crypto: twofish-x86_64-3way - add lrw support
Patch adds LRW support for twofish-x86_64-3way by using lrw_crypt(). Patch has
been tested with tcrypt and automated filesystem tests.
Tcrypt benchmarks results (twofish-3way/twofish-asm speed ratios):
Intel Celeron T1600 (fam:6, model:15, step:13):
size lrw-enc lrw-dec
16B 0.99x 1.00x
64B 1.17x 1.17x
256B 1.26x 1.27x
1024B 1.30x 1.31x
8192B 1.31x 1.32x
AMD Phenom II 1055T (fam:16, model:10):
size lrw-enc lrw-dec
16B 1.06x 1.01x
64B 1.08x 1.14x
256B 1.19x 1.20x
1024B 1.21x 1.22x
8192B 1.23x 1.24x
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/twofish_common.c b/crypto/twofish_common.c
index 0af216c..5f62c4f 100644
--- a/crypto/twofish_common.c
+++ b/crypto/twofish_common.c
@@ -580,12 +580,9 @@
ctx->a[(j) + 1] = rol32(y, 9)
/* Perform the key setup. */
-int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len)
+int __twofish_setkey(struct twofish_ctx *ctx, const u8 *key,
+ unsigned int key_len, u32 *flags)
{
-
- struct twofish_ctx *ctx = crypto_tfm_ctx(tfm);
- u32 *flags = &tfm->crt_flags;
-
int i, j, k;
/* Temporaries for CALC_K. */
@@ -701,7 +698,13 @@
return 0;
}
+EXPORT_SYMBOL_GPL(__twofish_setkey);
+int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len)
+{
+ return __twofish_setkey(crypto_tfm_ctx(tfm), key, key_len,
+ &tfm->crt_flags);
+}
EXPORT_SYMBOL_GPL(twofish_setkey);
MODULE_LICENSE("GPL");