--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2020 Mellanox Technologies, Ltd
+ */
+
+#ifndef _RTE_ECPRI_H_
+#define _RTE_ECPRI_H_
+
+#include <stdint.h>
+#include <rte_byteorder.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * eCPRI Protocol Revision 1.0, 1.1, 1.2, 2.0: 0001b
+ * Other values are reserved for future
+ */
+#define RTE_ECPRI_REV_UP_TO_20 1
+
+/*
+ * eCPRI message types in specifications
+ * IWF* types will only be supported from rev.2
+ * 12-63: Reserved for future revision
+ * 64-255: Vendor Specific
+ */
+#define RTE_ECPRI_MSG_TYPE_IQ_DATA 0
+#define RTE_ECPRI_MSG_TYPE_BIT_SEQ 1
+#define RTE_ECPRI_MSG_TYPE_RTC_CTRL 2
+#define RTE_ECPRI_MSG_TYPE_GEN_DATA 3
+#define RTE_ECPRI_MSG_TYPE_RM_ACC 4
+#define RTE_ECPRI_MSG_TYPE_DLY_MSR 5
+#define RTE_ECPRI_MSG_TYPE_RMT_RST 6
+#define RTE_ECPRI_MSG_TYPE_EVT_IND 7
+#define RTE_ECPRI_MSG_TYPE_IWF_UP 8
+#define RTE_ECPRI_MSG_TYPE_IWF_OPT 9
+#define RTE_ECPRI_MSG_TYPE_IWF_MAP 10
+#define RTE_ECPRI_MSG_TYPE_IWF_DCTRL 11
+
+/*
+ * Event Type of Message Type #7: Event Indication
+ * 0x00: Fault(s) Indication
+ * 0x01: Fault(s) Indication Acknowledge
+ * 0x02: Notification(s) Indication
+ * 0x03: Synchronization Request
+ * 0x04: Synchronization Acknowledge
+ * 0x05: Synchronization End Indication
+ * 0x06...0xFF: Reserved
+ */
+#define RTE_ECPRI_EVT_IND_FAULT_IND 0x00
+#define RTE_ECPRI_EVT_IND_FAULT_ACK 0x01
+#define RTE_ECPRI_EVT_IND_NTFY_IND 0x02
+#define RTE_ECPRI_EVT_IND_SYNC_REQ 0x03
+#define RTE_ECPRI_EVT_IND_SYNC_ACK 0x04
+#define RTE_ECPRI_EVT_IND_SYNC_END 0x05
+
+/**
+ * eCPRI Common Header
+ */
+RTE_STD_C11
+struct rte_ecpri_common_hdr {
+ union {
+ rte_be32_t u32; /**< 4B common header in BE */
+ struct {
+#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
+ uint32_t size:16; /**< Payload Size */
+ uint32_t type:8; /**< Message Type */
+ uint32_t c:1; /**< Concatenation Indicator */
+ uint32_t res:3; /**< Reserved */
+ uint32_t revision:4; /**< Protocol Revision */
+#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+ uint32_t revision:4; /**< Protocol Revision */
+ uint32_t res:3; /**< Reserved */
+ uint32_t c:1; /**< Concatenation Indicator */
+ uint32_t type:8; /**< Message Type */
+ uint32_t size:16; /**< Payload Size */
+#endif
+ };
+ };
+};
+
+/**
+ * eCPRI Message Header of Type #0: IQ Data
+ */
+struct rte_ecpri_msg_iq_data {
+ rte_be16_t pc_id; /**< Physical channel ID */
+ rte_be16_t seq_id; /**< Sequence ID */
+};
+
+/**
+ * eCPRI Message Header of Type #1: Bit Sequence
+ */
+struct rte_ecpri_msg_bit_seq {
+ rte_be16_t pc_id; /**< Physical channel ID */
+ rte_be16_t seq_id; /**< Sequence ID */
+};
+
+/**
+ * eCPRI Message Header of Type #2: Real-Time Control Data
+ */
+struct rte_ecpri_msg_rtc_ctrl {
+ rte_be16_t rtc_id; /**< Real-Time Control Data ID */
+ rte_be16_t seq_id; /**< Sequence ID */
+};
+
+/**
+ * eCPRI Message Header of Type #3: Generic Data Transfer
+ */
+struct rte_ecpri_msg_gen_data {
+ rte_be32_t pc_id; /**< Physical channel ID */
+ rte_be32_t seq_id; /**< Sequence ID */
+};
+
+/**
+ * eCPRI Message Header of Type #4: Remote Memory Access
+ */
+RTE_STD_C11
+struct rte_ecpri_msg_rm_access {
+#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
+ uint32_t ele_id:16; /**< Element ID */
+ uint32_t rr:4; /**< Req/Resp */
+ uint32_t rw:4; /**< Read/Write */
+ uint32_t rma_id:8; /**< Remote Memory Access ID */
+#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+ uint32_t rma_id:8; /**< Remote Memory Access ID */
+ uint32_t rw:4; /**< Read/Write */
+ uint32_t rr:4; /**< Req/Resp */
+ uint32_t ele_id:16; /**< Element ID */
+#endif
+ uint8_t addr[6]; /**< 48-bits address */
+ rte_be16_t length; /**< number of bytes */
+};
+
+/**
+ * eCPRI Message Header of Type #5: One-Way Delay Measurement
+ */
+struct rte_ecpri_msg_delay_measure {
+ uint8_t msr_id; /**< Measurement ID */
+ uint8_t act_type; /**< Action Type */
+};
+
+/**
+ * eCPRI Message Header of Type #6: Remote Reset
+ */
+struct rte_ecpri_msg_remote_reset {
+ rte_be16_t rst_id; /**< Reset ID */
+ uint8_t rst_op; /**< Reset Code Op */
+};
+
+/**
+ * eCPRI Message Header of Type #7: Event Indication
+ */
+struct rte_ecpri_msg_event_ind {
+ uint8_t evt_id; /**< Event ID */
+ uint8_t evt_type; /**< Event Type */
+ uint8_t seq; /**< Sequence Number */
+ uint8_t number; /**< Number of Faults/Notif */
+};
+
+/**
+ * eCPRI Combined Message Header Format: Common Header + Message Types
+ */
+RTE_STD_C11
+struct rte_ecpri_combined_msg_hdr {
+ struct rte_ecpri_common_hdr common;
+ union {
+ struct rte_ecpri_msg_iq_data type0;
+ struct rte_ecpri_msg_bit_seq type1;
+ struct rte_ecpri_msg_rtc_ctrl type2;
+ struct rte_ecpri_msg_bit_seq type3;
+ struct rte_ecpri_msg_rm_access type4;
+ struct rte_ecpri_msg_delay_measure type5;
+ struct rte_ecpri_msg_remote_reset type6;
+ struct rte_ecpri_msg_event_ind type7;
+ rte_be32_t dummy[3];
+ };
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_ECPRI_H_ */