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/* 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;
}
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