diff --git a/include/linux/tcp.h b/include/linux/tcp.h
new file mode 100644
index 0000000..7937d74
--- /dev/null
+++ b/include/linux/tcp.h
@@ -0,0 +1,448 @@
+/*
+ * 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