arm/crypto: Add optimized AES and SHA1 routines

Add assembler versions of AES and SHA1 for ARM platforms.  This has provided
up to a 50% improvement in IPsec/TCP throughout for tunnels using AES128/SHA1.

Platform   CPU SPeed    Endian   Before (bps)   After (bps)   Improvement

IXP425      533 MHz      big     11217042        15566294        ~38%
KS8695      166 MHz     little    3828549         5795373        ~51%

Signed-off-by: David McCullough <ucdevel@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 33 insertions, 0 deletions

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 213fb37be51..27307981f88 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -433,6 +433,15 @@ config CRYPTO_SHA1_SSSE3
           using Supplemental SSE3 (SSSE3) instructions or Advanced Vector
           Extensions (AVX), when available.
 
+config CRYPTO_SHA1_ARM
+        tristate "SHA1 digest algorithm (ARM-asm)"
+        depends on ARM
+        select CRYPTO_SHA1
+        select CRYPTO_HASH
+        help
+          SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
+          using optimized ARM assembler.
+
 config CRYPTO_SHA256
         tristate "SHA224 and SHA256 digest algorithm"
         select CRYPTO_HASH
@@ -590,6 +599,30 @@ config CRYPTO_AES_NI_INTEL
           ECB, CBC, LRW, PCBC, XTS. The 64 bit version has additional
           acceleration for CTR.
 
+config CRYPTO_AES_ARM
+        tristate "AES cipher algorithms (ARM-asm)"
+        depends on ARM
+        select CRYPTO_ALGAPI
+        select CRYPTO_AES
+        help
+          Use optimized AES assembler routines for ARM platforms.
+
+          AES cipher algorithms (FIPS-197). AES uses the Rijndael
+          algorithm.
+
+          Rijndael appears to be consistently a very good performer in
+          both hardware and software across a wide range of computing
+          environments regardless of its use in feedback or non-feedback
+          modes. Its key setup time is excellent, and its key agility is
+          good. Rijndael's very low memory requirements make it very well
+          suited for restricted-space environments, in which it also
+          demonstrates excellent performance. Rijndael's operations are
+          among the easiest to defend against power and timing attacks.
+
+          The AES specifies three key sizes: 128, 192 and 256 bits
+
+          See <http://csrc.nist.gov/encryption/aes/> for more information.
+
 config CRYPTO_ANUBIS
         tristate "Anubis cipher algorithm"
         select CRYPTO_ALGAPI