diff options
Diffstat (limited to 'src/plugins/crypto_native/aes_ctr.c')
| -rw-r--r-- | src/plugins/crypto_native/aes_ctr.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/plugins/crypto_native/aes_ctr.c b/src/plugins/crypto_native/aes_ctr.c new file mode 100644 index 00000000000..3a219510419 --- /dev/null +++ b/src/plugins/crypto_native/aes_ctr.c @@ -0,0 +1,112 @@ +/* SPDX-License-Identifier: Apache-2.0 + * Copyright(c) 2024 Cisco Systems, Inc. + */ + +#include <vlib/vlib.h> +#include <vnet/plugin/plugin.h> +#include <vnet/crypto/crypto.h> +#include <crypto_native/crypto_native.h> +#include <vppinfra/crypto/aes_ctr.h> + +#if __GNUC__ > 4 && !__clang__ && CLIB_DEBUG == 0 +#pragma GCC optimize("O3") +#endif + +static_always_inline u32 +aes_ops_aes_ctr (vlib_main_t *vm, vnet_crypto_op_t *ops[], u32 n_ops, + vnet_crypto_op_chunk_t *chunks, aes_key_size_t ks, + int maybe_chained) +{ + crypto_native_main_t *cm = &crypto_native_main; + vnet_crypto_op_t *op = ops[0]; + aes_ctr_key_data_t *kd; + aes_ctr_ctx_t ctx; + u32 n_left = n_ops; + +next: + kd = (aes_ctr_key_data_t *) cm->key_data[op->key_index]; + + clib_aes_ctr_init (&ctx, kd, op->iv, ks); + if (op->flags & VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS) + { + vnet_crypto_op_chunk_t *chp = chunks + op->chunk_index; + for (int j = 0; j < op->n_chunks; j++, chp++) + clib_aes_ctr_transform (&ctx, chp->src, chp->dst, chp->len, ks); + } + else + clib_aes_ctr_transform (&ctx, op->src, op->dst, op->len, ks); + + op->status = VNET_CRYPTO_OP_STATUS_COMPLETED; + + if (--n_left) + { + op += 1; + goto next; + } + + return n_ops; +} + +static_always_inline void * +aes_ctr_key_exp (vnet_crypto_key_t *key, aes_key_size_t ks) +{ + aes_ctr_key_data_t *kd; + + kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES); + + clib_aes_ctr_key_expand (kd, key->data, ks); + + return kd; +} + +#define foreach_aes_ctr_handler_type _ (128) _ (192) _ (256) + +#define _(x) \ + static u32 aes_ops_aes_ctr_##x (vlib_main_t *vm, vnet_crypto_op_t *ops[], \ + u32 n_ops) \ + { \ + return aes_ops_aes_ctr (vm, ops, n_ops, 0, AES_KEY_##x, 0); \ + } \ + static u32 aes_ops_aes_ctr_##x##_chained ( \ + vlib_main_t *vm, vnet_crypto_op_t *ops[], vnet_crypto_op_chunk_t *chunks, \ + u32 n_ops) \ + { \ + return aes_ops_aes_ctr (vm, ops, n_ops, chunks, AES_KEY_##x, 1); \ + } \ + static void *aes_ctr_key_exp_##x (vnet_crypto_key_t *key) \ + { \ + return aes_ctr_key_exp (key, AES_KEY_##x); \ + } + +foreach_aes_ctr_handler_type; +#undef _ + +clib_error_t * +#if defined(__VAES__) && defined(__AVX512F__) +crypto_native_aes_ctr_init_icl (vlib_main_t *vm) +#elif defined(__VAES__) +crypto_native_aes_ctr_init_adl (vlib_main_t *vm) +#elif __AVX512F__ +crypto_native_aes_ctr_init_skx (vlib_main_t *vm) +#elif __AVX2__ +crypto_native_aes_ctr_init_hsw (vlib_main_t *vm) +#elif __aarch64__ +crypto_native_aes_ctr_init_neon (vlib_main_t *vm) +#else +crypto_native_aes_ctr_init_slm (vlib_main_t *vm) +#endif +{ + crypto_native_main_t *cm = &crypto_native_main; + +#define _(x) \ + vnet_crypto_register_ops_handlers ( \ + vm, cm->crypto_engine_index, VNET_CRYPTO_OP_AES_##x##_CTR_ENC, \ + aes_ops_aes_ctr_##x, aes_ops_aes_ctr_##x##_chained); \ + vnet_crypto_register_ops_handlers ( \ + vm, cm->crypto_engine_index, VNET_CRYPTO_OP_AES_##x##_CTR_DEC, \ + aes_ops_aes_ctr_##x, aes_ops_aes_ctr_##x##_chained); \ + cm->key_fn[VNET_CRYPTO_ALG_AES_##x##_CTR] = aes_ctr_key_exp_##x; + foreach_aes_ctr_handler_type; +#undef _ + return 0; +} |