Auto-update from upstream

40 files changed, 1462 insertions, 694 deletions

diff --git a/include/net/act_api.h b/include/net/act_api.h
index ed00a995f57..b55eb7c7f03 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -63,7 +63,7 @@ struct tc_action_ops
 	__u32   type; /* TBD to match kind */
 	__u32 	capab;  /* capabilities includes 4 bit version */
 	struct module		*owner;
-	int     (*act)(struct sk_buff **, struct tc_action *);
+	int     (*act)(struct sk_buff **, struct tc_action *, struct tcf_result *);
 	int     (*get_stats)(struct sk_buff *, struct tc_action *);
 	int     (*dump)(struct sk_buff *, struct tc_action *,int , int);
 	int     (*cleanup)(struct tc_action *, int bind);
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index a0ed9367217..750e2508dd9 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -45,6 +45,7 @@ struct prefix_info {
 
 #ifdef __KERNEL__
 
+#include <linux/config.h>
 #include <linux/netdevice.h>
 #include <net/if_inet6.h>
 #include <net/ipv6.h>
@@ -238,5 +239,10 @@ static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
 		addr->s6_addr32[3] == htonl(0x00000002));
 }
 
+#ifdef CONFIG_PROC_FS
+extern int if6_proc_init(void);
+extern void if6_proc_exit(void);
+#endif
+
 #endif
 #endif
diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index b60b3846b9d..b5d785ab4a0 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -1,5 +1,11 @@
 #ifndef __LINUX_NET_AFUNIX_H
 #define __LINUX_NET_AFUNIX_H
+
+#include <linux/config.h>
+#include <linux/socket.h>
+#include <linux/un.h>
+#include <net/sock.h>
+
 extern void unix_inflight(struct file *fp);
 extern void unix_notinflight(struct file *fp);
 extern void unix_gc(void);
@@ -74,5 +80,14 @@ struct unix_sock {
         wait_queue_head_t       peer_wait;
 };
 #define unix_sk(__sk) ((struct unix_sock *)__sk)
+
+#ifdef CONFIG_SYSCTL
+extern int sysctl_unix_max_dgram_qlen;
+extern void unix_sysctl_register(void);
+extern void unix_sysctl_unregister(void);
+#else
+static inline void unix_sysctl_register(void) {}
+static inline void unix_sysctl_unregister(void) {}
+#endif
 #endif
 #endif
diff --git a/include/net/arp.h b/include/net/arp.h
index a1f09fad6a5..a13e30c35f4 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -11,7 +11,7 @@ extern struct neigh_table arp_tbl;
 
 extern void	arp_init(void);
 extern int	arp_rcv(struct sk_buff *skb, struct net_device *dev,
-			struct packet_type *pt);
+			struct packet_type *pt, struct net_device *orig_dev);
 extern int	arp_find(unsigned char *haddr, struct sk_buff *skb);
 extern int	arp_ioctl(unsigned int cmd, void __user *arg);
 extern void     arp_send(int type, int ptype, u32 dest_ip, 
diff --git a/include/net/ax25.h b/include/net/ax25.h
index 3696f988a9f..926eed54302 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -316,7 +316,7 @@ extern int  ax25_protocol_is_registered(unsigned int);
 
 /* ax25_in.c */
 extern int  ax25_rx_iframe(ax25_cb *, struct sk_buff *);
-extern int  ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *);
+extern int  ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
 
 /* ax25_ip.c */
 extern int  ax25_encapsulate(struct sk_buff *, struct net_device *, unsigned short, void *, void *, unsigned int);
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 06b24f63702..6dfa4a61ffd 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -131,11 +131,12 @@ struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
 
 /* Skb helpers */
 struct bt_skb_cb {
-	int incoming;
+	__u8 pkt_type;
+	__u8 incoming;
 };
 #define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb)) 
 
-static inline struct sk_buff *bt_skb_alloc(unsigned int len, int how)
+static inline struct sk_buff *bt_skb_alloc(unsigned int len, unsigned int __nocast how)
 {
 	struct sk_buff *skb;
 
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 6f0706f4af6..371e7d3f2e6 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -453,6 +453,15 @@ struct inquiry_info_with_rssi {
 	__u16    clock_offset;
 	__s8     rssi;
 } __attribute__ ((packed));
+struct inquiry_info_with_rssi_and_pscan_mode {
+	bdaddr_t bdaddr;
+	__u8     pscan_rep_mode;
+	__u8     pscan_period_mode;
+	__u8     pscan_mode;
+	__u8     dev_class[3];
+	__u16    clock_offset;
+	__s8     rssi;
+} __attribute__ ((packed));
 
 #define HCI_EV_CONN_COMPLETE 	0x03
 struct hci_ev_conn_complete {
@@ -584,6 +593,12 @@ struct hci_ev_clock_offset {
 	__u16    clock_offset;
 } __attribute__ ((packed));
 
+#define HCI_EV_PSCAN_REP_MODE	0x20
+struct hci_ev_pscan_rep_mode {
+	bdaddr_t bdaddr;
+	__u8     pscan_rep_mode;
+} __attribute__ ((packed));
+
 /* Internal events generated by Bluetooth stack */
 #define HCI_EV_STACK_INTERNAL	0xFD
 struct hci_ev_stack_internal {
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 6d63a47c731..7f933f30207 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -404,7 +404,7 @@ static inline int hci_recv_frame(struct sk_buff *skb)
 	bt_cb(skb)->incoming = 1;
 
 	/* Time stamp */
-	do_gettimeofday(&skb->stamp);
+	__net_timestamp(skb);
 
 	/* Queue frame for rx task */
 	skb_queue_tail(&hdev->rx_q, skb);
diff --git a/include/net/bluetooth/rfcomm.h b/include/net/bluetooth/rfcomm.h
index 13669bad00b..ffea9d54071 100644
--- a/include/net/bluetooth/rfcomm.h
+++ b/include/net/bluetooth/rfcomm.h
@@ -80,9 +80,9 @@
 #define RFCOMM_RPN_STOP_15	1
 
 #define RFCOMM_RPN_PARITY_NONE	0x0
-#define RFCOMM_RPN_PARITY_ODD	0x4
-#define RFCOMM_RPN_PARITY_EVEN	0x5
-#define RFCOMM_RPN_PARITY_MARK	0x6
+#define RFCOMM_RPN_PARITY_ODD	0x1
+#define RFCOMM_RPN_PARITY_EVEN	0x3
+#define RFCOMM_RPN_PARITY_MARK	0x5
 #define RFCOMM_RPN_PARITY_SPACE	0x7
 
 #define RFCOMM_RPN_FLOW_NONE	0x00
@@ -223,8 +223,14 @@ struct rfcomm_dlc {
 #define RFCOMM_CFC_DISABLED 0
 #define RFCOMM_CFC_ENABLED  RFCOMM_MAX_CREDITS
 
+/* ---- RFCOMM SEND RPN ---- */
+int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
+			u8 bit_rate, u8 data_bits, u8 stop_bits,
+			u8 parity, u8 flow_ctrl_settings, 
+			u8 xon_char, u8 xoff_char, u16 param_mask);
+
 /* ---- RFCOMM DLCs (channels) ---- */
-struct rfcomm_dlc *rfcomm_dlc_alloc(int prio);
+struct rfcomm_dlc *rfcomm_dlc_alloc(unsigned int __nocast prio);
 void rfcomm_dlc_free(struct rfcomm_dlc *d);
 int  rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 channel);
 int  rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
diff --git a/include/net/datalink.h b/include/net/datalink.h
index 5797ba3d2eb..deb7ca75db4 100644
--- a/include/net/datalink.h
+++ b/include/net/datalink.h
@@ -9,7 +9,7 @@ struct datalink_proto {
         unsigned short  header_length;
 
         int     (*rcvfunc)(struct sk_buff *, struct net_device *,
-                                struct packet_type *);
+                                struct packet_type *, struct net_device *);
 	int     (*request)(struct datalink_proto *, struct sk_buff *,
                                         unsigned char *);
 	struct list_head node;
diff --git a/include/net/dn.h b/include/net/dn.h
index 5551c46db39..c1dbbd22279 100644
--- a/include/net/dn.h
+++ b/include/net/dn.h
@@ -3,6 +3,7 @@
 
 #include <linux/dn.h>
 #include <net/sock.h>
+#include <net/tcp.h>
 #include <asm/byteorder.h>
 
 typedef unsigned short dn_address;
diff --git a/include/net/icmp.h b/include/net/icmp.h
index e5ef0d15fb4..6cdebeee5f9 100644
--- a/include/net/icmp.h
+++ b/include/net/icmp.h
@@ -57,4 +57,11 @@ static inline struct raw_sock *raw_sk(const struct sock *sk)
 	return (struct raw_sock *)sk;
 }
 
+extern int sysctl_icmp_echo_ignore_all;
+extern int sysctl_icmp_echo_ignore_broadcasts;
+extern int sysctl_icmp_ignore_bogus_error_responses;
+extern int sysctl_icmp_errors_use_inbound_ifaddr;
+extern int sysctl_icmp_ratelimit;
+extern int sysctl_icmp_ratemask;
+
 #endif	/* _ICMP_H */
diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h
new file mode 100644
index 00000000000..03df3b15796
--- /dev/null
+++ b/include/net/inet6_hashtables.h
@@ -0,0 +1,130 @@
+/*
+ * 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.
+ *
+ * Authors:	Lotsa people, from code originally in tcp
+ *
+ *	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 _INET6_HASHTABLES_H
+#define _INET6_HASHTABLES_H
+
+#include <linux/config.h>
+
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+#include <linux/in6.h>
+#include <linux/ipv6.h>
+#include <linux/types.h>
+
+#include <net/ipv6.h>
+
+struct inet_hashinfo;
+
+/* I have no idea if this is a good hash for v6 or not. -DaveM */
+static inline int inet6_ehashfn(const struct in6_addr *laddr, const u16 lport,
+				const struct in6_addr *faddr, const u16 fport,
+				const int ehash_size)
+{
+	int hashent = (lport ^ fport);
+
+	hashent ^= (laddr->s6_addr32[3] ^ faddr->s6_addr32[3]);
+	hashent ^= hashent >> 16;
+	hashent ^= hashent >> 8;
+	return (hashent & (ehash_size - 1));
+}
+
+static inline int inet6_sk_ehashfn(const struct sock *sk, const int ehash_size)
+{
+	const struct inet_sock *inet = inet_sk(sk);
+	const struct ipv6_pinfo *np = inet6_sk(sk);
+	const struct in6_addr *laddr = &np->rcv_saddr;
+	const struct in6_addr *faddr = &np->daddr;
+	const __u16 lport = inet->num;
+	const __u16 fport = inet->dport;
+	return inet6_ehashfn(laddr, lport, faddr, fport, ehash_size);
+}
+
+/*
+ * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so
+ * we need not check it for TCP lookups anymore, thanks Alexey. -DaveM
+ *
+ * The sockhash lock must be held as a reader here.
+ */
+static inline struct sock *
+		__inet6_lookup_established(struct inet_hashinfo *hashinfo,
+					   const struct in6_addr *saddr,
+					   const u16 sport,
+					   const struct in6_addr *daddr,
+					   const u16 hnum,
+					   const int dif)
+{
+	struct sock *sk;
+	const struct hlist_node *node;
+	const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
+	/* Optimize here for direct hit, only listening connections can
+	 * have wildcards anyways.
+	 */
+	const int hash = inet6_ehashfn(daddr, hnum, saddr, sport,
+				       hashinfo->ehash_size);
+	struct inet_ehash_bucket *head = &hashinfo->ehash[hash];
+
+	read_lock(&head->lock);
+	sk_for_each(sk, node, &head->chain) {
+		/* For IPV6 do the cheaper port and family tests first. */
+		if (INET6_MATCH(sk, saddr, daddr, ports, dif))
+			goto hit; /* You sunk my battleship! */
+	}
+	/* Must check for a TIME_WAIT'er before going to listener hash. */
+	sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) {
+		const struct inet_timewait_sock *tw = inet_twsk(sk);
+
+		if(*((__u32 *)&(tw->tw_dport))	== ports	&&
+		   sk->sk_family		== PF_INET6) {
+			const struct tcp6_timewait_sock *tcp6tw = tcp6_twsk(sk);
+
+			if (ipv6_addr_equal(&tcp6tw->tw_v6_daddr, saddr)	&&
+			    ipv6_addr_equal(&tcp6tw->tw_v6_rcv_saddr, daddr)	&&
+			    (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif))
+				goto hit;
+		}
+	}
+	read_unlock(&head->lock);
+	return NULL;
+
+hit:
+	sock_hold(sk);
+	read_unlock(&head->lock);
+	return sk;
+}
+
+extern struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
+					  const struct in6_addr *daddr,
+					  const unsigned short hnum,
+					  const int dif);
+
+static inline struct sock *__inet6_lookup(struct inet_hashinfo *hashinfo,
+					  const struct in6_addr *saddr,
+					  const u16 sport,
+					  const struct in6_addr *daddr,
+					  const u16 hnum,
+					  const int dif)
+{
+	struct sock *sk = __inet6_lookup_established(hashinfo, saddr, sport,
+						     daddr, hnum, dif);
+	if (sk)
+		return sk;
+
+	return inet6_lookup_listener(hashinfo, daddr, hnum, dif);
+}
+
+extern struct sock *inet6_lookup(struct inet_hashinfo *hashinfo,
+				 const struct in6_addr *saddr, const u16 sport,
+				 const struct in6_addr *daddr, const u16 dport,
+				 const int dif);
+#endif /* defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) */
+#endif /* _INET6_HASHTABLES_H */
diff --git a/include/net/inet_common.h b/include/net/inet_common.h
index fbc1f4d140d..f943306ce5f 100644
--- a/include/net/inet_common.h
+++ b/include/net/inet_common.h
@@ -8,6 +8,11 @@ extern struct proto_ops		inet_dgram_ops;
  *	INET4 prototypes used by INET6
  */
 
+struct msghdr;
+struct sock;
+struct sockaddr;
+struct socket;
+
 extern void			inet_remove_sock(struct sock *sk1);
 extern void			inet_put_sock(unsigned short num, 
 					      struct sock *sk);
@@ -29,7 +34,6 @@ extern unsigned int		inet_poll(struct file * file, struct socket *sock, struct p
 extern int			inet_listen(struct socket *sock, int backlog);
 
 extern void			inet_sock_destruct(struct sock *sk);
-extern atomic_t			inet_sock_nr;
 
 extern int			inet_bind(struct socket *sock, 
 					  struct sockaddr *uaddr, int addr_len);
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
new file mode 100644
index 00000000000..651f824c100
--- /dev/null
+++ b/include/net/inet_connection_sock.h
@@ -0,0 +1,276 @@
+/*
+ * NET		Generic infrastructure for INET connection oriented protocols.
+ *
+ *		Definitions for inet_connection_sock 
+ *
+ * Authors:	Many people, see the TCP sources
+ *
+ * 		From code originally in TCP
+ *
+ *		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 _INET_CONNECTION_SOCK_H
+#define _INET_CONNECTION_SOCK_H
+
+#include <linux/ip.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <net/request_sock.h>
+
+#define INET_CSK_DEBUG 1
+
+/* Cancel timers, when they are not required. */
+#undef INET_CSK_CLEAR_TIMERS
+
+struct inet_bind_bucket;
+struct inet_hashinfo;
+struct tcp_congestion_ops;
+
+/** inet_connection_sock - INET connection oriented sock
+ *
+ * @icsk_accept_queue:	   FIFO of established children 
+ * @icsk_bind_hash:	   Bind node
+ * @icsk_timeout:	   Timeout
+ * @icsk_retransmit_timer: Resend (no ack)
+ * @icsk_rto:		   Retransmit timeout
+ * @icsk_ca_ops		   Pluggable congestion control hook
+ * @icsk_ca_state:	   Congestion control state
+ * @icsk_retransmits:	   Number of unrecovered [RTO] timeouts
+ * @icsk_pending:	   Scheduled timer event
+ * @icsk_backoff:	   Backoff
+ * @icsk_syn_retries:      Number of allowed SYN (or equivalent) retries
+ * @icsk_probes_out:	   unanswered 0 window probes
+ * @icsk_ack:		   Delayed ACK control data
+ */
+struct inet_connection_sock {
+	/* inet_sock has to be the first member! */
+	struct inet_sock	  icsk_inet;
+	struct request_sock_queue icsk_accept_queue;
+	struct inet_bind_bucket	  *icsk_bind_hash;
+	unsigned long		  icsk_timeout;
+ 	struct timer_list	  icsk_retransmit_timer;
+ 	struct timer_list	  icsk_delack_timer;
+	__u32			  icsk_rto;
+	struct tcp_congestion_ops *icsk_ca_ops;
+	__u8			  icsk_ca_state;
+	__u8			  icsk_retransmits;
+	__u8			  icsk_pending;
+	__u8			  icsk_backoff;
+	__u8			  icsk_syn_retries;
+	__u8			  icsk_probes_out;
+	/* 2 BYTES HOLE, TRY TO PACK! */
+	struct {
+		__u8		  pending;	 /* ACK is pending			   */
+		__u8		  quick;	 /* Scheduled number of quick acks	   */
+		__u8		  pingpong;	 /* The session is interactive		   */
+		__u8		  blocked;	 /* Delayed ACK was blocked by socket lock */
+		__u32		  ato;		 /* Predicted tick of soft clock	   */
+		unsigned long	  timeout;	 /* Currently scheduled timeout		   */
+		__u32		  lrcvtime;	 /* timestamp of last received data packet */
+		__u16		  last_seg_size; /* Size of last incoming segment	   */
+		__u16		  rcv_mss;	 /* MSS used for delayed ACK decisions	   */ 
+	} icsk_ack;
+	u32			  icsk_ca_priv[16];
+#define ICSK_CA_PRIV_SIZE	(16 * sizeof(u32))
+};
+
+#define ICSK_TIME_RETRANS	1	/* Retransmit timer */
+#define ICSK_TIME_DACK		2	/* Delayed ack timer */
+#define ICSK_TIME_PROBE0	3	/* Zero window probe timer */
+#define ICSK_TIME_KEEPOPEN	4	/* Keepalive timer */
+
+static inline struct inet_connection_sock *inet_csk(const struct sock *sk)
+{
+	return (struct inet_connection_sock *)sk;
+}
+
+static inline void *inet_csk_ca(const struct sock *sk)
+{
+	return (void *)inet_csk(sk)->icsk_ca_priv;
+}
+
+extern struct sock *inet_csk_clone(struct sock *sk,
+				   const struct request_sock *req,
+				   const unsigned int __nocast priority);
+
+enum inet_csk_ack_state_t {
+	ICSK_ACK_SCHED	= 1,
+	ICSK_ACK_TIMER  = 2,
+	ICSK_ACK_PUSHED = 4
+};
+
+extern void inet_csk_init_xmit_timers(struct sock *sk,
+				      void (*retransmit_handler)(unsigned long),
+				      void (*delack_handler)(unsigned long),
+				      void (*keepalive_handler)(unsigned long));
+extern void inet_csk_clear_xmit_timers(struct sock *sk);
+
+static inline void inet_csk_schedule_ack(struct sock *sk)
+{
+	inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_SCHED;
+}
+
+static inline int inet_csk_ack_scheduled(const struct sock *sk)
+{
+	return inet_csk(sk)->icsk_ack.pending & ICSK_ACK_SCHED;
+}
+
+static inline void inet_csk_delack_init(struct sock *sk)
+{
+	memset(&inet_csk(sk)->icsk_ack, 0, sizeof(inet_csk(sk)->icsk_ack));
+}
+
+extern void inet_csk_delete_keepalive_timer(struct sock *sk);
+extern void inet_csk_reset_keepalive_timer(struct sock *sk, unsigned long timeout);
+
+#ifdef INET_CSK_DEBUG
+extern const char inet_csk_timer_bug_msg[];
+#endif
+
+static inline void inet_csk_clear_xmit_timer(struct sock *sk, const int what)
+{
+	struct inet_connection_sock *icsk = inet_csk(sk);
+	
+	if (what == ICSK_TIME_RETRANS || what == ICSK_TIME_PROBE0) {
+		icsk->icsk_pending = 0;
+#ifdef INET_CSK_CLEAR_TIMERS
+		sk_stop_timer(sk, &icsk->icsk_retransmit_timer);
+#endif
+	} else if (what == ICSK_TIME_DACK) {
+		icsk->icsk_ack.blocked = icsk->icsk_ack.pending = 0;
+#ifdef INET_CSK_CLEAR_TIMERS
+		sk_stop_timer(sk, &icsk->icsk_delack_timer);
+#endif
+	}
+#ifdef INET_CSK_DEBUG
+	else {
+		pr_debug("%s", inet_csk_timer_bug_msg);
+	}
+#endif
+}
+
+/*
+ *	Reset the retransmission timer
+ */
+static inline void inet_csk_reset_xmit_timer(struct sock *sk, const int what,
+					     unsigned long when,
+					     const unsigned long max_when)
+{
+	struct inet_connection_sock *icsk = inet_csk(sk);
+
+	if (when > max_when) {
+#ifdef INET_CSK_DEBUG
+		pr_debug("reset_xmit_timer: sk=%p %d when=0x%lx, caller=%p\n",
+			 sk, what, when, current_text_addr());
+#endif
+		when = max_when;
+	}
+
+	if (what == ICSK_TIME_RETRANS || what == ICSK_TIME_PROBE0) {
+		icsk->icsk_pending = what;
+		icsk->icsk_timeout = jiffies + when;
+		sk_reset_timer(sk, &icsk->icsk_retransmit_timer, icsk->icsk_timeout);
+	} else if (what == ICSK_TIME_DACK) {
+		icsk->icsk_ack.pending |= ICSK_ACK_TIMER;
+		icsk->icsk_ack.timeout = jiffies + when;
+		sk_reset_timer(sk, &icsk->icsk_delack_timer, icsk->icsk_ack.timeout);
+	}
+#ifdef INET_CSK_DEBUG
+	else {
+		pr_debug("%s", inet_csk_timer_bug_msg);
+	}
+#endif
+}
+
+extern struct sock *inet_csk_accept(struct sock *sk, int flags, int *err);
+
+extern struct request_sock *inet_csk_search_req(const struct sock *sk,
+						struct request_sock ***prevp,
+						const __u16 rport,
+						const __u32 raddr,
+						const __u32 laddr);
+extern int inet_csk_get_port(struct inet_hashinfo *hashinfo,
+			     struct sock *sk, unsigned short snum);
+
+extern struct dst_entry* inet_csk_route_req(struct sock *sk,
+					    const struct request_sock *req);
+
+static inline void inet_csk_reqsk_queue_add(struct sock *sk,
+					    struct request_sock *req,
+					    struct sock *child)
+{
+	reqsk_queue_add(&inet_csk(sk)->icsk_accept_queue, req, sk, child);
+}
+
+extern void inet_csk_reqsk_queue_hash_add(struct sock *sk,
+					  struct request_sock *req,
+					  const unsigned timeout);
+
+static inline void inet_csk_reqsk_queue_removed(struct sock *sk,
+						struct request_sock *req)
+{
+	if (reqsk_queue_removed(&inet_csk(sk)->icsk_accept_queue, req) == 0)
+		inet_csk_delete_keepalive_timer(sk);
+}
+
+static inline void inet_csk_reqsk_queue_added(struct sock *sk,
+					      const unsigned long timeout)
+{
+	if (reqsk_queue_added(&inet_csk(sk)->icsk_accept_queue) == 0)
+		inet_csk_reset_keepalive_timer(sk, timeout);
+}
+
+static inline int inet_csk_reqsk_queue_len(const struct sock *sk)
+{
+	return reqsk_queue_len(&inet_csk(sk)->icsk_accept_queue);
+}
+
+static inline int inet_csk_reqsk_queue_young(const struct sock *sk)
+{
+	return reqsk_queue_len_young(&inet_csk(sk)->icsk_accept_queue);
+}
+
+static inline int inet_csk_reqsk_queue_is_full(const struct sock *sk)
+{
+	return reqsk_queue_is_full(&inet_csk(sk)->icsk_accept_queue);
+}
+
+static inline void inet_csk_reqsk_queue_unlink(struct sock *sk,
+					       struct request_sock *req,
+					       struct request_sock **prev)
+{
+	reqsk_queue_unlink(&inet_csk(sk)->icsk_accept_queue, req, prev);
+}
+
+static inline void inet_csk_reqsk_queue_drop(struct sock *sk,
+					     struct request_sock *req,
+					     struct request_sock **prev)
+{
+	inet_csk_reqsk_queue_unlink(sk, req, prev);
+	inet_csk_reqsk_queue_removed(sk, req);
+	reqsk_free(req);
+}
+
+extern void inet_csk_reqsk_queue_prune(struct sock *parent,
+				       const unsigned long interval,
+				       const unsigned long timeout,
+				       const unsigned long max_rto);
+
+extern void inet_csk_destroy_sock(struct sock *sk);
+
+/*
+ * LISTEN is a special case for poll..
+ */
+static inline unsigned int inet_csk_listen_poll(const struct sock *sk)
+{
+	return !reqsk_queue_empty(&inet_csk(sk)->icsk_accept_queue) ?
+			(POLLIN | POLLRDNORM) : 0;
+}
+
+extern int  inet_csk_listen_start(struct sock *sk, const int nr_table_entries);
+extern void inet_csk_listen_stop(struct sock *sk);
+
+#endif /* _INET_CONNECTION_SOCK_H */
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h
new file mode 100644
index 00000000000..646b6ea7fe2
--- /dev/null
+++ b/include/net/inet_hashtables.h
@@ -0,0 +1,427 @@
+/*
+ * 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.
+ *
+ * Authors:	Lotsa people, from code originally in tcp
+ *
+ *	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 _INET_HASHTABLES_H
+#define _INET_HASHTABLES_H
+
+#include <linux/config.h>
+
+#include <linux/interrupt.h>
+#include <linux/ipv6.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/socket.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+
+#include <net/inet_connection_sock.h>
+#include <net/route.h>
+#include <net/sock.h>
+#include <net/tcp_states.h>
+
+#include <asm/atomic.h>
+#include <asm/byteorder.h>
+
+/* This is for all connections with a full identity, no wildcards.
+ * New scheme, half the table is for TIME_WAIT, the other half is
+ * for the rest.  I'll experiment with dynamic table growth later.
+ */
+struct inet_ehash_bucket {
+	rwlock_t	  lock;
+	struct hlist_head chain;
+} __attribute__((__aligned__(8)));
+
+/* There are a few simple rules, which allow for local port reuse by
+ * an application.  In essence:
+ *
+ *	1) Sockets bound to different interfaces may share a local port.
+ *	   Failing that, goto test 2.
+ *	2) If all sockets have sk->sk_reuse set, and none of them are in
+ *	   TCP_LISTEN state, the port may be shared.
+ *	   Failing that, goto test 3.
+ *	3) If all sockets are bound to a specific inet_sk(sk)->rcv_saddr local
+ *	   address, and none of them are the same, the port may be
+ *	   shared.
+ *	   Failing this, the port cannot be shared.
+ *
+ * The interesting point, is test #2.  This is what an FTP server does
+ * all day.  To optimize this case we use a specific flag bit defined
+ * below.  As we add sockets to a bind bucket list, we perform a
+ * check of: (newsk->sk_reuse && (newsk->sk_state != TCP_LISTEN))
+ * As long as all sockets added to a bind bucket pass this test,
+ * the flag bit will be set.
+ * The resulting situation is that tcp_v[46]_verify_bind() can just check
+ * for this flag bit, if it is set and the socket trying to bind has
+ * sk->sk_reuse set, we don't even have to walk the owners list at all,
+ * we return that it is ok to bind this socket to the requested local port.
+ *
+ * Sounds like a lot of work, but it is worth it.  In a more naive
+ * implementation (ie. current FreeBSD etc.) the entire list of ports
+ * must be walked for each data port opened by an ftp server.  Needless
+ * to say, this does not scale at all.  With a couple thousand FTP
+ * users logged onto your box, isn't it nice to know that new data
+ * ports are created in O(1) time?  I thought so. ;-)	-DaveM
+ */
+struct inet_bind_bucket {
+	unsigned short		port;
+	signed short		fastreuse;
+	struct hlist_node	node;
+	struct hlist_head	owners;
+};
+
+#define inet_bind_bucket_for_each(tb, node, head) \
+	hlist_for_each_entry(tb, node, head, node)
+
+struct inet_bind_hashbucket {
+	spinlock_t		lock;
+	struct hlist_head	chain;
+};
+
+/* This is for listening sockets, thus all sockets which possess wildcards. */
+#define INET_LHTABLE_SIZE	32	/* Yes, really, this is all you need. */
+
+struct inet_hashinfo {
+	/* This is for sockets with full identity only.  Sockets here will
+	 * always be without wildcards and will have the following invariant:
+	 *
+	 *          TCP_ESTABLISHED <= sk->sk_state < TCP_CLOSE
+	 *
+	 * First half of the table is for sockets not in TIME_WAIT, second half
+	 * is for TIME_WAIT sockets only.
+	 */
+	struct inet_ehash_bucket	*ehash;
+
+	/* Ok, let's try this, I give up, we do need a local binding
+	 * TCP hash as well as the others for fast bind/connect.
+	 */
+	struct inet_bind_hashbucket	*bhash;
+
+	int				bhash_size;
+	int				ehash_size;
+
+	/* All sockets in TCP_LISTEN state will be in here.  This is the only
+	 * table where wildcard'd TCP sockets can exist.  Hash function here
+	 * is just local port number.
+	 */
+	struct hlist_head		listening_hash[INET_LHTABLE_SIZE];
+
+	/* All the above members are written once at bootup and
+	 * never written again _or_ are predominantly read-access.
+	 *
+	 * Now align to a new cache line as all the following members
+	 * are often dirty.
+	 */
+	rwlock_t			lhash_lock ____cacheline_aligned;
+	atomic_t			lhash_users;
+	wait_queue_head_t		lhash_wait;
+	spinlock_t			portalloc_lock;
+	kmem_cache_t			*bind_bucket_cachep;
+	int				port_rover;
+};
+
+static inline int inet_ehashfn(const __u32 laddr, const __u16 lport,
+			       const __u32 faddr, const __u16 fport,
+			       const int ehash_size)
+{
+	int h = (laddr ^ lport) ^ (faddr ^ fport);
+	h ^= h >> 16;
+	h ^= h >> 8;
+	return h & (ehash_size - 1);
+}
+
+static inline int inet_sk_ehashfn(const struct sock *sk, const int ehash_size)
+{
+	const struct inet_sock *inet = inet_sk(sk);
+	const __u32 laddr = inet->rcv_saddr;
+	const __u16 lport = inet->num;
+	const __u32 faddr = inet->daddr;
+	const __u16 fport = inet->dport;
+
+	return inet_ehashfn(laddr, lport, faddr, fport, ehash_size);
+}
+
+extern struct inet_bind_bucket *
+		    inet_bind_bucket_create(kmem_cache_t *cachep,
+					    struct inet_bind_hashbucket *head,
+					    const unsigned short snum);
+extern void inet_bind_bucket_destroy(kmem_cache_t *cachep,
+				     struct inet_bind_bucket *tb);
+
+static inline int inet_bhashfn(const __u16 lport, const int bhash_size)
+{
+	return lport & (bhash_size - 1);
+}
+
+extern void inet_bind_hash(struct sock *sk, struct inet_bind_bucket *tb,
+			   const unsigned short snum);
+
+/* These can have wildcards, don't try too hard. */
+static inline int inet_lhashfn(const unsigned short num)
+{
+	return num & (INET_LHTABLE_SIZE - 1);
+}
+
+static inline int inet_sk_listen_hashfn(const struct sock *sk)
+{
+	return inet_lhashfn(inet_sk(sk)->num);
+}
+
+/* Caller must disable local BH processing. */
+static inline void __inet_inherit_port(struct inet_hashinfo *table,
+				       struct sock *sk, struct sock *child)
+{
+	const int bhash = inet_bhashfn(inet_sk(child)->num, table->bhash_size);
+	struct inet_bind_hashbucket *head = &table->bhash[bhash];
+	struct inet_bind_bucket *tb;
+
+	spin_lock(&head->lock);
+	tb = inet_csk(sk)->icsk_bind_hash;
+	sk_add_bind_node(child, &tb->owners);
+	inet_csk(child)->icsk_bind_hash = tb;
+	spin_unlock(&head->lock);
+}
+
+static inline void inet_inherit_port(struct inet_hashinfo *table,
+				     struct sock *sk, struct sock *child)
+{
+	local_bh_disable();
+	__inet_inherit_port(table, sk, child);
+	local_bh_enable();
+}
+
+extern void inet_put_port(struct inet_hashinfo *table, struct sock *sk);
+
+extern void inet_listen_wlock(struct inet_hashinfo *hashinfo);
+
+/*
+ * - We may sleep inside this lock.
+ * - If sleeping is not required (or called from BH),
+ *   use plain read_(un)lock(&inet_hashinfo.lhash_lock).
+ */
+static inline void inet_listen_lock(struct inet_hashinfo *hashinfo)
+{
+	/* read_lock synchronizes to candidates to writers */
+	read_lock(&hashinfo->lhash_lock);
+	atomic_inc(&hashinfo->lhash_users);
+	read_unlock(&hashinfo->lhash_lock);
+}
+
+static inline void inet_listen_unlock(struct inet_hashinfo *hashinfo)
+{
+	if (atomic_dec_and_test(&hashinfo->lhash_users))
+		wake_up(&hashinfo->lhash_wait);
+}
+
+static inline void __inet_hash(struct inet_hashinfo *hashinfo,
+			       struct sock *sk, const int listen_possible)
+{
+	struct hlist_head *list;
+	rwlock_t *lock;
+
+	BUG_TRAP(sk_unhashed(sk));
+	if (listen_possible && sk->sk_state == TCP_LISTEN) {
+		list = &hashinfo->listening_hash[inet_sk_listen_hashfn(sk)];
+		lock = &hashinfo->lhash_lock;
+		inet_listen_wlock(hashinfo);
+	} else {
+		sk->sk_hashent = inet_sk_ehashfn(sk, hashinfo->ehash_size);
+		list = &hashinfo->ehash[sk->sk_hashent].chain;
+		lock = &hashinfo->ehash[sk->sk_hashent].lock;
+		write_lock(lock);
+	}
+	__sk_add_node(sk, list);
+	sock_prot_inc_use(sk->sk_prot);
+	write_unlock(lock);
+	if (listen_possible && sk->sk_state == TCP_LISTEN)
+		wake_up(&hashinfo->lhash_wait);
+}
+
+static inline void inet_hash(struct inet_hashinfo *hashinfo, struct sock *sk)
+{
+	if (sk->sk_state != TCP_CLOSE) {
+		local_bh_disable();
+		__inet_hash(hashinfo, sk, 1);
+		local_bh_enable();
+	}
+}
+
+static inline void inet_unhash(struct inet_hashinfo *hashinfo, struct sock *sk)
+{
+	rwlock_t *lock;
+
+	if (sk_unhashed(sk))
+		goto out;
+
+	if (sk->sk_state == TCP_LISTEN) {
+		local_bh_disable();
+		inet_listen_wlock(hashinfo);
+		lock = &hashinfo->lhash_lock;
+	} else {
+		struct inet_ehash_bucket *head = &hashinfo->ehash[sk->sk_hashent];
+		lock = &head->lock;
+		write_lock_bh(&head->lock);
+	}
+
+	if (__sk_del_node_init(sk))
+		sock_prot_dec_use(sk->sk_prot);
+	write_unlock_bh(lock);
+out:
+	if (sk->sk_state == TCP_LISTEN)
+		wake_up(&hashinfo->lhash_wait);
+}
+
+static inline int inet_iif(const struct sk_buff *skb)
+{
+	return ((struct rtable *)skb->dst)->rt_iif;
+}
+
+extern struct sock *__inet_lookup_listener(const struct hlist_head *head,
+					   const u32 daddr,
+					   const unsigned short hnum,
+					   const int dif);
+
+/* Optimize the common listener case. */
+static inline struct sock *
+		inet_lookup_listener(struct inet_hashinfo *hashinfo,
+				     const u32 daddr,
+				     const unsigned short hnum, const int dif)
+{
+	struct sock *sk = NULL;
+	const struct hlist_head *head;
+
+	read_lock(&hashinfo->lhash_lock);
+	head = &hashinfo->listening_hash[inet_lhashfn(hnum)];
+	if (!hlist_empty(head)) {
+		const struct inet_sock *inet = inet_sk((sk = __sk_head(head)));
+
+		if (inet->num == hnum && !sk->sk_node.next &&
+		    (!inet->rcv_saddr || inet->rcv_saddr == daddr) &&
+		    (sk->sk_family == PF_INET || !ipv6_only_sock(sk)) &&
+		    !sk->sk_bound_dev_if)
+			goto sherry_cache;
+		sk = __inet_lookup_listener(head, daddr, hnum, dif);
+	}
+	if (sk) {
+sherry_cache:
+		sock_hold(sk);
+	}
+	read_unlock(&hashinfo->lhash_lock);
+	return sk;
+}
+
+/* Socket demux engine toys. */
+#ifdef __BIG_ENDIAN
+#define INET_COMBINED_PORTS(__sport, __dport) \
+	(((__u32)(__sport) << 16) | (__u32)(__dport))
+#else /* __LITTLE_ENDIAN */
+#define INET_COMBINED_PORTS(__sport, __dport) \
+	(((__u32)(__dport) << 16) | (__u32)(__sport))
+#endif
+
+#if (BITS_PER_LONG == 64)
+#ifdef __BIG_ENDIAN
+#define INET_ADDR_COOKIE(__name, __saddr, __daddr) \
+	const __u64 __name = (((__u64)(__saddr)) << 32) | ((__u64)(__daddr));
+#else /* __LITTLE_ENDIAN */
+#define INET_ADDR_COOKIE(__name, __saddr, __daddr) \
+	const __u64 __name = (((__u64)(__daddr)) << 32) | ((__u64)(__saddr));
+#endif /* __BIG_ENDIAN */
+#define INET_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\
+	(((*((__u64 *)&(inet_sk(__sk)->daddr))) == (__cookie))	&&	\
+	 ((*((__u32 *)&(inet_sk(__sk)->dport))) == (__ports))	&&	\
+	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
+#define INET_TW_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\
+	(((*((__u64 *)&(inet_twsk(__sk)->tw_daddr))) == (__cookie)) &&	\
+	 ((*((__u32 *)&(inet_twsk(__sk)->tw_dport))) == (__ports)) &&	\
+	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
+#else /* 32-bit arch */
+#define INET_ADDR_COOKIE(__name, __saddr, __daddr)
+#define INET_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)	\
+	((inet_sk(__sk)->daddr		== (__saddr))		&&	\
+	 (inet_sk(__sk)->rcv_saddr	== (__daddr))		&&	\
+	 ((*((__u32 *)&(inet_sk(__sk)->dport))) == (__ports))	&&	\
+	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
+#define INET_TW_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)	\
+	((inet_twsk(__sk)->tw_daddr	== (__saddr))		&&	\
+	 (inet_twsk(__sk)->tw_rcv_saddr	== (__daddr))		&&	\
+	 ((*((__u32 *)&(inet_twsk(__sk)->tw_dport))) == (__ports)) &&	\
+	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
+#endif /* 64-bit arch */
+
+/*
+ * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so we need
+ * not check it for lookups anymore, thanks Alexey. -DaveM
+ *
+ * Local BH must be disabled here.
+ */
+static inline struct sock *
+	__inet_lookup_established(struct inet_hashinfo *hashinfo,
+				  const u32 saddr, const u16 sport,
+				  const u32 daddr, const u16 hnum,
+				  const int dif)
+{
+	INET_ADDR_COOKIE(acookie, saddr, daddr)
+	const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
+	struct sock *sk;
+	const struct hlist_node *node;
+	/* Optimize here for direct hit, only listening connections can
+	 * have wildcards anyways.
+	 */
+	const int hash = inet_ehashfn(daddr, hnum, saddr, sport, hashinfo->ehash_size);
+	struct inet_ehash_bucket *head = &hashinfo->ehash[hash];
+
+	read_lock(&head->lock);
+	sk_for_each(sk, node, &head->chain) {
+		if (INET_MATCH(sk, acookie, saddr, daddr, ports, dif))
+			goto hit; /* You sunk my battleship! */
+	}
+
+	/* Must check for a TIME_WAIT'er before going to listener hash. */
+	sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) {
+		if (INET_TW_MATCH(sk, acookie, saddr, daddr, ports, dif))
+			goto hit;
+	}
+	sk = NULL;
+out:
+	read_unlock(&head->lock);
+	return sk;
+hit:
+	sock_hold(sk);
+	goto out;
+}
+
+static inline struct sock *__inet_lookup(struct inet_hashinfo *hashinfo,
+					 const u32 saddr, const u16 sport,
+					 const u32 daddr, const u16 hnum,
+					 const int dif)
+{
+	struct sock *sk = __inet_lookup_established(hashinfo, saddr, sport, daddr,
+						    hnum, dif);
+	return sk ? : inet_lookup_listener(hashinfo, daddr, hnum, dif);
+}
+
+static inline struct sock *inet_lookup(struct inet_hashinfo *hashinfo,
+				       const u32 saddr, const u16 sport,
+				       const u32 daddr, const u16 dport,
+				       const int dif)
+{
+	struct sock *sk;
+
+	local_bh_disable();
+	sk = __inet_lookup(hashinfo, saddr, sport, daddr, ntohs(dport), dif);
+	local_bh_enable();
+
+	return sk;
+}
+#endif /* _INET_HASHTABLES_H */
diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
new file mode 100644
index 00000000000..3b070352e86
--- /dev/null
+++ b/include/net/inet_timewait_sock.h
@@ -0,0 +1,219 @@
+/*
+ * 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 a generic INET TIMEWAIT sock
+ *
+ *		From code originally in net/tcp.h
+ *
+ *		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 _INET_TIMEWAIT_SOCK_
+#define _INET_TIMEWAIT_SOCK_
+
+#include <linux/config.h>
+
+#include <linux/ip.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/types.h>
+#include <linux/workqueue.h>
+
+#include <net/sock.h>
+#include <net/tcp_states.h>
+
+#include <asm/atomic.h>
+
+struct inet_hashinfo;
+
+#define INET_TWDR_RECYCLE_SLOTS_LOG	5
+#define INET_TWDR_RECYCLE_SLOTS		(1 << INET_TWDR_RECYCLE_SLOTS_LOG)
+
+/*
+ * If time > 4sec, it is "slow" path, no recycling is required,
+ * so that we select tick to get range about 4 seconds.
+ */
+#if HZ <= 16 || HZ > 4096
+# error Unsupported: HZ <= 16 or HZ > 4096
+#elif HZ <= 32
+# define INET_TWDR_RECYCLE_TICK (5 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
+#elif HZ <= 64
+# define INET_TWDR_RECYCLE_TICK (6 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
+#elif HZ <= 128
+# define INET_TWDR_RECYCLE_TICK (7 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
+#elif HZ <= 256
+# define INET_TWDR_RECYCLE_TICK (8 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
+#elif HZ <= 512
+# define INET_TWDR_RECYCLE_TICK (9 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
+#elif HZ <= 1024
+# define INET_TWDR_RECYCLE_TICK (10 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
+#elif HZ <= 2048
+# define INET_TWDR_RECYCLE_TICK (11 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
+#else
+# define INET_TWDR_RECYCLE_TICK (12 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
+#endif
+
+/* TIME_WAIT reaping mechanism. */
+#define INET_TWDR_TWKILL_SLOTS	8 /* Please keep this a power of 2. */
+
+#define INET_TWDR_TWKILL_QUOTA 100
+
+struct inet_timewait_death_row {
+	/* Short-time timewait calendar */
+	int			twcal_hand;
+	int			twcal_jiffie;
+	struct timer_list	twcal_timer;
+	struct hlist_head	twcal_row[INET_TWDR_RECYCLE_SLOTS];
+
+	spinlock_t		death_lock;
+	int			tw_count;
+	int			period;
+	u32			thread_slots;
+	struct work_struct	twkill_work;
+	struct timer_list	tw_timer;
+	int			slot;
+	struct hlist_head	cells[INET_TWDR_TWKILL_SLOTS];
+	struct inet_hashinfo 	*hashinfo;
+	int			sysctl_tw_recycle;
+	int			sysctl_max_tw_buckets;
+};
+
+extern void inet_twdr_hangman(unsigned long data);
+extern void inet_twdr_twkill_work(void *data);
+extern void inet_twdr_twcal_tick(unsigned long data);
+
+#if (BITS_PER_LONG == 64)
+#define INET_TIMEWAIT_ADDRCMP_ALIGN_BYTES 8
+#else
+#define INET_TIMEWAIT_ADDRCMP_ALIGN_BYTES 4
+#endif
+
+struct inet_bind_bucket;
+
+/*
+ * This is a TIME_WAIT sock. It works around the memory consumption
+ * problems of sockets in such a state on heavily loaded servers, but
+ * without violating the protocol specification.
+ */
+struct inet_timewait_sock {
+	/*
+	 * Now struct sock also uses sock_common, so please just
+	 * don't add nothing before this first member (__tw_common) --acme
+	 */
+	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_bound_dev_if		__tw_common.skc_bound_dev_if
+#define tw_node			__tw_common.skc_node
+#define tw_bind_node		__tw_common.skc_bind_node
+#define tw_refcnt		__tw_common.skc_refcnt
+#define tw_prot			__tw_common.skc_prot
+	volatile unsigned char	tw_substate;
+	/* 3 bits hole, try to pack */
+	unsigned char		tw_rcv_wscale;
+	/* Socket demultiplex comparisons on incoming packets. */
+	/* these five are in inet_sock */
+	__u16			tw_sport;
+	__u32			tw_daddr __attribute__((aligned(INET_TIMEWAIT_ADDRCMP_ALIGN_BYTES)));
+	__u32			tw_rcv_saddr;
+	__u16			tw_dport;
+	__u16			tw_num;
+	/* And these are ours. */
+	__u8			tw_ipv6only:1;
+	/* 31 bits hole, try to pack */
+	int			tw_hashent;
+	int			tw_timeout;
+	unsigned long		tw_ttd;
+	struct inet_bind_bucket	*tw_tb;
+	struct hlist_node	tw_death_node;
+};
+
+static inline void inet_twsk_add_node(struct inet_timewait_sock *tw,
+				      struct hlist_head *list)
+{
+	hlist_add_head(&tw->tw_node, list);
+}
+
+static inline void inet_twsk_add_bind_node(struct inet_timewait_sock *tw,
+					   struct hlist_head *list)
+{
+	hlist_add_head(&tw->tw_bind_node, list);
+}
+
+static inline int inet_twsk_dead_hashed(const struct inet_timewait_sock *tw)
+{
+	return tw->tw_death_node.pprev != NULL;
+}
+
+static inline void inet_twsk_dead_node_init(struct inet_timewait_sock *tw)
+{
+	tw->tw_death_node.pprev = NULL;
+}
+
+static inline void __inet_twsk_del_dead_node(struct inet_timewait_sock *tw)
+{
+	__hlist_del(&tw->tw_death_node);
+	inet_twsk_dead_node_init(tw);
+}
+
+static inline int inet_twsk_del_dead_node(struct inet_timewait_sock *tw)
+{
+	if (inet_twsk_dead_hashed(tw)) {
+		__inet_twsk_del_dead_node(tw);
+		return 1;
+	}
+	return 0;
+}
+
+#define inet_twsk_for_each(tw, node, head) \
+	hlist_for_each_entry(tw, node, head, tw_node)
+
+#define inet_twsk_for_each_inmate(tw, node, jail) \
+	hlist_for_each_entry(tw, node, jail, tw_death_node)
+
+#define inet_twsk_for_each_inmate_safe(tw, node, safe, jail) \
+	hlist_for_each_entry_safe(tw, node, safe, jail, tw_death_node)
+
+static inline struct inet_timewait_sock *inet_twsk(const struct sock *sk)
+{
+	return (struct inet_timewait_sock *)sk;
+}
+
+static inline u32 inet_rcv_saddr(const struct sock *sk)
+{
+	return likely(sk->sk_state != TCP_TIME_WAIT) ?
+		inet_sk(sk)->rcv_saddr : inet_twsk(sk)->tw_rcv_saddr;
+}
+
+static inline void inet_twsk_put(struct inet_timewait_sock *tw)
+{
+	if (atomic_dec_and_test(&tw->tw_refcnt)) {
+#ifdef SOCK_REFCNT_DEBUG
+		printk(KERN_DEBUG "%s timewait_sock %p released\n",
+		       tw->tw_prot->name, tw);
+#endif
+		kmem_cache_free(tw->tw_prot->twsk_slab, tw);
+	}
+}
+
+extern struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk,
+						  const int state);
+
+extern void __inet_twsk_kill(struct inet_timewait_sock *tw,
+			     struct inet_hashinfo *hashinfo);
+
+extern void __inet_twsk_hashdance(struct inet_timewait_sock *tw,
+				  struct sock *sk,
+				  struct inet_hashinfo *hashinfo);
+
+extern void inet_twsk_schedule(struct inet_timewait_sock *tw,
+			       struct inet_timewait_death_row *twdr,
+			       const int timeo, const int timewait_len);
+extern void inet_twsk_deschedule(struct inet_timewait_sock *tw,
+				 struct inet_timewait_death_row *twdr);
+#endif	/* _INET_TIMEWAIT_SOCK_ */
diff --git a/include/net/ip.h b/include/net/ip.h
index 32360bbe143..e4563bbee6e 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -86,7 +86,7 @@ extern int		ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
 					      u32 saddr, u32 daddr,
 					      struct ip_options *opt);
 extern int		ip_rcv(struct sk_buff *skb, struct net_device *dev,
-			       struct packet_type *pt);
+			       struct packet_type *pt, struct net_device *orig_dev);
 extern int		ip_local_deliver(struct sk_buff *skb);
 extern int		ip_mr_input(struct sk_buff *skb);
 extern int		ip_output(struct sk_buff *skb);
@@ -140,8 +140,6 @@ struct ip_reply_arg {
 void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *arg,
 		   unsigned int len); 
 
