crypto: blowfish - add AVX2/x86_64 implementation of blowfish cipher

Patch adds AVX2/x86-64 implementation of Blowfish cipher, requiring 32 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.

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

2 files changed, 30 insertions, 0 deletions

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 0e7a23723b45..6b9564f91168 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -820,6 +820,24 @@ config CRYPTO_BLOWFISH_X86_64
           See also:
           <http://www.schneier.com/blowfish.html>
 
+config CRYPTO_BLOWFISH_AVX2_X86_64
+        tristate "Blowfish cipher algorithm (x86_64/AVX2)"
+        depends on X86 && 64BIT
+        select CRYPTO_ALGAPI
+        select CRYPTO_CRYPTD
+        select CRYPTO_ABLK_HELPER_X86
+        select CRYPTO_BLOWFISH_COMMON
+        select CRYPTO_BLOWFISH_X86_64
+        help
+          Blowfish cipher algorithm (x86_64/AVX2), by Bruce Schneier.
+
+          This is a variable key length cipher which can use keys from 32
+          bits to 448 bits in length.  It's fast, simple and specifically
+          designed for use on "large microprocessors".
+
+          See also:
+          <http://www.schneier.com/blowfish.html>
+
 config CRYPTO_CAMELLIA
         tristate "Camellia cipher algorithms"
         depends on CRYPTO
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 380708477b35..f3effb42531e 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1655,6 +1655,9 @@ static const struct alg_test_desc alg_test_descs[] = {
                 .test = alg_test_null,
                 .fips_allowed = 1,
         }, {
+                .alg = "__driver-cbc-blowfish-avx2",
+                .test = alg_test_null,
+        }, {
                 .alg = "__driver-cbc-camellia-aesni",
                 .test = alg_test_null,
         }, {
@@ -1677,6 +1680,9 @@ static const struct alg_test_desc alg_test_descs[] = {
                 .test = alg_test_null,
                 .fips_allowed = 1,
         }, {
+                .alg = "__driver-ecb-blowfish-avx2",
+                .test = alg_test_null,
+        }, {
                 .alg = "__driver-ecb-camellia-aesni",
                 .test = alg_test_null,
         }, {
@@ -1948,6 +1954,9 @@ static const struct alg_test_desc alg_test_descs[] = {
                 .test = alg_test_null,
                 .fips_allowed = 1,
         }, {
+                .alg = "cryptd(__driver-cbc-blowfish-avx2)",
+                .test = alg_test_null,
+        }, {
                 .alg = "cryptd(__driver-cbc-camellia-aesni)",
                 .test = alg_test_null,
         }, {
@@ -1955,6 +1964,9 @@ static const struct alg_test_desc alg_test_descs[] = {
                 .test = alg_test_null,
                 .fips_allowed = 1,
         }, {
+                .alg = "cryptd(__driver-ecb-blowfish-avx2)",
+                .test = alg_test_null,
+        }, {
                 .alg = "cryptd(__driver-ecb-camellia-aesni)",
                 .test = alg_test_null,
         }, {