17a937baed
This patch enables the optimized calculation of CRC32-Ethernet and CRC16-CCITT using the AVX512 and VPCLMULQDQ instruction sets. This CRC implementation is built if the compiler supports the required instruction sets. It is selected at run-time if the host CPU, again, supports the required instruction sets. Signed-off-by: Mairtin o Loingsigh <mairtin.oloingsigh@intel.com> Signed-off-by: David Coyle <david.coyle@intel.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com> Reviewed-by: Jasvinder Singh <jasvinder.singh@intel.com> Reviewed-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
68 lines
1.3 KiB
C
68 lines
1.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2017-2020 Intel Corporation
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*/
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#ifndef _RTE_NET_CRC_H_
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#define _RTE_NET_CRC_H_
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** CRC types */
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enum rte_net_crc_type {
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RTE_NET_CRC16_CCITT = 0,
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RTE_NET_CRC32_ETH,
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RTE_NET_CRC_REQS
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};
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/** CRC compute algorithm */
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enum rte_net_crc_alg {
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RTE_NET_CRC_SCALAR = 0,
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RTE_NET_CRC_SSE42,
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RTE_NET_CRC_NEON,
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RTE_NET_CRC_AVX512,
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};
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/**
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* This API set the CRC computation algorithm (i.e. scalar version,
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* x86 64-bit sse4.2 intrinsic version, etc.) and internal data
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* structure.
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*
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* @param alg
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* This parameter is used to select the CRC implementation version.
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* - RTE_NET_CRC_SCALAR
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* - RTE_NET_CRC_SSE42 (Use 64-bit SSE4.2 intrinsic)
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* - RTE_NET_CRC_NEON (Use ARM Neon intrinsic)
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* - RTE_NET_CRC_AVX512 (Use 512-bit AVX intrinsic)
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*/
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void
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rte_net_crc_set_alg(enum rte_net_crc_alg alg);
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/**
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* CRC compute API
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*
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* @param data
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* Pointer to the packet data for CRC computation
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* @param data_len
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* Data length for CRC computation
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* @param type
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* CRC type (enum rte_net_crc_type)
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*
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* @return
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* CRC value
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*/
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uint32_t
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rte_net_crc_calc(const void *data,
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uint32_t data_len,
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enum rte_net_crc_type type);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RTE_NET_CRC_H_ */
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