-extern int ip_finish_output(struct sk_buff *skb);
-
 struct ipv4_config
 {
 	int	log_martians;
@@ -165,6 +163,24 @@ extern int sysctl_local_port_range[2];
 extern int sysctl_ip_default_ttl;
 extern int sysctl_ip_nonlocal_bind;
 
+/* From ip_fragment.c */
+extern int sysctl_ipfrag_high_thresh; 
+extern int sysctl_ipfrag_low_thresh;
+extern int sysctl_ipfrag_time;
+extern int sysctl_ipfrag_secret_interval;
+
+/* From inetpeer.c */
+extern int inet_peer_threshold;
+extern int inet_peer_minttl;
+extern int inet_peer_maxttl;
+extern int inet_peer_gc_mintime;
+extern int inet_peer_gc_maxtime;
+
+/* From ip_output.c */
+extern int sysctl_ip_dynaddr;
+
+extern void ipfrag_init(void);
+
 #ifdef CONFIG_INET
 /* The function in 2.2 was invalid, producing wrong result for
  * check=0xFEFF. It was noticed by Arthur Skawina _year_ ago. --ANK(000625) */
@@ -319,7 +335,10 @@ extern void ip_options_build(struct sk_buff *skb, struct ip_options *opt, u32 da
 extern int ip_options_echo(struct ip_options *dopt, struct sk_buff *skb);
 extern void ip_options_fragment(struct sk_buff *skb);
 extern int ip_options_compile(struct ip_options *opt, struct sk_buff *skb);
-extern int ip_options_get(struct ip_options **optp, unsigned char *data, int optlen, int user);
+extern int ip_options_get(struct ip_options **optp,
+			  unsigned char *data, int optlen);
+extern int ip_options_get_from_user(struct ip_options **optp,
+				    unsigned char __user *data, int optlen);
 extern void ip_options_undo(struct ip_options * opt);
 extern void ip_forward_options(struct sk_buff *skb);
 extern int ip_options_rcv_srr(struct sk_buff *skb);
@@ -350,5 +369,10 @@ int ipv4_doint_and_flush_strategy(ctl_table *table, int __user *name, int nlen,
 				  void __user *oldval, size_t __user *oldlenp,
 				  void __user *newval, size_t newlen, 
 				  void **context);
+#ifdef CONFIG_PROC_FS
+extern int ip_misc_proc_init(void);
+#endif
+
+extern struct ctl_table ipv4_table[];
 
 #endif	/* _IP_H */
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index f920706d526..1f2e428ca36 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -12,7 +12,6 @@
 #include <net/flow.h>
 #include <net/ip6_fib.h>
 #include <net/sock.h>
-#include <linux/tcp.h>
 #include <linux/ip.h>
 #include <linux/ipv6.h>
 
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index a4208a336ac..14de4ebd121 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -295,4 +295,9 @@ static inline void fib_res_put(struct fib_result *res)
 #endif
 }
 
+#ifdef CONFIG_PROC_FS
+extern int  fib_proc_init(void);
+extern void fib_proc_exit(void);
+#endif
+
 #endif  /* _NET_FIB_H */
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 52da5d26617..7a3c43711a1 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -255,7 +255,6 @@ struct ip_vs_daemon_user {
 #include <asm/atomic.h>                 /* for struct atomic_t */
 #include <linux/netdevice.h>		/* for struct neighbour */
 #include <net/dst.h>			/* for struct dst_entry */
-#include <net/tcp.h>
 #include <net/udp.h>
 #include <linux/compiler.h>
 
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 69324465e8b..3203eaff4bd 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -104,6 +104,7 @@ struct frag_hdr {
 
 #ifdef __KERNEL__
 
+#include <linux/config.h>
 #include <net/sock.h>
 
 /* sysctls */
@@ -145,7 +146,6 @@ DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6);
 #define UDP6_INC_STATS(field)		SNMP_INC_STATS(udp_stats_in6, field)
 #define UDP6_INC_STATS_BH(field)	SNMP_INC_STATS_BH(udp_stats_in6, field)
 #define UDP6_INC_STATS_USER(field) 	SNMP_INC_STATS_USER(udp_stats_in6, field)
-extern atomic_t			inet6_sock_nr;
 
 int snmp6_register_dev(struct inet6_dev *idev);
 int snmp6_unregister_dev(struct inet6_dev *idev);
@@ -346,7 +346,8 @@ static inline int ipv6_addr_any(const struct in6_addr *a)
 
 extern int			ipv6_rcv(struct sk_buff *skb, 
 					 struct net_device *dev, 
-					 struct packet_type *pt);
+					 struct packet_type *pt,
+					 struct net_device *orig_dev);
 
 /*
  *	upper-layer output functions
@@ -464,8 +465,38 @@ extern int sysctl_ip6frag_low_thresh;
 extern int sysctl_ip6frag_time;
 extern int sysctl_ip6frag_secret_interval;
 
-#endif /* __KERNEL__ */
-#endif /* _NET_IPV6_H */
+extern struct proto_ops inet6_stream_ops;
+extern struct proto_ops inet6_dgram_ops;
+
+extern int ip6_mc_source(int add, int omode, struct sock *sk,
+			 struct group_source_req *pgsr);
+extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
+extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
+			 struct group_filter __user *optval,
+			 int __user *optlen);
+
+#ifdef CONFIG_PROC_FS
+extern int  ac6_proc_init(void);
+extern void ac6_proc_exit(void);
+extern int  raw6_proc_init(void);
+extern void raw6_proc_exit(void);
+extern int  tcp6_proc_init(void);
+extern void tcp6_proc_exit(void);
+extern int  udp6_proc_init(void);
+extern void udp6_proc_exit(void);
+extern int  ipv6_misc_proc_init(void);
+extern void ipv6_misc_proc_exit(void);
+
+extern struct rt6_statistics rt6_stats;
+#endif
 
+#ifdef CONFIG_SYSCTL
+extern ctl_table ipv6_route_table[];
+extern ctl_table ipv6_icmp_table[];
 
+extern void ipv6_sysctl_register(void);
+extern void ipv6_sysctl_unregister(void);
+#endif
 
+#endif /* __KERNEL__ */
+#endif /* _NET_IPV6_H */
diff --git a/include/net/llc.h b/include/net/llc.h
index c9aed2a8b4e..71769a5aeef 100644
--- a/include/net/llc.h
+++ b/include/net/llc.h
@@ -46,7 +46,8 @@ struct llc_sap {
 	unsigned char	 f_bit;
 	int		 (*rcv_func)(struct sk_buff *skb,
 				     struct net_device *dev,
-				     struct packet_type *pt);
+				     struct packet_type *pt,
+				     struct net_device *orig_dev);
 	struct llc_addr	 laddr;
 	struct list_head node;
 	struct {
@@ -64,7 +65,7 @@ extern rwlock_t llc_sap_list_lock;
 extern unsigned char llc_station_mac_sa[ETH_ALEN];
 
 extern int llc_rcv(struct sk_buff *skb, struct net_device *dev,
-		   struct packet_type *pt);
+		   struct packet_type *pt, struct net_device *orig_dev);
 
 extern int llc_mac_hdr_init(struct sk_buff *skb,
 			    unsigned char *sa, unsigned char *da);
@@ -78,7 +79,8 @@ extern void llc_set_station_handler(void (*handler)(struct sk_buff *skb));
 extern struct llc_sap *llc_sap_open(unsigned char lsap,
 				    int (*rcv)(struct sk_buff *skb,
 					       struct net_device *dev,
-					       struct packet_type *pt));
+					       struct packet_type *pt,
+					       struct net_device *orig_dev));
 extern void llc_sap_close(struct llc_sap *sap);
 
 extern struct llc_sap *llc_sap_find(unsigned char sap_value);
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 89809891e5a..34c07731933 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -363,7 +363,14 @@ __neigh_lookup_errno(struct neigh_table *tbl, const void *pkey,
 	return neigh_create(tbl, pkey, dev);
 }
 
-#define LOCALLY_ENQUEUED -2
+struct neighbour_cb {
+	unsigned long sched_next;
+	unsigned int flags;
+};
+
+#define LOCALLY_ENQUEUED 0x1
+
+#define NEIGH_CB(skb)	((struct neighbour_cb *)(skb)->cb)
 
 #endif
 #endif
diff --git a/include/net/p8022.h b/include/net/p8022.h
index 3c99a86c358..42e9fac51b3 100644
--- a/include/net/p8022.h
+++ b/include/net/p8022.h
@@ -4,7 +4,10 @@ extern struct datalink_proto *
 	register_8022_client(unsigned char type,
 			     int (*func)(struct sk_buff *skb,
 					 struct net_device *dev,
-					 struct packet_type *pt));
+					 struct packet_type *pt,
+					 struct net_device *orig_dev));
 extern void unregister_8022_client(struct datalink_proto *proto);
 
+extern struct datalink_proto *make_8023_client(void);
+extern void destroy_8023_client(struct datalink_proto *dl);
 #endif
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 4abda6aec05..b902d24a325 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -352,10 +352,10 @@ tcf_change_indev(struct tcf_proto *tp, char *indev, struct rtattr *indev_tlv)
 static inline int
 tcf_match_indev(struct sk_buff *skb, char *indev)
 {
-	if (0 != indev[0]) {
-		if  (NULL == skb->input_dev)
+	if (indev[0]) {
+		if  (!skb->input_dev)
 			return 0;
-		else if (0 != strcmp(indev, skb->input_dev->name))
+		if (strcmp(indev, skb->input_dev->name))
 			return 0;
 	}
 
diff --git a/include/net/psnap.h b/include/net/psnap.h
index 9c94e8f98b3..b2e01cc3fc8 100644
--- a/include/net/psnap.h
+++ b/include/net/psnap.h
@@ -1,7 +1,7 @@
 #ifndef _NET_PSNAP_H
 #define _NET_PSNAP_H
 
-extern struct datalink_proto *register_snap_client(unsigned char *desc, int (*rcvfunc)(struct sk_buff *, struct net_device *, struct packet_type *));
+extern struct datalink_proto *register_snap_client(unsigned char *desc, int (*rcvfunc)(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *orig_dev));
 extern void unregister_snap_client(struct datalink_proto *proto);
 
 #endif
diff --git a/include/net/raw.h b/include/net/raw.h
index 1c411c45587..f47917469b1 100644
--- a/include/net/raw.h
+++ b/include/net/raw.h
@@ -17,10 +17,10 @@
 #ifndef _RAW_H
 #define _RAW_H
 
+#include <linux/config.h>
 
 extern struct proto raw_prot;
 
-
 extern void 	raw_err(struct sock *, struct sk_buff *, u32 info);
 extern int 	raw_rcv(struct sock *, struct sk_buff *);
 
@@ -37,6 +37,11 @@ extern struct sock *__raw_v4_lookup(struct sock *sk, unsigned short num,
 				    unsigned long raddr, unsigned long laddr,
 				    int dif);
 
-extern void raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash);
+extern int raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash);
+
+#ifdef CONFIG_PROC_FS
+extern int  raw_proc_init(void);
+extern void raw_proc_exit(void);
+#endif
 
 #endif	/* _RAW_H */
diff --git a/include/net/rawv6.h b/include/net/rawv6.h
index 23fd9a6a221..14476a71725 100644
--- a/include/net/rawv6.h
+++ b/include/net/rawv6.h
@@ -7,10 +7,11 @@
 extern struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE];
 extern rwlock_t raw_v6_lock;
 
-extern void ipv6_raw_deliver(struct sk_buff *skb, int nexthdr);
+extern int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr);
 
 extern struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
-				    struct in6_addr *loc_addr, struct in6_addr *rmt_addr);
+				    struct in6_addr *loc_addr, struct in6_addr *rmt_addr,
+				    int dif);
 
 extern int			rawv6_rcv(struct sock *sk,
 					  struct sk_buff *skb);
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index 72fd6f5e86b..b52cc52ffe3 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -89,6 +89,7 @@ struct listen_sock {
 	int			qlen_young;
 	int			clock_hand;
 	u32			hash_rnd;
+	u32			nr_table_entries;
 	struct request_sock	*syn_table[0];
 };
 
