diff options
Diffstat (limited to 'src/plugins/crypto_ia32/aes_cbc.c')
| -rw-r--r-- | src/plugins/crypto_ia32/aes_cbc.c | 497 |
1 files changed, 0 insertions, 497 deletions
diff --git a/src/plugins/crypto_ia32/aes_cbc.c b/src/plugins/crypto_ia32/aes_cbc.c deleted file mode 100644 index 910f8ca7413..00000000000 --- a/src/plugins/crypto_ia32/aes_cbc.c +++ /dev/null @@ -1,497 +0,0 @@ -/* - *------------------------------------------------------------------ - * Copyright (c) 2019 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - *------------------------------------------------------------------ - */ - -#include <vlib/vlib.h> -#include <vnet/plugin/plugin.h> -#include <vnet/crypto/crypto.h> -#include <x86intrin.h> -#include <crypto_ia32/crypto_ia32.h> -#include <crypto_ia32/aesni.h> - -#if __GNUC__ > 4 && !__clang__ && CLIB_DEBUG == 0 -#pragma GCC optimize ("O3") -#endif - -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 = aes_block_load (iv); - - while (count >= 64) - { - _mm_prefetch (src + 128, _MM_HINT_T0); - _mm_prefetch (dst + 128, _MM_HINT_T0); - - 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]; - r2 = c2 ^ k[0]; - r3 = c3 ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r0 = _mm_aesdec_si128 (r0, k[i]); - r1 = _mm_aesdec_si128 (r1, k[i]); - r2 = _mm_aesdec_si128 (r2, k[i]); - r3 = _mm_aesdec_si128 (r3, k[i]); - } - - r0 = _mm_aesdeclast_si128 (r0, k[i]); - r1 = _mm_aesdeclast_si128 (r1, k[i]); - r2 = _mm_aesdeclast_si128 (r2, k[i]); - r3 = _mm_aesdeclast_si128 (r3, k[i]); - - 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; - - count -= 64; - src += 64; - dst += 64; - } - - while (count > 0) - { - 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]); - aes_block_store (dst, r0 ^ f); - f = c0; - count -= 16; - src += 16; - dst += 16; - } -} - -#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) -{ - crypto_ia32_main_t *cm = &crypto_ia32_main; - crypto_ia32_per_thread_data_t *ptd = vec_elt_at_index (cm->per_thread_data, - vm->thread_index); - int rounds = AESNI_KEY_ROUNDS (ks); - u8 dummy[8192]; - u32 i, j, count, n_left = n_ops; - 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 < N; i++) - if (len[i] == 0) - { - if (n_left == 0) - { - /* no more work to enqueue, so we are enqueueing dummy buffer */ - src[i] = dst[i] = dummy; - len[i] = sizeof (dummy); - dummy_mask[i] = 0; - } - else - { - if (ops[0]->flags & VNET_CRYPTO_OP_FLAG_INIT_IV) - { - 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.x1[i] = aes_block_load (ops[0]->iv); - - src[i] = ops[0]->src; - dst[i] = ops[0]->dst; - len[i] = ops[0]->len; - dummy_mask[i] = ~0; - if (key_index[i] != ops[0]->key_index) - { - 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]]; - 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--; - ops++; - } - } - - count = u32xN_min_scalar (len); - - ASSERT (count % 16 == 0); - - for (i = 0; i < count; i += 16) - { -#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.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.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]); - - 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 < N; i++) - { - src[i] += count; - dst[i] += count; - len[i] -= count; - } - - if (n_left > 0) - goto more; - - if (!u32xN_is_all_zero (len & dummy_mask)) - goto more; - - return n_ops; -} - -static_always_inline u32 -aesni_ops_dec_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], - u32 n_ops, aesni_key_size_t ks) -{ - crypto_ia32_main_t *cm = &crypto_ia32_main; - int rounds = AESNI_KEY_ROUNDS (ks); - vnet_crypto_op_t *op = ops[0]; - aes_cbc_key_data_t *kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index]; - u32 n_left = n_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) - { - op += 1; - kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index]; - goto decrypt; - } - - return n_ops; -} - -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 (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; -} - -#define foreach_aesni_cbc_handler_type _(128) _(192) _(256) - -#define _(x) \ -static u32 aesni_ops_dec_aes_cbc_##x \ -(vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \ -{ return aesni_ops_dec_aes_cbc (vm, ops, n_ops, AESNI_KEY_##x); } \ -static u32 aesni_ops_enc_aes_cbc_##x \ -(vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \ -{ return aesni_ops_enc_aes_cbc (vm, ops, n_ops, AESNI_KEY_##x); } \ -static void * aesni_cbc_key_exp_##x (vnet_crypto_key_t *key) \ -{ return aesni_cbc_key_exp (key, AESNI_KEY_##x); } - -foreach_aesni_cbc_handler_type; -#undef _ - -#include <fcntl.h> - -clib_error_t * -#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) -#else -crypto_ia32_aesni_cbc_init_sse42 (vlib_main_t * vm) -#endif -{ - crypto_ia32_main_t *cm = &crypto_ia32_main; - crypto_ia32_per_thread_data_t *ptd; - clib_error_t *err = 0; - int fd; - - if ((fd = open ("/dev/urandom", O_RDONLY)) < 0) - return clib_error_return_unix (0, "failed to open '/dev/urandom'"); - - /* *INDENT-OFF* */ - vec_foreach (ptd, cm->per_thread_data) - { - for (int i = 0; i < 4; i++) - { - if (read(fd, ptd->cbc_iv, sizeof (ptd->cbc_iv)) != - sizeof (ptd->cbc_iv)) - { - err = clib_error_return_unix (0, "'/dev/urandom' read failure"); - goto error; - } - } - } - /* *INDENT-ON* */ - -#define _(x) \ - vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \ - VNET_CRYPTO_OP_AES_##x##_CBC_ENC, \ - aesni_ops_enc_aes_cbc_##x); \ - vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \ - VNET_CRYPTO_OP_AES_##x##_CBC_DEC, \ - aesni_ops_dec_aes_cbc_##x); \ - cm->key_fn[VNET_CRYPTO_ALG_AES_##x##_CBC] = aesni_cbc_key_exp_##x; - foreach_aesni_cbc_handler_type; -#undef _ - -error: - close (fd); - return err; -} - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |