#ifndef __CR_SK_INET_H__
#define __CR_SK_INET_H__

#include <netinet/tcp.h>

#include "sockets.h"
#include "files.h"
#include "common/list.h"
#include "images/sk-inet.pb-c.h"

#define INET_ADDR_LEN		48 /* max of INET_ADDRSTRLEN and INET6_ADDRSTRLEN */
#ifndef TCP_REPAIR
#define TCP_REPAIR		19      /* TCP sock is under repair right now */
#define TCP_REPAIR_QUEUE	20
#define TCP_QUEUE_SEQ		21
#define TCP_REPAIR_OPTIONS	22
#endif

struct inet_sk_desc {
	struct socket_desc	sd;
	unsigned int		type;
	unsigned int		src_port;
	unsigned int		dst_port;
	unsigned int		state;
	unsigned int		rqlen;
	unsigned int		wqlen; /* sent + unsent data */
	unsigned int		uwqlen; /* unsent data */
	unsigned int		src_addr[4];
	unsigned int		dst_addr[4];
	unsigned short		shutdown;

	int rfd;
	int cpt_reuseaddr;
	struct list_head rlist;
};

struct inet_port;
struct inet_sk_info {
	InetSkEntry *ie;
	struct file_desc d;
	struct inet_port *port;
	/*
	 * This is an fd by which the socket is opened.
	 * It will be carried down to restorer code to
	 * repair-off the socket at the very end.
	 */
	int sk_fd;
	struct list_head rlist;
};

extern int inet_bind(int sk, struct inet_sk_info *);
extern int inet_connect(int sk, struct inet_sk_info *);

#ifdef CR_NOGLIBC
#define setsockopt	sys_setsockopt
#endif
static inline void tcp_repair_off(int fd)
{
	int aux = 0, ret;

	ret = setsockopt(fd, SOL_TCP, TCP_REPAIR, &aux, sizeof(aux));
	if (ret < 0)
		pr_err("Failed to turn off repair mode on socket: %m\n");
}

extern void tcp_locked_conn_add(struct inet_sk_info *);
extern void rst_unlock_tcp_connections(void);
extern void cpt_unlock_tcp_connections(void);

extern int dump_one_tcp(int sk, struct inet_sk_desc *sd);
extern int restore_one_tcp(int sk, struct inet_sk_info *si);

#define SK_EST_PARAM	"tcp-established"
#define SK_INFLIGHT_PARAM "skip-in-flight"

extern int check_tcp(void);

struct task_restore_args;
int prepare_tcp_socks(struct task_restore_args *);

struct rst_tcp_sock {
	int	sk;
	bool	reuseaddr;
};

#endif /* __CR_SK_INET_H__ */