@@ -96,6 +97,7 @@ struct listen_sock {
  *
  * @rskq_accept_head - FIFO head of established children
  * @rskq_accept_tail - FIFO tail of established children
+ * @rskq_defer_accept - User waits for some data after accept()
  * @syn_wait_lock - serializer
  *
  * %syn_wait_lock is necessary only to avoid proc interface having to grab the main
@@ -111,6 +113,8 @@ struct request_sock_queue {
 	struct request_sock	*rskq_accept_head;
 	struct request_sock	*rskq_accept_tail;
 	rwlock_t		syn_wait_lock;
+	u8			rskq_defer_accept;
+	/* 3 bytes hole, try to pack */
 	struct listen_sock	*listen_opt;
 };
 
@@ -129,11 +133,13 @@ static inline struct listen_sock *reqsk_queue_yank_listen_sk(struct request_sock
 	return lopt;
 }
 
-static inline void reqsk_queue_destroy(struct request_sock_queue *queue)
+static inline void __reqsk_queue_destroy(struct request_sock_queue *queue)
 {
 	kfree(reqsk_queue_yank_listen_sk(queue));
 }
 
+extern void reqsk_queue_destroy(struct request_sock_queue *queue);
+
 static inline struct request_sock *
 	reqsk_queue_yank_acceptq(struct request_sock_queue *queue)
 {
@@ -221,17 +227,17 @@ static inline int reqsk_queue_added(struct request_sock_queue *queue)
 	return prev_qlen;
 }
 
-static inline int reqsk_queue_len(struct request_sock_queue *queue)
+static inline int reqsk_queue_len(const struct request_sock_queue *queue)
 {
 	return queue->listen_opt != NULL ? queue->listen_opt->qlen : 0;
 }
 
-static inline int reqsk_queue_len_young(struct request_sock_queue *queue)
+static inline int reqsk_queue_len_young(const struct request_sock_queue *queue)
 {
 	return queue->listen_opt->qlen_young;
 }
 
-static inline int reqsk_queue_is_full(struct request_sock_queue *queue)
+static inline int reqsk_queue_is_full(const struct request_sock_queue *queue)
 {
 	return queue->listen_opt->qlen >> queue->listen_opt->max_qlen_log;
 }
diff --git a/include/net/route.h b/include/net/route.h
index c3cd069a9ac..dbe79ca67d3 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -105,10 +105,6 @@ struct rt_cache_stat
         unsigned int out_hlist_search;
 };
 
-extern struct rt_cache_stat *rt_cache_stat;
-#define RT_CACHE_STAT_INC(field)					  \
-		(per_cpu_ptr(rt_cache_stat, raw_smp_processor_id())->field++)
-
 extern struct ip_rt_acct *ip_rt_acct;
 
 struct in_device;
@@ -199,4 +195,6 @@ static inline struct inet_peer *rt_get_peer(struct rtable *rt)
 	return rt->peer;
 }
 
+extern ctl_table ipv4_route_table[];
+
 #endif	/* _ROUTE_H */
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index 5999e5684bb..c51541ee024 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -47,10 +47,10 @@
 #ifndef __sctp_constants_h__
 #define __sctp_constants_h__
 
-#include <linux/tcp.h>  /* For TCP states used in sctp_sock_state_t */
 #include <linux/sctp.h>
 #include <linux/ipv6.h> /* For ipv6hdr. */
 #include <net/sctp/user.h>
+#include <net/tcp_states.h>  /* For TCP states used in sctp_sock_state_t */
 
 /* Value used for stream negotiation. */
 enum { SCTP_MAX_STREAM = 0xffff };
diff --git a/include/net/sock.h b/include/net/sock.h
index e9b1dbab90d..312cb25cbd1 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -88,6 +88,7 @@ do {	spin_lock_init(&((__sk)->sk_lock.slock)); \
 } while(0)
 
 struct sock;
+struct proto;
 
 /**
  *	struct sock_common - minimal network layer representation of sockets
@@ -98,10 +99,11 @@ struct sock;
  *	@skc_node: main hash linkage for various protocol lookup tables
  *	@skc_bind_node: bind hash linkage for various protocol lookup tables
  *	@skc_refcnt: reference count
+ *	@skc_prot: protocol handlers inside a network family
  *
  *	This is the minimal network layer representation of sockets, the header
- *	for struct sock and struct tcp_tw_bucket.
-  */
+ *	for struct sock and struct inet_timewait_sock.
+ */
 struct sock_common {
 	unsigned short		skc_family;
 	volatile unsigned char	skc_state;
@@ -110,11 +112,12 @@ struct sock_common {
 	struct hlist_node	skc_node;
 	struct hlist_node	skc_bind_node;
 	atomic_t		skc_refcnt;
+	struct proto		*skc_prot;
 };
 
 /**
   *	struct sock - network layer representation of sockets
-  *	@__sk_common: shared layout with tcp_tw_bucket
+  *	@__sk_common: shared layout with inet_timewait_sock
   *	@sk_shutdown: mask of %SEND_SHUTDOWN and/or %RCV_SHUTDOWN
   *	@sk_userlocks: %SO_SNDBUF and %SO_RCVBUF settings
   *	@sk_lock:	synchronizer
@@ -136,11 +139,10 @@ struct sock_common {
   *	@sk_no_check: %SO_NO_CHECK setting, wether or not checkup packets
   *	@sk_route_caps: route capabilities (e.g. %NETIF_F_TSO)
   *	@sk_lingertime: %SO_LINGER l_linger setting
-  *	@sk_hashent: hash entry in several tables (e.g. tcp_ehash)
+  *	@sk_hashent: hash entry in several tables (e.g. inet_hashinfo.ehash)
   *	@sk_backlog: always used with the per-socket spinlock held
   *	@sk_callback_lock: used with the callbacks in the end of this struct
   *	@sk_error_queue: rarely used
-  *	@sk_prot: protocol handlers inside a network family
   *	@sk_prot_creator: sk_prot of original sock creator (see ipv6_setsockopt, IPV6_ADDRFORM for instance)
   *	@sk_err: last error
   *	@sk_err_soft: errors that don't cause failure but are the cause of a persistent failure not just 'timed out'
@@ -173,7 +175,7 @@ struct sock_common {
  */
 struct sock {
 	/*
-	 * Now struct tcp_tw_bucket also uses sock_common, so please just
+	 * Now struct inet_timewait_sock also uses sock_common, so please just
 	 * don't add nothing before this first member (__sk_common) --acme
 	 */
 	struct sock_common	__sk_common;
@@ -184,6 +186,7 @@ struct sock {
 #define sk_node			__sk_common.skc_node
 #define sk_bind_node		__sk_common.skc_bind_node
 #define sk_refcnt		__sk_common.skc_refcnt
+#define sk_prot			__sk_common.skc_prot
 	unsigned char		sk_shutdown : 2,
 				sk_no_check : 2,
 				sk_userlocks : 4;
@@ -218,7 +221,6 @@ struct sock {
 		struct sk_buff *tail;
 	} sk_backlog;
 	struct sk_buff_head	sk_error_queue;
-	struct proto		*sk_prot;
 	struct proto		*sk_prot_creator;
 	rwlock_t		sk_callback_lock;
 	int			sk_err,
@@ -253,28 +255,28 @@ struct sock {
 /*
  * Hashed lists helper routines
  */
-static inline struct sock *__sk_head(struct hlist_head *head)
+static inline struct sock *__sk_head(const struct hlist_head *head)
 {
 	return hlist_entry(head->first, struct sock, sk_node);
 }
 
-static inline struct sock *sk_head(struct hlist_head *head)
+static inline struct sock *sk_head(const struct hlist_head *head)
 {
 	return hlist_empty(head) ? NULL : __sk_head(head);
 }
 
-static inline struct sock *sk_next(struct sock *sk)
+static inline struct sock *sk_next(const struct sock *sk)
 {
 	return sk->sk_node.next ?
 		hlist_entry(sk->sk_node.next, struct sock, sk_node) : NULL;
 }
 
-static inline int sk_unhashed(struct sock *sk)
+static inline int sk_unhashed(const struct sock *sk)
 {
 	return hlist_unhashed(&sk->sk_node);
 }
 
-static inline int sk_hashed(struct sock *sk)
+static inline int sk_hashed(const struct sock *sk)
 {
 	return sk->sk_node.pprev != NULL;
 }
@@ -554,6 +556,10 @@ struct proto {
 	kmem_cache_t		*slab;
 	unsigned int		obj_size;
 
+	kmem_cache_t		*twsk_slab;
+	unsigned int		twsk_obj_size;
+	atomic_t		*orphan_count;
+
 	struct request_sock_ops	*rsk_prot;
 
 	struct module		*owner;
@@ -561,7 +567,9 @@ struct proto {
 	char			name[32];
 
 	struct list_head	node;
-
+#ifdef SOCK_REFCNT_DEBUG
+	atomic_t		socks;
+#endif
 	struct {
 		int inuse;
 		u8  __pad[SMP_CACHE_BYTES - sizeof(int)];
@@ -571,6 +579,31 @@ struct proto {
 extern int proto_register(struct proto *prot, int alloc_slab);
 extern void proto_unregister(struct proto *prot);
 
+#ifdef SOCK_REFCNT_DEBUG
+static inline void sk_refcnt_debug_inc(struct sock *sk)
+{
+	atomic_inc(&sk->sk_prot->socks);
+}
+
+static inline void sk_refcnt_debug_dec(struct sock *sk)
+{
+	atomic_dec(&sk->sk_prot->socks);
+	printk(KERN_DEBUG "%s socket %p released, %d are still alive\n",
+	       sk->sk_prot->name, sk, atomic_read(&sk->sk_prot->socks));
+}
+
+static inline void sk_refcnt_debug_release(const struct sock *sk)
+{
+	if (atomic_read(&sk->sk_refcnt) != 1)
+		printk(KERN_DEBUG "Destruction of the %s socket %p delayed, refcnt=%d\n",
+		       sk->sk_prot->name, sk, atomic_read(&sk->sk_refcnt));
+}
+#else /* SOCK_REFCNT_DEBUG */
+#define sk_refcnt_debug_inc(sk) do { } while (0)
+#define sk_refcnt_debug_dec(sk) do { } while (0)
+#define sk_refcnt_debug_release(sk) do { } while (0)
+#endif /* SOCK_REFCNT_DEBUG */
+
 /* Called with local bh disabled */
 static __inline__ void sock_prot_inc_use(struct proto *prot)
 {
@@ -582,6 +615,15 @@ static __inline__ void sock_prot_dec_use(struct proto *prot)
 	prot->stats[smp_processor_id()].inuse--;
 }
 
+/* With per-bucket locks this operation is not-atomic, so that
+ * this version is not worse.
+ */
+static inline void __sk_prot_rehash(struct sock *sk)
+{
+	sk->sk_prot->unhash(sk);
+	sk->sk_prot->hash(sk);
+}
+
 /* About 10 seconds */
 #define SOCK_DESTROY_TIME (10*HZ)
 
@@ -693,6 +735,8 @@ extern struct sock		*sk_alloc(int family,
 					  unsigned int __nocast priority,
 					  struct proto *prot, int zero_it);
 extern void			sk_free(struct sock *sk);
+extern struct sock		*sk_clone(const struct sock *sk,
+					  const unsigned int __nocast priority);
 
 extern struct sk_buff		*sock_wmalloc(struct sock *sk,
 					      unsigned long size, int force,
@@ -986,6 +1030,16 @@ sk_dst_check(struct sock *sk, u32 cookie)
 	return dst;
 }
 
+static inline void sk_setup_caps(struct sock *sk, struct dst_entry *dst)
+{
+	__sk_dst_set(sk, dst);
+	sk->sk_route_caps = dst->dev->features;
+	if (sk->sk_route_caps & NETIF_F_TSO) {
+		if (sock_flag(sk, SOCK_NO_LARGESEND) || dst->header_len)
+			sk->sk_route_caps &= ~NETIF_F_TSO;
+	}
+}
+
 static inline void sk_charge_skb(struct sock *sk, struct sk_buff *skb)
 {
 	sk->sk_wmem_queued   += skb->truesize;
@@ -1146,7 +1200,7 @@ static inline struct sk_buff *sk_stream_alloc_pskb(struct sock *sk,
 	int hdr_len;
 
 	hdr_len = SKB_DATA_ALIGN(sk->sk_prot->max_header);
-	skb = alloc_skb(size + hdr_len, gfp);
+	skb = alloc_skb_fclone(size + hdr_len, gfp);
 	if (skb) {
 		skb->truesize += mem;
 		if (sk->sk_forward_alloc >= (int)skb->truesize ||
@@ -1228,16 +1282,19 @@ static inline int sock_intr_errno(long timeo)
 static __inline__ void
 sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
 {
-	struct timeval *stamp = &skb->stamp;
+	struct timeval stamp;
+
+	skb_get_timestamp(skb, &stamp);
 	if (sock_flag(sk, SOCK_RCVTSTAMP)) {
 		/* Race occurred between timestamp enabling and packet
 		   receiving.  Fill in the current time for now. */
-		if (stamp->tv_sec == 0)
-			do_gettimeofday(stamp);
+		if (stamp.tv_sec == 0)
+			do_gettimeofday(&stamp);
+		skb_set_timestamp(skb, &stamp);
 		put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP, sizeof(struct timeval),
-			 stamp);
+			 &stamp);
 	} else
-		sk->sk_stamp = *stamp;
+		sk->sk_stamp = stamp;
 }
 
 /**
@@ -1262,11 +1319,11 @@ extern int sock_get_timestamp(struct sock *, struct timeval __user *);
  */
 
 #if 0
-#define NETDEBUG(x)	do { } while (0)
-#define LIMIT_NETDEBUG(x) do {} while(0)
+#define NETDEBUG(fmt, args...)	do { } while (0)
+#define LIMIT_NETDEBUG(fmt, args...) do { } while(0)
 #else
-#define NETDEBUG(x)	do { x; } while (0)
-#define LIMIT_NETDEBUG(x) do { if (net_ratelimit()) { x; } } while(0)
+#define NETDEBUG(fmt, args...)	printk(fmt,##args)
+#define LIMIT_NETDEBUG(fmt, args...) do { if (net_ratelimit()) printk(fmt,##args); } while(0)
 #endif
 
 /*
@@ -1313,4 +1370,14 @@ static inline int siocdevprivate_ioctl(unsigned int fd, unsigned int cmd, unsign
 }
 #endif
 
+extern void sk_init(void);
+
+#ifdef CONFIG_SYSCTL
+extern struct ctl_table core_table[];
+extern int sysctl_optmem_max;
+#endif
+
+extern __u32 sysctl_wmem_default;
+extern __u32 sysctl_rmem_default;
+
 #endif	/* _SOCK_H */
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 5010f0c5a56..d6bcf1317a6 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -21,360 +21,29 @@
 #define TCP_DEBUG 1
 #define FASTRETRANS_DEBUG 1
 
