#ifndef INTERNAL_H

#define INTERNAL_H 1

#include "config.h"

#include <stdint.h>

#include <stdbool.h>

#ifdef HAVE_VISIBILITY_HIDDEN

#	define EXPORT_SYMBOL __attribute__((visibility("default")))

#else

#	define EXPORT_SYMBOL

#endif

struct iphdr;

struct ip6_hdr;

uint16_t nfq_checksum(uint32_t sum, uint16_t *buf, int size);

uint16_t nfq_checksum_tcpudp_ipv4(struct iphdr *iph, uint16_t protonum);

uint16_t nfq_checksum_tcpudp_ipv6(struct ip6_hdr *ip6h, void *transport_hdr,

				  uint16_t protonum);

struct pkt_buff {

	uint8_t *mac_header;

	uint8_t *network_header;

	uint8_t *transport_header;

	uint8_t *data;

	uint32_t len;

	uint32_t data_len;

	bool	mangled;

};

static inline uint8_t *pktb_tail(struct pkt_buff *pktb)

{

	return pktb->data + pktb->len;

}

#endif