#ifndef ETHERLIB_IGMP_PACKET_H
#define ETHERLIB_IGMP_PACKET_H

#include <stdint.h>
#include "ipv4_types.h"
#include "ethernet_frame.h"

#define ETH_IGMP_PACKET_CLASS (0x0002)
#define ETH_IGMP_HEADER_SIZE (8)

// IGMPv2 is implemented!

typedef enum {
    IGMP_MT_MEMBERSHIP_QUERY = 0x11,
    IGMP_MT_MEMBERSHIP_REPORT = 0x16,
    IGMP_MT_LEAVE_GROUP = 0x17,
} IgmpMsgType;

/**
 * IGMP packet properties.
 */
typedef struct {
    PcktPropsHeader

    uint8_t type; ///< IGMP message type
    uint8_t maxRespTime; ///< Maximum response time in 1/10 seconds
    uint16_t checksum; ///< Checksum for the entire packet
    ip4_addr groupAddr; ///< Group address
} IgmpProps;

/**
 * Insert IGMP header.
 * @param hdr pointer to message header
 * @param headers linked list of recursively encapsulated packet headers
 */
void insert_igmp_header(uint8_t * hdr, const PcktHeaderElement * headers);

/**
 * Parse IGMP packet.
 * @param hdr pointer to the beginning of the IGMP header
 * @param size size of processable buffer area
 * @param pcktHdrLe linket list of packet headers
 * @param intf Ethernet interface
 * @return always 0
 */
int parse_igmp(const uint8_t *hdr, uint32_t size, PcktHeaderElement *pcktHdrLe, struct EthInterface_ *intf, PcktProcFnPassbackData *pb);

#endif //ETHERLIB_IGMP_PACKET_H