-/* Cancel timers, when they are not required. */
-#undef TCP_CLEAR_TIMERS
-
 #include <linux/config.h>
 #include <linux/list.h>
 #include <linux/tcp.h>
 #include <linux/slab.h>
 #include <linux/cache.h>
 #include <linux/percpu.h>
+
+#include <net/inet_connection_sock.h>
+#include <net/inet_timewait_sock.h>
+#include <net/inet_hashtables.h>
 #include <net/checksum.h>
 #include <net/request_sock.h>
 #include <net/sock.h>
 #include <net/snmp.h>
 #include <net/ip.h>
-#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
-#include <linux/ipv6.h>
-#endif
-#include <linux/seq_file.h>
-
-/* This is for all connections with a full identity, no wildcards.
- * New scheme, half the table is for TIME_WAIT, the other half is
- * for the rest.  I'll experiment with dynamic table growth later.
- */
-struct tcp_ehash_bucket {
-	rwlock_t	  lock;
-	struct hlist_head chain;
-} __attribute__((__aligned__(8)));
-
-/* This is for listening sockets, thus all sockets which possess wildcards. */
-#define TCP_LHTABLE_SIZE	32	/* Yes, really, this is all you need. */
-
-/* There are a few simple rules, which allow for local port reuse by
- * an application.  In essence:
- *
- *	1) Sockets bound to different interfaces may share a local port.
- *	   Failing that, goto test 2.
- *	2) If all sockets have sk->sk_reuse set, and none of them are in
- *	   TCP_LISTEN state, the port may be shared.
- *	   Failing that, goto test 3.
- *	3) If all sockets are bound to a specific inet_sk(sk)->rcv_saddr local
- *	   address, and none of them are the same, the port may be
- *	   shared.
- *	   Failing this, the port cannot be shared.
- *
- * The interesting point, is test #2.  This is what an FTP server does
- * all day.  To optimize this case we use a specific flag bit defined
- * below.  As we add sockets to a bind bucket list, we perform a
- * check of: (newsk->sk_reuse && (newsk->sk_state != TCP_LISTEN))
- * As long as all sockets added to a bind bucket pass this test,
- * the flag bit will be set.
- * The resulting situation is that tcp_v[46]_verify_bind() can just check
- * for this flag bit, if it is set and the socket trying to bind has
- * sk->sk_reuse set, we don't even have to walk the owners list at all,
- * we return that it is ok to bind this socket to the requested local port.
- *
- * Sounds like a lot of work, but it is worth it.  In a more naive
- * implementation (ie. current FreeBSD etc.) the entire list of ports
- * must be walked for each data port opened by an ftp server.  Needless
- * to say, this does not scale at all.  With a couple thousand FTP
- * users logged onto your box, isn't it nice to know that new data
- * ports are created in O(1) time?  I thought so. ;-)	-DaveM
- */
-struct tcp_bind_bucket {
-	unsigned short		port;
-	signed short		fastreuse;
-	struct hlist_node	node;
-	struct hlist_head	owners;
-};
-
-#define tb_for_each(tb, node, head) hlist_for_each_entry(tb, node, head, node)
-
-struct tcp_bind_hashbucket {
-	spinlock_t		lock;
-	struct hlist_head	chain;
-};
-
-static inline struct tcp_bind_bucket *__tb_head(struct tcp_bind_hashbucket *head)
-{
-	return hlist_entry(head->chain.first, struct tcp_bind_bucket, node);
-}
-
-static inline struct tcp_bind_bucket *tb_head(struct tcp_bind_hashbucket *head)
-{
-	return hlist_empty(&head->chain) ? NULL : __tb_head(head);
-}
-
-extern struct tcp_hashinfo {
-	/* This is for sockets with full identity only.  Sockets here will
-	 * always be without wildcards and will have the following invariant:
-	 *
-	 *          TCP_ESTABLISHED <= sk->sk_state < TCP_CLOSE
-	 *
-	 * First half of the table is for sockets not in TIME_WAIT, second half
-	 * is for TIME_WAIT sockets only.
-	 */
-	struct tcp_ehash_bucket *__tcp_ehash;
-
-	/* Ok, let's try this, I give up, we do need a local binding
-	 * TCP hash as well as the others for fast bind/connect.
-	 */
-	struct tcp_bind_hashbucket *__tcp_bhash;
+#include <net/tcp_states.h>
 
-	int __tcp_bhash_size;
-	int __tcp_ehash_size;
-
-	/* All sockets in TCP_LISTEN state will be in here.  This is the only
-	 * table where wildcard'd TCP sockets can exist.  Hash function here
-	 * is just local port number.
-	 */
-	struct hlist_head __tcp_listening_hash[TCP_LHTABLE_SIZE];
-
-	/* All the above members are written once at bootup and
-	 * never written again _or_ are predominantly read-access.
-	 *
-	 * Now align to a new cache line as all the following members
-	 * are often dirty.
-	 */
-	rwlock_t __tcp_lhash_lock ____cacheline_aligned;
-	atomic_t __tcp_lhash_users;
-	wait_queue_head_t __tcp_lhash_wait;
-	spinlock_t __tcp_portalloc_lock;
-} tcp_hashinfo;
-
-#define tcp_ehash	(tcp_hashinfo.__tcp_ehash)
-#define tcp_bhash	(tcp_hashinfo.__tcp_bhash)
-#define tcp_ehash_size	(tcp_hashinfo.__tcp_ehash_size)
-#define tcp_bhash_size	(tcp_hashinfo.__tcp_bhash_size)
-#define tcp_listening_hash (tcp_hashinfo.__tcp_listening_hash)
-#define tcp_lhash_lock	(tcp_hashinfo.__tcp_lhash_lock)
-#define tcp_lhash_users	(tcp_hashinfo.__tcp_lhash_users)
-#define tcp_lhash_wait	(tcp_hashinfo.__tcp_lhash_wait)
-#define tcp_portalloc_lock (tcp_hashinfo.__tcp_portalloc_lock)
-
-extern kmem_cache_t *tcp_bucket_cachep;
-extern struct tcp_bind_bucket *tcp_bucket_create(struct tcp_bind_hashbucket *head,
-						 unsigned short snum);
-extern void tcp_bucket_destroy(struct tcp_bind_bucket *tb);
-extern void tcp_bucket_unlock(struct sock *sk);
-extern int tcp_port_rover;
-
-/* These are AF independent. */
-static __inline__ int tcp_bhashfn(__u16 lport)
-{
-	return (lport & (tcp_bhash_size - 1));
-}
-
-extern void tcp_bind_hash(struct sock *sk, struct tcp_bind_bucket *tb,
-			  unsigned short snum);
-
-#if (BITS_PER_LONG == 64)
-#define TCP_ADDRCMP_ALIGN_BYTES 8
-#else
-#define TCP_ADDRCMP_ALIGN_BYTES 4
-#endif
-
-/* This is a TIME_WAIT bucket.  It works around the memory consumption
- * problems of sockets in such a state on heavily loaded servers, but
- * without violating the protocol specification.
- */
-struct tcp_tw_bucket {
-	/*
-	 * Now struct sock also uses sock_common, so please just
-	 * don't add nothing before this first member (__tw_common) --acme
-	 */
-	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_bound_dev_if		__tw_common.skc_bound_dev_if
-#define tw_node			__tw_common.skc_node
-#define tw_bind_node		__tw_common.skc_bind_node
-#define tw_refcnt		__tw_common.skc_refcnt
-	volatile unsigned char	tw_substate;
-	unsigned char		tw_rcv_wscale;
-	__u16			tw_sport;
-	/* Socket demultiplex comparisons on incoming packets. */
-	/* these five are in inet_sock */
-	__u32			tw_daddr
-		__attribute__((aligned(TCP_ADDRCMP_ALIGN_BYTES)));
-	__u32			tw_rcv_saddr;
-	__u16			tw_dport;
-	__u16			tw_num;
-	/* And these are ours. */
-	int			tw_hashent;
-	int			tw_timeout;
-	__u32			tw_rcv_nxt;
-	__u32			tw_snd_nxt;
-	__u32			tw_rcv_wnd;
-	__u32			tw_ts_recent;
-	long			tw_ts_recent_stamp;
-	unsigned long		tw_ttd;
-	struct tcp_bind_bucket	*tw_tb;
-	struct hlist_node	tw_death_node;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-	struct in6_addr		tw_v6_daddr;
-	struct in6_addr		tw_v6_rcv_saddr;
-	int			tw_v6_ipv6only;
-#endif
-};
-
-static __inline__ void tw_add_node(struct tcp_tw_bucket *tw,
-				   struct hlist_head *list)
-{
-	hlist_add_head(&tw->tw_node, list);
-}
-
-static __inline__ void tw_add_bind_node(struct tcp_tw_bucket *tw,
-					struct hlist_head *list)
-{
-	hlist_add_head(&tw->tw_bind_node, list);
-}
-
-static inline int tw_dead_hashed(struct tcp_tw_bucket *tw)
-{
-	return tw->tw_death_node.pprev != NULL;
-}
-
-static __inline__ void tw_dead_node_init(struct tcp_tw_bucket *tw)
-{
-	tw->tw_death_node.pprev = NULL;
-}
-
-static __inline__ void __tw_del_dead_node(struct tcp_tw_bucket *tw)
-{
-	__hlist_del(&tw->tw_death_node);
-	tw_dead_node_init(tw);
-}
-
-static __inline__ int tw_del_dead_node(struct tcp_tw_bucket *tw)
-{
-	if (tw_dead_hashed(tw)) {
-		__tw_del_dead_node(tw);
-		return 1;
-	}
-	return 0;
-}
-
-#define tw_for_each(tw, node, head) \
-	hlist_for_each_entry(tw, node, head, tw_node)
-
-#define tw_for_each_inmate(tw, node, jail) \
-	hlist_for_each_entry(tw, node, jail, tw_death_node)
-
-#define tw_for_each_inmate_safe(tw, node, safe, jail) \
-	hlist_for_each_entry_safe(tw, node, safe, jail, tw_death_node)
-
-#define tcptw_sk(__sk)	((struct tcp_tw_bucket *)(__sk))
-
-static inline u32 tcp_v4_rcv_saddr(const struct sock *sk)
-{
-	return likely(sk->sk_state != TCP_TIME_WAIT) ?
-		inet_sk(sk)->rcv_saddr : tcptw_sk(sk)->tw_rcv_saddr;
-}
-
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-static inline struct in6_addr *__tcp_v6_rcv_saddr(const struct sock *sk)
-{
-	return likely(sk->sk_state != TCP_TIME_WAIT) ?
-		&inet6_sk(sk)->rcv_saddr : &tcptw_sk(sk)->tw_v6_rcv_saddr;
-}
-
-static inline struct in6_addr *tcp_v6_rcv_saddr(const struct sock *sk)
-{
-	return sk->sk_family == AF_INET6 ? __tcp_v6_rcv_saddr(sk) : NULL;
-}
-
-#define tcptw_sk_ipv6only(__sk)	(tcptw_sk(__sk)->tw_v6_ipv6only)
-
-static inline int tcp_v6_ipv6only(const struct sock *sk)
-{
-	return likely(sk->sk_state != TCP_TIME_WAIT) ?
-		ipv6_only_sock(sk) : tcptw_sk_ipv6only(sk);
-}
-#else
-# define __tcp_v6_rcv_saddr(__sk)	NULL
-# define tcp_v6_rcv_saddr(__sk)		NULL
-# define tcptw_sk_ipv6only(__sk)	0
-# define tcp_v6_ipv6only(__sk)		0
-#endif
+#include <linux/seq_file.h>
 
-extern kmem_cache_t *tcp_timewait_cachep;
-
-static inline void tcp_tw_put(struct tcp_tw_bucket *tw)
-{
-	if (atomic_dec_and_test(&tw->tw_refcnt)) {
-#ifdef INET_REFCNT_DEBUG
-		printk(KERN_DEBUG "tw_bucket %p released\n", tw);
-#endif
-		kmem_cache_free(tcp_timewait_cachep, tw);
-	}
-}
+extern struct inet_hashinfo tcp_hashinfo;
 
 extern atomic_t tcp_orphan_count;
-extern int tcp_tw_count;
 extern void tcp_time_wait(struct sock *sk, int state, int timeo);
-extern void tcp_tw_deschedule(struct tcp_tw_bucket *tw);
-
-
-/* Socket demux engine toys. */
-#ifdef __BIG_ENDIAN
-#define TCP_COMBINED_PORTS(__sport, __dport) \
-	(((__u32)(__sport)<<16) | (__u32)(__dport))
-#else /* __LITTLE_ENDIAN */
-#define TCP_COMBINED_PORTS(__sport, __dport) \
-	(((__u32)(__dport)<<16) | (__u32)(__sport))
-#endif
-
-#if (BITS_PER_LONG == 64)
-#ifdef __BIG_ENDIAN
-#define TCP_V4_ADDR_COOKIE(__name, __saddr, __daddr) \
-	__u64 __name = (((__u64)(__saddr))<<32)|((__u64)(__daddr));
-#else /* __LITTLE_ENDIAN */
-#define TCP_V4_ADDR_COOKIE(__name, __saddr, __daddr) \
-	__u64 __name = (((__u64)(__daddr))<<32)|((__u64)(__saddr));
-#endif /* __BIG_ENDIAN */
-#define TCP_IPV4_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\
-	(((*((__u64 *)&(inet_sk(__sk)->daddr)))== (__cookie))	&&	\
-	 ((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports))	&&	\
-	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
-#define TCP_IPV4_TW_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\
-	(((*((__u64 *)&(tcptw_sk(__sk)->tw_daddr))) == (__cookie)) &&	\
-	 ((*((__u32 *)&(tcptw_sk(__sk)->tw_dport))) == (__ports)) &&	\
-	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
-#else /* 32-bit arch */
-#define TCP_V4_ADDR_COOKIE(__name, __saddr, __daddr)
-#define TCP_IPV4_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\
-	((inet_sk(__sk)->daddr			== (__saddr))	&&	\
-	 (inet_sk(__sk)->rcv_saddr		== (__daddr))	&&	\
-	 ((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports))	&&	\
-	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
-#define TCP_IPV4_TW_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\
-	((tcptw_sk(__sk)->tw_daddr		== (__saddr))	&&	\
-	 (tcptw_sk(__sk)->tw_rcv_saddr		== (__daddr))	&&	\
-	 ((*((__u32 *)&(tcptw_sk(__sk)->tw_dport))) == (__ports)) &&	\
-	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
-#endif /* 64-bit arch */
-
-#define TCP_IPV6_MATCH(__sk, __saddr, __daddr, __ports, __dif)	   \
-	(((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports))   	&& \
-	 ((__sk)->sk_family		== AF_INET6)		&& \
-	 ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr))	&& \
-	 ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr))	&& \
-	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
-
-/* These can have wildcards, don't try too hard. */
-static __inline__ int tcp_lhashfn(unsigned short num)
-{
-	return num & (TCP_LHTABLE_SIZE - 1);
-}
-
-static __inline__ int tcp_sk_listen_hashfn(struct sock *sk)
-{
-	return tcp_lhashfn(inet_sk(sk)->num);
-}
 
 #define MAX_TCP_HEADER	(128 + MAX_HEADER)
 
@@ -478,33 +147,6 @@ static __inline__ int tcp_sk_listen_hashfn(struct sock *sk)
 					 * timestamps. It must be less than
 					 * minimal timewait lifetime.
 					 */
-
-#define TCP_TW_RECYCLE_SLOTS_LOG	5
-#define TCP_TW_RECYCLE_SLOTS		(1<<TCP_TW_RECYCLE_SLOTS_LOG)
-
-/* If time > 4sec, it is "slow" path, no recycling is required,
-   so that we select tick to get range about 4 seconds.
- */
-
-#if HZ <= 16 || HZ > 4096
-# error Unsupported: HZ <= 16 or HZ > 4096
-#elif HZ <= 32
-# define TCP_TW_RECYCLE_TICK (5+2-TCP_TW_RECYCLE_SLOTS_LOG)
-#elif HZ <= 64
-# define TCP_TW_RECYCLE_TICK (6+2-TCP_TW_RECYCLE_SLOTS_LOG)
-#elif HZ <= 128
-# define TCP_TW_RECYCLE_TICK (7+2-TCP_TW_RECYCLE_SLOTS_LOG)
-#elif HZ <= 256
-# define TCP_TW_RECYCLE_TICK (8+2-TCP_TW_RECYCLE_SLOTS_LOG)
-#elif HZ <= 512
-# define TCP_TW_RECYCLE_TICK (9+2-TCP_TW_RECYCLE_SLOTS_LOG)
-#elif HZ <= 1024
-# define TCP_TW_RECYCLE_TICK (10+2-TCP_TW_RECYCLE_SLOTS_LOG)
-#elif HZ <= 2048
-# define TCP_TW_RECYCLE_TICK (11+2-TCP_TW_RECYCLE_SLOTS_LOG)
-#else
-# define TCP_TW_RECYCLE_TICK (12+2-TCP_TW_RECYCLE_SLOTS_LOG)
-#endif
 /*
  *	TCP option
  */
@@ -534,22 +176,18 @@ static __inline__ int tcp_sk_listen_hashfn(struct sock *sk)
 #define TCPOLEN_SACK_BASE_ALIGNED	4
 #define TCPOLEN_SACK_PERBLOCK		8
 
