9caef2a351
Type: feature Change-Id: I7ef3277edaeb266fbd3c8c9355d4443002ed2311 Signed-off-by: Damjan Marion <damarion@cisco.com>
332 lines
9.8 KiB
C
332 lines
9.8 KiB
C
/*
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*------------------------------------------------------------------
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* Copyright (c) 2019 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*------------------------------------------------------------------
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*/
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#include <vlib/vlib.h>
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#include <vnet/plugin/plugin.h>
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#include <vnet/crypto/crypto.h>
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#include <crypto_native/crypto_native.h>
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#include <vppinfra/crypto/aes_cbc.h>
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#if __GNUC__ > 4 && !__clang__ && CLIB_DEBUG == 0
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#pragma GCC optimize ("O3")
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#endif
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#if defined(__VAES__) && defined(__AVX512F__)
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#define u8xN u8x64
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#define u32xN u32x16
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#define u32xN_min_scalar u32x16_min_scalar
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#define u32xN_is_all_zero u32x16_is_all_zero
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#define u32xN_splat u32x16_splat
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#elif defined(__VAES__)
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#define u8xN u8x32
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#define u32xN u32x8
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#define u32xN_min_scalar u32x8_min_scalar
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#define u32xN_is_all_zero u32x8_is_all_zero
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#define u32xN_splat u32x8_splat
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#else
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#define u8xN u8x16
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#define u32xN u32x4
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#define u32xN_min_scalar u32x4_min_scalar
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#define u32xN_is_all_zero u32x4_is_all_zero
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#define u32xN_splat u32x4_splat
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#endif
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static_always_inline u32
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aes_ops_enc_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[],
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u32 n_ops, aes_key_size_t ks)
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{
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crypto_native_main_t *cm = &crypto_native_main;
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int rounds = AES_KEY_ROUNDS (ks);
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u8 placeholder[8192];
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u32 i, j, count, n_left = n_ops;
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u32xN placeholder_mask = { };
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u32xN len = { };
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vnet_crypto_key_index_t key_index[N_AES_BYTES];
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u8 *src[N_AES_BYTES] = {};
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u8 *dst[N_AES_BYTES] = {};
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u8xN r[4] = {};
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u8xN k[15][4] = {};
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for (i = 0; i < N_AES_BYTES; i++)
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key_index[i] = ~0;
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more:
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for (i = 0; i < N_AES_BYTES; i++)
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if (len[i] == 0)
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{
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if (n_left == 0)
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{
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/* no more work to enqueue, so we are enqueueing placeholder buffer */
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src[i] = dst[i] = placeholder;
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len[i] = sizeof (placeholder);
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placeholder_mask[i] = 0;
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}
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else
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{
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u8x16 t = aes_block_load (ops[0]->iv);
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((u8x16 *) r)[i] = t;
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src[i] = ops[0]->src;
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dst[i] = ops[0]->dst;
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len[i] = ops[0]->len;
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placeholder_mask[i] = ~0;
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if (key_index[i] != ops[0]->key_index)
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{
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aes_cbc_key_data_t *kd;
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key_index[i] = ops[0]->key_index;
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kd = (aes_cbc_key_data_t *) cm->key_data[key_index[i]];
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for (j = 0; j < rounds + 1; j++)
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((u8x16 *) k[j])[i] = kd->encrypt_key[j];
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}
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ops[0]->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
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n_left--;
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ops++;
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}
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}
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count = u32xN_min_scalar (len);
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ASSERT (count % 16 == 0);
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for (i = 0; i < count; i += 16)
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{
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#if defined(__VAES__) && defined(__AVX512F__)
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r[0] = u8x64_xor3 (r[0], aes_block_load_x4 (src, i), k[0][0]);
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r[1] = u8x64_xor3 (r[1], aes_block_load_x4 (src + 4, i), k[0][1]);
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r[2] = u8x64_xor3 (r[2], aes_block_load_x4 (src + 8, i), k[0][2]);
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r[3] = u8x64_xor3 (r[3], aes_block_load_x4 (src + 12, i), k[0][3]);
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for (j = 1; j < rounds; j++)
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{
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r[0] = aes_enc_round_x4 (r[0], k[j][0]);
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r[1] = aes_enc_round_x4 (r[1], k[j][1]);
