOCKS;
- } while (nbytes >= bsize * BF_AVX2_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Process multi-block batch */
- if (nbytes >= bsize * BF_PARALLEL_BLOCKS) {
- do {
- if (enc)
- blowfish_enc_blk_4way(ctx, wdst, wsrc);
- else
- blowfish_dec_blk_4way(ctx, wdst, wsrc);
-
- wsrc += bsize * BF_PARALLEL_BLOCKS;
- wdst += bsize * BF_PARALLEL_BLOCKS;
- nbytes -= bsize * BF_PARALLEL_BLOCKS;
- } while (nbytes >= bsize * BF_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- do {
- if (enc)
- blowfish_enc_blk(ctx, wdst, wsrc);
- else
- blowfish_dec_blk(ctx, wdst, wsrc);
-
- wsrc += bsize;
- wdst += bsize;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
-done:
- err = blkcipher_walk_done(desc, walk, nbytes);
- }
-
- bf_fpu_end(fpu_enabled);
- return err;
-}
-
-static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct blkcipher_walk walk;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- return ecb_crypt(desc, &walk, true);
-}
-
-static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct blkcipher_walk walk;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- return ecb_crypt(desc, &walk, false);
-}
-
-static unsigned int __cbc_encrypt(struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- struct bf_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- unsigned int bsize = BF_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- u64 *src = (u64 *)walk->src.virt.addr;
- u64 *dst = (u64 *)walk->dst.virt.addr;
- u64 *iv = (u64 *)walk->iv;
-
- do {
- *dst = *src ^ *iv;
- blowfish_enc_blk(ctx, (u8 *)dst, (u8 *)dst);
- iv = dst;
-
- src += 1;
- dst += 1;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
- *(u64 *)walk->iv = *iv;
- return nbytes;
-}
-
-static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt(desc, &walk);
-
- while ((nbytes = walk.nbytes)) {
- nbytes = __cbc_encrypt(desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-static unsigned int __cbc_decrypt(struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- struct bf_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = BF_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- u64 *src = (u64 *)walk->src.virt.addr;
- u64 *dst = (u64 *)walk->dst.virt.addr;
- u64 last_iv;
- int i;
-
- /* Start of the last block. */
- src += nbytes / bsize - 1;
- dst += nbytes / bsize - 1;
-
- last_iv = *src;
-
- /* Process multi-block AVX2 batch */
- if (nbytes >= bsize * BF_AVX2_PARALLEL_BLOCKS) {
- do {
- nbytes -= bsize * (BF_AVX2_PARALLEL_BLOCKS - 1);
- src -= BF_AVX2_PARALLEL_BLOCKS - 1;
- dst -= BF_AVX2_PARALLEL_BLOCKS - 1;
-
- blowfish_cbc_dec_32way(ctx, (u8 *)dst, (u8 *)src);
-
- nbytes -= bsize;
- if (nbytes < bsize)
- goto done;
-
- *dst ^= *(src - 1);
- src -= 1;
- dst -= 1;
- } while (nbytes >= bsize * BF_AVX2_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Process multi-block batch */
- if (nbytes >= bsize * BF_PARALLEL_BLOCKS) {
- u64 ivs[BF_PARALLEL_BLOCKS - 1];
-
- do {
- nbytes -= bsize * (BF_PARALLEL_BLOCKS - 1);
- src -= BF_PARALLEL_BLOCKS - 1;
- dst -= BF_PARALLEL_BLOCKS - 1;
-
- for (i = 0; i < BF_PARALLEL_BLOCKS - 1; i++)
- ivs[i] = src[i];
-
- blowfish_dec_blk_4way(ctx, (u8 *)dst, (u8 *)src);
-
- for (i = 0; i < BF_PARALLEL_BLOCKS - 1; i++)
- dst[i + 1] ^= ivs[i];
-
- nbytes -= bsize;
- if (nbytes < bsize)
- goto done;
-
- *dst ^= *(src - 1);
- src -= 1;
- dst -= 1;
- } while (nbytes >= bsize * BF_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- for (;;) {
- blowfish_dec_blk(ctx, (u8 *)dst, (u8 *)src);
-
- nbytes -= bsize;
- if (nbytes < bsize)
- break;
-
- *dst ^= *(src - 1);
- src -= 1;
- dst -= 1;
- }
-
-done:
- *dst ^= *(u64 *)walk->iv;
- *(u64 *)walk->iv = last_iv;
-
- return nbytes;
-}
-
-static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- bool fpu_enabled = false;
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt(desc, &walk);
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
-
- while ((nbytes = walk.nbytes)) {
- fpu_enabled = bf_fpu_begin(fpu_enabled, nbytes);
- nbytes = __cbc_decrypt(desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- bf_fpu_end(fpu_enabled);
- return err;
-}
-
-static void ctr_crypt_final(struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- struct bf_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- u8 *ctrblk = walk->iv;
- u8 keystream[BF_BLOCK_SIZE];
- u8 *src = walk->src.virt.addr;
- u8 *dst = walk->dst.virt.addr;
- unsigned int nbytes = walk->nbytes;
-
- blowfish_enc_blk(ctx, keystream, ctrblk);
- crypto_xor(keystream, src, nbytes);
- memcpy(dst, keystream, nbytes);
-
- crypto_inc(ctrblk, BF_BLOCK_SIZE);
-}
-
-static unsigned int __ctr_crypt(struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- struct bf_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- unsigned int bsize = BF_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- u64 *src = (u64 *)walk->src.virt.addr;
- u64 *dst = (u64 *)walk->dst.virt.addr;
- int i;
-
- /* Process multi-block AVX2 batch */
