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authorDamjan Marion <damarion@cisco.com>2019-12-19 13:27:28 +0100
committerFlorin Coras <florin.coras@gmail.com>2020-01-27 21:36:19 +0000
commite9595dba26b32abb673f74b777429ae5640dc325 (patch)
treef397ca1be176d8ad879e3c83cc84545bc3a7223d /src/plugins
parentbd5c49a1615e36260a86184d087b5b47a5e747be (diff)
crypto-ia32: add VAES support for AES-CBC
Type: feature Change-Id: Ic8aa6c48913677537301971469f9627b70c1cec8 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/crypto_ia32/CMakeLists.txt3
-rw-r--r--src/plugins/crypto_ia32/aes_cbc.c282
-rw-r--r--src/plugins/crypto_ia32/aes_gcm.c4
-rw-r--r--src/plugins/crypto_ia32/crypto_ia32.h2
-rw-r--r--src/plugins/crypto_ia32/main.c8
5 files changed, 249 insertions, 50 deletions
diff --git a/src/plugins/crypto_ia32/CMakeLists.txt b/src/plugins/crypto_ia32/CMakeLists.txt
index cab1c35e0f2..0a8b560731a 100644
--- a/src/plugins/crypto_ia32/CMakeLists.txt
+++ b/src/plugins/crypto_ia32/CMakeLists.txt
@@ -22,6 +22,9 @@ list(APPEND VARIANTS "avx2\;-march=core-avx2")
if(compiler_flag_march_skylake_avx512)
list(APPEND VARIANTS "avx512\;-march=skylake-avx512")
endif()
+if(compiler_flag_march_icelake_client)
+ list(APPEND VARIANTS "vaesni\;-march=icelake-client")
+endif()
foreach(VARIANT ${VARIANTS})
list(GET VARIANT 0 v)
diff --git a/src/plugins/crypto_ia32/aes_cbc.c b/src/plugins/crypto_ia32/aes_cbc.c
index 4ad01b52b29..910f8ca7413 100644
--- a/src/plugins/crypto_ia32/aes_cbc.c
+++ b/src/plugins/crypto_ia32/aes_cbc.c
@@ -29,27 +29,80 @@
typedef struct
{
__m128i encrypt_key[15];
+#if __VAES__
+ __m512i decrypt_key[15];
+#else
__m128i decrypt_key[15];
+#endif
} aes_cbc_key_data_t;
+static_always_inline __m128i
+aes_block_load (u8 * p)
+{
+ return _mm_loadu_si128 ((__m128i *) p);
+}
+
+static_always_inline void
+aes_block_store (u8 * p, __m128i r)
+{
+ _mm_storeu_si128 ((__m128i *) p, r);
+}
+
+static_always_inline __m128i __clib_unused
+xor3 (__m128i a, __m128i b, __m128i c)
+{
+#if __AVX512F__
+ return _mm_ternarylogic_epi32 (a, b, c, 0x96);
+#endif
+ return a ^ b ^ c;
+}
+
+#if __VAES__
+static_always_inline __m512i
+xor3_x4 (__m512i a, __m512i b, __m512i c)
+{
+ return _mm512_ternarylogic_epi32 (a, b, c, 0x96);
+}
+
+static_always_inline __m512i
+aes_block_load_x4 (u8 * src[], int i)
+{
+ __m512i r = { };
+ r = _mm512_inserti64x2 (r, aes_block_load (src[0] + i), 0);
+ r = _mm512_inserti64x2 (r, aes_block_load (src[1] + i), 1);
+ r = _mm512_inserti64x2 (r, aes_block_load (src[2] + i), 2);
+ r = _mm512_inserti64x2 (r, aes_block_load (src[3] + i), 3);
+ return r;
+}
+
