//
// Created by xajhuang on 2023/3/17.
//

#ifndef VCPE_VXLAN_H
#define VCPE_VXLAN_H
#ifdef __cplusplus
extern "C" {
#endif

#include <netinet/ip.h>
#include <netinet/udp.h>
#include <linux/if_ether.h>
#include "common.h"

#pragma pack(push)
#pragma pack(1)

typedef struct vxlan_hdr {
    U8  flags;
    U8  res1;
    U8  res2;
    U8  res3;
    U32 vni;
} VXLAN_HDR, *PVXLAN_HDR;

typedef struct qinq_hdr {
#if __BYTE_ORDER == __LITTLE_ENDIAN
    U32 priority : 3;
    U32 dei : 1;
    U32 id : 12;
#elif __BYTE_ORDER == __BIG_ENDIAN
    U32 id : 12;
    U32 dei : 1;
    U32 priority : 3;
#else
#error "Please fix <bits/endian.h>"
#endif
} QINQ_HDR, *PQINQ_HDR;

typedef struct {
    struct ethhdr    eth;
    struct iphdr     ip;
    struct udphdr    udp;
    struct vxlan_hdr vxlan;
    struct ethhdr    eth_in;
    struct qinq_hdr  qinq;
} VXLAN_PKG_HDR, *PVXLAN_PKG_HDR;

#pragma pack(pop)

#ifdef __cplusplus
}
#endif
#endif    //VCPE_VXLAN_H