include/linux/tcp.h - android_kernel_htc_m7 - Gitiles

 /*
  * INET		An implementation of the TCP/IP protocol suite for the LINUX
  *		operating system.  INET is implemented using the  BSD Socket
  *		interface as the means of communication with the user level.
  *
  *		Definitions for the TCP protocol.
  *
  * Version:	@(#)tcp.h	1.0.2	04/28/93
  *
  * Author:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  *
  *		This program is free software; you can redistribute it and/or
  *		modify it under the terms of the GNU General Public License
  *		as published by the Free Software Foundation; either version
  *		2 of the License, or (at your option) any later version.
  */
 #ifndef _LINUX_TCP_H
 #define _LINUX_TCP_H

 #include <linux/types.h>
 #include <asm/byteorder.h>
 #include <linux/socket.h>

 struct tcphdr {
 	__be16	source;
 	__be16	dest;
 	__be32	seq;
 	__be32	ack_seq;
 #if defined(__LITTLE_ENDIAN_BITFIELD)
 	__u16	res1:4,
 		doff:4,
 		fin:1,
 		syn:1,
 		rst:1,
 		psh:1,
 		ack:1,
 		urg:1,
 		ece:1,
 		cwr:1;
 #elif defined(__BIG_ENDIAN_BITFIELD)
 	__u16	doff:4,
 		res1:4,
 		cwr:1,
 		ece:1,
 		urg:1,
 		ack:1,
 		psh:1,
 		rst:1,
 		syn:1,
 		fin:1;
 #else
 #error	"Adjust your <asm/byteorder.h> defines"
 #endif
 	__be16	window;
 	__sum16	check;
 	__be16	urg_ptr;
 };

 union tcp_word_hdr {
 	struct tcphdr hdr;
 	__be32 		  words[5];
 };

 #define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])

 enum {
 	TCP_FLAG_CWR = __constant_htonl(0x00800000),
 	TCP_FLAG_ECE = __constant_htonl(0x00400000),
 	TCP_FLAG_URG = __constant_htonl(0x00200000),
 	TCP_FLAG_ACK = __constant_htonl(0x00100000),
 	TCP_FLAG_PSH = __constant_htonl(0x00080000),
 	TCP_FLAG_RST = __constant_htonl(0x00040000),
 	TCP_FLAG_SYN = __constant_htonl(0x00020000),
 	TCP_FLAG_FIN = __constant_htonl(0x00010000),
 	TCP_RESERVED_BITS = __constant_htonl(0x0F000000),
 	TCP_DATA_OFFSET = __constant_htonl(0xF0000000)
 };

 #define TCP_MSS_DEFAULT		 536U
 #define TCP_MSS_DESIRED		1220U

 #define TCP_NODELAY		1
 #define TCP_MAXSEG		2
 #define TCP_CORK		3
 #define TCP_KEEPIDLE		4
 #define TCP_KEEPINTVL		5
 #define TCP_KEEPCNT		6
 #define TCP_SYNCNT		7
 #define TCP_LINGER2		8
 #define TCP_DEFER_ACCEPT	9
 #define TCP_WINDOW_CLAMP	10
 #define TCP_INFO		11
 #define TCP_QUICKACK		12
 #define TCP_CONGESTION		13
 #define TCP_MD5SIG		14
 #define TCP_COOKIE_TRANSACTIONS	15
 #define TCP_THIN_LINEAR_TIMEOUTS 16
 #define TCP_THIN_DUPACK         17
 #define TCP_USER_TIMEOUT	18