static_always_inline void
+aes_block_store_x4 (u8 * dst[], int i, __m512i r)
+{
+ aes_block_store (dst[0] + i, _mm512_extracti64x2_epi64 (r, 0));
+ aes_block_store (dst[1] + i, _mm512_extracti64x2_epi64 (r, 1));
+ aes_block_store (dst[2] + i, _mm512_extracti64x2_epi64 (r, 2));
+ aes_block_store (dst[3] + i, _mm512_extracti64x2_epi64 (r, 3));
+}
+#endif
+
+static_always_inline void __clib_unused
aes_cbc_dec (__m128i * k, u8 * src, u8 * dst, u8 * iv, int count,
aesni_key_size_t rounds)
{
__m128i r0, r1, r2, r3, c0, c1, c2, c3, f;
int i;
- f = _mm_loadu_si128 ((__m128i *) iv);
+ f = aes_block_load (iv);
while (count >= 64)
{
_mm_prefetch (src + 128, _MM_HINT_T0);
_mm_prefetch (dst + 128, _MM_HINT_T0);
- c0 = _mm_loadu_si128 (((__m128i *) src + 0));
- c1 = _mm_loadu_si128 (((__m128i *) src + 1));
- c2 = _mm_loadu_si128 (((__m128i *) src + 2));
- c3 = _mm_loadu_si128 (((__m128i *) src + 3));
+ c0 = aes_block_load (src);
+ c1 = aes_block_load (src + 16);
+ c2 = aes_block_load (src + 32);
+ c3 = aes_block_load (src + 48);
r0 = c0 ^ k[0];
r1 = c1 ^ k[0];
@@ -69,10 +122,10 @@ aes_cbc_dec (__m128i * k, u8 * src, u8 * dst, u8 * iv, int count,
r2 = _mm_aesdeclast_si128 (r2, k[i]);
r3 = _mm_aesdeclast_si128 (r3, k[i]);
- _mm_storeu_si128 ((__m128i *) dst + 0, r0 ^ f);
- _mm_storeu_si128 ((__m128i *) dst + 1, r1 ^ c0);
- _mm_storeu_si128 ((__m128i *) dst + 2, r2 ^ c1);
- _mm_storeu_si128 ((__m128i *) dst + 3, r3 ^ c2);
+ aes_block_store (dst, r0 ^ f);
+ aes_block_store (dst + 16, r1 ^ c0);
+ aes_block_store (dst + 32, r2 ^ c1);
+ aes_block_store (dst + 48, r3 ^ c2);
f = c3;
@@ -83,12 +136,12 @@ aes_cbc_dec (__m128i * k, u8 * src, u8 * dst, u8 * iv, int count,
while (count > 0)
{
- c0 = _mm_loadu_si128 (((__m128i *) src));
+ c0 = aes_block_load (src);
r0 = c0 ^ k[0];
for (i = 1; i < rounds; i++)
r0 = _mm_aesdec_si128 (r0, k[i]);
r0 = _mm_aesdeclast_si128 (r0, k[i]);
- _mm_storeu_si128 ((__m128i *) dst, r0 ^ f);
+ aes_block_store (dst, r0 ^ f);
f = c0;
count -= 16;
src += 16;
@@ -96,6 +149,91 @@ aes_cbc_dec (__m128i * k, u8 * src, u8 * dst, u8 * iv, int count,
}
}
+#ifdef __VAES__
+static_always_inline void
+vaes_cbc_dec (__m512i * k, u8 * src, u8 * dst, u8 * iv, int count,
+ aesni_key_size_t rounds)
+{
+ __m512i permute = { 6, 7, 8, 9, 10, 11, 12, 13 };
+ __m512i r0, r1, r2, r3, c0, c1, c2, c3, f = { };
+ __mmask8 m;
+ int i, n_blocks = count >> 4;
+
+ f = _mm512_mask_loadu_epi64 (f, 0xc0, (__m512i *) (iv - 48));
+
+ while (n_blocks >= 16)
+ {
+ c0 = _mm512_loadu_si512 ((__m512i *) src);
+ c1 = _mm512_loadu_si512 ((__m512i *) (src + 64));
+ c2 = _mm512_loadu_si512 ((__m512i *) (src + 128));
+ c3 = _mm512_loadu_si512 ((__m512i *) (src + 192));
+
+ r0 = c0 ^ k[0];
+ r1 = c1 ^ k[0];
+ r2 = c2 ^ k[0];
+ r3 = c3 ^ k[0];
+
+ for (i = 1; i < rounds; i++)
+ {
+ r0 = _mm512_aesdec_epi128 (r0, k[i]);
+ r1 = _mm512_aesdec_epi128 (r1, k[i]);
+ r2 = _mm512_aesdec_epi128 (r2, k[i]);
+ r3 = _mm512_aesdec_epi128 (r3, k[i]);
+ }
+
+ r0 = _mm512_aesdeclast_epi128 (r0, k[i]);
+ r1 = _mm512_aesdeclast_epi128 (r1, k[i]);
+ r2 = _mm512_aesdeclast_epi128 (r2, k[i]);
+ r3 = _mm512_aesdeclast_epi128 (r3, k[i]);
+
+ r0 ^= _mm512_permutex2var_epi64 (f, permute, c0);
+ _mm512_storeu_si512 ((__m512i *) dst, r0);
+
+ r1 ^= _mm512_permutex2var_epi64 (c0, permute, c1);
+ _mm512_storeu_si512 ((__m512i *) (dst + 64), r1);
+
+ r2 ^= _mm512_permutex2var_epi64 (c1, permute, c2);
+ _mm512_storeu_si512 ((__m512i *) (dst + 128), r2);
+
+ r3 ^= _mm512_permutex2var_epi64 (c2, permute, c3);
+ _mm512_storeu_si512 ((__m512i *) (dst + 192), r3);
+ f = c3;
+
+ n_blocks -= 16;
+ src += 256;
+ dst += 256;
+ }
+
+ while (n_blocks > 0)
+ {
+ m = (1 << (n_blocks * 2)) - 1;
+ c0 = _mm512_mask_loadu_epi64 (c0, m, (__m512i *) src);
+ f = _mm512_permutex2var_epi64 (f, permute, c0);
+ r0 = c0 ^ k[0];
+ for (i = 1; i < rounds; i++)
+ r0 = _mm512_aesdec_epi128 (r0, k[i]);
+ r0 = _mm512_aesdeclast_epi128 (r0, k[i]);
+ _mm512_mask_storeu_epi64 ((__m512i *) dst, m, r0 ^ f);
+ f = c0;
+ n_blocks -= 4;
+ src += 64;
+ dst += 64;
+ }
+}
+#endif
+
+#ifdef __VAES__
+#define N 16
+#define u32xN u32x16
+#define u32xN_min_scalar u32x16_min_scalar
+#define u32xN_is_all_zero u32x16_is_all_zero
+#else
+#define N 4
+#define u32xN u32x4
+#define u32xN_min_scalar u32x4_min_scalar
+#define u32xN_is_all_zero u32x4_is_all_zero
+#endif
+
static_always_inline u32
aesni_ops_enc_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[],
u32 n_ops, aesni_key_size_t ks)
@@ -105,16 +243,25 @@ aesni_ops_enc_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[],
vm->thread_index);
int rounds = AESNI_KEY_ROUNDS (ks);
u8 dummy[8192];
- u8 *src[4] = { };
- u8 *dst[4] = { };
- vnet_crypto_key_index_t key_index[4] = { ~0, ~0, ~0, ~0 };
- u32x4 dummy_mask = { };
- u32x4 len = { };
u32 i, j, count, n_left = n_ops;
- __m128i r[4] = { }, k[4][rounds + 1];
+ u32xN dummy_mask = { };
+ u32xN len = { };
+ vnet_crypto_key_index_t key_index[N];
+ u8 *src[N] = { };
+ u8 *dst[N] = { };
+ /* *INDENT-OFF* */
+ union
+ {
+ __m128i x1[N];
+ __m512i x4[N / 4];
+ } r = { }, k[15] = { };
+ /* *INDENT-ON* */
+
+ for (i = 0; i < N; i++)
+ key_index[i] = ~0;
more:
- for (i = 0; i < 4; i++)
+ for (i = 0; i < N; i++)