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r[2] = aes_enc_round_x4 (r[2], k[j][2]);
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r[3] = aes_enc_round_x4 (r[3], k[j][3]);
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}
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r[0] = aes_enc_last_round_x4 (r[0], k[j][0]);
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r[1] = aes_enc_last_round_x4 (r[1], k[j][1]);
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r[2] = aes_enc_last_round_x4 (r[2], k[j][2]);
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r[3] = aes_enc_last_round_x4 (r[3], k[j][3]);
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aes_block_store_x4 (dst, i, r[0]);
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aes_block_store_x4 (dst + 4, i, r[1]);
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aes_block_store_x4 (dst + 8, i, r[2]);
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aes_block_store_x4 (dst + 12, i, r[3]);
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#elif defined(__VAES__)
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r[0] = u8x32_xor3 (r[0], aes_block_load_x2 (src, i), k[0][0]);
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r[1] = u8x32_xor3 (r[1], aes_block_load_x2 (src + 2, i), k[0][1]);
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r[2] = u8x32_xor3 (r[2], aes_block_load_x2 (src + 4, i), k[0][2]);
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r[3] = u8x32_xor3 (r[3], aes_block_load_x2 (src + 6, i), k[0][3]);
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for (j = 1; j < rounds; j++)
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{
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r[0] = aes_enc_round_x2 (r[0], k[j][0]);
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r[1] = aes_enc_round_x2 (r[1], k[j][1]);
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r[2] = aes_enc_round_x2 (r[2], k[j][2]);
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r[3] = aes_enc_round_x2 (r[3], k[j][3]);
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}
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r[0] = aes_enc_last_round_x2 (r[0], k[j][0]);
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r[1] = aes_enc_last_round_x2 (r[1], k[j][1]);
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r[2] = aes_enc_last_round_x2 (r[2], k[j][2]);
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r[3] = aes_enc_last_round_x2 (r[3], k[j][3]);
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aes_block_store_x2 (dst, i, r[0]);
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aes_block_store_x2 (dst + 2, i, r[1]);
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aes_block_store_x2 (dst + 4, i, r[2]);
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aes_block_store_x2 (dst + 6, i, r[3]);
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#else
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#if __x86_64__
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r[0] = u8x16_xor3 (r[0], aes_block_load (src[0] + i), k[0][0]);
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r[1] = u8x16_xor3 (r[1], aes_block_load (src[1] + i), k[0][1]);
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r[2] = u8x16_xor3 (r[2], aes_block_load (src[2] + i), k[0][2]);
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r[3] = u8x16_xor3 (r[3], aes_block_load (src[3] + i), k[0][3]);
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for (j = 1; j < rounds; j++)
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{
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r[0] = aes_enc_round_x1 (r[0], k[j][0]);
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r[1] = aes_enc_round_x1 (r[1], k[j][1]);
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r[2] = aes_enc_round_x1 (r[2], k[j][2]);
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r[3] = aes_enc_round_x1 (r[3], k[j][3]);
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}
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r[0] = aes_enc_last_round_x1 (r[0], k[j][0]);
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r[1] = aes_enc_last_round_x1 (r[1], k[j][1]);
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r[2] = aes_enc_last_round_x1 (r[2], k[j][2]);
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r[3] = aes_enc_last_round_x1 (r[3], k[j][3]);
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aes_block_store (dst[0] + i, r[0]);
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aes_block_store (dst[1] + i, r[1]);
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aes_block_store (dst[2] + i, r[2]);
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aes_block_store (dst[3] + i, r[3]);
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#else
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r[0] ^= aes_block_load (src[0] + i);
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r[1] ^= aes_block_load (src[1] + i);
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r[2] ^= aes_block_load (src[2] + i);
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r[3] ^= aes_block_load (src[3] + i);
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for (j = 0; j < rounds - 1; j++)
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{
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r[0] = vaesmcq_u8 (vaeseq_u8 (r[0], k[j][0]));
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r[1] = vaesmcq_u8 (vaeseq_u8 (r[1], k[j][1]));
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r[2] = vaesmcq_u8 (vaeseq_u8 (r[2], k[j][2]));
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r[3] = vaesmcq_u8 (vaeseq_u8 (r[3], k[j][3]));
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}
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r[0] = vaeseq_u8 (r[0], k[j][0]) ^ k[rounds][0];
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r[1] = vaeseq_u8 (r[1], k[j][1]) ^ k[rounds][1];
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r[2] = vaeseq_u8 (r[2], k[j][2]) ^ k[rounds][2];
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r[3] = vaeseq_u8 (r[3], k[j][3]) ^ k[rounds][3];
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aes_block_store (dst[0] + i, r[0]);
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aes_block_store (dst[1] + i, r[1]);
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aes_block_store (dst[2] + i, r[2]);
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aes_block_store (dst[3] + i, r[3]);
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#endif
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#endif
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}
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len -= u32xN_splat (count);
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for (i = 0; i < N_AES_BYTES; i++)
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{
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src[i] += count;
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dst[i] += count;
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}
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if (n_left > 0)
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goto more;
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if (!u32xN_is_all_zero (len & placeholder_mask))
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goto more;
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return n_ops;
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}
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static_always_inline u32