 #define TCPI_OPT_TIMESTAMPS	1
 #define TCPI_OPT_SACK		2
 #define TCPI_OPT_WSCALE		4
 #define TCPI_OPT_ECN		8
 #define TCPI_OPT_ECN_SEEN	16

 enum tcp_ca_state {
 	TCP_CA_Open = 0,
 #define TCPF_CA_Open	(1<<TCP_CA_Open)
 	TCP_CA_Disorder = 1,
 #define TCPF_CA_Disorder (1<<TCP_CA_Disorder)
 	TCP_CA_CWR = 2,
 #define TCPF_CA_CWR	(1<<TCP_CA_CWR)
 	TCP_CA_Recovery = 3,
 #define TCPF_CA_Recovery (1<<TCP_CA_Recovery)
 	TCP_CA_Loss = 4
 #define TCPF_CA_Loss	(1<<TCP_CA_Loss)
 };

 struct tcp_info {
 	__u8	tcpi_state;
 	__u8	tcpi_ca_state;
 	__u8	tcpi_retransmits;
 	__u8	tcpi_probes;
 	__u8	tcpi_backoff;
 	__u8	tcpi_options;
 	__u8	tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
 	__u8    tcpi_count;

 	__u32	tcpi_rto;
 	__u32	tcpi_ato;
 	__u32	tcpi_snd_mss;
 	__u32	tcpi_rcv_mss;

 	__u32	tcpi_unacked;
 	__u32	tcpi_sacked;
 	__u32	tcpi_lost;
 	__u32	tcpi_retrans;
 	__u32	tcpi_fackets;


 	__u32	tcpi_last_data_sent;
 	__u32	tcpi_last_ack_sent;
 	__u32	tcpi_last_data_recv;
 	__u32	tcpi_last_ack_recv;


 	__u32	tcpi_pmtu;
 	__u32	tcpi_rcv_ssthresh;
 	__u32	tcpi_rtt;
 	__u32	tcpi_rttvar;
 	__u32	tcpi_snd_ssthresh;
 	__u32	tcpi_snd_cwnd;
 	__u32	tcpi_advmss;
 	__u32	tcpi_reordering;

 	__u32	tcpi_rcv_rtt;
 	__u32	tcpi_rcv_space;

 	__u32	tcpi_total_retrans;
 };

 #define TCP_MD5SIG_MAXKEYLEN	80

 struct tcp_md5sig {
 	struct __kernel_sockaddr_storage tcpm_addr;
 	__u16	__tcpm_pad1;
 	__u16	tcpm_keylen;
 	__u32	__tcpm_pad2;
 	__u8	tcpm_key[TCP_MD5SIG_MAXKEYLEN];
 };

 #define TCP_COOKIE_MIN		 8
 #define TCP_COOKIE_MAX		16
 #define TCP_COOKIE_PAIR_SIZE	(2*TCP_COOKIE_MAX)

 #define TCP_COOKIE_IN_ALWAYS	(1 << 0)
 #define TCP_COOKIE_OUT_NEVER	(1 << 1)

 #define TCP_S_DATA_IN		(1 << 2)
 #define TCP_S_DATA_OUT		(1 << 3)

 struct tcp_cookie_transactions {
 	__u16	tcpct_flags;
 	__u8	__tcpct_pad1;
 	__u8	tcpct_cookie_desired;
 	__u16	tcpct_s_data_desired;
 	__u16	tcpct_used;
 	__u8	tcpct_value[TCP_MSS_DEFAULT];
 };

 #ifdef __KERNEL__

 #include <linux/skbuff.h>
 #include <linux/dmaengine.h>
 #include <net/sock.h>
 #include <net/inet_connection_sock.h>
 #include <net/inet_timewait_sock.h>

 static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb)
 {
 	return (struct tcphdr *)skb_transport_header(skb);
 }

 static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)
 {
 	return tcp_hdr(skb)->doff * 4;
 }

 static inline unsigned int tcp_optlen(const struct sk_buff *skb)
 {
 	return (tcp_hdr(skb)->doff - 5) * 4;
 }

 struct tcp_sack_block_wire {
 	__be32	start_seq;
 	__be32	end_seq;
 };

 struct tcp_sack_block {
 	u32	start_seq;
 	u32	end_seq;
 };

 #define TCP_SACK_SEEN     (1 << 0)
 #define TCP_FACK_ENABLED  (1 << 1)
 #define TCP_DSACK_SEEN    (1 << 2)

 struct tcp_options_received {
 	long	ts_recent_stamp;
 	u32	ts_recent;
 	u32	rcv_tsval;
 	u32	rcv_tsecr;
 	u16 	saw_tstamp : 1,
 		tstamp_ok : 1,
 		dsack : 1,
 		wscale_ok : 1,
 		sack_ok : 4,
 		snd_wscale : 4,
 		rcv_wscale : 4;
 	u8	cookie_plus:6,
 		cookie_out_never:1,
 		cookie_in_always:1;
 	u8	num_sacks;
 	u16	user_mss;
 	u16	mss_clamp;
 };

 static inline void tcp_clear_options(struct tcp_options_received *rx_opt)
 {
 	rx_opt->tstamp_ok = rx_opt->sack_ok = 0;
 	rx_opt->wscale_ok = rx_opt->snd_wscale = 0;
 	rx_opt->cookie_plus = 0;
 }

 #define TCP_NUM_SACKS 4

 struct tcp_cookie_values;
 struct tcp_request_sock_ops;

 struct tcp_request_sock {
 	struct inet_request_sock 	req;
 #ifdef CONFIG_TCP_MD5SIG

 	const struct tcp_request_sock_ops *af_specific;
 #endif
 	u32				rcv_isn;
 	u32				snt_isn;
 	u32				snt_synack;
 };

 static inline struct tcp_request_sock *tcp_rsk(const struct request_sock *req)
 {
 	return (struct tcp_request_sock *)req;
 }

 struct tcp_sock {

 	struct inet_connection_sock	inet_conn;
 	u16	tcp_header_len;
 	u16	xmit_size_goal_segs;

 	__be32	pred_flags;

  	u32	rcv_nxt;
 	u32	copied_seq;
 	u32	rcv_wup;
  	u32	snd_nxt;

  	u32	snd_una;
  	u32	snd_sml;
 	u32	rcv_tstamp;
 	u32	lsndtime;


 	struct {
 		struct sk_buff_head	prequeue;
 		struct task_struct	*task;
 		struct iovec		*iov;
 		int			memory;
 		int			len;
 #ifdef CONFIG_NET_DMA

 		struct dma_chan		*dma_chan;
 		int			wakeup;
 		struct dma_pinned_list	*pinned_list;
 		dma_cookie_t		dma_cookie;
 #endif
 	} ucopy;

 	u32	snd_wl1;
 	u32	snd_wnd;
 	u32	max_window;
 	u32	mss_cache;

 	u32	window_clamp;
 	u32	rcv_ssthresh;

 	u32	frto_highmark;
 	u16	advmss;
 	u8	frto_counter;
 	u8	nonagle     : 4,
 		thin_lto    : 1,
 		thin_dupack : 1,
 		unused      : 2;

 	u32	srtt;
 	u32	mdev;
 	u32	mdev_max;
 	u32	rttvar;
 	u32	rtt_seq;

 	u32	packets_out;
 	u32	retrans_out;

 	u16	urg_data;
 	u8	ecn_flags;
 	u8	reordering;
 	u32	snd_up;

 	u8	keepalive_probes;
 	struct tcp_options_received rx_opt;

  	u32	snd_ssthresh;
  	u32	snd_cwnd;
 	u32	snd_cwnd_cnt;
 	u32	snd_cwnd_clamp;
 	u32	snd_cwnd_used;
 	u32	snd_cwnd_stamp;
 	u32	prior_cwnd;
 	u32	prr_delivered;
 	u32	prr_out;

  	u32	rcv_wnd;
 	u32	write_seq;
 	u32	pushed_seq;
 	u32	lost_out;
 	u32	sacked_out;
 	u32	fackets_out;
 	u32	tso_deferred;
 	u32	bytes_acked;


 	struct sk_buff* lost_skb_hint;
 	struct sk_buff *scoreboard_skb_hint;
 	struct sk_buff *retransmit_skb_hint;

 	struct sk_buff_head	out_of_order_queue;


 	struct tcp_sack_block duplicate_sack[1];
 	struct tcp_sack_block selective_acks[4];

 	struct tcp_sack_block recv_sack_cache[4];

 	struct sk_buff *highest_sack;

 	int     lost_cnt_hint;
 	u32     retransmit_high;

 	u32	lost_retrans_low;

 	u32	prior_ssthresh;
 	u32	high_seq;

 	u32	retrans_stamp;
 	u32	undo_marker;
 	int	undo_retrans;
 	u32	total_retrans;

 	u32	urg_seq;
 	unsigned int		keepalive_time;
 	unsigned int		keepalive_intvl;

 	int			linger2;

 	struct {
 		u32	rtt;
 		u32	seq;
 		u32	time;
 	} rcv_rtt_est;

 	struct {
 		int	space;
 		u32	seq;
 		u32	time;
 	} rcvq_space;

 	struct {
 		u32		  probe_seq_start;
 		u32		  probe_seq_end;
 	} mtu_probe;

 #ifdef CONFIG_TCP_MD5SIG
 	const struct tcp_sock_af_ops	*af_specific;

 	struct tcp_md5sig_info	__rcu *md5sig_info;
 #endif

 	struct tcp_cookie_values  *cookie_values;
 };

 static inline struct tcp_sock *tcp_sk(const struct sock *sk)
 {
 	return (struct tcp_sock *)sk;
 }

 struct tcp_timewait_sock {
 	struct inet_timewait_sock tw_sk;
 	u32			  tw_rcv_nxt;
 	u32			  tw_snd_nxt;
 	u32			  tw_rcv_wnd;
 	u32			  tw_ts_recent;
 	long			  tw_ts_recent_stamp;
 #ifdef CONFIG_TCP_MD5SIG
 	struct tcp_md5sig_key	*tw_md5_key;
 #endif
 	struct tcp_cookie_values  *tw_cookie_values;
 };

 static inline struct tcp_timewait_sock *tcp_twsk(const struct sock *sk)
 {
 	return (struct tcp_timewait_sock *)sk;
 }

 #endif

 #endif
	/*
	* INET An implementation of the TCP/IP protocol suite for the LINUX
	* operating system. INET is implemented using the BSD Socket
	* interface as the means of communication with the user level.
	*
	* Definitions for the TCP protocol.
	*
	* Version: @(#)tcp.h 1.0.2 04/28/93
	*
	* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License
	* as published by the Free Software Foundation; either version
	* 2 of the License, or (at your option) any later version.
	*/
	#ifndef _LINUX_TCP_H
	#define _LINUX_TCP_H

	#include <linux/types.h>
	#include <asm/byteorder.h>
	#include <linux/socket.h>

	struct tcphdr {
	__be16 source;
	__be16 dest;
	__be32 seq;
	__be32 ack_seq;
	#if defined(__LITTLE_ENDIAN_BITFIELD)
	__u16 res1:4,
	doff:4,
	fin:1,
	syn:1,
	rst:1,
	psh:1,
	ack:1,
	urg:1,
	ece:1,
	cwr:1;
	#elif defined(__BIG_ENDIAN_BITFIELD)
	__u16 doff:4,
	res1:4,
	cwr:1,
	ece:1,
	urg:1,
	ack:1,
	psh:1,
	rst:1,
	syn:1,
	fin:1;
	#else
	#error "Adjust your <asm/byteorder.h> defines"
	#endif
	__be16 window;
	__sum16 check;
	__be16 urg_ptr;
	};

	union tcp_word_hdr {
	struct tcphdr hdr;
	__be32 words[5];
	};

