1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2020 Mellanox Technologies, Ltd 3 */ 4 5 #ifndef _RTE_GENEVE_H_ 6 #define _RTE_GENEVE_H_ 7 8 /** 9 * @file 10 * 11 * GENEVE-related definitions 12 */ 13 #include <stdint.h> 14 15 #include <rte_byteorder.h> 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 /** GENEVE default port. */ 22 #define RTE_GENEVE_DEFAULT_PORT 6081 23 24 /** 25 * GENEVE protocol header. (draft-ietf-nvo3-geneve-09) 26 * Contains: 27 * 2-bits version (must be 0). 28 * 6-bits option length in four byte multiples, not including the eight 29 * bytes of the fixed tunnel header. 30 * 1-bit control packet. 31 * 1-bit critical options in packet. 32 * 6-bits reserved 33 * 16-bits Protocol Type. The protocol data unit after the Geneve header 34 * following the EtherType convention. Ethernet itself is represented by 35 * the value 0x6558. 36 * 24-bits Virtual Network Identifier (VNI). Virtual network unique identified. 37 * 8-bits reserved bits (must be 0 on transmission and ignored on receipt). 38 * More-bits (optional) variable length options. 39 */ 40 __extension__ 41 struct rte_geneve_hdr { 42 #if RTE_BYTE_ORDER == RTE_BIG_ENDIAN 43 uint8_t ver:2; /**< Version. */ 44 uint8_t opt_len:6; /**< Options length. */ 45 uint8_t oam:1; /**< Control packet. */ 46 uint8_t critical:1; /**< Critical packet. */ 47 uint8_t reserved1:6; /**< Reserved. */ 48 #else 49 uint8_t opt_len:6; /**< Options length. */ 50 uint8_t ver:2; /**< Version. */ 51 uint8_t reserved1:6; /**< Reserved. */ 52 uint8_t critical:1; /**< Critical packet. */ 53 uint8_t oam:1; /**< Control packet. */ 54 #endif 55 rte_be16_t proto; /**< Protocol type. */ 56 uint8_t vni[3]; /**< Virtual network identifier. */ 57 uint8_t reserved2; /**< Reserved. */ 58 uint32_t opts[]; /**< Variable length options. */ 59 } __rte_packed; 60 61 /* GENEVE ETH next protocol types */ 62 #define RTE_GENEVE_TYPE_ETH 0x6558 /**< Ethernet Protocol. */ 63 64 #ifdef __cplusplus 65 } 66 #endif 67 68 #endif /* RTE_GENEVE_H_ */ 69