if (len[i] == 0)
{
if (n_left == 0)
@@ -128,12 +275,13 @@ more:
{
if (ops[0]->flags & VNET_CRYPTO_OP_FLAG_INIT_IV)
{
- r[i] = ptd->cbc_iv[i];
- _mm_storeu_si128 ((__m128i *) ops[0]->iv, r[i]);
- ptd->cbc_iv[i] = _mm_aesenc_si128 (r[i], r[i]);
+ r.x1[i] = ptd->cbc_iv[i];
+ aes_block_store (ops[0]->iv, r.x1[i]);
+ ptd->cbc_iv[i] = _mm_aesenc_si128 (r.x1[i], r.x1[i]);
}
else
- r[i] = _mm_loadu_si128 ((__m128i *) ops[0]->iv);
+ r.x1[i] = aes_block_load (ops[0]->iv);
+
src[i] = ops[0]->src;
dst[i] = ops[0]->dst;
len[i] = ops[0]->len;
@@ -143,8 +291,8 @@ more:
aes_cbc_key_data_t *kd;
key_index[i] = ops[0]->key_index;
kd = (aes_cbc_key_data_t *) cm->key_data[key_index[i]];
- clib_memcpy_fast (k[i], kd->encrypt_key,
- (rounds + 1) * sizeof (__m128i));
+ for (j = 0; j < rounds + 1; j++)
+ k[j].x1[i] = kd->encrypt_key[j];
}
ops[0]->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
n_left--;
@@ -152,37 +300,61 @@ more:
}
}
- count = u32x4_min_scalar (len);
+ count = u32xN_min_scalar (len);
ASSERT (count % 16 == 0);
for (i = 0; i < count; i += 16)
{
- r[0] ^= _mm_loadu_si128 ((__m128i *) (src[0] + i)) ^ k[0][0];
- r[1] ^= _mm_loadu_si128 ((__m128i *) (src[1] + i)) ^ k[1][0];
- r[2] ^= _mm_loadu_si128 ((__m128i *) (src[2] + i)) ^ k[2][0];
- r[3] ^= _mm_loadu_si128 ((__m128i *) (src[3] + i)) ^ k[3][0];
+#ifdef __VAES__
+ r.x4[0] = xor3_x4 (r.x4[0], aes_block_load_x4 (src, i), k[0].x4[0]);
+ r.x4[1] = xor3_x4 (r.x4[1], aes_block_load_x4 (src, i), k[0].x4[1]);
+ r.x4[2] = xor3_x4 (r.x4[2], aes_block_load_x4 (src, i), k[0].x4[2]);
+ r.x4[3] = xor3_x4 (r.x4[3], aes_block_load_x4 (src, i), k[0].x4[3]);
+
+ for (j = 1; j < rounds; j++)
+ {
+ r.x4[0] = _mm512_aesenc_epi128 (r.x4[0], k[j].x4[0]);
+ r.x4[1] = _mm512_aesenc_epi128 (r.x4[1], k[j].x4[1]);
+ r.x4[2] = _mm512_aesenc_epi128 (r.x4[2], k[j].x4[2]);
+ r.x4[3] = _mm512_aesenc_epi128 (r.x4[3], k[j].x4[3]);
+ }
+ r.x4[0] = _mm512_aesenclast_epi128 (r.x4[0], k[j].x4[0]);
+ r.x4[1] = _mm512_aesenclast_epi128 (r.x4[1], k[j].x4[1]);
+ r.x4[2] = _mm512_aesenclast_epi128 (r.x4[2], k[j].x4[2]);
+ r.x4[3] = _mm512_aesenclast_epi128 (r.x4[3], k[j].x4[3]);
+
+ aes_block_store_x4 (dst, i, r.x4[0]);
+ aes_block_store_x4 (dst + 4, i, r.x4[1]);
+ aes_block_store_x4 (dst + 8, i, r.x4[2]);
+ aes_block_store_x4 (dst + 12, i, r.x4[3]);
+#else
+ r.x1[0] = xor3 (r.x1[0], aes_block_load (src[0] + i), k[0].x1[0]);
+ r.x1[1] = xor3 (r.x1[1], aes_block_load (src[1] + i), k[0].x1[1]);
+ r.x1[2] = xor3 (r.x1[2], aes_block_load (src[2] + i), k[0].x1[2]);
+ r.x1[3] = xor3 (r.x1[3], aes_block_load (src[3] + i), k[0].x1[3]);
for (j = 1; j < rounds; j++)