	#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])

	enum {
	TCP_FLAG_CWR = __constant_htonl(0x00800000),
	TCP_FLAG_ECE = __constant_htonl(0x00400000),
	TCP_FLAG_URG = __constant_htonl(0x00200000),
	TCP_FLAG_ACK = __constant_htonl(0x00100000),
	TCP_FLAG_PSH = __constant_htonl(0x00080000),
	TCP_FLAG_RST = __constant_htonl(0x00040000),
	TCP_FLAG_SYN = __constant_htonl(0x00020000),
	TCP_FLAG_FIN = __constant_htonl(0x00010000),
	TCP_RESERVED_BITS = __constant_htonl(0x0F000000),
	TCP_DATA_OFFSET = __constant_htonl(0xF0000000)
	};

	#define TCP_MSS_DEFAULT 536U
	#define TCP_MSS_DESIRED 1220U

	#define TCP_NODELAY 1
	#define TCP_MAXSEG 2
	#define TCP_CORK 3
	#define TCP_KEEPIDLE 4
	#define TCP_KEEPINTVL 5
	#define TCP_KEEPCNT 6
	#define TCP_SYNCNT 7
	#define TCP_LINGER2 8
	#define TCP_DEFER_ACCEPT 9
	#define TCP_WINDOW_CLAMP 10
	#define TCP_INFO 11
	#define TCP_QUICKACK 12
	#define TCP_CONGESTION 13
	#define TCP_MD5SIG 14
	#define TCP_COOKIE_TRANSACTIONS 15
	#define TCP_THIN_LINEAR_TIMEOUTS 16
	#define TCP_THIN_DUPACK 17
	#define TCP_USER_TIMEOUT 18

	#define TCPI_OPT_TIMESTAMPS 1
	#define TCPI_OPT_SACK 2
	#define TCPI_OPT_WSCALE 4
	#define TCPI_OPT_ECN 8
	#define TCPI_OPT_ECN_SEEN 16

	enum tcp_ca_state {
	TCP_CA_Open = 0,
	#define TCPF_CA_Open (1<<TCP_CA_Open)
	TCP_CA_Disorder = 1,
	#define TCPF_CA_Disorder (1<<TCP_CA_Disorder)
	TCP_CA_CWR = 2,
	#define TCPF_CA_CWR (1<<TCP_CA_CWR)
	TCP_CA_Recovery = 3,
	#define TCPF_CA_Recovery (1<<TCP_CA_Recovery)
	TCP_CA_Loss = 4
	#define TCPF_CA_Loss (1<<TCP_CA_Loss)
	};

	struct tcp_info {
	__u8 tcpi_state;
	__u8 tcpi_ca_state;
	__u8 tcpi_retransmits;
	__u8 tcpi_probes;
	__u8 tcpi_backoff;
	__u8 tcpi_options;
	__u8 tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
	__u8 tcpi_count;

	__u32 tcpi_rto;
	__u32 tcpi_ato;
	__u32 tcpi_snd_mss;
	__u32 tcpi_rcv_mss;

	__u32 tcpi_unacked;
	__u32 tcpi_sacked;
	__u32 tcpi_lost;
	__u32 tcpi_retrans;
	__u32 tcpi_fackets;


	__u32 tcpi_last_data_sent;
	__u32 tcpi_last_ack_sent;
	__u32 tcpi_last_data_recv;
	__u32 tcpi_last_ack_recv;


	__u32 tcpi_pmtu;
	__u32 tcpi_rcv_ssthresh;
	__u32 tcpi_rtt;
	__u32 tcpi_rttvar;
	__u32 tcpi_snd_ssthresh;
	__u32 tcpi_snd_cwnd;
	__u32 tcpi_advmss;
	__u32 tcpi_reordering;