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aes_ops_dec_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[],
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u32 n_ops, aes_key_size_t ks)
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{
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crypto_native_main_t *cm = &crypto_native_main;
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int rounds = AES_KEY_ROUNDS (ks);
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vnet_crypto_op_t *op = ops[0];
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aes_cbc_key_data_t *kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index];
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u32 n_left = n_ops;
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ASSERT (n_ops >= 1);
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decrypt:
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#if defined(__VAES__) && defined(__AVX512F__)
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aes4_cbc_dec (kd->decrypt_key, (u8x64u *) op->src, (u8x64u *) op->dst,
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(u8x16u *) op->iv, op->len, rounds);
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#elif defined(__VAES__)
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aes2_cbc_dec (kd->decrypt_key, (u8x32u *) op->src, (u8x32u *) op->dst,
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(u8x16u *) op->iv, op->len, rounds);
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#else
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aes_cbc_dec (kd->decrypt_key, (u8x16u *) op->src, (u8x16u *) op->dst,
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(u8x16u *) op->iv, op->len, rounds);
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#endif
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op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
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if (--n_left)
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{
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op += 1;
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kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index];
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goto decrypt;
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}
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return n_ops;
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}
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#define foreach_aes_cbc_handler_type _(128) _(192) _(256)
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#define _(x) \
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static u32 aes_ops_dec_aes_cbc_##x \
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(vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
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{ return aes_ops_dec_aes_cbc (vm, ops, n_ops, AES_KEY_##x); } \
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static u32 aes_ops_enc_aes_cbc_##x \
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(vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
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{ return aes_ops_enc_aes_cbc (vm, ops, n_ops, AES_KEY_##x); } \
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foreach_aes_cbc_handler_type;
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#undef _
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static void *
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aes_cbc_key_exp_128 (vnet_crypto_key_t *key)
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{
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aes_cbc_key_data_t *kd;
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kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES);
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clib_aes128_cbc_key_expand (kd, key->data);
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return kd;
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}
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static void *
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aes_cbc_key_exp_192 (vnet_crypto_key_t *key)
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{
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aes_cbc_key_data_t *kd;
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kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES);
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clib_aes192_cbc_key_expand (kd, key->data);
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return kd;
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}
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static void *
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aes_cbc_key_exp_256 (vnet_crypto_key_t *key)
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{
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aes_cbc_key_data_t *kd;
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kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES);
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clib_aes256_cbc_key_expand (kd, key->data);
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return kd;
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}
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#include <fcntl.h>
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clib_error_t *
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#if defined(__VAES__) && defined(__AVX512F__)
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crypto_native_aes_cbc_init_icl (vlib_main_t *vm)
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#elif defined(__VAES__)
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crypto_native_aes_cbc_init_adl (vlib_main_t *vm)
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#elif __AVX512F__
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crypto_native_aes_cbc_init_skx (vlib_main_t * vm)
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#elif __aarch64__
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crypto_native_aes_cbc_init_neon (vlib_main_t * vm)
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#elif __AVX2__
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crypto_native_aes_cbc_init_hsw (vlib_main_t * vm)
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#else
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crypto_native_aes_cbc_init_slm (vlib_main_t * vm)
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#endif
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{
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crypto_native_main_t *cm = &crypto_native_main;
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#define _(x) \
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vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \
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VNET_CRYPTO_OP_AES_##x##_CBC_ENC, \
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aes_ops_enc_aes_cbc_##x); \
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vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \
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VNET_CRYPTO_OP_AES_##x##_CBC_DEC, \
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aes_ops_dec_aes_cbc_##x); \
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cm->key_fn[VNET_CRYPTO_ALG_AES_##x##_CBC] = aes_cbc_key_exp_##x;
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foreach_aes_cbc_handler_type;
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#undef _
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return 0;
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}
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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