-#define TCP_TIME_RETRANS	1	/* Retransmit timer */
-#define TCP_TIME_DACK		2	/* Delayed ack timer */
-#define TCP_TIME_PROBE0		3	/* Zero window probe timer */
-#define TCP_TIME_KEEPOPEN	4	/* Keepalive timer */
-
 /* Flags in tp->nonagle */
 #define TCP_NAGLE_OFF		1	/* Nagle's algo is disabled */
 #define TCP_NAGLE_CORK		2	/* Socket is corked	    */
 #define TCP_NAGLE_PUSH		4	/* Cork is overriden for already queued data */
 
+extern struct inet_timewait_death_row tcp_death_row;
+
 /* sysctl variables for tcp */
 extern int sysctl_tcp_timestamps;
 extern int sysctl_tcp_window_scaling;
 extern int sysctl_tcp_sack;
 extern int sysctl_tcp_fin_timeout;
-extern int sysctl_tcp_tw_recycle;
 extern int sysctl_tcp_keepalive_time;
 extern int sysctl_tcp_keepalive_probes;
 extern int sysctl_tcp_keepalive_intvl;
@@ -564,7 +202,6 @@ extern int sysctl_tcp_stdurg;
 extern int sysctl_tcp_rfc1337;
 extern int sysctl_tcp_abort_on_overflow;
 extern int sysctl_tcp_max_orphans;
-extern int sysctl_tcp_max_tw_buckets;
 extern int sysctl_tcp_fack;
 extern int sysctl_tcp_reordering;
 extern int sysctl_tcp_ecn;
@@ -585,12 +222,6 @@ extern atomic_t tcp_memory_allocated;
 extern atomic_t tcp_sockets_allocated;
 extern int tcp_memory_pressure;
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-#define TCP_INET_FAMILY(fam) ((fam) == AF_INET)
-#else
-#define TCP_INET_FAMILY(fam) 1
-#endif
-
 /*
  *	Pointers to address related TCP functions
  *	(i.e. things that depend on the address family)
@@ -671,9 +302,6 @@ DECLARE_SNMP_STAT(struct tcp_mib, tcp_statistics);
 #define TCP_ADD_STATS_BH(field, val)	SNMP_ADD_STATS_BH(tcp_statistics, field, val)
 #define TCP_ADD_STATS_USER(field, val)	SNMP_ADD_STATS_USER(tcp_statistics, field, val)
 
-extern void			tcp_put_port(struct sock *sk);
-extern void			tcp_inherit_port(struct sock *sk, struct sock *child);
-
 extern void			tcp_v4_err(struct sk_buff *skb, u32);
 
 extern void			tcp_shutdown (struct sock *sk, int how);
@@ -682,7 +310,7 @@ extern int			tcp_v4_rcv(struct sk_buff *skb);
 
 extern int			tcp_v4_remember_stamp(struct sock *sk);
 
-extern int		    	tcp_v4_tw_remember_stamp(struct tcp_tw_bucket *tw);
+extern int		    	tcp_v4_tw_remember_stamp(struct inet_timewait_sock *tw);
 
 extern int			tcp_sendmsg(struct kiocb *iocb, struct sock *sk,
 					    struct msghdr *msg, size_t size);
@@ -704,42 +332,22 @@ extern int			tcp_rcv_established(struct sock *sk,
 
 extern void			tcp_rcv_space_adjust(struct sock *sk);
 
-enum tcp_ack_state_t
-{
-	TCP_ACK_SCHED = 1,
-	TCP_ACK_TIMER = 2,
-	TCP_ACK_PUSHED= 4
-};
-
-static inline void tcp_schedule_ack(struct tcp_sock *tp)
+static inline void tcp_dec_quickack_mode(struct sock *sk,
+					 const unsigned int pkts)
 {
-	tp->ack.pending |= TCP_ACK_SCHED;
-}
-
-static inline int tcp_ack_scheduled(struct tcp_sock *tp)
-{
-	return tp->ack.pending&TCP_ACK_SCHED;
-}
-
-static __inline__ void tcp_dec_quickack_mode(struct tcp_sock *tp, unsigned int pkts)
-{
-	if (tp->ack.quick) {
-		if (pkts >= tp->ack.quick) {
-			tp->ack.quick = 0;
+	struct inet_connection_sock *icsk = inet_csk(sk);
 
+	if (icsk->icsk_ack.quick) {
+		if (pkts >= icsk->icsk_ack.quick) {
+			icsk->icsk_ack.quick = 0;
 			/* Leaving quickack mode we deflate ATO. */
-			tp->ack.ato = TCP_ATO_MIN;
+			icsk->icsk_ack.ato   = TCP_ATO_MIN;
 		} else
-			tp->ack.quick -= pkts;
+			icsk->icsk_ack.quick -= pkts;
 	}
 }
 
-extern void tcp_enter_quickack_mode(struct tcp_sock *tp);
-
-static __inline__ void tcp_delack_init(struct tcp_sock *tp)
-{
-	memset(&tp->ack, 0, sizeof(tp->ack));
-}
+extern void tcp_enter_quickack_mode(struct sock *sk);
 
 static inline void tcp_clear_options(struct tcp_options_received *rx_opt)
 {
@@ -755,10 +363,9 @@ enum tcp_tw_status
 };
 
 
-extern enum tcp_tw_status	tcp_timewait_state_process(struct tcp_tw_bucket *tw,
+extern enum tcp_tw_status	tcp_timewait_state_process(struct inet_timewait_sock *tw,
 							   struct sk_buff *skb,
-							   struct tcphdr *th,
-							   unsigned len);
+							   const struct tcphdr *th);
 
 extern struct sock *		tcp_check_req(struct sock *sk,struct sk_buff *skb,
 					      struct request_sock *req,
@@ -773,7 +380,6 @@ extern void			tcp_update_metrics(struct sock *sk);
 
 extern void			tcp_close(struct sock *sk, 
 					  long timeout);
-extern struct sock *		tcp_accept(struct sock *sk, int flags, int *err);
 extern unsigned int		tcp_poll(struct file * file, struct socket *sock, struct poll_table_struct *wait);
 
 extern int			tcp_getsockopt(struct sock *sk, int level, 
@@ -789,8 +395,6 @@ extern int			tcp_recvmsg(struct kiocb *iocb, struct sock *sk,
 					    size_t len, int nonblock, 
 					    int flags, int *addr_len);
 
-extern int			tcp_listen_start(struct sock *sk);
-
 extern void			tcp_parse_options(struct sk_buff *skb,
 						  struct tcp_options_received *opt_rx,
 						  int estab);
@@ -799,11 +403,6 @@ extern void			tcp_parse_options(struct sk_buff *skb,
  *	TCP v4 functions exported for the inet6 API
  */
 
-extern int		       	tcp_v4_rebuild_header(struct sock *sk);
-
-extern int		       	tcp_v4_build_header(struct sock *sk, 
-						    struct sk_buff *skb);
-
 extern void		       	tcp_v4_send_check(struct sock *sk, 
 						  struct tcphdr *th, int len, 
 						  struct sk_buff *skb);
@@ -872,18 +471,15 @@ extern void tcp_cwnd_application_limited(struct sock *sk);
 
 /* tcp_timer.c */
 extern void tcp_init_xmit_timers(struct sock *);
-extern void tcp_clear_xmit_timers(struct sock *);
+static inline void tcp_clear_xmit_timers(struct sock *sk)
+{
+	inet_csk_clear_xmit_timers(sk);
+}
 
-extern void tcp_delete_keepalive_timer(struct sock *);
-extern void tcp_reset_keepalive_timer(struct sock *, unsigned long);
 extern unsigned int tcp_sync_mss(struct sock *sk, u32 pmtu);
 extern unsigned int tcp_current_mss(struct sock *sk, int large);
 
-#ifdef TCP_DEBUG
-extern const char tcp_timer_bug_msg[];
-#endif
-
-/* tcp_diag.c */
+/* tcp.c */
 extern void tcp_get_info(struct sock *, struct tcp_info *);
 
 /* Read 'sendfile()'-style from a TCP socket */
@@ -892,72 +488,6 @@ typedef int (*sk_read_actor_t)(read_descriptor_t *, struct sk_buff *,
 extern int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
 			 sk_read_actor_t recv_actor);
 
-static inline void tcp_clear_xmit_timer(struct sock *sk, int what)
-{
-	struct tcp_sock *tp = tcp_sk(sk);
-	
-	switch (what) {
-	case TCP_TIME_RETRANS:
-	case TCP_TIME_PROBE0:
-		tp->pending = 0;
-
-#ifdef TCP_CLEAR_TIMERS
-		sk_stop_timer(sk, &tp->retransmit_timer);
-#endif
-		break;
-	case TCP_TIME_DACK:
-		tp->ack.blocked = 0;
-		tp->ack.pending = 0;
-
-#ifdef TCP_CLEAR_TIMERS
-		sk_stop_timer(sk, &tp->delack_timer);
-#endif
-		break;
-	default:
-#ifdef TCP_DEBUG
-		printk(tcp_timer_bug_msg);
-#endif
-		return;
-	};
-
-}
-
-/*
- *	Reset the retransmission timer
- */
-static inline void tcp_reset_xmit_timer(struct sock *sk, int what, unsigned long when)
-{
-	struct tcp_sock *tp = tcp_sk(sk);
-
-	if (when > TCP_RTO_MAX) {
-#ifdef TCP_DEBUG
-		printk(KERN_DEBUG "reset_xmit_timer sk=%p %d when=0x%lx, caller=%p\n", sk, what, when, current_text_addr());
-#endif
-		when = TCP_RTO_MAX;
-	}
-
-	switch (what) {
-	case TCP_TIME_RETRANS:
-	case TCP_TIME_PROBE0:
-		tp->pending = what;
-		tp->timeout = jiffies+when;
-		sk_reset_timer(sk, &tp->retransmit_timer, tp->timeout);
-		break;
-
-	case TCP_TIME_DACK:
-		tp->ack.pending |= TCP_ACK_TIMER;
-		tp->ack.timeout = jiffies+when;
-		sk_reset_timer(sk, &tp->delack_timer, tp->ack.timeout);
-		break;
-
-	default:
-#ifdef TCP_DEBUG
-		printk(tcp_timer_bug_msg);
-#endif
-		return;
-	};
-}
-
 /* Initialize RCV_MSS value.
  * RCV_MSS is an our guess about MSS used by the peer.
  * We haven't any direct information about the MSS.
@@ -975,7 +505,7 @@ static inline void tcp_initialize_rcv_mss(struct sock *sk)
 	hint = min(hint, TCP_MIN_RCVMSS);
 	hint = max(hint, TCP_MIN_MSS);
 
-	tp->ack.rcv_mss = hint;
+	inet_csk(sk)->icsk_ack.rcv_mss = hint;
 }
 
 static __inline__ void __tcp_fast_path_on(struct tcp_sock *tp, u32 snd_wnd)
@@ -1110,7 +640,8 @@ static inline void tcp_packets_out_inc(struct sock *sk,
 
 	tp->packets_out += tcp_skb_pcount(skb);
 	if (!orig)
-		tcp_reset_xmit_timer(sk, TCP_TIME_RETRANS, tp->rto);
+		inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
+					  inet_csk(sk)->icsk_rto, TCP_RTO_MAX);
 }
 
 static inline void tcp_packets_out_dec(struct tcp_sock *tp, 
@@ -1138,29 +669,29 @@ struct tcp_congestion_ops {
 	struct list_head	list;
 
 	/* initialize private data (optional) */
-	void (*init)(struct tcp_sock *tp);
+	void (*init)(struct sock *sk);
 	/* cleanup private data  (optional) */
-	void (*release)(struct tcp_sock *tp);
+	void (*release)(struct sock *sk);
 
 	/* return slow start threshold (required) */
-	u32 (*ssthresh)(struct tcp_sock *tp);
+	u32 (*ssthresh)(struct sock *sk);
 	/* lower bound for congestion window (optional) */
-	u32 (*min_cwnd)(struct tcp_sock *tp);
+	u32 (*min_cwnd)(struct sock *sk);
 	/* do new cwnd calculation (required) */
-	void (*cong_avoid)(struct tcp_sock *tp, u32 ack,
+	void (*cong_avoid)(struct sock *sk, u32 ack,
 			   u32 rtt, u32 in_flight, int good_ack);
 	/* round trip time sample per acked packet (optional) */
-	void (*rtt_sample)(struct tcp_sock *tp, u32 usrtt);
+	void (*rtt_sample)(struct sock *sk, u32 usrtt);
 	/* call before changing ca_state (optional) */
-	void (*set_state)(struct tcp_sock *tp, u8 new_state);
+	void (*set_state)(struct sock *sk, u8 new_state);
 	/* call when cwnd event occurs (optional) */
-	void (*cwnd_event)(struct tcp_sock *tp, enum tcp_ca_event ev);
+	void (*cwnd_event)(struct sock *sk, enum tcp_ca_event ev);
 	/* new value of cwnd after loss (optional) */
-	u32  (*undo_cwnd)(struct tcp_sock *tp);
+	u32  (*undo_cwnd)(struct sock *sk);
 	/* hook for packet ack accounting (optional) */
-	void (*pkts_acked)(struct tcp_sock *tp, u32 num_acked);
-	/* get info for tcp_diag (optional) */
-	void (*get_info)(struct tcp_sock *tp, u32 ext, struct sk_buff *skb);
+	void (*pkts_acked)(struct sock *sk, u32 num_acked);
+	/* get info for inet_diag (optional) */
+	void (*get_info)(struct sock *sk, u32 ext, struct sk_buff *skb);
 
 	char 		name[TCP_CA_NAME_MAX];
 	struct module 	*owner;
@@ -1169,30 +700,34 @@ struct tcp_congestion_ops {
 extern int tcp_register_congestion_control(struct tcp_congestion_ops *type);
 extern void tcp_unregister_congestion_control(struct tcp_congestion_ops *type);
 
-extern void tcp_init_congestion_control(struct tcp_sock *tp);
-extern void tcp_cleanup_congestion_control(struct tcp_sock *tp);
+extern void tcp_init_congestion_control(struct sock *sk);
+extern void tcp_cleanup_congestion_control(struct sock *sk);
 extern int tcp_set_default_congestion_control(const char *name);
 extern void tcp_get_default_congestion_control(char *name);
-extern int tcp_set_congestion_control(struct tcp_sock *tp, const char *name);
+extern int tcp_set_congestion_control(struct sock *sk, const char *name);
 
 extern struct tcp_congestion_ops tcp_init_congestion_ops;
-extern u32 tcp_reno_ssthresh(struct tcp_sock *tp);
-extern void tcp_reno_cong_avoid(struct tcp_sock *tp, u32 ack,
+extern u32 tcp_reno_ssthresh(struct sock *sk);
+extern void tcp_reno_cong_avoid(struct sock *sk, u32 ack,
 				u32 rtt, u32 in_flight, int flag);
-extern u32 tcp_reno_min_cwnd(struct tcp_sock *tp);
+extern u32 tcp_reno_min_cwnd(struct sock *sk);
 extern struct tcp_congestion_ops tcp_reno;
 