	__u32 tcpi_rcv_rtt;
	__u32 tcpi_rcv_space;

	__u32 tcpi_total_retrans;
	};

	#define TCP_MD5SIG_MAXKEYLEN 80

	struct tcp_md5sig {
	struct __kernel_sockaddr_storage tcpm_addr;
	__u16 __tcpm_pad1;
	__u16 tcpm_keylen;
	__u32 __tcpm_pad2;
	__u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN];
	};

	#define TCP_COOKIE_MIN 8
	#define TCP_COOKIE_MAX 16
	#define TCP_COOKIE_PAIR_SIZE (2*TCP_COOKIE_MAX)

	#define TCP_COOKIE_IN_ALWAYS (1 << 0)
	#define TCP_COOKIE_OUT_NEVER (1 << 1)

	#define TCP_S_DATA_IN (1 << 2)
	#define TCP_S_DATA_OUT (1 << 3)

	struct tcp_cookie_transactions {
	__u16 tcpct_flags;
	__u8 __tcpct_pad1;
	__u8 tcpct_cookie_desired;
	__u16 tcpct_s_data_desired;
	__u16 tcpct_used;
	__u8 tcpct_value[TCP_MSS_DEFAULT];
	};

	#ifdef __KERNEL__

	#include <linux/skbuff.h>
	#include <linux/dmaengine.h>
	#include <net/sock.h>
	#include <net/inet_connection_sock.h>
	#include <net/inet_timewait_sock.h>

	static inline struct tcphdr tcp_hdr(const struct sk_buff skb)
	{
	return (struct tcphdr *)skb_transport_header(skb);
	}

	static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)
	{
	return tcp_hdr(skb)->doff * 4;
	}

	static inline unsigned int tcp_optlen(const struct sk_buff *skb)
	{
	return (tcp_hdr(skb)->doff - 5) * 4;
	}

	struct tcp_sack_block_wire {
	__be32 start_seq;
	__be32 end_seq;
	};

	struct tcp_sack_block {
	u32 start_seq;
	u32 end_seq;
	};

	#define TCP_SACK_SEEN (1 << 0)
	#define TCP_FACK_ENABLED (1 << 1)
	#define TCP_DSACK_SEEN (1 << 2)

	struct tcp_options_received {
	long ts_recent_stamp;
	u32 ts_recent;
	u32 rcv_tsval;
	u32 rcv_tsecr;
	u16 saw_tstamp : 1,
	tstamp_ok : 1,
	dsack : 1,
	wscale_ok : 1,
	sack_ok : 4,
	snd_wscale : 4,
	rcv_wscale : 4;
	u8 cookie_plus:6,
	cookie_out_never:1,
	cookie_in_always:1;
	u8 num_sacks;
	u16 user_mss;
	u16 mss_clamp;
	};

	static inline void tcp_clear_options(struct tcp_options_received *rx_opt)
	{
	rx_opt->tstamp_ok = rx_opt->sack_ok = 0;
	rx_opt->wscale_ok = rx_opt->snd_wscale = 0;
	rx_opt->cookie_plus = 0;
	}

	#define TCP_NUM_SACKS 4

	struct tcp_cookie_values;
	struct tcp_request_sock_ops;

	struct tcp_request_sock {
	struct inet_request_sock req;
	#ifdef CONFIG_TCP_MD5SIG

	const struct tcp_request_sock_ops *af_specific;
	#endif
	u32 rcv_isn;
	u32 snt_isn;
	u32 snt_synack;
	};

	static inline struct tcp_request_sock tcp_rsk(const struct request_sock req)
	{
	return (struct tcp_request_sock *)req;
	}

	struct tcp_sock {

	struct inet_connection_sock inet_conn;
	u16 tcp_header_len;
	u16 xmit_size_goal_segs;

