zep.h

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/*
 * SPDX-FileCopyrightText: 2016 Freie Universität Berlin
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#include <stdint.h>
 
#include "byteorder.h"
#include "compiler_hints.h"
#include "net/ntp_packet.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define ZEP_PORT_DEFAULT        (17754) 

#define ZEP_V2_TYPE_DATA        (1)

#define ZEP_V2_TYPE_ACK         (2)

#define ZEP_LENGTH_MASK         (0x7f)

typedef struct __attribute__((packed)) {
    NONSTRING
    char preamble[2];       
    uint8_t version;        
} zep_hdr_t;

typedef struct __attribute__((packed)) {
    zep_hdr_t hdr;          
    uint8_t chan;           
    network_uint16_t dev;   
    uint8_t lqi_mode;       
    uint8_t lqi_val;        
    uint8_t resv[7];        
    uint8_t length;         
} zep_v1_hdr_t;

typedef struct __attribute__((packed)) {
    zep_hdr_t hdr;          
    uint8_t type;           
    uint8_t chan;           
    network_uint16_t dev;   
    uint8_t lqi_mode;       
    uint8_t lqi_val;        
    ntp_timestamp_t time;   
    network_uint32_t seq;   
    uint8_t resv[10];       
    uint8_t length;         
} zep_v2_data_hdr_t;

typedef struct __attribute__((packed)) {
    zep_hdr_t hdr;          
    uint8_t type;           
    network_uint32_t seq;   
} zep_v2_ack_hdr_t;
 
#ifdef __cplusplus
}
#endif