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Diffstat (limited to 'arch/x86/crypto/serpent_avx_glue.c')
-rw-r--r--arch/x86/crypto/serpent_avx_glue.c145
1 files changed, 85 insertions, 60 deletions
diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c
index 52abaaf28e7f..9ae83cf8d21e 100644
--- a/arch/x86/crypto/serpent_avx_glue.c
+++ b/arch/x86/crypto/serpent_avx_glue.c
@@ -4,8 +4,7 @@
* Copyright (C) 2012 Johannes Goetzfried
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
*
- * Glue code based on serpent_sse2_glue.c by:
- * Copyright (C) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
+ * Copyright © 2011-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
*
* 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
@@ -42,7 +41,32 @@
#include <asm/crypto/ablk_helper.h>
#include <asm/crypto/glue_helper.h>
-static void serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv)
+/* 8-way parallel cipher functions */
+asmlinkage void serpent_ecb_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
+ const u8 *src);
+EXPORT_SYMBOL_GPL(serpent_ecb_enc_8way_avx);
+
+asmlinkage void serpent_ecb_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
+ const u8 *src);
+EXPORT_SYMBOL_GPL(serpent_ecb_dec_8way_avx);
+
+asmlinkage void serpent_cbc_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
+ const u8 *src);
+EXPORT_SYMBOL_GPL(serpent_cbc_dec_8way_avx);
+
+asmlinkage void serpent_ctr_8way_avx(struct serpent_ctx *ctx, u8 *dst,
+ const u8 *src, le128 *iv);
+EXPORT_SYMBOL_GPL(serpent_ctr_8way_avx);
+
+asmlinkage void serpent_xts_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
+ const u8 *src, le128 *iv);
+EXPORT_SYMBOL_GPL(serpent_xts_enc_8way_avx);
+
+asmlinkage void serpent_xts_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
+ const u8 *src, le128 *iv);
+EXPORT_SYMBOL_GPL(serpent_xts_dec_8way_avx);
+
+void __serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
be128 ctrblk;
@@ -52,6 +76,22 @@ static void serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv)
__serpent_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
u128_xor(dst, src, (u128 *)&ctrblk);
}
+EXPORT_SYMBOL_GPL(__serpent_crypt_ctr);
+
+void serpent_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
+{
+ glue_xts_crypt_128bit_one(ctx, dst, src, iv,
+ GLUE_FUNC_CAST(__serpent_encrypt));
+}
+EXPORT_SYMBOL_GPL(serpent_xts_enc);
+
+void serpent_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv)
+{
+ glue_xts_crypt_128bit_one(ctx, dst, src, iv,
+ GLUE_FUNC_CAST(__serpent_decrypt));
+}
+EXPORT_SYMBOL_GPL(serpent_xts_dec);
+
static const struct common_glue_ctx serpent_enc = {
.num_funcs = 2,
@@ -75,7 +115,20 @@ static const struct common_glue_ctx serpent_ctr = {
.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_8way_avx) }
}, {
.num_blocks = 1,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_crypt_ctr) }
+ .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(__serpent_crypt_ctr) }
+ } }
+};
+
+static const struct common_glue_ctx serpent_enc_xts = {
+ .num_funcs = 2,
+ .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
+
+ .funcs = { {
+ .num_blocks = SERPENT_PARALLEL_BLOCKS,
+ .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_8way_avx) }
+ }, {
+ .num_blocks = 1,
+ .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc) }
} }
};
@@ -105,6 +158,19 @@ static const struct common_glue_ctx serpent_dec_cbc = {
} }
};
+static const struct common_glue_ctx serpent_dec_xts = {
+ .num_funcs = 2,
+ .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
+
+ .funcs = { {
+ .num_blocks = SERPENT_PARALLEL_BLOCKS,
+ .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_8way_avx) }
+ }, {
+ .num_blocks = 1,
+ .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec) }
+ } }
+};
+
static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
@@ -187,13 +253,8 @@ static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
__serpent_decrypt(ctx->ctx, srcdst, srcdst);
}
-struct serpent_lrw_ctx {
- struct lrw_table_ctx lrw_table;
- struct serpent_ctx serpent_ctx;
-};
-
-static int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
+int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen)
{
struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
int err;
@@ -206,6 +267,7 @@ static int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
return lrw_init_table(&ctx->lrw_table, key + keylen -
SERPENT_BLOCK_SIZE);
}
+EXPORT_SYMBOL_GPL(lrw_serpent_setkey);
static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
@@ -259,20 +321,16 @@ static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
return ret;
}
-static void lrw_exit_tfm(struct crypto_tfm *tfm)
+void lrw_serpent_exit_tfm(struct crypto_tfm *tfm)
{
struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
lrw_free_table(&ctx->lrw_table);
}
+EXPORT_SYMBOL_GPL(lrw_serpent_exit_tfm);
-struct serpent_xts_ctx {
- struct serpent_ctx tweak_ctx;
- struct serpent_ctx crypt_ctx;
-};
-
-static int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
+int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen)
{
struct serpent_xts_ctx *ctx = crypto_tfm_ctx(tfm);
u32 *flags = &tfm->crt_flags;
@@ -294,59 +352,26 @@ static int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
/* second half of xts-key is for tweak */
return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2);
}
+EXPORT_SYMBOL_GPL(xts_serpent_setkey);
static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- be128 buf[SERPENT_PARALLEL_BLOCKS];
- struct crypt_priv crypt_ctx = {
- .ctx = &ctx->crypt_ctx,
- .fpu_enabled = false,
- };
- struct xts_crypt_req req = {
- .tbuf = buf,
- .tbuflen = sizeof(buf),
-
- .tweak_ctx = &ctx->tweak_ctx,
- .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt),
- .crypt_ctx = &crypt_ctx,
- .crypt_fn = encrypt_callback,
- };
- int ret;
-
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
- ret = xts_crypt(desc, dst, src, nbytes, &req);
- serpent_fpu_end(crypt_ctx.fpu_enabled);
- return ret;
+ return glue_xts_crypt_128bit(&serpent_enc_xts, desc, dst, src, nbytes,
+ XTS_TWEAK_CAST(__serpent_encrypt),
+ &ctx->tweak_ctx, &ctx->crypt_ctx);
}
static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- be128 buf[SERPENT_PARALLEL_BLOCKS];
- struct crypt_priv crypt_ctx = {
- .ctx = &ctx->crypt_ctx,
- .fpu_enabled = false,
- };
- struct xts_crypt_req req = {
- .tbuf = buf,
- .tbuflen = sizeof(buf),
-
- .tweak_ctx = &ctx->tweak_ctx,
- .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt),
- .crypt_ctx = &crypt_ctx,
- .crypt_fn = decrypt_callback,
- };
- int ret;
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
- ret = xts_crypt(desc, dst, src, nbytes, &req);
- serpent_fpu_end(crypt_ctx.fpu_enabled);
-
- return ret;
+ return glue_xts_crypt_128bit(&serpent_dec_xts, desc, dst, src, nbytes,
+ XTS_TWEAK_CAST(__serpent_encrypt),
+ &ctx->tweak_ctx, &ctx->crypt_ctx);
}
static struct crypto_alg serpent_algs[10] = { {
@@ -417,7 +442,7 @@ static struct crypto_alg serpent_algs[10] = { {
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
- .cra_exit = lrw_exit_tfm,
+ .cra_exit = lrw_serpent_exit_tfm,
.cra_u = {
.blkcipher = {
.min_keysize = SERPENT_MIN_KEY_SIZE +
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-25 02:54:25 +0000