	__be32 pred_flags;

	u32 rcv_nxt;
	u32 copied_seq;
	u32 rcv_wup;
	u32 snd_nxt;

	u32 snd_una;
	u32 snd_sml;
	u32 rcv_tstamp;
	u32 lsndtime;


	struct {
	struct sk_buff_head prequeue;
	struct task_struct *task;
	struct iovec *iov;
	int memory;
	int len;
	#ifdef CONFIG_NET_DMA

	struct dma_chan *dma_chan;
	int wakeup;
	struct dma_pinned_list *pinned_list;
	dma_cookie_t dma_cookie;
	#endif
	} ucopy;

	u32 snd_wl1;
	u32 snd_wnd;
	u32 max_window;
	u32 mss_cache;

	u32 window_clamp;
	u32 rcv_ssthresh;

	u32 frto_highmark;
	u16 advmss;
	u8 frto_counter;
	u8 nonagle : 4,
	thin_lto : 1,
	thin_dupack : 1,
	unused : 2;

	u32 srtt;
	u32 mdev;
	u32 mdev_max;
	u32 rttvar;
	u32 rtt_seq;

	u32 packets_out;
	u32 retrans_out;

	u16 urg_data;
	u8 ecn_flags;
	u8 reordering;
	u32 snd_up;

	u8 keepalive_probes;
	struct tcp_options_received rx_opt;

	u32 snd_ssthresh;
	u32 snd_cwnd;
	u32 snd_cwnd_cnt;
	u32 snd_cwnd_clamp;
	u32 snd_cwnd_used;
	u32 snd_cwnd_stamp;
	u32 prior_cwnd;
	u32 prr_delivered;
	u32 prr_out;

	u32 rcv_wnd;
	u32 write_seq;
	u32 pushed_seq;
	u32 lost_out;
	u32 sacked_out;
	u32 fackets_out;
	u32 tso_deferred;
	u32 bytes_acked;


	struct sk_buff* lost_skb_hint;
	struct sk_buff *scoreboard_skb_hint;
	struct sk_buff *retransmit_skb_hint;

	struct sk_buff_head out_of_order_queue;


	struct tcp_sack_block duplicate_sack[1];
	struct tcp_sack_block selective_acks[4];

	struct tcp_sack_block recv_sack_cache[4];

	struct sk_buff *highest_sack;

	int lost_cnt_hint;
	u32 retransmit_high;

	u32 lost_retrans_low;

	u32 prior_ssthresh;
	u32 high_seq;

	u32 retrans_stamp;
	u32 undo_marker;
	int undo_retrans;
	u32 total_retrans;

	u32 urg_seq;
	unsigned int keepalive_time;
	unsigned int keepalive_intvl;

	int linger2;

	struct {
	u32 rtt;
	u32 seq;
	u32 time;
	} rcv_rtt_est;

	struct {
	int space;
	u32 seq;
	u32 time;
	} rcvq_space;

	struct {
	u32 probe_seq_start;
	u32 probe_seq_end;
	} mtu_probe;

	#ifdef CONFIG_TCP_MD5SIG
	const struct tcp_sock_af_ops *af_specific;

	struct tcp_md5sig_info __rcu *md5sig_info;
	#endif

	struct tcp_cookie_values *cookie_values;
	};

	static inline struct tcp_sock tcp_sk(const struct sock sk)
	{
	return (struct tcp_sock *)sk;
	}

	struct tcp_timewait_sock {
	struct inet_timewait_sock tw_sk;
	u32 tw_rcv_nxt;
	u32 tw_snd_nxt;
	u32 tw_rcv_wnd;
	u32 tw_ts_recent;
	long tw_ts_recent_stamp;
	#ifdef CONFIG_TCP_MD5SIG
	struct tcp_md5sig_key *tw_md5_key;
	#endif
	struct tcp_cookie_values *tw_cookie_values;
	};

	static inline struct tcp_timewait_sock tcp_twsk(const struct sock sk)
	{
	return (struct tcp_timewait_sock *)sk;
	}

	#endif

	#endif