/* SPDX-License-Identifier: GPL-2.0-or-later */

#ifndef _INET_TIMEWAIT_SOCK_
#define _INET_TIMEWAIT_SOCK_

#include <linux/list.h>
#include <linux/timer.h>
#include <linux/types.h>
#include <linux/workqueue.h>

#include <net/inet_sock.h>
#include <net/sock.h>
#include <net/tcp_states.h>
#include <net/timewait_sock.h>

#include <linux/atomic.h>

struct inet_bind_bucket;


struct inet_timewait_sock {
	
	struct sock_common	__tw_common;
#define tw_family		__tw_common.skc_family
#define tw_state		__tw_common.skc_state
#define tw_reuse		__tw_common.skc_reuse
#define tw_reuseport		__tw_common.skc_reuseport
#define tw_ipv6only		__tw_common.skc_ipv6only
#define tw_bound_dev_if		__tw_common.skc_bound_dev_if
#define tw_node			__tw_common.skc_nulls_node
#define tw_bind_node		__tw_common.skc_bind_node
#define tw_refcnt		__tw_common.skc_refcnt
#define tw_tx_queue_mapping	__tw_common.skc_tx_queue_mapping
#define tw_rx_queue_mapping	__tw_common.skc_rx_queue_mapping
#define tw_hash			__tw_common.skc_hash
#define tw_prot			__tw_common.skc_prot
#define tw_net			__tw_common.skc_net
#define tw_daddr        	__tw_common.skc_daddr
#define tw_v6_daddr		__tw_common.skc_v6_daddr
#define tw_rcv_saddr    	__tw_common.skc_rcv_saddr
#define tw_v6_rcv_saddr    	__tw_common.skc_v6_rcv_saddr
#define tw_dport		__tw_common.skc_dport
#define tw_num			__tw_common.skc_num
#define tw_cookie		__tw_common.skc_cookie
#define tw_dr			__tw_common.skc_tw_dr

	__u32			tw_mark;
	unsigned char		tw_substate;
	unsigned char		tw_rcv_wscale;

	
	
	__be16			tw_sport;
	
	unsigned int		tw_transparent  : 1,
				tw_flowlabel	: 20,
				tw_usec_ts	: 1,
				tw_connect_bind	: 1,
				tw_pad		: 1,	
				tw_tos		: 8;
	u32			tw_txhash;
	u32			tw_priority;
	
	u32			tw_entry_stamp;
	struct timer_list	tw_timer;
	struct inet_bind_bucket	*tw_tb;
	struct inet_bind2_bucket	*tw_tb2;
#if IS_ENABLED(CONFIG_INET_PSP)
	struct psp_assoc __rcu	  *psp_assoc;
#endif
#ifdef CONFIG_SOCK_VALIDATE_XMIT
	struct sk_buff*		(*tw_validate_xmit_skb)(struct sock *sk,
							struct net_device *dev,
							struct sk_buff *skb);
#endif
};
#define tw_tclass tw_tos

static inline struct inet_timewait_sock *inet_twsk(const struct sock *sk)
{
	return (struct inet_timewait_sock *)sk;
}

void inet_twsk_free(struct inet_timewait_sock *tw);
void inet_twsk_put(struct inet_timewait_sock *tw);

void inet_twsk_bind_unhash(struct inet_timewait_sock *tw,
			   struct inet_hashinfo *hashinfo);

struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk,
					   struct inet_timewait_death_row *dr,
					   const int state);

void inet_twsk_hashdance_schedule(struct inet_timewait_sock *tw,
				  struct sock *sk,
				  struct inet_hashinfo *hashinfo,
				  int timeo);

void __inet_twsk_schedule(struct inet_timewait_sock *tw, int timeo,
			  bool rearm);

static inline void inet_twsk_reschedule(struct inet_timewait_sock *tw, int timeo)
{
	__inet_twsk_schedule(tw, timeo, true);
}

void inet_twsk_deschedule_put(struct inet_timewait_sock *tw);

void inet_twsk_purge(struct inet_hashinfo *hashinfo);

static inline
struct net *twsk_net(const struct inet_timewait_sock *twsk)
{
	return read_pnet(&twsk->tw_net);
}

static inline
void twsk_net_set(struct inet_timewait_sock *twsk, struct net *net)
{
	write_pnet(&twsk->tw_net, net);
}
#endif	
