67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2020 Mellanox Technologies, Ltd
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*/
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#ifndef _RTE_GENEVE_H_
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#define _RTE_GENEVE_H_
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/**
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* @file
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*
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* GENEVE-related definitions
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*/
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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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/** GENEVE default port. */
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#define RTE_GENEVE_DEFAULT_PORT 6081
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/**
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* GENEVE protocol header. (draft-ietf-nvo3-geneve-09)
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* Contains:
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* 2-bits version (must be 0).
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* 6-bits option length in four byte multiples, not including the eight
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* bytes of the fixed tunnel header.
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* 1-bit control packet.
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* 1-bit critical options in packet.
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* 6-bits reserved
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* 16-bits Protocol Type. The protocol data unit after the Geneve header
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* following the EtherType convention. Ethernet itself is represented by
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* the value 0x6558.
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* 24-bits Virtual Network Identifier (VNI). Virtual network unique identified.
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* 8-bits reserved bits (must be 0 on transmission and ignored on receipt).
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* More-bits (optional) variable length options.
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*/
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__extension__
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struct rte_geneve_hdr {
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#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
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uint8_t ver:2; /**< Version. */
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uint8_t opt_len:6; /**< Options length. */
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uint8_t oam:1; /**< Control packet. */
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uint8_t critical:1; /**< Critical packet. */
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uint8_t reserved1:6; /**< Reserved. */
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#else
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uint8_t opt_len:6; /**< Options length. */
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uint8_t ver:2; /**< Version. */
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uint8_t reserved1:6; /**< Reserved. */
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uint8_t critical:1; /**< Critical packet. */
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uint8_t oam:1; /**< Control packet. */
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#endif
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rte_be16_t proto; /**< Protocol type. */
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uint8_t vni[3]; /**< Virtual network identifier. */
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uint8_t reserved2; /**< Reserved. */
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uint32_t opts[]; /**< Variable length options. */
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} __rte_packed;
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/* GENEVE ETH next protocol types */
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#define RTE_GENEVE_TYPE_ETH 0x6558 /**< Ethernet Protocol. */
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#ifdef __cplusplus
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}
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#endif
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#endif /* RTE_GENEVE_H_ */
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