{
- r[0] = _mm_aesenc_si128 (r[0], k[0][j]);
- r[1] = _mm_aesenc_si128 (r[1], k[1][j]);
- r[2] = _mm_aesenc_si128 (r[2], k[2][j]);
- r[3] = _mm_aesenc_si128 (r[3], k[3][j]);
+ r.x1[0] = _mm_aesenc_si128 (r.x1[0], k[j].x1[0]);
+ r.x1[1] = _mm_aesenc_si128 (r.x1[1], k[j].x1[1]);
+ r.x1[2] = _mm_aesenc_si128 (r.x1[2], k[j].x1[2]);
+ r.x1[3] = _mm_aesenc_si128 (r.x1[3], k[j].x1[3]);
}
- r[0] = _mm_aesenclast_si128 (r[0], k[0][j]);
- r[1] = _mm_aesenclast_si128 (r[1], k[1][j]);
- r[2] = _mm_aesenclast_si128 (r[2], k[2][j]);
- r[3] = _mm_aesenclast_si128 (r[3], k[3][j]);
+ r.x1[0] = _mm_aesenclast_si128 (r.x1[0], k[j].x1[0]);
+ r.x1[1] = _mm_aesenclast_si128 (r.x1[1], k[j].x1[1]);
+ r.x1[2] = _mm_aesenclast_si128 (r.x1[2], k[j].x1[2]);
+ r.x1[3] = _mm_aesenclast_si128 (r.x1[3], k[j].x1[3]);
- _mm_storeu_si128 ((__m128i *) (dst[0] + i), r[0]);
- _mm_storeu_si128 ((__m128i *) (dst[1] + i), r[1]);
- _mm_storeu_si128 ((__m128i *) (dst[2] + i), r[2]);
- _mm_storeu_si128 ((__m128i *) (dst[3] + i), r[3]);
+ aes_block_store (dst[0] + i, r.x1[0]);
+ aes_block_store (dst[1] + i, r.x1[1]);
+ aes_block_store (dst[2] + i, r.x1[2]);
+ aes_block_store (dst[3] + i, r.x1[3]);
+#endif
}
- for (i = 0; i < 4; i++)
+ for (i = 0; i < N; i++)
{
src[i] += count;
dst[i] += count;
@@ -192,7 +364,7 @@ more:
if (n_left > 0)
goto more;
- if (!u32x4_is_all_zero (len & dummy_mask))
+ if (!u32xN_is_all_zero (len & dummy_mask))
goto more;
return n_ops;
@@ -211,7 +383,11 @@ aesni_ops_dec_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[],
ASSERT (n_ops >= 1);
decrypt:
+#ifdef __VAES__
+ vaes_cbc_dec (kd->decrypt_key, op->src, op->dst, op->iv, op->len, rounds);
+#else
aes_cbc_dec (kd->decrypt_key, op->src, op->dst, op->iv, op->len, rounds);
+#endif
op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
if (--n_left)
@@ -227,11 +403,21 @@ decrypt:
static_always_inline void *
aesni_cbc_key_exp (vnet_crypto_key_t * key, aesni_key_size_t ks)
{
+ __m128i e[15], d[15];
aes_cbc_key_data_t *kd;
kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES);
- aes_key_expand (kd->encrypt_key, key->data, ks);
- aes_key_expand (kd->decrypt_key, key->data, ks);
- aes_key_enc_to_dec (kd->decrypt_key, ks);
+ aes_key_expand (e, key->data, ks);
+ aes_key_expand (d, key->data, ks);
+ aes_key_enc_to_dec (d, ks);
+ for (int i = 0; i < AESNI_KEY_ROUNDS (ks) + 1; i++)
+ {
+#if __VAES__
+ kd->decrypt_key[i] = _mm512_broadcast_i64x2 (d[i]);
+#else
+ kd->decrypt_key[i] = d[i];
+#endif
+ kd->encrypt_key[i] = e[i];
+ }
return kd;
}
@@ -253,7 +439,9 @@ foreach_aesni_cbc_handler_type;
#include <fcntl.h>
