crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher

Patch adds AVX2/x86-64 implementation of Twofish cipher, requiring 16 parallel
blocks for input (256 bytes). Table look-ups are performed using vpgatherdd
instruction directly from vector registers and thus should be faster than
earlier implementations. Implementation also uses 256-bit wide YMM registers,
which should give additional speed up compared to the AVX implementation.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 12 insertions, 0 deletions

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index f3effb42531e..fea7841dd6f3 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1651,6 +1651,9 @@ static const struct alg_test_desc alg_test_descs[] = {
                 .alg = "__cbc-twofish-avx",
                 .test = alg_test_null,
         }, {
+                .alg = "__cbc-twofish-avx2",
+                .test = alg_test_null,
+        }, {
                 .alg = "__driver-cbc-aes-aesni",
                 .test = alg_test_null,
                 .fips_allowed = 1,
@@ -1676,6 +1679,9 @@ static const struct alg_test_desc alg_test_descs[] = {
                 .alg = "__driver-cbc-twofish-avx",
                 .test = alg_test_null,
         }, {
+                .alg = "__driver-cbc-twofish-avx2",
+                .test = alg_test_null,
+        }, {
                 .alg = "__driver-ecb-aes-aesni",
                 .test = alg_test_null,
                 .fips_allowed = 1,
@@ -1701,6 +1707,9 @@ static const struct alg_test_desc alg_test_descs[] = {
                 .alg = "__driver-ecb-twofish-avx",
                 .test = alg_test_null,
         }, {
+                .alg = "__driver-ecb-twofish-avx2",
+                .test = alg_test_null,
+        }, {
                 .alg = "__ghash-pclmulqdqni",
                 .test = alg_test_null,
                 .fips_allowed = 1,
@@ -1985,6 +1994,9 @@ static const struct alg_test_desc alg_test_descs[] = {
                 .alg = "cryptd(__driver-ecb-twofish-avx)",
                 .test = alg_test_null,
         }, {
+                .alg = "cryptd(__driver-ecb-twofish-avx2)",
+                .test = alg_test_null,
+        }, {
                 .alg = "cryptd(__driver-gcm-aes-aesni)",
                 .test = alg_test_null,
                 .fips_allowed = 1,