- if (nbytes >= bsize * BF_AVX2_PARALLEL_BLOCKS) {
- do {
- blowfish_ctr_32way(ctx, (u8 *)dst, (u8 *)src,
- (__be64 *)walk->iv);
-
- src += BF_AVX2_PARALLEL_BLOCKS;
- dst += BF_AVX2_PARALLEL_BLOCKS;
- nbytes -= bsize * BF_AVX2_PARALLEL_BLOCKS;
- } while (nbytes >= bsize * BF_AVX2_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Process four block batch */
- if (nbytes >= bsize * BF_PARALLEL_BLOCKS) {
- __be64 ctrblocks[BF_PARALLEL_BLOCKS];
- u64 ctrblk = be64_to_cpu(*(__be64 *)walk->iv);
-
- do {
- /* create ctrblks for parallel encrypt */
- for (i = 0; i < BF_PARALLEL_BLOCKS; i++) {
- if (dst != src)
- dst[i] = src[i];
-
- ctrblocks[i] = cpu_to_be64(ctrblk++);
- }
-
- blowfish_enc_blk_xor_4way(ctx, (u8 *)dst,
- (u8 *)ctrblocks);
-
- src += BF_PARALLEL_BLOCKS;
- dst += BF_PARALLEL_BLOCKS;
- nbytes -= bsize * BF_PARALLEL_BLOCKS;
- } while (nbytes >= bsize * BF_PARALLEL_BLOCKS);
-
- *(__be64 *)walk->iv = cpu_to_be64(ctrblk);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- do {
- u64 ctrblk;
-
- if (dst != src)
- *dst = *src;
-
- ctrblk = *(u64 *)walk->iv;
- be64_add_cpu((__be64 *)walk->iv, 1);
-
- blowfish_enc_blk_xor(ctx, (u8 *)dst, (u8 *)&ctrblk);
-
- src += 1;
- dst += 1;
- } while ((nbytes -= bsize) >= bsize);
-
-done:
- return nbytes;
-}
-
-static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- bool fpu_enabled = false;
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt_block(desc, &walk, BF_BLOCK_SIZE);
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
-
- while ((nbytes = walk.nbytes) >= BF_BLOCK_SIZE) {
- fpu_enabled = bf_fpu_begin(fpu_enabled, nbytes);
- nbytes = __ctr_crypt(desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- bf_fpu_end(fpu_enabled);
-
- if (walk.nbytes) {
- ctr_crypt_final(desc, &walk);
- err = blkcipher_walk_done(desc, &walk, 0);
- }
-
- return err;
-}
-
-static struct crypto_alg bf_algs[6] = { {
- .cra_name = "__ecb-blowfish-avx2",
- .cra_driver_name = "__driver-ecb-blowfish-avx2",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
- .cra_blocksize = BF_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct bf_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = BF_MIN_KEY_SIZE,
- .max_keysize = BF_MAX_KEY_SIZE,
- .setkey = blowfish_setkey,
- .encrypt = ecb_encrypt,
- .decrypt = ecb_decrypt,
- },
- },
-}, {
- .cra_name = "__cbc-blowfish-avx2",
- .cra_driver_name = "__driver-cbc-blowfish-avx2",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
- .cra_blocksize = BF_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct bf_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = BF_MIN_KEY_SIZE,
- .max_keysize = BF_MAX_KEY_SIZE,
- .setkey = blowfish_setkey,
- .encrypt = cbc_encrypt,
- .decrypt = cbc_decrypt,
- },
- },
-}, {
- .cra_name = "__ctr-blowfish-avx2",
- .cra_driver_name = "__driver-ctr-blowfish-avx2",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct bf_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = BF_MIN_KEY_SIZE,
- .max_keysize = BF_MAX_KEY_SIZE,
- .ivsize = BF_BLOCK_SIZE,
- .setkey = blowfish_setkey,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
- },
- },
-}, {
- .cra_name = "ecb(blowfish)",
- .cra_driver_name = "ecb-blowfish-avx2",
- .cra_priority = 400,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = BF_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = BF_MIN_KEY_SIZE,
- .max_keysize = BF_MAX_KEY_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
- },
-}, {
- .cra_name = "cbc(blowfish)",
- .cra_driver_name = "cbc-blowfish-avx2",
- .cra_priority = 400,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = BF_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = BF_MIN_KEY_SIZE,
- .max_keysize = BF_MAX_KEY_SIZE,
- .ivsize = BF_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = __ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
- },
-}, {
- .cra_name = "ctr(blowfish)",
- .cra_driver_name = "ctr-blowfish-avx2",
- .cra_priority = 400,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = BF_MIN_KEY_SIZE,
- .max_keysize = BF_MAX_KEY_SIZE,
- .ivsize = BF_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_encrypt,
- .geniv = "chainiv",
- },
- },
-} };
-
-
-static int __init init(void)
-{
- u64 xcr0;
-
- if (!cpu_has_avx2 || !cpu_has_osxsave) {
- pr_info("AVX2 instructions are not detected.\n");
- return -ENODEV;
- }
-
- xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK);
- if ((xcr0 & (XSTATE_SSE | XSTATE_YMM)) != (XSTATE_SSE | XSTATE_YMM)) {
- pr_info("AVX detected but unusable.\n");
- return -ENODEV;
- }
-
- return crypto_register_algs(bf_algs, ARRAY_SIZE(bf_algs));
-}
-
-static void __exit fini(void)
-{
- crypto_unregister_algs(bf_algs, ARRAY_SIZE(bf_algs));
-}
-
-module_init(init);
-module_exit(fini);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Blowfish Cipher Algorithm, AVX2 optimized");
-MODULE_ALIAS("blowfish");
-MODULE_ALIAS("blowfish-asm");
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 06:52:08 +0000