clib_error_t *
-#ifdef __AVX512F__
+#ifdef __VAES__
+crypto_ia32_aesni_cbc_init_vaes (vlib_main_t * vm)
+#elif __AVX512F__
crypto_ia32_aesni_cbc_init_avx512 (vlib_main_t * vm)
#elif __AVX2__
crypto_ia32_aesni_cbc_init_avx2 (vlib_main_t * vm)
diff --git a/src/plugins/crypto_ia32/aes_gcm.c b/src/plugins/crypto_ia32/aes_gcm.c
index a21ecf3e6df..e45dda79faf 100644
--- a/src/plugins/crypto_ia32/aes_gcm.c
+++ b/src/plugins/crypto_ia32/aes_gcm.c
@@ -746,7 +746,9 @@ foreach_aesni_gcm_handler_type;
#undef _
clib_error_t *
-#ifdef __AVX512F__
+#ifdef __VAES__
+crypto_ia32_aesni_gcm_init_vaes (vlib_main_t * vm)
+#elif __AVX512F__
crypto_ia32_aesni_gcm_init_avx512 (vlib_main_t * vm)
#elif __AVX2__
crypto_ia32_aesni_gcm_init_avx2 (vlib_main_t * vm)
diff --git a/src/plugins/crypto_ia32/crypto_ia32.h b/src/plugins/crypto_ia32/crypto_ia32.h
index f80a0d09a3b..e2b30071854 100644
--- a/src/plugins/crypto_ia32/crypto_ia32.h
+++ b/src/plugins/crypto_ia32/crypto_ia32.h
@@ -38,10 +38,12 @@ extern crypto_ia32_main_t crypto_ia32_main;
clib_error_t *crypto_ia32_aesni_cbc_init_sse42 (vlib_main_t * vm);
clib_error_t *crypto_ia32_aesni_cbc_init_avx2 (vlib_main_t * vm);
clib_error_t *crypto_ia32_aesni_cbc_init_avx512 (vlib_main_t * vm);
+clib_error_t *crypto_ia32_aesni_cbc_init_vaes (vlib_main_t * vm);
clib_error_t *crypto_ia32_aesni_gcm_init_sse42 (vlib_main_t * vm);
clib_error_t *crypto_ia32_aesni_gcm_init_avx2 (vlib_main_t * vm);
clib_error_t *crypto_ia32_aesni_gcm_init_avx512 (vlib_main_t * vm);
+clib_error_t *crypto_ia32_aesni_gcm_init_vaes (vlib_main_t * vm);
#endif /* __crypto_ia32_h__ */
/*
diff --git a/src/plugins/crypto_ia32/main.c b/src/plugins/crypto_ia32/main.c
index 194182fd57a..bcfd7fa6ffd 100644
--- a/src/plugins/crypto_ia32/main.c
+++ b/src/plugins/crypto_ia32/main.c
@@ -72,7 +72,9 @@ crypto_ia32_init (vlib_main_t * vm)
vnet_crypto_register_engine (vm, "ia32", 100,
"Intel IA32 ISA Optimized Crypto");
- if (clib_cpu_supports_avx512f ())
+ if (clib_cpu_supports_vaes ())
+ error = crypto_ia32_aesni_cbc_init_vaes (vm);
+ else if (clib_cpu_supports_avx512f ())
error = crypto_ia32_aesni_cbc_init_avx512 (vm);
else if (clib_cpu_supports_avx2 ())
error = crypto_ia32_aesni_cbc_init_avx2 (vm);
@@ -84,7 +86,9 @@ crypto_ia32_init (vlib_main_t * vm)
if (clib_cpu_supports_pclmulqdq ())
{
- if (clib_cpu_supports_avx512f ())
+ if (clib_cpu_supports_vaes ())
+ error = crypto_ia32_aesni_gcm_init_vaes (vm);
+ else if (clib_cpu_supports_avx512f ())
error = crypto_ia32_aesni_gcm_init_avx512 (vm);
else if (clib_cpu_supports_avx2 ())
error = crypto_ia32_aesni_gcm_init_avx2 (vm);