DPDK  17.05.2
rte_net_crc.h
1 /*-
2  * BSD LICENSE
3  *
4  * Copyright(c) 2017 Intel Corporation.
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13  * * Redistributions in binary form must reproduce the above copyright
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21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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32  */
33 
34 #ifndef _RTE_NET_CRC_H_
35 #define _RTE_NET_CRC_H_
36 
37 #include <stdint.h>
38 
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
42 
44 #define CRC32_ETH_POLYNOMIAL 0x04c11db7UL
45 #define CRC16_CCITT_POLYNOMIAL 0x1021U
46 
47 #define CRC_LUT_SIZE 256
48 
50 enum rte_net_crc_type {
51  RTE_NET_CRC16_CCITT = 0,
52  RTE_NET_CRC32_ETH,
53  RTE_NET_CRC_REQS
54 };
55 
57 enum rte_net_crc_alg {
58  RTE_NET_CRC_SCALAR = 0,
59  RTE_NET_CRC_SSE42,
60 };
61 
72 void
73 rte_net_crc_set_alg(enum rte_net_crc_alg alg);
74 
88 uint32_t
89 rte_net_crc_calc(const void *data,
90  uint32_t data_len,
91  enum rte_net_crc_type type);
92 
93 #ifdef __cplusplus
94 }
95 #endif
96 
97 
98 #endif /* _RTE_NET_CRC_H_ */