-static inline void tcp_set_ca_state(struct tcp_sock *tp, u8 ca_state)
+static inline void tcp_set_ca_state(struct sock *sk, const u8 ca_state)
 {
-	if (tp->ca_ops->set_state)
-		tp->ca_ops->set_state(tp, ca_state);
-	tp->ca_state = ca_state;
+	struct inet_connection_sock *icsk = inet_csk(sk);
+
+	if (icsk->icsk_ca_ops->set_state)
+		icsk->icsk_ca_ops->set_state(sk, ca_state);
+	icsk->icsk_ca_state = ca_state;
 }
 
-static inline void tcp_ca_event(struct tcp_sock *tp, enum tcp_ca_event event)
+static inline void tcp_ca_event(struct sock *sk, const enum tcp_ca_event event)
 {
-	if (tp->ca_ops->cwnd_event)
-		tp->ca_ops->cwnd_event(tp, event);
+	const struct inet_connection_sock *icsk = inet_csk(sk);
+
+	if (icsk->icsk_ca_ops->cwnd_event)
+		icsk->icsk_ca_ops->cwnd_event(sk, event);
 }
 
 /* This determines how many packets are "in the network" to the best
@@ -1218,9 +753,10 @@ static __inline__ unsigned int tcp_packets_in_flight(const struct tcp_sock *tp)
  * The exception is rate halving phase, when cwnd is decreasing towards
  * ssthresh.
  */
-static inline __u32 tcp_current_ssthresh(struct tcp_sock *tp)
+static inline __u32 tcp_current_ssthresh(const struct sock *sk)
 {
-	if ((1<<tp->ca_state)&(TCPF_CA_CWR|TCPF_CA_Recovery))
+	const struct tcp_sock *tp = tcp_sk(sk);
+	if ((1 << inet_csk(sk)->icsk_ca_state) & (TCPF_CA_CWR | TCPF_CA_Recovery))
 		return tp->snd_ssthresh;
 	else
 		return max(tp->snd_ssthresh,
@@ -1237,10 +773,13 @@ static inline void tcp_sync_left_out(struct tcp_sock *tp)
 }
 
 /* Set slow start threshold and cwnd not falling to slow start */
-static inline void __tcp_enter_cwr(struct tcp_sock *tp)
+static inline void __tcp_enter_cwr(struct sock *sk)
 {
+	const struct inet_connection_sock *icsk = inet_csk(sk);
+	struct tcp_sock *tp = tcp_sk(sk);
+
 	tp->undo_marker = 0;
-	tp->snd_ssthresh = tp->ca_ops->ssthresh(tp);
+	tp->snd_ssthresh = icsk->icsk_ca_ops->ssthresh(sk);
 	tp->snd_cwnd = min(tp->snd_cwnd,
 			   tcp_packets_in_flight(tp) + 1U);
 	tp->snd_cwnd_cnt = 0;
@@ -1249,12 +788,14 @@ static inline void __tcp_enter_cwr(struct tcp_sock *tp)
 	TCP_ECN_queue_cwr(tp);
 }
 
-static inline void tcp_enter_cwr(struct tcp_sock *tp)
+static inline void tcp_enter_cwr(struct sock *sk)
 {
+	struct tcp_sock *tp = tcp_sk(sk);
+
 	tp->prior_ssthresh = 0;
-	if (tp->ca_state < TCP_CA_CWR) {
-		__tcp_enter_cwr(tp);
-		tcp_set_ca_state(tp, TCP_CA_CWR);
+	if (inet_csk(sk)->icsk_ca_state < TCP_CA_CWR) {
+		__tcp_enter_cwr(sk);
+		tcp_set_ca_state(sk, TCP_CA_CWR);
 	}
 }
 
@@ -1277,8 +818,10 @@ static __inline__ void tcp_minshall_update(struct tcp_sock *tp, int mss,
 
 static __inline__ void tcp_check_probe_timer(struct sock *sk, struct tcp_sock *tp)
 {
-	if (!tp->packets_out && !tp->pending)
-		tcp_reset_xmit_timer(sk, TCP_TIME_PROBE0, tp->rto);
+	const struct inet_connection_sock *icsk = inet_csk(sk);
+	if (!tp->packets_out && !icsk->icsk_pending)
+		inet_csk_reset_xmit_timer(sk, ICSK_TIME_PROBE0,
+					  icsk->icsk_rto, TCP_RTO_MAX);
 }
 
 static __inline__ void tcp_push_pending_frames(struct sock *sk,
@@ -1297,9 +840,6 @@ static __inline__ void tcp_update_wl(struct tcp_sock *tp, u32 ack, u32 seq)
 	tp->snd_wl1 = seq;
 }
 
-extern void tcp_destroy_sock(struct sock *sk);
-
-
 /*
  * Calculate(/check) TCP checksum
  */
@@ -1359,8 +899,10 @@ static __inline__ int tcp_prequeue(struct sock *sk, struct sk_buff *skb)
 			tp->ucopy.memory = 0;
 		} else if (skb_queue_len(&tp->ucopy.prequeue) == 1) {
 			wake_up_interruptible(sk->sk_sleep);
-			if (!tcp_ack_scheduled(tp))
-				tcp_reset_xmit_timer(sk, TCP_TIME_DACK, (3*TCP_RTO_MIN)/4);
+			if (!inet_csk_ack_scheduled(sk))
+				inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK,
+						          (3 * TCP_RTO_MIN) / 4,
+							  TCP_RTO_MAX);
 		}
 		return 1;
 	}
@@ -1393,9 +935,9 @@ static __inline__ void tcp_set_state(struct sock *sk, int state)
 			TCP_INC_STATS(TCP_MIB_ESTABRESETS);
 
 		sk->sk_prot->unhash(sk);
-		if (tcp_sk(sk)->bind_hash &&
+		if (inet_csk(sk)->icsk_bind_hash &&
 		    !(sk->sk_userlocks & SOCK_BINDPORT_LOCK))
-			tcp_put_port(sk);
+			inet_put_port(&tcp_hashinfo, sk);
 		/* fall through */
 	default:
 		if (oldstate==TCP_ESTABLISHED)
@@ -1422,7 +964,7 @@ static __inline__ void tcp_done(struct sock *sk)
 	if (!sock_flag(sk, SOCK_DEAD))
 		sk->sk_state_change(sk);
 	else
-		tcp_destroy_sock(sk);
+		inet_csk_destroy_sock(sk);
 }
 
 static __inline__ void tcp_sack_reset(struct tcp_options_received *rx_opt)
@@ -1524,54 +1066,6 @@ static inline int tcp_full_space(const struct sock *sk)
 	return tcp_win_from_space(sk->sk_rcvbuf); 
 }
 
-static inline void tcp_acceptq_queue(struct sock *sk, struct request_sock *req,
-					 struct sock *child)
-{
-	reqsk_queue_add(&tcp_sk(sk)->accept_queue, req, sk, child);
-}
-
-static inline void
-tcp_synq_removed(struct sock *sk, struct request_sock *req)
-{
-	if (reqsk_queue_removed(&tcp_sk(sk)->accept_queue, req) == 0)
-		tcp_delete_keepalive_timer(sk);
-}
-
-static inline void tcp_synq_added(struct sock *sk)
-{
-	if (reqsk_queue_added(&tcp_sk(sk)->accept_queue) == 0)
-		tcp_reset_keepalive_timer(sk, TCP_TIMEOUT_INIT);
-}
-
-static inline int tcp_synq_len(struct sock *sk)
-{
-	return reqsk_queue_len(&tcp_sk(sk)->accept_queue);
-}
-
-static inline int tcp_synq_young(struct sock *sk)
-{
-	return reqsk_queue_len_young(&tcp_sk(sk)->accept_queue);
-}
-
-static inline int tcp_synq_is_full(struct sock *sk)
-{
-	return reqsk_queue_is_full(&tcp_sk(sk)->accept_queue);
-}
-
-static inline void tcp_synq_unlink(struct tcp_sock *tp, struct request_sock *req,
-				   struct request_sock **prev)
-{
-	reqsk_queue_unlink(&tp->accept_queue, req, prev);
-}
-
-static inline void tcp_synq_drop(struct sock *sk, struct request_sock *req,
-				     struct request_sock **prev)
-{
-	tcp_synq_unlink(tcp_sk(sk), req, prev);
-	tcp_synq_removed(sk, req);
-	reqsk_free(req);
-}
-
 static __inline__ void tcp_openreq_init(struct request_sock *req,
 					struct tcp_options_received *rx_opt,
 					struct sk_buff *skb)
@@ -1593,27 +1087,6 @@ static __inline__ void tcp_openreq_init(struct request_sock *req,
 
 extern void tcp_enter_memory_pressure(void);
 
-extern void tcp_listen_wlock(void);
-
-/* - We may sleep inside this lock.
- * - If sleeping is not required (or called from BH),
- *   use plain read_(un)lock(&tcp_lhash_lock).
- */
-
-static inline void tcp_listen_lock(void)
-{
-	/* read_lock synchronizes to candidates to writers */
-	read_lock(&tcp_lhash_lock);
-	atomic_inc(&tcp_lhash_users);
-	read_unlock(&tcp_lhash_lock);
-}
-
-static inline void tcp_listen_unlock(void)
-{
-	if (atomic_dec_and_test(&tcp_lhash_users))
-		wake_up(&tcp_lhash_wait);
-}
-
 static inline int keepalive_intvl_when(const struct tcp_sock *tp)
 {
 	return tp->keepalive_intvl ? : sysctl_tcp_keepalive_intvl;
@@ -1624,12 +1097,13 @@ static inline int keepalive_time_when(const struct tcp_sock *tp)
 	return tp->keepalive_time ? : sysctl_tcp_keepalive_time;
 }
 
-static inline int tcp_fin_time(const struct tcp_sock *tp)
+static inline int tcp_fin_time(const struct sock *sk)
 {
-	int fin_timeout = tp->linger2 ? : sysctl_tcp_fin_timeout;
+	int fin_timeout = tcp_sk(sk)->linger2 ? : sysctl_tcp_fin_timeout;
+	const int rto = inet_csk(sk)->icsk_rto;
 
-	if (fin_timeout < (tp->rto<<2) - (tp->rto>>1))
-		fin_timeout = (tp->rto<<2) - (tp->rto>>1);
+	if (fin_timeout < (rto << 2) - (rto >> 1))
+		fin_timeout = (rto << 2) - (rto >> 1);
 
 	return fin_timeout;
 }
@@ -1658,15 +1132,6 @@ static inline int tcp_paws_check(const struct tcp_options_received *rx_opt, int
 	return 1;
 }
 
-static inline void tcp_v4_setup_caps(struct sock *sk, struct dst_entry *dst)
-{
-	sk->sk_route_caps = dst->dev->features;
-	if (sk->sk_route_caps & NETIF_F_TSO) {
-		if (sock_flag(sk, SOCK_NO_LARGESEND) || dst->header_len)
-			sk->sk_route_caps &= ~NETIF_F_TSO;
-	}
-}
-
 #define TCP_CHECK_TIMER(sk) do { } while (0)
 
 static inline int tcp_use_frto(const struct sock *sk)
@@ -1718,4 +1183,16 @@ struct tcp_iter_state {
 extern int tcp_proc_register(struct tcp_seq_afinfo *afinfo);
 extern void tcp_proc_unregister(struct tcp_seq_afinfo *afinfo);
 
+extern struct request_sock_ops tcp_request_sock_ops;
+
+extern int tcp_v4_destroy_sock(struct sock *sk);
+
+#ifdef CONFIG_PROC_FS
+extern int  tcp4_proc_init(void);
+extern void tcp4_proc_exit(void);
+#endif
+
+extern void tcp_v4_init(struct net_proto_family *ops);
+extern void tcp_init(void);
+
 #endif	/* _TCP_H */
diff --git a/include/net/tcp_ecn.h b/include/net/tcp_ecn.h
index 64980ee8c92..c6b84397448 100644
--- a/include/net/tcp_ecn.h
+++ b/include/net/tcp_ecn.h
@@ -88,7 +88,7 @@ static inline void TCP_ECN_check_ce(struct tcp_sock *tp, struct sk_buff *skb)
 		 * it is surely retransmit. It is not in ECN RFC,
 		 * but Linux follows this rule. */
 		else if (INET_ECN_is_not_ect((TCP_SKB_CB(skb)->flags)))
-			tcp_enter_quickack_mode(tp);
+			tcp_enter_quickack_mode((struct sock *)tp);
 	}
 }
 
diff --git a/include/net/tcp_states.h b/include/net/tcp_states.h
new file mode 100644
index 00000000000..b9d4176b2d1
--- /dev/null
+++ b/include/net/tcp_states.h
@@ -0,0 +1,34 @@
+/*
+ * 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 sk_state field.
+ *
+ *		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_STATES_H
+#define _LINUX_TCP_STATES_H
+
+enum {
+	TCP_ESTABLISHED = 1,
+	TCP_SYN_SENT,
+	TCP_SYN_RECV,
+	TCP_FIN_WAIT1,
+	TCP_FIN_WAIT2,
+	TCP_TIME_WAIT,
+	TCP_CLOSE,
+	TCP_CLOSE_WAIT,
+	TCP_LAST_ACK,
+	TCP_LISTEN,
+	TCP_CLOSING,	/* Now a valid state */
+
+	TCP_MAX_STATES	/* Leave at the end! */
+};
+
+#define TCP_STATE_MASK	0xF
+
+#endif	/* _LINUX_TCP_STATES_H */
diff --git a/include/net/udp.h b/include/net/udp.h
index ac229b761db..107b9d791a1 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -94,6 +94,11 @@ struct udp_iter_state {
 	struct seq_operations	seq_ops;
 };
 
+#ifdef CONFIG_PROC_FS
 extern int udp_proc_register(struct udp_seq_afinfo *afinfo);
 extern void udp_proc_unregister(struct udp_seq_afinfo *afinfo);
+
+extern int  udp4_proc_init(void);
+extern void udp4_proc_exit(void);
+#endif
 #endif	/* _UDP_H */
diff --git a/include/net/x25.h b/include/net/x25.h
index 8b39b98876e..fee62ff8c19 100644
--- a/include/net/x25.h
+++ b/include/net/x25.h
@@ -175,7 +175,7 @@ extern void x25_kill_by_neigh(struct x25_neigh *);
 
 /* x25_dev.c */
 extern void x25_send_frame(struct sk_buff *, struct x25_neigh *);
-extern int  x25_lapb_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *);
+extern int  x25_lapb_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
 extern void x25_establish_link(struct x25_neigh *);
 extern void x25_terminate_link(struct x25_neigh *);
 
diff --git a/include/net/x25device.h b/include/net/x25device.h
index d45ae883bd1..1a318374fae 100644
--- a/include/net/x25device.h
+++ b/include/net/x25device.h
@@ -8,7 +8,6 @@
 static inline __be16 x25_type_trans(struct sk_buff *skb, struct net_device *dev)
 {
 	skb->mac.raw = skb->data;
-	skb->input_dev = skb->dev = dev;
 	skb->pkt_type = PACKET_HOST;
 	
 	return htons(ETH_P_X25);
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 868ef88ef97..a9d0d8c5dfb 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -818,7 +818,6 @@ extern void xfrm6_init(void);
 extern void xfrm6_fini(void);
 extern void xfrm_state_init(void);
 extern void xfrm4_state_init(void);
-extern void xfrm4_state_fini(void);
 extern void xfrm6_state_init(void);
 extern void xfrm6_state_fini(void);